Commit | Line | Data |
---|---|---|
252b5132 | 1 | /* tc-mips.c -- assemble code for a MIPS chip. |
071742cf | 2 | Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003 |
82efde3a | 3 | Free Software Foundation, Inc. |
252b5132 RH |
4 | Contributed by the OSF and Ralph Campbell. |
5 | Written by Keith Knowles and Ralph Campbell, working independently. | |
6 | Modified for ECOFF and R4000 support by Ian Lance Taylor of Cygnus | |
7 | Support. | |
8 | ||
9 | This file is part of GAS. | |
10 | ||
11 | GAS is free software; you can redistribute it and/or modify | |
12 | it under the terms of the GNU General Public License as published by | |
13 | the Free Software Foundation; either version 2, or (at your option) | |
14 | any later version. | |
15 | ||
16 | GAS is distributed in the hope that it will be useful, | |
17 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
18 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
19 | GNU General Public License for more details. | |
20 | ||
21 | You should have received a copy of the GNU General Public License | |
22 | along with GAS; see the file COPYING. If not, write to the Free | |
23 | Software Foundation, 59 Temple Place - Suite 330, Boston, MA | |
24 | 02111-1307, USA. */ | |
25 | ||
26 | #include "as.h" | |
27 | #include "config.h" | |
28 | #include "subsegs.h" | |
3882b010 | 29 | #include "safe-ctype.h" |
252b5132 RH |
30 | |
31 | #ifdef USE_STDARG | |
32 | #include <stdarg.h> | |
33 | #endif | |
34 | #ifdef USE_VARARGS | |
35 | #include <varargs.h> | |
36 | #endif | |
37 | ||
38 | #include "opcode/mips.h" | |
39 | #include "itbl-ops.h" | |
c5dd6aab | 40 | #include "dwarf2dbg.h" |
252b5132 RH |
41 | |
42 | #ifdef DEBUG | |
43 | #define DBG(x) printf x | |
44 | #else | |
45 | #define DBG(x) | |
46 | #endif | |
47 | ||
48 | #ifdef OBJ_MAYBE_ELF | |
49 | /* Clean up namespace so we can include obj-elf.h too. */ | |
50 | static int mips_output_flavor PARAMS ((void)); | |
51 | static int mips_output_flavor () { return OUTPUT_FLAVOR; } | |
52 | #undef OBJ_PROCESS_STAB | |
53 | #undef OUTPUT_FLAVOR | |
54 | #undef S_GET_ALIGN | |
55 | #undef S_GET_SIZE | |
56 | #undef S_SET_ALIGN | |
57 | #undef S_SET_SIZE | |
252b5132 RH |
58 | #undef obj_frob_file |
59 | #undef obj_frob_file_after_relocs | |
60 | #undef obj_frob_symbol | |
61 | #undef obj_pop_insert | |
62 | #undef obj_sec_sym_ok_for_reloc | |
63 | #undef OBJ_COPY_SYMBOL_ATTRIBUTES | |
64 | ||
65 | #include "obj-elf.h" | |
66 | /* Fix any of them that we actually care about. */ | |
67 | #undef OUTPUT_FLAVOR | |
68 | #define OUTPUT_FLAVOR mips_output_flavor() | |
69 | #endif | |
70 | ||
71 | #if defined (OBJ_ELF) | |
72 | #include "elf/mips.h" | |
73 | #endif | |
74 | ||
75 | #ifndef ECOFF_DEBUGGING | |
76 | #define NO_ECOFF_DEBUGGING | |
77 | #define ECOFF_DEBUGGING 0 | |
78 | #endif | |
79 | ||
ecb4347a DJ |
80 | int mips_flag_mdebug = -1; |
81 | ||
252b5132 RH |
82 | #include "ecoff.h" |
83 | ||
84 | #if defined (OBJ_ELF) || defined (OBJ_MAYBE_ELF) | |
85 | static char *mips_regmask_frag; | |
86 | #endif | |
87 | ||
85b51719 | 88 | #define ZERO 0 |
252b5132 RH |
89 | #define AT 1 |
90 | #define TREG 24 | |
91 | #define PIC_CALL_REG 25 | |
92 | #define KT0 26 | |
93 | #define KT1 27 | |
94 | #define GP 28 | |
95 | #define SP 29 | |
96 | #define FP 30 | |
97 | #define RA 31 | |
98 | ||
99 | #define ILLEGAL_REG (32) | |
100 | ||
101 | /* Allow override of standard little-endian ECOFF format. */ | |
102 | ||
103 | #ifndef ECOFF_LITTLE_FORMAT | |
104 | #define ECOFF_LITTLE_FORMAT "ecoff-littlemips" | |
105 | #endif | |
106 | ||
107 | extern int target_big_endian; | |
108 | ||
252b5132 RH |
109 | /* The name of the readonly data section. */ |
110 | #define RDATA_SECTION_NAME (OUTPUT_FLAVOR == bfd_target_aout_flavour \ | |
111 | ? ".data" \ | |
112 | : OUTPUT_FLAVOR == bfd_target_ecoff_flavour \ | |
113 | ? ".rdata" \ | |
056350c6 NC |
114 | : OUTPUT_FLAVOR == bfd_target_coff_flavour \ |
115 | ? ".rdata" \ | |
252b5132 RH |
116 | : OUTPUT_FLAVOR == bfd_target_elf_flavour \ |
117 | ? ".rodata" \ | |
118 | : (abort (), "")) | |
119 | ||
a325df1d TS |
120 | /* The ABI to use. */ |
121 | enum mips_abi_level | |
122 | { | |
123 | NO_ABI = 0, | |
124 | O32_ABI, | |
125 | O64_ABI, | |
126 | N32_ABI, | |
127 | N64_ABI, | |
128 | EABI_ABI | |
129 | }; | |
130 | ||
131 | /* MIPS ABI we are using for this output file. */ | |
316f5878 | 132 | static enum mips_abi_level mips_abi = NO_ABI; |
a325df1d | 133 | |
252b5132 RH |
134 | /* This is the set of options which may be modified by the .set |
135 | pseudo-op. We use a struct so that .set push and .set pop are more | |
136 | reliable. */ | |
137 | ||
e972090a NC |
138 | struct mips_set_options |
139 | { | |
252b5132 RH |
140 | /* MIPS ISA (Instruction Set Architecture) level. This is set to -1 |
141 | if it has not been initialized. Changed by `.set mipsN', and the | |
142 | -mipsN command line option, and the default CPU. */ | |
143 | int isa; | |
1f25f5d3 CD |
144 | /* Enabled Application Specific Extensions (ASEs). These are set to -1 |
145 | if they have not been initialized. Changed by `.set <asename>', by | |
146 | command line options, and based on the default architecture. */ | |
147 | int ase_mips3d; | |
deec1734 | 148 | int ase_mdmx; |
252b5132 RH |
149 | /* Whether we are assembling for the mips16 processor. 0 if we are |
150 | not, 1 if we are, and -1 if the value has not been initialized. | |
151 | Changed by `.set mips16' and `.set nomips16', and the -mips16 and | |
152 | -nomips16 command line options, and the default CPU. */ | |
153 | int mips16; | |
154 | /* Non-zero if we should not reorder instructions. Changed by `.set | |
155 | reorder' and `.set noreorder'. */ | |
156 | int noreorder; | |
157 | /* Non-zero if we should not permit the $at ($1) register to be used | |
158 | in instructions. Changed by `.set at' and `.set noat'. */ | |
159 | int noat; | |
160 | /* Non-zero if we should warn when a macro instruction expands into | |
161 | more than one machine instruction. Changed by `.set nomacro' and | |
162 | `.set macro'. */ | |
163 | int warn_about_macros; | |
164 | /* Non-zero if we should not move instructions. Changed by `.set | |
165 | move', `.set volatile', `.set nomove', and `.set novolatile'. */ | |
166 | int nomove; | |
167 | /* Non-zero if we should not optimize branches by moving the target | |
168 | of the branch into the delay slot. Actually, we don't perform | |
169 | this optimization anyhow. Changed by `.set bopt' and `.set | |
170 | nobopt'. */ | |
171 | int nobopt; | |
172 | /* Non-zero if we should not autoextend mips16 instructions. | |
173 | Changed by `.set autoextend' and `.set noautoextend'. */ | |
174 | int noautoextend; | |
a325df1d TS |
175 | /* Restrict general purpose registers and floating point registers |
176 | to 32 bit. This is initially determined when -mgp32 or -mfp32 | |
177 | is passed but can changed if the assembler code uses .set mipsN. */ | |
178 | int gp32; | |
179 | int fp32; | |
252b5132 RH |
180 | }; |
181 | ||
a325df1d | 182 | /* True if -mgp32 was passed. */ |
a8e8e863 | 183 | static int file_mips_gp32 = -1; |
a325df1d TS |
184 | |
185 | /* True if -mfp32 was passed. */ | |
a8e8e863 | 186 | static int file_mips_fp32 = -1; |
a325df1d | 187 | |
252b5132 | 188 | /* This is the struct we use to hold the current set of options. Note |
a4672219 | 189 | that we must set the isa field to ISA_UNKNOWN and the ASE fields to |
e7af610e | 190 | -1 to indicate that they have not been initialized. */ |
252b5132 | 191 | |
e972090a NC |
192 | static struct mips_set_options mips_opts = |
193 | { | |
316f5878 | 194 | ISA_UNKNOWN, -1, -1, -1, 0, 0, 0, 0, 0, 0, 0, 0 |
e7af610e | 195 | }; |
252b5132 RH |
196 | |
197 | /* These variables are filled in with the masks of registers used. | |
198 | The object format code reads them and puts them in the appropriate | |
199 | place. */ | |
200 | unsigned long mips_gprmask; | |
201 | unsigned long mips_cprmask[4]; | |
202 | ||
203 | /* MIPS ISA we are using for this output file. */ | |
e7af610e | 204 | static int file_mips_isa = ISA_UNKNOWN; |
252b5132 | 205 | |
a4672219 TS |
206 | /* True if -mips16 was passed or implied by arguments passed on the |
207 | command line (e.g., by -march). */ | |
208 | static int file_ase_mips16; | |
209 | ||
1f25f5d3 CD |
210 | /* True if -mips3d was passed or implied by arguments passed on the |
211 | command line (e.g., by -march). */ | |
212 | static int file_ase_mips3d; | |
213 | ||
deec1734 CD |
214 | /* True if -mdmx was passed or implied by arguments passed on the |
215 | command line (e.g., by -march). */ | |
216 | static int file_ase_mdmx; | |
217 | ||
ec68c924 EC |
218 | /* The argument of the -march= flag. The architecture we are assembling. */ |
219 | static int mips_arch = CPU_UNKNOWN; | |
316f5878 RS |
220 | static const char *mips_arch_string; |
221 | static const struct mips_cpu_info *mips_arch_info; | |
ec68c924 EC |
222 | |
223 | /* The argument of the -mtune= flag. The architecture for which we | |
224 | are optimizing. */ | |
225 | static int mips_tune = CPU_UNKNOWN; | |
316f5878 RS |
226 | static const char *mips_tune_string; |
227 | static const struct mips_cpu_info *mips_tune_info; | |
ec68c924 | 228 | |
316f5878 | 229 | /* True when generating 32-bit code for a 64-bit processor. */ |
252b5132 RH |
230 | static int mips_32bitmode = 0; |
231 | ||
9ce8a5dd GRK |
232 | /* Some ISA's have delay slots for instructions which read or write |
233 | from a coprocessor (eg. mips1-mips3); some don't (eg mips4). | |
bdaaa2e1 | 234 | Return true if instructions marked INSN_LOAD_COPROC_DELAY, |
9ce8a5dd GRK |
235 | INSN_COPROC_MOVE_DELAY, or INSN_WRITE_COND_CODE actually have a |
236 | delay slot in this ISA. The uses of this macro assume that any | |
237 | ISA that has delay slots for one of these, has them for all. They | |
238 | also assume that ISAs which don't have delays for these insns, don't | |
bdaaa2e1 | 239 | have delays for the INSN_LOAD_MEMORY_DELAY instructions either. */ |
9ce8a5dd | 240 | #define ISA_HAS_COPROC_DELAYS(ISA) ( \ |
e7af610e NC |
241 | (ISA) == ISA_MIPS1 \ |
242 | || (ISA) == ISA_MIPS2 \ | |
243 | || (ISA) == ISA_MIPS3 \ | |
9ce8a5dd GRK |
244 | ) |
245 | ||
316f5878 RS |
246 | /* True if the given ABI requires 32-bit registers. */ |
247 | #define ABI_NEEDS_32BIT_REGS(ABI) ((ABI) == O32_ABI) | |
248 | ||
249 | /* Likewise 64-bit registers. */ | |
250 | #define ABI_NEEDS_64BIT_REGS(ABI) \ | |
251 | ((ABI) == N32_ABI \ | |
252 | || (ABI) == N64_ABI \ | |
253 | || (ABI) == O64_ABI) | |
254 | ||
bdaaa2e1 | 255 | /* Return true if ISA supports 64 bit gp register instructions. */ |
9ce8a5dd | 256 | #define ISA_HAS_64BIT_REGS(ISA) ( \ |
e7af610e NC |
257 | (ISA) == ISA_MIPS3 \ |
258 | || (ISA) == ISA_MIPS4 \ | |
84ea6cf2 | 259 | || (ISA) == ISA_MIPS5 \ |
d1cf510e | 260 | || (ISA) == ISA_MIPS64 \ |
9ce8a5dd GRK |
261 | ) |
262 | ||
af7ee8bf CD |
263 | /* Return true if ISA supports 64-bit right rotate (dror et al.) |
264 | instructions. */ | |
265 | #define ISA_HAS_DROR(ISA) ( \ | |
266 | 0 \ | |
267 | ) | |
268 | ||
269 | /* Return true if ISA supports 32-bit right rotate (ror et al.) | |
270 | instructions. */ | |
271 | #define ISA_HAS_ROR(ISA) ( \ | |
272 | (ISA) == ISA_MIPS32R2 \ | |
273 | ) | |
274 | ||
e013f690 | 275 | #define HAVE_32BIT_GPRS \ |
316f5878 | 276 | (mips_opts.gp32 || ! ISA_HAS_64BIT_REGS (mips_opts.isa)) |
ca4e0257 | 277 | |
e013f690 | 278 | #define HAVE_32BIT_FPRS \ |
316f5878 | 279 | (mips_opts.fp32 || ! ISA_HAS_64BIT_REGS (mips_opts.isa)) |
ca4e0257 RS |
280 | |
281 | #define HAVE_64BIT_GPRS (! HAVE_32BIT_GPRS) | |
282 | #define HAVE_64BIT_FPRS (! HAVE_32BIT_FPRS) | |
283 | ||
316f5878 | 284 | #define HAVE_NEWABI (mips_abi == N32_ABI || mips_abi == N64_ABI) |
e013f690 | 285 | |
316f5878 | 286 | #define HAVE_64BIT_OBJECTS (mips_abi == N64_ABI) |
e013f690 TS |
287 | |
288 | /* We can only have 64bit addresses if the object file format | |
289 | supports it. */ | |
afdbd6d0 CD |
290 | #define HAVE_32BIT_ADDRESSES \ |
291 | (HAVE_32BIT_GPRS \ | |
292 | || ((bfd_arch_bits_per_address (stdoutput) == 32 \ | |
293 | || ! HAVE_64BIT_OBJECTS) \ | |
294 | && mips_pic != EMBEDDED_PIC)) | |
e013f690 TS |
295 | |
296 | #define HAVE_64BIT_ADDRESSES (! HAVE_32BIT_ADDRESSES) | |
5a7a0b7b AO |
297 | #define HAVE_64BIT_ADDRESS_CONSTANTS (HAVE_64BIT_ADDRESSES \ |
298 | || HAVE_64BIT_GPRS) | |
ca4e0257 | 299 | |
a4672219 | 300 | /* Return true if the given CPU supports the MIPS16 ASE. */ |
3396de36 TS |
301 | #define CPU_HAS_MIPS16(cpu) \ |
302 | (strncmp (TARGET_CPU, "mips16", sizeof ("mips16") - 1) == 0 \ | |
303 | || strncmp (TARGET_CANONICAL, "mips-lsi-elf", sizeof ("mips-lsi-elf") - 1) == 0) | |
a4672219 | 304 | |
1f25f5d3 CD |
305 | /* Return true if the given CPU supports the MIPS3D ASE. */ |
306 | #define CPU_HAS_MIPS3D(cpu) ((cpu) == CPU_SB1 \ | |
307 | ) | |
308 | ||
deec1734 | 309 | /* Return true if the given CPU supports the MDMX ASE. */ |
b34976b6 | 310 | #define CPU_HAS_MDMX(cpu) (FALSE \ |
deec1734 CD |
311 | ) |
312 | ||
60b63b72 RS |
313 | /* True if CPU has a dror instruction. */ |
314 | #define CPU_HAS_DROR(CPU) ((CPU) == CPU_VR5400 || (CPU) == CPU_VR5500) | |
315 | ||
316 | /* True if CPU has a ror instruction. */ | |
317 | #define CPU_HAS_ROR(CPU) CPU_HAS_DROR (CPU) | |
318 | ||
bdaaa2e1 | 319 | /* Whether the processor uses hardware interlocks to protect |
252b5132 | 320 | reads from the HI and LO registers, and thus does not |
ec68c924 | 321 | require nops to be inserted. */ |
252b5132 | 322 | |
ec68c924 | 323 | #define hilo_interlocks (mips_arch == CPU_R4010 \ |
60b63b72 | 324 | || mips_arch == CPU_VR5500 \ |
0a758a12 | 325 | || mips_arch == CPU_SB1 \ |
252b5132 RH |
326 | ) |
327 | ||
328 | /* Whether the processor uses hardware interlocks to protect reads | |
329 | from the GPRs, and thus does not require nops to be inserted. */ | |
330 | #define gpr_interlocks \ | |
e7af610e | 331 | (mips_opts.isa != ISA_MIPS1 \ |
60b63b72 RS |
332 | || mips_arch == CPU_VR5400 \ |
333 | || mips_arch == CPU_VR5500 \ | |
ec68c924 | 334 | || mips_arch == CPU_R3900) |
252b5132 RH |
335 | |
336 | /* As with other "interlocks" this is used by hardware that has FP | |
337 | (co-processor) interlocks. */ | |
bdaaa2e1 | 338 | /* Itbl support may require additional care here. */ |
ec68c924 | 339 | #define cop_interlocks (mips_arch == CPU_R4300 \ |
60b63b72 RS |
340 | || mips_arch == CPU_VR5400 \ |
341 | || mips_arch == CPU_VR5500 \ | |
0a758a12 | 342 | || mips_arch == CPU_SB1 \ |
252b5132 RH |
343 | ) |
344 | ||
6b76fefe CM |
345 | /* Is this a mfhi or mflo instruction? */ |
346 | #define MF_HILO_INSN(PINFO) \ | |
347 | ((PINFO & INSN_READ_HI) || (PINFO & INSN_READ_LO)) | |
348 | ||
252b5132 RH |
349 | /* MIPS PIC level. */ |
350 | ||
a161fe53 | 351 | enum mips_pic_level mips_pic; |
252b5132 | 352 | |
39c0a331 L |
353 | /* Warn about all NOPS that the assembler generates. */ |
354 | static int warn_nops = 0; | |
355 | ||
c9914766 | 356 | /* 1 if we should generate 32 bit offsets from the $gp register in |
252b5132 | 357 | SVR4_PIC mode. Currently has no meaning in other modes. */ |
c9914766 | 358 | static int mips_big_got = 0; |
252b5132 RH |
359 | |
360 | /* 1 if trap instructions should used for overflow rather than break | |
361 | instructions. */ | |
c9914766 | 362 | static int mips_trap = 0; |
252b5132 | 363 | |
119d663a | 364 | /* 1 if double width floating point constants should not be constructed |
b6ff326e | 365 | by assembling two single width halves into two single width floating |
119d663a NC |
366 | point registers which just happen to alias the double width destination |
367 | register. On some architectures this aliasing can be disabled by a bit | |
d547a75e | 368 | in the status register, and the setting of this bit cannot be determined |
119d663a NC |
369 | automatically at assemble time. */ |
370 | static int mips_disable_float_construction; | |
371 | ||
252b5132 RH |
372 | /* Non-zero if any .set noreorder directives were used. */ |
373 | ||
374 | static int mips_any_noreorder; | |
375 | ||
6b76fefe CM |
376 | /* Non-zero if nops should be inserted when the register referenced in |
377 | an mfhi/mflo instruction is read in the next two instructions. */ | |
378 | static int mips_7000_hilo_fix; | |
379 | ||
252b5132 | 380 | /* The size of the small data section. */ |
156c2f8b | 381 | static unsigned int g_switch_value = 8; |
252b5132 RH |
382 | /* Whether the -G option was used. */ |
383 | static int g_switch_seen = 0; | |
384 | ||
385 | #define N_RMASK 0xc4 | |
386 | #define N_VFP 0xd4 | |
387 | ||
388 | /* If we can determine in advance that GP optimization won't be | |
389 | possible, we can skip the relaxation stuff that tries to produce | |
390 | GP-relative references. This makes delay slot optimization work | |
391 | better. | |
392 | ||
393 | This function can only provide a guess, but it seems to work for | |
fba2b7f9 GK |
394 | gcc output. It needs to guess right for gcc, otherwise gcc |
395 | will put what it thinks is a GP-relative instruction in a branch | |
396 | delay slot. | |
252b5132 RH |
397 | |
398 | I don't know if a fix is needed for the SVR4_PIC mode. I've only | |
399 | fixed it for the non-PIC mode. KR 95/04/07 */ | |
400 | static int nopic_need_relax PARAMS ((symbolS *, int)); | |
401 | ||
402 | /* handle of the OPCODE hash table */ | |
403 | static struct hash_control *op_hash = NULL; | |
404 | ||
405 | /* The opcode hash table we use for the mips16. */ | |
406 | static struct hash_control *mips16_op_hash = NULL; | |
407 | ||
408 | /* This array holds the chars that always start a comment. If the | |
409 | pre-processor is disabled, these aren't very useful */ | |
410 | const char comment_chars[] = "#"; | |
411 | ||
412 | /* This array holds the chars that only start a comment at the beginning of | |
413 | a line. If the line seems to have the form '# 123 filename' | |
414 | .line and .file directives will appear in the pre-processed output */ | |
415 | /* Note that input_file.c hand checks for '#' at the beginning of the | |
416 | first line of the input file. This is because the compiler outputs | |
bdaaa2e1 | 417 | #NO_APP at the beginning of its output. */ |
252b5132 RH |
418 | /* Also note that C style comments are always supported. */ |
419 | const char line_comment_chars[] = "#"; | |
420 | ||
bdaaa2e1 | 421 | /* This array holds machine specific line separator characters. */ |
63a0b638 | 422 | const char line_separator_chars[] = ";"; |
252b5132 RH |
423 | |
424 | /* Chars that can be used to separate mant from exp in floating point nums */ | |
425 | const char EXP_CHARS[] = "eE"; | |
426 | ||
427 | /* Chars that mean this number is a floating point constant */ | |
428 | /* As in 0f12.456 */ | |
429 | /* or 0d1.2345e12 */ | |
430 | const char FLT_CHARS[] = "rRsSfFdDxXpP"; | |
431 | ||
432 | /* Also be aware that MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT may have to be | |
433 | changed in read.c . Ideally it shouldn't have to know about it at all, | |
434 | but nothing is ideal around here. | |
435 | */ | |
436 | ||
437 | static char *insn_error; | |
438 | ||
439 | static int auto_align = 1; | |
440 | ||
441 | /* When outputting SVR4 PIC code, the assembler needs to know the | |
442 | offset in the stack frame from which to restore the $gp register. | |
443 | This is set by the .cprestore pseudo-op, and saved in this | |
444 | variable. */ | |
445 | static offsetT mips_cprestore_offset = -1; | |
446 | ||
6478892d TS |
447 | /* Similiar for NewABI PIC code, where $gp is callee-saved. NewABI has some |
448 | more optimizations, it can use a register value instead of a memory-saved | |
956cd1d6 | 449 | offset and even an other register than $gp as global pointer. */ |
6478892d TS |
450 | static offsetT mips_cpreturn_offset = -1; |
451 | static int mips_cpreturn_register = -1; | |
452 | static int mips_gp_register = GP; | |
def2e0dd | 453 | static int mips_gprel_offset = 0; |
6478892d | 454 | |
7a621144 DJ |
455 | /* Whether mips_cprestore_offset has been set in the current function |
456 | (or whether it has already been warned about, if not). */ | |
457 | static int mips_cprestore_valid = 0; | |
458 | ||
252b5132 RH |
459 | /* This is the register which holds the stack frame, as set by the |
460 | .frame pseudo-op. This is needed to implement .cprestore. */ | |
461 | static int mips_frame_reg = SP; | |
462 | ||
7a621144 DJ |
463 | /* Whether mips_frame_reg has been set in the current function |
464 | (or whether it has already been warned about, if not). */ | |
465 | static int mips_frame_reg_valid = 0; | |
466 | ||
252b5132 RH |
467 | /* To output NOP instructions correctly, we need to keep information |
468 | about the previous two instructions. */ | |
469 | ||
470 | /* Whether we are optimizing. The default value of 2 means to remove | |
471 | unneeded NOPs and swap branch instructions when possible. A value | |
472 | of 1 means to not swap branches. A value of 0 means to always | |
473 | insert NOPs. */ | |
474 | static int mips_optimize = 2; | |
475 | ||
476 | /* Debugging level. -g sets this to 2. -gN sets this to N. -g0 is | |
477 | equivalent to seeing no -g option at all. */ | |
478 | static int mips_debug = 0; | |
479 | ||
480 | /* The previous instruction. */ | |
481 | static struct mips_cl_insn prev_insn; | |
482 | ||
483 | /* The instruction before prev_insn. */ | |
484 | static struct mips_cl_insn prev_prev_insn; | |
485 | ||
486 | /* If we don't want information for prev_insn or prev_prev_insn, we | |
487 | point the insn_mo field at this dummy integer. */ | |
43841e91 | 488 | static const struct mips_opcode dummy_opcode = { NULL, NULL, 0, 0, 0, 0 }; |
252b5132 RH |
489 | |
490 | /* Non-zero if prev_insn is valid. */ | |
491 | static int prev_insn_valid; | |
492 | ||
493 | /* The frag for the previous instruction. */ | |
494 | static struct frag *prev_insn_frag; | |
495 | ||
496 | /* The offset into prev_insn_frag for the previous instruction. */ | |
497 | static long prev_insn_where; | |
498 | ||
499 | /* The reloc type for the previous instruction, if any. */ | |
f6688943 | 500 | static bfd_reloc_code_real_type prev_insn_reloc_type[3]; |
252b5132 RH |
501 | |
502 | /* The reloc for the previous instruction, if any. */ | |
f6688943 | 503 | static fixS *prev_insn_fixp[3]; |
252b5132 RH |
504 | |
505 | /* Non-zero if the previous instruction was in a delay slot. */ | |
506 | static int prev_insn_is_delay_slot; | |
507 | ||
508 | /* Non-zero if the previous instruction was in a .set noreorder. */ | |
509 | static int prev_insn_unreordered; | |
510 | ||
511 | /* Non-zero if the previous instruction uses an extend opcode (if | |
512 | mips16). */ | |
513 | static int prev_insn_extended; | |
514 | ||
515 | /* Non-zero if the previous previous instruction was in a .set | |
516 | noreorder. */ | |
517 | static int prev_prev_insn_unreordered; | |
518 | ||
519 | /* If this is set, it points to a frag holding nop instructions which | |
520 | were inserted before the start of a noreorder section. If those | |
521 | nops turn out to be unnecessary, the size of the frag can be | |
522 | decreased. */ | |
523 | static fragS *prev_nop_frag; | |
524 | ||
525 | /* The number of nop instructions we created in prev_nop_frag. */ | |
526 | static int prev_nop_frag_holds; | |
527 | ||
528 | /* The number of nop instructions that we know we need in | |
bdaaa2e1 | 529 | prev_nop_frag. */ |
252b5132 RH |
530 | static int prev_nop_frag_required; |
531 | ||
532 | /* The number of instructions we've seen since prev_nop_frag. */ | |
533 | static int prev_nop_frag_since; | |
534 | ||
535 | /* For ECOFF and ELF, relocations against symbols are done in two | |
536 | parts, with a HI relocation and a LO relocation. Each relocation | |
537 | has only 16 bits of space to store an addend. This means that in | |
538 | order for the linker to handle carries correctly, it must be able | |
539 | to locate both the HI and the LO relocation. This means that the | |
540 | relocations must appear in order in the relocation table. | |
541 | ||
542 | In order to implement this, we keep track of each unmatched HI | |
543 | relocation. We then sort them so that they immediately precede the | |
bdaaa2e1 | 544 | corresponding LO relocation. */ |
252b5132 | 545 | |
e972090a NC |
546 | struct mips_hi_fixup |
547 | { | |
252b5132 RH |
548 | /* Next HI fixup. */ |
549 | struct mips_hi_fixup *next; | |
550 | /* This fixup. */ | |
551 | fixS *fixp; | |
552 | /* The section this fixup is in. */ | |
553 | segT seg; | |
554 | }; | |
555 | ||
556 | /* The list of unmatched HI relocs. */ | |
557 | ||
558 | static struct mips_hi_fixup *mips_hi_fixup_list; | |
559 | ||
64bdfcaf RS |
560 | /* The frag containing the last explicit relocation operator. |
561 | Null if explicit relocations have not been used. */ | |
562 | ||
563 | static fragS *prev_reloc_op_frag; | |
564 | ||
252b5132 RH |
565 | /* Map normal MIPS register numbers to mips16 register numbers. */ |
566 | ||
567 | #define X ILLEGAL_REG | |
e972090a NC |
568 | static const int mips32_to_16_reg_map[] = |
569 | { | |
252b5132 RH |
570 | X, X, 2, 3, 4, 5, 6, 7, |
571 | X, X, X, X, X, X, X, X, | |
572 | 0, 1, X, X, X, X, X, X, | |
573 | X, X, X, X, X, X, X, X | |
574 | }; | |
575 | #undef X | |
576 | ||
577 | /* Map mips16 register numbers to normal MIPS register numbers. */ | |
578 | ||
e972090a NC |
579 | static const unsigned int mips16_to_32_reg_map[] = |
580 | { | |
252b5132 RH |
581 | 16, 17, 2, 3, 4, 5, 6, 7 |
582 | }; | |
60b63b72 RS |
583 | |
584 | static int mips_fix_4122_bugs; | |
4a6a3df4 AO |
585 | |
586 | /* We don't relax branches by default, since this causes us to expand | |
587 | `la .l2 - .l1' if there's a branch between .l1 and .l2, because we | |
588 | fail to compute the offset before expanding the macro to the most | |
589 | efficient expansion. */ | |
590 | ||
591 | static int mips_relax_branch; | |
252b5132 RH |
592 | \f |
593 | /* Since the MIPS does not have multiple forms of PC relative | |
594 | instructions, we do not have to do relaxing as is done on other | |
595 | platforms. However, we do have to handle GP relative addressing | |
596 | correctly, which turns out to be a similar problem. | |
597 | ||
598 | Every macro that refers to a symbol can occur in (at least) two | |
599 | forms, one with GP relative addressing and one without. For | |
600 | example, loading a global variable into a register generally uses | |
601 | a macro instruction like this: | |
602 | lw $4,i | |
603 | If i can be addressed off the GP register (this is true if it is in | |
604 | the .sbss or .sdata section, or if it is known to be smaller than | |
605 | the -G argument) this will generate the following instruction: | |
606 | lw $4,i($gp) | |
607 | This instruction will use a GPREL reloc. If i can not be addressed | |
608 | off the GP register, the following instruction sequence will be used: | |
609 | lui $at,i | |
610 | lw $4,i($at) | |
611 | In this case the first instruction will have a HI16 reloc, and the | |
612 | second reloc will have a LO16 reloc. Both relocs will be against | |
613 | the symbol i. | |
614 | ||
615 | The issue here is that we may not know whether i is GP addressable | |
616 | until after we see the instruction that uses it. Therefore, we | |
617 | want to be able to choose the final instruction sequence only at | |
618 | the end of the assembly. This is similar to the way other | |
619 | platforms choose the size of a PC relative instruction only at the | |
620 | end of assembly. | |
621 | ||
622 | When generating position independent code we do not use GP | |
623 | addressing in quite the same way, but the issue still arises as | |
624 | external symbols and local symbols must be handled differently. | |
625 | ||
626 | We handle these issues by actually generating both possible | |
627 | instruction sequences. The longer one is put in a frag_var with | |
628 | type rs_machine_dependent. We encode what to do with the frag in | |
629 | the subtype field. We encode (1) the number of existing bytes to | |
630 | replace, (2) the number of new bytes to use, (3) the offset from | |
631 | the start of the existing bytes to the first reloc we must generate | |
632 | (that is, the offset is applied from the start of the existing | |
633 | bytes after they are replaced by the new bytes, if any), (4) the | |
634 | offset from the start of the existing bytes to the second reloc, | |
635 | (5) whether a third reloc is needed (the third reloc is always four | |
636 | bytes after the second reloc), and (6) whether to warn if this | |
637 | variant is used (this is sometimes needed if .set nomacro or .set | |
638 | noat is in effect). All these numbers are reasonably small. | |
639 | ||
640 | Generating two instruction sequences must be handled carefully to | |
641 | ensure that delay slots are handled correctly. Fortunately, there | |
642 | are a limited number of cases. When the second instruction | |
643 | sequence is generated, append_insn is directed to maintain the | |
644 | existing delay slot information, so it continues to apply to any | |
645 | code after the second instruction sequence. This means that the | |
646 | second instruction sequence must not impose any requirements not | |
647 | required by the first instruction sequence. | |
648 | ||
649 | These variant frags are then handled in functions called by the | |
650 | machine independent code. md_estimate_size_before_relax returns | |
651 | the final size of the frag. md_convert_frag sets up the final form | |
652 | of the frag. tc_gen_reloc adjust the first reloc and adds a second | |
653 | one if needed. */ | |
654 | #define RELAX_ENCODE(old, new, reloc1, reloc2, reloc3, warn) \ | |
655 | ((relax_substateT) \ | |
656 | (((old) << 23) \ | |
657 | | ((new) << 16) \ | |
658 | | (((reloc1) + 64) << 9) \ | |
659 | | (((reloc2) + 64) << 2) \ | |
660 | | ((reloc3) ? (1 << 1) : 0) \ | |
661 | | ((warn) ? 1 : 0))) | |
662 | #define RELAX_OLD(i) (((i) >> 23) & 0x7f) | |
663 | #define RELAX_NEW(i) (((i) >> 16) & 0x7f) | |
9a41af64 TS |
664 | #define RELAX_RELOC1(i) ((valueT) (((i) >> 9) & 0x7f) - 64) |
665 | #define RELAX_RELOC2(i) ((valueT) (((i) >> 2) & 0x7f) - 64) | |
252b5132 RH |
666 | #define RELAX_RELOC3(i) (((i) >> 1) & 1) |
667 | #define RELAX_WARN(i) ((i) & 1) | |
668 | ||
4a6a3df4 AO |
669 | /* Branch without likely bit. If label is out of range, we turn: |
670 | ||
671 | beq reg1, reg2, label | |
672 | delay slot | |
673 | ||
674 | into | |
675 | ||
676 | bne reg1, reg2, 0f | |
677 | nop | |
678 | j label | |
679 | 0: delay slot | |
680 | ||
681 | with the following opcode replacements: | |
682 | ||
683 | beq <-> bne | |
684 | blez <-> bgtz | |
685 | bltz <-> bgez | |
686 | bc1f <-> bc1t | |
687 | ||
688 | bltzal <-> bgezal (with jal label instead of j label) | |
689 | ||
690 | Even though keeping the delay slot instruction in the delay slot of | |
691 | the branch would be more efficient, it would be very tricky to do | |
692 | correctly, because we'd have to introduce a variable frag *after* | |
693 | the delay slot instruction, and expand that instead. Let's do it | |
694 | the easy way for now, even if the branch-not-taken case now costs | |
695 | one additional instruction. Out-of-range branches are not supposed | |
696 | to be common, anyway. | |
697 | ||
698 | Branch likely. If label is out of range, we turn: | |
699 | ||
700 | beql reg1, reg2, label | |
701 | delay slot (annulled if branch not taken) | |
702 | ||
703 | into | |
704 | ||
705 | beql reg1, reg2, 1f | |
706 | nop | |
707 | beql $0, $0, 2f | |
708 | nop | |
709 | 1: j[al] label | |
710 | delay slot (executed only if branch taken) | |
711 | 2: | |
712 | ||
713 | It would be possible to generate a shorter sequence by losing the | |
714 | likely bit, generating something like: | |
b34976b6 | 715 | |
4a6a3df4 AO |
716 | bne reg1, reg2, 0f |
717 | nop | |
718 | j[al] label | |
719 | delay slot (executed only if branch taken) | |
720 | 0: | |
721 | ||
722 | beql -> bne | |
723 | bnel -> beq | |
724 | blezl -> bgtz | |
725 | bgtzl -> blez | |
726 | bltzl -> bgez | |
727 | bgezl -> bltz | |
728 | bc1fl -> bc1t | |
729 | bc1tl -> bc1f | |
730 | ||
731 | bltzall -> bgezal (with jal label instead of j label) | |
732 | bgezall -> bltzal (ditto) | |
733 | ||
734 | ||
735 | but it's not clear that it would actually improve performance. */ | |
af6ae2ad | 736 | #define RELAX_BRANCH_ENCODE(uncond, likely, link, toofar) \ |
4a6a3df4 AO |
737 | ((relax_substateT) \ |
738 | (0xc0000000 \ | |
739 | | ((toofar) ? 1 : 0) \ | |
740 | | ((link) ? 2 : 0) \ | |
741 | | ((likely) ? 4 : 0) \ | |
af6ae2ad | 742 | | ((uncond) ? 8 : 0))) |
4a6a3df4 | 743 | #define RELAX_BRANCH_P(i) (((i) & 0xf0000000) == 0xc0000000) |
4a6a3df4 AO |
744 | #define RELAX_BRANCH_UNCOND(i) (((i) & 8) != 0) |
745 | #define RELAX_BRANCH_LIKELY(i) (((i) & 4) != 0) | |
746 | #define RELAX_BRANCH_LINK(i) (((i) & 2) != 0) | |
ae6063d4 | 747 | #define RELAX_BRANCH_TOOFAR(i) (((i) & 1) != 0) |
4a6a3df4 | 748 | |
252b5132 RH |
749 | /* For mips16 code, we use an entirely different form of relaxation. |
750 | mips16 supports two versions of most instructions which take | |
751 | immediate values: a small one which takes some small value, and a | |
752 | larger one which takes a 16 bit value. Since branches also follow | |
753 | this pattern, relaxing these values is required. | |
754 | ||
755 | We can assemble both mips16 and normal MIPS code in a single | |
756 | object. Therefore, we need to support this type of relaxation at | |
757 | the same time that we support the relaxation described above. We | |
758 | use the high bit of the subtype field to distinguish these cases. | |
759 | ||
760 | The information we store for this type of relaxation is the | |
761 | argument code found in the opcode file for this relocation, whether | |
762 | the user explicitly requested a small or extended form, and whether | |
763 | the relocation is in a jump or jal delay slot. That tells us the | |
764 | size of the value, and how it should be stored. We also store | |
765 | whether the fragment is considered to be extended or not. We also | |
766 | store whether this is known to be a branch to a different section, | |
767 | whether we have tried to relax this frag yet, and whether we have | |
768 | ever extended a PC relative fragment because of a shift count. */ | |
769 | #define RELAX_MIPS16_ENCODE(type, small, ext, dslot, jal_dslot) \ | |
770 | (0x80000000 \ | |
771 | | ((type) & 0xff) \ | |
772 | | ((small) ? 0x100 : 0) \ | |
773 | | ((ext) ? 0x200 : 0) \ | |
774 | | ((dslot) ? 0x400 : 0) \ | |
775 | | ((jal_dslot) ? 0x800 : 0)) | |
4a6a3df4 | 776 | #define RELAX_MIPS16_P(i) (((i) & 0xc0000000) == 0x80000000) |
252b5132 RH |
777 | #define RELAX_MIPS16_TYPE(i) ((i) & 0xff) |
778 | #define RELAX_MIPS16_USER_SMALL(i) (((i) & 0x100) != 0) | |
779 | #define RELAX_MIPS16_USER_EXT(i) (((i) & 0x200) != 0) | |
780 | #define RELAX_MIPS16_DSLOT(i) (((i) & 0x400) != 0) | |
781 | #define RELAX_MIPS16_JAL_DSLOT(i) (((i) & 0x800) != 0) | |
782 | #define RELAX_MIPS16_EXTENDED(i) (((i) & 0x1000) != 0) | |
783 | #define RELAX_MIPS16_MARK_EXTENDED(i) ((i) | 0x1000) | |
784 | #define RELAX_MIPS16_CLEAR_EXTENDED(i) ((i) &~ 0x1000) | |
785 | #define RELAX_MIPS16_LONG_BRANCH(i) (((i) & 0x2000) != 0) | |
786 | #define RELAX_MIPS16_MARK_LONG_BRANCH(i) ((i) | 0x2000) | |
787 | #define RELAX_MIPS16_CLEAR_LONG_BRANCH(i) ((i) &~ 0x2000) | |
885add95 CD |
788 | |
789 | /* Is the given value a sign-extended 32-bit value? */ | |
790 | #define IS_SEXT_32BIT_NUM(x) \ | |
791 | (((x) &~ (offsetT) 0x7fffffff) == 0 \ | |
792 | || (((x) &~ (offsetT) 0x7fffffff) == ~ (offsetT) 0x7fffffff)) | |
793 | ||
794 | /* Is the given value a sign-extended 16-bit value? */ | |
795 | #define IS_SEXT_16BIT_NUM(x) \ | |
796 | (((x) &~ (offsetT) 0x7fff) == 0 \ | |
797 | || (((x) &~ (offsetT) 0x7fff) == ~ (offsetT) 0x7fff)) | |
798 | ||
252b5132 RH |
799 | \f |
800 | /* Prototypes for static functions. */ | |
801 | ||
802 | #ifdef __STDC__ | |
803 | #define internalError() \ | |
804 | as_fatal (_("internal Error, line %d, %s"), __LINE__, __FILE__) | |
805 | #else | |
806 | #define internalError() as_fatal (_("MIPS internal Error")); | |
807 | #endif | |
808 | ||
809 | enum mips_regclass { MIPS_GR_REG, MIPS_FP_REG, MIPS16_REG }; | |
810 | ||
5919d012 RS |
811 | static inline bfd_boolean reloc_needs_lo_p |
812 | PARAMS ((bfd_reloc_code_real_type)); | |
813 | static inline bfd_boolean fixup_has_matching_lo_p | |
814 | PARAMS ((fixS *)); | |
b34976b6 AM |
815 | static int insn_uses_reg |
816 | PARAMS ((struct mips_cl_insn *ip, unsigned int reg, | |
817 | enum mips_regclass class)); | |
818 | static int reg_needs_delay | |
819 | PARAMS ((unsigned int)); | |
820 | static void mips16_mark_labels | |
821 | PARAMS ((void)); | |
822 | static void append_insn | |
823 | PARAMS ((char *place, struct mips_cl_insn * ip, expressionS * p, | |
5e0116d5 | 824 | bfd_reloc_code_real_type *r)); |
b34976b6 AM |
825 | static void mips_no_prev_insn |
826 | PARAMS ((int)); | |
827 | static void mips_emit_delays | |
828 | PARAMS ((bfd_boolean)); | |
252b5132 | 829 | #ifdef USE_STDARG |
b34976b6 AM |
830 | static void macro_build |
831 | PARAMS ((char *place, int *counter, expressionS * ep, const char *name, | |
832 | const char *fmt, ...)); | |
252b5132 RH |
833 | #else |
834 | static void macro_build (); | |
835 | #endif | |
b34976b6 AM |
836 | static void mips16_macro_build |
837 | PARAMS ((char *, int *, expressionS *, const char *, const char *, va_list)); | |
838 | static void macro_build_jalr | |
839 | PARAMS ((int, expressionS *)); | |
840 | static void macro_build_lui | |
841 | PARAMS ((char *place, int *counter, expressionS * ep, int regnum)); | |
842 | static void macro_build_ldst_constoffset | |
843 | PARAMS ((char *place, int *counter, expressionS * ep, const char *op, | |
844 | int valreg, int breg)); | |
845 | static void set_at | |
846 | PARAMS ((int *counter, int reg, int unsignedp)); | |
847 | static void check_absolute_expr | |
848 | PARAMS ((struct mips_cl_insn * ip, expressionS *)); | |
849 | static void load_register | |
850 | PARAMS ((int *, int, expressionS *, int)); | |
851 | static void load_address | |
852 | PARAMS ((int *, int, expressionS *, int *)); | |
853 | static void move_register | |
854 | PARAMS ((int *, int, int)); | |
855 | static void macro | |
856 | PARAMS ((struct mips_cl_insn * ip)); | |
857 | static void mips16_macro | |
858 | PARAMS ((struct mips_cl_insn * ip)); | |
252b5132 | 859 | #ifdef LOSING_COMPILER |
b34976b6 AM |
860 | static void macro2 |
861 | PARAMS ((struct mips_cl_insn * ip)); | |
252b5132 | 862 | #endif |
b34976b6 AM |
863 | static void mips_ip |
864 | PARAMS ((char *str, struct mips_cl_insn * ip)); | |
865 | static void mips16_ip | |
866 | PARAMS ((char *str, struct mips_cl_insn * ip)); | |
867 | static void mips16_immed | |
868 | PARAMS ((char *, unsigned int, int, offsetT, bfd_boolean, bfd_boolean, | |
869 | bfd_boolean, unsigned long *, bfd_boolean *, unsigned short *)); | |
5e0116d5 RS |
870 | static bfd_boolean parse_relocation |
871 | PARAMS ((char **, bfd_reloc_code_real_type *)); | |
872 | static size_t my_getSmallExpression | |
873 | PARAMS ((expressionS *, bfd_reloc_code_real_type *, char *)); | |
b34976b6 AM |
874 | static void my_getExpression |
875 | PARAMS ((expressionS *, char *)); | |
ae948b86 | 876 | #ifdef OBJ_ELF |
b34976b6 AM |
877 | static int support_64bit_objects |
878 | PARAMS((void)); | |
ae948b86 | 879 | #endif |
b34976b6 AM |
880 | static void mips_set_option_string |
881 | PARAMS ((const char **, const char *)); | |
882 | static symbolS *get_symbol | |
883 | PARAMS ((void)); | |
884 | static void mips_align | |
885 | PARAMS ((int to, int fill, symbolS *label)); | |
886 | static void s_align | |
887 | PARAMS ((int)); | |
888 | static void s_change_sec | |
889 | PARAMS ((int)); | |
890 | static void s_change_section | |
891 | PARAMS ((int)); | |
892 | static void s_cons | |
893 | PARAMS ((int)); | |
894 | static void s_float_cons | |
895 | PARAMS ((int)); | |
896 | static void s_mips_globl | |
897 | PARAMS ((int)); | |
898 | static void s_option | |
899 | PARAMS ((int)); | |
900 | static void s_mipsset | |
901 | PARAMS ((int)); | |
902 | static void s_abicalls | |
903 | PARAMS ((int)); | |
904 | static void s_cpload | |
905 | PARAMS ((int)); | |
906 | static void s_cpsetup | |
907 | PARAMS ((int)); | |
908 | static void s_cplocal | |
909 | PARAMS ((int)); | |
910 | static void s_cprestore | |
911 | PARAMS ((int)); | |
912 | static void s_cpreturn | |
913 | PARAMS ((int)); | |
914 | static void s_gpvalue | |
915 | PARAMS ((int)); | |
916 | static void s_gpword | |
917 | PARAMS ((int)); | |
918 | static void s_gpdword | |
919 | PARAMS ((int)); | |
920 | static void s_cpadd | |
921 | PARAMS ((int)); | |
922 | static void s_insn | |
923 | PARAMS ((int)); | |
924 | static void md_obj_begin | |
925 | PARAMS ((void)); | |
926 | static void md_obj_end | |
927 | PARAMS ((void)); | |
928 | static long get_number | |
929 | PARAMS ((void)); | |
930 | static void s_mips_ent | |
931 | PARAMS ((int)); | |
932 | static void s_mips_end | |
933 | PARAMS ((int)); | |
934 | static void s_mips_frame | |
935 | PARAMS ((int)); | |
936 | static void s_mips_mask | |
937 | PARAMS ((int)); | |
938 | static void s_mips_stab | |
939 | PARAMS ((int)); | |
940 | static void s_mips_weakext | |
941 | PARAMS ((int)); | |
942 | static void s_mips_file | |
943 | PARAMS ((int)); | |
944 | static void s_mips_loc | |
945 | PARAMS ((int)); | |
5919d012 RS |
946 | static bfd_boolean pic_need_relax |
947 | PARAMS ((symbolS *, asection *)); | |
b34976b6 AM |
948 | static int mips16_extended_frag |
949 | PARAMS ((fragS *, asection *, long)); | |
4a6a3df4 | 950 | static int relaxed_branch_length (fragS *, asection *, int); |
b34976b6 AM |
951 | static int validate_mips_insn |
952 | PARAMS ((const struct mips_opcode *)); | |
953 | static void show | |
954 | PARAMS ((FILE *, const char *, int *, int *)); | |
add55e1f | 955 | #ifdef OBJ_ELF |
b34976b6 AM |
956 | static int mips_need_elf_addend_fixup |
957 | PARAMS ((fixS *)); | |
add55e1f | 958 | #endif |
e7af610e NC |
959 | |
960 | /* Table and functions used to map between CPU/ISA names, and | |
961 | ISA levels, and CPU numbers. */ | |
962 | ||
e972090a NC |
963 | struct mips_cpu_info |
964 | { | |
e7af610e NC |
965 | const char *name; /* CPU or ISA name. */ |
966 | int is_isa; /* Is this an ISA? (If 0, a CPU.) */ | |
967 | int isa; /* ISA level. */ | |
968 | int cpu; /* CPU number (default CPU if ISA). */ | |
969 | }; | |
970 | ||
b34976b6 AM |
971 | static void mips_set_architecture |
972 | PARAMS ((const struct mips_cpu_info *)); | |
973 | static void mips_set_tune | |
974 | PARAMS ((const struct mips_cpu_info *)); | |
975 | static bfd_boolean mips_strict_matching_cpu_name_p | |
976 | PARAMS ((const char *, const char *)); | |
977 | static bfd_boolean mips_matching_cpu_name_p | |
978 | PARAMS ((const char *, const char *)); | |
979 | static const struct mips_cpu_info *mips_parse_cpu | |
980 | PARAMS ((const char *, const char *)); | |
981 | static const struct mips_cpu_info *mips_cpu_info_from_isa | |
982 | PARAMS ((int)); | |
252b5132 RH |
983 | \f |
984 | /* Pseudo-op table. | |
985 | ||
986 | The following pseudo-ops from the Kane and Heinrich MIPS book | |
987 | should be defined here, but are currently unsupported: .alias, | |
988 | .galive, .gjaldef, .gjrlive, .livereg, .noalias. | |
989 | ||
990 | The following pseudo-ops from the Kane and Heinrich MIPS book are | |
991 | specific to the type of debugging information being generated, and | |
992 | should be defined by the object format: .aent, .begin, .bend, | |
993 | .bgnb, .end, .endb, .ent, .fmask, .frame, .loc, .mask, .verstamp, | |
994 | .vreg. | |
995 | ||
996 | The following pseudo-ops from the Kane and Heinrich MIPS book are | |
997 | not MIPS CPU specific, but are also not specific to the object file | |
998 | format. This file is probably the best place to define them, but | |
999 | they are not currently supported: .asm0, .endr, .lab, .repeat, | |
1000 | .struct. */ | |
1001 | ||
e972090a NC |
1002 | static const pseudo_typeS mips_pseudo_table[] = |
1003 | { | |
beae10d5 | 1004 | /* MIPS specific pseudo-ops. */ |
252b5132 RH |
1005 | {"option", s_option, 0}, |
1006 | {"set", s_mipsset, 0}, | |
1007 | {"rdata", s_change_sec, 'r'}, | |
1008 | {"sdata", s_change_sec, 's'}, | |
1009 | {"livereg", s_ignore, 0}, | |
1010 | {"abicalls", s_abicalls, 0}, | |
1011 | {"cpload", s_cpload, 0}, | |
6478892d TS |
1012 | {"cpsetup", s_cpsetup, 0}, |
1013 | {"cplocal", s_cplocal, 0}, | |
252b5132 | 1014 | {"cprestore", s_cprestore, 0}, |
6478892d TS |
1015 | {"cpreturn", s_cpreturn, 0}, |
1016 | {"gpvalue", s_gpvalue, 0}, | |
252b5132 | 1017 | {"gpword", s_gpword, 0}, |
10181a0d | 1018 | {"gpdword", s_gpdword, 0}, |
252b5132 RH |
1019 | {"cpadd", s_cpadd, 0}, |
1020 | {"insn", s_insn, 0}, | |
1021 | ||
beae10d5 | 1022 | /* Relatively generic pseudo-ops that happen to be used on MIPS |
252b5132 RH |
1023 | chips. */ |
1024 | {"asciiz", stringer, 1}, | |
1025 | {"bss", s_change_sec, 'b'}, | |
1026 | {"err", s_err, 0}, | |
1027 | {"half", s_cons, 1}, | |
1028 | {"dword", s_cons, 3}, | |
1029 | {"weakext", s_mips_weakext, 0}, | |
1030 | ||
beae10d5 | 1031 | /* These pseudo-ops are defined in read.c, but must be overridden |
252b5132 RH |
1032 | here for one reason or another. */ |
1033 | {"align", s_align, 0}, | |
1034 | {"byte", s_cons, 0}, | |
1035 | {"data", s_change_sec, 'd'}, | |
1036 | {"double", s_float_cons, 'd'}, | |
1037 | {"float", s_float_cons, 'f'}, | |
1038 | {"globl", s_mips_globl, 0}, | |
1039 | {"global", s_mips_globl, 0}, | |
1040 | {"hword", s_cons, 1}, | |
1041 | {"int", s_cons, 2}, | |
1042 | {"long", s_cons, 2}, | |
1043 | {"octa", s_cons, 4}, | |
1044 | {"quad", s_cons, 3}, | |
cca86cc8 | 1045 | {"section", s_change_section, 0}, |
252b5132 RH |
1046 | {"short", s_cons, 1}, |
1047 | {"single", s_float_cons, 'f'}, | |
1048 | {"stabn", s_mips_stab, 'n'}, | |
1049 | {"text", s_change_sec, 't'}, | |
1050 | {"word", s_cons, 2}, | |
add56521 | 1051 | |
add56521 | 1052 | { "extern", ecoff_directive_extern, 0}, |
add56521 | 1053 | |
43841e91 | 1054 | { NULL, NULL, 0 }, |
252b5132 RH |
1055 | }; |
1056 | ||
e972090a NC |
1057 | static const pseudo_typeS mips_nonecoff_pseudo_table[] = |
1058 | { | |
beae10d5 KH |
1059 | /* These pseudo-ops should be defined by the object file format. |
1060 | However, a.out doesn't support them, so we have versions here. */ | |
252b5132 RH |
1061 | {"aent", s_mips_ent, 1}, |
1062 | {"bgnb", s_ignore, 0}, | |
1063 | {"end", s_mips_end, 0}, | |
1064 | {"endb", s_ignore, 0}, | |
1065 | {"ent", s_mips_ent, 0}, | |
c5dd6aab | 1066 | {"file", s_mips_file, 0}, |
252b5132 RH |
1067 | {"fmask", s_mips_mask, 'F'}, |
1068 | {"frame", s_mips_frame, 0}, | |
c5dd6aab | 1069 | {"loc", s_mips_loc, 0}, |
252b5132 RH |
1070 | {"mask", s_mips_mask, 'R'}, |
1071 | {"verstamp", s_ignore, 0}, | |
43841e91 | 1072 | { NULL, NULL, 0 }, |
252b5132 RH |
1073 | }; |
1074 | ||
1075 | extern void pop_insert PARAMS ((const pseudo_typeS *)); | |
1076 | ||
1077 | void | |
1078 | mips_pop_insert () | |
1079 | { | |
1080 | pop_insert (mips_pseudo_table); | |
1081 | if (! ECOFF_DEBUGGING) | |
1082 | pop_insert (mips_nonecoff_pseudo_table); | |
1083 | } | |
1084 | \f | |
1085 | /* Symbols labelling the current insn. */ | |
1086 | ||
e972090a NC |
1087 | struct insn_label_list |
1088 | { | |
252b5132 RH |
1089 | struct insn_label_list *next; |
1090 | symbolS *label; | |
1091 | }; | |
1092 | ||
1093 | static struct insn_label_list *insn_labels; | |
1094 | static struct insn_label_list *free_insn_labels; | |
1095 | ||
1096 | static void mips_clear_insn_labels PARAMS ((void)); | |
1097 | ||
1098 | static inline void | |
1099 | mips_clear_insn_labels () | |
1100 | { | |
1101 | register struct insn_label_list **pl; | |
1102 | ||
1103 | for (pl = &free_insn_labels; *pl != NULL; pl = &(*pl)->next) | |
1104 | ; | |
1105 | *pl = insn_labels; | |
1106 | insn_labels = NULL; | |
1107 | } | |
1108 | \f | |
1109 | static char *expr_end; | |
1110 | ||
1111 | /* Expressions which appear in instructions. These are set by | |
1112 | mips_ip. */ | |
1113 | ||
1114 | static expressionS imm_expr; | |
1115 | static expressionS offset_expr; | |
1116 | ||
1117 | /* Relocs associated with imm_expr and offset_expr. */ | |
1118 | ||
f6688943 TS |
1119 | static bfd_reloc_code_real_type imm_reloc[3] |
1120 | = {BFD_RELOC_UNUSED, BFD_RELOC_UNUSED, BFD_RELOC_UNUSED}; | |
1121 | static bfd_reloc_code_real_type offset_reloc[3] | |
1122 | = {BFD_RELOC_UNUSED, BFD_RELOC_UNUSED, BFD_RELOC_UNUSED}; | |
252b5132 | 1123 | |
252b5132 RH |
1124 | /* These are set by mips16_ip if an explicit extension is used. */ |
1125 | ||
b34976b6 | 1126 | static bfd_boolean mips16_small, mips16_ext; |
252b5132 | 1127 | |
7ed4a06a | 1128 | #ifdef OBJ_ELF |
ecb4347a DJ |
1129 | /* The pdr segment for per procedure frame/regmask info. Not used for |
1130 | ECOFF debugging. */ | |
252b5132 RH |
1131 | |
1132 | static segT pdr_seg; | |
7ed4a06a | 1133 | #endif |
252b5132 | 1134 | |
e013f690 TS |
1135 | /* The default target format to use. */ |
1136 | ||
1137 | const char * | |
1138 | mips_target_format () | |
1139 | { | |
1140 | switch (OUTPUT_FLAVOR) | |
1141 | { | |
1142 | case bfd_target_aout_flavour: | |
1143 | return target_big_endian ? "a.out-mips-big" : "a.out-mips-little"; | |
1144 | case bfd_target_ecoff_flavour: | |
1145 | return target_big_endian ? "ecoff-bigmips" : ECOFF_LITTLE_FORMAT; | |
1146 | case bfd_target_coff_flavour: | |
1147 | return "pe-mips"; | |
1148 | case bfd_target_elf_flavour: | |
1149 | #ifdef TE_TMIPS | |
cfe86eaa | 1150 | /* This is traditional mips. */ |
e013f690 | 1151 | return (target_big_endian |
cfe86eaa TS |
1152 | ? (HAVE_64BIT_OBJECTS |
1153 | ? "elf64-tradbigmips" | |
1154 | : (HAVE_NEWABI | |
1155 | ? "elf32-ntradbigmips" : "elf32-tradbigmips")) | |
1156 | : (HAVE_64BIT_OBJECTS | |
1157 | ? "elf64-tradlittlemips" | |
1158 | : (HAVE_NEWABI | |
1159 | ? "elf32-ntradlittlemips" : "elf32-tradlittlemips"))); | |
e013f690 TS |
1160 | #else |
1161 | return (target_big_endian | |
cfe86eaa TS |
1162 | ? (HAVE_64BIT_OBJECTS |
1163 | ? "elf64-bigmips" | |
1164 | : (HAVE_NEWABI | |
1165 | ? "elf32-nbigmips" : "elf32-bigmips")) | |
1166 | : (HAVE_64BIT_OBJECTS | |
1167 | ? "elf64-littlemips" | |
1168 | : (HAVE_NEWABI | |
1169 | ? "elf32-nlittlemips" : "elf32-littlemips"))); | |
e013f690 TS |
1170 | #endif |
1171 | default: | |
1172 | abort (); | |
1173 | return NULL; | |
1174 | } | |
1175 | } | |
1176 | ||
156c2f8b NC |
1177 | /* This function is called once, at assembler startup time. It should |
1178 | set up all the tables, etc. that the MD part of the assembler will need. */ | |
1179 | ||
252b5132 RH |
1180 | void |
1181 | md_begin () | |
1182 | { | |
252b5132 | 1183 | register const char *retval = NULL; |
156c2f8b | 1184 | int i = 0; |
252b5132 | 1185 | int broken = 0; |
1f25f5d3 | 1186 | |
ec68c924 | 1187 | if (! bfd_set_arch_mach (stdoutput, bfd_arch_mips, mips_arch)) |
252b5132 RH |
1188 | as_warn (_("Could not set architecture and machine")); |
1189 | ||
252b5132 RH |
1190 | op_hash = hash_new (); |
1191 | ||
1192 | for (i = 0; i < NUMOPCODES;) | |
1193 | { | |
1194 | const char *name = mips_opcodes[i].name; | |
1195 | ||
1196 | retval = hash_insert (op_hash, name, (PTR) &mips_opcodes[i]); | |
1197 | if (retval != NULL) | |
1198 | { | |
1199 | fprintf (stderr, _("internal error: can't hash `%s': %s\n"), | |
1200 | mips_opcodes[i].name, retval); | |
1201 | /* Probably a memory allocation problem? Give up now. */ | |
1202 | as_fatal (_("Broken assembler. No assembly attempted.")); | |
1203 | } | |
1204 | do | |
1205 | { | |
1206 | if (mips_opcodes[i].pinfo != INSN_MACRO) | |
1207 | { | |
1208 | if (!validate_mips_insn (&mips_opcodes[i])) | |
1209 | broken = 1; | |
1210 | } | |
1211 | ++i; | |
1212 | } | |
1213 | while ((i < NUMOPCODES) && !strcmp (mips_opcodes[i].name, name)); | |
1214 | } | |
1215 | ||
1216 | mips16_op_hash = hash_new (); | |
1217 | ||
1218 | i = 0; | |
1219 | while (i < bfd_mips16_num_opcodes) | |
1220 | { | |
1221 | const char *name = mips16_opcodes[i].name; | |
1222 | ||
1223 | retval = hash_insert (mips16_op_hash, name, (PTR) &mips16_opcodes[i]); | |
1224 | if (retval != NULL) | |
1225 | as_fatal (_("internal: can't hash `%s': %s"), | |
1226 | mips16_opcodes[i].name, retval); | |
1227 | do | |
1228 | { | |
1229 | if (mips16_opcodes[i].pinfo != INSN_MACRO | |
1230 | && ((mips16_opcodes[i].match & mips16_opcodes[i].mask) | |
1231 | != mips16_opcodes[i].match)) | |
1232 | { | |
1233 | fprintf (stderr, _("internal error: bad mips16 opcode: %s %s\n"), | |
1234 | mips16_opcodes[i].name, mips16_opcodes[i].args); | |
1235 | broken = 1; | |
1236 | } | |
1237 | ++i; | |
1238 | } | |
1239 | while (i < bfd_mips16_num_opcodes | |
1240 | && strcmp (mips16_opcodes[i].name, name) == 0); | |
1241 | } | |
1242 | ||
1243 | if (broken) | |
1244 | as_fatal (_("Broken assembler. No assembly attempted.")); | |
1245 | ||
1246 | /* We add all the general register names to the symbol table. This | |
1247 | helps us detect invalid uses of them. */ | |
1248 | for (i = 0; i < 32; i++) | |
1249 | { | |
1250 | char buf[5]; | |
1251 | ||
1252 | sprintf (buf, "$%d", i); | |
1253 | symbol_table_insert (symbol_new (buf, reg_section, i, | |
1254 | &zero_address_frag)); | |
1255 | } | |
76db943d TS |
1256 | symbol_table_insert (symbol_new ("$ra", reg_section, RA, |
1257 | &zero_address_frag)); | |
252b5132 RH |
1258 | symbol_table_insert (symbol_new ("$fp", reg_section, FP, |
1259 | &zero_address_frag)); | |
1260 | symbol_table_insert (symbol_new ("$sp", reg_section, SP, | |
1261 | &zero_address_frag)); | |
1262 | symbol_table_insert (symbol_new ("$gp", reg_section, GP, | |
1263 | &zero_address_frag)); | |
1264 | symbol_table_insert (symbol_new ("$at", reg_section, AT, | |
1265 | &zero_address_frag)); | |
1266 | symbol_table_insert (symbol_new ("$kt0", reg_section, KT0, | |
1267 | &zero_address_frag)); | |
1268 | symbol_table_insert (symbol_new ("$kt1", reg_section, KT1, | |
1269 | &zero_address_frag)); | |
85b51719 TS |
1270 | symbol_table_insert (symbol_new ("$zero", reg_section, ZERO, |
1271 | &zero_address_frag)); | |
252b5132 RH |
1272 | symbol_table_insert (symbol_new ("$pc", reg_section, -1, |
1273 | &zero_address_frag)); | |
1274 | ||
6047c971 AO |
1275 | /* If we don't add these register names to the symbol table, they |
1276 | may end up being added as regular symbols by operand(), and then | |
1277 | make it to the object file as undefined in case they're not | |
1278 | regarded as local symbols. They're local in o32, since `$' is a | |
1279 | local symbol prefix, but not in n32 or n64. */ | |
1280 | for (i = 0; i < 8; i++) | |
1281 | { | |
1282 | char buf[6]; | |
1283 | ||
1284 | sprintf (buf, "$fcc%i", i); | |
1285 | symbol_table_insert (symbol_new (buf, reg_section, -1, | |
1286 | &zero_address_frag)); | |
1287 | } | |
1288 | ||
b34976b6 | 1289 | mips_no_prev_insn (FALSE); |
252b5132 RH |
1290 | |
1291 | mips_gprmask = 0; | |
1292 | mips_cprmask[0] = 0; | |
1293 | mips_cprmask[1] = 0; | |
1294 | mips_cprmask[2] = 0; | |
1295 | mips_cprmask[3] = 0; | |
1296 | ||
1297 | /* set the default alignment for the text section (2**2) */ | |
1298 | record_alignment (text_section, 2); | |
1299 | ||
1300 | if (USE_GLOBAL_POINTER_OPT) | |
1301 | bfd_set_gp_size (stdoutput, g_switch_value); | |
1302 | ||
1303 | if (OUTPUT_FLAVOR == bfd_target_elf_flavour) | |
1304 | { | |
1305 | /* On a native system, sections must be aligned to 16 byte | |
1306 | boundaries. When configured for an embedded ELF target, we | |
1307 | don't bother. */ | |
1308 | if (strcmp (TARGET_OS, "elf") != 0) | |
1309 | { | |
1310 | (void) bfd_set_section_alignment (stdoutput, text_section, 4); | |
1311 | (void) bfd_set_section_alignment (stdoutput, data_section, 4); | |
1312 | (void) bfd_set_section_alignment (stdoutput, bss_section, 4); | |
1313 | } | |
1314 | ||
1315 | /* Create a .reginfo section for register masks and a .mdebug | |
1316 | section for debugging information. */ | |
1317 | { | |
1318 | segT seg; | |
1319 | subsegT subseg; | |
1320 | flagword flags; | |
1321 | segT sec; | |
1322 | ||
1323 | seg = now_seg; | |
1324 | subseg = now_subseg; | |
1325 | ||
1326 | /* The ABI says this section should be loaded so that the | |
1327 | running program can access it. However, we don't load it | |
1328 | if we are configured for an embedded target */ | |
1329 | flags = SEC_READONLY | SEC_DATA; | |
1330 | if (strcmp (TARGET_OS, "elf") != 0) | |
1331 | flags |= SEC_ALLOC | SEC_LOAD; | |
1332 | ||
316f5878 | 1333 | if (mips_abi != N64_ABI) |
252b5132 RH |
1334 | { |
1335 | sec = subseg_new (".reginfo", (subsegT) 0); | |
1336 | ||
195325d2 TS |
1337 | bfd_set_section_flags (stdoutput, sec, flags); |
1338 | bfd_set_section_alignment (stdoutput, sec, HAVE_NEWABI ? 3 : 2); | |
bdaaa2e1 | 1339 | |
252b5132 RH |
1340 | #ifdef OBJ_ELF |
1341 | mips_regmask_frag = frag_more (sizeof (Elf32_External_RegInfo)); | |
1342 | #endif | |
1343 | } | |
1344 | else | |
1345 | { | |
1346 | /* The 64-bit ABI uses a .MIPS.options section rather than | |
1347 | .reginfo section. */ | |
1348 | sec = subseg_new (".MIPS.options", (subsegT) 0); | |
195325d2 TS |
1349 | bfd_set_section_flags (stdoutput, sec, flags); |
1350 | bfd_set_section_alignment (stdoutput, sec, 3); | |
252b5132 RH |
1351 | |
1352 | #ifdef OBJ_ELF | |
1353 | /* Set up the option header. */ | |
1354 | { | |
1355 | Elf_Internal_Options opthdr; | |
1356 | char *f; | |
1357 | ||
1358 | opthdr.kind = ODK_REGINFO; | |
1359 | opthdr.size = (sizeof (Elf_External_Options) | |
1360 | + sizeof (Elf64_External_RegInfo)); | |
1361 | opthdr.section = 0; | |
1362 | opthdr.info = 0; | |
1363 | f = frag_more (sizeof (Elf_External_Options)); | |
1364 | bfd_mips_elf_swap_options_out (stdoutput, &opthdr, | |
1365 | (Elf_External_Options *) f); | |
1366 | ||
1367 | mips_regmask_frag = frag_more (sizeof (Elf64_External_RegInfo)); | |
1368 | } | |
1369 | #endif | |
1370 | } | |
1371 | ||
1372 | if (ECOFF_DEBUGGING) | |
1373 | { | |
1374 | sec = subseg_new (".mdebug", (subsegT) 0); | |
1375 | (void) bfd_set_section_flags (stdoutput, sec, | |
1376 | SEC_HAS_CONTENTS | SEC_READONLY); | |
1377 | (void) bfd_set_section_alignment (stdoutput, sec, 2); | |
1378 | } | |
ecb4347a DJ |
1379 | #ifdef OBJ_ELF |
1380 | else if (OUTPUT_FLAVOR == bfd_target_elf_flavour) | |
1381 | { | |
1382 | pdr_seg = subseg_new (".pdr", (subsegT) 0); | |
1383 | (void) bfd_set_section_flags (stdoutput, pdr_seg, | |
1384 | SEC_READONLY | SEC_RELOC | |
1385 | | SEC_DEBUGGING); | |
1386 | (void) bfd_set_section_alignment (stdoutput, pdr_seg, 2); | |
1387 | } | |
252b5132 RH |
1388 | #endif |
1389 | ||
1390 | subseg_set (seg, subseg); | |
1391 | } | |
1392 | } | |
1393 | ||
1394 | if (! ECOFF_DEBUGGING) | |
1395 | md_obj_begin (); | |
1396 | } | |
1397 | ||
1398 | void | |
1399 | md_mips_end () | |
1400 | { | |
1401 | if (! ECOFF_DEBUGGING) | |
1402 | md_obj_end (); | |
1403 | } | |
1404 | ||
1405 | void | |
1406 | md_assemble (str) | |
1407 | char *str; | |
1408 | { | |
1409 | struct mips_cl_insn insn; | |
f6688943 TS |
1410 | bfd_reloc_code_real_type unused_reloc[3] |
1411 | = {BFD_RELOC_UNUSED, BFD_RELOC_UNUSED, BFD_RELOC_UNUSED}; | |
252b5132 RH |
1412 | |
1413 | imm_expr.X_op = O_absent; | |
252b5132 | 1414 | offset_expr.X_op = O_absent; |
f6688943 TS |
1415 | imm_reloc[0] = BFD_RELOC_UNUSED; |
1416 | imm_reloc[1] = BFD_RELOC_UNUSED; | |
1417 | imm_reloc[2] = BFD_RELOC_UNUSED; | |
1418 | offset_reloc[0] = BFD_RELOC_UNUSED; | |
1419 | offset_reloc[1] = BFD_RELOC_UNUSED; | |
1420 | offset_reloc[2] = BFD_RELOC_UNUSED; | |
252b5132 RH |
1421 | |
1422 | if (mips_opts.mips16) | |
1423 | mips16_ip (str, &insn); | |
1424 | else | |
1425 | { | |
1426 | mips_ip (str, &insn); | |
beae10d5 KH |
1427 | DBG ((_("returned from mips_ip(%s) insn_opcode = 0x%x\n"), |
1428 | str, insn.insn_opcode)); | |
252b5132 RH |
1429 | } |
1430 | ||
1431 | if (insn_error) | |
1432 | { | |
1433 | as_bad ("%s `%s'", insn_error, str); | |
1434 | return; | |
1435 | } | |
1436 | ||
1437 | if (insn.insn_mo->pinfo == INSN_MACRO) | |
1438 | { | |
1439 | if (mips_opts.mips16) | |
1440 | mips16_macro (&insn); | |
1441 | else | |
1442 | macro (&insn); | |
1443 | } | |
1444 | else | |
1445 | { | |
1446 | if (imm_expr.X_op != O_absent) | |
5e0116d5 | 1447 | append_insn (NULL, &insn, &imm_expr, imm_reloc); |
252b5132 | 1448 | else if (offset_expr.X_op != O_absent) |
5e0116d5 | 1449 | append_insn (NULL, &insn, &offset_expr, offset_reloc); |
252b5132 | 1450 | else |
5e0116d5 | 1451 | append_insn (NULL, &insn, NULL, unused_reloc); |
252b5132 RH |
1452 | } |
1453 | } | |
1454 | ||
5919d012 RS |
1455 | /* Return true if the given relocation might need a matching %lo(). |
1456 | Note that R_MIPS_GOT16 relocations only need a matching %lo() when | |
1457 | applied to local symbols. */ | |
1458 | ||
1459 | static inline bfd_boolean | |
1460 | reloc_needs_lo_p (reloc) | |
1461 | bfd_reloc_code_real_type reloc; | |
1462 | { | |
1463 | return (reloc == BFD_RELOC_HI16_S | |
1464 | || reloc == BFD_RELOC_MIPS_GOT16); | |
1465 | } | |
1466 | ||
1467 | /* Return true if the given fixup is followed by a matching R_MIPS_LO16 | |
1468 | relocation. */ | |
1469 | ||
1470 | static inline bfd_boolean | |
1471 | fixup_has_matching_lo_p (fixp) | |
1472 | fixS *fixp; | |
1473 | { | |
1474 | return (fixp->fx_next != NULL | |
1475 | && fixp->fx_next->fx_r_type == BFD_RELOC_LO16 | |
1476 | && fixp->fx_addsy == fixp->fx_next->fx_addsy | |
1477 | && fixp->fx_offset == fixp->fx_next->fx_offset); | |
1478 | } | |
1479 | ||
252b5132 RH |
1480 | /* See whether instruction IP reads register REG. CLASS is the type |
1481 | of register. */ | |
1482 | ||
1483 | static int | |
1484 | insn_uses_reg (ip, reg, class) | |
1485 | struct mips_cl_insn *ip; | |
1486 | unsigned int reg; | |
1487 | enum mips_regclass class; | |
1488 | { | |
1489 | if (class == MIPS16_REG) | |
1490 | { | |
1491 | assert (mips_opts.mips16); | |
1492 | reg = mips16_to_32_reg_map[reg]; | |
1493 | class = MIPS_GR_REG; | |
1494 | } | |
1495 | ||
85b51719 TS |
1496 | /* Don't report on general register ZERO, since it never changes. */ |
1497 | if (class == MIPS_GR_REG && reg == ZERO) | |
252b5132 RH |
1498 | return 0; |
1499 | ||
1500 | if (class == MIPS_FP_REG) | |
1501 | { | |
1502 | assert (! mips_opts.mips16); | |
1503 | /* If we are called with either $f0 or $f1, we must check $f0. | |
1504 | This is not optimal, because it will introduce an unnecessary | |
1505 | NOP between "lwc1 $f0" and "swc1 $f1". To fix this we would | |
1506 | need to distinguish reading both $f0 and $f1 or just one of | |
1507 | them. Note that we don't have to check the other way, | |
1508 | because there is no instruction that sets both $f0 and $f1 | |
1509 | and requires a delay. */ | |
1510 | if ((ip->insn_mo->pinfo & INSN_READ_FPR_S) | |
1511 | && ((((ip->insn_opcode >> OP_SH_FS) & OP_MASK_FS) &~(unsigned)1) | |
1512 | == (reg &~ (unsigned) 1))) | |
1513 | return 1; | |
1514 | if ((ip->insn_mo->pinfo & INSN_READ_FPR_T) | |
1515 | && ((((ip->insn_opcode >> OP_SH_FT) & OP_MASK_FT) &~(unsigned)1) | |
1516 | == (reg &~ (unsigned) 1))) | |
1517 | return 1; | |
1518 | } | |
1519 | else if (! mips_opts.mips16) | |
1520 | { | |
1521 | if ((ip->insn_mo->pinfo & INSN_READ_GPR_S) | |
1522 | && ((ip->insn_opcode >> OP_SH_RS) & OP_MASK_RS) == reg) | |
1523 | return 1; | |
1524 | if ((ip->insn_mo->pinfo & INSN_READ_GPR_T) | |
1525 | && ((ip->insn_opcode >> OP_SH_RT) & OP_MASK_RT) == reg) | |
1526 | return 1; | |
1527 | } | |
1528 | else | |
1529 | { | |
1530 | if ((ip->insn_mo->pinfo & MIPS16_INSN_READ_X) | |
1531 | && (mips16_to_32_reg_map[((ip->insn_opcode >> MIPS16OP_SH_RX) | |
1532 | & MIPS16OP_MASK_RX)] | |
1533 | == reg)) | |
1534 | return 1; | |
1535 | if ((ip->insn_mo->pinfo & MIPS16_INSN_READ_Y) | |
1536 | && (mips16_to_32_reg_map[((ip->insn_opcode >> MIPS16OP_SH_RY) | |
1537 | & MIPS16OP_MASK_RY)] | |
1538 | == reg)) | |
1539 | return 1; | |
1540 | if ((ip->insn_mo->pinfo & MIPS16_INSN_READ_Z) | |
1541 | && (mips16_to_32_reg_map[((ip->insn_opcode >> MIPS16OP_SH_MOVE32Z) | |
1542 | & MIPS16OP_MASK_MOVE32Z)] | |
1543 | == reg)) | |
1544 | return 1; | |
1545 | if ((ip->insn_mo->pinfo & MIPS16_INSN_READ_T) && reg == TREG) | |
1546 | return 1; | |
1547 | if ((ip->insn_mo->pinfo & MIPS16_INSN_READ_SP) && reg == SP) | |
1548 | return 1; | |
1549 | if ((ip->insn_mo->pinfo & MIPS16_INSN_READ_31) && reg == RA) | |
1550 | return 1; | |
1551 | if ((ip->insn_mo->pinfo & MIPS16_INSN_READ_GPR_X) | |
1552 | && ((ip->insn_opcode >> MIPS16OP_SH_REGR32) | |
1553 | & MIPS16OP_MASK_REGR32) == reg) | |
1554 | return 1; | |
1555 | } | |
1556 | ||
1557 | return 0; | |
1558 | } | |
1559 | ||
1560 | /* This function returns true if modifying a register requires a | |
1561 | delay. */ | |
1562 | ||
1563 | static int | |
1564 | reg_needs_delay (reg) | |
156c2f8b | 1565 | unsigned int reg; |
252b5132 RH |
1566 | { |
1567 | unsigned long prev_pinfo; | |
1568 | ||
1569 | prev_pinfo = prev_insn.insn_mo->pinfo; | |
1570 | if (! mips_opts.noreorder | |
9ce8a5dd | 1571 | && ISA_HAS_COPROC_DELAYS (mips_opts.isa) |
252b5132 RH |
1572 | && ((prev_pinfo & INSN_LOAD_COPROC_DELAY) |
1573 | || (! gpr_interlocks | |
1574 | && (prev_pinfo & INSN_LOAD_MEMORY_DELAY)))) | |
1575 | { | |
1576 | /* A load from a coprocessor or from memory. All load | |
1577 | delays delay the use of general register rt for one | |
1578 | instruction on the r3000. The r6000 and r4000 use | |
1579 | interlocks. */ | |
bdaaa2e1 | 1580 | /* Itbl support may require additional care here. */ |
252b5132 RH |
1581 | know (prev_pinfo & INSN_WRITE_GPR_T); |
1582 | if (reg == ((prev_insn.insn_opcode >> OP_SH_RT) & OP_MASK_RT)) | |
1583 | return 1; | |
1584 | } | |
1585 | ||
1586 | return 0; | |
1587 | } | |
1588 | ||
1589 | /* Mark instruction labels in mips16 mode. This permits the linker to | |
1590 | handle them specially, such as generating jalx instructions when | |
1591 | needed. We also make them odd for the duration of the assembly, in | |
1592 | order to generate the right sort of code. We will make them even | |
1593 | in the adjust_symtab routine, while leaving them marked. This is | |
1594 | convenient for the debugger and the disassembler. The linker knows | |
1595 | to make them odd again. */ | |
1596 | ||
1597 | static void | |
1598 | mips16_mark_labels () | |
1599 | { | |
1600 | if (mips_opts.mips16) | |
1601 | { | |
1602 | struct insn_label_list *l; | |
98aa84af | 1603 | valueT val; |
252b5132 RH |
1604 | |
1605 | for (l = insn_labels; l != NULL; l = l->next) | |
1606 | { | |
1607 | #ifdef OBJ_ELF | |
1608 | if (OUTPUT_FLAVOR == bfd_target_elf_flavour) | |
1609 | S_SET_OTHER (l->label, STO_MIPS16); | |
1610 | #endif | |
98aa84af AM |
1611 | val = S_GET_VALUE (l->label); |
1612 | if ((val & 1) == 0) | |
1613 | S_SET_VALUE (l->label, val + 1); | |
252b5132 RH |
1614 | } |
1615 | } | |
1616 | } | |
1617 | ||
1618 | /* Output an instruction. PLACE is where to put the instruction; if | |
1619 | it is NULL, this uses frag_more to get room. IP is the instruction | |
1620 | information. ADDRESS_EXPR is an operand of the instruction to be | |
1621 | used with RELOC_TYPE. */ | |
1622 | ||
1623 | static void | |
5e0116d5 | 1624 | append_insn (place, ip, address_expr, reloc_type) |
252b5132 RH |
1625 | char *place; |
1626 | struct mips_cl_insn *ip; | |
1627 | expressionS *address_expr; | |
f6688943 | 1628 | bfd_reloc_code_real_type *reloc_type; |
252b5132 RH |
1629 | { |
1630 | register unsigned long prev_pinfo, pinfo; | |
1631 | char *f; | |
f6688943 | 1632 | fixS *fixp[3]; |
252b5132 | 1633 | int nops = 0; |
f5040a92 | 1634 | bfd_boolean force_new_frag = FALSE; |
252b5132 RH |
1635 | |
1636 | /* Mark instruction labels in mips16 mode. */ | |
f9419b05 | 1637 | mips16_mark_labels (); |
252b5132 RH |
1638 | |
1639 | prev_pinfo = prev_insn.insn_mo->pinfo; | |
1640 | pinfo = ip->insn_mo->pinfo; | |
1641 | ||
1642 | if (place == NULL && (! mips_opts.noreorder || prev_nop_frag != NULL)) | |
1643 | { | |
1644 | int prev_prev_nop; | |
1645 | ||
1646 | /* If the previous insn required any delay slots, see if we need | |
1647 | to insert a NOP or two. There are eight kinds of possible | |
1648 | hazards, of which an instruction can have at most one type. | |
1649 | (1) a load from memory delay | |
1650 | (2) a load from a coprocessor delay | |
1651 | (3) an unconditional branch delay | |
1652 | (4) a conditional branch delay | |
1653 | (5) a move to coprocessor register delay | |
1654 | (6) a load coprocessor register from memory delay | |
1655 | (7) a coprocessor condition code delay | |
1656 | (8) a HI/LO special register delay | |
1657 | ||
1658 | There are a lot of optimizations we could do that we don't. | |
1659 | In particular, we do not, in general, reorder instructions. | |
1660 | If you use gcc with optimization, it will reorder | |
1661 | instructions and generally do much more optimization then we | |
1662 | do here; repeating all that work in the assembler would only | |
1663 | benefit hand written assembly code, and does not seem worth | |
1664 | it. */ | |
1665 | ||
1666 | /* This is how a NOP is emitted. */ | |
1667 | #define emit_nop() \ | |
1668 | (mips_opts.mips16 \ | |
1669 | ? md_number_to_chars (frag_more (2), 0x6500, 2) \ | |
1670 | : md_number_to_chars (frag_more (4), 0, 4)) | |
1671 | ||
1672 | /* The previous insn might require a delay slot, depending upon | |
1673 | the contents of the current insn. */ | |
1674 | if (! mips_opts.mips16 | |
9ce8a5dd | 1675 | && ISA_HAS_COPROC_DELAYS (mips_opts.isa) |
252b5132 RH |
1676 | && (((prev_pinfo & INSN_LOAD_COPROC_DELAY) |
1677 | && ! cop_interlocks) | |
1678 | || (! gpr_interlocks | |
1679 | && (prev_pinfo & INSN_LOAD_MEMORY_DELAY)))) | |
1680 | { | |
1681 | /* A load from a coprocessor or from memory. All load | |
1682 | delays delay the use of general register rt for one | |
1683 | instruction on the r3000. The r6000 and r4000 use | |
1684 | interlocks. */ | |
beae10d5 | 1685 | /* Itbl support may require additional care here. */ |
252b5132 RH |
1686 | know (prev_pinfo & INSN_WRITE_GPR_T); |
1687 | if (mips_optimize == 0 | |
1688 | || insn_uses_reg (ip, | |
1689 | ((prev_insn.insn_opcode >> OP_SH_RT) | |
1690 | & OP_MASK_RT), | |
1691 | MIPS_GR_REG)) | |
1692 | ++nops; | |
1693 | } | |
1694 | else if (! mips_opts.mips16 | |
9ce8a5dd | 1695 | && ISA_HAS_COPROC_DELAYS (mips_opts.isa) |
252b5132 | 1696 | && (((prev_pinfo & INSN_COPROC_MOVE_DELAY) |
beae10d5 | 1697 | && ! cop_interlocks) |
e7af610e | 1698 | || (mips_opts.isa == ISA_MIPS1 |
252b5132 RH |
1699 | && (prev_pinfo & INSN_COPROC_MEMORY_DELAY)))) |
1700 | { | |
1701 | /* A generic coprocessor delay. The previous instruction | |
1702 | modified a coprocessor general or control register. If | |
1703 | it modified a control register, we need to avoid any | |
1704 | coprocessor instruction (this is probably not always | |
1705 | required, but it sometimes is). If it modified a general | |
1706 | register, we avoid using that register. | |
1707 | ||
1708 | On the r6000 and r4000 loading a coprocessor register | |
1709 | from memory is interlocked, and does not require a delay. | |
1710 | ||
1711 | This case is not handled very well. There is no special | |
1712 | knowledge of CP0 handling, and the coprocessors other | |
1713 | than the floating point unit are not distinguished at | |
1714 | all. */ | |
1715 | /* Itbl support may require additional care here. FIXME! | |
bdaaa2e1 | 1716 | Need to modify this to include knowledge about |
252b5132 RH |
1717 | user specified delays! */ |
1718 | if (prev_pinfo & INSN_WRITE_FPR_T) | |
1719 | { | |
1720 | if (mips_optimize == 0 | |
1721 | || insn_uses_reg (ip, | |
1722 | ((prev_insn.insn_opcode >> OP_SH_FT) | |
1723 | & OP_MASK_FT), | |
1724 | MIPS_FP_REG)) | |
1725 | ++nops; | |
1726 | } | |
1727 | else if (prev_pinfo & INSN_WRITE_FPR_S) | |
1728 | { | |
1729 | if (mips_optimize == 0 | |
1730 | || insn_uses_reg (ip, | |
1731 | ((prev_insn.insn_opcode >> OP_SH_FS) | |
1732 | & OP_MASK_FS), | |
1733 | MIPS_FP_REG)) | |
1734 | ++nops; | |
1735 | } | |
1736 | else | |
1737 | { | |
1738 | /* We don't know exactly what the previous instruction | |
1739 | does. If the current instruction uses a coprocessor | |
1740 | register, we must insert a NOP. If previous | |
1741 | instruction may set the condition codes, and the | |
1742 | current instruction uses them, we must insert two | |
1743 | NOPS. */ | |
bdaaa2e1 | 1744 | /* Itbl support may require additional care here. */ |
252b5132 RH |
1745 | if (mips_optimize == 0 |
1746 | || ((prev_pinfo & INSN_WRITE_COND_CODE) | |
1747 | && (pinfo & INSN_READ_COND_CODE))) | |
1748 | nops += 2; | |
1749 | else if (pinfo & INSN_COP) | |
1750 | ++nops; | |
1751 | } | |
1752 | } | |
1753 | else if (! mips_opts.mips16 | |
9ce8a5dd | 1754 | && ISA_HAS_COPROC_DELAYS (mips_opts.isa) |
252b5132 RH |
1755 | && (prev_pinfo & INSN_WRITE_COND_CODE) |
1756 | && ! cop_interlocks) | |
1757 | { | |
1758 | /* The previous instruction sets the coprocessor condition | |
1759 | codes, but does not require a general coprocessor delay | |
1760 | (this means it is a floating point comparison | |
1761 | instruction). If this instruction uses the condition | |
1762 | codes, we need to insert a single NOP. */ | |
beae10d5 | 1763 | /* Itbl support may require additional care here. */ |
252b5132 RH |
1764 | if (mips_optimize == 0 |
1765 | || (pinfo & INSN_READ_COND_CODE)) | |
1766 | ++nops; | |
1767 | } | |
6b76fefe CM |
1768 | |
1769 | /* If we're fixing up mfhi/mflo for the r7000 and the | |
1770 | previous insn was an mfhi/mflo and the current insn | |
1771 | reads the register that the mfhi/mflo wrote to, then | |
1772 | insert two nops. */ | |
1773 | ||
1774 | else if (mips_7000_hilo_fix | |
1775 | && MF_HILO_INSN (prev_pinfo) | |
1776 | && insn_uses_reg (ip, ((prev_insn.insn_opcode >> OP_SH_RD) | |
beae10d5 KH |
1777 | & OP_MASK_RD), |
1778 | MIPS_GR_REG)) | |
6b76fefe CM |
1779 | { |
1780 | nops += 2; | |
1781 | } | |
1782 | ||
1783 | /* If we're fixing up mfhi/mflo for the r7000 and the | |
1784 | 2nd previous insn was an mfhi/mflo and the current insn | |
1785 | reads the register that the mfhi/mflo wrote to, then | |
1786 | insert one nop. */ | |
1787 | ||
1788 | else if (mips_7000_hilo_fix | |
1789 | && MF_HILO_INSN (prev_prev_insn.insn_opcode) | |
1790 | && insn_uses_reg (ip, ((prev_prev_insn.insn_opcode >> OP_SH_RD) | |
1791 | & OP_MASK_RD), | |
1792 | MIPS_GR_REG)) | |
bdaaa2e1 | 1793 | |
6b76fefe | 1794 | { |
f9419b05 | 1795 | ++nops; |
6b76fefe | 1796 | } |
bdaaa2e1 | 1797 | |
252b5132 RH |
1798 | else if (prev_pinfo & INSN_READ_LO) |
1799 | { | |
1800 | /* The previous instruction reads the LO register; if the | |
1801 | current instruction writes to the LO register, we must | |
bdaaa2e1 KH |
1802 | insert two NOPS. Some newer processors have interlocks. |
1803 | Also the tx39's multiply instructions can be exectuted | |
252b5132 | 1804 | immediatly after a read from HI/LO (without the delay), |
bdaaa2e1 KH |
1805 | though the tx39's divide insns still do require the |
1806 | delay. */ | |
252b5132 | 1807 | if (! (hilo_interlocks |
ec68c924 | 1808 | || (mips_tune == CPU_R3900 && (pinfo & INSN_MULT))) |
252b5132 RH |
1809 | && (mips_optimize == 0 |
1810 | || (pinfo & INSN_WRITE_LO))) | |
1811 | nops += 2; | |
1812 | /* Most mips16 branch insns don't have a delay slot. | |
1813 | If a read from LO is immediately followed by a branch | |
1814 | to a write to LO we have a read followed by a write | |
1815 | less than 2 insns away. We assume the target of | |
1816 | a branch might be a write to LO, and insert a nop | |
bdaaa2e1 | 1817 | between a read and an immediately following branch. */ |
252b5132 RH |
1818 | else if (mips_opts.mips16 |
1819 | && (mips_optimize == 0 | |
1820 | || (pinfo & MIPS16_INSN_BRANCH))) | |
f9419b05 | 1821 | ++nops; |
252b5132 RH |
1822 | } |
1823 | else if (prev_insn.insn_mo->pinfo & INSN_READ_HI) | |
1824 | { | |
1825 | /* The previous instruction reads the HI register; if the | |
1826 | current instruction writes to the HI register, we must | |
1827 | insert a NOP. Some newer processors have interlocks. | |
bdaaa2e1 | 1828 | Also the note tx39's multiply above. */ |
252b5132 | 1829 | if (! (hilo_interlocks |
ec68c924 | 1830 | || (mips_tune == CPU_R3900 && (pinfo & INSN_MULT))) |
252b5132 RH |
1831 | && (mips_optimize == 0 |
1832 | || (pinfo & INSN_WRITE_HI))) | |
1833 | nops += 2; | |
1834 | /* Most mips16 branch insns don't have a delay slot. | |
1835 | If a read from HI is immediately followed by a branch | |
1836 | to a write to HI we have a read followed by a write | |
1837 | less than 2 insns away. We assume the target of | |
1838 | a branch might be a write to HI, and insert a nop | |
bdaaa2e1 | 1839 | between a read and an immediately following branch. */ |
252b5132 RH |
1840 | else if (mips_opts.mips16 |
1841 | && (mips_optimize == 0 | |
1842 | || (pinfo & MIPS16_INSN_BRANCH))) | |
f9419b05 | 1843 | ++nops; |
252b5132 RH |
1844 | } |
1845 | ||
1846 | /* If the previous instruction was in a noreorder section, then | |
1847 | we don't want to insert the nop after all. */ | |
bdaaa2e1 | 1848 | /* Itbl support may require additional care here. */ |
252b5132 RH |
1849 | if (prev_insn_unreordered) |
1850 | nops = 0; | |
1851 | ||
1852 | /* There are two cases which require two intervening | |
1853 | instructions: 1) setting the condition codes using a move to | |
1854 | coprocessor instruction which requires a general coprocessor | |
1855 | delay and then reading the condition codes 2) reading the HI | |
1856 | or LO register and then writing to it (except on processors | |
1857 | which have interlocks). If we are not already emitting a NOP | |
1858 | instruction, we must check for these cases compared to the | |
1859 | instruction previous to the previous instruction. */ | |
1860 | if ((! mips_opts.mips16 | |
9ce8a5dd | 1861 | && ISA_HAS_COPROC_DELAYS (mips_opts.isa) |
252b5132 RH |
1862 | && (prev_prev_insn.insn_mo->pinfo & INSN_COPROC_MOVE_DELAY) |
1863 | && (prev_prev_insn.insn_mo->pinfo & INSN_WRITE_COND_CODE) | |
1864 | && (pinfo & INSN_READ_COND_CODE) | |
1865 | && ! cop_interlocks) | |
1866 | || ((prev_prev_insn.insn_mo->pinfo & INSN_READ_LO) | |
1867 | && (pinfo & INSN_WRITE_LO) | |
1868 | && ! (hilo_interlocks | |
ec68c924 | 1869 | || (mips_tune == CPU_R3900 && (pinfo & INSN_MULT)))) |
252b5132 RH |
1870 | || ((prev_prev_insn.insn_mo->pinfo & INSN_READ_HI) |
1871 | && (pinfo & INSN_WRITE_HI) | |
1872 | && ! (hilo_interlocks | |
ec68c924 | 1873 | || (mips_tune == CPU_R3900 && (pinfo & INSN_MULT))))) |
252b5132 RH |
1874 | prev_prev_nop = 1; |
1875 | else | |
1876 | prev_prev_nop = 0; | |
1877 | ||
1878 | if (prev_prev_insn_unreordered) | |
1879 | prev_prev_nop = 0; | |
1880 | ||
1881 | if (prev_prev_nop && nops == 0) | |
1882 | ++nops; | |
1883 | ||
60b63b72 RS |
1884 | if (mips_fix_4122_bugs && prev_insn.insn_mo->name) |
1885 | { | |
1886 | /* We're out of bits in pinfo, so we must resort to string | |
1887 | ops here. Shortcuts are selected based on opcodes being | |
1888 | limited to the VR4122 instruction set. */ | |
1889 | int min_nops = 0; | |
1890 | const char *pn = prev_insn.insn_mo->name; | |
1891 | const char *tn = ip->insn_mo->name; | |
1892 | if (strncmp(pn, "macc", 4) == 0 | |
1893 | || strncmp(pn, "dmacc", 5) == 0) | |
1894 | { | |
1895 | /* Errata 21 - [D]DIV[U] after [D]MACC */ | |
1896 | if (strstr (tn, "div")) | |
1897 | { | |
1898 | min_nops = 1; | |
1899 | } | |
1900 | ||
1901 | /* Errata 23 - Continuous DMULT[U]/DMACC instructions */ | |
1902 | if (pn[0] == 'd' /* dmacc */ | |
1903 | && (strncmp(tn, "dmult", 5) == 0 | |
1904 | || strncmp(tn, "dmacc", 5) == 0)) | |
1905 | { | |
1906 | min_nops = 1; | |
1907 | } | |
1908 | ||
1909 | /* Errata 24 - MT{LO,HI} after [D]MACC */ | |
1910 | if (strcmp (tn, "mtlo") == 0 | |
1911 | || strcmp (tn, "mthi") == 0) | |
1912 | { | |
1913 | min_nops = 1; | |
1914 | } | |
1915 | ||
1916 | } | |
1917 | else if (strncmp(pn, "dmult", 5) == 0 | |
1918 | && (strncmp(tn, "dmult", 5) == 0 | |
1919 | || strncmp(tn, "dmacc", 5) == 0)) | |
1920 | { | |
1921 | /* Here is the rest of errata 23. */ | |
1922 | min_nops = 1; | |
1923 | } | |
1924 | if (nops < min_nops) | |
1925 | nops = min_nops; | |
1926 | } | |
1927 | ||
252b5132 RH |
1928 | /* If we are being given a nop instruction, don't bother with |
1929 | one of the nops we would otherwise output. This will only | |
1930 | happen when a nop instruction is used with mips_optimize set | |
1931 | to 0. */ | |
1932 | if (nops > 0 | |
1933 | && ! mips_opts.noreorder | |
156c2f8b | 1934 | && ip->insn_opcode == (unsigned) (mips_opts.mips16 ? 0x6500 : 0)) |
252b5132 RH |
1935 | --nops; |
1936 | ||
1937 | /* Now emit the right number of NOP instructions. */ | |
1938 | if (nops > 0 && ! mips_opts.noreorder) | |
1939 | { | |
1940 | fragS *old_frag; | |
1941 | unsigned long old_frag_offset; | |
1942 | int i; | |
1943 | struct insn_label_list *l; | |
1944 | ||
1945 | old_frag = frag_now; | |
1946 | old_frag_offset = frag_now_fix (); | |
1947 | ||
1948 | for (i = 0; i < nops; i++) | |
1949 | emit_nop (); | |
1950 | ||
1951 | if (listing) | |
1952 | { | |
1953 | listing_prev_line (); | |
1954 | /* We may be at the start of a variant frag. In case we | |
1955 | are, make sure there is enough space for the frag | |
1956 | after the frags created by listing_prev_line. The | |
1957 | argument to frag_grow here must be at least as large | |
1958 | as the argument to all other calls to frag_grow in | |
1959 | this file. We don't have to worry about being in the | |
1960 | middle of a variant frag, because the variants insert | |
1961 | all needed nop instructions themselves. */ | |
1962 | frag_grow (40); | |
1963 | } | |
1964 | ||
1965 | for (l = insn_labels; l != NULL; l = l->next) | |
1966 | { | |
98aa84af AM |
1967 | valueT val; |
1968 | ||
252b5132 | 1969 | assert (S_GET_SEGMENT (l->label) == now_seg); |
49309057 | 1970 | symbol_set_frag (l->label, frag_now); |
98aa84af | 1971 | val = (valueT) frag_now_fix (); |
252b5132 RH |
1972 | /* mips16 text labels are stored as odd. */ |
1973 | if (mips_opts.mips16) | |
f9419b05 | 1974 | ++val; |
98aa84af | 1975 | S_SET_VALUE (l->label, val); |
252b5132 RH |
1976 | } |
1977 | ||
1978 | #ifndef NO_ECOFF_DEBUGGING | |
1979 | if (ECOFF_DEBUGGING) | |
1980 | ecoff_fix_loc (old_frag, old_frag_offset); | |
1981 | #endif | |
1982 | } | |
1983 | else if (prev_nop_frag != NULL) | |
1984 | { | |
1985 | /* We have a frag holding nops we may be able to remove. If | |
1986 | we don't need any nops, we can decrease the size of | |
1987 | prev_nop_frag by the size of one instruction. If we do | |
bdaaa2e1 | 1988 | need some nops, we count them in prev_nops_required. */ |
252b5132 RH |
1989 | if (prev_nop_frag_since == 0) |
1990 | { | |
1991 | if (nops == 0) | |
1992 | { | |
1993 | prev_nop_frag->fr_fix -= mips_opts.mips16 ? 2 : 4; | |
1994 | --prev_nop_frag_holds; | |
1995 | } | |
1996 | else | |
1997 | prev_nop_frag_required += nops; | |
1998 | } | |
1999 | else | |
2000 | { | |
2001 | if (prev_prev_nop == 0) | |
2002 | { | |
2003 | prev_nop_frag->fr_fix -= mips_opts.mips16 ? 2 : 4; | |
2004 | --prev_nop_frag_holds; | |
2005 | } | |
2006 | else | |
2007 | ++prev_nop_frag_required; | |
2008 | } | |
2009 | ||
2010 | if (prev_nop_frag_holds <= prev_nop_frag_required) | |
2011 | prev_nop_frag = NULL; | |
2012 | ||
2013 | ++prev_nop_frag_since; | |
2014 | ||
2015 | /* Sanity check: by the time we reach the second instruction | |
2016 | after prev_nop_frag, we should have used up all the nops | |
2017 | one way or another. */ | |
2018 | assert (prev_nop_frag_since <= 1 || prev_nop_frag == NULL); | |
2019 | } | |
2020 | } | |
2021 | ||
4a6a3df4 AO |
2022 | if (place == NULL |
2023 | && address_expr | |
0b25d3e6 | 2024 | && *reloc_type == BFD_RELOC_16_PCREL_S2 |
4a6a3df4 AO |
2025 | && (pinfo & INSN_UNCOND_BRANCH_DELAY || pinfo & INSN_COND_BRANCH_DELAY |
2026 | || pinfo & INSN_COND_BRANCH_LIKELY) | |
2027 | && mips_relax_branch | |
2028 | /* Don't try branch relaxation within .set nomacro, or within | |
2029 | .set noat if we use $at for PIC computations. If it turns | |
2030 | out that the branch was out-of-range, we'll get an error. */ | |
2031 | && !mips_opts.warn_about_macros | |
2032 | && !(mips_opts.noat && mips_pic != NO_PIC) | |
2033 | && !mips_opts.mips16) | |
2034 | { | |
2035 | f = frag_var (rs_machine_dependent, | |
2036 | relaxed_branch_length | |
2037 | (NULL, NULL, | |
2038 | (pinfo & INSN_UNCOND_BRANCH_DELAY) ? -1 | |
2039 | : (pinfo & INSN_COND_BRANCH_LIKELY) ? 1 : 0), 4, | |
2040 | RELAX_BRANCH_ENCODE | |
af6ae2ad | 2041 | (pinfo & INSN_UNCOND_BRANCH_DELAY, |
4a6a3df4 AO |
2042 | pinfo & INSN_COND_BRANCH_LIKELY, |
2043 | pinfo & INSN_WRITE_GPR_31, | |
2044 | 0), | |
2045 | address_expr->X_add_symbol, | |
2046 | address_expr->X_add_number, | |
2047 | 0); | |
2048 | *reloc_type = BFD_RELOC_UNUSED; | |
2049 | } | |
2050 | else if (*reloc_type > BFD_RELOC_UNUSED) | |
252b5132 RH |
2051 | { |
2052 | /* We need to set up a variant frag. */ | |
2053 | assert (mips_opts.mips16 && address_expr != NULL); | |
2054 | f = frag_var (rs_machine_dependent, 4, 0, | |
f6688943 | 2055 | RELAX_MIPS16_ENCODE (*reloc_type - BFD_RELOC_UNUSED, |
252b5132 RH |
2056 | mips16_small, mips16_ext, |
2057 | (prev_pinfo | |
2058 | & INSN_UNCOND_BRANCH_DELAY), | |
f6688943 | 2059 | (*prev_insn_reloc_type |
252b5132 | 2060 | == BFD_RELOC_MIPS16_JMP)), |
c4e7957c | 2061 | make_expr_symbol (address_expr), 0, NULL); |
252b5132 RH |
2062 | } |
2063 | else if (place != NULL) | |
2064 | f = place; | |
2065 | else if (mips_opts.mips16 | |
2066 | && ! ip->use_extend | |
f6688943 | 2067 | && *reloc_type != BFD_RELOC_MIPS16_JMP) |
252b5132 RH |
2068 | { |
2069 | /* Make sure there is enough room to swap this instruction with | |
2070 | a following jump instruction. */ | |
2071 | frag_grow (6); | |
2072 | f = frag_more (2); | |
2073 | } | |
2074 | else | |
2075 | { | |
2076 | if (mips_opts.mips16 | |
2077 | && mips_opts.noreorder | |
2078 | && (prev_pinfo & INSN_UNCOND_BRANCH_DELAY) != 0) | |
2079 | as_warn (_("extended instruction in delay slot")); | |
2080 | ||
2081 | f = frag_more (4); | |
2082 | } | |
2083 | ||
f6688943 TS |
2084 | fixp[0] = fixp[1] = fixp[2] = NULL; |
2085 | if (address_expr != NULL && *reloc_type < BFD_RELOC_UNUSED) | |
252b5132 RH |
2086 | { |
2087 | if (address_expr->X_op == O_constant) | |
2088 | { | |
4db1a35d | 2089 | valueT tmp; |
f6688943 TS |
2090 | |
2091 | switch (*reloc_type) | |
252b5132 RH |
2092 | { |
2093 | case BFD_RELOC_32: | |
2094 | ip->insn_opcode |= address_expr->X_add_number; | |
2095 | break; | |
2096 | ||
f6688943 TS |
2097 | case BFD_RELOC_MIPS_HIGHEST: |
2098 | tmp = (address_expr->X_add_number + 0x800080008000) >> 16; | |
2099 | tmp >>= 16; | |
2100 | ip->insn_opcode |= (tmp >> 16) & 0xffff; | |
2101 | break; | |
2102 | ||
2103 | case BFD_RELOC_MIPS_HIGHER: | |
2104 | tmp = (address_expr->X_add_number + 0x80008000) >> 16; | |
2105 | ip->insn_opcode |= (tmp >> 16) & 0xffff; | |
2106 | break; | |
2107 | ||
2108 | case BFD_RELOC_HI16_S: | |
2109 | ip->insn_opcode |= ((address_expr->X_add_number + 0x8000) | |
2110 | >> 16) & 0xffff; | |
2111 | break; | |
2112 | ||
2113 | case BFD_RELOC_HI16: | |
2114 | ip->insn_opcode |= (address_expr->X_add_number >> 16) & 0xffff; | |
2115 | break; | |
2116 | ||
252b5132 | 2117 | case BFD_RELOC_LO16: |
ed6fb7bd | 2118 | case BFD_RELOC_MIPS_GOT_DISP: |
252b5132 RH |
2119 | ip->insn_opcode |= address_expr->X_add_number & 0xffff; |
2120 | break; | |
2121 | ||
2122 | case BFD_RELOC_MIPS_JMP: | |
2123 | if ((address_expr->X_add_number & 3) != 0) | |
2124 | as_bad (_("jump to misaligned address (0x%lx)"), | |
2125 | (unsigned long) address_expr->X_add_number); | |
f3c0ec86 | 2126 | if (address_expr->X_add_number & ~0xfffffff) |
7496292d TS |
2127 | as_bad (_("jump address range overflow (0x%lx)"), |
2128 | (unsigned long) address_expr->X_add_number); | |
252b5132 RH |
2129 | ip->insn_opcode |= (address_expr->X_add_number >> 2) & 0x3ffffff; |
2130 | break; | |
2131 | ||
2132 | case BFD_RELOC_MIPS16_JMP: | |
2133 | if ((address_expr->X_add_number & 3) != 0) | |
2134 | as_bad (_("jump to misaligned address (0x%lx)"), | |
2135 | (unsigned long) address_expr->X_add_number); | |
f3c0ec86 | 2136 | if (address_expr->X_add_number & ~0xfffffff) |
7496292d TS |
2137 | as_bad (_("jump address range overflow (0x%lx)"), |
2138 | (unsigned long) address_expr->X_add_number); | |
252b5132 RH |
2139 | ip->insn_opcode |= |
2140 | (((address_expr->X_add_number & 0x7c0000) << 3) | |
2141 | | ((address_expr->X_add_number & 0xf800000) >> 7) | |
2142 | | ((address_expr->X_add_number & 0x3fffc) >> 2)); | |
2143 | break; | |
2144 | ||
252b5132 RH |
2145 | case BFD_RELOC_16_PCREL_S2: |
2146 | goto need_reloc; | |
2147 | ||
2148 | default: | |
2149 | internalError (); | |
2150 | } | |
2151 | } | |
2152 | else | |
2153 | { | |
2154 | need_reloc: | |
f6688943 | 2155 | /* Don't generate a reloc if we are writing into a variant frag. */ |
252b5132 RH |
2156 | if (place == NULL) |
2157 | { | |
f6688943 TS |
2158 | fixp[0] = fix_new_exp (frag_now, f - frag_now->fr_literal, 4, |
2159 | address_expr, | |
0b25d3e6 | 2160 | *reloc_type == BFD_RELOC_16_PCREL_S2, |
f6688943 TS |
2161 | reloc_type[0]); |
2162 | ||
b6ff326e | 2163 | /* These relocations can have an addend that won't fit in |
f6688943 TS |
2164 | 4 octets for 64bit assembly. */ |
2165 | if (HAVE_64BIT_GPRS && | |
2166 | (*reloc_type == BFD_RELOC_16 | |
98d3f06f KH |
2167 | || *reloc_type == BFD_RELOC_32 |
2168 | || *reloc_type == BFD_RELOC_MIPS_JMP | |
2169 | || *reloc_type == BFD_RELOC_HI16_S | |
2170 | || *reloc_type == BFD_RELOC_LO16 | |
2171 | || *reloc_type == BFD_RELOC_GPREL16 | |
2172 | || *reloc_type == BFD_RELOC_MIPS_LITERAL | |
2173 | || *reloc_type == BFD_RELOC_GPREL32 | |
2174 | || *reloc_type == BFD_RELOC_64 | |
2175 | || *reloc_type == BFD_RELOC_CTOR | |
2176 | || *reloc_type == BFD_RELOC_MIPS_SUB | |
2177 | || *reloc_type == BFD_RELOC_MIPS_HIGHEST | |
2178 | || *reloc_type == BFD_RELOC_MIPS_HIGHER | |
2179 | || *reloc_type == BFD_RELOC_MIPS_SCN_DISP | |
2180 | || *reloc_type == BFD_RELOC_MIPS_REL16 | |
2181 | || *reloc_type == BFD_RELOC_MIPS_RELGOT)) | |
f6688943 TS |
2182 | fixp[0]->fx_no_overflow = 1; |
2183 | ||
5919d012 | 2184 | if (reloc_needs_lo_p (*reloc_type)) |
252b5132 RH |
2185 | { |
2186 | struct mips_hi_fixup *hi_fixup; | |
2187 | ||
5919d012 RS |
2188 | /* Reuse the last entry if it already has a matching %lo. */ |
2189 | hi_fixup = mips_hi_fixup_list; | |
2190 | if (hi_fixup == 0 | |
2191 | || !fixup_has_matching_lo_p (hi_fixup->fixp)) | |
2192 | { | |
2193 | hi_fixup = ((struct mips_hi_fixup *) | |
2194 | xmalloc (sizeof (struct mips_hi_fixup))); | |
2195 | hi_fixup->next = mips_hi_fixup_list; | |
2196 | mips_hi_fixup_list = hi_fixup; | |
2197 | } | |
f6688943 | 2198 | hi_fixup->fixp = fixp[0]; |
252b5132 | 2199 | hi_fixup->seg = now_seg; |
252b5132 | 2200 | } |
f6688943 TS |
2201 | |
2202 | if (reloc_type[1] != BFD_RELOC_UNUSED) | |
2203 | { | |
2204 | /* FIXME: This symbol can be one of | |
2205 | RSS_UNDEF, RSS_GP, RSS_GP0, RSS_LOC. */ | |
2206 | address_expr->X_op = O_absent; | |
2207 | address_expr->X_add_symbol = 0; | |
2208 | address_expr->X_add_number = 0; | |
2209 | ||
2210 | fixp[1] = fix_new_exp (frag_now, f - frag_now->fr_literal, | |
b34976b6 | 2211 | 4, address_expr, FALSE, |
f6688943 TS |
2212 | reloc_type[1]); |
2213 | ||
b6ff326e | 2214 | /* These relocations can have an addend that won't fit in |
f6688943 TS |
2215 | 4 octets for 64bit assembly. */ |
2216 | if (HAVE_64BIT_GPRS && | |
2217 | (*reloc_type == BFD_RELOC_16 | |
2218 | || *reloc_type == BFD_RELOC_32 | |
2219 | || *reloc_type == BFD_RELOC_MIPS_JMP | |
2220 | || *reloc_type == BFD_RELOC_HI16_S | |
2221 | || *reloc_type == BFD_RELOC_LO16 | |
2222 | || *reloc_type == BFD_RELOC_GPREL16 | |
2223 | || *reloc_type == BFD_RELOC_MIPS_LITERAL | |
2224 | || *reloc_type == BFD_RELOC_GPREL32 | |
2225 | || *reloc_type == BFD_RELOC_64 | |
2226 | || *reloc_type == BFD_RELOC_CTOR | |
2227 | || *reloc_type == BFD_RELOC_MIPS_SUB | |
2228 | || *reloc_type == BFD_RELOC_MIPS_HIGHEST | |
2229 | || *reloc_type == BFD_RELOC_MIPS_HIGHER | |
2230 | || *reloc_type == BFD_RELOC_MIPS_SCN_DISP | |
2231 | || *reloc_type == BFD_RELOC_MIPS_REL16 | |
2232 | || *reloc_type == BFD_RELOC_MIPS_RELGOT)) | |
98d3f06f | 2233 | fixp[1]->fx_no_overflow = 1; |
f6688943 TS |
2234 | |
2235 | if (reloc_type[2] != BFD_RELOC_UNUSED) | |
2236 | { | |
2237 | address_expr->X_op = O_absent; | |
2238 | address_expr->X_add_symbol = 0; | |
2239 | address_expr->X_add_number = 0; | |
2240 | ||
2241 | fixp[2] = fix_new_exp (frag_now, | |
2242 | f - frag_now->fr_literal, 4, | |
b34976b6 | 2243 | address_expr, FALSE, |
f6688943 TS |
2244 | reloc_type[2]); |
2245 | ||
b6ff326e | 2246 | /* These relocations can have an addend that won't fit in |
f6688943 TS |
2247 | 4 octets for 64bit assembly. */ |
2248 | if (HAVE_64BIT_GPRS && | |
2249 | (*reloc_type == BFD_RELOC_16 | |
2250 | || *reloc_type == BFD_RELOC_32 | |
2251 | || *reloc_type == BFD_RELOC_MIPS_JMP | |
2252 | || *reloc_type == BFD_RELOC_HI16_S | |
2253 | || *reloc_type == BFD_RELOC_LO16 | |
2254 | || *reloc_type == BFD_RELOC_GPREL16 | |
2255 | || *reloc_type == BFD_RELOC_MIPS_LITERAL | |
2256 | || *reloc_type == BFD_RELOC_GPREL32 | |
2257 | || *reloc_type == BFD_RELOC_64 | |
2258 | || *reloc_type == BFD_RELOC_CTOR | |
2259 | || *reloc_type == BFD_RELOC_MIPS_SUB | |
2260 | || *reloc_type == BFD_RELOC_MIPS_HIGHEST | |
2261 | || *reloc_type == BFD_RELOC_MIPS_HIGHER | |
2262 | || *reloc_type == BFD_RELOC_MIPS_SCN_DISP | |
2263 | || *reloc_type == BFD_RELOC_MIPS_REL16 | |
2264 | || *reloc_type == BFD_RELOC_MIPS_RELGOT)) | |
98d3f06f | 2265 | fixp[2]->fx_no_overflow = 1; |
f6688943 TS |
2266 | } |
2267 | } | |
252b5132 RH |
2268 | } |
2269 | } | |
2270 | } | |
2271 | ||
2272 | if (! mips_opts.mips16) | |
c5dd6aab DJ |
2273 | { |
2274 | md_number_to_chars (f, ip->insn_opcode, 4); | |
2275 | #ifdef OBJ_ELF | |
2276 | dwarf2_emit_insn (4); | |
2277 | #endif | |
2278 | } | |
f6688943 | 2279 | else if (*reloc_type == BFD_RELOC_MIPS16_JMP) |
252b5132 RH |
2280 | { |
2281 | md_number_to_chars (f, ip->insn_opcode >> 16, 2); | |
2282 | md_number_to_chars (f + 2, ip->insn_opcode & 0xffff, 2); | |
c5dd6aab DJ |
2283 | #ifdef OBJ_ELF |
2284 | dwarf2_emit_insn (4); | |
2285 | #endif | |
252b5132 RH |
2286 | } |
2287 | else | |
2288 | { | |
2289 | if (ip->use_extend) | |
2290 | { | |
2291 | md_number_to_chars (f, 0xf000 | ip->extend, 2); | |
2292 | f += 2; | |
2293 | } | |
2294 | md_number_to_chars (f, ip->insn_opcode, 2); | |
c5dd6aab DJ |
2295 | #ifdef OBJ_ELF |
2296 | dwarf2_emit_insn (ip->use_extend ? 4 : 2); | |
2297 | #endif | |
252b5132 RH |
2298 | } |
2299 | ||
2300 | /* Update the register mask information. */ | |
2301 | if (! mips_opts.mips16) | |
2302 | { | |
2303 | if (pinfo & INSN_WRITE_GPR_D) | |
2304 | mips_gprmask |= 1 << ((ip->insn_opcode >> OP_SH_RD) & OP_MASK_RD); | |
2305 | if ((pinfo & (INSN_WRITE_GPR_T | INSN_READ_GPR_T)) != 0) | |
2306 | mips_gprmask |= 1 << ((ip->insn_opcode >> OP_SH_RT) & OP_MASK_RT); | |
2307 | if (pinfo & INSN_READ_GPR_S) | |
2308 | mips_gprmask |= 1 << ((ip->insn_opcode >> OP_SH_RS) & OP_MASK_RS); | |
2309 | if (pinfo & INSN_WRITE_GPR_31) | |
f9419b05 | 2310 | mips_gprmask |= 1 << RA; |
252b5132 RH |
2311 | if (pinfo & INSN_WRITE_FPR_D) |
2312 | mips_cprmask[1] |= 1 << ((ip->insn_opcode >> OP_SH_FD) & OP_MASK_FD); | |
2313 | if ((pinfo & (INSN_WRITE_FPR_S | INSN_READ_FPR_S)) != 0) | |
2314 | mips_cprmask[1] |= 1 << ((ip->insn_opcode >> OP_SH_FS) & OP_MASK_FS); | |
2315 | if ((pinfo & (INSN_WRITE_FPR_T | INSN_READ_FPR_T)) != 0) | |
2316 | mips_cprmask[1] |= 1 << ((ip->insn_opcode >> OP_SH_FT) & OP_MASK_FT); | |
2317 | if ((pinfo & INSN_READ_FPR_R) != 0) | |
2318 | mips_cprmask[1] |= 1 << ((ip->insn_opcode >> OP_SH_FR) & OP_MASK_FR); | |
2319 | if (pinfo & INSN_COP) | |
2320 | { | |
bdaaa2e1 KH |
2321 | /* We don't keep enough information to sort these cases out. |
2322 | The itbl support does keep this information however, although | |
2323 | we currently don't support itbl fprmats as part of the cop | |
2324 | instruction. May want to add this support in the future. */ | |
252b5132 RH |
2325 | } |
2326 | /* Never set the bit for $0, which is always zero. */ | |
beae10d5 | 2327 | mips_gprmask &= ~1 << 0; |
252b5132 RH |
2328 | } |
2329 | else | |
2330 | { | |
2331 | if (pinfo & (MIPS16_INSN_WRITE_X | MIPS16_INSN_READ_X)) | |
2332 | mips_gprmask |= 1 << ((ip->insn_opcode >> MIPS16OP_SH_RX) | |
2333 | & MIPS16OP_MASK_RX); | |
2334 | if (pinfo & (MIPS16_INSN_WRITE_Y | MIPS16_INSN_READ_Y)) | |
2335 | mips_gprmask |= 1 << ((ip->insn_opcode >> MIPS16OP_SH_RY) | |
2336 | & MIPS16OP_MASK_RY); | |
2337 | if (pinfo & MIPS16_INSN_WRITE_Z) | |
2338 | mips_gprmask |= 1 << ((ip->insn_opcode >> MIPS16OP_SH_RZ) | |
2339 | & MIPS16OP_MASK_RZ); | |
2340 | if (pinfo & (MIPS16_INSN_WRITE_T | MIPS16_INSN_READ_T)) | |
2341 | mips_gprmask |= 1 << TREG; | |
2342 | if (pinfo & (MIPS16_INSN_WRITE_SP | MIPS16_INSN_READ_SP)) | |
2343 | mips_gprmask |= 1 << SP; | |
2344 | if (pinfo & (MIPS16_INSN_WRITE_31 | MIPS16_INSN_READ_31)) | |
2345 | mips_gprmask |= 1 << RA; | |
2346 | if (pinfo & MIPS16_INSN_WRITE_GPR_Y) | |
2347 | mips_gprmask |= 1 << MIPS16OP_EXTRACT_REG32R (ip->insn_opcode); | |
2348 | if (pinfo & MIPS16_INSN_READ_Z) | |
2349 | mips_gprmask |= 1 << ((ip->insn_opcode >> MIPS16OP_SH_MOVE32Z) | |
2350 | & MIPS16OP_MASK_MOVE32Z); | |
2351 | if (pinfo & MIPS16_INSN_READ_GPR_X) | |
2352 | mips_gprmask |= 1 << ((ip->insn_opcode >> MIPS16OP_SH_REGR32) | |
2353 | & MIPS16OP_MASK_REGR32); | |
2354 | } | |
2355 | ||
2356 | if (place == NULL && ! mips_opts.noreorder) | |
2357 | { | |
2358 | /* Filling the branch delay slot is more complex. We try to | |
2359 | switch the branch with the previous instruction, which we can | |
2360 | do if the previous instruction does not set up a condition | |
2361 | that the branch tests and if the branch is not itself the | |
2362 | target of any branch. */ | |
2363 | if ((pinfo & INSN_UNCOND_BRANCH_DELAY) | |
2364 | || (pinfo & INSN_COND_BRANCH_DELAY)) | |
2365 | { | |
2366 | if (mips_optimize < 2 | |
2367 | /* If we have seen .set volatile or .set nomove, don't | |
2368 | optimize. */ | |
2369 | || mips_opts.nomove != 0 | |
2370 | /* If we had to emit any NOP instructions, then we | |
2371 | already know we can not swap. */ | |
2372 | || nops != 0 | |
2373 | /* If we don't even know the previous insn, we can not | |
bdaaa2e1 | 2374 | swap. */ |
252b5132 RH |
2375 | || ! prev_insn_valid |
2376 | /* If the previous insn is already in a branch delay | |
2377 | slot, then we can not swap. */ | |
2378 | || prev_insn_is_delay_slot | |
2379 | /* If the previous previous insn was in a .set | |
2380 | noreorder, we can't swap. Actually, the MIPS | |
2381 | assembler will swap in this situation. However, gcc | |
2382 | configured -with-gnu-as will generate code like | |
2383 | .set noreorder | |
2384 | lw $4,XXX | |
2385 | .set reorder | |
2386 | INSN | |
2387 | bne $4,$0,foo | |
2388 | in which we can not swap the bne and INSN. If gcc is | |
2389 | not configured -with-gnu-as, it does not output the | |
2390 | .set pseudo-ops. We don't have to check | |
2391 | prev_insn_unreordered, because prev_insn_valid will | |
2392 | be 0 in that case. We don't want to use | |
2393 | prev_prev_insn_valid, because we do want to be able | |
2394 | to swap at the start of a function. */ | |
2395 | || prev_prev_insn_unreordered | |
2396 | /* If the branch is itself the target of a branch, we | |
2397 | can not swap. We cheat on this; all we check for is | |
2398 | whether there is a label on this instruction. If | |
2399 | there are any branches to anything other than a | |
2400 | label, users must use .set noreorder. */ | |
2401 | || insn_labels != NULL | |
2402 | /* If the previous instruction is in a variant frag, we | |
2403 | can not do the swap. This does not apply to the | |
2404 | mips16, which uses variant frags for different | |
2405 | purposes. */ | |
2406 | || (! mips_opts.mips16 | |
2407 | && prev_insn_frag->fr_type == rs_machine_dependent) | |
2408 | /* If the branch reads the condition codes, we don't | |
2409 | even try to swap, because in the sequence | |
2410 | ctc1 $X,$31 | |
2411 | INSN | |
2412 | INSN | |
2413 | bc1t LABEL | |
2414 | we can not swap, and I don't feel like handling that | |
2415 | case. */ | |
2416 | || (! mips_opts.mips16 | |
9ce8a5dd | 2417 | && ISA_HAS_COPROC_DELAYS (mips_opts.isa) |
252b5132 RH |
2418 | && (pinfo & INSN_READ_COND_CODE)) |
2419 | /* We can not swap with an instruction that requires a | |
2420 | delay slot, becase the target of the branch might | |
2421 | interfere with that instruction. */ | |
2422 | || (! mips_opts.mips16 | |
9ce8a5dd | 2423 | && ISA_HAS_COPROC_DELAYS (mips_opts.isa) |
252b5132 | 2424 | && (prev_pinfo |
bdaaa2e1 | 2425 | /* Itbl support may require additional care here. */ |
252b5132 RH |
2426 | & (INSN_LOAD_COPROC_DELAY |
2427 | | INSN_COPROC_MOVE_DELAY | |
2428 | | INSN_WRITE_COND_CODE))) | |
2429 | || (! (hilo_interlocks | |
ec68c924 | 2430 | || (mips_tune == CPU_R3900 && (pinfo & INSN_MULT))) |
252b5132 RH |
2431 | && (prev_pinfo |
2432 | & (INSN_READ_LO | |
2433 | | INSN_READ_HI))) | |
2434 | || (! mips_opts.mips16 | |
2435 | && ! gpr_interlocks | |
2436 | && (prev_pinfo & INSN_LOAD_MEMORY_DELAY)) | |
2437 | || (! mips_opts.mips16 | |
e7af610e | 2438 | && mips_opts.isa == ISA_MIPS1 |
bdaaa2e1 | 2439 | /* Itbl support may require additional care here. */ |
252b5132 RH |
2440 | && (prev_pinfo & INSN_COPROC_MEMORY_DELAY)) |
2441 | /* We can not swap with a branch instruction. */ | |
2442 | || (prev_pinfo | |
2443 | & (INSN_UNCOND_BRANCH_DELAY | |
2444 | | INSN_COND_BRANCH_DELAY | |
2445 | | INSN_COND_BRANCH_LIKELY)) | |
2446 | /* We do not swap with a trap instruction, since it | |
2447 | complicates trap handlers to have the trap | |
2448 | instruction be in a delay slot. */ | |
2449 | || (prev_pinfo & INSN_TRAP) | |
2450 | /* If the branch reads a register that the previous | |
2451 | instruction sets, we can not swap. */ | |
2452 | || (! mips_opts.mips16 | |
2453 | && (prev_pinfo & INSN_WRITE_GPR_T) | |
2454 | && insn_uses_reg (ip, | |
2455 | ((prev_insn.insn_opcode >> OP_SH_RT) | |
2456 | & OP_MASK_RT), | |
2457 | MIPS_GR_REG)) | |
2458 | || (! mips_opts.mips16 | |
2459 | && (prev_pinfo & INSN_WRITE_GPR_D) | |
2460 | && insn_uses_reg (ip, | |
2461 | ((prev_insn.insn_opcode >> OP_SH_RD) | |
2462 | & OP_MASK_RD), | |
2463 | MIPS_GR_REG)) | |
2464 | || (mips_opts.mips16 | |
2465 | && (((prev_pinfo & MIPS16_INSN_WRITE_X) | |
2466 | && insn_uses_reg (ip, | |
2467 | ((prev_insn.insn_opcode | |
2468 | >> MIPS16OP_SH_RX) | |
2469 | & MIPS16OP_MASK_RX), | |
2470 | MIPS16_REG)) | |
2471 | || ((prev_pinfo & MIPS16_INSN_WRITE_Y) | |
2472 | && insn_uses_reg (ip, | |
2473 | ((prev_insn.insn_opcode | |
2474 | >> MIPS16OP_SH_RY) | |
2475 | & MIPS16OP_MASK_RY), | |
2476 | MIPS16_REG)) | |
2477 | || ((prev_pinfo & MIPS16_INSN_WRITE_Z) | |
2478 | && insn_uses_reg (ip, | |
2479 | ((prev_insn.insn_opcode | |
2480 | >> MIPS16OP_SH_RZ) | |
2481 | & MIPS16OP_MASK_RZ), | |
2482 | MIPS16_REG)) | |
2483 | || ((prev_pinfo & MIPS16_INSN_WRITE_T) | |
2484 | && insn_uses_reg (ip, TREG, MIPS_GR_REG)) | |
2485 | || ((prev_pinfo & MIPS16_INSN_WRITE_31) | |
2486 | && insn_uses_reg (ip, RA, MIPS_GR_REG)) | |
2487 | || ((prev_pinfo & MIPS16_INSN_WRITE_GPR_Y) | |
2488 | && insn_uses_reg (ip, | |
2489 | MIPS16OP_EXTRACT_REG32R (prev_insn. | |
2490 | insn_opcode), | |
2491 | MIPS_GR_REG)))) | |
2492 | /* If the branch writes a register that the previous | |
2493 | instruction sets, we can not swap (we know that | |
2494 | branches write only to RD or to $31). */ | |
2495 | || (! mips_opts.mips16 | |
2496 | && (prev_pinfo & INSN_WRITE_GPR_T) | |
2497 | && (((pinfo & INSN_WRITE_GPR_D) | |
2498 | && (((prev_insn.insn_opcode >> OP_SH_RT) & OP_MASK_RT) | |
2499 | == ((ip->insn_opcode >> OP_SH_RD) & OP_MASK_RD))) | |
2500 | || ((pinfo & INSN_WRITE_GPR_31) | |
2501 | && (((prev_insn.insn_opcode >> OP_SH_RT) | |
2502 | & OP_MASK_RT) | |
f9419b05 | 2503 | == RA)))) |
252b5132 RH |
2504 | || (! mips_opts.mips16 |
2505 | && (prev_pinfo & INSN_WRITE_GPR_D) | |
2506 | && (((pinfo & INSN_WRITE_GPR_D) | |
2507 | && (((prev_insn.insn_opcode >> OP_SH_RD) & OP_MASK_RD) | |
2508 | == ((ip->insn_opcode >> OP_SH_RD) & OP_MASK_RD))) | |
2509 | || ((pinfo & INSN_WRITE_GPR_31) | |
2510 | && (((prev_insn.insn_opcode >> OP_SH_RD) | |
2511 | & OP_MASK_RD) | |
f9419b05 | 2512 | == RA)))) |
252b5132 RH |
2513 | || (mips_opts.mips16 |
2514 | && (pinfo & MIPS16_INSN_WRITE_31) | |
2515 | && ((prev_pinfo & MIPS16_INSN_WRITE_31) | |
2516 | || ((prev_pinfo & MIPS16_INSN_WRITE_GPR_Y) | |
2517 | && (MIPS16OP_EXTRACT_REG32R (prev_insn.insn_opcode) | |
2518 | == RA)))) | |
2519 | /* If the branch writes a register that the previous | |
2520 | instruction reads, we can not swap (we know that | |
2521 | branches only write to RD or to $31). */ | |
2522 | || (! mips_opts.mips16 | |
2523 | && (pinfo & INSN_WRITE_GPR_D) | |
2524 | && insn_uses_reg (&prev_insn, | |
2525 | ((ip->insn_opcode >> OP_SH_RD) | |
2526 | & OP_MASK_RD), | |
2527 | MIPS_GR_REG)) | |
2528 | || (! mips_opts.mips16 | |
2529 | && (pinfo & INSN_WRITE_GPR_31) | |
f9419b05 | 2530 | && insn_uses_reg (&prev_insn, RA, MIPS_GR_REG)) |
252b5132 RH |
2531 | || (mips_opts.mips16 |
2532 | && (pinfo & MIPS16_INSN_WRITE_31) | |
2533 | && insn_uses_reg (&prev_insn, RA, MIPS_GR_REG)) | |
2534 | /* If we are generating embedded PIC code, the branch | |
2535 | might be expanded into a sequence which uses $at, so | |
2536 | we can't swap with an instruction which reads it. */ | |
2537 | || (mips_pic == EMBEDDED_PIC | |
2538 | && insn_uses_reg (&prev_insn, AT, MIPS_GR_REG)) | |
2539 | /* If the previous previous instruction has a load | |
2540 | delay, and sets a register that the branch reads, we | |
2541 | can not swap. */ | |
2542 | || (! mips_opts.mips16 | |
9ce8a5dd | 2543 | && ISA_HAS_COPROC_DELAYS (mips_opts.isa) |
bdaaa2e1 | 2544 | /* Itbl support may require additional care here. */ |
252b5132 RH |
2545 | && ((prev_prev_insn.insn_mo->pinfo & INSN_LOAD_COPROC_DELAY) |
2546 | || (! gpr_interlocks | |
2547 | && (prev_prev_insn.insn_mo->pinfo | |
2548 | & INSN_LOAD_MEMORY_DELAY))) | |
2549 | && insn_uses_reg (ip, | |
2550 | ((prev_prev_insn.insn_opcode >> OP_SH_RT) | |
2551 | & OP_MASK_RT), | |
2552 | MIPS_GR_REG)) | |
2553 | /* If one instruction sets a condition code and the | |
2554 | other one uses a condition code, we can not swap. */ | |
2555 | || ((pinfo & INSN_READ_COND_CODE) | |
2556 | && (prev_pinfo & INSN_WRITE_COND_CODE)) | |
2557 | || ((pinfo & INSN_WRITE_COND_CODE) | |
2558 | && (prev_pinfo & INSN_READ_COND_CODE)) | |
2559 | /* If the previous instruction uses the PC, we can not | |
2560 | swap. */ | |
2561 | || (mips_opts.mips16 | |
2562 | && (prev_pinfo & MIPS16_INSN_READ_PC)) | |
2563 | /* If the previous instruction was extended, we can not | |
2564 | swap. */ | |
2565 | || (mips_opts.mips16 && prev_insn_extended) | |
2566 | /* If the previous instruction had a fixup in mips16 | |
2567 | mode, we can not swap. This normally means that the | |
2568 | previous instruction was a 4 byte branch anyhow. */ | |
f6688943 | 2569 | || (mips_opts.mips16 && prev_insn_fixp[0]) |
bdaaa2e1 KH |
2570 | /* If the previous instruction is a sync, sync.l, or |
2571 | sync.p, we can not swap. */ | |
f173e82e | 2572 | || (prev_pinfo & INSN_SYNC)) |
252b5132 RH |
2573 | { |
2574 | /* We could do even better for unconditional branches to | |
2575 | portions of this object file; we could pick up the | |
2576 | instruction at the destination, put it in the delay | |
2577 | slot, and bump the destination address. */ | |
2578 | emit_nop (); | |
2579 | /* Update the previous insn information. */ | |
2580 | prev_prev_insn = *ip; | |
2581 | prev_insn.insn_mo = &dummy_opcode; | |
2582 | } | |
2583 | else | |
2584 | { | |
2585 | /* It looks like we can actually do the swap. */ | |
2586 | if (! mips_opts.mips16) | |
2587 | { | |
2588 | char *prev_f; | |
2589 | char temp[4]; | |
2590 | ||
2591 | prev_f = prev_insn_frag->fr_literal + prev_insn_where; | |
2592 | memcpy (temp, prev_f, 4); | |
2593 | memcpy (prev_f, f, 4); | |
2594 | memcpy (f, temp, 4); | |
f6688943 TS |
2595 | if (prev_insn_fixp[0]) |
2596 | { | |
2597 | prev_insn_fixp[0]->fx_frag = frag_now; | |
2598 | prev_insn_fixp[0]->fx_where = f - frag_now->fr_literal; | |
2599 | } | |
2600 | if (prev_insn_fixp[1]) | |
2601 | { | |
2602 | prev_insn_fixp[1]->fx_frag = frag_now; | |
2603 | prev_insn_fixp[1]->fx_where = f - frag_now->fr_literal; | |
2604 | } | |
2605 | if (prev_insn_fixp[2]) | |
252b5132 | 2606 | { |
f6688943 TS |
2607 | prev_insn_fixp[2]->fx_frag = frag_now; |
2608 | prev_insn_fixp[2]->fx_where = f - frag_now->fr_literal; | |
252b5132 | 2609 | } |
f5040a92 AO |
2610 | if (prev_insn_fixp[0] && HAVE_NEWABI |
2611 | && prev_insn_frag != frag_now | |
2612 | && (prev_insn_fixp[0]->fx_r_type | |
2613 | == BFD_RELOC_MIPS_GOT_DISP | |
2614 | || (prev_insn_fixp[0]->fx_r_type | |
2615 | == BFD_RELOC_MIPS_CALL16))) | |
2616 | { | |
2617 | /* To avoid confusion in tc_gen_reloc, we must | |
2618 | ensure that this does not become a variant | |
2619 | frag. */ | |
2620 | force_new_frag = TRUE; | |
2621 | } | |
f6688943 | 2622 | if (fixp[0]) |
252b5132 | 2623 | { |
f6688943 TS |
2624 | fixp[0]->fx_frag = prev_insn_frag; |
2625 | fixp[0]->fx_where = prev_insn_where; | |
2626 | } | |
2627 | if (fixp[1]) | |
2628 | { | |
2629 | fixp[1]->fx_frag = prev_insn_frag; | |
2630 | fixp[1]->fx_where = prev_insn_where; | |
2631 | } | |
2632 | if (fixp[2]) | |
2633 | { | |
2634 | fixp[2]->fx_frag = prev_insn_frag; | |
2635 | fixp[2]->fx_where = prev_insn_where; | |
252b5132 RH |
2636 | } |
2637 | } | |
2638 | else | |
2639 | { | |
2640 | char *prev_f; | |
2641 | char temp[2]; | |
2642 | ||
f6688943 TS |
2643 | assert (prev_insn_fixp[0] == NULL); |
2644 | assert (prev_insn_fixp[1] == NULL); | |
2645 | assert (prev_insn_fixp[2] == NULL); | |
252b5132 RH |
2646 | prev_f = prev_insn_frag->fr_literal + prev_insn_where; |
2647 | memcpy (temp, prev_f, 2); | |
2648 | memcpy (prev_f, f, 2); | |
f6688943 | 2649 | if (*reloc_type != BFD_RELOC_MIPS16_JMP) |
252b5132 | 2650 | { |
f6688943 | 2651 | assert (*reloc_type == BFD_RELOC_UNUSED); |
252b5132 RH |
2652 | memcpy (f, temp, 2); |
2653 | } | |
2654 | else | |
2655 | { | |
2656 | memcpy (f, f + 2, 2); | |
2657 | memcpy (f + 2, temp, 2); | |
2658 | } | |
f6688943 TS |
2659 | if (fixp[0]) |
2660 | { | |
2661 | fixp[0]->fx_frag = prev_insn_frag; | |
2662 | fixp[0]->fx_where = prev_insn_where; | |
2663 | } | |
2664 | if (fixp[1]) | |
2665 | { | |
2666 | fixp[1]->fx_frag = prev_insn_frag; | |
2667 | fixp[1]->fx_where = prev_insn_where; | |
2668 | } | |
2669 | if (fixp[2]) | |
252b5132 | 2670 | { |
f6688943 TS |
2671 | fixp[2]->fx_frag = prev_insn_frag; |
2672 | fixp[2]->fx_where = prev_insn_where; | |
252b5132 RH |
2673 | } |
2674 | } | |
2675 | ||
2676 | /* Update the previous insn information; leave prev_insn | |
2677 | unchanged. */ | |
2678 | prev_prev_insn = *ip; | |
2679 | } | |
2680 | prev_insn_is_delay_slot = 1; | |
2681 | ||
2682 | /* If that was an unconditional branch, forget the previous | |
2683 | insn information. */ | |
2684 | if (pinfo & INSN_UNCOND_BRANCH_DELAY) | |
2685 | { | |
2686 | prev_prev_insn.insn_mo = &dummy_opcode; | |
2687 | prev_insn.insn_mo = &dummy_opcode; | |
2688 | } | |
2689 | ||
f6688943 TS |
2690 | prev_insn_fixp[0] = NULL; |
2691 | prev_insn_fixp[1] = NULL; | |
2692 | prev_insn_fixp[2] = NULL; | |
2693 | prev_insn_reloc_type[0] = BFD_RELOC_UNUSED; | |
2694 | prev_insn_reloc_type[1] = BFD_RELOC_UNUSED; | |
2695 | prev_insn_reloc_type[2] = BFD_RELOC_UNUSED; | |
252b5132 RH |
2696 | prev_insn_extended = 0; |
2697 | } | |
2698 | else if (pinfo & INSN_COND_BRANCH_LIKELY) | |
2699 | { | |
2700 | /* We don't yet optimize a branch likely. What we should do | |
2701 | is look at the target, copy the instruction found there | |
2702 | into the delay slot, and increment the branch to jump to | |
2703 | the next instruction. */ | |
2704 | emit_nop (); | |
2705 | /* Update the previous insn information. */ | |
2706 | prev_prev_insn = *ip; | |
2707 | prev_insn.insn_mo = &dummy_opcode; | |
f6688943 TS |
2708 | prev_insn_fixp[0] = NULL; |
2709 | prev_insn_fixp[1] = NULL; | |
2710 | prev_insn_fixp[2] = NULL; | |
2711 | prev_insn_reloc_type[0] = BFD_RELOC_UNUSED; | |
2712 | prev_insn_reloc_type[1] = BFD_RELOC_UNUSED; | |
2713 | prev_insn_reloc_type[2] = BFD_RELOC_UNUSED; | |
252b5132 RH |
2714 | prev_insn_extended = 0; |
2715 | } | |
2716 | else | |
2717 | { | |
2718 | /* Update the previous insn information. */ | |
2719 | if (nops > 0) | |
2720 | prev_prev_insn.insn_mo = &dummy_opcode; | |
2721 | else | |
2722 | prev_prev_insn = prev_insn; | |
2723 | prev_insn = *ip; | |
2724 | ||
2725 | /* Any time we see a branch, we always fill the delay slot | |
2726 | immediately; since this insn is not a branch, we know it | |
2727 | is not in a delay slot. */ | |
2728 | prev_insn_is_delay_slot = 0; | |
2729 | ||
f6688943 TS |
2730 | prev_insn_fixp[0] = fixp[0]; |
2731 | prev_insn_fixp[1] = fixp[1]; | |
2732 | prev_insn_fixp[2] = fixp[2]; | |
2733 | prev_insn_reloc_type[0] = reloc_type[0]; | |
2734 | prev_insn_reloc_type[1] = reloc_type[1]; | |
2735 | prev_insn_reloc_type[2] = reloc_type[2]; | |
252b5132 RH |
2736 | if (mips_opts.mips16) |
2737 | prev_insn_extended = (ip->use_extend | |
f6688943 | 2738 | || *reloc_type > BFD_RELOC_UNUSED); |
252b5132 RH |
2739 | } |
2740 | ||
2741 | prev_prev_insn_unreordered = prev_insn_unreordered; | |
2742 | prev_insn_unreordered = 0; | |
2743 | prev_insn_frag = frag_now; | |
2744 | prev_insn_where = f - frag_now->fr_literal; | |
2745 | prev_insn_valid = 1; | |
2746 | } | |
2747 | else if (place == NULL) | |
2748 | { | |
2749 | /* We need to record a bit of information even when we are not | |
2750 | reordering, in order to determine the base address for mips16 | |
2751 | PC relative relocs. */ | |
2752 | prev_prev_insn = prev_insn; | |
2753 | prev_insn = *ip; | |
f6688943 TS |
2754 | prev_insn_reloc_type[0] = reloc_type[0]; |
2755 | prev_insn_reloc_type[1] = reloc_type[1]; | |
2756 | prev_insn_reloc_type[2] = reloc_type[2]; | |
252b5132 RH |
2757 | prev_prev_insn_unreordered = prev_insn_unreordered; |
2758 | prev_insn_unreordered = 1; | |
2759 | } | |
2760 | ||
2761 | /* We just output an insn, so the next one doesn't have a label. */ | |
2762 | mips_clear_insn_labels (); | |
f5040a92 AO |
2763 | |
2764 | /* We must ensure that the frag to which an instruction that was | |
2765 | moved from a non-variant frag doesn't become a variant frag, | |
2766 | otherwise tc_gen_reloc may get confused. */ | |
2767 | if (force_new_frag) | |
2768 | { | |
2769 | frag_wane (frag_now); | |
2770 | frag_new (0); | |
2771 | } | |
252b5132 RH |
2772 | } |
2773 | ||
2774 | /* This function forgets that there was any previous instruction or | |
2775 | label. If PRESERVE is non-zero, it remembers enough information to | |
bdaaa2e1 | 2776 | know whether nops are needed before a noreorder section. */ |
252b5132 RH |
2777 | |
2778 | static void | |
2779 | mips_no_prev_insn (preserve) | |
2780 | int preserve; | |
2781 | { | |
2782 | if (! preserve) | |
2783 | { | |
2784 | prev_insn.insn_mo = &dummy_opcode; | |
2785 | prev_prev_insn.insn_mo = &dummy_opcode; | |
2786 | prev_nop_frag = NULL; | |
2787 | prev_nop_frag_holds = 0; | |
2788 | prev_nop_frag_required = 0; | |
2789 | prev_nop_frag_since = 0; | |
2790 | } | |
2791 | prev_insn_valid = 0; | |
2792 | prev_insn_is_delay_slot = 0; | |
2793 | prev_insn_unreordered = 0; | |
2794 | prev_insn_extended = 0; | |
f6688943 TS |
2795 | prev_insn_reloc_type[0] = BFD_RELOC_UNUSED; |
2796 | prev_insn_reloc_type[1] = BFD_RELOC_UNUSED; | |
2797 | prev_insn_reloc_type[2] = BFD_RELOC_UNUSED; | |
252b5132 RH |
2798 | prev_prev_insn_unreordered = 0; |
2799 | mips_clear_insn_labels (); | |
2800 | } | |
2801 | ||
2802 | /* This function must be called whenever we turn on noreorder or emit | |
2803 | something other than instructions. It inserts any NOPS which might | |
2804 | be needed by the previous instruction, and clears the information | |
2805 | kept for the previous instructions. The INSNS parameter is true if | |
bdaaa2e1 | 2806 | instructions are to follow. */ |
252b5132 RH |
2807 | |
2808 | static void | |
2809 | mips_emit_delays (insns) | |
b34976b6 | 2810 | bfd_boolean insns; |
252b5132 RH |
2811 | { |
2812 | if (! mips_opts.noreorder) | |
2813 | { | |
2814 | int nops; | |
2815 | ||
2816 | nops = 0; | |
2817 | if ((! mips_opts.mips16 | |
9ce8a5dd | 2818 | && ISA_HAS_COPROC_DELAYS (mips_opts.isa) |
252b5132 RH |
2819 | && (! cop_interlocks |
2820 | && (prev_insn.insn_mo->pinfo | |
2821 | & (INSN_LOAD_COPROC_DELAY | |
2822 | | INSN_COPROC_MOVE_DELAY | |
2823 | | INSN_WRITE_COND_CODE)))) | |
2824 | || (! hilo_interlocks | |
2825 | && (prev_insn.insn_mo->pinfo | |
2826 | & (INSN_READ_LO | |
2827 | | INSN_READ_HI))) | |
2828 | || (! mips_opts.mips16 | |
2829 | && ! gpr_interlocks | |
bdaaa2e1 | 2830 | && (prev_insn.insn_mo->pinfo |
252b5132 RH |
2831 | & INSN_LOAD_MEMORY_DELAY)) |
2832 | || (! mips_opts.mips16 | |
e7af610e | 2833 | && mips_opts.isa == ISA_MIPS1 |
252b5132 RH |
2834 | && (prev_insn.insn_mo->pinfo |
2835 | & INSN_COPROC_MEMORY_DELAY))) | |
2836 | { | |
beae10d5 | 2837 | /* Itbl support may require additional care here. */ |
252b5132 RH |
2838 | ++nops; |
2839 | if ((! mips_opts.mips16 | |
9ce8a5dd | 2840 | && ISA_HAS_COPROC_DELAYS (mips_opts.isa) |
252b5132 RH |
2841 | && (! cop_interlocks |
2842 | && prev_insn.insn_mo->pinfo & INSN_WRITE_COND_CODE)) | |
2843 | || (! hilo_interlocks | |
2844 | && ((prev_insn.insn_mo->pinfo & INSN_READ_HI) | |
2845 | || (prev_insn.insn_mo->pinfo & INSN_READ_LO)))) | |
2846 | ++nops; | |
2847 | ||
2848 | if (prev_insn_unreordered) | |
2849 | nops = 0; | |
2850 | } | |
2851 | else if ((! mips_opts.mips16 | |
9ce8a5dd | 2852 | && ISA_HAS_COPROC_DELAYS (mips_opts.isa) |
252b5132 RH |
2853 | && (! cop_interlocks |
2854 | && prev_prev_insn.insn_mo->pinfo & INSN_WRITE_COND_CODE)) | |
2855 | || (! hilo_interlocks | |
2856 | && ((prev_prev_insn.insn_mo->pinfo & INSN_READ_HI) | |
2857 | || (prev_prev_insn.insn_mo->pinfo & INSN_READ_LO)))) | |
2858 | { | |
beae10d5 | 2859 | /* Itbl support may require additional care here. */ |
252b5132 RH |
2860 | if (! prev_prev_insn_unreordered) |
2861 | ++nops; | |
2862 | } | |
2863 | ||
60b63b72 RS |
2864 | if (mips_fix_4122_bugs && prev_insn.insn_mo->name) |
2865 | { | |
2866 | int min_nops = 0; | |
2867 | const char *pn = prev_insn.insn_mo->name; | |
2868 | if (strncmp(pn, "macc", 4) == 0 | |
2869 | || strncmp(pn, "dmacc", 5) == 0 | |
2870 | || strncmp(pn, "dmult", 5) == 0) | |
2871 | { | |
2872 | min_nops = 1; | |
2873 | } | |
2874 | if (nops < min_nops) | |
2875 | nops = min_nops; | |
2876 | } | |
2877 | ||
252b5132 RH |
2878 | if (nops > 0) |
2879 | { | |
2880 | struct insn_label_list *l; | |
2881 | ||
2882 | if (insns) | |
2883 | { | |
2884 | /* Record the frag which holds the nop instructions, so | |
2885 | that we can remove them if we don't need them. */ | |
2886 | frag_grow (mips_opts.mips16 ? nops * 2 : nops * 4); | |
2887 | prev_nop_frag = frag_now; | |
2888 | prev_nop_frag_holds = nops; | |
2889 | prev_nop_frag_required = 0; | |
2890 | prev_nop_frag_since = 0; | |
2891 | } | |
2892 | ||
2893 | for (; nops > 0; --nops) | |
2894 | emit_nop (); | |
2895 | ||
2896 | if (insns) | |
2897 | { | |
2898 | /* Move on to a new frag, so that it is safe to simply | |
bdaaa2e1 | 2899 | decrease the size of prev_nop_frag. */ |
252b5132 RH |
2900 | frag_wane (frag_now); |
2901 | frag_new (0); | |
2902 | } | |
2903 | ||
2904 | for (l = insn_labels; l != NULL; l = l->next) | |
2905 | { | |
98aa84af AM |
2906 | valueT val; |
2907 | ||
252b5132 | 2908 | assert (S_GET_SEGMENT (l->label) == now_seg); |
49309057 | 2909 | symbol_set_frag (l->label, frag_now); |
98aa84af | 2910 | val = (valueT) frag_now_fix (); |
252b5132 RH |
2911 | /* mips16 text labels are stored as odd. */ |
2912 | if (mips_opts.mips16) | |
f9419b05 | 2913 | ++val; |
98aa84af | 2914 | S_SET_VALUE (l->label, val); |
252b5132 RH |
2915 | } |
2916 | } | |
2917 | } | |
2918 | ||
2919 | /* Mark instruction labels in mips16 mode. */ | |
f9419b05 | 2920 | if (insns) |
252b5132 RH |
2921 | mips16_mark_labels (); |
2922 | ||
2923 | mips_no_prev_insn (insns); | |
2924 | } | |
2925 | ||
2926 | /* Build an instruction created by a macro expansion. This is passed | |
2927 | a pointer to the count of instructions created so far, an | |
2928 | expression, the name of the instruction to build, an operand format | |
2929 | string, and corresponding arguments. */ | |
2930 | ||
2931 | #ifdef USE_STDARG | |
2932 | static void | |
2933 | macro_build (char *place, | |
2934 | int *counter, | |
2935 | expressionS * ep, | |
2936 | const char *name, | |
2937 | const char *fmt, | |
2938 | ...) | |
2939 | #else | |
2940 | static void | |
2941 | macro_build (place, counter, ep, name, fmt, va_alist) | |
2942 | char *place; | |
2943 | int *counter; | |
2944 | expressionS *ep; | |
2945 | const char *name; | |
2946 | const char *fmt; | |
2947 | va_dcl | |
2948 | #endif | |
2949 | { | |
2950 | struct mips_cl_insn insn; | |
f6688943 | 2951 | bfd_reloc_code_real_type r[3]; |
252b5132 | 2952 | va_list args; |
252b5132 RH |
2953 | |
2954 | #ifdef USE_STDARG | |
2955 | va_start (args, fmt); | |
2956 | #else | |
2957 | va_start (args); | |
2958 | #endif | |
2959 | ||
2960 | /* | |
2961 | * If the macro is about to expand into a second instruction, | |
2962 | * print a warning if needed. We need to pass ip as a parameter | |
2963 | * to generate a better warning message here... | |
2964 | */ | |
2965 | if (mips_opts.warn_about_macros && place == NULL && *counter == 1) | |
2966 | as_warn (_("Macro instruction expanded into multiple instructions")); | |
2967 | ||
80cc45a5 EC |
2968 | /* |
2969 | * If the macro is about to expand into a second instruction, | |
2970 | * and it is in a delay slot, print a warning. | |
2971 | */ | |
2972 | if (place == NULL | |
2973 | && *counter == 1 | |
2974 | && mips_opts.noreorder | |
2975 | && (prev_prev_insn.insn_mo->pinfo | |
2976 | & (INSN_UNCOND_BRANCH_DELAY | INSN_COND_BRANCH_DELAY | |
2b2e39bf | 2977 | | INSN_COND_BRANCH_LIKELY)) != 0) |
80cc45a5 EC |
2978 | as_warn (_("Macro instruction expanded into multiple instructions in a branch delay slot")); |
2979 | ||
252b5132 | 2980 | if (place == NULL) |
f9419b05 | 2981 | ++*counter; /* bump instruction counter */ |
252b5132 RH |
2982 | |
2983 | if (mips_opts.mips16) | |
2984 | { | |
2985 | mips16_macro_build (place, counter, ep, name, fmt, args); | |
2986 | va_end (args); | |
2987 | return; | |
2988 | } | |
2989 | ||
f6688943 TS |
2990 | r[0] = BFD_RELOC_UNUSED; |
2991 | r[1] = BFD_RELOC_UNUSED; | |
2992 | r[2] = BFD_RELOC_UNUSED; | |
252b5132 RH |
2993 | insn.insn_mo = (struct mips_opcode *) hash_find (op_hash, name); |
2994 | assert (insn.insn_mo); | |
2995 | assert (strcmp (name, insn.insn_mo->name) == 0); | |
2996 | ||
2997 | /* Search until we get a match for NAME. */ | |
2998 | while (1) | |
2999 | { | |
b34976b6 | 3000 | /* It is assumed here that macros will never generate |
deec1734 | 3001 | MDMX or MIPS-3D instructions. */ |
252b5132 RH |
3002 | if (strcmp (fmt, insn.insn_mo->args) == 0 |
3003 | && insn.insn_mo->pinfo != INSN_MACRO | |
aec421e0 TS |
3004 | && OPCODE_IS_MEMBER (insn.insn_mo, |
3005 | (mips_opts.isa | |
3396de36 | 3006 | | (file_ase_mips16 ? INSN_MIPS16 : 0)), |
aec421e0 | 3007 | mips_arch) |
ec68c924 | 3008 | && (mips_arch != CPU_R4650 || (insn.insn_mo->pinfo & FP_D) == 0)) |
252b5132 RH |
3009 | break; |
3010 | ||
3011 | ++insn.insn_mo; | |
3012 | assert (insn.insn_mo->name); | |
3013 | assert (strcmp (name, insn.insn_mo->name) == 0); | |
3014 | } | |
3015 | ||
3016 | insn.insn_opcode = insn.insn_mo->match; | |
3017 | for (;;) | |
3018 | { | |
3019 | switch (*fmt++) | |
3020 | { | |
3021 | case '\0': | |
3022 | break; | |
3023 | ||
3024 | case ',': | |
3025 | case '(': | |
3026 | case ')': | |
3027 | continue; | |
3028 | ||
3029 | case 't': | |
3030 | case 'w': | |
3031 | case 'E': | |
38487616 | 3032 | insn.insn_opcode |= va_arg (args, int) << OP_SH_RT; |
252b5132 RH |
3033 | continue; |
3034 | ||
3035 | case 'c': | |
38487616 TS |
3036 | insn.insn_opcode |= va_arg (args, int) << OP_SH_CODE; |
3037 | continue; | |
3038 | ||
252b5132 RH |
3039 | case 'T': |
3040 | case 'W': | |
38487616 | 3041 | insn.insn_opcode |= va_arg (args, int) << OP_SH_FT; |
252b5132 RH |
3042 | continue; |
3043 | ||
3044 | case 'd': | |
3045 | case 'G': | |
af7ee8bf | 3046 | case 'K': |
38487616 | 3047 | insn.insn_opcode |= va_arg (args, int) << OP_SH_RD; |
252b5132 RH |
3048 | continue; |
3049 | ||
4372b673 NC |
3050 | case 'U': |
3051 | { | |
3052 | int tmp = va_arg (args, int); | |
3053 | ||
38487616 TS |
3054 | insn.insn_opcode |= tmp << OP_SH_RT; |
3055 | insn.insn_opcode |= tmp << OP_SH_RD; | |
beae10d5 | 3056 | continue; |
4372b673 NC |
3057 | } |
3058 | ||
252b5132 RH |
3059 | case 'V': |
3060 | case 'S': | |
38487616 | 3061 | insn.insn_opcode |= va_arg (args, int) << OP_SH_FS; |
252b5132 RH |
3062 | continue; |
3063 | ||
3064 | case 'z': | |
3065 | continue; | |
3066 | ||
3067 | case '<': | |
38487616 | 3068 | insn.insn_opcode |= va_arg (args, int) << OP_SH_SHAMT; |
252b5132 RH |
3069 | continue; |
3070 | ||
3071 | case 'D': | |
38487616 | 3072 | insn.insn_opcode |= va_arg (args, int) << OP_SH_FD; |
252b5132 RH |
3073 | continue; |
3074 | ||
3075 | case 'B': | |
38487616 | 3076 | insn.insn_opcode |= va_arg (args, int) << OP_SH_CODE20; |
252b5132 RH |
3077 | continue; |
3078 | ||
4372b673 | 3079 | case 'J': |
38487616 | 3080 | insn.insn_opcode |= va_arg (args, int) << OP_SH_CODE19; |
4372b673 NC |
3081 | continue; |
3082 | ||
252b5132 | 3083 | case 'q': |
38487616 | 3084 | insn.insn_opcode |= va_arg (args, int) << OP_SH_CODE2; |
252b5132 RH |
3085 | continue; |
3086 | ||
3087 | case 'b': | |
3088 | case 's': | |
3089 | case 'r': | |
3090 | case 'v': | |
38487616 | 3091 | insn.insn_opcode |= va_arg (args, int) << OP_SH_RS; |
252b5132 RH |
3092 | continue; |
3093 | ||
3094 | case 'i': | |
3095 | case 'j': | |
3096 | case 'o': | |
f6688943 | 3097 | *r = (bfd_reloc_code_real_type) va_arg (args, int); |
cdf6fd85 | 3098 | assert (*r == BFD_RELOC_GPREL16 |
f6688943 TS |
3099 | || *r == BFD_RELOC_MIPS_LITERAL |
3100 | || *r == BFD_RELOC_MIPS_HIGHER | |
3101 | || *r == BFD_RELOC_HI16_S | |
3102 | || *r == BFD_RELOC_LO16 | |
3103 | || *r == BFD_RELOC_MIPS_GOT16 | |
3104 | || *r == BFD_RELOC_MIPS_CALL16 | |
438c16b8 TS |
3105 | || *r == BFD_RELOC_MIPS_GOT_DISP |
3106 | || *r == BFD_RELOC_MIPS_GOT_PAGE | |
3107 | || *r == BFD_RELOC_MIPS_GOT_OFST | |
f6688943 TS |
3108 | || *r == BFD_RELOC_MIPS_GOT_LO16 |
3109 | || *r == BFD_RELOC_MIPS_CALL_LO16 | |
252b5132 | 3110 | || (ep->X_op == O_subtract |
f6688943 | 3111 | && *r == BFD_RELOC_PCREL_LO16)); |
252b5132 RH |
3112 | continue; |
3113 | ||
3114 | case 'u': | |
f6688943 | 3115 | *r = (bfd_reloc_code_real_type) va_arg (args, int); |
252b5132 RH |
3116 | assert (ep != NULL |
3117 | && (ep->X_op == O_constant | |
3118 | || (ep->X_op == O_symbol | |
f6688943 TS |
3119 | && (*r == BFD_RELOC_MIPS_HIGHEST |
3120 | || *r == BFD_RELOC_HI16_S | |
3121 | || *r == BFD_RELOC_HI16 | |
3122 | || *r == BFD_RELOC_GPREL16 | |
3123 | || *r == BFD_RELOC_MIPS_GOT_HI16 | |
3124 | || *r == BFD_RELOC_MIPS_CALL_HI16)) | |
252b5132 | 3125 | || (ep->X_op == O_subtract |
f6688943 | 3126 | && *r == BFD_RELOC_PCREL_HI16_S))); |
252b5132 RH |
3127 | continue; |
3128 | ||
3129 | case 'p': | |
3130 | assert (ep != NULL); | |
3131 | /* | |
3132 | * This allows macro() to pass an immediate expression for | |
3133 | * creating short branches without creating a symbol. | |
0b25d3e6 AO |
3134 | * Note that the expression still might come from the assembly |
3135 | * input, in which case the value is not checked for range nor | |
3136 | * is a relocation entry generated (yuck). | |
252b5132 RH |
3137 | */ |
3138 | if (ep->X_op == O_constant) | |
3139 | { | |
3140 | insn.insn_opcode |= (ep->X_add_number >> 2) & 0xffff; | |
3141 | ep = NULL; | |
3142 | } | |
3143 | else | |
0b25d3e6 | 3144 | *r = BFD_RELOC_16_PCREL_S2; |
252b5132 RH |
3145 | continue; |
3146 | ||
3147 | case 'a': | |
3148 | assert (ep != NULL); | |
f6688943 | 3149 | *r = BFD_RELOC_MIPS_JMP; |
252b5132 RH |
3150 | continue; |
3151 | ||
3152 | case 'C': | |
3153 | insn.insn_opcode |= va_arg (args, unsigned long); | |
3154 | continue; | |
3155 | ||
3156 | default: | |
3157 | internalError (); | |
3158 | } | |
3159 | break; | |
3160 | } | |
3161 | va_end (args); | |
f6688943 | 3162 | assert (*r == BFD_RELOC_UNUSED ? ep == NULL : ep != NULL); |
252b5132 | 3163 | |
5e0116d5 | 3164 | append_insn (place, &insn, ep, r); |
252b5132 RH |
3165 | } |
3166 | ||
3167 | static void | |
3168 | mips16_macro_build (place, counter, ep, name, fmt, args) | |
3169 | char *place; | |
43841e91 | 3170 | int *counter ATTRIBUTE_UNUSED; |
252b5132 RH |
3171 | expressionS *ep; |
3172 | const char *name; | |
3173 | const char *fmt; | |
3174 | va_list args; | |
3175 | { | |
3176 | struct mips_cl_insn insn; | |
f6688943 TS |
3177 | bfd_reloc_code_real_type r[3] |
3178 | = {BFD_RELOC_UNUSED, BFD_RELOC_UNUSED, BFD_RELOC_UNUSED}; | |
252b5132 | 3179 | |
252b5132 RH |
3180 | insn.insn_mo = (struct mips_opcode *) hash_find (mips16_op_hash, name); |
3181 | assert (insn.insn_mo); | |
3182 | assert (strcmp (name, insn.insn_mo->name) == 0); | |
3183 | ||
3184 | while (strcmp (fmt, insn.insn_mo->args) != 0 | |
3185 | || insn.insn_mo->pinfo == INSN_MACRO) | |
3186 | { | |
3187 | ++insn.insn_mo; | |
3188 | assert (insn.insn_mo->name); | |
3189 | assert (strcmp (name, insn.insn_mo->name) == 0); | |
3190 | } | |
3191 | ||
3192 | insn.insn_opcode = insn.insn_mo->match; | |
b34976b6 | 3193 | insn.use_extend = FALSE; |
252b5132 RH |
3194 | |
3195 | for (;;) | |
3196 | { | |
3197 | int c; | |
3198 | ||
3199 | c = *fmt++; | |
3200 | switch (c) | |
3201 | { | |
3202 | case '\0': | |
3203 | break; | |
3204 | ||
3205 | case ',': | |
3206 | case '(': | |
3207 | case ')': | |
3208 | continue; | |
3209 | ||
3210 | case 'y': | |
3211 | case 'w': | |
3212 | insn.insn_opcode |= va_arg (args, int) << MIPS16OP_SH_RY; | |
3213 | continue; | |
3214 | ||
3215 | case 'x': | |
3216 | case 'v': | |
3217 | insn.insn_opcode |= va_arg (args, int) << MIPS16OP_SH_RX; | |
3218 | continue; | |
3219 | ||
3220 | case 'z': | |
3221 | insn.insn_opcode |= va_arg (args, int) << MIPS16OP_SH_RZ; | |
3222 | continue; | |
3223 | ||
3224 | case 'Z': | |
3225 | insn.insn_opcode |= va_arg (args, int) << MIPS16OP_SH_MOVE32Z; | |
3226 | continue; | |
3227 | ||
3228 | case '0': | |
3229 | case 'S': | |
3230 | case 'P': | |
3231 | case 'R': | |
3232 | continue; | |
3233 | ||
3234 | case 'X': | |
3235 | insn.insn_opcode |= va_arg (args, int) << MIPS16OP_SH_REGR32; | |
3236 | continue; | |
3237 | ||
3238 | case 'Y': | |
3239 | { | |
3240 | int regno; | |
3241 | ||
3242 | regno = va_arg (args, int); | |
3243 | regno = ((regno & 7) << 2) | ((regno & 0x18) >> 3); | |
3244 | insn.insn_opcode |= regno << MIPS16OP_SH_REG32R; | |
3245 | } | |
3246 | continue; | |
3247 | ||
3248 | case '<': | |
3249 | case '>': | |
3250 | case '4': | |
3251 | case '5': | |
3252 | case 'H': | |
3253 | case 'W': | |
3254 | case 'D': | |
3255 | case 'j': | |
3256 | case '8': | |
3257 | case 'V': | |
3258 | case 'C': | |
3259 | case 'U': | |
3260 | case 'k': | |
3261 | case 'K': | |
3262 | case 'p': | |
3263 | case 'q': | |
3264 | { | |
3265 | assert (ep != NULL); | |
3266 | ||
3267 | if (ep->X_op != O_constant) | |
874e8986 | 3268 | *r = (int) BFD_RELOC_UNUSED + c; |
252b5132 RH |
3269 | else |
3270 | { | |
b34976b6 AM |
3271 | mips16_immed (NULL, 0, c, ep->X_add_number, FALSE, FALSE, |
3272 | FALSE, &insn.insn_opcode, &insn.use_extend, | |
c4e7957c | 3273 | &insn.extend); |
252b5132 | 3274 | ep = NULL; |
f6688943 | 3275 | *r = BFD_RELOC_UNUSED; |
252b5132 RH |
3276 | } |
3277 | } | |
3278 | continue; | |
3279 | ||
3280 | case '6': | |
3281 | insn.insn_opcode |= va_arg (args, int) << MIPS16OP_SH_IMM6; | |
3282 | continue; | |
3283 | } | |
3284 | ||
3285 | break; | |
3286 | } | |
3287 | ||
f6688943 | 3288 | assert (*r == BFD_RELOC_UNUSED ? ep == NULL : ep != NULL); |
252b5132 | 3289 | |
5e0116d5 | 3290 | append_insn (place, &insn, ep, r); |
252b5132 RH |
3291 | } |
3292 | ||
438c16b8 TS |
3293 | /* |
3294 | * Generate a "jalr" instruction with a relocation hint to the called | |
3295 | * function. This occurs in NewABI PIC code. | |
3296 | */ | |
3297 | static void | |
3298 | macro_build_jalr (icnt, ep) | |
3299 | int icnt; | |
3300 | expressionS *ep; | |
3301 | { | |
f21f8242 | 3302 | char *f; |
b34976b6 | 3303 | |
438c16b8 | 3304 | if (HAVE_NEWABI) |
f21f8242 AO |
3305 | { |
3306 | frag_grow (4); | |
3307 | f = frag_more (0); | |
3308 | } | |
438c16b8 TS |
3309 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "jalr", "d,s", |
3310 | RA, PIC_CALL_REG); | |
3311 | if (HAVE_NEWABI) | |
f21f8242 | 3312 | fix_new_exp (frag_now, f - frag_now->fr_literal, |
b34976b6 | 3313 | 0, ep, FALSE, BFD_RELOC_MIPS_JALR); |
438c16b8 TS |
3314 | } |
3315 | ||
252b5132 RH |
3316 | /* |
3317 | * Generate a "lui" instruction. | |
3318 | */ | |
3319 | static void | |
3320 | macro_build_lui (place, counter, ep, regnum) | |
3321 | char *place; | |
3322 | int *counter; | |
3323 | expressionS *ep; | |
3324 | int regnum; | |
3325 | { | |
3326 | expressionS high_expr; | |
3327 | struct mips_cl_insn insn; | |
f6688943 TS |
3328 | bfd_reloc_code_real_type r[3] |
3329 | = {BFD_RELOC_UNUSED, BFD_RELOC_UNUSED, BFD_RELOC_UNUSED}; | |
5a38dc70 AM |
3330 | const char *name = "lui"; |
3331 | const char *fmt = "t,u"; | |
252b5132 RH |
3332 | |
3333 | assert (! mips_opts.mips16); | |
3334 | ||
3335 | if (place == NULL) | |
3336 | high_expr = *ep; | |
3337 | else | |
3338 | { | |
3339 | high_expr.X_op = O_constant; | |
3340 | high_expr.X_add_number = ep->X_add_number; | |
3341 | } | |
3342 | ||
3343 | if (high_expr.X_op == O_constant) | |
3344 | { | |
3345 | /* we can compute the instruction now without a relocation entry */ | |
e7d556df TS |
3346 | high_expr.X_add_number = ((high_expr.X_add_number + 0x8000) |
3347 | >> 16) & 0xffff; | |
f6688943 | 3348 | *r = BFD_RELOC_UNUSED; |
252b5132 | 3349 | } |
78e1bb40 | 3350 | else |
252b5132 RH |
3351 | { |
3352 | assert (ep->X_op == O_symbol); | |
3353 | /* _gp_disp is a special case, used from s_cpload. */ | |
3354 | assert (mips_pic == NO_PIC | |
78e1bb40 AO |
3355 | || (! HAVE_NEWABI |
3356 | && strcmp (S_GET_NAME (ep->X_add_symbol), "_gp_disp") == 0)); | |
f6688943 | 3357 | *r = BFD_RELOC_HI16_S; |
252b5132 RH |
3358 | } |
3359 | ||
3360 | /* | |
3361 | * If the macro is about to expand into a second instruction, | |
3362 | * print a warning if needed. We need to pass ip as a parameter | |
3363 | * to generate a better warning message here... | |
3364 | */ | |
3365 | if (mips_opts.warn_about_macros && place == NULL && *counter == 1) | |
3366 | as_warn (_("Macro instruction expanded into multiple instructions")); | |
3367 | ||
3368 | if (place == NULL) | |
f9419b05 | 3369 | ++*counter; /* bump instruction counter */ |
252b5132 RH |
3370 | |
3371 | insn.insn_mo = (struct mips_opcode *) hash_find (op_hash, name); | |
3372 | assert (insn.insn_mo); | |
3373 | assert (strcmp (name, insn.insn_mo->name) == 0); | |
3374 | assert (strcmp (fmt, insn.insn_mo->args) == 0); | |
3375 | ||
3376 | insn.insn_opcode = insn.insn_mo->match | (regnum << OP_SH_RT); | |
f6688943 | 3377 | if (*r == BFD_RELOC_UNUSED) |
252b5132 RH |
3378 | { |
3379 | insn.insn_opcode |= high_expr.X_add_number; | |
5e0116d5 | 3380 | append_insn (place, &insn, NULL, r); |
252b5132 RH |
3381 | } |
3382 | else | |
5e0116d5 | 3383 | append_insn (place, &insn, &high_expr, r); |
252b5132 RH |
3384 | } |
3385 | ||
885add95 CD |
3386 | /* Generate a sequence of instructions to do a load or store from a constant |
3387 | offset off of a base register (breg) into/from a target register (treg), | |
3388 | using AT if necessary. */ | |
3389 | static void | |
3390 | macro_build_ldst_constoffset (place, counter, ep, op, treg, breg) | |
3391 | char *place; | |
3392 | int *counter; | |
3393 | expressionS *ep; | |
3394 | const char *op; | |
3395 | int treg, breg; | |
3396 | { | |
3397 | assert (ep->X_op == O_constant); | |
3398 | ||
3399 | /* Right now, this routine can only handle signed 32-bit contants. */ | |
3400 | if (! IS_SEXT_32BIT_NUM(ep->X_add_number)) | |
3401 | as_warn (_("operand overflow")); | |
3402 | ||
3403 | if (IS_SEXT_16BIT_NUM(ep->X_add_number)) | |
3404 | { | |
3405 | /* Signed 16-bit offset will fit in the op. Easy! */ | |
3406 | macro_build (place, counter, ep, op, "t,o(b)", treg, | |
3407 | (int) BFD_RELOC_LO16, breg); | |
3408 | } | |
3409 | else | |
3410 | { | |
3411 | /* 32-bit offset, need multiple instructions and AT, like: | |
3412 | lui $tempreg,const_hi (BFD_RELOC_HI16_S) | |
3413 | addu $tempreg,$tempreg,$breg | |
3414 | <op> $treg,const_lo($tempreg) (BFD_RELOC_LO16) | |
3415 | to handle the complete offset. */ | |
3416 | macro_build_lui (place, counter, ep, AT); | |
3417 | if (place != NULL) | |
3418 | place += 4; | |
3419 | macro_build (place, counter, (expressionS *) NULL, | |
f5040a92 AO |
3420 | HAVE_32BIT_ADDRESSES ? HAVE_NEWABI |
3421 | ? "add" : "addu" : "daddu", | |
885add95 CD |
3422 | "d,v,t", AT, AT, breg); |
3423 | if (place != NULL) | |
3424 | place += 4; | |
3425 | macro_build (place, counter, ep, op, "t,o(b)", treg, | |
3426 | (int) BFD_RELOC_LO16, AT); | |
3427 | ||
3428 | if (mips_opts.noat) | |
3429 | as_warn (_("Macro used $at after \".set noat\"")); | |
3430 | } | |
3431 | } | |
3432 | ||
252b5132 RH |
3433 | /* set_at() |
3434 | * Generates code to set the $at register to true (one) | |
3435 | * if reg is less than the immediate expression. | |
3436 | */ | |
3437 | static void | |
3438 | set_at (counter, reg, unsignedp) | |
3439 | int *counter; | |
3440 | int reg; | |
3441 | int unsignedp; | |
3442 | { | |
3443 | if (imm_expr.X_op == O_constant | |
3444 | && imm_expr.X_add_number >= -0x8000 | |
3445 | && imm_expr.X_add_number < 0x8000) | |
3446 | macro_build ((char *) NULL, counter, &imm_expr, | |
3447 | unsignedp ? "sltiu" : "slti", | |
3448 | "t,r,j", AT, reg, (int) BFD_RELOC_LO16); | |
3449 | else | |
3450 | { | |
4d34fb5f | 3451 | load_register (counter, AT, &imm_expr, HAVE_64BIT_GPRS); |
2396cfb9 | 3452 | macro_build ((char *) NULL, counter, (expressionS *) NULL, |
252b5132 RH |
3453 | unsignedp ? "sltu" : "slt", |
3454 | "d,v,t", AT, reg, AT); | |
3455 | } | |
3456 | } | |
3457 | ||
3458 | /* Warn if an expression is not a constant. */ | |
3459 | ||
3460 | static void | |
3461 | check_absolute_expr (ip, ex) | |
3462 | struct mips_cl_insn *ip; | |
3463 | expressionS *ex; | |
3464 | { | |
3465 | if (ex->X_op == O_big) | |
3466 | as_bad (_("unsupported large constant")); | |
3467 | else if (ex->X_op != O_constant) | |
3468 | as_bad (_("Instruction %s requires absolute expression"), ip->insn_mo->name); | |
3469 | } | |
3470 | ||
3471 | /* Count the leading zeroes by performing a binary chop. This is a | |
3472 | bulky bit of source, but performance is a LOT better for the | |
3473 | majority of values than a simple loop to count the bits: | |
3474 | for (lcnt = 0; (lcnt < 32); lcnt++) | |
3475 | if ((v) & (1 << (31 - lcnt))) | |
3476 | break; | |
3477 | However it is not code size friendly, and the gain will drop a bit | |
3478 | on certain cached systems. | |
3479 | */ | |
3480 | #define COUNT_TOP_ZEROES(v) \ | |
3481 | (((v) & ~0xffff) == 0 \ | |
3482 | ? ((v) & ~0xff) == 0 \ | |
3483 | ? ((v) & ~0xf) == 0 \ | |
3484 | ? ((v) & ~0x3) == 0 \ | |
3485 | ? ((v) & ~0x1) == 0 \ | |
3486 | ? !(v) \ | |
3487 | ? 32 \ | |
3488 | : 31 \ | |
3489 | : 30 \ | |
3490 | : ((v) & ~0x7) == 0 \ | |
3491 | ? 29 \ | |
3492 | : 28 \ | |
3493 | : ((v) & ~0x3f) == 0 \ | |
3494 | ? ((v) & ~0x1f) == 0 \ | |
3495 | ? 27 \ | |
3496 | : 26 \ | |
3497 | : ((v) & ~0x7f) == 0 \ | |
3498 | ? 25 \ | |
3499 | : 24 \ | |
3500 | : ((v) & ~0xfff) == 0 \ | |
3501 | ? ((v) & ~0x3ff) == 0 \ | |
3502 | ? ((v) & ~0x1ff) == 0 \ | |
3503 | ? 23 \ | |
3504 | : 22 \ | |
3505 | : ((v) & ~0x7ff) == 0 \ | |
3506 | ? 21 \ | |
3507 | : 20 \ | |
3508 | : ((v) & ~0x3fff) == 0 \ | |
3509 | ? ((v) & ~0x1fff) == 0 \ | |
3510 | ? 19 \ | |
3511 | : 18 \ | |
3512 | : ((v) & ~0x7fff) == 0 \ | |
3513 | ? 17 \ | |
3514 | : 16 \ | |
3515 | : ((v) & ~0xffffff) == 0 \ | |
3516 | ? ((v) & ~0xfffff) == 0 \ | |
3517 | ? ((v) & ~0x3ffff) == 0 \ | |
3518 | ? ((v) & ~0x1ffff) == 0 \ | |
3519 | ? 15 \ | |
3520 | : 14 \ | |
3521 | : ((v) & ~0x7ffff) == 0 \ | |
3522 | ? 13 \ | |
3523 | : 12 \ | |
3524 | : ((v) & ~0x3fffff) == 0 \ | |
3525 | ? ((v) & ~0x1fffff) == 0 \ | |
3526 | ? 11 \ | |
3527 | : 10 \ | |
3528 | : ((v) & ~0x7fffff) == 0 \ | |
3529 | ? 9 \ | |
3530 | : 8 \ | |
3531 | : ((v) & ~0xfffffff) == 0 \ | |
3532 | ? ((v) & ~0x3ffffff) == 0 \ | |
3533 | ? ((v) & ~0x1ffffff) == 0 \ | |
3534 | ? 7 \ | |
3535 | : 6 \ | |
3536 | : ((v) & ~0x7ffffff) == 0 \ | |
3537 | ? 5 \ | |
3538 | : 4 \ | |
3539 | : ((v) & ~0x3fffffff) == 0 \ | |
3540 | ? ((v) & ~0x1fffffff) == 0 \ | |
3541 | ? 3 \ | |
3542 | : 2 \ | |
3543 | : ((v) & ~0x7fffffff) == 0 \ | |
3544 | ? 1 \ | |
3545 | : 0) | |
3546 | ||
3547 | /* load_register() | |
3548 | * This routine generates the least number of instructions neccessary to load | |
3549 | * an absolute expression value into a register. | |
3550 | */ | |
3551 | static void | |
3552 | load_register (counter, reg, ep, dbl) | |
3553 | int *counter; | |
3554 | int reg; | |
3555 | expressionS *ep; | |
3556 | int dbl; | |
3557 | { | |
3558 | int freg; | |
3559 | expressionS hi32, lo32; | |
3560 | ||
3561 | if (ep->X_op != O_big) | |
3562 | { | |
3563 | assert (ep->X_op == O_constant); | |
3564 | if (ep->X_add_number < 0x8000 | |
3565 | && (ep->X_add_number >= 0 | |
3566 | || (ep->X_add_number >= -0x8000 | |
3567 | && (! dbl | |
3568 | || ! ep->X_unsigned | |
3569 | || sizeof (ep->X_add_number) > 4)))) | |
3570 | { | |
3571 | /* We can handle 16 bit signed values with an addiu to | |
3572 | $zero. No need to ever use daddiu here, since $zero and | |
3573 | the result are always correct in 32 bit mode. */ | |
3574 | macro_build ((char *) NULL, counter, ep, "addiu", "t,r,j", reg, 0, | |
3575 | (int) BFD_RELOC_LO16); | |
3576 | return; | |
3577 | } | |
3578 | else if (ep->X_add_number >= 0 && ep->X_add_number < 0x10000) | |
3579 | { | |
3580 | /* We can handle 16 bit unsigned values with an ori to | |
3581 | $zero. */ | |
3582 | macro_build ((char *) NULL, counter, ep, "ori", "t,r,i", reg, 0, | |
3583 | (int) BFD_RELOC_LO16); | |
3584 | return; | |
3585 | } | |
6373ee54 | 3586 | else if ((IS_SEXT_32BIT_NUM (ep->X_add_number) |
252b5132 RH |
3587 | && (! dbl |
3588 | || ! ep->X_unsigned | |
3589 | || sizeof (ep->X_add_number) > 4 | |
3590 | || (ep->X_add_number & 0x80000000) == 0)) | |
ca4e0257 | 3591 | || ((HAVE_32BIT_GPRS || ! dbl) |
252b5132 | 3592 | && (ep->X_add_number &~ (offsetT) 0xffffffff) == 0) |
ca4e0257 | 3593 | || (HAVE_32BIT_GPRS |
252b5132 RH |
3594 | && ! dbl |
3595 | && ((ep->X_add_number &~ (offsetT) 0xffffffff) | |
3596 | == ~ (offsetT) 0xffffffff))) | |
3597 | { | |
3598 | /* 32 bit values require an lui. */ | |
3599 | macro_build ((char *) NULL, counter, ep, "lui", "t,u", reg, | |
3600 | (int) BFD_RELOC_HI16); | |
3601 | if ((ep->X_add_number & 0xffff) != 0) | |
3602 | macro_build ((char *) NULL, counter, ep, "ori", "t,r,i", reg, reg, | |
3603 | (int) BFD_RELOC_LO16); | |
3604 | return; | |
3605 | } | |
3606 | } | |
3607 | ||
3608 | /* The value is larger than 32 bits. */ | |
3609 | ||
ca4e0257 | 3610 | if (HAVE_32BIT_GPRS) |
252b5132 | 3611 | { |
956cd1d6 TS |
3612 | as_bad (_("Number (0x%lx) larger than 32 bits"), |
3613 | (unsigned long) ep->X_add_number); | |
252b5132 RH |
3614 | macro_build ((char *) NULL, counter, ep, "addiu", "t,r,j", reg, 0, |
3615 | (int) BFD_RELOC_LO16); | |
3616 | return; | |
3617 | } | |
3618 | ||
3619 | if (ep->X_op != O_big) | |
3620 | { | |
3621 | hi32 = *ep; | |
3622 | hi32.X_add_number = (valueT) hi32.X_add_number >> 16; | |
3623 | hi32.X_add_number = (valueT) hi32.X_add_number >> 16; | |
3624 | hi32.X_add_number &= 0xffffffff; | |
3625 | lo32 = *ep; | |
3626 | lo32.X_add_number &= 0xffffffff; | |
3627 | } | |
3628 | else | |
3629 | { | |
3630 | assert (ep->X_add_number > 2); | |
3631 | if (ep->X_add_number == 3) | |
3632 | generic_bignum[3] = 0; | |
3633 | else if (ep->X_add_number > 4) | |
3634 | as_bad (_("Number larger than 64 bits")); | |
3635 | lo32.X_op = O_constant; | |
3636 | lo32.X_add_number = generic_bignum[0] + (generic_bignum[1] << 16); | |
3637 | hi32.X_op = O_constant; | |
3638 | hi32.X_add_number = generic_bignum[2] + (generic_bignum[3] << 16); | |
3639 | } | |
3640 | ||
3641 | if (hi32.X_add_number == 0) | |
3642 | freg = 0; | |
3643 | else | |
3644 | { | |
3645 | int shift, bit; | |
3646 | unsigned long hi, lo; | |
3647 | ||
956cd1d6 | 3648 | if (hi32.X_add_number == (offsetT) 0xffffffff) |
beae10d5 KH |
3649 | { |
3650 | if ((lo32.X_add_number & 0xffff8000) == 0xffff8000) | |
3651 | { | |
3652 | macro_build ((char *) NULL, counter, &lo32, "addiu", "t,r,j", | |
252b5132 | 3653 | reg, 0, (int) BFD_RELOC_LO16); |
beae10d5 KH |
3654 | return; |
3655 | } | |
3656 | if (lo32.X_add_number & 0x80000000) | |
3657 | { | |
3658 | macro_build ((char *) NULL, counter, &lo32, "lui", "t,u", reg, | |
3659 | (int) BFD_RELOC_HI16); | |
252b5132 RH |
3660 | if (lo32.X_add_number & 0xffff) |
3661 | macro_build ((char *) NULL, counter, &lo32, "ori", "t,r,i", | |
3662 | reg, reg, (int) BFD_RELOC_LO16); | |
beae10d5 KH |
3663 | return; |
3664 | } | |
3665 | } | |
252b5132 RH |
3666 | |
3667 | /* Check for 16bit shifted constant. We know that hi32 is | |
3668 | non-zero, so start the mask on the first bit of the hi32 | |
3669 | value. */ | |
3670 | shift = 17; | |
3671 | do | |
beae10d5 KH |
3672 | { |
3673 | unsigned long himask, lomask; | |
3674 | ||
3675 | if (shift < 32) | |
3676 | { | |
3677 | himask = 0xffff >> (32 - shift); | |
3678 | lomask = (0xffff << shift) & 0xffffffff; | |
3679 | } | |
3680 | else | |
3681 | { | |
3682 | himask = 0xffff << (shift - 32); | |
3683 | lomask = 0; | |
3684 | } | |
3685 | if ((hi32.X_add_number & ~(offsetT) himask) == 0 | |
3686 | && (lo32.X_add_number & ~(offsetT) lomask) == 0) | |
3687 | { | |
3688 | expressionS tmp; | |
3689 | ||
3690 | tmp.X_op = O_constant; | |
3691 | if (shift < 32) | |
3692 | tmp.X_add_number = ((hi32.X_add_number << (32 - shift)) | |
3693 | | (lo32.X_add_number >> shift)); | |
3694 | else | |
3695 | tmp.X_add_number = hi32.X_add_number >> (shift - 32); | |
3696 | macro_build ((char *) NULL, counter, &tmp, | |
3697 | "ori", "t,r,i", reg, 0, | |
3698 | (int) BFD_RELOC_LO16); | |
2396cfb9 | 3699 | macro_build ((char *) NULL, counter, (expressionS *) NULL, |
beae10d5 KH |
3700 | (shift >= 32) ? "dsll32" : "dsll", |
3701 | "d,w,<", reg, reg, | |
3702 | (shift >= 32) ? shift - 32 : shift); | |
3703 | return; | |
3704 | } | |
f9419b05 | 3705 | ++shift; |
beae10d5 KH |
3706 | } |
3707 | while (shift <= (64 - 16)); | |
252b5132 RH |
3708 | |
3709 | /* Find the bit number of the lowest one bit, and store the | |
3710 | shifted value in hi/lo. */ | |
3711 | hi = (unsigned long) (hi32.X_add_number & 0xffffffff); | |
3712 | lo = (unsigned long) (lo32.X_add_number & 0xffffffff); | |
3713 | if (lo != 0) | |
3714 | { | |
3715 | bit = 0; | |
3716 | while ((lo & 1) == 0) | |
3717 | { | |
3718 | lo >>= 1; | |
3719 | ++bit; | |
3720 | } | |
3721 | lo |= (hi & (((unsigned long) 1 << bit) - 1)) << (32 - bit); | |
3722 | hi >>= bit; | |
3723 | } | |
3724 | else | |
3725 | { | |
3726 | bit = 32; | |
3727 | while ((hi & 1) == 0) | |
3728 | { | |
3729 | hi >>= 1; | |
3730 | ++bit; | |
3731 | } | |
3732 | lo = hi; | |
3733 | hi = 0; | |
3734 | } | |
3735 | ||
3736 | /* Optimize if the shifted value is a (power of 2) - 1. */ | |
3737 | if ((hi == 0 && ((lo + 1) & lo) == 0) | |
3738 | || (lo == 0xffffffff && ((hi + 1) & hi) == 0)) | |
beae10d5 KH |
3739 | { |
3740 | shift = COUNT_TOP_ZEROES ((unsigned int) hi32.X_add_number); | |
252b5132 | 3741 | if (shift != 0) |
beae10d5 | 3742 | { |
252b5132 RH |
3743 | expressionS tmp; |
3744 | ||
3745 | /* This instruction will set the register to be all | |
3746 | ones. */ | |
beae10d5 KH |
3747 | tmp.X_op = O_constant; |
3748 | tmp.X_add_number = (offsetT) -1; | |
3749 | macro_build ((char *) NULL, counter, &tmp, "addiu", "t,r,j", | |
252b5132 | 3750 | reg, 0, (int) BFD_RELOC_LO16); |
beae10d5 KH |
3751 | if (bit != 0) |
3752 | { | |
3753 | bit += shift; | |
2396cfb9 | 3754 | macro_build ((char *) NULL, counter, (expressionS *) NULL, |
beae10d5 KH |
3755 | (bit >= 32) ? "dsll32" : "dsll", |
3756 | "d,w,<", reg, reg, | |
3757 | (bit >= 32) ? bit - 32 : bit); | |
3758 | } | |
2396cfb9 | 3759 | macro_build ((char *) NULL, counter, (expressionS *) NULL, |
252b5132 | 3760 | (shift >= 32) ? "dsrl32" : "dsrl", |
beae10d5 | 3761 | "d,w,<", reg, reg, |
252b5132 | 3762 | (shift >= 32) ? shift - 32 : shift); |
beae10d5 KH |
3763 | return; |
3764 | } | |
3765 | } | |
252b5132 RH |
3766 | |
3767 | /* Sign extend hi32 before calling load_register, because we can | |
3768 | generally get better code when we load a sign extended value. */ | |
3769 | if ((hi32.X_add_number & 0x80000000) != 0) | |
beae10d5 | 3770 | hi32.X_add_number |= ~(offsetT) 0xffffffff; |
252b5132 RH |
3771 | load_register (counter, reg, &hi32, 0); |
3772 | freg = reg; | |
3773 | } | |
3774 | if ((lo32.X_add_number & 0xffff0000) == 0) | |
3775 | { | |
3776 | if (freg != 0) | |
3777 | { | |
2396cfb9 TS |
3778 | macro_build ((char *) NULL, counter, (expressionS *) NULL, |
3779 | "dsll32", "d,w,<", reg, freg, 0); | |
252b5132 RH |
3780 | freg = reg; |
3781 | } | |
3782 | } | |
3783 | else | |
3784 | { | |
3785 | expressionS mid16; | |
3786 | ||
956cd1d6 | 3787 | if ((freg == 0) && (lo32.X_add_number == (offsetT) 0xffffffff)) |
beae10d5 | 3788 | { |
252b5132 RH |
3789 | macro_build ((char *) NULL, counter, &lo32, "lui", "t,u", reg, |
3790 | (int) BFD_RELOC_HI16); | |
956cd1d6 TS |
3791 | macro_build ((char *) NULL, counter, (expressionS *) NULL, |
3792 | "dsrl32", "d,w,<", reg, reg, 0); | |
beae10d5 KH |
3793 | return; |
3794 | } | |
252b5132 RH |
3795 | |
3796 | if (freg != 0) | |
3797 | { | |
956cd1d6 TS |
3798 | macro_build ((char *) NULL, counter, (expressionS *) NULL, "dsll", |
3799 | "d,w,<", reg, freg, 16); | |
252b5132 RH |
3800 | freg = reg; |
3801 | } | |
3802 | mid16 = lo32; | |
3803 | mid16.X_add_number >>= 16; | |
3804 | macro_build ((char *) NULL, counter, &mid16, "ori", "t,r,i", reg, | |
3805 | freg, (int) BFD_RELOC_LO16); | |
956cd1d6 TS |
3806 | macro_build ((char *) NULL, counter, (expressionS *) NULL, "dsll", |
3807 | "d,w,<", reg, reg, 16); | |
252b5132 RH |
3808 | freg = reg; |
3809 | } | |
3810 | if ((lo32.X_add_number & 0xffff) != 0) | |
3811 | macro_build ((char *) NULL, counter, &lo32, "ori", "t,r,i", reg, freg, | |
3812 | (int) BFD_RELOC_LO16); | |
3813 | } | |
3814 | ||
3815 | /* Load an address into a register. */ | |
3816 | ||
3817 | static void | |
c9914766 | 3818 | load_address (counter, reg, ep, used_at) |
252b5132 RH |
3819 | int *counter; |
3820 | int reg; | |
3821 | expressionS *ep; | |
d6bc6245 | 3822 | int *used_at; |
252b5132 | 3823 | { |
f9419b05 | 3824 | char *p = NULL; |
252b5132 RH |
3825 | |
3826 | if (ep->X_op != O_constant | |
3827 | && ep->X_op != O_symbol) | |
3828 | { | |
3829 | as_bad (_("expression too complex")); | |
3830 | ep->X_op = O_constant; | |
3831 | } | |
3832 | ||
3833 | if (ep->X_op == O_constant) | |
3834 | { | |
c9914766 | 3835 | load_register (counter, reg, ep, HAVE_64BIT_ADDRESSES); |
252b5132 RH |
3836 | return; |
3837 | } | |
3838 | ||
3839 | if (mips_pic == NO_PIC) | |
3840 | { | |
3841 | /* If this is a reference to a GP relative symbol, we want | |
cdf6fd85 | 3842 | addiu $reg,$gp,<sym> (BFD_RELOC_GPREL16) |
252b5132 RH |
3843 | Otherwise we want |
3844 | lui $reg,<sym> (BFD_RELOC_HI16_S) | |
3845 | addiu $reg,$reg,<sym> (BFD_RELOC_LO16) | |
d6bc6245 | 3846 | If we have an addend, we always use the latter form. |
76b3015f | 3847 | |
d6bc6245 TS |
3848 | With 64bit address space and a usable $at we want |
3849 | lui $reg,<sym> (BFD_RELOC_MIPS_HIGHEST) | |
3850 | lui $at,<sym> (BFD_RELOC_HI16_S) | |
3851 | daddiu $reg,<sym> (BFD_RELOC_MIPS_HIGHER) | |
3852 | daddiu $at,<sym> (BFD_RELOC_LO16) | |
3853 | dsll32 $reg,0 | |
3a482fd5 | 3854 | daddu $reg,$reg,$at |
76b3015f | 3855 | |
c03099e6 | 3856 | If $at is already in use, we use a path which is suboptimal |
d6bc6245 TS |
3857 | on superscalar processors. |
3858 | lui $reg,<sym> (BFD_RELOC_MIPS_HIGHEST) | |
3859 | daddiu $reg,<sym> (BFD_RELOC_MIPS_HIGHER) | |
3860 | dsll $reg,16 | |
3861 | daddiu $reg,<sym> (BFD_RELOC_HI16_S) | |
3862 | dsll $reg,16 | |
3863 | daddiu $reg,<sym> (BFD_RELOC_LO16) | |
3864 | */ | |
c9914766 | 3865 | if (HAVE_64BIT_ADDRESSES) |
d6bc6245 | 3866 | { |
d6bc6245 TS |
3867 | /* We don't do GP optimization for now because RELAX_ENCODE can't |
3868 | hold the data for such large chunks. */ | |
3869 | ||
460597ba | 3870 | if (*used_at == 0 && ! mips_opts.noat) |
d6bc6245 TS |
3871 | { |
3872 | macro_build (p, counter, ep, "lui", "t,u", | |
3873 | reg, (int) BFD_RELOC_MIPS_HIGHEST); | |
3874 | macro_build (p, counter, ep, "lui", "t,u", | |
3875 | AT, (int) BFD_RELOC_HI16_S); | |
3876 | macro_build (p, counter, ep, "daddiu", "t,r,j", | |
3877 | reg, reg, (int) BFD_RELOC_MIPS_HIGHER); | |
3878 | macro_build (p, counter, ep, "daddiu", "t,r,j", | |
3879 | AT, AT, (int) BFD_RELOC_LO16); | |
2396cfb9 TS |
3880 | macro_build (p, counter, (expressionS *) NULL, "dsll32", |
3881 | "d,w,<", reg, reg, 0); | |
3a482fd5 | 3882 | macro_build (p, counter, (expressionS *) NULL, "daddu", |
2396cfb9 | 3883 | "d,v,t", reg, reg, AT); |
d6bc6245 TS |
3884 | *used_at = 1; |
3885 | } | |
3886 | else | |
3887 | { | |
3888 | macro_build (p, counter, ep, "lui", "t,u", | |
3889 | reg, (int) BFD_RELOC_MIPS_HIGHEST); | |
3890 | macro_build (p, counter, ep, "daddiu", "t,r,j", | |
3891 | reg, reg, (int) BFD_RELOC_MIPS_HIGHER); | |
2396cfb9 TS |
3892 | macro_build (p, counter, (expressionS *) NULL, "dsll", |
3893 | "d,w,<", reg, reg, 16); | |
d6bc6245 TS |
3894 | macro_build (p, counter, ep, "daddiu", "t,r,j", |
3895 | reg, reg, (int) BFD_RELOC_HI16_S); | |
2396cfb9 TS |
3896 | macro_build (p, counter, (expressionS *) NULL, "dsll", |
3897 | "d,w,<", reg, reg, 16); | |
d6bc6245 TS |
3898 | macro_build (p, counter, ep, "daddiu", "t,r,j", |
3899 | reg, reg, (int) BFD_RELOC_LO16); | |
3900 | } | |
3901 | } | |
252b5132 RH |
3902 | else |
3903 | { | |
d6bc6245 TS |
3904 | if ((valueT) ep->X_add_number <= MAX_GPREL_OFFSET |
3905 | && ! nopic_need_relax (ep->X_add_symbol, 1)) | |
3906 | { | |
3907 | frag_grow (20); | |
3908 | macro_build ((char *) NULL, counter, ep, | |
f5040a92 AO |
3909 | HAVE_32BIT_ADDRESSES ? HAVE_NEWABI |
3910 | ? "addi" : "addiu" : "daddiu", "t,r,j", | |
c9914766 | 3911 | reg, mips_gp_register, (int) BFD_RELOC_GPREL16); |
d6bc6245 TS |
3912 | p = frag_var (rs_machine_dependent, 8, 0, |
3913 | RELAX_ENCODE (4, 8, 0, 4, 0, | |
3914 | mips_opts.warn_about_macros), | |
956cd1d6 | 3915 | ep->X_add_symbol, 0, NULL); |
d6bc6245 TS |
3916 | } |
3917 | macro_build_lui (p, counter, ep, reg); | |
3918 | if (p != NULL) | |
3919 | p += 4; | |
c9914766 | 3920 | macro_build (p, counter, ep, |
f5040a92 AO |
3921 | HAVE_32BIT_ADDRESSES ? HAVE_NEWABI |
3922 | ? "addi" : "addiu" : "daddiu", | |
d6bc6245 TS |
3923 | "t,r,j", reg, reg, (int) BFD_RELOC_LO16); |
3924 | } | |
252b5132 RH |
3925 | } |
3926 | else if (mips_pic == SVR4_PIC && ! mips_big_got) | |
3927 | { | |
3928 | expressionS ex; | |
3929 | ||
3930 | /* If this is a reference to an external symbol, we want | |
3931 | lw $reg,<sym>($gp) (BFD_RELOC_MIPS_GOT16) | |
3932 | Otherwise we want | |
3933 | lw $reg,<sym>($gp) (BFD_RELOC_MIPS_GOT16) | |
3934 | nop | |
3935 | addiu $reg,$reg,<sym> (BFD_RELOC_LO16) | |
f5040a92 AO |
3936 | If there is a constant, it must be added in after. |
3937 | ||
ed6fb7bd | 3938 | If we have NewABI, we want |
f5040a92 AO |
3939 | lw $reg,<sym+cst>($gp) (BFD_RELOC_MIPS_GOT_DISP) |
3940 | unless we're referencing a global symbol with a non-zero | |
3941 | offset, in which case cst must be added separately. */ | |
ed6fb7bd SC |
3942 | if (HAVE_NEWABI) |
3943 | { | |
f5040a92 | 3944 | frag_grow (12); |
684022ea | 3945 | |
f5040a92 AO |
3946 | if (ep->X_add_number) |
3947 | { | |
3948 | frag_now->tc_frag_data.tc_fr_offset = | |
3949 | ex.X_add_number = ep->X_add_number; | |
3950 | ep->X_add_number = 0; | |
3951 | macro_build ((char *) NULL, counter, ep, | |
3952 | HAVE_32BIT_ADDRESSES ? "lw" : "ld", "t,o(b)", reg, | |
3953 | (int) BFD_RELOC_MIPS_GOT_DISP, mips_gp_register); | |
3954 | if (ex.X_add_number < -0x8000 || ex.X_add_number >= 0x8000) | |
3955 | as_bad (_("PIC code offset overflow (max 16 signed bits)")); | |
3956 | ex.X_op = O_constant; | |
3957 | macro_build ((char *) NULL, counter, &ex, | |
3958 | HAVE_32BIT_ADDRESSES ? "addi" : "daddiu", | |
3959 | "t,r,j", reg, reg, (int) BFD_RELOC_LO16); | |
3960 | p = frag_var (rs_machine_dependent, 8, 0, | |
3961 | RELAX_ENCODE (8, 4, 0, 0, 0, | |
3962 | mips_opts.warn_about_macros), | |
3963 | ep->X_add_symbol, 0, (char *) NULL); | |
3964 | ep->X_add_number = ex.X_add_number; | |
3965 | } | |
3966 | ||
3967 | macro_build (p, counter, ep, | |
ed6fb7bd SC |
3968 | HAVE_32BIT_ADDRESSES ? "lw" : "ld", "t,o(b)", reg, |
3969 | (int) BFD_RELOC_MIPS_GOT_DISP, mips_gp_register); | |
f5040a92 AO |
3970 | |
3971 | if (! p) | |
3972 | { | |
3973 | /* To avoid confusion in tc_gen_reloc, we must ensure | |
3974 | that this does not become a variant frag. */ | |
3975 | frag_wane (frag_now); | |
3976 | frag_new (0); | |
3977 | } | |
ed6fb7bd SC |
3978 | } |
3979 | else | |
3980 | { | |
f5040a92 AO |
3981 | ex.X_add_number = ep->X_add_number; |
3982 | ep->X_add_number = 0; | |
3983 | frag_grow (20); | |
ed6fb7bd SC |
3984 | macro_build ((char *) NULL, counter, ep, |
3985 | HAVE_32BIT_ADDRESSES ? "lw" : "ld", "t,o(b)", | |
3986 | reg, (int) BFD_RELOC_MIPS_GOT16, mips_gp_register); | |
3987 | macro_build ((char *) NULL, counter, (expressionS *) NULL, "nop", ""); | |
3988 | p = frag_var (rs_machine_dependent, 4, 0, | |
3989 | RELAX_ENCODE (0, 4, -8, 0, 0, mips_opts.warn_about_macros), | |
3990 | ep->X_add_symbol, (offsetT) 0, (char *) NULL); | |
3991 | macro_build (p, counter, ep, | |
3992 | HAVE_32BIT_ADDRESSES ? "addiu" : "daddiu", | |
3993 | "t,r,j", reg, reg, (int) BFD_RELOC_LO16); | |
ed6fb7bd | 3994 | |
f5040a92 AO |
3995 | if (ex.X_add_number != 0) |
3996 | { | |
3997 | if (ex.X_add_number < -0x8000 || ex.X_add_number >= 0x8000) | |
3998 | as_bad (_("PIC code offset overflow (max 16 signed bits)")); | |
3999 | ex.X_op = O_constant; | |
4000 | macro_build ((char *) NULL, counter, &ex, | |
4001 | HAVE_32BIT_ADDRESSES ? "addiu" : "daddiu", | |
4002 | "t,r,j", reg, reg, (int) BFD_RELOC_LO16); | |
4003 | } | |
252b5132 RH |
4004 | } |
4005 | } | |
4006 | else if (mips_pic == SVR4_PIC) | |
4007 | { | |
4008 | expressionS ex; | |
4009 | int off; | |
4010 | ||
4011 | /* This is the large GOT case. If this is a reference to an | |
4012 | external symbol, we want | |
4013 | lui $reg,<sym> (BFD_RELOC_MIPS_GOT_HI16) | |
4014 | addu $reg,$reg,$gp | |
4015 | lw $reg,<sym>($reg) (BFD_RELOC_MIPS_GOT_LO16) | |
f5040a92 AO |
4016 | |
4017 | Otherwise, for a reference to a local symbol in old ABI, we want | |
252b5132 RH |
4018 | lw $reg,<sym>($gp) (BFD_RELOC_MIPS_GOT16) |
4019 | nop | |
4020 | addiu $reg,$reg,<sym> (BFD_RELOC_LO16) | |
684022ea | 4021 | If there is a constant, it must be added in after. |
f5040a92 AO |
4022 | |
4023 | In the NewABI, for local symbols, with or without offsets, we want: | |
438c16b8 TS |
4024 | lw $reg,<sym>($gp) (BFD_RELOC_MIPS_GOT_PAGE) |
4025 | addiu $reg,$reg,<sym> (BFD_RELOC_MIPS_GOT_OFST) | |
f5040a92 | 4026 | */ |
438c16b8 TS |
4027 | if (HAVE_NEWABI) |
4028 | { | |
f5040a92 AO |
4029 | frag_grow (24); |
4030 | ||
4031 | frag_now->tc_frag_data.tc_fr_offset = | |
4032 | ex.X_add_number = ep->X_add_number; | |
4033 | ep->X_add_number = 0; | |
4034 | macro_build ((char *) NULL, counter, ep, "lui", "t,u", reg, | |
4035 | (int) BFD_RELOC_MIPS_GOT_HI16); | |
4036 | macro_build ((char *) NULL, counter, (expressionS *) NULL, | |
4037 | HAVE_32BIT_ADDRESSES ? "add" : "daddu", "d,v,t", reg, | |
4038 | reg, mips_gp_register); | |
438c16b8 | 4039 | macro_build ((char *) NULL, counter, ep, |
f5040a92 AO |
4040 | HAVE_32BIT_ADDRESSES ? "lw" : "ld", |
4041 | "t,o(b)", reg, (int) BFD_RELOC_MIPS_GOT_LO16, reg); | |
4042 | if (ex.X_add_number < -0x8000 || ex.X_add_number >= 0x8000) | |
4043 | as_bad (_("PIC code offset overflow (max 16 signed bits)")); | |
4044 | else if (ex.X_add_number) | |
4045 | { | |
4046 | ex.X_op = O_constant; | |
4047 | macro_build ((char *) NULL, counter, &ex, | |
4048 | HAVE_32BIT_ADDRESSES ? "addi" : "daddiu", | |
4049 | "t,r,j", reg, reg, (int) BFD_RELOC_LO16); | |
4050 | } | |
4051 | ||
4052 | ep->X_add_number = ex.X_add_number; | |
4053 | p = frag_var (rs_machine_dependent, 8, 0, | |
4054 | RELAX_ENCODE (ex.X_add_number ? 16 : 12, 8, 0, 4, 0, | |
4055 | mips_opts.warn_about_macros), | |
4056 | ep->X_add_symbol, 0, (char *) NULL); | |
4057 | macro_build (p, counter, ep, | |
438c16b8 TS |
4058 | HAVE_32BIT_ADDRESSES ? "lw" : "ld", "t,o(b)", reg, |
4059 | (int) BFD_RELOC_MIPS_GOT_PAGE, mips_gp_register); | |
f5040a92 AO |
4060 | macro_build (p + 4, counter, ep, |
4061 | HAVE_32BIT_ADDRESSES ? "addi" : "daddiu", "t,r,j", | |
438c16b8 TS |
4062 | reg, reg, (int) BFD_RELOC_MIPS_GOT_OFST); |
4063 | } | |
252b5132 | 4064 | else |
438c16b8 | 4065 | { |
f5040a92 AO |
4066 | ex.X_add_number = ep->X_add_number; |
4067 | ep->X_add_number = 0; | |
438c16b8 TS |
4068 | if (reg_needs_delay (mips_gp_register)) |
4069 | off = 4; | |
4070 | else | |
4071 | off = 0; | |
4072 | frag_grow (32); | |
4073 | macro_build ((char *) NULL, counter, ep, "lui", "t,u", reg, | |
4074 | (int) BFD_RELOC_MIPS_GOT_HI16); | |
4075 | macro_build ((char *) NULL, counter, (expressionS *) NULL, | |
4076 | HAVE_32BIT_ADDRESSES ? "addu" : "daddu", "d,v,t", reg, | |
4077 | reg, mips_gp_register); | |
4078 | macro_build ((char *) NULL, counter, ep, | |
4079 | HAVE_32BIT_ADDRESSES ? "lw" : "ld", | |
4080 | "t,o(b)", reg, (int) BFD_RELOC_MIPS_GOT_LO16, reg); | |
4081 | p = frag_var (rs_machine_dependent, 12 + off, 0, | |
4082 | RELAX_ENCODE (12, 12 + off, off, 8 + off, 0, | |
4083 | mips_opts.warn_about_macros), | |
4084 | ep->X_add_symbol, 0, NULL); | |
4085 | if (off > 0) | |
4086 | { | |
4087 | /* We need a nop before loading from $gp. This special | |
4088 | check is required because the lui which starts the main | |
4089 | instruction stream does not refer to $gp, and so will not | |
4090 | insert the nop which may be required. */ | |
4091 | macro_build (p, counter, (expressionS *) NULL, "nop", ""); | |
4092 | p += 4; | |
4093 | } | |
4094 | macro_build (p, counter, ep, | |
4095 | HAVE_32BIT_ADDRESSES ? "lw" : "ld", "t,o(b)", reg, | |
4096 | (int) BFD_RELOC_MIPS_GOT16, mips_gp_register); | |
4097 | p += 4; | |
252b5132 RH |
4098 | macro_build (p, counter, (expressionS *) NULL, "nop", ""); |
4099 | p += 4; | |
438c16b8 TS |
4100 | macro_build (p, counter, ep, |
4101 | HAVE_32BIT_ADDRESSES ? "addiu" : "daddiu", | |
4102 | "t,r,j", reg, reg, (int) BFD_RELOC_LO16); | |
438c16b8 | 4103 | |
f5040a92 AO |
4104 | if (ex.X_add_number != 0) |
4105 | { | |
4106 | if (ex.X_add_number < -0x8000 || ex.X_add_number >= 0x8000) | |
4107 | as_bad (_("PIC code offset overflow (max 16 signed bits)")); | |
4108 | ex.X_op = O_constant; | |
4109 | macro_build ((char *) NULL, counter, &ex, | |
4110 | HAVE_32BIT_ADDRESSES ? "addiu" : "daddiu", | |
4111 | "t,r,j", reg, reg, (int) BFD_RELOC_LO16); | |
4112 | } | |
252b5132 RH |
4113 | } |
4114 | } | |
4115 | else if (mips_pic == EMBEDDED_PIC) | |
4116 | { | |
4117 | /* We always do | |
cdf6fd85 | 4118 | addiu $reg,$gp,<sym> (BFD_RELOC_GPREL16) |
c9914766 TS |
4119 | */ |
4120 | macro_build ((char *) NULL, counter, ep, | |
4121 | HAVE_32BIT_ADDRESSES ? "addiu" : "daddiu", | |
4122 | "t,r,j", reg, mips_gp_register, (int) BFD_RELOC_GPREL16); | |
252b5132 RH |
4123 | } |
4124 | else | |
4125 | abort (); | |
4126 | } | |
4127 | ||
ea1fb5dc RS |
4128 | /* Move the contents of register SOURCE into register DEST. */ |
4129 | ||
4130 | static void | |
4131 | move_register (counter, dest, source) | |
4132 | int *counter; | |
4133 | int dest; | |
4134 | int source; | |
4135 | { | |
4136 | macro_build ((char *) NULL, counter, (expressionS *) NULL, | |
4137 | HAVE_32BIT_GPRS ? "addu" : "daddu", | |
4138 | "d,v,t", dest, source, 0); | |
4139 | } | |
4140 | ||
252b5132 RH |
4141 | /* |
4142 | * Build macros | |
4143 | * This routine implements the seemingly endless macro or synthesized | |
4144 | * instructions and addressing modes in the mips assembly language. Many | |
4145 | * of these macros are simple and are similar to each other. These could | |
4146 | * probably be handled by some kind of table or grammer aproach instead of | |
4147 | * this verbose method. Others are not simple macros but are more like | |
4148 | * optimizing code generation. | |
4149 | * One interesting optimization is when several store macros appear | |
4150 | * consecutivly that would load AT with the upper half of the same address. | |
4151 | * The ensuing load upper instructions are ommited. This implies some kind | |
4152 | * of global optimization. We currently only optimize within a single macro. | |
4153 | * For many of the load and store macros if the address is specified as a | |
4154 | * constant expression in the first 64k of memory (ie ld $2,0x4000c) we | |
4155 | * first load register 'at' with zero and use it as the base register. The | |
4156 | * mips assembler simply uses register $zero. Just one tiny optimization | |
4157 | * we're missing. | |
4158 | */ | |
4159 | static void | |
4160 | macro (ip) | |
4161 | struct mips_cl_insn *ip; | |
4162 | { | |
4163 | register int treg, sreg, dreg, breg; | |
4164 | int tempreg; | |
4165 | int mask; | |
4166 | int icnt = 0; | |
43841e91 | 4167 | int used_at = 0; |
252b5132 RH |
4168 | expressionS expr1; |
4169 | const char *s; | |
4170 | const char *s2; | |
4171 | const char *fmt; | |
4172 | int likely = 0; | |
4173 | int dbl = 0; | |
4174 | int coproc = 0; | |
4175 | int lr = 0; | |
4176 | int imm = 0; | |
4177 | offsetT maxnum; | |
4178 | int off; | |
4179 | bfd_reloc_code_real_type r; | |
252b5132 RH |
4180 | int hold_mips_optimize; |
4181 | ||
4182 | assert (! mips_opts.mips16); | |
4183 | ||
4184 | treg = (ip->insn_opcode >> 16) & 0x1f; | |
4185 | dreg = (ip->insn_opcode >> 11) & 0x1f; | |
4186 | sreg = breg = (ip->insn_opcode >> 21) & 0x1f; | |
4187 | mask = ip->insn_mo->mask; | |
4188 | ||
4189 | expr1.X_op = O_constant; | |
4190 | expr1.X_op_symbol = NULL; | |
4191 | expr1.X_add_symbol = NULL; | |
4192 | expr1.X_add_number = 1; | |
4193 | ||
5919d012 RS |
4194 | /* Umatched fixups should not be put in the same frag as a relaxable |
4195 | macro. For example, suppose we have: | |
4196 | ||
4197 | lui $4,%hi(l1) # 1 | |
4198 | la $5,l2 # 2 | |
4199 | addiu $4,$4,%lo(l1) # 3 | |
4200 | ||
4201 | If instructions 1 and 2 were put in the same frag, md_frob_file would | |
4202 | move the fixup for #1 after the fixups for the "unrelaxed" version of | |
4203 | #2. This would confuse tc_gen_reloc, which expects the relocations | |
4204 | for #2 to be the last for that frag. | |
4205 | ||
64bdfcaf RS |
4206 | Also, if tc_gen_reloc sees certain relocations in a variant frag, |
4207 | it assumes that they belong to a relaxable macro. We mustn't put | |
4208 | other uses of such relocations into a variant frag. | |
4209 | ||
4210 | To avoid both problems, finish the current frag it contains a | |
4211 | %reloc() operator. The macro then goes into a new frag. */ | |
4212 | if (prev_reloc_op_frag == frag_now) | |
5919d012 RS |
4213 | { |
4214 | frag_wane (frag_now); | |
4215 | frag_new (0); | |
4216 | } | |
4217 | ||
252b5132 RH |
4218 | switch (mask) |
4219 | { | |
4220 | case M_DABS: | |
4221 | dbl = 1; | |
4222 | case M_ABS: | |
4223 | /* bgez $a0,.+12 | |
4224 | move v0,$a0 | |
4225 | sub v0,$zero,$a0 | |
4226 | */ | |
4227 | ||
b34976b6 | 4228 | mips_emit_delays (TRUE); |
252b5132 RH |
4229 | ++mips_opts.noreorder; |
4230 | mips_any_noreorder = 1; | |
4231 | ||
4232 | expr1.X_add_number = 8; | |
4233 | macro_build ((char *) NULL, &icnt, &expr1, "bgez", "s,p", sreg); | |
4234 | if (dreg == sreg) | |
2396cfb9 TS |
4235 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "nop", "", |
4236 | 0); | |
252b5132 | 4237 | else |
ea1fb5dc | 4238 | move_register (&icnt, dreg, sreg); |
2396cfb9 | 4239 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, |
9a41af64 | 4240 | dbl ? "dsub" : "sub", "d,v,t", dreg, 0, sreg); |
252b5132 RH |
4241 | |
4242 | --mips_opts.noreorder; | |
4243 | return; | |
4244 | ||
4245 | case M_ADD_I: | |
4246 | s = "addi"; | |
4247 | s2 = "add"; | |
4248 | goto do_addi; | |
4249 | case M_ADDU_I: | |
4250 | s = "addiu"; | |
4251 | s2 = "addu"; | |
4252 | goto do_addi; | |
4253 | case M_DADD_I: | |
4254 | dbl = 1; | |
4255 | s = "daddi"; | |
4256 | s2 = "dadd"; | |
4257 | goto do_addi; | |
4258 | case M_DADDU_I: | |
4259 | dbl = 1; | |
4260 | s = "daddiu"; | |
4261 | s2 = "daddu"; | |
4262 | do_addi: | |
4263 | if (imm_expr.X_op == O_constant | |
4264 | && imm_expr.X_add_number >= -0x8000 | |
4265 | && imm_expr.X_add_number < 0x8000) | |
4266 | { | |
4267 | macro_build ((char *) NULL, &icnt, &imm_expr, s, "t,r,j", treg, sreg, | |
4268 | (int) BFD_RELOC_LO16); | |
4269 | return; | |
4270 | } | |
4271 | load_register (&icnt, AT, &imm_expr, dbl); | |
2396cfb9 TS |
4272 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, s2, "d,v,t", |
4273 | treg, sreg, AT); | |
252b5132 RH |
4274 | break; |
4275 | ||
4276 | case M_AND_I: | |
4277 | s = "andi"; | |
4278 | s2 = "and"; | |
4279 | goto do_bit; | |
4280 | case M_OR_I: | |
4281 | s = "ori"; | |
4282 | s2 = "or"; | |
4283 | goto do_bit; | |
4284 | case M_NOR_I: | |
4285 | s = ""; | |
4286 | s2 = "nor"; | |
4287 | goto do_bit; | |
4288 | case M_XOR_I: | |
4289 | s = "xori"; | |
4290 | s2 = "xor"; | |
4291 | do_bit: | |
4292 | if (imm_expr.X_op == O_constant | |
4293 | && imm_expr.X_add_number >= 0 | |
4294 | && imm_expr.X_add_number < 0x10000) | |
4295 | { | |
4296 | if (mask != M_NOR_I) | |
4297 | macro_build ((char *) NULL, &icnt, &imm_expr, s, "t,r,i", treg, | |
4298 | sreg, (int) BFD_RELOC_LO16); | |
4299 | else | |
4300 | { | |
4301 | macro_build ((char *) NULL, &icnt, &imm_expr, "ori", "t,r,i", | |
4302 | treg, sreg, (int) BFD_RELOC_LO16); | |
2396cfb9 TS |
4303 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "nor", |
4304 | "d,v,t", treg, treg, 0); | |
252b5132 RH |
4305 | } |
4306 | return; | |
4307 | } | |
4308 | ||
d6bc6245 | 4309 | load_register (&icnt, AT, &imm_expr, HAVE_64BIT_GPRS); |
2396cfb9 TS |
4310 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, s2, "d,v,t", |
4311 | treg, sreg, AT); | |
252b5132 RH |
4312 | break; |
4313 | ||
4314 | case M_BEQ_I: | |
4315 | s = "beq"; | |
4316 | goto beq_i; | |
4317 | case M_BEQL_I: | |
4318 | s = "beql"; | |
4319 | likely = 1; | |
4320 | goto beq_i; | |
4321 | case M_BNE_I: | |
4322 | s = "bne"; | |
4323 | goto beq_i; | |
4324 | case M_BNEL_I: | |
4325 | s = "bnel"; | |
4326 | likely = 1; | |
4327 | beq_i: | |
4328 | if (imm_expr.X_op == O_constant && imm_expr.X_add_number == 0) | |
4329 | { | |
4330 | macro_build ((char *) NULL, &icnt, &offset_expr, s, "s,t,p", sreg, | |
4331 | 0); | |
4332 | return; | |
4333 | } | |
4d34fb5f | 4334 | load_register (&icnt, AT, &imm_expr, HAVE_64BIT_GPRS); |
252b5132 RH |
4335 | macro_build ((char *) NULL, &icnt, &offset_expr, s, "s,t,p", sreg, AT); |
4336 | break; | |
4337 | ||
4338 | case M_BGEL: | |
4339 | likely = 1; | |
4340 | case M_BGE: | |
4341 | if (treg == 0) | |
4342 | { | |
4343 | macro_build ((char *) NULL, &icnt, &offset_expr, | |
2396cfb9 | 4344 | likely ? "bgezl" : "bgez", "s,p", sreg); |
252b5132 RH |
4345 | return; |
4346 | } | |
4347 | if (sreg == 0) | |
4348 | { | |
4349 | macro_build ((char *) NULL, &icnt, &offset_expr, | |
2396cfb9 | 4350 | likely ? "blezl" : "blez", "s,p", treg); |
252b5132 RH |
4351 | return; |
4352 | } | |
2396cfb9 TS |
4353 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "slt", "d,v,t", |
4354 | AT, sreg, treg); | |
252b5132 | 4355 | macro_build ((char *) NULL, &icnt, &offset_expr, |
9a41af64 | 4356 | likely ? "beql" : "beq", "s,t,p", AT, 0); |
252b5132 RH |
4357 | break; |
4358 | ||
4359 | case M_BGTL_I: | |
4360 | likely = 1; | |
4361 | case M_BGT_I: | |
4362 | /* check for > max integer */ | |
4363 | maxnum = 0x7fffffff; | |
ca4e0257 | 4364 | if (HAVE_64BIT_GPRS && sizeof (maxnum) > 4) |
252b5132 RH |
4365 | { |
4366 | maxnum <<= 16; | |
4367 | maxnum |= 0xffff; | |
4368 | maxnum <<= 16; | |
4369 | maxnum |= 0xffff; | |
4370 | } | |
4371 | if (imm_expr.X_op == O_constant | |
4372 | && imm_expr.X_add_number >= maxnum | |
ca4e0257 | 4373 | && (HAVE_32BIT_GPRS || sizeof (maxnum) > 4)) |
252b5132 RH |
4374 | { |
4375 | do_false: | |
4376 | /* result is always false */ | |
4377 | if (! likely) | |
4378 | { | |
39c0a331 L |
4379 | if (warn_nops) |
4380 | as_warn (_("Branch %s is always false (nop)"), | |
4381 | ip->insn_mo->name); | |
2396cfb9 TS |
4382 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "nop", |
4383 | "", 0); | |
252b5132 RH |
4384 | } |
4385 | else | |
4386 | { | |
39c0a331 L |
4387 | if (warn_nops) |
4388 | as_warn (_("Branch likely %s is always false"), | |
4389 | ip->insn_mo->name); | |
252b5132 RH |
4390 | macro_build ((char *) NULL, &icnt, &offset_expr, "bnel", |
4391 | "s,t,p", 0, 0); | |
4392 | } | |
4393 | return; | |
4394 | } | |
4395 | if (imm_expr.X_op != O_constant) | |
4396 | as_bad (_("Unsupported large constant")); | |
f9419b05 | 4397 | ++imm_expr.X_add_number; |
252b5132 RH |
4398 | /* FALLTHROUGH */ |
4399 | case M_BGE_I: | |
4400 | case M_BGEL_I: | |
4401 | if (mask == M_BGEL_I) | |
4402 | likely = 1; | |
4403 | if (imm_expr.X_op == O_constant && imm_expr.X_add_number == 0) | |
4404 | { | |
4405 | macro_build ((char *) NULL, &icnt, &offset_expr, | |
9a41af64 | 4406 | likely ? "bgezl" : "bgez", "s,p", sreg); |
252b5132 RH |
4407 | return; |
4408 | } | |
4409 | if (imm_expr.X_op == O_constant && imm_expr.X_add_number == 1) | |
4410 | { | |
4411 | macro_build ((char *) NULL, &icnt, &offset_expr, | |
9a41af64 | 4412 | likely ? "bgtzl" : "bgtz", "s,p", sreg); |
252b5132 RH |
4413 | return; |
4414 | } | |
4415 | maxnum = 0x7fffffff; | |
ca4e0257 | 4416 | if (HAVE_64BIT_GPRS && sizeof (maxnum) > 4) |
252b5132 RH |
4417 | { |
4418 | maxnum <<= 16; | |
4419 | maxnum |= 0xffff; | |
4420 | maxnum <<= 16; | |
4421 | maxnum |= 0xffff; | |
4422 | } | |
4423 | maxnum = - maxnum - 1; | |
4424 | if (imm_expr.X_op == O_constant | |
4425 | && imm_expr.X_add_number <= maxnum | |
ca4e0257 | 4426 | && (HAVE_32BIT_GPRS || sizeof (maxnum) > 4)) |
252b5132 RH |
4427 | { |
4428 | do_true: | |
4429 | /* result is always true */ | |
4430 | as_warn (_("Branch %s is always true"), ip->insn_mo->name); | |
4431 | macro_build ((char *) NULL, &icnt, &offset_expr, "b", "p"); | |
4432 | return; | |
4433 | } | |
4434 | set_at (&icnt, sreg, 0); | |
4435 | macro_build ((char *) NULL, &icnt, &offset_expr, | |
9a41af64 | 4436 | likely ? "beql" : "beq", "s,t,p", AT, 0); |
252b5132 RH |
4437 | break; |
4438 | ||
4439 | case M_BGEUL: | |
4440 | likely = 1; | |
4441 | case M_BGEU: | |
4442 | if (treg == 0) | |
4443 | goto do_true; | |
4444 | if (sreg == 0) | |
4445 | { | |
4446 | macro_build ((char *) NULL, &icnt, &offset_expr, | |
9a41af64 | 4447 | likely ? "beql" : "beq", "s,t,p", 0, treg); |
252b5132 RH |
4448 | return; |
4449 | } | |
2396cfb9 TS |
4450 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "sltu", |
4451 | "d,v,t", AT, sreg, treg); | |
252b5132 | 4452 | macro_build ((char *) NULL, &icnt, &offset_expr, |
9a41af64 | 4453 | likely ? "beql" : "beq", "s,t,p", AT, 0); |
252b5132 RH |
4454 | break; |
4455 | ||
4456 | case M_BGTUL_I: | |
4457 | likely = 1; | |
4458 | case M_BGTU_I: | |
4459 | if (sreg == 0 | |
ca4e0257 | 4460 | || (HAVE_32BIT_GPRS |
252b5132 | 4461 | && imm_expr.X_op == O_constant |
956cd1d6 | 4462 | && imm_expr.X_add_number == (offsetT) 0xffffffff)) |
252b5132 RH |
4463 | goto do_false; |
4464 | if (imm_expr.X_op != O_constant) | |
4465 | as_bad (_("Unsupported large constant")); | |
f9419b05 | 4466 | ++imm_expr.X_add_number; |
252b5132 RH |
4467 | /* FALLTHROUGH */ |
4468 | case M_BGEU_I: | |
4469 | case M_BGEUL_I: | |
4470 | if (mask == M_BGEUL_I) | |
4471 | likely = 1; | |
4472 | if (imm_expr.X_op == O_constant && imm_expr.X_add_number == 0) | |
4473 | goto do_true; | |
4474 | if (imm_expr.X_op == O_constant && imm_expr.X_add_number == 1) | |
4475 | { | |
4476 | macro_build ((char *) NULL, &icnt, &offset_expr, | |
9a41af64 | 4477 | likely ? "bnel" : "bne", "s,t,p", sreg, 0); |
252b5132 RH |
4478 | return; |
4479 | } | |
4480 | set_at (&icnt, sreg, 1); | |
4481 | macro_build ((char *) NULL, &icnt, &offset_expr, | |
9a41af64 | 4482 | likely ? "beql" : "beq", "s,t,p", AT, 0); |
252b5132 RH |
4483 | break; |
4484 | ||
4485 | case M_BGTL: | |
4486 | likely = 1; | |
4487 | case M_BGT: | |
4488 | if (treg == 0) | |
4489 | { | |
4490 | macro_build ((char *) NULL, &icnt, &offset_expr, | |
9a41af64 | 4491 | likely ? "bgtzl" : "bgtz", "s,p", sreg); |
252b5132 RH |
4492 | return; |
4493 | } | |
4494 | if (sreg == 0) | |
4495 | { | |
4496 | macro_build ((char *) NULL, &icnt, &offset_expr, | |
9a41af64 | 4497 | likely ? "bltzl" : "bltz", "s,p", treg); |
252b5132 RH |
4498 | return; |
4499 | } | |
2396cfb9 TS |
4500 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "slt", "d,v,t", |
4501 | AT, treg, sreg); | |
252b5132 | 4502 | macro_build ((char *) NULL, &icnt, &offset_expr, |
9a41af64 | 4503 | likely ? "bnel" : "bne", "s,t,p", AT, 0); |
252b5132 RH |
4504 | break; |
4505 | ||
4506 | case M_BGTUL: | |
4507 | likely = 1; | |
4508 | case M_BGTU: | |
4509 | if (treg == 0) | |
4510 | { | |
4511 | macro_build ((char *) NULL, &icnt, &offset_expr, | |
9a41af64 | 4512 | likely ? "bnel" : "bne", "s,t,p", sreg, 0); |
252b5132 RH |
4513 | return; |
4514 | } | |
4515 | if (sreg == 0) | |
4516 | goto do_false; | |
2396cfb9 TS |
4517 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "sltu", |
4518 | "d,v,t", AT, treg, sreg); | |
252b5132 | 4519 | macro_build ((char *) NULL, &icnt, &offset_expr, |
9a41af64 | 4520 | likely ? "bnel" : "bne", "s,t,p", AT, 0); |
252b5132 RH |
4521 | break; |
4522 | ||
4523 | case M_BLEL: | |
4524 | likely = 1; | |
4525 | case M_BLE: | |
4526 | if (treg == 0) | |
4527 | { | |
4528 | macro_build ((char *) NULL, &icnt, &offset_expr, | |
9a41af64 | 4529 | likely ? "blezl" : "blez", "s,p", sreg); |
252b5132 RH |
4530 | return; |
4531 | } | |
4532 | if (sreg == 0) | |
4533 | { | |
4534 | macro_build ((char *) NULL, &icnt, &offset_expr, | |
9a41af64 | 4535 | likely ? "bgezl" : "bgez", "s,p", treg); |
252b5132 RH |
4536 | return; |
4537 | } | |
2396cfb9 TS |
4538 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "slt", "d,v,t", |
4539 | AT, treg, sreg); | |
252b5132 | 4540 | macro_build ((char *) NULL, &icnt, &offset_expr, |
9a41af64 | 4541 | likely ? "beql" : "beq", "s,t,p", AT, 0); |
252b5132 RH |
4542 | break; |
4543 | ||
4544 | case M_BLEL_I: | |
4545 | likely = 1; | |
4546 | case M_BLE_I: | |
4547 | maxnum = 0x7fffffff; | |
ca4e0257 | 4548 | if (HAVE_64BIT_GPRS && sizeof (maxnum) > 4) |
252b5132 RH |
4549 | { |
4550 | maxnum <<= 16; | |
4551 | maxnum |= 0xffff; | |
4552 | maxnum <<= 16; | |
4553 | maxnum |= 0xffff; | |
4554 | } | |
4555 | if (imm_expr.X_op == O_constant | |
4556 | && imm_expr.X_add_number >= maxnum | |
ca4e0257 | 4557 | && (HAVE_32BIT_GPRS || sizeof (maxnum) > 4)) |
252b5132 RH |
4558 | goto do_true; |
4559 | if (imm_expr.X_op != O_constant) | |
4560 | as_bad (_("Unsupported large constant")); | |
f9419b05 | 4561 | ++imm_expr.X_add_number; |
252b5132 RH |
4562 | /* FALLTHROUGH */ |
4563 | case M_BLT_I: | |
4564 | case M_BLTL_I: | |
4565 | if (mask == M_BLTL_I) | |
4566 | likely = 1; | |
4567 | if (imm_expr.X_op == O_constant && imm_expr.X_add_number == 0) | |
4568 | { | |
4569 | macro_build ((char *) NULL, &icnt, &offset_expr, | |
9a41af64 | 4570 | likely ? "bltzl" : "bltz", "s,p", sreg); |
252b5132 RH |
4571 | return; |
4572 | } | |
4573 | if (imm_expr.X_op == O_constant && imm_expr.X_add_number == 1) | |
4574 | { | |
4575 | macro_build ((char *) NULL, &icnt, &offset_expr, | |
9a41af64 | 4576 | likely ? "blezl" : "blez", "s,p", sreg); |
252b5132 RH |
4577 | return; |
4578 | } | |
4579 | set_at (&icnt, sreg, 0); | |
4580 | macro_build ((char *) NULL, &icnt, &offset_expr, | |
9a41af64 | 4581 | likely ? "bnel" : "bne", "s,t,p", AT, 0); |
252b5132 RH |
4582 | break; |
4583 | ||
4584 | case M_BLEUL: | |
4585 | likely = 1; | |
4586 | case M_BLEU: | |
4587 | if (treg == 0) | |
4588 | { | |
4589 | macro_build ((char *) NULL, &icnt, &offset_expr, | |
9a41af64 | 4590 | likely ? "beql" : "beq", "s,t,p", sreg, 0); |
252b5132 RH |
4591 | return; |
4592 | } | |
4593 | if (sreg == 0) | |
4594 | goto do_true; | |
2396cfb9 TS |
4595 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "sltu", |
4596 | "d,v,t", AT, treg, sreg); | |
252b5132 | 4597 | macro_build ((char *) NULL, &icnt, &offset_expr, |
9a41af64 | 4598 | likely ? "beql" : "beq", "s,t,p", AT, 0); |
252b5132 RH |
4599 | break; |
4600 | ||
4601 | case M_BLEUL_I: | |
4602 | likely = 1; | |
4603 | case M_BLEU_I: | |
4604 | if (sreg == 0 | |
ca4e0257 | 4605 | || (HAVE_32BIT_GPRS |
252b5132 | 4606 | && imm_expr.X_op == O_constant |
956cd1d6 | 4607 | && imm_expr.X_add_number == (offsetT) 0xffffffff)) |
252b5132 RH |
4608 | goto do_true; |
4609 | if (imm_expr.X_op != O_constant) | |
4610 | as_bad (_("Unsupported large constant")); | |
f9419b05 | 4611 | ++imm_expr.X_add_number; |
252b5132 RH |
4612 | /* FALLTHROUGH */ |
4613 | case M_BLTU_I: | |
4614 | case M_BLTUL_I: | |
4615 | if (mask == M_BLTUL_I) | |
4616 | likely = 1; | |
4617 | if (imm_expr.X_op == O_constant && imm_expr.X_add_number == 0) | |
4618 | goto do_false; | |
4619 | if (imm_expr.X_op == O_constant && imm_expr.X_add_number == 1) | |
4620 | { | |
4621 | macro_build ((char *) NULL, &icnt, &offset_expr, | |
4622 | likely ? "beql" : "beq", | |
4623 | "s,t,p", sreg, 0); | |
4624 | return; | |
4625 | } | |
4626 | set_at (&icnt, sreg, 1); | |
4627 | macro_build ((char *) NULL, &icnt, &offset_expr, | |
9a41af64 | 4628 | likely ? "bnel" : "bne", "s,t,p", AT, 0); |
252b5132 RH |
4629 | break; |
4630 | ||
4631 | case M_BLTL: | |
4632 | likely = 1; | |
4633 | case M_BLT: | |
4634 | if (treg == 0) | |
4635 | { | |
4636 | macro_build ((char *) NULL, &icnt, &offset_expr, | |
9a41af64 | 4637 | likely ? "bltzl" : "bltz", "s,p", sreg); |
252b5132 RH |
4638 | return; |
4639 | } | |
4640 | if (sreg == 0) | |
4641 | { | |
4642 | macro_build ((char *) NULL, &icnt, &offset_expr, | |
9a41af64 | 4643 | likely ? "bgtzl" : "bgtz", "s,p", treg); |
252b5132 RH |
4644 | return; |
4645 | } | |
2396cfb9 TS |
4646 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "slt", "d,v,t", |
4647 | AT, sreg, treg); | |
252b5132 | 4648 | macro_build ((char *) NULL, &icnt, &offset_expr, |
9a41af64 | 4649 | likely ? "bnel" : "bne", "s,t,p", AT, 0); |
252b5132 RH |
4650 | break; |
4651 | ||
4652 | case M_BLTUL: | |
4653 | likely = 1; | |
4654 | case M_BLTU: | |
4655 | if (treg == 0) | |
4656 | goto do_false; | |
4657 | if (sreg == 0) | |
4658 | { | |
4659 | macro_build ((char *) NULL, &icnt, &offset_expr, | |
9a41af64 | 4660 | likely ? "bnel" : "bne", "s,t,p", 0, treg); |
252b5132 RH |
4661 | return; |
4662 | } | |
2396cfb9 TS |
4663 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "sltu", |
4664 | "d,v,t", AT, sreg, | |
252b5132 RH |
4665 | treg); |
4666 | macro_build ((char *) NULL, &icnt, &offset_expr, | |
9a41af64 | 4667 | likely ? "bnel" : "bne", "s,t,p", AT, 0); |
252b5132 RH |
4668 | break; |
4669 | ||
4670 | case M_DDIV_3: | |
4671 | dbl = 1; | |
4672 | case M_DIV_3: | |
4673 | s = "mflo"; | |
4674 | goto do_div3; | |
4675 | case M_DREM_3: | |
4676 | dbl = 1; | |
4677 | case M_REM_3: | |
4678 | s = "mfhi"; | |
4679 | do_div3: | |
4680 | if (treg == 0) | |
4681 | { | |
4682 | as_warn (_("Divide by zero.")); | |
4683 | if (mips_trap) | |
2396cfb9 | 4684 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "teq", |
9bd7d936 | 4685 | "s,t,q", 0, 0, 7); |
252b5132 | 4686 | else |
2396cfb9 TS |
4687 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "break", |
4688 | "c", 7); | |
252b5132 RH |
4689 | return; |
4690 | } | |
4691 | ||
b34976b6 | 4692 | mips_emit_delays (TRUE); |
252b5132 RH |
4693 | ++mips_opts.noreorder; |
4694 | mips_any_noreorder = 1; | |
4695 | if (mips_trap) | |
4696 | { | |
2396cfb9 | 4697 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "teq", |
9bd7d936 | 4698 | "s,t,q", treg, 0, 7); |
2396cfb9 | 4699 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, |
9a41af64 | 4700 | dbl ? "ddiv" : "div", "z,s,t", sreg, treg); |
252b5132 RH |
4701 | } |
4702 | else | |
4703 | { | |
4704 | expr1.X_add_number = 8; | |
4705 | macro_build ((char *) NULL, &icnt, &expr1, "bne", "s,t,p", treg, 0); | |
2396cfb9 | 4706 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, |
9a41af64 | 4707 | dbl ? "ddiv" : "div", "z,s,t", sreg, treg); |
2396cfb9 TS |
4708 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "break", |
4709 | "c", 7); | |
252b5132 RH |
4710 | } |
4711 | expr1.X_add_number = -1; | |
4712 | macro_build ((char *) NULL, &icnt, &expr1, | |
4713 | dbl ? "daddiu" : "addiu", | |
4714 | "t,r,j", AT, 0, (int) BFD_RELOC_LO16); | |
4715 | expr1.X_add_number = mips_trap ? (dbl ? 12 : 8) : (dbl ? 20 : 16); | |
4716 | macro_build ((char *) NULL, &icnt, &expr1, "bne", "s,t,p", treg, AT); | |
4717 | if (dbl) | |
4718 | { | |
4719 | expr1.X_add_number = 1; | |
4720 | macro_build ((char *) NULL, &icnt, &expr1, "daddiu", "t,r,j", AT, 0, | |
4721 | (int) BFD_RELOC_LO16); | |
2396cfb9 TS |
4722 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "dsll32", |
4723 | "d,w,<", AT, AT, 31); | |
252b5132 RH |
4724 | } |
4725 | else | |
4726 | { | |
4727 | expr1.X_add_number = 0x80000000; | |
4728 | macro_build ((char *) NULL, &icnt, &expr1, "lui", "t,u", AT, | |
4729 | (int) BFD_RELOC_HI16); | |
4730 | } | |
4731 | if (mips_trap) | |
4732 | { | |
2396cfb9 | 4733 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "teq", |
9bd7d936 | 4734 | "s,t,q", sreg, AT, 6); |
252b5132 RH |
4735 | /* We want to close the noreorder block as soon as possible, so |
4736 | that later insns are available for delay slot filling. */ | |
4737 | --mips_opts.noreorder; | |
4738 | } | |
4739 | else | |
4740 | { | |
4741 | expr1.X_add_number = 8; | |
4742 | macro_build ((char *) NULL, &icnt, &expr1, "bne", "s,t,p", sreg, AT); | |
2396cfb9 TS |
4743 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "nop", "", |
4744 | 0); | |
252b5132 RH |
4745 | |
4746 | /* We want to close the noreorder block as soon as possible, so | |
4747 | that later insns are available for delay slot filling. */ | |
4748 | --mips_opts.noreorder; | |
4749 | ||
2396cfb9 TS |
4750 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "break", |
4751 | "c", 6); | |
252b5132 | 4752 | } |
2396cfb9 | 4753 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, s, "d", dreg); |
252b5132 RH |
4754 | break; |
4755 | ||
4756 | case M_DIV_3I: | |
4757 | s = "div"; | |
4758 | s2 = "mflo"; | |
4759 | goto do_divi; | |
4760 | case M_DIVU_3I: | |
4761 | s = "divu"; | |
4762 | s2 = "mflo"; | |
4763 | goto do_divi; | |
4764 | case M_REM_3I: | |
4765 | s = "div"; | |
4766 | s2 = "mfhi"; | |
4767 | goto do_divi; | |
4768 | case M_REMU_3I: | |
4769 | s = "divu"; | |
4770 | s2 = "mfhi"; | |
4771 | goto do_divi; | |
4772 | case M_DDIV_3I: | |
4773 | dbl = 1; | |
4774 | s = "ddiv"; | |
4775 | s2 = "mflo"; | |
4776 | goto do_divi; | |
4777 | case M_DDIVU_3I: | |
4778 | dbl = 1; | |
4779 | s = "ddivu"; | |
4780 | s2 = "mflo"; | |
4781 | goto do_divi; | |
4782 | case M_DREM_3I: | |
4783 | dbl = 1; | |
4784 | s = "ddiv"; | |
4785 | s2 = "mfhi"; | |
4786 | goto do_divi; | |
4787 | case M_DREMU_3I: | |
4788 | dbl = 1; | |
4789 | s = "ddivu"; | |
4790 | s2 = "mfhi"; | |
4791 | do_divi: | |
4792 | if (imm_expr.X_op == O_constant && imm_expr.X_add_number == 0) | |
4793 | { | |
4794 | as_warn (_("Divide by zero.")); | |
4795 | if (mips_trap) | |
2396cfb9 | 4796 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "teq", |
9bd7d936 | 4797 | "s,t,q", 0, 0, 7); |
252b5132 | 4798 | else |
2396cfb9 TS |
4799 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "break", |
4800 | "c", 7); | |
252b5132 RH |
4801 | return; |
4802 | } | |
4803 | if (imm_expr.X_op == O_constant && imm_expr.X_add_number == 1) | |
4804 | { | |
4805 | if (strcmp (s2, "mflo") == 0) | |
ea1fb5dc | 4806 | move_register (&icnt, dreg, sreg); |
252b5132 | 4807 | else |
ea1fb5dc | 4808 | move_register (&icnt, dreg, 0); |
252b5132 RH |
4809 | return; |
4810 | } | |
4811 | if (imm_expr.X_op == O_constant | |
4812 | && imm_expr.X_add_number == -1 | |
4813 | && s[strlen (s) - 1] != 'u') | |
4814 | { | |
4815 | if (strcmp (s2, "mflo") == 0) | |
4816 | { | |
2396cfb9 TS |
4817 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, |
4818 | dbl ? "dneg" : "neg", "d,w", dreg, sreg); | |
252b5132 RH |
4819 | } |
4820 | else | |
ea1fb5dc | 4821 | move_register (&icnt, dreg, 0); |
252b5132 RH |
4822 | return; |
4823 | } | |
4824 | ||
4825 | load_register (&icnt, AT, &imm_expr, dbl); | |
2396cfb9 TS |
4826 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, s, "z,s,t", |
4827 | sreg, AT); | |
4828 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, s2, "d", dreg); | |
252b5132 RH |
4829 | break; |
4830 | ||
4831 | case M_DIVU_3: | |
4832 | s = "divu"; | |
4833 | s2 = "mflo"; | |
4834 | goto do_divu3; | |
4835 | case M_REMU_3: | |
4836 | s = "divu"; | |
4837 | s2 = "mfhi"; | |
4838 | goto do_divu3; | |
4839 | case M_DDIVU_3: | |
4840 | s = "ddivu"; | |
4841 | s2 = "mflo"; | |
4842 | goto do_divu3; | |
4843 | case M_DREMU_3: | |
4844 | s = "ddivu"; | |
4845 | s2 = "mfhi"; | |
4846 | do_divu3: | |
b34976b6 | 4847 | mips_emit_delays (TRUE); |
252b5132 RH |
4848 | ++mips_opts.noreorder; |
4849 | mips_any_noreorder = 1; | |
4850 | if (mips_trap) | |
4851 | { | |
2396cfb9 | 4852 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "teq", |
9bd7d936 | 4853 | "s,t,q", treg, 0, 7); |
2396cfb9 TS |
4854 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, s, "z,s,t", |
4855 | sreg, treg); | |
252b5132 RH |
4856 | /* We want to close the noreorder block as soon as possible, so |
4857 | that later insns are available for delay slot filling. */ | |
4858 | --mips_opts.noreorder; | |
4859 | } | |
4860 | else | |
4861 | { | |
4862 | expr1.X_add_number = 8; | |
4863 | macro_build ((char *) NULL, &icnt, &expr1, "bne", "s,t,p", treg, 0); | |
2396cfb9 TS |
4864 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, s, "z,s,t", |
4865 | sreg, treg); | |
252b5132 RH |
4866 | |
4867 | /* We want to close the noreorder block as soon as possible, so | |
4868 | that later insns are available for delay slot filling. */ | |
4869 | --mips_opts.noreorder; | |
2396cfb9 TS |
4870 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "break", |
4871 | "c", 7); | |
252b5132 | 4872 | } |
2396cfb9 | 4873 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, s2, "d", dreg); |
252b5132 RH |
4874 | return; |
4875 | ||
4876 | case M_DLA_AB: | |
4877 | dbl = 1; | |
4878 | case M_LA_AB: | |
4879 | /* Load the address of a symbol into a register. If breg is not | |
4880 | zero, we then add a base register to it. */ | |
4881 | ||
3bec30a8 TS |
4882 | if (dbl && HAVE_32BIT_GPRS) |
4883 | as_warn (_("dla used to load 32-bit register")); | |
4884 | ||
c90bbe5b | 4885 | if (! dbl && HAVE_64BIT_OBJECTS) |
3bec30a8 TS |
4886 | as_warn (_("la used to load 64-bit address")); |
4887 | ||
0c11417f MR |
4888 | if (offset_expr.X_op == O_constant |
4889 | && offset_expr.X_add_number >= -0x8000 | |
4890 | && offset_expr.X_add_number < 0x8000) | |
4891 | { | |
4892 | macro_build ((char *) NULL, &icnt, &offset_expr, | |
f5040a92 AO |
4893 | (dbl || HAVE_64BIT_ADDRESSES) ? "daddiu" : |
4894 | HAVE_NEWABI ? "addi" : "addiu", | |
0c11417f MR |
4895 | "t,r,j", treg, sreg, (int) BFD_RELOC_LO16); |
4896 | return; | |
4897 | } | |
4898 | ||
afdbd6d0 CD |
4899 | if (treg == breg) |
4900 | { | |
4901 | tempreg = AT; | |
4902 | used_at = 1; | |
4903 | } | |
4904 | else | |
4905 | { | |
4906 | tempreg = treg; | |
4907 | used_at = 0; | |
4908 | } | |
4909 | ||
252b5132 RH |
4910 | /* When generating embedded PIC code, we permit expressions of |
4911 | the form | |
afdbd6d0 CD |
4912 | la $treg,foo-bar |
4913 | la $treg,foo-bar($breg) | |
bb2d6cd7 | 4914 | where bar is an address in the current section. These are used |
252b5132 RH |
4915 | when getting the addresses of functions. We don't permit |
4916 | X_add_number to be non-zero, because if the symbol is | |
4917 | external the relaxing code needs to know that any addend is | |
4918 | purely the offset to X_op_symbol. */ | |
4919 | if (mips_pic == EMBEDDED_PIC | |
4920 | && offset_expr.X_op == O_subtract | |
49309057 | 4921 | && (symbol_constant_p (offset_expr.X_op_symbol) |
bb2d6cd7 | 4922 | ? S_GET_SEGMENT (offset_expr.X_op_symbol) == now_seg |
49309057 ILT |
4923 | : (symbol_equated_p (offset_expr.X_op_symbol) |
4924 | && (S_GET_SEGMENT | |
4925 | (symbol_get_value_expression (offset_expr.X_op_symbol) | |
4926 | ->X_add_symbol) | |
bb2d6cd7 | 4927 | == now_seg))) |
bb2d6cd7 GK |
4928 | && (offset_expr.X_add_number == 0 |
4929 | || OUTPUT_FLAVOR == bfd_target_elf_flavour)) | |
252b5132 | 4930 | { |
afdbd6d0 CD |
4931 | if (breg == 0) |
4932 | { | |
4933 | tempreg = treg; | |
4934 | used_at = 0; | |
4935 | macro_build ((char *) NULL, &icnt, &offset_expr, "lui", "t,u", | |
4936 | tempreg, (int) BFD_RELOC_PCREL_HI16_S); | |
4937 | } | |
4938 | else | |
4939 | { | |
4940 | macro_build ((char *) NULL, &icnt, &offset_expr, "lui", "t,u", | |
4941 | tempreg, (int) BFD_RELOC_PCREL_HI16_S); | |
4942 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, | |
4d34fb5f | 4943 | (dbl || HAVE_64BIT_ADDRESSES) ? "daddu" : "addu", |
afdbd6d0 CD |
4944 | "d,v,t", tempreg, tempreg, breg); |
4945 | } | |
252b5132 | 4946 | macro_build ((char *) NULL, &icnt, &offset_expr, |
4d34fb5f | 4947 | (dbl || HAVE_64BIT_ADDRESSES) ? "daddiu" : "addiu", |
afdbd6d0 CD |
4948 | "t,r,j", treg, tempreg, (int) BFD_RELOC_PCREL_LO16); |
4949 | if (! used_at) | |
4950 | return; | |
4951 | break; | |
252b5132 RH |
4952 | } |
4953 | ||
4954 | if (offset_expr.X_op != O_symbol | |
4955 | && offset_expr.X_op != O_constant) | |
4956 | { | |
4957 | as_bad (_("expression too complex")); | |
4958 | offset_expr.X_op = O_constant; | |
4959 | } | |
4960 | ||
252b5132 | 4961 | if (offset_expr.X_op == O_constant) |
4d34fb5f TS |
4962 | load_register (&icnt, tempreg, &offset_expr, |
4963 | ((mips_pic == EMBEDDED_PIC || mips_pic == NO_PIC) | |
4964 | ? (dbl || HAVE_64BIT_ADDRESSES) | |
4965 | : HAVE_64BIT_ADDRESSES)); | |
252b5132 RH |
4966 | else if (mips_pic == NO_PIC) |
4967 | { | |
d6bc6245 | 4968 | /* If this is a reference to a GP relative symbol, we want |
cdf6fd85 | 4969 | addiu $tempreg,$gp,<sym> (BFD_RELOC_GPREL16) |
252b5132 RH |
4970 | Otherwise we want |
4971 | lui $tempreg,<sym> (BFD_RELOC_HI16_S) | |
4972 | addiu $tempreg,$tempreg,<sym> (BFD_RELOC_LO16) | |
4973 | If we have a constant, we need two instructions anyhow, | |
d6bc6245 | 4974 | so we may as well always use the latter form. |
76b3015f | 4975 | |
d6bc6245 TS |
4976 | With 64bit address space and a usable $at we want |
4977 | lui $tempreg,<sym> (BFD_RELOC_MIPS_HIGHEST) | |
4978 | lui $at,<sym> (BFD_RELOC_HI16_S) | |
4979 | daddiu $tempreg,<sym> (BFD_RELOC_MIPS_HIGHER) | |
4980 | daddiu $at,<sym> (BFD_RELOC_LO16) | |
4981 | dsll32 $tempreg,0 | |
3a482fd5 | 4982 | daddu $tempreg,$tempreg,$at |
76b3015f | 4983 | |
c03099e6 | 4984 | If $at is already in use, we use a path which is suboptimal |
d6bc6245 TS |
4985 | on superscalar processors. |
4986 | lui $tempreg,<sym> (BFD_RELOC_MIPS_HIGHEST) | |
4987 | daddiu $tempreg,<sym> (BFD_RELOC_MIPS_HIGHER) | |
4988 | dsll $tempreg,16 | |
4989 | daddiu $tempreg,<sym> (BFD_RELOC_HI16_S) | |
4990 | dsll $tempreg,16 | |
4991 | daddiu $tempreg,<sym> (BFD_RELOC_LO16) | |
4992 | */ | |
f9419b05 | 4993 | char *p = NULL; |
d6bc6245 | 4994 | if (HAVE_64BIT_ADDRESSES) |
252b5132 | 4995 | { |
d6bc6245 TS |
4996 | /* We don't do GP optimization for now because RELAX_ENCODE can't |
4997 | hold the data for such large chunks. */ | |
4998 | ||
460597ba | 4999 | if (used_at == 0 && ! mips_opts.noat) |
98d3f06f KH |
5000 | { |
5001 | macro_build (p, &icnt, &offset_expr, "lui", "t,u", | |
5002 | tempreg, (int) BFD_RELOC_MIPS_HIGHEST); | |
5003 | macro_build (p, &icnt, &offset_expr, "lui", "t,u", | |
5004 | AT, (int) BFD_RELOC_HI16_S); | |
5005 | macro_build (p, &icnt, &offset_expr, "daddiu", "t,r,j", | |
5006 | tempreg, tempreg, (int) BFD_RELOC_MIPS_HIGHER); | |
5007 | macro_build (p, &icnt, &offset_expr, "daddiu", "t,r,j", | |
5008 | AT, AT, (int) BFD_RELOC_LO16); | |
5009 | macro_build (p, &icnt, (expressionS *) NULL, "dsll32", | |
5010 | "d,w,<", tempreg, tempreg, 0); | |
3a482fd5 MR |
5011 | macro_build (p, &icnt, (expressionS *) NULL, "daddu", |
5012 | "d,v,t", tempreg, tempreg, AT); | |
98d3f06f KH |
5013 | used_at = 1; |
5014 | } | |
5015 | else | |
5016 | { | |
5017 | macro_build (p, &icnt, &offset_expr, "lui", "t,u", | |
5018 | tempreg, (int) BFD_RELOC_MIPS_HIGHEST); | |
5019 | macro_build (p, &icnt, &offset_expr, "daddiu", "t,r,j", | |
5020 | tempreg, tempreg, (int) BFD_RELOC_MIPS_HIGHER); | |
5021 | macro_build (p, &icnt, (expressionS *) NULL, "dsll", "d,w,<", | |
5022 | tempreg, tempreg, 16); | |
5023 | macro_build (p, &icnt, &offset_expr, "daddiu", "t,r,j", | |
5024 | tempreg, tempreg, (int) BFD_RELOC_HI16_S); | |
5025 | macro_build (p, &icnt, (expressionS *) NULL, "dsll", "d,w,<", | |
5026 | tempreg, tempreg, 16); | |
5027 | macro_build (p, &icnt, &offset_expr, "daddiu", "t,r,j", | |
5028 | tempreg, tempreg, (int) BFD_RELOC_LO16); | |
5029 | } | |
5030 | } | |
5031 | else | |
5032 | { | |
5033 | if ((valueT) offset_expr.X_add_number <= MAX_GPREL_OFFSET | |
5034 | && ! nopic_need_relax (offset_expr.X_add_symbol, 1)) | |
5035 | { | |
5036 | frag_grow (20); | |
f5040a92 AO |
5037 | macro_build ((char *) NULL, &icnt, &offset_expr, |
5038 | HAVE_NEWABI ? "addi" : "addiu", | |
c9914766 TS |
5039 | "t,r,j", tempreg, mips_gp_register, |
5040 | (int) BFD_RELOC_GPREL16); | |
98d3f06f KH |
5041 | p = frag_var (rs_machine_dependent, 8, 0, |
5042 | RELAX_ENCODE (4, 8, 0, 4, 0, | |
5043 | mips_opts.warn_about_macros), | |
5044 | offset_expr.X_add_symbol, 0, NULL); | |
5045 | } | |
5046 | macro_build_lui (p, &icnt, &offset_expr, tempreg); | |
5047 | if (p != NULL) | |
5048 | p += 4; | |
f5040a92 AO |
5049 | macro_build (p, &icnt, &offset_expr, |
5050 | HAVE_NEWABI ? "addi" : "addiu", | |
98d3f06f KH |
5051 | "t,r,j", tempreg, tempreg, (int) BFD_RELOC_LO16); |
5052 | } | |
252b5132 | 5053 | } |
f5040a92 | 5054 | else if (mips_pic == SVR4_PIC && ! mips_big_got && ! HAVE_NEWABI) |
252b5132 | 5055 | { |
9117d219 NC |
5056 | int lw_reloc_type = (int) BFD_RELOC_MIPS_GOT16; |
5057 | ||
252b5132 RH |
5058 | /* If this is a reference to an external symbol, and there |
5059 | is no constant, we want | |
5060 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_GOT16) | |
9117d219 NC |
5061 | or if tempreg is PIC_CALL_REG |
5062 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_CALL16) | |
252b5132 RH |
5063 | For a local symbol, we want |
5064 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_GOT16) | |
5065 | nop | |
5066 | addiu $tempreg,$tempreg,<sym> (BFD_RELOC_LO16) | |
5067 | ||
5068 | If we have a small constant, and this is a reference to | |
5069 | an external symbol, we want | |
5070 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_GOT16) | |
5071 | nop | |
5072 | addiu $tempreg,$tempreg,<constant> | |
5073 | For a local symbol, we want the same instruction | |
5074 | sequence, but we output a BFD_RELOC_LO16 reloc on the | |
5075 | addiu instruction. | |
5076 | ||
5077 | If we have a large constant, and this is a reference to | |
5078 | an external symbol, we want | |
5079 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_GOT16) | |
5080 | lui $at,<hiconstant> | |
5081 | addiu $at,$at,<loconstant> | |
5082 | addu $tempreg,$tempreg,$at | |
5083 | For a local symbol, we want the same instruction | |
5084 | sequence, but we output a BFD_RELOC_LO16 reloc on the | |
ed6fb7bd | 5085 | addiu instruction. |
ed6fb7bd SC |
5086 | */ |
5087 | ||
252b5132 RH |
5088 | expr1.X_add_number = offset_expr.X_add_number; |
5089 | offset_expr.X_add_number = 0; | |
5090 | frag_grow (32); | |
9117d219 NC |
5091 | if (expr1.X_add_number == 0 && tempreg == PIC_CALL_REG) |
5092 | lw_reloc_type = (int) BFD_RELOC_MIPS_CALL16; | |
4d34fb5f TS |
5093 | macro_build ((char *) NULL, &icnt, &offset_expr, |
5094 | HAVE_32BIT_ADDRESSES ? "lw" : "ld", | |
c9914766 | 5095 | "t,o(b)", tempreg, lw_reloc_type, mips_gp_register); |
252b5132 RH |
5096 | if (expr1.X_add_number == 0) |
5097 | { | |
5098 | int off; | |
f9419b05 | 5099 | char *p; |
252b5132 RH |
5100 | |
5101 | if (breg == 0) | |
5102 | off = 0; | |
5103 | else | |
5104 | { | |
5105 | /* We're going to put in an addu instruction using | |
5106 | tempreg, so we may as well insert the nop right | |
5107 | now. */ | |
5108 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, | |
5109 | "nop", ""); | |
5110 | off = 4; | |
5111 | } | |
5112 | p = frag_var (rs_machine_dependent, 8 - off, 0, | |
5113 | RELAX_ENCODE (0, 8 - off, -4 - off, 4 - off, 0, | |
5114 | (breg == 0 | |
5115 | ? mips_opts.warn_about_macros | |
5116 | : 0)), | |
c4e7957c | 5117 | offset_expr.X_add_symbol, 0, NULL); |
252b5132 RH |
5118 | if (breg == 0) |
5119 | { | |
5120 | macro_build (p, &icnt, (expressionS *) NULL, "nop", ""); | |
5121 | p += 4; | |
5122 | } | |
5123 | macro_build (p, &icnt, &expr1, | |
ca4e0257 | 5124 | HAVE_32BIT_ADDRESSES ? "addiu" : "daddiu", |
252b5132 RH |
5125 | "t,r,j", tempreg, tempreg, (int) BFD_RELOC_LO16); |
5126 | /* FIXME: If breg == 0, and the next instruction uses | |
5127 | $tempreg, then if this variant case is used an extra | |
5128 | nop will be generated. */ | |
5129 | } | |
5130 | else if (expr1.X_add_number >= -0x8000 | |
5131 | && expr1.X_add_number < 0x8000) | |
5132 | { | |
5133 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, | |
5134 | "nop", ""); | |
5135 | macro_build ((char *) NULL, &icnt, &expr1, | |
ca4e0257 | 5136 | HAVE_32BIT_ADDRESSES ? "addiu" : "daddiu", |
252b5132 | 5137 | "t,r,j", tempreg, tempreg, (int) BFD_RELOC_LO16); |
c4e7957c TS |
5138 | frag_var (rs_machine_dependent, 0, 0, |
5139 | RELAX_ENCODE (0, 0, -12, -4, 0, 0), | |
5140 | offset_expr.X_add_symbol, 0, NULL); | |
252b5132 RH |
5141 | } |
5142 | else | |
5143 | { | |
5144 | int off1; | |
5145 | ||
5146 | /* If we are going to add in a base register, and the | |
5147 | target register and the base register are the same, | |
5148 | then we are using AT as a temporary register. Since | |
5149 | we want to load the constant into AT, we add our | |
5150 | current AT (from the global offset table) and the | |
5151 | register into the register now, and pretend we were | |
5152 | not using a base register. */ | |
5153 | if (breg != treg) | |
5154 | off1 = 0; | |
5155 | else | |
5156 | { | |
5157 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, | |
5158 | "nop", ""); | |
5159 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, | |
ca4e0257 | 5160 | HAVE_32BIT_ADDRESSES ? "addu" : "daddu", |
252b5132 RH |
5161 | "d,v,t", treg, AT, breg); |
5162 | breg = 0; | |
5163 | tempreg = treg; | |
5164 | off1 = -8; | |
5165 | } | |
5166 | ||
5167 | /* Set mips_optimize around the lui instruction to avoid | |
5168 | inserting an unnecessary nop after the lw. */ | |
5169 | hold_mips_optimize = mips_optimize; | |
5170 | mips_optimize = 2; | |
c4e7957c | 5171 | macro_build_lui (NULL, &icnt, &expr1, AT); |
252b5132 RH |
5172 | mips_optimize = hold_mips_optimize; |
5173 | ||
5174 | macro_build ((char *) NULL, &icnt, &expr1, | |
ca4e0257 | 5175 | HAVE_32BIT_ADDRESSES ? "addiu" : "daddiu", |
252b5132 RH |
5176 | "t,r,j", AT, AT, (int) BFD_RELOC_LO16); |
5177 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, | |
ca4e0257 | 5178 | HAVE_32BIT_ADDRESSES ? "addu" : "daddu", |
252b5132 | 5179 | "d,v,t", tempreg, tempreg, AT); |
c4e7957c TS |
5180 | frag_var (rs_machine_dependent, 0, 0, |
5181 | RELAX_ENCODE (0, 0, -16 + off1, -8, 0, 0), | |
5182 | offset_expr.X_add_symbol, 0, NULL); | |
252b5132 RH |
5183 | used_at = 1; |
5184 | } | |
5185 | } | |
f5040a92 AO |
5186 | else if (mips_pic == SVR4_PIC && ! mips_big_got && HAVE_NEWABI) |
5187 | { | |
5188 | char *p = NULL; | |
5189 | int lw_reloc_type = (int) BFD_RELOC_MIPS_GOT_DISP; | |
5190 | int adj = 0; | |
5191 | ||
5192 | /* If this is a reference to an external, and there is no | |
5193 | constant, or local symbol (*), with or without a | |
5194 | constant, we want | |
5195 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_GOT_DISP) | |
5196 | or if tempreg is PIC_CALL_REG | |
5197 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_CALL16) | |
5198 | ||
5199 | If we have a small constant, and this is a reference to | |
5200 | an external symbol, we want | |
5201 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_GOT_DISP) | |
5202 | addiu $tempreg,$tempreg,<constant> | |
5203 | ||
5204 | If we have a large constant, and this is a reference to | |
5205 | an external symbol, we want | |
5206 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_GOT_DISP) | |
5207 | lui $at,<hiconstant> | |
5208 | addiu $at,$at,<loconstant> | |
5209 | addu $tempreg,$tempreg,$at | |
5210 | ||
5211 | (*) Other assemblers seem to prefer GOT_PAGE/GOT_OFST for | |
5212 | local symbols, even though it introduces an additional | |
5213 | instruction. */ | |
5214 | ||
5215 | frag_grow (28); | |
5216 | if (offset_expr.X_add_number == 0 && tempreg == PIC_CALL_REG) | |
5217 | lw_reloc_type = (int) BFD_RELOC_MIPS_CALL16; | |
5218 | if (offset_expr.X_add_number) | |
5219 | { | |
5220 | frag_now->tc_frag_data.tc_fr_offset = | |
5221 | expr1.X_add_number = offset_expr.X_add_number; | |
5222 | offset_expr.X_add_number = 0; | |
5223 | ||
5224 | macro_build ((char *) NULL, &icnt, &offset_expr, | |
5225 | HAVE_32BIT_ADDRESSES ? "lw" : "ld", | |
5226 | "t,o(b)", tempreg, lw_reloc_type, | |
5227 | mips_gp_register); | |
5228 | ||
5229 | if (expr1.X_add_number >= -0x8000 | |
5230 | && expr1.X_add_number < 0x8000) | |
5231 | { | |
5232 | macro_build ((char *) NULL, &icnt, &expr1, | |
5233 | HAVE_32BIT_ADDRESSES ? "addi" : "daddiu", | |
5234 | "t,r,j", tempreg, tempreg, | |
5235 | (int) BFD_RELOC_LO16); | |
5236 | p = frag_var (rs_machine_dependent, 4, 0, | |
5237 | RELAX_ENCODE (8, 4, 0, 0, 0, 0), | |
5238 | offset_expr.X_add_symbol, 0, NULL); | |
5239 | } | |
5240 | else if (IS_SEXT_32BIT_NUM (expr1.X_add_number)) | |
5241 | { | |
5242 | int dreg; | |
5243 | ||
5244 | /* If we are going to add in a base register, and the | |
5245 | target register and the base register are the same, | |
5246 | then we are using AT as a temporary register. Since | |
5247 | we want to load the constant into AT, we add our | |
5248 | current AT (from the global offset table) and the | |
5249 | register into the register now, and pretend we were | |
5250 | not using a base register. */ | |
5251 | if (breg != treg) | |
5252 | dreg = tempreg; | |
5253 | else | |
5254 | { | |
5255 | assert (tempreg == AT); | |
5256 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, | |
5257 | HAVE_32BIT_ADDRESSES ? "add" : "daddu", | |
5258 | "d,v,t", treg, AT, breg); | |
5259 | dreg = treg; | |
5260 | adj = 4; | |
5261 | } | |
5262 | ||
5263 | macro_build_lui ((char *) NULL, &icnt, &expr1, AT); | |
5264 | macro_build ((char *) NULL, &icnt, &expr1, | |
5265 | HAVE_32BIT_ADDRESSES ? "addi" : "daddiu", | |
5266 | "t,r,j", AT, AT, (int) BFD_RELOC_LO16); | |
5267 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, | |
5268 | HAVE_32BIT_ADDRESSES ? "add" : "daddu", | |
5269 | "d,v,t", dreg, dreg, AT); | |
5270 | ||
5271 | p = frag_var (rs_machine_dependent, 4 + adj, 0, | |
5272 | RELAX_ENCODE (16 + adj, 4 + adj, | |
5273 | 0, 0, 0, 0), | |
5274 | offset_expr.X_add_symbol, 0, NULL); | |
5275 | ||
5276 | used_at = 1; | |
5277 | } | |
5278 | else | |
5279 | as_bad (_("PIC code offset overflow (max 32 signed bits)")); | |
5280 | ||
5281 | offset_expr.X_add_number = expr1.X_add_number; | |
5282 | ||
5283 | macro_build (p, &icnt, &offset_expr, | |
5284 | HAVE_32BIT_ADDRESSES ? "lw" : "ld", | |
5285 | "t,o(b)", tempreg, (int) BFD_RELOC_MIPS_GOT_DISP, | |
5286 | mips_gp_register); | |
5287 | if (adj) | |
5288 | { | |
5289 | macro_build (p + 4, &icnt, (expressionS *) NULL, | |
5290 | HAVE_32BIT_ADDRESSES ? "add" : "daddu", | |
5291 | "d,v,t", treg, tempreg, breg); | |
5292 | breg = 0; | |
5293 | tempreg = treg; | |
5294 | } | |
5295 | } | |
5296 | else | |
5297 | { | |
5298 | macro_build ((char *) NULL, &icnt, &offset_expr, | |
5299 | HAVE_32BIT_ADDRESSES ? "lw" : "ld", | |
5300 | "t,o(b)", tempreg, lw_reloc_type, | |
5301 | mips_gp_register); | |
5302 | if (lw_reloc_type != BFD_RELOC_MIPS_GOT_DISP) | |
5303 | p = frag_var (rs_machine_dependent, 0, 0, | |
5304 | RELAX_ENCODE (0, 0, -4, 0, 0, 0), | |
5305 | offset_expr.X_add_symbol, 0, NULL); | |
5306 | } | |
5307 | ||
5308 | if (! p) | |
5309 | { | |
5310 | /* To avoid confusion in tc_gen_reloc, we must ensure | |
5311 | that this does not become a variant frag. */ | |
5312 | frag_wane (frag_now); | |
5313 | frag_new (0); | |
5314 | } | |
5315 | } | |
5316 | else if (mips_pic == SVR4_PIC && ! HAVE_NEWABI) | |
252b5132 RH |
5317 | { |
5318 | int gpdel; | |
f9419b05 | 5319 | char *p; |
9117d219 NC |
5320 | int lui_reloc_type = (int) BFD_RELOC_MIPS_GOT_HI16; |
5321 | int lw_reloc_type = (int) BFD_RELOC_MIPS_GOT_LO16; | |
ed6fb7bd | 5322 | int local_reloc_type = (int) BFD_RELOC_MIPS_GOT16; |
252b5132 RH |
5323 | |
5324 | /* This is the large GOT case. If this is a reference to an | |
5325 | external symbol, and there is no constant, we want | |
5326 | lui $tempreg,<sym> (BFD_RELOC_MIPS_GOT_HI16) | |
5327 | addu $tempreg,$tempreg,$gp | |
5328 | lw $tempreg,<sym>($tempreg) (BFD_RELOC_MIPS_GOT_LO16) | |
9117d219 NC |
5329 | or if tempreg is PIC_CALL_REG |
5330 | lui $tempreg,<sym> (BFD_RELOC_MIPS_CALL_HI16) | |
5331 | addu $tempreg,$tempreg,$gp | |
5332 | lw $tempreg,<sym>($tempreg) (BFD_RELOC_MIPS_CALL_LO16) | |
252b5132 RH |
5333 | For a local symbol, we want |
5334 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_GOT16) | |
5335 | nop | |
5336 | addiu $tempreg,$tempreg,<sym> (BFD_RELOC_LO16) | |
5337 | ||
5338 | If we have a small constant, and this is a reference to | |
5339 | an external symbol, we want | |
5340 | lui $tempreg,<sym> (BFD_RELOC_MIPS_GOT_HI16) | |
5341 | addu $tempreg,$tempreg,$gp | |
5342 | lw $tempreg,<sym>($tempreg) (BFD_RELOC_MIPS_GOT_LO16) | |
5343 | nop | |
5344 | addiu $tempreg,$tempreg,<constant> | |
5345 | For a local symbol, we want | |
5346 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_GOT16) | |
5347 | nop | |
5348 | addiu $tempreg,$tempreg,<constant> (BFD_RELOC_LO16) | |
5349 | ||
5350 | If we have a large constant, and this is a reference to | |
5351 | an external symbol, we want | |
5352 | lui $tempreg,<sym> (BFD_RELOC_MIPS_GOT_HI16) | |
5353 | addu $tempreg,$tempreg,$gp | |
5354 | lw $tempreg,<sym>($tempreg) (BFD_RELOC_MIPS_GOT_LO16) | |
5355 | lui $at,<hiconstant> | |
5356 | addiu $at,$at,<loconstant> | |
5357 | addu $tempreg,$tempreg,$at | |
5358 | For a local symbol, we want | |
5359 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_GOT16) | |
5360 | lui $at,<hiconstant> | |
5361 | addiu $at,$at,<loconstant> (BFD_RELOC_LO16) | |
5362 | addu $tempreg,$tempreg,$at | |
f5040a92 | 5363 | */ |
438c16b8 | 5364 | |
252b5132 RH |
5365 | expr1.X_add_number = offset_expr.X_add_number; |
5366 | offset_expr.X_add_number = 0; | |
5367 | frag_grow (52); | |
f7ea7ef2 | 5368 | if (reg_needs_delay (mips_gp_register)) |
252b5132 RH |
5369 | gpdel = 4; |
5370 | else | |
5371 | gpdel = 0; | |
9117d219 NC |
5372 | if (expr1.X_add_number == 0 && tempreg == PIC_CALL_REG) |
5373 | { | |
5374 | lui_reloc_type = (int) BFD_RELOC_MIPS_CALL_HI16; | |
5375 | lw_reloc_type = (int) BFD_RELOC_MIPS_CALL_LO16; | |
5376 | } | |
252b5132 | 5377 | macro_build ((char *) NULL, &icnt, &offset_expr, "lui", "t,u", |
9117d219 | 5378 | tempreg, lui_reloc_type); |
252b5132 | 5379 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, |
ca4e0257 | 5380 | HAVE_32BIT_ADDRESSES ? "addu" : "daddu", |
c9914766 | 5381 | "d,v,t", tempreg, tempreg, mips_gp_register); |
252b5132 | 5382 | macro_build ((char *) NULL, &icnt, &offset_expr, |
4d34fb5f | 5383 | HAVE_32BIT_ADDRESSES ? "lw" : "ld", |
9117d219 | 5384 | "t,o(b)", tempreg, lw_reloc_type, tempreg); |
252b5132 RH |
5385 | if (expr1.X_add_number == 0) |
5386 | { | |
5387 | int off; | |
5388 | ||
5389 | if (breg == 0) | |
5390 | off = 0; | |
5391 | else | |
5392 | { | |
5393 | /* We're going to put in an addu instruction using | |
5394 | tempreg, so we may as well insert the nop right | |
5395 | now. */ | |
5396 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, | |
5397 | "nop", ""); | |
5398 | off = 4; | |
5399 | } | |
5400 | ||
5401 | p = frag_var (rs_machine_dependent, 12 + gpdel, 0, | |
5402 | RELAX_ENCODE (12 + off, 12 + gpdel, gpdel, | |
5403 | 8 + gpdel, 0, | |
5404 | (breg == 0 | |
5405 | ? mips_opts.warn_about_macros | |
5406 | : 0)), | |
c4e7957c | 5407 | offset_expr.X_add_symbol, 0, NULL); |
252b5132 RH |
5408 | } |
5409 | else if (expr1.X_add_number >= -0x8000 | |
5410 | && expr1.X_add_number < 0x8000) | |
5411 | { | |
5412 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, | |
5413 | "nop", ""); | |
5414 | macro_build ((char *) NULL, &icnt, &expr1, | |
ca4e0257 | 5415 | HAVE_32BIT_ADDRESSES ? "addiu" : "daddiu", |
252b5132 RH |
5416 | "t,r,j", tempreg, tempreg, (int) BFD_RELOC_LO16); |
5417 | ||
5418 | p = frag_var (rs_machine_dependent, 12 + gpdel, 0, | |
5419 | RELAX_ENCODE (20, 12 + gpdel, gpdel, 8 + gpdel, 0, | |
5420 | (breg == 0 | |
5421 | ? mips_opts.warn_about_macros | |
5422 | : 0)), | |
c4e7957c | 5423 | offset_expr.X_add_symbol, 0, NULL); |
252b5132 RH |
5424 | } |
5425 | else | |
5426 | { | |
5427 | int adj, dreg; | |
5428 | ||
5429 | /* If we are going to add in a base register, and the | |
5430 | target register and the base register are the same, | |
5431 | then we are using AT as a temporary register. Since | |
5432 | we want to load the constant into AT, we add our | |
5433 | current AT (from the global offset table) and the | |
5434 | register into the register now, and pretend we were | |
5435 | not using a base register. */ | |
5436 | if (breg != treg) | |
5437 | { | |
5438 | adj = 0; | |
5439 | dreg = tempreg; | |
5440 | } | |
5441 | else | |
5442 | { | |
5443 | assert (tempreg == AT); | |
5444 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, | |
5445 | "nop", ""); | |
5446 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, | |
ca4e0257 | 5447 | HAVE_32BIT_ADDRESSES ? "addu" : "daddu", |
252b5132 RH |
5448 | "d,v,t", treg, AT, breg); |
5449 | dreg = treg; | |
5450 | adj = 8; | |
5451 | } | |
5452 | ||
5453 | /* Set mips_optimize around the lui instruction to avoid | |
5454 | inserting an unnecessary nop after the lw. */ | |
5455 | hold_mips_optimize = mips_optimize; | |
5456 | mips_optimize = 2; | |
c4e7957c | 5457 | macro_build_lui (NULL, &icnt, &expr1, AT); |
252b5132 RH |
5458 | mips_optimize = hold_mips_optimize; |
5459 | ||
5460 | macro_build ((char *) NULL, &icnt, &expr1, | |
ca4e0257 | 5461 | HAVE_32BIT_ADDRESSES ? "addiu" : "daddiu", |
252b5132 RH |
5462 | "t,r,j", AT, AT, (int) BFD_RELOC_LO16); |
5463 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, | |
ca4e0257 | 5464 | HAVE_32BIT_ADDRESSES ? "addu" : "daddu", |
252b5132 RH |
5465 | "d,v,t", dreg, dreg, AT); |
5466 | ||
5467 | p = frag_var (rs_machine_dependent, 16 + gpdel + adj, 0, | |
5468 | RELAX_ENCODE (24 + adj, 16 + gpdel + adj, gpdel, | |
5469 | 8 + gpdel, 0, | |
5470 | (breg == 0 | |
5471 | ? mips_opts.warn_about_macros | |
5472 | : 0)), | |
c4e7957c | 5473 | offset_expr.X_add_symbol, 0, NULL); |
252b5132 RH |
5474 | |
5475 | used_at = 1; | |
5476 | } | |
5477 | ||
5478 | if (gpdel > 0) | |
5479 | { | |
5480 | /* This is needed because this instruction uses $gp, but | |
f5040a92 | 5481 | the first instruction on the main stream does not. */ |
252b5132 RH |
5482 | macro_build (p, &icnt, (expressionS *) NULL, "nop", ""); |
5483 | p += 4; | |
5484 | } | |
ed6fb7bd | 5485 | |
252b5132 | 5486 | macro_build (p, &icnt, &offset_expr, |
4d34fb5f | 5487 | HAVE_32BIT_ADDRESSES ? "lw" : "ld", |
ed6fb7bd SC |
5488 | "t,o(b)", tempreg, |
5489 | local_reloc_type, | |
c9914766 | 5490 | mips_gp_register); |
252b5132 | 5491 | p += 4; |
f5040a92 | 5492 | if (expr1.X_add_number >= -0x8000 |
252b5132 RH |
5493 | && expr1.X_add_number < 0x8000) |
5494 | { | |
5495 | macro_build (p, &icnt, (expressionS *) NULL, "nop", ""); | |
5496 | p += 4; | |
5497 | macro_build (p, &icnt, &expr1, | |
ca4e0257 | 5498 | HAVE_32BIT_ADDRESSES ? "addiu" : "daddiu", |
252b5132 RH |
5499 | "t,r,j", tempreg, tempreg, (int) BFD_RELOC_LO16); |
5500 | /* FIXME: If add_number is 0, and there was no base | |
f5040a92 AO |
5501 | register, the external symbol case ended with a load, |
5502 | so if the symbol turns out to not be external, and | |
5503 | the next instruction uses tempreg, an unnecessary nop | |
5504 | will be inserted. */ | |
252b5132 RH |
5505 | } |
5506 | else | |
5507 | { | |
5508 | if (breg == treg) | |
5509 | { | |
5510 | /* We must add in the base register now, as in the | |
f5040a92 | 5511 | external symbol case. */ |
252b5132 RH |
5512 | assert (tempreg == AT); |
5513 | macro_build (p, &icnt, (expressionS *) NULL, "nop", ""); | |
5514 | p += 4; | |
5515 | macro_build (p, &icnt, (expressionS *) NULL, | |
ca4e0257 | 5516 | HAVE_32BIT_ADDRESSES ? "addu" : "daddu", |
252b5132 RH |
5517 | "d,v,t", treg, AT, breg); |
5518 | p += 4; | |
5519 | tempreg = treg; | |
5520 | /* We set breg to 0 because we have arranged to add | |
f5040a92 | 5521 | it in in both cases. */ |
252b5132 RH |
5522 | breg = 0; |
5523 | } | |
5524 | ||
5525 | macro_build_lui (p, &icnt, &expr1, AT); | |
5526 | p += 4; | |
5527 | macro_build (p, &icnt, &expr1, | |
ca4e0257 | 5528 | HAVE_32BIT_ADDRESSES ? "addiu" : "daddiu", |
252b5132 RH |
5529 | "t,r,j", AT, AT, (int) BFD_RELOC_LO16); |
5530 | p += 4; | |
5531 | macro_build (p, &icnt, (expressionS *) NULL, | |
ca4e0257 | 5532 | HAVE_32BIT_ADDRESSES ? "addu" : "daddu", |
252b5132 RH |
5533 | "d,v,t", tempreg, tempreg, AT); |
5534 | p += 4; | |
5535 | } | |
5536 | } | |
f5040a92 AO |
5537 | else if (mips_pic == SVR4_PIC && HAVE_NEWABI) |
5538 | { | |
5539 | char *p = NULL; | |
5540 | int lui_reloc_type = (int) BFD_RELOC_MIPS_GOT_HI16; | |
5541 | int lw_reloc_type = (int) BFD_RELOC_MIPS_GOT_LO16; | |
5542 | int adj = 0; | |
5543 | ||
5544 | /* This is the large GOT case. If this is a reference to an | |
5545 | external symbol, and there is no constant, we want | |
5546 | lui $tempreg,<sym> (BFD_RELOC_MIPS_GOT_HI16) | |
5547 | add $tempreg,$tempreg,$gp | |
5548 | lw $tempreg,<sym>($tempreg) (BFD_RELOC_MIPS_GOT_LO16) | |
5549 | or if tempreg is PIC_CALL_REG | |
5550 | lui $tempreg,<sym> (BFD_RELOC_MIPS_CALL_HI16) | |
5551 | add $tempreg,$tempreg,$gp | |
5552 | lw $tempreg,<sym>($tempreg) (BFD_RELOC_MIPS_CALL_LO16) | |
5553 | ||
5554 | If we have a small constant, and this is a reference to | |
5555 | an external symbol, we want | |
5556 | lui $tempreg,<sym> (BFD_RELOC_MIPS_GOT_HI16) | |
5557 | add $tempreg,$tempreg,$gp | |
5558 | lw $tempreg,<sym>($tempreg) (BFD_RELOC_MIPS_GOT_LO16) | |
5559 | addi $tempreg,$tempreg,<constant> | |
5560 | ||
5561 | If we have a large constant, and this is a reference to | |
5562 | an external symbol, we want | |
5563 | lui $tempreg,<sym> (BFD_RELOC_MIPS_GOT_HI16) | |
5564 | addu $tempreg,$tempreg,$gp | |
5565 | lw $tempreg,<sym>($tempreg) (BFD_RELOC_MIPS_GOT_LO16) | |
5566 | lui $at,<hiconstant> | |
5567 | addi $at,$at,<loconstant> | |
5568 | add $tempreg,$tempreg,$at | |
5569 | ||
5570 | If we have NewABI, and we know it's a local symbol, we want | |
5571 | lw $reg,<sym>($gp) (BFD_RELOC_MIPS_GOT_PAGE) | |
5572 | addiu $reg,$reg,<sym> (BFD_RELOC_MIPS_GOT_OFST) | |
5573 | otherwise we have to resort to GOT_HI16/GOT_LO16. */ | |
5574 | ||
5575 | frag_grow (40); | |
5576 | ||
5577 | frag_now->tc_frag_data.tc_fr_offset = | |
5578 | expr1.X_add_number = offset_expr.X_add_number; | |
5579 | offset_expr.X_add_number = 0; | |
5580 | ||
5581 | if (expr1.X_add_number == 0 && tempreg == PIC_CALL_REG) | |
5582 | { | |
5583 | lui_reloc_type = (int) BFD_RELOC_MIPS_CALL_HI16; | |
5584 | lw_reloc_type = (int) BFD_RELOC_MIPS_CALL_LO16; | |
5585 | } | |
5586 | macro_build ((char *) NULL, &icnt, &offset_expr, "lui", "t,u", | |
5587 | tempreg, lui_reloc_type); | |
5588 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, | |
5589 | HAVE_32BIT_ADDRESSES ? "add" : "daddu", | |
5590 | "d,v,t", tempreg, tempreg, mips_gp_register); | |
5591 | macro_build ((char *) NULL, &icnt, &offset_expr, | |
5592 | HAVE_32BIT_ADDRESSES ? "lw" : "ld", | |
5593 | "t,o(b)", tempreg, lw_reloc_type, tempreg); | |
5594 | ||
5595 | if (expr1.X_add_number == 0) | |
5596 | { | |
5597 | p = frag_var (rs_machine_dependent, 8, 0, | |
5598 | RELAX_ENCODE (12, 8, 0, 4, 0, | |
5599 | mips_opts.warn_about_macros), | |
5600 | offset_expr.X_add_symbol, 0, NULL); | |
684022ea | 5601 | } |
f5040a92 AO |
5602 | else if (expr1.X_add_number >= -0x8000 |
5603 | && expr1.X_add_number < 0x8000) | |
5604 | { | |
5605 | macro_build ((char *) NULL, &icnt, &expr1, | |
5606 | HAVE_32BIT_ADDRESSES ? "addi" : "daddiu", | |
5607 | "t,r,j", tempreg, tempreg, | |
5608 | (int) BFD_RELOC_LO16); | |
5609 | p = frag_var (rs_machine_dependent, 8, 0, | |
5610 | RELAX_ENCODE (16, 8, 0, 4, 0, | |
5611 | mips_opts.warn_about_macros), | |
5612 | offset_expr.X_add_symbol, 0, NULL); | |
5613 | } | |
5614 | else if (IS_SEXT_32BIT_NUM (expr1.X_add_number)) | |
5615 | { | |
5616 | int dreg; | |
5617 | ||
5618 | /* If we are going to add in a base register, and the | |
5619 | target register and the base register are the same, | |
5620 | then we are using AT as a temporary register. Since | |
5621 | we want to load the constant into AT, we add our | |
5622 | current AT (from the global offset table) and the | |
5623 | register into the register now, and pretend we were | |
5624 | not using a base register. */ | |
5625 | if (breg != treg) | |
5626 | dreg = tempreg; | |
5627 | else | |
5628 | { | |
5629 | assert (tempreg == AT); | |
5630 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, | |
5631 | HAVE_32BIT_ADDRESSES ? "add" : "daddu", | |
5632 | "d,v,t", treg, AT, breg); | |
5633 | dreg = treg; | |
5634 | adj = 4; | |
5635 | } | |
5636 | ||
5637 | /* Set mips_optimize around the lui instruction to avoid | |
5638 | inserting an unnecessary nop after the lw. */ | |
5639 | macro_build_lui ((char *) NULL, &icnt, &expr1, AT); | |
5640 | macro_build ((char *) NULL, &icnt, &expr1, | |
5641 | HAVE_32BIT_ADDRESSES ? "addi" : "daddiu", | |
5642 | "t,r,j", AT, AT, (int) BFD_RELOC_LO16); | |
5643 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, | |
5644 | HAVE_32BIT_ADDRESSES ? "add" : "daddu", | |
5645 | "d,v,t", dreg, dreg, AT); | |
5646 | ||
5647 | p = frag_var (rs_machine_dependent, 8 + adj, 0, | |
5648 | RELAX_ENCODE (24 + adj, 8 + adj, | |
5649 | 0, 4, 0, | |
5650 | (breg == 0 | |
5651 | ? mips_opts.warn_about_macros | |
5652 | : 0)), | |
5653 | offset_expr.X_add_symbol, 0, NULL); | |
5654 | ||
5655 | used_at = 1; | |
5656 | } | |
5657 | else | |
5658 | as_bad (_("PIC code offset overflow (max 32 signed bits)")); | |
5659 | ||
5660 | offset_expr.X_add_number = expr1.X_add_number; | |
5661 | macro_build (p, &icnt, &offset_expr, | |
5662 | HAVE_32BIT_ADDRESSES ? "lw" : "ld", "t,o(b)", | |
5663 | tempreg, | |
5664 | (int) BFD_RELOC_MIPS_GOT_PAGE, mips_gp_register); | |
5665 | macro_build (p + 4, &icnt, &offset_expr, | |
5666 | HAVE_32BIT_ADDRESSES ? "addi" : "daddiu", "t,r,j", | |
5667 | tempreg, tempreg, (int) BFD_RELOC_MIPS_GOT_OFST); | |
5668 | if (adj) | |
5669 | { | |
5670 | macro_build (p + 8, &icnt, (expressionS *) NULL, | |
5671 | HAVE_32BIT_ADDRESSES ? "add" : "daddu", | |
5672 | "d,v,t", treg, tempreg, breg); | |
5673 | breg = 0; | |
5674 | tempreg = treg; | |
5675 | } | |
5676 | } | |
252b5132 RH |
5677 | else if (mips_pic == EMBEDDED_PIC) |
5678 | { | |
5679 | /* We use | |
cdf6fd85 | 5680 | addiu $tempreg,$gp,<sym> (BFD_RELOC_GPREL16) |
252b5132 RH |
5681 | */ |
5682 | macro_build ((char *) NULL, &icnt, &offset_expr, | |
c9914766 TS |
5683 | HAVE_32BIT_ADDRESSES ? "addiu" : "daddiu", "t,r,j", |
5684 | tempreg, mips_gp_register, (int) BFD_RELOC_GPREL16); | |
252b5132 RH |
5685 | } |
5686 | else | |
5687 | abort (); | |
5688 | ||
5689 | if (breg != 0) | |
4d34fb5f TS |
5690 | { |
5691 | char *s; | |
5692 | ||
5693 | if (mips_pic == EMBEDDED_PIC || mips_pic == NO_PIC) | |
f5040a92 AO |
5694 | s = (dbl || HAVE_64BIT_ADDRESSES) ? "daddu" : |
5695 | HAVE_NEWABI ? "add" : "addu"; | |
4d34fb5f | 5696 | else |
f5040a92 | 5697 | s = HAVE_64BIT_ADDRESSES ? "daddu" : HAVE_NEWABI ? "add" : "addu"; |
4d34fb5f TS |
5698 | |
5699 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, s, | |
5700 | "d,v,t", treg, tempreg, breg); | |
5701 | } | |
252b5132 RH |
5702 | |
5703 | if (! used_at) | |
5704 | return; | |
5705 | ||
5706 | break; | |
5707 | ||
5708 | case M_J_A: | |
5709 | /* The j instruction may not be used in PIC code, since it | |
5710 | requires an absolute address. We convert it to a b | |
5711 | instruction. */ | |
5712 | if (mips_pic == NO_PIC) | |
5713 | macro_build ((char *) NULL, &icnt, &offset_expr, "j", "a"); | |
5714 | else | |
5715 | macro_build ((char *) NULL, &icnt, &offset_expr, "b", "p"); | |
5716 | return; | |
5717 | ||
5718 | /* The jal instructions must be handled as macros because when | |
5719 | generating PIC code they expand to multi-instruction | |
5720 | sequences. Normally they are simple instructions. */ | |
5721 | case M_JAL_1: | |
5722 | dreg = RA; | |
5723 | /* Fall through. */ | |
5724 | case M_JAL_2: | |
5725 | if (mips_pic == NO_PIC | |
5726 | || mips_pic == EMBEDDED_PIC) | |
5727 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "jalr", | |
5728 | "d,s", dreg, sreg); | |
5729 | else if (mips_pic == SVR4_PIC) | |
5730 | { | |
5731 | if (sreg != PIC_CALL_REG) | |
5732 | as_warn (_("MIPS PIC call to register other than $25")); | |
bdaaa2e1 | 5733 | |
252b5132 RH |
5734 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "jalr", |
5735 | "d,s", dreg, sreg); | |
6478892d | 5736 | if (! HAVE_NEWABI) |
252b5132 | 5737 | { |
6478892d TS |
5738 | if (mips_cprestore_offset < 0) |
5739 | as_warn (_("No .cprestore pseudo-op used in PIC code")); | |
5740 | else | |
5741 | { | |
7a621144 DJ |
5742 | if (! mips_frame_reg_valid) |
5743 | { | |
5744 | as_warn (_("No .frame pseudo-op used in PIC code")); | |
5745 | /* Quiet this warning. */ | |
5746 | mips_frame_reg_valid = 1; | |
5747 | } | |
5748 | if (! mips_cprestore_valid) | |
5749 | { | |
5750 | as_warn (_("No .cprestore pseudo-op used in PIC code")); | |
5751 | /* Quiet this warning. */ | |
5752 | mips_cprestore_valid = 1; | |
5753 | } | |
6478892d | 5754 | expr1.X_add_number = mips_cprestore_offset; |
885add95 CD |
5755 | macro_build_ldst_constoffset ((char *) NULL, &icnt, &expr1, |
5756 | HAVE_32BIT_ADDRESSES ? "lw" : "ld", | |
5757 | mips_gp_register, mips_frame_reg); | |
6478892d | 5758 | } |
252b5132 RH |
5759 | } |
5760 | } | |
5761 | else | |
5762 | abort (); | |
5763 | ||
5764 | return; | |
5765 | ||
5766 | case M_JAL_A: | |
5767 | if (mips_pic == NO_PIC) | |
5768 | macro_build ((char *) NULL, &icnt, &offset_expr, "jal", "a"); | |
5769 | else if (mips_pic == SVR4_PIC) | |
5770 | { | |
f9419b05 TS |
5771 | char *p; |
5772 | ||
252b5132 RH |
5773 | /* If this is a reference to an external symbol, and we are |
5774 | using a small GOT, we want | |
5775 | lw $25,<sym>($gp) (BFD_RELOC_MIPS_CALL16) | |
5776 | nop | |
f9419b05 | 5777 | jalr $ra,$25 |
252b5132 RH |
5778 | nop |
5779 | lw $gp,cprestore($sp) | |
5780 | The cprestore value is set using the .cprestore | |
5781 | pseudo-op. If we are using a big GOT, we want | |
5782 | lui $25,<sym> (BFD_RELOC_MIPS_CALL_HI16) | |
5783 | addu $25,$25,$gp | |
5784 | lw $25,<sym>($25) (BFD_RELOC_MIPS_CALL_LO16) | |
5785 | nop | |
f9419b05 | 5786 | jalr $ra,$25 |
252b5132 RH |
5787 | nop |
5788 | lw $gp,cprestore($sp) | |
5789 | If the symbol is not external, we want | |
5790 | lw $25,<sym>($gp) (BFD_RELOC_MIPS_GOT16) | |
5791 | nop | |
5792 | addiu $25,$25,<sym> (BFD_RELOC_LO16) | |
f9419b05 | 5793 | jalr $ra,$25 |
252b5132 | 5794 | nop |
438c16b8 | 5795 | lw $gp,cprestore($sp) |
f5040a92 AO |
5796 | |
5797 | For NewABI, we use the same CALL16 or CALL_HI16/CALL_LO16 | |
5798 | sequences above, minus nops, unless the symbol is local, | |
5799 | which enables us to use GOT_PAGE/GOT_OFST (big got) or | |
5800 | GOT_DISP. */ | |
438c16b8 | 5801 | if (HAVE_NEWABI) |
252b5132 | 5802 | { |
f5040a92 AO |
5803 | if (! mips_big_got) |
5804 | { | |
5805 | frag_grow (4); | |
5806 | macro_build ((char *) NULL, &icnt, &offset_expr, | |
5807 | HAVE_32BIT_ADDRESSES ? "lw" : "ld", | |
5808 | "t,o(b)", PIC_CALL_REG, | |
5809 | (int) BFD_RELOC_MIPS_CALL16, | |
5810 | mips_gp_register); | |
5811 | frag_var (rs_machine_dependent, 0, 0, | |
5812 | RELAX_ENCODE (0, 0, -4, 0, 0, 0), | |
5813 | offset_expr.X_add_symbol, 0, NULL); | |
5814 | } | |
5815 | else | |
5816 | { | |
5817 | frag_grow (20); | |
5818 | macro_build ((char *) NULL, &icnt, &offset_expr, "lui", | |
5819 | "t,u", PIC_CALL_REG, | |
5820 | (int) BFD_RELOC_MIPS_CALL_HI16); | |
5821 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, | |
5822 | HAVE_32BIT_ADDRESSES ? "add" : "daddu", | |
5823 | "d,v,t", PIC_CALL_REG, PIC_CALL_REG, | |
5824 | mips_gp_register); | |
5825 | macro_build ((char *) NULL, &icnt, &offset_expr, | |
5826 | HAVE_32BIT_ADDRESSES ? "lw" : "ld", | |
5827 | "t,o(b)", PIC_CALL_REG, | |
5828 | (int) BFD_RELOC_MIPS_CALL_LO16, PIC_CALL_REG); | |
5829 | p = frag_var (rs_machine_dependent, 8, 0, | |
5830 | RELAX_ENCODE (12, 8, 0, 4, 0, 0), | |
5831 | offset_expr.X_add_symbol, 0, NULL); | |
5832 | macro_build (p, &icnt, &offset_expr, | |
5833 | HAVE_32BIT_ADDRESSES ? "lw" : "ld", "t,o(b)", | |
5834 | tempreg, (int) BFD_RELOC_MIPS_GOT_PAGE, | |
5835 | mips_gp_register); | |
5836 | macro_build (p + 4, &icnt, &offset_expr, | |
5837 | HAVE_32BIT_ADDRESSES ? "addi" : "daddiu", | |
5838 | "t,r,j", tempreg, tempreg, | |
5839 | (int) BFD_RELOC_MIPS_GOT_OFST); | |
5840 | } | |
684022ea | 5841 | |
438c16b8 | 5842 | macro_build_jalr (icnt, &offset_expr); |
252b5132 RH |
5843 | } |
5844 | else | |
5845 | { | |
438c16b8 TS |
5846 | frag_grow (40); |
5847 | if (! mips_big_got) | |
5848 | { | |
5849 | macro_build ((char *) NULL, &icnt, &offset_expr, | |
5850 | HAVE_32BIT_ADDRESSES ? "lw" : "ld", | |
5851 | "t,o(b)", PIC_CALL_REG, | |
5852 | (int) BFD_RELOC_MIPS_CALL16, mips_gp_register); | |
5853 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, | |
5854 | "nop", ""); | |
5855 | p = frag_var (rs_machine_dependent, 4, 0, | |
5856 | RELAX_ENCODE (0, 4, -8, 0, 0, 0), | |
5857 | offset_expr.X_add_symbol, 0, NULL); | |
5858 | } | |
252b5132 | 5859 | else |
252b5132 | 5860 | { |
438c16b8 TS |
5861 | int gpdel; |
5862 | ||
5863 | if (reg_needs_delay (mips_gp_register)) | |
5864 | gpdel = 4; | |
5865 | else | |
5866 | gpdel = 0; | |
5867 | macro_build ((char *) NULL, &icnt, &offset_expr, "lui", | |
5868 | "t,u", PIC_CALL_REG, | |
5869 | (int) BFD_RELOC_MIPS_CALL_HI16); | |
5870 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, | |
5871 | HAVE_32BIT_ADDRESSES ? "addu" : "daddu", | |
5872 | "d,v,t", PIC_CALL_REG, PIC_CALL_REG, | |
5873 | mips_gp_register); | |
5874 | macro_build ((char *) NULL, &icnt, &offset_expr, | |
5875 | HAVE_32BIT_ADDRESSES ? "lw" : "ld", | |
5876 | "t,o(b)", PIC_CALL_REG, | |
5877 | (int) BFD_RELOC_MIPS_CALL_LO16, PIC_CALL_REG); | |
5878 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, | |
5879 | "nop", ""); | |
5880 | p = frag_var (rs_machine_dependent, 12 + gpdel, 0, | |
5881 | RELAX_ENCODE (16, 12 + gpdel, gpdel, | |
5882 | 8 + gpdel, 0, 0), | |
5883 | offset_expr.X_add_symbol, 0, NULL); | |
5884 | if (gpdel > 0) | |
5885 | { | |
5886 | macro_build (p, &icnt, (expressionS *) NULL, "nop", ""); | |
5887 | p += 4; | |
5888 | } | |
5889 | macro_build (p, &icnt, &offset_expr, | |
5890 | HAVE_32BIT_ADDRESSES ? "lw" : "ld", | |
5891 | "t,o(b)", PIC_CALL_REG, | |
5892 | (int) BFD_RELOC_MIPS_GOT16, mips_gp_register); | |
5893 | p += 4; | |
252b5132 RH |
5894 | macro_build (p, &icnt, (expressionS *) NULL, "nop", ""); |
5895 | p += 4; | |
5896 | } | |
5897 | macro_build (p, &icnt, &offset_expr, | |
438c16b8 TS |
5898 | HAVE_32BIT_ADDRESSES ? "addiu" : "daddiu", |
5899 | "t,r,j", PIC_CALL_REG, PIC_CALL_REG, | |
5900 | (int) BFD_RELOC_LO16); | |
5901 | macro_build_jalr (icnt, &offset_expr); | |
5902 | ||
6478892d TS |
5903 | if (mips_cprestore_offset < 0) |
5904 | as_warn (_("No .cprestore pseudo-op used in PIC code")); | |
5905 | else | |
5906 | { | |
7a621144 DJ |
5907 | if (! mips_frame_reg_valid) |
5908 | { | |
5909 | as_warn (_("No .frame pseudo-op used in PIC code")); | |
5910 | /* Quiet this warning. */ | |
5911 | mips_frame_reg_valid = 1; | |
5912 | } | |
5913 | if (! mips_cprestore_valid) | |
5914 | { | |
5915 | as_warn (_("No .cprestore pseudo-op used in PIC code")); | |
5916 | /* Quiet this warning. */ | |
5917 | mips_cprestore_valid = 1; | |
5918 | } | |
6478892d TS |
5919 | if (mips_opts.noreorder) |
5920 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, | |
98d3f06f | 5921 | "nop", ""); |
6478892d | 5922 | expr1.X_add_number = mips_cprestore_offset; |
885add95 CD |
5923 | macro_build_ldst_constoffset ((char *) NULL, &icnt, &expr1, |
5924 | HAVE_32BIT_ADDRESSES ? "lw" : "ld", | |
5925 | mips_gp_register, mips_frame_reg); | |
6478892d | 5926 | } |
252b5132 RH |
5927 | } |
5928 | } | |
5929 | else if (mips_pic == EMBEDDED_PIC) | |
5930 | { | |
5931 | macro_build ((char *) NULL, &icnt, &offset_expr, "bal", "p"); | |
5932 | /* The linker may expand the call to a longer sequence which | |
5933 | uses $at, so we must break rather than return. */ | |
5934 | break; | |
5935 | } | |
5936 | else | |
5937 | abort (); | |
5938 | ||
5939 | return; | |
5940 | ||
5941 | case M_LB_AB: | |
5942 | s = "lb"; | |
5943 | goto ld; | |
5944 | case M_LBU_AB: | |
5945 | s = "lbu"; | |
5946 | goto ld; | |
5947 | case M_LH_AB: | |
5948 | s = "lh"; | |
5949 | goto ld; | |
5950 | case M_LHU_AB: | |
5951 | s = "lhu"; | |
5952 | goto ld; | |
5953 | case M_LW_AB: | |
5954 | s = "lw"; | |
5955 | goto ld; | |
5956 | case M_LWC0_AB: | |
5957 | s = "lwc0"; | |
bdaaa2e1 | 5958 | /* Itbl support may require additional care here. */ |
252b5132 RH |
5959 | coproc = 1; |
5960 | goto ld; | |
5961 | case M_LWC1_AB: | |
5962 | s = "lwc1"; | |
bdaaa2e1 | 5963 | /* Itbl support may require additional care here. */ |
252b5132 RH |
5964 | coproc = 1; |
5965 | goto ld; | |
5966 | case M_LWC2_AB: | |
5967 | s = "lwc2"; | |
bdaaa2e1 | 5968 | /* Itbl support may require additional care here. */ |
252b5132 RH |
5969 | coproc = 1; |
5970 | goto ld; | |
5971 | case M_LWC3_AB: | |
5972 | s = "lwc3"; | |
bdaaa2e1 | 5973 | /* Itbl support may require additional care here. */ |
252b5132 RH |
5974 | coproc = 1; |
5975 | goto ld; | |
5976 | case M_LWL_AB: | |
5977 | s = "lwl"; | |
5978 | lr = 1; | |
5979 | goto ld; | |
5980 | case M_LWR_AB: | |
5981 | s = "lwr"; | |
5982 | lr = 1; | |
5983 | goto ld; | |
5984 | case M_LDC1_AB: | |
ec68c924 | 5985 | if (mips_arch == CPU_R4650) |
252b5132 RH |
5986 | { |
5987 | as_bad (_("opcode not supported on this processor")); | |
5988 | return; | |
5989 | } | |
5990 | s = "ldc1"; | |
bdaaa2e1 | 5991 | /* Itbl support may require additional care here. */ |
252b5132 RH |
5992 | coproc = 1; |
5993 | goto ld; | |
5994 | case M_LDC2_AB: | |
5995 | s = "ldc2"; | |
bdaaa2e1 | 5996 | /* Itbl support may require additional care here. */ |
252b5132 RH |
5997 | coproc = 1; |
5998 | goto ld; | |
5999 | case M_LDC3_AB: | |
6000 | s = "ldc3"; | |
bdaaa2e1 | 6001 | /* Itbl support may require additional care here. */ |
252b5132 RH |
6002 | coproc = 1; |
6003 | goto ld; | |
6004 | case M_LDL_AB: | |
6005 | s = "ldl"; | |
6006 | lr = 1; | |
6007 | goto ld; | |
6008 | case M_LDR_AB: | |
6009 | s = "ldr"; | |
6010 | lr = 1; | |
6011 | goto ld; | |
6012 | case M_LL_AB: | |
6013 | s = "ll"; | |
6014 | goto ld; | |
6015 | case M_LLD_AB: | |
6016 | s = "lld"; | |
6017 | goto ld; | |
6018 | case M_LWU_AB: | |
6019 | s = "lwu"; | |
6020 | ld: | |
6021 | if (breg == treg || coproc || lr) | |
6022 | { | |
6023 | tempreg = AT; | |
6024 | used_at = 1; | |
6025 | } | |
6026 | else | |
6027 | { | |
6028 | tempreg = treg; | |
6029 | used_at = 0; | |
6030 | } | |
6031 | goto ld_st; | |
6032 | case M_SB_AB: | |
6033 | s = "sb"; | |
6034 | goto st; | |
6035 | case M_SH_AB: | |
6036 | s = "sh"; | |
6037 | goto st; | |
6038 | case M_SW_AB: | |
6039 | s = "sw"; | |
6040 | goto st; | |
6041 | case M_SWC0_AB: | |
6042 | s = "swc0"; | |
bdaaa2e1 | 6043 | /* Itbl support may require additional care here. */ |
252b5132 RH |
6044 | coproc = 1; |
6045 | goto st; | |
6046 | case M_SWC1_AB: | |
6047 | s = "swc1"; | |
bdaaa2e1 | 6048 | /* Itbl support may require additional care here. */ |
252b5132 RH |
6049 | coproc = 1; |
6050 | goto st; | |
6051 | case M_SWC2_AB: | |
6052 | s = "swc2"; | |
bdaaa2e1 | 6053 | /* Itbl support may require additional care here. */ |
252b5132 RH |
6054 | coproc = 1; |
6055 | goto st; | |
6056 | case M_SWC3_AB: | |
6057 | s = "swc3"; | |
bdaaa2e1 | 6058 | /* Itbl support may require additional care here. */ |
252b5132 RH |
6059 | coproc = 1; |
6060 | goto st; | |
6061 | case M_SWL_AB: | |
6062 | s = "swl"; | |
6063 | goto st; | |
6064 | case M_SWR_AB: | |
6065 | s = "swr"; | |
6066 | goto st; | |
6067 | case M_SC_AB: | |
6068 | s = "sc"; | |
6069 | goto st; | |
6070 | case M_SCD_AB: | |
6071 | s = "scd"; | |
6072 | goto st; | |
6073 | case M_SDC1_AB: | |
ec68c924 | 6074 | if (mips_arch == CPU_R4650) |
252b5132 RH |
6075 | { |
6076 | as_bad (_("opcode not supported on this processor")); | |
6077 | return; | |
6078 | } | |
6079 | s = "sdc1"; | |
6080 | coproc = 1; | |
bdaaa2e1 | 6081 | /* Itbl support may require additional care here. */ |
252b5132 RH |
6082 | goto st; |
6083 | case M_SDC2_AB: | |
6084 | s = "sdc2"; | |
bdaaa2e1 | 6085 | /* Itbl support may require additional care here. */ |
252b5132 RH |
6086 | coproc = 1; |
6087 | goto st; | |
6088 | case M_SDC3_AB: | |
6089 | s = "sdc3"; | |
bdaaa2e1 | 6090 | /* Itbl support may require additional care here. */ |
252b5132 RH |
6091 | coproc = 1; |
6092 | goto st; | |
6093 | case M_SDL_AB: | |
6094 | s = "sdl"; | |
6095 | goto st; | |
6096 | case M_SDR_AB: | |
6097 | s = "sdr"; | |
6098 | st: | |
6099 | tempreg = AT; | |
6100 | used_at = 1; | |
6101 | ld_st: | |
bdaaa2e1 | 6102 | /* Itbl support may require additional care here. */ |
252b5132 RH |
6103 | if (mask == M_LWC1_AB |
6104 | || mask == M_SWC1_AB | |
6105 | || mask == M_LDC1_AB | |
6106 | || mask == M_SDC1_AB | |
6107 | || mask == M_L_DAB | |
6108 | || mask == M_S_DAB) | |
6109 | fmt = "T,o(b)"; | |
6110 | else if (coproc) | |
6111 | fmt = "E,o(b)"; | |
6112 | else | |
6113 | fmt = "t,o(b)"; | |
6114 | ||
afdbd6d0 CD |
6115 | /* For embedded PIC, we allow loads where the offset is calculated |
6116 | by subtracting a symbol in the current segment from an unknown | |
6117 | symbol, relative to a base register, e.g.: | |
6118 | <op> $treg, <sym>-<localsym>($breg) | |
6119 | This is used by the compiler for switch statements. */ | |
76b3015f | 6120 | if (mips_pic == EMBEDDED_PIC |
afdbd6d0 CD |
6121 | && offset_expr.X_op == O_subtract |
6122 | && (symbol_constant_p (offset_expr.X_op_symbol) | |
6123 | ? S_GET_SEGMENT (offset_expr.X_op_symbol) == now_seg | |
6124 | : (symbol_equated_p (offset_expr.X_op_symbol) | |
6125 | && (S_GET_SEGMENT | |
6126 | (symbol_get_value_expression (offset_expr.X_op_symbol) | |
6127 | ->X_add_symbol) | |
6128 | == now_seg))) | |
6129 | && breg != 0 | |
6130 | && (offset_expr.X_add_number == 0 | |
6131 | || OUTPUT_FLAVOR == bfd_target_elf_flavour)) | |
6132 | { | |
6133 | /* For this case, we output the instructions: | |
6134 | lui $tempreg,<sym> (BFD_RELOC_PCREL_HI16_S) | |
6135 | addiu $tempreg,$tempreg,$breg | |
6136 | <op> $treg,<sym>($tempreg) (BFD_RELOC_PCREL_LO16) | |
6137 | If the relocation would fit entirely in 16 bits, it would be | |
6138 | nice to emit: | |
6139 | <op> $treg,<sym>($breg) (BFD_RELOC_PCREL_LO16) | |
6140 | instead, but that seems quite difficult. */ | |
6141 | macro_build ((char *) NULL, &icnt, &offset_expr, "lui", "t,u", | |
6142 | tempreg, (int) BFD_RELOC_PCREL_HI16_S); | |
6143 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, | |
6144 | ((bfd_arch_bits_per_address (stdoutput) == 32 | |
6145 | || ! ISA_HAS_64BIT_REGS (mips_opts.isa)) | |
f5040a92 | 6146 | ? HAVE_NEWABI ? "add" : "addu" : "daddu"), |
afdbd6d0 CD |
6147 | "d,v,t", tempreg, tempreg, breg); |
6148 | macro_build ((char *) NULL, &icnt, &offset_expr, s, fmt, treg, | |
6149 | (int) BFD_RELOC_PCREL_LO16, tempreg); | |
6150 | if (! used_at) | |
6151 | return; | |
6152 | break; | |
6153 | } | |
6154 | ||
252b5132 RH |
6155 | if (offset_expr.X_op != O_constant |
6156 | && offset_expr.X_op != O_symbol) | |
6157 | { | |
6158 | as_bad (_("expression too complex")); | |
6159 | offset_expr.X_op = O_constant; | |
6160 | } | |
6161 | ||
6162 | /* A constant expression in PIC code can be handled just as it | |
6163 | is in non PIC code. */ | |
6164 | if (mips_pic == NO_PIC | |
6165 | || offset_expr.X_op == O_constant) | |
6166 | { | |
f9419b05 TS |
6167 | char *p; |
6168 | ||
252b5132 RH |
6169 | /* If this is a reference to a GP relative symbol, and there |
6170 | is no base register, we want | |
cdf6fd85 | 6171 | <op> $treg,<sym>($gp) (BFD_RELOC_GPREL16) |
252b5132 RH |
6172 | Otherwise, if there is no base register, we want |
6173 | lui $tempreg,<sym> (BFD_RELOC_HI16_S) | |
6174 | <op> $treg,<sym>($tempreg) (BFD_RELOC_LO16) | |
6175 | If we have a constant, we need two instructions anyhow, | |
6176 | so we always use the latter form. | |
6177 | ||
6178 | If we have a base register, and this is a reference to a | |
6179 | GP relative symbol, we want | |
6180 | addu $tempreg,$breg,$gp | |
cdf6fd85 | 6181 | <op> $treg,<sym>($tempreg) (BFD_RELOC_GPREL16) |
252b5132 RH |
6182 | Otherwise we want |
6183 | lui $tempreg,<sym> (BFD_RELOC_HI16_S) | |
6184 | addu $tempreg,$tempreg,$breg | |
6185 | <op> $treg,<sym>($tempreg) (BFD_RELOC_LO16) | |
d6bc6245 | 6186 | With a constant we always use the latter case. |
76b3015f | 6187 | |
d6bc6245 TS |
6188 | With 64bit address space and no base register and $at usable, |
6189 | we want | |
6190 | lui $tempreg,<sym> (BFD_RELOC_MIPS_HIGHEST) | |
6191 | lui $at,<sym> (BFD_RELOC_HI16_S) | |
6192 | daddiu $tempreg,<sym> (BFD_RELOC_MIPS_HIGHER) | |
6193 | dsll32 $tempreg,0 | |
6194 | daddu $tempreg,$at | |
6195 | <op> $treg,<sym>($tempreg) (BFD_RELOC_LO16) | |
6196 | If we have a base register, we want | |
6197 | lui $tempreg,<sym> (BFD_RELOC_MIPS_HIGHEST) | |
6198 | lui $at,<sym> (BFD_RELOC_HI16_S) | |
6199 | daddiu $tempreg,<sym> (BFD_RELOC_MIPS_HIGHER) | |
6200 | daddu $at,$breg | |
6201 | dsll32 $tempreg,0 | |
6202 | daddu $tempreg,$at | |
6203 | <op> $treg,<sym>($tempreg) (BFD_RELOC_LO16) | |
6204 | ||
6205 | Without $at we can't generate the optimal path for superscalar | |
6206 | processors here since this would require two temporary registers. | |
6207 | lui $tempreg,<sym> (BFD_RELOC_MIPS_HIGHEST) | |
6208 | daddiu $tempreg,<sym> (BFD_RELOC_MIPS_HIGHER) | |
6209 | dsll $tempreg,16 | |
6210 | daddiu $tempreg,<sym> (BFD_RELOC_HI16_S) | |
6211 | dsll $tempreg,16 | |
6212 | <op> $treg,<sym>($tempreg) (BFD_RELOC_LO16) | |
6213 | If we have a base register, we want | |
6214 | lui $tempreg,<sym> (BFD_RELOC_MIPS_HIGHEST) | |
6215 | daddiu $tempreg,<sym> (BFD_RELOC_MIPS_HIGHER) | |
6216 | dsll $tempreg,16 | |
6217 | daddiu $tempreg,<sym> (BFD_RELOC_HI16_S) | |
6218 | dsll $tempreg,16 | |
6219 | daddu $tempreg,$tempreg,$breg | |
6220 | <op> $treg,<sym>($tempreg) (BFD_RELOC_LO16) | |
6373ee54 CD |
6221 | |
6222 | If we have 64-bit addresses, as an optimization, for | |
6223 | addresses which are 32-bit constants (e.g. kseg0/kseg1 | |
6224 | addresses) we fall back to the 32-bit address generation | |
78d32a17 MR |
6225 | mechanism since it is more efficient. Note that due to |
6226 | the signed offset used by memory operations, the 32-bit | |
6227 | range is shifted down by 32768 here. This code should | |
6373ee54 CD |
6228 | probably attempt to generate 64-bit constants more |
6229 | efficiently in general. | |
9214dd3b AO |
6230 | |
6231 | As an extension for architectures with 64-bit registers, | |
6232 | we don't truncate 64-bit addresses given as literal | |
6233 | constants down to 32 bits, to support existing practice | |
6234 | in the mips64 Linux (the kernel), that compiles source | |
6235 | files with -mabi=64, assembling them as o32 or n32 (with | |
6236 | -Wa,-32 or -Wa,-n32). This is not beautiful, but since | |
6237 | the whole kernel is loaded into a memory region that is | |
6238 | addressible with sign-extended 32-bit addresses, it is | |
6239 | wasteful to compute the upper 32 bits of every | |
6240 | non-literal address, that takes more space and time. | |
6241 | Some day this should probably be implemented as an | |
6242 | assembler option, such that the kernel doesn't have to | |
6243 | use such ugly hacks, even though it will still have to | |
6244 | end up converting the binary to ELF32 for a number of | |
6245 | platforms whose boot loaders don't support ELF64 | |
6246 | binaries. */ | |
5a7a0b7b AO |
6247 | if ((offset_expr.X_op != O_constant && HAVE_64BIT_ADDRESSES) |
6248 | || (offset_expr.X_op == O_constant | |
eb0a7d52 | 6249 | && !IS_SEXT_32BIT_NUM (offset_expr.X_add_number + 0x8000) |
5a7a0b7b | 6250 | && HAVE_64BIT_ADDRESS_CONSTANTS)) |
d6bc6245 TS |
6251 | { |
6252 | p = NULL; | |
6253 | ||
6254 | /* We don't do GP optimization for now because RELAX_ENCODE can't | |
6255 | hold the data for such large chunks. */ | |
6256 | ||
460597ba | 6257 | if (used_at == 0 && ! mips_opts.noat) |
d6bc6245 TS |
6258 | { |
6259 | macro_build (p, &icnt, &offset_expr, "lui", "t,u", | |
6260 | tempreg, (int) BFD_RELOC_MIPS_HIGHEST); | |
6261 | macro_build (p, &icnt, &offset_expr, "lui", "t,u", | |
6262 | AT, (int) BFD_RELOC_HI16_S); | |
6263 | macro_build (p, &icnt, &offset_expr, "daddiu", "t,r,j", | |
6264 | tempreg, tempreg, (int) BFD_RELOC_MIPS_HIGHER); | |
6265 | if (breg != 0) | |
2396cfb9 TS |
6266 | macro_build (p, &icnt, (expressionS *) NULL, "daddu", |
6267 | "d,v,t", AT, AT, breg); | |
6268 | macro_build (p, &icnt, (expressionS *) NULL, "dsll32", | |
6269 | "d,w,<", tempreg, tempreg, 0); | |
6270 | macro_build (p, &icnt, (expressionS *) NULL, "daddu", | |
6271 | "d,v,t", tempreg, tempreg, AT); | |
d6bc6245 TS |
6272 | macro_build (p, &icnt, &offset_expr, s, |
6273 | fmt, treg, (int) BFD_RELOC_LO16, tempreg); | |
6274 | used_at = 1; | |
6275 | } | |
6276 | else | |
6277 | { | |
6278 | macro_build (p, &icnt, &offset_expr, "lui", "t,u", | |
6279 | tempreg, (int) BFD_RELOC_MIPS_HIGHEST); | |
6280 | macro_build (p, &icnt, &offset_expr, "daddiu", "t,r,j", | |
6281 | tempreg, tempreg, (int) BFD_RELOC_MIPS_HIGHER); | |
2396cfb9 TS |
6282 | macro_build (p, &icnt, (expressionS *) NULL, "dsll", |
6283 | "d,w,<", tempreg, tempreg, 16); | |
d6bc6245 TS |
6284 | macro_build (p, &icnt, &offset_expr, "daddiu", "t,r,j", |
6285 | tempreg, tempreg, (int) BFD_RELOC_HI16_S); | |
2396cfb9 TS |
6286 | macro_build (p, &icnt, (expressionS *) NULL, "dsll", |
6287 | "d,w,<", tempreg, tempreg, 16); | |
d6bc6245 | 6288 | if (breg != 0) |
2396cfb9 TS |
6289 | macro_build (p, &icnt, (expressionS *) NULL, "daddu", |
6290 | "d,v,t", tempreg, tempreg, breg); | |
d6bc6245 TS |
6291 | macro_build (p, &icnt, &offset_expr, s, |
6292 | fmt, treg, (int) BFD_RELOC_LO16, tempreg); | |
6293 | } | |
6294 | ||
6295 | return; | |
6296 | } | |
5a7a0b7b | 6297 | else if (offset_expr.X_op == O_constant |
eb0a7d52 | 6298 | && !HAVE_64BIT_ADDRESS_CONSTANTS |
5a7a0b7b AO |
6299 | && !IS_SEXT_32BIT_NUM (offset_expr.X_add_number)) |
6300 | as_bad (_("load/store address overflow (max 32 bits)")); | |
76b3015f | 6301 | |
252b5132 RH |
6302 | if (breg == 0) |
6303 | { | |
e7d556df | 6304 | if ((valueT) offset_expr.X_add_number > MAX_GPREL_OFFSET |
252b5132 RH |
6305 | || nopic_need_relax (offset_expr.X_add_symbol, 1)) |
6306 | p = NULL; | |
6307 | else | |
6308 | { | |
6309 | frag_grow (20); | |
6310 | macro_build ((char *) NULL, &icnt, &offset_expr, s, fmt, | |
c9914766 TS |
6311 | treg, (int) BFD_RELOC_GPREL16, |
6312 | mips_gp_register); | |
252b5132 RH |
6313 | p = frag_var (rs_machine_dependent, 8, 0, |
6314 | RELAX_ENCODE (4, 8, 0, 4, 0, | |
6315 | (mips_opts.warn_about_macros | |
6316 | || (used_at | |
6317 | && mips_opts.noat))), | |
956cd1d6 | 6318 | offset_expr.X_add_symbol, 0, NULL); |
252b5132 RH |
6319 | used_at = 0; |
6320 | } | |
6321 | macro_build_lui (p, &icnt, &offset_expr, tempreg); | |
6322 | if (p != NULL) | |
6323 | p += 4; | |
6324 | macro_build (p, &icnt, &offset_expr, s, fmt, treg, | |
6325 | (int) BFD_RELOC_LO16, tempreg); | |
6326 | } | |
6327 | else | |
6328 | { | |
e7d556df | 6329 | if ((valueT) offset_expr.X_add_number > MAX_GPREL_OFFSET |
252b5132 RH |
6330 | || nopic_need_relax (offset_expr.X_add_symbol, 1)) |
6331 | p = NULL; | |
6332 | else | |
6333 | { | |
6334 | frag_grow (28); | |
6335 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, | |
f5040a92 AO |
6336 | HAVE_32BIT_ADDRESSES ? HAVE_NEWABI |
6337 | ? "add" : "addu" : "daddu", | |
c9914766 | 6338 | "d,v,t", tempreg, breg, mips_gp_register); |
252b5132 | 6339 | macro_build ((char *) NULL, &icnt, &offset_expr, s, fmt, |
cdf6fd85 | 6340 | treg, (int) BFD_RELOC_GPREL16, tempreg); |
252b5132 RH |
6341 | p = frag_var (rs_machine_dependent, 12, 0, |
6342 | RELAX_ENCODE (8, 12, 0, 8, 0, 0), | |
956cd1d6 | 6343 | offset_expr.X_add_symbol, 0, NULL); |
252b5132 RH |
6344 | } |
6345 | macro_build_lui (p, &icnt, &offset_expr, tempreg); | |
6346 | if (p != NULL) | |
6347 | p += 4; | |
6348 | macro_build (p, &icnt, (expressionS *) NULL, | |
f5040a92 AO |
6349 | HAVE_32BIT_ADDRESSES ? HAVE_NEWABI |
6350 | ? "add" : "addu" : "daddu", | |
252b5132 RH |
6351 | "d,v,t", tempreg, tempreg, breg); |
6352 | if (p != NULL) | |
6353 | p += 4; | |
6354 | macro_build (p, &icnt, &offset_expr, s, fmt, treg, | |
6355 | (int) BFD_RELOC_LO16, tempreg); | |
6356 | } | |
6357 | } | |
6358 | else if (mips_pic == SVR4_PIC && ! mips_big_got) | |
6359 | { | |
f9419b05 | 6360 | char *p; |
ed6fb7bd | 6361 | int lw_reloc_type = (int) BFD_RELOC_MIPS_GOT16; |
f9419b05 | 6362 | |
252b5132 RH |
6363 | /* If this is a reference to an external symbol, we want |
6364 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_GOT16) | |
6365 | nop | |
6366 | <op> $treg,0($tempreg) | |
6367 | Otherwise we want | |
6368 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_GOT16) | |
6369 | nop | |
6370 | addiu $tempreg,$tempreg,<sym> (BFD_RELOC_LO16) | |
6371 | <op> $treg,0($tempreg) | |
f5040a92 AO |
6372 | |
6373 | For NewABI, we want | |
6374 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_GOT_PAGE) | |
6375 | <op> $treg,<sym>($tempreg) (BFD_RELOC_MIPS_GOT_OFST) | |
6376 | ||
252b5132 RH |
6377 | If there is a base register, we add it to $tempreg before |
6378 | the <op>. If there is a constant, we stick it in the | |
6379 | <op> instruction. We don't handle constants larger than | |
6380 | 16 bits, because we have no way to load the upper 16 bits | |
6381 | (actually, we could handle them for the subset of cases | |
6382 | in which we are not using $at). */ | |
6383 | assert (offset_expr.X_op == O_symbol); | |
f5040a92 AO |
6384 | if (HAVE_NEWABI) |
6385 | { | |
6386 | macro_build ((char *) NULL, &icnt, &offset_expr, | |
6387 | HAVE_32BIT_ADDRESSES ? "lw" : "ld", | |
6388 | "t,o(b)", tempreg, BFD_RELOC_MIPS_GOT_PAGE, | |
6389 | mips_gp_register); | |
6390 | if (breg != 0) | |
6391 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, | |
6392 | HAVE_32BIT_ADDRESSES ? "add" : "daddu", | |
6393 | "d,v,t", tempreg, tempreg, breg); | |
6394 | macro_build ((char *) NULL, &icnt, &offset_expr, s, fmt, treg, | |
6395 | (int) BFD_RELOC_MIPS_GOT_OFST, tempreg); | |
6396 | ||
6397 | if (! used_at) | |
6398 | return; | |
6399 | ||
6400 | break; | |
6401 | } | |
252b5132 RH |
6402 | expr1.X_add_number = offset_expr.X_add_number; |
6403 | offset_expr.X_add_number = 0; | |
6404 | if (expr1.X_add_number < -0x8000 | |
6405 | || expr1.X_add_number >= 0x8000) | |
6406 | as_bad (_("PIC code offset overflow (max 16 signed bits)")); | |
6407 | frag_grow (20); | |
6408 | macro_build ((char *) NULL, &icnt, &offset_expr, | |
c9914766 | 6409 | HAVE_32BIT_ADDRESSES ? "lw" : "ld", "t,o(b)", tempreg, |
ed6fb7bd | 6410 | (int) lw_reloc_type, mips_gp_register); |
252b5132 | 6411 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "nop", ""); |
bdaaa2e1 | 6412 | p = frag_var (rs_machine_dependent, 4, 0, |
252b5132 | 6413 | RELAX_ENCODE (0, 4, -8, 0, 0, 0), |
c4e7957c | 6414 | offset_expr.X_add_symbol, 0, NULL); |
252b5132 | 6415 | macro_build (p, &icnt, &offset_expr, |
ca4e0257 | 6416 | HAVE_32BIT_ADDRESSES ? "addiu" : "daddiu", |
252b5132 RH |
6417 | "t,r,j", tempreg, tempreg, (int) BFD_RELOC_LO16); |
6418 | if (breg != 0) | |
6419 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, | |
ca4e0257 | 6420 | HAVE_32BIT_ADDRESSES ? "addu" : "daddu", |
252b5132 RH |
6421 | "d,v,t", tempreg, tempreg, breg); |
6422 | macro_build ((char *) NULL, &icnt, &expr1, s, fmt, treg, | |
6423 | (int) BFD_RELOC_LO16, tempreg); | |
6424 | } | |
f5040a92 | 6425 | else if (mips_pic == SVR4_PIC && ! HAVE_NEWABI) |
252b5132 RH |
6426 | { |
6427 | int gpdel; | |
f9419b05 | 6428 | char *p; |
252b5132 RH |
6429 | |
6430 | /* If this is a reference to an external symbol, we want | |
6431 | lui $tempreg,<sym> (BFD_RELOC_MIPS_GOT_HI16) | |
6432 | addu $tempreg,$tempreg,$gp | |
6433 | lw $tempreg,<sym>($tempreg) (BFD_RELOC_MIPS_GOT_LO16) | |
6434 | <op> $treg,0($tempreg) | |
6435 | Otherwise we want | |
6436 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_GOT16) | |
6437 | nop | |
6438 | addiu $tempreg,$tempreg,<sym> (BFD_RELOC_LO16) | |
6439 | <op> $treg,0($tempreg) | |
6440 | If there is a base register, we add it to $tempreg before | |
6441 | the <op>. If there is a constant, we stick it in the | |
6442 | <op> instruction. We don't handle constants larger than | |
6443 | 16 bits, because we have no way to load the upper 16 bits | |
6444 | (actually, we could handle them for the subset of cases | |
f5040a92 | 6445 | in which we are not using $at). */ |
252b5132 RH |
6446 | assert (offset_expr.X_op == O_symbol); |
6447 | expr1.X_add_number = offset_expr.X_add_number; | |
6448 | offset_expr.X_add_number = 0; | |
6449 | if (expr1.X_add_number < -0x8000 | |
6450 | || expr1.X_add_number >= 0x8000) | |
6451 | as_bad (_("PIC code offset overflow (max 16 signed bits)")); | |
f7ea7ef2 | 6452 | if (reg_needs_delay (mips_gp_register)) |
252b5132 RH |
6453 | gpdel = 4; |
6454 | else | |
6455 | gpdel = 0; | |
6456 | frag_grow (36); | |
6457 | macro_build ((char *) NULL, &icnt, &offset_expr, "lui", "t,u", | |
6458 | tempreg, (int) BFD_RELOC_MIPS_GOT_HI16); | |
6459 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, | |
ca4e0257 | 6460 | HAVE_32BIT_ADDRESSES ? "addu" : "daddu", |
c9914766 | 6461 | "d,v,t", tempreg, tempreg, mips_gp_register); |
252b5132 | 6462 | macro_build ((char *) NULL, &icnt, &offset_expr, |
ca4e0257 | 6463 | HAVE_32BIT_ADDRESSES ? "lw" : "ld", |
252b5132 RH |
6464 | "t,o(b)", tempreg, (int) BFD_RELOC_MIPS_GOT_LO16, |
6465 | tempreg); | |
6466 | p = frag_var (rs_machine_dependent, 12 + gpdel, 0, | |
6467 | RELAX_ENCODE (12, 12 + gpdel, gpdel, 8 + gpdel, 0, 0), | |
c4e7957c | 6468 | offset_expr.X_add_symbol, 0, NULL); |
252b5132 RH |
6469 | if (gpdel > 0) |
6470 | { | |
6471 | macro_build (p, &icnt, (expressionS *) NULL, "nop", ""); | |
6472 | p += 4; | |
6473 | } | |
6474 | macro_build (p, &icnt, &offset_expr, | |
ca4e0257 | 6475 | HAVE_32BIT_ADDRESSES ? "lw" : "ld", |
c9914766 TS |
6476 | "t,o(b)", tempreg, (int) BFD_RELOC_MIPS_GOT16, |
6477 | mips_gp_register); | |
252b5132 RH |
6478 | p += 4; |
6479 | macro_build (p, &icnt, (expressionS *) NULL, "nop", ""); | |
6480 | p += 4; | |
6481 | macro_build (p, &icnt, &offset_expr, | |
ca4e0257 | 6482 | HAVE_32BIT_ADDRESSES ? "addiu" : "daddiu", |
252b5132 RH |
6483 | "t,r,j", tempreg, tempreg, (int) BFD_RELOC_LO16); |
6484 | if (breg != 0) | |
6485 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, | |
ca4e0257 | 6486 | HAVE_32BIT_ADDRESSES ? "addu" : "daddu", |
252b5132 RH |
6487 | "d,v,t", tempreg, tempreg, breg); |
6488 | macro_build ((char *) NULL, &icnt, &expr1, s, fmt, treg, | |
6489 | (int) BFD_RELOC_LO16, tempreg); | |
6490 | } | |
f5040a92 AO |
6491 | else if (mips_pic == SVR4_PIC && HAVE_NEWABI) |
6492 | { | |
6493 | char *p; | |
6494 | int bregsz = breg != 0 ? 4 : 0; | |
6495 | ||
6496 | /* If this is a reference to an external symbol, we want | |
6497 | lui $tempreg,<sym> (BFD_RELOC_MIPS_GOT_HI16) | |
6498 | add $tempreg,$tempreg,$gp | |
6499 | lw $tempreg,<sym>($tempreg) (BFD_RELOC_MIPS_GOT_LO16) | |
6500 | <op> $treg,<ofst>($tempreg) | |
6501 | Otherwise, for local symbols, we want: | |
6502 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_GOT_PAGE) | |
6503 | <op> $treg,<sym>($tempreg) (BFD_RELOC_MIPS_GOT_OFST) */ | |
6504 | assert (offset_expr.X_op == O_symbol); | |
6505 | frag_now->tc_frag_data.tc_fr_offset = | |
6506 | expr1.X_add_number = offset_expr.X_add_number; | |
6507 | offset_expr.X_add_number = 0; | |
6508 | if (expr1.X_add_number < -0x8000 | |
6509 | || expr1.X_add_number >= 0x8000) | |
6510 | as_bad (_("PIC code offset overflow (max 16 signed bits)")); | |
6511 | frag_grow (36); | |
6512 | macro_build ((char *) NULL, &icnt, &offset_expr, "lui", "t,u", | |
6513 | tempreg, (int) BFD_RELOC_MIPS_GOT_HI16); | |
6514 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, | |
6515 | HAVE_32BIT_ADDRESSES ? "add" : "daddu", | |
6516 | "d,v,t", tempreg, tempreg, mips_gp_register); | |
6517 | macro_build ((char *) NULL, &icnt, &offset_expr, | |
6518 | HAVE_32BIT_ADDRESSES ? "lw" : "ld", | |
6519 | "t,o(b)", tempreg, (int) BFD_RELOC_MIPS_GOT_LO16, | |
6520 | tempreg); | |
6521 | if (breg != 0) | |
6522 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, | |
6523 | HAVE_32BIT_ADDRESSES ? "add" : "daddu", | |
6524 | "d,v,t", tempreg, tempreg, breg); | |
6525 | macro_build ((char *) NULL, &icnt, &expr1, s, fmt, treg, | |
6526 | (int) BFD_RELOC_LO16, tempreg); | |
684022ea | 6527 | |
f5040a92 AO |
6528 | offset_expr.X_add_number = expr1.X_add_number; |
6529 | p = frag_var (rs_machine_dependent, 12 + bregsz, 0, | |
6530 | RELAX_ENCODE (16 + bregsz, 8 + bregsz, | |
6531 | 0, 4 + bregsz, 0, 0), | |
6532 | offset_expr.X_add_symbol, 0, NULL); | |
6533 | macro_build (p, &icnt, &offset_expr, | |
6534 | HAVE_32BIT_ADDRESSES ? "lw" : "ld", | |
6535 | "t,o(b)", tempreg, | |
6536 | (int) BFD_RELOC_MIPS_GOT_PAGE, | |
6537 | mips_gp_register); | |
6538 | if (breg != 0) | |
6539 | macro_build (p + 4, &icnt, (expressionS *) NULL, | |
6540 | HAVE_32BIT_ADDRESSES ? "add" : "daddu", | |
6541 | "d,v,t", tempreg, tempreg, breg); | |
6542 | macro_build (p + 4 + bregsz, &icnt, &offset_expr, s, fmt, treg, | |
6543 | (int) BFD_RELOC_MIPS_GOT_OFST, tempreg); | |
6544 | } | |
252b5132 RH |
6545 | else if (mips_pic == EMBEDDED_PIC) |
6546 | { | |
6547 | /* If there is no base register, we want | |
cdf6fd85 | 6548 | <op> $treg,<sym>($gp) (BFD_RELOC_GPREL16) |
252b5132 RH |
6549 | If there is a base register, we want |
6550 | addu $tempreg,$breg,$gp | |
cdf6fd85 | 6551 | <op> $treg,<sym>($tempreg) (BFD_RELOC_GPREL16) |
252b5132 RH |
6552 | */ |
6553 | assert (offset_expr.X_op == O_symbol); | |
6554 | if (breg == 0) | |
6555 | { | |
6556 | macro_build ((char *) NULL, &icnt, &offset_expr, s, fmt, | |
c9914766 | 6557 | treg, (int) BFD_RELOC_GPREL16, mips_gp_register); |
252b5132 RH |
6558 | used_at = 0; |
6559 | } | |
6560 | else | |
6561 | { | |
6562 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, | |
ca4e0257 | 6563 | HAVE_32BIT_ADDRESSES ? "addu" : "daddu", |
c9914766 | 6564 | "d,v,t", tempreg, breg, mips_gp_register); |
252b5132 | 6565 | macro_build ((char *) NULL, &icnt, &offset_expr, s, fmt, |
cdf6fd85 | 6566 | treg, (int) BFD_RELOC_GPREL16, tempreg); |
252b5132 RH |
6567 | } |
6568 | } | |
6569 | else | |
6570 | abort (); | |
6571 | ||
6572 | if (! used_at) | |
6573 | return; | |
6574 | ||
6575 | break; | |
6576 | ||
6577 | case M_LI: | |
6578 | case M_LI_S: | |
6579 | load_register (&icnt, treg, &imm_expr, 0); | |
6580 | return; | |
6581 | ||
6582 | case M_DLI: | |
6583 | load_register (&icnt, treg, &imm_expr, 1); | |
6584 | return; | |
6585 | ||
6586 | case M_LI_SS: | |
6587 | if (imm_expr.X_op == O_constant) | |
6588 | { | |
6589 | load_register (&icnt, AT, &imm_expr, 0); | |
6590 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, | |
6591 | "mtc1", "t,G", AT, treg); | |
6592 | break; | |
6593 | } | |
6594 | else | |
6595 | { | |
6596 | assert (offset_expr.X_op == O_symbol | |
6597 | && strcmp (segment_name (S_GET_SEGMENT | |
6598 | (offset_expr.X_add_symbol)), | |
6599 | ".lit4") == 0 | |
6600 | && offset_expr.X_add_number == 0); | |
6601 | macro_build ((char *) NULL, &icnt, &offset_expr, "lwc1", "T,o(b)", | |
c9914766 | 6602 | treg, (int) BFD_RELOC_MIPS_LITERAL, mips_gp_register); |
252b5132 RH |
6603 | return; |
6604 | } | |
6605 | ||
6606 | case M_LI_D: | |
ca4e0257 RS |
6607 | /* Check if we have a constant in IMM_EXPR. If the GPRs are 64 bits |
6608 | wide, IMM_EXPR is the entire value. Otherwise IMM_EXPR is the high | |
6609 | order 32 bits of the value and the low order 32 bits are either | |
6610 | zero or in OFFSET_EXPR. */ | |
252b5132 RH |
6611 | if (imm_expr.X_op == O_constant || imm_expr.X_op == O_big) |
6612 | { | |
ca4e0257 | 6613 | if (HAVE_64BIT_GPRS) |
252b5132 RH |
6614 | load_register (&icnt, treg, &imm_expr, 1); |
6615 | else | |
6616 | { | |
6617 | int hreg, lreg; | |
6618 | ||
6619 | if (target_big_endian) | |
6620 | { | |
6621 | hreg = treg; | |
6622 | lreg = treg + 1; | |
6623 | } | |
6624 | else | |
6625 | { | |
6626 | hreg = treg + 1; | |
6627 | lreg = treg; | |
6628 | } | |
6629 | ||
6630 | if (hreg <= 31) | |
6631 | load_register (&icnt, hreg, &imm_expr, 0); | |
6632 | if (lreg <= 31) | |
6633 | { | |
6634 | if (offset_expr.X_op == O_absent) | |
ea1fb5dc | 6635 | move_register (&icnt, lreg, 0); |
252b5132 RH |
6636 | else |
6637 | { | |
6638 | assert (offset_expr.X_op == O_constant); | |
6639 | load_register (&icnt, lreg, &offset_expr, 0); | |
6640 | } | |
6641 | } | |
6642 | } | |
6643 | return; | |
6644 | } | |
6645 | ||
6646 | /* We know that sym is in the .rdata section. First we get the | |
6647 | upper 16 bits of the address. */ | |
6648 | if (mips_pic == NO_PIC) | |
6649 | { | |
956cd1d6 | 6650 | macro_build_lui (NULL, &icnt, &offset_expr, AT); |
252b5132 RH |
6651 | } |
6652 | else if (mips_pic == SVR4_PIC) | |
6653 | { | |
6654 | macro_build ((char *) NULL, &icnt, &offset_expr, | |
ca4e0257 | 6655 | HAVE_32BIT_ADDRESSES ? "lw" : "ld", |
c9914766 TS |
6656 | "t,o(b)", AT, (int) BFD_RELOC_MIPS_GOT16, |
6657 | mips_gp_register); | |
252b5132 RH |
6658 | } |
6659 | else if (mips_pic == EMBEDDED_PIC) | |
6660 | { | |
6661 | /* For embedded PIC we pick up the entire address off $gp in | |
6662 | a single instruction. */ | |
6663 | macro_build ((char *) NULL, &icnt, &offset_expr, | |
c9914766 TS |
6664 | HAVE_32BIT_ADDRESSES ? "addiu" : "daddiu", "t,r,j", AT, |
6665 | mips_gp_register, (int) BFD_RELOC_GPREL16); | |
252b5132 RH |
6666 | offset_expr.X_op = O_constant; |
6667 | offset_expr.X_add_number = 0; | |
6668 | } | |
6669 | else | |
6670 | abort (); | |
bdaaa2e1 | 6671 | |
252b5132 | 6672 | /* Now we load the register(s). */ |
ca4e0257 | 6673 | if (HAVE_64BIT_GPRS) |
252b5132 RH |
6674 | macro_build ((char *) NULL, &icnt, &offset_expr, "ld", "t,o(b)", |
6675 | treg, (int) BFD_RELOC_LO16, AT); | |
6676 | else | |
6677 | { | |
6678 | macro_build ((char *) NULL, &icnt, &offset_expr, "lw", "t,o(b)", | |
6679 | treg, (int) BFD_RELOC_LO16, AT); | |
f9419b05 | 6680 | if (treg != RA) |
252b5132 RH |
6681 | { |
6682 | /* FIXME: How in the world do we deal with the possible | |
6683 | overflow here? */ | |
6684 | offset_expr.X_add_number += 4; | |
6685 | macro_build ((char *) NULL, &icnt, &offset_expr, "lw", "t,o(b)", | |
6686 | treg + 1, (int) BFD_RELOC_LO16, AT); | |
6687 | } | |
6688 | } | |
6689 | ||
6690 | /* To avoid confusion in tc_gen_reloc, we must ensure that this | |
6691 | does not become a variant frag. */ | |
6692 | frag_wane (frag_now); | |
6693 | frag_new (0); | |
6694 | ||
6695 | break; | |
6696 | ||
6697 | case M_LI_DD: | |
ca4e0257 RS |
6698 | /* Check if we have a constant in IMM_EXPR. If the FPRs are 64 bits |
6699 | wide, IMM_EXPR is the entire value and the GPRs are known to be 64 | |
6700 | bits wide as well. Otherwise IMM_EXPR is the high order 32 bits of | |
6701 | the value and the low order 32 bits are either zero or in | |
6702 | OFFSET_EXPR. */ | |
252b5132 RH |
6703 | if (imm_expr.X_op == O_constant || imm_expr.X_op == O_big) |
6704 | { | |
ca4e0257 RS |
6705 | load_register (&icnt, AT, &imm_expr, HAVE_64BIT_FPRS); |
6706 | if (HAVE_64BIT_FPRS) | |
6707 | { | |
6708 | assert (HAVE_64BIT_GPRS); | |
6709 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, | |
6710 | "dmtc1", "t,S", AT, treg); | |
6711 | } | |
252b5132 RH |
6712 | else |
6713 | { | |
6714 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, | |
6715 | "mtc1", "t,G", AT, treg + 1); | |
6716 | if (offset_expr.X_op == O_absent) | |
6717 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, | |
6718 | "mtc1", "t,G", 0, treg); | |
6719 | else | |
6720 | { | |
6721 | assert (offset_expr.X_op == O_constant); | |
6722 | load_register (&icnt, AT, &offset_expr, 0); | |
6723 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, | |
6724 | "mtc1", "t,G", AT, treg); | |
6725 | } | |
6726 | } | |
6727 | break; | |
6728 | } | |
6729 | ||
6730 | assert (offset_expr.X_op == O_symbol | |
6731 | && offset_expr.X_add_number == 0); | |
6732 | s = segment_name (S_GET_SEGMENT (offset_expr.X_add_symbol)); | |
6733 | if (strcmp (s, ".lit8") == 0) | |
6734 | { | |
e7af610e | 6735 | if (mips_opts.isa != ISA_MIPS1) |
252b5132 RH |
6736 | { |
6737 | macro_build ((char *) NULL, &icnt, &offset_expr, "ldc1", | |
c9914766 TS |
6738 | "T,o(b)", treg, (int) BFD_RELOC_MIPS_LITERAL, |
6739 | mips_gp_register); | |
252b5132 RH |
6740 | return; |
6741 | } | |
c9914766 | 6742 | breg = mips_gp_register; |
252b5132 RH |
6743 | r = BFD_RELOC_MIPS_LITERAL; |
6744 | goto dob; | |
6745 | } | |
6746 | else | |
6747 | { | |
6748 | assert (strcmp (s, RDATA_SECTION_NAME) == 0); | |
6749 | if (mips_pic == SVR4_PIC) | |
6750 | macro_build ((char *) NULL, &icnt, &offset_expr, | |
ca4e0257 | 6751 | HAVE_32BIT_ADDRESSES ? "lw" : "ld", |
c9914766 TS |
6752 | "t,o(b)", AT, (int) BFD_RELOC_MIPS_GOT16, |
6753 | mips_gp_register); | |
252b5132 RH |
6754 | else |
6755 | { | |
6756 | /* FIXME: This won't work for a 64 bit address. */ | |
956cd1d6 | 6757 | macro_build_lui (NULL, &icnt, &offset_expr, AT); |
252b5132 | 6758 | } |
bdaaa2e1 | 6759 | |
e7af610e | 6760 | if (mips_opts.isa != ISA_MIPS1) |
252b5132 RH |
6761 | { |
6762 | macro_build ((char *) NULL, &icnt, &offset_expr, "ldc1", | |
6763 | "T,o(b)", treg, (int) BFD_RELOC_LO16, AT); | |
6764 | ||
6765 | /* To avoid confusion in tc_gen_reloc, we must ensure | |
6766 | that this does not become a variant frag. */ | |
6767 | frag_wane (frag_now); | |
6768 | frag_new (0); | |
6769 | ||
6770 | break; | |
6771 | } | |
6772 | breg = AT; | |
6773 | r = BFD_RELOC_LO16; | |
6774 | goto dob; | |
6775 | } | |
6776 | ||
6777 | case M_L_DOB: | |
ec68c924 | 6778 | if (mips_arch == CPU_R4650) |
252b5132 RH |
6779 | { |
6780 | as_bad (_("opcode not supported on this processor")); | |
6781 | return; | |
6782 | } | |
6783 | /* Even on a big endian machine $fn comes before $fn+1. We have | |
6784 | to adjust when loading from memory. */ | |
6785 | r = BFD_RELOC_LO16; | |
6786 | dob: | |
e7af610e | 6787 | assert (mips_opts.isa == ISA_MIPS1); |
252b5132 RH |
6788 | macro_build ((char *) NULL, &icnt, &offset_expr, "lwc1", "T,o(b)", |
6789 | target_big_endian ? treg + 1 : treg, | |
6790 | (int) r, breg); | |
6791 | /* FIXME: A possible overflow which I don't know how to deal | |
6792 | with. */ | |
6793 | offset_expr.X_add_number += 4; | |
6794 | macro_build ((char *) NULL, &icnt, &offset_expr, "lwc1", "T,o(b)", | |
6795 | target_big_endian ? treg : treg + 1, | |
6796 | (int) r, breg); | |
6797 | ||
6798 | /* To avoid confusion in tc_gen_reloc, we must ensure that this | |
6799 | does not become a variant frag. */ | |
6800 | frag_wane (frag_now); | |
6801 | frag_new (0); | |
6802 | ||
6803 | if (breg != AT) | |
6804 | return; | |
6805 | break; | |
6806 | ||
6807 | case M_L_DAB: | |
6808 | /* | |
6809 | * The MIPS assembler seems to check for X_add_number not | |
6810 | * being double aligned and generating: | |
6811 | * lui at,%hi(foo+1) | |
6812 | * addu at,at,v1 | |
6813 | * addiu at,at,%lo(foo+1) | |
6814 | * lwc1 f2,0(at) | |
6815 | * lwc1 f3,4(at) | |
6816 | * But, the resulting address is the same after relocation so why | |
6817 | * generate the extra instruction? | |
6818 | */ | |
ec68c924 | 6819 | if (mips_arch == CPU_R4650) |
252b5132 RH |
6820 | { |
6821 | as_bad (_("opcode not supported on this processor")); | |
6822 | return; | |
6823 | } | |
bdaaa2e1 | 6824 | /* Itbl support may require additional care here. */ |
252b5132 | 6825 | coproc = 1; |
e7af610e | 6826 | if (mips_opts.isa != ISA_MIPS1) |
252b5132 RH |
6827 | { |
6828 | s = "ldc1"; | |
6829 | goto ld; | |
6830 | } | |
6831 | ||
6832 | s = "lwc1"; | |
6833 | fmt = "T,o(b)"; | |
6834 | goto ldd_std; | |
6835 | ||
6836 | case M_S_DAB: | |
ec68c924 | 6837 | if (mips_arch == CPU_R4650) |
252b5132 RH |
6838 | { |
6839 | as_bad (_("opcode not supported on this processor")); | |
6840 | return; | |
6841 | } | |
6842 | ||
e7af610e | 6843 | if (mips_opts.isa != ISA_MIPS1) |
252b5132 RH |
6844 | { |
6845 | s = "sdc1"; | |
6846 | goto st; | |
6847 | } | |
6848 | ||
6849 | s = "swc1"; | |
6850 | fmt = "T,o(b)"; | |
bdaaa2e1 | 6851 | /* Itbl support may require additional care here. */ |
252b5132 RH |
6852 | coproc = 1; |
6853 | goto ldd_std; | |
6854 | ||
6855 | case M_LD_AB: | |
ca4e0257 | 6856 | if (HAVE_64BIT_GPRS) |
252b5132 RH |
6857 | { |
6858 | s = "ld"; | |
6859 | goto ld; | |
6860 | } | |
6861 | ||
6862 | s = "lw"; | |
6863 | fmt = "t,o(b)"; | |
6864 | goto ldd_std; | |
6865 | ||
6866 | case M_SD_AB: | |
ca4e0257 | 6867 | if (HAVE_64BIT_GPRS) |
252b5132 RH |
6868 | { |
6869 | s = "sd"; | |
6870 | goto st; | |
6871 | } | |
6872 | ||
6873 | s = "sw"; | |
6874 | fmt = "t,o(b)"; | |
6875 | ||
6876 | ldd_std: | |
afdbd6d0 CD |
6877 | /* We do _not_ bother to allow embedded PIC (symbol-local_symbol) |
6878 | loads for the case of doing a pair of loads to simulate an 'ld'. | |
6879 | This is not currently done by the compiler, and assembly coders | |
6880 | writing embedded-pic code can cope. */ | |
6881 | ||
252b5132 RH |
6882 | if (offset_expr.X_op != O_symbol |
6883 | && offset_expr.X_op != O_constant) | |
6884 | { | |
6885 | as_bad (_("expression too complex")); | |
6886 | offset_expr.X_op = O_constant; | |
6887 | } | |
6888 | ||
6889 | /* Even on a big endian machine $fn comes before $fn+1. We have | |
6890 | to adjust when loading from memory. We set coproc if we must | |
6891 | load $fn+1 first. */ | |
bdaaa2e1 | 6892 | /* Itbl support may require additional care here. */ |
252b5132 RH |
6893 | if (! target_big_endian) |
6894 | coproc = 0; | |
6895 | ||
6896 | if (mips_pic == NO_PIC | |
6897 | || offset_expr.X_op == O_constant) | |
6898 | { | |
f9419b05 TS |
6899 | char *p; |
6900 | ||
252b5132 | 6901 | /* If this is a reference to a GP relative symbol, we want |
cdf6fd85 TS |
6902 | <op> $treg,<sym>($gp) (BFD_RELOC_GPREL16) |
6903 | <op> $treg+1,<sym>+4($gp) (BFD_RELOC_GPREL16) | |
252b5132 RH |
6904 | If we have a base register, we use this |
6905 | addu $at,$breg,$gp | |
cdf6fd85 TS |
6906 | <op> $treg,<sym>($at) (BFD_RELOC_GPREL16) |
6907 | <op> $treg+1,<sym>+4($at) (BFD_RELOC_GPREL16) | |
252b5132 RH |
6908 | If this is not a GP relative symbol, we want |
6909 | lui $at,<sym> (BFD_RELOC_HI16_S) | |
6910 | <op> $treg,<sym>($at) (BFD_RELOC_LO16) | |
6911 | <op> $treg+1,<sym>+4($at) (BFD_RELOC_LO16) | |
6912 | If there is a base register, we add it to $at after the | |
6913 | lui instruction. If there is a constant, we always use | |
6914 | the last case. */ | |
e7d556df | 6915 | if ((valueT) offset_expr.X_add_number > MAX_GPREL_OFFSET |
252b5132 RH |
6916 | || nopic_need_relax (offset_expr.X_add_symbol, 1)) |
6917 | { | |
6918 | p = NULL; | |
6919 | used_at = 1; | |
6920 | } | |
6921 | else | |
6922 | { | |
6923 | int off; | |
6924 | ||
6925 | if (breg == 0) | |
6926 | { | |
6927 | frag_grow (28); | |
c9914766 | 6928 | tempreg = mips_gp_register; |
252b5132 RH |
6929 | off = 0; |
6930 | used_at = 0; | |
6931 | } | |
6932 | else | |
6933 | { | |
6934 | frag_grow (36); | |
6935 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, | |
f5040a92 AO |
6936 | HAVE_32BIT_ADDRESSES ? HAVE_NEWABI |
6937 | ? "add" : "addu" : "daddu", | |
c9914766 | 6938 | "d,v,t", AT, breg, mips_gp_register); |
252b5132 RH |
6939 | tempreg = AT; |
6940 | off = 4; | |
6941 | used_at = 1; | |
6942 | } | |
6943 | ||
beae10d5 | 6944 | /* Itbl support may require additional care here. */ |
252b5132 RH |
6945 | macro_build ((char *) NULL, &icnt, &offset_expr, s, fmt, |
6946 | coproc ? treg + 1 : treg, | |
cdf6fd85 | 6947 | (int) BFD_RELOC_GPREL16, tempreg); |
252b5132 RH |
6948 | offset_expr.X_add_number += 4; |
6949 | ||
6950 | /* Set mips_optimize to 2 to avoid inserting an | |
6951 | undesired nop. */ | |
6952 | hold_mips_optimize = mips_optimize; | |
6953 | mips_optimize = 2; | |
beae10d5 | 6954 | /* Itbl support may require additional care here. */ |
252b5132 RH |
6955 | macro_build ((char *) NULL, &icnt, &offset_expr, s, fmt, |
6956 | coproc ? treg : treg + 1, | |
cdf6fd85 | 6957 | (int) BFD_RELOC_GPREL16, tempreg); |
252b5132 RH |
6958 | mips_optimize = hold_mips_optimize; |
6959 | ||
6960 | p = frag_var (rs_machine_dependent, 12 + off, 0, | |
6961 | RELAX_ENCODE (8 + off, 12 + off, 0, 4 + off, 1, | |
6962 | used_at && mips_opts.noat), | |
956cd1d6 | 6963 | offset_expr.X_add_symbol, 0, NULL); |
252b5132 RH |
6964 | |
6965 | /* We just generated two relocs. When tc_gen_reloc | |
6966 | handles this case, it will skip the first reloc and | |
6967 | handle the second. The second reloc already has an | |
6968 | extra addend of 4, which we added above. We must | |
6969 | subtract it out, and then subtract another 4 to make | |
6970 | the first reloc come out right. The second reloc | |
6971 | will come out right because we are going to add 4 to | |
6972 | offset_expr when we build its instruction below. | |
6973 | ||
6974 | If we have a symbol, then we don't want to include | |
6975 | the offset, because it will wind up being included | |
6976 | when we generate the reloc. */ | |
6977 | ||
6978 | if (offset_expr.X_op == O_constant) | |
6979 | offset_expr.X_add_number -= 8; | |
6980 | else | |
6981 | { | |
6982 | offset_expr.X_add_number = -4; | |
6983 | offset_expr.X_op = O_constant; | |
6984 | } | |
6985 | } | |
6986 | macro_build_lui (p, &icnt, &offset_expr, AT); | |
6987 | if (p != NULL) | |
6988 | p += 4; | |
6989 | if (breg != 0) | |
6990 | { | |
6991 | macro_build (p, &icnt, (expressionS *) NULL, | |
f5040a92 AO |
6992 | HAVE_32BIT_ADDRESSES ? HAVE_NEWABI |
6993 | ? "add" : "addu" : "daddu", | |
252b5132 RH |
6994 | "d,v,t", AT, breg, AT); |
6995 | if (p != NULL) | |
6996 | p += 4; | |
6997 | } | |
beae10d5 | 6998 | /* Itbl support may require additional care here. */ |
252b5132 RH |
6999 | macro_build (p, &icnt, &offset_expr, s, fmt, |
7000 | coproc ? treg + 1 : treg, | |
7001 | (int) BFD_RELOC_LO16, AT); | |
7002 | if (p != NULL) | |
7003 | p += 4; | |
7004 | /* FIXME: How do we handle overflow here? */ | |
7005 | offset_expr.X_add_number += 4; | |
beae10d5 | 7006 | /* Itbl support may require additional care here. */ |
252b5132 RH |
7007 | macro_build (p, &icnt, &offset_expr, s, fmt, |
7008 | coproc ? treg : treg + 1, | |
7009 | (int) BFD_RELOC_LO16, AT); | |
bdaaa2e1 | 7010 | } |
252b5132 RH |
7011 | else if (mips_pic == SVR4_PIC && ! mips_big_got) |
7012 | { | |
7013 | int off; | |
7014 | ||
7015 | /* If this is a reference to an external symbol, we want | |
7016 | lw $at,<sym>($gp) (BFD_RELOC_MIPS_GOT16) | |
7017 | nop | |
7018 | <op> $treg,0($at) | |
7019 | <op> $treg+1,4($at) | |
7020 | Otherwise we want | |
7021 | lw $at,<sym>($gp) (BFD_RELOC_MIPS_GOT16) | |
7022 | nop | |
7023 | <op> $treg,<sym>($at) (BFD_RELOC_LO16) | |
7024 | <op> $treg+1,<sym>+4($at) (BFD_RELOC_LO16) | |
7025 | If there is a base register we add it to $at before the | |
7026 | lwc1 instructions. If there is a constant we include it | |
7027 | in the lwc1 instructions. */ | |
7028 | used_at = 1; | |
7029 | expr1.X_add_number = offset_expr.X_add_number; | |
7030 | offset_expr.X_add_number = 0; | |
7031 | if (expr1.X_add_number < -0x8000 | |
7032 | || expr1.X_add_number >= 0x8000 - 4) | |
7033 | as_bad (_("PIC code offset overflow (max 16 signed bits)")); | |
7034 | if (breg == 0) | |
7035 | off = 0; | |
7036 | else | |
7037 | off = 4; | |
7038 | frag_grow (24 + off); | |
7039 | macro_build ((char *) NULL, &icnt, &offset_expr, | |
c9914766 TS |
7040 | HAVE_32BIT_ADDRESSES ? "lw" : "ld", "t,o(b)", AT, |
7041 | (int) BFD_RELOC_MIPS_GOT16, mips_gp_register); | |
252b5132 RH |
7042 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "nop", ""); |
7043 | if (breg != 0) | |
7044 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, | |
f5040a92 AO |
7045 | HAVE_32BIT_ADDRESSES ? HAVE_NEWABI |
7046 | ? "add" : "addu" : "daddu", | |
252b5132 | 7047 | "d,v,t", AT, breg, AT); |
beae10d5 | 7048 | /* Itbl support may require additional care here. */ |
252b5132 RH |
7049 | macro_build ((char *) NULL, &icnt, &expr1, s, fmt, |
7050 | coproc ? treg + 1 : treg, | |
7051 | (int) BFD_RELOC_LO16, AT); | |
7052 | expr1.X_add_number += 4; | |
7053 | ||
7054 | /* Set mips_optimize to 2 to avoid inserting an undesired | |
7055 | nop. */ | |
7056 | hold_mips_optimize = mips_optimize; | |
7057 | mips_optimize = 2; | |
beae10d5 | 7058 | /* Itbl support may require additional care here. */ |
252b5132 RH |
7059 | macro_build ((char *) NULL, &icnt, &expr1, s, fmt, |
7060 | coproc ? treg : treg + 1, | |
7061 | (int) BFD_RELOC_LO16, AT); | |
7062 | mips_optimize = hold_mips_optimize; | |
7063 | ||
7064 | (void) frag_var (rs_machine_dependent, 0, 0, | |
7065 | RELAX_ENCODE (0, 0, -16 - off, -8, 1, 0), | |
c4e7957c | 7066 | offset_expr.X_add_symbol, 0, NULL); |
252b5132 RH |
7067 | } |
7068 | else if (mips_pic == SVR4_PIC) | |
7069 | { | |
7070 | int gpdel, off; | |
f9419b05 | 7071 | char *p; |
252b5132 RH |
7072 | |
7073 | /* If this is a reference to an external symbol, we want | |
7074 | lui $at,<sym> (BFD_RELOC_MIPS_GOT_HI16) | |
7075 | addu $at,$at,$gp | |
7076 | lw $at,<sym>($at) (BFD_RELOC_MIPS_GOT_LO16) | |
7077 | nop | |
7078 | <op> $treg,0($at) | |
7079 | <op> $treg+1,4($at) | |
7080 | Otherwise we want | |
7081 | lw $at,<sym>($gp) (BFD_RELOC_MIPS_GOT16) | |
7082 | nop | |
7083 | <op> $treg,<sym>($at) (BFD_RELOC_LO16) | |
7084 | <op> $treg+1,<sym>+4($at) (BFD_RELOC_LO16) | |
7085 | If there is a base register we add it to $at before the | |
7086 | lwc1 instructions. If there is a constant we include it | |
7087 | in the lwc1 instructions. */ | |
7088 | used_at = 1; | |
7089 | expr1.X_add_number = offset_expr.X_add_number; | |
7090 | offset_expr.X_add_number = 0; | |
7091 | if (expr1.X_add_number < -0x8000 | |
7092 | || expr1.X_add_number >= 0x8000 - 4) | |
7093 | as_bad (_("PIC code offset overflow (max 16 signed bits)")); | |
c9914766 | 7094 | if (reg_needs_delay (mips_gp_register)) |
252b5132 RH |
7095 | gpdel = 4; |
7096 | else | |
7097 | gpdel = 0; | |
7098 | if (breg == 0) | |
7099 | off = 0; | |
7100 | else | |
7101 | off = 4; | |
7102 | frag_grow (56); | |
7103 | macro_build ((char *) NULL, &icnt, &offset_expr, "lui", "t,u", | |
7104 | AT, (int) BFD_RELOC_MIPS_GOT_HI16); | |
7105 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, | |
f5040a92 AO |
7106 | HAVE_32BIT_ADDRESSES ? HAVE_NEWABI |
7107 | ? "add" : "addu" : "daddu", | |
c9914766 | 7108 | "d,v,t", AT, AT, mips_gp_register); |
252b5132 | 7109 | macro_build ((char *) NULL, &icnt, &offset_expr, |
ca4e0257 | 7110 | HAVE_32BIT_ADDRESSES ? "lw" : "ld", |
252b5132 RH |
7111 | "t,o(b)", AT, (int) BFD_RELOC_MIPS_GOT_LO16, AT); |
7112 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "nop", ""); | |
7113 | if (breg != 0) | |
7114 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, | |
f5040a92 AO |
7115 | HAVE_32BIT_ADDRESSES ? HAVE_NEWABI |
7116 | ? "add" : "addu" : "daddu", | |
252b5132 | 7117 | "d,v,t", AT, breg, AT); |
beae10d5 | 7118 | /* Itbl support may require additional care here. */ |
252b5132 RH |
7119 | macro_build ((char *) NULL, &icnt, &expr1, s, fmt, |
7120 | coproc ? treg + 1 : treg, | |
7121 | (int) BFD_RELOC_LO16, AT); | |
7122 | expr1.X_add_number += 4; | |
7123 | ||
7124 | /* Set mips_optimize to 2 to avoid inserting an undesired | |
7125 | nop. */ | |
7126 | hold_mips_optimize = mips_optimize; | |
7127 | mips_optimize = 2; | |
beae10d5 | 7128 | /* Itbl support may require additional care here. */ |
252b5132 RH |
7129 | macro_build ((char *) NULL, &icnt, &expr1, s, fmt, |
7130 | coproc ? treg : treg + 1, | |
7131 | (int) BFD_RELOC_LO16, AT); | |
7132 | mips_optimize = hold_mips_optimize; | |
7133 | expr1.X_add_number -= 4; | |
7134 | ||
7135 | p = frag_var (rs_machine_dependent, 16 + gpdel + off, 0, | |
7136 | RELAX_ENCODE (24 + off, 16 + gpdel + off, gpdel, | |
7137 | 8 + gpdel + off, 1, 0), | |
c4e7957c | 7138 | offset_expr.X_add_symbol, 0, NULL); |
252b5132 RH |
7139 | if (gpdel > 0) |
7140 | { | |
7141 | macro_build (p, &icnt, (expressionS *) NULL, "nop", ""); | |
7142 | p += 4; | |
7143 | } | |
7144 | macro_build (p, &icnt, &offset_expr, | |
ca4e0257 | 7145 | HAVE_32BIT_ADDRESSES ? "lw" : "ld", |
c9914766 TS |
7146 | "t,o(b)", AT, (int) BFD_RELOC_MIPS_GOT16, |
7147 | mips_gp_register); | |
252b5132 RH |
7148 | p += 4; |
7149 | macro_build (p, &icnt, (expressionS *) NULL, "nop", ""); | |
7150 | p += 4; | |
7151 | if (breg != 0) | |
7152 | { | |
7153 | macro_build (p, &icnt, (expressionS *) NULL, | |
f5040a92 AO |
7154 | HAVE_32BIT_ADDRESSES ? HAVE_NEWABI |
7155 | ? "add" : "addu" : "daddu", | |
252b5132 RH |
7156 | "d,v,t", AT, breg, AT); |
7157 | p += 4; | |
7158 | } | |
beae10d5 | 7159 | /* Itbl support may require additional care here. */ |
252b5132 RH |
7160 | macro_build (p, &icnt, &expr1, s, fmt, |
7161 | coproc ? treg + 1 : treg, | |
7162 | (int) BFD_RELOC_LO16, AT); | |
7163 | p += 4; | |
7164 | expr1.X_add_number += 4; | |
7165 | ||
7166 | /* Set mips_optimize to 2 to avoid inserting an undesired | |
7167 | nop. */ | |
7168 | hold_mips_optimize = mips_optimize; | |
7169 | mips_optimize = 2; | |
beae10d5 | 7170 | /* Itbl support may require additional care here. */ |
252b5132 RH |
7171 | macro_build (p, &icnt, &expr1, s, fmt, |
7172 | coproc ? treg : treg + 1, | |
7173 | (int) BFD_RELOC_LO16, AT); | |
7174 | mips_optimize = hold_mips_optimize; | |
7175 | } | |
7176 | else if (mips_pic == EMBEDDED_PIC) | |
7177 | { | |
7178 | /* If there is no base register, we use | |
cdf6fd85 TS |
7179 | <op> $treg,<sym>($gp) (BFD_RELOC_GPREL16) |
7180 | <op> $treg+1,<sym>+4($gp) (BFD_RELOC_GPREL16) | |
252b5132 RH |
7181 | If we have a base register, we use |
7182 | addu $at,$breg,$gp | |
cdf6fd85 TS |
7183 | <op> $treg,<sym>($at) (BFD_RELOC_GPREL16) |
7184 | <op> $treg+1,<sym>+4($at) (BFD_RELOC_GPREL16) | |
252b5132 RH |
7185 | */ |
7186 | if (breg == 0) | |
7187 | { | |
c9914766 | 7188 | tempreg = mips_gp_register; |
252b5132 RH |
7189 | used_at = 0; |
7190 | } | |
7191 | else | |
7192 | { | |
7193 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, | |
ca4e0257 | 7194 | HAVE_32BIT_ADDRESSES ? "addu" : "daddu", |
c9914766 | 7195 | "d,v,t", AT, breg, mips_gp_register); |
252b5132 RH |
7196 | tempreg = AT; |
7197 | used_at = 1; | |
7198 | } | |
7199 | ||
beae10d5 | 7200 | /* Itbl support may require additional care here. */ |
252b5132 RH |
7201 | macro_build ((char *) NULL, &icnt, &offset_expr, s, fmt, |
7202 | coproc ? treg + 1 : treg, | |
cdf6fd85 | 7203 | (int) BFD_RELOC_GPREL16, tempreg); |
252b5132 | 7204 | offset_expr.X_add_number += 4; |
beae10d5 | 7205 | /* Itbl support may require additional care here. */ |
252b5132 RH |
7206 | macro_build ((char *) NULL, &icnt, &offset_expr, s, fmt, |
7207 | coproc ? treg : treg + 1, | |
cdf6fd85 | 7208 | (int) BFD_RELOC_GPREL16, tempreg); |
252b5132 RH |
7209 | } |
7210 | else | |
7211 | abort (); | |
7212 | ||
7213 | if (! used_at) | |
7214 | return; | |
7215 | ||
7216 | break; | |
7217 | ||
7218 | case M_LD_OB: | |
7219 | s = "lw"; | |
7220 | goto sd_ob; | |
7221 | case M_SD_OB: | |
7222 | s = "sw"; | |
7223 | sd_ob: | |
ca4e0257 | 7224 | assert (HAVE_32BIT_ADDRESSES); |
252b5132 RH |
7225 | macro_build ((char *) NULL, &icnt, &offset_expr, s, "t,o(b)", treg, |
7226 | (int) BFD_RELOC_LO16, breg); | |
7227 | offset_expr.X_add_number += 4; | |
7228 | macro_build ((char *) NULL, &icnt, &offset_expr, s, "t,o(b)", treg + 1, | |
7229 | (int) BFD_RELOC_LO16, breg); | |
7230 | return; | |
7231 | ||
7232 | /* New code added to support COPZ instructions. | |
7233 | This code builds table entries out of the macros in mip_opcodes. | |
7234 | R4000 uses interlocks to handle coproc delays. | |
7235 | Other chips (like the R3000) require nops to be inserted for delays. | |
7236 | ||
f72c8c98 | 7237 | FIXME: Currently, we require that the user handle delays. |
252b5132 RH |
7238 | In order to fill delay slots for non-interlocked chips, |
7239 | we must have a way to specify delays based on the coprocessor. | |
7240 | Eg. 4 cycles if load coproc reg from memory, 1 if in cache, etc. | |
7241 | What are the side-effects of the cop instruction? | |
7242 | What cache support might we have and what are its effects? | |
7243 | Both coprocessor & memory require delays. how long??? | |
bdaaa2e1 | 7244 | What registers are read/set/modified? |
252b5132 RH |
7245 | |
7246 | If an itbl is provided to interpret cop instructions, | |
bdaaa2e1 | 7247 | this knowledge can be encoded in the itbl spec. */ |
252b5132 RH |
7248 | |
7249 | case M_COP0: | |
7250 | s = "c0"; | |
7251 | goto copz; | |
7252 | case M_COP1: | |
7253 | s = "c1"; | |
7254 | goto copz; | |
7255 | case M_COP2: | |
7256 | s = "c2"; | |
7257 | goto copz; | |
7258 | case M_COP3: | |
7259 | s = "c3"; | |
7260 | copz: | |
7261 | /* For now we just do C (same as Cz). The parameter will be | |
7262 | stored in insn_opcode by mips_ip. */ | |
7263 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, s, "C", | |
7264 | ip->insn_opcode); | |
7265 | return; | |
7266 | ||
ea1fb5dc RS |
7267 | case M_MOVE: |
7268 | move_register (&icnt, dreg, sreg); | |
7269 | return; | |
7270 | ||
252b5132 RH |
7271 | #ifdef LOSING_COMPILER |
7272 | default: | |
7273 | /* Try and see if this is a new itbl instruction. | |
7274 | This code builds table entries out of the macros in mip_opcodes. | |
7275 | FIXME: For now we just assemble the expression and pass it's | |
7276 | value along as a 32-bit immediate. | |
bdaaa2e1 | 7277 | We may want to have the assembler assemble this value, |
252b5132 RH |
7278 | so that we gain the assembler's knowledge of delay slots, |
7279 | symbols, etc. | |
7280 | Would it be more efficient to use mask (id) here? */ | |
bdaaa2e1 | 7281 | if (itbl_have_entries |
252b5132 | 7282 | && (immed_expr = itbl_assemble (ip->insn_mo->name, ""))) |
beae10d5 | 7283 | { |
252b5132 RH |
7284 | s = ip->insn_mo->name; |
7285 | s2 = "cop3"; | |
7286 | coproc = ITBL_DECODE_PNUM (immed_expr);; | |
7287 | macro_build ((char *) NULL, &icnt, &immed_expr, s, "C"); | |
7288 | return; | |
beae10d5 | 7289 | } |
252b5132 RH |
7290 | macro2 (ip); |
7291 | return; | |
7292 | } | |
7293 | if (mips_opts.noat) | |
7294 | as_warn (_("Macro used $at after \".set noat\"")); | |
7295 | } | |
bdaaa2e1 | 7296 | |
252b5132 RH |
7297 | static void |
7298 | macro2 (ip) | |
7299 | struct mips_cl_insn *ip; | |
7300 | { | |
7301 | register int treg, sreg, dreg, breg; | |
7302 | int tempreg; | |
7303 | int mask; | |
7304 | int icnt = 0; | |
7305 | int used_at; | |
7306 | expressionS expr1; | |
7307 | const char *s; | |
7308 | const char *s2; | |
7309 | const char *fmt; | |
7310 | int likely = 0; | |
7311 | int dbl = 0; | |
7312 | int coproc = 0; | |
7313 | int lr = 0; | |
7314 | int imm = 0; | |
7315 | int off; | |
7316 | offsetT maxnum; | |
7317 | bfd_reloc_code_real_type r; | |
7318 | char *p; | |
bdaaa2e1 | 7319 | |
252b5132 RH |
7320 | treg = (ip->insn_opcode >> 16) & 0x1f; |
7321 | dreg = (ip->insn_opcode >> 11) & 0x1f; | |
7322 | sreg = breg = (ip->insn_opcode >> 21) & 0x1f; | |
7323 | mask = ip->insn_mo->mask; | |
bdaaa2e1 | 7324 | |
252b5132 RH |
7325 | expr1.X_op = O_constant; |
7326 | expr1.X_op_symbol = NULL; | |
7327 | expr1.X_add_symbol = NULL; | |
7328 | expr1.X_add_number = 1; | |
bdaaa2e1 | 7329 | |
252b5132 RH |
7330 | switch (mask) |
7331 | { | |
7332 | #endif /* LOSING_COMPILER */ | |
7333 | ||
7334 | case M_DMUL: | |
7335 | dbl = 1; | |
7336 | case M_MUL: | |
2396cfb9 TS |
7337 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, |
7338 | dbl ? "dmultu" : "multu", "s,t", sreg, treg); | |
7339 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "mflo", "d", | |
7340 | dreg); | |
252b5132 RH |
7341 | return; |
7342 | ||
7343 | case M_DMUL_I: | |
7344 | dbl = 1; | |
7345 | case M_MUL_I: | |
7346 | /* The MIPS assembler some times generates shifts and adds. I'm | |
7347 | not trying to be that fancy. GCC should do this for us | |
7348 | anyway. */ | |
7349 | load_register (&icnt, AT, &imm_expr, dbl); | |
2396cfb9 | 7350 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, |
9a41af64 | 7351 | dbl ? "dmult" : "mult", "s,t", sreg, AT); |
2396cfb9 TS |
7352 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "mflo", "d", |
7353 | dreg); | |
252b5132 RH |
7354 | break; |
7355 | ||
7356 | case M_DMULO_I: | |
7357 | dbl = 1; | |
7358 | case M_MULO_I: | |
7359 | imm = 1; | |
7360 | goto do_mulo; | |
7361 | ||
7362 | case M_DMULO: | |
7363 | dbl = 1; | |
7364 | case M_MULO: | |
7365 | do_mulo: | |
b34976b6 | 7366 | mips_emit_delays (TRUE); |
252b5132 RH |
7367 | ++mips_opts.noreorder; |
7368 | mips_any_noreorder = 1; | |
7369 | if (imm) | |
7370 | load_register (&icnt, AT, &imm_expr, dbl); | |
2396cfb9 | 7371 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, |
9a41af64 | 7372 | dbl ? "dmult" : "mult", "s,t", sreg, imm ? AT : treg); |
2396cfb9 TS |
7373 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "mflo", "d", |
7374 | dreg); | |
7375 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, | |
f9419b05 | 7376 | dbl ? "dsra32" : "sra", "d,w,<", dreg, dreg, RA); |
2396cfb9 TS |
7377 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "mfhi", "d", |
7378 | AT); | |
252b5132 | 7379 | if (mips_trap) |
9bd7d936 MR |
7380 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "tne", |
7381 | "s,t,q", dreg, AT, 6); | |
252b5132 RH |
7382 | else |
7383 | { | |
7384 | expr1.X_add_number = 8; | |
2396cfb9 TS |
7385 | macro_build ((char *) NULL, &icnt, &expr1, "beq", "s,t,p", dreg, |
7386 | AT); | |
7387 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "nop", "", | |
7388 | 0); | |
7389 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "break", | |
7390 | "c", 6); | |
252b5132 RH |
7391 | } |
7392 | --mips_opts.noreorder; | |
2396cfb9 | 7393 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "mflo", "d", dreg); |
252b5132 RH |
7394 | break; |
7395 | ||
7396 | case M_DMULOU_I: | |
7397 | dbl = 1; | |
7398 | case M_MULOU_I: | |
7399 | imm = 1; | |
7400 | goto do_mulou; | |
7401 | ||
7402 | case M_DMULOU: | |
7403 | dbl = 1; | |
7404 | case M_MULOU: | |
7405 | do_mulou: | |
b34976b6 | 7406 | mips_emit_delays (TRUE); |
252b5132 RH |
7407 | ++mips_opts.noreorder; |
7408 | mips_any_noreorder = 1; | |
7409 | if (imm) | |
7410 | load_register (&icnt, AT, &imm_expr, dbl); | |
2396cfb9 | 7411 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, |
252b5132 RH |
7412 | dbl ? "dmultu" : "multu", |
7413 | "s,t", sreg, imm ? AT : treg); | |
2396cfb9 TS |
7414 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "mfhi", "d", |
7415 | AT); | |
7416 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "mflo", "d", | |
7417 | dreg); | |
252b5132 | 7418 | if (mips_trap) |
9bd7d936 MR |
7419 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "tne", |
7420 | "s,t,q", AT, 0, 6); | |
252b5132 RH |
7421 | else |
7422 | { | |
7423 | expr1.X_add_number = 8; | |
7424 | macro_build ((char *) NULL, &icnt, &expr1, "beq", "s,t,p", AT, 0); | |
2396cfb9 TS |
7425 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "nop", "", |
7426 | 0); | |
7427 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "break", | |
7428 | "c", 6); | |
252b5132 RH |
7429 | } |
7430 | --mips_opts.noreorder; | |
7431 | break; | |
7432 | ||
771c7ce4 | 7433 | case M_DROL: |
af7ee8bf | 7434 | if (ISA_HAS_DROR (mips_opts.isa) || CPU_HAS_DROR (mips_arch)) |
82dd0097 CD |
7435 | { |
7436 | if (dreg == sreg) | |
7437 | { | |
7438 | tempreg = AT; | |
7439 | used_at = 1; | |
7440 | } | |
7441 | else | |
7442 | { | |
7443 | tempreg = dreg; | |
7444 | used_at = 0; | |
7445 | } | |
7446 | macro_build ((char *) NULL, &icnt, NULL, "dnegu", | |
7447 | "d,w", tempreg, treg); | |
7448 | macro_build ((char *) NULL, &icnt, NULL, "drorv", | |
7449 | "d,t,s", dreg, sreg, tempreg); | |
7450 | if (used_at) | |
7451 | break; | |
7452 | return; | |
7453 | } | |
771c7ce4 TS |
7454 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "dsubu", |
7455 | "d,v,t", AT, 0, treg); | |
7456 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "dsrlv", | |
7457 | "d,t,s", AT, sreg, AT); | |
7458 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "dsllv", | |
7459 | "d,t,s", dreg, sreg, treg); | |
7460 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "or", | |
7461 | "d,v,t", dreg, dreg, AT); | |
7462 | break; | |
7463 | ||
252b5132 | 7464 | case M_ROL: |
af7ee8bf | 7465 | if (ISA_HAS_ROR (mips_opts.isa) || CPU_HAS_ROR (mips_arch)) |
82dd0097 CD |
7466 | { |
7467 | if (dreg == sreg) | |
7468 | { | |
7469 | tempreg = AT; | |
7470 | used_at = 1; | |
7471 | } | |
7472 | else | |
7473 | { | |
7474 | tempreg = dreg; | |
7475 | used_at = 0; | |
7476 | } | |
7477 | macro_build ((char *) NULL, &icnt, NULL, "negu", | |
7478 | "d,w", tempreg, treg); | |
7479 | macro_build ((char *) NULL, &icnt, NULL, "rorv", | |
7480 | "d,t,s", dreg, sreg, tempreg); | |
7481 | if (used_at) | |
7482 | break; | |
7483 | return; | |
7484 | } | |
2396cfb9 TS |
7485 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "subu", |
7486 | "d,v,t", AT, 0, treg); | |
7487 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "srlv", | |
7488 | "d,t,s", AT, sreg, AT); | |
7489 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "sllv", | |
7490 | "d,t,s", dreg, sreg, treg); | |
7491 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "or", | |
7492 | "d,v,t", dreg, dreg, AT); | |
252b5132 RH |
7493 | break; |
7494 | ||
771c7ce4 TS |
7495 | case M_DROL_I: |
7496 | { | |
7497 | unsigned int rot; | |
82dd0097 | 7498 | char *l, *r; |
771c7ce4 TS |
7499 | |
7500 | if (imm_expr.X_op != O_constant) | |
82dd0097 | 7501 | as_bad (_("Improper rotate count")); |
771c7ce4 | 7502 | rot = imm_expr.X_add_number & 0x3f; |
af7ee8bf | 7503 | if (ISA_HAS_DROR (mips_opts.isa) || CPU_HAS_DROR (mips_arch)) |
60b63b72 RS |
7504 | { |
7505 | rot = (64 - rot) & 0x3f; | |
7506 | if (rot >= 32) | |
7507 | macro_build ((char *) NULL, &icnt, NULL, "dror32", | |
7508 | "d,w,<", dreg, sreg, rot - 32); | |
7509 | else | |
7510 | macro_build ((char *) NULL, &icnt, NULL, "dror", | |
7511 | "d,w,<", dreg, sreg, rot); | |
82dd0097 | 7512 | return; |
60b63b72 | 7513 | } |
483fc7cd | 7514 | if (rot == 0) |
483fc7cd | 7515 | { |
82dd0097 CD |
7516 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "dsrl", |
7517 | "d,w,<", dreg, sreg, 0); | |
7518 | return; | |
483fc7cd | 7519 | } |
82dd0097 CD |
7520 | l = (rot < 0x20) ? "dsll" : "dsll32"; |
7521 | r = ((0x40 - rot) < 0x20) ? "dsrl" : "dsrl32"; | |
7522 | rot &= 0x1f; | |
7523 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, l, | |
7524 | "d,w,<", AT, sreg, rot); | |
7525 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, r, | |
7526 | "d,w,<", dreg, sreg, (0x20 - rot) & 0x1f); | |
7527 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "or", | |
7528 | "d,v,t", dreg, dreg, AT); | |
771c7ce4 TS |
7529 | } |
7530 | break; | |
7531 | ||
252b5132 | 7532 | case M_ROL_I: |
771c7ce4 TS |
7533 | { |
7534 | unsigned int rot; | |
7535 | ||
7536 | if (imm_expr.X_op != O_constant) | |
82dd0097 | 7537 | as_bad (_("Improper rotate count")); |
771c7ce4 | 7538 | rot = imm_expr.X_add_number & 0x1f; |
af7ee8bf | 7539 | if (ISA_HAS_ROR (mips_opts.isa) || CPU_HAS_ROR (mips_arch)) |
60b63b72 RS |
7540 | { |
7541 | macro_build ((char *) NULL, &icnt, NULL, "ror", | |
7542 | "d,w,<", dreg, sreg, (32 - rot) & 0x1f); | |
82dd0097 | 7543 | return; |
60b63b72 | 7544 | } |
483fc7cd | 7545 | if (rot == 0) |
483fc7cd | 7546 | { |
483fc7cd | 7547 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "srl", |
82dd0097 CD |
7548 | "d,w,<", dreg, sreg, 0); |
7549 | return; | |
483fc7cd | 7550 | } |
82dd0097 CD |
7551 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "sll", |
7552 | "d,w,<", AT, sreg, rot); | |
7553 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "srl", | |
7554 | "d,w,<", dreg, sreg, (0x20 - rot) & 0x1f); | |
7555 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "or", | |
7556 | "d,v,t", dreg, dreg, AT); | |
771c7ce4 TS |
7557 | } |
7558 | break; | |
7559 | ||
7560 | case M_DROR: | |
af7ee8bf | 7561 | if (ISA_HAS_DROR (mips_opts.isa) || CPU_HAS_DROR (mips_arch)) |
82dd0097 CD |
7562 | { |
7563 | macro_build ((char *) NULL, &icnt, NULL, "drorv", | |
7564 | "d,t,s", dreg, sreg, treg); | |
7565 | return; | |
7566 | } | |
771c7ce4 TS |
7567 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "dsubu", |
7568 | "d,v,t", AT, 0, treg); | |
7569 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "dsllv", | |
7570 | "d,t,s", AT, sreg, AT); | |
7571 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "dsrlv", | |
7572 | "d,t,s", dreg, sreg, treg); | |
7573 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "or", | |
7574 | "d,v,t", dreg, dreg, AT); | |
252b5132 RH |
7575 | break; |
7576 | ||
7577 | case M_ROR: | |
af7ee8bf | 7578 | if (ISA_HAS_ROR (mips_opts.isa) || CPU_HAS_ROR (mips_arch)) |
82dd0097 CD |
7579 | { |
7580 | macro_build ((char *) NULL, &icnt, NULL, "rorv", | |
7581 | "d,t,s", dreg, sreg, treg); | |
7582 | return; | |
7583 | } | |
2396cfb9 TS |
7584 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "subu", |
7585 | "d,v,t", AT, 0, treg); | |
7586 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "sllv", | |
7587 | "d,t,s", AT, sreg, AT); | |
7588 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "srlv", | |
7589 | "d,t,s", dreg, sreg, treg); | |
7590 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "or", | |
7591 | "d,v,t", dreg, dreg, AT); | |
252b5132 RH |
7592 | break; |
7593 | ||
771c7ce4 TS |
7594 | case M_DROR_I: |
7595 | { | |
7596 | unsigned int rot; | |
82dd0097 | 7597 | char *l, *r; |
771c7ce4 TS |
7598 | |
7599 | if (imm_expr.X_op != O_constant) | |
82dd0097 | 7600 | as_bad (_("Improper rotate count")); |
771c7ce4 | 7601 | rot = imm_expr.X_add_number & 0x3f; |
af7ee8bf | 7602 | if (ISA_HAS_DROR (mips_opts.isa) || CPU_HAS_DROR (mips_arch)) |
82dd0097 CD |
7603 | { |
7604 | if (rot >= 32) | |
7605 | macro_build ((char *) NULL, &icnt, NULL, "dror32", | |
7606 | "d,w,<", dreg, sreg, rot - 32); | |
7607 | else | |
7608 | macro_build ((char *) NULL, &icnt, NULL, "dror", | |
7609 | "d,w,<", dreg, sreg, rot); | |
7610 | return; | |
7611 | } | |
483fc7cd | 7612 | if (rot == 0) |
483fc7cd | 7613 | { |
82dd0097 CD |
7614 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "dsrl", |
7615 | "d,w,<", dreg, sreg, 0); | |
7616 | return; | |
483fc7cd | 7617 | } |
82dd0097 CD |
7618 | r = (rot < 0x20) ? "dsrl" : "dsrl32"; |
7619 | l = ((0x40 - rot) < 0x20) ? "dsll" : "dsll32"; | |
7620 | rot &= 0x1f; | |
7621 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, r, | |
7622 | "d,w,<", AT, sreg, rot); | |
7623 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, l, | |
7624 | "d,w,<", dreg, sreg, (0x20 - rot) & 0x1f); | |
7625 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "or", | |
7626 | "d,v,t", dreg, dreg, AT); | |
771c7ce4 TS |
7627 | } |
7628 | break; | |
7629 | ||
252b5132 | 7630 | case M_ROR_I: |
771c7ce4 TS |
7631 | { |
7632 | unsigned int rot; | |
7633 | ||
7634 | if (imm_expr.X_op != O_constant) | |
82dd0097 | 7635 | as_bad (_("Improper rotate count")); |
771c7ce4 | 7636 | rot = imm_expr.X_add_number & 0x1f; |
af7ee8bf | 7637 | if (ISA_HAS_ROR (mips_opts.isa) || CPU_HAS_ROR (mips_arch)) |
82dd0097 CD |
7638 | { |
7639 | macro_build ((char *) NULL, &icnt, NULL, "ror", | |
7640 | "d,w,<", dreg, sreg, rot); | |
7641 | return; | |
7642 | } | |
483fc7cd | 7643 | if (rot == 0) |
483fc7cd RS |
7644 | { |
7645 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "srl", | |
82dd0097 CD |
7646 | "d,w,<", dreg, sreg, 0); |
7647 | return; | |
483fc7cd | 7648 | } |
82dd0097 CD |
7649 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "srl", |
7650 | "d,w,<", AT, sreg, rot); | |
7651 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "sll", | |
7652 | "d,w,<", dreg, sreg, (0x20 - rot) & 0x1f); | |
7653 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "or", | |
7654 | "d,v,t", dreg, dreg, AT); | |
771c7ce4 | 7655 | } |
252b5132 RH |
7656 | break; |
7657 | ||
7658 | case M_S_DOB: | |
ec68c924 | 7659 | if (mips_arch == CPU_R4650) |
252b5132 RH |
7660 | { |
7661 | as_bad (_("opcode not supported on this processor")); | |
7662 | return; | |
7663 | } | |
e7af610e | 7664 | assert (mips_opts.isa == ISA_MIPS1); |
252b5132 RH |
7665 | /* Even on a big endian machine $fn comes before $fn+1. We have |
7666 | to adjust when storing to memory. */ | |
7667 | macro_build ((char *) NULL, &icnt, &offset_expr, "swc1", "T,o(b)", | |
7668 | target_big_endian ? treg + 1 : treg, | |
7669 | (int) BFD_RELOC_LO16, breg); | |
7670 | offset_expr.X_add_number += 4; | |
7671 | macro_build ((char *) NULL, &icnt, &offset_expr, "swc1", "T,o(b)", | |
7672 | target_big_endian ? treg : treg + 1, | |
7673 | (int) BFD_RELOC_LO16, breg); | |
7674 | return; | |
7675 | ||
7676 | case M_SEQ: | |
7677 | if (sreg == 0) | |
7678 | macro_build ((char *) NULL, &icnt, &expr1, "sltiu", "t,r,j", dreg, | |
7679 | treg, (int) BFD_RELOC_LO16); | |
7680 | else if (treg == 0) | |
7681 | macro_build ((char *) NULL, &icnt, &expr1, "sltiu", "t,r,j", dreg, | |
7682 | sreg, (int) BFD_RELOC_LO16); | |
7683 | else | |
7684 | { | |
2396cfb9 TS |
7685 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "xor", |
7686 | "d,v,t", dreg, sreg, treg); | |
252b5132 RH |
7687 | macro_build ((char *) NULL, &icnt, &expr1, "sltiu", "t,r,j", dreg, |
7688 | dreg, (int) BFD_RELOC_LO16); | |
7689 | } | |
7690 | return; | |
7691 | ||
7692 | case M_SEQ_I: | |
7693 | if (imm_expr.X_op == O_constant && imm_expr.X_add_number == 0) | |
7694 | { | |
7695 | macro_build ((char *) NULL, &icnt, &expr1, "sltiu", "t,r,j", dreg, | |
7696 | sreg, (int) BFD_RELOC_LO16); | |
7697 | return; | |
7698 | } | |
7699 | if (sreg == 0) | |
7700 | { | |
7701 | as_warn (_("Instruction %s: result is always false"), | |
7702 | ip->insn_mo->name); | |
ea1fb5dc | 7703 | move_register (&icnt, dreg, 0); |
252b5132 RH |
7704 | return; |
7705 | } | |
7706 | if (imm_expr.X_op == O_constant | |
7707 | && imm_expr.X_add_number >= 0 | |
7708 | && imm_expr.X_add_number < 0x10000) | |
7709 | { | |
7710 | macro_build ((char *) NULL, &icnt, &imm_expr, "xori", "t,r,i", dreg, | |
7711 | sreg, (int) BFD_RELOC_LO16); | |
7712 | used_at = 0; | |
7713 | } | |
7714 | else if (imm_expr.X_op == O_constant | |
7715 | && imm_expr.X_add_number > -0x8000 | |
7716 | && imm_expr.X_add_number < 0) | |
7717 | { | |
7718 | imm_expr.X_add_number = -imm_expr.X_add_number; | |
7719 | macro_build ((char *) NULL, &icnt, &imm_expr, | |
ca4e0257 | 7720 | HAVE_32BIT_GPRS ? "addiu" : "daddiu", |
252b5132 RH |
7721 | "t,r,j", dreg, sreg, |
7722 | (int) BFD_RELOC_LO16); | |
7723 | used_at = 0; | |
7724 | } | |
7725 | else | |
7726 | { | |
4d34fb5f | 7727 | load_register (&icnt, AT, &imm_expr, HAVE_64BIT_GPRS); |
2396cfb9 TS |
7728 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "xor", |
7729 | "d,v,t", dreg, sreg, AT); | |
252b5132 RH |
7730 | used_at = 1; |
7731 | } | |
7732 | macro_build ((char *) NULL, &icnt, &expr1, "sltiu", "t,r,j", dreg, dreg, | |
7733 | (int) BFD_RELOC_LO16); | |
7734 | if (used_at) | |
7735 | break; | |
7736 | return; | |
7737 | ||
7738 | case M_SGE: /* sreg >= treg <==> not (sreg < treg) */ | |
7739 | s = "slt"; | |
7740 | goto sge; | |
7741 | case M_SGEU: | |
7742 | s = "sltu"; | |
7743 | sge: | |
2396cfb9 TS |
7744 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, s, "d,v,t", |
7745 | dreg, sreg, treg); | |
252b5132 RH |
7746 | macro_build ((char *) NULL, &icnt, &expr1, "xori", "t,r,i", dreg, dreg, |
7747 | (int) BFD_RELOC_LO16); | |
7748 | return; | |
7749 | ||
7750 | case M_SGE_I: /* sreg >= I <==> not (sreg < I) */ | |
7751 | case M_SGEU_I: | |
7752 | if (imm_expr.X_op == O_constant | |
7753 | && imm_expr.X_add_number >= -0x8000 | |
7754 | && imm_expr.X_add_number < 0x8000) | |
7755 | { | |
7756 | macro_build ((char *) NULL, &icnt, &imm_expr, | |
7757 | mask == M_SGE_I ? "slti" : "sltiu", | |
7758 | "t,r,j", dreg, sreg, (int) BFD_RELOC_LO16); | |
7759 | used_at = 0; | |
7760 | } | |
7761 | else | |
7762 | { | |
4d34fb5f | 7763 | load_register (&icnt, AT, &imm_expr, HAVE_64BIT_GPRS); |
2396cfb9 TS |
7764 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, |
7765 | mask == M_SGE_I ? "slt" : "sltu", "d,v,t", dreg, sreg, | |
7766 | AT); | |
252b5132 RH |
7767 | used_at = 1; |
7768 | } | |
7769 | macro_build ((char *) NULL, &icnt, &expr1, "xori", "t,r,i", dreg, dreg, | |
7770 | (int) BFD_RELOC_LO16); | |
7771 | if (used_at) | |
7772 | break; | |
7773 | return; | |
7774 | ||
7775 | case M_SGT: /* sreg > treg <==> treg < sreg */ | |
7776 | s = "slt"; | |
7777 | goto sgt; | |
7778 | case M_SGTU: | |
7779 | s = "sltu"; | |
7780 | sgt: | |
2396cfb9 TS |
7781 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, s, "d,v,t", |
7782 | dreg, treg, sreg); | |
252b5132 RH |
7783 | return; |
7784 | ||
7785 | case M_SGT_I: /* sreg > I <==> I < sreg */ | |
7786 | s = "slt"; | |
7787 | goto sgti; | |
7788 | case M_SGTU_I: | |
7789 | s = "sltu"; | |
7790 | sgti: | |
4d34fb5f | 7791 | load_register (&icnt, AT, &imm_expr, HAVE_64BIT_GPRS); |
2396cfb9 TS |
7792 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, s, "d,v,t", |
7793 | dreg, AT, sreg); | |
252b5132 RH |
7794 | break; |
7795 | ||
2396cfb9 | 7796 | case M_SLE: /* sreg <= treg <==> treg >= sreg <==> not (treg < sreg) */ |
252b5132 RH |
7797 | s = "slt"; |
7798 | goto sle; | |
7799 | case M_SLEU: | |
7800 | s = "sltu"; | |
7801 | sle: | |
2396cfb9 TS |
7802 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, s, "d,v,t", |
7803 | dreg, treg, sreg); | |
252b5132 RH |
7804 | macro_build ((char *) NULL, &icnt, &expr1, "xori", "t,r,i", dreg, dreg, |
7805 | (int) BFD_RELOC_LO16); | |
7806 | return; | |
7807 | ||
2396cfb9 | 7808 | case M_SLE_I: /* sreg <= I <==> I >= sreg <==> not (I < sreg) */ |
252b5132 RH |
7809 | s = "slt"; |
7810 | goto slei; | |
7811 | case M_SLEU_I: | |
7812 | s = "sltu"; | |
7813 | slei: | |
4d34fb5f | 7814 | load_register (&icnt, AT, &imm_expr, HAVE_64BIT_GPRS); |
2396cfb9 TS |
7815 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, s, "d,v,t", |
7816 | dreg, AT, sreg); | |
252b5132 RH |
7817 | macro_build ((char *) NULL, &icnt, &expr1, "xori", "t,r,i", dreg, dreg, |
7818 | (int) BFD_RELOC_LO16); | |
7819 | break; | |
7820 | ||
7821 | case M_SLT_I: | |
7822 | if (imm_expr.X_op == O_constant | |
7823 | && imm_expr.X_add_number >= -0x8000 | |
7824 | && imm_expr.X_add_number < 0x8000) | |
7825 | { | |
7826 | macro_build ((char *) NULL, &icnt, &imm_expr, "slti", "t,r,j", | |
7827 | dreg, sreg, (int) BFD_RELOC_LO16); | |
7828 | return; | |
7829 | } | |
4d34fb5f | 7830 | load_register (&icnt, AT, &imm_expr, HAVE_64BIT_GPRS); |
2396cfb9 TS |
7831 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "slt", "d,v,t", |
7832 | dreg, sreg, AT); | |
252b5132 RH |
7833 | break; |
7834 | ||
7835 | case M_SLTU_I: | |
7836 | if (imm_expr.X_op == O_constant | |
7837 | && imm_expr.X_add_number >= -0x8000 | |
7838 | && imm_expr.X_add_number < 0x8000) | |
7839 | { | |
7840 | macro_build ((char *) NULL, &icnt, &imm_expr, "sltiu", "t,r,j", | |
7841 | dreg, sreg, (int) BFD_RELOC_LO16); | |
7842 | return; | |
7843 | } | |
4d34fb5f | 7844 | load_register (&icnt, AT, &imm_expr, HAVE_64BIT_GPRS); |
2396cfb9 TS |
7845 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "sltu", |
7846 | "d,v,t", dreg, sreg, AT); | |
252b5132 RH |
7847 | break; |
7848 | ||
7849 | case M_SNE: | |
7850 | if (sreg == 0) | |
2396cfb9 TS |
7851 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "sltu", |
7852 | "d,v,t", dreg, 0, treg); | |
252b5132 | 7853 | else if (treg == 0) |
2396cfb9 TS |
7854 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "sltu", |
7855 | "d,v,t", dreg, 0, sreg); | |
252b5132 RH |
7856 | else |
7857 | { | |
2396cfb9 TS |
7858 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "xor", |
7859 | "d,v,t", dreg, sreg, treg); | |
7860 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "sltu", | |
7861 | "d,v,t", dreg, 0, dreg); | |
252b5132 RH |
7862 | } |
7863 | return; | |
7864 | ||
7865 | case M_SNE_I: | |
7866 | if (imm_expr.X_op == O_constant && imm_expr.X_add_number == 0) | |
7867 | { | |
2396cfb9 TS |
7868 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "sltu", |
7869 | "d,v,t", dreg, 0, sreg); | |
252b5132 RH |
7870 | return; |
7871 | } | |
7872 | if (sreg == 0) | |
7873 | { | |
7874 | as_warn (_("Instruction %s: result is always true"), | |
7875 | ip->insn_mo->name); | |
7876 | macro_build ((char *) NULL, &icnt, &expr1, | |
ca4e0257 | 7877 | HAVE_32BIT_GPRS ? "addiu" : "daddiu", |
252b5132 RH |
7878 | "t,r,j", dreg, 0, (int) BFD_RELOC_LO16); |
7879 | return; | |
7880 | } | |
7881 | if (imm_expr.X_op == O_constant | |
7882 | && imm_expr.X_add_number >= 0 | |
7883 | && imm_expr.X_add_number < 0x10000) | |
7884 | { | |
7885 | macro_build ((char *) NULL, &icnt, &imm_expr, "xori", "t,r,i", | |
7886 | dreg, sreg, (int) BFD_RELOC_LO16); | |
7887 | used_at = 0; | |
7888 | } | |
7889 | else if (imm_expr.X_op == O_constant | |
7890 | && imm_expr.X_add_number > -0x8000 | |
7891 | && imm_expr.X_add_number < 0) | |
7892 | { | |
7893 | imm_expr.X_add_number = -imm_expr.X_add_number; | |
7894 | macro_build ((char *) NULL, &icnt, &imm_expr, | |
ca4e0257 | 7895 | HAVE_32BIT_GPRS ? "addiu" : "daddiu", |
252b5132 RH |
7896 | "t,r,j", dreg, sreg, (int) BFD_RELOC_LO16); |
7897 | used_at = 0; | |
7898 | } | |
7899 | else | |
7900 | { | |
4d34fb5f | 7901 | load_register (&icnt, AT, &imm_expr, HAVE_64BIT_GPRS); |
2396cfb9 TS |
7902 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "xor", |
7903 | "d,v,t", dreg, sreg, AT); | |
252b5132 RH |
7904 | used_at = 1; |
7905 | } | |
2396cfb9 TS |
7906 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "sltu", |
7907 | "d,v,t", dreg, 0, dreg); | |
252b5132 RH |
7908 | if (used_at) |
7909 | break; | |
7910 | return; | |
7911 | ||
7912 | case M_DSUB_I: | |
7913 | dbl = 1; | |
7914 | case M_SUB_I: | |
7915 | if (imm_expr.X_op == O_constant | |
7916 | && imm_expr.X_add_number > -0x8000 | |
7917 | && imm_expr.X_add_number <= 0x8000) | |
7918 | { | |
7919 | imm_expr.X_add_number = -imm_expr.X_add_number; | |
7920 | macro_build ((char *) NULL, &icnt, &imm_expr, | |
7921 | dbl ? "daddi" : "addi", | |
7922 | "t,r,j", dreg, sreg, (int) BFD_RELOC_LO16); | |
7923 | return; | |
7924 | } | |
7925 | load_register (&icnt, AT, &imm_expr, dbl); | |
2396cfb9 | 7926 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, |
9a41af64 | 7927 | dbl ? "dsub" : "sub", "d,v,t", dreg, sreg, AT); |
252b5132 RH |
7928 | break; |
7929 | ||
7930 | case M_DSUBU_I: | |
7931 | dbl = 1; | |
7932 | case M_SUBU_I: | |
7933 | if (imm_expr.X_op == O_constant | |
7934 | && imm_expr.X_add_number > -0x8000 | |
7935 | && imm_expr.X_add_number <= 0x8000) | |
7936 | { | |
7937 | imm_expr.X_add_number = -imm_expr.X_add_number; | |
7938 | macro_build ((char *) NULL, &icnt, &imm_expr, | |
7939 | dbl ? "daddiu" : "addiu", | |
7940 | "t,r,j", dreg, sreg, (int) BFD_RELOC_LO16); | |
7941 | return; | |
7942 | } | |
7943 | load_register (&icnt, AT, &imm_expr, dbl); | |
2396cfb9 | 7944 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, |
9a41af64 | 7945 | dbl ? "dsubu" : "subu", "d,v,t", dreg, sreg, AT); |
252b5132 RH |
7946 | break; |
7947 | ||
7948 | case M_TEQ_I: | |
7949 | s = "teq"; | |
7950 | goto trap; | |
7951 | case M_TGE_I: | |
7952 | s = "tge"; | |
7953 | goto trap; | |
7954 | case M_TGEU_I: | |
7955 | s = "tgeu"; | |
7956 | goto trap; | |
7957 | case M_TLT_I: | |
7958 | s = "tlt"; | |
7959 | goto trap; | |
7960 | case M_TLTU_I: | |
7961 | s = "tltu"; | |
7962 | goto trap; | |
7963 | case M_TNE_I: | |
7964 | s = "tne"; | |
7965 | trap: | |
4d34fb5f | 7966 | load_register (&icnt, AT, &imm_expr, HAVE_64BIT_GPRS); |
2396cfb9 TS |
7967 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, s, "s,t", sreg, |
7968 | AT); | |
252b5132 RH |
7969 | break; |
7970 | ||
252b5132 | 7971 | case M_TRUNCWS: |
43841e91 | 7972 | case M_TRUNCWD: |
e7af610e | 7973 | assert (mips_opts.isa == ISA_MIPS1); |
252b5132 RH |
7974 | sreg = (ip->insn_opcode >> 11) & 0x1f; /* floating reg */ |
7975 | dreg = (ip->insn_opcode >> 06) & 0x1f; /* floating reg */ | |
7976 | ||
7977 | /* | |
7978 | * Is the double cfc1 instruction a bug in the mips assembler; | |
7979 | * or is there a reason for it? | |
7980 | */ | |
b34976b6 | 7981 | mips_emit_delays (TRUE); |
252b5132 RH |
7982 | ++mips_opts.noreorder; |
7983 | mips_any_noreorder = 1; | |
2396cfb9 | 7984 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "cfc1", "t,G", |
f9419b05 | 7985 | treg, RA); |
2396cfb9 | 7986 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "cfc1", "t,G", |
f9419b05 | 7987 | treg, RA); |
2396cfb9 | 7988 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "nop", ""); |
252b5132 RH |
7989 | expr1.X_add_number = 3; |
7990 | macro_build ((char *) NULL, &icnt, &expr1, "ori", "t,r,i", AT, treg, | |
7991 | (int) BFD_RELOC_LO16); | |
7992 | expr1.X_add_number = 2; | |
7993 | macro_build ((char *) NULL, &icnt, &expr1, "xori", "t,r,i", AT, AT, | |
7994 | (int) BFD_RELOC_LO16); | |
2396cfb9 | 7995 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "ctc1", "t,G", |
f9419b05 | 7996 | AT, RA); |
2396cfb9 TS |
7997 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "nop", ""); |
7998 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, | |
252b5132 | 7999 | mask == M_TRUNCWD ? "cvt.w.d" : "cvt.w.s", "D,S", dreg, sreg); |
2396cfb9 | 8000 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "ctc1", "t,G", |
f9419b05 | 8001 | treg, RA); |
2396cfb9 | 8002 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "nop", ""); |
252b5132 RH |
8003 | --mips_opts.noreorder; |
8004 | break; | |
8005 | ||
8006 | case M_ULH: | |
8007 | s = "lb"; | |
8008 | goto ulh; | |
8009 | case M_ULHU: | |
8010 | s = "lbu"; | |
8011 | ulh: | |
8012 | if (offset_expr.X_add_number >= 0x7fff) | |
8013 | as_bad (_("operand overflow")); | |
252b5132 | 8014 | if (! target_big_endian) |
f9419b05 | 8015 | ++offset_expr.X_add_number; |
af22f5b2 | 8016 | macro_build ((char *) NULL, &icnt, &offset_expr, s, "t,o(b)", AT, |
252b5132 RH |
8017 | (int) BFD_RELOC_LO16, breg); |
8018 | if (! target_big_endian) | |
f9419b05 | 8019 | --offset_expr.X_add_number; |
252b5132 | 8020 | else |
f9419b05 | 8021 | ++offset_expr.X_add_number; |
af22f5b2 | 8022 | macro_build ((char *) NULL, &icnt, &offset_expr, "lbu", "t,o(b)", treg, |
252b5132 | 8023 | (int) BFD_RELOC_LO16, breg); |
2396cfb9 | 8024 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "sll", "d,w,<", |
af22f5b2 | 8025 | AT, AT, 8); |
2396cfb9 TS |
8026 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "or", "d,v,t", |
8027 | treg, treg, AT); | |
252b5132 RH |
8028 | break; |
8029 | ||
8030 | case M_ULD: | |
8031 | s = "ldl"; | |
8032 | s2 = "ldr"; | |
8033 | off = 7; | |
8034 | goto ulw; | |
8035 | case M_ULW: | |
8036 | s = "lwl"; | |
8037 | s2 = "lwr"; | |
8038 | off = 3; | |
8039 | ulw: | |
8040 | if (offset_expr.X_add_number >= 0x8000 - off) | |
8041 | as_bad (_("operand overflow")); | |
af22f5b2 CD |
8042 | if (treg != breg) |
8043 | tempreg = treg; | |
8044 | else | |
8045 | tempreg = AT; | |
252b5132 RH |
8046 | if (! target_big_endian) |
8047 | offset_expr.X_add_number += off; | |
af22f5b2 | 8048 | macro_build ((char *) NULL, &icnt, &offset_expr, s, "t,o(b)", tempreg, |
252b5132 RH |
8049 | (int) BFD_RELOC_LO16, breg); |
8050 | if (! target_big_endian) | |
8051 | offset_expr.X_add_number -= off; | |
8052 | else | |
8053 | offset_expr.X_add_number += off; | |
af22f5b2 | 8054 | macro_build ((char *) NULL, &icnt, &offset_expr, s2, "t,o(b)", tempreg, |
252b5132 | 8055 | (int) BFD_RELOC_LO16, breg); |
af22f5b2 CD |
8056 | |
8057 | /* If necessary, move the result in tempreg the final destination. */ | |
8058 | if (treg == tempreg) | |
8059 | return; | |
8060 | /* Protect second load's delay slot. */ | |
8061 | if (!gpr_interlocks) | |
8062 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "nop", ""); | |
8063 | move_register (&icnt, treg, tempreg); | |
8064 | break; | |
252b5132 RH |
8065 | |
8066 | case M_ULD_A: | |
8067 | s = "ldl"; | |
8068 | s2 = "ldr"; | |
8069 | off = 7; | |
8070 | goto ulwa; | |
8071 | case M_ULW_A: | |
8072 | s = "lwl"; | |
8073 | s2 = "lwr"; | |
8074 | off = 3; | |
8075 | ulwa: | |
d6bc6245 | 8076 | used_at = 1; |
c9914766 | 8077 | load_address (&icnt, AT, &offset_expr, &used_at); |
252b5132 RH |
8078 | if (breg != 0) |
8079 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, | |
f5040a92 AO |
8080 | HAVE_32BIT_ADDRESSES ? HAVE_NEWABI |
8081 | ? "add" : "addu" : "daddu", | |
252b5132 RH |
8082 | "d,v,t", AT, AT, breg); |
8083 | if (! target_big_endian) | |
8084 | expr1.X_add_number = off; | |
8085 | else | |
8086 | expr1.X_add_number = 0; | |
8087 | macro_build ((char *) NULL, &icnt, &expr1, s, "t,o(b)", treg, | |
8088 | (int) BFD_RELOC_LO16, AT); | |
8089 | if (! target_big_endian) | |
8090 | expr1.X_add_number = 0; | |
8091 | else | |
8092 | expr1.X_add_number = off; | |
8093 | macro_build ((char *) NULL, &icnt, &expr1, s2, "t,o(b)", treg, | |
8094 | (int) BFD_RELOC_LO16, AT); | |
8095 | break; | |
8096 | ||
8097 | case M_ULH_A: | |
8098 | case M_ULHU_A: | |
d6bc6245 | 8099 | used_at = 1; |
c9914766 | 8100 | load_address (&icnt, AT, &offset_expr, &used_at); |
252b5132 RH |
8101 | if (breg != 0) |
8102 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, | |
f5040a92 AO |
8103 | HAVE_32BIT_ADDRESSES ? HAVE_NEWABI |
8104 | ? "add" : "addu" : "daddu", | |
252b5132 RH |
8105 | "d,v,t", AT, AT, breg); |
8106 | if (target_big_endian) | |
8107 | expr1.X_add_number = 0; | |
8108 | macro_build ((char *) NULL, &icnt, &expr1, | |
8109 | mask == M_ULH_A ? "lb" : "lbu", "t,o(b)", treg, | |
8110 | (int) BFD_RELOC_LO16, AT); | |
8111 | if (target_big_endian) | |
8112 | expr1.X_add_number = 1; | |
8113 | else | |
8114 | expr1.X_add_number = 0; | |
8115 | macro_build ((char *) NULL, &icnt, &expr1, "lbu", "t,o(b)", AT, | |
8116 | (int) BFD_RELOC_LO16, AT); | |
2396cfb9 TS |
8117 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "sll", "d,w,<", |
8118 | treg, treg, 8); | |
8119 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "or", "d,v,t", | |
8120 | treg, treg, AT); | |
252b5132 RH |
8121 | break; |
8122 | ||
8123 | case M_USH: | |
8124 | if (offset_expr.X_add_number >= 0x7fff) | |
8125 | as_bad (_("operand overflow")); | |
8126 | if (target_big_endian) | |
f9419b05 | 8127 | ++offset_expr.X_add_number; |
252b5132 RH |
8128 | macro_build ((char *) NULL, &icnt, &offset_expr, "sb", "t,o(b)", treg, |
8129 | (int) BFD_RELOC_LO16, breg); | |
2396cfb9 TS |
8130 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "srl", "d,w,<", |
8131 | AT, treg, 8); | |
252b5132 | 8132 | if (target_big_endian) |
f9419b05 | 8133 | --offset_expr.X_add_number; |
252b5132 | 8134 | else |
f9419b05 | 8135 | ++offset_expr.X_add_number; |
252b5132 RH |
8136 | macro_build ((char *) NULL, &icnt, &offset_expr, "sb", "t,o(b)", AT, |
8137 | (int) BFD_RELOC_LO16, breg); | |
8138 | break; | |
8139 | ||
8140 | case M_USD: | |
8141 | s = "sdl"; | |
8142 | s2 = "sdr"; | |
8143 | off = 7; | |
8144 | goto usw; | |
8145 | case M_USW: | |
8146 | s = "swl"; | |
8147 | s2 = "swr"; | |
8148 | off = 3; | |
8149 | usw: | |
8150 | if (offset_expr.X_add_number >= 0x8000 - off) | |
8151 | as_bad (_("operand overflow")); | |
8152 | if (! target_big_endian) | |
8153 | offset_expr.X_add_number += off; | |
8154 | macro_build ((char *) NULL, &icnt, &offset_expr, s, "t,o(b)", treg, | |
8155 | (int) BFD_RELOC_LO16, breg); | |
8156 | if (! target_big_endian) | |
8157 | offset_expr.X_add_number -= off; | |
8158 | else | |
8159 | offset_expr.X_add_number += off; | |
8160 | macro_build ((char *) NULL, &icnt, &offset_expr, s2, "t,o(b)", treg, | |
8161 | (int) BFD_RELOC_LO16, breg); | |
8162 | return; | |
8163 | ||
8164 | case M_USD_A: | |
8165 | s = "sdl"; | |
8166 | s2 = "sdr"; | |
8167 | off = 7; | |
8168 | goto uswa; | |
8169 | case M_USW_A: | |
8170 | s = "swl"; | |
8171 | s2 = "swr"; | |
8172 | off = 3; | |
8173 | uswa: | |
d6bc6245 | 8174 | used_at = 1; |
c9914766 | 8175 | load_address (&icnt, AT, &offset_expr, &used_at); |
252b5132 RH |
8176 | if (breg != 0) |
8177 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, | |
f5040a92 AO |
8178 | HAVE_32BIT_ADDRESSES ? HAVE_NEWABI |
8179 | ? "add" : "addu" : "daddu", | |
252b5132 RH |
8180 | "d,v,t", AT, AT, breg); |
8181 | if (! target_big_endian) | |
8182 | expr1.X_add_number = off; | |
8183 | else | |
8184 | expr1.X_add_number = 0; | |
8185 | macro_build ((char *) NULL, &icnt, &expr1, s, "t,o(b)", treg, | |
8186 | (int) BFD_RELOC_LO16, AT); | |
8187 | if (! target_big_endian) | |
8188 | expr1.X_add_number = 0; | |
8189 | else | |
8190 | expr1.X_add_number = off; | |
8191 | macro_build ((char *) NULL, &icnt, &expr1, s2, "t,o(b)", treg, | |
8192 | (int) BFD_RELOC_LO16, AT); | |
8193 | break; | |
8194 | ||
8195 | case M_USH_A: | |
d6bc6245 | 8196 | used_at = 1; |
c9914766 | 8197 | load_address (&icnt, AT, &offset_expr, &used_at); |
252b5132 RH |
8198 | if (breg != 0) |
8199 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, | |
f5040a92 AO |
8200 | HAVE_32BIT_ADDRESSES ? HAVE_NEWABI |
8201 | ? "add" : "addu" : "daddu", | |
252b5132 RH |
8202 | "d,v,t", AT, AT, breg); |
8203 | if (! target_big_endian) | |
8204 | expr1.X_add_number = 0; | |
8205 | macro_build ((char *) NULL, &icnt, &expr1, "sb", "t,o(b)", treg, | |
8206 | (int) BFD_RELOC_LO16, AT); | |
2396cfb9 TS |
8207 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "srl", "d,w,<", |
8208 | treg, treg, 8); | |
252b5132 RH |
8209 | if (! target_big_endian) |
8210 | expr1.X_add_number = 1; | |
8211 | else | |
8212 | expr1.X_add_number = 0; | |
8213 | macro_build ((char *) NULL, &icnt, &expr1, "sb", "t,o(b)", treg, | |
8214 | (int) BFD_RELOC_LO16, AT); | |
8215 | if (! target_big_endian) | |
8216 | expr1.X_add_number = 0; | |
8217 | else | |
8218 | expr1.X_add_number = 1; | |
8219 | macro_build ((char *) NULL, &icnt, &expr1, "lbu", "t,o(b)", AT, | |
8220 | (int) BFD_RELOC_LO16, AT); | |
2396cfb9 TS |
8221 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "sll", "d,w,<", |
8222 | treg, treg, 8); | |
8223 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "or", "d,v,t", | |
8224 | treg, treg, AT); | |
252b5132 RH |
8225 | break; |
8226 | ||
8227 | default: | |
8228 | /* FIXME: Check if this is one of the itbl macros, since they | |
bdaaa2e1 | 8229 | are added dynamically. */ |
252b5132 RH |
8230 | as_bad (_("Macro %s not implemented yet"), ip->insn_mo->name); |
8231 | break; | |
8232 | } | |
8233 | if (mips_opts.noat) | |
8234 | as_warn (_("Macro used $at after \".set noat\"")); | |
8235 | } | |
8236 | ||
8237 | /* Implement macros in mips16 mode. */ | |
8238 | ||
8239 | static void | |
8240 | mips16_macro (ip) | |
8241 | struct mips_cl_insn *ip; | |
8242 | { | |
8243 | int mask; | |
8244 | int xreg, yreg, zreg, tmp; | |
8245 | int icnt; | |
8246 | expressionS expr1; | |
8247 | int dbl; | |
8248 | const char *s, *s2, *s3; | |
8249 | ||
8250 | mask = ip->insn_mo->mask; | |
8251 | ||
8252 | xreg = (ip->insn_opcode >> MIPS16OP_SH_RX) & MIPS16OP_MASK_RX; | |
8253 | yreg = (ip->insn_opcode >> MIPS16OP_SH_RY) & MIPS16OP_MASK_RY; | |
8254 | zreg = (ip->insn_opcode >> MIPS16OP_SH_RZ) & MIPS16OP_MASK_RZ; | |
8255 | ||
8256 | icnt = 0; | |
8257 | ||
8258 | expr1.X_op = O_constant; | |
8259 | expr1.X_op_symbol = NULL; | |
8260 | expr1.X_add_symbol = NULL; | |
8261 | expr1.X_add_number = 1; | |
8262 | ||
8263 | dbl = 0; | |
8264 | ||
8265 | switch (mask) | |
8266 | { | |
8267 | default: | |
8268 | internalError (); | |
8269 | ||
8270 | case M_DDIV_3: | |
8271 | dbl = 1; | |
8272 | case M_DIV_3: | |
8273 | s = "mflo"; | |
8274 | goto do_div3; | |
8275 | case M_DREM_3: | |
8276 | dbl = 1; | |
8277 | case M_REM_3: | |
8278 | s = "mfhi"; | |
8279 | do_div3: | |
b34976b6 | 8280 | mips_emit_delays (TRUE); |
252b5132 RH |
8281 | ++mips_opts.noreorder; |
8282 | mips_any_noreorder = 1; | |
2396cfb9 | 8283 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, |
252b5132 RH |
8284 | dbl ? "ddiv" : "div", |
8285 | "0,x,y", xreg, yreg); | |
8286 | expr1.X_add_number = 2; | |
8287 | macro_build ((char *) NULL, &icnt, &expr1, "bnez", "x,p", yreg); | |
2396cfb9 TS |
8288 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "break", "6", |
8289 | 7); | |
bdaaa2e1 | 8290 | |
252b5132 RH |
8291 | /* FIXME: The normal code checks for of -1 / -0x80000000 here, |
8292 | since that causes an overflow. We should do that as well, | |
8293 | but I don't see how to do the comparisons without a temporary | |
8294 | register. */ | |
8295 | --mips_opts.noreorder; | |
2396cfb9 | 8296 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, s, "x", zreg); |
252b5132 RH |
8297 | break; |
8298 | ||
8299 | case M_DIVU_3: | |
8300 | s = "divu"; | |
8301 | s2 = "mflo"; | |
8302 | goto do_divu3; | |
8303 | case M_REMU_3: | |
8304 | s = "divu"; | |
8305 | s2 = "mfhi"; | |
8306 | goto do_divu3; | |
8307 | case M_DDIVU_3: | |
8308 | s = "ddivu"; | |
8309 | s2 = "mflo"; | |
8310 | goto do_divu3; | |
8311 | case M_DREMU_3: | |
8312 | s = "ddivu"; | |
8313 | s2 = "mfhi"; | |
8314 | do_divu3: | |
b34976b6 | 8315 | mips_emit_delays (TRUE); |
252b5132 RH |
8316 | ++mips_opts.noreorder; |
8317 | mips_any_noreorder = 1; | |
2396cfb9 TS |
8318 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, s, "0,x,y", |
8319 | xreg, yreg); | |
252b5132 RH |
8320 | expr1.X_add_number = 2; |
8321 | macro_build ((char *) NULL, &icnt, &expr1, "bnez", "x,p", yreg); | |
98d3f06f KH |
8322 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "break", |
8323 | "6", 7); | |
252b5132 | 8324 | --mips_opts.noreorder; |
2396cfb9 | 8325 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, s2, "x", zreg); |
252b5132 RH |
8326 | break; |
8327 | ||
8328 | case M_DMUL: | |
8329 | dbl = 1; | |
8330 | case M_MUL: | |
2396cfb9 | 8331 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, |
9a41af64 | 8332 | dbl ? "dmultu" : "multu", "x,y", xreg, yreg); |
2396cfb9 TS |
8333 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "mflo", "x", |
8334 | zreg); | |
252b5132 RH |
8335 | return; |
8336 | ||
8337 | case M_DSUBU_I: | |
8338 | dbl = 1; | |
8339 | goto do_subu; | |
8340 | case M_SUBU_I: | |
8341 | do_subu: | |
8342 | if (imm_expr.X_op != O_constant) | |
8343 | as_bad (_("Unsupported large constant")); | |
8344 | imm_expr.X_add_number = -imm_expr.X_add_number; | |
8345 | macro_build ((char *) NULL, &icnt, &imm_expr, | |
9a41af64 | 8346 | dbl ? "daddiu" : "addiu", "y,x,4", yreg, xreg); |
252b5132 RH |
8347 | break; |
8348 | ||
8349 | case M_SUBU_I_2: | |
8350 | if (imm_expr.X_op != O_constant) | |
8351 | as_bad (_("Unsupported large constant")); | |
8352 | imm_expr.X_add_number = -imm_expr.X_add_number; | |
8353 | macro_build ((char *) NULL, &icnt, &imm_expr, "addiu", | |
8354 | "x,k", xreg); | |
8355 | break; | |
8356 | ||
8357 | case M_DSUBU_I_2: | |
8358 | if (imm_expr.X_op != O_constant) | |
8359 | as_bad (_("Unsupported large constant")); | |
8360 | imm_expr.X_add_number = -imm_expr.X_add_number; | |
8361 | macro_build ((char *) NULL, &icnt, &imm_expr, "daddiu", | |
8362 | "y,j", yreg); | |
8363 | break; | |
8364 | ||
8365 | case M_BEQ: | |
8366 | s = "cmp"; | |
8367 | s2 = "bteqz"; | |
8368 | goto do_branch; | |
8369 | case M_BNE: | |
8370 | s = "cmp"; | |
8371 | s2 = "btnez"; | |
8372 | goto do_branch; | |
8373 | case M_BLT: | |
8374 | s = "slt"; | |
8375 | s2 = "btnez"; | |
8376 | goto do_branch; | |
8377 | case M_BLTU: | |
8378 | s = "sltu"; | |
8379 | s2 = "btnez"; | |
8380 | goto do_branch; | |
8381 | case M_BLE: | |
8382 | s = "slt"; | |
8383 | s2 = "bteqz"; | |
8384 | goto do_reverse_branch; | |
8385 | case M_BLEU: | |
8386 | s = "sltu"; | |
8387 | s2 = "bteqz"; | |
8388 | goto do_reverse_branch; | |
8389 | case M_BGE: | |
8390 | s = "slt"; | |
8391 | s2 = "bteqz"; | |
8392 | goto do_branch; | |
8393 | case M_BGEU: | |
8394 | s = "sltu"; | |
8395 | s2 = "bteqz"; | |
8396 | goto do_branch; | |
8397 | case M_BGT: | |
8398 | s = "slt"; | |
8399 | s2 = "btnez"; | |
8400 | goto do_reverse_branch; | |
8401 | case M_BGTU: | |
8402 | s = "sltu"; | |
8403 | s2 = "btnez"; | |
8404 | ||
8405 | do_reverse_branch: | |
8406 | tmp = xreg; | |
8407 | xreg = yreg; | |
8408 | yreg = tmp; | |
8409 | ||
8410 | do_branch: | |
8411 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, s, "x,y", | |
8412 | xreg, yreg); | |
8413 | macro_build ((char *) NULL, &icnt, &offset_expr, s2, "p"); | |
8414 | break; | |
8415 | ||
8416 | case M_BEQ_I: | |
8417 | s = "cmpi"; | |
8418 | s2 = "bteqz"; | |
8419 | s3 = "x,U"; | |
8420 | goto do_branch_i; | |
8421 | case M_BNE_I: | |
8422 | s = "cmpi"; | |
8423 | s2 = "btnez"; | |
8424 | s3 = "x,U"; | |
8425 | goto do_branch_i; | |
8426 | case M_BLT_I: | |
8427 | s = "slti"; | |
8428 | s2 = "btnez"; | |
8429 | s3 = "x,8"; | |
8430 | goto do_branch_i; | |
8431 | case M_BLTU_I: | |
8432 | s = "sltiu"; | |
8433 | s2 = "btnez"; | |
8434 | s3 = "x,8"; | |
8435 | goto do_branch_i; | |
8436 | case M_BLE_I: | |
8437 | s = "slti"; | |
8438 | s2 = "btnez"; | |
8439 | s3 = "x,8"; | |
8440 | goto do_addone_branch_i; | |
8441 | case M_BLEU_I: | |
8442 | s = "sltiu"; | |
8443 | s2 = "btnez"; | |
8444 | s3 = "x,8"; | |
8445 | goto do_addone_branch_i; | |
8446 | case M_BGE_I: | |
8447 | s = "slti"; | |
8448 | s2 = "bteqz"; | |
8449 | s3 = "x,8"; | |
8450 | goto do_branch_i; | |
8451 | case M_BGEU_I: | |
8452 | s = "sltiu"; | |
8453 | s2 = "bteqz"; | |
8454 | s3 = "x,8"; | |
8455 | goto do_branch_i; | |
8456 | case M_BGT_I: | |
8457 | s = "slti"; | |
8458 | s2 = "bteqz"; | |
8459 | s3 = "x,8"; | |
8460 | goto do_addone_branch_i; | |
8461 | case M_BGTU_I: | |
8462 | s = "sltiu"; | |
8463 | s2 = "bteqz"; | |
8464 | s3 = "x,8"; | |
8465 | ||
8466 | do_addone_branch_i: | |
8467 | if (imm_expr.X_op != O_constant) | |
8468 | as_bad (_("Unsupported large constant")); | |
8469 | ++imm_expr.X_add_number; | |
8470 | ||
8471 | do_branch_i: | |
8472 | macro_build ((char *) NULL, &icnt, &imm_expr, s, s3, xreg); | |
8473 | macro_build ((char *) NULL, &icnt, &offset_expr, s2, "p"); | |
8474 | break; | |
8475 | ||
8476 | case M_ABS: | |
8477 | expr1.X_add_number = 0; | |
98d3f06f | 8478 | macro_build ((char *) NULL, &icnt, &expr1, "slti", "x,8", yreg); |
252b5132 | 8479 | if (xreg != yreg) |
ea1fb5dc | 8480 | move_register (&icnt, xreg, yreg); |
252b5132 RH |
8481 | expr1.X_add_number = 2; |
8482 | macro_build ((char *) NULL, &icnt, &expr1, "bteqz", "p"); | |
8483 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, | |
8484 | "neg", "x,w", xreg, xreg); | |
8485 | } | |
8486 | } | |
8487 | ||
8488 | /* For consistency checking, verify that all bits are specified either | |
8489 | by the match/mask part of the instruction definition, or by the | |
8490 | operand list. */ | |
8491 | static int | |
8492 | validate_mips_insn (opc) | |
8493 | const struct mips_opcode *opc; | |
8494 | { | |
8495 | const char *p = opc->args; | |
8496 | char c; | |
8497 | unsigned long used_bits = opc->mask; | |
8498 | ||
8499 | if ((used_bits & opc->match) != opc->match) | |
8500 | { | |
8501 | as_bad (_("internal: bad mips opcode (mask error): %s %s"), | |
8502 | opc->name, opc->args); | |
8503 | return 0; | |
8504 | } | |
8505 | #define USE_BITS(mask,shift) (used_bits |= ((mask) << (shift))) | |
8506 | while (*p) | |
8507 | switch (c = *p++) | |
8508 | { | |
8509 | case ',': break; | |
8510 | case '(': break; | |
8511 | case ')': break; | |
af7ee8bf CD |
8512 | case '+': |
8513 | switch (c = *p++) | |
8514 | { | |
8515 | case 'A': USE_BITS (OP_MASK_SHAMT, OP_SH_SHAMT); break; | |
8516 | case 'B': USE_BITS (OP_MASK_INSMSB, OP_SH_INSMSB); break; | |
8517 | case 'C': USE_BITS (OP_MASK_EXTMSBD, OP_SH_EXTMSBD); break; | |
bbcc0807 CD |
8518 | case 'D': USE_BITS (OP_MASK_RD, OP_SH_RD); |
8519 | USE_BITS (OP_MASK_SEL, OP_SH_SEL); break; | |
af7ee8bf CD |
8520 | default: |
8521 | as_bad (_("internal: bad mips opcode (unknown extension operand type `+%c'): %s %s"), | |
8522 | c, opc->name, opc->args); | |
8523 | return 0; | |
8524 | } | |
8525 | break; | |
252b5132 RH |
8526 | case '<': USE_BITS (OP_MASK_SHAMT, OP_SH_SHAMT); break; |
8527 | case '>': USE_BITS (OP_MASK_SHAMT, OP_SH_SHAMT); break; | |
8528 | case 'A': break; | |
4372b673 | 8529 | case 'B': USE_BITS (OP_MASK_CODE20, OP_SH_CODE20); break; |
252b5132 RH |
8530 | case 'C': USE_BITS (OP_MASK_COPZ, OP_SH_COPZ); break; |
8531 | case 'D': USE_BITS (OP_MASK_FD, OP_SH_FD); break; | |
8532 | case 'E': USE_BITS (OP_MASK_RT, OP_SH_RT); break; | |
8533 | case 'F': break; | |
8534 | case 'G': USE_BITS (OP_MASK_RD, OP_SH_RD); break; | |
156c2f8b | 8535 | case 'H': USE_BITS (OP_MASK_SEL, OP_SH_SEL); break; |
252b5132 | 8536 | case 'I': break; |
e972090a | 8537 | case 'J': USE_BITS (OP_MASK_CODE19, OP_SH_CODE19); break; |
af7ee8bf | 8538 | case 'K': USE_BITS (OP_MASK_RD, OP_SH_RD); break; |
252b5132 RH |
8539 | case 'L': break; |
8540 | case 'M': USE_BITS (OP_MASK_CCC, OP_SH_CCC); break; | |
8541 | case 'N': USE_BITS (OP_MASK_BCC, OP_SH_BCC); break; | |
deec1734 CD |
8542 | case 'O': USE_BITS (OP_MASK_ALN, OP_SH_ALN); break; |
8543 | case 'Q': USE_BITS (OP_MASK_VSEL, OP_SH_VSEL); | |
8544 | USE_BITS (OP_MASK_FT, OP_SH_FT); break; | |
252b5132 RH |
8545 | case 'R': USE_BITS (OP_MASK_FR, OP_SH_FR); break; |
8546 | case 'S': USE_BITS (OP_MASK_FS, OP_SH_FS); break; | |
8547 | case 'T': USE_BITS (OP_MASK_FT, OP_SH_FT); break; | |
8548 | case 'V': USE_BITS (OP_MASK_FS, OP_SH_FS); break; | |
8549 | case 'W': USE_BITS (OP_MASK_FT, OP_SH_FT); break; | |
deec1734 CD |
8550 | case 'X': USE_BITS (OP_MASK_FD, OP_SH_FD); break; |
8551 | case 'Y': USE_BITS (OP_MASK_FS, OP_SH_FS); break; | |
8552 | case 'Z': USE_BITS (OP_MASK_FT, OP_SH_FT); break; | |
252b5132 RH |
8553 | case 'a': USE_BITS (OP_MASK_TARGET, OP_SH_TARGET); break; |
8554 | case 'b': USE_BITS (OP_MASK_RS, OP_SH_RS); break; | |
8555 | case 'c': USE_BITS (OP_MASK_CODE, OP_SH_CODE); break; | |
8556 | case 'd': USE_BITS (OP_MASK_RD, OP_SH_RD); break; | |
8557 | case 'f': break; | |
8558 | case 'h': USE_BITS (OP_MASK_PREFX, OP_SH_PREFX); break; | |
8559 | case 'i': USE_BITS (OP_MASK_IMMEDIATE, OP_SH_IMMEDIATE); break; | |
8560 | case 'j': USE_BITS (OP_MASK_DELTA, OP_SH_DELTA); break; | |
8561 | case 'k': USE_BITS (OP_MASK_CACHE, OP_SH_CACHE); break; | |
8562 | case 'l': break; | |
8563 | case 'o': USE_BITS (OP_MASK_DELTA, OP_SH_DELTA); break; | |
8564 | case 'p': USE_BITS (OP_MASK_DELTA, OP_SH_DELTA); break; | |
8565 | case 'q': USE_BITS (OP_MASK_CODE2, OP_SH_CODE2); break; | |
8566 | case 'r': USE_BITS (OP_MASK_RS, OP_SH_RS); break; | |
8567 | case 's': USE_BITS (OP_MASK_RS, OP_SH_RS); break; | |
8568 | case 't': USE_BITS (OP_MASK_RT, OP_SH_RT); break; | |
8569 | case 'u': USE_BITS (OP_MASK_IMMEDIATE, OP_SH_IMMEDIATE); break; | |
8570 | case 'v': USE_BITS (OP_MASK_RS, OP_SH_RS); break; | |
8571 | case 'w': USE_BITS (OP_MASK_RT, OP_SH_RT); break; | |
8572 | case 'x': break; | |
8573 | case 'z': break; | |
8574 | case 'P': USE_BITS (OP_MASK_PERFREG, OP_SH_PERFREG); break; | |
4372b673 NC |
8575 | case 'U': USE_BITS (OP_MASK_RD, OP_SH_RD); |
8576 | USE_BITS (OP_MASK_RT, OP_SH_RT); break; | |
60b63b72 RS |
8577 | case 'e': USE_BITS (OP_MASK_VECBYTE, OP_SH_VECBYTE); break; |
8578 | case '%': USE_BITS (OP_MASK_VECALIGN, OP_SH_VECALIGN); break; | |
8579 | case '[': break; | |
8580 | case ']': break; | |
252b5132 RH |
8581 | default: |
8582 | as_bad (_("internal: bad mips opcode (unknown operand type `%c'): %s %s"), | |
8583 | c, opc->name, opc->args); | |
8584 | return 0; | |
8585 | } | |
8586 | #undef USE_BITS | |
8587 | if (used_bits != 0xffffffff) | |
8588 | { | |
8589 | as_bad (_("internal: bad mips opcode (bits 0x%lx undefined): %s %s"), | |
8590 | ~used_bits & 0xffffffff, opc->name, opc->args); | |
8591 | return 0; | |
8592 | } | |
8593 | return 1; | |
8594 | } | |
8595 | ||
8596 | /* This routine assembles an instruction into its binary format. As a | |
8597 | side effect, it sets one of the global variables imm_reloc or | |
8598 | offset_reloc to the type of relocation to do if one of the operands | |
8599 | is an address expression. */ | |
8600 | ||
8601 | static void | |
8602 | mips_ip (str, ip) | |
8603 | char *str; | |
8604 | struct mips_cl_insn *ip; | |
8605 | { | |
8606 | char *s; | |
8607 | const char *args; | |
43841e91 | 8608 | char c = 0; |
252b5132 RH |
8609 | struct mips_opcode *insn; |
8610 | char *argsStart; | |
8611 | unsigned int regno; | |
8612 | unsigned int lastregno = 0; | |
af7ee8bf | 8613 | unsigned int lastpos = 0; |
071742cf | 8614 | unsigned int limlo, limhi; |
252b5132 RH |
8615 | char *s_reset; |
8616 | char save_c = 0; | |
252b5132 RH |
8617 | |
8618 | insn_error = NULL; | |
8619 | ||
8620 | /* If the instruction contains a '.', we first try to match an instruction | |
8621 | including the '.'. Then we try again without the '.'. */ | |
8622 | insn = NULL; | |
3882b010 | 8623 | for (s = str; *s != '\0' && !ISSPACE (*s); ++s) |
252b5132 RH |
8624 | continue; |
8625 | ||
8626 | /* If we stopped on whitespace, then replace the whitespace with null for | |
8627 | the call to hash_find. Save the character we replaced just in case we | |
8628 | have to re-parse the instruction. */ | |
3882b010 | 8629 | if (ISSPACE (*s)) |
252b5132 RH |
8630 | { |
8631 | save_c = *s; | |
8632 | *s++ = '\0'; | |
8633 | } | |
bdaaa2e1 | 8634 | |
252b5132 RH |
8635 | insn = (struct mips_opcode *) hash_find (op_hash, str); |
8636 | ||
8637 | /* If we didn't find the instruction in the opcode table, try again, but | |
8638 | this time with just the instruction up to, but not including the | |
8639 | first '.'. */ | |
8640 | if (insn == NULL) | |
8641 | { | |
bdaaa2e1 | 8642 | /* Restore the character we overwrite above (if any). */ |
252b5132 RH |
8643 | if (save_c) |
8644 | *(--s) = save_c; | |
8645 | ||
8646 | /* Scan up to the first '.' or whitespace. */ | |
3882b010 L |
8647 | for (s = str; |
8648 | *s != '\0' && *s != '.' && !ISSPACE (*s); | |
8649 | ++s) | |
252b5132 RH |
8650 | continue; |
8651 | ||
8652 | /* If we did not find a '.', then we can quit now. */ | |
8653 | if (*s != '.') | |
8654 | { | |
8655 | insn_error = "unrecognized opcode"; | |
8656 | return; | |
8657 | } | |
8658 | ||
8659 | /* Lookup the instruction in the hash table. */ | |
8660 | *s++ = '\0'; | |
8661 | if ((insn = (struct mips_opcode *) hash_find (op_hash, str)) == NULL) | |
8662 | { | |
8663 | insn_error = "unrecognized opcode"; | |
8664 | return; | |
8665 | } | |
252b5132 RH |
8666 | } |
8667 | ||
8668 | argsStart = s; | |
8669 | for (;;) | |
8670 | { | |
b34976b6 | 8671 | bfd_boolean ok; |
252b5132 RH |
8672 | |
8673 | assert (strcmp (insn->name, str) == 0); | |
8674 | ||
1f25f5d3 CD |
8675 | if (OPCODE_IS_MEMBER (insn, |
8676 | (mips_opts.isa | |
3396de36 | 8677 | | (file_ase_mips16 ? INSN_MIPS16 : 0) |
deec1734 | 8678 | | (mips_opts.ase_mdmx ? INSN_MDMX : 0) |
98d3f06f | 8679 | | (mips_opts.ase_mips3d ? INSN_MIPS3D : 0)), |
1f25f5d3 | 8680 | mips_arch)) |
b34976b6 | 8681 | ok = TRUE; |
bdaaa2e1 | 8682 | else |
b34976b6 | 8683 | ok = FALSE; |
bdaaa2e1 | 8684 | |
252b5132 RH |
8685 | if (insn->pinfo != INSN_MACRO) |
8686 | { | |
ec68c924 | 8687 | if (mips_arch == CPU_R4650 && (insn->pinfo & FP_D) != 0) |
b34976b6 | 8688 | ok = FALSE; |
252b5132 RH |
8689 | } |
8690 | ||
8691 | if (! ok) | |
8692 | { | |
8693 | if (insn + 1 < &mips_opcodes[NUMOPCODES] | |
8694 | && strcmp (insn->name, insn[1].name) == 0) | |
8695 | { | |
8696 | ++insn; | |
8697 | continue; | |
8698 | } | |
252b5132 | 8699 | else |
beae10d5 | 8700 | { |
268f6bed L |
8701 | if (!insn_error) |
8702 | { | |
8703 | static char buf[100]; | |
316f5878 RS |
8704 | if (mips_arch_info->is_isa) |
8705 | sprintf (buf, | |
8706 | _("opcode not supported at this ISA level (%s)"), | |
8707 | mips_cpu_info_from_isa (mips_opts.isa)->name); | |
8708 | else | |
8709 | sprintf (buf, | |
8710 | _("opcode not supported on this processor: %s (%s)"), | |
8711 | mips_arch_info->name, | |
8712 | mips_cpu_info_from_isa (mips_opts.isa)->name); | |
268f6bed L |
8713 | insn_error = buf; |
8714 | } | |
8715 | if (save_c) | |
8716 | *(--s) = save_c; | |
2bd7f1f3 | 8717 | return; |
252b5132 | 8718 | } |
252b5132 RH |
8719 | } |
8720 | ||
8721 | ip->insn_mo = insn; | |
8722 | ip->insn_opcode = insn->match; | |
268f6bed | 8723 | insn_error = NULL; |
252b5132 RH |
8724 | for (args = insn->args;; ++args) |
8725 | { | |
deec1734 CD |
8726 | int is_mdmx; |
8727 | ||
ad8d3bb3 | 8728 | s += strspn (s, " \t"); |
deec1734 | 8729 | is_mdmx = 0; |
252b5132 RH |
8730 | switch (*args) |
8731 | { | |
8732 | case '\0': /* end of args */ | |
8733 | if (*s == '\0') | |
8734 | return; | |
8735 | break; | |
8736 | ||
8737 | case ',': | |
8738 | if (*s++ == *args) | |
8739 | continue; | |
8740 | s--; | |
8741 | switch (*++args) | |
8742 | { | |
8743 | case 'r': | |
8744 | case 'v': | |
38487616 | 8745 | ip->insn_opcode |= lastregno << OP_SH_RS; |
252b5132 RH |
8746 | continue; |
8747 | ||
8748 | case 'w': | |
38487616 TS |
8749 | ip->insn_opcode |= lastregno << OP_SH_RT; |
8750 | continue; | |
8751 | ||
252b5132 | 8752 | case 'W': |
38487616 | 8753 | ip->insn_opcode |= lastregno << OP_SH_FT; |
252b5132 RH |
8754 | continue; |
8755 | ||
8756 | case 'V': | |
38487616 | 8757 | ip->insn_opcode |= lastregno << OP_SH_FS; |
252b5132 RH |
8758 | continue; |
8759 | } | |
8760 | break; | |
8761 | ||
8762 | case '(': | |
8763 | /* Handle optional base register. | |
8764 | Either the base register is omitted or | |
bdaaa2e1 | 8765 | we must have a left paren. */ |
252b5132 RH |
8766 | /* This is dependent on the next operand specifier |
8767 | is a base register specification. */ | |
8768 | assert (args[1] == 'b' || args[1] == '5' | |
8769 | || args[1] == '-' || args[1] == '4'); | |
8770 | if (*s == '\0') | |
8771 | return; | |
8772 | ||
8773 | case ')': /* these must match exactly */ | |
60b63b72 RS |
8774 | case '[': |
8775 | case ']': | |
252b5132 RH |
8776 | if (*s++ == *args) |
8777 | continue; | |
8778 | break; | |
8779 | ||
af7ee8bf CD |
8780 | case '+': /* Opcode extension character. */ |
8781 | switch (*++args) | |
8782 | { | |
071742cf CD |
8783 | case 'A': /* ins/ext position, becomes LSB. */ |
8784 | limlo = 0; | |
8785 | limhi = 31; | |
8786 | my_getExpression (&imm_expr, s); | |
8787 | check_absolute_expr (ip, &imm_expr); | |
8788 | if ((unsigned long) imm_expr.X_add_number < limlo | |
8789 | || (unsigned long) imm_expr.X_add_number > limhi) | |
8790 | { | |
8791 | as_bad (_("Improper position (%lu)"), | |
8792 | (unsigned long) imm_expr.X_add_number); | |
8793 | imm_expr.X_add_number = limlo; | |
8794 | } | |
8795 | lastpos = imm_expr.X_add_number; | |
8796 | ip->insn_opcode |= (imm_expr.X_add_number | |
8797 | & OP_MASK_SHAMT) << OP_SH_SHAMT; | |
8798 | imm_expr.X_op = O_absent; | |
8799 | s = expr_end; | |
8800 | continue; | |
8801 | ||
8802 | case 'B': /* ins size, becomes MSB. */ | |
8803 | limlo = 1; | |
8804 | limhi = 32; | |
8805 | my_getExpression (&imm_expr, s); | |
8806 | check_absolute_expr (ip, &imm_expr); | |
8807 | /* Check for negative input so that small negative numbers | |
8808 | will not succeed incorrectly. The checks against | |
8809 | (pos+size) transitively check "size" itself, | |
8810 | assuming that "pos" is reasonable. */ | |
8811 | if ((long) imm_expr.X_add_number < 0 | |
8812 | || ((unsigned long) imm_expr.X_add_number | |
8813 | + lastpos) < limlo | |
8814 | || ((unsigned long) imm_expr.X_add_number | |
8815 | + lastpos) > limhi) | |
8816 | { | |
8817 | as_bad (_("Improper insert size (%lu, position %lu)"), | |
8818 | (unsigned long) imm_expr.X_add_number, | |
8819 | (unsigned long) lastpos); | |
8820 | imm_expr.X_add_number = limlo - lastpos; | |
8821 | } | |
8822 | ip->insn_opcode |= ((lastpos + imm_expr.X_add_number - 1) | |
8823 | & OP_MASK_INSMSB) << OP_SH_INSMSB; | |
8824 | imm_expr.X_op = O_absent; | |
8825 | s = expr_end; | |
8826 | continue; | |
8827 | ||
8828 | case 'C': /* ext size, becomes MSBD. */ | |
8829 | limlo = 1; | |
8830 | limhi = 32; | |
8831 | my_getExpression (&imm_expr, s); | |
8832 | check_absolute_expr (ip, &imm_expr); | |
8833 | /* Check for negative input so that small negative numbers | |
8834 | will not succeed incorrectly. The checks against | |
8835 | (pos+size) transitively check "size" itself, | |
8836 | assuming that "pos" is reasonable. */ | |
8837 | if ((long) imm_expr.X_add_number < 0 | |
8838 | || ((unsigned long) imm_expr.X_add_number | |
8839 | + lastpos) < limlo | |
8840 | || ((unsigned long) imm_expr.X_add_number | |
8841 | + lastpos) > limhi) | |
8842 | { | |
8843 | as_bad (_("Improper extract size (%lu, position %lu)"), | |
8844 | (unsigned long) imm_expr.X_add_number, | |
8845 | (unsigned long) lastpos); | |
8846 | imm_expr.X_add_number = limlo - lastpos; | |
8847 | } | |
8848 | ip->insn_opcode |= ((imm_expr.X_add_number - 1) | |
8849 | & OP_MASK_EXTMSBD) << OP_SH_EXTMSBD; | |
8850 | imm_expr.X_op = O_absent; | |
8851 | s = expr_end; | |
8852 | continue; | |
af7ee8bf | 8853 | |
bbcc0807 CD |
8854 | case 'D': |
8855 | /* +D is for disassembly only; never match. */ | |
8856 | break; | |
8857 | ||
af7ee8bf CD |
8858 | default: |
8859 | as_bad (_("internal: bad mips opcode (unknown extension operand type `+%c'): %s %s"), | |
8860 | *args, insn->name, insn->args); | |
8861 | /* Further processing is fruitless. */ | |
8862 | return; | |
8863 | } | |
8864 | break; | |
8865 | ||
252b5132 RH |
8866 | case '<': /* must be at least one digit */ |
8867 | /* | |
8868 | * According to the manual, if the shift amount is greater | |
b6ff326e KH |
8869 | * than 31 or less than 0, then the shift amount should be |
8870 | * mod 32. In reality the mips assembler issues an error. | |
252b5132 RH |
8871 | * We issue a warning and mask out all but the low 5 bits. |
8872 | */ | |
8873 | my_getExpression (&imm_expr, s); | |
8874 | check_absolute_expr (ip, &imm_expr); | |
8875 | if ((unsigned long) imm_expr.X_add_number > 31) | |
8876 | { | |
793b27f4 TS |
8877 | as_warn (_("Improper shift amount (%lu)"), |
8878 | (unsigned long) imm_expr.X_add_number); | |
38487616 | 8879 | imm_expr.X_add_number &= OP_MASK_SHAMT; |
252b5132 | 8880 | } |
38487616 | 8881 | ip->insn_opcode |= imm_expr.X_add_number << OP_SH_SHAMT; |
252b5132 RH |
8882 | imm_expr.X_op = O_absent; |
8883 | s = expr_end; | |
8884 | continue; | |
8885 | ||
8886 | case '>': /* shift amount minus 32 */ | |
8887 | my_getExpression (&imm_expr, s); | |
8888 | check_absolute_expr (ip, &imm_expr); | |
8889 | if ((unsigned long) imm_expr.X_add_number < 32 | |
8890 | || (unsigned long) imm_expr.X_add_number > 63) | |
8891 | break; | |
38487616 | 8892 | ip->insn_opcode |= (imm_expr.X_add_number - 32) << OP_SH_SHAMT; |
252b5132 RH |
8893 | imm_expr.X_op = O_absent; |
8894 | s = expr_end; | |
8895 | continue; | |
8896 | ||
252b5132 RH |
8897 | case 'k': /* cache code */ |
8898 | case 'h': /* prefx code */ | |
8899 | my_getExpression (&imm_expr, s); | |
8900 | check_absolute_expr (ip, &imm_expr); | |
8901 | if ((unsigned long) imm_expr.X_add_number > 31) | |
8902 | { | |
8903 | as_warn (_("Invalid value for `%s' (%lu)"), | |
8904 | ip->insn_mo->name, | |
8905 | (unsigned long) imm_expr.X_add_number); | |
8906 | imm_expr.X_add_number &= 0x1f; | |
8907 | } | |
8908 | if (*args == 'k') | |
8909 | ip->insn_opcode |= imm_expr.X_add_number << OP_SH_CACHE; | |
8910 | else | |
8911 | ip->insn_opcode |= imm_expr.X_add_number << OP_SH_PREFX; | |
8912 | imm_expr.X_op = O_absent; | |
8913 | s = expr_end; | |
8914 | continue; | |
8915 | ||
8916 | case 'c': /* break code */ | |
8917 | my_getExpression (&imm_expr, s); | |
8918 | check_absolute_expr (ip, &imm_expr); | |
793b27f4 | 8919 | if ((unsigned long) imm_expr.X_add_number > 1023) |
252b5132 | 8920 | { |
793b27f4 TS |
8921 | as_warn (_("Illegal break code (%lu)"), |
8922 | (unsigned long) imm_expr.X_add_number); | |
38487616 | 8923 | imm_expr.X_add_number &= OP_MASK_CODE; |
252b5132 | 8924 | } |
38487616 | 8925 | ip->insn_opcode |= imm_expr.X_add_number << OP_SH_CODE; |
252b5132 RH |
8926 | imm_expr.X_op = O_absent; |
8927 | s = expr_end; | |
8928 | continue; | |
8929 | ||
8930 | case 'q': /* lower break code */ | |
8931 | my_getExpression (&imm_expr, s); | |
8932 | check_absolute_expr (ip, &imm_expr); | |
793b27f4 | 8933 | if ((unsigned long) imm_expr.X_add_number > 1023) |
252b5132 | 8934 | { |
793b27f4 TS |
8935 | as_warn (_("Illegal lower break code (%lu)"), |
8936 | (unsigned long) imm_expr.X_add_number); | |
38487616 | 8937 | imm_expr.X_add_number &= OP_MASK_CODE2; |
252b5132 | 8938 | } |
38487616 | 8939 | ip->insn_opcode |= imm_expr.X_add_number << OP_SH_CODE2; |
252b5132 RH |
8940 | imm_expr.X_op = O_absent; |
8941 | s = expr_end; | |
8942 | continue; | |
8943 | ||
4372b673 | 8944 | case 'B': /* 20-bit syscall/break code. */ |
156c2f8b | 8945 | my_getExpression (&imm_expr, s); |
156c2f8b | 8946 | check_absolute_expr (ip, &imm_expr); |
793b27f4 TS |
8947 | if ((unsigned long) imm_expr.X_add_number > OP_MASK_CODE20) |
8948 | as_warn (_("Illegal 20-bit code (%lu)"), | |
8949 | (unsigned long) imm_expr.X_add_number); | |
38487616 | 8950 | ip->insn_opcode |= imm_expr.X_add_number << OP_SH_CODE20; |
252b5132 RH |
8951 | imm_expr.X_op = O_absent; |
8952 | s = expr_end; | |
8953 | continue; | |
8954 | ||
98d3f06f | 8955 | case 'C': /* Coprocessor code */ |
beae10d5 | 8956 | my_getExpression (&imm_expr, s); |
252b5132 | 8957 | check_absolute_expr (ip, &imm_expr); |
98d3f06f | 8958 | if ((unsigned long) imm_expr.X_add_number >= (1 << 25)) |
252b5132 | 8959 | { |
793b27f4 TS |
8960 | as_warn (_("Coproccesor code > 25 bits (%lu)"), |
8961 | (unsigned long) imm_expr.X_add_number); | |
98d3f06f | 8962 | imm_expr.X_add_number &= ((1 << 25) - 1); |
252b5132 | 8963 | } |
beae10d5 KH |
8964 | ip->insn_opcode |= imm_expr.X_add_number; |
8965 | imm_expr.X_op = O_absent; | |
8966 | s = expr_end; | |
8967 | continue; | |
252b5132 | 8968 | |
4372b673 NC |
8969 | case 'J': /* 19-bit wait code. */ |
8970 | my_getExpression (&imm_expr, s); | |
8971 | check_absolute_expr (ip, &imm_expr); | |
793b27f4 TS |
8972 | if ((unsigned long) imm_expr.X_add_number > OP_MASK_CODE19) |
8973 | as_warn (_("Illegal 19-bit code (%lu)"), | |
8974 | (unsigned long) imm_expr.X_add_number); | |
38487616 | 8975 | ip->insn_opcode |= imm_expr.X_add_number << OP_SH_CODE19; |
4372b673 NC |
8976 | imm_expr.X_op = O_absent; |
8977 | s = expr_end; | |
8978 | continue; | |
8979 | ||
252b5132 | 8980 | case 'P': /* Performance register */ |
beae10d5 | 8981 | my_getExpression (&imm_expr, s); |
252b5132 | 8982 | check_absolute_expr (ip, &imm_expr); |
beae10d5 | 8983 | if (imm_expr.X_add_number != 0 && imm_expr.X_add_number != 1) |
252b5132 | 8984 | { |
793b27f4 TS |
8985 | as_warn (_("Invalid performance register (%lu)"), |
8986 | (unsigned long) imm_expr.X_add_number); | |
38487616 | 8987 | imm_expr.X_add_number &= OP_MASK_PERFREG; |
252b5132 | 8988 | } |
38487616 | 8989 | ip->insn_opcode |= (imm_expr.X_add_number << OP_SH_PERFREG); |
beae10d5 KH |
8990 | imm_expr.X_op = O_absent; |
8991 | s = expr_end; | |
8992 | continue; | |
252b5132 RH |
8993 | |
8994 | case 'b': /* base register */ | |
8995 | case 'd': /* destination register */ | |
8996 | case 's': /* source register */ | |
8997 | case 't': /* target register */ | |
8998 | case 'r': /* both target and source */ | |
8999 | case 'v': /* both dest and source */ | |
9000 | case 'w': /* both dest and target */ | |
9001 | case 'E': /* coprocessor target register */ | |
9002 | case 'G': /* coprocessor destination register */ | |
af7ee8bf | 9003 | case 'K': /* 'rdhwr' destination register */ |
252b5132 RH |
9004 | case 'x': /* ignore register name */ |
9005 | case 'z': /* must be zero register */ | |
4372b673 | 9006 | case 'U': /* destination register (clo/clz). */ |
252b5132 RH |
9007 | s_reset = s; |
9008 | if (s[0] == '$') | |
9009 | { | |
9010 | ||
3882b010 | 9011 | if (ISDIGIT (s[1])) |
252b5132 RH |
9012 | { |
9013 | ++s; | |
9014 | regno = 0; | |
9015 | do | |
9016 | { | |
9017 | regno *= 10; | |
9018 | regno += *s - '0'; | |
9019 | ++s; | |
9020 | } | |
3882b010 | 9021 | while (ISDIGIT (*s)); |
252b5132 RH |
9022 | if (regno > 31) |
9023 | as_bad (_("Invalid register number (%d)"), regno); | |
9024 | } | |
af7ee8bf | 9025 | else if (*args == 'E' || *args == 'G' || *args == 'K') |
252b5132 RH |
9026 | goto notreg; |
9027 | else | |
9028 | { | |
76db943d TS |
9029 | if (s[1] == 'r' && s[2] == 'a') |
9030 | { | |
9031 | s += 3; | |
9032 | regno = RA; | |
9033 | } | |
9034 | else if (s[1] == 'f' && s[2] == 'p') | |
252b5132 RH |
9035 | { |
9036 | s += 3; | |
9037 | regno = FP; | |
9038 | } | |
9039 | else if (s[1] == 's' && s[2] == 'p') | |
9040 | { | |
9041 | s += 3; | |
9042 | regno = SP; | |
9043 | } | |
9044 | else if (s[1] == 'g' && s[2] == 'p') | |
9045 | { | |
9046 | s += 3; | |
9047 | regno = GP; | |
9048 | } | |
9049 | else if (s[1] == 'a' && s[2] == 't') | |
9050 | { | |
9051 | s += 3; | |
9052 | regno = AT; | |
9053 | } | |
9054 | else if (s[1] == 'k' && s[2] == 't' && s[3] == '0') | |
9055 | { | |
9056 | s += 4; | |
9057 | regno = KT0; | |
9058 | } | |
9059 | else if (s[1] == 'k' && s[2] == 't' && s[3] == '1') | |
9060 | { | |
9061 | s += 4; | |
9062 | regno = KT1; | |
9063 | } | |
85b51719 TS |
9064 | else if (s[1] == 'z' && s[2] == 'e' && s[3] == 'r' && s[4] == 'o') |
9065 | { | |
9066 | s += 5; | |
9067 | regno = ZERO; | |
9068 | } | |
252b5132 RH |
9069 | else if (itbl_have_entries) |
9070 | { | |
9071 | char *p, *n; | |
d7ba4a77 | 9072 | unsigned long r; |
252b5132 | 9073 | |
d7ba4a77 | 9074 | p = s + 1; /* advance past '$' */ |
252b5132 RH |
9075 | n = itbl_get_field (&p); /* n is name */ |
9076 | ||
d7ba4a77 ILT |
9077 | /* See if this is a register defined in an |
9078 | itbl entry. */ | |
9079 | if (itbl_get_reg_val (n, &r)) | |
252b5132 RH |
9080 | { |
9081 | /* Get_field advances to the start of | |
9082 | the next field, so we need to back | |
d7ba4a77 | 9083 | rack to the end of the last field. */ |
bdaaa2e1 | 9084 | if (p) |
252b5132 | 9085 | s = p - 1; |
bdaaa2e1 | 9086 | else |
d7ba4a77 | 9087 | s = strchr (s, '\0'); |
252b5132 RH |
9088 | regno = r; |
9089 | } | |
9090 | else | |
9091 | goto notreg; | |
beae10d5 | 9092 | } |
252b5132 RH |
9093 | else |
9094 | goto notreg; | |
9095 | } | |
9096 | if (regno == AT | |
9097 | && ! mips_opts.noat | |
9098 | && *args != 'E' | |
af7ee8bf CD |
9099 | && *args != 'G' |
9100 | && *args != 'K') | |
252b5132 RH |
9101 | as_warn (_("Used $at without \".set noat\"")); |
9102 | c = *args; | |
9103 | if (*s == ' ') | |
f9419b05 | 9104 | ++s; |
252b5132 RH |
9105 | if (args[1] != *s) |
9106 | { | |
9107 | if (c == 'r' || c == 'v' || c == 'w') | |
9108 | { | |
9109 | regno = lastregno; | |
9110 | s = s_reset; | |
f9419b05 | 9111 | ++args; |
252b5132 RH |
9112 | } |
9113 | } | |
9114 | /* 'z' only matches $0. */ | |
9115 | if (c == 'z' && regno != 0) | |
9116 | break; | |
9117 | ||
bdaaa2e1 KH |
9118 | /* Now that we have assembled one operand, we use the args string |
9119 | * to figure out where it goes in the instruction. */ | |
252b5132 RH |
9120 | switch (c) |
9121 | { | |
9122 | case 'r': | |
9123 | case 's': | |
9124 | case 'v': | |
9125 | case 'b': | |
38487616 | 9126 | ip->insn_opcode |= regno << OP_SH_RS; |
252b5132 RH |
9127 | break; |
9128 | case 'd': | |
9129 | case 'G': | |
af7ee8bf | 9130 | case 'K': |
38487616 | 9131 | ip->insn_opcode |= regno << OP_SH_RD; |
252b5132 | 9132 | break; |
4372b673 | 9133 | case 'U': |
38487616 TS |
9134 | ip->insn_opcode |= regno << OP_SH_RD; |
9135 | ip->insn_opcode |= regno << OP_SH_RT; | |
4372b673 | 9136 | break; |
252b5132 RH |
9137 | case 'w': |
9138 | case 't': | |
9139 | case 'E': | |
38487616 | 9140 | ip->insn_opcode |= regno << OP_SH_RT; |
252b5132 RH |
9141 | break; |
9142 | case 'x': | |
9143 | /* This case exists because on the r3000 trunc | |
9144 | expands into a macro which requires a gp | |
9145 | register. On the r6000 or r4000 it is | |
9146 | assembled into a single instruction which | |
9147 | ignores the register. Thus the insn version | |
9148 | is MIPS_ISA2 and uses 'x', and the macro | |
9149 | version is MIPS_ISA1 and uses 't'. */ | |
9150 | break; | |
9151 | case 'z': | |
9152 | /* This case is for the div instruction, which | |
9153 | acts differently if the destination argument | |
9154 | is $0. This only matches $0, and is checked | |
9155 | outside the switch. */ | |
9156 | break; | |
9157 | case 'D': | |
9158 | /* Itbl operand; not yet implemented. FIXME ?? */ | |
9159 | break; | |
9160 | /* What about all other operands like 'i', which | |
9161 | can be specified in the opcode table? */ | |
9162 | } | |
9163 | lastregno = regno; | |
9164 | continue; | |
9165 | } | |
9166 | notreg: | |
9167 | switch (*args++) | |
9168 | { | |
9169 | case 'r': | |
9170 | case 'v': | |
38487616 | 9171 | ip->insn_opcode |= lastregno << OP_SH_RS; |
252b5132 RH |
9172 | continue; |
9173 | case 'w': | |
38487616 | 9174 | ip->insn_opcode |= lastregno << OP_SH_RT; |
252b5132 RH |
9175 | continue; |
9176 | } | |
9177 | break; | |
9178 | ||
deec1734 CD |
9179 | case 'O': /* MDMX alignment immediate constant. */ |
9180 | my_getExpression (&imm_expr, s); | |
9181 | check_absolute_expr (ip, &imm_expr); | |
9182 | if ((unsigned long) imm_expr.X_add_number > OP_MASK_ALN) | |
9183 | { | |
9184 | as_warn ("Improper align amount (%ld), using low bits", | |
9185 | (long) imm_expr.X_add_number); | |
9186 | imm_expr.X_add_number &= OP_MASK_ALN; | |
9187 | } | |
9188 | ip->insn_opcode |= imm_expr.X_add_number << OP_SH_ALN; | |
9189 | imm_expr.X_op = O_absent; | |
9190 | s = expr_end; | |
9191 | continue; | |
9192 | ||
9193 | case 'Q': /* MDMX vector, element sel, or const. */ | |
9194 | if (s[0] != '$') | |
9195 | { | |
9196 | /* MDMX Immediate. */ | |
9197 | my_getExpression (&imm_expr, s); | |
9198 | check_absolute_expr (ip, &imm_expr); | |
9199 | if ((unsigned long) imm_expr.X_add_number > OP_MASK_FT) | |
9200 | { | |
9201 | as_warn (_("Invalid MDMX Immediate (%ld)"), | |
9202 | (long) imm_expr.X_add_number); | |
9203 | imm_expr.X_add_number &= OP_MASK_FT; | |
9204 | } | |
9205 | imm_expr.X_add_number &= OP_MASK_FT; | |
9206 | if (ip->insn_opcode & (OP_MASK_VSEL << OP_SH_VSEL)) | |
9207 | ip->insn_opcode |= MDMX_FMTSEL_IMM_QH << OP_SH_VSEL; | |
9208 | else | |
9209 | ip->insn_opcode |= MDMX_FMTSEL_IMM_OB << OP_SH_VSEL; | |
9210 | ip->insn_opcode |= imm_expr.X_add_number << OP_SH_FT; | |
9211 | imm_expr.X_op = O_absent; | |
9212 | s = expr_end; | |
9213 | continue; | |
9214 | } | |
9215 | /* Not MDMX Immediate. Fall through. */ | |
9216 | case 'X': /* MDMX destination register. */ | |
9217 | case 'Y': /* MDMX source register. */ | |
9218 | case 'Z': /* MDMX target register. */ | |
9219 | is_mdmx = 1; | |
252b5132 RH |
9220 | case 'D': /* floating point destination register */ |
9221 | case 'S': /* floating point source register */ | |
9222 | case 'T': /* floating point target register */ | |
9223 | case 'R': /* floating point source register */ | |
9224 | case 'V': | |
9225 | case 'W': | |
9226 | s_reset = s; | |
deec1734 CD |
9227 | /* Accept $fN for FP and MDMX register numbers, and in |
9228 | addition accept $vN for MDMX register numbers. */ | |
9229 | if ((s[0] == '$' && s[1] == 'f' && ISDIGIT (s[2])) | |
9230 | || (is_mdmx != 0 && s[0] == '$' && s[1] == 'v' | |
9231 | && ISDIGIT (s[2]))) | |
252b5132 RH |
9232 | { |
9233 | s += 2; | |
9234 | regno = 0; | |
9235 | do | |
9236 | { | |
9237 | regno *= 10; | |
9238 | regno += *s - '0'; | |
9239 | ++s; | |
9240 | } | |
3882b010 | 9241 | while (ISDIGIT (*s)); |
252b5132 RH |
9242 | |
9243 | if (regno > 31) | |
9244 | as_bad (_("Invalid float register number (%d)"), regno); | |
9245 | ||
9246 | if ((regno & 1) != 0 | |
ca4e0257 | 9247 | && HAVE_32BIT_FPRS |
252b5132 RH |
9248 | && ! (strcmp (str, "mtc1") == 0 |
9249 | || strcmp (str, "mfc1") == 0 | |
9250 | || strcmp (str, "lwc1") == 0 | |
9251 | || strcmp (str, "swc1") == 0 | |
9252 | || strcmp (str, "l.s") == 0 | |
9253 | || strcmp (str, "s.s") == 0)) | |
9254 | as_warn (_("Float register should be even, was %d"), | |
9255 | regno); | |
9256 | ||
9257 | c = *args; | |
9258 | if (*s == ' ') | |
f9419b05 | 9259 | ++s; |
252b5132 RH |
9260 | if (args[1] != *s) |
9261 | { | |
9262 | if (c == 'V' || c == 'W') | |
9263 | { | |
9264 | regno = lastregno; | |
9265 | s = s_reset; | |
f9419b05 | 9266 | ++args; |
252b5132 RH |
9267 | } |
9268 | } | |
9269 | switch (c) | |
9270 | { | |
9271 | case 'D': | |
deec1734 | 9272 | case 'X': |
38487616 | 9273 | ip->insn_opcode |= regno << OP_SH_FD; |
252b5132 RH |
9274 | break; |
9275 | case 'V': | |
9276 | case 'S': | |
deec1734 | 9277 | case 'Y': |
38487616 | 9278 | ip->insn_opcode |= regno << OP_SH_FS; |
252b5132 | 9279 | break; |
deec1734 CD |
9280 | case 'Q': |
9281 | /* This is like 'Z', but also needs to fix the MDMX | |
9282 | vector/scalar select bits. Note that the | |
9283 | scalar immediate case is handled above. */ | |
9284 | if (*s == '[') | |
9285 | { | |
9286 | int is_qh = (ip->insn_opcode & (1 << OP_SH_VSEL)); | |
9287 | int max_el = (is_qh ? 3 : 7); | |
9288 | s++; | |
9289 | my_getExpression(&imm_expr, s); | |
9290 | check_absolute_expr (ip, &imm_expr); | |
9291 | s = expr_end; | |
9292 | if (imm_expr.X_add_number > max_el) | |
9293 | as_bad(_("Bad element selector %ld"), | |
9294 | (long) imm_expr.X_add_number); | |
9295 | imm_expr.X_add_number &= max_el; | |
9296 | ip->insn_opcode |= (imm_expr.X_add_number | |
9297 | << (OP_SH_VSEL + | |
9298 | (is_qh ? 2 : 1))); | |
9299 | if (*s != ']') | |
9300 | as_warn(_("Expecting ']' found '%s'"), s); | |
9301 | else | |
9302 | s++; | |
9303 | } | |
9304 | else | |
9305 | { | |
9306 | if (ip->insn_opcode & (OP_MASK_VSEL << OP_SH_VSEL)) | |
9307 | ip->insn_opcode |= (MDMX_FMTSEL_VEC_QH | |
9308 | << OP_SH_VSEL); | |
9309 | else | |
9310 | ip->insn_opcode |= (MDMX_FMTSEL_VEC_OB << | |
9311 | OP_SH_VSEL); | |
9312 | } | |
9313 | /* Fall through */ | |
252b5132 RH |
9314 | case 'W': |
9315 | case 'T': | |
deec1734 | 9316 | case 'Z': |
38487616 | 9317 | ip->insn_opcode |= regno << OP_SH_FT; |
252b5132 RH |
9318 | break; |
9319 | case 'R': | |
38487616 | 9320 | ip->insn_opcode |= regno << OP_SH_FR; |
252b5132 RH |
9321 | break; |
9322 | } | |
9323 | lastregno = regno; | |
9324 | continue; | |
9325 | } | |
9326 | ||
252b5132 RH |
9327 | switch (*args++) |
9328 | { | |
9329 | case 'V': | |
38487616 | 9330 | ip->insn_opcode |= lastregno << OP_SH_FS; |
252b5132 RH |
9331 | continue; |
9332 | case 'W': | |
38487616 | 9333 | ip->insn_opcode |= lastregno << OP_SH_FT; |
252b5132 RH |
9334 | continue; |
9335 | } | |
9336 | break; | |
9337 | ||
9338 | case 'I': | |
9339 | my_getExpression (&imm_expr, s); | |
9340 | if (imm_expr.X_op != O_big | |
9341 | && imm_expr.X_op != O_constant) | |
9342 | insn_error = _("absolute expression required"); | |
9343 | s = expr_end; | |
9344 | continue; | |
9345 | ||
9346 | case 'A': | |
9347 | my_getExpression (&offset_expr, s); | |
f6688943 | 9348 | *imm_reloc = BFD_RELOC_32; |
252b5132 RH |
9349 | s = expr_end; |
9350 | continue; | |
9351 | ||
9352 | case 'F': | |
9353 | case 'L': | |
9354 | case 'f': | |
9355 | case 'l': | |
9356 | { | |
9357 | int f64; | |
ca4e0257 | 9358 | int using_gprs; |
252b5132 RH |
9359 | char *save_in; |
9360 | char *err; | |
9361 | unsigned char temp[8]; | |
9362 | int len; | |
9363 | unsigned int length; | |
9364 | segT seg; | |
9365 | subsegT subseg; | |
9366 | char *p; | |
9367 | ||
9368 | /* These only appear as the last operand in an | |
9369 | instruction, and every instruction that accepts | |
9370 | them in any variant accepts them in all variants. | |
9371 | This means we don't have to worry about backing out | |
9372 | any changes if the instruction does not match. | |
9373 | ||
9374 | The difference between them is the size of the | |
9375 | floating point constant and where it goes. For 'F' | |
9376 | and 'L' the constant is 64 bits; for 'f' and 'l' it | |
9377 | is 32 bits. Where the constant is placed is based | |
9378 | on how the MIPS assembler does things: | |
9379 | F -- .rdata | |
9380 | L -- .lit8 | |
9381 | f -- immediate value | |
9382 | l -- .lit4 | |
9383 | ||
9384 | The .lit4 and .lit8 sections are only used if | |
9385 | permitted by the -G argument. | |
9386 | ||
9387 | When generating embedded PIC code, we use the | |
9388 | .lit8 section but not the .lit4 section (we can do | |
9389 | .lit4 inline easily; we need to put .lit8 | |
9390 | somewhere in the data segment, and using .lit8 | |
9391 | permits the linker to eventually combine identical | |
ca4e0257 RS |
9392 | .lit8 entries). |
9393 | ||
9394 | The code below needs to know whether the target register | |
9395 | is 32 or 64 bits wide. It relies on the fact 'f' and | |
9396 | 'F' are used with GPR-based instructions and 'l' and | |
9397 | 'L' are used with FPR-based instructions. */ | |
252b5132 RH |
9398 | |
9399 | f64 = *args == 'F' || *args == 'L'; | |
ca4e0257 | 9400 | using_gprs = *args == 'F' || *args == 'f'; |
252b5132 RH |
9401 | |
9402 | save_in = input_line_pointer; | |
9403 | input_line_pointer = s; | |
9404 | err = md_atof (f64 ? 'd' : 'f', (char *) temp, &len); | |
9405 | length = len; | |
9406 | s = input_line_pointer; | |
9407 | input_line_pointer = save_in; | |
9408 | if (err != NULL && *err != '\0') | |
9409 | { | |
9410 | as_bad (_("Bad floating point constant: %s"), err); | |
9411 | memset (temp, '\0', sizeof temp); | |
9412 | length = f64 ? 8 : 4; | |
9413 | } | |
9414 | ||
156c2f8b | 9415 | assert (length == (unsigned) (f64 ? 8 : 4)); |
252b5132 RH |
9416 | |
9417 | if (*args == 'f' | |
9418 | || (*args == 'l' | |
9419 | && (! USE_GLOBAL_POINTER_OPT | |
9420 | || mips_pic == EMBEDDED_PIC | |
9421 | || g_switch_value < 4 | |
9422 | || (temp[0] == 0 && temp[1] == 0) | |
9423 | || (temp[2] == 0 && temp[3] == 0)))) | |
9424 | { | |
9425 | imm_expr.X_op = O_constant; | |
9426 | if (! target_big_endian) | |
9427 | imm_expr.X_add_number = bfd_getl32 (temp); | |
9428 | else | |
9429 | imm_expr.X_add_number = bfd_getb32 (temp); | |
9430 | } | |
9431 | else if (length > 4 | |
119d663a | 9432 | && ! mips_disable_float_construction |
ca4e0257 RS |
9433 | /* Constants can only be constructed in GPRs and |
9434 | copied to FPRs if the GPRs are at least as wide | |
9435 | as the FPRs. Force the constant into memory if | |
9436 | we are using 64-bit FPRs but the GPRs are only | |
9437 | 32 bits wide. */ | |
9438 | && (using_gprs | |
9439 | || ! (HAVE_64BIT_FPRS && HAVE_32BIT_GPRS)) | |
252b5132 RH |
9440 | && ((temp[0] == 0 && temp[1] == 0) |
9441 | || (temp[2] == 0 && temp[3] == 0)) | |
9442 | && ((temp[4] == 0 && temp[5] == 0) | |
9443 | || (temp[6] == 0 && temp[7] == 0))) | |
9444 | { | |
ca4e0257 RS |
9445 | /* The value is simple enough to load with a couple of |
9446 | instructions. If using 32-bit registers, set | |
9447 | imm_expr to the high order 32 bits and offset_expr to | |
9448 | the low order 32 bits. Otherwise, set imm_expr to | |
9449 | the entire 64 bit constant. */ | |
9450 | if (using_gprs ? HAVE_32BIT_GPRS : HAVE_32BIT_FPRS) | |
252b5132 RH |
9451 | { |
9452 | imm_expr.X_op = O_constant; | |
9453 | offset_expr.X_op = O_constant; | |
9454 | if (! target_big_endian) | |
9455 | { | |
9456 | imm_expr.X_add_number = bfd_getl32 (temp + 4); | |
9457 | offset_expr.X_add_number = bfd_getl32 (temp); | |
9458 | } | |
9459 | else | |
9460 | { | |
9461 | imm_expr.X_add_number = bfd_getb32 (temp); | |
9462 | offset_expr.X_add_number = bfd_getb32 (temp + 4); | |
9463 | } | |
9464 | if (offset_expr.X_add_number == 0) | |
9465 | offset_expr.X_op = O_absent; | |
9466 | } | |
9467 | else if (sizeof (imm_expr.X_add_number) > 4) | |
9468 | { | |
9469 | imm_expr.X_op = O_constant; | |
9470 | if (! target_big_endian) | |
9471 | imm_expr.X_add_number = bfd_getl64 (temp); | |
9472 | else | |
9473 | imm_expr.X_add_number = bfd_getb64 (temp); | |
9474 | } | |
9475 | else | |
9476 | { | |
9477 | imm_expr.X_op = O_big; | |
9478 | imm_expr.X_add_number = 4; | |
9479 | if (! target_big_endian) | |
9480 | { | |
9481 | generic_bignum[0] = bfd_getl16 (temp); | |
9482 | generic_bignum[1] = bfd_getl16 (temp + 2); | |
9483 | generic_bignum[2] = bfd_getl16 (temp + 4); | |
9484 | generic_bignum[3] = bfd_getl16 (temp + 6); | |
9485 | } | |
9486 | else | |
9487 | { | |
9488 | generic_bignum[0] = bfd_getb16 (temp + 6); | |
9489 | generic_bignum[1] = bfd_getb16 (temp + 4); | |
9490 | generic_bignum[2] = bfd_getb16 (temp + 2); | |
9491 | generic_bignum[3] = bfd_getb16 (temp); | |
9492 | } | |
9493 | } | |
9494 | } | |
9495 | else | |
9496 | { | |
9497 | const char *newname; | |
9498 | segT new_seg; | |
9499 | ||
9500 | /* Switch to the right section. */ | |
9501 | seg = now_seg; | |
9502 | subseg = now_subseg; | |
9503 | switch (*args) | |
9504 | { | |
9505 | default: /* unused default case avoids warnings. */ | |
9506 | case 'L': | |
9507 | newname = RDATA_SECTION_NAME; | |
bb2d6cd7 GK |
9508 | if ((USE_GLOBAL_POINTER_OPT && g_switch_value >= 8) |
9509 | || mips_pic == EMBEDDED_PIC) | |
252b5132 RH |
9510 | newname = ".lit8"; |
9511 | break; | |
9512 | case 'F': | |
bb2d6cd7 GK |
9513 | if (mips_pic == EMBEDDED_PIC) |
9514 | newname = ".lit8"; | |
9515 | else | |
9516 | newname = RDATA_SECTION_NAME; | |
252b5132 RH |
9517 | break; |
9518 | case 'l': | |
9519 | assert (!USE_GLOBAL_POINTER_OPT | |
9520 | || g_switch_value >= 4); | |
9521 | newname = ".lit4"; | |
9522 | break; | |
9523 | } | |
9524 | new_seg = subseg_new (newname, (subsegT) 0); | |
9525 | if (OUTPUT_FLAVOR == bfd_target_elf_flavour) | |
9526 | bfd_set_section_flags (stdoutput, new_seg, | |
9527 | (SEC_ALLOC | |
9528 | | SEC_LOAD | |
9529 | | SEC_READONLY | |
9530 | | SEC_DATA)); | |
9531 | frag_align (*args == 'l' ? 2 : 3, 0, 0); | |
9532 | if (OUTPUT_FLAVOR == bfd_target_elf_flavour | |
9533 | && strcmp (TARGET_OS, "elf") != 0) | |
9534 | record_alignment (new_seg, 4); | |
9535 | else | |
9536 | record_alignment (new_seg, *args == 'l' ? 2 : 3); | |
9537 | if (seg == now_seg) | |
9538 | as_bad (_("Can't use floating point insn in this section")); | |
9539 | ||
9540 | /* Set the argument to the current address in the | |
9541 | section. */ | |
9542 | offset_expr.X_op = O_symbol; | |
9543 | offset_expr.X_add_symbol = | |
9544 | symbol_new ("L0\001", now_seg, | |
9545 | (valueT) frag_now_fix (), frag_now); | |
9546 | offset_expr.X_add_number = 0; | |
9547 | ||
9548 | /* Put the floating point number into the section. */ | |
9549 | p = frag_more ((int) length); | |
9550 | memcpy (p, temp, length); | |
9551 | ||
9552 | /* Switch back to the original section. */ | |
9553 | subseg_set (seg, subseg); | |
9554 | } | |
9555 | } | |
9556 | continue; | |
9557 | ||
9558 | case 'i': /* 16 bit unsigned immediate */ | |
9559 | case 'j': /* 16 bit signed immediate */ | |
f6688943 | 9560 | *imm_reloc = BFD_RELOC_LO16; |
5e0116d5 | 9561 | if (my_getSmallExpression (&imm_expr, imm_reloc, s) == 0) |
252b5132 RH |
9562 | { |
9563 | int more; | |
5e0116d5 RS |
9564 | offsetT minval, maxval; |
9565 | ||
9566 | more = (insn + 1 < &mips_opcodes[NUMOPCODES] | |
9567 | && strcmp (insn->name, insn[1].name) == 0); | |
9568 | ||
9569 | /* If the expression was written as an unsigned number, | |
9570 | only treat it as signed if there are no more | |
9571 | alternatives. */ | |
9572 | if (more | |
9573 | && *args == 'j' | |
9574 | && sizeof (imm_expr.X_add_number) <= 4 | |
9575 | && imm_expr.X_op == O_constant | |
9576 | && imm_expr.X_add_number < 0 | |
9577 | && imm_expr.X_unsigned | |
9578 | && HAVE_64BIT_GPRS) | |
9579 | break; | |
9580 | ||
9581 | /* For compatibility with older assemblers, we accept | |
9582 | 0x8000-0xffff as signed 16-bit numbers when only | |
9583 | signed numbers are allowed. */ | |
9584 | if (*args == 'i') | |
9585 | minval = 0, maxval = 0xffff; | |
9586 | else if (more) | |
9587 | minval = -0x8000, maxval = 0x7fff; | |
252b5132 | 9588 | else |
5e0116d5 RS |
9589 | minval = -0x8000, maxval = 0xffff; |
9590 | ||
9591 | if (imm_expr.X_op != O_constant | |
9592 | || imm_expr.X_add_number < minval | |
9593 | || imm_expr.X_add_number > maxval) | |
252b5132 RH |
9594 | { |
9595 | if (more) | |
9596 | break; | |
2ae7e77b AH |
9597 | if (imm_expr.X_op == O_constant |
9598 | || imm_expr.X_op == O_big) | |
5e0116d5 | 9599 | as_bad (_("expression out of range")); |
252b5132 RH |
9600 | } |
9601 | } | |
9602 | s = expr_end; | |
9603 | continue; | |
9604 | ||
9605 | case 'o': /* 16 bit offset */ | |
5e0116d5 RS |
9606 | /* Check whether there is only a single bracketed expression |
9607 | left. If so, it must be the base register and the | |
9608 | constant must be zero. */ | |
9609 | if (*s == '(' && strchr (s + 1, '(') == 0) | |
9610 | { | |
9611 | offset_expr.X_op = O_constant; | |
9612 | offset_expr.X_add_number = 0; | |
9613 | continue; | |
9614 | } | |
252b5132 RH |
9615 | |
9616 | /* If this value won't fit into a 16 bit offset, then go | |
9617 | find a macro that will generate the 32 bit offset | |
afdbd6d0 | 9618 | code pattern. */ |
5e0116d5 | 9619 | if (my_getSmallExpression (&offset_expr, offset_reloc, s) == 0 |
252b5132 RH |
9620 | && (offset_expr.X_op != O_constant |
9621 | || offset_expr.X_add_number >= 0x8000 | |
afdbd6d0 | 9622 | || offset_expr.X_add_number < -0x8000)) |
252b5132 RH |
9623 | break; |
9624 | ||
252b5132 RH |
9625 | s = expr_end; |
9626 | continue; | |
9627 | ||
9628 | case 'p': /* pc relative offset */ | |
0b25d3e6 | 9629 | *offset_reloc = BFD_RELOC_16_PCREL_S2; |
252b5132 RH |
9630 | my_getExpression (&offset_expr, s); |
9631 | s = expr_end; | |
9632 | continue; | |
9633 | ||
9634 | case 'u': /* upper 16 bits */ | |
5e0116d5 RS |
9635 | if (my_getSmallExpression (&imm_expr, imm_reloc, s) == 0 |
9636 | && imm_expr.X_op == O_constant | |
9637 | && (imm_expr.X_add_number < 0 | |
9638 | || imm_expr.X_add_number >= 0x10000)) | |
252b5132 RH |
9639 | as_bad (_("lui expression not in range 0..65535")); |
9640 | s = expr_end; | |
9641 | continue; | |
9642 | ||
9643 | case 'a': /* 26 bit address */ | |
9644 | my_getExpression (&offset_expr, s); | |
9645 | s = expr_end; | |
f6688943 | 9646 | *offset_reloc = BFD_RELOC_MIPS_JMP; |
252b5132 RH |
9647 | continue; |
9648 | ||
9649 | case 'N': /* 3 bit branch condition code */ | |
9650 | case 'M': /* 3 bit compare condition code */ | |
9651 | if (strncmp (s, "$fcc", 4) != 0) | |
9652 | break; | |
9653 | s += 4; | |
9654 | regno = 0; | |
9655 | do | |
9656 | { | |
9657 | regno *= 10; | |
9658 | regno += *s - '0'; | |
9659 | ++s; | |
9660 | } | |
3882b010 | 9661 | while (ISDIGIT (*s)); |
252b5132 RH |
9662 | if (regno > 7) |
9663 | as_bad (_("invalid condition code register $fcc%d"), regno); | |
9664 | if (*args == 'N') | |
9665 | ip->insn_opcode |= regno << OP_SH_BCC; | |
9666 | else | |
9667 | ip->insn_opcode |= regno << OP_SH_CCC; | |
beae10d5 | 9668 | continue; |
252b5132 | 9669 | |
156c2f8b NC |
9670 | case 'H': |
9671 | if (s[0] == '0' && (s[1] == 'x' || s[1] == 'X')) | |
9672 | s += 2; | |
3882b010 | 9673 | if (ISDIGIT (*s)) |
156c2f8b NC |
9674 | { |
9675 | c = 0; | |
9676 | do | |
9677 | { | |
9678 | c *= 10; | |
9679 | c += *s - '0'; | |
9680 | ++s; | |
9681 | } | |
3882b010 | 9682 | while (ISDIGIT (*s)); |
156c2f8b NC |
9683 | } |
9684 | else | |
9685 | c = 8; /* Invalid sel value. */ | |
9686 | ||
9687 | if (c > 7) | |
9688 | as_bad (_("invalid coprocessor sub-selection value (0-7)")); | |
9689 | ip->insn_opcode |= c; | |
9690 | continue; | |
9691 | ||
60b63b72 RS |
9692 | case 'e': |
9693 | /* Must be at least one digit. */ | |
9694 | my_getExpression (&imm_expr, s); | |
9695 | check_absolute_expr (ip, &imm_expr); | |
9696 | ||
9697 | if ((unsigned long) imm_expr.X_add_number | |
9698 | > (unsigned long) OP_MASK_VECBYTE) | |
9699 | { | |
9700 | as_bad (_("bad byte vector index (%ld)"), | |
9701 | (long) imm_expr.X_add_number); | |
9702 | imm_expr.X_add_number = 0; | |
9703 | } | |
9704 | ||
9705 | ip->insn_opcode |= imm_expr.X_add_number << OP_SH_VECBYTE; | |
9706 | imm_expr.X_op = O_absent; | |
9707 | s = expr_end; | |
9708 | continue; | |
9709 | ||
9710 | case '%': | |
9711 | my_getExpression (&imm_expr, s); | |
9712 | check_absolute_expr (ip, &imm_expr); | |
9713 | ||
9714 | if ((unsigned long) imm_expr.X_add_number | |
9715 | > (unsigned long) OP_MASK_VECALIGN) | |
9716 | { | |
9717 | as_bad (_("bad byte vector index (%ld)"), | |
9718 | (long) imm_expr.X_add_number); | |
9719 | imm_expr.X_add_number = 0; | |
9720 | } | |
9721 | ||
9722 | ip->insn_opcode |= imm_expr.X_add_number << OP_SH_VECALIGN; | |
9723 | imm_expr.X_op = O_absent; | |
9724 | s = expr_end; | |
9725 | continue; | |
9726 | ||
252b5132 RH |
9727 | default: |
9728 | as_bad (_("bad char = '%c'\n"), *args); | |
9729 | internalError (); | |
9730 | } | |
9731 | break; | |
9732 | } | |
9733 | /* Args don't match. */ | |
9734 | if (insn + 1 < &mips_opcodes[NUMOPCODES] && | |
9735 | !strcmp (insn->name, insn[1].name)) | |
9736 | { | |
9737 | ++insn; | |
9738 | s = argsStart; | |
268f6bed | 9739 | insn_error = _("illegal operands"); |
252b5132 RH |
9740 | continue; |
9741 | } | |
268f6bed L |
9742 | if (save_c) |
9743 | *(--s) = save_c; | |
252b5132 RH |
9744 | insn_error = _("illegal operands"); |
9745 | return; | |
9746 | } | |
9747 | } | |
9748 | ||
9749 | /* This routine assembles an instruction into its binary format when | |
9750 | assembling for the mips16. As a side effect, it sets one of the | |
9751 | global variables imm_reloc or offset_reloc to the type of | |
9752 | relocation to do if one of the operands is an address expression. | |
9753 | It also sets mips16_small and mips16_ext if the user explicitly | |
9754 | requested a small or extended instruction. */ | |
9755 | ||
9756 | static void | |
9757 | mips16_ip (str, ip) | |
9758 | char *str; | |
9759 | struct mips_cl_insn *ip; | |
9760 | { | |
9761 | char *s; | |
9762 | const char *args; | |
9763 | struct mips_opcode *insn; | |
9764 | char *argsstart; | |
9765 | unsigned int regno; | |
9766 | unsigned int lastregno = 0; | |
9767 | char *s_reset; | |
9768 | ||
9769 | insn_error = NULL; | |
9770 | ||
b34976b6 AM |
9771 | mips16_small = FALSE; |
9772 | mips16_ext = FALSE; | |
252b5132 | 9773 | |
3882b010 | 9774 | for (s = str; ISLOWER (*s); ++s) |
252b5132 RH |
9775 | ; |
9776 | switch (*s) | |
9777 | { | |
9778 | case '\0': | |
9779 | break; | |
9780 | ||
9781 | case ' ': | |
9782 | *s++ = '\0'; | |
9783 | break; | |
9784 | ||
9785 | case '.': | |
9786 | if (s[1] == 't' && s[2] == ' ') | |
9787 | { | |
9788 | *s = '\0'; | |
b34976b6 | 9789 | mips16_small = TRUE; |
252b5132 RH |
9790 | s += 3; |
9791 | break; | |
9792 | } | |
9793 | else if (s[1] == 'e' && s[2] == ' ') | |
9794 | { | |
9795 | *s = '\0'; | |
b34976b6 | 9796 | mips16_ext = TRUE; |
252b5132 RH |
9797 | s += 3; |
9798 | break; | |
9799 | } | |
9800 | /* Fall through. */ | |
9801 | default: | |
9802 | insn_error = _("unknown opcode"); | |
9803 | return; | |
9804 | } | |
9805 | ||
9806 | if (mips_opts.noautoextend && ! mips16_ext) | |
b34976b6 | 9807 | mips16_small = TRUE; |
252b5132 RH |
9808 | |
9809 | if ((insn = (struct mips_opcode *) hash_find (mips16_op_hash, str)) == NULL) | |
9810 | { | |
9811 | insn_error = _("unrecognized opcode"); | |
9812 | return; | |
9813 | } | |
9814 | ||
9815 | argsstart = s; | |
9816 | for (;;) | |
9817 | { | |
9818 | assert (strcmp (insn->name, str) == 0); | |
9819 | ||
9820 | ip->insn_mo = insn; | |
9821 | ip->insn_opcode = insn->match; | |
b34976b6 | 9822 | ip->use_extend = FALSE; |
252b5132 | 9823 | imm_expr.X_op = O_absent; |
f6688943 TS |
9824 | imm_reloc[0] = BFD_RELOC_UNUSED; |
9825 | imm_reloc[1] = BFD_RELOC_UNUSED; | |
9826 | imm_reloc[2] = BFD_RELOC_UNUSED; | |
252b5132 | 9827 | offset_expr.X_op = O_absent; |
f6688943 TS |
9828 | offset_reloc[0] = BFD_RELOC_UNUSED; |
9829 | offset_reloc[1] = BFD_RELOC_UNUSED; | |
9830 | offset_reloc[2] = BFD_RELOC_UNUSED; | |
252b5132 RH |
9831 | for (args = insn->args; 1; ++args) |
9832 | { | |
9833 | int c; | |
9834 | ||
9835 | if (*s == ' ') | |
9836 | ++s; | |
9837 | ||
9838 | /* In this switch statement we call break if we did not find | |
9839 | a match, continue if we did find a match, or return if we | |
9840 | are done. */ | |
9841 | ||
9842 | c = *args; | |
9843 | switch (c) | |
9844 | { | |
9845 | case '\0': | |
9846 | if (*s == '\0') | |
9847 | { | |
9848 | /* Stuff the immediate value in now, if we can. */ | |
9849 | if (imm_expr.X_op == O_constant | |
f6688943 | 9850 | && *imm_reloc > BFD_RELOC_UNUSED |
252b5132 RH |
9851 | && insn->pinfo != INSN_MACRO) |
9852 | { | |
c4e7957c | 9853 | mips16_immed (NULL, 0, *imm_reloc - BFD_RELOC_UNUSED, |
b34976b6 | 9854 | imm_expr.X_add_number, TRUE, mips16_small, |
252b5132 RH |
9855 | mips16_ext, &ip->insn_opcode, |
9856 | &ip->use_extend, &ip->extend); | |
9857 | imm_expr.X_op = O_absent; | |
f6688943 | 9858 | *imm_reloc = BFD_RELOC_UNUSED; |
252b5132 RH |
9859 | } |
9860 | ||
9861 | return; | |
9862 | } | |
9863 | break; | |
9864 | ||
9865 | case ',': | |
9866 | if (*s++ == c) | |
9867 | continue; | |
9868 | s--; | |
9869 | switch (*++args) | |
9870 | { | |
9871 | case 'v': | |
9872 | ip->insn_opcode |= lastregno << MIPS16OP_SH_RX; | |
9873 | continue; | |
9874 | case 'w': | |
9875 | ip->insn_opcode |= lastregno << MIPS16OP_SH_RY; | |
9876 | continue; | |
9877 | } | |
9878 | break; | |
9879 | ||
9880 | case '(': | |
9881 | case ')': | |
9882 | if (*s++ == c) | |
9883 | continue; | |
9884 | break; | |
9885 | ||
9886 | case 'v': | |
9887 | case 'w': | |
9888 | if (s[0] != '$') | |
9889 | { | |
9890 | if (c == 'v') | |
9891 | ip->insn_opcode |= lastregno << MIPS16OP_SH_RX; | |
9892 | else | |
9893 | ip->insn_opcode |= lastregno << MIPS16OP_SH_RY; | |
9894 | ++args; | |
9895 | continue; | |
9896 | } | |
9897 | /* Fall through. */ | |
9898 | case 'x': | |
9899 | case 'y': | |
9900 | case 'z': | |
9901 | case 'Z': | |
9902 | case '0': | |
9903 | case 'S': | |
9904 | case 'R': | |
9905 | case 'X': | |
9906 | case 'Y': | |
9907 | if (s[0] != '$') | |
9908 | break; | |
9909 | s_reset = s; | |
3882b010 | 9910 | if (ISDIGIT (s[1])) |
252b5132 RH |
9911 | { |
9912 | ++s; | |
9913 | regno = 0; | |
9914 | do | |
9915 | { | |
9916 | regno *= 10; | |
9917 | regno += *s - '0'; | |
9918 | ++s; | |
9919 | } | |
3882b010 | 9920 | while (ISDIGIT (*s)); |
252b5132 RH |
9921 | if (regno > 31) |
9922 | { | |
9923 | as_bad (_("invalid register number (%d)"), regno); | |
9924 | regno = 2; | |
9925 | } | |
9926 | } | |
9927 | else | |
9928 | { | |
76db943d TS |
9929 | if (s[1] == 'r' && s[2] == 'a') |
9930 | { | |
9931 | s += 3; | |
9932 | regno = RA; | |
9933 | } | |
9934 | else if (s[1] == 'f' && s[2] == 'p') | |
252b5132 RH |
9935 | { |
9936 | s += 3; | |
9937 | regno = FP; | |
9938 | } | |
9939 | else if (s[1] == 's' && s[2] == 'p') | |
9940 | { | |
9941 | s += 3; | |
9942 | regno = SP; | |
9943 | } | |
9944 | else if (s[1] == 'g' && s[2] == 'p') | |
9945 | { | |
9946 | s += 3; | |
9947 | regno = GP; | |
9948 | } | |
9949 | else if (s[1] == 'a' && s[2] == 't') | |
9950 | { | |
9951 | s += 3; | |
9952 | regno = AT; | |
9953 | } | |
9954 | else if (s[1] == 'k' && s[2] == 't' && s[3] == '0') | |
9955 | { | |
9956 | s += 4; | |
9957 | regno = KT0; | |
9958 | } | |
9959 | else if (s[1] == 'k' && s[2] == 't' && s[3] == '1') | |
9960 | { | |
9961 | s += 4; | |
9962 | regno = KT1; | |
9963 | } | |
85b51719 TS |
9964 | else if (s[1] == 'z' && s[2] == 'e' && s[3] == 'r' && s[4] == 'o') |
9965 | { | |
9966 | s += 5; | |
9967 | regno = ZERO; | |
9968 | } | |
252b5132 RH |
9969 | else |
9970 | break; | |
9971 | } | |
9972 | ||
9973 | if (*s == ' ') | |
9974 | ++s; | |
9975 | if (args[1] != *s) | |
9976 | { | |
9977 | if (c == 'v' || c == 'w') | |
9978 | { | |
9979 | regno = mips16_to_32_reg_map[lastregno]; | |
9980 | s = s_reset; | |
f9419b05 | 9981 | ++args; |
252b5132 RH |
9982 | } |
9983 | } | |
9984 | ||
9985 | switch (c) | |
9986 | { | |
9987 | case 'x': | |
9988 | case 'y': | |
9989 | case 'z': | |
9990 | case 'v': | |
9991 | case 'w': | |
9992 | case 'Z': | |
9993 | regno = mips32_to_16_reg_map[regno]; | |
9994 | break; | |
9995 | ||
9996 | case '0': | |
9997 | if (regno != 0) | |
9998 | regno = ILLEGAL_REG; | |
9999 | break; | |
10000 | ||
10001 | case 'S': | |
10002 | if (regno != SP) | |
10003 | regno = ILLEGAL_REG; | |
10004 | break; | |
10005 | ||
10006 | case 'R': | |
10007 | if (regno != RA) | |
10008 | regno = ILLEGAL_REG; | |
10009 | break; | |
10010 | ||
10011 | case 'X': | |
10012 | case 'Y': | |
10013 | if (regno == AT && ! mips_opts.noat) | |
10014 | as_warn (_("used $at without \".set noat\"")); | |
10015 | break; | |
10016 | ||
10017 | default: | |
10018 | internalError (); | |
10019 | } | |
10020 | ||
10021 | if (regno == ILLEGAL_REG) | |
10022 | break; | |
10023 | ||
10024 | switch (c) | |
10025 | { | |
10026 | case 'x': | |
10027 | case 'v': | |
10028 | ip->insn_opcode |= regno << MIPS16OP_SH_RX; | |
10029 | break; | |
10030 | case 'y': | |
10031 | case 'w': | |
10032 | ip->insn_opcode |= regno << MIPS16OP_SH_RY; | |
10033 | break; | |
10034 | case 'z': | |
10035 | ip->insn_opcode |= regno << MIPS16OP_SH_RZ; | |
10036 | break; | |
10037 | case 'Z': | |
10038 | ip->insn_opcode |= regno << MIPS16OP_SH_MOVE32Z; | |
10039 | case '0': | |
10040 | case 'S': | |
10041 | case 'R': | |
10042 | break; | |
10043 | case 'X': | |
10044 | ip->insn_opcode |= regno << MIPS16OP_SH_REGR32; | |
10045 | break; | |
10046 | case 'Y': | |
10047 | regno = ((regno & 7) << 2) | ((regno & 0x18) >> 3); | |
10048 | ip->insn_opcode |= regno << MIPS16OP_SH_REG32R; | |
10049 | break; | |
10050 | default: | |
10051 | internalError (); | |
10052 | } | |
10053 | ||
10054 | lastregno = regno; | |
10055 | continue; | |
10056 | ||
10057 | case 'P': | |
10058 | if (strncmp (s, "$pc", 3) == 0) | |
10059 | { | |
10060 | s += 3; | |
10061 | continue; | |
10062 | } | |
10063 | break; | |
10064 | ||
10065 | case '<': | |
10066 | case '>': | |
10067 | case '[': | |
10068 | case ']': | |
10069 | case '4': | |
10070 | case '5': | |
10071 | case 'H': | |
10072 | case 'W': | |
10073 | case 'D': | |
10074 | case 'j': | |
10075 | case '8': | |
10076 | case 'V': | |
10077 | case 'C': | |
10078 | case 'U': | |
10079 | case 'k': | |
10080 | case 'K': | |
10081 | if (s[0] == '%' | |
10082 | && strncmp (s + 1, "gprel(", sizeof "gprel(" - 1) == 0) | |
10083 | { | |
10084 | /* This is %gprel(SYMBOL). We need to read SYMBOL, | |
10085 | and generate the appropriate reloc. If the text | |
10086 | inside %gprel is not a symbol name with an | |
10087 | optional offset, then we generate a normal reloc | |
10088 | and will probably fail later. */ | |
10089 | my_getExpression (&imm_expr, s + sizeof "%gprel" - 1); | |
10090 | if (imm_expr.X_op == O_symbol) | |
10091 | { | |
b34976b6 | 10092 | mips16_ext = TRUE; |
f6688943 | 10093 | *imm_reloc = BFD_RELOC_MIPS16_GPREL; |
252b5132 | 10094 | s = expr_end; |
b34976b6 | 10095 | ip->use_extend = TRUE; |
252b5132 RH |
10096 | ip->extend = 0; |
10097 | continue; | |
10098 | } | |
10099 | } | |
10100 | else | |
10101 | { | |
10102 | /* Just pick up a normal expression. */ | |
10103 | my_getExpression (&imm_expr, s); | |
10104 | } | |
10105 | ||
10106 | if (imm_expr.X_op == O_register) | |
10107 | { | |
10108 | /* What we thought was an expression turned out to | |
10109 | be a register. */ | |
10110 | ||
10111 | if (s[0] == '(' && args[1] == '(') | |
10112 | { | |
10113 | /* It looks like the expression was omitted | |
10114 | before a register indirection, which means | |
10115 | that the expression is implicitly zero. We | |
10116 | still set up imm_expr, so that we handle | |
10117 | explicit extensions correctly. */ | |
10118 | imm_expr.X_op = O_constant; | |
10119 | imm_expr.X_add_number = 0; | |
f6688943 | 10120 | *imm_reloc = (int) BFD_RELOC_UNUSED + c; |
252b5132 RH |
10121 | continue; |
10122 | } | |
10123 | ||
10124 | break; | |
10125 | } | |
10126 | ||
10127 | /* We need to relax this instruction. */ | |
f6688943 | 10128 | *imm_reloc = (int) BFD_RELOC_UNUSED + c; |
252b5132 RH |
10129 | s = expr_end; |
10130 | continue; | |
10131 | ||
10132 | case 'p': | |
10133 | case 'q': | |
10134 | case 'A': | |
10135 | case 'B': | |
10136 | case 'E': | |
10137 | /* We use offset_reloc rather than imm_reloc for the PC | |
10138 | relative operands. This lets macros with both | |
10139 | immediate and address operands work correctly. */ | |
10140 | my_getExpression (&offset_expr, s); | |
10141 | ||
10142 | if (offset_expr.X_op == O_register) | |
10143 | break; | |
10144 | ||
10145 | /* We need to relax this instruction. */ | |
f6688943 | 10146 | *offset_reloc = (int) BFD_RELOC_UNUSED + c; |
252b5132 RH |
10147 | s = expr_end; |
10148 | continue; | |
10149 | ||
10150 | case '6': /* break code */ | |
10151 | my_getExpression (&imm_expr, s); | |
10152 | check_absolute_expr (ip, &imm_expr); | |
10153 | if ((unsigned long) imm_expr.X_add_number > 63) | |
10154 | { | |
10155 | as_warn (_("Invalid value for `%s' (%lu)"), | |
10156 | ip->insn_mo->name, | |
10157 | (unsigned long) imm_expr.X_add_number); | |
10158 | imm_expr.X_add_number &= 0x3f; | |
10159 | } | |
10160 | ip->insn_opcode |= imm_expr.X_add_number << MIPS16OP_SH_IMM6; | |
10161 | imm_expr.X_op = O_absent; | |
10162 | s = expr_end; | |
10163 | continue; | |
10164 | ||
10165 | case 'a': /* 26 bit address */ | |
10166 | my_getExpression (&offset_expr, s); | |
10167 | s = expr_end; | |
f6688943 | 10168 | *offset_reloc = BFD_RELOC_MIPS16_JMP; |
252b5132 RH |
10169 | ip->insn_opcode <<= 16; |
10170 | continue; | |
10171 | ||
10172 | case 'l': /* register list for entry macro */ | |
10173 | case 'L': /* register list for exit macro */ | |
10174 | { | |
10175 | int mask; | |
10176 | ||
10177 | if (c == 'l') | |
10178 | mask = 0; | |
10179 | else | |
10180 | mask = 7 << 3; | |
10181 | while (*s != '\0') | |
10182 | { | |
10183 | int freg, reg1, reg2; | |
10184 | ||
10185 | while (*s == ' ' || *s == ',') | |
10186 | ++s; | |
10187 | if (*s != '$') | |
10188 | { | |
10189 | as_bad (_("can't parse register list")); | |
10190 | break; | |
10191 | } | |
10192 | ++s; | |
10193 | if (*s != 'f') | |
10194 | freg = 0; | |
10195 | else | |
10196 | { | |
10197 | freg = 1; | |
10198 | ++s; | |
10199 | } | |
10200 | reg1 = 0; | |
3882b010 | 10201 | while (ISDIGIT (*s)) |
252b5132 RH |
10202 | { |
10203 | reg1 *= 10; | |
10204 | reg1 += *s - '0'; | |
10205 | ++s; | |
10206 | } | |
10207 | if (*s == ' ') | |
10208 | ++s; | |
10209 | if (*s != '-') | |
10210 | reg2 = reg1; | |
10211 | else | |
10212 | { | |
10213 | ++s; | |
10214 | if (*s != '$') | |
10215 | break; | |
10216 | ++s; | |
10217 | if (freg) | |
10218 | { | |
10219 | if (*s == 'f') | |
10220 | ++s; | |
10221 | else | |
10222 | { | |
10223 | as_bad (_("invalid register list")); | |
10224 | break; | |
10225 | } | |
10226 | } | |
10227 | reg2 = 0; | |
3882b010 | 10228 | while (ISDIGIT (*s)) |
252b5132 RH |
10229 | { |
10230 | reg2 *= 10; | |
10231 | reg2 += *s - '0'; | |
10232 | ++s; | |
10233 | } | |
10234 | } | |
10235 | if (freg && reg1 == 0 && reg2 == 0 && c == 'L') | |
10236 | { | |
10237 | mask &= ~ (7 << 3); | |
10238 | mask |= 5 << 3; | |
10239 | } | |
10240 | else if (freg && reg1 == 0 && reg2 == 1 && c == 'L') | |
10241 | { | |
10242 | mask &= ~ (7 << 3); | |
10243 | mask |= 6 << 3; | |
10244 | } | |
10245 | else if (reg1 == 4 && reg2 >= 4 && reg2 <= 7 && c != 'L') | |
10246 | mask |= (reg2 - 3) << 3; | |
10247 | else if (reg1 == 16 && reg2 >= 16 && reg2 <= 17) | |
10248 | mask |= (reg2 - 15) << 1; | |
f9419b05 | 10249 | else if (reg1 == RA && reg2 == RA) |
252b5132 RH |
10250 | mask |= 1; |
10251 | else | |
10252 | { | |
10253 | as_bad (_("invalid register list")); | |
10254 | break; | |
10255 | } | |
10256 | } | |
10257 | /* The mask is filled in in the opcode table for the | |
10258 | benefit of the disassembler. We remove it before | |
10259 | applying the actual mask. */ | |
10260 | ip->insn_opcode &= ~ ((7 << 3) << MIPS16OP_SH_IMM6); | |
10261 | ip->insn_opcode |= mask << MIPS16OP_SH_IMM6; | |
10262 | } | |
10263 | continue; | |
10264 | ||
10265 | case 'e': /* extend code */ | |
10266 | my_getExpression (&imm_expr, s); | |
10267 | check_absolute_expr (ip, &imm_expr); | |
10268 | if ((unsigned long) imm_expr.X_add_number > 0x7ff) | |
10269 | { | |
10270 | as_warn (_("Invalid value for `%s' (%lu)"), | |
10271 | ip->insn_mo->name, | |
10272 | (unsigned long) imm_expr.X_add_number); | |
10273 | imm_expr.X_add_number &= 0x7ff; | |
10274 | } | |
10275 | ip->insn_opcode |= imm_expr.X_add_number; | |
10276 | imm_expr.X_op = O_absent; | |
10277 | s = expr_end; | |
10278 | continue; | |
10279 | ||
10280 | default: | |
10281 | internalError (); | |
10282 | } | |
10283 | break; | |
10284 | } | |
10285 | ||
10286 | /* Args don't match. */ | |
10287 | if (insn + 1 < &mips16_opcodes[bfd_mips16_num_opcodes] && | |
10288 | strcmp (insn->name, insn[1].name) == 0) | |
10289 | { | |
10290 | ++insn; | |
10291 | s = argsstart; | |
10292 | continue; | |
10293 | } | |
10294 | ||
10295 | insn_error = _("illegal operands"); | |
10296 | ||
10297 | return; | |
10298 | } | |
10299 | } | |
10300 | ||
10301 | /* This structure holds information we know about a mips16 immediate | |
10302 | argument type. */ | |
10303 | ||
e972090a NC |
10304 | struct mips16_immed_operand |
10305 | { | |
252b5132 RH |
10306 | /* The type code used in the argument string in the opcode table. */ |
10307 | int type; | |
10308 | /* The number of bits in the short form of the opcode. */ | |
10309 | int nbits; | |
10310 | /* The number of bits in the extended form of the opcode. */ | |
10311 | int extbits; | |
10312 | /* The amount by which the short form is shifted when it is used; | |
10313 | for example, the sw instruction has a shift count of 2. */ | |
10314 | int shift; | |
10315 | /* The amount by which the short form is shifted when it is stored | |
10316 | into the instruction code. */ | |
10317 | int op_shift; | |
10318 | /* Non-zero if the short form is unsigned. */ | |
10319 | int unsp; | |
10320 | /* Non-zero if the extended form is unsigned. */ | |
10321 | int extu; | |
10322 | /* Non-zero if the value is PC relative. */ | |
10323 | int pcrel; | |
10324 | }; | |
10325 | ||
10326 | /* The mips16 immediate operand types. */ | |
10327 | ||
10328 | static const struct mips16_immed_operand mips16_immed_operands[] = | |
10329 | { | |
10330 | { '<', 3, 5, 0, MIPS16OP_SH_RZ, 1, 1, 0 }, | |
10331 | { '>', 3, 5, 0, MIPS16OP_SH_RX, 1, 1, 0 }, | |
10332 | { '[', 3, 6, 0, MIPS16OP_SH_RZ, 1, 1, 0 }, | |
10333 | { ']', 3, 6, 0, MIPS16OP_SH_RX, 1, 1, 0 }, | |
10334 | { '4', 4, 15, 0, MIPS16OP_SH_IMM4, 0, 0, 0 }, | |
10335 | { '5', 5, 16, 0, MIPS16OP_SH_IMM5, 1, 0, 0 }, | |
10336 | { 'H', 5, 16, 1, MIPS16OP_SH_IMM5, 1, 0, 0 }, | |
10337 | { 'W', 5, 16, 2, MIPS16OP_SH_IMM5, 1, 0, 0 }, | |
10338 | { 'D', 5, 16, 3, MIPS16OP_SH_IMM5, 1, 0, 0 }, | |
10339 | { 'j', 5, 16, 0, MIPS16OP_SH_IMM5, 0, 0, 0 }, | |
10340 | { '8', 8, 16, 0, MIPS16OP_SH_IMM8, 1, 0, 0 }, | |
10341 | { 'V', 8, 16, 2, MIPS16OP_SH_IMM8, 1, 0, 0 }, | |
10342 | { 'C', 8, 16, 3, MIPS16OP_SH_IMM8, 1, 0, 0 }, | |
10343 | { 'U', 8, 16, 0, MIPS16OP_SH_IMM8, 1, 1, 0 }, | |
10344 | { 'k', 8, 16, 0, MIPS16OP_SH_IMM8, 0, 0, 0 }, | |
10345 | { 'K', 8, 16, 3, MIPS16OP_SH_IMM8, 0, 0, 0 }, | |
10346 | { 'p', 8, 16, 0, MIPS16OP_SH_IMM8, 0, 0, 1 }, | |
10347 | { 'q', 11, 16, 0, MIPS16OP_SH_IMM8, 0, 0, 1 }, | |
10348 | { 'A', 8, 16, 2, MIPS16OP_SH_IMM8, 1, 0, 1 }, | |
10349 | { 'B', 5, 16, 3, MIPS16OP_SH_IMM5, 1, 0, 1 }, | |
10350 | { 'E', 5, 16, 2, MIPS16OP_SH_IMM5, 1, 0, 1 } | |
10351 | }; | |
10352 | ||
10353 | #define MIPS16_NUM_IMMED \ | |
10354 | (sizeof mips16_immed_operands / sizeof mips16_immed_operands[0]) | |
10355 | ||
10356 | /* Handle a mips16 instruction with an immediate value. This or's the | |
10357 | small immediate value into *INSN. It sets *USE_EXTEND to indicate | |
10358 | whether an extended value is needed; if one is needed, it sets | |
10359 | *EXTEND to the value. The argument type is TYPE. The value is VAL. | |
10360 | If SMALL is true, an unextended opcode was explicitly requested. | |
10361 | If EXT is true, an extended opcode was explicitly requested. If | |
10362 | WARN is true, warn if EXT does not match reality. */ | |
10363 | ||
10364 | static void | |
10365 | mips16_immed (file, line, type, val, warn, small, ext, insn, use_extend, | |
10366 | extend) | |
10367 | char *file; | |
10368 | unsigned int line; | |
10369 | int type; | |
10370 | offsetT val; | |
b34976b6 AM |
10371 | bfd_boolean warn; |
10372 | bfd_boolean small; | |
10373 | bfd_boolean ext; | |
252b5132 | 10374 | unsigned long *insn; |
b34976b6 | 10375 | bfd_boolean *use_extend; |
252b5132 RH |
10376 | unsigned short *extend; |
10377 | { | |
10378 | register const struct mips16_immed_operand *op; | |
10379 | int mintiny, maxtiny; | |
b34976b6 | 10380 | bfd_boolean needext; |
252b5132 RH |
10381 | |
10382 | op = mips16_immed_operands; | |
10383 | while (op->type != type) | |
10384 | { | |
10385 | ++op; | |
10386 | assert (op < mips16_immed_operands + MIPS16_NUM_IMMED); | |
10387 | } | |
10388 | ||
10389 | if (op->unsp) | |
10390 | { | |
10391 | if (type == '<' || type == '>' || type == '[' || type == ']') | |
10392 | { | |
10393 | mintiny = 1; | |
10394 | maxtiny = 1 << op->nbits; | |
10395 | } | |
10396 | else | |
10397 | { | |
10398 | mintiny = 0; | |
10399 | maxtiny = (1 << op->nbits) - 1; | |
10400 | } | |
10401 | } | |
10402 | else | |
10403 | { | |
10404 | mintiny = - (1 << (op->nbits - 1)); | |
10405 | maxtiny = (1 << (op->nbits - 1)) - 1; | |
10406 | } | |
10407 | ||
10408 | /* Branch offsets have an implicit 0 in the lowest bit. */ | |
10409 | if (type == 'p' || type == 'q') | |
10410 | val /= 2; | |
10411 | ||
10412 | if ((val & ((1 << op->shift) - 1)) != 0 | |
10413 | || val < (mintiny << op->shift) | |
10414 | || val > (maxtiny << op->shift)) | |
b34976b6 | 10415 | needext = TRUE; |
252b5132 | 10416 | else |
b34976b6 | 10417 | needext = FALSE; |
252b5132 RH |
10418 | |
10419 | if (warn && ext && ! needext) | |
beae10d5 KH |
10420 | as_warn_where (file, line, |
10421 | _("extended operand requested but not required")); | |
252b5132 RH |
10422 | if (small && needext) |
10423 | as_bad_where (file, line, _("invalid unextended operand value")); | |
10424 | ||
10425 | if (small || (! ext && ! needext)) | |
10426 | { | |
10427 | int insnval; | |
10428 | ||
b34976b6 | 10429 | *use_extend = FALSE; |
252b5132 RH |
10430 | insnval = ((val >> op->shift) & ((1 << op->nbits) - 1)); |
10431 | insnval <<= op->op_shift; | |
10432 | *insn |= insnval; | |
10433 | } | |
10434 | else | |
10435 | { | |
10436 | long minext, maxext; | |
10437 | int extval; | |
10438 | ||
10439 | if (op->extu) | |
10440 | { | |
10441 | minext = 0; | |
10442 | maxext = (1 << op->extbits) - 1; | |
10443 | } | |
10444 | else | |
10445 | { | |
10446 | minext = - (1 << (op->extbits - 1)); | |
10447 | maxext = (1 << (op->extbits - 1)) - 1; | |
10448 | } | |
10449 | if (val < minext || val > maxext) | |
10450 | as_bad_where (file, line, | |
10451 | _("operand value out of range for instruction")); | |
10452 | ||
b34976b6 | 10453 | *use_extend = TRUE; |
252b5132 RH |
10454 | if (op->extbits == 16) |
10455 | { | |
10456 | extval = ((val >> 11) & 0x1f) | (val & 0x7e0); | |
10457 | val &= 0x1f; | |
10458 | } | |
10459 | else if (op->extbits == 15) | |
10460 | { | |
10461 | extval = ((val >> 11) & 0xf) | (val & 0x7f0); | |
10462 | val &= 0xf; | |
10463 | } | |
10464 | else | |
10465 | { | |
10466 | extval = ((val & 0x1f) << 6) | (val & 0x20); | |
10467 | val = 0; | |
10468 | } | |
10469 | ||
10470 | *extend = (unsigned short) extval; | |
10471 | *insn |= val; | |
10472 | } | |
10473 | } | |
10474 | \f | |
5e0116d5 | 10475 | static const struct percent_op_match |
ad8d3bb3 | 10476 | { |
5e0116d5 RS |
10477 | const char *str; |
10478 | bfd_reloc_code_real_type reloc; | |
ad8d3bb3 TS |
10479 | } percent_op[] = |
10480 | { | |
5e0116d5 | 10481 | {"%lo", BFD_RELOC_LO16}, |
ad8d3bb3 | 10482 | #ifdef OBJ_ELF |
5e0116d5 RS |
10483 | {"%call_hi", BFD_RELOC_MIPS_CALL_HI16}, |
10484 | {"%call_lo", BFD_RELOC_MIPS_CALL_LO16}, | |
10485 | {"%call16", BFD_RELOC_MIPS_CALL16}, | |
10486 | {"%got_disp", BFD_RELOC_MIPS_GOT_DISP}, | |
10487 | {"%got_page", BFD_RELOC_MIPS_GOT_PAGE}, | |
10488 | {"%got_ofst", BFD_RELOC_MIPS_GOT_OFST}, | |
10489 | {"%got_hi", BFD_RELOC_MIPS_GOT_HI16}, | |
10490 | {"%got_lo", BFD_RELOC_MIPS_GOT_LO16}, | |
10491 | {"%got", BFD_RELOC_MIPS_GOT16}, | |
10492 | {"%gp_rel", BFD_RELOC_GPREL16}, | |
10493 | {"%half", BFD_RELOC_16}, | |
10494 | {"%highest", BFD_RELOC_MIPS_HIGHEST}, | |
10495 | {"%higher", BFD_RELOC_MIPS_HIGHER}, | |
10496 | {"%neg", BFD_RELOC_MIPS_SUB}, | |
ad8d3bb3 | 10497 | #endif |
5e0116d5 | 10498 | {"%hi", BFD_RELOC_HI16_S} |
ad8d3bb3 TS |
10499 | }; |
10500 | ||
252b5132 | 10501 | |
5e0116d5 RS |
10502 | /* Return true if *STR points to a relocation operator. When returning true, |
10503 | move *STR over the operator and store its relocation code in *RELOC. | |
10504 | Leave both *STR and *RELOC alone when returning false. */ | |
10505 | ||
10506 | static bfd_boolean | |
10507 | parse_relocation (str, reloc) | |
ad8d3bb3 | 10508 | char **str; |
5e0116d5 | 10509 | bfd_reloc_code_real_type *reloc; |
252b5132 | 10510 | { |
5e0116d5 | 10511 | size_t i; |
76b3015f | 10512 | |
5e0116d5 RS |
10513 | for (i = 0; i < ARRAY_SIZE (percent_op); i++) |
10514 | if (strncasecmp (*str, percent_op[i].str, strlen (percent_op[i].str)) == 0) | |
394f9b3a | 10515 | { |
5e0116d5 RS |
10516 | *str += strlen (percent_op[i].str); |
10517 | *reloc = percent_op[i].reloc; | |
394f9b3a | 10518 | |
5e0116d5 RS |
10519 | /* Check whether the output BFD supports this relocation. |
10520 | If not, issue an error and fall back on something safe. */ | |
10521 | if (!bfd_reloc_type_lookup (stdoutput, percent_op[i].reloc)) | |
394f9b3a | 10522 | { |
5e0116d5 RS |
10523 | as_bad ("relocation %s isn't supported by the current ABI", |
10524 | percent_op[i].str); | |
10525 | *reloc = BFD_RELOC_LO16; | |
394f9b3a | 10526 | } |
5e0116d5 | 10527 | return TRUE; |
394f9b3a | 10528 | } |
5e0116d5 | 10529 | return FALSE; |
394f9b3a | 10530 | } |
ad8d3bb3 | 10531 | |
ad8d3bb3 | 10532 | |
5e0116d5 RS |
10533 | /* Parse string STR as a 16-bit relocatable operand. Store the |
10534 | expression in *EP and the relocations in the array starting | |
10535 | at RELOC. Return the number of relocation operators used. | |
ad8d3bb3 | 10536 | |
5e0116d5 RS |
10537 | On exit, EXPR_END points to the first character after the expression. |
10538 | If no relocation operators are used, RELOC[0] is set to BFD_RELOC_LO16. */ | |
ad8d3bb3 | 10539 | |
5e0116d5 RS |
10540 | static size_t |
10541 | my_getSmallExpression (ep, reloc, str) | |
ad8d3bb3 | 10542 | expressionS *ep; |
5e0116d5 | 10543 | bfd_reloc_code_real_type *reloc; |
ad8d3bb3 TS |
10544 | char *str; |
10545 | { | |
5e0116d5 RS |
10546 | bfd_reloc_code_real_type reversed_reloc[3]; |
10547 | size_t reloc_index, i; | |
09b8f35a RS |
10548 | int crux_depth, str_depth; |
10549 | char *crux; | |
5e0116d5 RS |
10550 | |
10551 | /* Search for the start of the main expression, recoding relocations | |
09b8f35a RS |
10552 | in REVERSED_RELOC. End the loop with CRUX pointing to the start |
10553 | of the main expression and with CRUX_DEPTH containing the number | |
10554 | of open brackets at that point. */ | |
10555 | reloc_index = -1; | |
10556 | str_depth = 0; | |
10557 | do | |
fb1b3232 | 10558 | { |
09b8f35a RS |
10559 | reloc_index++; |
10560 | crux = str; | |
10561 | crux_depth = str_depth; | |
10562 | ||
10563 | /* Skip over whitespace and brackets, keeping count of the number | |
10564 | of brackets. */ | |
10565 | while (*str == ' ' || *str == '\t' || *str == '(') | |
10566 | if (*str++ == '(') | |
10567 | str_depth++; | |
5e0116d5 | 10568 | } |
09b8f35a RS |
10569 | while (*str == '%' |
10570 | && reloc_index < (HAVE_NEWABI ? 3 : 1) | |
10571 | && parse_relocation (&str, &reversed_reloc[reloc_index])); | |
ad8d3bb3 | 10572 | |
09b8f35a | 10573 | my_getExpression (ep, crux); |
5e0116d5 | 10574 | str = expr_end; |
394f9b3a | 10575 | |
5e0116d5 | 10576 | /* Match every open bracket. */ |
09b8f35a | 10577 | while (crux_depth > 0 && (*str == ')' || *str == ' ' || *str == '\t')) |
5e0116d5 | 10578 | if (*str++ == ')') |
09b8f35a | 10579 | crux_depth--; |
394f9b3a | 10580 | |
09b8f35a | 10581 | if (crux_depth > 0) |
5e0116d5 | 10582 | as_bad ("unclosed '('"); |
394f9b3a | 10583 | |
5e0116d5 | 10584 | expr_end = str; |
252b5132 | 10585 | |
64bdfcaf RS |
10586 | if (reloc_index == 0) |
10587 | reloc[0] = BFD_RELOC_LO16; | |
10588 | else | |
10589 | { | |
10590 | prev_reloc_op_frag = frag_now; | |
10591 | for (i = 0; i < reloc_index; i++) | |
10592 | reloc[i] = reversed_reloc[reloc_index - 1 - i]; | |
10593 | } | |
fb1b3232 | 10594 | |
5e0116d5 | 10595 | return reloc_index; |
252b5132 RH |
10596 | } |
10597 | ||
10598 | static void | |
10599 | my_getExpression (ep, str) | |
10600 | expressionS *ep; | |
10601 | char *str; | |
10602 | { | |
10603 | char *save_in; | |
98aa84af | 10604 | valueT val; |
252b5132 RH |
10605 | |
10606 | save_in = input_line_pointer; | |
10607 | input_line_pointer = str; | |
10608 | expression (ep); | |
10609 | expr_end = input_line_pointer; | |
10610 | input_line_pointer = save_in; | |
10611 | ||
10612 | /* If we are in mips16 mode, and this is an expression based on `.', | |
10613 | then we bump the value of the symbol by 1 since that is how other | |
10614 | text symbols are handled. We don't bother to handle complex | |
10615 | expressions, just `.' plus or minus a constant. */ | |
10616 | if (mips_opts.mips16 | |
10617 | && ep->X_op == O_symbol | |
10618 | && strcmp (S_GET_NAME (ep->X_add_symbol), FAKE_LABEL_NAME) == 0 | |
10619 | && S_GET_SEGMENT (ep->X_add_symbol) == now_seg | |
49309057 ILT |
10620 | && symbol_get_frag (ep->X_add_symbol) == frag_now |
10621 | && symbol_constant_p (ep->X_add_symbol) | |
98aa84af AM |
10622 | && (val = S_GET_VALUE (ep->X_add_symbol)) == frag_now_fix ()) |
10623 | S_SET_VALUE (ep->X_add_symbol, val + 1); | |
252b5132 RH |
10624 | } |
10625 | ||
10626 | /* Turn a string in input_line_pointer into a floating point constant | |
bc0d738a NC |
10627 | of type TYPE, and store the appropriate bytes in *LITP. The number |
10628 | of LITTLENUMS emitted is stored in *SIZEP. An error message is | |
252b5132 RH |
10629 | returned, or NULL on OK. */ |
10630 | ||
10631 | char * | |
10632 | md_atof (type, litP, sizeP) | |
10633 | int type; | |
10634 | char *litP; | |
10635 | int *sizeP; | |
10636 | { | |
10637 | int prec; | |
10638 | LITTLENUM_TYPE words[4]; | |
10639 | char *t; | |
10640 | int i; | |
10641 | ||
10642 | switch (type) | |
10643 | { | |
10644 | case 'f': | |
10645 | prec = 2; | |
10646 | break; | |
10647 | ||
10648 | case 'd': | |
10649 | prec = 4; | |
10650 | break; | |
10651 | ||
10652 | default: | |
10653 | *sizeP = 0; | |
10654 | return _("bad call to md_atof"); | |
10655 | } | |
10656 | ||
10657 | t = atof_ieee (input_line_pointer, type, words); | |
10658 | if (t) | |
10659 | input_line_pointer = t; | |
10660 | ||
10661 | *sizeP = prec * 2; | |
10662 | ||
10663 | if (! target_big_endian) | |
10664 | { | |
10665 | for (i = prec - 1; i >= 0; i--) | |
10666 | { | |
10667 | md_number_to_chars (litP, (valueT) words[i], 2); | |
10668 | litP += 2; | |
10669 | } | |
10670 | } | |
10671 | else | |
10672 | { | |
10673 | for (i = 0; i < prec; i++) | |
10674 | { | |
10675 | md_number_to_chars (litP, (valueT) words[i], 2); | |
10676 | litP += 2; | |
10677 | } | |
10678 | } | |
bdaaa2e1 | 10679 | |
252b5132 RH |
10680 | return NULL; |
10681 | } | |
10682 | ||
10683 | void | |
10684 | md_number_to_chars (buf, val, n) | |
10685 | char *buf; | |
10686 | valueT val; | |
10687 | int n; | |
10688 | { | |
10689 | if (target_big_endian) | |
10690 | number_to_chars_bigendian (buf, val, n); | |
10691 | else | |
10692 | number_to_chars_littleendian (buf, val, n); | |
10693 | } | |
10694 | \f | |
ae948b86 | 10695 | #ifdef OBJ_ELF |
e013f690 TS |
10696 | static int support_64bit_objects(void) |
10697 | { | |
10698 | const char **list, **l; | |
aa3d8fdf | 10699 | int yes; |
e013f690 TS |
10700 | |
10701 | list = bfd_target_list (); | |
10702 | for (l = list; *l != NULL; l++) | |
10703 | #ifdef TE_TMIPS | |
10704 | /* This is traditional mips */ | |
10705 | if (strcmp (*l, "elf64-tradbigmips") == 0 | |
10706 | || strcmp (*l, "elf64-tradlittlemips") == 0) | |
10707 | #else | |
10708 | if (strcmp (*l, "elf64-bigmips") == 0 | |
10709 | || strcmp (*l, "elf64-littlemips") == 0) | |
10710 | #endif | |
10711 | break; | |
aa3d8fdf | 10712 | yes = (*l != NULL); |
e013f690 | 10713 | free (list); |
aa3d8fdf | 10714 | return yes; |
e013f690 | 10715 | } |
ae948b86 | 10716 | #endif /* OBJ_ELF */ |
e013f690 | 10717 | |
5a38dc70 | 10718 | const char *md_shortopts = "nO::g::G:"; |
252b5132 | 10719 | |
e972090a NC |
10720 | struct option md_longopts[] = |
10721 | { | |
252b5132 RH |
10722 | #define OPTION_MIPS1 (OPTION_MD_BASE + 1) |
10723 | {"mips0", no_argument, NULL, OPTION_MIPS1}, | |
10724 | {"mips1", no_argument, NULL, OPTION_MIPS1}, | |
10725 | #define OPTION_MIPS2 (OPTION_MD_BASE + 2) | |
10726 | {"mips2", no_argument, NULL, OPTION_MIPS2}, | |
10727 | #define OPTION_MIPS3 (OPTION_MD_BASE + 3) | |
10728 | {"mips3", no_argument, NULL, OPTION_MIPS3}, | |
10729 | #define OPTION_MIPS4 (OPTION_MD_BASE + 4) | |
10730 | {"mips4", no_argument, NULL, OPTION_MIPS4}, | |
ae948b86 TS |
10731 | #define OPTION_MIPS5 (OPTION_MD_BASE + 5) |
10732 | {"mips5", no_argument, NULL, OPTION_MIPS5}, | |
10733 | #define OPTION_MIPS32 (OPTION_MD_BASE + 6) | |
10734 | {"mips32", no_argument, NULL, OPTION_MIPS32}, | |
10735 | #define OPTION_MIPS64 (OPTION_MD_BASE + 7) | |
10736 | {"mips64", no_argument, NULL, OPTION_MIPS64}, | |
10737 | #define OPTION_MEMBEDDED_PIC (OPTION_MD_BASE + 8) | |
252b5132 | 10738 | {"membedded-pic", no_argument, NULL, OPTION_MEMBEDDED_PIC}, |
ae948b86 | 10739 | #define OPTION_TRAP (OPTION_MD_BASE + 9) |
252b5132 RH |
10740 | {"trap", no_argument, NULL, OPTION_TRAP}, |
10741 | {"no-break", no_argument, NULL, OPTION_TRAP}, | |
ae948b86 | 10742 | #define OPTION_BREAK (OPTION_MD_BASE + 10) |
252b5132 RH |
10743 | {"break", no_argument, NULL, OPTION_BREAK}, |
10744 | {"no-trap", no_argument, NULL, OPTION_BREAK}, | |
ae948b86 | 10745 | #define OPTION_EB (OPTION_MD_BASE + 11) |
252b5132 | 10746 | {"EB", no_argument, NULL, OPTION_EB}, |
ae948b86 | 10747 | #define OPTION_EL (OPTION_MD_BASE + 12) |
252b5132 | 10748 | {"EL", no_argument, NULL, OPTION_EL}, |
ae948b86 | 10749 | #define OPTION_MIPS16 (OPTION_MD_BASE + 13) |
252b5132 | 10750 | {"mips16", no_argument, NULL, OPTION_MIPS16}, |
ae948b86 | 10751 | #define OPTION_NO_MIPS16 (OPTION_MD_BASE + 14) |
252b5132 | 10752 | {"no-mips16", no_argument, NULL, OPTION_NO_MIPS16}, |
ae948b86 | 10753 | #define OPTION_M7000_HILO_FIX (OPTION_MD_BASE + 15) |
6b76fefe | 10754 | {"mfix7000", no_argument, NULL, OPTION_M7000_HILO_FIX}, |
9ee72ff1 TS |
10755 | #define OPTION_MNO_7000_HILO_FIX (OPTION_MD_BASE + 16) |
10756 | {"no-fix-7000", no_argument, NULL, OPTION_MNO_7000_HILO_FIX}, | |
10757 | {"mno-fix7000", no_argument, NULL, OPTION_MNO_7000_HILO_FIX}, | |
ae948b86 TS |
10758 | #define OPTION_FP32 (OPTION_MD_BASE + 17) |
10759 | {"mfp32", no_argument, NULL, OPTION_FP32}, | |
10760 | #define OPTION_GP32 (OPTION_MD_BASE + 18) | |
c97ef257 | 10761 | {"mgp32", no_argument, NULL, OPTION_GP32}, |
ae948b86 | 10762 | #define OPTION_CONSTRUCT_FLOATS (OPTION_MD_BASE + 19) |
119d663a | 10763 | {"construct-floats", no_argument, NULL, OPTION_CONSTRUCT_FLOATS}, |
ae948b86 | 10764 | #define OPTION_NO_CONSTRUCT_FLOATS (OPTION_MD_BASE + 20) |
119d663a | 10765 | {"no-construct-floats", no_argument, NULL, OPTION_NO_CONSTRUCT_FLOATS}, |
ae948b86 | 10766 | #define OPTION_MARCH (OPTION_MD_BASE + 21) |
ec68c924 | 10767 | {"march", required_argument, NULL, OPTION_MARCH}, |
ae948b86 | 10768 | #define OPTION_MTUNE (OPTION_MD_BASE + 22) |
ec68c924 | 10769 | {"mtune", required_argument, NULL, OPTION_MTUNE}, |
316f5878 RS |
10770 | #define OPTION_FP64 (OPTION_MD_BASE + 23) |
10771 | {"mfp64", no_argument, NULL, OPTION_FP64}, | |
ae948b86 TS |
10772 | #define OPTION_M4650 (OPTION_MD_BASE + 24) |
10773 | {"m4650", no_argument, NULL, OPTION_M4650}, | |
10774 | #define OPTION_NO_M4650 (OPTION_MD_BASE + 25) | |
10775 | {"no-m4650", no_argument, NULL, OPTION_NO_M4650}, | |
10776 | #define OPTION_M4010 (OPTION_MD_BASE + 26) | |
10777 | {"m4010", no_argument, NULL, OPTION_M4010}, | |
10778 | #define OPTION_NO_M4010 (OPTION_MD_BASE + 27) | |
10779 | {"no-m4010", no_argument, NULL, OPTION_NO_M4010}, | |
10780 | #define OPTION_M4100 (OPTION_MD_BASE + 28) | |
10781 | {"m4100", no_argument, NULL, OPTION_M4100}, | |
10782 | #define OPTION_NO_M4100 (OPTION_MD_BASE + 29) | |
10783 | {"no-m4100", no_argument, NULL, OPTION_NO_M4100}, | |
10784 | #define OPTION_M3900 (OPTION_MD_BASE + 30) | |
10785 | {"m3900", no_argument, NULL, OPTION_M3900}, | |
10786 | #define OPTION_NO_M3900 (OPTION_MD_BASE + 31) | |
10787 | {"no-m3900", no_argument, NULL, OPTION_NO_M3900}, | |
10788 | #define OPTION_GP64 (OPTION_MD_BASE + 32) | |
10789 | {"mgp64", no_argument, NULL, OPTION_GP64}, | |
1f25f5d3 CD |
10790 | #define OPTION_MIPS3D (OPTION_MD_BASE + 33) |
10791 | {"mips3d", no_argument, NULL, OPTION_MIPS3D}, | |
10792 | #define OPTION_NO_MIPS3D (OPTION_MD_BASE + 34) | |
10793 | {"no-mips3d", no_argument, NULL, OPTION_NO_MIPS3D}, | |
deec1734 CD |
10794 | #define OPTION_MDMX (OPTION_MD_BASE + 35) |
10795 | {"mdmx", no_argument, NULL, OPTION_MDMX}, | |
10796 | #define OPTION_NO_MDMX (OPTION_MD_BASE + 36) | |
10797 | {"no-mdmx", no_argument, NULL, OPTION_NO_MDMX}, | |
60b63b72 RS |
10798 | #define OPTION_FIX_VR4122 (OPTION_MD_BASE + 37) |
10799 | #define OPTION_NO_FIX_VR4122 (OPTION_MD_BASE + 38) | |
10800 | {"mfix-vr4122-bugs", no_argument, NULL, OPTION_FIX_VR4122}, | |
10801 | {"no-mfix-vr4122-bugs", no_argument, NULL, OPTION_NO_FIX_VR4122}, | |
4a6a3df4 AO |
10802 | #define OPTION_RELAX_BRANCH (OPTION_MD_BASE + 39) |
10803 | #define OPTION_NO_RELAX_BRANCH (OPTION_MD_BASE + 40) | |
10804 | {"relax-branch", no_argument, NULL, OPTION_RELAX_BRANCH}, | |
10805 | {"no-relax-branch", no_argument, NULL, OPTION_NO_RELAX_BRANCH}, | |
af7ee8bf CD |
10806 | #define OPTION_MIPS32R2 (OPTION_MD_BASE + 41) |
10807 | {"mips32r2", no_argument, NULL, OPTION_MIPS32R2}, | |
156c2f8b | 10808 | #ifdef OBJ_ELF |
af7ee8bf | 10809 | #define OPTION_ELF_BASE (OPTION_MD_BASE + 42) |
156c2f8b | 10810 | #define OPTION_CALL_SHARED (OPTION_ELF_BASE + 0) |
156c2f8b NC |
10811 | {"KPIC", no_argument, NULL, OPTION_CALL_SHARED}, |
10812 | {"call_shared", no_argument, NULL, OPTION_CALL_SHARED}, | |
ae948b86 | 10813 | #define OPTION_NON_SHARED (OPTION_ELF_BASE + 1) |
156c2f8b | 10814 | {"non_shared", no_argument, NULL, OPTION_NON_SHARED}, |
ae948b86 | 10815 | #define OPTION_XGOT (OPTION_ELF_BASE + 2) |
156c2f8b | 10816 | {"xgot", no_argument, NULL, OPTION_XGOT}, |
ae948b86 TS |
10817 | #define OPTION_MABI (OPTION_ELF_BASE + 3) |
10818 | {"mabi", required_argument, NULL, OPTION_MABI}, | |
10819 | #define OPTION_32 (OPTION_ELF_BASE + 4) | |
156c2f8b | 10820 | {"32", no_argument, NULL, OPTION_32}, |
ae948b86 | 10821 | #define OPTION_N32 (OPTION_ELF_BASE + 5) |
e013f690 | 10822 | {"n32", no_argument, NULL, OPTION_N32}, |
ae948b86 | 10823 | #define OPTION_64 (OPTION_ELF_BASE + 6) |
156c2f8b | 10824 | {"64", no_argument, NULL, OPTION_64}, |
ecb4347a DJ |
10825 | #define OPTION_MDEBUG (OPTION_ELF_BASE + 7) |
10826 | {"mdebug", no_argument, NULL, OPTION_MDEBUG}, | |
10827 | #define OPTION_NO_MDEBUG (OPTION_ELF_BASE + 8) | |
10828 | {"no-mdebug", no_argument, NULL, OPTION_NO_MDEBUG}, | |
ae948b86 | 10829 | #endif /* OBJ_ELF */ |
252b5132 RH |
10830 | {NULL, no_argument, NULL, 0} |
10831 | }; | |
156c2f8b | 10832 | size_t md_longopts_size = sizeof (md_longopts); |
252b5132 | 10833 | |
316f5878 RS |
10834 | /* Set STRING_PTR (either &mips_arch_string or &mips_tune_string) to |
10835 | NEW_VALUE. Warn if another value was already specified. Note: | |
10836 | we have to defer parsing the -march and -mtune arguments in order | |
10837 | to handle 'from-abi' correctly, since the ABI might be specified | |
10838 | in a later argument. */ | |
10839 | ||
10840 | static void | |
10841 | mips_set_option_string (string_ptr, new_value) | |
10842 | const char **string_ptr, *new_value; | |
10843 | { | |
10844 | if (*string_ptr != 0 && strcasecmp (*string_ptr, new_value) != 0) | |
10845 | as_warn (_("A different %s was already specified, is now %s"), | |
10846 | string_ptr == &mips_arch_string ? "-march" : "-mtune", | |
10847 | new_value); | |
10848 | ||
10849 | *string_ptr = new_value; | |
10850 | } | |
10851 | ||
252b5132 RH |
10852 | int |
10853 | md_parse_option (c, arg) | |
10854 | int c; | |
10855 | char *arg; | |
10856 | { | |
10857 | switch (c) | |
10858 | { | |
119d663a NC |
10859 | case OPTION_CONSTRUCT_FLOATS: |
10860 | mips_disable_float_construction = 0; | |
10861 | break; | |
bdaaa2e1 | 10862 | |
119d663a NC |
10863 | case OPTION_NO_CONSTRUCT_FLOATS: |
10864 | mips_disable_float_construction = 1; | |
10865 | break; | |
bdaaa2e1 | 10866 | |
252b5132 RH |
10867 | case OPTION_TRAP: |
10868 | mips_trap = 1; | |
10869 | break; | |
10870 | ||
10871 | case OPTION_BREAK: | |
10872 | mips_trap = 0; | |
10873 | break; | |
10874 | ||
10875 | case OPTION_EB: | |
10876 | target_big_endian = 1; | |
10877 | break; | |
10878 | ||
10879 | case OPTION_EL: | |
10880 | target_big_endian = 0; | |
10881 | break; | |
10882 | ||
39c0a331 L |
10883 | case 'n': |
10884 | warn_nops = 1; | |
10885 | break; | |
10886 | ||
252b5132 RH |
10887 | case 'O': |
10888 | if (arg && arg[1] == '0') | |
10889 | mips_optimize = 1; | |
10890 | else | |
10891 | mips_optimize = 2; | |
10892 | break; | |
10893 | ||
10894 | case 'g': | |
10895 | if (arg == NULL) | |
10896 | mips_debug = 2; | |
10897 | else | |
10898 | mips_debug = atoi (arg); | |
10899 | /* When the MIPS assembler sees -g or -g2, it does not do | |
10900 | optimizations which limit full symbolic debugging. We take | |
10901 | that to be equivalent to -O0. */ | |
10902 | if (mips_debug == 2) | |
10903 | mips_optimize = 1; | |
10904 | break; | |
10905 | ||
10906 | case OPTION_MIPS1: | |
316f5878 | 10907 | file_mips_isa = ISA_MIPS1; |
252b5132 RH |
10908 | break; |
10909 | ||
10910 | case OPTION_MIPS2: | |
316f5878 | 10911 | file_mips_isa = ISA_MIPS2; |
252b5132 RH |
10912 | break; |
10913 | ||
10914 | case OPTION_MIPS3: | |
316f5878 | 10915 | file_mips_isa = ISA_MIPS3; |
252b5132 RH |
10916 | break; |
10917 | ||
10918 | case OPTION_MIPS4: | |
316f5878 | 10919 | file_mips_isa = ISA_MIPS4; |
e7af610e NC |
10920 | break; |
10921 | ||
84ea6cf2 | 10922 | case OPTION_MIPS5: |
316f5878 | 10923 | file_mips_isa = ISA_MIPS5; |
84ea6cf2 NC |
10924 | break; |
10925 | ||
e7af610e | 10926 | case OPTION_MIPS32: |
316f5878 | 10927 | file_mips_isa = ISA_MIPS32; |
252b5132 RH |
10928 | break; |
10929 | ||
af7ee8bf CD |
10930 | case OPTION_MIPS32R2: |
10931 | file_mips_isa = ISA_MIPS32R2; | |
10932 | break; | |
10933 | ||
84ea6cf2 | 10934 | case OPTION_MIPS64: |
316f5878 | 10935 | file_mips_isa = ISA_MIPS64; |
84ea6cf2 NC |
10936 | break; |
10937 | ||
ec68c924 | 10938 | case OPTION_MTUNE: |
316f5878 RS |
10939 | mips_set_option_string (&mips_tune_string, arg); |
10940 | break; | |
ec68c924 | 10941 | |
316f5878 RS |
10942 | case OPTION_MARCH: |
10943 | mips_set_option_string (&mips_arch_string, arg); | |
252b5132 RH |
10944 | break; |
10945 | ||
10946 | case OPTION_M4650: | |
316f5878 RS |
10947 | mips_set_option_string (&mips_arch_string, "4650"); |
10948 | mips_set_option_string (&mips_tune_string, "4650"); | |
252b5132 RH |
10949 | break; |
10950 | ||
10951 | case OPTION_NO_M4650: | |
10952 | break; | |
10953 | ||
10954 | case OPTION_M4010: | |
316f5878 RS |
10955 | mips_set_option_string (&mips_arch_string, "4010"); |
10956 | mips_set_option_string (&mips_tune_string, "4010"); | |
252b5132 RH |
10957 | break; |
10958 | ||
10959 | case OPTION_NO_M4010: | |
10960 | break; | |
10961 | ||
10962 | case OPTION_M4100: | |
316f5878 RS |
10963 | mips_set_option_string (&mips_arch_string, "4100"); |
10964 | mips_set_option_string (&mips_tune_string, "4100"); | |
252b5132 RH |
10965 | break; |
10966 | ||
10967 | case OPTION_NO_M4100: | |
10968 | break; | |
10969 | ||
252b5132 | 10970 | case OPTION_M3900: |
316f5878 RS |
10971 | mips_set_option_string (&mips_arch_string, "3900"); |
10972 | mips_set_option_string (&mips_tune_string, "3900"); | |
252b5132 | 10973 | break; |
bdaaa2e1 | 10974 | |
252b5132 RH |
10975 | case OPTION_NO_M3900: |
10976 | break; | |
10977 | ||
deec1734 CD |
10978 | case OPTION_MDMX: |
10979 | mips_opts.ase_mdmx = 1; | |
10980 | break; | |
10981 | ||
10982 | case OPTION_NO_MDMX: | |
10983 | mips_opts.ase_mdmx = 0; | |
10984 | break; | |
10985 | ||
252b5132 RH |
10986 | case OPTION_MIPS16: |
10987 | mips_opts.mips16 = 1; | |
b34976b6 | 10988 | mips_no_prev_insn (FALSE); |
252b5132 RH |
10989 | break; |
10990 | ||
10991 | case OPTION_NO_MIPS16: | |
10992 | mips_opts.mips16 = 0; | |
b34976b6 | 10993 | mips_no_prev_insn (FALSE); |
252b5132 RH |
10994 | break; |
10995 | ||
1f25f5d3 CD |
10996 | case OPTION_MIPS3D: |
10997 | mips_opts.ase_mips3d = 1; | |
10998 | break; | |
10999 | ||
11000 | case OPTION_NO_MIPS3D: | |
11001 | mips_opts.ase_mips3d = 0; | |
11002 | break; | |
11003 | ||
252b5132 RH |
11004 | case OPTION_MEMBEDDED_PIC: |
11005 | mips_pic = EMBEDDED_PIC; | |
11006 | if (USE_GLOBAL_POINTER_OPT && g_switch_seen) | |
11007 | { | |
11008 | as_bad (_("-G may not be used with embedded PIC code")); | |
11009 | return 0; | |
11010 | } | |
11011 | g_switch_value = 0x7fffffff; | |
11012 | break; | |
11013 | ||
60b63b72 RS |
11014 | case OPTION_FIX_VR4122: |
11015 | mips_fix_4122_bugs = 1; | |
11016 | break; | |
11017 | ||
11018 | case OPTION_NO_FIX_VR4122: | |
11019 | mips_fix_4122_bugs = 0; | |
11020 | break; | |
11021 | ||
4a6a3df4 AO |
11022 | case OPTION_RELAX_BRANCH: |
11023 | mips_relax_branch = 1; | |
11024 | break; | |
11025 | ||
11026 | case OPTION_NO_RELAX_BRANCH: | |
11027 | mips_relax_branch = 0; | |
11028 | break; | |
11029 | ||
0f074f60 | 11030 | #ifdef OBJ_ELF |
252b5132 RH |
11031 | /* When generating ELF code, we permit -KPIC and -call_shared to |
11032 | select SVR4_PIC, and -non_shared to select no PIC. This is | |
11033 | intended to be compatible with Irix 5. */ | |
11034 | case OPTION_CALL_SHARED: | |
11035 | if (OUTPUT_FLAVOR != bfd_target_elf_flavour) | |
11036 | { | |
11037 | as_bad (_("-call_shared is supported only for ELF format")); | |
11038 | return 0; | |
11039 | } | |
11040 | mips_pic = SVR4_PIC; | |
11041 | if (g_switch_seen && g_switch_value != 0) | |
11042 | { | |
11043 | as_bad (_("-G may not be used with SVR4 PIC code")); | |
11044 | return 0; | |
11045 | } | |
11046 | g_switch_value = 0; | |
11047 | break; | |
11048 | ||
11049 | case OPTION_NON_SHARED: | |
11050 | if (OUTPUT_FLAVOR != bfd_target_elf_flavour) | |
11051 | { | |
11052 | as_bad (_("-non_shared is supported only for ELF format")); | |
11053 | return 0; | |
11054 | } | |
11055 | mips_pic = NO_PIC; | |
11056 | break; | |
11057 | ||
11058 | /* The -xgot option tells the assembler to use 32 offsets when | |
11059 | accessing the got in SVR4_PIC mode. It is for Irix | |
11060 | compatibility. */ | |
11061 | case OPTION_XGOT: | |
11062 | mips_big_got = 1; | |
11063 | break; | |
0f074f60 | 11064 | #endif /* OBJ_ELF */ |
252b5132 RH |
11065 | |
11066 | case 'G': | |
11067 | if (! USE_GLOBAL_POINTER_OPT) | |
11068 | { | |
11069 | as_bad (_("-G is not supported for this configuration")); | |
11070 | return 0; | |
11071 | } | |
11072 | else if (mips_pic == SVR4_PIC || mips_pic == EMBEDDED_PIC) | |
11073 | { | |
11074 | as_bad (_("-G may not be used with SVR4 or embedded PIC code")); | |
11075 | return 0; | |
11076 | } | |
11077 | else | |
11078 | g_switch_value = atoi (arg); | |
11079 | g_switch_seen = 1; | |
11080 | break; | |
11081 | ||
0f074f60 | 11082 | #ifdef OBJ_ELF |
34ba82a8 TS |
11083 | /* The -32, -n32 and -64 options are shortcuts for -mabi=32, -mabi=n32 |
11084 | and -mabi=64. */ | |
252b5132 | 11085 | case OPTION_32: |
34ba82a8 TS |
11086 | if (OUTPUT_FLAVOR != bfd_target_elf_flavour) |
11087 | { | |
11088 | as_bad (_("-32 is supported for ELF format only")); | |
11089 | return 0; | |
11090 | } | |
316f5878 | 11091 | mips_abi = O32_ABI; |
252b5132 RH |
11092 | break; |
11093 | ||
e013f690 | 11094 | case OPTION_N32: |
34ba82a8 TS |
11095 | if (OUTPUT_FLAVOR != bfd_target_elf_flavour) |
11096 | { | |
11097 | as_bad (_("-n32 is supported for ELF format only")); | |
11098 | return 0; | |
11099 | } | |
316f5878 | 11100 | mips_abi = N32_ABI; |
e013f690 | 11101 | break; |
252b5132 | 11102 | |
e013f690 | 11103 | case OPTION_64: |
34ba82a8 TS |
11104 | if (OUTPUT_FLAVOR != bfd_target_elf_flavour) |
11105 | { | |
11106 | as_bad (_("-64 is supported for ELF format only")); | |
11107 | return 0; | |
11108 | } | |
316f5878 | 11109 | mips_abi = N64_ABI; |
e013f690 TS |
11110 | if (! support_64bit_objects()) |
11111 | as_fatal (_("No compiled in support for 64 bit object file format")); | |
252b5132 | 11112 | break; |
ae948b86 | 11113 | #endif /* OBJ_ELF */ |
252b5132 | 11114 | |
c97ef257 | 11115 | case OPTION_GP32: |
a325df1d | 11116 | file_mips_gp32 = 1; |
c97ef257 AH |
11117 | break; |
11118 | ||
11119 | case OPTION_GP64: | |
a325df1d | 11120 | file_mips_gp32 = 0; |
c97ef257 | 11121 | break; |
252b5132 | 11122 | |
ca4e0257 | 11123 | case OPTION_FP32: |
a325df1d | 11124 | file_mips_fp32 = 1; |
316f5878 RS |
11125 | break; |
11126 | ||
11127 | case OPTION_FP64: | |
11128 | file_mips_fp32 = 0; | |
ca4e0257 RS |
11129 | break; |
11130 | ||
ae948b86 | 11131 | #ifdef OBJ_ELF |
252b5132 | 11132 | case OPTION_MABI: |
34ba82a8 TS |
11133 | if (OUTPUT_FLAVOR != bfd_target_elf_flavour) |
11134 | { | |
11135 | as_bad (_("-mabi is supported for ELF format only")); | |
11136 | return 0; | |
11137 | } | |
e013f690 | 11138 | if (strcmp (arg, "32") == 0) |
316f5878 | 11139 | mips_abi = O32_ABI; |
e013f690 | 11140 | else if (strcmp (arg, "o64") == 0) |
316f5878 | 11141 | mips_abi = O64_ABI; |
e013f690 | 11142 | else if (strcmp (arg, "n32") == 0) |
316f5878 | 11143 | mips_abi = N32_ABI; |
e013f690 TS |
11144 | else if (strcmp (arg, "64") == 0) |
11145 | { | |
316f5878 | 11146 | mips_abi = N64_ABI; |
e013f690 TS |
11147 | if (! support_64bit_objects()) |
11148 | as_fatal (_("No compiled in support for 64 bit object file " | |
11149 | "format")); | |
11150 | } | |
11151 | else if (strcmp (arg, "eabi") == 0) | |
316f5878 | 11152 | mips_abi = EABI_ABI; |
e013f690 | 11153 | else |
da0e507f TS |
11154 | { |
11155 | as_fatal (_("invalid abi -mabi=%s"), arg); | |
11156 | return 0; | |
11157 | } | |
252b5132 | 11158 | break; |
e013f690 | 11159 | #endif /* OBJ_ELF */ |
252b5132 | 11160 | |
6b76fefe | 11161 | case OPTION_M7000_HILO_FIX: |
b34976b6 | 11162 | mips_7000_hilo_fix = TRUE; |
6b76fefe CM |
11163 | break; |
11164 | ||
9ee72ff1 | 11165 | case OPTION_MNO_7000_HILO_FIX: |
b34976b6 | 11166 | mips_7000_hilo_fix = FALSE; |
6b76fefe CM |
11167 | break; |
11168 | ||
ecb4347a DJ |
11169 | #ifdef OBJ_ELF |
11170 | case OPTION_MDEBUG: | |
b34976b6 | 11171 | mips_flag_mdebug = TRUE; |
ecb4347a DJ |
11172 | break; |
11173 | ||
11174 | case OPTION_NO_MDEBUG: | |
b34976b6 | 11175 | mips_flag_mdebug = FALSE; |
ecb4347a DJ |
11176 | break; |
11177 | #endif /* OBJ_ELF */ | |
11178 | ||
252b5132 RH |
11179 | default: |
11180 | return 0; | |
11181 | } | |
11182 | ||
11183 | return 1; | |
11184 | } | |
316f5878 RS |
11185 | \f |
11186 | /* Set up globals to generate code for the ISA or processor | |
11187 | described by INFO. */ | |
252b5132 | 11188 | |
252b5132 | 11189 | static void |
316f5878 RS |
11190 | mips_set_architecture (info) |
11191 | const struct mips_cpu_info *info; | |
252b5132 | 11192 | { |
316f5878 | 11193 | if (info != 0) |
252b5132 | 11194 | { |
316f5878 RS |
11195 | mips_arch_info = info; |
11196 | mips_arch = info->cpu; | |
11197 | mips_opts.isa = info->isa; | |
252b5132 | 11198 | } |
252b5132 RH |
11199 | } |
11200 | ||
252b5132 | 11201 | |
316f5878 | 11202 | /* Likewise for tuning. */ |
252b5132 | 11203 | |
316f5878 RS |
11204 | static void |
11205 | mips_set_tune (info) | |
11206 | const struct mips_cpu_info *info; | |
11207 | { | |
11208 | if (info != 0) | |
11209 | { | |
11210 | mips_tune_info = info; | |
11211 | mips_tune = info->cpu; | |
11212 | } | |
11213 | } | |
80cc45a5 | 11214 | |
34ba82a8 | 11215 | |
252b5132 | 11216 | void |
e9670677 MR |
11217 | mips_after_parse_args () |
11218 | { | |
e9670677 MR |
11219 | /* GP relative stuff not working for PE */ |
11220 | if (strncmp (TARGET_OS, "pe", 2) == 0 | |
11221 | && g_switch_value != 0) | |
11222 | { | |
11223 | if (g_switch_seen) | |
11224 | as_bad (_("-G not supported in this configuration.")); | |
11225 | g_switch_value = 0; | |
11226 | } | |
11227 | ||
22923709 RS |
11228 | /* The following code determines the architecture and register size. |
11229 | Similar code was added to GCC 3.3 (see override_options() in | |
11230 | config/mips/mips.c). The GAS and GCC code should be kept in sync | |
11231 | as much as possible. */ | |
e9670677 | 11232 | |
316f5878 RS |
11233 | if (mips_arch_string != 0) |
11234 | mips_set_architecture (mips_parse_cpu ("-march", mips_arch_string)); | |
e9670677 | 11235 | |
316f5878 RS |
11236 | if (mips_tune_string != 0) |
11237 | mips_set_tune (mips_parse_cpu ("-mtune", mips_tune_string)); | |
e9670677 | 11238 | |
316f5878 | 11239 | if (file_mips_isa != ISA_UNKNOWN) |
e9670677 | 11240 | { |
316f5878 RS |
11241 | /* Handle -mipsN. At this point, file_mips_isa contains the |
11242 | ISA level specified by -mipsN, while mips_opts.isa contains | |
11243 | the -march selection (if any). */ | |
11244 | if (mips_arch_info != 0) | |
e9670677 | 11245 | { |
316f5878 RS |
11246 | /* -march takes precedence over -mipsN, since it is more descriptive. |
11247 | There's no harm in specifying both as long as the ISA levels | |
11248 | are the same. */ | |
11249 | if (file_mips_isa != mips_opts.isa) | |
11250 | as_bad (_("-%s conflicts with the other architecture options, which imply -%s"), | |
11251 | mips_cpu_info_from_isa (file_mips_isa)->name, | |
11252 | mips_cpu_info_from_isa (mips_opts.isa)->name); | |
e9670677 | 11253 | } |
316f5878 RS |
11254 | else |
11255 | mips_set_architecture (mips_cpu_info_from_isa (file_mips_isa)); | |
e9670677 MR |
11256 | } |
11257 | ||
316f5878 RS |
11258 | if (mips_arch_info == 0) |
11259 | mips_set_architecture (mips_parse_cpu ("default CPU", | |
11260 | MIPS_CPU_STRING_DEFAULT)); | |
e9670677 | 11261 | |
316f5878 RS |
11262 | if (ABI_NEEDS_64BIT_REGS (mips_abi) && !ISA_HAS_64BIT_REGS (mips_opts.isa)) |
11263 | as_bad ("-march=%s is not compatible with the selected ABI", | |
11264 | mips_arch_info->name); | |
e9670677 | 11265 | |
316f5878 RS |
11266 | /* Optimize for mips_arch, unless -mtune selects a different processor. */ |
11267 | if (mips_tune_info == 0) | |
11268 | mips_set_tune (mips_arch_info); | |
e9670677 | 11269 | |
316f5878 | 11270 | if (file_mips_gp32 >= 0) |
e9670677 | 11271 | { |
316f5878 RS |
11272 | /* The user specified the size of the integer registers. Make sure |
11273 | it agrees with the ABI and ISA. */ | |
11274 | if (file_mips_gp32 == 0 && !ISA_HAS_64BIT_REGS (mips_opts.isa)) | |
11275 | as_bad (_("-mgp64 used with a 32-bit processor")); | |
11276 | else if (file_mips_gp32 == 1 && ABI_NEEDS_64BIT_REGS (mips_abi)) | |
11277 | as_bad (_("-mgp32 used with a 64-bit ABI")); | |
11278 | else if (file_mips_gp32 == 0 && ABI_NEEDS_32BIT_REGS (mips_abi)) | |
11279 | as_bad (_("-mgp64 used with a 32-bit ABI")); | |
e9670677 MR |
11280 | } |
11281 | else | |
11282 | { | |
316f5878 RS |
11283 | /* Infer the integer register size from the ABI and processor. |
11284 | Restrict ourselves to 32-bit registers if that's all the | |
11285 | processor has, or if the ABI cannot handle 64-bit registers. */ | |
11286 | file_mips_gp32 = (ABI_NEEDS_32BIT_REGS (mips_abi) | |
11287 | || !ISA_HAS_64BIT_REGS (mips_opts.isa)); | |
e9670677 MR |
11288 | } |
11289 | ||
316f5878 RS |
11290 | /* ??? GAS treats single-float processors as though they had 64-bit |
11291 | float registers (although it complains when double-precision | |
11292 | instructions are used). As things stand, saying they have 32-bit | |
11293 | registers would lead to spurious "register must be even" messages. | |
11294 | So here we assume float registers are always the same size as | |
11295 | integer ones, unless the user says otherwise. */ | |
11296 | if (file_mips_fp32 < 0) | |
11297 | file_mips_fp32 = file_mips_gp32; | |
e9670677 | 11298 | |
316f5878 | 11299 | /* End of GCC-shared inference code. */ |
e9670677 | 11300 | |
316f5878 RS |
11301 | /* ??? When do we want this flag to be set? Who uses it? */ |
11302 | if (file_mips_gp32 == 1 | |
11303 | && mips_abi == NO_ABI | |
11304 | && ISA_HAS_64BIT_REGS (mips_opts.isa)) | |
11305 | mips_32bitmode = 1; | |
e9670677 MR |
11306 | |
11307 | if (mips_opts.isa == ISA_MIPS1 && mips_trap) | |
11308 | as_bad (_("trap exception not supported at ISA 1")); | |
11309 | ||
e9670677 MR |
11310 | /* If the selected architecture includes support for ASEs, enable |
11311 | generation of code for them. */ | |
a4672219 TS |
11312 | if (mips_opts.mips16 == -1) |
11313 | mips_opts.mips16 = (CPU_HAS_MIPS16 (mips_arch)) ? 1 : 0; | |
ffdefa66 | 11314 | if (mips_opts.ase_mips3d == -1) |
a4672219 | 11315 | mips_opts.ase_mips3d = (CPU_HAS_MIPS3D (mips_arch)) ? 1 : 0; |
ffdefa66 | 11316 | if (mips_opts.ase_mdmx == -1) |
a4672219 | 11317 | mips_opts.ase_mdmx = (CPU_HAS_MDMX (mips_arch)) ? 1 : 0; |
e9670677 | 11318 | |
e9670677 | 11319 | file_mips_isa = mips_opts.isa; |
a4672219 | 11320 | file_ase_mips16 = mips_opts.mips16; |
e9670677 MR |
11321 | file_ase_mips3d = mips_opts.ase_mips3d; |
11322 | file_ase_mdmx = mips_opts.ase_mdmx; | |
11323 | mips_opts.gp32 = file_mips_gp32; | |
11324 | mips_opts.fp32 = file_mips_fp32; | |
11325 | ||
ecb4347a DJ |
11326 | if (mips_flag_mdebug < 0) |
11327 | { | |
11328 | #ifdef OBJ_MAYBE_ECOFF | |
11329 | if (OUTPUT_FLAVOR == bfd_target_ecoff_flavour) | |
11330 | mips_flag_mdebug = 1; | |
11331 | else | |
11332 | #endif /* OBJ_MAYBE_ECOFF */ | |
11333 | mips_flag_mdebug = 0; | |
11334 | } | |
e9670677 MR |
11335 | } |
11336 | \f | |
11337 | void | |
252b5132 RH |
11338 | mips_init_after_args () |
11339 | { | |
11340 | /* initialize opcodes */ | |
11341 | bfd_mips_num_opcodes = bfd_mips_num_builtin_opcodes; | |
beae10d5 | 11342 | mips_opcodes = (struct mips_opcode *) mips_builtin_opcodes; |
252b5132 RH |
11343 | } |
11344 | ||
11345 | long | |
11346 | md_pcrel_from (fixP) | |
11347 | fixS *fixP; | |
11348 | { | |
11349 | if (OUTPUT_FLAVOR != bfd_target_aout_flavour | |
11350 | && fixP->fx_addsy != (symbolS *) NULL | |
11351 | && ! S_IS_DEFINED (fixP->fx_addsy)) | |
af6ae2ad | 11352 | return 4; |
252b5132 | 11353 | |
c9914766 | 11354 | /* Return the address of the delay slot. */ |
252b5132 RH |
11355 | return fixP->fx_size + fixP->fx_where + fixP->fx_frag->fr_address; |
11356 | } | |
11357 | ||
252b5132 RH |
11358 | /* This is called before the symbol table is processed. In order to |
11359 | work with gcc when using mips-tfile, we must keep all local labels. | |
11360 | However, in other cases, we want to discard them. If we were | |
11361 | called with -g, but we didn't see any debugging information, it may | |
11362 | mean that gcc is smuggling debugging information through to | |
11363 | mips-tfile, in which case we must generate all local labels. */ | |
11364 | ||
11365 | void | |
11366 | mips_frob_file_before_adjust () | |
11367 | { | |
11368 | #ifndef NO_ECOFF_DEBUGGING | |
11369 | if (ECOFF_DEBUGGING | |
11370 | && mips_debug != 0 | |
11371 | && ! ecoff_debugging_seen) | |
11372 | flag_keep_locals = 1; | |
11373 | #endif | |
11374 | } | |
11375 | ||
11376 | /* Sort any unmatched HI16_S relocs so that they immediately precede | |
94f592af | 11377 | the corresponding LO reloc. This is called before md_apply_fix3 and |
252b5132 RH |
11378 | tc_gen_reloc. Unmatched HI16_S relocs can only be generated by |
11379 | explicit use of the %hi modifier. */ | |
11380 | ||
11381 | void | |
11382 | mips_frob_file () | |
11383 | { | |
11384 | struct mips_hi_fixup *l; | |
11385 | ||
11386 | for (l = mips_hi_fixup_list; l != NULL; l = l->next) | |
11387 | { | |
11388 | segment_info_type *seginfo; | |
11389 | int pass; | |
11390 | ||
5919d012 | 11391 | assert (reloc_needs_lo_p (l->fixp->fx_r_type)); |
252b5132 | 11392 | |
5919d012 RS |
11393 | /* If a GOT16 relocation turns out to be against a global symbol, |
11394 | there isn't supposed to be a matching LO. */ | |
11395 | if (l->fixp->fx_r_type == BFD_RELOC_MIPS_GOT16 | |
11396 | && !pic_need_relax (l->fixp->fx_addsy, l->seg)) | |
11397 | continue; | |
11398 | ||
11399 | /* Check quickly whether the next fixup happens to be a matching %lo. */ | |
11400 | if (fixup_has_matching_lo_p (l->fixp)) | |
252b5132 RH |
11401 | continue; |
11402 | ||
11403 | /* Look through the fixups for this segment for a matching %lo. | |
11404 | When we find one, move the %hi just in front of it. We do | |
11405 | this in two passes. In the first pass, we try to find a | |
11406 | unique %lo. In the second pass, we permit multiple %hi | |
11407 | relocs for a single %lo (this is a GNU extension). */ | |
11408 | seginfo = seg_info (l->seg); | |
11409 | for (pass = 0; pass < 2; pass++) | |
11410 | { | |
11411 | fixS *f, *prev; | |
11412 | ||
11413 | prev = NULL; | |
11414 | for (f = seginfo->fix_root; f != NULL; f = f->fx_next) | |
11415 | { | |
11416 | /* Check whether this is a %lo fixup which matches l->fixp. */ | |
11417 | if (f->fx_r_type == BFD_RELOC_LO16 | |
11418 | && f->fx_addsy == l->fixp->fx_addsy | |
11419 | && f->fx_offset == l->fixp->fx_offset | |
11420 | && (pass == 1 | |
11421 | || prev == NULL | |
5919d012 RS |
11422 | || !reloc_needs_lo_p (prev->fx_r_type) |
11423 | || !fixup_has_matching_lo_p (prev))) | |
252b5132 RH |
11424 | { |
11425 | fixS **pf; | |
11426 | ||
11427 | /* Move l->fixp before f. */ | |
11428 | for (pf = &seginfo->fix_root; | |
11429 | *pf != l->fixp; | |
11430 | pf = &(*pf)->fx_next) | |
11431 | assert (*pf != NULL); | |
11432 | ||
11433 | *pf = l->fixp->fx_next; | |
11434 | ||
11435 | l->fixp->fx_next = f; | |
11436 | if (prev == NULL) | |
11437 | seginfo->fix_root = l->fixp; | |
11438 | else | |
11439 | prev->fx_next = l->fixp; | |
11440 | ||
11441 | break; | |
11442 | } | |
11443 | ||
11444 | prev = f; | |
11445 | } | |
11446 | ||
11447 | if (f != NULL) | |
11448 | break; | |
11449 | ||
11450 | #if 0 /* GCC code motion plus incomplete dead code elimination | |
11451 | can leave a %hi without a %lo. */ | |
11452 | if (pass == 1) | |
11453 | as_warn_where (l->fixp->fx_file, l->fixp->fx_line, | |
11454 | _("Unmatched %%hi reloc")); | |
11455 | #endif | |
11456 | } | |
11457 | } | |
11458 | } | |
11459 | ||
11460 | /* When generating embedded PIC code we need to use a special | |
11461 | relocation to represent the difference of two symbols in the .text | |
11462 | section (switch tables use a difference of this sort). See | |
11463 | include/coff/mips.h for details. This macro checks whether this | |
11464 | fixup requires the special reloc. */ | |
11465 | #define SWITCH_TABLE(fixp) \ | |
11466 | ((fixp)->fx_r_type == BFD_RELOC_32 \ | |
bb2d6cd7 | 11467 | && OUTPUT_FLAVOR != bfd_target_elf_flavour \ |
252b5132 RH |
11468 | && (fixp)->fx_addsy != NULL \ |
11469 | && (fixp)->fx_subsy != NULL \ | |
11470 | && S_GET_SEGMENT ((fixp)->fx_addsy) == text_section \ | |
11471 | && S_GET_SEGMENT ((fixp)->fx_subsy) == text_section) | |
11472 | ||
11473 | /* When generating embedded PIC code we must keep all PC relative | |
11474 | relocations, in case the linker has to relax a call. We also need | |
f6688943 TS |
11475 | to keep relocations for switch table entries. |
11476 | ||
11477 | We may have combined relocations without symbols in the N32/N64 ABI. | |
11478 | We have to prevent gas from dropping them. */ | |
252b5132 | 11479 | |
252b5132 RH |
11480 | int |
11481 | mips_force_relocation (fixp) | |
11482 | fixS *fixp; | |
11483 | { | |
ae6063d4 | 11484 | if (generic_force_reloc (fixp)) |
252b5132 RH |
11485 | return 1; |
11486 | ||
f6688943 TS |
11487 | if (HAVE_NEWABI |
11488 | && S_GET_SEGMENT (fixp->fx_addsy) == bfd_abs_section_ptr | |
11489 | && (fixp->fx_r_type == BFD_RELOC_MIPS_SUB | |
11490 | || fixp->fx_r_type == BFD_RELOC_HI16_S | |
11491 | || fixp->fx_r_type == BFD_RELOC_LO16)) | |
11492 | return 1; | |
11493 | ||
252b5132 RH |
11494 | return (mips_pic == EMBEDDED_PIC |
11495 | && (fixp->fx_pcrel | |
11496 | || SWITCH_TABLE (fixp) | |
11497 | || fixp->fx_r_type == BFD_RELOC_PCREL_HI16_S | |
11498 | || fixp->fx_r_type == BFD_RELOC_PCREL_LO16)); | |
11499 | } | |
11500 | ||
45f8dfe8 AO |
11501 | /* This hook is called before a fix is simplified. We don't really |
11502 | decide whether to skip a fix here. Rather, we turn global symbols | |
11503 | used as branch targets into local symbols, such that they undergo | |
11504 | simplification. We can only do this if the symbol is defined and | |
11505 | it is in the same section as the branch. If this doesn't hold, we | |
11506 | emit a better error message than just saying the relocation is not | |
11507 | valid for the selected object format. | |
11508 | ||
11509 | FIXP is the fix-up we're going to try to simplify, SEG is the | |
11510 | segment in which the fix up occurs. The return value should be | |
11511 | non-zero to indicate the fix-up is valid for further | |
11512 | simplifications. */ | |
11513 | ||
11514 | int | |
11515 | mips_validate_fix (fixP, seg) | |
11516 | struct fix *fixP; | |
11517 | asection *seg; | |
11518 | { | |
11519 | /* There's a lot of discussion on whether it should be possible to | |
11520 | use R_MIPS_PC16 to represent branch relocations. The outcome | |
11521 | seems to be that it can, but gas/bfd are very broken in creating | |
11522 | RELA relocations for this, so for now we only accept branches to | |
11523 | symbols in the same section. Anything else is of dubious value, | |
11524 | since there's no guarantee that at link time the symbol would be | |
11525 | in range. Even for branches to local symbols this is arguably | |
11526 | wrong, since it we assume the symbol is not going to be | |
11527 | overridden, which should be possible per ELF library semantics, | |
11528 | but then, there isn't a dynamic relocation that could be used to | |
11529 | this effect, and the target would likely be out of range as well. | |
11530 | ||
11531 | Unfortunately, it seems that there is too much code out there | |
11532 | that relies on branches to symbols that are global to be resolved | |
11533 | as if they were local, like the IRIX tools do, so we do it as | |
11534 | well, but with a warning so that people are reminded to fix their | |
11535 | code. If we ever get back to using R_MIPS_PC16 for branch | |
11536 | targets, this entire block should go away (and probably the | |
11537 | whole function). */ | |
11538 | ||
11539 | if (fixP->fx_r_type == BFD_RELOC_16_PCREL_S2 | |
11540 | && (((OUTPUT_FLAVOR == bfd_target_ecoff_flavour | |
11541 | || OUTPUT_FLAVOR == bfd_target_elf_flavour) | |
11542 | && mips_pic != EMBEDDED_PIC) | |
11543 | || bfd_reloc_type_lookup (stdoutput, BFD_RELOC_16_PCREL_S2) == NULL) | |
11544 | && fixP->fx_addsy) | |
11545 | { | |
11546 | if (! S_IS_DEFINED (fixP->fx_addsy)) | |
11547 | { | |
11548 | as_bad_where (fixP->fx_file, fixP->fx_line, | |
11549 | _("Cannot branch to undefined symbol.")); | |
11550 | /* Avoid any further errors about this fixup. */ | |
11551 | fixP->fx_done = 1; | |
11552 | } | |
11553 | else if (S_GET_SEGMENT (fixP->fx_addsy) != seg) | |
11554 | { | |
11555 | as_bad_where (fixP->fx_file, fixP->fx_line, | |
11556 | _("Cannot branch to symbol in another section.")); | |
11557 | fixP->fx_done = 1; | |
11558 | } | |
11559 | else if (S_IS_EXTERNAL (fixP->fx_addsy)) | |
11560 | { | |
11561 | symbolS *sym = fixP->fx_addsy; | |
11562 | ||
11563 | as_warn_where (fixP->fx_file, fixP->fx_line, | |
11564 | _("Pretending global symbol used as branch target is local.")); | |
11565 | ||
11566 | fixP->fx_addsy = symbol_create (S_GET_NAME (sym), | |
11567 | S_GET_SEGMENT (sym), | |
11568 | S_GET_VALUE (sym), | |
11569 | symbol_get_frag (sym)); | |
11570 | copy_symbol_attributes (fixP->fx_addsy, sym); | |
11571 | S_CLEAR_EXTERNAL (fixP->fx_addsy); | |
11572 | assert (symbol_resolved_p (sym)); | |
11573 | symbol_mark_resolved (fixP->fx_addsy); | |
11574 | } | |
11575 | } | |
11576 | ||
11577 | return 1; | |
11578 | } | |
11579 | ||
add55e1f RS |
11580 | #ifdef OBJ_ELF |
11581 | static int | |
11582 | mips_need_elf_addend_fixup (fixP) | |
11583 | fixS *fixP; | |
11584 | { | |
2d2bf3e0 CD |
11585 | if (S_GET_OTHER (fixP->fx_addsy) == STO_MIPS16) |
11586 | return 1; | |
b25a253c CD |
11587 | if (mips_pic == EMBEDDED_PIC |
11588 | && S_IS_WEAK (fixP->fx_addsy)) | |
11589 | return 1; | |
11590 | if (mips_pic != EMBEDDED_PIC | |
11591 | && (S_IS_WEAK (fixP->fx_addsy) | |
bad9ca53 | 11592 | || S_IS_EXTERNAL (fixP->fx_addsy)) |
2d2bf3e0 CD |
11593 | && !S_IS_COMMON (fixP->fx_addsy)) |
11594 | return 1; | |
9204e615 DJ |
11595 | if (((bfd_get_section_flags (stdoutput, |
11596 | S_GET_SEGMENT (fixP->fx_addsy)) | |
11597 | & (SEC_LINK_ONCE | SEC_MERGE)) != 0) | |
11598 | || !strncmp (segment_name (S_GET_SEGMENT (fixP->fx_addsy)), | |
11599 | ".gnu.linkonce", | |
11600 | sizeof (".gnu.linkonce") - 1)) | |
2d2bf3e0 CD |
11601 | return 1; |
11602 | return 0; | |
add55e1f RS |
11603 | } |
11604 | #endif | |
11605 | ||
252b5132 RH |
11606 | /* Apply a fixup to the object file. */ |
11607 | ||
94f592af NC |
11608 | void |
11609 | md_apply_fix3 (fixP, valP, seg) | |
252b5132 | 11610 | fixS *fixP; |
98d3f06f | 11611 | valueT *valP; |
94f592af | 11612 | segT seg ATTRIBUTE_UNUSED; |
252b5132 | 11613 | { |
874e8986 | 11614 | bfd_byte *buf; |
98aa84af AM |
11615 | long insn; |
11616 | valueT value; | |
ed6fb7bd | 11617 | static int previous_fx_r_type = 0; |
252b5132 | 11618 | |
65551fa4 CD |
11619 | /* FIXME: Maybe just return for all reloc types not listed below? |
11620 | Eric Christopher says: "This is stupid, please rewrite md_apply_fix3. */ | |
11621 | if (fixP->fx_r_type == BFD_RELOC_8) | |
11622 | return; | |
11623 | ||
252b5132 RH |
11624 | assert (fixP->fx_size == 4 |
11625 | || fixP->fx_r_type == BFD_RELOC_16 | |
f6688943 TS |
11626 | || fixP->fx_r_type == BFD_RELOC_32 |
11627 | || fixP->fx_r_type == BFD_RELOC_MIPS_JMP | |
11628 | || fixP->fx_r_type == BFD_RELOC_HI16_S | |
11629 | || fixP->fx_r_type == BFD_RELOC_LO16 | |
11630 | || fixP->fx_r_type == BFD_RELOC_GPREL16 | |
76b3015f | 11631 | || fixP->fx_r_type == BFD_RELOC_MIPS_LITERAL |
f6688943 | 11632 | || fixP->fx_r_type == BFD_RELOC_GPREL32 |
252b5132 | 11633 | || fixP->fx_r_type == BFD_RELOC_64 |
f6688943 TS |
11634 | || fixP->fx_r_type == BFD_RELOC_CTOR |
11635 | || fixP->fx_r_type == BFD_RELOC_MIPS_SUB | |
11636 | || fixP->fx_r_type == BFD_RELOC_MIPS_HIGHEST | |
11637 | || fixP->fx_r_type == BFD_RELOC_MIPS_HIGHER | |
11638 | || fixP->fx_r_type == BFD_RELOC_MIPS_SCN_DISP | |
11639 | || fixP->fx_r_type == BFD_RELOC_MIPS_REL16 | |
11640 | || fixP->fx_r_type == BFD_RELOC_MIPS_RELGOT | |
252b5132 | 11641 | || fixP->fx_r_type == BFD_RELOC_VTABLE_INHERIT |
438c16b8 TS |
11642 | || fixP->fx_r_type == BFD_RELOC_VTABLE_ENTRY |
11643 | || fixP->fx_r_type == BFD_RELOC_MIPS_JALR); | |
252b5132 | 11644 | |
98d3f06f | 11645 | value = *valP; |
252b5132 RH |
11646 | |
11647 | /* If we aren't adjusting this fixup to be against the section | |
11648 | symbol, we need to adjust the value. */ | |
11649 | #ifdef OBJ_ELF | |
11650 | if (fixP->fx_addsy != NULL && OUTPUT_FLAVOR == bfd_target_elf_flavour) | |
bb2d6cd7 | 11651 | { |
add55e1f | 11652 | if (mips_need_elf_addend_fixup (fixP)) |
98aa84af | 11653 | { |
d6e9d61a | 11654 | reloc_howto_type *howto; |
98aa84af | 11655 | valueT symval = S_GET_VALUE (fixP->fx_addsy); |
94f592af | 11656 | |
98aa84af | 11657 | value -= symval; |
d6e9d61a MR |
11658 | |
11659 | howto = bfd_reloc_type_lookup (stdoutput, fixP->fx_r_type); | |
9204e615 | 11660 | if (value != 0 && howto && howto->partial_inplace) |
98aa84af AM |
11661 | { |
11662 | /* In this case, the bfd_install_relocation routine will | |
11663 | incorrectly add the symbol value back in. We just want | |
7a49a8c2 | 11664 | the addend to appear in the object file. |
b34976b6 | 11665 | |
9204e615 DJ |
11666 | The condition above used to include |
11667 | "&& (! fixP->fx_pcrel || howto->pcrel_offset)". | |
11668 | ||
11669 | However, howto can't be trusted here, because we | |
11670 | might change the reloc type in tc_gen_reloc. We can | |
11671 | check howto->partial_inplace because that conversion | |
11672 | happens to preserve howto->partial_inplace; but it | |
11673 | does not preserve howto->pcrel_offset. I've just | |
11674 | eliminated the check, because all MIPS PC-relative | |
11675 | relocations are marked howto->pcrel_offset. | |
11676 | ||
11677 | howto->pcrel_offset was originally added for | |
11678 | R_MIPS_PC16, which is generated for code like | |
b34976b6 | 11679 | |
7a49a8c2 L |
11680 | globl g1 .text |
11681 | .text | |
11682 | .space 20 | |
11683 | g1: | |
11684 | x: | |
11685 | bal g1 | |
11686 | */ | |
98aa84af | 11687 | value -= symval; |
7461da6e RS |
11688 | |
11689 | /* Make sure the addend is still non-zero. If it became zero | |
11690 | after the last operation, set it to a spurious value and | |
11691 | subtract the same value from the object file's contents. */ | |
11692 | if (value == 0) | |
11693 | { | |
11694 | value = 8; | |
11695 | ||
11696 | /* The in-place addends for LO16 relocations are signed; | |
11697 | leave the matching HI16 in-place addends as zero. */ | |
11698 | if (fixP->fx_r_type != BFD_RELOC_HI16_S) | |
11699 | { | |
7461da6e RS |
11700 | bfd_vma contents, mask, field; |
11701 | ||
7461da6e RS |
11702 | contents = bfd_get_bits (fixP->fx_frag->fr_literal |
11703 | + fixP->fx_where, | |
11704 | fixP->fx_size * 8, | |
11705 | target_big_endian); | |
11706 | ||
11707 | /* MASK has bits set where the relocation should go. | |
11708 | FIELD is -value, shifted into the appropriate place | |
11709 | for this relocation. */ | |
11710 | mask = 1 << (howto->bitsize - 1); | |
11711 | mask = (((mask - 1) << 1) | 1) << howto->bitpos; | |
11712 | field = (-value >> howto->rightshift) << howto->bitpos; | |
11713 | ||
11714 | bfd_put_bits ((field & mask) | (contents & ~mask), | |
11715 | fixP->fx_frag->fr_literal + fixP->fx_where, | |
11716 | fixP->fx_size * 8, | |
11717 | target_big_endian); | |
11718 | } | |
11719 | } | |
98aa84af AM |
11720 | } |
11721 | } | |
252b5132 | 11722 | |
bb2d6cd7 GK |
11723 | /* This code was generated using trial and error and so is |
11724 | fragile and not trustworthy. If you change it, you should | |
11725 | rerun the elf-rel, elf-rel2, and empic testcases and ensure | |
11726 | they still pass. */ | |
11727 | if (fixP->fx_pcrel || fixP->fx_subsy != NULL) | |
11728 | { | |
11729 | value += fixP->fx_frag->fr_address + fixP->fx_where; | |
11730 | ||
11731 | /* BFD's REL handling, for MIPS, is _very_ weird. | |
11732 | This gives the right results, but it can't possibly | |
11733 | be the way things are supposed to work. */ | |
0b25d3e6 | 11734 | if (fixP->fx_r_type != BFD_RELOC_16_PCREL_S2 |
bb2d6cd7 GK |
11735 | || S_GET_SEGMENT (fixP->fx_addsy) != undefined_section) |
11736 | value += fixP->fx_frag->fr_address + fixP->fx_where; | |
11737 | } | |
11738 | } | |
11739 | #endif | |
252b5132 | 11740 | |
94f592af | 11741 | fixP->fx_addnumber = value; /* Remember value for tc_gen_reloc. */ |
252b5132 | 11742 | |
ed6fb7bd SC |
11743 | /* We are not done if this is a composite relocation to set up gp. */ |
11744 | if (fixP->fx_addsy == NULL && ! fixP->fx_pcrel | |
11745 | && !(fixP->fx_r_type == BFD_RELOC_MIPS_SUB | |
10181a0d AO |
11746 | || (fixP->fx_r_type == BFD_RELOC_64 |
11747 | && (previous_fx_r_type == BFD_RELOC_GPREL32 | |
11748 | || previous_fx_r_type == BFD_RELOC_GPREL16)) | |
ed6fb7bd SC |
11749 | || (previous_fx_r_type == BFD_RELOC_MIPS_SUB |
11750 | && (fixP->fx_r_type == BFD_RELOC_HI16_S | |
11751 | || fixP->fx_r_type == BFD_RELOC_LO16)))) | |
252b5132 | 11752 | fixP->fx_done = 1; |
ed6fb7bd | 11753 | previous_fx_r_type = fixP->fx_r_type; |
252b5132 RH |
11754 | |
11755 | switch (fixP->fx_r_type) | |
11756 | { | |
11757 | case BFD_RELOC_MIPS_JMP: | |
e369bcce TS |
11758 | case BFD_RELOC_MIPS_SHIFT5: |
11759 | case BFD_RELOC_MIPS_SHIFT6: | |
11760 | case BFD_RELOC_MIPS_GOT_DISP: | |
11761 | case BFD_RELOC_MIPS_GOT_PAGE: | |
11762 | case BFD_RELOC_MIPS_GOT_OFST: | |
11763 | case BFD_RELOC_MIPS_SUB: | |
11764 | case BFD_RELOC_MIPS_INSERT_A: | |
11765 | case BFD_RELOC_MIPS_INSERT_B: | |
11766 | case BFD_RELOC_MIPS_DELETE: | |
11767 | case BFD_RELOC_MIPS_HIGHEST: | |
11768 | case BFD_RELOC_MIPS_HIGHER: | |
11769 | case BFD_RELOC_MIPS_SCN_DISP: | |
11770 | case BFD_RELOC_MIPS_REL16: | |
11771 | case BFD_RELOC_MIPS_RELGOT: | |
11772 | case BFD_RELOC_MIPS_JALR: | |
252b5132 RH |
11773 | case BFD_RELOC_HI16: |
11774 | case BFD_RELOC_HI16_S: | |
cdf6fd85 | 11775 | case BFD_RELOC_GPREL16: |
252b5132 RH |
11776 | case BFD_RELOC_MIPS_LITERAL: |
11777 | case BFD_RELOC_MIPS_CALL16: | |
11778 | case BFD_RELOC_MIPS_GOT16: | |
cdf6fd85 | 11779 | case BFD_RELOC_GPREL32: |
252b5132 RH |
11780 | case BFD_RELOC_MIPS_GOT_HI16: |
11781 | case BFD_RELOC_MIPS_GOT_LO16: | |
11782 | case BFD_RELOC_MIPS_CALL_HI16: | |
11783 | case BFD_RELOC_MIPS_CALL_LO16: | |
11784 | case BFD_RELOC_MIPS16_GPREL: | |
11785 | if (fixP->fx_pcrel) | |
11786 | as_bad_where (fixP->fx_file, fixP->fx_line, | |
11787 | _("Invalid PC relative reloc")); | |
11788 | /* Nothing needed to do. The value comes from the reloc entry */ | |
11789 | break; | |
11790 | ||
11791 | case BFD_RELOC_MIPS16_JMP: | |
11792 | /* We currently always generate a reloc against a symbol, which | |
11793 | means that we don't want an addend even if the symbol is | |
11794 | defined. */ | |
11795 | fixP->fx_addnumber = 0; | |
11796 | break; | |
11797 | ||
11798 | case BFD_RELOC_PCREL_HI16_S: | |
11799 | /* The addend for this is tricky if it is internal, so we just | |
11800 | do everything here rather than in bfd_install_relocation. */ | |
bdaaa2e1 | 11801 | if (OUTPUT_FLAVOR == bfd_target_elf_flavour |
bb2d6cd7 GK |
11802 | && !fixP->fx_done |
11803 | && value != 0) | |
11804 | break; | |
11805 | if (fixP->fx_addsy | |
11806 | && (symbol_get_bfdsym (fixP->fx_addsy)->flags & BSF_SECTION_SYM) == 0) | |
252b5132 RH |
11807 | { |
11808 | /* For an external symbol adjust by the address to make it | |
11809 | pcrel_offset. We use the address of the RELLO reloc | |
11810 | which follows this one. */ | |
11811 | value += (fixP->fx_next->fx_frag->fr_address | |
11812 | + fixP->fx_next->fx_where); | |
11813 | } | |
e7d556df | 11814 | value = ((value + 0x8000) >> 16) & 0xffff; |
874e8986 | 11815 | buf = (bfd_byte *) fixP->fx_frag->fr_literal + fixP->fx_where; |
252b5132 RH |
11816 | if (target_big_endian) |
11817 | buf += 2; | |
874e8986 | 11818 | md_number_to_chars ((char *) buf, value, 2); |
252b5132 RH |
11819 | break; |
11820 | ||
11821 | case BFD_RELOC_PCREL_LO16: | |
11822 | /* The addend for this is tricky if it is internal, so we just | |
11823 | do everything here rather than in bfd_install_relocation. */ | |
bdaaa2e1 | 11824 | if (OUTPUT_FLAVOR == bfd_target_elf_flavour |
bb2d6cd7 GK |
11825 | && !fixP->fx_done |
11826 | && value != 0) | |
11827 | break; | |
11828 | if (fixP->fx_addsy | |
11829 | && (symbol_get_bfdsym (fixP->fx_addsy)->flags & BSF_SECTION_SYM) == 0) | |
252b5132 | 11830 | value += fixP->fx_frag->fr_address + fixP->fx_where; |
874e8986 | 11831 | buf = (bfd_byte *) fixP->fx_frag->fr_literal + fixP->fx_where; |
252b5132 RH |
11832 | if (target_big_endian) |
11833 | buf += 2; | |
874e8986 | 11834 | md_number_to_chars ((char *) buf, value, 2); |
252b5132 RH |
11835 | break; |
11836 | ||
11837 | case BFD_RELOC_64: | |
11838 | /* This is handled like BFD_RELOC_32, but we output a sign | |
11839 | extended value if we are only 32 bits. */ | |
11840 | if (fixP->fx_done | |
11841 | || (mips_pic == EMBEDDED_PIC && SWITCH_TABLE (fixP))) | |
11842 | { | |
11843 | if (8 <= sizeof (valueT)) | |
11844 | md_number_to_chars (fixP->fx_frag->fr_literal + fixP->fx_where, | |
11845 | value, 8); | |
11846 | else | |
11847 | { | |
11848 | long w1, w2; | |
11849 | long hiv; | |
11850 | ||
11851 | w1 = w2 = fixP->fx_where; | |
11852 | if (target_big_endian) | |
11853 | w1 += 4; | |
11854 | else | |
11855 | w2 += 4; | |
11856 | md_number_to_chars (fixP->fx_frag->fr_literal + w1, value, 4); | |
11857 | if ((value & 0x80000000) != 0) | |
11858 | hiv = 0xffffffff; | |
11859 | else | |
11860 | hiv = 0; | |
11861 | md_number_to_chars (fixP->fx_frag->fr_literal + w2, hiv, 4); | |
11862 | } | |
11863 | } | |
11864 | break; | |
11865 | ||
056350c6 | 11866 | case BFD_RELOC_RVA: |
252b5132 RH |
11867 | case BFD_RELOC_32: |
11868 | /* If we are deleting this reloc entry, we must fill in the | |
11869 | value now. This can happen if we have a .word which is not | |
11870 | resolved when it appears but is later defined. We also need | |
11871 | to fill in the value if this is an embedded PIC switch table | |
11872 | entry. */ | |
11873 | if (fixP->fx_done | |
11874 | || (mips_pic == EMBEDDED_PIC && SWITCH_TABLE (fixP))) | |
11875 | md_number_to_chars (fixP->fx_frag->fr_literal + fixP->fx_where, | |
11876 | value, 4); | |
11877 | break; | |
11878 | ||
11879 | case BFD_RELOC_16: | |
11880 | /* If we are deleting this reloc entry, we must fill in the | |
11881 | value now. */ | |
11882 | assert (fixP->fx_size == 2); | |
11883 | if (fixP->fx_done) | |
11884 | md_number_to_chars (fixP->fx_frag->fr_literal + fixP->fx_where, | |
11885 | value, 2); | |
11886 | break; | |
11887 | ||
11888 | case BFD_RELOC_LO16: | |
11889 | /* When handling an embedded PIC switch statement, we can wind | |
11890 | up deleting a LO16 reloc. See the 'o' case in mips_ip. */ | |
11891 | if (fixP->fx_done) | |
11892 | { | |
98aa84af | 11893 | if (value + 0x8000 > 0xffff) |
252b5132 RH |
11894 | as_bad_where (fixP->fx_file, fixP->fx_line, |
11895 | _("relocation overflow")); | |
874e8986 | 11896 | buf = (bfd_byte *) fixP->fx_frag->fr_literal + fixP->fx_where; |
252b5132 RH |
11897 | if (target_big_endian) |
11898 | buf += 2; | |
874e8986 | 11899 | md_number_to_chars ((char *) buf, value, 2); |
252b5132 RH |
11900 | } |
11901 | break; | |
11902 | ||
11903 | case BFD_RELOC_16_PCREL_S2: | |
cb56d3d3 TS |
11904 | if ((value & 0x3) != 0) |
11905 | as_bad_where (fixP->fx_file, fixP->fx_line, | |
0b25d3e6 | 11906 | _("Branch to odd address (%lx)"), (long) value); |
cb56d3d3 | 11907 | |
252b5132 RH |
11908 | /* |
11909 | * We need to save the bits in the instruction since fixup_segment() | |
11910 | * might be deleting the relocation entry (i.e., a branch within | |
11911 | * the current segment). | |
11912 | */ | |
af6ae2ad | 11913 | if (!fixP->fx_done && (value != 0 || HAVE_NEWABI)) |
bb2d6cd7 GK |
11914 | break; |
11915 | /* If 'value' is zero, the remaining reloc code won't actually | |
11916 | do the store, so it must be done here. This is probably | |
11917 | a bug somewhere. */ | |
b25a253c | 11918 | if (!fixP->fx_done |
0b25d3e6 AO |
11919 | && (fixP->fx_r_type != BFD_RELOC_16_PCREL_S2 |
11920 | || fixP->fx_addsy == NULL /* ??? */ | |
b25a253c | 11921 | || ! S_IS_DEFINED (fixP->fx_addsy))) |
bb2d6cd7 | 11922 | value -= fixP->fx_frag->fr_address + fixP->fx_where; |
bdaaa2e1 | 11923 | |
98aa84af | 11924 | value = (offsetT) value >> 2; |
252b5132 RH |
11925 | |
11926 | /* update old instruction data */ | |
874e8986 | 11927 | buf = (bfd_byte *) (fixP->fx_where + fixP->fx_frag->fr_literal); |
252b5132 RH |
11928 | if (target_big_endian) |
11929 | insn = (buf[0] << 24) | (buf[1] << 16) | (buf[2] << 8) | buf[3]; | |
11930 | else | |
11931 | insn = (buf[3] << 24) | (buf[2] << 16) | (buf[1] << 8) | buf[0]; | |
11932 | ||
98aa84af | 11933 | if (value + 0x8000 <= 0xffff) |
252b5132 RH |
11934 | insn |= value & 0xffff; |
11935 | else | |
11936 | { | |
11937 | /* The branch offset is too large. If this is an | |
11938 | unconditional branch, and we are not generating PIC code, | |
11939 | we can convert it to an absolute jump instruction. */ | |
11940 | if (mips_pic == NO_PIC | |
11941 | && fixP->fx_done | |
11942 | && fixP->fx_frag->fr_address >= text_section->vma | |
11943 | && (fixP->fx_frag->fr_address | |
11944 | < text_section->vma + text_section->_raw_size) | |
11945 | && ((insn & 0xffff0000) == 0x10000000 /* beq $0,$0 */ | |
11946 | || (insn & 0xffff0000) == 0x04010000 /* bgez $0 */ | |
11947 | || (insn & 0xffff0000) == 0x04110000)) /* bgezal $0 */ | |
11948 | { | |
11949 | if ((insn & 0xffff0000) == 0x04110000) /* bgezal $0 */ | |
11950 | insn = 0x0c000000; /* jal */ | |
11951 | else | |
11952 | insn = 0x08000000; /* j */ | |
11953 | fixP->fx_r_type = BFD_RELOC_MIPS_JMP; | |
11954 | fixP->fx_done = 0; | |
11955 | fixP->fx_addsy = section_symbol (text_section); | |
11956 | fixP->fx_addnumber = (value << 2) + md_pcrel_from (fixP); | |
11957 | } | |
11958 | else | |
11959 | { | |
4a6a3df4 AO |
11960 | /* If we got here, we have branch-relaxation disabled, |
11961 | and there's nothing we can do to fix this instruction | |
11962 | without turning it into a longer sequence. */ | |
252b5132 RH |
11963 | as_bad_where (fixP->fx_file, fixP->fx_line, |
11964 | _("Branch out of range")); | |
11965 | } | |
11966 | } | |
11967 | ||
11968 | md_number_to_chars ((char *) buf, (valueT) insn, 4); | |
11969 | break; | |
11970 | ||
11971 | case BFD_RELOC_VTABLE_INHERIT: | |
11972 | fixP->fx_done = 0; | |
11973 | if (fixP->fx_addsy | |
11974 | && !S_IS_DEFINED (fixP->fx_addsy) | |
11975 | && !S_IS_WEAK (fixP->fx_addsy)) | |
11976 | S_SET_WEAK (fixP->fx_addsy); | |
11977 | break; | |
11978 | ||
11979 | case BFD_RELOC_VTABLE_ENTRY: | |
11980 | fixP->fx_done = 0; | |
11981 | break; | |
11982 | ||
11983 | default: | |
11984 | internalError (); | |
11985 | } | |
252b5132 RH |
11986 | } |
11987 | ||
11988 | #if 0 | |
11989 | void | |
11990 | printInsn (oc) | |
11991 | unsigned long oc; | |
11992 | { | |
11993 | const struct mips_opcode *p; | |
11994 | int treg, sreg, dreg, shamt; | |
11995 | short imm; | |
11996 | const char *args; | |
11997 | int i; | |
11998 | ||
11999 | for (i = 0; i < NUMOPCODES; ++i) | |
12000 | { | |
12001 | p = &mips_opcodes[i]; | |
12002 | if (((oc & p->mask) == p->match) && (p->pinfo != INSN_MACRO)) | |
12003 | { | |
12004 | printf ("%08lx %s\t", oc, p->name); | |
12005 | treg = (oc >> 16) & 0x1f; | |
12006 | sreg = (oc >> 21) & 0x1f; | |
12007 | dreg = (oc >> 11) & 0x1f; | |
12008 | shamt = (oc >> 6) & 0x1f; | |
12009 | imm = oc; | |
12010 | for (args = p->args;; ++args) | |
12011 | { | |
12012 | switch (*args) | |
12013 | { | |
12014 | case '\0': | |
12015 | printf ("\n"); | |
12016 | break; | |
12017 | ||
12018 | case ',': | |
12019 | case '(': | |
12020 | case ')': | |
12021 | printf ("%c", *args); | |
12022 | continue; | |
12023 | ||
12024 | case 'r': | |
12025 | assert (treg == sreg); | |
12026 | printf ("$%d,$%d", treg, sreg); | |
12027 | continue; | |
12028 | ||
12029 | case 'd': | |
12030 | case 'G': | |
12031 | printf ("$%d", dreg); | |
12032 | continue; | |
12033 | ||
12034 | case 't': | |
12035 | case 'E': | |
12036 | printf ("$%d", treg); | |
12037 | continue; | |
12038 | ||
12039 | case 'k': | |
12040 | printf ("0x%x", treg); | |
12041 | continue; | |
12042 | ||
12043 | case 'b': | |
12044 | case 's': | |
12045 | printf ("$%d", sreg); | |
12046 | continue; | |
12047 | ||
12048 | case 'a': | |
12049 | printf ("0x%08lx", oc & 0x1ffffff); | |
12050 | continue; | |
12051 | ||
12052 | case 'i': | |
12053 | case 'j': | |
12054 | case 'o': | |
12055 | case 'u': | |
12056 | printf ("%d", imm); | |
12057 | continue; | |
12058 | ||
12059 | case '<': | |
12060 | case '>': | |
12061 | printf ("$%d", shamt); | |
12062 | continue; | |
12063 | ||
12064 | default: | |
12065 | internalError (); | |
12066 | } | |
12067 | break; | |
12068 | } | |
12069 | return; | |
12070 | } | |
12071 | } | |
12072 | printf (_("%08lx UNDEFINED\n"), oc); | |
12073 | } | |
12074 | #endif | |
12075 | ||
12076 | static symbolS * | |
12077 | get_symbol () | |
12078 | { | |
12079 | int c; | |
12080 | char *name; | |
12081 | symbolS *p; | |
12082 | ||
12083 | name = input_line_pointer; | |
12084 | c = get_symbol_end (); | |
12085 | p = (symbolS *) symbol_find_or_make (name); | |
12086 | *input_line_pointer = c; | |
12087 | return p; | |
12088 | } | |
12089 | ||
12090 | /* Align the current frag to a given power of two. The MIPS assembler | |
12091 | also automatically adjusts any preceding label. */ | |
12092 | ||
12093 | static void | |
12094 | mips_align (to, fill, label) | |
12095 | int to; | |
12096 | int fill; | |
12097 | symbolS *label; | |
12098 | { | |
b34976b6 | 12099 | mips_emit_delays (FALSE); |
252b5132 RH |
12100 | frag_align (to, fill, 0); |
12101 | record_alignment (now_seg, to); | |
12102 | if (label != NULL) | |
12103 | { | |
12104 | assert (S_GET_SEGMENT (label) == now_seg); | |
49309057 | 12105 | symbol_set_frag (label, frag_now); |
252b5132 RH |
12106 | S_SET_VALUE (label, (valueT) frag_now_fix ()); |
12107 | } | |
12108 | } | |
12109 | ||
12110 | /* Align to a given power of two. .align 0 turns off the automatic | |
12111 | alignment used by the data creating pseudo-ops. */ | |
12112 | ||
12113 | static void | |
12114 | s_align (x) | |
43841e91 | 12115 | int x ATTRIBUTE_UNUSED; |
252b5132 RH |
12116 | { |
12117 | register int temp; | |
12118 | register long temp_fill; | |
12119 | long max_alignment = 15; | |
12120 | ||
12121 | /* | |
12122 | ||
12123 | o Note that the assembler pulls down any immediately preceeding label | |
12124 | to the aligned address. | |
12125 | o It's not documented but auto alignment is reinstated by | |
12126 | a .align pseudo instruction. | |
12127 | o Note also that after auto alignment is turned off the mips assembler | |
12128 | issues an error on attempt to assemble an improperly aligned data item. | |
12129 | We don't. | |
12130 | ||
12131 | */ | |
12132 | ||
12133 | temp = get_absolute_expression (); | |
12134 | if (temp > max_alignment) | |
12135 | as_bad (_("Alignment too large: %d. assumed."), temp = max_alignment); | |
12136 | else if (temp < 0) | |
12137 | { | |
12138 | as_warn (_("Alignment negative: 0 assumed.")); | |
12139 | temp = 0; | |
12140 | } | |
12141 | if (*input_line_pointer == ',') | |
12142 | { | |
f9419b05 | 12143 | ++input_line_pointer; |
252b5132 RH |
12144 | temp_fill = get_absolute_expression (); |
12145 | } | |
12146 | else | |
12147 | temp_fill = 0; | |
12148 | if (temp) | |
12149 | { | |
12150 | auto_align = 1; | |
12151 | mips_align (temp, (int) temp_fill, | |
12152 | insn_labels != NULL ? insn_labels->label : NULL); | |
12153 | } | |
12154 | else | |
12155 | { | |
12156 | auto_align = 0; | |
12157 | } | |
12158 | ||
12159 | demand_empty_rest_of_line (); | |
12160 | } | |
12161 | ||
12162 | void | |
12163 | mips_flush_pending_output () | |
12164 | { | |
b34976b6 | 12165 | mips_emit_delays (FALSE); |
252b5132 RH |
12166 | mips_clear_insn_labels (); |
12167 | } | |
12168 | ||
12169 | static void | |
12170 | s_change_sec (sec) | |
12171 | int sec; | |
12172 | { | |
12173 | segT seg; | |
12174 | ||
12175 | /* When generating embedded PIC code, we only use the .text, .lit8, | |
12176 | .sdata and .sbss sections. We change the .data and .rdata | |
12177 | pseudo-ops to use .sdata. */ | |
12178 | if (mips_pic == EMBEDDED_PIC | |
12179 | && (sec == 'd' || sec == 'r')) | |
12180 | sec = 's'; | |
12181 | ||
12182 | #ifdef OBJ_ELF | |
12183 | /* The ELF backend needs to know that we are changing sections, so | |
12184 | that .previous works correctly. We could do something like check | |
b6ff326e | 12185 | for an obj_section_change_hook macro, but that might be confusing |
252b5132 RH |
12186 | as it would not be appropriate to use it in the section changing |
12187 | functions in read.c, since obj-elf.c intercepts those. FIXME: | |
12188 | This should be cleaner, somehow. */ | |
12189 | obj_elf_section_change_hook (); | |
12190 | #endif | |
12191 | ||
b34976b6 | 12192 | mips_emit_delays (FALSE); |
252b5132 RH |
12193 | switch (sec) |
12194 | { | |
12195 | case 't': | |
12196 | s_text (0); | |
12197 | break; | |
12198 | case 'd': | |
12199 | s_data (0); | |
12200 | break; | |
12201 | case 'b': | |
12202 | subseg_set (bss_section, (subsegT) get_absolute_expression ()); | |
12203 | demand_empty_rest_of_line (); | |
12204 | break; | |
12205 | ||
12206 | case 'r': | |
12207 | if (USE_GLOBAL_POINTER_OPT) | |
12208 | { | |
12209 | seg = subseg_new (RDATA_SECTION_NAME, | |
12210 | (subsegT) get_absolute_expression ()); | |
12211 | if (OUTPUT_FLAVOR == bfd_target_elf_flavour) | |
12212 | { | |
12213 | bfd_set_section_flags (stdoutput, seg, | |
12214 | (SEC_ALLOC | |
12215 | | SEC_LOAD | |
12216 | | SEC_READONLY | |
12217 | | SEC_RELOC | |
12218 | | SEC_DATA)); | |
12219 | if (strcmp (TARGET_OS, "elf") != 0) | |
e799a695 | 12220 | record_alignment (seg, 4); |
252b5132 RH |
12221 | } |
12222 | demand_empty_rest_of_line (); | |
12223 | } | |
12224 | else | |
12225 | { | |
12226 | as_bad (_("No read only data section in this object file format")); | |
12227 | demand_empty_rest_of_line (); | |
12228 | return; | |
12229 | } | |
12230 | break; | |
12231 | ||
12232 | case 's': | |
12233 | if (USE_GLOBAL_POINTER_OPT) | |
12234 | { | |
12235 | seg = subseg_new (".sdata", (subsegT) get_absolute_expression ()); | |
12236 | if (OUTPUT_FLAVOR == bfd_target_elf_flavour) | |
12237 | { | |
12238 | bfd_set_section_flags (stdoutput, seg, | |
12239 | SEC_ALLOC | SEC_LOAD | SEC_RELOC | |
12240 | | SEC_DATA); | |
12241 | if (strcmp (TARGET_OS, "elf") != 0) | |
e799a695 | 12242 | record_alignment (seg, 4); |
252b5132 RH |
12243 | } |
12244 | demand_empty_rest_of_line (); | |
12245 | break; | |
12246 | } | |
12247 | else | |
12248 | { | |
12249 | as_bad (_("Global pointers not supported; recompile -G 0")); | |
12250 | demand_empty_rest_of_line (); | |
12251 | return; | |
12252 | } | |
12253 | } | |
12254 | ||
12255 | auto_align = 1; | |
12256 | } | |
b34976b6 | 12257 | |
cca86cc8 SC |
12258 | void |
12259 | s_change_section (ignore) | |
12260 | int ignore ATTRIBUTE_UNUSED; | |
12261 | { | |
7ed4a06a | 12262 | #ifdef OBJ_ELF |
cca86cc8 SC |
12263 | char *section_name; |
12264 | char c; | |
684022ea | 12265 | char next_c = 0; |
cca86cc8 SC |
12266 | int section_type; |
12267 | int section_flag; | |
12268 | int section_entry_size; | |
12269 | int section_alignment; | |
b34976b6 | 12270 | |
7ed4a06a TS |
12271 | if (OUTPUT_FLAVOR != bfd_target_elf_flavour) |
12272 | return; | |
12273 | ||
cca86cc8 SC |
12274 | section_name = input_line_pointer; |
12275 | c = get_symbol_end (); | |
a816d1ed AO |
12276 | if (c) |
12277 | next_c = *(input_line_pointer + 1); | |
cca86cc8 | 12278 | |
4cf0dd0d TS |
12279 | /* Do we have .section Name<,"flags">? */ |
12280 | if (c != ',' || (c == ',' && next_c == '"')) | |
cca86cc8 | 12281 | { |
4cf0dd0d TS |
12282 | /* just after name is now '\0'. */ |
12283 | *input_line_pointer = c; | |
cca86cc8 SC |
12284 | input_line_pointer = section_name; |
12285 | obj_elf_section (ignore); | |
12286 | return; | |
12287 | } | |
12288 | input_line_pointer++; | |
12289 | ||
12290 | /* Do we have .section Name<,type><,flag><,entry_size><,alignment> */ | |
12291 | if (c == ',') | |
12292 | section_type = get_absolute_expression (); | |
12293 | else | |
12294 | section_type = 0; | |
12295 | if (*input_line_pointer++ == ',') | |
12296 | section_flag = get_absolute_expression (); | |
12297 | else | |
12298 | section_flag = 0; | |
12299 | if (*input_line_pointer++ == ',') | |
12300 | section_entry_size = get_absolute_expression (); | |
12301 | else | |
12302 | section_entry_size = 0; | |
12303 | if (*input_line_pointer++ == ',') | |
12304 | section_alignment = get_absolute_expression (); | |
12305 | else | |
12306 | section_alignment = 0; | |
12307 | ||
a816d1ed AO |
12308 | section_name = xstrdup (section_name); |
12309 | ||
cca86cc8 SC |
12310 | obj_elf_change_section (section_name, section_type, section_flag, |
12311 | section_entry_size, 0, 0, 0); | |
a816d1ed AO |
12312 | |
12313 | if (now_seg->name != section_name) | |
12314 | free (section_name); | |
7ed4a06a | 12315 | #endif /* OBJ_ELF */ |
cca86cc8 | 12316 | } |
252b5132 RH |
12317 | |
12318 | void | |
12319 | mips_enable_auto_align () | |
12320 | { | |
12321 | auto_align = 1; | |
12322 | } | |
12323 | ||
12324 | static void | |
12325 | s_cons (log_size) | |
12326 | int log_size; | |
12327 | { | |
12328 | symbolS *label; | |
12329 | ||
12330 | label = insn_labels != NULL ? insn_labels->label : NULL; | |
b34976b6 | 12331 | mips_emit_delays (FALSE); |
252b5132 RH |
12332 | if (log_size > 0 && auto_align) |
12333 | mips_align (log_size, 0, label); | |
12334 | mips_clear_insn_labels (); | |
12335 | cons (1 << log_size); | |
12336 | } | |
12337 | ||
12338 | static void | |
12339 | s_float_cons (type) | |
12340 | int type; | |
12341 | { | |
12342 | symbolS *label; | |
12343 | ||
12344 | label = insn_labels != NULL ? insn_labels->label : NULL; | |
12345 | ||
b34976b6 | 12346 | mips_emit_delays (FALSE); |
252b5132 RH |
12347 | |
12348 | if (auto_align) | |
49309057 ILT |
12349 | { |
12350 | if (type == 'd') | |
12351 | mips_align (3, 0, label); | |
12352 | else | |
12353 | mips_align (2, 0, label); | |
12354 | } | |
252b5132 RH |
12355 | |
12356 | mips_clear_insn_labels (); | |
12357 | ||
12358 | float_cons (type); | |
12359 | } | |
12360 | ||
12361 | /* Handle .globl. We need to override it because on Irix 5 you are | |
12362 | permitted to say | |
12363 | .globl foo .text | |
12364 | where foo is an undefined symbol, to mean that foo should be | |
12365 | considered to be the address of a function. */ | |
12366 | ||
12367 | static void | |
12368 | s_mips_globl (x) | |
43841e91 | 12369 | int x ATTRIBUTE_UNUSED; |
252b5132 RH |
12370 | { |
12371 | char *name; | |
12372 | int c; | |
12373 | symbolS *symbolP; | |
12374 | flagword flag; | |
12375 | ||
12376 | name = input_line_pointer; | |
12377 | c = get_symbol_end (); | |
12378 | symbolP = symbol_find_or_make (name); | |
12379 | *input_line_pointer = c; | |
12380 | SKIP_WHITESPACE (); | |
12381 | ||
12382 | /* On Irix 5, every global symbol that is not explicitly labelled as | |
12383 | being a function is apparently labelled as being an object. */ | |
12384 | flag = BSF_OBJECT; | |
12385 | ||
12386 | if (! is_end_of_line[(unsigned char) *input_line_pointer]) | |
12387 | { | |
12388 | char *secname; | |
12389 | asection *sec; | |
12390 | ||
12391 | secname = input_line_pointer; | |
12392 | c = get_symbol_end (); | |
12393 | sec = bfd_get_section_by_name (stdoutput, secname); | |
12394 | if (sec == NULL) | |
12395 | as_bad (_("%s: no such section"), secname); | |
12396 | *input_line_pointer = c; | |
12397 | ||
12398 | if (sec != NULL && (sec->flags & SEC_CODE) != 0) | |
12399 | flag = BSF_FUNCTION; | |
12400 | } | |
12401 | ||
49309057 | 12402 | symbol_get_bfdsym (symbolP)->flags |= flag; |
252b5132 RH |
12403 | |
12404 | S_SET_EXTERNAL (symbolP); | |
12405 | demand_empty_rest_of_line (); | |
12406 | } | |
12407 | ||
12408 | static void | |
12409 | s_option (x) | |
43841e91 | 12410 | int x ATTRIBUTE_UNUSED; |
252b5132 RH |
12411 | { |
12412 | char *opt; | |
12413 | char c; | |
12414 | ||
12415 | opt = input_line_pointer; | |
12416 | c = get_symbol_end (); | |
12417 | ||
12418 | if (*opt == 'O') | |
12419 | { | |
12420 | /* FIXME: What does this mean? */ | |
12421 | } | |
12422 | else if (strncmp (opt, "pic", 3) == 0) | |
12423 | { | |
12424 | int i; | |
12425 | ||
12426 | i = atoi (opt + 3); | |
12427 | if (i == 0) | |
12428 | mips_pic = NO_PIC; | |
12429 | else if (i == 2) | |
12430 | mips_pic = SVR4_PIC; | |
12431 | else | |
12432 | as_bad (_(".option pic%d not supported"), i); | |
12433 | ||
12434 | if (USE_GLOBAL_POINTER_OPT && mips_pic == SVR4_PIC) | |
12435 | { | |
12436 | if (g_switch_seen && g_switch_value != 0) | |
12437 | as_warn (_("-G may not be used with SVR4 PIC code")); | |
12438 | g_switch_value = 0; | |
12439 | bfd_set_gp_size (stdoutput, 0); | |
12440 | } | |
12441 | } | |
12442 | else | |
12443 | as_warn (_("Unrecognized option \"%s\""), opt); | |
12444 | ||
12445 | *input_line_pointer = c; | |
12446 | demand_empty_rest_of_line (); | |
12447 | } | |
12448 | ||
12449 | /* This structure is used to hold a stack of .set values. */ | |
12450 | ||
e972090a NC |
12451 | struct mips_option_stack |
12452 | { | |
252b5132 RH |
12453 | struct mips_option_stack *next; |
12454 | struct mips_set_options options; | |
12455 | }; | |
12456 | ||
12457 | static struct mips_option_stack *mips_opts_stack; | |
12458 | ||
12459 | /* Handle the .set pseudo-op. */ | |
12460 | ||
12461 | static void | |
12462 | s_mipsset (x) | |
43841e91 | 12463 | int x ATTRIBUTE_UNUSED; |
252b5132 RH |
12464 | { |
12465 | char *name = input_line_pointer, ch; | |
12466 | ||
12467 | while (!is_end_of_line[(unsigned char) *input_line_pointer]) | |
f9419b05 | 12468 | ++input_line_pointer; |
252b5132 RH |
12469 | ch = *input_line_pointer; |
12470 | *input_line_pointer = '\0'; | |
12471 | ||
12472 | if (strcmp (name, "reorder") == 0) | |
12473 | { | |
12474 | if (mips_opts.noreorder && prev_nop_frag != NULL) | |
12475 | { | |
12476 | /* If we still have pending nops, we can discard them. The | |
12477 | usual nop handling will insert any that are still | |
bdaaa2e1 | 12478 | needed. */ |
252b5132 RH |
12479 | prev_nop_frag->fr_fix -= (prev_nop_frag_holds |
12480 | * (mips_opts.mips16 ? 2 : 4)); | |
12481 | prev_nop_frag = NULL; | |
12482 | } | |
12483 | mips_opts.noreorder = 0; | |
12484 | } | |
12485 | else if (strcmp (name, "noreorder") == 0) | |
12486 | { | |
b34976b6 | 12487 | mips_emit_delays (TRUE); |
252b5132 RH |
12488 | mips_opts.noreorder = 1; |
12489 | mips_any_noreorder = 1; | |
12490 | } | |
12491 | else if (strcmp (name, "at") == 0) | |
12492 | { | |
12493 | mips_opts.noat = 0; | |
12494 | } | |
12495 | else if (strcmp (name, "noat") == 0) | |
12496 | { | |
12497 | mips_opts.noat = 1; | |
12498 | } | |
12499 | else if (strcmp (name, "macro") == 0) | |
12500 | { | |
12501 | mips_opts.warn_about_macros = 0; | |
12502 | } | |
12503 | else if (strcmp (name, "nomacro") == 0) | |
12504 | { | |
12505 | if (mips_opts.noreorder == 0) | |
12506 | as_bad (_("`noreorder' must be set before `nomacro'")); | |
12507 | mips_opts.warn_about_macros = 1; | |
12508 | } | |
12509 | else if (strcmp (name, "move") == 0 || strcmp (name, "novolatile") == 0) | |
12510 | { | |
12511 | mips_opts.nomove = 0; | |
12512 | } | |
12513 | else if (strcmp (name, "nomove") == 0 || strcmp (name, "volatile") == 0) | |
12514 | { | |
12515 | mips_opts.nomove = 1; | |
12516 | } | |
12517 | else if (strcmp (name, "bopt") == 0) | |
12518 | { | |
12519 | mips_opts.nobopt = 0; | |
12520 | } | |
12521 | else if (strcmp (name, "nobopt") == 0) | |
12522 | { | |
12523 | mips_opts.nobopt = 1; | |
12524 | } | |
12525 | else if (strcmp (name, "mips16") == 0 | |
12526 | || strcmp (name, "MIPS-16") == 0) | |
12527 | mips_opts.mips16 = 1; | |
12528 | else if (strcmp (name, "nomips16") == 0 | |
12529 | || strcmp (name, "noMIPS-16") == 0) | |
12530 | mips_opts.mips16 = 0; | |
1f25f5d3 CD |
12531 | else if (strcmp (name, "mips3d") == 0) |
12532 | mips_opts.ase_mips3d = 1; | |
12533 | else if (strcmp (name, "nomips3d") == 0) | |
12534 | mips_opts.ase_mips3d = 0; | |
a4672219 TS |
12535 | else if (strcmp (name, "mdmx") == 0) |
12536 | mips_opts.ase_mdmx = 1; | |
12537 | else if (strcmp (name, "nomdmx") == 0) | |
12538 | mips_opts.ase_mdmx = 0; | |
252b5132 RH |
12539 | else if (strncmp (name, "mips", 4) == 0) |
12540 | { | |
af7ee8bf | 12541 | int reset = 0; |
252b5132 RH |
12542 | |
12543 | /* Permit the user to change the ISA on the fly. Needless to | |
12544 | say, misuse can cause serious problems. */ | |
af7ee8bf CD |
12545 | if (strcmp (name, "mips0") == 0) |
12546 | { | |
12547 | reset = 1; | |
12548 | mips_opts.isa = file_mips_isa; | |
12549 | } | |
12550 | else if (strcmp (name, "mips1") == 0) | |
12551 | mips_opts.isa = ISA_MIPS1; | |
12552 | else if (strcmp (name, "mips2") == 0) | |
12553 | mips_opts.isa = ISA_MIPS2; | |
12554 | else if (strcmp (name, "mips3") == 0) | |
12555 | mips_opts.isa = ISA_MIPS3; | |
12556 | else if (strcmp (name, "mips4") == 0) | |
12557 | mips_opts.isa = ISA_MIPS4; | |
12558 | else if (strcmp (name, "mips5") == 0) | |
12559 | mips_opts.isa = ISA_MIPS5; | |
12560 | else if (strcmp (name, "mips32") == 0) | |
12561 | mips_opts.isa = ISA_MIPS32; | |
12562 | else if (strcmp (name, "mips32r2") == 0) | |
12563 | mips_opts.isa = ISA_MIPS32R2; | |
12564 | else if (strcmp (name, "mips64") == 0) | |
12565 | mips_opts.isa = ISA_MIPS64; | |
12566 | else | |
12567 | as_bad (_("unknown ISA level %s"), name + 4); | |
12568 | ||
12569 | switch (mips_opts.isa) | |
98d3f06f KH |
12570 | { |
12571 | case 0: | |
98d3f06f | 12572 | break; |
af7ee8bf CD |
12573 | case ISA_MIPS1: |
12574 | case ISA_MIPS2: | |
12575 | case ISA_MIPS32: | |
12576 | case ISA_MIPS32R2: | |
98d3f06f KH |
12577 | mips_opts.gp32 = 1; |
12578 | mips_opts.fp32 = 1; | |
12579 | break; | |
af7ee8bf CD |
12580 | case ISA_MIPS3: |
12581 | case ISA_MIPS4: | |
12582 | case ISA_MIPS5: | |
12583 | case ISA_MIPS64: | |
98d3f06f KH |
12584 | mips_opts.gp32 = 0; |
12585 | mips_opts.fp32 = 0; | |
12586 | break; | |
12587 | default: | |
12588 | as_bad (_("unknown ISA level %s"), name + 4); | |
12589 | break; | |
12590 | } | |
af7ee8bf | 12591 | if (reset) |
98d3f06f | 12592 | { |
af7ee8bf CD |
12593 | mips_opts.gp32 = file_mips_gp32; |
12594 | mips_opts.fp32 = file_mips_fp32; | |
98d3f06f | 12595 | } |
252b5132 RH |
12596 | } |
12597 | else if (strcmp (name, "autoextend") == 0) | |
12598 | mips_opts.noautoextend = 0; | |
12599 | else if (strcmp (name, "noautoextend") == 0) | |
12600 | mips_opts.noautoextend = 1; | |
12601 | else if (strcmp (name, "push") == 0) | |
12602 | { | |
12603 | struct mips_option_stack *s; | |
12604 | ||
12605 | s = (struct mips_option_stack *) xmalloc (sizeof *s); | |
12606 | s->next = mips_opts_stack; | |
12607 | s->options = mips_opts; | |
12608 | mips_opts_stack = s; | |
12609 | } | |
12610 | else if (strcmp (name, "pop") == 0) | |
12611 | { | |
12612 | struct mips_option_stack *s; | |
12613 | ||
12614 | s = mips_opts_stack; | |
12615 | if (s == NULL) | |
12616 | as_bad (_(".set pop with no .set push")); | |
12617 | else | |
12618 | { | |
12619 | /* If we're changing the reorder mode we need to handle | |
12620 | delay slots correctly. */ | |
12621 | if (s->options.noreorder && ! mips_opts.noreorder) | |
b34976b6 | 12622 | mips_emit_delays (TRUE); |
252b5132 RH |
12623 | else if (! s->options.noreorder && mips_opts.noreorder) |
12624 | { | |
12625 | if (prev_nop_frag != NULL) | |
12626 | { | |
12627 | prev_nop_frag->fr_fix -= (prev_nop_frag_holds | |
12628 | * (mips_opts.mips16 ? 2 : 4)); | |
12629 | prev_nop_frag = NULL; | |
12630 | } | |
12631 | } | |
12632 | ||
12633 | mips_opts = s->options; | |
12634 | mips_opts_stack = s->next; | |
12635 | free (s); | |
12636 | } | |
12637 | } | |
12638 | else | |
12639 | { | |
12640 | as_warn (_("Tried to set unrecognized symbol: %s\n"), name); | |
12641 | } | |
12642 | *input_line_pointer = ch; | |
12643 | demand_empty_rest_of_line (); | |
12644 | } | |
12645 | ||
12646 | /* Handle the .abicalls pseudo-op. I believe this is equivalent to | |
12647 | .option pic2. It means to generate SVR4 PIC calls. */ | |
12648 | ||
12649 | static void | |
12650 | s_abicalls (ignore) | |
43841e91 | 12651 | int ignore ATTRIBUTE_UNUSED; |
252b5132 RH |
12652 | { |
12653 | mips_pic = SVR4_PIC; | |
12654 | if (USE_GLOBAL_POINTER_OPT) | |
12655 | { | |
12656 | if (g_switch_seen && g_switch_value != 0) | |
12657 | as_warn (_("-G may not be used with SVR4 PIC code")); | |
12658 | g_switch_value = 0; | |
12659 | } | |
12660 | bfd_set_gp_size (stdoutput, 0); | |
12661 | demand_empty_rest_of_line (); | |
12662 | } | |
12663 | ||
12664 | /* Handle the .cpload pseudo-op. This is used when generating SVR4 | |
12665 | PIC code. It sets the $gp register for the function based on the | |
12666 | function address, which is in the register named in the argument. | |
12667 | This uses a relocation against _gp_disp, which is handled specially | |
12668 | by the linker. The result is: | |
12669 | lui $gp,%hi(_gp_disp) | |
12670 | addiu $gp,$gp,%lo(_gp_disp) | |
12671 | addu $gp,$gp,.cpload argument | |
12672 | The .cpload argument is normally $25 == $t9. */ | |
12673 | ||
12674 | static void | |
12675 | s_cpload (ignore) | |
43841e91 | 12676 | int ignore ATTRIBUTE_UNUSED; |
252b5132 RH |
12677 | { |
12678 | expressionS ex; | |
12679 | int icnt = 0; | |
12680 | ||
6478892d TS |
12681 | /* If we are not generating SVR4 PIC code, or if this is NewABI code, |
12682 | .cpload is ignored. */ | |
12683 | if (mips_pic != SVR4_PIC || HAVE_NEWABI) | |
252b5132 RH |
12684 | { |
12685 | s_ignore (0); | |
12686 | return; | |
12687 | } | |
12688 | ||
d3ecfc59 | 12689 | /* .cpload should be in a .set noreorder section. */ |
252b5132 RH |
12690 | if (mips_opts.noreorder == 0) |
12691 | as_warn (_(".cpload not in noreorder section")); | |
12692 | ||
12693 | ex.X_op = O_symbol; | |
12694 | ex.X_add_symbol = symbol_find_or_make ("_gp_disp"); | |
12695 | ex.X_op_symbol = NULL; | |
12696 | ex.X_add_number = 0; | |
12697 | ||
12698 | /* In ELF, this symbol is implicitly an STT_OBJECT symbol. */ | |
49309057 | 12699 | symbol_get_bfdsym (ex.X_add_symbol)->flags |= BSF_OBJECT; |
252b5132 | 12700 | |
c9914766 TS |
12701 | macro_build_lui (NULL, &icnt, &ex, mips_gp_register); |
12702 | macro_build ((char *) NULL, &icnt, &ex, "addiu", "t,r,j", | |
12703 | mips_gp_register, mips_gp_register, (int) BFD_RELOC_LO16); | |
252b5132 RH |
12704 | |
12705 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "addu", "d,v,t", | |
c9914766 | 12706 | mips_gp_register, mips_gp_register, tc_get_register (0)); |
252b5132 RH |
12707 | |
12708 | demand_empty_rest_of_line (); | |
12709 | } | |
12710 | ||
6478892d TS |
12711 | /* Handle the .cpsetup pseudo-op defined for NewABI PIC code. The syntax is: |
12712 | .cpsetup $reg1, offset|$reg2, label | |
12713 | ||
12714 | If offset is given, this results in: | |
12715 | sd $gp, offset($sp) | |
956cd1d6 | 12716 | lui $gp, %hi(%neg(%gp_rel(label))) |
698b7d9d TS |
12717 | addiu $gp, $gp, %lo(%neg(%gp_rel(label))) |
12718 | daddu $gp, $gp, $reg1 | |
6478892d TS |
12719 | |
12720 | If $reg2 is given, this results in: | |
12721 | daddu $reg2, $gp, $0 | |
956cd1d6 | 12722 | lui $gp, %hi(%neg(%gp_rel(label))) |
698b7d9d TS |
12723 | addiu $gp, $gp, %lo(%neg(%gp_rel(label))) |
12724 | daddu $gp, $gp, $reg1 | |
12725 | $reg1 is normally $25 == $t9. */ | |
6478892d TS |
12726 | static void |
12727 | s_cpsetup (ignore) | |
12728 | int ignore ATTRIBUTE_UNUSED; | |
12729 | { | |
12730 | expressionS ex_off; | |
12731 | expressionS ex_sym; | |
12732 | int reg1; | |
12733 | int icnt = 0; | |
f21f8242 | 12734 | char *f; |
6478892d | 12735 | |
8586fc66 | 12736 | /* If we are not generating SVR4 PIC code, .cpsetup is ignored. |
6478892d TS |
12737 | We also need NewABI support. */ |
12738 | if (mips_pic != SVR4_PIC || ! HAVE_NEWABI) | |
12739 | { | |
12740 | s_ignore (0); | |
12741 | return; | |
12742 | } | |
12743 | ||
12744 | reg1 = tc_get_register (0); | |
12745 | SKIP_WHITESPACE (); | |
12746 | if (*input_line_pointer != ',') | |
12747 | { | |
12748 | as_bad (_("missing argument separator ',' for .cpsetup")); | |
12749 | return; | |
12750 | } | |
12751 | else | |
80245285 | 12752 | ++input_line_pointer; |
6478892d TS |
12753 | SKIP_WHITESPACE (); |
12754 | if (*input_line_pointer == '$') | |
80245285 TS |
12755 | { |
12756 | mips_cpreturn_register = tc_get_register (0); | |
12757 | mips_cpreturn_offset = -1; | |
12758 | } | |
6478892d | 12759 | else |
80245285 TS |
12760 | { |
12761 | mips_cpreturn_offset = get_absolute_expression (); | |
12762 | mips_cpreturn_register = -1; | |
12763 | } | |
6478892d TS |
12764 | SKIP_WHITESPACE (); |
12765 | if (*input_line_pointer != ',') | |
12766 | { | |
12767 | as_bad (_("missing argument separator ',' for .cpsetup")); | |
12768 | return; | |
12769 | } | |
12770 | else | |
f9419b05 | 12771 | ++input_line_pointer; |
6478892d | 12772 | SKIP_WHITESPACE (); |
f21f8242 | 12773 | expression (&ex_sym); |
6478892d TS |
12774 | |
12775 | if (mips_cpreturn_register == -1) | |
12776 | { | |
12777 | ex_off.X_op = O_constant; | |
12778 | ex_off.X_add_symbol = NULL; | |
12779 | ex_off.X_op_symbol = NULL; | |
12780 | ex_off.X_add_number = mips_cpreturn_offset; | |
12781 | ||
12782 | macro_build ((char *) NULL, &icnt, &ex_off, "sd", "t,o(b)", | |
12783 | mips_gp_register, (int) BFD_RELOC_LO16, SP); | |
12784 | } | |
12785 | else | |
12786 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "daddu", | |
12787 | "d,v,t", mips_cpreturn_register, mips_gp_register, 0); | |
12788 | ||
f21f8242 AO |
12789 | /* Ensure there's room for the next two instructions, so that `f' |
12790 | doesn't end up with an address in the wrong frag. */ | |
12791 | frag_grow (8); | |
12792 | f = frag_more (0); | |
6478892d TS |
12793 | macro_build ((char *) NULL, &icnt, &ex_sym, "lui", "t,u", mips_gp_register, |
12794 | (int) BFD_RELOC_GPREL16); | |
f21f8242 AO |
12795 | fix_new (frag_now, f - frag_now->fr_literal, |
12796 | 0, NULL, 0, 0, BFD_RELOC_MIPS_SUB); | |
12797 | fix_new (frag_now, f - frag_now->fr_literal, | |
12798 | 0, NULL, 0, 0, BFD_RELOC_HI16_S); | |
12799 | ||
12800 | f = frag_more (0); | |
6478892d TS |
12801 | macro_build ((char *) NULL, &icnt, &ex_sym, "addiu", "t,r,j", |
12802 | mips_gp_register, mips_gp_register, (int) BFD_RELOC_GPREL16); | |
f21f8242 AO |
12803 | fix_new (frag_now, f - frag_now->fr_literal, |
12804 | 0, NULL, 0, 0, BFD_RELOC_MIPS_SUB); | |
12805 | fix_new (frag_now, f - frag_now->fr_literal, | |
12806 | 0, NULL, 0, 0, BFD_RELOC_LO16); | |
12807 | ||
8586fc66 | 12808 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, |
f5040a92 | 12809 | HAVE_64BIT_ADDRESSES ? "daddu" : "add", "d,v,t", |
8586fc66 | 12810 | mips_gp_register, mips_gp_register, reg1); |
6478892d TS |
12811 | |
12812 | demand_empty_rest_of_line (); | |
12813 | } | |
12814 | ||
12815 | static void | |
12816 | s_cplocal (ignore) | |
12817 | int ignore ATTRIBUTE_UNUSED; | |
12818 | { | |
12819 | /* If we are not generating SVR4 PIC code, or if this is not NewABI code, | |
12820 | .cplocal is ignored. */ | |
12821 | if (mips_pic != SVR4_PIC || ! HAVE_NEWABI) | |
12822 | { | |
12823 | s_ignore (0); | |
12824 | return; | |
12825 | } | |
12826 | ||
12827 | mips_gp_register = tc_get_register (0); | |
85b51719 | 12828 | demand_empty_rest_of_line (); |
6478892d TS |
12829 | } |
12830 | ||
252b5132 RH |
12831 | /* Handle the .cprestore pseudo-op. This stores $gp into a given |
12832 | offset from $sp. The offset is remembered, and after making a PIC | |
12833 | call $gp is restored from that location. */ | |
12834 | ||
12835 | static void | |
12836 | s_cprestore (ignore) | |
43841e91 | 12837 | int ignore ATTRIBUTE_UNUSED; |
252b5132 RH |
12838 | { |
12839 | expressionS ex; | |
12840 | int icnt = 0; | |
12841 | ||
6478892d | 12842 | /* If we are not generating SVR4 PIC code, or if this is NewABI code, |
c9914766 | 12843 | .cprestore is ignored. */ |
6478892d | 12844 | if (mips_pic != SVR4_PIC || HAVE_NEWABI) |
252b5132 RH |
12845 | { |
12846 | s_ignore (0); | |
12847 | return; | |
12848 | } | |
12849 | ||
12850 | mips_cprestore_offset = get_absolute_expression (); | |
7a621144 | 12851 | mips_cprestore_valid = 1; |
252b5132 RH |
12852 | |
12853 | ex.X_op = O_constant; | |
12854 | ex.X_add_symbol = NULL; | |
12855 | ex.X_op_symbol = NULL; | |
12856 | ex.X_add_number = mips_cprestore_offset; | |
12857 | ||
885add95 CD |
12858 | macro_build_ldst_constoffset ((char *) NULL, &icnt, &ex, |
12859 | HAVE_32BIT_ADDRESSES ? "sw" : "sd", | |
12860 | mips_gp_register, SP); | |
252b5132 RH |
12861 | |
12862 | demand_empty_rest_of_line (); | |
12863 | } | |
12864 | ||
6478892d TS |
12865 | /* Handle the .cpreturn pseudo-op defined for NewABI PIC code. If an offset |
12866 | was given in the preceeding .gpsetup, it results in: | |
12867 | ld $gp, offset($sp) | |
76b3015f | 12868 | |
6478892d TS |
12869 | If a register $reg2 was given there, it results in: |
12870 | daddiu $gp, $gp, $reg2 | |
12871 | */ | |
12872 | static void | |
12873 | s_cpreturn (ignore) | |
12874 | int ignore ATTRIBUTE_UNUSED; | |
12875 | { | |
12876 | expressionS ex; | |
12877 | int icnt = 0; | |
12878 | ||
12879 | /* If we are not generating SVR4 PIC code, .cpreturn is ignored. | |
12880 | We also need NewABI support. */ | |
12881 | if (mips_pic != SVR4_PIC || ! HAVE_NEWABI) | |
12882 | { | |
12883 | s_ignore (0); | |
12884 | return; | |
12885 | } | |
12886 | ||
12887 | if (mips_cpreturn_register == -1) | |
12888 | { | |
12889 | ex.X_op = O_constant; | |
12890 | ex.X_add_symbol = NULL; | |
12891 | ex.X_op_symbol = NULL; | |
12892 | ex.X_add_number = mips_cpreturn_offset; | |
12893 | ||
12894 | macro_build ((char *) NULL, &icnt, &ex, "ld", "t,o(b)", | |
12895 | mips_gp_register, (int) BFD_RELOC_LO16, SP); | |
12896 | } | |
12897 | else | |
12898 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "daddu", | |
12899 | "d,v,t", mips_gp_register, mips_cpreturn_register, 0); | |
12900 | ||
12901 | demand_empty_rest_of_line (); | |
12902 | } | |
12903 | ||
12904 | /* Handle the .gpvalue pseudo-op. This is used when generating NewABI PIC | |
12905 | code. It sets the offset to use in gp_rel relocations. */ | |
12906 | ||
12907 | static void | |
12908 | s_gpvalue (ignore) | |
12909 | int ignore ATTRIBUTE_UNUSED; | |
12910 | { | |
12911 | /* If we are not generating SVR4 PIC code, .gpvalue is ignored. | |
12912 | We also need NewABI support. */ | |
12913 | if (mips_pic != SVR4_PIC || ! HAVE_NEWABI) | |
12914 | { | |
12915 | s_ignore (0); | |
12916 | return; | |
12917 | } | |
12918 | ||
def2e0dd | 12919 | mips_gprel_offset = get_absolute_expression (); |
6478892d TS |
12920 | |
12921 | demand_empty_rest_of_line (); | |
12922 | } | |
12923 | ||
252b5132 RH |
12924 | /* Handle the .gpword pseudo-op. This is used when generating PIC |
12925 | code. It generates a 32 bit GP relative reloc. */ | |
12926 | ||
12927 | static void | |
12928 | s_gpword (ignore) | |
43841e91 | 12929 | int ignore ATTRIBUTE_UNUSED; |
252b5132 RH |
12930 | { |
12931 | symbolS *label; | |
12932 | expressionS ex; | |
12933 | char *p; | |
12934 | ||
12935 | /* When not generating PIC code, this is treated as .word. */ | |
12936 | if (mips_pic != SVR4_PIC) | |
12937 | { | |
12938 | s_cons (2); | |
12939 | return; | |
12940 | } | |
12941 | ||
12942 | label = insn_labels != NULL ? insn_labels->label : NULL; | |
b34976b6 | 12943 | mips_emit_delays (TRUE); |
252b5132 RH |
12944 | if (auto_align) |
12945 | mips_align (2, 0, label); | |
12946 | mips_clear_insn_labels (); | |
12947 | ||
12948 | expression (&ex); | |
12949 | ||
12950 | if (ex.X_op != O_symbol || ex.X_add_number != 0) | |
12951 | { | |
12952 | as_bad (_("Unsupported use of .gpword")); | |
12953 | ignore_rest_of_line (); | |
12954 | } | |
12955 | ||
12956 | p = frag_more (4); | |
12957 | md_number_to_chars (p, (valueT) 0, 4); | |
b34976b6 | 12958 | fix_new_exp (frag_now, p - frag_now->fr_literal, 4, &ex, FALSE, |
cdf6fd85 | 12959 | BFD_RELOC_GPREL32); |
252b5132 RH |
12960 | |
12961 | demand_empty_rest_of_line (); | |
12962 | } | |
12963 | ||
10181a0d AO |
12964 | static void |
12965 | s_gpdword (ignore) | |
12966 | int ignore ATTRIBUTE_UNUSED; | |
12967 | { | |
12968 | symbolS *label; | |
12969 | expressionS ex; | |
12970 | char *p; | |
12971 | ||
12972 | /* When not generating PIC code, this is treated as .dword. */ | |
12973 | if (mips_pic != SVR4_PIC) | |
12974 | { | |
12975 | s_cons (3); | |
12976 | return; | |
12977 | } | |
12978 | ||
12979 | label = insn_labels != NULL ? insn_labels->label : NULL; | |
b34976b6 | 12980 | mips_emit_delays (TRUE); |
10181a0d AO |
12981 | if (auto_align) |
12982 | mips_align (3, 0, label); | |
12983 | mips_clear_insn_labels (); | |
12984 | ||
12985 | expression (&ex); | |
12986 | ||
12987 | if (ex.X_op != O_symbol || ex.X_add_number != 0) | |
12988 | { | |
12989 | as_bad (_("Unsupported use of .gpdword")); | |
12990 | ignore_rest_of_line (); | |
12991 | } | |
12992 | ||
12993 | p = frag_more (8); | |
12994 | md_number_to_chars (p, (valueT) 0, 8); | |
b34976b6 | 12995 | fix_new_exp (frag_now, p - frag_now->fr_literal, 8, &ex, FALSE, |
10181a0d AO |
12996 | BFD_RELOC_GPREL32); |
12997 | ||
12998 | /* GPREL32 composed with 64 gives a 64-bit GP offset. */ | |
12999 | ex.X_op = O_absent; | |
13000 | ex.X_add_symbol = 0; | |
13001 | ex.X_add_number = 0; | |
b34976b6 | 13002 | fix_new_exp (frag_now, p - frag_now->fr_literal, 8, &ex, FALSE, |
10181a0d AO |
13003 | BFD_RELOC_64); |
13004 | ||
13005 | demand_empty_rest_of_line (); | |
13006 | } | |
13007 | ||
252b5132 RH |
13008 | /* Handle the .cpadd pseudo-op. This is used when dealing with switch |
13009 | tables in SVR4 PIC code. */ | |
13010 | ||
13011 | static void | |
13012 | s_cpadd (ignore) | |
43841e91 | 13013 | int ignore ATTRIBUTE_UNUSED; |
252b5132 RH |
13014 | { |
13015 | int icnt = 0; | |
13016 | int reg; | |
13017 | ||
10181a0d AO |
13018 | /* This is ignored when not generating SVR4 PIC code. */ |
13019 | if (mips_pic != SVR4_PIC) | |
252b5132 RH |
13020 | { |
13021 | s_ignore (0); | |
13022 | return; | |
13023 | } | |
13024 | ||
13025 | /* Add $gp to the register named as an argument. */ | |
13026 | reg = tc_get_register (0); | |
13027 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, | |
f5040a92 | 13028 | HAVE_32BIT_ADDRESSES ? HAVE_NEWABI ? "add" : "addu" : "daddu", |
c9914766 | 13029 | "d,v,t", reg, reg, mips_gp_register); |
252b5132 | 13030 | |
bdaaa2e1 | 13031 | demand_empty_rest_of_line (); |
252b5132 RH |
13032 | } |
13033 | ||
13034 | /* Handle the .insn pseudo-op. This marks instruction labels in | |
13035 | mips16 mode. This permits the linker to handle them specially, | |
13036 | such as generating jalx instructions when needed. We also make | |
13037 | them odd for the duration of the assembly, in order to generate the | |
13038 | right sort of code. We will make them even in the adjust_symtab | |
13039 | routine, while leaving them marked. This is convenient for the | |
13040 | debugger and the disassembler. The linker knows to make them odd | |
13041 | again. */ | |
13042 | ||
13043 | static void | |
13044 | s_insn (ignore) | |
43841e91 | 13045 | int ignore ATTRIBUTE_UNUSED; |
252b5132 | 13046 | { |
f9419b05 | 13047 | mips16_mark_labels (); |
252b5132 RH |
13048 | |
13049 | demand_empty_rest_of_line (); | |
13050 | } | |
13051 | ||
13052 | /* Handle a .stabn directive. We need these in order to mark a label | |
13053 | as being a mips16 text label correctly. Sometimes the compiler | |
13054 | will emit a label, followed by a .stabn, and then switch sections. | |
13055 | If the label and .stabn are in mips16 mode, then the label is | |
13056 | really a mips16 text label. */ | |
13057 | ||
13058 | static void | |
13059 | s_mips_stab (type) | |
13060 | int type; | |
13061 | { | |
f9419b05 | 13062 | if (type == 'n') |
252b5132 RH |
13063 | mips16_mark_labels (); |
13064 | ||
13065 | s_stab (type); | |
13066 | } | |
13067 | ||
13068 | /* Handle the .weakext pseudo-op as defined in Kane and Heinrich. | |
13069 | */ | |
13070 | ||
13071 | static void | |
13072 | s_mips_weakext (ignore) | |
43841e91 | 13073 | int ignore ATTRIBUTE_UNUSED; |
252b5132 RH |
13074 | { |
13075 | char *name; | |
13076 | int c; | |
13077 | symbolS *symbolP; | |
13078 | expressionS exp; | |
13079 | ||
13080 | name = input_line_pointer; | |
13081 | c = get_symbol_end (); | |
13082 | symbolP = symbol_find_or_make (name); | |
13083 | S_SET_WEAK (symbolP); | |
13084 | *input_line_pointer = c; | |
13085 | ||
13086 | SKIP_WHITESPACE (); | |
13087 | ||
13088 | if (! is_end_of_line[(unsigned char) *input_line_pointer]) | |
13089 | { | |
13090 | if (S_IS_DEFINED (symbolP)) | |
13091 | { | |
956cd1d6 | 13092 | as_bad ("ignoring attempt to redefine symbol %s", |
252b5132 RH |
13093 | S_GET_NAME (symbolP)); |
13094 | ignore_rest_of_line (); | |
13095 | return; | |
13096 | } | |
bdaaa2e1 | 13097 | |
252b5132 RH |
13098 | if (*input_line_pointer == ',') |
13099 | { | |
13100 | ++input_line_pointer; | |
13101 | SKIP_WHITESPACE (); | |
13102 | } | |
bdaaa2e1 | 13103 | |
252b5132 RH |
13104 | expression (&exp); |
13105 | if (exp.X_op != O_symbol) | |
13106 | { | |
13107 | as_bad ("bad .weakext directive"); | |
98d3f06f | 13108 | ignore_rest_of_line (); |
252b5132 RH |
13109 | return; |
13110 | } | |
49309057 | 13111 | symbol_set_value_expression (symbolP, &exp); |
252b5132 RH |
13112 | } |
13113 | ||
13114 | demand_empty_rest_of_line (); | |
13115 | } | |
13116 | ||
13117 | /* Parse a register string into a number. Called from the ECOFF code | |
13118 | to parse .frame. The argument is non-zero if this is the frame | |
13119 | register, so that we can record it in mips_frame_reg. */ | |
13120 | ||
13121 | int | |
13122 | tc_get_register (frame) | |
13123 | int frame; | |
13124 | { | |
13125 | int reg; | |
13126 | ||
13127 | SKIP_WHITESPACE (); | |
13128 | if (*input_line_pointer++ != '$') | |
13129 | { | |
13130 | as_warn (_("expected `$'")); | |
85b51719 | 13131 | reg = ZERO; |
252b5132 | 13132 | } |
3882b010 | 13133 | else if (ISDIGIT (*input_line_pointer)) |
252b5132 RH |
13134 | { |
13135 | reg = get_absolute_expression (); | |
13136 | if (reg < 0 || reg >= 32) | |
13137 | { | |
13138 | as_warn (_("Bad register number")); | |
85b51719 | 13139 | reg = ZERO; |
252b5132 RH |
13140 | } |
13141 | } | |
13142 | else | |
13143 | { | |
76db943d | 13144 | if (strncmp (input_line_pointer, "ra", 2) == 0) |
85b51719 TS |
13145 | { |
13146 | reg = RA; | |
13147 | input_line_pointer += 2; | |
13148 | } | |
76db943d | 13149 | else if (strncmp (input_line_pointer, "fp", 2) == 0) |
85b51719 TS |
13150 | { |
13151 | reg = FP; | |
13152 | input_line_pointer += 2; | |
13153 | } | |
252b5132 | 13154 | else if (strncmp (input_line_pointer, "sp", 2) == 0) |
85b51719 TS |
13155 | { |
13156 | reg = SP; | |
13157 | input_line_pointer += 2; | |
13158 | } | |
252b5132 | 13159 | else if (strncmp (input_line_pointer, "gp", 2) == 0) |
85b51719 TS |
13160 | { |
13161 | reg = GP; | |
13162 | input_line_pointer += 2; | |
13163 | } | |
252b5132 | 13164 | else if (strncmp (input_line_pointer, "at", 2) == 0) |
85b51719 TS |
13165 | { |
13166 | reg = AT; | |
13167 | input_line_pointer += 2; | |
13168 | } | |
13169 | else if (strncmp (input_line_pointer, "kt0", 3) == 0) | |
13170 | { | |
13171 | reg = KT0; | |
13172 | input_line_pointer += 3; | |
13173 | } | |
13174 | else if (strncmp (input_line_pointer, "kt1", 3) == 0) | |
13175 | { | |
13176 | reg = KT1; | |
13177 | input_line_pointer += 3; | |
13178 | } | |
13179 | else if (strncmp (input_line_pointer, "zero", 4) == 0) | |
13180 | { | |
13181 | reg = ZERO; | |
13182 | input_line_pointer += 4; | |
13183 | } | |
252b5132 RH |
13184 | else |
13185 | { | |
13186 | as_warn (_("Unrecognized register name")); | |
85b51719 TS |
13187 | reg = ZERO; |
13188 | while (ISALNUM(*input_line_pointer)) | |
13189 | input_line_pointer++; | |
252b5132 | 13190 | } |
252b5132 RH |
13191 | } |
13192 | if (frame) | |
7a621144 DJ |
13193 | { |
13194 | mips_frame_reg = reg != 0 ? reg : SP; | |
13195 | mips_frame_reg_valid = 1; | |
13196 | mips_cprestore_valid = 0; | |
13197 | } | |
252b5132 RH |
13198 | return reg; |
13199 | } | |
13200 | ||
13201 | valueT | |
13202 | md_section_align (seg, addr) | |
13203 | asection *seg; | |
13204 | valueT addr; | |
13205 | { | |
13206 | int align = bfd_get_section_alignment (stdoutput, seg); | |
13207 | ||
13208 | #ifdef OBJ_ELF | |
13209 | /* We don't need to align ELF sections to the full alignment. | |
13210 | However, Irix 5 may prefer that we align them at least to a 16 | |
13211 | byte boundary. We don't bother to align the sections if we are | |
13212 | targeted for an embedded system. */ | |
13213 | if (strcmp (TARGET_OS, "elf") == 0) | |
13214 | return addr; | |
13215 | if (align > 4) | |
13216 | align = 4; | |
13217 | #endif | |
13218 | ||
13219 | return ((addr + (1 << align) - 1) & (-1 << align)); | |
13220 | } | |
13221 | ||
13222 | /* Utility routine, called from above as well. If called while the | |
13223 | input file is still being read, it's only an approximation. (For | |
13224 | example, a symbol may later become defined which appeared to be | |
13225 | undefined earlier.) */ | |
13226 | ||
13227 | static int | |
13228 | nopic_need_relax (sym, before_relaxing) | |
13229 | symbolS *sym; | |
13230 | int before_relaxing; | |
13231 | { | |
13232 | if (sym == 0) | |
13233 | return 0; | |
13234 | ||
6478892d | 13235 | if (USE_GLOBAL_POINTER_OPT && g_switch_value > 0) |
252b5132 RH |
13236 | { |
13237 | const char *symname; | |
13238 | int change; | |
13239 | ||
c9914766 | 13240 | /* Find out whether this symbol can be referenced off the $gp |
252b5132 RH |
13241 | register. It can be if it is smaller than the -G size or if |
13242 | it is in the .sdata or .sbss section. Certain symbols can | |
c9914766 | 13243 | not be referenced off the $gp, although it appears as though |
252b5132 RH |
13244 | they can. */ |
13245 | symname = S_GET_NAME (sym); | |
13246 | if (symname != (const char *) NULL | |
13247 | && (strcmp (symname, "eprol") == 0 | |
13248 | || strcmp (symname, "etext") == 0 | |
13249 | || strcmp (symname, "_gp") == 0 | |
13250 | || strcmp (symname, "edata") == 0 | |
13251 | || strcmp (symname, "_fbss") == 0 | |
13252 | || strcmp (symname, "_fdata") == 0 | |
13253 | || strcmp (symname, "_ftext") == 0 | |
13254 | || strcmp (symname, "end") == 0 | |
13255 | || strcmp (symname, "_gp_disp") == 0)) | |
13256 | change = 1; | |
13257 | else if ((! S_IS_DEFINED (sym) || S_IS_COMMON (sym)) | |
13258 | && (0 | |
13259 | #ifndef NO_ECOFF_DEBUGGING | |
49309057 ILT |
13260 | || (symbol_get_obj (sym)->ecoff_extern_size != 0 |
13261 | && (symbol_get_obj (sym)->ecoff_extern_size | |
13262 | <= g_switch_value)) | |
252b5132 RH |
13263 | #endif |
13264 | /* We must defer this decision until after the whole | |
13265 | file has been read, since there might be a .extern | |
13266 | after the first use of this symbol. */ | |
13267 | || (before_relaxing | |
13268 | #ifndef NO_ECOFF_DEBUGGING | |
49309057 | 13269 | && symbol_get_obj (sym)->ecoff_extern_size == 0 |
252b5132 RH |
13270 | #endif |
13271 | && S_GET_VALUE (sym) == 0) | |
13272 | || (S_GET_VALUE (sym) != 0 | |
13273 | && S_GET_VALUE (sym) <= g_switch_value))) | |
13274 | change = 0; | |
13275 | else | |
13276 | { | |
13277 | const char *segname; | |
13278 | ||
13279 | segname = segment_name (S_GET_SEGMENT (sym)); | |
13280 | assert (strcmp (segname, ".lit8") != 0 | |
13281 | && strcmp (segname, ".lit4") != 0); | |
13282 | change = (strcmp (segname, ".sdata") != 0 | |
fba2b7f9 GK |
13283 | && strcmp (segname, ".sbss") != 0 |
13284 | && strncmp (segname, ".sdata.", 7) != 0 | |
13285 | && strncmp (segname, ".gnu.linkonce.s.", 16) != 0); | |
252b5132 RH |
13286 | } |
13287 | return change; | |
13288 | } | |
13289 | else | |
c9914766 | 13290 | /* We are not optimizing for the $gp register. */ |
252b5132 RH |
13291 | return 1; |
13292 | } | |
13293 | ||
5919d012 RS |
13294 | |
13295 | /* Return true if the given symbol should be considered local for SVR4 PIC. */ | |
13296 | ||
13297 | static bfd_boolean | |
13298 | pic_need_relax (sym, segtype) | |
13299 | symbolS *sym; | |
13300 | asection *segtype; | |
13301 | { | |
13302 | asection *symsec; | |
13303 | bfd_boolean linkonce; | |
13304 | ||
13305 | /* Handle the case of a symbol equated to another symbol. */ | |
13306 | while (symbol_equated_reloc_p (sym)) | |
13307 | { | |
13308 | symbolS *n; | |
13309 | ||
13310 | /* It's possible to get a loop here in a badly written | |
13311 | program. */ | |
13312 | n = symbol_get_value_expression (sym)->X_add_symbol; | |
13313 | if (n == sym) | |
13314 | break; | |
13315 | sym = n; | |
13316 | } | |
13317 | ||
13318 | symsec = S_GET_SEGMENT (sym); | |
13319 | ||
13320 | /* duplicate the test for LINK_ONCE sections as in adjust_reloc_syms */ | |
13321 | linkonce = FALSE; | |
13322 | if (symsec != segtype && ! S_IS_LOCAL (sym)) | |
13323 | { | |
13324 | if ((bfd_get_section_flags (stdoutput, symsec) & SEC_LINK_ONCE) | |
13325 | != 0) | |
13326 | linkonce = TRUE; | |
13327 | ||
13328 | /* The GNU toolchain uses an extension for ELF: a section | |
13329 | beginning with the magic string .gnu.linkonce is a linkonce | |
13330 | section. */ | |
13331 | if (strncmp (segment_name (symsec), ".gnu.linkonce", | |
13332 | sizeof ".gnu.linkonce" - 1) == 0) | |
13333 | linkonce = TRUE; | |
13334 | } | |
13335 | ||
13336 | /* This must duplicate the test in adjust_reloc_syms. */ | |
13337 | return (symsec != &bfd_und_section | |
13338 | && symsec != &bfd_abs_section | |
13339 | && ! bfd_is_com_section (symsec) | |
13340 | && !linkonce | |
13341 | #ifdef OBJ_ELF | |
13342 | /* A global or weak symbol is treated as external. */ | |
13343 | && (OUTPUT_FLAVOR != bfd_target_elf_flavour | |
13344 | || (! S_IS_WEAK (sym) | |
13345 | && (! S_IS_EXTERNAL (sym) | |
13346 | || mips_pic == EMBEDDED_PIC))) | |
13347 | #endif | |
13348 | ); | |
13349 | } | |
13350 | ||
13351 | ||
252b5132 RH |
13352 | /* Given a mips16 variant frag FRAGP, return non-zero if it needs an |
13353 | extended opcode. SEC is the section the frag is in. */ | |
13354 | ||
13355 | static int | |
13356 | mips16_extended_frag (fragp, sec, stretch) | |
13357 | fragS *fragp; | |
13358 | asection *sec; | |
13359 | long stretch; | |
13360 | { | |
13361 | int type; | |
13362 | register const struct mips16_immed_operand *op; | |
13363 | offsetT val; | |
13364 | int mintiny, maxtiny; | |
13365 | segT symsec; | |
98aa84af | 13366 | fragS *sym_frag; |
252b5132 RH |
13367 | |
13368 | if (RELAX_MIPS16_USER_SMALL (fragp->fr_subtype)) | |
13369 | return 0; | |
13370 | if (RELAX_MIPS16_USER_EXT (fragp->fr_subtype)) | |
13371 | return 1; | |
13372 | ||
13373 | type = RELAX_MIPS16_TYPE (fragp->fr_subtype); | |
13374 | op = mips16_immed_operands; | |
13375 | while (op->type != type) | |
13376 | { | |
13377 | ++op; | |
13378 | assert (op < mips16_immed_operands + MIPS16_NUM_IMMED); | |
13379 | } | |
13380 | ||
13381 | if (op->unsp) | |
13382 | { | |
13383 | if (type == '<' || type == '>' || type == '[' || type == ']') | |
13384 | { | |
13385 | mintiny = 1; | |
13386 | maxtiny = 1 << op->nbits; | |
13387 | } | |
13388 | else | |
13389 | { | |
13390 | mintiny = 0; | |
13391 | maxtiny = (1 << op->nbits) - 1; | |
13392 | } | |
13393 | } | |
13394 | else | |
13395 | { | |
13396 | mintiny = - (1 << (op->nbits - 1)); | |
13397 | maxtiny = (1 << (op->nbits - 1)) - 1; | |
13398 | } | |
13399 | ||
98aa84af | 13400 | sym_frag = symbol_get_frag (fragp->fr_symbol); |
ac62c346 | 13401 | val = S_GET_VALUE (fragp->fr_symbol); |
98aa84af | 13402 | symsec = S_GET_SEGMENT (fragp->fr_symbol); |
252b5132 RH |
13403 | |
13404 | if (op->pcrel) | |
13405 | { | |
13406 | addressT addr; | |
13407 | ||
13408 | /* We won't have the section when we are called from | |
13409 | mips_relax_frag. However, we will always have been called | |
13410 | from md_estimate_size_before_relax first. If this is a | |
13411 | branch to a different section, we mark it as such. If SEC is | |
13412 | NULL, and the frag is not marked, then it must be a branch to | |
13413 | the same section. */ | |
13414 | if (sec == NULL) | |
13415 | { | |
13416 | if (RELAX_MIPS16_LONG_BRANCH (fragp->fr_subtype)) | |
13417 | return 1; | |
13418 | } | |
13419 | else | |
13420 | { | |
98aa84af | 13421 | /* Must have been called from md_estimate_size_before_relax. */ |
252b5132 RH |
13422 | if (symsec != sec) |
13423 | { | |
13424 | fragp->fr_subtype = | |
13425 | RELAX_MIPS16_MARK_LONG_BRANCH (fragp->fr_subtype); | |
13426 | ||
13427 | /* FIXME: We should support this, and let the linker | |
13428 | catch branches and loads that are out of range. */ | |
13429 | as_bad_where (fragp->fr_file, fragp->fr_line, | |
13430 | _("unsupported PC relative reference to different section")); | |
13431 | ||
13432 | return 1; | |
13433 | } | |
98aa84af AM |
13434 | if (fragp != sym_frag && sym_frag->fr_address == 0) |
13435 | /* Assume non-extended on the first relaxation pass. | |
13436 | The address we have calculated will be bogus if this is | |
13437 | a forward branch to another frag, as the forward frag | |
13438 | will have fr_address == 0. */ | |
13439 | return 0; | |
252b5132 RH |
13440 | } |
13441 | ||
13442 | /* In this case, we know for sure that the symbol fragment is in | |
98aa84af AM |
13443 | the same section. If the relax_marker of the symbol fragment |
13444 | differs from the relax_marker of this fragment, we have not | |
13445 | yet adjusted the symbol fragment fr_address. We want to add | |
252b5132 RH |
13446 | in STRETCH in order to get a better estimate of the address. |
13447 | This particularly matters because of the shift bits. */ | |
13448 | if (stretch != 0 | |
98aa84af | 13449 | && sym_frag->relax_marker != fragp->relax_marker) |
252b5132 RH |
13450 | { |
13451 | fragS *f; | |
13452 | ||
13453 | /* Adjust stretch for any alignment frag. Note that if have | |
13454 | been expanding the earlier code, the symbol may be | |
13455 | defined in what appears to be an earlier frag. FIXME: | |
13456 | This doesn't handle the fr_subtype field, which specifies | |
13457 | a maximum number of bytes to skip when doing an | |
13458 | alignment. */ | |
98aa84af | 13459 | for (f = fragp; f != NULL && f != sym_frag; f = f->fr_next) |
252b5132 RH |
13460 | { |
13461 | if (f->fr_type == rs_align || f->fr_type == rs_align_code) | |
13462 | { | |
13463 | if (stretch < 0) | |
13464 | stretch = - ((- stretch) | |
13465 | & ~ ((1 << (int) f->fr_offset) - 1)); | |
13466 | else | |
13467 | stretch &= ~ ((1 << (int) f->fr_offset) - 1); | |
13468 | if (stretch == 0) | |
13469 | break; | |
13470 | } | |
13471 | } | |
13472 | if (f != NULL) | |
13473 | val += stretch; | |
13474 | } | |
13475 | ||
13476 | addr = fragp->fr_address + fragp->fr_fix; | |
13477 | ||
13478 | /* The base address rules are complicated. The base address of | |
13479 | a branch is the following instruction. The base address of a | |
13480 | PC relative load or add is the instruction itself, but if it | |
13481 | is in a delay slot (in which case it can not be extended) use | |
13482 | the address of the instruction whose delay slot it is in. */ | |
13483 | if (type == 'p' || type == 'q') | |
13484 | { | |
13485 | addr += 2; | |
13486 | ||
13487 | /* If we are currently assuming that this frag should be | |
13488 | extended, then, the current address is two bytes | |
bdaaa2e1 | 13489 | higher. */ |
252b5132 RH |
13490 | if (RELAX_MIPS16_EXTENDED (fragp->fr_subtype)) |
13491 | addr += 2; | |
13492 | ||
13493 | /* Ignore the low bit in the target, since it will be set | |
13494 | for a text label. */ | |
13495 | if ((val & 1) != 0) | |
13496 | --val; | |
13497 | } | |
13498 | else if (RELAX_MIPS16_JAL_DSLOT (fragp->fr_subtype)) | |
13499 | addr -= 4; | |
13500 | else if (RELAX_MIPS16_DSLOT (fragp->fr_subtype)) | |
13501 | addr -= 2; | |
13502 | ||
13503 | val -= addr & ~ ((1 << op->shift) - 1); | |
13504 | ||
13505 | /* Branch offsets have an implicit 0 in the lowest bit. */ | |
13506 | if (type == 'p' || type == 'q') | |
13507 | val /= 2; | |
13508 | ||
13509 | /* If any of the shifted bits are set, we must use an extended | |
13510 | opcode. If the address depends on the size of this | |
13511 | instruction, this can lead to a loop, so we arrange to always | |
13512 | use an extended opcode. We only check this when we are in | |
13513 | the main relaxation loop, when SEC is NULL. */ | |
13514 | if ((val & ((1 << op->shift) - 1)) != 0 && sec == NULL) | |
13515 | { | |
13516 | fragp->fr_subtype = | |
13517 | RELAX_MIPS16_MARK_LONG_BRANCH (fragp->fr_subtype); | |
13518 | return 1; | |
13519 | } | |
13520 | ||
13521 | /* If we are about to mark a frag as extended because the value | |
13522 | is precisely maxtiny + 1, then there is a chance of an | |
13523 | infinite loop as in the following code: | |
13524 | la $4,foo | |
13525 | .skip 1020 | |
13526 | .align 2 | |
13527 | foo: | |
13528 | In this case when the la is extended, foo is 0x3fc bytes | |
13529 | away, so the la can be shrunk, but then foo is 0x400 away, so | |
13530 | the la must be extended. To avoid this loop, we mark the | |
13531 | frag as extended if it was small, and is about to become | |
13532 | extended with a value of maxtiny + 1. */ | |
13533 | if (val == ((maxtiny + 1) << op->shift) | |
13534 | && ! RELAX_MIPS16_EXTENDED (fragp->fr_subtype) | |
13535 | && sec == NULL) | |
13536 | { | |
13537 | fragp->fr_subtype = | |
13538 | RELAX_MIPS16_MARK_LONG_BRANCH (fragp->fr_subtype); | |
13539 | return 1; | |
13540 | } | |
13541 | } | |
13542 | else if (symsec != absolute_section && sec != NULL) | |
13543 | as_bad_where (fragp->fr_file, fragp->fr_line, _("unsupported relocation")); | |
13544 | ||
13545 | if ((val & ((1 << op->shift) - 1)) != 0 | |
13546 | || val < (mintiny << op->shift) | |
13547 | || val > (maxtiny << op->shift)) | |
13548 | return 1; | |
13549 | else | |
13550 | return 0; | |
13551 | } | |
13552 | ||
4a6a3df4 AO |
13553 | /* Compute the length of a branch sequence, and adjust the |
13554 | RELAX_BRANCH_TOOFAR bit accordingly. If FRAGP is NULL, the | |
13555 | worst-case length is computed, with UPDATE being used to indicate | |
13556 | whether an unconditional (-1), branch-likely (+1) or regular (0) | |
13557 | branch is to be computed. */ | |
13558 | static int | |
13559 | relaxed_branch_length (fragp, sec, update) | |
13560 | fragS *fragp; | |
13561 | asection *sec; | |
13562 | int update; | |
13563 | { | |
b34976b6 | 13564 | bfd_boolean toofar; |
4a6a3df4 AO |
13565 | int length; |
13566 | ||
13567 | if (fragp | |
13568 | && S_IS_DEFINED (fragp->fr_symbol) | |
13569 | && sec == S_GET_SEGMENT (fragp->fr_symbol)) | |
13570 | { | |
13571 | addressT addr; | |
13572 | offsetT val; | |
13573 | ||
13574 | val = S_GET_VALUE (fragp->fr_symbol) + fragp->fr_offset; | |
13575 | ||
13576 | addr = fragp->fr_address + fragp->fr_fix + 4; | |
13577 | ||
13578 | val -= addr; | |
13579 | ||
13580 | toofar = val < - (0x8000 << 2) || val >= (0x8000 << 2); | |
13581 | } | |
13582 | else if (fragp) | |
13583 | /* If the symbol is not defined or it's in a different segment, | |
13584 | assume the user knows what's going on and emit a short | |
13585 | branch. */ | |
b34976b6 | 13586 | toofar = FALSE; |
4a6a3df4 | 13587 | else |
b34976b6 | 13588 | toofar = TRUE; |
4a6a3df4 AO |
13589 | |
13590 | if (fragp && update && toofar != RELAX_BRANCH_TOOFAR (fragp->fr_subtype)) | |
13591 | fragp->fr_subtype | |
af6ae2ad | 13592 | = RELAX_BRANCH_ENCODE (RELAX_BRANCH_UNCOND (fragp->fr_subtype), |
4a6a3df4 AO |
13593 | RELAX_BRANCH_LIKELY (fragp->fr_subtype), |
13594 | RELAX_BRANCH_LINK (fragp->fr_subtype), | |
13595 | toofar); | |
13596 | ||
13597 | length = 4; | |
13598 | if (toofar) | |
13599 | { | |
13600 | if (fragp ? RELAX_BRANCH_LIKELY (fragp->fr_subtype) : (update > 0)) | |
13601 | length += 8; | |
13602 | ||
13603 | if (mips_pic != NO_PIC) | |
13604 | { | |
13605 | /* Additional space for PIC loading of target address. */ | |
13606 | length += 8; | |
13607 | if (mips_opts.isa == ISA_MIPS1) | |
13608 | /* Additional space for $at-stabilizing nop. */ | |
13609 | length += 4; | |
13610 | } | |
13611 | ||
13612 | /* If branch is conditional. */ | |
13613 | if (fragp ? !RELAX_BRANCH_UNCOND (fragp->fr_subtype) : (update >= 0)) | |
13614 | length += 8; | |
13615 | } | |
b34976b6 | 13616 | |
4a6a3df4 AO |
13617 | return length; |
13618 | } | |
13619 | ||
252b5132 RH |
13620 | /* Estimate the size of a frag before relaxing. Unless this is the |
13621 | mips16, we are not really relaxing here, and the final size is | |
13622 | encoded in the subtype information. For the mips16, we have to | |
13623 | decide whether we are using an extended opcode or not. */ | |
13624 | ||
252b5132 RH |
13625 | int |
13626 | md_estimate_size_before_relax (fragp, segtype) | |
13627 | fragS *fragp; | |
13628 | asection *segtype; | |
13629 | { | |
5919d012 | 13630 | int change; |
252b5132 | 13631 | |
4a6a3df4 AO |
13632 | if (RELAX_BRANCH_P (fragp->fr_subtype)) |
13633 | { | |
13634 | ||
b34976b6 AM |
13635 | fragp->fr_var = relaxed_branch_length (fragp, segtype, FALSE); |
13636 | ||
4a6a3df4 AO |
13637 | return fragp->fr_var; |
13638 | } | |
13639 | ||
252b5132 | 13640 | if (RELAX_MIPS16_P (fragp->fr_subtype)) |
177b4a6a AO |
13641 | /* We don't want to modify the EXTENDED bit here; it might get us |
13642 | into infinite loops. We change it only in mips_relax_frag(). */ | |
13643 | return (RELAX_MIPS16_EXTENDED (fragp->fr_subtype) ? 4 : 2); | |
252b5132 RH |
13644 | |
13645 | if (mips_pic == NO_PIC) | |
5919d012 | 13646 | change = nopic_need_relax (fragp->fr_symbol, 0); |
252b5132 | 13647 | else if (mips_pic == SVR4_PIC) |
5919d012 | 13648 | change = pic_need_relax (fragp->fr_symbol, segtype); |
252b5132 RH |
13649 | else |
13650 | abort (); | |
13651 | ||
13652 | if (change) | |
13653 | { | |
13654 | /* Record the offset to the first reloc in the fr_opcode field. | |
13655 | This lets md_convert_frag and tc_gen_reloc know that the code | |
13656 | must be expanded. */ | |
13657 | fragp->fr_opcode = (fragp->fr_literal | |
13658 | + fragp->fr_fix | |
13659 | - RELAX_OLD (fragp->fr_subtype) | |
13660 | + RELAX_RELOC1 (fragp->fr_subtype)); | |
13661 | /* FIXME: This really needs as_warn_where. */ | |
13662 | if (RELAX_WARN (fragp->fr_subtype)) | |
9a41af64 TS |
13663 | as_warn (_("AT used after \".set noat\" or macro used after " |
13664 | "\".set nomacro\"")); | |
13665 | ||
13666 | return RELAX_NEW (fragp->fr_subtype) - RELAX_OLD (fragp->fr_subtype); | |
252b5132 RH |
13667 | } |
13668 | ||
9a41af64 | 13669 | return 0; |
252b5132 RH |
13670 | } |
13671 | ||
13672 | /* This is called to see whether a reloc against a defined symbol | |
13673 | should be converted into a reloc against a section. Don't adjust | |
13674 | MIPS16 jump relocations, so we don't have to worry about the format | |
13675 | of the offset in the .o file. Don't adjust relocations against | |
13676 | mips16 symbols, so that the linker can find them if it needs to set | |
13677 | up a stub. */ | |
13678 | ||
13679 | int | |
13680 | mips_fix_adjustable (fixp) | |
13681 | fixS *fixp; | |
13682 | { | |
13683 | if (fixp->fx_r_type == BFD_RELOC_MIPS16_JMP) | |
13684 | return 0; | |
a161fe53 | 13685 | |
252b5132 RH |
13686 | if (fixp->fx_r_type == BFD_RELOC_VTABLE_INHERIT |
13687 | || fixp->fx_r_type == BFD_RELOC_VTABLE_ENTRY) | |
13688 | return 0; | |
a161fe53 | 13689 | |
252b5132 RH |
13690 | if (fixp->fx_addsy == NULL) |
13691 | return 1; | |
a161fe53 | 13692 | |
252b5132 RH |
13693 | #ifdef OBJ_ELF |
13694 | if (OUTPUT_FLAVOR == bfd_target_elf_flavour | |
13695 | && S_GET_OTHER (fixp->fx_addsy) == STO_MIPS16 | |
13696 | && fixp->fx_subsy == NULL) | |
13697 | return 0; | |
13698 | #endif | |
a161fe53 | 13699 | |
252b5132 RH |
13700 | return 1; |
13701 | } | |
13702 | ||
13703 | /* Translate internal representation of relocation info to BFD target | |
13704 | format. */ | |
13705 | ||
13706 | arelent ** | |
13707 | tc_gen_reloc (section, fixp) | |
43841e91 | 13708 | asection *section ATTRIBUTE_UNUSED; |
252b5132 RH |
13709 | fixS *fixp; |
13710 | { | |
13711 | static arelent *retval[4]; | |
13712 | arelent *reloc; | |
13713 | bfd_reloc_code_real_type code; | |
13714 | ||
13715 | reloc = retval[0] = (arelent *) xmalloc (sizeof (arelent)); | |
13716 | retval[1] = NULL; | |
13717 | ||
49309057 ILT |
13718 | reloc->sym_ptr_ptr = (asymbol **) xmalloc (sizeof (asymbol *)); |
13719 | *reloc->sym_ptr_ptr = symbol_get_bfdsym (fixp->fx_addsy); | |
252b5132 RH |
13720 | reloc->address = fixp->fx_frag->fr_address + fixp->fx_where; |
13721 | ||
13722 | if (mips_pic == EMBEDDED_PIC | |
13723 | && SWITCH_TABLE (fixp)) | |
13724 | { | |
13725 | /* For a switch table entry we use a special reloc. The addend | |
13726 | is actually the difference between the reloc address and the | |
13727 | subtrahend. */ | |
13728 | reloc->addend = reloc->address - S_GET_VALUE (fixp->fx_subsy); | |
13729 | if (OUTPUT_FLAVOR != bfd_target_ecoff_flavour) | |
13730 | as_fatal (_("Double check fx_r_type in tc-mips.c:tc_gen_reloc")); | |
13731 | fixp->fx_r_type = BFD_RELOC_GPREL32; | |
13732 | } | |
13733 | else if (fixp->fx_r_type == BFD_RELOC_PCREL_LO16) | |
13734 | { | |
4514d474 CD |
13735 | if (OUTPUT_FLAVOR == bfd_target_elf_flavour) |
13736 | reloc->addend = fixp->fx_addnumber; | |
252b5132 | 13737 | else |
4514d474 CD |
13738 | { |
13739 | /* We use a special addend for an internal RELLO reloc. */ | |
13740 | if (symbol_section_p (fixp->fx_addsy)) | |
13741 | reloc->addend = reloc->address - S_GET_VALUE (fixp->fx_subsy); | |
13742 | else | |
13743 | reloc->addend = fixp->fx_addnumber + reloc->address; | |
13744 | } | |
252b5132 RH |
13745 | } |
13746 | else if (fixp->fx_r_type == BFD_RELOC_PCREL_HI16_S) | |
13747 | { | |
13748 | assert (fixp->fx_next != NULL | |
13749 | && fixp->fx_next->fx_r_type == BFD_RELOC_PCREL_LO16); | |
4514d474 CD |
13750 | |
13751 | /* The reloc is relative to the RELLO; adjust the addend | |
252b5132 | 13752 | accordingly. */ |
4514d474 CD |
13753 | if (OUTPUT_FLAVOR == bfd_target_elf_flavour) |
13754 | reloc->addend = fixp->fx_next->fx_addnumber; | |
252b5132 | 13755 | else |
4514d474 CD |
13756 | { |
13757 | /* We use a special addend for an internal RELHI reloc. */ | |
13758 | if (symbol_section_p (fixp->fx_addsy)) | |
13759 | reloc->addend = (fixp->fx_next->fx_frag->fr_address | |
13760 | + fixp->fx_next->fx_where | |
13761 | - S_GET_VALUE (fixp->fx_subsy)); | |
13762 | else | |
13763 | reloc->addend = (fixp->fx_addnumber | |
13764 | + fixp->fx_next->fx_frag->fr_address | |
13765 | + fixp->fx_next->fx_where); | |
13766 | } | |
252b5132 | 13767 | } |
4514d474 CD |
13768 | else if (fixp->fx_pcrel == 0 || OUTPUT_FLAVOR == bfd_target_elf_flavour) |
13769 | reloc->addend = fixp->fx_addnumber; | |
252b5132 RH |
13770 | else |
13771 | { | |
13772 | if (OUTPUT_FLAVOR != bfd_target_aout_flavour) | |
13773 | /* A gruesome hack which is a result of the gruesome gas reloc | |
13774 | handling. */ | |
13775 | reloc->addend = reloc->address; | |
13776 | else | |
13777 | reloc->addend = -reloc->address; | |
13778 | } | |
13779 | ||
13780 | /* If this is a variant frag, we may need to adjust the existing | |
13781 | reloc and generate a new one. */ | |
13782 | if (fixp->fx_frag->fr_opcode != NULL | |
ed6fb7bd SC |
13783 | && ((fixp->fx_r_type == BFD_RELOC_GPREL16 |
13784 | && ! HAVE_NEWABI) | |
f5040a92 AO |
13785 | || (fixp->fx_r_type == BFD_RELOC_MIPS_GOT_DISP |
13786 | && HAVE_NEWABI) | |
252b5132 RH |
13787 | || fixp->fx_r_type == BFD_RELOC_MIPS_GOT16 |
13788 | || fixp->fx_r_type == BFD_RELOC_MIPS_CALL16 | |
13789 | || fixp->fx_r_type == BFD_RELOC_MIPS_GOT_HI16 | |
13790 | || fixp->fx_r_type == BFD_RELOC_MIPS_GOT_LO16 | |
13791 | || fixp->fx_r_type == BFD_RELOC_MIPS_CALL_HI16 | |
6478892d | 13792 | || fixp->fx_r_type == BFD_RELOC_MIPS_CALL_LO16) |
ed6fb7bd | 13793 | ) |
252b5132 RH |
13794 | { |
13795 | arelent *reloc2; | |
13796 | ||
13797 | assert (! RELAX_MIPS16_P (fixp->fx_frag->fr_subtype)); | |
13798 | ||
13799 | /* If this is not the last reloc in this frag, then we have two | |
13800 | GPREL relocs, or a GOT_HI16/GOT_LO16 pair, or a | |
13801 | CALL_HI16/CALL_LO16, both of which are being replaced. Let | |
13802 | the second one handle all of them. */ | |
13803 | if (fixp->fx_next != NULL | |
13804 | && fixp->fx_frag == fixp->fx_next->fx_frag) | |
13805 | { | |
cdf6fd85 TS |
13806 | assert ((fixp->fx_r_type == BFD_RELOC_GPREL16 |
13807 | && fixp->fx_next->fx_r_type == BFD_RELOC_GPREL16) | |
252b5132 RH |
13808 | || (fixp->fx_r_type == BFD_RELOC_MIPS_GOT_HI16 |
13809 | && (fixp->fx_next->fx_r_type | |
13810 | == BFD_RELOC_MIPS_GOT_LO16)) | |
13811 | || (fixp->fx_r_type == BFD_RELOC_MIPS_CALL_HI16 | |
13812 | && (fixp->fx_next->fx_r_type | |
13813 | == BFD_RELOC_MIPS_CALL_LO16))); | |
13814 | retval[0] = NULL; | |
13815 | return retval; | |
13816 | } | |
13817 | ||
13818 | fixp->fx_where = fixp->fx_frag->fr_opcode - fixp->fx_frag->fr_literal; | |
13819 | reloc->address = fixp->fx_frag->fr_address + fixp->fx_where; | |
f5040a92 | 13820 | reloc->addend += fixp->fx_frag->tc_frag_data.tc_fr_offset; |
252b5132 RH |
13821 | reloc2 = retval[1] = (arelent *) xmalloc (sizeof (arelent)); |
13822 | retval[2] = NULL; | |
49309057 ILT |
13823 | reloc2->sym_ptr_ptr = (asymbol **) xmalloc (sizeof (asymbol *)); |
13824 | *reloc2->sym_ptr_ptr = symbol_get_bfdsym (fixp->fx_addsy); | |
252b5132 RH |
13825 | reloc2->address = (reloc->address |
13826 | + (RELAX_RELOC2 (fixp->fx_frag->fr_subtype) | |
13827 | - RELAX_RELOC1 (fixp->fx_frag->fr_subtype))); | |
f5040a92 AO |
13828 | reloc2->addend = fixp->fx_addnumber |
13829 | + fixp->fx_frag->tc_frag_data.tc_fr_offset; | |
252b5132 RH |
13830 | reloc2->howto = bfd_reloc_type_lookup (stdoutput, BFD_RELOC_LO16); |
13831 | assert (reloc2->howto != NULL); | |
13832 | ||
13833 | if (RELAX_RELOC3 (fixp->fx_frag->fr_subtype)) | |
13834 | { | |
13835 | arelent *reloc3; | |
13836 | ||
13837 | reloc3 = retval[2] = (arelent *) xmalloc (sizeof (arelent)); | |
13838 | retval[3] = NULL; | |
13839 | *reloc3 = *reloc2; | |
13840 | reloc3->address += 4; | |
13841 | } | |
13842 | ||
13843 | if (mips_pic == NO_PIC) | |
13844 | { | |
cdf6fd85 | 13845 | assert (fixp->fx_r_type == BFD_RELOC_GPREL16); |
252b5132 RH |
13846 | fixp->fx_r_type = BFD_RELOC_HI16_S; |
13847 | } | |
13848 | else if (mips_pic == SVR4_PIC) | |
13849 | { | |
13850 | switch (fixp->fx_r_type) | |
13851 | { | |
13852 | default: | |
13853 | abort (); | |
13854 | case BFD_RELOC_MIPS_GOT16: | |
13855 | break; | |
252b5132 RH |
13856 | case BFD_RELOC_MIPS_GOT_LO16: |
13857 | case BFD_RELOC_MIPS_CALL_LO16: | |
ed6fb7bd SC |
13858 | if (HAVE_NEWABI) |
13859 | { | |
ed6fb7bd SC |
13860 | fixp->fx_r_type = BFD_RELOC_MIPS_GOT_PAGE; |
13861 | reloc2->howto = bfd_reloc_type_lookup | |
13862 | (stdoutput, BFD_RELOC_MIPS_GOT_OFST); | |
13863 | } | |
13864 | else | |
13865 | fixp->fx_r_type = BFD_RELOC_MIPS_GOT16; | |
13866 | break; | |
f5040a92 AO |
13867 | case BFD_RELOC_MIPS_CALL16: |
13868 | case BFD_RELOC_MIPS_GOT_OFST: | |
13869 | case BFD_RELOC_MIPS_GOT_DISP: | |
13870 | if (HAVE_NEWABI) | |
13871 | { | |
13872 | /* It may seem nonsensical to relax GOT_DISP to | |
13873 | GOT_DISP, but we're actually turning a GOT_DISP | |
13874 | without offset into a GOT_DISP with an offset, | |
13875 | getting rid of the separate addition, which we can | |
13876 | do when the symbol is found to be local. */ | |
13877 | fixp->fx_r_type = BFD_RELOC_MIPS_GOT_DISP; | |
13878 | retval[1] = NULL; | |
13879 | } | |
13880 | else | |
13881 | fixp->fx_r_type = BFD_RELOC_MIPS_GOT16; | |
13882 | break; | |
252b5132 RH |
13883 | } |
13884 | } | |
13885 | else | |
13886 | abort (); | |
13887 | } | |
13888 | ||
438c16b8 TS |
13889 | /* Since the old MIPS ELF ABI uses Rel instead of Rela, encode the vtable |
13890 | entry to be used in the relocation's section offset. */ | |
13891 | if (! HAVE_NEWABI && fixp->fx_r_type == BFD_RELOC_VTABLE_ENTRY) | |
252b5132 RH |
13892 | { |
13893 | reloc->address = reloc->addend; | |
13894 | reloc->addend = 0; | |
13895 | } | |
13896 | ||
13897 | /* Since DIFF_EXPR_OK is defined in tc-mips.h, it is possible that | |
13898 | fixup_segment converted a non-PC relative reloc into a PC | |
13899 | relative reloc. In such a case, we need to convert the reloc | |
13900 | code. */ | |
13901 | code = fixp->fx_r_type; | |
13902 | if (fixp->fx_pcrel) | |
13903 | { | |
13904 | switch (code) | |
13905 | { | |
13906 | case BFD_RELOC_8: | |
13907 | code = BFD_RELOC_8_PCREL; | |
13908 | break; | |
13909 | case BFD_RELOC_16: | |
13910 | code = BFD_RELOC_16_PCREL; | |
13911 | break; | |
13912 | case BFD_RELOC_32: | |
13913 | code = BFD_RELOC_32_PCREL; | |
13914 | break; | |
13915 | case BFD_RELOC_64: | |
13916 | code = BFD_RELOC_64_PCREL; | |
13917 | break; | |
13918 | case BFD_RELOC_8_PCREL: | |
13919 | case BFD_RELOC_16_PCREL: | |
13920 | case BFD_RELOC_32_PCREL: | |
13921 | case BFD_RELOC_64_PCREL: | |
13922 | case BFD_RELOC_16_PCREL_S2: | |
13923 | case BFD_RELOC_PCREL_HI16_S: | |
13924 | case BFD_RELOC_PCREL_LO16: | |
13925 | break; | |
13926 | default: | |
13927 | as_bad_where (fixp->fx_file, fixp->fx_line, | |
13928 | _("Cannot make %s relocation PC relative"), | |
13929 | bfd_get_reloc_code_name (code)); | |
13930 | } | |
13931 | } | |
13932 | ||
add55e1f RS |
13933 | #ifdef OBJ_ELF |
13934 | /* md_apply_fix3 has a double-subtraction hack to get | |
13935 | bfd_install_relocation to behave nicely. GPREL relocations are | |
13936 | handled correctly without this hack, so undo it here. We can't | |
13937 | stop md_apply_fix3 from subtracting twice in the first place since | |
13938 | the fake addend is required for variant frags above. */ | |
13939 | if (fixp->fx_addsy != NULL && OUTPUT_FLAVOR == bfd_target_elf_flavour | |
98605598 | 13940 | && (code == BFD_RELOC_GPREL16 || code == BFD_RELOC_MIPS16_GPREL) |
add55e1f RS |
13941 | && reloc->addend != 0 |
13942 | && mips_need_elf_addend_fixup (fixp)) | |
d8dbbec1 L |
13943 | { |
13944 | /* If howto->partial_inplace is false, md_apply_fix3 will only | |
13945 | subtract it once. */ | |
13946 | reloc_howto_type *howto; | |
13947 | ||
13948 | howto = bfd_reloc_type_lookup (stdoutput, fixp->fx_r_type); | |
13949 | if (howto->partial_inplace) | |
13950 | reloc->addend += S_GET_VALUE (fixp->fx_addsy); | |
13951 | } | |
add55e1f RS |
13952 | #endif |
13953 | ||
0b25d3e6 AO |
13954 | /* To support a PC relative reloc when generating embedded PIC code |
13955 | for ECOFF, we use a Cygnus extension. We check for that here to | |
13956 | make sure that we don't let such a reloc escape normally. */ | |
13957 | if ((OUTPUT_FLAVOR == bfd_target_ecoff_flavour | |
13958 | || OUTPUT_FLAVOR == bfd_target_elf_flavour) | |
13959 | && code == BFD_RELOC_16_PCREL_S2 | |
13960 | && mips_pic != EMBEDDED_PIC) | |
13961 | reloc->howto = NULL; | |
13962 | else | |
13963 | reloc->howto = bfd_reloc_type_lookup (stdoutput, code); | |
13964 | ||
252b5132 RH |
13965 | if (reloc->howto == NULL) |
13966 | { | |
13967 | as_bad_where (fixp->fx_file, fixp->fx_line, | |
13968 | _("Can not represent %s relocation in this object file format"), | |
13969 | bfd_get_reloc_code_name (code)); | |
13970 | retval[0] = NULL; | |
13971 | } | |
13972 | ||
13973 | return retval; | |
13974 | } | |
13975 | ||
13976 | /* Relax a machine dependent frag. This returns the amount by which | |
13977 | the current size of the frag should change. */ | |
13978 | ||
13979 | int | |
4a6a3df4 AO |
13980 | mips_relax_frag (sec, fragp, stretch) |
13981 | asection *sec; | |
252b5132 RH |
13982 | fragS *fragp; |
13983 | long stretch; | |
13984 | { | |
4a6a3df4 AO |
13985 | if (RELAX_BRANCH_P (fragp->fr_subtype)) |
13986 | { | |
13987 | offsetT old_var = fragp->fr_var; | |
b34976b6 AM |
13988 | |
13989 | fragp->fr_var = relaxed_branch_length (fragp, sec, TRUE); | |
4a6a3df4 AO |
13990 | |
13991 | return fragp->fr_var - old_var; | |
13992 | } | |
13993 | ||
252b5132 RH |
13994 | if (! RELAX_MIPS16_P (fragp->fr_subtype)) |
13995 | return 0; | |
13996 | ||
c4e7957c | 13997 | if (mips16_extended_frag (fragp, NULL, stretch)) |
252b5132 RH |
13998 | { |
13999 | if (RELAX_MIPS16_EXTENDED (fragp->fr_subtype)) | |
14000 | return 0; | |
14001 | fragp->fr_subtype = RELAX_MIPS16_MARK_EXTENDED (fragp->fr_subtype); | |
14002 | return 2; | |
14003 | } | |
14004 | else | |
14005 | { | |
14006 | if (! RELAX_MIPS16_EXTENDED (fragp->fr_subtype)) | |
14007 | return 0; | |
14008 | fragp->fr_subtype = RELAX_MIPS16_CLEAR_EXTENDED (fragp->fr_subtype); | |
14009 | return -2; | |
14010 | } | |
14011 | ||
14012 | return 0; | |
14013 | } | |
14014 | ||
14015 | /* Convert a machine dependent frag. */ | |
14016 | ||
14017 | void | |
14018 | md_convert_frag (abfd, asec, fragp) | |
43841e91 | 14019 | bfd *abfd ATTRIBUTE_UNUSED; |
252b5132 RH |
14020 | segT asec; |
14021 | fragS *fragp; | |
14022 | { | |
14023 | int old, new; | |
14024 | char *fixptr; | |
14025 | ||
4a6a3df4 AO |
14026 | if (RELAX_BRANCH_P (fragp->fr_subtype)) |
14027 | { | |
14028 | bfd_byte *buf; | |
14029 | unsigned long insn; | |
14030 | expressionS exp; | |
14031 | fixS *fixp; | |
b34976b6 | 14032 | |
4a6a3df4 AO |
14033 | buf = (bfd_byte *)fragp->fr_literal + fragp->fr_fix; |
14034 | ||
14035 | if (target_big_endian) | |
14036 | insn = bfd_getb32 (buf); | |
14037 | else | |
14038 | insn = bfd_getl32 (buf); | |
b34976b6 | 14039 | |
4a6a3df4 AO |
14040 | if (!RELAX_BRANCH_TOOFAR (fragp->fr_subtype)) |
14041 | { | |
14042 | /* We generate a fixup instead of applying it right now | |
14043 | because, if there are linker relaxations, we're going to | |
14044 | need the relocations. */ | |
14045 | exp.X_op = O_symbol; | |
14046 | exp.X_add_symbol = fragp->fr_symbol; | |
14047 | exp.X_add_number = fragp->fr_offset; | |
14048 | ||
14049 | fixp = fix_new_exp (fragp, buf - (bfd_byte *)fragp->fr_literal, | |
0b25d3e6 AO |
14050 | 4, &exp, 1, |
14051 | BFD_RELOC_16_PCREL_S2); | |
4a6a3df4 AO |
14052 | fixp->fx_file = fragp->fr_file; |
14053 | fixp->fx_line = fragp->fr_line; | |
b34976b6 | 14054 | |
4a6a3df4 AO |
14055 | md_number_to_chars ((char *)buf, insn, 4); |
14056 | buf += 4; | |
14057 | } | |
14058 | else | |
14059 | { | |
14060 | int i; | |
14061 | ||
14062 | as_warn_where (fragp->fr_file, fragp->fr_line, | |
14063 | _("relaxed out-of-range branch into a jump")); | |
14064 | ||
14065 | if (RELAX_BRANCH_UNCOND (fragp->fr_subtype)) | |
14066 | goto uncond; | |
14067 | ||
14068 | if (!RELAX_BRANCH_LIKELY (fragp->fr_subtype)) | |
14069 | { | |
14070 | /* Reverse the branch. */ | |
14071 | switch ((insn >> 28) & 0xf) | |
14072 | { | |
14073 | case 4: | |
14074 | /* bc[0-3][tf]l? and bc1any[24][ft] instructions can | |
14075 | have the condition reversed by tweaking a single | |
14076 | bit, and their opcodes all have 0x4???????. */ | |
14077 | assert ((insn & 0xf1000000) == 0x41000000); | |
14078 | insn ^= 0x00010000; | |
14079 | break; | |
14080 | ||
14081 | case 0: | |
14082 | /* bltz 0x04000000 bgez 0x04010000 | |
14083 | bltzal 0x04100000 bgezal 0x04110000 */ | |
14084 | assert ((insn & 0xfc0e0000) == 0x04000000); | |
14085 | insn ^= 0x00010000; | |
14086 | break; | |
b34976b6 | 14087 | |
4a6a3df4 AO |
14088 | case 1: |
14089 | /* beq 0x10000000 bne 0x14000000 | |
14090 | blez 0x18000000 bgtz 0x1c000000 */ | |
14091 | insn ^= 0x04000000; | |
14092 | break; | |
14093 | ||
14094 | default: | |
14095 | abort (); | |
14096 | } | |
14097 | } | |
14098 | ||
14099 | if (RELAX_BRANCH_LINK (fragp->fr_subtype)) | |
14100 | { | |
14101 | /* Clear the and-link bit. */ | |
14102 | assert ((insn & 0xfc1c0000) == 0x04100000); | |
14103 | ||
14104 | /* bltzal 0x04100000 bgezal 0x04110000 | |
14105 | bltzall 0x04120000 bgezall 0x04130000 */ | |
14106 | insn &= ~0x00100000; | |
14107 | } | |
14108 | ||
14109 | /* Branch over the branch (if the branch was likely) or the | |
14110 | full jump (not likely case). Compute the offset from the | |
14111 | current instruction to branch to. */ | |
14112 | if (RELAX_BRANCH_LIKELY (fragp->fr_subtype)) | |
14113 | i = 16; | |
14114 | else | |
14115 | { | |
14116 | /* How many bytes in instructions we've already emitted? */ | |
14117 | i = buf - (bfd_byte *)fragp->fr_literal - fragp->fr_fix; | |
14118 | /* How many bytes in instructions from here to the end? */ | |
14119 | i = fragp->fr_var - i; | |
14120 | } | |
14121 | /* Convert to instruction count. */ | |
14122 | i >>= 2; | |
14123 | /* Branch counts from the next instruction. */ | |
b34976b6 | 14124 | i--; |
4a6a3df4 AO |
14125 | insn |= i; |
14126 | /* Branch over the jump. */ | |
14127 | md_number_to_chars ((char *)buf, insn, 4); | |
14128 | buf += 4; | |
14129 | ||
14130 | /* Nop */ | |
14131 | md_number_to_chars ((char*)buf, 0, 4); | |
14132 | buf += 4; | |
14133 | ||
14134 | if (RELAX_BRANCH_LIKELY (fragp->fr_subtype)) | |
14135 | { | |
14136 | /* beql $0, $0, 2f */ | |
14137 | insn = 0x50000000; | |
14138 | /* Compute the PC offset from the current instruction to | |
14139 | the end of the variable frag. */ | |
14140 | /* How many bytes in instructions we've already emitted? */ | |
14141 | i = buf - (bfd_byte *)fragp->fr_literal - fragp->fr_fix; | |
14142 | /* How many bytes in instructions from here to the end? */ | |
14143 | i = fragp->fr_var - i; | |
14144 | /* Convert to instruction count. */ | |
14145 | i >>= 2; | |
14146 | /* Don't decrement i, because we want to branch over the | |
14147 | delay slot. */ | |
14148 | ||
14149 | insn |= i; | |
14150 | md_number_to_chars ((char *)buf, insn, 4); | |
14151 | buf += 4; | |
14152 | ||
14153 | md_number_to_chars ((char *)buf, 0, 4); | |
14154 | buf += 4; | |
14155 | } | |
14156 | ||
14157 | uncond: | |
14158 | if (mips_pic == NO_PIC) | |
14159 | { | |
14160 | /* j or jal. */ | |
14161 | insn = (RELAX_BRANCH_LINK (fragp->fr_subtype) | |
14162 | ? 0x0c000000 : 0x08000000); | |
14163 | exp.X_op = O_symbol; | |
14164 | exp.X_add_symbol = fragp->fr_symbol; | |
14165 | exp.X_add_number = fragp->fr_offset; | |
14166 | ||
14167 | fixp = fix_new_exp (fragp, buf - (bfd_byte *)fragp->fr_literal, | |
14168 | 4, &exp, 0, BFD_RELOC_MIPS_JMP); | |
14169 | fixp->fx_file = fragp->fr_file; | |
14170 | fixp->fx_line = fragp->fr_line; | |
14171 | ||
14172 | md_number_to_chars ((char*)buf, insn, 4); | |
14173 | buf += 4; | |
14174 | } | |
14175 | else | |
14176 | { | |
14177 | /* lw/ld $at, <sym>($gp) R_MIPS_GOT16 */ | |
14178 | insn = HAVE_64BIT_ADDRESSES ? 0xdf810000 : 0x8f810000; | |
14179 | exp.X_op = O_symbol; | |
14180 | exp.X_add_symbol = fragp->fr_symbol; | |
14181 | exp.X_add_number = fragp->fr_offset; | |
14182 | ||
14183 | if (fragp->fr_offset) | |
14184 | { | |
14185 | exp.X_add_symbol = make_expr_symbol (&exp); | |
14186 | exp.X_add_number = 0; | |
14187 | } | |
14188 | ||
14189 | fixp = fix_new_exp (fragp, buf - (bfd_byte *)fragp->fr_literal, | |
14190 | 4, &exp, 0, BFD_RELOC_MIPS_GOT16); | |
14191 | fixp->fx_file = fragp->fr_file; | |
14192 | fixp->fx_line = fragp->fr_line; | |
14193 | ||
14194 | md_number_to_chars ((char*)buf, insn, 4); | |
14195 | buf += 4; | |
b34976b6 | 14196 | |
4a6a3df4 AO |
14197 | if (mips_opts.isa == ISA_MIPS1) |
14198 | { | |
14199 | /* nop */ | |
14200 | md_number_to_chars ((char*)buf, 0, 4); | |
14201 | buf += 4; | |
14202 | } | |
14203 | ||
14204 | /* d/addiu $at, $at, <sym> R_MIPS_LO16 */ | |
14205 | insn = HAVE_64BIT_ADDRESSES ? 0x64210000 : 0x24210000; | |
14206 | ||
14207 | fixp = fix_new_exp (fragp, buf - (bfd_byte *)fragp->fr_literal, | |
14208 | 4, &exp, 0, BFD_RELOC_LO16); | |
14209 | fixp->fx_file = fragp->fr_file; | |
14210 | fixp->fx_line = fragp->fr_line; | |
b34976b6 | 14211 | |
4a6a3df4 AO |
14212 | md_number_to_chars ((char*)buf, insn, 4); |
14213 | buf += 4; | |
14214 | ||
14215 | /* j(al)r $at. */ | |
14216 | if (RELAX_BRANCH_LINK (fragp->fr_subtype)) | |
14217 | insn = 0x0020f809; | |
14218 | else | |
14219 | insn = 0x00200008; | |
14220 | ||
14221 | md_number_to_chars ((char*)buf, insn, 4); | |
14222 | buf += 4; | |
14223 | } | |
14224 | } | |
14225 | ||
14226 | assert (buf == (bfd_byte *)fragp->fr_literal | |
14227 | + fragp->fr_fix + fragp->fr_var); | |
14228 | ||
14229 | fragp->fr_fix += fragp->fr_var; | |
14230 | ||
14231 | return; | |
14232 | } | |
14233 | ||
252b5132 RH |
14234 | if (RELAX_MIPS16_P (fragp->fr_subtype)) |
14235 | { | |
14236 | int type; | |
14237 | register const struct mips16_immed_operand *op; | |
b34976b6 | 14238 | bfd_boolean small, ext; |
252b5132 RH |
14239 | offsetT val; |
14240 | bfd_byte *buf; | |
14241 | unsigned long insn; | |
b34976b6 | 14242 | bfd_boolean use_extend; |
252b5132 RH |
14243 | unsigned short extend; |
14244 | ||
14245 | type = RELAX_MIPS16_TYPE (fragp->fr_subtype); | |
14246 | op = mips16_immed_operands; | |
14247 | while (op->type != type) | |
14248 | ++op; | |
14249 | ||
14250 | if (RELAX_MIPS16_EXTENDED (fragp->fr_subtype)) | |
14251 | { | |
b34976b6 AM |
14252 | small = FALSE; |
14253 | ext = TRUE; | |
252b5132 RH |
14254 | } |
14255 | else | |
14256 | { | |
b34976b6 AM |
14257 | small = TRUE; |
14258 | ext = FALSE; | |
252b5132 RH |
14259 | } |
14260 | ||
6386f3a7 | 14261 | resolve_symbol_value (fragp->fr_symbol); |
252b5132 RH |
14262 | val = S_GET_VALUE (fragp->fr_symbol); |
14263 | if (op->pcrel) | |
14264 | { | |
14265 | addressT addr; | |
14266 | ||
14267 | addr = fragp->fr_address + fragp->fr_fix; | |
14268 | ||
14269 | /* The rules for the base address of a PC relative reloc are | |
14270 | complicated; see mips16_extended_frag. */ | |
14271 | if (type == 'p' || type == 'q') | |
14272 | { | |
14273 | addr += 2; | |
14274 | if (ext) | |
14275 | addr += 2; | |
14276 | /* Ignore the low bit in the target, since it will be | |
14277 | set for a text label. */ | |
14278 | if ((val & 1) != 0) | |
14279 | --val; | |
14280 | } | |
14281 | else if (RELAX_MIPS16_JAL_DSLOT (fragp->fr_subtype)) | |
14282 | addr -= 4; | |
14283 | else if (RELAX_MIPS16_DSLOT (fragp->fr_subtype)) | |
14284 | addr -= 2; | |
14285 | ||
14286 | addr &= ~ (addressT) ((1 << op->shift) - 1); | |
14287 | val -= addr; | |
14288 | ||
14289 | /* Make sure the section winds up with the alignment we have | |
14290 | assumed. */ | |
14291 | if (op->shift > 0) | |
14292 | record_alignment (asec, op->shift); | |
14293 | } | |
14294 | ||
14295 | if (ext | |
14296 | && (RELAX_MIPS16_JAL_DSLOT (fragp->fr_subtype) | |
14297 | || RELAX_MIPS16_DSLOT (fragp->fr_subtype))) | |
14298 | as_warn_where (fragp->fr_file, fragp->fr_line, | |
14299 | _("extended instruction in delay slot")); | |
14300 | ||
14301 | buf = (bfd_byte *) (fragp->fr_literal + fragp->fr_fix); | |
14302 | ||
14303 | if (target_big_endian) | |
14304 | insn = bfd_getb16 (buf); | |
14305 | else | |
14306 | insn = bfd_getl16 (buf); | |
14307 | ||
14308 | mips16_immed (fragp->fr_file, fragp->fr_line, type, val, | |
14309 | RELAX_MIPS16_USER_EXT (fragp->fr_subtype), | |
14310 | small, ext, &insn, &use_extend, &extend); | |
14311 | ||
14312 | if (use_extend) | |
14313 | { | |
874e8986 | 14314 | md_number_to_chars ((char *) buf, 0xf000 | extend, 2); |
252b5132 RH |
14315 | fragp->fr_fix += 2; |
14316 | buf += 2; | |
14317 | } | |
14318 | ||
874e8986 | 14319 | md_number_to_chars ((char *) buf, insn, 2); |
252b5132 RH |
14320 | fragp->fr_fix += 2; |
14321 | buf += 2; | |
14322 | } | |
14323 | else | |
14324 | { | |
14325 | if (fragp->fr_opcode == NULL) | |
14326 | return; | |
14327 | ||
14328 | old = RELAX_OLD (fragp->fr_subtype); | |
14329 | new = RELAX_NEW (fragp->fr_subtype); | |
14330 | fixptr = fragp->fr_literal + fragp->fr_fix; | |
14331 | ||
14332 | if (new > 0) | |
f5040a92 | 14333 | memmove (fixptr - old, fixptr, new); |
252b5132 RH |
14334 | |
14335 | fragp->fr_fix += new - old; | |
14336 | } | |
14337 | } | |
14338 | ||
14339 | #ifdef OBJ_ELF | |
14340 | ||
14341 | /* This function is called after the relocs have been generated. | |
14342 | We've been storing mips16 text labels as odd. Here we convert them | |
14343 | back to even for the convenience of the debugger. */ | |
14344 | ||
14345 | void | |
14346 | mips_frob_file_after_relocs () | |
14347 | { | |
14348 | asymbol **syms; | |
14349 | unsigned int count, i; | |
14350 | ||
14351 | if (OUTPUT_FLAVOR != bfd_target_elf_flavour) | |
14352 | return; | |
14353 | ||
14354 | syms = bfd_get_outsymbols (stdoutput); | |
14355 | count = bfd_get_symcount (stdoutput); | |
14356 | for (i = 0; i < count; i++, syms++) | |
14357 | { | |
14358 | if (elf_symbol (*syms)->internal_elf_sym.st_other == STO_MIPS16 | |
14359 | && ((*syms)->value & 1) != 0) | |
14360 | { | |
14361 | (*syms)->value &= ~1; | |
14362 | /* If the symbol has an odd size, it was probably computed | |
14363 | incorrectly, so adjust that as well. */ | |
14364 | if ((elf_symbol (*syms)->internal_elf_sym.st_size & 1) != 0) | |
14365 | ++elf_symbol (*syms)->internal_elf_sym.st_size; | |
14366 | } | |
14367 | } | |
14368 | } | |
14369 | ||
14370 | #endif | |
14371 | ||
14372 | /* This function is called whenever a label is defined. It is used | |
14373 | when handling branch delays; if a branch has a label, we assume we | |
14374 | can not move it. */ | |
14375 | ||
14376 | void | |
14377 | mips_define_label (sym) | |
14378 | symbolS *sym; | |
14379 | { | |
14380 | struct insn_label_list *l; | |
14381 | ||
14382 | if (free_insn_labels == NULL) | |
14383 | l = (struct insn_label_list *) xmalloc (sizeof *l); | |
14384 | else | |
14385 | { | |
14386 | l = free_insn_labels; | |
14387 | free_insn_labels = l->next; | |
14388 | } | |
14389 | ||
14390 | l->label = sym; | |
14391 | l->next = insn_labels; | |
14392 | insn_labels = l; | |
14393 | } | |
14394 | \f | |
14395 | #if defined (OBJ_ELF) || defined (OBJ_MAYBE_ELF) | |
14396 | ||
14397 | /* Some special processing for a MIPS ELF file. */ | |
14398 | ||
14399 | void | |
14400 | mips_elf_final_processing () | |
14401 | { | |
14402 | /* Write out the register information. */ | |
316f5878 | 14403 | if (mips_abi != N64_ABI) |
252b5132 RH |
14404 | { |
14405 | Elf32_RegInfo s; | |
14406 | ||
14407 | s.ri_gprmask = mips_gprmask; | |
14408 | s.ri_cprmask[0] = mips_cprmask[0]; | |
14409 | s.ri_cprmask[1] = mips_cprmask[1]; | |
14410 | s.ri_cprmask[2] = mips_cprmask[2]; | |
14411 | s.ri_cprmask[3] = mips_cprmask[3]; | |
14412 | /* The gp_value field is set by the MIPS ELF backend. */ | |
14413 | ||
14414 | bfd_mips_elf32_swap_reginfo_out (stdoutput, &s, | |
14415 | ((Elf32_External_RegInfo *) | |
14416 | mips_regmask_frag)); | |
14417 | } | |
14418 | else | |
14419 | { | |
14420 | Elf64_Internal_RegInfo s; | |
14421 | ||
14422 | s.ri_gprmask = mips_gprmask; | |
14423 | s.ri_pad = 0; | |
14424 | s.ri_cprmask[0] = mips_cprmask[0]; | |
14425 | s.ri_cprmask[1] = mips_cprmask[1]; | |
14426 | s.ri_cprmask[2] = mips_cprmask[2]; | |
14427 | s.ri_cprmask[3] = mips_cprmask[3]; | |
14428 | /* The gp_value field is set by the MIPS ELF backend. */ | |
14429 | ||
14430 | bfd_mips_elf64_swap_reginfo_out (stdoutput, &s, | |
14431 | ((Elf64_External_RegInfo *) | |
14432 | mips_regmask_frag)); | |
14433 | } | |
14434 | ||
14435 | /* Set the MIPS ELF flag bits. FIXME: There should probably be some | |
14436 | sort of BFD interface for this. */ | |
14437 | if (mips_any_noreorder) | |
14438 | elf_elfheader (stdoutput)->e_flags |= EF_MIPS_NOREORDER; | |
14439 | if (mips_pic != NO_PIC) | |
14440 | elf_elfheader (stdoutput)->e_flags |= EF_MIPS_PIC; | |
14441 | ||
98d3f06f | 14442 | /* Set MIPS ELF flags for ASEs. */ |
a4672219 TS |
14443 | if (file_ase_mips16) |
14444 | elf_elfheader (stdoutput)->e_flags |= EF_MIPS_ARCH_ASE_M16; | |
1f25f5d3 CD |
14445 | #if 0 /* XXX FIXME */ |
14446 | if (file_ase_mips3d) | |
14447 | elf_elfheader (stdoutput)->e_flags |= ???; | |
14448 | #endif | |
deec1734 CD |
14449 | if (file_ase_mdmx) |
14450 | elf_elfheader (stdoutput)->e_flags |= EF_MIPS_ARCH_ASE_MDMX; | |
1f25f5d3 | 14451 | |
bdaaa2e1 | 14452 | /* Set the MIPS ELF ABI flags. */ |
316f5878 | 14453 | if (mips_abi == O32_ABI && USE_E_MIPS_ABI_O32) |
252b5132 | 14454 | elf_elfheader (stdoutput)->e_flags |= E_MIPS_ABI_O32; |
316f5878 | 14455 | else if (mips_abi == O64_ABI) |
252b5132 | 14456 | elf_elfheader (stdoutput)->e_flags |= E_MIPS_ABI_O64; |
316f5878 | 14457 | else if (mips_abi == EABI_ABI) |
252b5132 | 14458 | { |
316f5878 | 14459 | if (!file_mips_gp32) |
252b5132 RH |
14460 | elf_elfheader (stdoutput)->e_flags |= E_MIPS_ABI_EABI64; |
14461 | else | |
14462 | elf_elfheader (stdoutput)->e_flags |= E_MIPS_ABI_EABI32; | |
14463 | } | |
316f5878 | 14464 | else if (mips_abi == N32_ABI) |
be00bddd TS |
14465 | elf_elfheader (stdoutput)->e_flags |= EF_MIPS_ABI2; |
14466 | ||
c9914766 | 14467 | /* Nothing to do for N64_ABI. */ |
252b5132 RH |
14468 | |
14469 | if (mips_32bitmode) | |
14470 | elf_elfheader (stdoutput)->e_flags |= EF_MIPS_32BITMODE; | |
14471 | } | |
14472 | ||
14473 | #endif /* OBJ_ELF || OBJ_MAYBE_ELF */ | |
14474 | \f | |
beae10d5 KH |
14475 | typedef struct proc { |
14476 | symbolS *isym; | |
14477 | unsigned long reg_mask; | |
14478 | unsigned long reg_offset; | |
14479 | unsigned long fpreg_mask; | |
14480 | unsigned long fpreg_offset; | |
14481 | unsigned long frame_offset; | |
14482 | unsigned long frame_reg; | |
14483 | unsigned long pc_reg; | |
14484 | } procS; | |
252b5132 RH |
14485 | |
14486 | static procS cur_proc; | |
14487 | static procS *cur_proc_ptr; | |
14488 | static int numprocs; | |
14489 | ||
0a9ef439 | 14490 | /* Fill in an rs_align_code fragment. */ |
a19d8eb0 | 14491 | |
0a9ef439 RH |
14492 | void |
14493 | mips_handle_align (fragp) | |
14494 | fragS *fragp; | |
a19d8eb0 | 14495 | { |
0a9ef439 RH |
14496 | if (fragp->fr_type != rs_align_code) |
14497 | return; | |
14498 | ||
14499 | if (mips_opts.mips16) | |
a19d8eb0 CP |
14500 | { |
14501 | static const unsigned char be_nop[] = { 0x65, 0x00 }; | |
14502 | static const unsigned char le_nop[] = { 0x00, 0x65 }; | |
14503 | ||
0a9ef439 RH |
14504 | int bytes; |
14505 | char *p; | |
a19d8eb0 | 14506 | |
0a9ef439 RH |
14507 | bytes = fragp->fr_next->fr_address - fragp->fr_address - fragp->fr_fix; |
14508 | p = fragp->fr_literal + fragp->fr_fix; | |
14509 | ||
14510 | if (bytes & 1) | |
14511 | { | |
14512 | *p++ = 0; | |
f9419b05 | 14513 | fragp->fr_fix++; |
0a9ef439 RH |
14514 | } |
14515 | ||
14516 | memcpy (p, (target_big_endian ? be_nop : le_nop), 2); | |
14517 | fragp->fr_var = 2; | |
a19d8eb0 CP |
14518 | } |
14519 | ||
0a9ef439 | 14520 | /* For mips32, a nop is a zero, which we trivially get by doing nothing. */ |
a19d8eb0 CP |
14521 | } |
14522 | ||
252b5132 RH |
14523 | static void |
14524 | md_obj_begin () | |
14525 | { | |
14526 | } | |
14527 | ||
14528 | static void | |
14529 | md_obj_end () | |
14530 | { | |
14531 | /* check for premature end, nesting errors, etc */ | |
14532 | if (cur_proc_ptr) | |
9a41af64 | 14533 | as_warn (_("missing .end at end of assembly")); |
252b5132 RH |
14534 | } |
14535 | ||
14536 | static long | |
14537 | get_number () | |
14538 | { | |
14539 | int negative = 0; | |
14540 | long val = 0; | |
14541 | ||
14542 | if (*input_line_pointer == '-') | |
14543 | { | |
14544 | ++input_line_pointer; | |
14545 | negative = 1; | |
14546 | } | |
3882b010 | 14547 | if (!ISDIGIT (*input_line_pointer)) |
956cd1d6 | 14548 | as_bad (_("expected simple number")); |
252b5132 RH |
14549 | if (input_line_pointer[0] == '0') |
14550 | { | |
14551 | if (input_line_pointer[1] == 'x') | |
14552 | { | |
14553 | input_line_pointer += 2; | |
3882b010 | 14554 | while (ISXDIGIT (*input_line_pointer)) |
252b5132 RH |
14555 | { |
14556 | val <<= 4; | |
14557 | val |= hex_value (*input_line_pointer++); | |
14558 | } | |
14559 | return negative ? -val : val; | |
14560 | } | |
14561 | else | |
14562 | { | |
14563 | ++input_line_pointer; | |
3882b010 | 14564 | while (ISDIGIT (*input_line_pointer)) |
252b5132 RH |
14565 | { |
14566 | val <<= 3; | |
14567 | val |= *input_line_pointer++ - '0'; | |
14568 | } | |
14569 | return negative ? -val : val; | |
14570 | } | |
14571 | } | |
3882b010 | 14572 | if (!ISDIGIT (*input_line_pointer)) |
252b5132 RH |
14573 | { |
14574 | printf (_(" *input_line_pointer == '%c' 0x%02x\n"), | |
14575 | *input_line_pointer, *input_line_pointer); | |
956cd1d6 | 14576 | as_warn (_("invalid number")); |
252b5132 RH |
14577 | return -1; |
14578 | } | |
3882b010 | 14579 | while (ISDIGIT (*input_line_pointer)) |
252b5132 RH |
14580 | { |
14581 | val *= 10; | |
14582 | val += *input_line_pointer++ - '0'; | |
14583 | } | |
14584 | return negative ? -val : val; | |
14585 | } | |
14586 | ||
14587 | /* The .file directive; just like the usual .file directive, but there | |
c5dd6aab DJ |
14588 | is an initial number which is the ECOFF file index. In the non-ECOFF |
14589 | case .file implies DWARF-2. */ | |
14590 | ||
14591 | static void | |
14592 | s_mips_file (x) | |
14593 | int x ATTRIBUTE_UNUSED; | |
14594 | { | |
ecb4347a DJ |
14595 | static int first_file_directive = 0; |
14596 | ||
c5dd6aab DJ |
14597 | if (ECOFF_DEBUGGING) |
14598 | { | |
14599 | get_number (); | |
14600 | s_app_file (0); | |
14601 | } | |
14602 | else | |
ecb4347a DJ |
14603 | { |
14604 | char *filename; | |
14605 | ||
14606 | filename = dwarf2_directive_file (0); | |
14607 | ||
14608 | /* Versions of GCC up to 3.1 start files with a ".file" | |
14609 | directive even for stabs output. Make sure that this | |
14610 | ".file" is handled. Note that you need a version of GCC | |
14611 | after 3.1 in order to support DWARF-2 on MIPS. */ | |
14612 | if (filename != NULL && ! first_file_directive) | |
14613 | { | |
14614 | (void) new_logical_line (filename, -1); | |
14615 | s_app_file_string (filename); | |
14616 | } | |
14617 | first_file_directive = 1; | |
14618 | } | |
c5dd6aab DJ |
14619 | } |
14620 | ||
14621 | /* The .loc directive, implying DWARF-2. */ | |
252b5132 RH |
14622 | |
14623 | static void | |
c5dd6aab | 14624 | s_mips_loc (x) |
43841e91 | 14625 | int x ATTRIBUTE_UNUSED; |
252b5132 | 14626 | { |
c5dd6aab DJ |
14627 | if (!ECOFF_DEBUGGING) |
14628 | dwarf2_directive_loc (0); | |
252b5132 RH |
14629 | } |
14630 | ||
252b5132 RH |
14631 | /* The .end directive. */ |
14632 | ||
14633 | static void | |
14634 | s_mips_end (x) | |
43841e91 | 14635 | int x ATTRIBUTE_UNUSED; |
252b5132 RH |
14636 | { |
14637 | symbolS *p; | |
252b5132 | 14638 | |
7a621144 DJ |
14639 | /* Following functions need their own .frame and .cprestore directives. */ |
14640 | mips_frame_reg_valid = 0; | |
14641 | mips_cprestore_valid = 0; | |
14642 | ||
252b5132 RH |
14643 | if (!is_end_of_line[(unsigned char) *input_line_pointer]) |
14644 | { | |
14645 | p = get_symbol (); | |
14646 | demand_empty_rest_of_line (); | |
14647 | } | |
14648 | else | |
14649 | p = NULL; | |
14650 | ||
14949570 | 14651 | if ((bfd_get_section_flags (stdoutput, now_seg) & SEC_CODE) == 0) |
252b5132 RH |
14652 | as_warn (_(".end not in text section")); |
14653 | ||
14654 | if (!cur_proc_ptr) | |
14655 | { | |
14656 | as_warn (_(".end directive without a preceding .ent directive.")); | |
14657 | demand_empty_rest_of_line (); | |
14658 | return; | |
14659 | } | |
14660 | ||
14661 | if (p != NULL) | |
14662 | { | |
14663 | assert (S_GET_NAME (p)); | |
14664 | if (strcmp (S_GET_NAME (p), S_GET_NAME (cur_proc_ptr->isym))) | |
14665 | as_warn (_(".end symbol does not match .ent symbol.")); | |
ecb4347a DJ |
14666 | |
14667 | if (debug_type == DEBUG_STABS) | |
14668 | stabs_generate_asm_endfunc (S_GET_NAME (p), | |
14669 | S_GET_NAME (p)); | |
252b5132 RH |
14670 | } |
14671 | else | |
14672 | as_warn (_(".end directive missing or unknown symbol")); | |
14673 | ||
ecb4347a DJ |
14674 | #ifdef OBJ_ELF |
14675 | /* Generate a .pdr section. */ | |
14676 | if (OUTPUT_FLAVOR == bfd_target_elf_flavour && ! ECOFF_DEBUGGING) | |
14677 | { | |
14678 | segT saved_seg = now_seg; | |
14679 | subsegT saved_subseg = now_subseg; | |
14680 | valueT dot; | |
14681 | expressionS exp; | |
14682 | char *fragp; | |
252b5132 | 14683 | |
ecb4347a | 14684 | dot = frag_now_fix (); |
252b5132 RH |
14685 | |
14686 | #ifdef md_flush_pending_output | |
ecb4347a | 14687 | md_flush_pending_output (); |
252b5132 RH |
14688 | #endif |
14689 | ||
ecb4347a DJ |
14690 | assert (pdr_seg); |
14691 | subseg_set (pdr_seg, 0); | |
252b5132 | 14692 | |
ecb4347a DJ |
14693 | /* Write the symbol. */ |
14694 | exp.X_op = O_symbol; | |
14695 | exp.X_add_symbol = p; | |
14696 | exp.X_add_number = 0; | |
14697 | emit_expr (&exp, 4); | |
252b5132 | 14698 | |
ecb4347a | 14699 | fragp = frag_more (7 * 4); |
252b5132 | 14700 | |
ecb4347a DJ |
14701 | md_number_to_chars (fragp, (valueT) cur_proc_ptr->reg_mask, 4); |
14702 | md_number_to_chars (fragp + 4, (valueT) cur_proc_ptr->reg_offset, 4); | |
14703 | md_number_to_chars (fragp + 8, (valueT) cur_proc_ptr->fpreg_mask, 4); | |
14704 | md_number_to_chars (fragp + 12, (valueT) cur_proc_ptr->fpreg_offset, 4); | |
14705 | md_number_to_chars (fragp + 16, (valueT) cur_proc_ptr->frame_offset, 4); | |
14706 | md_number_to_chars (fragp + 20, (valueT) cur_proc_ptr->frame_reg, 4); | |
14707 | md_number_to_chars (fragp + 24, (valueT) cur_proc_ptr->pc_reg, 4); | |
252b5132 | 14708 | |
ecb4347a DJ |
14709 | subseg_set (saved_seg, saved_subseg); |
14710 | } | |
14711 | #endif /* OBJ_ELF */ | |
252b5132 RH |
14712 | |
14713 | cur_proc_ptr = NULL; | |
14714 | } | |
14715 | ||
14716 | /* The .aent and .ent directives. */ | |
14717 | ||
14718 | static void | |
14719 | s_mips_ent (aent) | |
14720 | int aent; | |
14721 | { | |
252b5132 | 14722 | symbolS *symbolP; |
252b5132 RH |
14723 | |
14724 | symbolP = get_symbol (); | |
14725 | if (*input_line_pointer == ',') | |
f9419b05 | 14726 | ++input_line_pointer; |
252b5132 | 14727 | SKIP_WHITESPACE (); |
3882b010 | 14728 | if (ISDIGIT (*input_line_pointer) |
d9a62219 | 14729 | || *input_line_pointer == '-') |
874e8986 | 14730 | get_number (); |
252b5132 | 14731 | |
14949570 | 14732 | if ((bfd_get_section_flags (stdoutput, now_seg) & SEC_CODE) == 0) |
252b5132 RH |
14733 | as_warn (_(".ent or .aent not in text section.")); |
14734 | ||
14735 | if (!aent && cur_proc_ptr) | |
9a41af64 | 14736 | as_warn (_("missing .end")); |
252b5132 RH |
14737 | |
14738 | if (!aent) | |
14739 | { | |
7a621144 DJ |
14740 | /* This function needs its own .frame and .cprestore directives. */ |
14741 | mips_frame_reg_valid = 0; | |
14742 | mips_cprestore_valid = 0; | |
14743 | ||
252b5132 RH |
14744 | cur_proc_ptr = &cur_proc; |
14745 | memset (cur_proc_ptr, '\0', sizeof (procS)); | |
14746 | ||
14747 | cur_proc_ptr->isym = symbolP; | |
14748 | ||
49309057 | 14749 | symbol_get_bfdsym (symbolP)->flags |= BSF_FUNCTION; |
252b5132 | 14750 | |
f9419b05 | 14751 | ++numprocs; |
ecb4347a DJ |
14752 | |
14753 | if (debug_type == DEBUG_STABS) | |
14754 | stabs_generate_asm_func (S_GET_NAME (symbolP), | |
14755 | S_GET_NAME (symbolP)); | |
252b5132 RH |
14756 | } |
14757 | ||
14758 | demand_empty_rest_of_line (); | |
14759 | } | |
14760 | ||
14761 | /* The .frame directive. If the mdebug section is present (IRIX 5 native) | |
bdaaa2e1 | 14762 | then ecoff.c (ecoff_directive_frame) is used. For embedded targets, |
252b5132 | 14763 | s_mips_frame is used so that we can set the PDR information correctly. |
bdaaa2e1 | 14764 | We can't use the ecoff routines because they make reference to the ecoff |
252b5132 RH |
14765 | symbol table (in the mdebug section). */ |
14766 | ||
14767 | static void | |
14768 | s_mips_frame (ignore) | |
2b3c5a5d | 14769 | int ignore ATTRIBUTE_UNUSED; |
252b5132 | 14770 | { |
ecb4347a DJ |
14771 | #ifdef OBJ_ELF |
14772 | if (OUTPUT_FLAVOR == bfd_target_elf_flavour && ! ECOFF_DEBUGGING) | |
14773 | { | |
14774 | long val; | |
252b5132 | 14775 | |
ecb4347a DJ |
14776 | if (cur_proc_ptr == (procS *) NULL) |
14777 | { | |
14778 | as_warn (_(".frame outside of .ent")); | |
14779 | demand_empty_rest_of_line (); | |
14780 | return; | |
14781 | } | |
252b5132 | 14782 | |
ecb4347a DJ |
14783 | cur_proc_ptr->frame_reg = tc_get_register (1); |
14784 | ||
14785 | SKIP_WHITESPACE (); | |
14786 | if (*input_line_pointer++ != ',' | |
14787 | || get_absolute_expression_and_terminator (&val) != ',') | |
14788 | { | |
14789 | as_warn (_("Bad .frame directive")); | |
14790 | --input_line_pointer; | |
14791 | demand_empty_rest_of_line (); | |
14792 | return; | |
14793 | } | |
252b5132 | 14794 | |
ecb4347a DJ |
14795 | cur_proc_ptr->frame_offset = val; |
14796 | cur_proc_ptr->pc_reg = tc_get_register (0); | |
252b5132 | 14797 | |
252b5132 | 14798 | demand_empty_rest_of_line (); |
252b5132 | 14799 | } |
ecb4347a DJ |
14800 | else |
14801 | #endif /* OBJ_ELF */ | |
14802 | s_ignore (ignore); | |
252b5132 RH |
14803 | } |
14804 | ||
bdaaa2e1 KH |
14805 | /* The .fmask and .mask directives. If the mdebug section is present |
14806 | (IRIX 5 native) then ecoff.c (ecoff_directive_mask) is used. For | |
252b5132 | 14807 | embedded targets, s_mips_mask is used so that we can set the PDR |
bdaaa2e1 | 14808 | information correctly. We can't use the ecoff routines because they |
252b5132 RH |
14809 | make reference to the ecoff symbol table (in the mdebug section). */ |
14810 | ||
14811 | static void | |
14812 | s_mips_mask (reg_type) | |
14813 | char reg_type; | |
14814 | { | |
ecb4347a DJ |
14815 | #ifdef OBJ_ELF |
14816 | if (OUTPUT_FLAVOR == bfd_target_elf_flavour && ! ECOFF_DEBUGGING) | |
252b5132 | 14817 | { |
ecb4347a | 14818 | long mask, off; |
252b5132 | 14819 | |
ecb4347a DJ |
14820 | if (cur_proc_ptr == (procS *) NULL) |
14821 | { | |
14822 | as_warn (_(".mask/.fmask outside of .ent")); | |
14823 | demand_empty_rest_of_line (); | |
14824 | return; | |
14825 | } | |
252b5132 | 14826 | |
ecb4347a DJ |
14827 | if (get_absolute_expression_and_terminator (&mask) != ',') |
14828 | { | |
14829 | as_warn (_("Bad .mask/.fmask directive")); | |
14830 | --input_line_pointer; | |
14831 | demand_empty_rest_of_line (); | |
14832 | return; | |
14833 | } | |
252b5132 | 14834 | |
ecb4347a DJ |
14835 | off = get_absolute_expression (); |
14836 | ||
14837 | if (reg_type == 'F') | |
14838 | { | |
14839 | cur_proc_ptr->fpreg_mask = mask; | |
14840 | cur_proc_ptr->fpreg_offset = off; | |
14841 | } | |
14842 | else | |
14843 | { | |
14844 | cur_proc_ptr->reg_mask = mask; | |
14845 | cur_proc_ptr->reg_offset = off; | |
14846 | } | |
14847 | ||
14848 | demand_empty_rest_of_line (); | |
252b5132 RH |
14849 | } |
14850 | else | |
ecb4347a DJ |
14851 | #endif /* OBJ_ELF */ |
14852 | s_ignore (reg_type); | |
252b5132 RH |
14853 | } |
14854 | ||
14855 | /* The .loc directive. */ | |
14856 | ||
14857 | #if 0 | |
14858 | static void | |
14859 | s_loc (x) | |
14860 | int x; | |
14861 | { | |
14862 | symbolS *symbolP; | |
14863 | int lineno; | |
14864 | int addroff; | |
14865 | ||
14866 | assert (now_seg == text_section); | |
14867 | ||
14868 | lineno = get_number (); | |
14869 | addroff = frag_now_fix (); | |
14870 | ||
14871 | symbolP = symbol_new ("", N_SLINE, addroff, frag_now); | |
14872 | S_SET_TYPE (symbolP, N_SLINE); | |
14873 | S_SET_OTHER (symbolP, 0); | |
14874 | S_SET_DESC (symbolP, lineno); | |
14875 | symbolP->sy_segment = now_seg; | |
14876 | } | |
14877 | #endif | |
e7af610e | 14878 | |
316f5878 RS |
14879 | /* A table describing all the processors gas knows about. Names are |
14880 | matched in the order listed. | |
e7af610e | 14881 | |
316f5878 RS |
14882 | To ease comparison, please keep this table in the same order as |
14883 | gcc's mips_cpu_info_table[]. */ | |
e972090a NC |
14884 | static const struct mips_cpu_info mips_cpu_info_table[] = |
14885 | { | |
316f5878 RS |
14886 | /* Entries for generic ISAs */ |
14887 | { "mips1", 1, ISA_MIPS1, CPU_R3000 }, | |
14888 | { "mips2", 1, ISA_MIPS2, CPU_R6000 }, | |
14889 | { "mips3", 1, ISA_MIPS3, CPU_R4000 }, | |
14890 | { "mips4", 1, ISA_MIPS4, CPU_R8000 }, | |
14891 | { "mips5", 1, ISA_MIPS5, CPU_MIPS5 }, | |
14892 | { "mips32", 1, ISA_MIPS32, CPU_MIPS32 }, | |
af7ee8bf | 14893 | { "mips32r2", 1, ISA_MIPS32R2, CPU_MIPS32R2 }, |
316f5878 RS |
14894 | { "mips64", 1, ISA_MIPS64, CPU_MIPS64 }, |
14895 | ||
14896 | /* MIPS I */ | |
14897 | { "r3000", 0, ISA_MIPS1, CPU_R3000 }, | |
14898 | { "r2000", 0, ISA_MIPS1, CPU_R3000 }, | |
14899 | { "r3900", 0, ISA_MIPS1, CPU_R3900 }, | |
14900 | ||
14901 | /* MIPS II */ | |
14902 | { "r6000", 0, ISA_MIPS2, CPU_R6000 }, | |
14903 | ||
14904 | /* MIPS III */ | |
14905 | { "r4000", 0, ISA_MIPS3, CPU_R4000 }, | |
14906 | { "r4010", 0, ISA_MIPS2, CPU_R4010 }, | |
14907 | { "vr4100", 0, ISA_MIPS3, CPU_VR4100 }, | |
14908 | { "vr4111", 0, ISA_MIPS3, CPU_R4111 }, | |
60b63b72 RS |
14909 | { "vr4120", 0, ISA_MIPS3, CPU_VR4120 }, |
14910 | { "vr4130", 0, ISA_MIPS3, CPU_VR4120 }, | |
14911 | { "vr4181", 0, ISA_MIPS3, CPU_R4111 }, | |
316f5878 RS |
14912 | { "vr4300", 0, ISA_MIPS3, CPU_R4300 }, |
14913 | { "r4400", 0, ISA_MIPS3, CPU_R4400 }, | |
14914 | { "r4600", 0, ISA_MIPS3, CPU_R4600 }, | |
14915 | { "orion", 0, ISA_MIPS3, CPU_R4600 }, | |
14916 | { "r4650", 0, ISA_MIPS3, CPU_R4650 }, | |
14917 | ||
14918 | /* MIPS IV */ | |
14919 | { "r8000", 0, ISA_MIPS4, CPU_R8000 }, | |
14920 | { "r10000", 0, ISA_MIPS4, CPU_R10000 }, | |
14921 | { "r12000", 0, ISA_MIPS4, CPU_R12000 }, | |
14922 | { "vr5000", 0, ISA_MIPS4, CPU_R5000 }, | |
60b63b72 RS |
14923 | { "vr5400", 0, ISA_MIPS4, CPU_VR5400 }, |
14924 | { "vr5500", 0, ISA_MIPS4, CPU_VR5500 }, | |
316f5878 RS |
14925 | { "rm5200", 0, ISA_MIPS4, CPU_R5000 }, |
14926 | { "rm5230", 0, ISA_MIPS4, CPU_R5000 }, | |
14927 | { "rm5231", 0, ISA_MIPS4, CPU_R5000 }, | |
14928 | { "rm5261", 0, ISA_MIPS4, CPU_R5000 }, | |
14929 | { "rm5721", 0, ISA_MIPS4, CPU_R5000 }, | |
14930 | { "r7000", 0, ISA_MIPS4, CPU_R5000 }, | |
14931 | ||
14932 | /* MIPS 32 */ | |
14933 | { "4kc", 0, ISA_MIPS32, CPU_MIPS32, }, | |
14934 | { "4km", 0, ISA_MIPS32, CPU_MIPS32 }, | |
14935 | { "4kp", 0, ISA_MIPS32, CPU_MIPS32 }, | |
e7af610e | 14936 | |
316f5878 RS |
14937 | /* MIPS 64 */ |
14938 | { "5kc", 0, ISA_MIPS64, CPU_MIPS64 }, | |
14939 | { "20kc", 0, ISA_MIPS64, CPU_MIPS64 }, | |
e7af610e | 14940 | |
c7a23324 | 14941 | /* Broadcom SB-1 CPU core */ |
316f5878 | 14942 | { "sb1", 0, ISA_MIPS64, CPU_SB1 }, |
e7af610e | 14943 | |
316f5878 RS |
14944 | /* End marker */ |
14945 | { NULL, 0, 0, 0 } | |
14946 | }; | |
e7af610e | 14947 | |
84ea6cf2 | 14948 | |
316f5878 RS |
14949 | /* Return true if GIVEN is the same as CANONICAL, or if it is CANONICAL |
14950 | with a final "000" replaced by "k". Ignore case. | |
e7af610e | 14951 | |
316f5878 | 14952 | Note: this function is shared between GCC and GAS. */ |
c6c98b38 | 14953 | |
b34976b6 | 14954 | static bfd_boolean |
316f5878 RS |
14955 | mips_strict_matching_cpu_name_p (canonical, given) |
14956 | const char *canonical, *given; | |
14957 | { | |
14958 | while (*given != 0 && TOLOWER (*given) == TOLOWER (*canonical)) | |
14959 | given++, canonical++; | |
14960 | ||
14961 | return ((*given == 0 && *canonical == 0) | |
14962 | || (strcmp (canonical, "000") == 0 && strcasecmp (given, "k") == 0)); | |
14963 | } | |
14964 | ||
14965 | ||
14966 | /* Return true if GIVEN matches CANONICAL, where GIVEN is a user-supplied | |
14967 | CPU name. We've traditionally allowed a lot of variation here. | |
14968 | ||
14969 | Note: this function is shared between GCC and GAS. */ | |
14970 | ||
b34976b6 | 14971 | static bfd_boolean |
316f5878 RS |
14972 | mips_matching_cpu_name_p (canonical, given) |
14973 | const char *canonical, *given; | |
14974 | { | |
14975 | /* First see if the name matches exactly, or with a final "000" | |
14976 | turned into "k". */ | |
14977 | if (mips_strict_matching_cpu_name_p (canonical, given)) | |
b34976b6 | 14978 | return TRUE; |
316f5878 RS |
14979 | |
14980 | /* If not, try comparing based on numerical designation alone. | |
14981 | See if GIVEN is an unadorned number, or 'r' followed by a number. */ | |
14982 | if (TOLOWER (*given) == 'r') | |
14983 | given++; | |
14984 | if (!ISDIGIT (*given)) | |
b34976b6 | 14985 | return FALSE; |
316f5878 RS |
14986 | |
14987 | /* Skip over some well-known prefixes in the canonical name, | |
14988 | hoping to find a number there too. */ | |
14989 | if (TOLOWER (canonical[0]) == 'v' && TOLOWER (canonical[1]) == 'r') | |
14990 | canonical += 2; | |
14991 | else if (TOLOWER (canonical[0]) == 'r' && TOLOWER (canonical[1]) == 'm') | |
14992 | canonical += 2; | |
14993 | else if (TOLOWER (canonical[0]) == 'r') | |
14994 | canonical += 1; | |
14995 | ||
14996 | return mips_strict_matching_cpu_name_p (canonical, given); | |
14997 | } | |
14998 | ||
14999 | ||
15000 | /* Parse an option that takes the name of a processor as its argument. | |
15001 | OPTION is the name of the option and CPU_STRING is the argument. | |
15002 | Return the corresponding processor enumeration if the CPU_STRING is | |
15003 | recognized, otherwise report an error and return null. | |
15004 | ||
15005 | A similar function exists in GCC. */ | |
e7af610e NC |
15006 | |
15007 | static const struct mips_cpu_info * | |
316f5878 RS |
15008 | mips_parse_cpu (option, cpu_string) |
15009 | const char *option, *cpu_string; | |
e7af610e | 15010 | { |
316f5878 | 15011 | const struct mips_cpu_info *p; |
e7af610e | 15012 | |
316f5878 RS |
15013 | /* 'from-abi' selects the most compatible architecture for the given |
15014 | ABI: MIPS I for 32-bit ABIs and MIPS III for 64-bit ABIs. For the | |
15015 | EABIs, we have to decide whether we're using the 32-bit or 64-bit | |
15016 | version. Look first at the -mgp options, if given, otherwise base | |
15017 | the choice on MIPS_DEFAULT_64BIT. | |
e7af610e | 15018 | |
316f5878 RS |
15019 | Treat NO_ABI like the EABIs. One reason to do this is that the |
15020 | plain 'mips' and 'mips64' configs have 'from-abi' as their default | |
15021 | architecture. This code picks MIPS I for 'mips' and MIPS III for | |
15022 | 'mips64', just as we did in the days before 'from-abi'. */ | |
15023 | if (strcasecmp (cpu_string, "from-abi") == 0) | |
15024 | { | |
15025 | if (ABI_NEEDS_32BIT_REGS (mips_abi)) | |
15026 | return mips_cpu_info_from_isa (ISA_MIPS1); | |
15027 | ||
15028 | if (ABI_NEEDS_64BIT_REGS (mips_abi)) | |
15029 | return mips_cpu_info_from_isa (ISA_MIPS3); | |
15030 | ||
15031 | if (file_mips_gp32 >= 0) | |
15032 | return mips_cpu_info_from_isa (file_mips_gp32 ? ISA_MIPS1 : ISA_MIPS3); | |
15033 | ||
15034 | return mips_cpu_info_from_isa (MIPS_DEFAULT_64BIT | |
15035 | ? ISA_MIPS3 | |
15036 | : ISA_MIPS1); | |
15037 | } | |
15038 | ||
15039 | /* 'default' has traditionally been a no-op. Probably not very useful. */ | |
15040 | if (strcasecmp (cpu_string, "default") == 0) | |
15041 | return 0; | |
15042 | ||
15043 | for (p = mips_cpu_info_table; p->name != 0; p++) | |
15044 | if (mips_matching_cpu_name_p (p->name, cpu_string)) | |
15045 | return p; | |
15046 | ||
15047 | as_bad ("Bad value (%s) for %s", cpu_string, option); | |
15048 | return 0; | |
e7af610e NC |
15049 | } |
15050 | ||
316f5878 RS |
15051 | /* Return the canonical processor information for ISA (a member of the |
15052 | ISA_MIPS* enumeration). */ | |
15053 | ||
e7af610e NC |
15054 | static const struct mips_cpu_info * |
15055 | mips_cpu_info_from_isa (isa) | |
15056 | int isa; | |
15057 | { | |
15058 | int i; | |
15059 | ||
15060 | for (i = 0; mips_cpu_info_table[i].name != NULL; i++) | |
15061 | if (mips_cpu_info_table[i].is_isa | |
316f5878 | 15062 | && isa == mips_cpu_info_table[i].isa) |
e7af610e NC |
15063 | return (&mips_cpu_info_table[i]); |
15064 | ||
e972090a | 15065 | return NULL; |
e7af610e | 15066 | } |
316f5878 RS |
15067 | \f |
15068 | static void | |
15069 | show (stream, string, col_p, first_p) | |
15070 | FILE *stream; | |
15071 | const char *string; | |
15072 | int *col_p; | |
15073 | int *first_p; | |
15074 | { | |
15075 | if (*first_p) | |
15076 | { | |
15077 | fprintf (stream, "%24s", ""); | |
15078 | *col_p = 24; | |
15079 | } | |
15080 | else | |
15081 | { | |
15082 | fprintf (stream, ", "); | |
15083 | *col_p += 2; | |
15084 | } | |
e7af610e | 15085 | |
316f5878 RS |
15086 | if (*col_p + strlen (string) > 72) |
15087 | { | |
15088 | fprintf (stream, "\n%24s", ""); | |
15089 | *col_p = 24; | |
15090 | } | |
15091 | ||
15092 | fprintf (stream, "%s", string); | |
15093 | *col_p += strlen (string); | |
15094 | ||
15095 | *first_p = 0; | |
15096 | } | |
15097 | ||
15098 | void | |
15099 | md_show_usage (stream) | |
15100 | FILE *stream; | |
e7af610e | 15101 | { |
316f5878 RS |
15102 | int column, first; |
15103 | size_t i; | |
15104 | ||
15105 | fprintf (stream, _("\ | |
15106 | MIPS options:\n\ | |
15107 | -membedded-pic generate embedded position independent code\n\ | |
15108 | -EB generate big endian output\n\ | |
15109 | -EL generate little endian output\n\ | |
15110 | -g, -g2 do not remove unneeded NOPs or swap branches\n\ | |
15111 | -G NUM allow referencing objects up to NUM bytes\n\ | |
15112 | implicitly with the gp register [default 8]\n")); | |
15113 | fprintf (stream, _("\ | |
15114 | -mips1 generate MIPS ISA I instructions\n\ | |
15115 | -mips2 generate MIPS ISA II instructions\n\ | |
15116 | -mips3 generate MIPS ISA III instructions\n\ | |
15117 | -mips4 generate MIPS ISA IV instructions\n\ | |
15118 | -mips5 generate MIPS ISA V instructions\n\ | |
15119 | -mips32 generate MIPS32 ISA instructions\n\ | |
af7ee8bf | 15120 | -mips32r2 generate MIPS32 release 2 ISA instructions\n\ |
316f5878 RS |
15121 | -mips64 generate MIPS64 ISA instructions\n\ |
15122 | -march=CPU/-mtune=CPU generate code/schedule for CPU, where CPU is one of:\n")); | |
15123 | ||
15124 | first = 1; | |
e7af610e NC |
15125 | |
15126 | for (i = 0; mips_cpu_info_table[i].name != NULL; i++) | |
316f5878 RS |
15127 | show (stream, mips_cpu_info_table[i].name, &column, &first); |
15128 | show (stream, "from-abi", &column, &first); | |
15129 | fputc ('\n', stream); | |
e7af610e | 15130 | |
316f5878 RS |
15131 | fprintf (stream, _("\ |
15132 | -mCPU equivalent to -march=CPU -mtune=CPU. Deprecated.\n\ | |
15133 | -no-mCPU don't generate code specific to CPU.\n\ | |
15134 | For -mCPU and -no-mCPU, CPU must be one of:\n")); | |
15135 | ||
15136 | first = 1; | |
15137 | ||
15138 | show (stream, "3900", &column, &first); | |
15139 | show (stream, "4010", &column, &first); | |
15140 | show (stream, "4100", &column, &first); | |
15141 | show (stream, "4650", &column, &first); | |
15142 | fputc ('\n', stream); | |
15143 | ||
15144 | fprintf (stream, _("\ | |
15145 | -mips16 generate mips16 instructions\n\ | |
15146 | -no-mips16 do not generate mips16 instructions\n")); | |
15147 | fprintf (stream, _("\ | |
15148 | -mgp32 use 32-bit GPRs, regardless of the chosen ISA\n\ | |
15149 | -mfp32 use 32-bit FPRs, regardless of the chosen ISA\n\ | |
15150 | -O0 remove unneeded NOPs, do not swap branches\n\ | |
15151 | -O remove unneeded NOPs and swap branches\n\ | |
15152 | -n warn about NOPs generated from macros\n\ | |
15153 | --[no-]construct-floats [dis]allow floating point values to be constructed\n\ | |
15154 | --trap, --no-break trap exception on div by 0 and mult overflow\n\ | |
15155 | --break, --no-trap break exception on div by 0 and mult overflow\n")); | |
15156 | #ifdef OBJ_ELF | |
15157 | fprintf (stream, _("\ | |
15158 | -KPIC, -call_shared generate SVR4 position independent code\n\ | |
15159 | -non_shared do not generate position independent code\n\ | |
15160 | -xgot assume a 32 bit GOT\n\ | |
15161 | -mabi=ABI create ABI conformant object file for:\n")); | |
15162 | ||
15163 | first = 1; | |
15164 | ||
15165 | show (stream, "32", &column, &first); | |
15166 | show (stream, "o64", &column, &first); | |
15167 | show (stream, "n32", &column, &first); | |
15168 | show (stream, "64", &column, &first); | |
15169 | show (stream, "eabi", &column, &first); | |
15170 | ||
15171 | fputc ('\n', stream); | |
15172 | ||
15173 | fprintf (stream, _("\ | |
15174 | -32 create o32 ABI object file (default)\n\ | |
15175 | -n32 create n32 ABI object file\n\ | |
15176 | -64 create 64 ABI object file\n")); | |
15177 | #endif | |
e7af610e | 15178 | } |
14e777e0 KB |
15179 | |
15180 | enum dwarf2_format | |
15181 | mips_dwarf2_format () | |
15182 | { | |
15183 | if (mips_abi == N64_ABI) | |
1de5b6a1 AO |
15184 | { |
15185 | #ifdef TE_IRIX | |
15186 | return dwarf2_format_64bit_irix; | |
15187 | #else | |
15188 | return dwarf2_format_64bit; | |
15189 | #endif | |
15190 | } | |
14e777e0 KB |
15191 | else |
15192 | return dwarf2_format_32bit; | |
15193 | } |