Commit | Line | Data |
---|---|---|
252b5132 | 1 | /* tc-arc.c -- Assembler for the ARC |
6f2750fe | 2 | Copyright (C) 1994-2016 Free Software Foundation, Inc. |
886a2506 NC |
3 | |
4 | Contributor: Claudiu Zissulescu <claziss@synopsys.com> | |
252b5132 RH |
5 | |
6 | This file is part of GAS, the GNU Assembler. | |
7 | ||
8 | GAS is free software; you can redistribute it and/or modify | |
9 | it under the terms of the GNU General Public License as published by | |
ec2655a6 | 10 | the Free Software Foundation; either version 3, or (at your option) |
252b5132 RH |
11 | any later version. |
12 | ||
13 | GAS is distributed in the hope that it will be useful, | |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
19203624 | 19 | along with GAS; see the file COPYING. If not, write to the Free |
4b4da160 NC |
20 | Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA |
21 | 02110-1301, USA. */ | |
252b5132 | 22 | |
252b5132 | 23 | #include "as.h" |
886a2506 | 24 | #include "subsegs.h" |
a161fe53 | 25 | #include "struc-symbol.h" |
886a2506 | 26 | #include "dwarf2dbg.h" |
726c18e1 | 27 | #include "dw2gencfi.h" |
3882b010 | 28 | #include "safe-ctype.h" |
886a2506 | 29 | |
252b5132 RH |
30 | #include "opcode/arc.h" |
31 | #include "elf/arc.h" | |
b99747ae | 32 | #include "../opcodes/arc-ext.h" |
252b5132 | 33 | |
886a2506 | 34 | /* Defines section. */ |
0d2bcfaf | 35 | |
886a2506 NC |
36 | #define MAX_INSN_FIXUPS 2 |
37 | #define MAX_CONSTR_STR 20 | |
4670103e | 38 | #define FRAG_MAX_GROWTH 8 |
0d2bcfaf | 39 | |
886a2506 NC |
40 | #ifdef DEBUG |
41 | # define pr_debug(fmt, args...) fprintf (stderr, fmt, ##args) | |
42 | #else | |
43 | # define pr_debug(fmt, args...) | |
44 | #endif | |
45 | ||
46 | #define MAJOR_OPCODE(x) (((x) & 0xF8000000) >> 27) | |
47 | #define SUB_OPCODE(x) (((x) & 0x003F0000) >> 16) | |
4670103e | 48 | #define LP_INSN(x) ((MAJOR_OPCODE (x) == 0x4) && \ |
886a2506 NC |
49 | (SUB_OPCODE (x) == 0x28)) |
50 | ||
51 | /* Equal to MAX_PRECISION in atof-ieee.c. */ | |
52 | #define MAX_LITTLENUMS 6 | |
53 | ||
4670103e CZ |
54 | /* Enum used to enumerate the relaxable ins operands. */ |
55 | enum rlx_operand_type | |
56 | { | |
57 | EMPTY = 0, | |
58 | REGISTER, | |
59 | REGISTER_S, /* Register for short instruction(s). */ | |
60 | REGISTER_NO_GP, /* Is a register but not gp register specifically. */ | |
61 | REGISTER_DUP, /* Duplication of previous operand of type register. */ | |
62 | IMMEDIATE, | |
63 | BRACKET | |
64 | }; | |
65 | ||
66 | enum arc_rlx_types | |
67 | { | |
68 | ARC_RLX_NONE = 0, | |
69 | ARC_RLX_BL_S, | |
70 | ARC_RLX_BL, | |
71 | ARC_RLX_B_S, | |
72 | ARC_RLX_B, | |
73 | ARC_RLX_ADD_U3, | |
74 | ARC_RLX_ADD_U6, | |
75 | ARC_RLX_ADD_LIMM, | |
76 | ARC_RLX_LD_U7, | |
77 | ARC_RLX_LD_S9, | |
78 | ARC_RLX_LD_LIMM, | |
79 | ARC_RLX_MOV_U8, | |
80 | ARC_RLX_MOV_S12, | |
81 | ARC_RLX_MOV_LIMM, | |
82 | ARC_RLX_SUB_U3, | |
83 | ARC_RLX_SUB_U6, | |
84 | ARC_RLX_SUB_LIMM, | |
85 | ARC_RLX_MPY_U6, | |
86 | ARC_RLX_MPY_LIMM, | |
87 | ARC_RLX_MOV_RU6, | |
88 | ARC_RLX_MOV_RLIMM, | |
89 | ARC_RLX_ADD_RRU6, | |
90 | ARC_RLX_ADD_RRLIMM, | |
91 | }; | |
92 | ||
886a2506 NC |
93 | /* Macros section. */ |
94 | ||
95 | #define regno(x) ((x) & 0x3F) | |
96 | #define is_ir_num(x) (((x) & ~0x3F) == 0) | |
8ddf6b2a CZ |
97 | #define is_code_density_p(sc) (((sc) == CD1 || (sc) == CD2)) |
98 | #define is_spfp_p(op) (((sc) == SPX)) | |
99 | #define is_dpfp_p(op) (((sc) == DPX)) | |
100 | #define is_fpuda_p(op) (((sc) == DPA)) | |
886a2506 NC |
101 | #define is_br_jmp_insn_p(op) (((op)->class == BRANCH || (op)->class == JUMP)) |
102 | #define is_kernel_insn_p(op) (((op)->class == KERNEL)) | |
0d2bcfaf | 103 | |
886a2506 NC |
104 | /* Generic assembler global variables which must be defined by all |
105 | targets. */ | |
0d2bcfaf | 106 | |
886a2506 | 107 | /* Characters which always start a comment. */ |
252b5132 RH |
108 | const char comment_chars[] = "#;"; |
109 | ||
886a2506 | 110 | /* Characters which start a comment at the beginning of a line. */ |
252b5132 RH |
111 | const char line_comment_chars[] = "#"; |
112 | ||
886a2506 NC |
113 | /* Characters which may be used to separate multiple commands on a |
114 | single line. */ | |
115 | const char line_separator_chars[] = "`"; | |
252b5132 | 116 | |
886a2506 NC |
117 | /* Characters which are used to indicate an exponent in a floating |
118 | point number. */ | |
252b5132 RH |
119 | const char EXP_CHARS[] = "eE"; |
120 | ||
bcee8eb8 AM |
121 | /* Chars that mean this number is a floating point constant |
122 | As in 0f12.456 or 0d1.2345e12. */ | |
252b5132 RH |
123 | const char FLT_CHARS[] = "rRsSfFdD"; |
124 | ||
125 | /* Byte order. */ | |
126 | extern int target_big_endian; | |
127 | const char *arc_target_format = DEFAULT_TARGET_FORMAT; | |
128 | static int byte_order = DEFAULT_BYTE_ORDER; | |
129 | ||
b99747ae CZ |
130 | /* Arc extension section. */ |
131 | static segT arcext_section; | |
132 | ||
4670103e CZ |
133 | /* By default relaxation is disabled. */ |
134 | static int relaxation_state = 0; | |
135 | ||
886a2506 | 136 | extern int arc_get_mach (char *); |
0d2bcfaf | 137 | |
4670103e | 138 | /* Forward declarations. */ |
886a2506 NC |
139 | static void arc_lcomm (int); |
140 | static void arc_option (int); | |
141 | static void arc_extra_reloc (int); | |
b99747ae | 142 | static void arc_extinsn (int); |
f36e33da | 143 | static void arc_extcorereg (int); |
4670103e | 144 | |
886a2506 | 145 | const pseudo_typeS md_pseudo_table[] = |
6f4b1afc CM |
146 | { |
147 | /* Make sure that .word is 32 bits. */ | |
148 | { "word", cons, 4 }, | |
886a2506 | 149 | |
6f4b1afc CM |
150 | { "align", s_align_bytes, 0 }, /* Defaulting is invalid (0). */ |
151 | { "lcomm", arc_lcomm, 0 }, | |
152 | { "lcommon", arc_lcomm, 0 }, | |
153 | { "cpu", arc_option, 0 }, | |
252b5132 | 154 | |
f36e33da CZ |
155 | { "extinstruction", arc_extinsn, 0 }, |
156 | { "extcoreregister", arc_extcorereg, EXT_CORE_REGISTER }, | |
157 | { "extauxregister", arc_extcorereg, EXT_AUX_REGISTER }, | |
158 | { "extcondcode", arc_extcorereg, EXT_COND_CODE }, | |
b99747ae | 159 | |
6f4b1afc CM |
160 | { "tls_gd_ld", arc_extra_reloc, BFD_RELOC_ARC_TLS_GD_LD }, |
161 | { "tls_gd_call", arc_extra_reloc, BFD_RELOC_ARC_TLS_GD_CALL }, | |
886a2506 | 162 | |
6f4b1afc CM |
163 | { NULL, NULL, 0 } |
164 | }; | |
252b5132 | 165 | |
252b5132 | 166 | const char *md_shortopts = ""; |
ea1562b3 NC |
167 | |
168 | enum options | |
6f4b1afc CM |
169 | { |
170 | OPTION_EB = OPTION_MD_BASE, | |
171 | OPTION_EL, | |
172 | ||
173 | OPTION_ARC600, | |
174 | OPTION_ARC601, | |
175 | OPTION_ARC700, | |
176 | OPTION_ARCEM, | |
177 | OPTION_ARCHS, | |
178 | ||
179 | OPTION_MCPU, | |
180 | OPTION_CD, | |
4670103e | 181 | OPTION_RELAX, |
6f4b1afc CM |
182 | |
183 | /* The following options are deprecated and provided here only for | |
184 | compatibility reasons. */ | |
185 | OPTION_USER_MODE, | |
186 | OPTION_LD_EXT_MASK, | |
187 | OPTION_SWAP, | |
188 | OPTION_NORM, | |
189 | OPTION_BARREL_SHIFT, | |
190 | OPTION_MIN_MAX, | |
191 | OPTION_NO_MPY, | |
192 | OPTION_EA, | |
193 | OPTION_MUL64, | |
194 | OPTION_SIMD, | |
195 | OPTION_SPFP, | |
196 | OPTION_DPFP, | |
197 | OPTION_XMAC_D16, | |
198 | OPTION_XMAC_24, | |
199 | OPTION_DSP_PACKA, | |
200 | OPTION_CRC, | |
201 | OPTION_DVBF, | |
202 | OPTION_TELEPHONY, | |
203 | OPTION_XYMEMORY, | |
204 | OPTION_LOCK, | |
205 | OPTION_SWAPE, | |
206 | OPTION_RTSC, | |
207 | OPTION_FPUDA | |
208 | }; | |
ea1562b3 NC |
209 | |
210 | struct option md_longopts[] = | |
6f4b1afc CM |
211 | { |
212 | { "EB", no_argument, NULL, OPTION_EB }, | |
213 | { "EL", no_argument, NULL, OPTION_EL }, | |
214 | { "mcpu", required_argument, NULL, OPTION_MCPU }, | |
215 | { "mA6", no_argument, NULL, OPTION_ARC600 }, | |
24b368f8 CZ |
216 | { "mARC600", no_argument, NULL, OPTION_ARC600 }, |
217 | { "mARC601", no_argument, NULL, OPTION_ARC601 }, | |
218 | { "mARC700", no_argument, NULL, OPTION_ARC700 }, | |
6f4b1afc CM |
219 | { "mA7", no_argument, NULL, OPTION_ARC700 }, |
220 | { "mEM", no_argument, NULL, OPTION_ARCEM }, | |
221 | { "mHS", no_argument, NULL, OPTION_ARCHS }, | |
222 | { "mcode-density", no_argument, NULL, OPTION_CD }, | |
4670103e | 223 | { "mrelax", no_argument, NULL, OPTION_RELAX }, |
6f4b1afc CM |
224 | |
225 | /* The following options are deprecated and provided here only for | |
226 | compatibility reasons. */ | |
227 | { "mav2em", no_argument, NULL, OPTION_ARCEM }, | |
228 | { "mav2hs", no_argument, NULL, OPTION_ARCHS }, | |
229 | { "muser-mode-only", no_argument, NULL, OPTION_USER_MODE }, | |
230 | { "mld-extension-reg-mask", required_argument, NULL, OPTION_LD_EXT_MASK }, | |
231 | { "mswap", no_argument, NULL, OPTION_SWAP }, | |
232 | { "mnorm", no_argument, NULL, OPTION_NORM }, | |
233 | { "mbarrel-shifter", no_argument, NULL, OPTION_BARREL_SHIFT }, | |
234 | { "mbarrel_shifter", no_argument, NULL, OPTION_BARREL_SHIFT }, | |
235 | { "mmin-max", no_argument, NULL, OPTION_MIN_MAX }, | |
236 | { "mmin_max", no_argument, NULL, OPTION_MIN_MAX }, | |
237 | { "mno-mpy", no_argument, NULL, OPTION_NO_MPY }, | |
238 | { "mea", no_argument, NULL, OPTION_EA }, | |
239 | { "mEA", no_argument, NULL, OPTION_EA }, | |
240 | { "mmul64", no_argument, NULL, OPTION_MUL64 }, | |
241 | { "msimd", no_argument, NULL, OPTION_SIMD}, | |
242 | { "mspfp", no_argument, NULL, OPTION_SPFP}, | |
243 | { "mspfp-compact", no_argument, NULL, OPTION_SPFP}, | |
244 | { "mspfp_compact", no_argument, NULL, OPTION_SPFP}, | |
245 | { "mspfp-fast", no_argument, NULL, OPTION_SPFP}, | |
246 | { "mspfp_fast", no_argument, NULL, OPTION_SPFP}, | |
247 | { "mdpfp", no_argument, NULL, OPTION_DPFP}, | |
248 | { "mdpfp-compact", no_argument, NULL, OPTION_DPFP}, | |
249 | { "mdpfp_compact", no_argument, NULL, OPTION_DPFP}, | |
250 | { "mdpfp-fast", no_argument, NULL, OPTION_DPFP}, | |
251 | { "mdpfp_fast", no_argument, NULL, OPTION_DPFP}, | |
252 | { "mmac-d16", no_argument, NULL, OPTION_XMAC_D16}, | |
253 | { "mmac_d16", no_argument, NULL, OPTION_XMAC_D16}, | |
254 | { "mmac-24", no_argument, NULL, OPTION_XMAC_24}, | |
255 | { "mmac_24", no_argument, NULL, OPTION_XMAC_24}, | |
256 | { "mdsp-packa", no_argument, NULL, OPTION_DSP_PACKA}, | |
257 | { "mdsp_packa", no_argument, NULL, OPTION_DSP_PACKA}, | |
258 | { "mcrc", no_argument, NULL, OPTION_CRC}, | |
259 | { "mdvbf", no_argument, NULL, OPTION_DVBF}, | |
260 | { "mtelephony", no_argument, NULL, OPTION_TELEPHONY}, | |
261 | { "mxy", no_argument, NULL, OPTION_XYMEMORY}, | |
262 | { "mlock", no_argument, NULL, OPTION_LOCK}, | |
263 | { "mswape", no_argument, NULL, OPTION_SWAPE}, | |
264 | { "mrtsc", no_argument, NULL, OPTION_RTSC}, | |
265 | { "mfpuda", no_argument, NULL, OPTION_FPUDA}, | |
266 | ||
267 | { NULL, no_argument, NULL, 0 } | |
268 | }; | |
252b5132 | 269 | |
886a2506 | 270 | size_t md_longopts_size = sizeof (md_longopts); |
0d2bcfaf | 271 | |
886a2506 | 272 | /* Local data and data types. */ |
252b5132 | 273 | |
886a2506 NC |
274 | /* Used since new relocation types are introduced in this |
275 | file (DUMMY_RELOC_LITUSE_*). */ | |
276 | typedef int extended_bfd_reloc_code_real_type; | |
252b5132 | 277 | |
886a2506 | 278 | struct arc_fixup |
252b5132 | 279 | { |
886a2506 | 280 | expressionS exp; |
252b5132 | 281 | |
886a2506 | 282 | extended_bfd_reloc_code_real_type reloc; |
252b5132 | 283 | |
886a2506 NC |
284 | /* index into arc_operands. */ |
285 | unsigned int opindex; | |
252b5132 | 286 | |
886a2506 NC |
287 | /* PC-relative, used by internals fixups. */ |
288 | unsigned char pcrel; | |
252b5132 | 289 | |
886a2506 NC |
290 | /* TRUE if this fixup is for LIMM operand. */ |
291 | bfd_boolean islong; | |
292 | }; | |
252b5132 | 293 | |
886a2506 NC |
294 | struct arc_insn |
295 | { | |
296 | unsigned int insn; | |
297 | int nfixups; | |
298 | struct arc_fixup fixups[MAX_INSN_FIXUPS]; | |
299 | long limm; | |
300 | bfd_boolean short_insn; /* Boolean value: TRUE if current insn is | |
301 | short. */ | |
302 | bfd_boolean has_limm; /* Boolean value: TRUE if limm field is | |
303 | valid. */ | |
4670103e CZ |
304 | bfd_boolean relax; /* Boolean value: TRUE if needs |
305 | relaxation. */ | |
886a2506 | 306 | }; |
ea1562b3 | 307 | |
886a2506 NC |
308 | /* Structure to hold any last two instructions. */ |
309 | static struct arc_last_insn | |
252b5132 | 310 | { |
886a2506 NC |
311 | /* Saved instruction opcode. */ |
312 | const struct arc_opcode *opcode; | |
252b5132 | 313 | |
886a2506 NC |
314 | /* Boolean value: TRUE if current insn is short. */ |
315 | bfd_boolean has_limm; | |
252b5132 | 316 | |
886a2506 NC |
317 | /* Boolean value: TRUE if current insn has delay slot. */ |
318 | bfd_boolean has_delay_slot; | |
319 | } arc_last_insns[2]; | |
252b5132 | 320 | |
b99747ae CZ |
321 | /* Extension instruction suffix classes. */ |
322 | typedef struct | |
323 | { | |
324 | const char *name; | |
325 | int len; | |
326 | int class; | |
327 | } attributes_t; | |
328 | ||
329 | static const attributes_t suffixclass[] = | |
330 | { | |
331 | { "SUFFIX_FLAG", 11, ARC_SUFFIX_FLAG }, | |
332 | { "SUFFIX_COND", 11, ARC_SUFFIX_COND }, | |
333 | { "SUFFIX_NONE", 11, ARC_SUFFIX_NONE } | |
334 | }; | |
335 | ||
336 | /* Extension instruction syntax classes. */ | |
337 | static const attributes_t syntaxclass[] = | |
338 | { | |
339 | { "SYNTAX_3OP", 10, ARC_SYNTAX_3OP }, | |
945e0f82 CZ |
340 | { "SYNTAX_2OP", 10, ARC_SYNTAX_2OP }, |
341 | { "SYNTAX_1OP", 10, ARC_SYNTAX_1OP }, | |
342 | { "SYNTAX_NOP", 10, ARC_SYNTAX_NOP } | |
b99747ae CZ |
343 | }; |
344 | ||
345 | /* Extension instruction syntax classes modifiers. */ | |
346 | static const attributes_t syntaxclassmod[] = | |
347 | { | |
348 | { "OP1_IMM_IMPLIED" , 15, ARC_OP1_IMM_IMPLIED }, | |
349 | { "OP1_MUST_BE_IMM" , 15, ARC_OP1_MUST_BE_IMM } | |
350 | }; | |
351 | ||
f36e33da CZ |
352 | /* Extension register type. */ |
353 | typedef struct | |
354 | { | |
355 | char *name; | |
356 | int number; | |
357 | int imode; | |
358 | } extRegister_t; | |
359 | ||
360 | /* A structure to hold the additional conditional codes. */ | |
361 | static struct | |
362 | { | |
363 | struct arc_flag_operand *arc_ext_condcode; | |
364 | int size; | |
365 | } ext_condcode = { NULL, 0 }; | |
366 | ||
da5be039 AB |
367 | /* Structure to hold an entry in ARC_OPCODE_HASH. */ |
368 | struct arc_opcode_hash_entry | |
369 | { | |
370 | /* The number of pointers in the OPCODE list. */ | |
371 | size_t count; | |
372 | ||
373 | /* Points to a list of opcode pointers. */ | |
374 | const struct arc_opcode **opcode; | |
375 | }; | |
376 | ||
1328504b AB |
377 | /* Structure used for iterating through an arc_opcode_hash_entry. */ |
378 | struct arc_opcode_hash_entry_iterator | |
379 | { | |
380 | /* Index into the OPCODE element of the arc_opcode_hash_entry. */ | |
381 | size_t index; | |
382 | ||
383 | /* The specific ARC_OPCODE from the ARC_OPCODES table that was last | |
384 | returned by this iterator. */ | |
385 | const struct arc_opcode *opcode; | |
386 | }; | |
387 | ||
4670103e CZ |
388 | /* Forward declaration. */ |
389 | static void assemble_insn | |
390 | (const struct arc_opcode *, const expressionS *, int, | |
391 | const struct arc_flags *, int, struct arc_insn *); | |
392 | ||
886a2506 | 393 | /* The cpu for which we are generating code. */ |
24740d83 AB |
394 | static unsigned arc_target; |
395 | static const char *arc_target_name; | |
396 | static unsigned arc_features; | |
252b5132 | 397 | |
886a2506 | 398 | /* The default architecture. */ |
24740d83 | 399 | static int arc_mach_type; |
252b5132 | 400 | |
1adc8a9a CZ |
401 | /* TRUE if the cpu type has been explicitly specified. */ |
402 | static bfd_boolean mach_type_specified_p = FALSE; | |
0d2bcfaf | 403 | |
886a2506 NC |
404 | /* The hash table of instruction opcodes. */ |
405 | static struct hash_control *arc_opcode_hash; | |
0d2bcfaf | 406 | |
886a2506 NC |
407 | /* The hash table of register symbols. */ |
408 | static struct hash_control *arc_reg_hash; | |
252b5132 | 409 | |
f36e33da CZ |
410 | /* The hash table of aux register symbols. */ |
411 | static struct hash_control *arc_aux_hash; | |
412 | ||
886a2506 NC |
413 | /* A table of CPU names and opcode sets. */ |
414 | static const struct cpu_type | |
415 | { | |
416 | const char *name; | |
417 | unsigned flags; | |
418 | int mach; | |
419 | unsigned eflags; | |
420 | unsigned features; | |
252b5132 | 421 | } |
886a2506 | 422 | cpu_types[] = |
252b5132 | 423 | { |
886a2506 NC |
424 | { "arc600", ARC_OPCODE_ARC600, bfd_mach_arc_arc600, |
425 | E_ARC_MACH_ARC600, 0x00}, | |
426 | { "arc700", ARC_OPCODE_ARC700, bfd_mach_arc_arc700, | |
427 | E_ARC_MACH_ARC700, 0x00}, | |
8699fc3e AB |
428 | { "nps400", ARC_OPCODE_ARC700 | ARC_OPCODE_NPS400, bfd_mach_arc_nps400, |
429 | E_ARC_MACH_NPS400, 0x00}, | |
886a2506 | 430 | { "arcem", ARC_OPCODE_ARCv2EM, bfd_mach_arc_arcv2, |
7e458899 | 431 | EF_ARC_CPU_ARCV2EM, ARC_CD}, |
886a2506 NC |
432 | { "archs", ARC_OPCODE_ARCv2HS, bfd_mach_arc_arcv2, |
433 | EF_ARC_CPU_ARCV2HS, ARC_CD}, | |
886a2506 NC |
434 | { 0, 0, 0, 0, 0 } |
435 | }; | |
252b5132 | 436 | |
886a2506 NC |
437 | /* Used by the arc_reloc_op table. Order is important. */ |
438 | #define O_gotoff O_md1 /* @gotoff relocation. */ | |
439 | #define O_gotpc O_md2 /* @gotpc relocation. */ | |
440 | #define O_plt O_md3 /* @plt relocation. */ | |
441 | #define O_sda O_md4 /* @sda relocation. */ | |
442 | #define O_pcl O_md5 /* @pcl relocation. */ | |
443 | #define O_tlsgd O_md6 /* @tlsgd relocation. */ | |
444 | #define O_tlsie O_md7 /* @tlsie relocation. */ | |
445 | #define O_tpoff9 O_md8 /* @tpoff9 relocation. */ | |
446 | #define O_tpoff O_md9 /* @tpoff relocation. */ | |
447 | #define O_dtpoff9 O_md10 /* @dtpoff9 relocation. */ | |
448 | #define O_dtpoff O_md11 /* @dtpoff relocation. */ | |
449 | #define O_last O_dtpoff | |
450 | ||
451 | /* Used to define a bracket as operand in tokens. */ | |
452 | #define O_bracket O_md32 | |
453 | ||
454 | /* Dummy relocation, to be sorted out. */ | |
455 | #define DUMMY_RELOC_ARC_ENTRY (BFD_RELOC_UNUSED + 1) | |
456 | ||
457 | #define USER_RELOC_P(R) ((R) >= O_gotoff && (R) <= O_last) | |
458 | ||
459 | /* A table to map the spelling of a relocation operand into an appropriate | |
460 | bfd_reloc_code_real_type type. The table is assumed to be ordered such | |
461 | that op-O_literal indexes into it. */ | |
462 | #define ARC_RELOC_TABLE(op) \ | |
463 | (&arc_reloc_op[ ((!USER_RELOC_P (op)) \ | |
464 | ? (abort (), 0) \ | |
465 | : (int) (op) - (int) O_gotoff) ]) | |
466 | ||
467 | #define DEF(NAME, RELOC, REQ) \ | |
468 | { #NAME, sizeof (#NAME)-1, O_##NAME, RELOC, REQ} | |
469 | ||
470 | static const struct arc_reloc_op_tag | |
471 | { | |
472 | /* String to lookup. */ | |
473 | const char *name; | |
474 | /* Size of the string. */ | |
475 | size_t length; | |
476 | /* Which operator to use. */ | |
477 | operatorT op; | |
478 | extended_bfd_reloc_code_real_type reloc; | |
479 | /* Allows complex relocation expression like identifier@reloc + | |
480 | const. */ | |
481 | unsigned int complex_expr : 1; | |
482 | } | |
483 | arc_reloc_op[] = | |
6f4b1afc CM |
484 | { |
485 | DEF (gotoff, BFD_RELOC_ARC_GOTOFF, 1), | |
486 | DEF (gotpc, BFD_RELOC_ARC_GOTPC32, 0), | |
487 | DEF (plt, BFD_RELOC_ARC_PLT32, 0), | |
488 | DEF (sda, DUMMY_RELOC_ARC_ENTRY, 1), | |
489 | DEF (pcl, BFD_RELOC_ARC_PC32, 1), | |
490 | DEF (tlsgd, BFD_RELOC_ARC_TLS_GD_GOT, 0), | |
491 | DEF (tlsie, BFD_RELOC_ARC_TLS_IE_GOT, 0), | |
492 | DEF (tpoff9, BFD_RELOC_ARC_TLS_LE_S9, 0), | |
b125bd17 | 493 | DEF (tpoff, BFD_RELOC_ARC_TLS_LE_32, 1), |
6f4b1afc CM |
494 | DEF (dtpoff9, BFD_RELOC_ARC_TLS_DTPOFF_S9, 0), |
495 | DEF (dtpoff, BFD_RELOC_ARC_TLS_DTPOFF, 0), | |
496 | }; | |
252b5132 | 497 | |
886a2506 NC |
498 | static const int arc_num_reloc_op |
499 | = sizeof (arc_reloc_op) / sizeof (*arc_reloc_op); | |
500 | ||
4670103e CZ |
501 | /* Structure for relaxable instruction that have to be swapped with a |
502 | smaller alternative instruction. */ | |
503 | struct arc_relaxable_ins | |
504 | { | |
505 | /* Mnemonic that should be checked. */ | |
506 | const char *mnemonic_r; | |
507 | ||
508 | /* Operands that should be checked. | |
509 | Indexes of operands from operand array. */ | |
510 | enum rlx_operand_type operands[6]; | |
511 | ||
512 | /* Flags that should be checked. */ | |
513 | unsigned flag_classes[5]; | |
514 | ||
515 | /* Mnemonic (smaller) alternative to be used later for relaxation. */ | |
516 | const char *mnemonic_alt; | |
517 | ||
518 | /* Index of operand that generic relaxation has to check. */ | |
519 | unsigned opcheckidx; | |
520 | ||
521 | /* Base subtype index used. */ | |
522 | enum arc_rlx_types subtype; | |
523 | }; | |
524 | ||
525 | #define RELAX_TABLE_ENTRY(BITS, ISSIGNED, SIZE, NEXT) \ | |
526 | { (ISSIGNED) ? ((1 << ((BITS) - 1)) - 1) : ((1 << (BITS)) - 1), \ | |
527 | (ISSIGNED) ? -(1 << ((BITS) - 1)) : 0, \ | |
528 | (SIZE), \ | |
529 | (NEXT) } \ | |
530 | ||
531 | #define RELAX_TABLE_ENTRY_MAX(ISSIGNED, SIZE, NEXT) \ | |
532 | { (ISSIGNED) ? 0x7FFFFFFF : 0xFFFFFFFF, \ | |
533 | (ISSIGNED) ? -(0x7FFFFFFF) : 0, \ | |
534 | (SIZE), \ | |
535 | (NEXT) } \ | |
536 | ||
537 | ||
538 | /* ARC relaxation table. */ | |
539 | const relax_typeS md_relax_table[] = | |
540 | { | |
541 | /* Fake entry. */ | |
542 | {0, 0, 0, 0}, | |
543 | ||
544 | /* BL_S s13 -> | |
545 | BL s25. */ | |
546 | RELAX_TABLE_ENTRY(13, 1, 2, ARC_RLX_BL), | |
547 | RELAX_TABLE_ENTRY(25, 1, 4, ARC_RLX_NONE), | |
548 | ||
549 | /* B_S s10 -> | |
550 | B s25. */ | |
551 | RELAX_TABLE_ENTRY(10, 1, 2, ARC_RLX_B), | |
552 | RELAX_TABLE_ENTRY(25, 1, 4, ARC_RLX_NONE), | |
553 | ||
554 | /* ADD_S c,b, u3 -> | |
555 | ADD<.f> a,b,u6 -> | |
556 | ADD<.f> a,b,limm. */ | |
557 | RELAX_TABLE_ENTRY(3, 0, 2, ARC_RLX_ADD_U6), | |
558 | RELAX_TABLE_ENTRY(6, 0, 4, ARC_RLX_ADD_LIMM), | |
559 | RELAX_TABLE_ENTRY_MAX(0, 8, ARC_RLX_NONE), | |
560 | ||
561 | /* LD_S a, [b, u7] -> | |
562 | LD<zz><.x><.aa><.di> a, [b, s9] -> | |
563 | LD<zz><.x><.aa><.di> a, [b, limm] */ | |
564 | RELAX_TABLE_ENTRY(7, 0, 2, ARC_RLX_LD_S9), | |
565 | RELAX_TABLE_ENTRY(9, 1, 4, ARC_RLX_LD_LIMM), | |
566 | RELAX_TABLE_ENTRY_MAX(1, 8, ARC_RLX_NONE), | |
567 | ||
568 | /* MOV_S b, u8 -> | |
569 | MOV<.f> b, s12 -> | |
570 | MOV<.f> b, limm. */ | |
571 | RELAX_TABLE_ENTRY(8, 0, 2, ARC_RLX_MOV_S12), | |
572 | RELAX_TABLE_ENTRY(8, 0, 4, ARC_RLX_MOV_LIMM), | |
573 | RELAX_TABLE_ENTRY_MAX(0, 8, ARC_RLX_NONE), | |
574 | ||
575 | /* SUB_S c, b, u3 -> | |
576 | SUB<.f> a, b, u6 -> | |
577 | SUB<.f> a, b, limm. */ | |
578 | RELAX_TABLE_ENTRY(3, 0, 2, ARC_RLX_SUB_U6), | |
579 | RELAX_TABLE_ENTRY(6, 0, 4, ARC_RLX_SUB_LIMM), | |
580 | RELAX_TABLE_ENTRY_MAX(0, 8, ARC_RLX_NONE), | |
581 | ||
582 | /* MPY<.f> a, b, u6 -> | |
583 | MPY<.f> a, b, limm. */ | |
584 | RELAX_TABLE_ENTRY(6, 0, 4, ARC_RLX_MPY_LIMM), | |
585 | RELAX_TABLE_ENTRY_MAX(0, 8, ARC_RLX_NONE), | |
586 | ||
587 | /* MOV<.f><.cc> b, u6 -> | |
588 | MOV<.f><.cc> b, limm. */ | |
589 | RELAX_TABLE_ENTRY(6, 0, 4, ARC_RLX_MOV_RLIMM), | |
590 | RELAX_TABLE_ENTRY_MAX(0, 8, ARC_RLX_NONE), | |
591 | ||
592 | /* ADD<.f><.cc> b, b, u6 -> | |
593 | ADD<.f><.cc> b, b, limm. */ | |
594 | RELAX_TABLE_ENTRY(6, 0, 4, ARC_RLX_ADD_RRLIMM), | |
595 | RELAX_TABLE_ENTRY_MAX(0, 8, ARC_RLX_NONE), | |
596 | }; | |
597 | ||
598 | /* Order of this table's entries matters! */ | |
599 | const struct arc_relaxable_ins arc_relaxable_insns[] = | |
600 | { | |
601 | { "bl", { IMMEDIATE }, { 0 }, "bl_s", 0, ARC_RLX_BL_S }, | |
602 | { "b", { IMMEDIATE }, { 0 }, "b_s", 0, ARC_RLX_B_S }, | |
603 | { "add", { REGISTER, REGISTER_DUP, IMMEDIATE }, { 5, 1, 0 }, "add", | |
604 | 2, ARC_RLX_ADD_RRU6}, | |
605 | { "add", { REGISTER_S, REGISTER_S, IMMEDIATE }, { 0 }, "add_s", 2, | |
606 | ARC_RLX_ADD_U3 }, | |
607 | { "add", { REGISTER, REGISTER, IMMEDIATE }, { 5, 0 }, "add", 2, | |
608 | ARC_RLX_ADD_U6 }, | |
609 | { "ld", { REGISTER_S, BRACKET, REGISTER_S, IMMEDIATE, BRACKET }, | |
610 | { 0 }, "ld_s", 3, ARC_RLX_LD_U7 }, | |
611 | { "ld", { REGISTER, BRACKET, REGISTER_NO_GP, IMMEDIATE, BRACKET }, | |
612 | { 11, 4, 14, 17, 0 }, "ld", 3, ARC_RLX_LD_S9 }, | |
613 | { "mov", { REGISTER_S, IMMEDIATE }, { 0 }, "mov_s", 1, ARC_RLX_MOV_U8 }, | |
614 | { "mov", { REGISTER, IMMEDIATE }, { 5, 0 }, "mov", 1, ARC_RLX_MOV_S12 }, | |
615 | { "mov", { REGISTER, IMMEDIATE }, { 5, 1, 0 },"mov", 1, ARC_RLX_MOV_RU6 }, | |
616 | { "sub", { REGISTER_S, REGISTER_S, IMMEDIATE }, { 0 }, "sub_s", 2, | |
617 | ARC_RLX_SUB_U3 }, | |
618 | { "sub", { REGISTER, REGISTER, IMMEDIATE }, { 5, 0 }, "sub", 2, | |
619 | ARC_RLX_SUB_U6 }, | |
620 | { "mpy", { REGISTER, REGISTER, IMMEDIATE }, { 5, 0 }, "mpy", 2, | |
621 | ARC_RLX_MPY_U6 }, | |
622 | }; | |
623 | ||
624 | const unsigned arc_num_relaxable_ins = ARRAY_SIZE (arc_relaxable_insns); | |
625 | ||
886a2506 NC |
626 | /* Flags to set in the elf header. */ |
627 | static flagword arc_eflag = 0x00; | |
628 | ||
629 | /* Pre-defined "_GLOBAL_OFFSET_TABLE_". */ | |
630 | symbolS * GOT_symbol = 0; | |
631 | ||
632 | /* Set to TRUE when we assemble instructions. */ | |
633 | static bfd_boolean assembling_insn = FALSE; | |
634 | ||
886a2506 NC |
635 | /* Functions implementation. */ |
636 | ||
b9b47ab7 AB |
637 | /* Return a pointer to ARC_OPCODE_HASH_ENTRY that identifies all |
638 | ARC_OPCODE entries in ARC_OPCODE_HASH that match NAME, or NULL if there | |
639 | are no matching entries in ARC_OPCODE_HASH. */ | |
da5be039 | 640 | |
b9b47ab7 | 641 | static const struct arc_opcode_hash_entry * |
da5be039 AB |
642 | arc_find_opcode (const char *name) |
643 | { | |
644 | const struct arc_opcode_hash_entry *entry; | |
da5be039 AB |
645 | |
646 | entry = hash_find (arc_opcode_hash, name); | |
b9b47ab7 | 647 | return entry; |
da5be039 AB |
648 | } |
649 | ||
1328504b AB |
650 | /* Initialise the iterator ITER. */ |
651 | ||
652 | static void | |
653 | arc_opcode_hash_entry_iterator_init (struct arc_opcode_hash_entry_iterator *iter) | |
654 | { | |
655 | iter->index = 0; | |
656 | iter->opcode = NULL; | |
657 | } | |
658 | ||
659 | /* Return the next ARC_OPCODE from ENTRY, using ITER to hold state between | |
660 | calls to this function. Return NULL when all ARC_OPCODE entries have | |
661 | been returned. */ | |
662 | ||
663 | static const struct arc_opcode * | |
664 | arc_opcode_hash_entry_iterator_next (const struct arc_opcode_hash_entry *entry, | |
665 | struct arc_opcode_hash_entry_iterator *iter) | |
666 | { | |
667 | if (iter->opcode == NULL && iter->index == 0) | |
668 | { | |
669 | gas_assert (entry->count > 0); | |
670 | iter->opcode = entry->opcode[iter->index]; | |
671 | } | |
672 | else if (iter->opcode != NULL) | |
673 | { | |
674 | const char *old_name = iter->opcode->name; | |
675 | ||
676 | iter->opcode++; | |
b99747ae CZ |
677 | if (iter->opcode->name |
678 | && (strcmp (old_name, iter->opcode->name) != 0)) | |
1328504b AB |
679 | { |
680 | iter->index++; | |
681 | if (iter->index == entry->count) | |
682 | iter->opcode = NULL; | |
683 | else | |
684 | iter->opcode = entry->opcode[iter->index]; | |
685 | } | |
686 | } | |
687 | ||
688 | return iter->opcode; | |
689 | } | |
690 | ||
b99747ae CZ |
691 | /* Insert an opcode into opcode hash structure. */ |
692 | ||
693 | static void | |
694 | arc_insert_opcode (const struct arc_opcode *opcode) | |
695 | { | |
696 | const char *name, *retval; | |
697 | struct arc_opcode_hash_entry *entry; | |
698 | name = opcode->name; | |
699 | ||
700 | entry = hash_find (arc_opcode_hash, name); | |
701 | if (entry == NULL) | |
702 | { | |
add39d23 | 703 | entry = XNEW (struct arc_opcode_hash_entry); |
b99747ae CZ |
704 | entry->count = 0; |
705 | entry->opcode = NULL; | |
706 | ||
707 | retval = hash_insert (arc_opcode_hash, name, (void *) entry); | |
708 | if (retval) | |
709 | as_fatal (_("internal error: can't hash opcode '%s': %s"), | |
710 | name, retval); | |
711 | } | |
712 | ||
add39d23 TS |
713 | entry->opcode = XRESIZEVEC (const struct arc_opcode *, entry->opcode, |
714 | entry->count + 1); | |
b99747ae CZ |
715 | |
716 | if (entry->opcode == NULL) | |
717 | as_fatal (_("Virtual memory exhausted")); | |
718 | ||
719 | entry->opcode[entry->count] = opcode; | |
720 | entry->count++; | |
721 | } | |
722 | ||
723 | ||
886a2506 NC |
724 | /* Like md_number_to_chars but used for limms. The 4-byte limm value, |
725 | is encoded as 'middle-endian' for a little-endian target. FIXME! | |
726 | this function is used for regular 4 byte instructions as well. */ | |
727 | ||
728 | static void | |
6f4b1afc | 729 | md_number_to_chars_midend (char *buf, valueT val, int n) |
886a2506 NC |
730 | { |
731 | if (n == 4) | |
732 | { | |
733 | md_number_to_chars (buf, (val & 0xffff0000) >> 16, 2); | |
734 | md_number_to_chars (buf + 2, (val & 0xffff), 2); | |
252b5132 RH |
735 | } |
736 | else | |
886a2506 NC |
737 | { |
738 | md_number_to_chars (buf, val, n); | |
739 | } | |
252b5132 RH |
740 | } |
741 | ||
24740d83 AB |
742 | /* Select an appropriate entry from CPU_TYPES based on ARG and initialise |
743 | the relevant static global variables. */ | |
744 | ||
745 | static void | |
746 | arc_select_cpu (const char *arg) | |
747 | { | |
a9522a21 | 748 | int cpu_flags = 0; |
24740d83 AB |
749 | int i; |
750 | ||
751 | for (i = 0; cpu_types[i].name; ++i) | |
752 | { | |
753 | if (!strcasecmp (cpu_types[i].name, arg)) | |
754 | { | |
755 | arc_target = cpu_types[i].flags; | |
756 | arc_target_name = cpu_types[i].name; | |
757 | arc_features = cpu_types[i].features; | |
758 | arc_mach_type = cpu_types[i].mach; | |
759 | cpu_flags = cpu_types[i].eflags; | |
760 | break; | |
761 | } | |
762 | } | |
763 | ||
764 | if (!cpu_types[i].name) | |
765 | as_fatal (_("unknown architecture: %s\n"), arg); | |
a9522a21 AB |
766 | gas_assert (cpu_flags != 0); |
767 | arc_eflag = (arc_eflag & ~EF_ARC_MACH_MSK) | cpu_flags; | |
24740d83 AB |
768 | } |
769 | ||
886a2506 NC |
770 | /* Here ends all the ARCompact extension instruction assembling |
771 | stuff. */ | |
252b5132 | 772 | |
886a2506 NC |
773 | static void |
774 | arc_extra_reloc (int r_type) | |
ea1562b3 | 775 | { |
886a2506 NC |
776 | char *sym_name, c; |
777 | symbolS *sym, *lab = NULL; | |
778 | ||
779 | if (*input_line_pointer == '@') | |
780 | input_line_pointer++; | |
781 | c = get_symbol_name (&sym_name); | |
782 | sym = symbol_find_or_make (sym_name); | |
783 | restore_line_pointer (c); | |
784 | if (c == ',' && r_type == BFD_RELOC_ARC_TLS_GD_LD) | |
785 | { | |
786 | ++input_line_pointer; | |
787 | char *lab_name; | |
788 | c = get_symbol_name (&lab_name); | |
789 | lab = symbol_find_or_make (lab_name); | |
790 | restore_line_pointer (c); | |
791 | } | |
841fdfcd CZ |
792 | |
793 | /* These relocations exist as a mechanism for the compiler to tell the | |
794 | linker how to patch the code if the tls model is optimised. However, | |
795 | the relocation itself does not require any space within the assembler | |
796 | fragment, and so we pass a size of 0. | |
797 | ||
798 | The lines that generate these relocations look like this: | |
799 | ||
800 | .tls_gd_ld @.tdata`bl __tls_get_addr@plt | |
801 | ||
802 | The '.tls_gd_ld @.tdata' is processed first and generates the | |
803 | additional relocation, while the 'bl __tls_get_addr@plt' is processed | |
804 | second and generates the additional branch. | |
805 | ||
806 | It is possible that the additional relocation generated by the | |
807 | '.tls_gd_ld @.tdata' will be attached at the very end of one fragment, | |
808 | while the 'bl __tls_get_addr@plt' will be generated as the first thing | |
809 | in the next fragment. This will be fine; both relocations will still | |
810 | appear to be at the same address in the generated object file. | |
811 | However, this only works as the additional relocation is generated | |
812 | with size of 0 bytes. */ | |
886a2506 NC |
813 | fixS *fixP |
814 | = fix_new (frag_now, /* Which frag? */ | |
815 | frag_now_fix (), /* Where in that frag? */ | |
841fdfcd | 816 | 0, /* size: 1, 2, or 4 usually. */ |
886a2506 NC |
817 | sym, /* X_add_symbol. */ |
818 | 0, /* X_add_number. */ | |
819 | FALSE, /* TRUE if PC-relative relocation. */ | |
820 | r_type /* Relocation type. */); | |
821 | fixP->fx_subsy = lab; | |
822 | } | |
252b5132 | 823 | |
886a2506 NC |
824 | static symbolS * |
825 | arc_lcomm_internal (int ignore ATTRIBUTE_UNUSED, | |
826 | symbolS *symbolP, addressT size) | |
827 | { | |
828 | addressT align = 0; | |
829 | SKIP_WHITESPACE (); | |
252b5132 | 830 | |
886a2506 NC |
831 | if (*input_line_pointer == ',') |
832 | { | |
833 | align = parse_align (1); | |
252b5132 | 834 | |
886a2506 NC |
835 | if (align == (addressT) -1) |
836 | return NULL; | |
837 | } | |
838 | else | |
839 | { | |
840 | if (size >= 8) | |
841 | align = 3; | |
842 | else if (size >= 4) | |
843 | align = 2; | |
844 | else if (size >= 2) | |
845 | align = 1; | |
846 | else | |
847 | align = 0; | |
848 | } | |
252b5132 | 849 | |
886a2506 NC |
850 | bss_alloc (symbolP, size, align); |
851 | S_CLEAR_EXTERNAL (symbolP); | |
ea1562b3 | 852 | |
886a2506 NC |
853 | return symbolP; |
854 | } | |
ea1562b3 | 855 | |
886a2506 NC |
856 | static void |
857 | arc_lcomm (int ignore) | |
858 | { | |
859 | symbolS *symbolP = s_comm_internal (ignore, arc_lcomm_internal); | |
ea1562b3 | 860 | |
886a2506 NC |
861 | if (symbolP) |
862 | symbol_get_bfdsym (symbolP)->flags |= BSF_OBJECT; | |
863 | } | |
ea1562b3 | 864 | |
886a2506 | 865 | /* Select the cpu we're assembling for. */ |
ea1562b3 | 866 | |
886a2506 NC |
867 | static void |
868 | arc_option (int ignore ATTRIBUTE_UNUSED) | |
252b5132 | 869 | { |
886a2506 NC |
870 | int mach = -1; |
871 | char c; | |
872 | char *cpu; | |
252b5132 | 873 | |
886a2506 NC |
874 | c = get_symbol_name (&cpu); |
875 | mach = arc_get_mach (cpu); | |
252b5132 | 876 | |
886a2506 NC |
877 | if (mach == -1) |
878 | goto bad_cpu; | |
879 | ||
880 | if (!mach_type_specified_p) | |
ea1562b3 | 881 | { |
644aca26 AB |
882 | if ((!strcmp ("ARC600", cpu)) |
883 | || (!strcmp ("ARC601", cpu)) | |
884 | || (!strcmp ("A6", cpu))) | |
24b368f8 CZ |
885 | { |
886 | md_parse_option (OPTION_MCPU, "arc600"); | |
887 | } | |
644aca26 AB |
888 | else if ((!strcmp ("ARC700", cpu)) |
889 | || (!strcmp ("A7", cpu))) | |
24b368f8 CZ |
890 | { |
891 | md_parse_option (OPTION_MCPU, "arc700"); | |
892 | } | |
644aca26 | 893 | else if (!strcmp ("EM", cpu)) |
24b368f8 CZ |
894 | { |
895 | md_parse_option (OPTION_MCPU, "arcem"); | |
896 | } | |
644aca26 | 897 | else if (!strcmp ("HS", cpu)) |
24b368f8 CZ |
898 | { |
899 | md_parse_option (OPTION_MCPU, "archs"); | |
900 | } | |
644aca26 | 901 | else if (!strcmp ("NPS400", cpu)) |
5e001f26 AB |
902 | { |
903 | md_parse_option (OPTION_MCPU, "nps400"); | |
904 | } | |
24b368f8 | 905 | else |
e6ba1cba | 906 | as_fatal (_("could not find the architecture")); |
24b368f8 | 907 | |
886a2506 | 908 | if (!bfd_set_arch_mach (stdoutput, bfd_arch_arc, mach)) |
e6ba1cba | 909 | as_fatal (_("could not set architecture and machine")); |
1adc8a9a CZ |
910 | |
911 | /* Set elf header flags. */ | |
912 | bfd_set_private_flags (stdoutput, arc_eflag); | |
ea1562b3 NC |
913 | } |
914 | else | |
886a2506 | 915 | if (arc_mach_type != mach) |
e6ba1cba | 916 | as_warn (_("Command-line value overrides \".cpu\" directive")); |
886a2506 | 917 | |
24b368f8 | 918 | restore_line_pointer (c); |
886a2506 | 919 | demand_empty_rest_of_line (); |
886a2506 NC |
920 | return; |
921 | ||
922 | bad_cpu: | |
24b368f8 | 923 | restore_line_pointer (c); |
e6ba1cba | 924 | as_bad (_("invalid identifier for \".cpu\"")); |
886a2506 | 925 | ignore_rest_of_line (); |
ea1562b3 | 926 | } |
252b5132 | 927 | |
886a2506 NC |
928 | /* Smartly print an expression. */ |
929 | ||
ea1562b3 | 930 | static void |
886a2506 | 931 | debug_exp (expressionS *t) |
ea1562b3 | 932 | { |
886a2506 NC |
933 | const char *name ATTRIBUTE_UNUSED; |
934 | const char *namemd ATTRIBUTE_UNUSED; | |
252b5132 | 935 | |
886a2506 | 936 | pr_debug ("debug_exp: "); |
252b5132 | 937 | |
886a2506 | 938 | switch (t->X_op) |
252b5132 | 939 | { |
886a2506 NC |
940 | default: name = "unknown"; break; |
941 | case O_illegal: name = "O_illegal"; break; | |
942 | case O_absent: name = "O_absent"; break; | |
943 | case O_constant: name = "O_constant"; break; | |
944 | case O_symbol: name = "O_symbol"; break; | |
945 | case O_symbol_rva: name = "O_symbol_rva"; break; | |
946 | case O_register: name = "O_register"; break; | |
947 | case O_big: name = "O_big"; break; | |
948 | case O_uminus: name = "O_uminus"; break; | |
949 | case O_bit_not: name = "O_bit_not"; break; | |
950 | case O_logical_not: name = "O_logical_not"; break; | |
951 | case O_multiply: name = "O_multiply"; break; | |
952 | case O_divide: name = "O_divide"; break; | |
953 | case O_modulus: name = "O_modulus"; break; | |
954 | case O_left_shift: name = "O_left_shift"; break; | |
955 | case O_right_shift: name = "O_right_shift"; break; | |
956 | case O_bit_inclusive_or: name = "O_bit_inclusive_or"; break; | |
957 | case O_bit_or_not: name = "O_bit_or_not"; break; | |
958 | case O_bit_exclusive_or: name = "O_bit_exclusive_or"; break; | |
959 | case O_bit_and: name = "O_bit_and"; break; | |
960 | case O_add: name = "O_add"; break; | |
961 | case O_subtract: name = "O_subtract"; break; | |
962 | case O_eq: name = "O_eq"; break; | |
963 | case O_ne: name = "O_ne"; break; | |
964 | case O_lt: name = "O_lt"; break; | |
965 | case O_le: name = "O_le"; break; | |
966 | case O_ge: name = "O_ge"; break; | |
967 | case O_gt: name = "O_gt"; break; | |
968 | case O_logical_and: name = "O_logical_and"; break; | |
969 | case O_logical_or: name = "O_logical_or"; break; | |
970 | case O_index: name = "O_index"; break; | |
971 | case O_bracket: name = "O_bracket"; break; | |
ea1562b3 | 972 | } |
252b5132 | 973 | |
886a2506 | 974 | switch (t->X_md) |
ea1562b3 | 975 | { |
886a2506 NC |
976 | default: namemd = "unknown"; break; |
977 | case O_gotoff: namemd = "O_gotoff"; break; | |
978 | case O_gotpc: namemd = "O_gotpc"; break; | |
979 | case O_plt: namemd = "O_plt"; break; | |
980 | case O_sda: namemd = "O_sda"; break; | |
981 | case O_pcl: namemd = "O_pcl"; break; | |
982 | case O_tlsgd: namemd = "O_tlsgd"; break; | |
983 | case O_tlsie: namemd = "O_tlsie"; break; | |
984 | case O_tpoff9: namemd = "O_tpoff9"; break; | |
985 | case O_tpoff: namemd = "O_tpoff"; break; | |
986 | case O_dtpoff9: namemd = "O_dtpoff9"; break; | |
987 | case O_dtpoff: namemd = "O_dtpoff"; break; | |
ea1562b3 | 988 | } |
252b5132 | 989 | |
886a2506 NC |
990 | pr_debug ("%s (%s, %s, %d, %s)", name, |
991 | (t->X_add_symbol) ? S_GET_NAME (t->X_add_symbol) : "--", | |
992 | (t->X_op_symbol) ? S_GET_NAME (t->X_op_symbol) : "--", | |
993 | (int) t->X_add_number, | |
994 | (t->X_md) ? namemd : "--"); | |
995 | pr_debug ("\n"); | |
996 | fflush (stderr); | |
997 | } | |
252b5132 | 998 | |
886a2506 NC |
999 | /* Parse the arguments to an opcode. */ |
1000 | ||
1001 | static int | |
1002 | tokenize_arguments (char *str, | |
1003 | expressionS *tok, | |
1004 | int ntok) | |
1005 | { | |
1006 | char *old_input_line_pointer; | |
1007 | bfd_boolean saw_comma = FALSE; | |
1008 | bfd_boolean saw_arg = FALSE; | |
1009 | int brk_lvl = 0; | |
1010 | int num_args = 0; | |
886a2506 NC |
1011 | int i; |
1012 | size_t len; | |
1013 | const struct arc_reloc_op_tag *r; | |
1014 | expressionS tmpE; | |
6f4b1afc | 1015 | char *reloc_name, c; |
886a2506 NC |
1016 | |
1017 | memset (tok, 0, sizeof (*tok) * ntok); | |
1018 | ||
1019 | /* Save and restore input_line_pointer around this function. */ | |
1020 | old_input_line_pointer = input_line_pointer; | |
1021 | input_line_pointer = str; | |
ea1562b3 | 1022 | |
886a2506 | 1023 | while (*input_line_pointer) |
ea1562b3 NC |
1024 | { |
1025 | SKIP_WHITESPACE (); | |
886a2506 | 1026 | switch (*input_line_pointer) |
252b5132 | 1027 | { |
886a2506 NC |
1028 | case '\0': |
1029 | goto fini; | |
1030 | ||
1031 | case ',': | |
1032 | input_line_pointer++; | |
1033 | if (saw_comma || !saw_arg) | |
1034 | goto err; | |
1035 | saw_comma = TRUE; | |
1036 | break; | |
252b5132 | 1037 | |
886a2506 NC |
1038 | case '}': |
1039 | case ']': | |
1040 | ++input_line_pointer; | |
1041 | --brk_lvl; | |
1042 | if (!saw_arg) | |
1043 | goto err; | |
1044 | tok->X_op = O_bracket; | |
1045 | ++tok; | |
1046 | ++num_args; | |
1047 | break; | |
ea1562b3 | 1048 | |
886a2506 NC |
1049 | case '{': |
1050 | case '[': | |
1051 | input_line_pointer++; | |
1052 | if (brk_lvl) | |
1053 | goto err; | |
1054 | ++brk_lvl; | |
1055 | tok->X_op = O_bracket; | |
1056 | ++tok; | |
1057 | ++num_args; | |
1058 | break; | |
1059 | ||
1060 | case '@': | |
1061 | /* We have labels, function names and relocations, all | |
1062 | starting with @ symbol. Sort them out. */ | |
1063 | if (saw_arg && !saw_comma) | |
1064 | goto err; | |
1065 | ||
1066 | /* Parse @label. */ | |
1067 | tok->X_op = O_symbol; | |
1068 | tok->X_md = O_absent; | |
1069 | expression (tok); | |
1070 | if (*input_line_pointer != '@') | |
1071 | goto normalsymbol; /* This is not a relocation. */ | |
1072 | ||
6f4b1afc CM |
1073 | relocationsym: |
1074 | ||
886a2506 NC |
1075 | /* A relocation opernad has the following form |
1076 | @identifier@relocation_type. The identifier is already | |
1077 | in tok! */ | |
1078 | if (tok->X_op != O_symbol) | |
ea1562b3 | 1079 | { |
886a2506 NC |
1080 | as_bad (_("No valid label relocation operand")); |
1081 | goto err; | |
252b5132 | 1082 | } |
886a2506 NC |
1083 | |
1084 | /* Parse @relocation_type. */ | |
6f4b1afc CM |
1085 | input_line_pointer++; |
1086 | c = get_symbol_name (&reloc_name); | |
1087 | len = input_line_pointer - reloc_name; | |
1088 | if (len == 0) | |
252b5132 | 1089 | { |
886a2506 NC |
1090 | as_bad (_("No relocation operand")); |
1091 | goto err; | |
252b5132 | 1092 | } |
252b5132 | 1093 | |
886a2506 NC |
1094 | /* Go through known relocation and try to find a match. */ |
1095 | r = &arc_reloc_op[0]; | |
1096 | for (i = arc_num_reloc_op - 1; i >= 0; i--, r++) | |
6f4b1afc CM |
1097 | if (len == r->length |
1098 | && memcmp (reloc_name, r->name, len) == 0) | |
886a2506 | 1099 | break; |
886a2506 | 1100 | if (i < 0) |
252b5132 | 1101 | { |
6f4b1afc | 1102 | as_bad (_("Unknown relocation operand: @%s"), reloc_name); |
886a2506 NC |
1103 | goto err; |
1104 | } | |
1105 | ||
6f4b1afc CM |
1106 | *input_line_pointer = c; |
1107 | SKIP_WHITESPACE_AFTER_NAME (); | |
886a2506 NC |
1108 | /* Extra check for TLS: base. */ |
1109 | if (*input_line_pointer == '@') | |
1110 | { | |
1111 | symbolS *base; | |
1112 | if (tok->X_op_symbol != NULL | |
1113 | || tok->X_op != O_symbol) | |
252b5132 | 1114 | { |
6f4b1afc CM |
1115 | as_bad (_("Unable to parse TLS base: %s"), |
1116 | input_line_pointer); | |
886a2506 | 1117 | goto err; |
252b5132 | 1118 | } |
886a2506 NC |
1119 | input_line_pointer++; |
1120 | char *sym_name; | |
6f4b1afc | 1121 | c = get_symbol_name (&sym_name); |
886a2506 NC |
1122 | base = symbol_find_or_make (sym_name); |
1123 | tok->X_op = O_subtract; | |
1124 | tok->X_op_symbol = base; | |
1125 | restore_line_pointer (c); | |
6f4b1afc CM |
1126 | tmpE.X_add_number = 0; |
1127 | } | |
1128 | else if ((*input_line_pointer != '+') | |
1129 | && (*input_line_pointer != '-')) | |
1130 | { | |
1131 | tmpE.X_add_number = 0; | |
ea1562b3 | 1132 | } |
6f4b1afc CM |
1133 | else |
1134 | { | |
1135 | /* Parse the constant of a complex relocation expression | |
1136 | like @identifier@reloc +/- const. */ | |
1137 | if (! r->complex_expr) | |
1138 | { | |
1139 | as_bad (_("@%s is not a complex relocation."), r->name); | |
1140 | goto err; | |
1141 | } | |
1142 | expression (&tmpE); | |
1143 | if (tmpE.X_op != O_constant) | |
1144 | { | |
1145 | as_bad (_("Bad expression: @%s + %s."), | |
1146 | r->name, input_line_pointer); | |
1147 | goto err; | |
1148 | } | |
1149 | } | |
1150 | ||
1151 | tok->X_md = r->op; | |
1152 | tok->X_add_number = tmpE.X_add_number; | |
1e07b820 | 1153 | |
886a2506 | 1154 | debug_exp (tok); |
ea1562b3 | 1155 | |
886a2506 NC |
1156 | saw_comma = FALSE; |
1157 | saw_arg = TRUE; | |
1158 | tok++; | |
1159 | num_args++; | |
1160 | break; | |
252b5132 | 1161 | |
886a2506 NC |
1162 | case '%': |
1163 | /* Can be a register. */ | |
1164 | ++input_line_pointer; | |
1165 | /* Fall through. */ | |
1166 | default: | |
252b5132 | 1167 | |
886a2506 NC |
1168 | if (saw_arg && !saw_comma) |
1169 | goto err; | |
252b5132 | 1170 | |
886a2506 | 1171 | tok->X_op = O_absent; |
6f4b1afc | 1172 | tok->X_md = O_absent; |
886a2506 | 1173 | expression (tok); |
252b5132 | 1174 | |
6f4b1afc CM |
1175 | /* Legacy: There are cases when we have |
1176 | identifier@relocation_type, if it is the case parse the | |
1177 | relocation type as well. */ | |
1178 | if (*input_line_pointer == '@') | |
1179 | goto relocationsym; | |
1180 | ||
886a2506 NC |
1181 | normalsymbol: |
1182 | debug_exp (tok); | |
252b5132 | 1183 | |
886a2506 NC |
1184 | if (tok->X_op == O_illegal || tok->X_op == O_absent) |
1185 | goto err; | |
252b5132 | 1186 | |
886a2506 NC |
1187 | saw_comma = FALSE; |
1188 | saw_arg = TRUE; | |
1189 | tok++; | |
1190 | num_args++; | |
1191 | break; | |
1192 | } | |
ea1562b3 | 1193 | } |
252b5132 | 1194 | |
886a2506 NC |
1195 | fini: |
1196 | if (saw_comma || brk_lvl) | |
1197 | goto err; | |
1198 | input_line_pointer = old_input_line_pointer; | |
252b5132 | 1199 | |
886a2506 | 1200 | return num_args; |
252b5132 | 1201 | |
886a2506 NC |
1202 | err: |
1203 | if (brk_lvl) | |
1204 | as_bad (_("Brackets in operand field incorrect")); | |
1205 | else if (saw_comma) | |
1206 | as_bad (_("extra comma")); | |
1207 | else if (!saw_arg) | |
1208 | as_bad (_("missing argument")); | |
1209 | else | |
1210 | as_bad (_("missing comma or colon")); | |
1211 | input_line_pointer = old_input_line_pointer; | |
1212 | return -1; | |
252b5132 | 1213 | } |
ea1562b3 | 1214 | |
886a2506 NC |
1215 | /* Parse the flags to a structure. */ |
1216 | ||
1217 | static int | |
1218 | tokenize_flags (const char *str, | |
1219 | struct arc_flags flags[], | |
1220 | int nflg) | |
252b5132 | 1221 | { |
886a2506 NC |
1222 | char *old_input_line_pointer; |
1223 | bfd_boolean saw_flg = FALSE; | |
1224 | bfd_boolean saw_dot = FALSE; | |
1225 | int num_flags = 0; | |
1226 | size_t flgnamelen; | |
252b5132 | 1227 | |
886a2506 | 1228 | memset (flags, 0, sizeof (*flags) * nflg); |
0d2bcfaf | 1229 | |
886a2506 NC |
1230 | /* Save and restore input_line_pointer around this function. */ |
1231 | old_input_line_pointer = input_line_pointer; | |
1232 | input_line_pointer = (char *) str; | |
0d2bcfaf | 1233 | |
886a2506 NC |
1234 | while (*input_line_pointer) |
1235 | { | |
1236 | switch (*input_line_pointer) | |
1237 | { | |
1238 | case ' ': | |
1239 | case '\0': | |
1240 | goto fini; | |
1241 | ||
1242 | case '.': | |
1243 | input_line_pointer++; | |
1244 | if (saw_dot) | |
1245 | goto err; | |
1246 | saw_dot = TRUE; | |
1247 | saw_flg = FALSE; | |
1248 | break; | |
ea1562b3 | 1249 | |
886a2506 NC |
1250 | default: |
1251 | if (saw_flg && !saw_dot) | |
1252 | goto err; | |
0d2bcfaf | 1253 | |
886a2506 NC |
1254 | if (num_flags >= nflg) |
1255 | goto err; | |
0d2bcfaf | 1256 | |
692166c2 AB |
1257 | flgnamelen = strspn (input_line_pointer, |
1258 | "abcdefghijklmnopqrstuvwxyz0123456789"); | |
83cda17b | 1259 | if (flgnamelen > MAX_FLAG_NAME_LENGTH) |
886a2506 | 1260 | goto err; |
0d2bcfaf | 1261 | |
886a2506 | 1262 | memcpy (flags->name, input_line_pointer, flgnamelen); |
0d2bcfaf | 1263 | |
886a2506 NC |
1264 | input_line_pointer += flgnamelen; |
1265 | flags++; | |
1266 | saw_dot = FALSE; | |
1267 | saw_flg = TRUE; | |
1268 | num_flags++; | |
1269 | break; | |
1e07b820 | 1270 | } |
0d2bcfaf NC |
1271 | } |
1272 | ||
886a2506 NC |
1273 | fini: |
1274 | input_line_pointer = old_input_line_pointer; | |
1275 | return num_flags; | |
0d2bcfaf | 1276 | |
886a2506 NC |
1277 | err: |
1278 | if (saw_dot) | |
1279 | as_bad (_("extra dot")); | |
1280 | else if (!saw_flg) | |
1281 | as_bad (_("unrecognized flag")); | |
1282 | else | |
1283 | as_bad (_("failed to parse flags")); | |
1284 | input_line_pointer = old_input_line_pointer; | |
1285 | return -1; | |
1286 | } | |
0d2bcfaf | 1287 | |
4670103e | 1288 | /* Apply the fixups in order. */ |
0d2bcfaf | 1289 | |
4670103e CZ |
1290 | static void |
1291 | apply_fixups (struct arc_insn *insn, fragS *fragP, int fix) | |
886a2506 | 1292 | { |
4670103e | 1293 | int i; |
0d2bcfaf | 1294 | |
4670103e | 1295 | for (i = 0; i < insn->nfixups; i++) |
252b5132 | 1296 | { |
4670103e CZ |
1297 | struct arc_fixup *fixup = &insn->fixups[i]; |
1298 | int size, pcrel, offset = 0; | |
0d2bcfaf | 1299 | |
4670103e CZ |
1300 | /* FIXME! the reloc size is wrong in the BFD file. |
1301 | When it is fixed please delete me. */ | |
1302 | size = (insn->short_insn && !fixup->islong) ? 2 : 4; | |
0d2bcfaf | 1303 | |
4670103e CZ |
1304 | if (fixup->islong) |
1305 | offset = (insn->short_insn) ? 2 : 4; | |
252b5132 | 1306 | |
4670103e CZ |
1307 | /* Some fixups are only used internally, thus no howto. */ |
1308 | if ((int) fixup->reloc == 0) | |
1309 | as_fatal (_("Unhandled reloc type")); | |
886a2506 | 1310 | |
4670103e CZ |
1311 | if ((int) fixup->reloc < 0) |
1312 | { | |
1313 | /* FIXME! the reloc size is wrong in the BFD file. | |
1314 | When it is fixed please enable me. | |
1315 | size = (insn->short_insn && !fixup->islong) ? 2 : 4; */ | |
1316 | pcrel = fixup->pcrel; | |
1317 | } | |
1318 | else | |
1319 | { | |
1320 | reloc_howto_type *reloc_howto = | |
1321 | bfd_reloc_type_lookup (stdoutput, | |
1322 | (bfd_reloc_code_real_type) fixup->reloc); | |
1323 | gas_assert (reloc_howto); | |
0d2bcfaf | 1324 | |
4670103e CZ |
1325 | /* FIXME! the reloc size is wrong in the BFD file. |
1326 | When it is fixed please enable me. | |
1327 | size = bfd_get_reloc_size (reloc_howto); */ | |
1328 | pcrel = reloc_howto->pc_relative; | |
1329 | } | |
0d2bcfaf | 1330 | |
4670103e CZ |
1331 | pr_debug ("%s:%d: apply_fixups: new %s fixup (PCrel:%s) of size %d @ \ |
1332 | offset %d + %d\n", | |
1333 | fragP->fr_file, fragP->fr_line, | |
1334 | (fixup->reloc < 0) ? "Internal" : | |
1335 | bfd_get_reloc_code_name (fixup->reloc), | |
1336 | pcrel ? "Y" : "N", | |
1337 | size, fix, offset); | |
1338 | fix_new_exp (fragP, fix + offset, | |
1339 | size, &fixup->exp, pcrel, fixup->reloc); | |
0d2bcfaf | 1340 | |
4670103e CZ |
1341 | /* Check for ZOLs, and update symbol info if any. */ |
1342 | if (LP_INSN (insn->insn)) | |
886a2506 | 1343 | { |
4670103e CZ |
1344 | gas_assert (fixup->exp.X_add_symbol); |
1345 | ARC_SET_FLAG (fixup->exp.X_add_symbol, ARC_FLAG_ZOL); | |
886a2506 NC |
1346 | } |
1347 | } | |
252b5132 RH |
1348 | } |
1349 | ||
4670103e | 1350 | /* Actually output an instruction with its fixup. */ |
886a2506 | 1351 | |
4670103e CZ |
1352 | static void |
1353 | emit_insn0 (struct arc_insn *insn, char *where, bfd_boolean relax) | |
252b5132 | 1354 | { |
4670103e | 1355 | char *f = where; |
252b5132 | 1356 | |
4670103e CZ |
1357 | pr_debug ("Emit insn : 0x%x\n", insn->insn); |
1358 | pr_debug ("\tShort : 0x%d\n", insn->short_insn); | |
1359 | pr_debug ("\tLong imm: 0x%lx\n", insn->limm); | |
0d2bcfaf | 1360 | |
4670103e CZ |
1361 | /* Write out the instruction. */ |
1362 | if (insn->short_insn) | |
0d2bcfaf | 1363 | { |
4670103e CZ |
1364 | if (insn->has_limm) |
1365 | { | |
1366 | if (!relax) | |
1367 | f = frag_more (6); | |
1368 | md_number_to_chars (f, insn->insn, 2); | |
1369 | md_number_to_chars_midend (f + 2, insn->limm, 4); | |
1370 | dwarf2_emit_insn (6); | |
1371 | } | |
1372 | else | |
1373 | { | |
1374 | if (!relax) | |
1375 | f = frag_more (2); | |
1376 | md_number_to_chars (f, insn->insn, 2); | |
1377 | dwarf2_emit_insn (2); | |
1378 | } | |
1379 | } | |
1380 | else | |
1381 | { | |
1382 | if (insn->has_limm) | |
1383 | { | |
1384 | if (!relax) | |
1385 | f = frag_more (8); | |
1386 | md_number_to_chars_midend (f, insn->insn, 4); | |
1387 | md_number_to_chars_midend (f + 4, insn->limm, 4); | |
1388 | dwarf2_emit_insn (8); | |
1389 | } | |
1390 | else | |
1391 | { | |
1392 | if (!relax) | |
1393 | f = frag_more (4); | |
1394 | md_number_to_chars_midend (f, insn->insn, 4); | |
1395 | dwarf2_emit_insn (4); | |
1396 | } | |
252b5132 | 1397 | } |
252b5132 | 1398 | |
4670103e CZ |
1399 | if (!relax) |
1400 | apply_fixups (insn, frag_now, (f - frag_now->fr_literal)); | |
1401 | } | |
252b5132 | 1402 | |
4670103e CZ |
1403 | static void |
1404 | emit_insn1 (struct arc_insn *insn) | |
1405 | { | |
1406 | /* How frag_var's args are currently configured: | |
1407 | - rs_machine_dependent, to dictate it's a relaxation frag. | |
1408 | - FRAG_MAX_GROWTH, maximum size of instruction | |
1409 | - 0, variable size that might grow...unused by generic relaxation. | |
1410 | - frag_now->fr_subtype, fr_subtype starting value, set previously. | |
1411 | - s, opand expression. | |
1412 | - 0, offset but it's unused. | |
1413 | - 0, opcode but it's unused. */ | |
1414 | symbolS *s = make_expr_symbol (&insn->fixups[0].exp); | |
1415 | frag_now->tc_frag_data.pcrel = insn->fixups[0].pcrel; | |
1416 | ||
1417 | if (frag_room () < FRAG_MAX_GROWTH) | |
1418 | { | |
1419 | /* Handle differently when frag literal memory is exhausted. | |
1420 | This is used because when there's not enough memory left in | |
1421 | the current frag, a new frag is created and the information | |
1422 | we put into frag_now->tc_frag_data is disregarded. */ | |
252b5132 | 1423 | |
4670103e CZ |
1424 | struct arc_relax_type relax_info_copy; |
1425 | relax_substateT subtype = frag_now->fr_subtype; | |
252b5132 | 1426 | |
4670103e CZ |
1427 | memcpy (&relax_info_copy, &frag_now->tc_frag_data, |
1428 | sizeof (struct arc_relax_type)); | |
0d2bcfaf | 1429 | |
4670103e CZ |
1430 | frag_wane (frag_now); |
1431 | frag_grow (FRAG_MAX_GROWTH); | |
0d2bcfaf | 1432 | |
4670103e CZ |
1433 | memcpy (&frag_now->tc_frag_data, &relax_info_copy, |
1434 | sizeof (struct arc_relax_type)); | |
252b5132 | 1435 | |
4670103e CZ |
1436 | frag_var (rs_machine_dependent, FRAG_MAX_GROWTH, 0, |
1437 | subtype, s, 0, 0); | |
1438 | } | |
1439 | else | |
1440 | frag_var (rs_machine_dependent, FRAG_MAX_GROWTH, 0, | |
1441 | frag_now->fr_subtype, s, 0, 0); | |
1442 | } | |
252b5132 | 1443 | |
4670103e CZ |
1444 | static void |
1445 | emit_insn (struct arc_insn *insn) | |
252b5132 | 1446 | { |
4670103e CZ |
1447 | if (insn->relax) |
1448 | emit_insn1 (insn); | |
252b5132 | 1449 | else |
4670103e | 1450 | emit_insn0 (insn, NULL, FALSE); |
252b5132 RH |
1451 | } |
1452 | ||
4670103e | 1453 | /* Check whether a symbol involves a register. */ |
252b5132 | 1454 | |
4670103e CZ |
1455 | static bfd_boolean |
1456 | contains_register (symbolS *sym) | |
252b5132 | 1457 | { |
4670103e CZ |
1458 | if (sym) |
1459 | { | |
1460 | expressionS *ex = symbol_get_value_expression (sym); | |
252b5132 | 1461 | |
4670103e CZ |
1462 | return ((O_register == ex->X_op) |
1463 | && !contains_register (ex->X_add_symbol) | |
1464 | && !contains_register (ex->X_op_symbol)); | |
1465 | } | |
1466 | ||
1467 | return FALSE; | |
252b5132 RH |
1468 | } |
1469 | ||
4670103e | 1470 | /* Returns the register number within a symbol. */ |
252b5132 | 1471 | |
4670103e CZ |
1472 | static int |
1473 | get_register (symbolS *sym) | |
252b5132 | 1474 | { |
4670103e CZ |
1475 | if (!contains_register (sym)) |
1476 | return -1; | |
0d2bcfaf | 1477 | |
4670103e CZ |
1478 | expressionS *ex = symbol_get_value_expression (sym); |
1479 | return regno (ex->X_add_number); | |
1480 | } | |
252b5132 | 1481 | |
4670103e CZ |
1482 | /* Return true if a RELOC is generic. A generic reloc is PC-rel of a |
1483 | simple ME relocation (e.g. RELOC_ARC_32_ME, BFD_RELOC_ARC_PC32. */ | |
f17c130b | 1484 | |
4670103e CZ |
1485 | static bfd_boolean |
1486 | generic_reloc_p (extended_bfd_reloc_code_real_type reloc) | |
1487 | { | |
1488 | if (!reloc) | |
1489 | return FALSE; | |
886a2506 | 1490 | |
4670103e CZ |
1491 | switch (reloc) |
1492 | { | |
1493 | case BFD_RELOC_ARC_SDA_LDST: | |
1494 | case BFD_RELOC_ARC_SDA_LDST1: | |
1495 | case BFD_RELOC_ARC_SDA_LDST2: | |
1496 | case BFD_RELOC_ARC_SDA16_LD: | |
1497 | case BFD_RELOC_ARC_SDA16_LD1: | |
1498 | case BFD_RELOC_ARC_SDA16_LD2: | |
1499 | case BFD_RELOC_ARC_SDA16_ST2: | |
1500 | case BFD_RELOC_ARC_SDA32_ME: | |
1501 | return FALSE; | |
1502 | default: | |
1503 | return TRUE; | |
f17c130b | 1504 | } |
252b5132 RH |
1505 | } |
1506 | ||
4670103e | 1507 | /* Allocates a tok entry. */ |
252b5132 | 1508 | |
4670103e CZ |
1509 | static int |
1510 | allocate_tok (expressionS *tok, int ntok, int cidx) | |
252b5132 | 1511 | { |
4670103e CZ |
1512 | if (ntok > MAX_INSN_ARGS - 2) |
1513 | return 0; /* No space left. */ | |
252b5132 | 1514 | |
4670103e CZ |
1515 | if (cidx > ntok) |
1516 | return 0; /* Incorect args. */ | |
252b5132 | 1517 | |
4670103e | 1518 | memcpy (&tok[ntok+1], &tok[ntok], sizeof (*tok)); |
252b5132 | 1519 | |
4670103e CZ |
1520 | if (cidx == ntok) |
1521 | return 1; /* Success. */ | |
1522 | return allocate_tok (tok, ntok - 1, cidx); | |
1523 | } | |
886a2506 | 1524 | |
8ddf6b2a CZ |
1525 | /* Check if an particular ARC feature is enabled. */ |
1526 | ||
1527 | static bfd_boolean | |
1528 | check_cpu_feature (insn_subclass_t sc) | |
1529 | { | |
1530 | if (!(arc_features & ARC_CD) | |
1531 | && is_code_density_p (sc)) | |
1532 | return FALSE; | |
1533 | ||
1534 | if (!(arc_features & ARC_SPFP) | |
1535 | && is_spfp_p (sc)) | |
1536 | return FALSE; | |
1537 | ||
1538 | if (!(arc_features & ARC_DPFP) | |
1539 | && is_dpfp_p (sc)) | |
1540 | return FALSE; | |
1541 | ||
1542 | if (!(arc_features & ARC_FPUDA) | |
1543 | && is_fpuda_p (sc)) | |
1544 | return FALSE; | |
1545 | ||
1546 | return TRUE; | |
1547 | } | |
1548 | ||
4670103e CZ |
1549 | /* Search forward through all variants of an opcode looking for a |
1550 | syntax match. */ | |
886a2506 | 1551 | |
4670103e | 1552 | static const struct arc_opcode * |
b9b47ab7 | 1553 | find_opcode_match (const struct arc_opcode_hash_entry *entry, |
4670103e CZ |
1554 | expressionS *tok, |
1555 | int *pntok, | |
1556 | struct arc_flags *first_pflag, | |
1557 | int nflgs, | |
1558 | int *pcpumatch) | |
1559 | { | |
1328504b AB |
1560 | const struct arc_opcode *opcode; |
1561 | struct arc_opcode_hash_entry_iterator iter; | |
4670103e CZ |
1562 | int ntok = *pntok; |
1563 | int got_cpu_match = 0; | |
1564 | expressionS bktok[MAX_INSN_ARGS]; | |
1565 | int bkntok; | |
1566 | expressionS emptyE; | |
886a2506 | 1567 | |
1328504b | 1568 | arc_opcode_hash_entry_iterator_init (&iter); |
4670103e CZ |
1569 | memset (&emptyE, 0, sizeof (emptyE)); |
1570 | memcpy (bktok, tok, MAX_INSN_ARGS * sizeof (*tok)); | |
1571 | bkntok = ntok; | |
a161fe53 | 1572 | |
1328504b AB |
1573 | for (opcode = arc_opcode_hash_entry_iterator_next (entry, &iter); |
1574 | opcode != NULL; | |
1575 | opcode = arc_opcode_hash_entry_iterator_next (entry, &iter)) | |
252b5132 | 1576 | { |
4670103e CZ |
1577 | const unsigned char *opidx; |
1578 | const unsigned char *flgidx; | |
1ae8ab47 | 1579 | int tokidx = 0, lnflg, i; |
4670103e | 1580 | const expressionS *t = &emptyE; |
252b5132 | 1581 | |
4670103e CZ |
1582 | pr_debug ("%s:%d: find_opcode_match: trying opcode 0x%08X ", |
1583 | frag_now->fr_file, frag_now->fr_line, opcode->opcode); | |
886a2506 | 1584 | |
4670103e CZ |
1585 | /* Don't match opcodes that don't exist on this |
1586 | architecture. */ | |
1587 | if (!(opcode->cpu & arc_target)) | |
1588 | goto match_failed; | |
886a2506 | 1589 | |
8ddf6b2a | 1590 | if (!check_cpu_feature (opcode->subclass)) |
4670103e | 1591 | goto match_failed; |
886a2506 | 1592 | |
4670103e CZ |
1593 | got_cpu_match = 1; |
1594 | pr_debug ("cpu "); | |
886a2506 | 1595 | |
4670103e CZ |
1596 | /* Check the operands. */ |
1597 | for (opidx = opcode->operands; *opidx; ++opidx) | |
252b5132 | 1598 | { |
4670103e | 1599 | const struct arc_operand *operand = &arc_operands[*opidx]; |
252b5132 | 1600 | |
4670103e CZ |
1601 | /* Only take input from real operands. */ |
1602 | if ((operand->flags & ARC_OPERAND_FAKE) | |
1603 | && !(operand->flags & ARC_OPERAND_BRAKET)) | |
1604 | continue; | |
252b5132 | 1605 | |
4670103e CZ |
1606 | /* When we expect input, make sure we have it. */ |
1607 | if (tokidx >= ntok) | |
1608 | goto match_failed; | |
6f4b1afc | 1609 | |
4670103e CZ |
1610 | /* Match operand type with expression type. */ |
1611 | switch (operand->flags & ARC_OPERAND_TYPECHECK_MASK) | |
1612 | { | |
1613 | case ARC_OPERAND_IR: | |
1614 | /* Check to be a register. */ | |
1615 | if ((tok[tokidx].X_op != O_register | |
1616 | || !is_ir_num (tok[tokidx].X_add_number)) | |
1617 | && !(operand->flags & ARC_OPERAND_IGNORE)) | |
1618 | goto match_failed; | |
1619 | ||
1620 | /* If expect duplicate, make sure it is duplicate. */ | |
1621 | if (operand->flags & ARC_OPERAND_DUPLICATE) | |
1622 | { | |
1623 | /* Check for duplicate. */ | |
1624 | if (t->X_op != O_register | |
1625 | || !is_ir_num (t->X_add_number) | |
1626 | || (regno (t->X_add_number) != | |
1627 | regno (tok[tokidx].X_add_number))) | |
1628 | goto match_failed; | |
1629 | } | |
1630 | ||
1631 | /* Special handling? */ | |
1632 | if (operand->insert) | |
1633 | { | |
1634 | const char *errmsg = NULL; | |
1635 | (*operand->insert)(0, | |
1636 | regno (tok[tokidx].X_add_number), | |
1637 | &errmsg); | |
1638 | if (errmsg) | |
1639 | { | |
1640 | if (operand->flags & ARC_OPERAND_IGNORE) | |
1641 | { | |
1642 | /* Missing argument, create one. */ | |
1643 | if (!allocate_tok (tok, ntok - 1, tokidx)) | |
1644 | goto match_failed; | |
1645 | ||
1646 | tok[tokidx].X_op = O_absent; | |
1647 | ++ntok; | |
1648 | } | |
1649 | else | |
1650 | goto match_failed; | |
1651 | } | |
1652 | } | |
1653 | ||
1654 | t = &tok[tokidx]; | |
1655 | break; | |
1656 | ||
1657 | case ARC_OPERAND_BRAKET: | |
1658 | /* Check if bracket is also in opcode table as | |
1659 | operand. */ | |
1660 | if (tok[tokidx].X_op != O_bracket) | |
1661 | goto match_failed; | |
1662 | break; | |
1663 | ||
1664 | case ARC_OPERAND_LIMM: | |
1665 | case ARC_OPERAND_SIGNED: | |
1666 | case ARC_OPERAND_UNSIGNED: | |
1667 | switch (tok[tokidx].X_op) | |
1668 | { | |
1669 | case O_illegal: | |
1670 | case O_absent: | |
1671 | case O_register: | |
1672 | goto match_failed; | |
1673 | ||
1674 | case O_bracket: | |
1675 | /* Got an (too) early bracket, check if it is an | |
1676 | ignored operand. N.B. This procedure works only | |
1677 | when bracket is the last operand! */ | |
1678 | if (!(operand->flags & ARC_OPERAND_IGNORE)) | |
1679 | goto match_failed; | |
1680 | /* Insert the missing operand. */ | |
1681 | if (!allocate_tok (tok, ntok - 1, tokidx)) | |
1682 | goto match_failed; | |
1683 | ||
1684 | tok[tokidx].X_op = O_absent; | |
1685 | ++ntok; | |
1686 | break; | |
1687 | ||
22b92fc4 AB |
1688 | case O_symbol: |
1689 | { | |
1690 | const char *p; | |
22b92fc4 | 1691 | const struct arc_aux_reg *auxr; |
22b92fc4 AB |
1692 | |
1693 | if (opcode->class != AUXREG) | |
1694 | goto de_fault; | |
1695 | p = S_GET_NAME (tok[tokidx].X_add_symbol); | |
f36e33da CZ |
1696 | |
1697 | auxr = hash_find (arc_aux_hash, p); | |
1698 | if (auxr) | |
1699 | { | |
1700 | /* We modify the token array here, safe in the | |
1701 | knowledge, that if this was the wrong | |
1702 | choice then the original contents will be | |
1703 | restored from BKTOK. */ | |
1704 | tok[tokidx].X_op = O_constant; | |
1705 | tok[tokidx].X_add_number = auxr->address; | |
1706 | ARC_SET_FLAG (tok[tokidx].X_add_symbol, ARC_FLAG_AUX); | |
1707 | } | |
22b92fc4 AB |
1708 | |
1709 | if (tok[tokidx].X_op != O_constant) | |
1710 | goto de_fault; | |
1711 | } | |
1712 | /* Fall-through */ | |
4670103e CZ |
1713 | case O_constant: |
1714 | /* Check the range. */ | |
1715 | if (operand->bits != 32 | |
1716 | && !(operand->flags & ARC_OPERAND_NCHK)) | |
1717 | { | |
1718 | offsetT min, max, val; | |
1719 | val = tok[tokidx].X_add_number; | |
1720 | ||
1721 | if (operand->flags & ARC_OPERAND_SIGNED) | |
1722 | { | |
1723 | max = (1 << (operand->bits - 1)) - 1; | |
1724 | min = -(1 << (operand->bits - 1)); | |
1725 | } | |
1726 | else | |
1727 | { | |
1728 | max = (1 << operand->bits) - 1; | |
1729 | min = 0; | |
1730 | } | |
1731 | ||
1732 | if (val < min || val > max) | |
1733 | goto match_failed; | |
1734 | ||
1735 | /* Check alignmets. */ | |
1736 | if ((operand->flags & ARC_OPERAND_ALIGNED32) | |
1737 | && (val & 0x03)) | |
1738 | goto match_failed; | |
1739 | ||
1740 | if ((operand->flags & ARC_OPERAND_ALIGNED16) | |
1741 | && (val & 0x01)) | |
1742 | goto match_failed; | |
1743 | } | |
1744 | else if (operand->flags & ARC_OPERAND_NCHK) | |
1745 | { | |
1746 | if (operand->insert) | |
1747 | { | |
1748 | const char *errmsg = NULL; | |
1749 | (*operand->insert)(0, | |
1750 | tok[tokidx].X_add_number, | |
1751 | &errmsg); | |
1752 | if (errmsg) | |
1753 | goto match_failed; | |
1754 | } | |
1755 | else | |
1756 | goto match_failed; | |
1757 | } | |
1758 | break; | |
1759 | ||
1760 | case O_subtract: | |
1761 | /* Check if it is register range. */ | |
1762 | if ((tok[tokidx].X_add_number == 0) | |
1763 | && contains_register (tok[tokidx].X_add_symbol) | |
1764 | && contains_register (tok[tokidx].X_op_symbol)) | |
1765 | { | |
1766 | int regs; | |
1767 | ||
1768 | regs = get_register (tok[tokidx].X_add_symbol); | |
1769 | regs <<= 16; | |
1770 | regs |= get_register (tok[tokidx].X_op_symbol); | |
1771 | if (operand->insert) | |
1772 | { | |
1773 | const char *errmsg = NULL; | |
1774 | (*operand->insert)(0, | |
1775 | regs, | |
1776 | &errmsg); | |
1777 | if (errmsg) | |
1778 | goto match_failed; | |
1779 | } | |
1780 | else | |
1781 | goto match_failed; | |
1782 | break; | |
1783 | } | |
1784 | default: | |
22b92fc4 | 1785 | de_fault: |
4670103e CZ |
1786 | if (operand->default_reloc == 0) |
1787 | goto match_failed; /* The operand needs relocation. */ | |
1788 | ||
1789 | /* Relocs requiring long immediate. FIXME! make it | |
1790 | generic and move it to a function. */ | |
1791 | switch (tok[tokidx].X_md) | |
1792 | { | |
1793 | case O_gotoff: | |
1794 | case O_gotpc: | |
1795 | case O_pcl: | |
1796 | case O_tpoff: | |
1797 | case O_dtpoff: | |
1798 | case O_tlsgd: | |
1799 | case O_tlsie: | |
1800 | if (!(operand->flags & ARC_OPERAND_LIMM)) | |
1801 | goto match_failed; | |
1802 | case O_absent: | |
1803 | if (!generic_reloc_p (operand->default_reloc)) | |
1804 | goto match_failed; | |
1805 | default: | |
1806 | break; | |
1807 | } | |
1808 | break; | |
1809 | } | |
1810 | /* If expect duplicate, make sure it is duplicate. */ | |
1811 | if (operand->flags & ARC_OPERAND_DUPLICATE) | |
1812 | { | |
1813 | if (t->X_op == O_illegal | |
1814 | || t->X_op == O_absent | |
1815 | || t->X_op == O_register | |
1816 | || (t->X_add_number != tok[tokidx].X_add_number)) | |
1817 | goto match_failed; | |
1818 | } | |
1819 | t = &tok[tokidx]; | |
1820 | break; | |
1821 | ||
1822 | default: | |
1823 | /* Everything else should have been fake. */ | |
1824 | abort (); | |
1825 | } | |
1826 | ||
1827 | ++tokidx; | |
1828 | } | |
1829 | pr_debug ("opr "); | |
1830 | ||
1ae8ab47 AB |
1831 | /* Setup ready for flag parsing. */ |
1832 | lnflg = nflgs; | |
1833 | for (i = 0; i < nflgs; i++) | |
f36e33da | 1834 | first_pflag[i].flgp = NULL; |
4670103e | 1835 | |
1ae8ab47 AB |
1836 | /* Check the flags. Iterate over the valid flag classes. */ |
1837 | for (flgidx = opcode->flags; *flgidx; ++flgidx) | |
4670103e CZ |
1838 | { |
1839 | /* Get a valid flag class. */ | |
1840 | const struct arc_flag_class *cl_flags = &arc_flag_classes[*flgidx]; | |
1841 | const unsigned *flgopridx; | |
1ae8ab47 | 1842 | int cl_matches = 0; |
f36e33da CZ |
1843 | struct arc_flags *pflag = NULL; |
1844 | ||
1845 | /* Check for extension conditional codes. */ | |
1846 | if (ext_condcode.arc_ext_condcode | |
1847 | && cl_flags->class & F_CLASS_EXTEND) | |
1848 | { | |
1849 | struct arc_flag_operand *pf = ext_condcode.arc_ext_condcode; | |
1850 | while (pf->name) | |
1851 | { | |
1852 | pflag = first_pflag; | |
1853 | for (i = 0; i < nflgs; i++, pflag++) | |
1854 | { | |
1855 | if (!strcmp (pf->name, pflag->name)) | |
1856 | { | |
1857 | if (pflag->flgp != NULL) | |
1858 | goto match_failed; | |
1859 | /* Found it. */ | |
1860 | cl_matches++; | |
1861 | pflag->flgp = pf; | |
1862 | lnflg--; | |
1863 | break; | |
1864 | } | |
1865 | } | |
1866 | pf++; | |
1867 | } | |
1868 | } | |
4670103e CZ |
1869 | |
1870 | for (flgopridx = cl_flags->flags; *flgopridx; ++flgopridx) | |
1871 | { | |
1872 | const struct arc_flag_operand *flg_operand; | |
4670103e | 1873 | |
f36e33da | 1874 | pflag = first_pflag; |
4670103e CZ |
1875 | flg_operand = &arc_flag_operands[*flgopridx]; |
1876 | for (i = 0; i < nflgs; i++, pflag++) | |
1877 | { | |
1878 | /* Match against the parsed flags. */ | |
1879 | if (!strcmp (flg_operand->name, pflag->name)) | |
1880 | { | |
f36e33da | 1881 | if (pflag->flgp != NULL) |
1ae8ab47 AB |
1882 | goto match_failed; |
1883 | cl_matches++; | |
f36e33da | 1884 | pflag->flgp = (struct arc_flag_operand *) flg_operand; |
4670103e CZ |
1885 | lnflg--; |
1886 | break; /* goto next flag class and parsed flag. */ | |
1887 | } | |
1888 | } | |
1889 | } | |
1ae8ab47 | 1890 | |
f36e33da | 1891 | if ((cl_flags->class & F_CLASS_REQUIRED) && cl_matches == 0) |
1ae8ab47 | 1892 | goto match_failed; |
f36e33da | 1893 | if ((cl_flags->class & F_CLASS_OPTIONAL) && cl_matches > 1) |
1ae8ab47 | 1894 | goto match_failed; |
4670103e CZ |
1895 | } |
1896 | /* Did I check all the parsed flags? */ | |
1897 | if (lnflg) | |
1898 | goto match_failed; | |
1899 | ||
1900 | pr_debug ("flg"); | |
1901 | /* Possible match -- did we use all of our input? */ | |
1902 | if (tokidx == ntok) | |
1903 | { | |
1904 | *pntok = ntok; | |
1905 | pr_debug ("\n"); | |
1906 | return opcode; | |
1907 | } | |
1908 | ||
1909 | match_failed:; | |
1910 | pr_debug ("\n"); | |
1911 | /* Restore the original parameters. */ | |
1912 | memcpy (tok, bktok, MAX_INSN_ARGS * sizeof (*tok)); | |
1913 | ntok = bkntok; | |
1914 | } | |
4670103e CZ |
1915 | |
1916 | if (*pcpumatch) | |
1917 | *pcpumatch = got_cpu_match; | |
1918 | ||
1919 | return NULL; | |
1920 | } | |
1921 | ||
1922 | /* Swap operand tokens. */ | |
1923 | ||
1924 | static void | |
1925 | swap_operand (expressionS *operand_array, | |
1926 | unsigned source, | |
1927 | unsigned destination) | |
1928 | { | |
1929 | expressionS cpy_operand; | |
1930 | expressionS *src_operand; | |
1931 | expressionS *dst_operand; | |
1932 | size_t size; | |
1933 | ||
1934 | if (source == destination) | |
1935 | return; | |
1936 | ||
1937 | src_operand = &operand_array[source]; | |
1938 | dst_operand = &operand_array[destination]; | |
1939 | size = sizeof (expressionS); | |
1940 | ||
1941 | /* Make copy of operand to swap with and swap. */ | |
1942 | memcpy (&cpy_operand, dst_operand, size); | |
1943 | memcpy (dst_operand, src_operand, size); | |
1944 | memcpy (src_operand, &cpy_operand, size); | |
1945 | } | |
1946 | ||
1947 | /* Check if *op matches *tok type. | |
1948 | Returns FALSE if they don't match, TRUE if they match. */ | |
1949 | ||
1950 | static bfd_boolean | |
1951 | pseudo_operand_match (const expressionS *tok, | |
1952 | const struct arc_operand_operation *op) | |
1953 | { | |
1954 | offsetT min, max, val; | |
1955 | bfd_boolean ret; | |
1956 | const struct arc_operand *operand_real = &arc_operands[op->operand_idx]; | |
1957 | ||
1958 | ret = FALSE; | |
1959 | switch (tok->X_op) | |
1960 | { | |
1961 | case O_constant: | |
1962 | if (operand_real->bits == 32 && (operand_real->flags & ARC_OPERAND_LIMM)) | |
1963 | ret = 1; | |
1964 | else if (!(operand_real->flags & ARC_OPERAND_IR)) | |
1965 | { | |
1966 | val = tok->X_add_number + op->count; | |
1967 | if (operand_real->flags & ARC_OPERAND_SIGNED) | |
1968 | { | |
1969 | max = (1 << (operand_real->bits - 1)) - 1; | |
1970 | min = -(1 << (operand_real->bits - 1)); | |
1971 | } | |
1972 | else | |
1973 | { | |
1974 | max = (1 << operand_real->bits) - 1; | |
1975 | min = 0; | |
1976 | } | |
1977 | if (min <= val && val <= max) | |
1978 | ret = TRUE; | |
1979 | } | |
6f4b1afc CM |
1980 | break; |
1981 | ||
4670103e CZ |
1982 | case O_symbol: |
1983 | /* Handle all symbols as long immediates or signed 9. */ | |
1984 | if (operand_real->flags & ARC_OPERAND_LIMM || | |
1985 | ((operand_real->flags & ARC_OPERAND_SIGNED) && operand_real->bits == 9)) | |
1986 | ret = TRUE; | |
6f4b1afc CM |
1987 | break; |
1988 | ||
4670103e CZ |
1989 | case O_register: |
1990 | if (operand_real->flags & ARC_OPERAND_IR) | |
1991 | ret = TRUE; | |
1992 | break; | |
1993 | ||
1994 | case O_bracket: | |
1995 | if (operand_real->flags & ARC_OPERAND_BRAKET) | |
1996 | ret = TRUE; | |
6f4b1afc CM |
1997 | break; |
1998 | ||
1999 | default: | |
4670103e | 2000 | /* Unknown. */ |
6f4b1afc CM |
2001 | break; |
2002 | } | |
4670103e CZ |
2003 | return ret; |
2004 | } | |
6f4b1afc | 2005 | |
4670103e CZ |
2006 | /* Find pseudo instruction in array. */ |
2007 | ||
2008 | static const struct arc_pseudo_insn * | |
2009 | find_pseudo_insn (const char *opname, | |
2010 | int ntok, | |
2011 | const expressionS *tok) | |
2012 | { | |
2013 | const struct arc_pseudo_insn *pseudo_insn = NULL; | |
2014 | const struct arc_operand_operation *op; | |
2015 | unsigned int i; | |
2016 | int j; | |
2017 | ||
2018 | for (i = 0; i < arc_num_pseudo_insn; ++i) | |
6f4b1afc | 2019 | { |
4670103e CZ |
2020 | pseudo_insn = &arc_pseudo_insns[i]; |
2021 | if (strcmp (pseudo_insn->mnemonic_p, opname) == 0) | |
2022 | { | |
2023 | op = pseudo_insn->operand; | |
2024 | for (j = 0; j < ntok; ++j) | |
2025 | if (!pseudo_operand_match (&tok[j], &op[j])) | |
2026 | break; | |
2027 | ||
2028 | /* Found the right instruction. */ | |
2029 | if (j == ntok) | |
2030 | return pseudo_insn; | |
2031 | } | |
6f4b1afc | 2032 | } |
4670103e CZ |
2033 | return NULL; |
2034 | } | |
252b5132 | 2035 | |
4670103e | 2036 | /* Assumes the expressionS *tok is of sufficient size. */ |
252b5132 | 2037 | |
b9b47ab7 | 2038 | static const struct arc_opcode_hash_entry * |
4670103e CZ |
2039 | find_special_case_pseudo (const char *opname, |
2040 | int *ntok, | |
2041 | expressionS *tok, | |
2042 | int *nflgs, | |
2043 | struct arc_flags *pflags) | |
2044 | { | |
2045 | const struct arc_pseudo_insn *pseudo_insn = NULL; | |
2046 | const struct arc_operand_operation *operand_pseudo; | |
2047 | const struct arc_operand *operand_real; | |
2048 | unsigned i; | |
2049 | char construct_operand[MAX_CONSTR_STR]; | |
886a2506 | 2050 | |
4670103e CZ |
2051 | /* Find whether opname is in pseudo instruction array. */ |
2052 | pseudo_insn = find_pseudo_insn (opname, *ntok, tok); | |
2053 | ||
2054 | if (pseudo_insn == NULL) | |
2055 | return NULL; | |
2056 | ||
2057 | /* Handle flag, Limited to one flag at the moment. */ | |
2058 | if (pseudo_insn->flag_r != NULL) | |
2059 | *nflgs += tokenize_flags (pseudo_insn->flag_r, &pflags[*nflgs], | |
2060 | MAX_INSN_FLGS - *nflgs); | |
2061 | ||
2062 | /* Handle operand operations. */ | |
2063 | for (i = 0; i < pseudo_insn->operand_cnt; ++i) | |
252b5132 | 2064 | { |
4670103e CZ |
2065 | operand_pseudo = &pseudo_insn->operand[i]; |
2066 | operand_real = &arc_operands[operand_pseudo->operand_idx]; | |
886a2506 | 2067 | |
4670103e CZ |
2068 | if (operand_real->flags & ARC_OPERAND_BRAKET && |
2069 | !operand_pseudo->needs_insert) | |
2070 | continue; | |
b125bd17 | 2071 | |
4670103e CZ |
2072 | /* Has to be inserted (i.e. this token does not exist yet). */ |
2073 | if (operand_pseudo->needs_insert) | |
2074 | { | |
2075 | if (operand_real->flags & ARC_OPERAND_BRAKET) | |
2076 | { | |
2077 | tok[i].X_op = O_bracket; | |
2078 | ++(*ntok); | |
2079 | continue; | |
2080 | } | |
b125bd17 | 2081 | |
4670103e CZ |
2082 | /* Check if operand is a register or constant and handle it |
2083 | by type. */ | |
2084 | if (operand_real->flags & ARC_OPERAND_IR) | |
2085 | snprintf (construct_operand, MAX_CONSTR_STR, "r%d", | |
2086 | operand_pseudo->count); | |
2087 | else | |
2088 | snprintf (construct_operand, MAX_CONSTR_STR, "%d", | |
2089 | operand_pseudo->count); | |
886a2506 | 2090 | |
4670103e CZ |
2091 | tokenize_arguments (construct_operand, &tok[i], 1); |
2092 | ++(*ntok); | |
2093 | } | |
2094 | ||
2095 | else if (operand_pseudo->count) | |
2096 | { | |
2097 | /* Operand number has to be adjusted accordingly (by operand | |
2098 | type). */ | |
2099 | switch (tok[i].X_op) | |
2100 | { | |
2101 | case O_constant: | |
2102 | tok[i].X_add_number += operand_pseudo->count; | |
2103 | break; | |
2104 | ||
2105 | case O_symbol: | |
2106 | break; | |
2107 | ||
2108 | default: | |
2109 | /* Ignored. */ | |
2110 | break; | |
2111 | } | |
2112 | } | |
2113 | } | |
2114 | ||
2115 | /* Swap operands if necessary. Only supports one swap at the | |
2116 | moment. */ | |
2117 | for (i = 0; i < pseudo_insn->operand_cnt; ++i) | |
2118 | { | |
2119 | operand_pseudo = &pseudo_insn->operand[i]; | |
2120 | ||
2121 | if (operand_pseudo->swap_operand_idx == i) | |
2122 | continue; | |
2123 | ||
2124 | swap_operand (tok, i, operand_pseudo->swap_operand_idx); | |
2125 | ||
2126 | /* Prevent a swap back later by breaking out. */ | |
2127 | break; | |
2128 | } | |
2129 | ||
da5be039 | 2130 | return arc_find_opcode (pseudo_insn->mnemonic_r); |
4670103e CZ |
2131 | } |
2132 | ||
b9b47ab7 | 2133 | static const struct arc_opcode_hash_entry * |
4670103e CZ |
2134 | find_special_case_flag (const char *opname, |
2135 | int *nflgs, | |
2136 | struct arc_flags *pflags) | |
2137 | { | |
2138 | unsigned int i; | |
2139 | const char *flagnm; | |
2140 | unsigned flag_idx, flag_arr_idx; | |
2141 | size_t flaglen, oplen; | |
2142 | const struct arc_flag_special *arc_flag_special_opcode; | |
b9b47ab7 | 2143 | const struct arc_opcode_hash_entry *entry; |
4670103e CZ |
2144 | |
2145 | /* Search for special case instruction. */ | |
2146 | for (i = 0; i < arc_num_flag_special; i++) | |
2147 | { | |
2148 | arc_flag_special_opcode = &arc_flag_special_cases[i]; | |
2149 | oplen = strlen (arc_flag_special_opcode->name); | |
2150 | ||
2151 | if (strncmp (opname, arc_flag_special_opcode->name, oplen) != 0) | |
2152 | continue; | |
2153 | ||
2154 | /* Found a potential special case instruction, now test for | |
2155 | flags. */ | |
2156 | for (flag_arr_idx = 0;; ++flag_arr_idx) | |
2157 | { | |
2158 | flag_idx = arc_flag_special_opcode->flags[flag_arr_idx]; | |
2159 | if (flag_idx == 0) | |
2160 | break; /* End of array, nothing found. */ | |
886a2506 | 2161 | |
4670103e CZ |
2162 | flagnm = arc_flag_operands[flag_idx].name; |
2163 | flaglen = strlen (flagnm); | |
2164 | if (strcmp (opname + oplen, flagnm) == 0) | |
2165 | { | |
b9b47ab7 | 2166 | entry = arc_find_opcode (arc_flag_special_opcode->name); |
886a2506 | 2167 | |
4670103e CZ |
2168 | if (*nflgs + 1 > MAX_INSN_FLGS) |
2169 | break; | |
2170 | memcpy (pflags[*nflgs].name, flagnm, flaglen); | |
2171 | pflags[*nflgs].name[flaglen] = '\0'; | |
2172 | (*nflgs)++; | |
b9b47ab7 | 2173 | return entry; |
4670103e CZ |
2174 | } |
2175 | } | |
2176 | } | |
2177 | return NULL; | |
2178 | } | |
886a2506 | 2179 | |
4670103e | 2180 | /* Used to find special case opcode. */ |
886a2506 | 2181 | |
b9b47ab7 | 2182 | static const struct arc_opcode_hash_entry * |
4670103e CZ |
2183 | find_special_case (const char *opname, |
2184 | int *nflgs, | |
2185 | struct arc_flags *pflags, | |
2186 | expressionS *tok, | |
2187 | int *ntok) | |
2188 | { | |
b9b47ab7 | 2189 | const struct arc_opcode_hash_entry *entry; |
886a2506 | 2190 | |
b9b47ab7 | 2191 | entry = find_special_case_pseudo (opname, ntok, tok, nflgs, pflags); |
886a2506 | 2192 | |
b9b47ab7 AB |
2193 | if (entry == NULL) |
2194 | entry = find_special_case_flag (opname, nflgs, pflags); | |
886a2506 | 2195 | |
b9b47ab7 | 2196 | return entry; |
4670103e | 2197 | } |
886a2506 | 2198 | |
4670103e CZ |
2199 | /* Given an opcode name, pre-tockenized set of argumenst and the |
2200 | opcode flags, take it all the way through emission. */ | |
886a2506 | 2201 | |
4670103e CZ |
2202 | static void |
2203 | assemble_tokens (const char *opname, | |
2204 | expressionS *tok, | |
2205 | int ntok, | |
2206 | struct arc_flags *pflags, | |
2207 | int nflgs) | |
2208 | { | |
2209 | bfd_boolean found_something = FALSE; | |
b9b47ab7 | 2210 | const struct arc_opcode_hash_entry *entry; |
4670103e | 2211 | int cpumatch = 1; |
886a2506 | 2212 | |
4670103e | 2213 | /* Search opcodes. */ |
b9b47ab7 | 2214 | entry = arc_find_opcode (opname); |
886a2506 | 2215 | |
4670103e | 2216 | /* Couldn't find opcode conventional way, try special cases. */ |
b9b47ab7 AB |
2217 | if (entry == NULL) |
2218 | entry = find_special_case (opname, &nflgs, pflags, tok, &ntok); | |
886a2506 | 2219 | |
b9b47ab7 | 2220 | if (entry != NULL) |
4670103e | 2221 | { |
b9b47ab7 AB |
2222 | const struct arc_opcode *opcode; |
2223 | ||
1328504b AB |
2224 | pr_debug ("%s:%d: assemble_tokens: %s\n", |
2225 | frag_now->fr_file, frag_now->fr_line, opname); | |
4670103e | 2226 | found_something = TRUE; |
b9b47ab7 AB |
2227 | opcode = find_opcode_match (entry, tok, &ntok, pflags, |
2228 | nflgs, &cpumatch); | |
2229 | if (opcode != NULL) | |
4670103e CZ |
2230 | { |
2231 | struct arc_insn insn; | |
b9b47ab7 | 2232 | |
4670103e CZ |
2233 | assemble_insn (opcode, tok, ntok, pflags, nflgs, &insn); |
2234 | emit_insn (&insn); | |
2235 | return; | |
2236 | } | |
2237 | } | |
886a2506 | 2238 | |
4670103e CZ |
2239 | if (found_something) |
2240 | { | |
2241 | if (cpumatch) | |
2242 | as_bad (_("inappropriate arguments for opcode '%s'"), opname); | |
2243 | else | |
2244 | as_bad (_("opcode '%s' not supported for target %s"), opname, | |
2245 | arc_target_name); | |
2246 | } | |
2247 | else | |
2248 | as_bad (_("unknown opcode '%s'"), opname); | |
886a2506 NC |
2249 | } |
2250 | ||
4670103e | 2251 | /* The public interface to the instruction assembler. */ |
886a2506 | 2252 | |
4670103e CZ |
2253 | void |
2254 | md_assemble (char *str) | |
886a2506 | 2255 | { |
4670103e CZ |
2256 | char *opname; |
2257 | expressionS tok[MAX_INSN_ARGS]; | |
2258 | int ntok, nflg; | |
2259 | size_t opnamelen; | |
2260 | struct arc_flags flags[MAX_INSN_FLGS]; | |
886a2506 | 2261 | |
4670103e CZ |
2262 | /* Split off the opcode. */ |
2263 | opnamelen = strspn (str, "abcdefghijklmnopqrstuvwxyz_0123468"); | |
29a2809e | 2264 | opname = xmemdup0 (str, opnamelen); |
886a2506 | 2265 | |
4670103e CZ |
2266 | /* Signalize we are assmbling the instructions. */ |
2267 | assembling_insn = TRUE; | |
886a2506 | 2268 | |
4670103e CZ |
2269 | /* Tokenize the flags. */ |
2270 | if ((nflg = tokenize_flags (str + opnamelen, flags, MAX_INSN_FLGS)) == -1) | |
2271 | { | |
2272 | as_bad (_("syntax error")); | |
2273 | return; | |
2274 | } | |
886a2506 | 2275 | |
4670103e CZ |
2276 | /* Scan up to the end of the mnemonic which must end in space or end |
2277 | of string. */ | |
2278 | str += opnamelen; | |
2279 | for (; *str != '\0'; str++) | |
2280 | if (*str == ' ') | |
2281 | break; | |
886a2506 | 2282 | |
4670103e CZ |
2283 | /* Tokenize the rest of the line. */ |
2284 | if ((ntok = tokenize_arguments (str, tok, MAX_INSN_ARGS)) < 0) | |
886a2506 | 2285 | { |
4670103e CZ |
2286 | as_bad (_("syntax error")); |
2287 | return; | |
252b5132 RH |
2288 | } |
2289 | ||
4670103e CZ |
2290 | /* Finish it off. */ |
2291 | assemble_tokens (opname, tok, ntok, flags, nflg); | |
2292 | assembling_insn = FALSE; | |
2293 | } | |
2294 | ||
2295 | /* Callback to insert a register into the hash table. */ | |
2296 | ||
2297 | static void | |
f86f5863 | 2298 | declare_register (const char *name, int number) |
4670103e CZ |
2299 | { |
2300 | const char *err; | |
2301 | symbolS *regS = symbol_create (name, reg_section, | |
2302 | number, &zero_address_frag); | |
2303 | ||
2304 | err = hash_insert (arc_reg_hash, S_GET_NAME (regS), (void *) regS); | |
2305 | if (err) | |
e6ba1cba | 2306 | as_fatal (_("Inserting \"%s\" into register table failed: %s"), |
4670103e CZ |
2307 | name, err); |
2308 | } | |
252b5132 | 2309 | |
4670103e | 2310 | /* Construct symbols for each of the general registers. */ |
252b5132 | 2311 | |
4670103e CZ |
2312 | static void |
2313 | declare_register_set (void) | |
2314 | { | |
2315 | int i; | |
2316 | for (i = 0; i < 64; ++i) | |
886a2506 | 2317 | { |
4670103e CZ |
2318 | char name[7]; |
2319 | ||
2320 | sprintf (name, "r%d", i); | |
2321 | declare_register (name, i); | |
2322 | if ((i & 0x01) == 0) | |
886a2506 | 2323 | { |
4670103e CZ |
2324 | sprintf (name, "r%dr%d", i, i+1); |
2325 | declare_register (name, i); | |
886a2506 NC |
2326 | } |
2327 | } | |
252b5132 | 2328 | } |
ea1562b3 | 2329 | |
4670103e CZ |
2330 | /* Port-specific assembler initialization. This function is called |
2331 | once, at assembler startup time. */ | |
ea1562b3 NC |
2332 | |
2333 | void | |
4670103e | 2334 | md_begin (void) |
ea1562b3 | 2335 | { |
b99747ae | 2336 | const struct arc_opcode *opcode = arc_opcodes; |
886a2506 | 2337 | |
24740d83 AB |
2338 | if (!mach_type_specified_p) |
2339 | arc_select_cpu ("arc700"); | |
2340 | ||
4670103e CZ |
2341 | /* The endianness can be chosen "at the factory". */ |
2342 | target_big_endian = byte_order == BIG_ENDIAN; | |
886a2506 | 2343 | |
4670103e CZ |
2344 | if (!bfd_set_arch_mach (stdoutput, bfd_arch_arc, arc_mach_type)) |
2345 | as_warn (_("could not set architecture and machine")); | |
2346 | ||
2347 | /* Set elf header flags. */ | |
2348 | bfd_set_private_flags (stdoutput, arc_eflag); | |
2349 | ||
2350 | /* Set up a hash table for the instructions. */ | |
2351 | arc_opcode_hash = hash_new (); | |
2352 | if (arc_opcode_hash == NULL) | |
2353 | as_fatal (_("Virtual memory exhausted")); | |
2354 | ||
2355 | /* Initialize the hash table with the insns. */ | |
b99747ae | 2356 | do |
ea1562b3 | 2357 | { |
b99747ae | 2358 | const char *name = opcode->name; |
da5be039 | 2359 | |
b99747ae | 2360 | arc_insert_opcode (opcode); |
4670103e | 2361 | |
b99747ae CZ |
2362 | while (++opcode && opcode->name |
2363 | && (opcode->name == name | |
2364 | || !strcmp (opcode->name, name))) | |
4670103e | 2365 | continue; |
b99747ae | 2366 | }while (opcode->name); |
4670103e CZ |
2367 | |
2368 | /* Register declaration. */ | |
2369 | arc_reg_hash = hash_new (); | |
2370 | if (arc_reg_hash == NULL) | |
2371 | as_fatal (_("Virtual memory exhausted")); | |
2372 | ||
2373 | declare_register_set (); | |
2374 | declare_register ("gp", 26); | |
2375 | declare_register ("fp", 27); | |
2376 | declare_register ("sp", 28); | |
2377 | declare_register ("ilink", 29); | |
2378 | declare_register ("ilink1", 29); | |
2379 | declare_register ("ilink2", 30); | |
2380 | declare_register ("blink", 31); | |
2381 | ||
2382 | declare_register ("mlo", 57); | |
2383 | declare_register ("mmid", 58); | |
2384 | declare_register ("mhi", 59); | |
2385 | ||
2386 | declare_register ("acc1", 56); | |
2387 | declare_register ("acc2", 57); | |
2388 | ||
2389 | declare_register ("lp_count", 60); | |
2390 | declare_register ("pcl", 63); | |
2391 | ||
2392 | /* Initialize the last instructions. */ | |
2393 | memset (&arc_last_insns[0], 0, sizeof (arc_last_insns)); | |
f36e33da CZ |
2394 | |
2395 | /* Aux register declaration. */ | |
2396 | arc_aux_hash = hash_new (); | |
2397 | if (arc_aux_hash == NULL) | |
2398 | as_fatal (_("Virtual memory exhausted")); | |
2399 | ||
2400 | const struct arc_aux_reg *auxr = &arc_aux_regs[0]; | |
2401 | unsigned int i; | |
2402 | for (i = 0; i < arc_num_aux_regs; i++, auxr++) | |
2403 | { | |
2404 | const char *retval; | |
2405 | ||
2406 | if (!(auxr->cpu & arc_target)) | |
2407 | continue; | |
2408 | ||
2409 | if ((auxr->subclass != NONE) | |
2410 | && !check_cpu_feature (auxr->subclass)) | |
2411 | continue; | |
2412 | ||
2413 | retval = hash_insert (arc_aux_hash, auxr->name, (void *) auxr); | |
2414 | if (retval) | |
2415 | as_fatal (_("internal error: can't hash aux register '%s': %s"), | |
2416 | auxr->name, retval); | |
2417 | } | |
886a2506 | 2418 | } |
ea1562b3 | 2419 | |
4670103e CZ |
2420 | /* Write a value out to the object file, using the appropriate |
2421 | endianness. */ | |
ea1562b3 | 2422 | |
4670103e CZ |
2423 | void |
2424 | md_number_to_chars (char *buf, | |
2425 | valueT val, | |
2426 | int n) | |
886a2506 | 2427 | { |
4670103e CZ |
2428 | if (target_big_endian) |
2429 | number_to_chars_bigendian (buf, val, n); | |
2430 | else | |
2431 | number_to_chars_littleendian (buf, val, n); | |
886a2506 | 2432 | } |
ea1562b3 | 2433 | |
4670103e | 2434 | /* Round up a section size to the appropriate boundary. */ |
ea1562b3 | 2435 | |
4670103e CZ |
2436 | valueT |
2437 | md_section_align (segT segment, | |
2438 | valueT size) | |
886a2506 | 2439 | { |
4670103e CZ |
2440 | int align = bfd_get_section_alignment (stdoutput, segment); |
2441 | ||
2442 | return ((size + (1 << align) - 1) & (-((valueT) 1 << align))); | |
886a2506 | 2443 | } |
ea1562b3 | 2444 | |
4670103e CZ |
2445 | /* The location from which a PC relative jump should be calculated, |
2446 | given a PC relative reloc. */ | |
ea1562b3 | 2447 | |
4670103e CZ |
2448 | long |
2449 | md_pcrel_from_section (fixS *fixP, | |
2450 | segT sec) | |
886a2506 | 2451 | { |
4670103e | 2452 | offsetT base = fixP->fx_where + fixP->fx_frag->fr_address; |
ea1562b3 | 2453 | |
4670103e | 2454 | pr_debug ("pcrel_from_section, fx_offset = %d\n", (int) fixP->fx_offset); |
ea1562b3 | 2455 | |
4670103e CZ |
2456 | if (fixP->fx_addsy != (symbolS *) NULL |
2457 | && (!S_IS_DEFINED (fixP->fx_addsy) | |
2458 | || S_GET_SEGMENT (fixP->fx_addsy) != sec)) | |
2459 | { | |
2460 | pr_debug ("Unknown pcrel symbol: %s\n", S_GET_NAME (fixP->fx_addsy)); | |
ea1562b3 | 2461 | |
4670103e CZ |
2462 | /* The symbol is undefined (or is defined but not in this section). |
2463 | Let the linker figure it out. */ | |
2464 | return 0; | |
2465 | } | |
2466 | ||
2467 | if ((int) fixP->fx_r_type < 0) | |
886a2506 | 2468 | { |
4670103e CZ |
2469 | /* These are the "internal" relocations. Align them to |
2470 | 32 bit boundary (PCL), for the moment. */ | |
2471 | base &= ~3; | |
886a2506 | 2472 | } |
4670103e CZ |
2473 | else |
2474 | { | |
2475 | switch (fixP->fx_r_type) | |
2476 | { | |
2477 | case BFD_RELOC_ARC_PC32: | |
2478 | /* The hardware calculates relative to the start of the | |
2479 | insn, but this relocation is relative to location of the | |
2480 | LIMM, compensate. The base always needs to be | |
2481 | substracted by 4 as we do not support this type of PCrel | |
2482 | relocation for short instructions. */ | |
2483 | base -= 4; | |
2484 | /* Fall through. */ | |
2485 | case BFD_RELOC_ARC_PLT32: | |
2486 | case BFD_RELOC_ARC_S25H_PCREL_PLT: | |
2487 | case BFD_RELOC_ARC_S21H_PCREL_PLT: | |
2488 | case BFD_RELOC_ARC_S25W_PCREL_PLT: | |
2489 | case BFD_RELOC_ARC_S21W_PCREL_PLT: | |
2490 | ||
2491 | case BFD_RELOC_ARC_S21H_PCREL: | |
2492 | case BFD_RELOC_ARC_S25H_PCREL: | |
2493 | case BFD_RELOC_ARC_S13_PCREL: | |
2494 | case BFD_RELOC_ARC_S21W_PCREL: | |
2495 | case BFD_RELOC_ARC_S25W_PCREL: | |
2496 | base &= ~3; | |
2497 | break; | |
2498 | default: | |
2499 | as_bad_where (fixP->fx_file, fixP->fx_line, | |
2500 | _("unhandled reloc %s in md_pcrel_from_section"), | |
2501 | bfd_get_reloc_code_name (fixP->fx_r_type)); | |
2502 | break; | |
2503 | } | |
2504 | } | |
2505 | ||
2506 | pr_debug ("pcrel from %x + %lx = %x, symbol: %s (%x)\n", | |
2507 | fixP->fx_frag->fr_address, fixP->fx_where, base, | |
2508 | fixP->fx_addsy ? S_GET_NAME (fixP->fx_addsy) : "(null)", | |
2509 | fixP->fx_addsy ? S_GET_VALUE (fixP->fx_addsy) : 0); | |
2510 | ||
2511 | return base; | |
886a2506 | 2512 | } |
ea1562b3 | 2513 | |
4670103e | 2514 | /* Given a BFD relocation find the coresponding operand. */ |
ea1562b3 | 2515 | |
4670103e CZ |
2516 | static const struct arc_operand * |
2517 | find_operand_for_reloc (extended_bfd_reloc_code_real_type reloc) | |
2518 | { | |
2519 | unsigned i; | |
ea1562b3 | 2520 | |
4670103e CZ |
2521 | for (i = 0; i < arc_num_operands; i++) |
2522 | if (arc_operands[i].default_reloc == reloc) | |
2523 | return &arc_operands[i]; | |
2524 | return NULL; | |
2525 | } | |
ea1562b3 | 2526 | |
4670103e | 2527 | /* Insert an operand value into an instruction. */ |
ea1562b3 | 2528 | |
4670103e CZ |
2529 | static unsigned |
2530 | insert_operand (unsigned insn, | |
2531 | const struct arc_operand *operand, | |
2532 | offsetT val, | |
3b4dbbbf | 2533 | const char *file, |
4670103e | 2534 | unsigned line) |
886a2506 | 2535 | { |
4670103e | 2536 | offsetT min = 0, max = 0; |
ea1562b3 | 2537 | |
4670103e CZ |
2538 | if (operand->bits != 32 |
2539 | && !(operand->flags & ARC_OPERAND_NCHK) | |
2540 | && !(operand->flags & ARC_OPERAND_FAKE)) | |
886a2506 | 2541 | { |
4670103e CZ |
2542 | if (operand->flags & ARC_OPERAND_SIGNED) |
2543 | { | |
2544 | max = (1 << (operand->bits - 1)) - 1; | |
2545 | min = -(1 << (operand->bits - 1)); | |
2546 | } | |
2547 | else | |
2548 | { | |
2549 | max = (1 << operand->bits) - 1; | |
2550 | min = 0; | |
2551 | } | |
886a2506 | 2552 | |
4670103e CZ |
2553 | if (val < min || val > max) |
2554 | as_bad_value_out_of_range (_("operand"), | |
2555 | val, min, max, file, line); | |
2556 | } | |
ea1562b3 | 2557 | |
4670103e CZ |
2558 | pr_debug ("insert field: %ld <= %ld <= %ld in 0x%08x\n", |
2559 | min, val, max, insn); | |
ea1562b3 | 2560 | |
4670103e CZ |
2561 | if ((operand->flags & ARC_OPERAND_ALIGNED32) |
2562 | && (val & 0x03)) | |
2563 | as_bad_where (file, line, | |
2564 | _("Unaligned operand. Needs to be 32bit aligned")); | |
ea1562b3 | 2565 | |
4670103e CZ |
2566 | if ((operand->flags & ARC_OPERAND_ALIGNED16) |
2567 | && (val & 0x01)) | |
2568 | as_bad_where (file, line, | |
2569 | _("Unaligned operand. Needs to be 16bit aligned")); | |
ea1562b3 | 2570 | |
4670103e CZ |
2571 | if (operand->insert) |
2572 | { | |
2573 | const char *errmsg = NULL; | |
ea1562b3 | 2574 | |
4670103e CZ |
2575 | insn = (*operand->insert) (insn, val, &errmsg); |
2576 | if (errmsg) | |
2577 | as_warn_where (file, line, "%s", errmsg); | |
2578 | } | |
2579 | else | |
2580 | { | |
2581 | if (operand->flags & ARC_OPERAND_TRUNCATE) | |
2582 | { | |
2583 | if (operand->flags & ARC_OPERAND_ALIGNED32) | |
2584 | val >>= 2; | |
2585 | if (operand->flags & ARC_OPERAND_ALIGNED16) | |
2586 | val >>= 1; | |
886a2506 | 2587 | } |
4670103e CZ |
2588 | insn |= ((val & ((1 << operand->bits) - 1)) << operand->shift); |
2589 | } | |
2590 | return insn; | |
2591 | } | |
ea1562b3 | 2592 | |
4670103e CZ |
2593 | /* Apply a fixup to the object code. At this point all symbol values |
2594 | should be fully resolved, and we attempt to completely resolve the | |
2595 | reloc. If we can not do that, we determine the correct reloc code | |
2596 | and put it back in the fixup. To indicate that a fixup has been | |
2597 | eliminated, set fixP->fx_done. */ | |
ea1562b3 | 2598 | |
4670103e CZ |
2599 | void |
2600 | md_apply_fix (fixS *fixP, | |
2601 | valueT *valP, | |
2602 | segT seg) | |
2603 | { | |
2604 | char * const fixpos = fixP->fx_frag->fr_literal + fixP->fx_where; | |
2605 | valueT value = *valP; | |
2606 | unsigned insn = 0; | |
2607 | symbolS *fx_addsy, *fx_subsy; | |
2608 | offsetT fx_offset; | |
2609 | segT add_symbol_segment = absolute_section; | |
2610 | segT sub_symbol_segment = absolute_section; | |
2611 | const struct arc_operand *operand = NULL; | |
2612 | extended_bfd_reloc_code_real_type reloc; | |
886a2506 | 2613 | |
4670103e CZ |
2614 | pr_debug ("%s:%u: apply_fix: r_type=%d (%s) value=0x%lX offset=0x%lX\n", |
2615 | fixP->fx_file, fixP->fx_line, fixP->fx_r_type, | |
2616 | ((int) fixP->fx_r_type < 0) ? "Internal": | |
2617 | bfd_get_reloc_code_name (fixP->fx_r_type), value, | |
2618 | fixP->fx_offset); | |
886a2506 | 2619 | |
4670103e CZ |
2620 | fx_addsy = fixP->fx_addsy; |
2621 | fx_subsy = fixP->fx_subsy; | |
2622 | fx_offset = 0; | |
886a2506 | 2623 | |
4670103e CZ |
2624 | if (fx_addsy) |
2625 | { | |
2626 | add_symbol_segment = S_GET_SEGMENT (fx_addsy); | |
886a2506 NC |
2627 | } |
2628 | ||
4670103e CZ |
2629 | if (fx_subsy |
2630 | && fixP->fx_r_type != BFD_RELOC_ARC_TLS_DTPOFF | |
2631 | && fixP->fx_r_type != BFD_RELOC_ARC_TLS_DTPOFF_S9 | |
2632 | && fixP->fx_r_type != BFD_RELOC_ARC_TLS_GD_LD) | |
2633 | { | |
2634 | resolve_symbol_value (fx_subsy); | |
2635 | sub_symbol_segment = S_GET_SEGMENT (fx_subsy); | |
886a2506 | 2636 | |
4670103e CZ |
2637 | if (sub_symbol_segment == absolute_section) |
2638 | { | |
2639 | /* The symbol is really a constant. */ | |
2640 | fx_offset -= S_GET_VALUE (fx_subsy); | |
2641 | fx_subsy = NULL; | |
2642 | } | |
2643 | else | |
2644 | { | |
2645 | as_bad_where (fixP->fx_file, fixP->fx_line, | |
2646 | _("can't resolve `%s' {%s section} - `%s' {%s section}"), | |
2647 | fx_addsy ? S_GET_NAME (fx_addsy) : "0", | |
2648 | segment_name (add_symbol_segment), | |
2649 | S_GET_NAME (fx_subsy), | |
2650 | segment_name (sub_symbol_segment)); | |
2651 | return; | |
2652 | } | |
2653 | } | |
886a2506 | 2654 | |
4670103e CZ |
2655 | if (fx_addsy |
2656 | && !S_IS_WEAK (fx_addsy)) | |
2657 | { | |
2658 | if (add_symbol_segment == seg | |
2659 | && fixP->fx_pcrel) | |
2660 | { | |
2661 | value += S_GET_VALUE (fx_addsy); | |
2662 | value -= md_pcrel_from_section (fixP, seg); | |
2663 | fx_addsy = NULL; | |
2664 | fixP->fx_pcrel = FALSE; | |
2665 | } | |
2666 | else if (add_symbol_segment == absolute_section) | |
2667 | { | |
2668 | value = fixP->fx_offset; | |
2669 | fx_offset += S_GET_VALUE (fixP->fx_addsy); | |
2670 | fx_addsy = NULL; | |
2671 | fixP->fx_pcrel = FALSE; | |
2672 | } | |
2673 | } | |
886a2506 | 2674 | |
4670103e CZ |
2675 | if (!fx_addsy) |
2676 | fixP->fx_done = TRUE; | |
886a2506 | 2677 | |
4670103e | 2678 | if (fixP->fx_pcrel) |
886a2506 | 2679 | { |
4670103e CZ |
2680 | if (fx_addsy |
2681 | && ((S_IS_DEFINED (fx_addsy) | |
2682 | && S_GET_SEGMENT (fx_addsy) != seg) | |
2683 | || S_IS_WEAK (fx_addsy))) | |
2684 | value += md_pcrel_from_section (fixP, seg); | |
886a2506 | 2685 | |
4670103e CZ |
2686 | switch (fixP->fx_r_type) |
2687 | { | |
2688 | case BFD_RELOC_ARC_32_ME: | |
2689 | /* This is a pc-relative value in a LIMM. Adjust it to the | |
2690 | address of the instruction not to the address of the | |
2691 | LIMM. Note: it is not anylonger valid this afirmation as | |
2692 | the linker consider ARC_PC32 a fixup to entire 64 bit | |
2693 | insn. */ | |
2694 | fixP->fx_offset += fixP->fx_frag->fr_address; | |
2695 | /* Fall through. */ | |
2696 | case BFD_RELOC_32: | |
2697 | fixP->fx_r_type = BFD_RELOC_ARC_PC32; | |
2698 | /* Fall through. */ | |
2699 | case BFD_RELOC_ARC_PC32: | |
2700 | /* fixP->fx_offset += fixP->fx_where - fixP->fx_dot_value; */ | |
886a2506 NC |
2701 | break; |
2702 | default: | |
4670103e CZ |
2703 | if ((int) fixP->fx_r_type < 0) |
2704 | as_fatal (_("PC relative relocation not allowed for (internal) type %d"), | |
2705 | fixP->fx_r_type); | |
886a2506 | 2706 | break; |
ea1562b3 NC |
2707 | } |
2708 | } | |
2709 | ||
4670103e CZ |
2710 | pr_debug ("%s:%u: apply_fix: r_type=%d (%s) value=0x%lX offset=0x%lX\n", |
2711 | fixP->fx_file, fixP->fx_line, fixP->fx_r_type, | |
2712 | ((int) fixP->fx_r_type < 0) ? "Internal": | |
2713 | bfd_get_reloc_code_name (fixP->fx_r_type), value, | |
2714 | fixP->fx_offset); | |
886a2506 | 2715 | |
886a2506 | 2716 | |
4670103e CZ |
2717 | /* Now check for TLS relocations. */ |
2718 | reloc = fixP->fx_r_type; | |
2719 | switch (reloc) | |
886a2506 | 2720 | { |
4670103e CZ |
2721 | case BFD_RELOC_ARC_TLS_DTPOFF: |
2722 | case BFD_RELOC_ARC_TLS_LE_32: | |
2723 | if (fixP->fx_done) | |
2724 | break; | |
2725 | /* Fall through. */ | |
2726 | case BFD_RELOC_ARC_TLS_GD_GOT: | |
2727 | case BFD_RELOC_ARC_TLS_IE_GOT: | |
2728 | S_SET_THREAD_LOCAL (fixP->fx_addsy); | |
2729 | break; | |
886a2506 | 2730 | |
4670103e CZ |
2731 | case BFD_RELOC_ARC_TLS_GD_LD: |
2732 | gas_assert (!fixP->fx_offset); | |
2733 | if (fixP->fx_subsy) | |
2734 | fixP->fx_offset | |
2735 | = (S_GET_VALUE (fixP->fx_subsy) | |
2736 | - fixP->fx_frag->fr_address- fixP->fx_where); | |
2737 | fixP->fx_subsy = NULL; | |
2738 | /* Fall through. */ | |
2739 | case BFD_RELOC_ARC_TLS_GD_CALL: | |
2740 | /* These two relocs are there just to allow ld to change the tls | |
2741 | model for this symbol, by patching the code. The offset - | |
2742 | and scale, if any - will be installed by the linker. */ | |
2743 | S_SET_THREAD_LOCAL (fixP->fx_addsy); | |
2744 | break; | |
886a2506 | 2745 | |
4670103e CZ |
2746 | case BFD_RELOC_ARC_TLS_LE_S9: |
2747 | case BFD_RELOC_ARC_TLS_DTPOFF_S9: | |
2748 | as_bad (_("TLS_*_S9 relocs are not supported yet")); | |
2749 | break; | |
2750 | ||
2751 | default: | |
2752 | break; | |
886a2506 NC |
2753 | } |
2754 | ||
4670103e | 2755 | if (!fixP->fx_done) |
886a2506 | 2756 | { |
4670103e | 2757 | return; |
886a2506 | 2758 | } |
886a2506 | 2759 | |
4670103e CZ |
2760 | /* Addjust the value if we have a constant. */ |
2761 | value += fx_offset; | |
886a2506 | 2762 | |
4670103e CZ |
2763 | /* For hosts with longs bigger than 32-bits make sure that the top |
2764 | bits of a 32-bit negative value read in by the parser are set, | |
2765 | so that the correct comparisons are made. */ | |
2766 | if (value & 0x80000000) | |
2767 | value |= (-1L << 31); | |
886a2506 | 2768 | |
4670103e CZ |
2769 | reloc = fixP->fx_r_type; |
2770 | switch (reloc) | |
2771 | { | |
2772 | case BFD_RELOC_8: | |
2773 | case BFD_RELOC_16: | |
2774 | case BFD_RELOC_24: | |
2775 | case BFD_RELOC_32: | |
2776 | case BFD_RELOC_64: | |
2777 | case BFD_RELOC_ARC_32_PCREL: | |
2778 | md_number_to_chars (fixpos, value, fixP->fx_size); | |
2779 | return; | |
886a2506 | 2780 | |
4670103e CZ |
2781 | case BFD_RELOC_ARC_GOTPC32: |
2782 | /* I cannot fix an GOTPC relocation because I need to relax it | |
2783 | from ld rx,[pcl,@sym@gotpc] to add rx,pcl,@sym@gotpc. */ | |
2784 | as_bad (_("Unsupported operation on reloc")); | |
2785 | return; | |
886a2506 | 2786 | |
4670103e CZ |
2787 | case BFD_RELOC_ARC_TLS_DTPOFF: |
2788 | case BFD_RELOC_ARC_TLS_LE_32: | |
2789 | gas_assert (!fixP->fx_addsy); | |
2790 | gas_assert (!fixP->fx_subsy); | |
886a2506 | 2791 | |
4670103e CZ |
2792 | case BFD_RELOC_ARC_GOTOFF: |
2793 | case BFD_RELOC_ARC_32_ME: | |
2794 | case BFD_RELOC_ARC_PC32: | |
2795 | md_number_to_chars_midend (fixpos, value, fixP->fx_size); | |
2796 | return; | |
886a2506 | 2797 | |
4670103e CZ |
2798 | case BFD_RELOC_ARC_PLT32: |
2799 | md_number_to_chars_midend (fixpos, value, fixP->fx_size); | |
2800 | return; | |
886a2506 | 2801 | |
4670103e CZ |
2802 | case BFD_RELOC_ARC_S25H_PCREL_PLT: |
2803 | reloc = BFD_RELOC_ARC_S25W_PCREL; | |
2804 | goto solve_plt; | |
886a2506 | 2805 | |
4670103e CZ |
2806 | case BFD_RELOC_ARC_S21H_PCREL_PLT: |
2807 | reloc = BFD_RELOC_ARC_S21H_PCREL; | |
2808 | goto solve_plt; | |
886a2506 | 2809 | |
4670103e CZ |
2810 | case BFD_RELOC_ARC_S25W_PCREL_PLT: |
2811 | reloc = BFD_RELOC_ARC_S25W_PCREL; | |
2812 | goto solve_plt; | |
886a2506 | 2813 | |
4670103e CZ |
2814 | case BFD_RELOC_ARC_S21W_PCREL_PLT: |
2815 | reloc = BFD_RELOC_ARC_S21W_PCREL; | |
886a2506 | 2816 | |
4670103e CZ |
2817 | case BFD_RELOC_ARC_S25W_PCREL: |
2818 | case BFD_RELOC_ARC_S21W_PCREL: | |
2819 | case BFD_RELOC_ARC_S21H_PCREL: | |
2820 | case BFD_RELOC_ARC_S25H_PCREL: | |
2821 | case BFD_RELOC_ARC_S13_PCREL: | |
2822 | solve_plt: | |
2823 | operand = find_operand_for_reloc (reloc); | |
2824 | gas_assert (operand); | |
886a2506 NC |
2825 | break; |
2826 | ||
2827 | default: | |
4670103e CZ |
2828 | { |
2829 | if ((int) fixP->fx_r_type >= 0) | |
2830 | as_fatal (_("unhandled relocation type %s"), | |
2831 | bfd_get_reloc_code_name (fixP->fx_r_type)); | |
886a2506 | 2832 | |
4670103e CZ |
2833 | /* The rest of these fixups needs to be completely resolved as |
2834 | constants. */ | |
2835 | if (fixP->fx_addsy != 0 | |
2836 | && S_GET_SEGMENT (fixP->fx_addsy) != absolute_section) | |
2837 | as_bad_where (fixP->fx_file, fixP->fx_line, | |
2838 | _("non-absolute expression in constant field")); | |
886a2506 | 2839 | |
4670103e CZ |
2840 | gas_assert (-(int) fixP->fx_r_type < (int) arc_num_operands); |
2841 | operand = &arc_operands[-(int) fixP->fx_r_type]; | |
2842 | break; | |
2843 | } | |
2844 | } | |
886a2506 | 2845 | |
4670103e | 2846 | if (target_big_endian) |
886a2506 | 2847 | { |
4670103e | 2848 | switch (fixP->fx_size) |
886a2506 | 2849 | { |
4670103e CZ |
2850 | case 4: |
2851 | insn = bfd_getb32 (fixpos); | |
2852 | break; | |
2853 | case 2: | |
2854 | insn = bfd_getb16 (fixpos); | |
2855 | break; | |
2856 | default: | |
2857 | as_bad_where (fixP->fx_file, fixP->fx_line, | |
2858 | _("unknown fixup size")); | |
2859 | } | |
2860 | } | |
2861 | else | |
2862 | { | |
2863 | insn = 0; | |
2864 | switch (fixP->fx_size) | |
2865 | { | |
2866 | case 4: | |
2867 | insn = bfd_getl16 (fixpos) << 16 | bfd_getl16 (fixpos + 2); | |
2868 | break; | |
2869 | case 2: | |
2870 | insn = bfd_getl16 (fixpos); | |
2871 | break; | |
2872 | default: | |
2873 | as_bad_where (fixP->fx_file, fixP->fx_line, | |
2874 | _("unknown fixup size")); | |
886a2506 NC |
2875 | } |
2876 | } | |
886a2506 | 2877 | |
4670103e CZ |
2878 | insn = insert_operand (insn, operand, (offsetT) value, |
2879 | fixP->fx_file, fixP->fx_line); | |
886a2506 | 2880 | |
4670103e CZ |
2881 | md_number_to_chars_midend (fixpos, insn, fixP->fx_size); |
2882 | } | |
886a2506 | 2883 | |
4670103e | 2884 | /* Prepare machine-dependent frags for relaxation. |
886a2506 | 2885 | |
4670103e CZ |
2886 | Called just before relaxation starts. Any symbol that is now undefined |
2887 | will not become defined. | |
886a2506 | 2888 | |
4670103e | 2889 | Return the correct fr_subtype in the frag. |
886a2506 | 2890 | |
4670103e CZ |
2891 | Return the initial "guess for fr_var" to caller. The guess for fr_var |
2892 | is *actually* the growth beyond fr_fix. Whatever we do to grow fr_fix | |
2893 | or fr_var contributes to our returned value. | |
886a2506 | 2894 | |
4670103e CZ |
2895 | Although it may not be explicit in the frag, pretend |
2896 | fr_var starts with a value. */ | |
886a2506 | 2897 | |
4670103e CZ |
2898 | int |
2899 | md_estimate_size_before_relax (fragS *fragP, | |
2900 | segT segment) | |
2901 | { | |
2902 | int growth; | |
2903 | ||
2904 | /* If the symbol is not located within the same section AND it's not | |
2905 | an absolute section, use the maximum. OR if the symbol is a | |
2906 | constant AND the insn is by nature not pc-rel, use the maximum. | |
2907 | OR if the symbol is being equated against another symbol, use the | |
2908 | maximum. OR if the symbol is weak use the maximum. */ | |
2909 | if ((S_GET_SEGMENT (fragP->fr_symbol) != segment | |
2910 | && S_GET_SEGMENT (fragP->fr_symbol) != absolute_section) | |
2911 | || (symbol_constant_p (fragP->fr_symbol) | |
2912 | && !fragP->tc_frag_data.pcrel) | |
2913 | || symbol_equated_p (fragP->fr_symbol) | |
2914 | || S_IS_WEAK (fragP->fr_symbol)) | |
2915 | { | |
2916 | while (md_relax_table[fragP->fr_subtype].rlx_more != ARC_RLX_NONE) | |
2917 | ++fragP->fr_subtype; | |
2918 | } | |
886a2506 | 2919 | |
4670103e CZ |
2920 | growth = md_relax_table[fragP->fr_subtype].rlx_length; |
2921 | fragP->fr_var = growth; | |
886a2506 | 2922 | |
4670103e CZ |
2923 | pr_debug ("%s:%d: md_estimate_size_before_relax: %d\n", |
2924 | fragP->fr_file, fragP->fr_line, growth); | |
886a2506 | 2925 | |
4670103e CZ |
2926 | return growth; |
2927 | } | |
886a2506 | 2928 | |
4670103e CZ |
2929 | /* Translate internal representation of relocation info to BFD target |
2930 | format. */ | |
886a2506 | 2931 | |
4670103e CZ |
2932 | arelent * |
2933 | tc_gen_reloc (asection *section ATTRIBUTE_UNUSED, | |
2934 | fixS *fixP) | |
2935 | { | |
2936 | arelent *reloc; | |
2937 | bfd_reloc_code_real_type code; | |
886a2506 | 2938 | |
add39d23 TS |
2939 | reloc = XNEW (arelent); |
2940 | reloc->sym_ptr_ptr = XNEW (asymbol *); | |
4670103e CZ |
2941 | *reloc->sym_ptr_ptr = symbol_get_bfdsym (fixP->fx_addsy); |
2942 | reloc->address = fixP->fx_frag->fr_address + fixP->fx_where; | |
886a2506 | 2943 | |
4670103e CZ |
2944 | /* Make sure none of our internal relocations make it this far. |
2945 | They'd better have been fully resolved by this point. */ | |
2946 | gas_assert ((int) fixP->fx_r_type > 0); | |
886a2506 | 2947 | |
4670103e | 2948 | code = fixP->fx_r_type; |
886a2506 | 2949 | |
4670103e CZ |
2950 | /* if we have something like add gp, pcl, |
2951 | _GLOBAL_OFFSET_TABLE_@gotpc. */ | |
2952 | if (code == BFD_RELOC_ARC_GOTPC32 | |
2953 | && GOT_symbol | |
2954 | && fixP->fx_addsy == GOT_symbol) | |
2955 | code = BFD_RELOC_ARC_GOTPC; | |
886a2506 | 2956 | |
4670103e CZ |
2957 | reloc->howto = bfd_reloc_type_lookup (stdoutput, code); |
2958 | if (reloc->howto == NULL) | |
886a2506 | 2959 | { |
4670103e CZ |
2960 | as_bad_where (fixP->fx_file, fixP->fx_line, |
2961 | _("cannot represent `%s' relocation in object file"), | |
2962 | bfd_get_reloc_code_name (code)); | |
2963 | return NULL; | |
2964 | } | |
886a2506 | 2965 | |
4670103e CZ |
2966 | if (!fixP->fx_pcrel != !reloc->howto->pc_relative) |
2967 | as_fatal (_("internal error? cannot generate `%s' relocation"), | |
2968 | bfd_get_reloc_code_name (code)); | |
886a2506 | 2969 | |
4670103e | 2970 | gas_assert (!fixP->fx_pcrel == !reloc->howto->pc_relative); |
886a2506 | 2971 | |
4670103e CZ |
2972 | if (code == BFD_RELOC_ARC_TLS_DTPOFF |
2973 | || code == BFD_RELOC_ARC_TLS_DTPOFF_S9) | |
2974 | { | |
2975 | asymbol *sym | |
2976 | = fixP->fx_subsy ? symbol_get_bfdsym (fixP->fx_subsy) : NULL; | |
2977 | /* We just want to store a 24 bit index, but we have to wait | |
2978 | till after write_contents has been called via | |
2979 | bfd_map_over_sections before we can get the index from | |
2980 | _bfd_elf_symbol_from_bfd_symbol. Thus, the write_relocs | |
2981 | function is elf32-arc.c has to pick up the slack. | |
2982 | Unfortunately, this leads to problems with hosts that have | |
2983 | pointers wider than long (bfd_vma). There would be various | |
2984 | ways to handle this, all error-prone :-( */ | |
2985 | reloc->addend = (bfd_vma) sym; | |
2986 | if ((asymbol *) reloc->addend != sym) | |
2987 | { | |
2988 | as_bad ("Can't store pointer\n"); | |
2989 | return NULL; | |
886a2506 NC |
2990 | } |
2991 | } | |
4670103e CZ |
2992 | else |
2993 | reloc->addend = fixP->fx_offset; | |
2994 | ||
2995 | return reloc; | |
886a2506 NC |
2996 | } |
2997 | ||
4670103e CZ |
2998 | /* Perform post-processing of machine-dependent frags after relaxation. |
2999 | Called after relaxation is finished. | |
3000 | In: Address of frag. | |
3001 | fr_type == rs_machine_dependent. | |
3002 | fr_subtype is what the address relaxed to. | |
886a2506 | 3003 | |
4670103e CZ |
3004 | Out: Any fixS:s and constants are set up. */ |
3005 | ||
3006 | void | |
3007 | md_convert_frag (bfd *abfd ATTRIBUTE_UNUSED, | |
3008 | segT segment ATTRIBUTE_UNUSED, | |
3009 | fragS *fragP) | |
886a2506 | 3010 | { |
4670103e CZ |
3011 | const relax_typeS *table_entry; |
3012 | char *dest; | |
3013 | const struct arc_opcode *opcode; | |
3014 | struct arc_insn insn; | |
3015 | int size, fix; | |
3016 | struct arc_relax_type *relax_arg = &fragP->tc_frag_data; | |
886a2506 | 3017 | |
4670103e CZ |
3018 | fix = (fragP->fr_fix < 0 ? 0 : fragP->fr_fix); |
3019 | dest = fragP->fr_literal + fix; | |
3020 | table_entry = TC_GENERIC_RELAX_TABLE + fragP->fr_subtype; | |
886a2506 | 3021 | |
4670103e CZ |
3022 | pr_debug ("%s:%d: md_convert_frag, subtype: %d, fix: %d, var: %d\n", |
3023 | fragP->fr_file, fragP->fr_line, | |
3024 | fragP->fr_subtype, fix, fragP->fr_var); | |
886a2506 | 3025 | |
4670103e CZ |
3026 | if (fragP->fr_subtype <= 0 |
3027 | && fragP->fr_subtype >= arc_num_relax_opcodes) | |
3028 | as_fatal (_("no relaxation found for this instruction.")); | |
886a2506 | 3029 | |
4670103e | 3030 | opcode = &arc_relax_opcodes[fragP->fr_subtype]; |
886a2506 | 3031 | |
4670103e CZ |
3032 | assemble_insn (opcode, relax_arg->tok, relax_arg->ntok, relax_arg->pflags, |
3033 | relax_arg->nflg, &insn); | |
886a2506 | 3034 | |
4670103e | 3035 | apply_fixups (&insn, fragP, fix); |
886a2506 | 3036 | |
4670103e CZ |
3037 | size = insn.short_insn ? (insn.has_limm ? 6 : 2) : (insn.has_limm ? 8 : 4); |
3038 | gas_assert (table_entry->rlx_length == size); | |
3039 | emit_insn0 (&insn, dest, TRUE); | |
886a2506 | 3040 | |
4670103e CZ |
3041 | fragP->fr_fix += table_entry->rlx_length; |
3042 | fragP->fr_var = 0; | |
886a2506 NC |
3043 | } |
3044 | ||
4670103e CZ |
3045 | /* We have no need to default values of symbols. We could catch |
3046 | register names here, but that is handled by inserting them all in | |
3047 | the symbol table to begin with. */ | |
886a2506 | 3048 | |
4670103e CZ |
3049 | symbolS * |
3050 | md_undefined_symbol (char *name) | |
886a2506 | 3051 | { |
4670103e CZ |
3052 | /* The arc abi demands that a GOT[0] should be referencible as |
3053 | [pc+_DYNAMIC@gotpc]. Hence we convert a _DYNAMIC@gotpc to a | |
3054 | GOTPC reference to _GLOBAL_OFFSET_TABLE_. */ | |
3055 | if (((*name == '_') | |
3056 | && (*(name+1) == 'G') | |
3057 | && (strcmp (name, GLOBAL_OFFSET_TABLE_NAME) == 0)) | |
3058 | || ((*name == '_') | |
3059 | && (*(name+1) == 'D') | |
3060 | && (strcmp (name, DYNAMIC_STRUCT_NAME) == 0))) | |
886a2506 | 3061 | { |
4670103e CZ |
3062 | if (!GOT_symbol) |
3063 | { | |
3064 | if (symbol_find (name)) | |
3065 | as_bad ("GOT already in symbol table"); | |
3066 | ||
3067 | GOT_symbol = symbol_new (GLOBAL_OFFSET_TABLE_NAME, undefined_section, | |
3068 | (valueT) 0, &zero_address_frag); | |
3069 | }; | |
3070 | return GOT_symbol; | |
886a2506 | 3071 | } |
4670103e | 3072 | return NULL; |
886a2506 NC |
3073 | } |
3074 | ||
4670103e CZ |
3075 | /* Turn a string in input_line_pointer into a floating point constant |
3076 | of type type, and store the appropriate bytes in *litP. The number | |
3077 | of LITTLENUMS emitted is stored in *sizeP. An error message is | |
3078 | returned, or NULL on OK. */ | |
886a2506 | 3079 | |
6d4af3c2 | 3080 | const char * |
4670103e | 3081 | md_atof (int type, char *litP, int *sizeP) |
886a2506 | 3082 | { |
4670103e CZ |
3083 | return ieee_md_atof (type, litP, sizeP, target_big_endian); |
3084 | } | |
886a2506 | 3085 | |
4670103e CZ |
3086 | /* Called for any expression that can not be recognized. When the |
3087 | function is called, `input_line_pointer' will point to the start of | |
3088 | the expression. */ | |
886a2506 | 3089 | |
4670103e CZ |
3090 | void |
3091 | md_operand (expressionS *expressionP ATTRIBUTE_UNUSED) | |
3092 | { | |
3093 | char *p = input_line_pointer; | |
3094 | if (*p == '@') | |
886a2506 | 3095 | { |
4670103e CZ |
3096 | input_line_pointer++; |
3097 | expressionP->X_op = O_symbol; | |
3098 | expression (expressionP); | |
3099 | } | |
3100 | } | |
886a2506 | 3101 | |
4670103e CZ |
3102 | /* This function is called from the function 'expression', it attempts |
3103 | to parse special names (in our case register names). It fills in | |
3104 | the expression with the identified register. It returns TRUE if | |
3105 | it is a register and FALSE otherwise. */ | |
886a2506 | 3106 | |
4670103e CZ |
3107 | bfd_boolean |
3108 | arc_parse_name (const char *name, | |
3109 | struct expressionS *e) | |
3110 | { | |
3111 | struct symbol *sym; | |
886a2506 | 3112 | |
4670103e CZ |
3113 | if (!assembling_insn) |
3114 | return FALSE; | |
886a2506 | 3115 | |
4670103e CZ |
3116 | /* Handle only registers. */ |
3117 | if (e->X_op != O_absent) | |
3118 | return FALSE; | |
886a2506 | 3119 | |
4670103e CZ |
3120 | sym = hash_find (arc_reg_hash, name); |
3121 | if (sym) | |
3122 | { | |
3123 | e->X_op = O_register; | |
3124 | e->X_add_number = S_GET_VALUE (sym); | |
3125 | return TRUE; | |
3126 | } | |
3127 | return FALSE; | |
3128 | } | |
886a2506 | 3129 | |
4670103e CZ |
3130 | /* md_parse_option |
3131 | Invocation line includes a switch not recognized by the base assembler. | |
3132 | See if it's a processor-specific option. | |
886a2506 | 3133 | |
4670103e | 3134 | New options (supported) are: |
886a2506 | 3135 | |
4670103e CZ |
3136 | -mcpu=<cpu name> Assemble for selected processor |
3137 | -EB/-mbig-endian Big-endian | |
3138 | -EL/-mlittle-endian Little-endian | |
3139 | -mrelax Enable relaxation | |
886a2506 | 3140 | |
4670103e CZ |
3141 | The following CPU names are recognized: |
3142 | arc700, av2em, av2hs. */ | |
886a2506 | 3143 | |
4670103e | 3144 | int |
17b9d67d | 3145 | md_parse_option (int c, const char *arg ATTRIBUTE_UNUSED) |
4670103e | 3146 | { |
4670103e CZ |
3147 | switch (c) |
3148 | { | |
3149 | case OPTION_ARC600: | |
3150 | case OPTION_ARC601: | |
3151 | return md_parse_option (OPTION_MCPU, "arc600"); | |
886a2506 | 3152 | |
4670103e CZ |
3153 | case OPTION_ARC700: |
3154 | return md_parse_option (OPTION_MCPU, "arc700"); | |
886a2506 | 3155 | |
4670103e CZ |
3156 | case OPTION_ARCEM: |
3157 | return md_parse_option (OPTION_MCPU, "arcem"); | |
886a2506 | 3158 | |
4670103e CZ |
3159 | case OPTION_ARCHS: |
3160 | return md_parse_option (OPTION_MCPU, "archs"); | |
886a2506 | 3161 | |
4670103e CZ |
3162 | case OPTION_MCPU: |
3163 | { | |
24740d83 | 3164 | arc_select_cpu (arg); |
1adc8a9a | 3165 | mach_type_specified_p = TRUE; |
4670103e CZ |
3166 | break; |
3167 | } | |
886a2506 | 3168 | |
4670103e CZ |
3169 | case OPTION_EB: |
3170 | arc_target_format = "elf32-bigarc"; | |
3171 | byte_order = BIG_ENDIAN; | |
3172 | break; | |
886a2506 | 3173 | |
4670103e CZ |
3174 | case OPTION_EL: |
3175 | arc_target_format = "elf32-littlearc"; | |
3176 | byte_order = LITTLE_ENDIAN; | |
3177 | break; | |
886a2506 | 3178 | |
4670103e CZ |
3179 | case OPTION_CD: |
3180 | /* This option has an effect only on ARC EM. */ | |
3181 | if (arc_target & ARC_OPCODE_ARCv2EM) | |
3182 | arc_features |= ARC_CD; | |
8ddf6b2a CZ |
3183 | else |
3184 | as_warn (_("Code density option invalid for selected CPU")); | |
4670103e | 3185 | break; |
886a2506 | 3186 | |
4670103e CZ |
3187 | case OPTION_RELAX: |
3188 | relaxation_state = 1; | |
3189 | break; | |
886a2506 | 3190 | |
4670103e CZ |
3191 | case OPTION_USER_MODE: |
3192 | case OPTION_LD_EXT_MASK: | |
3193 | case OPTION_SWAP: | |
3194 | case OPTION_NORM: | |
3195 | case OPTION_BARREL_SHIFT: | |
3196 | case OPTION_MIN_MAX: | |
3197 | case OPTION_NO_MPY: | |
3198 | case OPTION_EA: | |
3199 | case OPTION_MUL64: | |
3200 | case OPTION_SIMD: | |
8ddf6b2a CZ |
3201 | /* Dummy options are accepted but have no effect. */ |
3202 | break; | |
3203 | ||
4670103e | 3204 | case OPTION_SPFP: |
8ddf6b2a CZ |
3205 | arc_features |= ARC_SPFP; |
3206 | break; | |
3207 | ||
4670103e | 3208 | case OPTION_DPFP: |
8ddf6b2a CZ |
3209 | arc_features |= ARC_DPFP; |
3210 | break; | |
3211 | ||
4670103e CZ |
3212 | case OPTION_XMAC_D16: |
3213 | case OPTION_XMAC_24: | |
3214 | case OPTION_DSP_PACKA: | |
3215 | case OPTION_CRC: | |
3216 | case OPTION_DVBF: | |
3217 | case OPTION_TELEPHONY: | |
3218 | case OPTION_XYMEMORY: | |
3219 | case OPTION_LOCK: | |
3220 | case OPTION_SWAPE: | |
3221 | case OPTION_RTSC: | |
4670103e CZ |
3222 | /* Dummy options are accepted but have no effect. */ |
3223 | break; | |
886a2506 | 3224 | |
8ddf6b2a CZ |
3225 | case OPTION_FPUDA: |
3226 | /* This option has an effect only on ARC EM. */ | |
3227 | if (arc_target & ARC_OPCODE_ARCv2EM) | |
3228 | arc_features |= ARC_FPUDA; | |
3229 | else | |
3230 | as_warn (_("FPUDA invalid for selected CPU")); | |
3231 | break; | |
3232 | ||
4670103e CZ |
3233 | default: |
3234 | return 0; | |
3235 | } | |
886a2506 | 3236 | |
4670103e CZ |
3237 | return 1; |
3238 | } | |
886a2506 | 3239 | |
4670103e CZ |
3240 | void |
3241 | md_show_usage (FILE *stream) | |
3242 | { | |
3243 | fprintf (stream, _("ARC-specific assembler options:\n")); | |
886a2506 | 3244 | |
4670103e CZ |
3245 | fprintf (stream, " -mcpu=<cpu name>\t assemble for CPU <cpu name>\n"); |
3246 | fprintf (stream, | |
3247 | " -mcode-density\t enable code density option for ARC EM\n"); | |
3248 | ||
3249 | fprintf (stream, _("\ | |
3250 | -EB assemble code for a big-endian cpu\n")); | |
3251 | fprintf (stream, _("\ | |
3252 | -EL assemble code for a little-endian cpu\n")); | |
3253 | fprintf (stream, _("\ | |
3254 | -mrelax Enable relaxation\n")); | |
886a2506 | 3255 | |
886a2506 NC |
3256 | } |
3257 | ||
3258 | /* Find the proper relocation for the given opcode. */ | |
3259 | ||
3260 | static extended_bfd_reloc_code_real_type | |
3261 | find_reloc (const char *name, | |
3262 | const char *opcodename, | |
3263 | const struct arc_flags *pflags, | |
3264 | int nflg, | |
3265 | extended_bfd_reloc_code_real_type reloc) | |
3266 | { | |
3267 | unsigned int i; | |
3268 | int j; | |
24b368f8 | 3269 | bfd_boolean found_flag, tmp; |
886a2506 NC |
3270 | extended_bfd_reloc_code_real_type ret = BFD_RELOC_UNUSED; |
3271 | ||
3272 | for (i = 0; i < arc_num_equiv_tab; i++) | |
3273 | { | |
3274 | const struct arc_reloc_equiv_tab *r = &arc_reloc_equiv[i]; | |
3275 | ||
3276 | /* Find the entry. */ | |
3277 | if (strcmp (name, r->name)) | |
3278 | continue; | |
3279 | if (r->mnemonic && (strcmp (r->mnemonic, opcodename))) | |
3280 | continue; | |
24b368f8 | 3281 | if (r->flags[0]) |
886a2506 NC |
3282 | { |
3283 | if (!nflg) | |
3284 | continue; | |
3285 | found_flag = FALSE; | |
24b368f8 CZ |
3286 | unsigned * psflg = (unsigned *)r->flags; |
3287 | do | |
3288 | { | |
3289 | tmp = FALSE; | |
3290 | for (j = 0; j < nflg; j++) | |
3291 | if (!strcmp (pflags[j].name, | |
3292 | arc_flag_operands[*psflg].name)) | |
3293 | { | |
3294 | tmp = TRUE; | |
3295 | break; | |
3296 | } | |
3297 | if (!tmp) | |
3298 | { | |
3299 | found_flag = FALSE; | |
3300 | break; | |
3301 | } | |
3302 | else | |
3303 | { | |
3304 | found_flag = TRUE; | |
3305 | } | |
3306 | ++ psflg; | |
3307 | } while (*psflg); | |
3308 | ||
886a2506 NC |
3309 | if (!found_flag) |
3310 | continue; | |
3311 | } | |
3312 | ||
3313 | if (reloc != r->oldreloc) | |
3314 | continue; | |
3315 | /* Found it. */ | |
3316 | ret = r->newreloc; | |
3317 | break; | |
3318 | } | |
3319 | ||
3320 | if (ret == BFD_RELOC_UNUSED) | |
3321 | as_bad (_("Unable to find %s relocation for instruction %s"), | |
3322 | name, opcodename); | |
3323 | return ret; | |
3324 | } | |
3325 | ||
4670103e CZ |
3326 | /* All the symbol types that are allowed to be used for |
3327 | relaxation. */ | |
3328 | ||
3329 | static bfd_boolean | |
3330 | may_relax_expr (expressionS tok) | |
3331 | { | |
3332 | /* Check if we have unrelaxable relocs. */ | |
3333 | switch (tok.X_md) | |
3334 | { | |
3335 | default: | |
3336 | break; | |
3337 | case O_plt: | |
3338 | return FALSE; | |
3339 | } | |
3340 | ||
3341 | switch (tok.X_op) | |
3342 | { | |
3343 | case O_symbol: | |
3344 | case O_multiply: | |
3345 | case O_divide: | |
3346 | case O_modulus: | |
3347 | case O_add: | |
3348 | case O_subtract: | |
3349 | break; | |
3350 | ||
3351 | default: | |
3352 | return FALSE; | |
3353 | } | |
3354 | return TRUE; | |
3355 | } | |
3356 | ||
3357 | /* Checks if flags are in line with relaxable insn. */ | |
3358 | ||
3359 | static bfd_boolean | |
3360 | relaxable_flag (const struct arc_relaxable_ins *ins, | |
3361 | const struct arc_flags *pflags, | |
3362 | int nflgs) | |
3363 | { | |
3364 | unsigned flag_class, | |
3365 | flag, | |
3366 | flag_class_idx = 0, | |
3367 | flag_idx = 0; | |
3368 | ||
3369 | const struct arc_flag_operand *flag_opand; | |
3370 | int i, counttrue = 0; | |
3371 | ||
3372 | /* Iterate through flags classes. */ | |
3373 | while ((flag_class = ins->flag_classes[flag_class_idx]) != 0) | |
3374 | { | |
3375 | /* Iterate through flags in flag class. */ | |
3376 | while ((flag = arc_flag_classes[flag_class].flags[flag_idx]) | |
3377 | != 0) | |
3378 | { | |
3379 | flag_opand = &arc_flag_operands[flag]; | |
3380 | /* Iterate through flags in ins to compare. */ | |
3381 | for (i = 0; i < nflgs; ++i) | |
3382 | { | |
3383 | if (strcmp (flag_opand->name, pflags[i].name) == 0) | |
3384 | ++counttrue; | |
3385 | } | |
3386 | ||
3387 | ++flag_idx; | |
3388 | } | |
3389 | ||
3390 | ++flag_class_idx; | |
3391 | flag_idx = 0; | |
3392 | } | |
3393 | ||
3394 | /* If counttrue == nflgs, then all flags have been found. */ | |
3395 | return (counttrue == nflgs ? TRUE : FALSE); | |
3396 | } | |
3397 | ||
3398 | /* Checks if operands are in line with relaxable insn. */ | |
3399 | ||
3400 | static bfd_boolean | |
3401 | relaxable_operand (const struct arc_relaxable_ins *ins, | |
3402 | const expressionS *tok, | |
3403 | int ntok) | |
3404 | { | |
3405 | const enum rlx_operand_type *operand = &ins->operands[0]; | |
3406 | int i = 0; | |
3407 | ||
3408 | while (*operand != EMPTY) | |
3409 | { | |
3410 | const expressionS *epr = &tok[i]; | |
3411 | ||
3412 | if (i != 0 && i >= ntok) | |
3413 | return FALSE; | |
3414 | ||
3415 | switch (*operand) | |
3416 | { | |
3417 | case IMMEDIATE: | |
3418 | if (!(epr->X_op == O_multiply | |
3419 | || epr->X_op == O_divide | |
3420 | || epr->X_op == O_modulus | |
3421 | || epr->X_op == O_add | |
3422 | || epr->X_op == O_subtract | |
3423 | || epr->X_op == O_symbol)) | |
3424 | return FALSE; | |
3425 | break; | |
3426 | ||
3427 | case REGISTER_DUP: | |
3428 | if ((i <= 0) | |
3429 | || (epr->X_add_number != tok[i - 1].X_add_number)) | |
3430 | return FALSE; | |
3431 | /* Fall through. */ | |
3432 | case REGISTER: | |
3433 | if (epr->X_op != O_register) | |
3434 | return FALSE; | |
3435 | break; | |
3436 | ||
3437 | case REGISTER_S: | |
3438 | if (epr->X_op != O_register) | |
3439 | return FALSE; | |
3440 | ||
3441 | switch (epr->X_add_number) | |
3442 | { | |
3443 | case 0: case 1: case 2: case 3: | |
3444 | case 12: case 13: case 14: case 15: | |
3445 | break; | |
3446 | default: | |
3447 | return FALSE; | |
3448 | } | |
3449 | break; | |
3450 | ||
3451 | case REGISTER_NO_GP: | |
3452 | if ((epr->X_op != O_register) | |
3453 | || (epr->X_add_number == 26)) /* 26 is the gp register. */ | |
3454 | return FALSE; | |
3455 | break; | |
3456 | ||
3457 | case BRACKET: | |
3458 | if (epr->X_op != O_bracket) | |
3459 | return FALSE; | |
3460 | break; | |
3461 | ||
3462 | default: | |
3463 | /* Don't understand, bail out. */ | |
3464 | return FALSE; | |
3465 | break; | |
3466 | } | |
3467 | ||
3468 | ++i; | |
3469 | operand = &ins->operands[i]; | |
3470 | } | |
3471 | ||
3472 | return (i == ntok ? TRUE : FALSE); | |
3473 | } | |
3474 | ||
3475 | /* Return TRUE if this OPDCODE is a candidate for relaxation. */ | |
3476 | ||
3477 | static bfd_boolean | |
3478 | relax_insn_p (const struct arc_opcode *opcode, | |
3479 | const expressionS *tok, | |
3480 | int ntok, | |
3481 | const struct arc_flags *pflags, | |
3482 | int nflg) | |
3483 | { | |
3484 | unsigned i; | |
3485 | bfd_boolean rv = FALSE; | |
3486 | ||
3487 | /* Check the relaxation table. */ | |
3488 | for (i = 0; i < arc_num_relaxable_ins && relaxation_state; ++i) | |
3489 | { | |
3490 | const struct arc_relaxable_ins *arc_rlx_ins = &arc_relaxable_insns[i]; | |
3491 | ||
3492 | if ((strcmp (opcode->name, arc_rlx_ins->mnemonic_r) == 0) | |
3493 | && may_relax_expr (tok[arc_rlx_ins->opcheckidx]) | |
3494 | && relaxable_operand (arc_rlx_ins, tok, ntok) | |
3495 | && relaxable_flag (arc_rlx_ins, pflags, nflg)) | |
3496 | { | |
3497 | rv = TRUE; | |
3498 | frag_now->fr_subtype = arc_relaxable_insns[i].subtype; | |
3499 | memcpy (&frag_now->tc_frag_data.tok, tok, | |
3500 | sizeof (expressionS) * ntok); | |
3501 | memcpy (&frag_now->tc_frag_data.pflags, pflags, | |
3502 | sizeof (struct arc_flags) * nflg); | |
3503 | frag_now->tc_frag_data.nflg = nflg; | |
3504 | frag_now->tc_frag_data.ntok = ntok; | |
3505 | break; | |
3506 | } | |
3507 | } | |
3508 | ||
3509 | return rv; | |
3510 | } | |
3511 | ||
886a2506 NC |
3512 | /* Turn an opcode description and a set of arguments into |
3513 | an instruction and a fixup. */ | |
3514 | ||
3515 | static void | |
3516 | assemble_insn (const struct arc_opcode *opcode, | |
3517 | const expressionS *tok, | |
3518 | int ntok, | |
3519 | const struct arc_flags *pflags, | |
3520 | int nflg, | |
3521 | struct arc_insn *insn) | |
3522 | { | |
3523 | const expressionS *reloc_exp = NULL; | |
3524 | unsigned image; | |
3525 | const unsigned char *argidx; | |
3526 | int i; | |
3527 | int tokidx = 0; | |
3528 | unsigned char pcrel = 0; | |
3529 | bfd_boolean needGOTSymbol; | |
3530 | bfd_boolean has_delay_slot = FALSE; | |
3531 | extended_bfd_reloc_code_real_type reloc = BFD_RELOC_UNUSED; | |
3532 | ||
3533 | memset (insn, 0, sizeof (*insn)); | |
3534 | image = opcode->opcode; | |
3535 | ||
3536 | pr_debug ("%s:%d: assemble_insn: %s using opcode %x\n", | |
3537 | frag_now->fr_file, frag_now->fr_line, opcode->name, | |
3538 | opcode->opcode); | |
3539 | ||
3540 | /* Handle operands. */ | |
3541 | for (argidx = opcode->operands; *argidx; ++argidx) | |
3542 | { | |
3543 | const struct arc_operand *operand = &arc_operands[*argidx]; | |
3544 | const expressionS *t = (const expressionS *) 0; | |
3545 | ||
3546 | if ((operand->flags & ARC_OPERAND_FAKE) | |
3547 | && !(operand->flags & ARC_OPERAND_BRAKET)) | |
3548 | continue; | |
3549 | ||
3550 | if (operand->flags & ARC_OPERAND_DUPLICATE) | |
3551 | { | |
3552 | /* Duplicate operand, already inserted. */ | |
3553 | tokidx ++; | |
3554 | continue; | |
3555 | } | |
3556 | ||
3557 | if (tokidx >= ntok) | |
3558 | { | |
3559 | abort (); | |
3560 | } | |
3561 | else | |
3562 | t = &tok[tokidx++]; | |
3563 | ||
3564 | /* Regardless if we have a reloc or not mark the instruction | |
3565 | limm if it is the case. */ | |
3566 | if (operand->flags & ARC_OPERAND_LIMM) | |
3567 | insn->has_limm = TRUE; | |
3568 | ||
3569 | switch (t->X_op) | |
3570 | { | |
3571 | case O_register: | |
3572 | image = insert_operand (image, operand, regno (t->X_add_number), | |
3573 | NULL, 0); | |
3574 | break; | |
3575 | ||
3576 | case O_constant: | |
3577 | image = insert_operand (image, operand, t->X_add_number, NULL, 0); | |
3578 | reloc_exp = t; | |
3579 | if (operand->flags & ARC_OPERAND_LIMM) | |
3580 | insn->limm = t->X_add_number; | |
3581 | break; | |
3582 | ||
3583 | case O_bracket: | |
3584 | /* Ignore brackets. */ | |
3585 | break; | |
3586 | ||
3587 | case O_absent: | |
3588 | gas_assert (operand->flags & ARC_OPERAND_IGNORE); | |
3589 | break; | |
3590 | ||
3591 | case O_subtract: | |
3592 | /* Maybe register range. */ | |
3593 | if ((t->X_add_number == 0) | |
3594 | && contains_register (t->X_add_symbol) | |
3595 | && contains_register (t->X_op_symbol)) | |
3596 | { | |
3597 | int regs; | |
3598 | ||
3599 | regs = get_register (t->X_add_symbol); | |
3600 | regs <<= 16; | |
3601 | regs |= get_register (t->X_op_symbol); | |
3602 | image = insert_operand (image, operand, regs, NULL, 0); | |
3603 | break; | |
3604 | } | |
3605 | ||
3606 | default: | |
3607 | /* This operand needs a relocation. */ | |
3608 | needGOTSymbol = FALSE; | |
3609 | ||
3610 | switch (t->X_md) | |
3611 | { | |
3612 | case O_plt: | |
6ec1f282 CZ |
3613 | if (opcode->class == JUMP) |
3614 | as_bad_where (frag_now->fr_file, frag_now->fr_line, | |
3615 | _("Unable to use @plt relocatio for insn %s"), | |
3616 | opcode->name); | |
886a2506 NC |
3617 | needGOTSymbol = TRUE; |
3618 | reloc = find_reloc ("plt", opcode->name, | |
3619 | pflags, nflg, | |
3620 | operand->default_reloc); | |
3621 | break; | |
3622 | ||
3623 | case O_gotoff: | |
3624 | case O_gotpc: | |
3625 | needGOTSymbol = TRUE; | |
3626 | reloc = ARC_RELOC_TABLE (t->X_md)->reloc; | |
3627 | break; | |
3628 | case O_pcl: | |
3629 | reloc = ARC_RELOC_TABLE (t->X_md)->reloc; | |
6ec1f282 | 3630 | if (ARC_SHORT (opcode->mask) || opcode->class == JUMP) |
886a2506 NC |
3631 | as_bad_where (frag_now->fr_file, frag_now->fr_line, |
3632 | _("Unable to use @pcl relocation for insn %s"), | |
3633 | opcode->name); | |
3634 | break; | |
3635 | case O_sda: | |
3636 | reloc = find_reloc ("sda", opcode->name, | |
3637 | pflags, nflg, | |
3638 | operand->default_reloc); | |
3639 | break; | |
3640 | case O_tlsgd: | |
3641 | case O_tlsie: | |
3642 | needGOTSymbol = TRUE; | |
3643 | /* Fall-through. */ | |
3644 | ||
3645 | case O_tpoff: | |
3646 | case O_dtpoff: | |
3647 | reloc = ARC_RELOC_TABLE (t->X_md)->reloc; | |
3648 | break; | |
3649 | ||
3650 | case O_tpoff9: /*FIXME! Check for the conditionality of | |
3651 | the insn. */ | |
3652 | case O_dtpoff9: /*FIXME! Check for the conditionality of | |
3653 | the insn. */ | |
3654 | as_bad (_("TLS_*_S9 relocs are not supported yet")); | |
3655 | break; | |
3656 | ||
3657 | default: | |
3658 | /* Just consider the default relocation. */ | |
3659 | reloc = operand->default_reloc; | |
3660 | break; | |
3661 | } | |
3662 | ||
3663 | if (needGOTSymbol && (GOT_symbol == NULL)) | |
3664 | GOT_symbol = symbol_find_or_make (GLOBAL_OFFSET_TABLE_NAME); | |
3665 | ||
3666 | reloc_exp = t; | |
3667 | ||
3668 | #if 0 | |
3669 | if (reloc > 0) | |
3670 | { | |
3671 | /* sanity checks. */ | |
3672 | reloc_howto_type *reloc_howto | |
3673 | = bfd_reloc_type_lookup (stdoutput, | |
3674 | (bfd_reloc_code_real_type) reloc); | |
3675 | unsigned reloc_bitsize = reloc_howto->bitsize; | |
3676 | if (reloc_howto->rightshift) | |
3677 | reloc_bitsize -= reloc_howto->rightshift; | |
3678 | if (reloc_bitsize != operand->bits) | |
3679 | { | |
3680 | as_bad (_("invalid relocation %s for field"), | |
3681 | bfd_get_reloc_code_name (reloc)); | |
3682 | return; | |
3683 | } | |
3684 | } | |
3685 | #endif | |
3686 | if (insn->nfixups >= MAX_INSN_FIXUPS) | |
3687 | as_fatal (_("too many fixups")); | |
3688 | ||
3689 | struct arc_fixup *fixup; | |
3690 | fixup = &insn->fixups[insn->nfixups++]; | |
3691 | fixup->exp = *t; | |
3692 | fixup->reloc = reloc; | |
3693 | pcrel = (operand->flags & ARC_OPERAND_PCREL) ? 1 : 0; | |
3694 | fixup->pcrel = pcrel; | |
3695 | fixup->islong = (operand->flags & ARC_OPERAND_LIMM) ? | |
3696 | TRUE : FALSE; | |
3697 | break; | |
3698 | } | |
3699 | } | |
3700 | ||
3701 | /* Handle flags. */ | |
3702 | for (i = 0; i < nflg; i++) | |
3703 | { | |
f36e33da | 3704 | const struct arc_flag_operand *flg_operand = pflags[i].flgp; |
886a2506 NC |
3705 | |
3706 | /* Check if the instruction has a delay slot. */ | |
3707 | if (!strcmp (flg_operand->name, "d")) | |
3708 | has_delay_slot = TRUE; | |
3709 | ||
3710 | /* There is an exceptional case when we cannot insert a flag | |
3711 | just as it is. The .T flag must be handled in relation with | |
3712 | the relative address. */ | |
3713 | if (!strcmp (flg_operand->name, "t") | |
3714 | || !strcmp (flg_operand->name, "nt")) | |
3715 | { | |
3716 | unsigned bitYoperand = 0; | |
3717 | /* FIXME! move selection bbit/brcc in arc-opc.c. */ | |
3718 | if (!strcmp (flg_operand->name, "t")) | |
3719 | if (!strcmp (opcode->name, "bbit0") | |
3720 | || !strcmp (opcode->name, "bbit1")) | |
3721 | bitYoperand = arc_NToperand; | |
3722 | else | |
3723 | bitYoperand = arc_Toperand; | |
3724 | else | |
3725 | if (!strcmp (opcode->name, "bbit0") | |
3726 | || !strcmp (opcode->name, "bbit1")) | |
3727 | bitYoperand = arc_Toperand; | |
3728 | else | |
3729 | bitYoperand = arc_NToperand; | |
3730 | ||
3731 | gas_assert (reloc_exp != NULL); | |
3732 | if (reloc_exp->X_op == O_constant) | |
3733 | { | |
3734 | /* Check if we have a constant and solved it | |
3735 | immediately. */ | |
3736 | offsetT val = reloc_exp->X_add_number; | |
3737 | image |= insert_operand (image, &arc_operands[bitYoperand], | |
3738 | val, NULL, 0); | |
3739 | } | |
3740 | else | |
3741 | { | |
3742 | struct arc_fixup *fixup; | |
3743 | ||
3744 | if (insn->nfixups >= MAX_INSN_FIXUPS) | |
3745 | as_fatal (_("too many fixups")); | |
3746 | ||
3747 | fixup = &insn->fixups[insn->nfixups++]; | |
3748 | fixup->exp = *reloc_exp; | |
3749 | fixup->reloc = -bitYoperand; | |
3750 | fixup->pcrel = pcrel; | |
3751 | fixup->islong = FALSE; | |
3752 | } | |
3753 | } | |
3754 | else | |
3755 | image |= (flg_operand->code & ((1 << flg_operand->bits) - 1)) | |
3756 | << flg_operand->shift; | |
3757 | } | |
3758 | ||
4670103e CZ |
3759 | insn->relax = relax_insn_p (opcode, tok, ntok, pflags, nflg); |
3760 | ||
886a2506 NC |
3761 | /* Short instruction? */ |
3762 | insn->short_insn = ARC_SHORT (opcode->mask) ? TRUE : FALSE; | |
3763 | ||
3764 | insn->insn = image; | |
3765 | ||
3766 | /* Update last insn status. */ | |
3767 | arc_last_insns[1] = arc_last_insns[0]; | |
3768 | arc_last_insns[0].opcode = opcode; | |
3769 | arc_last_insns[0].has_limm = insn->has_limm; | |
3770 | arc_last_insns[0].has_delay_slot = has_delay_slot; | |
3771 | ||
3772 | /* Check if the current instruction is legally used. */ | |
3773 | if (arc_last_insns[1].has_delay_slot | |
3774 | && is_br_jmp_insn_p (arc_last_insns[0].opcode)) | |
3775 | as_bad_where (frag_now->fr_file, frag_now->fr_line, | |
3776 | _("A jump/branch instruction in delay slot.")); | |
3777 | } | |
3778 | ||
886a2506 NC |
3779 | void |
3780 | arc_handle_align (fragS* fragP) | |
3781 | { | |
3782 | if ((fragP)->fr_type == rs_align_code) | |
3783 | { | |
3784 | char *dest = (fragP)->fr_literal + (fragP)->fr_fix; | |
3785 | valueT count = ((fragP)->fr_next->fr_address | |
3786 | - (fragP)->fr_address - (fragP)->fr_fix); | |
3787 | ||
3788 | (fragP)->fr_var = 2; | |
3789 | ||
3790 | if (count & 1)/* Padding in the gap till the next 2-byte | |
3791 | boundary with 0s. */ | |
3792 | { | |
3793 | (fragP)->fr_fix++; | |
3794 | *dest++ = 0; | |
3795 | } | |
3796 | /* Writing nop_s. */ | |
3797 | md_number_to_chars (dest, NOP_OPCODE_S, 2); | |
3798 | } | |
3799 | } | |
3800 | ||
3801 | /* Here we decide which fixups can be adjusted to make them relative | |
3802 | to the beginning of the section instead of the symbol. Basically | |
3803 | we need to make sure that the dynamic relocations are done | |
3804 | correctly, so in some cases we force the original symbol to be | |
3805 | used. */ | |
3806 | ||
3807 | int | |
3808 | tc_arc_fix_adjustable (fixS *fixP) | |
3809 | { | |
3810 | ||
3811 | /* Prevent all adjustments to global symbols. */ | |
3812 | if (S_IS_EXTERNAL (fixP->fx_addsy)) | |
3813 | return 0; | |
3814 | if (S_IS_WEAK (fixP->fx_addsy)) | |
3815 | return 0; | |
3816 | ||
3817 | /* Adjust_reloc_syms doesn't know about the GOT. */ | |
3818 | switch (fixP->fx_r_type) | |
3819 | { | |
3820 | case BFD_RELOC_ARC_GOTPC32: | |
3821 | case BFD_RELOC_ARC_PLT32: | |
3822 | case BFD_RELOC_ARC_S25H_PCREL_PLT: | |
3823 | case BFD_RELOC_ARC_S21H_PCREL_PLT: | |
3824 | case BFD_RELOC_ARC_S25W_PCREL_PLT: | |
3825 | case BFD_RELOC_ARC_S21W_PCREL_PLT: | |
3826 | return 0; | |
3827 | ||
3828 | default: | |
3829 | break; | |
3830 | } | |
3831 | ||
841fdfcd | 3832 | return 1; |
886a2506 NC |
3833 | } |
3834 | ||
3835 | /* Compute the reloc type of an expression EXP. */ | |
3836 | ||
3837 | static void | |
3838 | arc_check_reloc (expressionS *exp, | |
3839 | bfd_reloc_code_real_type *r_type_p) | |
3840 | { | |
3841 | if (*r_type_p == BFD_RELOC_32 | |
3842 | && exp->X_op == O_subtract | |
3843 | && exp->X_op_symbol != NULL | |
3844 | && exp->X_op_symbol->bsym->section == now_seg) | |
6f4b1afc | 3845 | *r_type_p = BFD_RELOC_ARC_32_PCREL; |
886a2506 NC |
3846 | } |
3847 | ||
3848 | ||
3849 | /* Add expression EXP of SIZE bytes to offset OFF of fragment FRAG. */ | |
3850 | ||
3851 | void | |
3852 | arc_cons_fix_new (fragS *frag, | |
3853 | int off, | |
3854 | int size, | |
3855 | expressionS *exp, | |
3856 | bfd_reloc_code_real_type r_type) | |
3857 | { | |
3858 | r_type = BFD_RELOC_UNUSED; | |
3859 | ||
3860 | switch (size) | |
3861 | { | |
3862 | case 1: | |
3863 | r_type = BFD_RELOC_8; | |
3864 | break; | |
3865 | ||
3866 | case 2: | |
3867 | r_type = BFD_RELOC_16; | |
3868 | break; | |
3869 | ||
3870 | case 3: | |
3871 | r_type = BFD_RELOC_24; | |
3872 | break; | |
3873 | ||
3874 | case 4: | |
3875 | r_type = BFD_RELOC_32; | |
3876 | arc_check_reloc (exp, &r_type); | |
3877 | break; | |
3878 | ||
3879 | case 8: | |
3880 | r_type = BFD_RELOC_64; | |
3881 | break; | |
3882 | ||
3883 | default: | |
3884 | as_bad (_("unsupported BFD relocation size %u"), size); | |
3885 | r_type = BFD_RELOC_UNUSED; | |
3886 | } | |
3887 | ||
3888 | fix_new_exp (frag, off, size, exp, 0, r_type); | |
3889 | } | |
3890 | ||
3891 | /* The actual routine that checks the ZOL conditions. */ | |
3892 | ||
3893 | static void | |
3894 | check_zol (symbolS *s) | |
3895 | { | |
3896 | switch (arc_mach_type) | |
3897 | { | |
3898 | case bfd_mach_arc_arcv2: | |
3899 | if (arc_target & ARC_OPCODE_ARCv2EM) | |
3900 | return; | |
3901 | ||
3902 | if (is_br_jmp_insn_p (arc_last_insns[0].opcode) | |
3903 | || arc_last_insns[1].has_delay_slot) | |
3904 | as_bad (_("Jump/Branch instruction detected at the end of the ZOL label @%s"), | |
3905 | S_GET_NAME (s)); | |
3906 | ||
3907 | break; | |
3908 | case bfd_mach_arc_arc600: | |
3909 | ||
3910 | if (is_kernel_insn_p (arc_last_insns[0].opcode)) | |
3911 | as_bad (_("Kernel instruction detected at the end of the ZOL label @%s"), | |
3912 | S_GET_NAME (s)); | |
3913 | ||
3914 | if (arc_last_insns[0].has_limm | |
3915 | && is_br_jmp_insn_p (arc_last_insns[0].opcode)) | |
3916 | as_bad (_("A jump instruction with long immediate detected at the \ | |
3917 | end of the ZOL label @%s"), S_GET_NAME (s)); | |
3918 | ||
3919 | /* Fall through. */ | |
8699fc3e | 3920 | case bfd_mach_arc_nps400: |
886a2506 NC |
3921 | case bfd_mach_arc_arc700: |
3922 | if (arc_last_insns[0].has_delay_slot) | |
3923 | as_bad (_("An illegal use of delay slot detected at the end of the ZOL label @%s"), | |
3924 | S_GET_NAME (s)); | |
3925 | ||
3926 | break; | |
3927 | default: | |
3928 | break; | |
3929 | } | |
3930 | } | |
3931 | ||
3932 | /* If ZOL end check the last two instruction for illegals. */ | |
3933 | void | |
3934 | arc_frob_label (symbolS * sym) | |
3935 | { | |
3936 | if (ARC_GET_FLAG (sym) & ARC_FLAG_ZOL) | |
3937 | check_zol (sym); | |
3938 | ||
3939 | dwarf2_emit_label (sym); | |
ea1562b3 | 3940 | } |
4670103e CZ |
3941 | |
3942 | /* Used because generic relaxation assumes a pc-rel value whilst we | |
3943 | also relax instructions that use an absolute value resolved out of | |
3944 | relative values (if that makes any sense). An example: 'add r1, | |
3945 | r2, @.L2 - .' The symbols . and @.L2 are relative to the section | |
3946 | but if they're in the same section we can subtract the section | |
3947 | offset relocation which ends up in a resolved value. So if @.L2 is | |
3948 | .text + 0x50 and . is .text + 0x10, we can say that .text + 0x50 - | |
3949 | .text + 0x40 = 0x10. */ | |
3950 | int | |
3951 | arc_pcrel_adjust (fragS *fragP) | |
3952 | { | |
3953 | if (!fragP->tc_frag_data.pcrel) | |
3954 | return fragP->fr_address + fragP->fr_fix; | |
3955 | ||
3956 | return 0; | |
3957 | } | |
726c18e1 CZ |
3958 | |
3959 | /* Initialize the DWARF-2 unwind information for this procedure. */ | |
3960 | ||
3961 | void | |
3962 | tc_arc_frame_initial_instructions (void) | |
3963 | { | |
3964 | /* Stack pointer is register 28. */ | |
3965 | cfi_add_CFA_def_cfa_register (28); | |
3966 | } | |
3967 | ||
3968 | int | |
3969 | tc_arc_regname_to_dw2regnum (char *regname) | |
3970 | { | |
3971 | struct symbol *sym; | |
3972 | ||
3973 | sym = hash_find (arc_reg_hash, regname); | |
3974 | if (sym) | |
3975 | return S_GET_VALUE (sym); | |
3976 | ||
3977 | return -1; | |
3978 | } | |
37ab9779 CZ |
3979 | |
3980 | /* Adjust the symbol table. Delete found AUX register symbols. */ | |
3981 | ||
3982 | void | |
3983 | arc_adjust_symtab (void) | |
3984 | { | |
3985 | symbolS * sym; | |
3986 | ||
3987 | for (sym = symbol_rootP; sym != NULL; sym = symbol_next (sym)) | |
3988 | { | |
3989 | /* I've created a symbol during parsing process. Now, remove | |
3990 | the symbol as it is found to be an AUX register. */ | |
3991 | if (ARC_GET_FLAG (sym) & ARC_FLAG_AUX) | |
3992 | symbol_remove (sym, &symbol_rootP, &symbol_lastP); | |
3993 | } | |
3994 | ||
3995 | /* Now do generic ELF adjustments. */ | |
3996 | elf_adjust_symtab (); | |
3997 | } | |
b99747ae CZ |
3998 | |
3999 | static void | |
4000 | tokenize_extinsn (extInstruction_t *einsn) | |
4001 | { | |
4002 | char *p, c; | |
4003 | char *insn_name; | |
4004 | unsigned char major_opcode; | |
4005 | unsigned char sub_opcode; | |
4006 | unsigned char syntax_class = 0; | |
4007 | unsigned char syntax_class_modifiers = 0; | |
4008 | unsigned char suffix_class = 0; | |
4009 | unsigned int i; | |
4010 | ||
4011 | SKIP_WHITESPACE (); | |
4012 | ||
4013 | /* 1st: get instruction name. */ | |
4014 | p = input_line_pointer; | |
4015 | c = get_symbol_name (&p); | |
4016 | ||
4017 | insn_name = xstrdup (p); | |
4018 | restore_line_pointer (c); | |
4019 | ||
4020 | /* 2nd: get major opcode. */ | |
4021 | if (*input_line_pointer != ',') | |
4022 | { | |
4023 | as_bad (_("expected comma after instruction name")); | |
4024 | ignore_rest_of_line (); | |
4025 | return; | |
4026 | } | |
4027 | input_line_pointer++; | |
4028 | major_opcode = get_absolute_expression (); | |
4029 | ||
4030 | /* 3rd: get sub-opcode. */ | |
4031 | SKIP_WHITESPACE (); | |
4032 | ||
4033 | if (*input_line_pointer != ',') | |
4034 | { | |
4035 | as_bad (_("expected comma after major opcode")); | |
4036 | ignore_rest_of_line (); | |
4037 | return; | |
4038 | } | |
4039 | input_line_pointer++; | |
4040 | sub_opcode = get_absolute_expression (); | |
4041 | ||
4042 | /* 4th: get suffix class. */ | |
4043 | SKIP_WHITESPACE (); | |
4044 | ||
4045 | if (*input_line_pointer != ',') | |
4046 | { | |
4047 | as_bad ("expected comma after sub opcode"); | |
4048 | ignore_rest_of_line (); | |
4049 | return; | |
4050 | } | |
4051 | input_line_pointer++; | |
4052 | ||
4053 | while (1) | |
4054 | { | |
4055 | SKIP_WHITESPACE (); | |
4056 | ||
4057 | for (i = 0; i < ARRAY_SIZE (suffixclass); i++) | |
4058 | { | |
4059 | if (!strncmp (suffixclass[i].name, input_line_pointer, | |
4060 | suffixclass[i].len)) | |
4061 | { | |
4062 | suffix_class |= suffixclass[i].class; | |
4063 | input_line_pointer += suffixclass[i].len; | |
4064 | break; | |
4065 | } | |
4066 | } | |
4067 | ||
4068 | if (i == ARRAY_SIZE (suffixclass)) | |
4069 | { | |
4070 | as_bad ("invalid suffix class"); | |
4071 | ignore_rest_of_line (); | |
4072 | return; | |
4073 | } | |
4074 | ||
4075 | SKIP_WHITESPACE (); | |
4076 | ||
4077 | if (*input_line_pointer == '|') | |
4078 | input_line_pointer++; | |
4079 | else | |
4080 | break; | |
4081 | } | |
4082 | ||
4083 | /* 5th: get syntax class and syntax class modifiers. */ | |
4084 | if (*input_line_pointer != ',') | |
4085 | { | |
4086 | as_bad ("expected comma after suffix class"); | |
4087 | ignore_rest_of_line (); | |
4088 | return; | |
4089 | } | |
4090 | input_line_pointer++; | |
4091 | ||
4092 | while (1) | |
4093 | { | |
4094 | SKIP_WHITESPACE (); | |
4095 | ||
4096 | for (i = 0; i < ARRAY_SIZE (syntaxclassmod); i++) | |
4097 | { | |
4098 | if (!strncmp (syntaxclassmod[i].name, | |
4099 | input_line_pointer, | |
4100 | syntaxclassmod[i].len)) | |
4101 | { | |
4102 | syntax_class_modifiers |= syntaxclassmod[i].class; | |
4103 | input_line_pointer += syntaxclassmod[i].len; | |
4104 | break; | |
4105 | } | |
4106 | } | |
4107 | ||
4108 | if (i == ARRAY_SIZE (syntaxclassmod)) | |
4109 | { | |
4110 | for (i = 0; i < ARRAY_SIZE (syntaxclass); i++) | |
4111 | { | |
4112 | if (!strncmp (syntaxclass[i].name, | |
4113 | input_line_pointer, | |
4114 | syntaxclass[i].len)) | |
4115 | { | |
4116 | syntax_class |= syntaxclass[i].class; | |
4117 | input_line_pointer += syntaxclass[i].len; | |
4118 | break; | |
4119 | } | |
4120 | } | |
4121 | ||
4122 | if (i == ARRAY_SIZE (syntaxclass)) | |
4123 | { | |
4124 | as_bad ("missing syntax class"); | |
4125 | ignore_rest_of_line (); | |
4126 | return; | |
4127 | } | |
4128 | } | |
4129 | ||
4130 | SKIP_WHITESPACE (); | |
4131 | ||
4132 | if (*input_line_pointer == '|') | |
4133 | input_line_pointer++; | |
4134 | else | |
4135 | break; | |
4136 | } | |
4137 | ||
4138 | demand_empty_rest_of_line (); | |
4139 | ||
4140 | einsn->name = insn_name; | |
4141 | einsn->major = major_opcode; | |
4142 | einsn->minor = sub_opcode; | |
4143 | einsn->syntax = syntax_class; | |
4144 | einsn->modsyn = syntax_class_modifiers; | |
4145 | einsn->suffix = suffix_class; | |
4146 | einsn->flags = syntax_class | |
4147 | | (syntax_class_modifiers & ARC_OP1_IMM_IMPLIED ? 0x10 : 0); | |
4148 | } | |
4149 | ||
4150 | /* Generate an extension section. */ | |
4151 | ||
4152 | static int | |
4153 | arc_set_ext_seg (void) | |
4154 | { | |
4155 | if (!arcext_section) | |
4156 | { | |
4157 | arcext_section = subseg_new (".arcextmap", 0); | |
4158 | bfd_set_section_flags (stdoutput, arcext_section, | |
4159 | SEC_READONLY | SEC_HAS_CONTENTS); | |
4160 | } | |
4161 | else | |
4162 | subseg_set (arcext_section, 0); | |
4163 | return 1; | |
4164 | } | |
4165 | ||
4166 | /* Create an extension instruction description in the arc extension | |
4167 | section of the output file. | |
4168 | The structure for an instruction is like this: | |
4169 | [0]: Length of the record. | |
4170 | [1]: Type of the record. | |
4171 | ||
4172 | [2]: Major opcode. | |
4173 | [3]: Sub-opcode. | |
4174 | [4]: Syntax (flags). | |
4175 | [5]+ Name instruction. | |
4176 | ||
4177 | The sequence is terminated by an empty entry. */ | |
4178 | ||
4179 | static void | |
4180 | create_extinst_section (extInstruction_t *einsn) | |
4181 | { | |
4182 | ||
4183 | segT old_sec = now_seg; | |
4184 | int old_subsec = now_subseg; | |
4185 | char *p; | |
4186 | int name_len = strlen (einsn->name); | |
4187 | ||
4188 | arc_set_ext_seg (); | |
4189 | ||
4190 | p = frag_more (1); | |
4191 | *p = 5 + name_len + 1; | |
4192 | p = frag_more (1); | |
4193 | *p = EXT_INSTRUCTION; | |
4194 | p = frag_more (1); | |
4195 | *p = einsn->major; | |
4196 | p = frag_more (1); | |
4197 | *p = einsn->minor; | |
4198 | p = frag_more (1); | |
4199 | *p = einsn->flags; | |
4200 | p = frag_more (name_len + 1); | |
4201 | strcpy (p, einsn->name); | |
4202 | ||
4203 | subseg_set (old_sec, old_subsec); | |
4204 | } | |
4205 | ||
4206 | /* Handler .extinstruction pseudo-op. */ | |
4207 | ||
4208 | static void | |
4209 | arc_extinsn (int ignore ATTRIBUTE_UNUSED) | |
4210 | { | |
4211 | extInstruction_t einsn; | |
4212 | struct arc_opcode *arc_ext_opcodes; | |
4213 | const char *errmsg = NULL; | |
4214 | unsigned char moplow, mophigh; | |
4215 | ||
4216 | memset (&einsn, 0, sizeof (einsn)); | |
4217 | tokenize_extinsn (&einsn); | |
4218 | ||
4219 | /* Check if the name is already used. */ | |
4220 | if (arc_find_opcode (einsn.name)) | |
4221 | as_warn (_("Pseudocode already used %s"), einsn.name); | |
4222 | ||
4223 | /* Check the opcode ranges. */ | |
4224 | moplow = 0x05; | |
4225 | mophigh = (arc_target & (ARC_OPCODE_ARCv2EM | |
4226 | | ARC_OPCODE_ARCv2HS)) ? 0x07 : 0x0a; | |
4227 | ||
4228 | if ((einsn.major > mophigh) || (einsn.major < moplow)) | |
4229 | as_fatal (_("major opcode not in range [0x%02x - 0x%02x]"), moplow, mophigh); | |
4230 | ||
4231 | if ((einsn.minor > 0x3f) && (einsn.major != 0x0a) | |
4232 | && (einsn.major != 5) && (einsn.major != 9)) | |
4233 | as_fatal (_("minor opcode not in range [0x00 - 0x3f]")); | |
4234 | ||
945e0f82 | 4235 | switch (einsn.syntax & ARC_SYNTAX_MASK) |
b99747ae CZ |
4236 | { |
4237 | case ARC_SYNTAX_3OP: | |
4238 | if (einsn.modsyn & ARC_OP1_IMM_IMPLIED) | |
4239 | as_fatal (_("Improper use of OP1_IMM_IMPLIED")); | |
4240 | break; | |
4241 | case ARC_SYNTAX_2OP: | |
945e0f82 CZ |
4242 | case ARC_SYNTAX_1OP: |
4243 | case ARC_SYNTAX_NOP: | |
b99747ae CZ |
4244 | if (einsn.modsyn & ARC_OP1_MUST_BE_IMM) |
4245 | as_fatal (_("Improper use of OP1_MUST_BE_IMM")); | |
4246 | break; | |
4247 | default: | |
4248 | break; | |
4249 | } | |
4250 | ||
4251 | arc_ext_opcodes = arcExtMap_genOpcode (&einsn, arc_target, &errmsg); | |
4252 | if (arc_ext_opcodes == NULL) | |
4253 | { | |
4254 | if (errmsg) | |
4255 | as_fatal ("%s", errmsg); | |
4256 | else | |
4257 | as_fatal (_("Couldn't generate extension instruction opcodes")); | |
4258 | } | |
4259 | else if (errmsg) | |
4260 | as_warn ("%s", errmsg); | |
4261 | ||
4262 | /* Insert the extension instruction. */ | |
4263 | arc_insert_opcode ((const struct arc_opcode *) arc_ext_opcodes); | |
4264 | ||
4265 | create_extinst_section (&einsn); | |
4266 | } | |
4267 | ||
f36e33da CZ |
4268 | static void |
4269 | tokenize_extregister (extRegister_t *ereg, int opertype) | |
4270 | { | |
4271 | char *name; | |
4272 | char *mode; | |
4273 | char c; | |
4274 | char *p; | |
4275 | int number, imode = 0; | |
4276 | bfd_boolean isCore_p = (opertype == EXT_CORE_REGISTER) ? TRUE : FALSE; | |
4277 | bfd_boolean isReg_p = (opertype == EXT_CORE_REGISTER | |
4278 | || opertype == EXT_AUX_REGISTER) ? TRUE : FALSE; | |
4279 | ||
4280 | /* 1st: get register name. */ | |
4281 | SKIP_WHITESPACE (); | |
4282 | p = input_line_pointer; | |
4283 | c = get_symbol_name (&p); | |
4284 | ||
4285 | name = xstrdup (p); | |
4286 | restore_line_pointer (c); | |
4287 | ||
4288 | /* 2nd: get register number. */ | |
4289 | SKIP_WHITESPACE (); | |
4290 | ||
4291 | if (*input_line_pointer != ',') | |
4292 | { | |
4293 | as_bad (_("expected comma after register name")); | |
4294 | ignore_rest_of_line (); | |
4295 | free (name); | |
4296 | return; | |
4297 | } | |
4298 | input_line_pointer++; | |
4299 | number = get_absolute_expression (); | |
4300 | ||
4301 | if (number < 0) | |
4302 | { | |
4303 | as_bad (_("negative operand number %d"), number); | |
4304 | ignore_rest_of_line (); | |
4305 | free (name); | |
4306 | return; | |
4307 | } | |
4308 | ||
4309 | if (isReg_p) | |
4310 | { | |
4311 | /* 3rd: get register mode. */ | |
4312 | SKIP_WHITESPACE (); | |
4313 | ||
4314 | if (*input_line_pointer != ',') | |
4315 | { | |
4316 | as_bad (_("expected comma after register number")); | |
4317 | ignore_rest_of_line (); | |
4318 | free (name); | |
4319 | return; | |
4320 | } | |
4321 | ||
4322 | input_line_pointer++; | |
4323 | mode = input_line_pointer; | |
4324 | ||
4325 | if (!strncmp (mode, "r|w", 3)) | |
4326 | { | |
4327 | imode = 0; | |
4328 | input_line_pointer += 3; | |
4329 | } | |
4330 | else if (!strncmp (mode, "r", 1)) | |
4331 | { | |
4332 | imode = ARC_REGISTER_READONLY; | |
4333 | input_line_pointer += 1; | |
4334 | } | |
4335 | else if (strncmp (mode, "w", 1)) | |
4336 | { | |
4337 | as_bad (_("invalid mode")); | |
4338 | ignore_rest_of_line (); | |
4339 | free (name); | |
4340 | return; | |
4341 | } | |
4342 | else | |
4343 | { | |
4344 | imode = ARC_REGISTER_WRITEONLY; | |
4345 | input_line_pointer += 1; | |
4346 | } | |
4347 | } | |
4348 | ||
4349 | if (isCore_p) | |
4350 | { | |
4351 | /* 4th: get core register shortcut. */ | |
4352 | SKIP_WHITESPACE (); | |
4353 | if (*input_line_pointer != ',') | |
4354 | { | |
4355 | as_bad (_("expected comma after register mode")); | |
4356 | ignore_rest_of_line (); | |
4357 | free (name); | |
4358 | return; | |
4359 | } | |
4360 | ||
4361 | input_line_pointer++; | |
4362 | ||
4363 | if (!strncmp (input_line_pointer, "cannot_shortcut", 15)) | |
4364 | { | |
4365 | imode |= ARC_REGISTER_NOSHORT_CUT; | |
4366 | input_line_pointer += 15; | |
4367 | } | |
4368 | else if (strncmp (input_line_pointer, "can_shortcut", 12)) | |
4369 | { | |
4370 | as_bad (_("shortcut designator invalid")); | |
4371 | ignore_rest_of_line (); | |
4372 | free (name); | |
4373 | return; | |
4374 | } | |
4375 | else | |
4376 | { | |
4377 | input_line_pointer += 12; | |
4378 | } | |
4379 | } | |
4380 | demand_empty_rest_of_line (); | |
4381 | ||
4382 | ereg->name = name; | |
4383 | ereg->number = number; | |
4384 | ereg->imode = imode; | |
4385 | } | |
4386 | ||
4387 | /* Create an extension register/condition description in the arc | |
4388 | extension section of the output file. | |
4389 | ||
4390 | The structure for an instruction is like this: | |
4391 | [0]: Length of the record. | |
4392 | [1]: Type of the record. | |
4393 | ||
4394 | For core regs and condition codes: | |
4395 | [2]: Value. | |
4396 | [3]+ Name. | |
4397 | ||
4398 | For auxilirary registers: | |
4399 | [2..5]: Value. | |
4400 | [6]+ Name | |
4401 | ||
4402 | The sequence is terminated by an empty entry. */ | |
4403 | ||
4404 | static void | |
4405 | create_extcore_section (extRegister_t *ereg, int opertype) | |
4406 | { | |
4407 | segT old_sec = now_seg; | |
4408 | int old_subsec = now_subseg; | |
4409 | char *p; | |
4410 | int name_len = strlen (ereg->name); | |
4411 | ||
4412 | arc_set_ext_seg (); | |
4413 | ||
4414 | switch (opertype) | |
4415 | { | |
4416 | case EXT_COND_CODE: | |
4417 | case EXT_CORE_REGISTER: | |
4418 | p = frag_more (1); | |
4419 | *p = 3 + name_len + 1; | |
4420 | p = frag_more (1); | |
4421 | *p = opertype; | |
4422 | p = frag_more (1); | |
4423 | *p = ereg->number; | |
4424 | break; | |
4425 | case EXT_AUX_REGISTER: | |
4426 | p = frag_more (1); | |
4427 | *p = 6 + name_len + 1; | |
4428 | p = frag_more (1); | |
4429 | *p = EXT_AUX_REGISTER; | |
4430 | p = frag_more (1); | |
4431 | *p = (ereg->number >> 24) & 0xff; | |
4432 | p = frag_more (1); | |
4433 | *p = (ereg->number >> 16) & 0xff; | |
4434 | p = frag_more (1); | |
4435 | *p = (ereg->number >> 8) & 0xff; | |
4436 | p = frag_more (1); | |
4437 | *p = (ereg->number) & 0xff; | |
4438 | break; | |
4439 | default: | |
4440 | break; | |
4441 | } | |
4442 | ||
4443 | p = frag_more (name_len + 1); | |
4444 | strcpy (p, ereg->name); | |
4445 | ||
4446 | subseg_set (old_sec, old_subsec); | |
4447 | } | |
4448 | ||
4449 | /* Handler .extCoreRegister pseudo-op. */ | |
4450 | ||
4451 | static void | |
4452 | arc_extcorereg (int opertype) | |
4453 | { | |
4454 | extRegister_t ereg; | |
4455 | struct arc_aux_reg *auxr; | |
4456 | const char *retval; | |
4457 | struct arc_flag_operand *ccode; | |
4458 | ||
4459 | memset (&ereg, 0, sizeof (ereg)); | |
4460 | tokenize_extregister (&ereg, opertype); | |
4461 | ||
4462 | switch (opertype) | |
4463 | { | |
4464 | case EXT_CORE_REGISTER: | |
4465 | /* Core register. */ | |
4466 | if (ereg.number > 60) | |
4467 | as_bad (_("core register %s value (%d) too large"), ereg.name, | |
4468 | ereg.number); | |
4469 | declare_register (ereg.name, ereg.number); | |
4470 | break; | |
4471 | case EXT_AUX_REGISTER: | |
4472 | /* Auxiliary register. */ | |
add39d23 | 4473 | auxr = XNEW (struct arc_aux_reg); |
f36e33da CZ |
4474 | auxr->name = ereg.name; |
4475 | auxr->cpu = arc_target; | |
4476 | auxr->subclass = NONE; | |
4477 | auxr->address = ereg.number; | |
4478 | retval = hash_insert (arc_aux_hash, auxr->name, (void *) auxr); | |
4479 | if (retval) | |
4480 | as_fatal (_("internal error: can't hash aux register '%s': %s"), | |
4481 | auxr->name, retval); | |
4482 | break; | |
4483 | case EXT_COND_CODE: | |
4484 | /* Condition code. */ | |
4485 | if (ereg.number > 31) | |
4486 | as_bad (_("condition code %s value (%d) too large"), ereg.name, | |
4487 | ereg.number); | |
4488 | ext_condcode.size ++; | |
4489 | ext_condcode.arc_ext_condcode = | |
add39d23 TS |
4490 | XRESIZEVEC (struct arc_flag_operand, ext_condcode.arc_ext_condcode, |
4491 | ext_condcode.size + 1); | |
f36e33da CZ |
4492 | if (ext_condcode.arc_ext_condcode == NULL) |
4493 | as_fatal (_("Virtual memory exhausted")); | |
4494 | ||
4495 | ccode = ext_condcode.arc_ext_condcode + ext_condcode.size - 1; | |
4496 | ccode->name = ereg.name; | |
4497 | ccode->code = ereg.number; | |
4498 | ccode->bits = 5; | |
4499 | ccode->shift = 0; | |
4500 | ccode->favail = 0; /* not used. */ | |
4501 | ccode++; | |
4502 | memset (ccode, 0, sizeof (struct arc_flag_operand)); | |
4503 | break; | |
4504 | default: | |
4505 | as_bad (_("Unknown extension")); | |
4506 | break; | |
4507 | } | |
4508 | create_extcore_section (&ereg, opertype); | |
4509 | } | |
4510 | ||
b99747ae CZ |
4511 | /* Local variables: |
4512 | eval: (c-set-style "gnu") | |
4513 | indent-tabs-mode: t | |
4514 | End: */ |