Commit | Line | Data |
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252b5132 | 1 | /* tc-arm.c -- Assemble for the ARM |
f7e42eb4 | 2 | Copyright 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001 |
28e4f854 | 3 | Free Software Foundation, Inc. |
252b5132 RH |
4 | Contributed by Richard Earnshaw (rwe@pegasus.esprit.ec.org) |
5 | Modified by David Taylor (dtaylor@armltd.co.uk) | |
6 | ||
7 | This file is part of GAS, the GNU Assembler. | |
8 | ||
9 | GAS is free software; you can redistribute it and/or modify | |
10 | it under the terms of the GNU General Public License as published by | |
11 | the Free Software Foundation; either version 2, or (at your option) | |
12 | any later version. | |
13 | ||
14 | GAS is distributed in the hope that it will be useful, | |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
18 | ||
19 | You should have received a copy of the GNU General Public License | |
20 | along with GAS; see the file COPYING. If not, write to the Free | |
21 | Software Foundation, 59 Temple Place - Suite 330, Boston, MA | |
22 | 02111-1307, USA. */ | |
23 | ||
24 | #include <ctype.h> | |
25 | #include <string.h> | |
26 | #define NO_RELOC 0 | |
27 | #include "as.h" | |
28 | ||
28e4f854 | 29 | /* Need TARGET_CPU. */ |
252b5132 RH |
30 | #include "config.h" |
31 | #include "subsegs.h" | |
32 | #include "obstack.h" | |
33 | #include "symbols.h" | |
34 | #include "listing.h" | |
35 | ||
36 | #ifdef OBJ_ELF | |
37 | #include "elf/arm.h" | |
8d6b5c8e | 38 | #include "dwarf2dbg.h" |
252b5132 RH |
39 | #endif |
40 | ||
41 | /* Types of processor to assemble for. */ | |
42 | #define ARM_1 0x00000001 | |
43 | #define ARM_2 0x00000002 | |
44 | #define ARM_3 0x00000004 | |
45 | #define ARM_250 ARM_3 | |
46 | #define ARM_6 0x00000008 | |
28e4f854 KH |
47 | #define ARM_7 ARM_6 /* Same core instruction set. */ |
48 | #define ARM_8 ARM_6 /* Same core instruction set. */ | |
49 | #define ARM_9 ARM_6 /* Same core instruction set. */ | |
252b5132 RH |
50 | #define ARM_CPU_MASK 0x0000000f |
51 | ||
28e4f854 | 52 | /* The following bitmasks control CPU extensions (ARM7 onwards): */ |
077b8428 NC |
53 | #define ARM_EXT_LONGMUL 0x00000010 /* Allow long multiplies. */ |
54 | #define ARM_EXT_HALFWORD 0x00000020 /* Allow half word loads. */ | |
55 | #define ARM_EXT_THUMB 0x00000040 /* Allow BX instruction. */ | |
28e4f854 | 56 | #define ARM_EXT_V5 0x00000080 /* Allow CLZ, etc. */ |
077b8428 NC |
57 | #define ARM_EXT_V5E 0x00000100 /* "El Segundo". */ |
58 | #define ARM_EXT_XSCALE 0x00000200 /* Allow MIA etc. */ | |
252b5132 | 59 | |
056350c6 | 60 | /* Architectures are the sum of the base and extensions. */ |
077b8428 NC |
61 | #define ARM_ARCH_V3M ARM_EXT_LONGMUL |
62 | #define ARM_ARCH_V4 (ARM_ARCH_V3M | ARM_EXT_HALFWORD) | |
63 | #define ARM_ARCH_V4T (ARM_ARCH_V4 | ARM_EXT_THUMB) | |
858f4ff6 | 64 | #define ARM_ARCH_V5 (ARM_ARCH_V4 | ARM_EXT_V5) |
077b8428 NC |
65 | #define ARM_ARCH_V5T (ARM_ARCH_V5 | ARM_EXT_THUMB) |
66 | #define ARM_ARCH_V5TE (ARM_ARCH_V5T | ARM_EXT_V5E) | |
67 | #define ARM_ARCH_XSCALE (ARM_ARCH_V5TE | ARM_EXT_XSCALE) | |
252b5132 RH |
68 | |
69 | /* Some useful combinations: */ | |
70 | #define ARM_ANY 0x00ffffff | |
49a5575c | 71 | #define ARM_2UP (ARM_ANY - ARM_1) |
28e4f854 | 72 | #define ARM_ALL ARM_2UP /* Not arm1 only. */ |
252b5132 | 73 | #define ARM_3UP 0x00fffffc |
28e4f854 | 74 | #define ARM_6UP 0x00fffff8 /* Includes ARM7. */ |
252b5132 RH |
75 | |
76 | #define FPU_CORE 0x80000000 | |
77 | #define FPU_FPA10 0x40000000 | |
78 | #define FPU_FPA11 0x40000000 | |
79 | #define FPU_NONE 0 | |
80 | ||
28e4f854 KH |
81 | /* Some useful combinations. */ |
82 | #define FPU_ALL 0xff000000 /* Note this is ~ARM_ANY. */ | |
83 | #define FPU_MEMMULTI 0x7f000000 /* Not fpu_core. */ | |
252b5132 | 84 | |
252b5132 | 85 | #ifndef CPU_DEFAULT |
077b8428 NC |
86 | #if defined __XSCALE__ |
87 | #define CPU_DEFAULT (ARM_9 | ARM_ARCH_XSCALE) | |
88 | #else | |
252b5132 | 89 | #if defined __thumb__ |
077b8428 | 90 | #define CPU_DEFAULT (ARM_7 | ARM_ARCH_V4T) |
252b5132 | 91 | #else |
077b8428 NC |
92 | #define CPU_DEFAULT ARM_ALL |
93 | #endif | |
252b5132 RH |
94 | #endif |
95 | #endif | |
96 | ||
97 | #ifndef FPU_DEFAULT | |
98 | #define FPU_DEFAULT FPU_ALL | |
99 | #endif | |
100 | ||
ae5ad4ad | 101 | #define streq(a, b) (strcmp (a, b) == 0) |
28e4f854 | 102 | #define skip_whitespace(str) while (*(str) == ' ') ++(str) |
252b5132 | 103 | |
28e4f854 | 104 | static unsigned long cpu_variant = CPU_DEFAULT | FPU_DEFAULT; |
252b5132 RH |
105 | static int target_oabi = 0; |
106 | ||
107 | #if defined OBJ_COFF || defined OBJ_ELF | |
28e4f854 KH |
108 | /* Flags stored in private area of BFD structure. */ |
109 | static boolean uses_apcs_26 = false; | |
077b8428 | 110 | static boolean atpcs = false; |
28e4f854 KH |
111 | static boolean support_interwork = false; |
112 | static boolean uses_apcs_float = false; | |
113 | static boolean pic_code = false; | |
252b5132 RH |
114 | #endif |
115 | ||
116 | /* This array holds the chars that always start a comment. If the | |
ec9991dc | 117 | pre-processor is disabled, these aren't very useful. */ |
252b5132 RH |
118 | CONST char comment_chars[] = "@"; |
119 | ||
120 | /* This array holds the chars that only start a comment at the beginning of | |
121 | a line. If the line seems to have the form '# 123 filename' | |
ec9991dc | 122 | .line and .file directives will appear in the pre-processed output. */ |
252b5132 RH |
123 | /* Note that input_file.c hand checks for '#' at the beginning of the |
124 | first line of the input file. This is because the compiler outputs | |
ec9991dc NC |
125 | #NO_APP at the beginning of its output. */ |
126 | /* Also note that comments like this one will always work. */ | |
252b5132 RH |
127 | CONST char line_comment_chars[] = "#"; |
128 | ||
252b5132 | 129 | CONST char line_separator_chars[] = ";"; |
252b5132 | 130 | |
ec9991dc NC |
131 | /* Chars that can be used to separate mant |
132 | from exp in floating point numbers. */ | |
252b5132 RH |
133 | CONST char EXP_CHARS[] = "eE"; |
134 | ||
28e4f854 KH |
135 | /* Chars that mean this number is a floating point constant. */ |
136 | /* As in 0f12.456 */ | |
137 | /* or 0d1.2345e12 */ | |
252b5132 RH |
138 | |
139 | CONST char FLT_CHARS[] = "rRsSfFdDxXeEpP"; | |
140 | ||
141 | /* Prefix characters that indicate the start of an immediate | |
142 | value. */ | |
143 | #define is_immediate_prefix(C) ((C) == '#' || (C) == '$') | |
144 | ||
145 | #ifdef OBJ_ELF | |
28e4f854 | 146 | /* Pre-defined "_GLOBAL_OFFSET_TABLE_" */ |
d78c7dca | 147 | symbolS * GOT_symbol; |
252b5132 RH |
148 | #endif |
149 | ||
28e4f854 KH |
150 | /* Size of relocation record. */ |
151 | CONST int md_reloc_size = 8; | |
152 | ||
153 | /* 0: assemble for ARM, | |
154 | 1: assemble for Thumb, | |
155 | 2: assemble for Thumb even though target CPU does not support thumb | |
156 | instructions. */ | |
157 | static int thumb_mode = 0; | |
252b5132 RH |
158 | |
159 | typedef struct arm_fix | |
160 | { | |
161 | int thumb_mode; | |
162 | } arm_fix_data; | |
163 | ||
164 | struct arm_it | |
165 | { | |
d78c7dca | 166 | CONST char * error; |
252b5132 | 167 | unsigned long instruction; |
d78c7dca NC |
168 | int suffix; |
169 | int size; | |
252b5132 | 170 | struct |
28e4f854 KH |
171 | { |
172 | bfd_reloc_code_real_type type; | |
d78c7dca NC |
173 | expressionS exp; |
174 | int pc_rel; | |
28e4f854 | 175 | } reloc; |
252b5132 RH |
176 | }; |
177 | ||
178 | struct arm_it inst; | |
179 | ||
8cb8bcba | 180 | enum asm_shift_index |
252b5132 | 181 | { |
8cb8bcba NC |
182 | SHIFT_LSL = 0, |
183 | SHIFT_LSR, | |
184 | SHIFT_ASR, | |
185 | SHIFT_ROR, | |
186 | SHIFT_RRX | |
187 | }; | |
188 | ||
189 | struct asm_shift_properties | |
190 | { | |
191 | enum asm_shift_index index; | |
192 | unsigned long bit_field; | |
193 | unsigned int allows_0 : 1; | |
194 | unsigned int allows_32 : 1; | |
252b5132 RH |
195 | }; |
196 | ||
8cb8bcba NC |
197 | static const struct asm_shift_properties shift_properties [] = |
198 | { | |
199 | { SHIFT_LSL, 0, 1, 0}, | |
200 | { SHIFT_LSR, 0x20, 0, 1}, | |
201 | { SHIFT_ASR, 0x40, 0, 1}, | |
202 | { SHIFT_ROR, 0x60, 0, 0}, | |
203 | { SHIFT_RRX, 0x60, 0, 0} | |
204 | }; | |
205 | ||
206 | struct asm_shift_name | |
207 | { | |
208 | const char * name; | |
209 | const struct asm_shift_properties * properties; | |
252b5132 RH |
210 | }; |
211 | ||
8cb8bcba NC |
212 | static const struct asm_shift_name shift_names [] = |
213 | { | |
214 | { "asl", shift_properties + SHIFT_LSL }, | |
215 | { "lsl", shift_properties + SHIFT_LSL }, | |
216 | { "lsr", shift_properties + SHIFT_LSR }, | |
217 | { "asr", shift_properties + SHIFT_ASR }, | |
218 | { "ror", shift_properties + SHIFT_ROR }, | |
219 | { "rrx", shift_properties + SHIFT_RRX }, | |
220 | { "ASL", shift_properties + SHIFT_LSL }, | |
221 | { "LSL", shift_properties + SHIFT_LSL }, | |
222 | { "LSR", shift_properties + SHIFT_LSR }, | |
223 | { "ASR", shift_properties + SHIFT_ASR }, | |
224 | { "ROR", shift_properties + SHIFT_ROR }, | |
225 | { "RRX", shift_properties + SHIFT_RRX } | |
226 | }; | |
004af544 | 227 | |
252b5132 RH |
228 | #define NO_SHIFT_RESTRICT 1 |
229 | #define SHIFT_RESTRICT 0 | |
230 | ||
231 | #define NUM_FLOAT_VALS 8 | |
232 | ||
d78c7dca | 233 | CONST char * fp_const[] = |
252b5132 RH |
234 | { |
235 | "0.0", "1.0", "2.0", "3.0", "4.0", "5.0", "0.5", "10.0", 0 | |
236 | }; | |
237 | ||
ec9991dc | 238 | /* Number of littlenums required to hold an extended precision number. */ |
252b5132 RH |
239 | #define MAX_LITTLENUMS 6 |
240 | ||
241 | LITTLENUM_TYPE fp_values[NUM_FLOAT_VALS][MAX_LITTLENUMS]; | |
242 | ||
243 | #define FAIL (-1) | |
244 | #define SUCCESS (0) | |
245 | ||
246 | #define SUFF_S 1 | |
247 | #define SUFF_D 2 | |
248 | #define SUFF_E 3 | |
249 | #define SUFF_P 4 | |
250 | ||
251 | #define CP_T_X 0x00008000 | |
252 | #define CP_T_Y 0x00400000 | |
253 | #define CP_T_Pre 0x01000000 | |
254 | #define CP_T_UD 0x00800000 | |
255 | #define CP_T_WB 0x00200000 | |
256 | ||
077b8428 NC |
257 | #define CONDS_BIT 0x00100000 |
258 | #define LOAD_BIT 0x00100000 | |
259 | #define TRANS_BIT 0x00200000 | |
260 | ||
261 | #define DOUBLE_LOAD_FLAG 0x00000001 | |
252b5132 RH |
262 | |
263 | struct asm_cond | |
264 | { | |
d78c7dca | 265 | CONST char * template; |
252b5132 RH |
266 | unsigned long value; |
267 | }; | |
268 | ||
ec9991dc | 269 | /* This is to save a hash look-up in the common case. */ |
252b5132 RH |
270 | #define COND_ALWAYS 0xe0000000 |
271 | ||
28e4f854 | 272 | static CONST struct asm_cond conds[] = |
252b5132 RH |
273 | { |
274 | {"eq", 0x00000000}, | |
275 | {"ne", 0x10000000}, | |
276 | {"cs", 0x20000000}, {"hs", 0x20000000}, | |
277 | {"cc", 0x30000000}, {"ul", 0x30000000}, {"lo", 0x30000000}, | |
278 | {"mi", 0x40000000}, | |
279 | {"pl", 0x50000000}, | |
280 | {"vs", 0x60000000}, | |
281 | {"vc", 0x70000000}, | |
282 | {"hi", 0x80000000}, | |
283 | {"ls", 0x90000000}, | |
284 | {"ge", 0xa0000000}, | |
285 | {"lt", 0xb0000000}, | |
286 | {"gt", 0xc0000000}, | |
287 | {"le", 0xd0000000}, | |
288 | {"al", 0xe0000000}, | |
289 | {"nv", 0xf0000000} | |
290 | }; | |
291 | ||
292 | /* Warning: If the top bit of the set_bits is set, then the standard | |
293 | instruction bitmask is ignored, and the new bitmask is taken from | |
ec9991dc | 294 | the set_bits: */ |
252b5132 RH |
295 | struct asm_flg |
296 | { | |
d78c7dca NC |
297 | CONST char * template; /* Basic flag string. */ |
298 | unsigned long set_bits; /* Bits to set. */ | |
252b5132 RH |
299 | }; |
300 | ||
301 | static CONST struct asm_flg s_flag[] = | |
302 | { | |
303 | {"s", CONDS_BIT}, | |
304 | {NULL, 0} | |
305 | }; | |
306 | ||
307 | static CONST struct asm_flg ldr_flags[] = | |
308 | { | |
077b8428 | 309 | {"d", DOUBLE_LOAD_FLAG}, |
252b5132 RH |
310 | {"b", 0x00400000}, |
311 | {"t", TRANS_BIT}, | |
312 | {"bt", 0x00400000 | TRANS_BIT}, | |
313 | {"h", 0x801000b0}, | |
314 | {"sh", 0x801000f0}, | |
315 | {"sb", 0x801000d0}, | |
316 | {NULL, 0} | |
317 | }; | |
318 | ||
319 | static CONST struct asm_flg str_flags[] = | |
320 | { | |
077b8428 | 321 | {"d", DOUBLE_LOAD_FLAG}, |
252b5132 RH |
322 | {"b", 0x00400000}, |
323 | {"t", TRANS_BIT}, | |
324 | {"bt", 0x00400000 | TRANS_BIT}, | |
325 | {"h", 0x800000b0}, | |
326 | {NULL, 0} | |
327 | }; | |
328 | ||
329 | static CONST struct asm_flg byte_flag[] = | |
330 | { | |
331 | {"b", 0x00400000}, | |
332 | {NULL, 0} | |
333 | }; | |
334 | ||
335 | static CONST struct asm_flg cmp_flags[] = | |
336 | { | |
337 | {"s", CONDS_BIT}, | |
338 | {"p", 0x0010f000}, | |
339 | {NULL, 0} | |
340 | }; | |
341 | ||
342 | static CONST struct asm_flg ldm_flags[] = | |
343 | { | |
344 | {"ed", 0x01800000}, | |
345 | {"fd", 0x00800000}, | |
346 | {"ea", 0x01000000}, | |
cd17328a | 347 | {"fa", 0x00000000}, |
252b5132 RH |
348 | {"ib", 0x01800000}, |
349 | {"ia", 0x00800000}, | |
350 | {"db", 0x01000000}, | |
cd17328a | 351 | {"da", 0x00000000}, |
252b5132 RH |
352 | {NULL, 0} |
353 | }; | |
354 | ||
355 | static CONST struct asm_flg stm_flags[] = | |
356 | { | |
cd17328a | 357 | {"ed", 0x00000000}, |
252b5132 RH |
358 | {"fd", 0x01000000}, |
359 | {"ea", 0x00800000}, | |
360 | {"fa", 0x01800000}, | |
361 | {"ib", 0x01800000}, | |
362 | {"ia", 0x00800000}, | |
363 | {"db", 0x01000000}, | |
cd17328a | 364 | {"da", 0x00000000}, |
252b5132 RH |
365 | {NULL, 0} |
366 | }; | |
367 | ||
368 | static CONST struct asm_flg lfm_flags[] = | |
369 | { | |
370 | {"fd", 0x00800000}, | |
371 | {"ea", 0x01000000}, | |
372 | {NULL, 0} | |
373 | }; | |
374 | ||
375 | static CONST struct asm_flg sfm_flags[] = | |
376 | { | |
377 | {"fd", 0x01000000}, | |
378 | {"ea", 0x00800000}, | |
379 | {NULL, 0} | |
380 | }; | |
381 | ||
382 | static CONST struct asm_flg round_flags[] = | |
383 | { | |
384 | {"p", 0x00000020}, | |
385 | {"m", 0x00000040}, | |
386 | {"z", 0x00000060}, | |
387 | {NULL, 0} | |
388 | }; | |
389 | ||
390 | /* The implementation of the FIX instruction is broken on some assemblers, | |
391 | in that it accepts a precision specifier as well as a rounding specifier, | |
392 | despite the fact that this is meaningless. To be more compatible, we | |
393 | accept it as well, though of course it does not set any bits. */ | |
394 | static CONST struct asm_flg fix_flags[] = | |
395 | { | |
396 | {"p", 0x00000020}, | |
397 | {"m", 0x00000040}, | |
398 | {"z", 0x00000060}, | |
399 | {"sp", 0x00000020}, | |
400 | {"sm", 0x00000040}, | |
401 | {"sz", 0x00000060}, | |
402 | {"dp", 0x00000020}, | |
403 | {"dm", 0x00000040}, | |
404 | {"dz", 0x00000060}, | |
405 | {"ep", 0x00000020}, | |
406 | {"em", 0x00000040}, | |
407 | {"ez", 0x00000060}, | |
408 | {NULL, 0} | |
409 | }; | |
410 | ||
411 | static CONST struct asm_flg except_flag[] = | |
412 | { | |
413 | {"e", 0x00400000}, | |
414 | {NULL, 0} | |
415 | }; | |
416 | ||
417 | static CONST struct asm_flg cplong_flag[] = | |
418 | { | |
419 | {"l", 0x00400000}, | |
420 | {NULL, 0} | |
421 | }; | |
422 | ||
423 | struct asm_psr | |
424 | { | |
d78c7dca NC |
425 | CONST char * template; |
426 | boolean cpsr; | |
322f2c45 | 427 | unsigned long field; |
252b5132 RH |
428 | }; |
429 | ||
28e4f854 KH |
430 | /* The bit that distnguishes CPSR and SPSR. */ |
431 | #define SPSR_BIT (1 << 22) | |
432 | ||
433 | /* How many bits to shift the PSR_xxx bits up by. */ | |
434 | #define PSR_SHIFT 16 | |
252b5132 | 435 | |
322f2c45 NC |
436 | #define PSR_c (1 << 0) |
437 | #define PSR_x (1 << 1) | |
438 | #define PSR_s (1 << 2) | |
439 | #define PSR_f (1 << 3) | |
252b5132 RH |
440 | |
441 | static CONST struct asm_psr psrs[] = | |
442 | { | |
322f2c45 NC |
443 | {"CPSR", true, PSR_c | PSR_f}, |
444 | {"CPSR_all", true, PSR_c | PSR_f}, | |
445 | {"SPSR", false, PSR_c | PSR_f}, | |
446 | {"SPSR_all", false, PSR_c | PSR_f}, | |
447 | {"CPSR_flg", true, PSR_f}, | |
448 | {"CPSR_f", true, PSR_f}, | |
449 | {"SPSR_flg", false, PSR_f}, | |
28e4f854 | 450 | {"SPSR_f", false, PSR_f}, |
322f2c45 NC |
451 | {"CPSR_c", true, PSR_c}, |
452 | {"CPSR_ctl", true, PSR_c}, | |
453 | {"SPSR_c", false, PSR_c}, | |
454 | {"SPSR_ctl", false, PSR_c}, | |
455 | {"CPSR_x", true, PSR_x}, | |
456 | {"CPSR_s", true, PSR_s}, | |
457 | {"SPSR_x", false, PSR_x}, | |
458 | {"SPSR_s", false, PSR_s}, | |
8de8f17e AO |
459 | /* Combinations of flags. */ |
460 | {"CPSR_fs", true, PSR_f | PSR_s}, | |
461 | {"CPSR_fx", true, PSR_f | PSR_x}, | |
462 | {"CPSR_fc", true, PSR_f | PSR_c}, | |
463 | {"CPSR_sf", true, PSR_s | PSR_f}, | |
464 | {"CPSR_sx", true, PSR_s | PSR_x}, | |
465 | {"CPSR_sc", true, PSR_s | PSR_c}, | |
466 | {"CPSR_xf", true, PSR_x | PSR_f}, | |
467 | {"CPSR_xs", true, PSR_x | PSR_s}, | |
468 | {"CPSR_xc", true, PSR_x | PSR_c}, | |
469 | {"CPSR_cf", true, PSR_c | PSR_f}, | |
470 | {"CPSR_cs", true, PSR_c | PSR_s}, | |
471 | {"CPSR_cx", true, PSR_c | PSR_x}, | |
472 | {"CPSR_fsx", true, PSR_f | PSR_s | PSR_x}, | |
473 | {"CPSR_fsc", true, PSR_f | PSR_s | PSR_c}, | |
474 | {"CPSR_fxs", true, PSR_f | PSR_x | PSR_s}, | |
475 | {"CPSR_fxc", true, PSR_f | PSR_x | PSR_c}, | |
476 | {"CPSR_fcs", true, PSR_f | PSR_c | PSR_s}, | |
477 | {"CPSR_fcx", true, PSR_f | PSR_c | PSR_x}, | |
478 | {"CPSR_sfx", true, PSR_s | PSR_f | PSR_x}, | |
479 | {"CPSR_sfc", true, PSR_s | PSR_f | PSR_c}, | |
480 | {"CPSR_sxf", true, PSR_s | PSR_x | PSR_f}, | |
481 | {"CPSR_sxc", true, PSR_s | PSR_x | PSR_c}, | |
482 | {"CPSR_scf", true, PSR_s | PSR_c | PSR_f}, | |
483 | {"CPSR_scx", true, PSR_s | PSR_c | PSR_x}, | |
484 | {"CPSR_xfs", true, PSR_x | PSR_f | PSR_s}, | |
485 | {"CPSR_xfc", true, PSR_x | PSR_f | PSR_c}, | |
486 | {"CPSR_xsf", true, PSR_x | PSR_s | PSR_f}, | |
487 | {"CPSR_xsc", true, PSR_x | PSR_s | PSR_c}, | |
488 | {"CPSR_xcf", true, PSR_x | PSR_c | PSR_f}, | |
489 | {"CPSR_xcs", true, PSR_x | PSR_c | PSR_s}, | |
490 | {"CPSR_cfs", true, PSR_c | PSR_f | PSR_s}, | |
491 | {"CPSR_cfx", true, PSR_c | PSR_f | PSR_x}, | |
492 | {"CPSR_csf", true, PSR_c | PSR_s | PSR_f}, | |
493 | {"CPSR_csx", true, PSR_c | PSR_s | PSR_x}, | |
494 | {"CPSR_cxf", true, PSR_c | PSR_x | PSR_f}, | |
495 | {"CPSR_cxs", true, PSR_c | PSR_x | PSR_s}, | |
496 | {"CPSR_fsxc", true, PSR_f | PSR_s | PSR_x | PSR_c}, | |
497 | {"CPSR_fscx", true, PSR_f | PSR_s | PSR_c | PSR_x}, | |
498 | {"CPSR_fxsc", true, PSR_f | PSR_x | PSR_s | PSR_c}, | |
499 | {"CPSR_fxcs", true, PSR_f | PSR_x | PSR_c | PSR_s}, | |
500 | {"CPSR_fcsx", true, PSR_f | PSR_c | PSR_s | PSR_x}, | |
501 | {"CPSR_fcxs", true, PSR_f | PSR_c | PSR_x | PSR_s}, | |
502 | {"CPSR_sfxc", true, PSR_s | PSR_f | PSR_x | PSR_c}, | |
503 | {"CPSR_sfcx", true, PSR_s | PSR_f | PSR_c | PSR_x}, | |
504 | {"CPSR_sxfc", true, PSR_s | PSR_x | PSR_f | PSR_c}, | |
505 | {"CPSR_sxcf", true, PSR_s | PSR_x | PSR_c | PSR_f}, | |
506 | {"CPSR_scfx", true, PSR_s | PSR_c | PSR_f | PSR_x}, | |
507 | {"CPSR_scxf", true, PSR_s | PSR_c | PSR_x | PSR_f}, | |
508 | {"CPSR_xfsc", true, PSR_x | PSR_f | PSR_s | PSR_c}, | |
509 | {"CPSR_xfcs", true, PSR_x | PSR_f | PSR_c | PSR_s}, | |
510 | {"CPSR_xsfc", true, PSR_x | PSR_s | PSR_f | PSR_c}, | |
511 | {"CPSR_xscf", true, PSR_x | PSR_s | PSR_c | PSR_f}, | |
512 | {"CPSR_xcfs", true, PSR_x | PSR_c | PSR_f | PSR_s}, | |
513 | {"CPSR_xcsf", true, PSR_x | PSR_c | PSR_s | PSR_f}, | |
514 | {"CPSR_cfsx", true, PSR_c | PSR_f | PSR_s | PSR_x}, | |
515 | {"CPSR_cfxs", true, PSR_c | PSR_f | PSR_x | PSR_s}, | |
516 | {"CPSR_csfx", true, PSR_c | PSR_s | PSR_f | PSR_x}, | |
517 | {"CPSR_csxf", true, PSR_c | PSR_s | PSR_x | PSR_f}, | |
518 | {"CPSR_cxfs", true, PSR_c | PSR_x | PSR_f | PSR_s}, | |
519 | {"CPSR_cxsf", true, PSR_c | PSR_x | PSR_s | PSR_f}, | |
520 | {"SPSR_fs", false, PSR_f | PSR_s}, | |
521 | {"SPSR_fx", false, PSR_f | PSR_x}, | |
522 | {"SPSR_fc", false, PSR_f | PSR_c}, | |
523 | {"SPSR_sf", false, PSR_s | PSR_f}, | |
524 | {"SPSR_sx", false, PSR_s | PSR_x}, | |
525 | {"SPSR_sc", false, PSR_s | PSR_c}, | |
526 | {"SPSR_xf", false, PSR_x | PSR_f}, | |
527 | {"SPSR_xs", false, PSR_x | PSR_s}, | |
528 | {"SPSR_xc", false, PSR_x | PSR_c}, | |
529 | {"SPSR_cf", false, PSR_c | PSR_f}, | |
530 | {"SPSR_cs", false, PSR_c | PSR_s}, | |
531 | {"SPSR_cx", false, PSR_c | PSR_x}, | |
532 | {"SPSR_fsx", false, PSR_f | PSR_s | PSR_x}, | |
533 | {"SPSR_fsc", false, PSR_f | PSR_s | PSR_c}, | |
534 | {"SPSR_fxs", false, PSR_f | PSR_x | PSR_s}, | |
535 | {"SPSR_fxc", false, PSR_f | PSR_x | PSR_c}, | |
536 | {"SPSR_fcs", false, PSR_f | PSR_c | PSR_s}, | |
537 | {"SPSR_fcx", false, PSR_f | PSR_c | PSR_x}, | |
538 | {"SPSR_sfx", false, PSR_s | PSR_f | PSR_x}, | |
539 | {"SPSR_sfc", false, PSR_s | PSR_f | PSR_c}, | |
540 | {"SPSR_sxf", false, PSR_s | PSR_x | PSR_f}, | |
541 | {"SPSR_sxc", false, PSR_s | PSR_x | PSR_c}, | |
542 | {"SPSR_scf", false, PSR_s | PSR_c | PSR_f}, | |
543 | {"SPSR_scx", false, PSR_s | PSR_c | PSR_x}, | |
544 | {"SPSR_xfs", false, PSR_x | PSR_f | PSR_s}, | |
545 | {"SPSR_xfc", false, PSR_x | PSR_f | PSR_c}, | |
546 | {"SPSR_xsf", false, PSR_x | PSR_s | PSR_f}, | |
547 | {"SPSR_xsc", false, PSR_x | PSR_s | PSR_c}, | |
548 | {"SPSR_xcf", false, PSR_x | PSR_c | PSR_f}, | |
549 | {"SPSR_xcs", false, PSR_x | PSR_c | PSR_s}, | |
550 | {"SPSR_cfs", false, PSR_c | PSR_f | PSR_s}, | |
551 | {"SPSR_cfx", false, PSR_c | PSR_f | PSR_x}, | |
552 | {"SPSR_csf", false, PSR_c | PSR_s | PSR_f}, | |
553 | {"SPSR_csx", false, PSR_c | PSR_s | PSR_x}, | |
554 | {"SPSR_cxf", false, PSR_c | PSR_x | PSR_f}, | |
555 | {"SPSR_cxs", false, PSR_c | PSR_x | PSR_s}, | |
556 | {"SPSR_fsxc", false, PSR_f | PSR_s | PSR_x | PSR_c}, | |
557 | {"SPSR_fscx", false, PSR_f | PSR_s | PSR_c | PSR_x}, | |
558 | {"SPSR_fxsc", false, PSR_f | PSR_x | PSR_s | PSR_c}, | |
559 | {"SPSR_fxcs", false, PSR_f | PSR_x | PSR_c | PSR_s}, | |
560 | {"SPSR_fcsx", false, PSR_f | PSR_c | PSR_s | PSR_x}, | |
561 | {"SPSR_fcxs", false, PSR_f | PSR_c | PSR_x | PSR_s}, | |
562 | {"SPSR_sfxc", false, PSR_s | PSR_f | PSR_x | PSR_c}, | |
563 | {"SPSR_sfcx", false, PSR_s | PSR_f | PSR_c | PSR_x}, | |
564 | {"SPSR_sxfc", false, PSR_s | PSR_x | PSR_f | PSR_c}, | |
565 | {"SPSR_sxcf", false, PSR_s | PSR_x | PSR_c | PSR_f}, | |
566 | {"SPSR_scfx", false, PSR_s | PSR_c | PSR_f | PSR_x}, | |
567 | {"SPSR_scxf", false, PSR_s | PSR_c | PSR_x | PSR_f}, | |
568 | {"SPSR_xfsc", false, PSR_x | PSR_f | PSR_s | PSR_c}, | |
569 | {"SPSR_xfcs", false, PSR_x | PSR_f | PSR_c | PSR_s}, | |
570 | {"SPSR_xsfc", false, PSR_x | PSR_s | PSR_f | PSR_c}, | |
571 | {"SPSR_xscf", false, PSR_x | PSR_s | PSR_c | PSR_f}, | |
572 | {"SPSR_xcfs", false, PSR_x | PSR_c | PSR_f | PSR_s}, | |
573 | {"SPSR_xcsf", false, PSR_x | PSR_c | PSR_s | PSR_f}, | |
574 | {"SPSR_cfsx", false, PSR_c | PSR_f | PSR_s | PSR_x}, | |
575 | {"SPSR_cfxs", false, PSR_c | PSR_f | PSR_x | PSR_s}, | |
576 | {"SPSR_csfx", false, PSR_c | PSR_s | PSR_f | PSR_x}, | |
577 | {"SPSR_csxf", false, PSR_c | PSR_s | PSR_x | PSR_f}, | |
578 | {"SPSR_cxfs", false, PSR_c | PSR_x | PSR_f | PSR_s}, | |
579 | {"SPSR_cxsf", false, PSR_c | PSR_x | PSR_s | PSR_f}, | |
252b5132 RH |
580 | }; |
581 | ||
ec9991dc | 582 | /* Functions called by parser. */ |
28e4f854 | 583 | /* ARM instructions. */ |
ae5ad4ad NC |
584 | static void do_arit PARAMS ((char *, unsigned long)); |
585 | static void do_cmp PARAMS ((char *, unsigned long)); | |
586 | static void do_mov PARAMS ((char *, unsigned long)); | |
587 | static void do_ldst PARAMS ((char *, unsigned long)); | |
588 | static void do_ldmstm PARAMS ((char *, unsigned long)); | |
589 | static void do_branch PARAMS ((char *, unsigned long)); | |
590 | static void do_swi PARAMS ((char *, unsigned long)); | |
28e4f854 | 591 | /* Pseudo Op codes. */ |
ae5ad4ad NC |
592 | static void do_adr PARAMS ((char *, unsigned long)); |
593 | static void do_adrl PARAMS ((char *, unsigned long)); | |
594 | static void do_nop PARAMS ((char *, unsigned long)); | |
28e4f854 | 595 | /* ARM 2. */ |
ae5ad4ad NC |
596 | static void do_mul PARAMS ((char *, unsigned long)); |
597 | static void do_mla PARAMS ((char *, unsigned long)); | |
28e4f854 | 598 | /* ARM 3. */ |
ae5ad4ad | 599 | static void do_swap PARAMS ((char *, unsigned long)); |
28e4f854 | 600 | /* ARM 6. */ |
ae5ad4ad NC |
601 | static void do_msr PARAMS ((char *, unsigned long)); |
602 | static void do_mrs PARAMS ((char *, unsigned long)); | |
28e4f854 | 603 | /* ARM 7M. */ |
ae5ad4ad | 604 | static void do_mull PARAMS ((char *, unsigned long)); |
28e4f854 | 605 | /* ARM THUMB. */ |
ae5ad4ad | 606 | static void do_bx PARAMS ((char *, unsigned long)); |
92a66162 | 607 | |
077b8428 NC |
608 | /* ARM_EXT_XScale. */ |
609 | static void do_mia PARAMS ((char *, unsigned long)); | |
610 | static void do_mar PARAMS ((char *, unsigned long)); | |
611 | static void do_mra PARAMS ((char *, unsigned long)); | |
612 | static void do_pld PARAMS ((char *, unsigned long)); | |
613 | static void do_ldrd PARAMS ((char *, unsigned long)); | |
614 | ||
615 | /* ARM_EXT_V5. */ | |
616 | static void do_blx PARAMS ((char *, unsigned long)); | |
617 | static void do_bkpt PARAMS ((char *, unsigned long)); | |
618 | static void do_clz PARAMS ((char *, unsigned long)); | |
619 | static void do_lstc2 PARAMS ((char *, unsigned long)); | |
620 | static void do_cdp2 PARAMS ((char *, unsigned long)); | |
621 | static void do_co_reg2 PARAMS ((char *, unsigned long)); | |
622 | ||
623 | static void do_t_blx PARAMS ((char *)); | |
624 | static void do_t_bkpt PARAMS ((char *)); | |
625 | ||
626 | /* ARM_EXT_V5E. */ | |
627 | static void do_smla PARAMS ((char *, unsigned long)); | |
628 | static void do_smlal PARAMS ((char *, unsigned long)); | |
629 | static void do_smul PARAMS ((char *, unsigned long)); | |
630 | static void do_qadd PARAMS ((char *, unsigned long)); | |
631 | static void do_co_reg2c PARAMS ((char *, unsigned long)); | |
632 | ||
28e4f854 | 633 | /* Coprocessor Instructions. */ |
ae5ad4ad NC |
634 | static void do_cdp PARAMS ((char *, unsigned long)); |
635 | static void do_lstc PARAMS ((char *, unsigned long)); | |
636 | static void do_co_reg PARAMS ((char *, unsigned long)); | |
637 | static void do_fp_ctrl PARAMS ((char *, unsigned long)); | |
638 | static void do_fp_ldst PARAMS ((char *, unsigned long)); | |
639 | static void do_fp_ldmstm PARAMS ((char *, unsigned long)); | |
640 | static void do_fp_dyadic PARAMS ((char *, unsigned long)); | |
641 | static void do_fp_monadic PARAMS ((char *, unsigned long)); | |
642 | static void do_fp_cmp PARAMS ((char *, unsigned long)); | |
643 | static void do_fp_from_reg PARAMS ((char *, unsigned long)); | |
644 | static void do_fp_to_reg PARAMS ((char *, unsigned long)); | |
645 | ||
646 | static void fix_new_arm PARAMS ((fragS *, int, short, expressionS *, int, int)); | |
647 | static int arm_reg_parse PARAMS ((char **)); | |
322f2c45 | 648 | static CONST struct asm_psr * arm_psr_parse PARAMS ((char **)); |
ae5ad4ad | 649 | static void symbol_locate PARAMS ((symbolS *, CONST char *, segT, valueT, fragS *)); |
252b5132 | 650 | static int add_to_lit_pool PARAMS ((void)); |
ae5ad4ad NC |
651 | static unsigned validate_immediate PARAMS ((unsigned)); |
652 | static unsigned validate_immediate_twopart PARAMS ((unsigned int, unsigned int *)); | |
276b1dc2 | 653 | static int validate_offset_imm PARAMS ((unsigned int, int)); |
252b5132 RH |
654 | static void opcode_select PARAMS ((int)); |
655 | static void end_of_line PARAMS ((char *)); | |
656 | static int reg_required_here PARAMS ((char **, int)); | |
322f2c45 | 657 | static int psr_required_here PARAMS ((char **)); |
252b5132 RH |
658 | static int co_proc_number PARAMS ((char **)); |
659 | static int cp_opc_expr PARAMS ((char **, int, int)); | |
660 | static int cp_reg_required_here PARAMS ((char **, int)); | |
661 | static int fp_reg_required_here PARAMS ((char **, int)); | |
662 | static int cp_address_offset PARAMS ((char **)); | |
663 | static int cp_address_required_here PARAMS ((char **)); | |
664 | static int my_get_float_expression PARAMS ((char **)); | |
665 | static int skip_past_comma PARAMS ((char **)); | |
666 | static int walk_no_bignums PARAMS ((symbolS *)); | |
ae5ad4ad | 667 | static int negate_data_op PARAMS ((unsigned long *, unsigned long)); |
252b5132 RH |
668 | static int data_op2 PARAMS ((char **)); |
669 | static int fp_op2 PARAMS ((char **)); | |
670 | static long reg_list PARAMS ((char **)); | |
671 | static void thumb_load_store PARAMS ((char *, int, int)); | |
672 | static int decode_shift PARAMS ((char **, int)); | |
673 | static int ldst_extend PARAMS ((char **, int)); | |
674 | static void thumb_add_sub PARAMS ((char *, int)); | |
675 | static void insert_reg PARAMS ((int)); | |
676 | static void thumb_shift PARAMS ((char *, int)); | |
677 | static void thumb_mov_compare PARAMS ((char *, int)); | |
678 | static void set_constant_flonums PARAMS ((void)); | |
679 | static valueT md_chars_to_number PARAMS ((char *, int)); | |
680 | static void insert_reg_alias PARAMS ((char *, int)); | |
49a5575c | 681 | static void output_inst PARAMS ((void)); |
252b5132 | 682 | #ifdef OBJ_ELF |
661e4995 | 683 | static bfd_reloc_code_real_type arm_parse_reloc PARAMS ((void)); |
252b5132 RH |
684 | #endif |
685 | ||
686 | /* ARM instructions take 4bytes in the object file, Thumb instructions | |
ec9991dc | 687 | take 2: */ |
252b5132 RH |
688 | #define INSN_SIZE 4 |
689 | ||
077b8428 NC |
690 | /* LONGEST_INST is the longest basic instruction name without |
691 | conditions or flags. ARM7M has 4 of length 5. El Segundo | |
692 | has one basic instruction name of length 7 (SMLALxy). */ | |
693 | #define LONGEST_INST 7 | |
252b5132 | 694 | |
28e4f854 | 695 | struct asm_opcode |
252b5132 | 696 | { |
28e4f854 | 697 | /* Basic string to match. */ |
d78c7dca | 698 | CONST char * template; |
28e4f854 KH |
699 | |
700 | /* Basic instruction code. */ | |
701 | unsigned long value; | |
92a66162 | 702 | |
28e4f854 KH |
703 | /* Compulsory suffix that must follow conds. If "", then the |
704 | instruction is not conditional and must have no suffix. */ | |
d78c7dca | 705 | CONST char * comp_suffix; |
92a66162 | 706 | |
28e4f854 | 707 | /* Bits to toggle if flag 'n' set. */ |
d78c7dca | 708 | CONST struct asm_flg * flags; |
28e4f854 KH |
709 | |
710 | /* Which CPU variants this exists for. */ | |
711 | unsigned long variants; | |
712 | ||
713 | /* Function to call to parse args. */ | |
d78c7dca | 714 | void (* parms) PARAMS ((char *, unsigned long)); |
252b5132 RH |
715 | }; |
716 | ||
28e4f854 | 717 | static CONST struct asm_opcode insns[] = |
252b5132 | 718 | { |
077b8428 NC |
719 | /* Intel XScale extensions to ARM V5 ISA. */ |
720 | {"mia", 0x0e200010, NULL, NULL, ARM_EXT_XSCALE, do_mia}, | |
721 | {"miaph", 0x0e280010, NULL, NULL, ARM_EXT_XSCALE, do_mia}, | |
722 | {"miabb", 0x0e2c0010, NULL, NULL, ARM_EXT_XSCALE, do_mia}, | |
723 | {"miabt", 0x0e2d0010, NULL, NULL, ARM_EXT_XSCALE, do_mia}, | |
724 | {"miatb", 0x0e2e0010, NULL, NULL, ARM_EXT_XSCALE, do_mia}, | |
725 | {"miatt", 0x0e2f0010, NULL, NULL, ARM_EXT_XSCALE, do_mia}, | |
726 | {"mar", 0x0c400000, NULL, NULL, ARM_EXT_XSCALE, do_mar}, | |
727 | {"mra", 0x0c500000, NULL, NULL, ARM_EXT_XSCALE, do_mra}, | |
728 | {"pld", 0xf450f000, "", NULL, ARM_EXT_XSCALE, do_pld}, | |
729 | {"ldr", 0x000000d0, NULL, ldr_flags, ARM_ANY, do_ldrd}, | |
730 | {"str", 0x000000f0, NULL, str_flags, ARM_ANY, do_ldrd}, | |
731 | ||
28e4f854 | 732 | /* ARM Instructions. */ |
252b5132 RH |
733 | {"and", 0x00000000, NULL, s_flag, ARM_ANY, do_arit}, |
734 | {"eor", 0x00200000, NULL, s_flag, ARM_ANY, do_arit}, | |
735 | {"sub", 0x00400000, NULL, s_flag, ARM_ANY, do_arit}, | |
736 | {"rsb", 0x00600000, NULL, s_flag, ARM_ANY, do_arit}, | |
737 | {"add", 0x00800000, NULL, s_flag, ARM_ANY, do_arit}, | |
738 | {"adc", 0x00a00000, NULL, s_flag, ARM_ANY, do_arit}, | |
739 | {"sbc", 0x00c00000, NULL, s_flag, ARM_ANY, do_arit}, | |
740 | {"rsc", 0x00e00000, NULL, s_flag, ARM_ANY, do_arit}, | |
741 | {"orr", 0x01800000, NULL, s_flag, ARM_ANY, do_arit}, | |
742 | {"bic", 0x01c00000, NULL, s_flag, ARM_ANY, do_arit}, | |
743 | {"tst", 0x01000000, NULL, cmp_flags, ARM_ANY, do_cmp}, | |
744 | {"teq", 0x01200000, NULL, cmp_flags, ARM_ANY, do_cmp}, | |
745 | {"cmp", 0x01400000, NULL, cmp_flags, ARM_ANY, do_cmp}, | |
746 | {"cmn", 0x01600000, NULL, cmp_flags, ARM_ANY, do_cmp}, | |
747 | {"mov", 0x01a00000, NULL, s_flag, ARM_ANY, do_mov}, | |
748 | {"mvn", 0x01e00000, NULL, s_flag, ARM_ANY, do_mov}, | |
749 | {"str", 0x04000000, NULL, str_flags, ARM_ANY, do_ldst}, | |
750 | {"ldr", 0x04100000, NULL, ldr_flags, ARM_ANY, do_ldst}, | |
751 | {"stm", 0x08000000, NULL, stm_flags, ARM_ANY, do_ldmstm}, | |
752 | {"ldm", 0x08100000, NULL, ldm_flags, ARM_ANY, do_ldmstm}, | |
753 | {"swi", 0x0f000000, NULL, NULL, ARM_ANY, do_swi}, | |
056350c6 NC |
754 | #ifdef TE_WINCE |
755 | {"bl", 0x0b000000, NULL, NULL, ARM_ANY, do_branch}, | |
756 | {"b", 0x0a000000, NULL, NULL, ARM_ANY, do_branch}, | |
757 | #else | |
252b5132 RH |
758 | {"bl", 0x0bfffffe, NULL, NULL, ARM_ANY, do_branch}, |
759 | {"b", 0x0afffffe, NULL, NULL, ARM_ANY, do_branch}, | |
056350c6 | 760 | #endif |
28e4f854 KH |
761 | |
762 | /* Pseudo ops. */ | |
252b5132 | 763 | {"adr", 0x028f0000, NULL, NULL, ARM_ANY, do_adr}, |
49a5575c | 764 | {"adrl", 0x028f0000, NULL, NULL, ARM_ANY, do_adrl}, |
252b5132 RH |
765 | {"nop", 0x01a00000, NULL, NULL, ARM_ANY, do_nop}, |
766 | ||
28e4f854 | 767 | /* ARM 2 multiplies. */ |
252b5132 RH |
768 | {"mul", 0x00000090, NULL, s_flag, ARM_2UP, do_mul}, |
769 | {"mla", 0x00200090, NULL, s_flag, ARM_2UP, do_mla}, | |
770 | ||
28e4f854 | 771 | /* ARM 3 - swp instructions. */ |
252b5132 RH |
772 | {"swp", 0x01000090, NULL, byte_flag, ARM_3UP, do_swap}, |
773 | ||
28e4f854 | 774 | /* ARM 6 Coprocessor instructions. */ |
252b5132 RH |
775 | {"mrs", 0x010f0000, NULL, NULL, ARM_6UP, do_mrs}, |
776 | {"msr", 0x0120f000, NULL, NULL, ARM_6UP, do_msr}, | |
777 | /* ScottB: our code uses 0x0128f000 for msr. | |
322f2c45 NC |
778 | NickC: but this is wrong because the bits 16 through 19 are |
779 | handled by the PSR_xxx defines above. */ | |
252b5132 | 780 | |
28e4f854 | 781 | /* ARM 7M long multiplies - need signed/unsigned flags! */ |
077b8428 NC |
782 | {"smull", 0x00c00090, NULL, s_flag, ARM_EXT_LONGMUL, do_mull}, |
783 | {"umull", 0x00800090, NULL, s_flag, ARM_EXT_LONGMUL, do_mull}, | |
784 | {"smlal", 0x00e00090, NULL, s_flag, ARM_EXT_LONGMUL, do_mull}, | |
785 | {"umlal", 0x00a00090, NULL, s_flag, ARM_EXT_LONGMUL, do_mull}, | |
252b5132 | 786 | |
28e4f854 | 787 | /* ARM THUMB interworking. */ |
077b8428 | 788 | {"bx", 0x012fff10, NULL, NULL, ARM_EXT_THUMB, do_bx}, |
252b5132 | 789 | |
28e4f854 | 790 | /* Floating point instructions. */ |
252b5132 RH |
791 | {"wfs", 0x0e200110, NULL, NULL, FPU_ALL, do_fp_ctrl}, |
792 | {"rfs", 0x0e300110, NULL, NULL, FPU_ALL, do_fp_ctrl}, | |
793 | {"wfc", 0x0e400110, NULL, NULL, FPU_ALL, do_fp_ctrl}, | |
794 | {"rfc", 0x0e500110, NULL, NULL, FPU_ALL, do_fp_ctrl}, | |
795 | {"ldf", 0x0c100100, "sdep", NULL, FPU_ALL, do_fp_ldst}, | |
796 | {"stf", 0x0c000100, "sdep", NULL, FPU_ALL, do_fp_ldst}, | |
797 | {"lfm", 0x0c100200, NULL, lfm_flags, FPU_MEMMULTI, do_fp_ldmstm}, | |
798 | {"sfm", 0x0c000200, NULL, sfm_flags, FPU_MEMMULTI, do_fp_ldmstm}, | |
799 | {"mvf", 0x0e008100, "sde", round_flags, FPU_ALL, do_fp_monadic}, | |
800 | {"mnf", 0x0e108100, "sde", round_flags, FPU_ALL, do_fp_monadic}, | |
801 | {"abs", 0x0e208100, "sde", round_flags, FPU_ALL, do_fp_monadic}, | |
802 | {"rnd", 0x0e308100, "sde", round_flags, FPU_ALL, do_fp_monadic}, | |
803 | {"sqt", 0x0e408100, "sde", round_flags, FPU_ALL, do_fp_monadic}, | |
804 | {"log", 0x0e508100, "sde", round_flags, FPU_ALL, do_fp_monadic}, | |
805 | {"lgn", 0x0e608100, "sde", round_flags, FPU_ALL, do_fp_monadic}, | |
806 | {"exp", 0x0e708100, "sde", round_flags, FPU_ALL, do_fp_monadic}, | |
807 | {"sin", 0x0e808100, "sde", round_flags, FPU_ALL, do_fp_monadic}, | |
808 | {"cos", 0x0e908100, "sde", round_flags, FPU_ALL, do_fp_monadic}, | |
809 | {"tan", 0x0ea08100, "sde", round_flags, FPU_ALL, do_fp_monadic}, | |
810 | {"asn", 0x0eb08100, "sde", round_flags, FPU_ALL, do_fp_monadic}, | |
811 | {"acs", 0x0ec08100, "sde", round_flags, FPU_ALL, do_fp_monadic}, | |
812 | {"atn", 0x0ed08100, "sde", round_flags, FPU_ALL, do_fp_monadic}, | |
813 | {"urd", 0x0ee08100, "sde", round_flags, FPU_ALL, do_fp_monadic}, | |
814 | {"nrm", 0x0ef08100, "sde", round_flags, FPU_ALL, do_fp_monadic}, | |
815 | {"adf", 0x0e000100, "sde", round_flags, FPU_ALL, do_fp_dyadic}, | |
816 | {"suf", 0x0e200100, "sde", round_flags, FPU_ALL, do_fp_dyadic}, | |
817 | {"rsf", 0x0e300100, "sde", round_flags, FPU_ALL, do_fp_dyadic}, | |
818 | {"muf", 0x0e100100, "sde", round_flags, FPU_ALL, do_fp_dyadic}, | |
819 | {"dvf", 0x0e400100, "sde", round_flags, FPU_ALL, do_fp_dyadic}, | |
820 | {"rdf", 0x0e500100, "sde", round_flags, FPU_ALL, do_fp_dyadic}, | |
821 | {"pow", 0x0e600100, "sde", round_flags, FPU_ALL, do_fp_dyadic}, | |
822 | {"rpw", 0x0e700100, "sde", round_flags, FPU_ALL, do_fp_dyadic}, | |
823 | {"rmf", 0x0e800100, "sde", round_flags, FPU_ALL, do_fp_dyadic}, | |
824 | {"fml", 0x0e900100, "sde", round_flags, FPU_ALL, do_fp_dyadic}, | |
825 | {"fdv", 0x0ea00100, "sde", round_flags, FPU_ALL, do_fp_dyadic}, | |
826 | {"frd", 0x0eb00100, "sde", round_flags, FPU_ALL, do_fp_dyadic}, | |
827 | {"pol", 0x0ec00100, "sde", round_flags, FPU_ALL, do_fp_dyadic}, | |
828 | {"cmf", 0x0e90f110, NULL, except_flag, FPU_ALL, do_fp_cmp}, | |
829 | {"cnf", 0x0eb0f110, NULL, except_flag, FPU_ALL, do_fp_cmp}, | |
830 | /* The FPA10 data sheet suggests that the 'E' of cmfe/cnfe should not | |
831 | be an optional suffix, but part of the instruction. To be compatible, | |
832 | we accept either. */ | |
833 | {"cmfe", 0x0ed0f110, NULL, NULL, FPU_ALL, do_fp_cmp}, | |
834 | {"cnfe", 0x0ef0f110, NULL, NULL, FPU_ALL, do_fp_cmp}, | |
835 | {"flt", 0x0e000110, "sde", round_flags, FPU_ALL, do_fp_from_reg}, | |
836 | {"fix", 0x0e100110, NULL, fix_flags, FPU_ALL, do_fp_to_reg}, | |
837 | ||
ec9991dc | 838 | /* Generic copressor instructions. */ |
252b5132 RH |
839 | {"cdp", 0x0e000000, NULL, NULL, ARM_2UP, do_cdp}, |
840 | {"ldc", 0x0c100000, NULL, cplong_flag, ARM_2UP, do_lstc}, | |
841 | {"stc", 0x0c000000, NULL, cplong_flag, ARM_2UP, do_lstc}, | |
842 | {"mcr", 0x0e000010, NULL, NULL, ARM_2UP, do_co_reg}, | |
843 | {"mrc", 0x0e100010, NULL, NULL, ARM_2UP, do_co_reg}, | |
077b8428 NC |
844 | |
845 | /* ARM ISA extension 5. */ | |
846 | /* Note: blx is actually 2 opcodes, so the .value is set dynamically. | |
847 | And it's sometimes conditional and sometimes not. */ | |
848 | {"blx", 0, NULL, NULL, ARM_EXT_V5, do_blx}, | |
849 | {"clz", 0x016f0f10, NULL, NULL, ARM_EXT_V5, do_clz}, | |
850 | {"bkpt", 0xe1200070, "", NULL, ARM_EXT_V5, do_bkpt}, | |
851 | {"ldc2", 0xfc100000, "", cplong_flag, ARM_EXT_V5, do_lstc2}, | |
852 | {"stc2", 0xfc000000, "", cplong_flag, ARM_EXT_V5, do_lstc2}, | |
853 | {"cdp2", 0xfe000000, "", NULL, ARM_EXT_V5, do_cdp2}, | |
854 | {"mcr2", 0xfe000010, "", NULL, ARM_EXT_V5, do_co_reg2}, | |
855 | {"mrc2", 0xfe100010, "", NULL, ARM_EXT_V5, do_co_reg2}, | |
856 | ||
857 | /* ARM ISA extension 5E, El Segundo. */ | |
858 | {"smlabb", 0x01000080, NULL, NULL, ARM_EXT_V5E, do_smla}, | |
859 | {"smlatb", 0x010000a0, NULL, NULL, ARM_EXT_V5E, do_smla}, | |
860 | {"smlabt", 0x010000c0, NULL, NULL, ARM_EXT_V5E, do_smla}, | |
861 | {"smlatt", 0x010000e0, NULL, NULL, ARM_EXT_V5E, do_smla}, | |
862 | ||
863 | {"smlawb", 0x01200080, NULL, NULL, ARM_EXT_V5E, do_smla}, | |
864 | {"smlawt", 0x012000c0, NULL, NULL, ARM_EXT_V5E, do_smla}, | |
865 | ||
866 | {"smlalbb",0x01400080, NULL, NULL, ARM_EXT_V5E, do_smlal}, | |
867 | {"smlaltb",0x014000a0, NULL, NULL, ARM_EXT_V5E, do_smlal}, | |
868 | {"smlalbt",0x014000c0, NULL, NULL, ARM_EXT_V5E, do_smlal}, | |
869 | {"smlaltt",0x014000e0, NULL, NULL, ARM_EXT_V5E, do_smlal}, | |
870 | ||
871 | {"smulbb", 0x01600080, NULL, NULL, ARM_EXT_V5E, do_smul}, | |
872 | {"smultb", 0x016000a0, NULL, NULL, ARM_EXT_V5E, do_smul}, | |
873 | {"smulbt", 0x016000c0, NULL, NULL, ARM_EXT_V5E, do_smul}, | |
874 | {"smultt", 0x016000e0, NULL, NULL, ARM_EXT_V5E, do_smul}, | |
875 | ||
876 | {"smulwb", 0x012000a0, NULL, NULL, ARM_EXT_V5E, do_smul}, | |
877 | {"smulwt", 0x012000e0, NULL, NULL, ARM_EXT_V5E, do_smul}, | |
878 | ||
879 | {"qadd", 0x01000050, NULL, NULL, ARM_EXT_V5E, do_qadd}, | |
880 | {"qdadd", 0x01400050, NULL, NULL, ARM_EXT_V5E, do_qadd}, | |
881 | {"qsub", 0x01200050, NULL, NULL, ARM_EXT_V5E, do_qadd}, | |
882 | {"qdsub", 0x01600050, NULL, NULL, ARM_EXT_V5E, do_qadd}, | |
883 | ||
884 | {"mcrr", 0x0c400000, NULL, NULL, ARM_EXT_V5E, do_co_reg2c}, | |
885 | {"mrrc", 0x0c500000, NULL, NULL, ARM_EXT_V5E, do_co_reg2c}, | |
252b5132 RH |
886 | }; |
887 | ||
ec9991dc | 888 | /* Defines for various bits that we will want to toggle. */ |
252b5132 RH |
889 | #define INST_IMMEDIATE 0x02000000 |
890 | #define OFFSET_REG 0x02000000 | |
891 | #define HWOFFSET_IMM 0x00400000 | |
892 | #define SHIFT_BY_REG 0x00000010 | |
893 | #define PRE_INDEX 0x01000000 | |
894 | #define INDEX_UP 0x00800000 | |
895 | #define WRITE_BACK 0x00200000 | |
913f265c | 896 | #define LDM_TYPE_2_OR_3 0x00400000 |
252b5132 RH |
897 | |
898 | #define LITERAL_MASK 0xf000f000 | |
899 | #define COND_MASK 0xf0000000 | |
900 | #define OPCODE_MASK 0xfe1fffff | |
901 | #define DATA_OP_SHIFT 21 | |
902 | ||
ec9991dc | 903 | /* Codes to distinguish the arithmetic instructions. */ |
252b5132 RH |
904 | #define OPCODE_AND 0 |
905 | #define OPCODE_EOR 1 | |
906 | #define OPCODE_SUB 2 | |
907 | #define OPCODE_RSB 3 | |
908 | #define OPCODE_ADD 4 | |
909 | #define OPCODE_ADC 5 | |
910 | #define OPCODE_SBC 6 | |
911 | #define OPCODE_RSC 7 | |
912 | #define OPCODE_TST 8 | |
913 | #define OPCODE_TEQ 9 | |
914 | #define OPCODE_CMP 10 | |
915 | #define OPCODE_CMN 11 | |
916 | #define OPCODE_ORR 12 | |
917 | #define OPCODE_MOV 13 | |
918 | #define OPCODE_BIC 14 | |
919 | #define OPCODE_MVN 15 | |
920 | ||
ae5ad4ad NC |
921 | static void do_t_nop PARAMS ((char *)); |
922 | static void do_t_arit PARAMS ((char *)); | |
923 | static void do_t_add PARAMS ((char *)); | |
924 | static void do_t_asr PARAMS ((char *)); | |
925 | static void do_t_branch9 PARAMS ((char *)); | |
926 | static void do_t_branch12 PARAMS ((char *)); | |
927 | static void do_t_branch23 PARAMS ((char *)); | |
928 | static void do_t_bx PARAMS ((char *)); | |
929 | static void do_t_compare PARAMS ((char *)); | |
930 | static void do_t_ldmstm PARAMS ((char *)); | |
931 | static void do_t_ldr PARAMS ((char *)); | |
932 | static void do_t_ldrb PARAMS ((char *)); | |
933 | static void do_t_ldrh PARAMS ((char *)); | |
934 | static void do_t_lds PARAMS ((char *)); | |
935 | static void do_t_lsl PARAMS ((char *)); | |
936 | static void do_t_lsr PARAMS ((char *)); | |
937 | static void do_t_mov PARAMS ((char *)); | |
938 | static void do_t_push_pop PARAMS ((char *)); | |
939 | static void do_t_str PARAMS ((char *)); | |
940 | static void do_t_strb PARAMS ((char *)); | |
941 | static void do_t_strh PARAMS ((char *)); | |
942 | static void do_t_sub PARAMS ((char *)); | |
943 | static void do_t_swi PARAMS ((char *)); | |
944 | static void do_t_adr PARAMS ((char *)); | |
252b5132 RH |
945 | |
946 | #define T_OPCODE_MUL 0x4340 | |
947 | #define T_OPCODE_TST 0x4200 | |
948 | #define T_OPCODE_CMN 0x42c0 | |
949 | #define T_OPCODE_NEG 0x4240 | |
950 | #define T_OPCODE_MVN 0x43c0 | |
951 | ||
952 | #define T_OPCODE_ADD_R3 0x1800 | |
953 | #define T_OPCODE_SUB_R3 0x1a00 | |
954 | #define T_OPCODE_ADD_HI 0x4400 | |
955 | #define T_OPCODE_ADD_ST 0xb000 | |
956 | #define T_OPCODE_SUB_ST 0xb080 | |
957 | #define T_OPCODE_ADD_SP 0xa800 | |
958 | #define T_OPCODE_ADD_PC 0xa000 | |
959 | #define T_OPCODE_ADD_I8 0x3000 | |
960 | #define T_OPCODE_SUB_I8 0x3800 | |
961 | #define T_OPCODE_ADD_I3 0x1c00 | |
962 | #define T_OPCODE_SUB_I3 0x1e00 | |
963 | ||
964 | #define T_OPCODE_ASR_R 0x4100 | |
965 | #define T_OPCODE_LSL_R 0x4080 | |
966 | #define T_OPCODE_LSR_R 0x40c0 | |
967 | #define T_OPCODE_ASR_I 0x1000 | |
968 | #define T_OPCODE_LSL_I 0x0000 | |
969 | #define T_OPCODE_LSR_I 0x0800 | |
970 | ||
971 | #define T_OPCODE_MOV_I8 0x2000 | |
972 | #define T_OPCODE_CMP_I8 0x2800 | |
973 | #define T_OPCODE_CMP_LR 0x4280 | |
974 | #define T_OPCODE_MOV_HR 0x4600 | |
975 | #define T_OPCODE_CMP_HR 0x4500 | |
976 | ||
977 | #define T_OPCODE_LDR_PC 0x4800 | |
978 | #define T_OPCODE_LDR_SP 0x9800 | |
979 | #define T_OPCODE_STR_SP 0x9000 | |
980 | #define T_OPCODE_LDR_IW 0x6800 | |
981 | #define T_OPCODE_STR_IW 0x6000 | |
982 | #define T_OPCODE_LDR_IH 0x8800 | |
983 | #define T_OPCODE_STR_IH 0x8000 | |
984 | #define T_OPCODE_LDR_IB 0x7800 | |
985 | #define T_OPCODE_STR_IB 0x7000 | |
986 | #define T_OPCODE_LDR_RW 0x5800 | |
987 | #define T_OPCODE_STR_RW 0x5000 | |
988 | #define T_OPCODE_LDR_RH 0x5a00 | |
989 | #define T_OPCODE_STR_RH 0x5200 | |
990 | #define T_OPCODE_LDR_RB 0x5c00 | |
991 | #define T_OPCODE_STR_RB 0x5400 | |
992 | ||
993 | #define T_OPCODE_PUSH 0xb400 | |
994 | #define T_OPCODE_POP 0xbc00 | |
995 | ||
996 | #define T_OPCODE_BRANCH 0xe7fe | |
997 | ||
998 | static int thumb_reg PARAMS ((char ** str, int hi_lo)); | |
999 | ||
ec9991dc | 1000 | #define THUMB_SIZE 2 /* Size of thumb instruction. */ |
252b5132 RH |
1001 | #define THUMB_REG_LO 0x1 |
1002 | #define THUMB_REG_HI 0x2 | |
1003 | #define THUMB_REG_ANY 0x3 | |
1004 | ||
1005 | #define THUMB_H1 0x0080 | |
1006 | #define THUMB_H2 0x0040 | |
1007 | ||
1008 | #define THUMB_ASR 0 | |
1009 | #define THUMB_LSL 1 | |
1010 | #define THUMB_LSR 2 | |
1011 | ||
1012 | #define THUMB_MOVE 0 | |
1013 | #define THUMB_COMPARE 1 | |
1014 | ||
1015 | #define THUMB_LOAD 0 | |
1016 | #define THUMB_STORE 1 | |
1017 | ||
1018 | #define THUMB_PP_PC_LR 0x0100 | |
1019 | ||
ec9991dc | 1020 | /* These three are used for immediate shifts, do not alter. */ |
252b5132 RH |
1021 | #define THUMB_WORD 2 |
1022 | #define THUMB_HALFWORD 1 | |
1023 | #define THUMB_BYTE 0 | |
1024 | ||
28e4f854 | 1025 | struct thumb_opcode |
252b5132 | 1026 | { |
28e4f854 | 1027 | /* Basic string to match. */ |
d78c7dca | 1028 | CONST char * template; |
28e4f854 KH |
1029 | |
1030 | /* Basic instruction code. */ | |
1031 | unsigned long value; | |
1032 | ||
1033 | int size; | |
1034 | ||
1dab94dd | 1035 | /* Which CPU variants this exists for. */ |
28e4f854 KH |
1036 | unsigned long variants; |
1037 | ||
1038 | /* Function to call to parse args. */ | |
d78c7dca | 1039 | void (* parms) PARAMS ((char *)); |
252b5132 RH |
1040 | }; |
1041 | ||
1042 | static CONST struct thumb_opcode tinsns[] = | |
1043 | { | |
077b8428 NC |
1044 | {"adc", 0x4140, 2, ARM_EXT_THUMB, do_t_arit}, |
1045 | {"add", 0x0000, 2, ARM_EXT_THUMB, do_t_add}, | |
1046 | {"and", 0x4000, 2, ARM_EXT_THUMB, do_t_arit}, | |
1047 | {"asr", 0x0000, 2, ARM_EXT_THUMB, do_t_asr}, | |
1048 | {"b", T_OPCODE_BRANCH, 2, ARM_EXT_THUMB, do_t_branch12}, | |
1049 | {"beq", 0xd0fe, 2, ARM_EXT_THUMB, do_t_branch9}, | |
1050 | {"bne", 0xd1fe, 2, ARM_EXT_THUMB, do_t_branch9}, | |
1051 | {"bcs", 0xd2fe, 2, ARM_EXT_THUMB, do_t_branch9}, | |
1052 | {"bhs", 0xd2fe, 2, ARM_EXT_THUMB, do_t_branch9}, | |
1053 | {"bcc", 0xd3fe, 2, ARM_EXT_THUMB, do_t_branch9}, | |
1054 | {"bul", 0xd3fe, 2, ARM_EXT_THUMB, do_t_branch9}, | |
1055 | {"blo", 0xd3fe, 2, ARM_EXT_THUMB, do_t_branch9}, | |
1056 | {"bmi", 0xd4fe, 2, ARM_EXT_THUMB, do_t_branch9}, | |
1057 | {"bpl", 0xd5fe, 2, ARM_EXT_THUMB, do_t_branch9}, | |
1058 | {"bvs", 0xd6fe, 2, ARM_EXT_THUMB, do_t_branch9}, | |
1059 | {"bvc", 0xd7fe, 2, ARM_EXT_THUMB, do_t_branch9}, | |
1060 | {"bhi", 0xd8fe, 2, ARM_EXT_THUMB, do_t_branch9}, | |
1061 | {"bls", 0xd9fe, 2, ARM_EXT_THUMB, do_t_branch9}, | |
1062 | {"bge", 0xdafe, 2, ARM_EXT_THUMB, do_t_branch9}, | |
1063 | {"blt", 0xdbfe, 2, ARM_EXT_THUMB, do_t_branch9}, | |
1064 | {"bgt", 0xdcfe, 2, ARM_EXT_THUMB, do_t_branch9}, | |
1065 | {"ble", 0xddfe, 2, ARM_EXT_THUMB, do_t_branch9}, | |
1066 | {"bal", 0xdefe, 2, ARM_EXT_THUMB, do_t_branch9}, | |
1067 | {"bic", 0x4380, 2, ARM_EXT_THUMB, do_t_arit}, | |
1068 | {"bl", 0xf7fffffe, 4, ARM_EXT_THUMB, do_t_branch23}, | |
1069 | {"blx", 0, 0, ARM_EXT_V5, do_t_blx}, | |
1070 | {"bkpt", 0xbe00, 2, ARM_EXT_V5, do_t_bkpt}, | |
1071 | {"bx", 0x4700, 2, ARM_EXT_THUMB, do_t_bx}, | |
1072 | {"cmn", T_OPCODE_CMN, 2, ARM_EXT_THUMB, do_t_arit}, | |
1073 | {"cmp", 0x0000, 2, ARM_EXT_THUMB, do_t_compare}, | |
1074 | {"eor", 0x4040, 2, ARM_EXT_THUMB, do_t_arit}, | |
1075 | {"ldmia", 0xc800, 2, ARM_EXT_THUMB, do_t_ldmstm}, | |
1076 | {"ldr", 0x0000, 2, ARM_EXT_THUMB, do_t_ldr}, | |
1077 | {"ldrb", 0x0000, 2, ARM_EXT_THUMB, do_t_ldrb}, | |
1078 | {"ldrh", 0x0000, 2, ARM_EXT_THUMB, do_t_ldrh}, | |
1079 | {"ldrsb", 0x5600, 2, ARM_EXT_THUMB, do_t_lds}, | |
1080 | {"ldrsh", 0x5e00, 2, ARM_EXT_THUMB, do_t_lds}, | |
1081 | {"ldsb", 0x5600, 2, ARM_EXT_THUMB, do_t_lds}, | |
1082 | {"ldsh", 0x5e00, 2, ARM_EXT_THUMB, do_t_lds}, | |
1083 | {"lsl", 0x0000, 2, ARM_EXT_THUMB, do_t_lsl}, | |
1084 | {"lsr", 0x0000, 2, ARM_EXT_THUMB, do_t_lsr}, | |
1085 | {"mov", 0x0000, 2, ARM_EXT_THUMB, do_t_mov}, | |
1086 | {"mul", T_OPCODE_MUL, 2, ARM_EXT_THUMB, do_t_arit}, | |
1087 | {"mvn", T_OPCODE_MVN, 2, ARM_EXT_THUMB, do_t_arit}, | |
1088 | {"neg", T_OPCODE_NEG, 2, ARM_EXT_THUMB, do_t_arit}, | |
1089 | {"orr", 0x4300, 2, ARM_EXT_THUMB, do_t_arit}, | |
1090 | {"pop", 0xbc00, 2, ARM_EXT_THUMB, do_t_push_pop}, | |
1091 | {"push", 0xb400, 2, ARM_EXT_THUMB, do_t_push_pop}, | |
1092 | {"ror", 0x41c0, 2, ARM_EXT_THUMB, do_t_arit}, | |
1093 | {"sbc", 0x4180, 2, ARM_EXT_THUMB, do_t_arit}, | |
1094 | {"stmia", 0xc000, 2, ARM_EXT_THUMB, do_t_ldmstm}, | |
1095 | {"str", 0x0000, 2, ARM_EXT_THUMB, do_t_str}, | |
1096 | {"strb", 0x0000, 2, ARM_EXT_THUMB, do_t_strb}, | |
1097 | {"strh", 0x0000, 2, ARM_EXT_THUMB, do_t_strh}, | |
1098 | {"swi", 0xdf00, 2, ARM_EXT_THUMB, do_t_swi}, | |
1099 | {"sub", 0x0000, 2, ARM_EXT_THUMB, do_t_sub}, | |
1100 | {"tst", T_OPCODE_TST, 2, ARM_EXT_THUMB, do_t_arit}, | |
28e4f854 | 1101 | /* Pseudo ops: */ |
077b8428 NC |
1102 | {"adr", 0x0000, 2, ARM_EXT_THUMB, do_t_adr}, |
1103 | {"nop", 0x46C0, 2, ARM_EXT_THUMB, do_t_nop}, /* mov r8,r8 */ | |
252b5132 RH |
1104 | }; |
1105 | ||
1106 | struct reg_entry | |
1107 | { | |
d78c7dca NC |
1108 | CONST char * name; |
1109 | int number; | |
252b5132 RH |
1110 | }; |
1111 | ||
1112 | #define int_register(reg) ((reg) >= 0 && (reg) <= 15) | |
1113 | #define cp_register(reg) ((reg) >= 32 && (reg) <= 47) | |
1114 | #define fp_register(reg) ((reg) >= 16 && (reg) <= 23) | |
1115 | ||
1116 | #define REG_PC 15 | |
1117 | #define REG_LR 14 | |
1118 | #define REG_SP 13 | |
1119 | ||
28e4f854 | 1120 | /* These are the standard names. Users can add aliases with .req. */ |
252b5132 RH |
1121 | static CONST struct reg_entry reg_table[] = |
1122 | { | |
557537a5 | 1123 | /* Processor Register Numbers. */ |
252b5132 RH |
1124 | {"r0", 0}, {"r1", 1}, {"r2", 2}, {"r3", 3}, |
1125 | {"r4", 4}, {"r5", 5}, {"r6", 6}, {"r7", 7}, | |
1126 | {"r8", 8}, {"r9", 9}, {"r10", 10}, {"r11", 11}, | |
1127 | {"r12", 12}, {"r13", REG_SP},{"r14", REG_LR},{"r15", REG_PC}, | |
557537a5 | 1128 | /* APCS conventions. */ |
252b5132 RH |
1129 | {"a1", 0}, {"a2", 1}, {"a3", 2}, {"a4", 3}, |
1130 | {"v1", 4}, {"v2", 5}, {"v3", 6}, {"v4", 7}, {"v5", 8}, | |
1131 | {"v6", 9}, {"sb", 9}, {"v7", 10}, {"sl", 10}, | |
1132 | {"fp", 11}, {"ip", 12}, {"sp", REG_SP},{"lr", REG_LR},{"pc", REG_PC}, | |
557537a5 NC |
1133 | /* ATPCS additions to APCS conventions. */ |
1134 | {"wr", 7}, {"v8", 11}, | |
1135 | /* FP Registers. */ | |
252b5132 RH |
1136 | {"f0", 16}, {"f1", 17}, {"f2", 18}, {"f3", 19}, |
1137 | {"f4", 20}, {"f5", 21}, {"f6", 22}, {"f7", 23}, | |
1138 | {"c0", 32}, {"c1", 33}, {"c2", 34}, {"c3", 35}, | |
1139 | {"c4", 36}, {"c5", 37}, {"c6", 38}, {"c7", 39}, | |
1140 | {"c8", 40}, {"c9", 41}, {"c10", 42}, {"c11", 43}, | |
1141 | {"c12", 44}, {"c13", 45}, {"c14", 46}, {"c15", 47}, | |
1142 | {"cr0", 32}, {"cr1", 33}, {"cr2", 34}, {"cr3", 35}, | |
1143 | {"cr4", 36}, {"cr5", 37}, {"cr6", 38}, {"cr7", 39}, | |
1144 | {"cr8", 40}, {"cr9", 41}, {"cr10", 42}, {"cr11", 43}, | |
1145 | {"cr12", 44}, {"cr13", 45}, {"cr14", 46}, {"cr15", 47}, | |
557537a5 NC |
1146 | /* ATPCS additions to float register names. */ |
1147 | {"s0",16}, {"s1",17}, {"s2",18}, {"s3",19}, | |
1148 | {"s4",20}, {"s5",21}, {"s6",22}, {"s7",23}, | |
1149 | {"d0",16}, {"d1",17}, {"d2",18}, {"d3",19}, | |
1150 | {"d4",20}, {"d5",21}, {"d6",22}, {"d7",23}, | |
1151 | /* FIXME: At some point we need to add VFP register names. */ | |
1152 | /* Array terminator. */ | |
252b5132 RH |
1153 | {NULL, 0} |
1154 | }; | |
1155 | ||
92a66162 DL |
1156 | #define BAD_ARGS _("Bad arguments to instruction") |
1157 | #define BAD_PC _("r15 not allowed here") | |
1158 | #define BAD_FLAGS _("Instruction should not have flags") | |
1159 | #define BAD_COND _("Instruction is not conditional") | |
077b8428 | 1160 | #define ERR_NO_ACCUM _("acc0 expected") |
252b5132 | 1161 | |
d78c7dca NC |
1162 | static struct hash_control * arm_ops_hsh = NULL; |
1163 | static struct hash_control * arm_tops_hsh = NULL; | |
1164 | static struct hash_control * arm_cond_hsh = NULL; | |
1165 | static struct hash_control * arm_shift_hsh = NULL; | |
1166 | static struct hash_control * arm_reg_hsh = NULL; | |
1167 | static struct hash_control * arm_psr_hsh = NULL; | |
252b5132 RH |
1168 | |
1169 | /* This table describes all the machine specific pseudo-ops the assembler | |
1170 | has to support. The fields are: | |
ec9991dc NC |
1171 | pseudo-op name without dot |
1172 | function to call to execute this pseudo-op | |
1173 | Integer arg to pass to the function. */ | |
252b5132 RH |
1174 | |
1175 | static void s_req PARAMS ((int)); | |
1176 | static void s_align PARAMS ((int)); | |
1177 | static void s_bss PARAMS ((int)); | |
1178 | static void s_even PARAMS ((int)); | |
1179 | static void s_ltorg PARAMS ((int)); | |
1180 | static void s_arm PARAMS ((int)); | |
1181 | static void s_thumb PARAMS ((int)); | |
1182 | static void s_code PARAMS ((int)); | |
1183 | static void s_force_thumb PARAMS ((int)); | |
1184 | static void s_thumb_func PARAMS ((int)); | |
fed881b1 NC |
1185 | static void s_thumb_set PARAMS ((int)); |
1186 | static void arm_s_text PARAMS ((int)); | |
1187 | static void arm_s_data PARAMS ((int)); | |
252b5132 | 1188 | #ifdef OBJ_ELF |
fed881b1 | 1189 | static void arm_s_section PARAMS ((int)); |
252b5132 RH |
1190 | static void s_arm_elf_cons PARAMS ((int)); |
1191 | #endif | |
1192 | ||
1193 | static int my_get_expression PARAMS ((expressionS *, char **)); | |
1194 | ||
1195 | CONST pseudo_typeS md_pseudo_table[] = | |
1196 | { | |
d78c7dca NC |
1197 | /* Never called becasue '.req' does not start line. */ |
1198 | { "req", s_req, 0 }, | |
fed881b1 NC |
1199 | { "bss", s_bss, 0 }, |
1200 | { "align", s_align, 0 }, | |
1201 | { "arm", s_arm, 0 }, | |
1202 | { "thumb", s_thumb, 0 }, | |
1203 | { "code", s_code, 0 }, | |
1204 | { "force_thumb", s_force_thumb, 0 }, | |
1205 | { "thumb_func", s_thumb_func, 0 }, | |
1206 | { "thumb_set", s_thumb_set, 0 }, | |
1207 | { "even", s_even, 0 }, | |
1208 | { "ltorg", s_ltorg, 0 }, | |
1209 | { "pool", s_ltorg, 0 }, | |
1210 | /* Allow for the effect of section changes. */ | |
1211 | { "text", arm_s_text, 0 }, | |
1212 | { "data", arm_s_data, 0 }, | |
28e4f854 | 1213 | #ifdef OBJ_ELF |
fed881b1 NC |
1214 | { "section", arm_s_section, 0 }, |
1215 | { "section.s", arm_s_section, 0 }, | |
1216 | { "sect", arm_s_section, 0 }, | |
1217 | { "sect.s", arm_s_section, 0 }, | |
1218 | { "word", s_arm_elf_cons, 4 }, | |
1219 | { "long", s_arm_elf_cons, 4 }, | |
8179bd9b NC |
1220 | { "file", dwarf2_directive_file, 0 }, |
1221 | { "loc", dwarf2_directive_loc, 0 }, | |
252b5132 | 1222 | #else |
fed881b1 | 1223 | { "word", cons, 4}, |
252b5132 | 1224 | #endif |
fed881b1 NC |
1225 | { "extend", float_cons, 'x' }, |
1226 | { "ldouble", float_cons, 'x' }, | |
1227 | { "packed", float_cons, 'p' }, | |
1228 | { 0, 0, 0 } | |
252b5132 RH |
1229 | }; |
1230 | ||
1231 | /* Stuff needed to resolve the label ambiguity | |
1232 | As: | |
1233 | ... | |
1234 | label: <insn> | |
1235 | may differ from: | |
1236 | ... | |
1237 | label: | |
1238 | <insn> | |
1239 | */ | |
1240 | ||
d78c7dca | 1241 | symbolS * last_label_seen; |
252b5132 RH |
1242 | static int label_is_thumb_function_name = false; |
1243 | ||
28e4f854 | 1244 | /* Literal stuff. */ |
252b5132 RH |
1245 | |
1246 | #define MAX_LITERAL_POOL_SIZE 1024 | |
1247 | ||
1248 | typedef struct literalS | |
1249 | { | |
28e4f854 | 1250 | struct expressionS exp; |
d78c7dca | 1251 | struct arm_it * inst; |
252b5132 RH |
1252 | } literalT; |
1253 | ||
28e4f854 KH |
1254 | literalT literals[MAX_LITERAL_POOL_SIZE]; |
1255 | ||
1256 | /* Next free entry in the pool. */ | |
1257 | int next_literal_pool_place = 0; | |
1258 | ||
1259 | /* Next literal pool number. */ | |
1260 | int lit_pool_num = 1; | |
1261 | ||
d78c7dca | 1262 | symbolS * current_poolP = NULL; |
252b5132 RH |
1263 | |
1264 | static int | |
1265 | add_to_lit_pool () | |
1266 | { | |
1267 | int lit_count = 0; | |
1268 | ||
1269 | if (current_poolP == NULL) | |
174419c1 ILT |
1270 | current_poolP = symbol_create (FAKE_LABEL_NAME, undefined_section, |
1271 | (valueT) 0, &zero_address_frag); | |
252b5132 | 1272 | |
ec9991dc | 1273 | /* Check if this literal value is already in the pool: */ |
252b5132 RH |
1274 | while (lit_count < next_literal_pool_place) |
1275 | { | |
1276 | if (literals[lit_count].exp.X_op == inst.reloc.exp.X_op | |
28e4f854 KH |
1277 | && inst.reloc.exp.X_op == O_constant |
1278 | && (literals[lit_count].exp.X_add_number | |
1279 | == inst.reloc.exp.X_add_number) | |
1280 | && literals[lit_count].exp.X_unsigned == inst.reloc.exp.X_unsigned) | |
1281 | break; | |
252b5132 RH |
1282 | lit_count++; |
1283 | } | |
1284 | ||
28e4f854 | 1285 | if (lit_count == next_literal_pool_place) /* New entry. */ |
252b5132 RH |
1286 | { |
1287 | if (next_literal_pool_place > MAX_LITERAL_POOL_SIZE) | |
28e4f854 KH |
1288 | { |
1289 | inst.error = _("Literal Pool Overflow"); | |
1290 | return FAIL; | |
1291 | } | |
252b5132 RH |
1292 | |
1293 | literals[next_literal_pool_place].exp = inst.reloc.exp; | |
1294 | lit_count = next_literal_pool_place++; | |
1295 | } | |
1296 | ||
1297 | inst.reloc.exp.X_op = O_symbol; | |
1298 | inst.reloc.exp.X_add_number = (lit_count) * 4 - 8; | |
1299 | inst.reloc.exp.X_add_symbol = current_poolP; | |
1300 | ||
1301 | return SUCCESS; | |
1302 | } | |
28e4f854 | 1303 | |
252b5132 RH |
1304 | /* Can't use symbol_new here, so have to create a symbol and then at |
1305 | a later date assign it a value. Thats what these functions do. */ | |
28e4f854 | 1306 | |
252b5132 RH |
1307 | static void |
1308 | symbol_locate (symbolP, name, segment, valu, frag) | |
1dab94dd | 1309 | symbolS * symbolP; |
d78c7dca NC |
1310 | CONST char * name; /* It is copied, the caller can modify. */ |
1311 | segT segment; /* Segment identifier (SEG_<something>). */ | |
1312 | valueT valu; /* Symbol value. */ | |
1313 | fragS * frag; /* Associated fragment. */ | |
252b5132 RH |
1314 | { |
1315 | unsigned int name_length; | |
d78c7dca | 1316 | char * preserved_copy_of_name; |
252b5132 | 1317 | |
d78c7dca | 1318 | name_length = strlen (name) + 1; /* +1 for \0. */ |
252b5132 RH |
1319 | obstack_grow (¬es, name, name_length); |
1320 | preserved_copy_of_name = obstack_finish (¬es); | |
1321 | #ifdef STRIP_UNDERSCORE | |
1322 | if (preserved_copy_of_name[0] == '_') | |
1323 | preserved_copy_of_name++; | |
1324 | #endif | |
1325 | ||
1326 | #ifdef tc_canonicalize_symbol_name | |
1327 | preserved_copy_of_name = | |
1328 | tc_canonicalize_symbol_name (preserved_copy_of_name); | |
1329 | #endif | |
1330 | ||
1331 | S_SET_NAME (symbolP, preserved_copy_of_name); | |
1332 | ||
1333 | S_SET_SEGMENT (symbolP, segment); | |
1334 | S_SET_VALUE (symbolP, valu); | |
1335 | symbol_clear_list_pointers(symbolP); | |
1336 | ||
174419c1 | 1337 | symbol_set_frag (symbolP, frag); |
252b5132 RH |
1338 | |
1339 | /* Link to end of symbol chain. */ | |
1340 | { | |
1341 | extern int symbol_table_frozen; | |
1342 | if (symbol_table_frozen) | |
1343 | abort (); | |
1344 | } | |
1345 | ||
d78c7dca | 1346 | symbol_append (symbolP, symbol_lastP, & symbol_rootP, & symbol_lastP); |
252b5132 RH |
1347 | |
1348 | obj_symbol_new_hook (symbolP); | |
1349 | ||
1350 | #ifdef tc_symbol_new_hook | |
1351 | tc_symbol_new_hook (symbolP); | |
1352 | #endif | |
28e4f854 | 1353 | |
252b5132 RH |
1354 | #ifdef DEBUG_SYMS |
1355 | verify_symbol_chain (symbol_rootP, symbol_lastP); | |
28e4f854 | 1356 | #endif /* DEBUG_SYMS */ |
252b5132 RH |
1357 | } |
1358 | ||
28e4f854 KH |
1359 | /* Check that an immediate is valid. |
1360 | If so, convert it to the right format. */ | |
1361 | ||
252b5132 RH |
1362 | static unsigned int |
1363 | validate_immediate (val) | |
1364 | unsigned int val; | |
1365 | { | |
1366 | unsigned int a; | |
1367 | unsigned int i; | |
28e4f854 | 1368 | |
252b5132 | 1369 | #define rotate_left(v, n) (v << n | v >> (32 - n)) |
28e4f854 | 1370 | |
252b5132 RH |
1371 | for (i = 0; i < 32; i += 2) |
1372 | if ((a = rotate_left (val, i)) <= 0xff) | |
d78c7dca | 1373 | return a | (i << 7); /* 12-bit pack: [shift-cnt,const]. */ |
28e4f854 | 1374 | |
252b5132 RH |
1375 | return FAIL; |
1376 | } | |
1377 | ||
49a5575c NC |
1378 | /* Check to see if an immediate can be computed as two seperate immediate |
1379 | values, added together. We already know that this value cannot be | |
1380 | computed by just one ARM instruction. */ | |
28e4f854 | 1381 | |
49a5575c NC |
1382 | static unsigned int |
1383 | validate_immediate_twopart (val, highpart) | |
d78c7dca NC |
1384 | unsigned int val; |
1385 | unsigned int * highpart; | |
49a5575c NC |
1386 | { |
1387 | unsigned int a; | |
1388 | unsigned int i; | |
28e4f854 | 1389 | |
49a5575c NC |
1390 | for (i = 0; i < 32; i += 2) |
1391 | if (((a = rotate_left (val, i)) & 0xff) != 0) | |
1392 | { | |
1393 | if (a & 0xff00) | |
1394 | { | |
d78c7dca | 1395 | if (a & ~ 0xffff) |
49a5575c | 1396 | continue; |
d78c7dca | 1397 | * highpart = (a >> 8) | ((i + 24) << 7); |
49a5575c NC |
1398 | } |
1399 | else if (a & 0xff0000) | |
1400 | { | |
1401 | if (a & 0xff000000) | |
1402 | continue; | |
d78c7dca | 1403 | * highpart = (a >> 16) | ((i + 16) << 7); |
49a5575c NC |
1404 | } |
1405 | else | |
1406 | { | |
1407 | assert (a & 0xff000000); | |
d78c7dca | 1408 | * highpart = (a >> 24) | ((i + 8) << 7); |
49a5575c NC |
1409 | } |
1410 | ||
1411 | return (a & 0xff) | (i << 7); | |
1412 | } | |
28e4f854 | 1413 | |
49a5575c NC |
1414 | return FAIL; |
1415 | } | |
1416 | ||
252b5132 RH |
1417 | static int |
1418 | validate_offset_imm (val, hwse) | |
276b1dc2 | 1419 | unsigned int val; |
252b5132 RH |
1420 | int hwse; |
1421 | { | |
276b1dc2 | 1422 | if ((hwse && val > 255) || val > 4095) |
28e4f854 | 1423 | return FAIL; |
252b5132 RH |
1424 | return val; |
1425 | } | |
1426 | ||
252b5132 RH |
1427 | static void |
1428 | s_req (a) | |
684b81fa | 1429 | int a ATTRIBUTE_UNUSED; |
252b5132 RH |
1430 | { |
1431 | as_bad (_("Invalid syntax for .req directive.")); | |
1432 | } | |
1433 | ||
1434 | static void | |
1435 | s_bss (ignore) | |
684b81fa | 1436 | int ignore ATTRIBUTE_UNUSED; |
252b5132 RH |
1437 | { |
1438 | /* We don't support putting frags in the BSS segment, we fake it by | |
28e4f854 | 1439 | marking in_bss, then looking at s_skip for clues. */ |
252b5132 RH |
1440 | subseg_set (bss_section, 0); |
1441 | demand_empty_rest_of_line (); | |
1442 | } | |
1443 | ||
1444 | static void | |
1445 | s_even (ignore) | |
684b81fa | 1446 | int ignore ATTRIBUTE_UNUSED; |
252b5132 | 1447 | { |
28e4f854 KH |
1448 | /* Never make frag if expect extra pass. */ |
1449 | if (!need_pass_2) | |
252b5132 | 1450 | frag_align (1, 0, 0); |
28e4f854 | 1451 | |
252b5132 | 1452 | record_alignment (now_seg, 1); |
28e4f854 | 1453 | |
252b5132 RH |
1454 | demand_empty_rest_of_line (); |
1455 | } | |
1456 | ||
1457 | static void | |
fed881b1 | 1458 | s_ltorg (ignored) |
684b81fa | 1459 | int ignored ATTRIBUTE_UNUSED; |
252b5132 RH |
1460 | { |
1461 | int lit_count = 0; | |
1462 | char sym_name[20]; | |
1463 | ||
1464 | if (current_poolP == NULL) | |
fed881b1 | 1465 | return; |
252b5132 | 1466 | |
28e4f854 KH |
1467 | /* Align pool as you have word accesses. |
1468 | Only make a frag if we have to. */ | |
252b5132 RH |
1469 | if (!need_pass_2) |
1470 | frag_align (2, 0, 0); | |
1471 | ||
1472 | record_alignment (now_seg, 2); | |
1473 | ||
252b5132 RH |
1474 | sprintf (sym_name, "$$lit_\002%x", lit_pool_num++); |
1475 | ||
1476 | symbol_locate (current_poolP, sym_name, now_seg, | |
1477 | (valueT) frag_now_fix (), frag_now); | |
1478 | symbol_table_insert (current_poolP); | |
1479 | ||
1480 | ARM_SET_THUMB (current_poolP, thumb_mode); | |
28e4f854 | 1481 | |
252b5132 RH |
1482 | #if defined OBJ_COFF || defined OBJ_ELF |
1483 | ARM_SET_INTERWORK (current_poolP, support_interwork); | |
1484 | #endif | |
28e4f854 | 1485 | |
252b5132 | 1486 | while (lit_count < next_literal_pool_place) |
ec9991dc | 1487 | /* First output the expression in the instruction to the pool. */ |
28e4f854 | 1488 | emit_expr (&(literals[lit_count++].exp), 4); /* .word */ |
252b5132 RH |
1489 | |
1490 | next_literal_pool_place = 0; | |
1491 | current_poolP = NULL; | |
1492 | } | |
1493 | ||
28e4f854 KH |
1494 | /* Same as s_align_ptwo but align 0 => align 2. */ |
1495 | ||
252b5132 | 1496 | static void |
28e4f854 | 1497 | s_align (unused) |
684b81fa | 1498 | int unused ATTRIBUTE_UNUSED; |
252b5132 RH |
1499 | { |
1500 | register int temp; | |
1501 | register long temp_fill; | |
1502 | long max_alignment = 15; | |
1503 | ||
1504 | temp = get_absolute_expression (); | |
1505 | if (temp > max_alignment) | |
1506 | as_bad (_("Alignment too large: %d. assumed."), temp = max_alignment); | |
1507 | else if (temp < 0) | |
1508 | { | |
1509 | as_bad (_("Alignment negative. 0 assumed.")); | |
1510 | temp = 0; | |
1511 | } | |
1512 | ||
1513 | if (*input_line_pointer == ',') | |
1514 | { | |
1515 | input_line_pointer++; | |
1516 | temp_fill = get_absolute_expression (); | |
1517 | } | |
1518 | else | |
1519 | temp_fill = 0; | |
1520 | ||
1521 | if (!temp) | |
1522 | temp = 2; | |
1523 | ||
28e4f854 | 1524 | /* Only make a frag if we HAVE to. */ |
252b5132 RH |
1525 | if (temp && !need_pass_2) |
1526 | frag_align (temp, (int) temp_fill, 0); | |
1527 | demand_empty_rest_of_line (); | |
1528 | ||
1529 | record_alignment (now_seg, temp); | |
1530 | } | |
1531 | ||
1532 | static void | |
1533 | s_force_thumb (ignore) | |
684b81fa | 1534 | int ignore ATTRIBUTE_UNUSED; |
252b5132 RH |
1535 | { |
1536 | /* If we are not already in thumb mode go into it, EVEN if | |
1537 | the target processor does not support thumb instructions. | |
1538 | This is used by gcc/config/arm/lib1funcs.asm for example | |
1539 | to compile interworking support functions even if the | |
1540 | target processor should not support interworking. */ | |
252b5132 RH |
1541 | if (! thumb_mode) |
1542 | { | |
a64bcdd8 | 1543 | thumb_mode = 2; |
28e4f854 | 1544 | |
252b5132 RH |
1545 | record_alignment (now_seg, 1); |
1546 | } | |
28e4f854 | 1547 | |
252b5132 RH |
1548 | demand_empty_rest_of_line (); |
1549 | } | |
1550 | ||
1551 | static void | |
1552 | s_thumb_func (ignore) | |
684b81fa | 1553 | int ignore ATTRIBUTE_UNUSED; |
252b5132 | 1554 | { |
1994a7c7 NC |
1555 | if (! thumb_mode) |
1556 | opcode_select (16); | |
1557 | ||
252b5132 RH |
1558 | /* The following label is the name/address of the start of a Thumb function. |
1559 | We need to know this for the interworking support. */ | |
252b5132 | 1560 | label_is_thumb_function_name = true; |
1994a7c7 | 1561 | |
252b5132 RH |
1562 | demand_empty_rest_of_line (); |
1563 | } | |
1564 | ||
fed881b1 NC |
1565 | /* Perform a .set directive, but also mark the alias as |
1566 | being a thumb function. */ | |
1567 | ||
1568 | static void | |
1569 | s_thumb_set (equiv) | |
1570 | int equiv; | |
1571 | { | |
1572 | /* XXX the following is a duplicate of the code for s_set() in read.c | |
1573 | We cannot just call that code as we need to get at the symbol that | |
1574 | is created. */ | |
d78c7dca NC |
1575 | register char * name; |
1576 | register char delim; | |
1577 | register char * end_name; | |
1578 | register symbolS * symbolP; | |
1579 | ||
1580 | /* Especial apologies for the random logic: | |
1581 | This just grew, and could be parsed much more simply! | |
1582 | Dean - in haste. */ | |
fed881b1 NC |
1583 | name = input_line_pointer; |
1584 | delim = get_symbol_end (); | |
1585 | end_name = input_line_pointer; | |
1586 | *end_name = delim; | |
28e4f854 | 1587 | |
fed881b1 NC |
1588 | SKIP_WHITESPACE (); |
1589 | ||
1590 | if (*input_line_pointer != ',') | |
1591 | { | |
1592 | *end_name = 0; | |
1593 | as_bad (_("Expected comma after name \"%s\""), name); | |
1594 | *end_name = delim; | |
1595 | ignore_rest_of_line (); | |
1596 | return; | |
1597 | } | |
1598 | ||
1599 | input_line_pointer++; | |
1600 | *end_name = 0; | |
1601 | ||
1602 | if (name[0] == '.' && name[1] == '\0') | |
1603 | { | |
28e4f854 | 1604 | /* XXX - this should not happen to .thumb_set. */ |
fed881b1 NC |
1605 | abort (); |
1606 | } | |
1607 | ||
1608 | if ((symbolP = symbol_find (name)) == NULL | |
1609 | && (symbolP = md_undefined_symbol (name)) == NULL) | |
1610 | { | |
1611 | #ifndef NO_LISTING | |
1612 | /* When doing symbol listings, play games with dummy fragments living | |
1613 | outside the normal fragment chain to record the file and line info | |
1614 | for this symbol. */ | |
1615 | if (listing & LISTING_SYMBOLS) | |
1616 | { | |
d78c7dca NC |
1617 | extern struct list_info_struct * listing_tail; |
1618 | fragS * dummy_frag = (fragS *) xmalloc (sizeof (fragS)); | |
1dab94dd | 1619 | |
28e4f854 | 1620 | memset (dummy_frag, 0, sizeof (fragS)); |
fed881b1 NC |
1621 | dummy_frag->fr_type = rs_fill; |
1622 | dummy_frag->line = listing_tail; | |
1623 | symbolP = symbol_new (name, undefined_section, 0, dummy_frag); | |
1624 | dummy_frag->fr_symbol = symbolP; | |
1625 | } | |
1626 | else | |
1627 | #endif | |
28e4f854 KH |
1628 | symbolP = symbol_new (name, undefined_section, 0, &zero_address_frag); |
1629 | ||
fed881b1 | 1630 | #ifdef OBJ_COFF |
28e4f854 | 1631 | /* "set" symbols are local unless otherwise specified. */ |
fed881b1 | 1632 | SF_SET_LOCAL (symbolP); |
28e4f854 KH |
1633 | #endif /* OBJ_COFF */ |
1634 | } /* Make a new symbol. */ | |
fed881b1 NC |
1635 | |
1636 | symbol_table_insert (symbolP); | |
1637 | ||
d78c7dca | 1638 | * end_name = delim; |
fed881b1 NC |
1639 | |
1640 | if (equiv | |
1641 | && S_IS_DEFINED (symbolP) | |
1642 | && S_GET_SEGMENT (symbolP) != reg_section) | |
1643 | as_bad (_("symbol `%s' already defined"), S_GET_NAME (symbolP)); | |
1644 | ||
1645 | pseudo_set (symbolP); | |
28e4f854 | 1646 | |
fed881b1 NC |
1647 | demand_empty_rest_of_line (); |
1648 | ||
ae5ad4ad | 1649 | /* XXX Now we come to the Thumb specific bit of code. */ |
28e4f854 | 1650 | |
fed881b1 NC |
1651 | THUMB_SET_FUNC (symbolP, 1); |
1652 | ARM_SET_THUMB (symbolP, 1); | |
92a66162 | 1653 | #if defined OBJ_ELF || defined OBJ_COFF |
fed881b1 | 1654 | ARM_SET_INTERWORK (symbolP, support_interwork); |
325188ec | 1655 | #endif |
fed881b1 NC |
1656 | } |
1657 | ||
1658 | /* If we change section we must dump the literal pool first. */ | |
28e4f854 | 1659 | |
fed881b1 NC |
1660 | static void |
1661 | arm_s_text (ignore) | |
1662 | int ignore; | |
1663 | { | |
1664 | if (now_seg != text_section) | |
1665 | s_ltorg (0); | |
28e4f854 | 1666 | |
df32bc61 NC |
1667 | #ifdef OBJ_ELF |
1668 | obj_elf_text (ignore); | |
1669 | #else | |
fed881b1 | 1670 | s_text (ignore); |
df32bc61 | 1671 | #endif |
fed881b1 NC |
1672 | } |
1673 | ||
1674 | static void | |
1675 | arm_s_data (ignore) | |
1676 | int ignore; | |
1677 | { | |
1678 | if (flag_readonly_data_in_text) | |
1679 | { | |
1680 | if (now_seg != text_section) | |
1681 | s_ltorg (0); | |
1682 | } | |
1683 | else if (now_seg != data_section) | |
1684 | s_ltorg (0); | |
28e4f854 | 1685 | |
df32bc61 NC |
1686 | #ifdef OBJ_ELF |
1687 | obj_elf_data (ignore); | |
1688 | #else | |
fed881b1 | 1689 | s_data (ignore); |
df32bc61 | 1690 | #endif |
fed881b1 NC |
1691 | } |
1692 | ||
1693 | #ifdef OBJ_ELF | |
1694 | static void | |
1695 | arm_s_section (ignore) | |
1696 | int ignore; | |
1697 | { | |
1698 | s_ltorg (0); | |
1699 | ||
1700 | obj_elf_section (ignore); | |
1701 | } | |
1702 | #endif | |
1703 | ||
252b5132 RH |
1704 | static void |
1705 | opcode_select (width) | |
1706 | int width; | |
1707 | { | |
1708 | switch (width) | |
1709 | { | |
1710 | case 16: | |
1711 | if (! thumb_mode) | |
1712 | { | |
077b8428 | 1713 | if (! (cpu_variant & ARM_EXT_THUMB)) |
252b5132 | 1714 | as_bad (_("selected processor does not support THUMB opcodes")); |
d78c7dca | 1715 | |
252b5132 | 1716 | thumb_mode = 1; |
28e4f854 KH |
1717 | /* No need to force the alignment, since we will have been |
1718 | coming from ARM mode, which is word-aligned. */ | |
1719 | record_alignment (now_seg, 1); | |
252b5132 RH |
1720 | } |
1721 | break; | |
1722 | ||
1723 | case 32: | |
1724 | if (thumb_mode) | |
1725 | { | |
077b8428 | 1726 | if ((cpu_variant & ARM_ANY) == ARM_EXT_THUMB) |
252b5132 | 1727 | as_bad (_("selected processor does not support ARM opcodes")); |
d78c7dca | 1728 | |
252b5132 | 1729 | thumb_mode = 0; |
d78c7dca | 1730 | |
28e4f854 | 1731 | if (!need_pass_2) |
d78c7dca NC |
1732 | frag_align (2, 0, 0); |
1733 | ||
1734 | record_alignment (now_seg, 1); | |
252b5132 RH |
1735 | } |
1736 | break; | |
1737 | ||
1738 | default: | |
1739 | as_bad (_("invalid instruction size selected (%d)"), width); | |
1740 | } | |
1741 | } | |
1742 | ||
1743 | static void | |
1744 | s_arm (ignore) | |
684b81fa | 1745 | int ignore ATTRIBUTE_UNUSED; |
252b5132 RH |
1746 | { |
1747 | opcode_select (32); | |
1748 | demand_empty_rest_of_line (); | |
1749 | } | |
1750 | ||
1751 | static void | |
1752 | s_thumb (ignore) | |
684b81fa | 1753 | int ignore ATTRIBUTE_UNUSED; |
252b5132 RH |
1754 | { |
1755 | opcode_select (16); | |
1756 | demand_empty_rest_of_line (); | |
1757 | } | |
1758 | ||
1759 | static void | |
1760 | s_code (unused) | |
684b81fa | 1761 | int unused ATTRIBUTE_UNUSED; |
252b5132 RH |
1762 | { |
1763 | register int temp; | |
1764 | ||
1765 | temp = get_absolute_expression (); | |
1766 | switch (temp) | |
1767 | { | |
1768 | case 16: | |
1769 | case 32: | |
1770 | opcode_select (temp); | |
1771 | break; | |
1772 | ||
1773 | default: | |
1774 | as_bad (_("invalid operand to .code directive (%d) (expecting 16 or 32)"), temp); | |
1775 | } | |
1776 | } | |
1777 | ||
1778 | static void | |
1779 | end_of_line (str) | |
d78c7dca | 1780 | char * str; |
252b5132 | 1781 | { |
ae5ad4ad | 1782 | skip_whitespace (str); |
252b5132 | 1783 | |
d78c7dca | 1784 | if (* str != '\0') |
252b5132 RH |
1785 | inst.error = _("Garbage following instruction"); |
1786 | } | |
1787 | ||
1788 | static int | |
1789 | skip_past_comma (str) | |
d78c7dca | 1790 | char ** str; |
252b5132 | 1791 | { |
d78c7dca | 1792 | char * p = * str, c; |
252b5132 | 1793 | int comma = 0; |
28e4f854 | 1794 | |
252b5132 RH |
1795 | while ((c = *p) == ' ' || c == ',') |
1796 | { | |
1797 | p++; | |
1798 | if (c == ',' && comma++) | |
1799 | return FAIL; | |
1800 | } | |
1801 | ||
1802 | if (c == '\0') | |
1803 | return FAIL; | |
1804 | ||
1805 | *str = p; | |
1806 | return comma ? SUCCESS : FAIL; | |
1807 | } | |
1808 | ||
acb56623 | 1809 | /* A standard register must be given at this point. |
28e4f854 | 1810 | SHIFT is the place to put it in inst.instruction. |
d78c7dca NC |
1811 | Restores input start point on error. |
1812 | Returns the reg#, or FAIL. */ | |
28e4f854 | 1813 | |
252b5132 RH |
1814 | static int |
1815 | reg_required_here (str, shift) | |
d78c7dca NC |
1816 | char ** str; |
1817 | int shift; | |
252b5132 | 1818 | { |
d78c7dca NC |
1819 | static char buff [128]; /* XXX */ |
1820 | int reg; | |
1821 | char * start = * str; | |
252b5132 RH |
1822 | |
1823 | if ((reg = arm_reg_parse (str)) != FAIL && int_register (reg)) | |
1824 | { | |
1825 | if (shift >= 0) | |
1826 | inst.instruction |= reg << shift; | |
1827 | return reg; | |
1828 | } | |
1829 | ||
1830 | /* Restore the start point, we may have got a reg of the wrong class. */ | |
1831 | *str = start; | |
28e4f854 | 1832 | |
252b5132 | 1833 | /* In the few cases where we might be able to accept something else |
ae5ad4ad | 1834 | this error can be overridden. */ |
252b5132 RH |
1835 | sprintf (buff, _("Register expected, not '%.100s'"), start); |
1836 | inst.error = buff; | |
1837 | ||
1838 | return FAIL; | |
1839 | } | |
1840 | ||
322f2c45 NC |
1841 | static CONST struct asm_psr * |
1842 | arm_psr_parse (ccp) | |
d78c7dca | 1843 | register char ** ccp; |
322f2c45 | 1844 | { |
d78c7dca NC |
1845 | char * start = * ccp; |
1846 | char c; | |
1847 | char * p; | |
1848 | CONST struct asm_psr * psr; | |
322f2c45 NC |
1849 | |
1850 | p = start; | |
1851 | ||
1852 | /* Skip to the end of the next word in the input stream. */ | |
1853 | do | |
1854 | { | |
1855 | c = *p++; | |
1856 | } | |
1857 | while (isalpha (c) || c == '_'); | |
1858 | ||
1859 | /* Terminate the word. */ | |
1860 | *--p = 0; | |
1861 | ||
bf1b5881 AH |
1862 | /* CPSR's and SPSR's can now be lowercase. This is just a convenience |
1863 | feature for ease of use and backwards compatibility. */ | |
1864 | if (!strncmp (start, "cpsr", 4)) | |
1865 | strncpy (start, "CPSR", 4); | |
1866 | else if (!strncmp (start, "spsr", 4)) | |
1867 | strncpy (start, "SPSR", 4); | |
1868 | ||
322f2c45 NC |
1869 | /* Now locate the word in the psr hash table. */ |
1870 | psr = (CONST struct asm_psr *) hash_find (arm_psr_hsh, start); | |
1871 | ||
1872 | /* Restore the input stream. */ | |
1873 | *p = c; | |
1874 | ||
1875 | /* If we found a valid match, advance the | |
1876 | stream pointer past the end of the word. */ | |
1877 | *ccp = p; | |
1878 | ||
1879 | return psr; | |
1880 | } | |
1881 | ||
1882 | /* Parse the input looking for a PSR flag. */ | |
28e4f854 | 1883 | |
252b5132 | 1884 | static int |
322f2c45 | 1885 | psr_required_here (str) |
d78c7dca | 1886 | char ** str; |
252b5132 | 1887 | { |
d78c7dca NC |
1888 | char * start = * str; |
1889 | CONST struct asm_psr * psr; | |
28e4f854 | 1890 | |
322f2c45 NC |
1891 | psr = arm_psr_parse (str); |
1892 | ||
1893 | if (psr) | |
252b5132 | 1894 | { |
322f2c45 NC |
1895 | /* If this is the SPSR that is being modified, set the R bit. */ |
1896 | if (! psr->cpsr) | |
1897 | inst.instruction |= SPSR_BIT; | |
1898 | ||
1899 | /* Set the psr flags in the MSR instruction. */ | |
1900 | inst.instruction |= psr->field << PSR_SHIFT; | |
28e4f854 | 1901 | |
252b5132 RH |
1902 | return SUCCESS; |
1903 | } | |
1904 | ||
322f2c45 NC |
1905 | /* In the few cases where we might be able to accept |
1906 | something else this error can be overridden. */ | |
1907 | inst.error = _("flag for {c}psr instruction expected"); | |
252b5132 RH |
1908 | |
1909 | /* Restore the start point. */ | |
1910 | *str = start; | |
1911 | return FAIL; | |
1912 | } | |
1913 | ||
1914 | static int | |
1915 | co_proc_number (str) | |
d78c7dca | 1916 | char ** str; |
252b5132 RH |
1917 | { |
1918 | int processor, pchar; | |
1919 | ||
d78c7dca | 1920 | skip_whitespace (* str); |
252b5132 RH |
1921 | |
1922 | /* The data sheet seems to imply that just a number on its own is valid | |
1923 | here, but the RISC iX assembler seems to accept a prefix 'p'. We will | |
1924 | accept either. */ | |
1925 | if (**str == 'p' || **str == 'P') | |
1926 | (*str)++; | |
1927 | ||
1928 | pchar = *(*str)++; | |
1929 | if (pchar >= '0' && pchar <= '9') | |
1930 | { | |
1931 | processor = pchar - '0'; | |
1932 | if (**str >= '0' && **str <= '9') | |
1933 | { | |
1934 | processor = processor * 10 + *(*str)++ - '0'; | |
1935 | if (processor > 15) | |
1936 | { | |
1937 | inst.error = _("Illegal co-processor number"); | |
1938 | return FAIL; | |
1939 | } | |
1940 | } | |
1941 | } | |
1942 | else | |
1943 | { | |
1944 | inst.error = _("Bad or missing co-processor number"); | |
1945 | return FAIL; | |
1946 | } | |
1947 | ||
1948 | inst.instruction |= processor << 8; | |
1949 | return SUCCESS; | |
1950 | } | |
1951 | ||
1952 | static int | |
1953 | cp_opc_expr (str, where, length) | |
1954 | char ** str; | |
1955 | int where; | |
1956 | int length; | |
1957 | { | |
1958 | expressionS expr; | |
1959 | ||
d78c7dca | 1960 | skip_whitespace (* str); |
252b5132 RH |
1961 | |
1962 | memset (&expr, '\0', sizeof (expr)); | |
1963 | ||
1964 | if (my_get_expression (&expr, str)) | |
1965 | return FAIL; | |
1966 | if (expr.X_op != O_constant) | |
1967 | { | |
1968 | inst.error = _("bad or missing expression"); | |
1969 | return FAIL; | |
1970 | } | |
1971 | ||
1972 | if ((expr.X_add_number & ((1 << length) - 1)) != expr.X_add_number) | |
1973 | { | |
1974 | inst.error = _("immediate co-processor expression too large"); | |
1975 | return FAIL; | |
1976 | } | |
1977 | ||
1978 | inst.instruction |= expr.X_add_number << where; | |
1979 | return SUCCESS; | |
1980 | } | |
1981 | ||
1982 | static int | |
1983 | cp_reg_required_here (str, where) | |
d78c7dca NC |
1984 | char ** str; |
1985 | int where; | |
252b5132 | 1986 | { |
d78c7dca NC |
1987 | int reg; |
1988 | char * start = *str; | |
252b5132 RH |
1989 | |
1990 | if ((reg = arm_reg_parse (str)) != FAIL && cp_register (reg)) | |
1991 | { | |
1992 | reg &= 15; | |
1993 | inst.instruction |= reg << where; | |
1994 | return reg; | |
1995 | } | |
1996 | ||
1997 | /* In the few cases where we might be able to accept something else | |
ae5ad4ad | 1998 | this error can be overridden. */ |
252b5132 RH |
1999 | inst.error = _("Co-processor register expected"); |
2000 | ||
ae5ad4ad | 2001 | /* Restore the start point. */ |
252b5132 RH |
2002 | *str = start; |
2003 | return FAIL; | |
2004 | } | |
2005 | ||
2006 | static int | |
2007 | fp_reg_required_here (str, where) | |
d78c7dca NC |
2008 | char ** str; |
2009 | int where; | |
252b5132 | 2010 | { |
d78c7dca NC |
2011 | int reg; |
2012 | char * start = * str; | |
252b5132 RH |
2013 | |
2014 | if ((reg = arm_reg_parse (str)) != FAIL && fp_register (reg)) | |
2015 | { | |
2016 | reg &= 7; | |
2017 | inst.instruction |= reg << where; | |
2018 | return reg; | |
2019 | } | |
2020 | ||
2021 | /* In the few cases where we might be able to accept something else | |
ae5ad4ad | 2022 | this error can be overridden. */ |
252b5132 RH |
2023 | inst.error = _("Floating point register expected"); |
2024 | ||
ae5ad4ad | 2025 | /* Restore the start point. */ |
252b5132 RH |
2026 | *str = start; |
2027 | return FAIL; | |
2028 | } | |
2029 | ||
2030 | static int | |
2031 | cp_address_offset (str) | |
d78c7dca | 2032 | char ** str; |
252b5132 RH |
2033 | { |
2034 | int offset; | |
2035 | ||
d78c7dca | 2036 | skip_whitespace (* str); |
252b5132 RH |
2037 | |
2038 | if (! is_immediate_prefix (**str)) | |
2039 | { | |
2040 | inst.error = _("immediate expression expected"); | |
2041 | return FAIL; | |
2042 | } | |
2043 | ||
2044 | (*str)++; | |
28e4f854 | 2045 | |
d78c7dca | 2046 | if (my_get_expression (& inst.reloc.exp, str)) |
252b5132 | 2047 | return FAIL; |
28e4f854 | 2048 | |
252b5132 RH |
2049 | if (inst.reloc.exp.X_op == O_constant) |
2050 | { | |
2051 | offset = inst.reloc.exp.X_add_number; | |
28e4f854 | 2052 | |
252b5132 RH |
2053 | if (offset & 3) |
2054 | { | |
2055 | inst.error = _("co-processor address must be word aligned"); | |
2056 | return FAIL; | |
2057 | } | |
2058 | ||
2059 | if (offset > 1023 || offset < -1023) | |
2060 | { | |
2061 | inst.error = _("offset too large"); | |
2062 | return FAIL; | |
2063 | } | |
2064 | ||
2065 | if (offset >= 0) | |
2066 | inst.instruction |= INDEX_UP; | |
2067 | else | |
2068 | offset = -offset; | |
2069 | ||
2070 | inst.instruction |= offset >> 2; | |
2071 | } | |
2072 | else | |
2073 | inst.reloc.type = BFD_RELOC_ARM_CP_OFF_IMM; | |
2074 | ||
2075 | return SUCCESS; | |
2076 | } | |
2077 | ||
2078 | static int | |
2079 | cp_address_required_here (str) | |
d78c7dca | 2080 | char ** str; |
252b5132 | 2081 | { |
d78c7dca NC |
2082 | char * p = * str; |
2083 | int pre_inc = 0; | |
2084 | int write_back = 0; | |
252b5132 RH |
2085 | |
2086 | if (*p == '[') | |
2087 | { | |
2088 | int reg; | |
2089 | ||
2090 | p++; | |
ae5ad4ad | 2091 | skip_whitespace (p); |
252b5132 | 2092 | |
d78c7dca | 2093 | if ((reg = reg_required_here (& p, 16)) == FAIL) |
252b5132 RH |
2094 | return FAIL; |
2095 | ||
ae5ad4ad | 2096 | skip_whitespace (p); |
252b5132 RH |
2097 | |
2098 | if (*p == ']') | |
2099 | { | |
2100 | p++; | |
28e4f854 | 2101 | |
d78c7dca | 2102 | if (skip_past_comma (& p) == SUCCESS) |
252b5132 | 2103 | { |
28e4f854 | 2104 | /* [Rn], #expr */ |
252b5132 | 2105 | write_back = WRITE_BACK; |
28e4f854 | 2106 | |
252b5132 RH |
2107 | if (reg == REG_PC) |
2108 | { | |
2109 | inst.error = _("pc may not be used in post-increment"); | |
2110 | return FAIL; | |
2111 | } | |
2112 | ||
d78c7dca | 2113 | if (cp_address_offset (& p) == FAIL) |
252b5132 RH |
2114 | return FAIL; |
2115 | } | |
2116 | else | |
2117 | pre_inc = PRE_INDEX | INDEX_UP; | |
2118 | } | |
2119 | else | |
2120 | { | |
28e4f854 | 2121 | /* '['Rn, #expr']'[!] */ |
252b5132 | 2122 | |
d78c7dca | 2123 | if (skip_past_comma (& p) == FAIL) |
252b5132 RH |
2124 | { |
2125 | inst.error = _("pre-indexed expression expected"); | |
2126 | return FAIL; | |
2127 | } | |
2128 | ||
2129 | pre_inc = PRE_INDEX; | |
28e4f854 | 2130 | |
d78c7dca | 2131 | if (cp_address_offset (& p) == FAIL) |
252b5132 RH |
2132 | return FAIL; |
2133 | ||
ae5ad4ad | 2134 | skip_whitespace (p); |
252b5132 RH |
2135 | |
2136 | if (*p++ != ']') | |
2137 | { | |
2138 | inst.error = _("missing ]"); | |
2139 | return FAIL; | |
2140 | } | |
2141 | ||
ae5ad4ad | 2142 | skip_whitespace (p); |
252b5132 RH |
2143 | |
2144 | if (*p == '!') | |
2145 | { | |
2146 | if (reg == REG_PC) | |
2147 | { | |
2148 | inst.error = _("pc may not be used with write-back"); | |
2149 | return FAIL; | |
2150 | } | |
2151 | ||
2152 | p++; | |
2153 | write_back = WRITE_BACK; | |
2154 | } | |
2155 | } | |
2156 | } | |
2157 | else | |
2158 | { | |
2159 | if (my_get_expression (&inst.reloc.exp, &p)) | |
2160 | return FAIL; | |
2161 | ||
2162 | inst.reloc.type = BFD_RELOC_ARM_CP_OFF_IMM; | |
28e4f854 | 2163 | inst.reloc.exp.X_add_number -= 8; /* PC rel adjust. */ |
252b5132 RH |
2164 | inst.reloc.pc_rel = 1; |
2165 | inst.instruction |= (REG_PC << 16); | |
2166 | pre_inc = PRE_INDEX; | |
2167 | } | |
2168 | ||
2169 | inst.instruction |= write_back | pre_inc; | |
2170 | *str = p; | |
2171 | return SUCCESS; | |
2172 | } | |
2173 | ||
2174 | static void | |
2175 | do_nop (str, flags) | |
d78c7dca | 2176 | char * str; |
252b5132 RH |
2177 | unsigned long flags; |
2178 | { | |
ae5ad4ad NC |
2179 | /* Do nothing really. */ |
2180 | inst.instruction |= flags; /* This is pointless. */ | |
252b5132 RH |
2181 | end_of_line (str); |
2182 | return; | |
2183 | } | |
2184 | ||
2185 | static void | |
2186 | do_mrs (str, flags) | |
2187 | char *str; | |
2188 | unsigned long flags; | |
2189 | { | |
a6836251 | 2190 | int skip = 0; |
28e4f854 | 2191 | |
ae5ad4ad NC |
2192 | /* Only one syntax. */ |
2193 | skip_whitespace (str); | |
252b5132 RH |
2194 | |
2195 | if (reg_required_here (&str, 12) == FAIL) | |
2196 | { | |
90ca882f | 2197 | inst.error = BAD_ARGS; |
252b5132 RH |
2198 | return; |
2199 | } | |
2200 | ||
322f2c45 | 2201 | if (skip_past_comma (&str) == FAIL) |
252b5132 | 2202 | { |
322f2c45 | 2203 | inst.error = _("comma expected after register name"); |
252b5132 RH |
2204 | return; |
2205 | } | |
2206 | ||
322f2c45 NC |
2207 | skip_whitespace (str); |
2208 | ||
d78c7dca | 2209 | if ( strcmp (str, "CPSR") == 0 |
322f2c45 | 2210 | || strcmp (str, "SPSR") == 0 |
d78c7dca | 2211 | /* Lower case versions for backwards compatability. */ |
322f2c45 NC |
2212 | || strcmp (str, "cpsr") == 0 |
2213 | || strcmp (str, "spsr") == 0) | |
a6836251 | 2214 | skip = 4; |
28e4f854 | 2215 | |
322f2c45 | 2216 | /* This is for backwards compatability with older toolchains. */ |
d78c7dca | 2217 | else if ( strcmp (str, "cpsr_all") == 0 |
322f2c45 | 2218 | || strcmp (str, "spsr_all") == 0) |
3f9dfb2c | 2219 | skip = 8; |
322f2c45 NC |
2220 | else |
2221 | { | |
2222 | inst.error = _("{C|S}PSR expected"); | |
2223 | return; | |
2224 | } | |
2225 | ||
d78c7dca | 2226 | if (* str == 's' || * str == 'S') |
322f2c45 | 2227 | inst.instruction |= SPSR_BIT; |
a6836251 | 2228 | str += skip; |
28e4f854 | 2229 | |
252b5132 RH |
2230 | inst.instruction |= flags; |
2231 | end_of_line (str); | |
252b5132 RH |
2232 | } |
2233 | ||
077b8428 NC |
2234 | /* Two possible forms: |
2235 | "{C|S}PSR_<field>, Rm", | |
2236 | "{C|S}PSR_f, #expression". */ | |
2237 | ||
2238 | static void | |
2239 | do_msr (str, flags) | |
2240 | char * str; | |
2241 | unsigned long flags; | |
2242 | { | |
2243 | skip_whitespace (str); | |
2244 | ||
2245 | if (psr_required_here (& str) == FAIL) | |
2246 | return; | |
2247 | ||
2248 | if (skip_past_comma (& str) == FAIL) | |
2249 | { | |
2250 | inst.error = _("comma missing after psr flags"); | |
2251 | return; | |
2252 | } | |
2253 | ||
2254 | skip_whitespace (str); | |
2255 | ||
2256 | if (reg_required_here (& str, 0) != FAIL) | |
2257 | { | |
2258 | inst.error = NULL; | |
2259 | inst.instruction |= flags; | |
2260 | end_of_line (str); | |
2261 | return; | |
2262 | } | |
2263 | ||
2264 | if (! is_immediate_prefix (* str)) | |
2265 | { | |
2266 | inst.error = | |
2267 | _("only a register or immediate value can follow a psr flag"); | |
2268 | return; | |
2269 | } | |
2270 | ||
2271 | str ++; | |
2272 | inst.error = NULL; | |
2273 | ||
2274 | if (my_get_expression (& inst.reloc.exp, & str)) | |
2275 | { | |
2276 | inst.error = | |
2277 | _("only a register or immediate value can follow a psr flag"); | |
2278 | return; | |
2279 | } | |
2280 | ||
2281 | if ((cpu_variant & ARM_EXT_V5) != ARM_EXT_V5 | |
2282 | && inst.instruction & ((PSR_c | PSR_x | PSR_s) << PSR_SHIFT)) | |
2283 | { | |
2284 | inst.error = _("immediate value cannot be used to set this field"); | |
2285 | return; | |
2286 | } | |
2287 | ||
2288 | flags |= INST_IMMEDIATE; | |
2289 | ||
2290 | if (inst.reloc.exp.X_add_symbol) | |
2291 | { | |
2292 | inst.reloc.type = BFD_RELOC_ARM_IMMEDIATE; | |
2293 | inst.reloc.pc_rel = 0; | |
2294 | } | |
2295 | else | |
2296 | { | |
2297 | unsigned value = validate_immediate (inst.reloc.exp.X_add_number); | |
2298 | ||
2299 | if (value == (unsigned) FAIL) | |
2300 | { | |
2301 | inst.error = _("Invalid constant"); | |
2302 | return; | |
2303 | } | |
2304 | ||
2305 | inst.instruction |= value; | |
2306 | } | |
2307 | ||
2308 | inst.error = NULL; | |
2309 | inst.instruction |= flags; | |
2310 | end_of_line (str); | |
2311 | } | |
2312 | ||
2313 | /* Long Multiply Parser | |
2314 | UMULL RdLo, RdHi, Rm, Rs | |
2315 | SMULL RdLo, RdHi, Rm, Rs | |
2316 | UMLAL RdLo, RdHi, Rm, Rs | |
2317 | SMLAL RdLo, RdHi, Rm, Rs. */ | |
2318 | ||
2319 | static void | |
2320 | do_mull (str, flags) | |
2321 | char * str; | |
2322 | unsigned long flags; | |
2323 | { | |
2324 | int rdlo, rdhi, rm, rs; | |
2325 | ||
2326 | /* Only one format "rdlo, rdhi, rm, rs". */ | |
2327 | skip_whitespace (str); | |
2328 | ||
2329 | if ((rdlo = reg_required_here (&str, 12)) == FAIL) | |
2330 | { | |
2331 | inst.error = BAD_ARGS; | |
2332 | return; | |
2333 | } | |
2334 | ||
2335 | if (skip_past_comma (&str) == FAIL | |
2336 | || (rdhi = reg_required_here (&str, 16)) == FAIL) | |
2337 | { | |
2338 | inst.error = BAD_ARGS; | |
2339 | return; | |
2340 | } | |
2341 | ||
2342 | if (skip_past_comma (&str) == FAIL | |
2343 | || (rm = reg_required_here (&str, 0)) == FAIL) | |
2344 | { | |
2345 | inst.error = BAD_ARGS; | |
2346 | return; | |
2347 | } | |
2348 | ||
2349 | /* rdhi, rdlo and rm must all be different. */ | |
2350 | if (rdlo == rdhi || rdlo == rm || rdhi == rm) | |
2351 | as_tsktsk (_("rdhi, rdlo and rm must all be different")); | |
2352 | ||
2353 | if (skip_past_comma (&str) == FAIL | |
2354 | || (rs = reg_required_here (&str, 8)) == FAIL) | |
2355 | { | |
2356 | inst.error = BAD_ARGS; | |
2357 | return; | |
2358 | } | |
2359 | ||
2360 | if (rdhi == REG_PC || rdhi == REG_PC || rdhi == REG_PC || rdhi == REG_PC) | |
2361 | { | |
2362 | inst.error = BAD_PC; | |
2363 | return; | |
2364 | } | |
2365 | ||
2366 | inst.instruction |= flags; | |
2367 | end_of_line (str); | |
2368 | return; | |
2369 | } | |
2370 | ||
2371 | static void | |
2372 | do_mul (str, flags) | |
2373 | char * str; | |
2374 | unsigned long flags; | |
2375 | { | |
2376 | int rd, rm; | |
2377 | ||
2378 | /* Only one format "rd, rm, rs". */ | |
2379 | skip_whitespace (str); | |
2380 | ||
2381 | if ((rd = reg_required_here (&str, 16)) == FAIL) | |
2382 | { | |
2383 | inst.error = BAD_ARGS; | |
2384 | return; | |
2385 | } | |
2386 | ||
2387 | if (rd == REG_PC) | |
2388 | { | |
2389 | inst.error = BAD_PC; | |
2390 | return; | |
2391 | } | |
2392 | ||
2393 | if (skip_past_comma (&str) == FAIL | |
2394 | || (rm = reg_required_here (&str, 0)) == FAIL) | |
2395 | { | |
2396 | inst.error = BAD_ARGS; | |
2397 | return; | |
2398 | } | |
2399 | ||
2400 | if (rm == REG_PC) | |
2401 | { | |
2402 | inst.error = BAD_PC; | |
2403 | return; | |
2404 | } | |
2405 | ||
2406 | if (rm == rd) | |
2407 | as_tsktsk (_("rd and rm should be different in mul")); | |
2408 | ||
2409 | if (skip_past_comma (&str) == FAIL | |
2410 | || (rm = reg_required_here (&str, 8)) == FAIL) | |
2411 | { | |
2412 | inst.error = BAD_ARGS; | |
2413 | return; | |
2414 | } | |
2415 | ||
2416 | if (rm == REG_PC) | |
2417 | { | |
2418 | inst.error = BAD_PC; | |
2419 | return; | |
2420 | } | |
2421 | ||
2422 | inst.instruction |= flags; | |
2423 | end_of_line (str); | |
2424 | return; | |
2425 | } | |
2426 | ||
2427 | static void | |
2428 | do_mla (str, flags) | |
2429 | char * str; | |
2430 | unsigned long flags; | |
2431 | { | |
2432 | int rd, rm; | |
2433 | ||
2434 | /* Only one format "rd, rm, rs, rn". */ | |
2435 | skip_whitespace (str); | |
2436 | ||
2437 | if ((rd = reg_required_here (&str, 16)) == FAIL) | |
2438 | { | |
2439 | inst.error = BAD_ARGS; | |
2440 | return; | |
2441 | } | |
2442 | ||
2443 | if (rd == REG_PC) | |
2444 | { | |
2445 | inst.error = BAD_PC; | |
2446 | return; | |
2447 | } | |
2448 | ||
2449 | if (skip_past_comma (&str) == FAIL | |
2450 | || (rm = reg_required_here (&str, 0)) == FAIL) | |
2451 | { | |
2452 | inst.error = BAD_ARGS; | |
2453 | return; | |
2454 | } | |
2455 | ||
2456 | if (rm == REG_PC) | |
2457 | { | |
2458 | inst.error = BAD_PC; | |
2459 | return; | |
2460 | } | |
2461 | ||
2462 | if (rm == rd) | |
2463 | as_tsktsk (_("rd and rm should be different in mla")); | |
2464 | ||
2465 | if (skip_past_comma (&str) == FAIL | |
2466 | || (rd = reg_required_here (&str, 8)) == FAIL | |
2467 | || skip_past_comma (&str) == FAIL | |
2468 | || (rm = reg_required_here (&str, 12)) == FAIL) | |
2469 | { | |
2470 | inst.error = BAD_ARGS; | |
2471 | return; | |
2472 | } | |
2473 | ||
2474 | if (rd == REG_PC || rm == REG_PC) | |
2475 | { | |
2476 | inst.error = BAD_PC; | |
2477 | return; | |
2478 | } | |
2479 | ||
2480 | inst.instruction |= flags; | |
2481 | end_of_line (str); | |
2482 | return; | |
2483 | } | |
2484 | ||
2485 | /* Expects *str -> the characters "acc0", possibly with leading blanks. | |
2486 | Advances *str to the next non-alphanumeric. | |
2487 | Returns 0, or else FAIL (in which case sets inst.error). | |
2488 | ||
2489 | (In a future XScale, there may be accumulators other than zero. | |
2490 | At that time this routine and its callers can be upgraded to suit.) */ | |
2491 | ||
2492 | static int | |
2493 | accum0_required_here (str) | |
2494 | char ** str; | |
2495 | { | |
bc805888 | 2496 | static char buff [128]; /* Note the address is taken. Hence, static. */ |
077b8428 NC |
2497 | char * p = * str; |
2498 | char c; | |
2499 | int result = 0; /* The accum number. */ | |
2500 | ||
2501 | skip_whitespace (p); | |
bc805888 | 2502 | |
077b8428 NC |
2503 | *str = p; /* Advance caller's string pointer too. */ |
2504 | c = *p++; | |
2505 | while (isalnum (c)) | |
2506 | c = *p++; | |
2507 | ||
2508 | *--p = 0; /* Aap nul into input buffer at non-alnum. */ | |
bc805888 | 2509 | |
077b8428 NC |
2510 | if (! ( streq (*str, "acc0") || streq (*str, "ACC0"))) |
2511 | { | |
2512 | sprintf (buff, _("acc0 expected, not '%.100s'"), *str); | |
2513 | inst.error = buff; | |
2514 | result = FAIL; | |
2515 | } | |
bc805888 | 2516 | |
077b8428 NC |
2517 | *p = c; /* Unzap. */ |
2518 | *str = p; /* Caller's string pointer to after match. */ | |
2519 | return result; | |
2520 | } | |
2521 | ||
2522 | /* Expects **str -> after a comma. May be leading blanks. | |
2523 | Advances *str, recognizing a load mode, and setting inst.instruction. | |
bc805888 | 2524 | Returns rn, or else FAIL (in which case may set inst.error |
077b8428 | 2525 | and not advance str) |
bc805888 | 2526 | |
077b8428 NC |
2527 | Note: doesn't know Rd, so no err checks that require such knowledge. */ |
2528 | ||
2529 | static int | |
2530 | ld_mode_required_here (string) | |
2531 | char ** string; | |
2532 | { | |
2533 | char * str = * string; | |
2534 | int rn; | |
2535 | int pre_inc = 0; | |
2536 | ||
2537 | skip_whitespace (str); | |
bc805888 | 2538 | |
077b8428 NC |
2539 | if (* str == '[') |
2540 | { | |
2541 | str++; | |
bc805888 | 2542 | |
077b8428 NC |
2543 | skip_whitespace (str); |
2544 | ||
2545 | if ((rn = reg_required_here (& str, 16)) == FAIL) | |
2546 | return FAIL; | |
2547 | ||
2548 | skip_whitespace (str); | |
2549 | ||
2550 | if (* str == ']') | |
2551 | { | |
2552 | str ++; | |
bc805888 | 2553 | |
077b8428 NC |
2554 | if (skip_past_comma (& str) == SUCCESS) |
2555 | { | |
2556 | /* [Rn],... (post inc) */ | |
2557 | if (ldst_extend (& str, 1) == FAIL) | |
2558 | return FAIL; | |
2559 | } | |
2560 | else /* [Rn] */ | |
2561 | { | |
2562 | skip_whitespace (str); | |
2563 | ||
2564 | if (* str == '!') | |
2565 | { | |
2566 | str ++; | |
2567 | inst.instruction |= WRITE_BACK; | |
2568 | } | |
2569 | ||
2570 | inst.instruction |= INDEX_UP | HWOFFSET_IMM; | |
2571 | pre_inc = 1; | |
2572 | } | |
2573 | } | |
2574 | else /* [Rn,...] */ | |
2575 | { | |
2576 | if (skip_past_comma (& str) == FAIL) | |
2577 | { | |
2578 | inst.error = _("pre-indexed expression expected"); | |
2579 | return FAIL; | |
2580 | } | |
2581 | ||
2582 | pre_inc = 1; | |
bc805888 | 2583 | |
077b8428 NC |
2584 | if (ldst_extend (& str, 1) == FAIL) |
2585 | return FAIL; | |
2586 | ||
2587 | skip_whitespace (str); | |
2588 | ||
2589 | if (* str ++ != ']') | |
2590 | { | |
2591 | inst.error = _("missing ]"); | |
2592 | return FAIL; | |
2593 | } | |
2594 | ||
2595 | skip_whitespace (str); | |
2596 | ||
2597 | if (* str == '!') | |
2598 | { | |
2599 | str ++; | |
2600 | inst.instruction |= WRITE_BACK; | |
2601 | } | |
2602 | } | |
2603 | } | |
2604 | else if (* str == '=') /* ldr's "r,=label" syntax */ | |
2605 | /* We should never reach here, because <text> = <expression> is | |
2606 | caught gas/read.c read_a_source_file() as a .set operation. */ | |
2607 | return FAIL; | |
2608 | else /* PC +- 8 bit immediate offset. */ | |
2609 | { | |
2610 | if (my_get_expression (& inst.reloc.exp, & str)) | |
2611 | return FAIL; | |
2612 | ||
2613 | inst.instruction |= HWOFFSET_IMM; /* The I bit. */ | |
2614 | inst.reloc.type = BFD_RELOC_ARM_OFFSET_IMM8; | |
2615 | inst.reloc.exp.X_add_number -= 8; /* PC rel adjust. */ | |
2616 | inst.reloc.pc_rel = 1; | |
2617 | inst.instruction |= (REG_PC << 16); | |
bc805888 | 2618 | |
077b8428 NC |
2619 | rn = REG_PC; |
2620 | pre_inc = 1; | |
2621 | } | |
2622 | ||
2623 | inst.instruction |= (pre_inc ? PRE_INDEX : 0); | |
2624 | * string = str; | |
bc805888 | 2625 | |
077b8428 NC |
2626 | return rn; |
2627 | } | |
2628 | ||
2629 | /* ARM V5E (El Segundo) signed-multiply-accumulate (argument parse) | |
2630 | SMLAxy{cond} Rd,Rm,Rs,Rn | |
2631 | SMLAWy{cond} Rd,Rm,Rs,Rn | |
2632 | Error if any register is R15. */ | |
2633 | ||
2634 | static void | |
2635 | do_smla (str, flags) | |
2636 | char * str; | |
2637 | unsigned long flags; | |
2638 | { | |
2639 | int rd, rm, rs, rn; | |
2640 | ||
2641 | skip_whitespace (str); | |
2642 | ||
2643 | if ((rd = reg_required_here (& str, 16)) == FAIL | |
2644 | || skip_past_comma (& str) == FAIL | |
2645 | || (rm = reg_required_here (& str, 0)) == FAIL | |
2646 | || skip_past_comma (& str) == FAIL | |
2647 | || (rs = reg_required_here (& str, 8)) == FAIL | |
2648 | || skip_past_comma (& str) == FAIL | |
2649 | || (rn = reg_required_here (& str, 12)) == FAIL) | |
2650 | inst.error = BAD_ARGS; | |
2651 | ||
bc805888 | 2652 | else if (rd == REG_PC || rm == REG_PC || rs == REG_PC || rn == REG_PC) |
077b8428 NC |
2653 | inst.error = BAD_PC; |
2654 | ||
2655 | else if (flags) | |
2656 | inst.error = BAD_FLAGS; | |
2657 | ||
2658 | else | |
2659 | end_of_line (str); | |
2660 | } | |
2661 | ||
2662 | /* ARM V5E (El Segundo) signed-multiply-accumulate-long (argument parse) | |
2663 | SMLALxy{cond} Rdlo,Rdhi,Rm,Rs | |
2664 | Error if any register is R15. | |
2665 | Warning if Rdlo == Rdhi. */ | |
2666 | ||
2667 | static void | |
2668 | do_smlal (str, flags) | |
2669 | char * str; | |
2670 | unsigned long flags; | |
2671 | { | |
2672 | int rdlo, rdhi, rm, rs; | |
2673 | ||
2674 | skip_whitespace (str); | |
2675 | ||
2676 | if ((rdlo = reg_required_here (& str, 12)) == FAIL | |
2677 | || skip_past_comma (& str) == FAIL | |
2678 | || (rdhi = reg_required_here (& str, 16)) == FAIL | |
2679 | || skip_past_comma (& str) == FAIL | |
2680 | || (rm = reg_required_here (& str, 0)) == FAIL | |
2681 | || skip_past_comma (& str) == FAIL | |
2682 | || (rs = reg_required_here (& str, 8)) == FAIL) | |
2683 | { | |
2684 | inst.error = BAD_ARGS; | |
2685 | return; | |
2686 | } | |
2687 | ||
2688 | if (rdlo == REG_PC || rdhi == REG_PC || rm == REG_PC || rs == REG_PC) | |
2689 | { | |
2690 | inst.error = BAD_PC; | |
2691 | return; | |
2692 | } | |
2693 | ||
2694 | if (rdlo == rdhi) | |
2695 | as_tsktsk (_("rdhi and rdlo must be different")); | |
bc805888 | 2696 | |
077b8428 NC |
2697 | if (flags) |
2698 | inst.error = BAD_FLAGS; | |
2699 | else | |
2700 | end_of_line (str); | |
2701 | } | |
2702 | ||
2703 | /* ARM V5E (El Segundo) signed-multiply (argument parse) | |
2704 | SMULxy{cond} Rd,Rm,Rs | |
2705 | Error if any register is R15. */ | |
2706 | ||
2707 | static void | |
2708 | do_smul (str, flags) | |
2709 | char * str; | |
2710 | unsigned long flags; | |
2711 | { | |
2712 | int rd, rm, rs; | |
2713 | ||
2714 | skip_whitespace (str); | |
2715 | ||
2716 | if ((rd = reg_required_here (& str, 16)) == FAIL | |
2717 | || skip_past_comma (& str) == FAIL | |
2718 | || (rm = reg_required_here (& str, 0)) == FAIL | |
2719 | || skip_past_comma (& str) == FAIL | |
2720 | || (rs = reg_required_here (& str, 8)) == FAIL) | |
2721 | inst.error = BAD_ARGS; | |
2722 | ||
2723 | else if (rd == REG_PC || rm == REG_PC || rs == REG_PC) | |
2724 | inst.error = BAD_PC; | |
2725 | ||
2726 | else if (flags) | |
2727 | inst.error = BAD_FLAGS; | |
2728 | ||
2729 | else | |
2730 | end_of_line (str); | |
2731 | } | |
2732 | ||
2733 | /* ARM V5E (El Segundo) saturating-add/subtract (argument parse) | |
2734 | Q[D]{ADD,SUB}{cond} Rd,Rm,Rn | |
2735 | Error if any register is R15. */ | |
2736 | ||
2737 | static void | |
2738 | do_qadd (str, flags) | |
2739 | char * str; | |
2740 | unsigned long flags; | |
2741 | { | |
2742 | int rd, rm, rn; | |
2743 | ||
2744 | skip_whitespace (str); | |
2745 | ||
2746 | if ((rd = reg_required_here (& str, 12)) == FAIL | |
2747 | || skip_past_comma (& str) == FAIL | |
2748 | || (rm = reg_required_here (& str, 0)) == FAIL | |
2749 | || skip_past_comma (& str) == FAIL | |
2750 | || (rn = reg_required_here (& str, 16)) == FAIL) | |
2751 | inst.error = BAD_ARGS; | |
2752 | ||
2753 | else if (rd == REG_PC || rm == REG_PC || rn == REG_PC) | |
2754 | inst.error = BAD_PC; | |
2755 | ||
2756 | else if (flags) | |
2757 | inst.error = BAD_FLAGS; | |
2758 | ||
2759 | else | |
2760 | end_of_line (str); | |
2761 | } | |
2762 | ||
2763 | /* ARM V5E (el Segundo) | |
2764 | MCRRcc <coproc>, <opcode>, <Rd>, <Rn>, <CRm>. | |
bc805888 | 2765 | MRRCcc <coproc>, <opcode>, <Rd>, <Rn>, <CRm>. |
077b8428 NC |
2766 | |
2767 | These are equivalent to the XScale instructions MAR and MRA, | |
bc805888 | 2768 | respectively, when coproc == 0, opcode == 0, and CRm == 0. |
077b8428 NC |
2769 | |
2770 | Result unpredicatable if Rd or Rn is R15. */ | |
2771 | ||
2772 | static void | |
2773 | do_co_reg2c (str, flags) | |
2774 | char * str; | |
2775 | unsigned long flags; | |
2776 | { | |
2777 | int rd, rn; | |
2778 | ||
2779 | skip_whitespace (str); | |
2780 | ||
2781 | if (co_proc_number (& str) == FAIL) | |
2782 | { | |
2783 | if (!inst.error) | |
2784 | inst.error = BAD_ARGS; | |
2785 | return; | |
2786 | } | |
2787 | ||
2788 | if (skip_past_comma (& str) == FAIL | |
2789 | || cp_opc_expr (& str, 4, 4) == FAIL) | |
2790 | { | |
2791 | if (!inst.error) | |
2792 | inst.error = BAD_ARGS; | |
2793 | return; | |
2794 | } | |
2795 | ||
2796 | if (skip_past_comma (& str) == FAIL | |
2797 | || (rd = reg_required_here (& str, 12)) == FAIL) | |
2798 | { | |
2799 | if (!inst.error) | |
2800 | inst.error = BAD_ARGS; | |
2801 | return; | |
2802 | } | |
2803 | ||
2804 | if (skip_past_comma (& str) == FAIL | |
2805 | || (rn = reg_required_here (& str, 16)) == FAIL) | |
2806 | { | |
2807 | if (!inst.error) | |
2808 | inst.error = BAD_ARGS; | |
2809 | return; | |
2810 | } | |
2811 | ||
2812 | /* Unpredictable result if rd or rn is R15. */ | |
2813 | if (rd == REG_PC || rn == REG_PC) | |
bc805888 | 2814 | as_tsktsk |
077b8428 NC |
2815 | (_("Warning: Instruction unpredictable when using r15")); |
2816 | ||
2817 | if (skip_past_comma (& str) == FAIL | |
2818 | || cp_reg_required_here (& str, 0) == FAIL) | |
2819 | { | |
2820 | if (!inst.error) | |
2821 | inst.error = BAD_ARGS; | |
2822 | return; | |
2823 | } | |
2824 | ||
2825 | if (flags) | |
2826 | inst.error = BAD_COND; | |
2827 | ||
2828 | end_of_line (str); | |
2829 | } | |
2830 | ||
077b8428 NC |
2831 | /* ARM V5 count-leading-zeroes instruction (argument parse) |
2832 | CLZ{<cond>} <Rd>, <Rm> | |
2833 | Condition defaults to COND_ALWAYS. | |
2834 | Error if Rd or Rm are R15. */ | |
2835 | ||
2836 | static void | |
2837 | do_clz (str, flags) | |
2838 | char * str; | |
2839 | unsigned long flags; | |
2840 | { | |
2841 | int rd, rm; | |
2842 | ||
2843 | if (flags) | |
2844 | { | |
2845 | as_bad (BAD_FLAGS); | |
2846 | return; | |
2847 | } | |
2848 | ||
2849 | skip_whitespace (str); | |
2850 | ||
2851 | if (((rd = reg_required_here (& str, 12)) == FAIL) | |
2852 | || (skip_past_comma (& str) == FAIL) | |
2853 | || ((rm = reg_required_here (& str, 0)) == FAIL)) | |
2854 | inst.error = BAD_ARGS; | |
2855 | ||
2856 | else if (rd == REG_PC || rm == REG_PC ) | |
2857 | inst.error = BAD_PC; | |
2858 | ||
2859 | else | |
2860 | end_of_line (str); | |
2861 | } | |
2862 | ||
2863 | /* ARM V5 (argument parse) | |
2864 | LDC2{L} <coproc>, <CRd>, <addressing mode> | |
2865 | STC2{L} <coproc>, <CRd>, <addressing mode> | |
2866 | Instruction is not conditional, and has 0xf in the codition field. | |
2867 | Otherwise, it's the same as LDC/STC. */ | |
2868 | ||
2869 | static void | |
2870 | do_lstc2 (str, flags) | |
2871 | char * str; | |
2872 | unsigned long flags; | |
2873 | { | |
2874 | if (flags) | |
2875 | inst.error = BAD_COND; | |
2876 | ||
2877 | skip_whitespace (str); | |
2878 | ||
2879 | if (co_proc_number (& str) == FAIL) | |
2880 | { | |
2881 | if (!inst.error) | |
2882 | inst.error = BAD_ARGS; | |
2883 | } | |
2884 | else if (skip_past_comma (& str) == FAIL | |
2885 | || cp_reg_required_here (& str, 12) == FAIL) | |
2886 | { | |
2887 | if (!inst.error) | |
2888 | inst.error = BAD_ARGS; | |
2889 | } | |
2890 | else if (skip_past_comma (& str) == FAIL | |
2891 | || cp_address_required_here (& str) == FAIL) | |
2892 | { | |
2893 | if (! inst.error) | |
2894 | inst.error = BAD_ARGS; | |
2895 | } | |
2896 | else | |
2897 | end_of_line (str); | |
2898 | } | |
2899 | ||
2900 | /* ARM V5 (argument parse) | |
2901 | CDP2 <coproc>, <opcode_1>, <CRd>, <CRn>, <CRm>, <opcode_2> | |
2902 | Instruction is not conditional, and has 0xf in the condition field. | |
2903 | Otherwise, it's the same as CDP. */ | |
2904 | ||
2905 | static void | |
2906 | do_cdp2 (str, flags) | |
2907 | char * str; | |
2908 | unsigned long flags; | |
2909 | { | |
2910 | skip_whitespace (str); | |
2911 | ||
2912 | if (co_proc_number (& str) == FAIL) | |
2913 | { | |
2914 | if (!inst.error) | |
2915 | inst.error = BAD_ARGS; | |
2916 | return; | |
2917 | } | |
2918 | ||
2919 | if (skip_past_comma (& str) == FAIL | |
2920 | || cp_opc_expr (& str, 20,4) == FAIL) | |
2921 | { | |
2922 | if (!inst.error) | |
2923 | inst.error = BAD_ARGS; | |
2924 | return; | |
2925 | } | |
2926 | ||
2927 | if (skip_past_comma (& str) == FAIL | |
2928 | || cp_reg_required_here (& str, 12) == FAIL) | |
2929 | { | |
2930 | if (!inst.error) | |
2931 | inst.error = BAD_ARGS; | |
2932 | return; | |
2933 | } | |
2934 | ||
2935 | if (skip_past_comma (& str) == FAIL | |
2936 | || cp_reg_required_here (& str, 16) == FAIL) | |
2937 | { | |
2938 | if (!inst.error) | |
2939 | inst.error = BAD_ARGS; | |
2940 | return; | |
2941 | } | |
2942 | ||
2943 | if (skip_past_comma (& str) == FAIL | |
2944 | || cp_reg_required_here (& str, 0) == FAIL) | |
2945 | { | |
2946 | if (!inst.error) | |
2947 | inst.error = BAD_ARGS; | |
2948 | return; | |
2949 | } | |
2950 | ||
2951 | if (skip_past_comma (& str) == SUCCESS) | |
2952 | { | |
2953 | if (cp_opc_expr (& str, 5, 3) == FAIL) | |
2954 | { | |
2955 | if (!inst.error) | |
2956 | inst.error = BAD_ARGS; | |
2957 | return; | |
2958 | } | |
2959 | } | |
2960 | ||
2961 | if (flags) | |
2962 | inst.error = BAD_FLAGS; | |
bc805888 | 2963 | |
077b8428 NC |
2964 | end_of_line (str); |
2965 | } | |
2966 | ||
2967 | /* ARM V5 (argument parse) | |
2968 | MCR2 <coproc>, <opcode_1>, <Rd>, <CRn>, <CRm>, <opcode_2> | |
2969 | MRC2 <coproc>, <opcode_1>, <Rd>, <CRn>, <CRm>, <opcode_2> | |
2970 | Instruction is not conditional, and has 0xf in the condition field. | |
2971 | Otherwise, it's the same as MCR/MRC. */ | |
2972 | ||
2973 | static void | |
2974 | do_co_reg2 (str, flags) | |
2975 | char * str; | |
2976 | unsigned long flags; | |
2977 | { | |
2978 | skip_whitespace (str); | |
2979 | ||
2980 | if (co_proc_number (& str) == FAIL) | |
2981 | { | |
2982 | if (!inst.error) | |
2983 | inst.error = BAD_ARGS; | |
2984 | return; | |
2985 | } | |
2986 | ||
2987 | if (skip_past_comma (& str) == FAIL | |
2988 | || cp_opc_expr (& str, 21, 3) == FAIL) | |
2989 | { | |
2990 | if (!inst.error) | |
2991 | inst.error = BAD_ARGS; | |
2992 | return; | |
2993 | } | |
2994 | ||
2995 | if (skip_past_comma (& str) == FAIL | |
2996 | || reg_required_here (& str, 12) == FAIL) | |
2997 | { | |
2998 | if (!inst.error) | |
2999 | inst.error = BAD_ARGS; | |
3000 | return; | |
3001 | } | |
3002 | ||
3003 | if (skip_past_comma (& str) == FAIL | |
3004 | || cp_reg_required_here (& str, 16) == FAIL) | |
3005 | { | |
3006 | if (!inst.error) | |
3007 | inst.error = BAD_ARGS; | |
3008 | return; | |
3009 | } | |
3010 | ||
3011 | if (skip_past_comma (& str) == FAIL | |
3012 | || cp_reg_required_here (& str, 0) == FAIL) | |
3013 | { | |
3014 | if (!inst.error) | |
3015 | inst.error = BAD_ARGS; | |
3016 | return; | |
3017 | } | |
3018 | ||
3019 | if (skip_past_comma (& str) == SUCCESS) | |
3020 | { | |
3021 | if (cp_opc_expr (& str, 5, 3) == FAIL) | |
3022 | { | |
3023 | if (!inst.error) | |
3024 | inst.error = BAD_ARGS; | |
3025 | return; | |
3026 | } | |
3027 | } | |
3028 | ||
3029 | if (flags) | |
3030 | inst.error = BAD_COND; | |
3031 | ||
3032 | end_of_line (str); | |
3033 | } | |
3034 | ||
3035 | /* THUMB V5 breakpoint instruction (argument parse) | |
3036 | BKPT <immed_8>. */ | |
3037 | ||
3038 | static void | |
3039 | do_t_bkpt (str) | |
3040 | char * str; | |
3041 | { | |
3042 | expressionS expr; | |
3043 | unsigned long number; | |
3044 | ||
bc805888 | 3045 | skip_whitespace (str); |
077b8428 NC |
3046 | |
3047 | /* Allow optional leading '#'. */ | |
3048 | if (is_immediate_prefix (*str)) | |
3049 | str ++; | |
3050 | ||
3051 | memset (& expr, '\0', sizeof (expr)); | |
3052 | if (my_get_expression (& expr, & str) || (expr.X_op != O_constant)) | |
3053 | { | |
3054 | inst.error = _("bad or missing expression"); | |
3055 | return; | |
3056 | } | |
bc805888 | 3057 | |
077b8428 | 3058 | number = expr.X_add_number; |
bc805888 | 3059 | |
077b8428 NC |
3060 | /* Check it fits an 8 bit unsigned. */ |
3061 | if (number != (number & 0xff)) | |
3062 | { | |
3063 | inst.error = _("immediate value out of range"); | |
3064 | return; | |
3065 | } | |
3066 | ||
3067 | inst.instruction |= number; | |
3068 | ||
3069 | end_of_line (str); | |
3070 | } | |
3071 | ||
3072 | /* ARM V5 branch-link-exchange (argument parse) for BLX(1) only. | |
3073 | Expects inst.instruction is set for BLX(1). | |
3074 | Note: this is cloned from do_branch, and the reloc changed to be a | |
3075 | new one that can cope with setting one extra bit (the H bit). */ | |
3076 | ||
3077 | static void | |
3078 | do_branch25 (str, flags) | |
3079 | char * str; | |
3080 | unsigned long flags ATTRIBUTE_UNUSED; | |
3081 | { | |
3082 | if (my_get_expression (& inst.reloc.exp, & str)) | |
3083 | return; | |
bc805888 | 3084 | |
077b8428 NC |
3085 | #ifdef OBJ_ELF |
3086 | { | |
3087 | char * save_in; | |
bc805888 | 3088 | |
077b8428 NC |
3089 | /* ScottB: February 5, 1998 */ |
3090 | /* Check to see of PLT32 reloc required for the instruction. */ | |
bc805888 | 3091 | |
077b8428 NC |
3092 | /* arm_parse_reloc() works on input_line_pointer. |
3093 | We actually want to parse the operands to the branch instruction | |
3094 | passed in 'str'. Save the input pointer and restore it later. */ | |
3095 | save_in = input_line_pointer; | |
3096 | input_line_pointer = str; | |
bc805888 | 3097 | |
077b8428 NC |
3098 | if (inst.reloc.exp.X_op == O_symbol |
3099 | && *str == '(' | |
3100 | && arm_parse_reloc () == BFD_RELOC_ARM_PLT32) | |
3101 | { | |
3102 | inst.reloc.type = BFD_RELOC_ARM_PLT32; | |
3103 | inst.reloc.pc_rel = 0; | |
3104 | /* Modify str to point to after parsed operands, otherwise | |
3105 | end_of_line() will complain about the (PLT) left in str. */ | |
3106 | str = input_line_pointer; | |
3107 | } | |
3108 | else | |
3109 | { | |
3110 | inst.reloc.type = BFD_RELOC_ARM_PCREL_BLX; | |
3111 | inst.reloc.pc_rel = 1; | |
3112 | } | |
bc805888 | 3113 | |
077b8428 NC |
3114 | input_line_pointer = save_in; |
3115 | } | |
3116 | #else | |
3117 | inst.reloc.type = BFD_RELOC_ARM_PCREL_BLX; | |
3118 | inst.reloc.pc_rel = 1; | |
3119 | #endif /* OBJ_ELF */ | |
bc805888 | 3120 | |
077b8428 NC |
3121 | end_of_line (str); |
3122 | } | |
3123 | ||
3124 | /* ARM V5 branch-link-exchange instruction (argument parse) | |
3125 | BLX <target_addr> ie BLX(1) | |
3126 | BLX{<condition>} <Rm> ie BLX(2) | |
3127 | Unfortunately, there are two different opcodes for this mnemonic. | |
3128 | So, the insns[].value is not used, and the code here zaps values | |
bc805888 | 3129 | into inst.instruction. |
077b8428 | 3130 | Also, the <target_addr> can be 25 bits, hence has its own reloc. */ |
28e4f854 | 3131 | |
252b5132 | 3132 | static void |
077b8428 NC |
3133 | do_blx (str, flags) |
3134 | char * str; | |
252b5132 RH |
3135 | unsigned long flags; |
3136 | { | |
077b8428 NC |
3137 | char * mystr = str; |
3138 | int rm; | |
28e4f854 | 3139 | |
077b8428 | 3140 | if (flags) |
322f2c45 | 3141 | { |
077b8428 | 3142 | as_bad (BAD_FLAGS); |
322f2c45 NC |
3143 | return; |
3144 | } | |
bc805888 | 3145 | |
077b8428 NC |
3146 | skip_whitespace (mystr); |
3147 | rm = reg_required_here (& mystr, 0); | |
bc805888 | 3148 | |
077b8428 NC |
3149 | /* The above may set inst.error. Ignore his opinion. */ |
3150 | inst.error = 0; | |
bc805888 | 3151 | |
077b8428 NC |
3152 | if (rm != FAIL) |
3153 | { | |
3154 | /* Arg is a register. | |
3155 | Use the condition code our caller put in inst.instruction. | |
3156 | Pass ourselves off as a BX with a funny opcode. */ | |
3157 | inst.instruction |= 0x012fff30; | |
3158 | do_bx (str, flags); | |
322f2c45 | 3159 | } |
077b8428 | 3160 | else |
322f2c45 | 3161 | { |
077b8428 NC |
3162 | /* This must be is BLX <target address>, no condition allowed. */ |
3163 | if (inst.instruction != COND_ALWAYS) | |
3164 | { | |
3165 | inst.error = BAD_COND; | |
3166 | return; | |
3167 | } | |
bc805888 | 3168 | |
077b8428 | 3169 | inst.instruction = 0xfafffffe; |
bc805888 | 3170 | |
077b8428 NC |
3171 | /* Process like a B/BL, but with a different reloc. |
3172 | Note that B/BL expecte fffffe, not 0, offset in the opcode table. */ | |
3173 | do_branch25 (str, flags); | |
322f2c45 | 3174 | } |
077b8428 | 3175 | } |
322f2c45 | 3176 | |
077b8428 NC |
3177 | /* ARM V5 Thumb BLX (argument parse) |
3178 | BLX <target_addr> which is BLX(1) | |
3179 | BLX <Rm> which is BLX(2) | |
3180 | Unfortunately, there are two different opcodes for this mnemonic. | |
3181 | So, the tinsns[].value is not used, and the code here zaps values | |
3182 | into inst.instruction. */ | |
28e4f854 | 3183 | |
077b8428 NC |
3184 | static void |
3185 | do_t_blx (str) | |
3186 | char * str; | |
3187 | { | |
3188 | char * mystr = str; | |
3189 | int rm; | |
28e4f854 | 3190 | |
077b8428 NC |
3191 | skip_whitespace (mystr); |
3192 | inst.instruction = 0x4780; | |
28e4f854 | 3193 | |
077b8428 | 3194 | /* Note that this call is to the ARM register recognizer. BLX(2) |
bc805888 | 3195 | uses the ARM register space, not the Thumb one, so a call to |
077b8428 NC |
3196 | thumb_reg() would be wrong. */ |
3197 | rm = reg_required_here (& mystr, 3); | |
3198 | inst.error = 0; | |
bc805888 | 3199 | |
077b8428 | 3200 | if (rm != FAIL) |
322f2c45 | 3201 | { |
077b8428 NC |
3202 | /* It's BLX(2). The .instruction was zapped with rm & is final. */ |
3203 | inst.size = 2; | |
252b5132 RH |
3204 | } |
3205 | else | |
3206 | { | |
077b8428 NC |
3207 | /* No ARM register. This must be BLX(1). Change the .instruction. */ |
3208 | inst.instruction = 0xf7ffeffe; | |
3209 | inst.size = 4; | |
28e4f854 | 3210 | |
077b8428 NC |
3211 | if (my_get_expression (& inst.reloc.exp, & mystr)) |
3212 | return; | |
bc805888 | 3213 | |
077b8428 NC |
3214 | inst.reloc.type = BFD_RELOC_THUMB_PCREL_BLX; |
3215 | inst.reloc.pc_rel = 1; | |
252b5132 | 3216 | } |
bc805888 | 3217 | |
077b8428 | 3218 | end_of_line (mystr); |
252b5132 RH |
3219 | } |
3220 | ||
077b8428 NC |
3221 | /* ARM V5 breakpoint instruction (argument parse) |
3222 | BKPT <16 bit unsigned immediate> | |
3223 | Instruction is not conditional. | |
3224 | The bit pattern given in insns[] has the COND_ALWAYS condition, | |
3225 | and it is an error if the caller tried to override that. | |
3226 | Note "flags" is nonzero if a flag was supplied (which is an error). */ | |
28e4f854 | 3227 | |
252b5132 | 3228 | static void |
077b8428 NC |
3229 | do_bkpt (str, flags) |
3230 | char * str; | |
252b5132 RH |
3231 | unsigned long flags; |
3232 | { | |
077b8428 NC |
3233 | expressionS expr; |
3234 | unsigned long number; | |
252b5132 | 3235 | |
ae5ad4ad | 3236 | skip_whitespace (str); |
bc805888 | 3237 | |
077b8428 NC |
3238 | /* Allow optional leading '#'. */ |
3239 | if (is_immediate_prefix (* str)) | |
3240 | str++; | |
252b5132 | 3241 | |
077b8428 | 3242 | memset (& expr, '\0', sizeof (expr)); |
bc805888 | 3243 | |
077b8428 | 3244 | if (my_get_expression (& expr, & str) || (expr.X_op != O_constant)) |
252b5132 | 3245 | { |
077b8428 | 3246 | inst.error = _("bad or missing expression"); |
252b5132 RH |
3247 | return; |
3248 | } | |
bc805888 | 3249 | |
077b8428 | 3250 | number = expr.X_add_number; |
bc805888 | 3251 | |
077b8428 NC |
3252 | /* Check it fits a 16 bit unsigned. */ |
3253 | if (number != (number & 0xffff)) | |
252b5132 | 3254 | { |
077b8428 | 3255 | inst.error = _("immediate value out of range"); |
252b5132 RH |
3256 | return; |
3257 | } | |
bc805888 | 3258 | |
077b8428 NC |
3259 | /* Top 12 of 16 bits to bits 19:8. */ |
3260 | inst.instruction |= (number & 0xfff0) << 4; | |
bc805888 | 3261 | |
077b8428 NC |
3262 | /* Bottom 4 of 16 bits to bits 3:0. */ |
3263 | inst.instruction |= number & 0xf; | |
252b5132 | 3264 | |
077b8428 | 3265 | end_of_line (str); |
252b5132 | 3266 | |
077b8428 NC |
3267 | if (flags) |
3268 | inst.error = BAD_FLAGS; | |
3269 | } | |
252b5132 | 3270 | |
077b8428 | 3271 | /* Xscale multiply-accumulate (argument parse) |
bc805888 | 3272 | MIAcc acc0,Rm,Rs |
077b8428 NC |
3273 | MIAPHcc acc0,Rm,Rs |
3274 | MIAxycc acc0,Rm,Rs. */ | |
252b5132 | 3275 | |
077b8428 NC |
3276 | static void |
3277 | do_mia (str, flags) | |
3278 | char * str; | |
3279 | unsigned long flags; | |
3280 | { | |
3281 | int rs; | |
3282 | int rm; | |
28e4f854 | 3283 | |
077b8428 NC |
3284 | if (flags) |
3285 | as_bad (BAD_FLAGS); | |
bc805888 | 3286 | |
077b8428 NC |
3287 | else if (accum0_required_here (& str) == FAIL) |
3288 | inst.error = ERR_NO_ACCUM; | |
bc805888 | 3289 | |
077b8428 NC |
3290 | else if (skip_past_comma (& str) == FAIL |
3291 | || (rm = reg_required_here (& str, 0)) == FAIL) | |
3292 | inst.error = BAD_ARGS; | |
bc805888 | 3293 | |
077b8428 NC |
3294 | else if (skip_past_comma (& str) == FAIL |
3295 | || (rs = reg_required_here (& str, 12)) == FAIL) | |
3296 | inst.error = BAD_ARGS; | |
bc805888 KH |
3297 | |
3298 | /* inst.instruction has now been zapped with both rm and rs. */ | |
077b8428 NC |
3299 | else if (rm == REG_PC || rs == REG_PC) |
3300 | inst.error = BAD_PC; /* Undefined result if rm or rs is R15. */ | |
bc805888 | 3301 | |
077b8428 NC |
3302 | else |
3303 | end_of_line (str); | |
252b5132 RH |
3304 | } |
3305 | ||
077b8428 NC |
3306 | /* Xscale move-accumulator-register (argument parse) |
3307 | ||
3308 | MARcc acc0,RdLo,RdHi. */ | |
3309 | ||
252b5132 | 3310 | static void |
077b8428 | 3311 | do_mar (str, flags) |
d78c7dca | 3312 | char * str; |
252b5132 RH |
3313 | unsigned long flags; |
3314 | { | |
077b8428 | 3315 | int rdlo, rdhi; |
28e4f854 | 3316 | |
077b8428 NC |
3317 | if (flags) |
3318 | as_bad (BAD_FLAGS); | |
bc805888 | 3319 | |
077b8428 NC |
3320 | else if (accum0_required_here (& str) == FAIL) |
3321 | inst.error = ERR_NO_ACCUM; | |
bc805888 | 3322 | |
077b8428 NC |
3323 | else if (skip_past_comma (& str) == FAIL |
3324 | || (rdlo = reg_required_here (& str, 12)) == FAIL) | |
3325 | inst.error = BAD_ARGS; | |
bc805888 | 3326 | |
077b8428 NC |
3327 | else if (skip_past_comma (& str) == FAIL |
3328 | || (rdhi = reg_required_here (& str, 16)) == FAIL) | |
3329 | inst.error = BAD_ARGS; | |
bc805888 | 3330 | |
077b8428 NC |
3331 | /* inst.instruction has now been zapped with both rdlo and rdhi. */ |
3332 | else if (rdlo == REG_PC || rdhi == REG_PC) | |
3333 | inst.error = BAD_PC; /* Undefined result if rdlo or rdhi is R15. */ | |
bc805888 | 3334 | |
077b8428 NC |
3335 | else |
3336 | end_of_line (str); | |
3337 | } | |
252b5132 | 3338 | |
077b8428 | 3339 | /* Xscale move-register-accumulator (argument parse) |
252b5132 | 3340 | |
077b8428 NC |
3341 | MRAcc RdLo,RdHi,acc0. */ |
3342 | ||
3343 | static void | |
3344 | do_mra (str, flags) | |
3345 | char * str; | |
3346 | unsigned long flags; | |
3347 | { | |
3348 | int rdlo; | |
3349 | int rdhi; | |
3350 | ||
3351 | if (flags) | |
252b5132 | 3352 | { |
077b8428 | 3353 | as_bad (BAD_FLAGS); |
252b5132 RH |
3354 | return; |
3355 | } | |
3356 | ||
077b8428 NC |
3357 | skip_whitespace (str); |
3358 | ||
3359 | if ((rdlo = reg_required_here (& str, 12)) == FAIL) | |
3360 | inst.error = BAD_ARGS; | |
3361 | ||
3362 | else if (skip_past_comma (& str) == FAIL | |
3363 | || (rdhi = reg_required_here (& str, 16)) == FAIL) | |
3364 | inst.error = BAD_ARGS; | |
3365 | ||
3366 | else if (skip_past_comma (& str) == FAIL | |
3367 | || accum0_required_here (& str) == FAIL) | |
3368 | inst.error = ERR_NO_ACCUM; | |
3369 | ||
3370 | /* inst.instruction has now been zapped with both rdlo and rdhi. */ | |
3371 | else if (rdlo == rdhi) | |
3372 | inst.error = BAD_ARGS; /* Undefined result if 2 writes to same reg. */ | |
3373 | ||
3374 | else if (rdlo == REG_PC || rdhi == REG_PC) | |
3375 | inst.error = BAD_PC; /* Undefined result if rdlo or rdhi is R15. */ | |
3376 | else | |
3377 | end_of_line (str); | |
3378 | } | |
3379 | ||
bc805888 | 3380 | /* Xscale: Preload-Cache |
077b8428 NC |
3381 | |
3382 | PLD <addr_mode> | |
bc805888 | 3383 | |
077b8428 NC |
3384 | Syntactically, like LDR with B=1, W=0, L=1. */ |
3385 | ||
3386 | static void | |
3387 | do_pld (str, flags) | |
3388 | char * str; | |
3389 | unsigned long flags; | |
3390 | { | |
3391 | int rd; | |
3392 | ||
3393 | if (flags) | |
252b5132 | 3394 | { |
077b8428 | 3395 | as_bad (BAD_FLAGS); |
252b5132 RH |
3396 | return; |
3397 | } | |
3398 | ||
077b8428 NC |
3399 | skip_whitespace (str); |
3400 | ||
3401 | if (* str != '[') | |
252b5132 | 3402 | { |
077b8428 | 3403 | inst.error = _("'[' expected after PLD mnemonic"); |
252b5132 RH |
3404 | return; |
3405 | } | |
3406 | ||
077b8428 NC |
3407 | ++ str; |
3408 | skip_whitespace (str); | |
252b5132 | 3409 | |
077b8428 NC |
3410 | if ((rd = reg_required_here (& str, 16)) == FAIL) |
3411 | return; | |
3412 | ||
3413 | skip_whitespace (str); | |
bc805888 | 3414 | |
077b8428 | 3415 | if (* str == ']') |
252b5132 | 3416 | { |
077b8428 NC |
3417 | /* [Rn], ... ? */ |
3418 | ++ str; | |
3419 | skip_whitespace (str); | |
252b5132 | 3420 | |
077b8428 NC |
3421 | if (skip_past_comma (& str) == SUCCESS) |
3422 | { | |
3423 | if (ldst_extend (& str, 0) == FAIL) | |
3424 | return; | |
3425 | } | |
3426 | else if (* str == '!') /* [Rn]! */ | |
3427 | { | |
3428 | inst.error = _("writeback used in preload instruction"); | |
3429 | ++ str; | |
3430 | } | |
3431 | else /* [Rn] */ | |
3432 | inst.instruction |= INDEX_UP | PRE_INDEX; | |
3433 | } | |
3434 | else /* [Rn, ...] */ | |
252b5132 | 3435 | { |
077b8428 NC |
3436 | if (skip_past_comma (& str) == FAIL) |
3437 | { | |
3438 | inst.error = _("pre-indexed expression expected"); | |
3439 | return; | |
3440 | } | |
bc805888 | 3441 | |
077b8428 NC |
3442 | if (ldst_extend (& str, 0) == FAIL) |
3443 | return; | |
3444 | ||
3445 | skip_whitespace (str); | |
3446 | ||
3447 | if (* str != ']') | |
3448 | { | |
3449 | inst.error = _("missing ]"); | |
3450 | return; | |
3451 | } | |
3452 | ||
3453 | ++ str; | |
3454 | skip_whitespace (str); | |
bc805888 | 3455 | |
077b8428 NC |
3456 | if (* str == '!') /* [Rn]! */ |
3457 | { | |
3458 | inst.error = _("writeback used in preload instruction"); | |
3459 | ++ str; | |
3460 | } | |
bc805888 | 3461 | |
077b8428 | 3462 | inst.instruction |= PRE_INDEX; |
252b5132 RH |
3463 | } |
3464 | ||
252b5132 | 3465 | end_of_line (str); |
252b5132 RH |
3466 | } |
3467 | ||
077b8428 NC |
3468 | /* Xscale load-consecutive (argument parse) |
3469 | Mode is like LDRH. | |
3470 | ||
3471 | LDRccD R, mode | |
3472 | STRccD R, mode. */ | |
3473 | ||
252b5132 | 3474 | static void |
077b8428 | 3475 | do_ldrd (str, flags) |
d78c7dca | 3476 | char * str; |
252b5132 RH |
3477 | unsigned long flags; |
3478 | { | |
077b8428 NC |
3479 | int rd; |
3480 | int rn; | |
252b5132 | 3481 | |
077b8428 | 3482 | if (flags != DOUBLE_LOAD_FLAG) |
252b5132 | 3483 | { |
077b8428 NC |
3484 | /* Change instruction pattern to normal ldr/str. */ |
3485 | if (inst.instruction & 0x20) | |
3486 | inst.instruction = (inst.instruction & COND_MASK) | 0x04000000; /* str */ | |
3487 | else | |
3488 | inst.instruction = (inst.instruction & COND_MASK) | 0x04100000; /* ldr */ | |
3489 | ||
3490 | /* Perform a normal load/store instruction parse. */ | |
3491 | do_ldst (str, flags); | |
3492 | ||
252b5132 RH |
3493 | return; |
3494 | } | |
bc805888 | 3495 | |
077b8428 | 3496 | if ((cpu_variant & ARM_EXT_XSCALE) != ARM_EXT_XSCALE) |
252b5132 | 3497 | { |
077b8428 NC |
3498 | static char buff[128]; |
3499 | ||
3500 | --str; | |
3501 | while (isspace (*str)) | |
3502 | --str; | |
3503 | str -= 4; | |
bc805888 | 3504 | |
077b8428 NC |
3505 | /* Deny all knowledge. */ |
3506 | sprintf (buff, _("bad instruction '%.100s'"), str); | |
3507 | inst.error = buff; | |
252b5132 RH |
3508 | return; |
3509 | } | |
bc805888 | 3510 | |
077b8428 | 3511 | skip_whitespace (str); |
bc805888 | 3512 | |
077b8428 | 3513 | if ((rd = reg_required_here (& str, 12)) == FAIL) |
252b5132 | 3514 | { |
90ca882f | 3515 | inst.error = BAD_ARGS; |
252b5132 RH |
3516 | return; |
3517 | } | |
3518 | ||
077b8428 NC |
3519 | if (skip_past_comma (& str) == FAIL |
3520 | || (rn = ld_mode_required_here (& str)) == FAIL) | |
252b5132 | 3521 | { |
077b8428 NC |
3522 | if (!inst.error) |
3523 | inst.error = BAD_ARGS; | |
252b5132 RH |
3524 | return; |
3525 | } | |
bc805888 | 3526 | |
077b8428 NC |
3527 | /* inst.instruction has now been zapped with Rd and the addressing mode. */ |
3528 | if (rd & 1) /* Unpredictable result if Rd is odd. */ | |
252b5132 | 3529 | { |
bc805888 | 3530 | inst.error = _("Destination register must be even"); |
252b5132 RH |
3531 | return; |
3532 | } | |
3533 | ||
077b8428 | 3534 | if (rd == REG_LR || rd == 12) |
252b5132 | 3535 | { |
077b8428 | 3536 | inst.error = _("r12 or r14 not allowed here"); |
252b5132 RH |
3537 | return; |
3538 | } | |
3539 | ||
077b8428 NC |
3540 | if (((rd == rn) || (rd + 1 == rn)) |
3541 | && | |
3542 | ((inst.instruction & WRITE_BACK) | |
3543 | || (!(inst.instruction & PRE_INDEX)))) | |
3544 | as_warn (_("pre/post-indexing used when modified address register is destination")); | |
bc805888 | 3545 | |
252b5132 | 3546 | end_of_line (str); |
252b5132 RH |
3547 | } |
3548 | ||
d78c7dca | 3549 | /* Returns the index into fp_values of a floating point number, |
28e4f854 KH |
3550 | or -1 if not in the table. */ |
3551 | ||
252b5132 RH |
3552 | static int |
3553 | my_get_float_expression (str) | |
d78c7dca | 3554 | char ** str; |
252b5132 RH |
3555 | { |
3556 | LITTLENUM_TYPE words[MAX_LITTLENUMS]; | |
d78c7dca NC |
3557 | char * save_in; |
3558 | expressionS exp; | |
3559 | int i; | |
3560 | int j; | |
252b5132 RH |
3561 | |
3562 | memset (words, 0, MAX_LITTLENUMS * sizeof (LITTLENUM_TYPE)); | |
28e4f854 KH |
3563 | |
3564 | /* Look for a raw floating point number. */ | |
252b5132 | 3565 | if ((save_in = atof_ieee (*str, 'x', words)) != NULL |
28e4f854 | 3566 | && is_end_of_line[(unsigned char) *save_in]) |
252b5132 RH |
3567 | { |
3568 | for (i = 0; i < NUM_FLOAT_VALS; i++) | |
3569 | { | |
3570 | for (j = 0; j < MAX_LITTLENUMS; j++) | |
3571 | { | |
3572 | if (words[j] != fp_values[i][j]) | |
3573 | break; | |
3574 | } | |
3575 | ||
3576 | if (j == MAX_LITTLENUMS) | |
3577 | { | |
3578 | *str = save_in; | |
3579 | return i; | |
3580 | } | |
3581 | } | |
3582 | } | |
3583 | ||
3584 | /* Try and parse a more complex expression, this will probably fail | |
28e4f854 | 3585 | unless the code uses a floating point prefix (eg "0f"). */ |
252b5132 RH |
3586 | save_in = input_line_pointer; |
3587 | input_line_pointer = *str; | |
3588 | if (expression (&exp) == absolute_section | |
3589 | && exp.X_op == O_big | |
3590 | && exp.X_add_number < 0) | |
3591 | { | |
3592 | /* FIXME: 5 = X_PRECISION, should be #define'd where we can use it. | |
3593 | Ditto for 15. */ | |
28e4f854 | 3594 | if (gen_to_words (words, 5, (long) 15) == 0) |
252b5132 RH |
3595 | { |
3596 | for (i = 0; i < NUM_FLOAT_VALS; i++) | |
3597 | { | |
3598 | for (j = 0; j < MAX_LITTLENUMS; j++) | |
3599 | { | |
3600 | if (words[j] != fp_values[i][j]) | |
3601 | break; | |
3602 | } | |
3603 | ||
3604 | if (j == MAX_LITTLENUMS) | |
3605 | { | |
3606 | *str = input_line_pointer; | |
3607 | input_line_pointer = save_in; | |
3608 | return i; | |
3609 | } | |
3610 | } | |
3611 | } | |
3612 | } | |
3613 | ||
3614 | *str = input_line_pointer; | |
3615 | input_line_pointer = save_in; | |
3616 | return -1; | |
3617 | } | |
3618 | ||
28e4f854 KH |
3619 | /* Return true if anything in the expression is a bignum. */ |
3620 | ||
252b5132 RH |
3621 | static int |
3622 | walk_no_bignums (sp) | |
d78c7dca | 3623 | symbolS * sp; |
252b5132 | 3624 | { |
174419c1 | 3625 | if (symbol_get_value_expression (sp)->X_op == O_big) |
252b5132 RH |
3626 | return 1; |
3627 | ||
174419c1 | 3628 | if (symbol_get_value_expression (sp)->X_add_symbol) |
252b5132 | 3629 | { |
174419c1 ILT |
3630 | return (walk_no_bignums (symbol_get_value_expression (sp)->X_add_symbol) |
3631 | || (symbol_get_value_expression (sp)->X_op_symbol | |
3632 | && walk_no_bignums (symbol_get_value_expression (sp)->X_op_symbol))); | |
252b5132 RH |
3633 | } |
3634 | ||
3635 | return 0; | |
3636 | } | |
3637 | ||
3638 | static int | |
3639 | my_get_expression (ep, str) | |
d78c7dca NC |
3640 | expressionS * ep; |
3641 | char ** str; | |
252b5132 | 3642 | { |
d78c7dca NC |
3643 | char * save_in; |
3644 | segT seg; | |
28e4f854 | 3645 | |
252b5132 RH |
3646 | save_in = input_line_pointer; |
3647 | input_line_pointer = *str; | |
3648 | seg = expression (ep); | |
3649 | ||
3650 | #ifdef OBJ_AOUT | |
3651 | if (seg != absolute_section | |
3652 | && seg != text_section | |
3653 | && seg != data_section | |
3654 | && seg != bss_section | |
3655 | && seg != undefined_section) | |
3656 | { | |
3657 | inst.error = _("bad_segment"); | |
3658 | *str = input_line_pointer; | |
3659 | input_line_pointer = save_in; | |
3660 | return 1; | |
3661 | } | |
3662 | #endif | |
3663 | ||
3664 | /* Get rid of any bignums now, so that we don't generate an error for which | |
3665 | we can't establish a line number later on. Big numbers are never valid | |
3666 | in instructions, which is where this routine is always called. */ | |
3667 | if (ep->X_op == O_big | |
3668 | || (ep->X_add_symbol | |
3669 | && (walk_no_bignums (ep->X_add_symbol) | |
3670 | || (ep->X_op_symbol | |
3671 | && walk_no_bignums (ep->X_op_symbol))))) | |
3672 | { | |
3673 | inst.error = _("Invalid constant"); | |
3674 | *str = input_line_pointer; | |
3675 | input_line_pointer = save_in; | |
3676 | return 1; | |
3677 | } | |
3678 | ||
3679 | *str = input_line_pointer; | |
3680 | input_line_pointer = save_in; | |
3681 | return 0; | |
3682 | } | |
3683 | ||
28e4f854 KH |
3684 | /* UNRESTRICT should be one if <shift> <register> is permitted for this |
3685 | instruction. */ | |
252b5132 RH |
3686 | |
3687 | static int | |
3688 | decode_shift (str, unrestrict) | |
d78c7dca NC |
3689 | char ** str; |
3690 | int unrestrict; | |
28e4f854 | 3691 | { |
4fb7971f | 3692 | const struct asm_shift_name * shift; |
d78c7dca NC |
3693 | char * p; |
3694 | char c; | |
28e4f854 | 3695 | |
d78c7dca | 3696 | skip_whitespace (* str); |
28e4f854 | 3697 | |
d78c7dca | 3698 | for (p = * str; isalpha (* p); p ++) |
252b5132 RH |
3699 | ; |
3700 | ||
d78c7dca | 3701 | if (p == * str) |
252b5132 RH |
3702 | { |
3703 | inst.error = _("Shift expression expected"); | |
3704 | return FAIL; | |
3705 | } | |
3706 | ||
d78c7dca NC |
3707 | c = * p; |
3708 | * p = '\0'; | |
4fb7971f | 3709 | shift = (const struct asm_shift_name *) hash_find (arm_shift_hsh, * str); |
d78c7dca | 3710 | * p = c; |
1dab94dd | 3711 | |
8cb8bcba | 3712 | if (shift == NULL) |
252b5132 | 3713 | { |
8cb8bcba NC |
3714 | inst.error = _("Shift expression expected"); |
3715 | return FAIL; | |
3716 | } | |
252b5132 | 3717 | |
8cb8bcba | 3718 | assert (shift->properties->index == shift_properties[shift->properties->index].index); |
1dab94dd | 3719 | |
8cb8bcba NC |
3720 | if (shift->properties->index == SHIFT_RRX) |
3721 | { | |
3722 | * str = p; | |
3723 | inst.instruction |= shift->properties->bit_field; | |
3724 | return SUCCESS; | |
3725 | } | |
28e4f854 | 3726 | |
8cb8bcba | 3727 | skip_whitespace (p); |
d78c7dca | 3728 | |
8cb8bcba NC |
3729 | if (unrestrict && reg_required_here (& p, 8) != FAIL) |
3730 | { | |
3731 | inst.instruction |= shift->properties->bit_field | SHIFT_BY_REG; | |
3732 | * str = p; | |
3733 | return SUCCESS; | |
3734 | } | |
3735 | else if (! is_immediate_prefix (* p)) | |
3736 | { | |
3737 | inst.error = (unrestrict | |
3738 | ? _("shift requires register or #expression") | |
3739 | : _("shift requires #expression")); | |
3740 | * str = p; | |
3741 | return FAIL; | |
3742 | } | |
1dab94dd | 3743 | |
8cb8bcba NC |
3744 | inst.error = NULL; |
3745 | p ++; | |
1dab94dd | 3746 | |
8cb8bcba NC |
3747 | if (my_get_expression (& inst.reloc.exp, & p)) |
3748 | return FAIL; | |
1dab94dd | 3749 | |
8cb8bcba NC |
3750 | /* Validate some simple #expressions. */ |
3751 | if (inst.reloc.exp.X_op == O_constant) | |
3752 | { | |
3753 | unsigned num = inst.reloc.exp.X_add_number; | |
252b5132 | 3754 | |
8cb8bcba NC |
3755 | /* Reject operations greater than 32. */ |
3756 | if (num > 32 | |
3757 | /* Reject a shift of 0 unless the mode allows it. */ | |
3758 | || (num == 0 && shift->properties->allows_0 == 0) | |
3759 | /* Reject a shift of 32 unless the mode allows it. */ | |
3760 | || (num == 32 && shift->properties->allows_32 == 0) | |
3761 | ) | |
3762 | { | |
4fb7971f NC |
3763 | /* As a special case we allow a shift of zero for |
3764 | modes that do not support it to be recoded as an | |
3765 | logical shift left of zero (ie nothing). We warn | |
3766 | about this though. */ | |
3767 | if (num == 0) | |
3768 | { | |
66102fe2 NC |
3769 | as_warn (_("Shift of 0 ignored.")); |
3770 | shift = & shift_names[0]; | |
4fb7971f NC |
3771 | assert (shift->properties->index == SHIFT_LSL); |
3772 | } | |
8cb8bcba | 3773 | else |
252b5132 | 3774 | { |
8cb8bcba NC |
3775 | inst.error = _("Invalid immediate shift"); |
3776 | return FAIL; | |
252b5132 | 3777 | } |
252b5132 | 3778 | } |
252b5132 | 3779 | |
8cb8bcba NC |
3780 | /* Shifts of 32 are encoded as 0, for those shifts that |
3781 | support it. */ | |
3782 | if (num == 32) | |
3783 | num = 0; | |
1dab94dd | 3784 | |
8cb8bcba NC |
3785 | inst.instruction |= (num << 7) | shift->properties->bit_field; |
3786 | } | |
3787 | else | |
3788 | { | |
3789 | inst.reloc.type = BFD_RELOC_ARM_SHIFT_IMM; | |
3790 | inst.reloc.pc_rel = 0; | |
3791 | inst.instruction |= shift->properties->bit_field; | |
3792 | } | |
1dab94dd | 3793 | |
8cb8bcba NC |
3794 | * str = p; |
3795 | return SUCCESS; | |
252b5132 RH |
3796 | } |
3797 | ||
28e4f854 | 3798 | /* Do those data_ops which can take a negative immediate constant |
d78c7dca NC |
3799 | by altering the instuction. A bit of a hack really. |
3800 | MOV <-> MVN | |
252b5132 RH |
3801 | AND <-> BIC |
3802 | ADC <-> SBC | |
3803 | by inverting the second operand, and | |
3804 | ADD <-> SUB | |
3805 | CMP <-> CMN | |
d78c7dca | 3806 | by negating the second operand. */ |
28e4f854 | 3807 | |
252b5132 RH |
3808 | static int |
3809 | negate_data_op (instruction, value) | |
d78c7dca NC |
3810 | unsigned long * instruction; |
3811 | unsigned long value; | |
252b5132 RH |
3812 | { |
3813 | int op, new_inst; | |
3814 | unsigned long negated, inverted; | |
3815 | ||
3816 | negated = validate_immediate (-value); | |
3817 | inverted = validate_immediate (~value); | |
3818 | ||
3819 | op = (*instruction >> DATA_OP_SHIFT) & 0xf; | |
3820 | switch (op) | |
3821 | { | |
28e4f854 KH |
3822 | /* First negates. */ |
3823 | case OPCODE_SUB: /* ADD <-> SUB */ | |
252b5132 RH |
3824 | new_inst = OPCODE_ADD; |
3825 | value = negated; | |
3826 | break; | |
3827 | ||
28e4f854 KH |
3828 | case OPCODE_ADD: |
3829 | new_inst = OPCODE_SUB; | |
252b5132 RH |
3830 | value = negated; |
3831 | break; | |
3832 | ||
28e4f854 | 3833 | case OPCODE_CMP: /* CMP <-> CMN */ |
252b5132 RH |
3834 | new_inst = OPCODE_CMN; |
3835 | value = negated; | |
3836 | break; | |
3837 | ||
28e4f854 KH |
3838 | case OPCODE_CMN: |
3839 | new_inst = OPCODE_CMP; | |
252b5132 RH |
3840 | value = negated; |
3841 | break; | |
3842 | ||
28e4f854 KH |
3843 | /* Now Inverted ops. */ |
3844 | case OPCODE_MOV: /* MOV <-> MVN */ | |
3845 | new_inst = OPCODE_MVN; | |
252b5132 RH |
3846 | value = inverted; |
3847 | break; | |
3848 | ||
28e4f854 | 3849 | case OPCODE_MVN: |
252b5132 RH |
3850 | new_inst = OPCODE_MOV; |
3851 | value = inverted; | |
3852 | break; | |
3853 | ||
28e4f854 KH |
3854 | case OPCODE_AND: /* AND <-> BIC */ |
3855 | new_inst = OPCODE_BIC; | |
252b5132 RH |
3856 | value = inverted; |
3857 | break; | |
3858 | ||
28e4f854 | 3859 | case OPCODE_BIC: |
252b5132 RH |
3860 | new_inst = OPCODE_AND; |
3861 | value = inverted; | |
3862 | break; | |
3863 | ||
28e4f854 KH |
3864 | case OPCODE_ADC: /* ADC <-> SBC */ |
3865 | new_inst = OPCODE_SBC; | |
252b5132 RH |
3866 | value = inverted; |
3867 | break; | |
3868 | ||
28e4f854 | 3869 | case OPCODE_SBC: |
252b5132 RH |
3870 | new_inst = OPCODE_ADC; |
3871 | value = inverted; | |
3872 | break; | |
3873 | ||
28e4f854 KH |
3874 | /* We cannot do anything. */ |
3875 | default: | |
252b5132 RH |
3876 | return FAIL; |
3877 | } | |
3878 | ||
684b81fa | 3879 | if (value == (unsigned) FAIL) |
252b5132 RH |
3880 | return FAIL; |
3881 | ||
3882 | *instruction &= OPCODE_MASK; | |
3883 | *instruction |= new_inst << DATA_OP_SHIFT; | |
28e4f854 | 3884 | return value; |
252b5132 RH |
3885 | } |
3886 | ||
3887 | static int | |
3888 | data_op2 (str) | |
d78c7dca | 3889 | char ** str; |
252b5132 RH |
3890 | { |
3891 | int value; | |
3892 | expressionS expr; | |
3893 | ||
d78c7dca | 3894 | skip_whitespace (* str); |
28e4f854 | 3895 | |
252b5132 RH |
3896 | if (reg_required_here (str, 0) != FAIL) |
3897 | { | |
3898 | if (skip_past_comma (str) == SUCCESS) | |
ae5ad4ad NC |
3899 | /* Shift operation on register. */ |
3900 | return decode_shift (str, NO_SHIFT_RESTRICT); | |
3901 | ||
252b5132 RH |
3902 | return SUCCESS; |
3903 | } | |
3904 | else | |
3905 | { | |
28e4f854 | 3906 | /* Immediate expression. */ |
252b5132 RH |
3907 | if (is_immediate_prefix (**str)) |
3908 | { | |
3909 | (*str)++; | |
3910 | inst.error = NULL; | |
28e4f854 | 3911 | |
252b5132 RH |
3912 | if (my_get_expression (&inst.reloc.exp, str)) |
3913 | return FAIL; | |
3914 | ||
3915 | if (inst.reloc.exp.X_add_symbol) | |
3916 | { | |
3917 | inst.reloc.type = BFD_RELOC_ARM_IMMEDIATE; | |
3918 | inst.reloc.pc_rel = 0; | |
3919 | } | |
3920 | else | |
3921 | { | |
3922 | if (skip_past_comma (str) == SUCCESS) | |
3923 | { | |
28e4f854 | 3924 | /* #x, y -- ie explicit rotation by Y. */ |
252b5132 RH |
3925 | if (my_get_expression (&expr, str)) |
3926 | return FAIL; | |
3927 | ||
3928 | if (expr.X_op != O_constant) | |
3929 | { | |
3930 | inst.error = _("Constant expression expected"); | |
3931 | return FAIL; | |
3932 | } | |
28e4f854 KH |
3933 | |
3934 | /* Rotate must be a multiple of 2. */ | |
252b5132 RH |
3935 | if (((unsigned) expr.X_add_number) > 30 |
3936 | || (expr.X_add_number & 1) != 0 | |
3937 | || ((unsigned) inst.reloc.exp.X_add_number) > 255) | |
3938 | { | |
3939 | inst.error = _("Invalid constant"); | |
3940 | return FAIL; | |
3941 | } | |
3942 | inst.instruction |= INST_IMMEDIATE; | |
3943 | inst.instruction |= inst.reloc.exp.X_add_number; | |
3944 | inst.instruction |= expr.X_add_number << 7; | |
3945 | return SUCCESS; | |
3946 | } | |
3947 | ||
28e4f854 | 3948 | /* Implicit rotation, select a suitable one. */ |
252b5132 RH |
3949 | value = validate_immediate (inst.reloc.exp.X_add_number); |
3950 | ||
3951 | if (value == FAIL) | |
3952 | { | |
28e4f854 | 3953 | /* Can't be done. Perhaps the code reads something like |
d78c7dca | 3954 | "add Rd, Rn, #-n", where "sub Rd, Rn, #n" would be OK. */ |
252b5132 RH |
3955 | if ((value = negate_data_op (&inst.instruction, |
3956 | inst.reloc.exp.X_add_number)) | |
3957 | == FAIL) | |
3958 | { | |
3959 | inst.error = _("Invalid constant"); | |
3960 | return FAIL; | |
3961 | } | |
3962 | } | |
3963 | ||
3964 | inst.instruction |= value; | |
3965 | } | |
3966 | ||
3967 | inst.instruction |= INST_IMMEDIATE; | |
3968 | return SUCCESS; | |
3969 | } | |
3970 | ||
3971 | (*str)++; | |
3972 | inst.error = _("Register or shift expression expected"); | |
3973 | return FAIL; | |
3974 | } | |
3975 | } | |
3976 | ||
3977 | static int | |
3978 | fp_op2 (str) | |
d78c7dca | 3979 | char ** str; |
252b5132 | 3980 | { |
d78c7dca | 3981 | skip_whitespace (* str); |
252b5132 RH |
3982 | |
3983 | if (fp_reg_required_here (str, 0) != FAIL) | |
3984 | return SUCCESS; | |
3985 | else | |
3986 | { | |
28e4f854 | 3987 | /* Immediate expression. */ |
252b5132 RH |
3988 | if (*((*str)++) == '#') |
3989 | { | |
3990 | int i; | |
3991 | ||
3992 | inst.error = NULL; | |
276b1dc2 | 3993 | |
d78c7dca | 3994 | skip_whitespace (* str); |
252b5132 | 3995 | |
28e4f854 KH |
3996 | /* First try and match exact strings, this is to guarantee |
3997 | that some formats will work even for cross assembly. */ | |
252b5132 RH |
3998 | |
3999 | for (i = 0; fp_const[i]; i++) | |
4000 | { | |
4001 | if (strncmp (*str, fp_const[i], strlen (fp_const[i])) == 0) | |
4002 | { | |
4003 | char *start = *str; | |
4004 | ||
4005 | *str += strlen (fp_const[i]); | |
b75c0c92 | 4006 | if (is_end_of_line[(unsigned char) **str]) |
252b5132 RH |
4007 | { |
4008 | inst.instruction |= i + 8; | |
4009 | return SUCCESS; | |
4010 | } | |
4011 | *str = start; | |
4012 | } | |
4013 | } | |
4014 | ||
4015 | /* Just because we didn't get a match doesn't mean that the | |
4016 | constant isn't valid, just that it is in a format that we | |
4017 | don't automatically recognize. Try parsing it with | |
4018 | the standard expression routines. */ | |
4019 | if ((i = my_get_float_expression (str)) >= 0) | |
4020 | { | |
4021 | inst.instruction |= i + 8; | |
4022 | return SUCCESS; | |
4023 | } | |
4024 | ||
4025 | inst.error = _("Invalid floating point immediate expression"); | |
4026 | return FAIL; | |
4027 | } | |
28e4f854 KH |
4028 | inst.error = |
4029 | _("Floating point register or immediate expression expected"); | |
252b5132 RH |
4030 | return FAIL; |
4031 | } | |
4032 | } | |
4033 | ||
4034 | static void | |
4035 | do_arit (str, flags) | |
d78c7dca | 4036 | char * str; |
252b5132 RH |
4037 | unsigned long flags; |
4038 | { | |
ae5ad4ad | 4039 | skip_whitespace (str); |
252b5132 RH |
4040 | |
4041 | if (reg_required_here (&str, 12) == FAIL | |
4042 | || skip_past_comma (&str) == FAIL | |
4043 | || reg_required_here (&str, 16) == FAIL | |
4044 | || skip_past_comma (&str) == FAIL | |
4045 | || data_op2 (&str) == FAIL) | |
4046 | { | |
4047 | if (!inst.error) | |
90ca882f | 4048 | inst.error = BAD_ARGS; |
252b5132 RH |
4049 | return; |
4050 | } | |
4051 | ||
4052 | inst.instruction |= flags; | |
4053 | end_of_line (str); | |
4054 | return; | |
4055 | } | |
4056 | ||
4057 | static void | |
4058 | do_adr (str, flags) | |
d78c7dca | 4059 | char * str; |
252b5132 RH |
4060 | unsigned long flags; |
4061 | { | |
4062 | /* This is a pseudo-op of the form "adr rd, label" to be converted | |
43f05576 | 4063 | into a relative address of the form "add rd, pc, #label-.-8". */ |
ae5ad4ad | 4064 | skip_whitespace (str); |
252b5132 RH |
4065 | |
4066 | if (reg_required_here (&str, 12) == FAIL | |
4067 | || skip_past_comma (&str) == FAIL | |
4068 | || my_get_expression (&inst.reloc.exp, &str)) | |
4069 | { | |
4070 | if (!inst.error) | |
90ca882f | 4071 | inst.error = BAD_ARGS; |
252b5132 RH |
4072 | return; |
4073 | } | |
28e4f854 | 4074 | |
252b5132 RH |
4075 | /* Frag hacking will turn this into a sub instruction if the offset turns |
4076 | out to be negative. */ | |
4077 | inst.reloc.type = BFD_RELOC_ARM_IMMEDIATE; | |
43f05576 | 4078 | inst.reloc.exp.X_add_number -= 8; /* PC relative adjust. */ |
252b5132 RH |
4079 | inst.reloc.pc_rel = 1; |
4080 | inst.instruction |= flags; | |
28e4f854 | 4081 | |
252b5132 | 4082 | end_of_line (str); |
252b5132 RH |
4083 | } |
4084 | ||
49a5575c NC |
4085 | static void |
4086 | do_adrl (str, flags) | |
d78c7dca | 4087 | char * str; |
49a5575c NC |
4088 | unsigned long flags; |
4089 | { | |
4090 | /* This is a pseudo-op of the form "adrl rd, label" to be converted | |
4091 | into a relative address of the form: | |
4092 | add rd, pc, #low(label-.-8)" | |
28e4f854 | 4093 | add rd, rd, #high(label-.-8)" */ |
49a5575c | 4094 | |
ae5ad4ad | 4095 | skip_whitespace (str); |
49a5575c | 4096 | |
d78c7dca NC |
4097 | if (reg_required_here (& str, 12) == FAIL |
4098 | || skip_past_comma (& str) == FAIL | |
4099 | || my_get_expression (& inst.reloc.exp, & str)) | |
49a5575c NC |
4100 | { |
4101 | if (!inst.error) | |
90ca882f | 4102 | inst.error = BAD_ARGS; |
49a5575c NC |
4103 | return; |
4104 | } | |
28e4f854 | 4105 | |
49a5575c | 4106 | end_of_line (str); |
28e4f854 | 4107 | |
49a5575c NC |
4108 | /* Frag hacking will turn this into a sub instruction if the offset turns |
4109 | out to be negative. */ | |
4110 | inst.reloc.type = BFD_RELOC_ARM_ADRL_IMMEDIATE; | |
28e4f854 | 4111 | inst.reloc.exp.X_add_number -= 8; /* PC relative adjust */ |
49a5575c NC |
4112 | inst.reloc.pc_rel = 1; |
4113 | inst.instruction |= flags; | |
4114 | inst.size = INSN_SIZE * 2; | |
28e4f854 | 4115 | |
49a5575c NC |
4116 | return; |
4117 | } | |
4118 | ||
252b5132 RH |
4119 | static void |
4120 | do_cmp (str, flags) | |
d78c7dca | 4121 | char * str; |
252b5132 RH |
4122 | unsigned long flags; |
4123 | { | |
ae5ad4ad | 4124 | skip_whitespace (str); |
252b5132 RH |
4125 | |
4126 | if (reg_required_here (&str, 16) == FAIL) | |
4127 | { | |
4128 | if (!inst.error) | |
90ca882f | 4129 | inst.error = BAD_ARGS; |
252b5132 RH |
4130 | return; |
4131 | } | |
4132 | ||
4133 | if (skip_past_comma (&str) == FAIL | |
4134 | || data_op2 (&str) == FAIL) | |
4135 | { | |
4136 | if (!inst.error) | |
90ca882f | 4137 | inst.error = BAD_ARGS; |
252b5132 RH |
4138 | return; |
4139 | } | |
4140 | ||
4141 | inst.instruction |= flags; | |
4142 | if ((flags & 0x0000f000) == 0) | |
4143 | inst.instruction |= CONDS_BIT; | |
4144 | ||
4145 | end_of_line (str); | |
4146 | return; | |
4147 | } | |
4148 | ||
4149 | static void | |
4150 | do_mov (str, flags) | |
d78c7dca | 4151 | char * str; |
252b5132 RH |
4152 | unsigned long flags; |
4153 | { | |
ae5ad4ad | 4154 | skip_whitespace (str); |
252b5132 RH |
4155 | |
4156 | if (reg_required_here (&str, 12) == FAIL) | |
4157 | { | |
4158 | if (!inst.error) | |
90ca882f | 4159 | inst.error = BAD_ARGS; |
252b5132 RH |
4160 | return; |
4161 | } | |
4162 | ||
4163 | if (skip_past_comma (&str) == FAIL | |
4164 | || data_op2 (&str) == FAIL) | |
4165 | { | |
4166 | if (!inst.error) | |
90ca882f | 4167 | inst.error = BAD_ARGS; |
252b5132 RH |
4168 | return; |
4169 | } | |
4170 | ||
4171 | inst.instruction |= flags; | |
4172 | end_of_line (str); | |
4173 | return; | |
4174 | } | |
4175 | ||
4176 | static int | |
4177 | ldst_extend (str, hwse) | |
d78c7dca NC |
4178 | char ** str; |
4179 | int hwse; | |
252b5132 RH |
4180 | { |
4181 | int add = INDEX_UP; | |
4182 | ||
4183 | switch (**str) | |
4184 | { | |
4185 | case '#': | |
4186 | case '$': | |
4187 | (*str)++; | |
d78c7dca | 4188 | if (my_get_expression (& inst.reloc.exp, str)) |
252b5132 RH |
4189 | return FAIL; |
4190 | ||
4191 | if (inst.reloc.exp.X_op == O_constant) | |
4192 | { | |
4193 | int value = inst.reloc.exp.X_add_number; | |
4194 | ||
28e4f854 KH |
4195 | if ((hwse && (value < -255 || value > 255)) |
4196 | || (value < -4095 || value > 4095)) | |
252b5132 RH |
4197 | { |
4198 | inst.error = _("address offset too large"); | |
4199 | return FAIL; | |
4200 | } | |
4201 | ||
4202 | if (value < 0) | |
4203 | { | |
4204 | value = -value; | |
4205 | add = 0; | |
4206 | } | |
4207 | ||
28e4f854 KH |
4208 | /* Halfword and signextension instructions have the |
4209 | immediate value split across bits 11..8 and bits 3..0. */ | |
4210 | if (hwse) | |
4211 | inst.instruction |= (add | HWOFFSET_IMM | |
4212 | | ((value >> 4) << 8) | (value & 0xF)); | |
4213 | else | |
4214 | inst.instruction |= add | value; | |
252b5132 RH |
4215 | } |
4216 | else | |
4217 | { | |
28e4f854 KH |
4218 | if (hwse) |
4219 | { | |
4220 | inst.instruction |= HWOFFSET_IMM; | |
4221 | inst.reloc.type = BFD_RELOC_ARM_OFFSET_IMM8; | |
4222 | } | |
4223 | else | |
4224 | inst.reloc.type = BFD_RELOC_ARM_OFFSET_IMM; | |
252b5132 RH |
4225 | inst.reloc.pc_rel = 0; |
4226 | } | |
4227 | return SUCCESS; | |
4228 | ||
4229 | case '-': | |
28e4f854 KH |
4230 | add = 0; |
4231 | /* Fall through. */ | |
4232 | ||
252b5132 | 4233 | case '+': |
28e4f854 KH |
4234 | (*str)++; |
4235 | /* Fall through. */ | |
4236 | ||
252b5132 RH |
4237 | default: |
4238 | if (reg_required_here (str, 0) == FAIL) | |
4239 | return FAIL; | |
4240 | ||
4241 | if (hwse) | |
28e4f854 | 4242 | inst.instruction |= add; |
252b5132 | 4243 | else |
28e4f854 KH |
4244 | { |
4245 | inst.instruction |= add | OFFSET_REG; | |
4246 | if (skip_past_comma (str) == SUCCESS) | |
4247 | return decode_shift (str, SHIFT_RESTRICT); | |
4248 | } | |
252b5132 RH |
4249 | |
4250 | return SUCCESS; | |
4251 | } | |
4252 | } | |
4253 | ||
4254 | static void | |
4255 | do_ldst (str, flags) | |
85a39694 | 4256 | char * str; |
252b5132 RH |
4257 | unsigned long flags; |
4258 | { | |
4259 | int halfword = 0; | |
4260 | int pre_inc = 0; | |
4261 | int conflict_reg; | |
4262 | int value; | |
4263 | ||
4264 | /* This is not ideal, but it is the simplest way of dealing with the | |
4265 | ARM7T halfword instructions (since they use a different | |
28e4f854 | 4266 | encoding, but the same mnemonic): */ |
3d103319 ILT |
4267 | halfword = (flags & 0x80000000) != 0; |
4268 | if (halfword) | |
252b5132 RH |
4269 | { |
4270 | /* This is actually a load/store of a halfword, or a | |
28e4f854 | 4271 | signed-extension load. */ |
077b8428 | 4272 | if ((cpu_variant & ARM_EXT_HALFWORD) == 0) |
28e4f854 KH |
4273 | { |
4274 | inst.error | |
252b5132 | 4275 | = _("Processor does not support halfwords or signed bytes"); |
28e4f854 KH |
4276 | return; |
4277 | } | |
252b5132 | 4278 | |
28e4f854 KH |
4279 | inst.instruction = ((inst.instruction & COND_MASK) |
4280 | | (flags & ~COND_MASK)); | |
252b5132 RH |
4281 | |
4282 | flags = 0; | |
4283 | } | |
4284 | ||
ae5ad4ad | 4285 | skip_whitespace (str); |
28e4f854 | 4286 | |
d78c7dca | 4287 | if ((conflict_reg = reg_required_here (& str, 12)) == FAIL) |
252b5132 RH |
4288 | { |
4289 | if (!inst.error) | |
90ca882f | 4290 | inst.error = BAD_ARGS; |
252b5132 RH |
4291 | return; |
4292 | } | |
4293 | ||
d78c7dca | 4294 | if (skip_past_comma (& str) == FAIL) |
252b5132 RH |
4295 | { |
4296 | inst.error = _("Address expected"); | |
4297 | return; | |
4298 | } | |
4299 | ||
4300 | if (*str == '[') | |
4301 | { | |
4302 | int reg; | |
4303 | ||
4304 | str++; | |
276b1dc2 | 4305 | |
ae5ad4ad | 4306 | skip_whitespace (str); |
252b5132 RH |
4307 | |
4308 | if ((reg = reg_required_here (&str, 16)) == FAIL) | |
4309 | return; | |
4310 | ||
11450271 NC |
4311 | /* Conflicts can occur on stores as well as loads. */ |
4312 | conflict_reg = (conflict_reg == reg); | |
252b5132 | 4313 | |
ae5ad4ad | 4314 | skip_whitespace (str); |
252b5132 RH |
4315 | |
4316 | if (*str == ']') | |
4317 | { | |
d78c7dca | 4318 | str ++; |
28e4f854 | 4319 | |
252b5132 RH |
4320 | if (skip_past_comma (&str) == SUCCESS) |
4321 | { | |
28e4f854 | 4322 | /* [Rn],... (post inc) */ |
252b5132 RH |
4323 | if (ldst_extend (&str, halfword) == FAIL) |
4324 | return; | |
4325 | if (conflict_reg) | |
b1e2e654 PB |
4326 | { |
4327 | if (flags & TRANS_BIT) | |
4328 | as_warn (_("Rn and Rd must be different in %s"), | |
4329 | ((inst.instruction & LOAD_BIT) | |
4330 | ? "LDRT" : "STRT")); | |
4331 | else | |
4332 | as_warn (_("%s register same as write-back base"), | |
4333 | ((inst.instruction & LOAD_BIT) | |
4334 | ? _("destination") : _("source"))); | |
4335 | } | |
252b5132 RH |
4336 | } |
4337 | else | |
4338 | { | |
28e4f854 KH |
4339 | /* [Rn] */ |
4340 | if (halfword) | |
4341 | inst.instruction |= HWOFFSET_IMM; | |
252b5132 | 4342 | |
28e4f854 | 4343 | skip_whitespace (str); |
252b5132 | 4344 | |
28e4f854 KH |
4345 | if (*str == '!') |
4346 | { | |
4347 | if (conflict_reg) | |
4348 | as_warn (_("%s register same as write-back base"), | |
4349 | ((inst.instruction & LOAD_BIT) | |
4350 | ? _("destination") : _("source"))); | |
4351 | str++; | |
4352 | inst.instruction |= WRITE_BACK; | |
4353 | } | |
252b5132 RH |
4354 | |
4355 | flags |= INDEX_UP; | |
b1e2e654 PB |
4356 | if (flags & TRANS_BIT) |
4357 | { | |
4358 | if (conflict_reg) | |
4359 | as_warn (_("Rn and Rd must be different in %s"), | |
4360 | ((inst.instruction & LOAD_BIT) | |
4361 | ? "LDRT" : "STRT")); | |
4362 | } | |
4363 | else | |
4364 | pre_inc = 1; | |
252b5132 RH |
4365 | } |
4366 | } | |
4367 | else | |
4368 | { | |
28e4f854 | 4369 | /* [Rn,...] */ |
252b5132 RH |
4370 | if (skip_past_comma (&str) == FAIL) |
4371 | { | |
4372 | inst.error = _("pre-indexed expression expected"); | |
4373 | return; | |
4374 | } | |
4375 | ||
4376 | pre_inc = 1; | |
4377 | if (ldst_extend (&str, halfword) == FAIL) | |
4378 | return; | |
4379 | ||
ae5ad4ad | 4380 | skip_whitespace (str); |
252b5132 RH |
4381 | |
4382 | if (*str++ != ']') | |
4383 | { | |
4384 | inst.error = _("missing ]"); | |
4385 | return; | |
4386 | } | |
4387 | ||
ae5ad4ad | 4388 | skip_whitespace (str); |
252b5132 RH |
4389 | |
4390 | if (*str == '!') | |
4391 | { | |
4392 | if (conflict_reg) | |
11450271 | 4393 | as_warn (_("%s register same as write-back base"), |
28e4f854 KH |
4394 | ((inst.instruction & LOAD_BIT) |
4395 | ? _("destination") : _("source"))); | |
252b5132 RH |
4396 | str++; |
4397 | inst.instruction |= WRITE_BACK; | |
4398 | } | |
4399 | } | |
4400 | } | |
4401 | else if (*str == '=') | |
4402 | { | |
28e4f854 | 4403 | /* Parse an "ldr Rd, =expr" instruction; this is another pseudo op. */ |
252b5132 RH |
4404 | str++; |
4405 | ||
ae5ad4ad | 4406 | skip_whitespace (str); |
252b5132 RH |
4407 | |
4408 | if (my_get_expression (&inst.reloc.exp, &str)) | |
4409 | return; | |
4410 | ||
4411 | if (inst.reloc.exp.X_op != O_constant | |
4412 | && inst.reloc.exp.X_op != O_symbol) | |
4413 | { | |
4414 | inst.error = _("Constant expression expected"); | |
4415 | return; | |
4416 | } | |
4417 | ||
4418 | if (inst.reloc.exp.X_op == O_constant | |
28e4f854 | 4419 | && (value = validate_immediate (inst.reloc.exp.X_add_number)) != FAIL) |
252b5132 | 4420 | { |
28e4f854 | 4421 | /* This can be done with a mov instruction. */ |
252b5132 RH |
4422 | inst.instruction &= LITERAL_MASK; |
4423 | inst.instruction |= INST_IMMEDIATE | (OPCODE_MOV << DATA_OP_SHIFT); | |
4424 | inst.instruction |= (flags & COND_MASK) | (value & 0xfff); | |
28e4f854 KH |
4425 | end_of_line (str); |
4426 | return; | |
252b5132 RH |
4427 | } |
4428 | else | |
4429 | { | |
28e4f854 | 4430 | /* Insert into literal pool. */ |
252b5132 RH |
4431 | if (add_to_lit_pool () == FAIL) |
4432 | { | |
4433 | if (!inst.error) | |
28e4f854 | 4434 | inst.error = _("literal pool insertion failed"); |
252b5132 RH |
4435 | return; |
4436 | } | |
4437 | ||
28e4f854 KH |
4438 | /* Change the instruction exp to point to the pool. */ |
4439 | if (halfword) | |
4440 | { | |
4441 | inst.instruction |= HWOFFSET_IMM; | |
4442 | inst.reloc.type = BFD_RELOC_ARM_HWLITERAL; | |
4443 | } | |
4444 | else | |
252b5132 RH |
4445 | inst.reloc.type = BFD_RELOC_ARM_LITERAL; |
4446 | inst.reloc.pc_rel = 1; | |
4447 | inst.instruction |= (REG_PC << 16); | |
28e4f854 | 4448 | pre_inc = 1; |
252b5132 RH |
4449 | } |
4450 | } | |
4451 | else | |
4452 | { | |
4453 | if (my_get_expression (&inst.reloc.exp, &str)) | |
4454 | return; | |
4455 | ||
4456 | if (halfword) | |
28e4f854 KH |
4457 | { |
4458 | inst.instruction |= HWOFFSET_IMM; | |
4459 | inst.reloc.type = BFD_RELOC_ARM_OFFSET_IMM8; | |
4460 | } | |
252b5132 | 4461 | else |
28e4f854 | 4462 | inst.reloc.type = BFD_RELOC_ARM_OFFSET_IMM; |
056350c6 | 4463 | #ifndef TE_WINCE |
28e4f854 KH |
4464 | /* PC rel adjust. */ |
4465 | inst.reloc.exp.X_add_number -= 8; | |
056350c6 | 4466 | #endif |
252b5132 RH |
4467 | inst.reloc.pc_rel = 1; |
4468 | inst.instruction |= (REG_PC << 16); | |
4469 | pre_inc = 1; | |
4470 | } | |
28e4f854 | 4471 | |
252b5132 RH |
4472 | if (pre_inc && (flags & TRANS_BIT)) |
4473 | inst.error = _("Pre-increment instruction with translate"); | |
4474 | ||
4475 | inst.instruction |= flags | (pre_inc ? PRE_INDEX : 0); | |
4476 | end_of_line (str); | |
4477 | return; | |
4478 | } | |
4479 | ||
4480 | static long | |
4481 | reg_list (strp) | |
d78c7dca | 4482 | char ** strp; |
252b5132 | 4483 | { |
d78c7dca NC |
4484 | char * str = * strp; |
4485 | long range = 0; | |
4486 | int another_range; | |
252b5132 | 4487 | |
28e4f854 | 4488 | /* We come back here if we get ranges concatenated by '+' or '|'. */ |
252b5132 RH |
4489 | do |
4490 | { | |
4491 | another_range = 0; | |
4492 | ||
4493 | if (*str == '{') | |
4494 | { | |
4495 | int in_range = 0; | |
4496 | int cur_reg = -1; | |
28e4f854 | 4497 | |
252b5132 RH |
4498 | str++; |
4499 | do | |
4500 | { | |
4501 | int reg; | |
28e4f854 | 4502 | |
ae5ad4ad | 4503 | skip_whitespace (str); |
252b5132 | 4504 | |
d78c7dca | 4505 | if ((reg = reg_required_here (& str, -1)) == FAIL) |
252b5132 | 4506 | return FAIL; |
28e4f854 | 4507 | |
252b5132 RH |
4508 | if (in_range) |
4509 | { | |
4510 | int i; | |
28e4f854 | 4511 | |
252b5132 RH |
4512 | if (reg <= cur_reg) |
4513 | { | |
4514 | inst.error = _("Bad range in register list"); | |
4515 | return FAIL; | |
4516 | } | |
4517 | ||
4518 | for (i = cur_reg + 1; i < reg; i++) | |
4519 | { | |
4520 | if (range & (1 << i)) | |
28e4f854 | 4521 | as_tsktsk |
252b5132 RH |
4522 | (_("Warning: Duplicated register (r%d) in register list"), |
4523 | i); | |
4524 | else | |
4525 | range |= 1 << i; | |
4526 | } | |
4527 | in_range = 0; | |
4528 | } | |
4529 | ||
4530 | if (range & (1 << reg)) | |
4531 | as_tsktsk (_("Warning: Duplicated register (r%d) in register list"), | |
4532 | reg); | |
4533 | else if (reg <= cur_reg) | |
4534 | as_tsktsk (_("Warning: Register range not in ascending order")); | |
4535 | ||
4536 | range |= 1 << reg; | |
4537 | cur_reg = reg; | |
28e4f854 KH |
4538 | } |
4539 | while (skip_past_comma (&str) != FAIL | |
4540 | || (in_range = 1, *str++ == '-')); | |
252b5132 | 4541 | str--; |
ae5ad4ad | 4542 | skip_whitespace (str); |
252b5132 RH |
4543 | |
4544 | if (*str++ != '}') | |
4545 | { | |
4546 | inst.error = _("Missing `}'"); | |
4547 | return FAIL; | |
4548 | } | |
4549 | } | |
4550 | else | |
4551 | { | |
4552 | expressionS expr; | |
4553 | ||
4554 | if (my_get_expression (&expr, &str)) | |
4555 | return FAIL; | |
4556 | ||
4557 | if (expr.X_op == O_constant) | |
4558 | { | |
28e4f854 | 4559 | if (expr.X_add_number |
252b5132 RH |
4560 | != (expr.X_add_number & 0x0000ffff)) |
4561 | { | |
4562 | inst.error = _("invalid register mask"); | |
4563 | return FAIL; | |
4564 | } | |
4565 | ||
4566 | if ((range & expr.X_add_number) != 0) | |
4567 | { | |
4568 | int regno = range & expr.X_add_number; | |
4569 | ||
4570 | regno &= -regno; | |
4571 | regno = (1 << regno) - 1; | |
28e4f854 | 4572 | as_tsktsk |
252b5132 RH |
4573 | (_("Warning: Duplicated register (r%d) in register list"), |
4574 | regno); | |
4575 | } | |
4576 | ||
4577 | range |= expr.X_add_number; | |
4578 | } | |
4579 | else | |
4580 | { | |
4581 | if (inst.reloc.type != 0) | |
4582 | { | |
4583 | inst.error = _("expression too complex"); | |
4584 | return FAIL; | |
4585 | } | |
4586 | ||
4587 | memcpy (&inst.reloc.exp, &expr, sizeof (expressionS)); | |
4588 | inst.reloc.type = BFD_RELOC_ARM_MULTI; | |
4589 | inst.reloc.pc_rel = 0; | |
4590 | } | |
4591 | } | |
4592 | ||
ae5ad4ad | 4593 | skip_whitespace (str); |
252b5132 RH |
4594 | |
4595 | if (*str == '|' || *str == '+') | |
4596 | { | |
4597 | str++; | |
4598 | another_range = 1; | |
4599 | } | |
28e4f854 KH |
4600 | } |
4601 | while (another_range); | |
252b5132 RH |
4602 | |
4603 | *strp = str; | |
4604 | return range; | |
4605 | } | |
4606 | ||
4607 | static void | |
4608 | do_ldmstm (str, flags) | |
d78c7dca | 4609 | char * str; |
252b5132 RH |
4610 | unsigned long flags; |
4611 | { | |
4612 | int base_reg; | |
4613 | long range; | |
4614 | ||
ae5ad4ad | 4615 | skip_whitespace (str); |
252b5132 RH |
4616 | |
4617 | if ((base_reg = reg_required_here (&str, 16)) == FAIL) | |
4618 | return; | |
4619 | ||
4620 | if (base_reg == REG_PC) | |
4621 | { | |
4622 | inst.error = _("r15 not allowed as base register"); | |
4623 | return; | |
4624 | } | |
4625 | ||
ae5ad4ad NC |
4626 | skip_whitespace (str); |
4627 | ||
252b5132 RH |
4628 | if (*str == '!') |
4629 | { | |
4630 | flags |= WRITE_BACK; | |
4631 | str++; | |
4632 | } | |
4633 | ||
4634 | if (skip_past_comma (&str) == FAIL | |
4635 | || (range = reg_list (&str)) == FAIL) | |
4636 | { | |
4637 | if (! inst.error) | |
90ca882f | 4638 | inst.error = BAD_ARGS; |
252b5132 RH |
4639 | return; |
4640 | } | |
4641 | ||
4642 | if (*str == '^') | |
4643 | { | |
4644 | str++; | |
913f265c | 4645 | flags |= LDM_TYPE_2_OR_3; |
252b5132 RH |
4646 | } |
4647 | ||
4648 | inst.instruction |= flags | range; | |
4649 | end_of_line (str); | |
4650 | return; | |
4651 | } | |
4652 | ||
4653 | static void | |
4654 | do_swi (str, flags) | |
d78c7dca | 4655 | char * str; |
252b5132 RH |
4656 | unsigned long flags; |
4657 | { | |
ae5ad4ad | 4658 | skip_whitespace (str); |
28e4f854 | 4659 | |
252b5132 RH |
4660 | /* Allow optional leading '#'. */ |
4661 | if (is_immediate_prefix (*str)) | |
4662 | str++; | |
4663 | ||
d78c7dca | 4664 | if (my_get_expression (& inst.reloc.exp, & str)) |
252b5132 RH |
4665 | return; |
4666 | ||
4667 | inst.reloc.type = BFD_RELOC_ARM_SWI; | |
4668 | inst.reloc.pc_rel = 0; | |
4669 | inst.instruction |= flags; | |
28e4f854 | 4670 | |
252b5132 | 4671 | end_of_line (str); |
28e4f854 | 4672 | |
252b5132 RH |
4673 | return; |
4674 | } | |
4675 | ||
4676 | static void | |
4677 | do_swap (str, flags) | |
d78c7dca | 4678 | char * str; |
252b5132 RH |
4679 | unsigned long flags; |
4680 | { | |
4681 | int reg; | |
28e4f854 | 4682 | |
ae5ad4ad | 4683 | skip_whitespace (str); |
252b5132 RH |
4684 | |
4685 | if ((reg = reg_required_here (&str, 12)) == FAIL) | |
4686 | return; | |
4687 | ||
4688 | if (reg == REG_PC) | |
4689 | { | |
4690 | inst.error = _("r15 not allowed in swap"); | |
4691 | return; | |
4692 | } | |
4693 | ||
4694 | if (skip_past_comma (&str) == FAIL | |
4695 | || (reg = reg_required_here (&str, 0)) == FAIL) | |
4696 | { | |
4697 | if (!inst.error) | |
90ca882f | 4698 | inst.error = BAD_ARGS; |
252b5132 RH |
4699 | return; |
4700 | } | |
4701 | ||
4702 | if (reg == REG_PC) | |
4703 | { | |
4704 | inst.error = _("r15 not allowed in swap"); | |
4705 | return; | |
4706 | } | |
4707 | ||
4708 | if (skip_past_comma (&str) == FAIL | |
4709 | || *str++ != '[') | |
4710 | { | |
90ca882f | 4711 | inst.error = BAD_ARGS; |
252b5132 RH |
4712 | return; |
4713 | } | |
4714 | ||
ae5ad4ad | 4715 | skip_whitespace (str); |
252b5132 RH |
4716 | |
4717 | if ((reg = reg_required_here (&str, 16)) == FAIL) | |
4718 | return; | |
4719 | ||
4720 | if (reg == REG_PC) | |
4721 | { | |
90ca882f | 4722 | inst.error = BAD_PC; |
252b5132 RH |
4723 | return; |
4724 | } | |
4725 | ||
ae5ad4ad | 4726 | skip_whitespace (str); |
252b5132 RH |
4727 | |
4728 | if (*str++ != ']') | |
4729 | { | |
4730 | inst.error = _("missing ]"); | |
4731 | return; | |
4732 | } | |
4733 | ||
4734 | inst.instruction |= flags; | |
4735 | end_of_line (str); | |
4736 | return; | |
4737 | } | |
4738 | ||
4739 | static void | |
4740 | do_branch (str, flags) | |
d78c7dca | 4741 | char * str; |
684b81fa | 4742 | unsigned long flags ATTRIBUTE_UNUSED; |
252b5132 RH |
4743 | { |
4744 | if (my_get_expression (&inst.reloc.exp, &str)) | |
4745 | return; | |
28e4f854 | 4746 | |
252b5132 RH |
4747 | #ifdef OBJ_ELF |
4748 | { | |
d78c7dca | 4749 | char * save_in; |
28e4f854 KH |
4750 | |
4751 | /* ScottB: February 5, 1998 - Check to see of PLT32 reloc | |
4752 | required for the instruction. */ | |
4753 | ||
4754 | /* arm_parse_reloc () works on input_line_pointer. | |
252b5132 RH |
4755 | We actually want to parse the operands to the branch instruction |
4756 | passed in 'str'. Save the input pointer and restore it later. */ | |
4757 | save_in = input_line_pointer; | |
4758 | input_line_pointer = str; | |
4759 | if (inst.reloc.exp.X_op == O_symbol | |
4760 | && *str == '(' | |
4761 | && arm_parse_reloc () == BFD_RELOC_ARM_PLT32) | |
4762 | { | |
4763 | inst.reloc.type = BFD_RELOC_ARM_PLT32; | |
4764 | inst.reloc.pc_rel = 0; | |
4765 | /* Modify str to point to after parsed operands, otherwise | |
4766 | end_of_line() will complain about the (PLT) left in str. */ | |
4767 | str = input_line_pointer; | |
4768 | } | |
4769 | else | |
4770 | { | |
4771 | inst.reloc.type = BFD_RELOC_ARM_PCREL_BRANCH; | |
4772 | inst.reloc.pc_rel = 1; | |
4773 | } | |
4774 | input_line_pointer = save_in; | |
4775 | } | |
4776 | #else | |
4777 | inst.reloc.type = BFD_RELOC_ARM_PCREL_BRANCH; | |
4778 | inst.reloc.pc_rel = 1; | |
28e4f854 KH |
4779 | #endif /* OBJ_ELF */ |
4780 | ||
252b5132 RH |
4781 | end_of_line (str); |
4782 | return; | |
4783 | } | |
4784 | ||
4785 | static void | |
4786 | do_bx (str, flags) | |
d78c7dca | 4787 | char * str; |
684b81fa | 4788 | unsigned long flags ATTRIBUTE_UNUSED; |
252b5132 RH |
4789 | { |
4790 | int reg; | |
4791 | ||
ae5ad4ad | 4792 | skip_whitespace (str); |
252b5132 RH |
4793 | |
4794 | if ((reg = reg_required_here (&str, 0)) == FAIL) | |
92a66162 DL |
4795 | { |
4796 | inst.error = BAD_ARGS; | |
4797 | return; | |
4798 | } | |
252b5132 | 4799 | |
046b3b54 | 4800 | /* Note - it is not illegal to do a "bx pc". Useless, but not illegal. */ |
70485b5c NC |
4801 | if (reg == REG_PC) |
4802 | as_tsktsk (_("Use of r15 in bx in ARM mode is not really useful")); | |
252b5132 RH |
4803 | |
4804 | end_of_line (str); | |
252b5132 RH |
4805 | } |
4806 | ||
4807 | static void | |
4808 | do_cdp (str, flags) | |
d78c7dca | 4809 | char * str; |
684b81fa | 4810 | unsigned long flags ATTRIBUTE_UNUSED; |
252b5132 RH |
4811 | { |
4812 | /* Co-processor data operation. | |
4813 | Format: CDP{cond} CP#,<expr>,CRd,CRn,CRm{,<expr>} */ | |
ae5ad4ad | 4814 | skip_whitespace (str); |
252b5132 RH |
4815 | |
4816 | if (co_proc_number (&str) == FAIL) | |
4817 | { | |
4818 | if (!inst.error) | |
90ca882f | 4819 | inst.error = BAD_ARGS; |
252b5132 RH |
4820 | return; |
4821 | } | |
4822 | ||
4823 | if (skip_past_comma (&str) == FAIL | |
4824 | || cp_opc_expr (&str, 20,4) == FAIL) | |
4825 | { | |
4826 | if (!inst.error) | |
90ca882f | 4827 | inst.error = BAD_ARGS; |
252b5132 RH |
4828 | return; |
4829 | } | |
4830 | ||
4831 | if (skip_past_comma (&str) == FAIL | |
4832 | || cp_reg_required_here (&str, 12) == FAIL) | |
4833 | { | |
4834 | if (!inst.error) | |
90ca882f | 4835 | inst.error = BAD_ARGS; |
252b5132 RH |
4836 | return; |
4837 | } | |
4838 | ||
4839 | if (skip_past_comma (&str) == FAIL | |
4840 | || cp_reg_required_here (&str, 16) == FAIL) | |
4841 | { | |
4842 | if (!inst.error) | |
90ca882f | 4843 | inst.error = BAD_ARGS; |
252b5132 RH |
4844 | return; |
4845 | } | |
4846 | ||
4847 | if (skip_past_comma (&str) == FAIL | |
4848 | || cp_reg_required_here (&str, 0) == FAIL) | |
4849 | { | |
4850 | if (!inst.error) | |
90ca882f | 4851 | inst.error = BAD_ARGS; |
252b5132 RH |
4852 | return; |
4853 | } | |
4854 | ||
4855 | if (skip_past_comma (&str) == SUCCESS) | |
4856 | { | |
4857 | if (cp_opc_expr (&str, 5, 3) == FAIL) | |
4858 | { | |
4859 | if (!inst.error) | |
90ca882f | 4860 | inst.error = BAD_ARGS; |
252b5132 RH |
4861 | return; |
4862 | } | |
4863 | } | |
4864 | ||
4865 | end_of_line (str); | |
4866 | return; | |
4867 | } | |
4868 | ||
4869 | static void | |
4870 | do_lstc (str, flags) | |
d78c7dca | 4871 | char * str; |
252b5132 RH |
4872 | unsigned long flags; |
4873 | { | |
4874 | /* Co-processor register load/store. | |
4875 | Format: <LDC|STC{cond}[L] CP#,CRd,<address> */ | |
4876 | ||
ae5ad4ad | 4877 | skip_whitespace (str); |
252b5132 RH |
4878 | |
4879 | if (co_proc_number (&str) == FAIL) | |
4880 | { | |
4881 | if (!inst.error) | |
90ca882f | 4882 | inst.error = BAD_ARGS; |
252b5132 RH |
4883 | return; |
4884 | } | |
4885 | ||
4886 | if (skip_past_comma (&str) == FAIL | |
4887 | || cp_reg_required_here (&str, 12) == FAIL) | |
4888 | { | |
4889 | if (!inst.error) | |
90ca882f | 4890 | inst.error = BAD_ARGS; |
252b5132 RH |
4891 | return; |
4892 | } | |
4893 | ||
4894 | if (skip_past_comma (&str) == FAIL | |
4895 | || cp_address_required_here (&str) == FAIL) | |
4896 | { | |
4897 | if (! inst.error) | |
90ca882f | 4898 | inst.error = BAD_ARGS; |
252b5132 RH |
4899 | return; |
4900 | } | |
4901 | ||
4902 | inst.instruction |= flags; | |
4903 | end_of_line (str); | |
4904 | return; | |
4905 | } | |
4906 | ||
4907 | static void | |
4908 | do_co_reg (str, flags) | |
d78c7dca | 4909 | char * str; |
252b5132 RH |
4910 | unsigned long flags; |
4911 | { | |
4912 | /* Co-processor register transfer. | |
4913 | Format: <MCR|MRC>{cond} CP#,<expr1>,Rd,CRn,CRm{,<expr2>} */ | |
4914 | ||
ae5ad4ad | 4915 | skip_whitespace (str); |
252b5132 RH |
4916 | |
4917 | if (co_proc_number (&str) == FAIL) | |
4918 | { | |
4919 | if (!inst.error) | |
90ca882f | 4920 | inst.error = BAD_ARGS; |
252b5132 RH |
4921 | return; |
4922 | } | |
4923 | ||
4924 | if (skip_past_comma (&str) == FAIL | |
4925 | || cp_opc_expr (&str, 21, 3) == FAIL) | |
4926 | { | |
4927 | if (!inst.error) | |
90ca882f | 4928 | inst.error = BAD_ARGS; |
252b5132 RH |
4929 | return; |
4930 | } | |
4931 | ||
4932 | if (skip_past_comma (&str) == FAIL | |
4933 | || reg_required_here (&str, 12) == FAIL) | |
4934 | { | |
4935 | if (!inst.error) | |
90ca882f | 4936 | inst.error = BAD_ARGS; |
252b5132 RH |
4937 | return; |
4938 | } | |
4939 | ||
4940 | if (skip_past_comma (&str) == FAIL | |
4941 | || cp_reg_required_here (&str, 16) == FAIL) | |
4942 | { | |
4943 | if (!inst.error) | |
90ca882f | 4944 | inst.error = BAD_ARGS; |
252b5132 RH |
4945 | return; |
4946 | } | |
4947 | ||
4948 | if (skip_past_comma (&str) == FAIL | |
4949 | || cp_reg_required_here (&str, 0) == FAIL) | |
4950 | { | |
4951 | if (!inst.error) | |
90ca882f | 4952 | inst.error = BAD_ARGS; |
252b5132 RH |
4953 | return; |
4954 | } | |
4955 | ||
4956 | if (skip_past_comma (&str) == SUCCESS) | |
4957 | { | |
4958 | if (cp_opc_expr (&str, 5, 3) == FAIL) | |
4959 | { | |
4960 | if (!inst.error) | |
90ca882f | 4961 | inst.error = BAD_ARGS; |
252b5132 RH |
4962 | return; |
4963 | } | |
4964 | } | |
92a66162 DL |
4965 | if (flags) |
4966 | { | |
4967 | inst.error = BAD_COND; | |
4968 | } | |
252b5132 RH |
4969 | |
4970 | end_of_line (str); | |
4971 | return; | |
4972 | } | |
4973 | ||
4974 | static void | |
4975 | do_fp_ctrl (str, flags) | |
d78c7dca | 4976 | char * str; |
684b81fa | 4977 | unsigned long flags ATTRIBUTE_UNUSED; |
252b5132 RH |
4978 | { |
4979 | /* FP control registers. | |
4980 | Format: <WFS|RFS|WFC|RFC>{cond} Rn */ | |
4981 | ||
ae5ad4ad | 4982 | skip_whitespace (str); |
252b5132 RH |
4983 | |
4984 | if (reg_required_here (&str, 12) == FAIL) | |
4985 | { | |
4986 | if (!inst.error) | |
90ca882f | 4987 | inst.error = BAD_ARGS; |
252b5132 RH |
4988 | return; |
4989 | } | |
4990 | ||
4991 | end_of_line (str); | |
4992 | return; | |
4993 | } | |
4994 | ||
4995 | static void | |
4996 | do_fp_ldst (str, flags) | |
d78c7dca | 4997 | char * str; |
684b81fa | 4998 | unsigned long flags ATTRIBUTE_UNUSED; |
252b5132 | 4999 | { |
ae5ad4ad | 5000 | skip_whitespace (str); |
252b5132 RH |
5001 | |
5002 | switch (inst.suffix) | |
5003 | { | |
5004 | case SUFF_S: | |
5005 | break; | |
5006 | case SUFF_D: | |
5007 | inst.instruction |= CP_T_X; | |
5008 | break; | |
5009 | case SUFF_E: | |
5010 | inst.instruction |= CP_T_Y; | |
5011 | break; | |
5012 | case SUFF_P: | |
5013 | inst.instruction |= CP_T_X | CP_T_Y; | |
5014 | break; | |
5015 | default: | |
5016 | abort (); | |
5017 | } | |
5018 | ||
5019 | if (fp_reg_required_here (&str, 12) == FAIL) | |
5020 | { | |
5021 | if (!inst.error) | |
90ca882f | 5022 | inst.error = BAD_ARGS; |
252b5132 RH |
5023 | return; |
5024 | } | |
5025 | ||
5026 | if (skip_past_comma (&str) == FAIL | |
5027 | || cp_address_required_here (&str) == FAIL) | |
5028 | { | |
5029 | if (!inst.error) | |
90ca882f | 5030 | inst.error = BAD_ARGS; |
252b5132 RH |
5031 | return; |
5032 | } | |
5033 | ||
5034 | end_of_line (str); | |
5035 | } | |
5036 | ||
5037 | static void | |
5038 | do_fp_ldmstm (str, flags) | |
d78c7dca | 5039 | char * str; |
252b5132 RH |
5040 | unsigned long flags; |
5041 | { | |
5042 | int num_regs; | |
5043 | ||
ae5ad4ad | 5044 | skip_whitespace (str); |
252b5132 RH |
5045 | |
5046 | if (fp_reg_required_here (&str, 12) == FAIL) | |
5047 | { | |
5048 | if (! inst.error) | |
90ca882f | 5049 | inst.error = BAD_ARGS; |
252b5132 RH |
5050 | return; |
5051 | } | |
5052 | ||
28e4f854 | 5053 | /* Get Number of registers to transfer. */ |
252b5132 RH |
5054 | if (skip_past_comma (&str) == FAIL |
5055 | || my_get_expression (&inst.reloc.exp, &str)) | |
5056 | { | |
5057 | if (! inst.error) | |
5058 | inst.error = _("constant expression expected"); | |
5059 | return; | |
5060 | } | |
5061 | ||
5062 | if (inst.reloc.exp.X_op != O_constant) | |
5063 | { | |
5064 | inst.error = _("Constant value required for number of registers"); | |
5065 | return; | |
5066 | } | |
5067 | ||
5068 | num_regs = inst.reloc.exp.X_add_number; | |
5069 | ||
5070 | if (num_regs < 1 || num_regs > 4) | |
5071 | { | |
5072 | inst.error = _("number of registers must be in the range [1:4]"); | |
5073 | return; | |
5074 | } | |
5075 | ||
5076 | switch (num_regs) | |
5077 | { | |
5078 | case 1: | |
5079 | inst.instruction |= CP_T_X; | |
5080 | break; | |
5081 | case 2: | |
5082 | inst.instruction |= CP_T_Y; | |
5083 | break; | |
5084 | case 3: | |
5085 | inst.instruction |= CP_T_Y | CP_T_X; | |
5086 | break; | |
5087 | case 4: | |
5088 | break; | |
5089 | default: | |
5090 | abort (); | |
5091 | } | |
5092 | ||
5093 | if (flags) | |
5094 | { | |
5095 | int reg; | |
5096 | int write_back; | |
5097 | int offset; | |
5098 | ||
5099 | /* The instruction specified "ea" or "fd", so we can only accept | |
5100 | [Rn]{!}. The instruction does not really support stacking or | |
5101 | unstacking, so we have to emulate these by setting appropriate | |
5102 | bits and offsets. */ | |
5103 | if (skip_past_comma (&str) == FAIL | |
5104 | || *str != '[') | |
5105 | { | |
5106 | if (! inst.error) | |
90ca882f | 5107 | inst.error = BAD_ARGS; |
252b5132 RH |
5108 | return; |
5109 | } | |
5110 | ||
5111 | str++; | |
ae5ad4ad | 5112 | skip_whitespace (str); |
252b5132 RH |
5113 | |
5114 | if ((reg = reg_required_here (&str, 16)) == FAIL) | |
5115 | return; | |
5116 | ||
ae5ad4ad | 5117 | skip_whitespace (str); |
252b5132 RH |
5118 | |
5119 | if (*str != ']') | |
5120 | { | |
90ca882f | 5121 | inst.error = BAD_ARGS; |
252b5132 RH |
5122 | return; |
5123 | } | |
5124 | ||
5125 | str++; | |
5126 | if (*str == '!') | |
5127 | { | |
5128 | write_back = 1; | |
5129 | str++; | |
5130 | if (reg == REG_PC) | |
5131 | { | |
28e4f854 KH |
5132 | inst.error = |
5133 | _("R15 not allowed as base register with write-back"); | |
252b5132 RH |
5134 | return; |
5135 | } | |
5136 | } | |
5137 | else | |
5138 | write_back = 0; | |
5139 | ||
5140 | if (flags & CP_T_Pre) | |
5141 | { | |
28e4f854 | 5142 | /* Pre-decrement. */ |
252b5132 RH |
5143 | offset = 3 * num_regs; |
5144 | if (write_back) | |
5145 | flags |= CP_T_WB; | |
5146 | } | |
5147 | else | |
5148 | { | |
28e4f854 | 5149 | /* Post-increment. */ |
252b5132 RH |
5150 | if (write_back) |
5151 | { | |
5152 | flags |= CP_T_WB; | |
5153 | offset = 3 * num_regs; | |
5154 | } | |
5155 | else | |
5156 | { | |
5157 | /* No write-back, so convert this into a standard pre-increment | |
5158 | instruction -- aesthetically more pleasing. */ | |
5159 | flags = CP_T_Pre | CP_T_UD; | |
5160 | offset = 0; | |
5161 | } | |
5162 | } | |
5163 | ||
5164 | inst.instruction |= flags | offset; | |
5165 | } | |
5166 | else if (skip_past_comma (&str) == FAIL | |
5167 | || cp_address_required_here (&str) == FAIL) | |
5168 | { | |
5169 | if (! inst.error) | |
90ca882f | 5170 | inst.error = BAD_ARGS; |
252b5132 RH |
5171 | return; |
5172 | } | |
5173 | ||
5174 | end_of_line (str); | |
5175 | } | |
5176 | ||
5177 | static void | |
5178 | do_fp_dyadic (str, flags) | |
d78c7dca | 5179 | char * str; |
252b5132 RH |
5180 | unsigned long flags; |
5181 | { | |
ae5ad4ad | 5182 | skip_whitespace (str); |
252b5132 RH |
5183 | |
5184 | switch (inst.suffix) | |
5185 | { | |
5186 | case SUFF_S: | |
5187 | break; | |
5188 | case SUFF_D: | |
5189 | inst.instruction |= 0x00000080; | |
5190 | break; | |
5191 | case SUFF_E: | |
5192 | inst.instruction |= 0x00080000; | |
5193 | break; | |
5194 | default: | |
5195 | abort (); | |
5196 | } | |
5197 | ||
5198 | if (fp_reg_required_here (&str, 12) == FAIL) | |
5199 | { | |
5200 | if (! inst.error) | |
90ca882f | 5201 | inst.error = BAD_ARGS; |
252b5132 RH |
5202 | return; |
5203 | } | |
5204 | ||
5205 | if (skip_past_comma (&str) == FAIL | |
5206 | || fp_reg_required_here (&str, 16) == FAIL) | |
5207 | { | |
5208 | if (! inst.error) | |
90ca882f | 5209 | inst.error = BAD_ARGS; |
252b5132 RH |
5210 | return; |
5211 | } | |
5212 | ||
5213 | if (skip_past_comma (&str) == FAIL | |
5214 | || fp_op2 (&str) == FAIL) | |
5215 | { | |
5216 | if (! inst.error) | |
90ca882f | 5217 | inst.error = BAD_ARGS; |
252b5132 RH |
5218 | return; |
5219 | } | |
5220 | ||
5221 | inst.instruction |= flags; | |
5222 | end_of_line (str); | |
5223 | return; | |
5224 | } | |
5225 | ||
5226 | static void | |
5227 | do_fp_monadic (str, flags) | |
d78c7dca | 5228 | char * str; |
252b5132 RH |
5229 | unsigned long flags; |
5230 | { | |
ae5ad4ad | 5231 | skip_whitespace (str); |
252b5132 RH |
5232 | |
5233 | switch (inst.suffix) | |
5234 | { | |
5235 | case SUFF_S: | |
5236 | break; | |
5237 | case SUFF_D: | |
5238 | inst.instruction |= 0x00000080; | |
5239 | break; | |
5240 | case SUFF_E: | |
5241 | inst.instruction |= 0x00080000; | |
5242 | break; | |
5243 | default: | |
5244 | abort (); | |
5245 | } | |
5246 | ||
5247 | if (fp_reg_required_here (&str, 12) == FAIL) | |
5248 | { | |
5249 | if (! inst.error) | |
90ca882f | 5250 | inst.error = BAD_ARGS; |
252b5132 RH |
5251 | return; |
5252 | } | |
5253 | ||
5254 | if (skip_past_comma (&str) == FAIL | |
5255 | || fp_op2 (&str) == FAIL) | |
5256 | { | |
5257 | if (! inst.error) | |
90ca882f | 5258 | inst.error = BAD_ARGS; |
252b5132 RH |
5259 | return; |
5260 | } | |
5261 | ||
5262 | inst.instruction |= flags; | |
5263 | end_of_line (str); | |
5264 | return; | |
5265 | } | |
5266 | ||
5267 | static void | |
5268 | do_fp_cmp (str, flags) | |
d78c7dca | 5269 | char * str; |
252b5132 RH |
5270 | unsigned long flags; |
5271 | { | |
ae5ad4ad | 5272 | skip_whitespace (str); |
252b5132 RH |
5273 | |
5274 | if (fp_reg_required_here (&str, 16) == FAIL) | |
5275 | { | |
5276 | if (! inst.error) | |
90ca882f | 5277 | inst.error = BAD_ARGS; |
252b5132 RH |
5278 | return; |
5279 | } | |
5280 | ||
5281 | if (skip_past_comma (&str) == FAIL | |
5282 | || fp_op2 (&str) == FAIL) | |
5283 | { | |
5284 | if (! inst.error) | |
90ca882f | 5285 | inst.error = BAD_ARGS; |
252b5132 RH |
5286 | return; |
5287 | } | |
5288 | ||
5289 | inst.instruction |= flags; | |
5290 | end_of_line (str); | |
5291 | return; | |
5292 | } | |
5293 | ||
5294 | static void | |
5295 | do_fp_from_reg (str, flags) | |
d78c7dca | 5296 | char * str; |
252b5132 RH |
5297 | unsigned long flags; |
5298 | { | |
ae5ad4ad | 5299 | skip_whitespace (str); |
252b5132 RH |
5300 | |
5301 | switch (inst.suffix) | |
5302 | { | |
5303 | case SUFF_S: | |
5304 | break; | |
5305 | case SUFF_D: | |
5306 | inst.instruction |= 0x00000080; | |
5307 | break; | |
5308 | case SUFF_E: | |
5309 | inst.instruction |= 0x00080000; | |
5310 | break; | |
5311 | default: | |
5312 | abort (); | |
5313 | } | |
5314 | ||
5315 | if (fp_reg_required_here (&str, 16) == FAIL) | |
5316 | { | |
5317 | if (! inst.error) | |
90ca882f | 5318 | inst.error = BAD_ARGS; |
252b5132 RH |
5319 | return; |
5320 | } | |
5321 | ||
5322 | if (skip_past_comma (&str) == FAIL | |
5323 | || reg_required_here (&str, 12) == FAIL) | |
5324 | { | |
5325 | if (! inst.error) | |
90ca882f | 5326 | inst.error = BAD_ARGS; |
252b5132 RH |
5327 | return; |
5328 | } | |
5329 | ||
5330 | inst.instruction |= flags; | |
5331 | end_of_line (str); | |
5332 | return; | |
5333 | } | |
5334 | ||
5335 | static void | |
5336 | do_fp_to_reg (str, flags) | |
d78c7dca | 5337 | char * str; |
252b5132 RH |
5338 | unsigned long flags; |
5339 | { | |
ae5ad4ad | 5340 | skip_whitespace (str); |
252b5132 RH |
5341 | |
5342 | if (reg_required_here (&str, 12) == FAIL) | |
5343 | return; | |
5344 | ||
5345 | if (skip_past_comma (&str) == FAIL | |
5346 | || fp_reg_required_here (&str, 0) == FAIL) | |
5347 | { | |
5348 | if (! inst.error) | |
90ca882f | 5349 | inst.error = BAD_ARGS; |
252b5132 RH |
5350 | return; |
5351 | } | |
5352 | ||
5353 | inst.instruction |= flags; | |
5354 | end_of_line (str); | |
5355 | return; | |
5356 | } | |
5357 | ||
28e4f854 | 5358 | /* Thumb specific routines. */ |
252b5132 RH |
5359 | |
5360 | /* Parse and validate that a register is of the right form, this saves | |
28e4f854 KH |
5361 | repeated checking of this information in many similar cases. |
5362 | Unlike the 32-bit case we do not insert the register into the opcode | |
5363 | here, since the position is often unknown until the full instruction | |
252b5132 | 5364 | has been parsed. */ |
28e4f854 | 5365 | |
252b5132 RH |
5366 | static int |
5367 | thumb_reg (strp, hi_lo) | |
5368 | char ** strp; | |
5369 | int hi_lo; | |
5370 | { | |
5371 | int reg; | |
5372 | ||
5373 | if ((reg = reg_required_here (strp, -1)) == FAIL) | |
5374 | return FAIL; | |
5375 | ||
5376 | switch (hi_lo) | |
5377 | { | |
5378 | case THUMB_REG_LO: | |
5379 | if (reg > 7) | |
5380 | { | |
5381 | inst.error = _("lo register required"); | |
5382 | return FAIL; | |
5383 | } | |
5384 | break; | |
5385 | ||
5386 | case THUMB_REG_HI: | |
5387 | if (reg < 8) | |
5388 | { | |
5389 | inst.error = _("hi register required"); | |
5390 | return FAIL; | |
5391 | } | |
5392 | break; | |
5393 | ||
5394 | default: | |
5395 | break; | |
5396 | } | |
5397 | ||
5398 | return reg; | |
5399 | } | |
5400 | ||
5401 | /* Parse an add or subtract instruction, SUBTRACT is non-zero if the opcode | |
5402 | was SUB. */ | |
28e4f854 | 5403 | |
252b5132 RH |
5404 | static void |
5405 | thumb_add_sub (str, subtract) | |
d78c7dca NC |
5406 | char * str; |
5407 | int subtract; | |
252b5132 RH |
5408 | { |
5409 | int Rd, Rs, Rn = FAIL; | |
5410 | ||
ae5ad4ad | 5411 | skip_whitespace (str); |
252b5132 RH |
5412 | |
5413 | if ((Rd = thumb_reg (&str, THUMB_REG_ANY)) == FAIL | |
5414 | || skip_past_comma (&str) == FAIL) | |
5415 | { | |
5416 | if (! inst.error) | |
90ca882f | 5417 | inst.error = BAD_ARGS; |
252b5132 RH |
5418 | return; |
5419 | } | |
5420 | ||
5421 | if (is_immediate_prefix (*str)) | |
5422 | { | |
5423 | Rs = Rd; | |
5424 | str++; | |
5425 | if (my_get_expression (&inst.reloc.exp, &str)) | |
5426 | return; | |
5427 | } | |
5428 | else | |
5429 | { | |
5430 | if ((Rs = thumb_reg (&str, THUMB_REG_ANY)) == FAIL) | |
5431 | return; | |
5432 | ||
5433 | if (skip_past_comma (&str) == FAIL) | |
5434 | { | |
28e4f854 KH |
5435 | /* Two operand format, shuffle the registers |
5436 | and pretend there are 3. */ | |
252b5132 RH |
5437 | Rn = Rs; |
5438 | Rs = Rd; | |
5439 | } | |
5440 | else if (is_immediate_prefix (*str)) | |
5441 | { | |
5442 | str++; | |
5443 | if (my_get_expression (&inst.reloc.exp, &str)) | |
5444 | return; | |
5445 | } | |
5446 | else if ((Rn = thumb_reg (&str, THUMB_REG_ANY)) == FAIL) | |
5447 | return; | |
5448 | } | |
5449 | ||
5450 | /* We now have Rd and Rs set to registers, and Rn set to a register or FAIL; | |
28e4f854 | 5451 | for the latter case, EXPR contains the immediate that was found. */ |
252b5132 RH |
5452 | if (Rn != FAIL) |
5453 | { | |
5454 | /* All register format. */ | |
5455 | if (Rd > 7 || Rs > 7 || Rn > 7) | |
5456 | { | |
5457 | if (Rs != Rd) | |
5458 | { | |
5459 | inst.error = _("dest and source1 must be the same register"); | |
5460 | return; | |
5461 | } | |
5462 | ||
28e4f854 | 5463 | /* Can't do this for SUB. */ |
252b5132 RH |
5464 | if (subtract) |
5465 | { | |
5466 | inst.error = _("subtract valid only on lo regs"); | |
5467 | return; | |
5468 | } | |
5469 | ||
5470 | inst.instruction = (T_OPCODE_ADD_HI | |
5471 | | (Rd > 7 ? THUMB_H1 : 0) | |
5472 | | (Rn > 7 ? THUMB_H2 : 0)); | |
5473 | inst.instruction |= (Rd & 7) | ((Rn & 7) << 3); | |
5474 | } | |
5475 | else | |
5476 | { | |
5477 | inst.instruction = subtract ? T_OPCODE_SUB_R3 : T_OPCODE_ADD_R3; | |
5478 | inst.instruction |= Rd | (Rs << 3) | (Rn << 6); | |
5479 | } | |
5480 | } | |
5481 | else | |
5482 | { | |
5483 | /* Immediate expression, now things start to get nasty. */ | |
5484 | ||
5485 | /* First deal with HI regs, only very restricted cases allowed: | |
5486 | Adjusting SP, and using PC or SP to get an address. */ | |
5487 | if ((Rd > 7 && (Rd != REG_SP || Rs != REG_SP)) | |
5488 | || (Rs > 7 && Rs != REG_SP && Rs != REG_PC)) | |
5489 | { | |
5490 | inst.error = _("invalid Hi register with immediate"); | |
5491 | return; | |
5492 | } | |
5493 | ||
5494 | if (inst.reloc.exp.X_op != O_constant) | |
5495 | { | |
5496 | /* Value isn't known yet, all we can do is store all the fragments | |
28e4f854 | 5497 | we know about in the instruction and let the reloc hacking |
252b5132 RH |
5498 | work it all out. */ |
5499 | inst.instruction = (subtract ? 0x8000 : 0) | (Rd << 4) | Rs; | |
5500 | inst.reloc.type = BFD_RELOC_ARM_THUMB_ADD; | |
5501 | } | |
5502 | else | |
5503 | { | |
5504 | int offset = inst.reloc.exp.X_add_number; | |
5505 | ||
5506 | if (subtract) | |
5507 | offset = -offset; | |
5508 | ||
5509 | if (offset < 0) | |
5510 | { | |
5511 | offset = -offset; | |
5512 | subtract = 1; | |
5513 | ||
28e4f854 | 5514 | /* Quick check, in case offset is MIN_INT. */ |
252b5132 RH |
5515 | if (offset < 0) |
5516 | { | |
5517 | inst.error = _("immediate value out of range"); | |
5518 | return; | |
5519 | } | |
5520 | } | |
5521 | else | |
5522 | subtract = 0; | |
5523 | ||
5524 | if (Rd == REG_SP) | |
5525 | { | |
5526 | if (offset & ~0x1fc) | |
5527 | { | |
5528 | inst.error = _("invalid immediate value for stack adjust"); | |
5529 | return; | |
5530 | } | |
5531 | inst.instruction = subtract ? T_OPCODE_SUB_ST : T_OPCODE_ADD_ST; | |
5532 | inst.instruction |= offset >> 2; | |
5533 | } | |
5534 | else if (Rs == REG_PC || Rs == REG_SP) | |
5535 | { | |
5536 | if (subtract | |
5537 | || (offset & ~0x3fc)) | |
5538 | { | |
5539 | inst.error = _("invalid immediate for address calculation"); | |
5540 | return; | |
5541 | } | |
5542 | inst.instruction = (Rs == REG_PC ? T_OPCODE_ADD_PC | |
5543 | : T_OPCODE_ADD_SP); | |
5544 | inst.instruction |= (Rd << 8) | (offset >> 2); | |
5545 | } | |
5546 | else if (Rs == Rd) | |
5547 | { | |
5548 | if (offset & ~0xff) | |
5549 | { | |
5550 | inst.error = _("immediate value out of range"); | |
5551 | return; | |
5552 | } | |
5553 | inst.instruction = subtract ? T_OPCODE_SUB_I8 : T_OPCODE_ADD_I8; | |
5554 | inst.instruction |= (Rd << 8) | offset; | |
5555 | } | |
5556 | else | |
5557 | { | |
5558 | if (offset & ~0x7) | |
5559 | { | |
5560 | inst.error = _("immediate value out of range"); | |
5561 | return; | |
5562 | } | |
5563 | inst.instruction = subtract ? T_OPCODE_SUB_I3 : T_OPCODE_ADD_I3; | |
5564 | inst.instruction |= Rd | (Rs << 3) | (offset << 6); | |
5565 | } | |
5566 | } | |
5567 | } | |
28e4f854 | 5568 | |
252b5132 RH |
5569 | end_of_line (str); |
5570 | } | |
5571 | ||
5572 | static void | |
5573 | thumb_shift (str, shift) | |
d78c7dca NC |
5574 | char * str; |
5575 | int shift; | |
252b5132 RH |
5576 | { |
5577 | int Rd, Rs, Rn = FAIL; | |
5578 | ||
ae5ad4ad | 5579 | skip_whitespace (str); |
252b5132 RH |
5580 | |
5581 | if ((Rd = thumb_reg (&str, THUMB_REG_LO)) == FAIL | |
5582 | || skip_past_comma (&str) == FAIL) | |
5583 | { | |
5584 | if (! inst.error) | |
90ca882f | 5585 | inst.error = BAD_ARGS; |
252b5132 RH |
5586 | return; |
5587 | } | |
5588 | ||
5589 | if (is_immediate_prefix (*str)) | |
5590 | { | |
5591 | /* Two operand immediate format, set Rs to Rd. */ | |
5592 | Rs = Rd; | |
d78c7dca | 5593 | str ++; |
252b5132 RH |
5594 | if (my_get_expression (&inst.reloc.exp, &str)) |
5595 | return; | |
5596 | } | |
5597 | else | |
5598 | { | |
28e4f854 | 5599 | if ((Rs = thumb_reg (&str, THUMB_REG_LO)) == FAIL) |
252b5132 RH |
5600 | return; |
5601 | ||
5602 | if (skip_past_comma (&str) == FAIL) | |
5603 | { | |
28e4f854 KH |
5604 | /* Two operand format, shuffle the registers |
5605 | and pretend there are 3. */ | |
252b5132 RH |
5606 | Rn = Rs; |
5607 | Rs = Rd; | |
5608 | } | |
5609 | else if (is_immediate_prefix (*str)) | |
5610 | { | |
5611 | str++; | |
5612 | if (my_get_expression (&inst.reloc.exp, &str)) | |
5613 | return; | |
5614 | } | |
5615 | else if ((Rn = thumb_reg (&str, THUMB_REG_LO)) == FAIL) | |
5616 | return; | |
5617 | } | |
5618 | ||
5619 | /* We now have Rd and Rs set to registers, and Rn set to a register or FAIL; | |
28e4f854 | 5620 | for the latter case, EXPR contains the immediate that was found. */ |
252b5132 RH |
5621 | |
5622 | if (Rn != FAIL) | |
5623 | { | |
5624 | if (Rs != Rd) | |
5625 | { | |
5626 | inst.error = _("source1 and dest must be same register"); | |
5627 | return; | |
5628 | } | |
5629 | ||
5630 | switch (shift) | |
5631 | { | |
5632 | case THUMB_ASR: inst.instruction = T_OPCODE_ASR_R; break; | |
5633 | case THUMB_LSL: inst.instruction = T_OPCODE_LSL_R; break; | |
5634 | case THUMB_LSR: inst.instruction = T_OPCODE_LSR_R; break; | |
5635 | } | |
5636 | ||
5637 | inst.instruction |= Rd | (Rn << 3); | |
5638 | } | |
5639 | else | |
5640 | { | |
5641 | switch (shift) | |
5642 | { | |
5643 | case THUMB_ASR: inst.instruction = T_OPCODE_ASR_I; break; | |
5644 | case THUMB_LSL: inst.instruction = T_OPCODE_LSL_I; break; | |
5645 | case THUMB_LSR: inst.instruction = T_OPCODE_LSR_I; break; | |
5646 | } | |
5647 | ||
5648 | if (inst.reloc.exp.X_op != O_constant) | |
5649 | { | |
5650 | /* Value isn't known yet, create a dummy reloc and let reloc | |
28e4f854 | 5651 | hacking fix it up. */ |
252b5132 RH |
5652 | inst.reloc.type = BFD_RELOC_ARM_THUMB_SHIFT; |
5653 | } | |
5654 | else | |
5655 | { | |
5656 | unsigned shift_value = inst.reloc.exp.X_add_number; | |
5657 | ||
5658 | if (shift_value > 32 || (shift_value == 32 && shift == THUMB_LSL)) | |
5659 | { | |
5660 | inst.error = _("Invalid immediate for shift"); | |
5661 | return; | |
5662 | } | |
5663 | ||
28e4f854 | 5664 | /* Shifts of zero are handled by converting to LSL. */ |
252b5132 RH |
5665 | if (shift_value == 0) |
5666 | inst.instruction = T_OPCODE_LSL_I; | |
5667 | ||
28e4f854 | 5668 | /* Shifts of 32 are encoded as a shift of zero. */ |
252b5132 RH |
5669 | if (shift_value == 32) |
5670 | shift_value = 0; | |
5671 | ||
5672 | inst.instruction |= shift_value << 6; | |
5673 | } | |
5674 | ||
5675 | inst.instruction |= Rd | (Rs << 3); | |
5676 | } | |
28e4f854 | 5677 | |
252b5132 RH |
5678 | end_of_line (str); |
5679 | } | |
5680 | ||
5681 | static void | |
5682 | thumb_mov_compare (str, move) | |
d78c7dca NC |
5683 | char * str; |
5684 | int move; | |
252b5132 RH |
5685 | { |
5686 | int Rd, Rs = FAIL; | |
5687 | ||
ae5ad4ad | 5688 | skip_whitespace (str); |
252b5132 RH |
5689 | |
5690 | if ((Rd = thumb_reg (&str, THUMB_REG_ANY)) == FAIL | |
5691 | || skip_past_comma (&str) == FAIL) | |
5692 | { | |
5693 | if (! inst.error) | |
90ca882f | 5694 | inst.error = BAD_ARGS; |
252b5132 RH |
5695 | return; |
5696 | } | |
5697 | ||
5698 | if (is_immediate_prefix (*str)) | |
5699 | { | |
5700 | str++; | |
5701 | if (my_get_expression (&inst.reloc.exp, &str)) | |
5702 | return; | |
5703 | } | |
5704 | else if ((Rs = thumb_reg (&str, THUMB_REG_ANY)) == FAIL) | |
5705 | return; | |
5706 | ||
5707 | if (Rs != FAIL) | |
5708 | { | |
5709 | if (Rs < 8 && Rd < 8) | |
5710 | { | |
5711 | if (move == THUMB_MOVE) | |
5712 | /* A move of two lowregs is encoded as ADD Rd, Rs, #0 | |
28e4f854 | 5713 | since a MOV instruction produces unpredictable results. */ |
252b5132 RH |
5714 | inst.instruction = T_OPCODE_ADD_I3; |
5715 | else | |
5716 | inst.instruction = T_OPCODE_CMP_LR; | |
5717 | inst.instruction |= Rd | (Rs << 3); | |
5718 | } | |
5719 | else | |
5720 | { | |
5721 | if (move == THUMB_MOVE) | |
5722 | inst.instruction = T_OPCODE_MOV_HR; | |
5723 | else | |
5724 | inst.instruction = T_OPCODE_CMP_HR; | |
5725 | ||
5726 | if (Rd > 7) | |
5727 | inst.instruction |= THUMB_H1; | |
5728 | ||
5729 | if (Rs > 7) | |
5730 | inst.instruction |= THUMB_H2; | |
5731 | ||
5732 | inst.instruction |= (Rd & 7) | ((Rs & 7) << 3); | |
5733 | } | |
5734 | } | |
5735 | else | |
5736 | { | |
5737 | if (Rd > 7) | |
5738 | { | |
5739 | inst.error = _("only lo regs allowed with immediate"); | |
5740 | return; | |
5741 | } | |
5742 | ||
5743 | if (move == THUMB_MOVE) | |
5744 | inst.instruction = T_OPCODE_MOV_I8; | |
5745 | else | |
5746 | inst.instruction = T_OPCODE_CMP_I8; | |
5747 | ||
5748 | inst.instruction |= Rd << 8; | |
5749 | ||
5750 | if (inst.reloc.exp.X_op != O_constant) | |
5751 | inst.reloc.type = BFD_RELOC_ARM_THUMB_IMM; | |
5752 | else | |
5753 | { | |
5754 | unsigned value = inst.reloc.exp.X_add_number; | |
5755 | ||
5756 | if (value > 255) | |
5757 | { | |
5758 | inst.error = _("invalid immediate"); | |
5759 | return; | |
5760 | } | |
5761 | ||
5762 | inst.instruction |= value; | |
5763 | } | |
5764 | } | |
5765 | ||
5766 | end_of_line (str); | |
5767 | } | |
5768 | ||
5769 | static void | |
5770 | thumb_load_store (str, load_store, size) | |
d78c7dca NC |
5771 | char * str; |
5772 | int load_store; | |
5773 | int size; | |
252b5132 RH |
5774 | { |
5775 | int Rd, Rb, Ro = FAIL; | |
5776 | ||
ae5ad4ad | 5777 | skip_whitespace (str); |
252b5132 RH |
5778 | |
5779 | if ((Rd = thumb_reg (&str, THUMB_REG_LO)) == FAIL | |
5780 | || skip_past_comma (&str) == FAIL) | |
5781 | { | |
5782 | if (! inst.error) | |
90ca882f | 5783 | inst.error = BAD_ARGS; |
252b5132 RH |
5784 | return; |
5785 | } | |
5786 | ||
5787 | if (*str == '[') | |
5788 | { | |
5789 | str++; | |
5790 | if ((Rb = thumb_reg (&str, THUMB_REG_ANY)) == FAIL) | |
5791 | return; | |
5792 | ||
5793 | if (skip_past_comma (&str) != FAIL) | |
5794 | { | |
5795 | if (is_immediate_prefix (*str)) | |
5796 | { | |
5797 | str++; | |
5798 | if (my_get_expression (&inst.reloc.exp, &str)) | |
5799 | return; | |
5800 | } | |
5801 | else if ((Ro = thumb_reg (&str, THUMB_REG_LO)) == FAIL) | |
5802 | return; | |
5803 | } | |
5804 | else | |
5805 | { | |
5806 | inst.reloc.exp.X_op = O_constant; | |
5807 | inst.reloc.exp.X_add_number = 0; | |
5808 | } | |
5809 | ||
5810 | if (*str != ']') | |
5811 | { | |
5812 | inst.error = _("expected ']'"); | |
5813 | return; | |
5814 | } | |
5815 | str++; | |
5816 | } | |
5817 | else if (*str == '=') | |
5818 | { | |
28e4f854 | 5819 | /* Parse an "ldr Rd, =expr" instruction; this is another pseudo op. */ |
252b5132 RH |
5820 | str++; |
5821 | ||
ae5ad4ad | 5822 | skip_whitespace (str); |
252b5132 | 5823 | |
d78c7dca | 5824 | if (my_get_expression (& inst.reloc.exp, & str)) |
252b5132 RH |
5825 | return; |
5826 | ||
5827 | end_of_line (str); | |
28e4f854 | 5828 | |
d78c7dca | 5829 | if ( inst.reloc.exp.X_op != O_constant |
252b5132 RH |
5830 | && inst.reloc.exp.X_op != O_symbol) |
5831 | { | |
5832 | inst.error = "Constant expression expected"; | |
5833 | return; | |
5834 | } | |
5835 | ||
5836 | if (inst.reloc.exp.X_op == O_constant | |
5837 | && ((inst.reloc.exp.X_add_number & ~0xFF) == 0)) | |
5838 | { | |
28e4f854 | 5839 | /* This can be done with a mov instruction. */ |
252b5132 RH |
5840 | |
5841 | inst.instruction = T_OPCODE_MOV_I8 | (Rd << 8); | |
5842 | inst.instruction |= inst.reloc.exp.X_add_number; | |
28e4f854 | 5843 | return; |
252b5132 RH |
5844 | } |
5845 | ||
28e4f854 | 5846 | /* Insert into literal pool. */ |
252b5132 RH |
5847 | if (add_to_lit_pool () == FAIL) |
5848 | { | |
5849 | if (!inst.error) | |
28e4f854 | 5850 | inst.error = "literal pool insertion failed"; |
252b5132 RH |
5851 | return; |
5852 | } | |
5853 | ||
5854 | inst.reloc.type = BFD_RELOC_ARM_THUMB_OFFSET; | |
5855 | inst.reloc.pc_rel = 1; | |
5856 | inst.instruction = T_OPCODE_LDR_PC | (Rd << 8); | |
28e4f854 KH |
5857 | /* Adjust ARM pipeline offset to Thumb. */ |
5858 | inst.reloc.exp.X_add_number += 4; | |
252b5132 RH |
5859 | |
5860 | return; | |
5861 | } | |
5862 | else | |
5863 | { | |
5864 | if (my_get_expression (&inst.reloc.exp, &str)) | |
5865 | return; | |
5866 | ||
5867 | inst.instruction = T_OPCODE_LDR_PC | (Rd << 8); | |
5868 | inst.reloc.pc_rel = 1; | |
28e4f854 | 5869 | inst.reloc.exp.X_add_number -= 4; /* Pipeline offset. */ |
252b5132 RH |
5870 | inst.reloc.type = BFD_RELOC_ARM_THUMB_OFFSET; |
5871 | end_of_line (str); | |
5872 | return; | |
5873 | } | |
5874 | ||
5875 | if (Rb == REG_PC || Rb == REG_SP) | |
5876 | { | |
5877 | if (size != THUMB_WORD) | |
5878 | { | |
5879 | inst.error = _("byte or halfword not valid for base register"); | |
5880 | return; | |
5881 | } | |
5882 | else if (Rb == REG_PC && load_store != THUMB_LOAD) | |
5883 | { | |
5884 | inst.error = _("R15 based store not allowed"); | |
5885 | return; | |
5886 | } | |
5887 | else if (Ro != FAIL) | |
5888 | { | |
5889 | inst.error = _("Invalid base register for register offset"); | |
5890 | return; | |
5891 | } | |
5892 | ||
5893 | if (Rb == REG_PC) | |
5894 | inst.instruction = T_OPCODE_LDR_PC; | |
5895 | else if (load_store == THUMB_LOAD) | |
5896 | inst.instruction = T_OPCODE_LDR_SP; | |
5897 | else | |
5898 | inst.instruction = T_OPCODE_STR_SP; | |
5899 | ||
5900 | inst.instruction |= Rd << 8; | |
5901 | if (inst.reloc.exp.X_op == O_constant) | |
5902 | { | |
5903 | unsigned offset = inst.reloc.exp.X_add_number; | |
5904 | ||
5905 | if (offset & ~0x3fc) | |
5906 | { | |
5907 | inst.error = _("invalid offset"); | |
5908 | return; | |
5909 | } | |
5910 | ||
5911 | inst.instruction |= offset >> 2; | |
5912 | } | |
5913 | else | |
5914 | inst.reloc.type = BFD_RELOC_ARM_THUMB_OFFSET; | |
5915 | } | |
5916 | else if (Rb > 7) | |
5917 | { | |
5918 | inst.error = _("invalid base register in load/store"); | |
5919 | return; | |
5920 | } | |
5921 | else if (Ro == FAIL) | |
5922 | { | |
28e4f854 | 5923 | /* Immediate offset. */ |
252b5132 RH |
5924 | if (size == THUMB_WORD) |
5925 | inst.instruction = (load_store == THUMB_LOAD | |
5926 | ? T_OPCODE_LDR_IW : T_OPCODE_STR_IW); | |
5927 | else if (size == THUMB_HALFWORD) | |
5928 | inst.instruction = (load_store == THUMB_LOAD | |
5929 | ? T_OPCODE_LDR_IH : T_OPCODE_STR_IH); | |
5930 | else | |
5931 | inst.instruction = (load_store == THUMB_LOAD | |
5932 | ? T_OPCODE_LDR_IB : T_OPCODE_STR_IB); | |
5933 | ||
5934 | inst.instruction |= Rd | (Rb << 3); | |
5935 | ||
5936 | if (inst.reloc.exp.X_op == O_constant) | |
5937 | { | |
5938 | unsigned offset = inst.reloc.exp.X_add_number; | |
28e4f854 | 5939 | |
252b5132 RH |
5940 | if (offset & ~(0x1f << size)) |
5941 | { | |
5942 | inst.error = _("Invalid offset"); | |
5943 | return; | |
5944 | } | |
5945 | inst.instruction |= (offset >> size) << 6; | |
5946 | } | |
5947 | else | |
5948 | inst.reloc.type = BFD_RELOC_ARM_THUMB_OFFSET; | |
5949 | } | |
5950 | else | |
5951 | { | |
28e4f854 | 5952 | /* Register offset. */ |
252b5132 RH |
5953 | if (size == THUMB_WORD) |
5954 | inst.instruction = (load_store == THUMB_LOAD | |
5955 | ? T_OPCODE_LDR_RW : T_OPCODE_STR_RW); | |
5956 | else if (size == THUMB_HALFWORD) | |
5957 | inst.instruction = (load_store == THUMB_LOAD | |
5958 | ? T_OPCODE_LDR_RH : T_OPCODE_STR_RH); | |
5959 | else | |
5960 | inst.instruction = (load_store == THUMB_LOAD | |
5961 | ? T_OPCODE_LDR_RB : T_OPCODE_STR_RB); | |
5962 | ||
5963 | inst.instruction |= Rd | (Rb << 3) | (Ro << 6); | |
5964 | } | |
5965 | ||
5966 | end_of_line (str); | |
5967 | } | |
5968 | ||
5969 | static void | |
5970 | do_t_nop (str) | |
d78c7dca | 5971 | char * str; |
252b5132 | 5972 | { |
28e4f854 | 5973 | /* Do nothing. */ |
252b5132 RH |
5974 | end_of_line (str); |
5975 | return; | |
5976 | } | |
5977 | ||
28e4f854 | 5978 | /* Handle the Format 4 instructions that do not have equivalents in other |
252b5132 RH |
5979 | formats. That is, ADC, AND, EOR, SBC, ROR, TST, NEG, CMN, ORR, MUL, |
5980 | BIC and MVN. */ | |
28e4f854 | 5981 | |
252b5132 RH |
5982 | static void |
5983 | do_t_arit (str) | |
d78c7dca | 5984 | char * str; |
252b5132 RH |
5985 | { |
5986 | int Rd, Rs, Rn; | |
5987 | ||
ae5ad4ad | 5988 | skip_whitespace (str); |
252b5132 | 5989 | |
92a66162 DL |
5990 | if ((Rd = thumb_reg (&str, THUMB_REG_LO)) == FAIL |
5991 | || skip_past_comma (&str) == FAIL | |
252b5132 RH |
5992 | || (Rs = thumb_reg (&str, THUMB_REG_LO)) == FAIL) |
5993 | { | |
28e4f854 KH |
5994 | inst.error = BAD_ARGS; |
5995 | return; | |
252b5132 RH |
5996 | } |
5997 | ||
5998 | if (skip_past_comma (&str) != FAIL) | |
5999 | { | |
6000 | /* Three operand format not allowed for TST, CMN, NEG and MVN. | |
6001 | (It isn't allowed for CMP either, but that isn't handled by this | |
6002 | function.) */ | |
6003 | if (inst.instruction == T_OPCODE_TST | |
6004 | || inst.instruction == T_OPCODE_CMN | |
6005 | || inst.instruction == T_OPCODE_NEG | |
28e4f854 | 6006 | || inst.instruction == T_OPCODE_MVN) |
252b5132 | 6007 | { |
90ca882f | 6008 | inst.error = BAD_ARGS; |
252b5132 RH |
6009 | return; |
6010 | } | |
6011 | ||
6012 | if ((Rn = thumb_reg (&str, THUMB_REG_LO)) == FAIL) | |
6013 | return; | |
6014 | ||
6015 | if (Rs != Rd) | |
6016 | { | |
6017 | inst.error = _("dest and source1 one must be the same register"); | |
6018 | return; | |
6019 | } | |
6020 | Rs = Rn; | |
6021 | } | |
6022 | ||
6023 | if (inst.instruction == T_OPCODE_MUL | |
6024 | && Rs == Rd) | |
6025 | as_tsktsk (_("Rs and Rd must be different in MUL")); | |
6026 | ||
6027 | inst.instruction |= Rd | (Rs << 3); | |
6028 | end_of_line (str); | |
6029 | } | |
6030 | ||
6031 | static void | |
6032 | do_t_add (str) | |
d78c7dca | 6033 | char * str; |
252b5132 RH |
6034 | { |
6035 | thumb_add_sub (str, 0); | |
6036 | } | |
6037 | ||
6038 | static void | |
6039 | do_t_asr (str) | |
d78c7dca | 6040 | char * str; |
252b5132 RH |
6041 | { |
6042 | thumb_shift (str, THUMB_ASR); | |
6043 | } | |
6044 | ||
6045 | static void | |
6046 | do_t_branch9 (str) | |
d78c7dca | 6047 | char * str; |
252b5132 RH |
6048 | { |
6049 | if (my_get_expression (&inst.reloc.exp, &str)) | |
6050 | return; | |
6051 | inst.reloc.type = BFD_RELOC_THUMB_PCREL_BRANCH9; | |
6052 | inst.reloc.pc_rel = 1; | |
6053 | end_of_line (str); | |
6054 | } | |
6055 | ||
6056 | static void | |
6057 | do_t_branch12 (str) | |
d78c7dca | 6058 | char * str; |
252b5132 RH |
6059 | { |
6060 | if (my_get_expression (&inst.reloc.exp, &str)) | |
6061 | return; | |
6062 | inst.reloc.type = BFD_RELOC_THUMB_PCREL_BRANCH12; | |
6063 | inst.reloc.pc_rel = 1; | |
6064 | end_of_line (str); | |
6065 | } | |
6066 | ||
6067 | /* Find the real, Thumb encoded start of a Thumb function. */ | |
6068 | ||
6069 | static symbolS * | |
6070 | find_real_start (symbolP) | |
d78c7dca | 6071 | symbolS * symbolP; |
252b5132 | 6072 | { |
d78c7dca NC |
6073 | char * real_start; |
6074 | const char * name = S_GET_NAME (symbolP); | |
6075 | symbolS * new_target; | |
252b5132 | 6076 | |
28e4f854 | 6077 | /* This definiton must agree with the one in gcc/config/arm/thumb.c. */ |
252b5132 RH |
6078 | #define STUB_NAME ".real_start_of" |
6079 | ||
6080 | if (name == NULL) | |
28e4f854 | 6081 | abort (); |
252b5132 RH |
6082 | |
6083 | /* Names that start with '.' are local labels, not function entry points. | |
6084 | The compiler may generate BL instructions to these labels because it | |
6085 | needs to perform a branch to a far away location. */ | |
6086 | if (name[0] == '.') | |
6087 | return symbolP; | |
28e4f854 | 6088 | |
252b5132 RH |
6089 | real_start = malloc (strlen (name) + strlen (STUB_NAME) + 1); |
6090 | sprintf (real_start, "%s%s", STUB_NAME, name); | |
6091 | ||
6092 | new_target = symbol_find (real_start); | |
28e4f854 | 6093 | |
252b5132 RH |
6094 | if (new_target == NULL) |
6095 | { | |
6096 | as_warn ("Failed to find real start of function: %s\n", name); | |
6097 | new_target = symbolP; | |
6098 | } | |
6099 | ||
6100 | free (real_start); | |
6101 | ||
6102 | return new_target; | |
6103 | } | |
6104 | ||
252b5132 RH |
6105 | static void |
6106 | do_t_branch23 (str) | |
d78c7dca | 6107 | char * str; |
252b5132 | 6108 | { |
d78c7dca | 6109 | if (my_get_expression (& inst.reloc.exp, & str)) |
252b5132 | 6110 | return; |
28e4f854 | 6111 | |
252b5132 RH |
6112 | inst.reloc.type = BFD_RELOC_THUMB_PCREL_BRANCH23; |
6113 | inst.reloc.pc_rel = 1; | |
6114 | end_of_line (str); | |
6115 | ||
6116 | /* If the destination of the branch is a defined symbol which does not have | |
6117 | the THUMB_FUNC attribute, then we must be calling a function which has | |
6118 | the (interfacearm) attribute. We look for the Thumb entry point to that | |
6119 | function and change the branch to refer to that function instead. */ | |
d78c7dca | 6120 | if ( inst.reloc.exp.X_op == O_symbol |
252b5132 RH |
6121 | && inst.reloc.exp.X_add_symbol != NULL |
6122 | && S_IS_DEFINED (inst.reloc.exp.X_add_symbol) | |
6123 | && ! THUMB_IS_FUNC (inst.reloc.exp.X_add_symbol)) | |
28e4f854 KH |
6124 | inst.reloc.exp.X_add_symbol = |
6125 | find_real_start (inst.reloc.exp.X_add_symbol); | |
252b5132 RH |
6126 | } |
6127 | ||
6128 | static void | |
6129 | do_t_bx (str) | |
d78c7dca | 6130 | char * str; |
252b5132 RH |
6131 | { |
6132 | int reg; | |
6133 | ||
ae5ad4ad | 6134 | skip_whitespace (str); |
252b5132 RH |
6135 | |
6136 | if ((reg = thumb_reg (&str, THUMB_REG_ANY)) == FAIL) | |
6137 | return; | |
6138 | ||
6139 | /* This sets THUMB_H2 from the top bit of reg. */ | |
6140 | inst.instruction |= reg << 3; | |
6141 | ||
6142 | /* ??? FIXME: Should add a hacky reloc here if reg is REG_PC. The reloc | |
6143 | should cause the alignment to be checked once it is known. This is | |
6144 | because BX PC only works if the instruction is word aligned. */ | |
6145 | ||
6146 | end_of_line (str); | |
6147 | } | |
6148 | ||
6149 | static void | |
6150 | do_t_compare (str) | |
d78c7dca | 6151 | char * str; |
252b5132 RH |
6152 | { |
6153 | thumb_mov_compare (str, THUMB_COMPARE); | |
6154 | } | |
6155 | ||
6156 | static void | |
6157 | do_t_ldmstm (str) | |
d78c7dca | 6158 | char * str; |
252b5132 RH |
6159 | { |
6160 | int Rb; | |
6161 | long range; | |
6162 | ||
ae5ad4ad | 6163 | skip_whitespace (str); |
252b5132 RH |
6164 | |
6165 | if ((Rb = thumb_reg (&str, THUMB_REG_LO)) == FAIL) | |
6166 | return; | |
6167 | ||
6168 | if (*str != '!') | |
6169 | as_warn (_("Inserted missing '!': load/store multiple always writes back base register")); | |
6170 | else | |
6171 | str++; | |
6172 | ||
6173 | if (skip_past_comma (&str) == FAIL | |
6174 | || (range = reg_list (&str)) == FAIL) | |
6175 | { | |
6176 | if (! inst.error) | |
90ca882f | 6177 | inst.error = BAD_ARGS; |
252b5132 RH |
6178 | return; |
6179 | } | |
6180 | ||
6181 | if (inst.reloc.type != BFD_RELOC_NONE) | |
6182 | { | |
28e4f854 | 6183 | /* This really doesn't seem worth it. */ |
252b5132 RH |
6184 | inst.reloc.type = BFD_RELOC_NONE; |
6185 | inst.error = _("Expression too complex"); | |
6186 | return; | |
6187 | } | |
6188 | ||
6189 | if (range & ~0xff) | |
6190 | { | |
6191 | inst.error = _("only lo-regs valid in load/store multiple"); | |
6192 | return; | |
6193 | } | |
6194 | ||
6195 | inst.instruction |= (Rb << 8) | range; | |
6196 | end_of_line (str); | |
6197 | } | |
6198 | ||
6199 | static void | |
6200 | do_t_ldr (str) | |
d78c7dca | 6201 | char * str; |
252b5132 RH |
6202 | { |
6203 | thumb_load_store (str, THUMB_LOAD, THUMB_WORD); | |
6204 | } | |
6205 | ||
6206 | static void | |
6207 | do_t_ldrb (str) | |
d78c7dca | 6208 | char * str; |
252b5132 RH |
6209 | { |
6210 | thumb_load_store (str, THUMB_LOAD, THUMB_BYTE); | |
6211 | } | |
6212 | ||
6213 | static void | |
6214 | do_t_ldrh (str) | |
d78c7dca | 6215 | char * str; |
252b5132 RH |
6216 | { |
6217 | thumb_load_store (str, THUMB_LOAD, THUMB_HALFWORD); | |
6218 | } | |
6219 | ||
6220 | static void | |
6221 | do_t_lds (str) | |
d78c7dca | 6222 | char * str; |
252b5132 RH |
6223 | { |
6224 | int Rd, Rb, Ro; | |
6225 | ||
ae5ad4ad | 6226 | skip_whitespace (str); |
252b5132 RH |
6227 | |
6228 | if ((Rd = thumb_reg (&str, THUMB_REG_LO)) == FAIL | |
6229 | || skip_past_comma (&str) == FAIL | |
6230 | || *str++ != '[' | |
6231 | || (Rb = thumb_reg (&str, THUMB_REG_LO)) == FAIL | |
6232 | || skip_past_comma (&str) == FAIL | |
6233 | || (Ro = thumb_reg (&str, THUMB_REG_LO)) == FAIL | |
6234 | || *str++ != ']') | |
6235 | { | |
6236 | if (! inst.error) | |
6237 | inst.error = _("Syntax: ldrs[b] Rd, [Rb, Ro]"); | |
6238 | return; | |
6239 | } | |
6240 | ||
6241 | inst.instruction |= Rd | (Rb << 3) | (Ro << 6); | |
6242 | end_of_line (str); | |
6243 | } | |
6244 | ||
6245 | static void | |
6246 | do_t_lsl (str) | |
d78c7dca | 6247 | char * str; |
252b5132 RH |
6248 | { |
6249 | thumb_shift (str, THUMB_LSL); | |
6250 | } | |
6251 | ||
6252 | static void | |
6253 | do_t_lsr (str) | |
d78c7dca | 6254 | char * str; |
252b5132 RH |
6255 | { |
6256 | thumb_shift (str, THUMB_LSR); | |
6257 | } | |
6258 | ||
6259 | static void | |
6260 | do_t_mov (str) | |
d78c7dca | 6261 | char * str; |
252b5132 RH |
6262 | { |
6263 | thumb_mov_compare (str, THUMB_MOVE); | |
6264 | } | |
6265 | ||
6266 | static void | |
6267 | do_t_push_pop (str) | |
d78c7dca | 6268 | char * str; |
252b5132 RH |
6269 | { |
6270 | long range; | |
6271 | ||
ae5ad4ad | 6272 | skip_whitespace (str); |
252b5132 RH |
6273 | |
6274 | if ((range = reg_list (&str)) == FAIL) | |
6275 | { | |
6276 | if (! inst.error) | |
90ca882f | 6277 | inst.error = BAD_ARGS; |
252b5132 RH |
6278 | return; |
6279 | } | |
6280 | ||
6281 | if (inst.reloc.type != BFD_RELOC_NONE) | |
6282 | { | |
28e4f854 | 6283 | /* This really doesn't seem worth it. */ |
252b5132 RH |
6284 | inst.reloc.type = BFD_RELOC_NONE; |
6285 | inst.error = _("Expression too complex"); | |
6286 | return; | |
6287 | } | |
6288 | ||
6289 | if (range & ~0xff) | |
6290 | { | |
6291 | if ((inst.instruction == T_OPCODE_PUSH | |
6292 | && (range & ~0xff) == 1 << REG_LR) | |
6293 | || (inst.instruction == T_OPCODE_POP | |
6294 | && (range & ~0xff) == 1 << REG_PC)) | |
6295 | { | |
6296 | inst.instruction |= THUMB_PP_PC_LR; | |
6297 | range &= 0xff; | |
6298 | } | |
6299 | else | |
6300 | { | |
6301 | inst.error = _("invalid register list to push/pop instruction"); | |
6302 | return; | |
6303 | } | |
6304 | } | |
6305 | ||
6306 | inst.instruction |= range; | |
6307 | end_of_line (str); | |
6308 | } | |
6309 | ||
6310 | static void | |
6311 | do_t_str (str) | |
d78c7dca | 6312 | char * str; |
252b5132 RH |
6313 | { |
6314 | thumb_load_store (str, THUMB_STORE, THUMB_WORD); | |
6315 | } | |
6316 | ||
6317 | static void | |
6318 | do_t_strb (str) | |
d78c7dca | 6319 | char * str; |
252b5132 RH |
6320 | { |
6321 | thumb_load_store (str, THUMB_STORE, THUMB_BYTE); | |
6322 | } | |
6323 | ||
6324 | static void | |
6325 | do_t_strh (str) | |
d78c7dca | 6326 | char * str; |
252b5132 RH |
6327 | { |
6328 | thumb_load_store (str, THUMB_STORE, THUMB_HALFWORD); | |
6329 | } | |
6330 | ||
6331 | static void | |
6332 | do_t_sub (str) | |
d78c7dca | 6333 | char * str; |
252b5132 RH |
6334 | { |
6335 | thumb_add_sub (str, 1); | |
6336 | } | |
6337 | ||
6338 | static void | |
6339 | do_t_swi (str) | |
d78c7dca | 6340 | char * str; |
252b5132 | 6341 | { |
ae5ad4ad | 6342 | skip_whitespace (str); |
252b5132 RH |
6343 | |
6344 | if (my_get_expression (&inst.reloc.exp, &str)) | |
6345 | return; | |
6346 | ||
6347 | inst.reloc.type = BFD_RELOC_ARM_SWI; | |
6348 | end_of_line (str); | |
6349 | return; | |
6350 | } | |
6351 | ||
6352 | static void | |
6353 | do_t_adr (str) | |
d78c7dca | 6354 | char * str; |
252b5132 | 6355 | { |
43f05576 NC |
6356 | int reg; |
6357 | ||
252b5132 | 6358 | /* This is a pseudo-op of the form "adr rd, label" to be converted |
43f05576 | 6359 | into a relative address of the form "add rd, pc, #label-.-4". */ |
ae5ad4ad | 6360 | skip_whitespace (str); |
252b5132 | 6361 | |
43f05576 NC |
6362 | /* Store Rd in temporary location inside instruction. */ |
6363 | if ((reg = reg_required_here (&str, 4)) == FAIL | |
6364 | || (reg > 7) /* For Thumb reg must be r0..r7. */ | |
252b5132 RH |
6365 | || skip_past_comma (&str) == FAIL |
6366 | || my_get_expression (&inst.reloc.exp, &str)) | |
6367 | { | |
6368 | if (!inst.error) | |
90ca882f | 6369 | inst.error = BAD_ARGS; |
252b5132 RH |
6370 | return; |
6371 | } | |
6372 | ||
6373 | inst.reloc.type = BFD_RELOC_ARM_THUMB_ADD; | |
43f05576 | 6374 | inst.reloc.exp.X_add_number -= 4; /* PC relative adjust. */ |
252b5132 | 6375 | inst.reloc.pc_rel = 1; |
43f05576 | 6376 | inst.instruction |= REG_PC; /* Rd is already placed into the instruction. */ |
28e4f854 | 6377 | |
252b5132 RH |
6378 | end_of_line (str); |
6379 | } | |
6380 | ||
6381 | static void | |
6382 | insert_reg (entry) | |
6383 | int entry; | |
6384 | { | |
d78c7dca NC |
6385 | int len = strlen (reg_table[entry].name) + 2; |
6386 | char * buf = (char *) xmalloc (len); | |
6387 | char * buf2 = (char *) xmalloc (len); | |
6388 | int i = 0; | |
252b5132 RH |
6389 | |
6390 | #ifdef REGISTER_PREFIX | |
6391 | buf[i++] = REGISTER_PREFIX; | |
6392 | #endif | |
6393 | ||
6394 | strcpy (buf + i, reg_table[entry].name); | |
6395 | ||
6396 | for (i = 0; buf[i]; i++) | |
6397 | buf2[i] = islower (buf[i]) ? toupper (buf[i]) : buf[i]; | |
6398 | ||
6399 | buf2[i] = '\0'; | |
6400 | ||
d78c7dca NC |
6401 | hash_insert (arm_reg_hsh, buf, (PTR) & reg_table[entry]); |
6402 | hash_insert (arm_reg_hsh, buf2, (PTR) & reg_table[entry]); | |
252b5132 RH |
6403 | } |
6404 | ||
6405 | static void | |
6406 | insert_reg_alias (str, regnum) | |
6407 | char *str; | |
6408 | int regnum; | |
6409 | { | |
6410 | struct reg_entry *new = | |
28e4f854 | 6411 | (struct reg_entry *) xmalloc (sizeof (struct reg_entry)); |
252b5132 RH |
6412 | char *name = xmalloc (strlen (str) + 1); |
6413 | strcpy (name, str); | |
6414 | ||
6415 | new->name = name; | |
6416 | new->number = regnum; | |
6417 | ||
6418 | hash_insert (arm_reg_hsh, name, (PTR) new); | |
6419 | } | |
6420 | ||
6421 | static void | |
6422 | set_constant_flonums () | |
6423 | { | |
6424 | int i; | |
6425 | ||
6426 | for (i = 0; i < NUM_FLOAT_VALS; i++) | |
28e4f854 | 6427 | if (atof_ieee ((char *) fp_const[i], 'x', fp_values[i]) == NULL) |
252b5132 RH |
6428 | abort (); |
6429 | } | |
6430 | ||
6431 | void | |
6432 | md_begin () | |
6433 | { | |
ec9991dc | 6434 | unsigned mach; |
684b81fa | 6435 | unsigned int i; |
28e4f854 | 6436 | |
d78c7dca | 6437 | if ( (arm_ops_hsh = hash_new ()) == NULL |
252b5132 RH |
6438 | || (arm_tops_hsh = hash_new ()) == NULL |
6439 | || (arm_cond_hsh = hash_new ()) == NULL | |
6440 | || (arm_shift_hsh = hash_new ()) == NULL | |
6441 | || (arm_reg_hsh = hash_new ()) == NULL | |
6442 | || (arm_psr_hsh = hash_new ()) == NULL) | |
6443 | as_fatal (_("Virtual memory exhausted")); | |
28e4f854 | 6444 | |
252b5132 RH |
6445 | for (i = 0; i < sizeof (insns) / sizeof (struct asm_opcode); i++) |
6446 | hash_insert (arm_ops_hsh, insns[i].template, (PTR) (insns + i)); | |
6447 | for (i = 0; i < sizeof (tinsns) / sizeof (struct thumb_opcode); i++) | |
6448 | hash_insert (arm_tops_hsh, tinsns[i].template, (PTR) (tinsns + i)); | |
6449 | for (i = 0; i < sizeof (conds) / sizeof (struct asm_cond); i++) | |
6450 | hash_insert (arm_cond_hsh, conds[i].template, (PTR) (conds + i)); | |
8cb8bcba NC |
6451 | for (i = 0; i < sizeof (shift_names) / sizeof (struct asm_shift_name); i++) |
6452 | hash_insert (arm_shift_hsh, shift_names[i].name, (PTR) (shift_names + i)); | |
252b5132 RH |
6453 | for (i = 0; i < sizeof (psrs) / sizeof (struct asm_psr); i++) |
6454 | hash_insert (arm_psr_hsh, psrs[i].template, (PTR) (psrs + i)); | |
6455 | ||
6456 | for (i = 0; reg_table[i].name; i++) | |
6457 | insert_reg (i); | |
6458 | ||
6459 | set_constant_flonums (); | |
6460 | ||
6461 | #if defined OBJ_COFF || defined OBJ_ELF | |
6462 | { | |
6463 | unsigned int flags = 0; | |
28e4f854 | 6464 | |
ec9991dc | 6465 | /* Set the flags in the private structure. */ |
252b5132 RH |
6466 | if (uses_apcs_26) flags |= F_APCS26; |
6467 | if (support_interwork) flags |= F_INTERWORK; | |
6468 | if (uses_apcs_float) flags |= F_APCS_FLOAT; | |
6469 | if (pic_code) flags |= F_PIC; | |
2f992c04 | 6470 | if ((cpu_variant & FPU_ALL) == FPU_NONE) flags |= F_SOFT_FLOAT; |
252b5132 RH |
6471 | |
6472 | bfd_set_private_flags (stdoutput, flags); | |
077b8428 NC |
6473 | |
6474 | /* We have run out flags in the COFF header to encode the | |
6475 | status of ATPCS support, so instead we create a dummy, | |
6476 | empty, debug section called .arm.atpcs. */ | |
6477 | if (atpcs) | |
6478 | { | |
6479 | asection * sec; | |
bc805888 | 6480 | |
077b8428 NC |
6481 | sec = bfd_make_section (stdoutput, ".arm.atpcs"); |
6482 | ||
6483 | if (sec != NULL) | |
6484 | { | |
6485 | bfd_set_section_flags | |
6486 | (stdoutput, sec, SEC_READONLY | SEC_DEBUGGING /* | SEC_HAS_CONTENTS */); | |
6487 | bfd_set_section_size (stdoutput, sec, 0); | |
6488 | bfd_set_section_contents (stdoutput, sec, NULL, 0, 0); | |
6489 | } | |
6490 | } | |
252b5132 RH |
6491 | } |
6492 | #endif | |
28e4f854 | 6493 | |
ec9991dc NC |
6494 | /* Record the CPU type as well. */ |
6495 | switch (cpu_variant & ARM_CPU_MASK) | |
6496 | { | |
6497 | case ARM_2: | |
6498 | mach = bfd_mach_arm_2; | |
6499 | break; | |
28e4f854 | 6500 | |
ec9991dc NC |
6501 | case ARM_3: /* Also ARM_250. */ |
6502 | mach = bfd_mach_arm_2a; | |
6503 | break; | |
28e4f854 | 6504 | |
ec9991dc NC |
6505 | default: |
6506 | case ARM_6 | ARM_3 | ARM_2: /* Actually no CPU type defined. */ | |
6507 | mach = bfd_mach_arm_4; | |
6508 | break; | |
28e4f854 | 6509 | |
ec9991dc NC |
6510 | case ARM_7: /* Also ARM_6. */ |
6511 | mach = bfd_mach_arm_3; | |
6512 | break; | |
6513 | } | |
28e4f854 | 6514 | |
ec9991dc | 6515 | /* Catch special cases. */ |
83e7603d NC |
6516 | if (cpu_variant & ARM_EXT_XSCALE) |
6517 | mach = bfd_mach_arm_XScale; | |
6518 | else if (cpu_variant & ARM_EXT_V5E) | |
6519 | mach = bfd_mach_arm_5TE; | |
6520 | else if (cpu_variant & ARM_EXT_V5) | |
6521 | { | |
6522 | if (cpu_variant & ARM_EXT_THUMB) | |
6523 | mach = bfd_mach_arm_5T; | |
6524 | else | |
6525 | mach = bfd_mach_arm_5; | |
6526 | } | |
6527 | else if (cpu_variant & ARM_EXT_HALFWORD) | |
ec9991dc | 6528 | { |
83e7603d NC |
6529 | if (cpu_variant & ARM_EXT_THUMB) |
6530 | mach = bfd_mach_arm_4T; | |
6531 | else | |
6532 | mach = bfd_mach_arm_4; | |
ec9991dc | 6533 | } |
83e7603d NC |
6534 | else if (cpu_variant & ARM_EXT_LONGMUL) |
6535 | mach = bfd_mach_arm_3M; | |
28e4f854 | 6536 | |
ec9991dc | 6537 | bfd_set_arch_mach (stdoutput, TARGET_ARCH, mach); |
252b5132 RH |
6538 | } |
6539 | ||
6540 | /* Turn an integer of n bytes (in val) into a stream of bytes appropriate | |
6541 | for use in the a.out file, and stores them in the array pointed to by buf. | |
6542 | This knows about the endian-ness of the target machine and does | |
6543 | THE RIGHT THING, whatever it is. Possible values for n are 1 (byte) | |
6544 | 2 (short) and 4 (long) Floating numbers are put out as a series of | |
ae5ad4ad | 6545 | LITTLENUMS (shorts, here at least). */ |
28e4f854 | 6546 | |
252b5132 RH |
6547 | void |
6548 | md_number_to_chars (buf, val, n) | |
d78c7dca | 6549 | char * buf; |
252b5132 | 6550 | valueT val; |
d78c7dca | 6551 | int n; |
252b5132 RH |
6552 | { |
6553 | if (target_big_endian) | |
6554 | number_to_chars_bigendian (buf, val, n); | |
6555 | else | |
6556 | number_to_chars_littleendian (buf, val, n); | |
6557 | } | |
6558 | ||
28e4f854 | 6559 | static valueT |
252b5132 | 6560 | md_chars_to_number (buf, n) |
d78c7dca NC |
6561 | char * buf; |
6562 | int n; | |
252b5132 RH |
6563 | { |
6564 | valueT result = 0; | |
d78c7dca | 6565 | unsigned char * where = (unsigned char *) buf; |
252b5132 RH |
6566 | |
6567 | if (target_big_endian) | |
6568 | { | |
6569 | while (n--) | |
6570 | { | |
6571 | result <<= 8; | |
6572 | result |= (*where++ & 255); | |
6573 | } | |
6574 | } | |
6575 | else | |
6576 | { | |
6577 | while (n--) | |
6578 | { | |
6579 | result <<= 8; | |
6580 | result |= (where[n] & 255); | |
6581 | } | |
6582 | } | |
6583 | ||
6584 | return result; | |
6585 | } | |
6586 | ||
6587 | /* Turn a string in input_line_pointer into a floating point constant | |
28e4f854 KH |
6588 | of type TYPE, and store the appropriate bytes in *LITP. The number |
6589 | of LITTLENUMS emitted is stored in *SIZEP. An error message is | |
252b5132 RH |
6590 | returned, or NULL on OK. |
6591 | ||
6592 | Note that fp constants aren't represent in the normal way on the ARM. | |
6593 | In big endian mode, things are as expected. However, in little endian | |
6594 | mode fp constants are big-endian word-wise, and little-endian byte-wise | |
6595 | within the words. For example, (double) 1.1 in big endian mode is | |
6596 | the byte sequence 3f f1 99 99 99 99 99 9a, and in little endian mode is | |
6597 | the byte sequence 99 99 f1 3f 9a 99 99 99. | |
6598 | ||
6599 | ??? The format of 12 byte floats is uncertain according to gcc's arm.h. */ | |
6600 | ||
6601 | char * | |
6602 | md_atof (type, litP, sizeP) | |
d78c7dca NC |
6603 | char type; |
6604 | char * litP; | |
6605 | int * sizeP; | |
252b5132 RH |
6606 | { |
6607 | int prec; | |
6608 | LITTLENUM_TYPE words[MAX_LITTLENUMS]; | |
6609 | char *t; | |
6610 | int i; | |
6611 | ||
6612 | switch (type) | |
6613 | { | |
6614 | case 'f': | |
6615 | case 'F': | |
6616 | case 's': | |
6617 | case 'S': | |
6618 | prec = 2; | |
6619 | break; | |
6620 | ||
6621 | case 'd': | |
6622 | case 'D': | |
6623 | case 'r': | |
6624 | case 'R': | |
6625 | prec = 4; | |
6626 | break; | |
6627 | ||
6628 | case 'x': | |
6629 | case 'X': | |
6630 | prec = 6; | |
6631 | break; | |
6632 | ||
6633 | case 'p': | |
6634 | case 'P': | |
6635 | prec = 6; | |
6636 | break; | |
6637 | ||
6638 | default: | |
6639 | *sizeP = 0; | |
6640 | return _("Bad call to MD_ATOF()"); | |
6641 | } | |
6642 | ||
6643 | t = atof_ieee (input_line_pointer, type, words); | |
6644 | if (t) | |
6645 | input_line_pointer = t; | |
6646 | *sizeP = prec * 2; | |
6647 | ||
6648 | if (target_big_endian) | |
6649 | { | |
6650 | for (i = 0; i < prec; i++) | |
6651 | { | |
6652 | md_number_to_chars (litP, (valueT) words[i], 2); | |
6653 | litP += 2; | |
6654 | } | |
6655 | } | |
6656 | else | |
6657 | { | |
6658 | /* For a 4 byte float the order of elements in `words' is 1 0. For an | |
6659 | 8 byte float the order is 1 0 3 2. */ | |
6660 | for (i = 0; i < prec; i += 2) | |
6661 | { | |
6662 | md_number_to_chars (litP, (valueT) words[i + 1], 2); | |
6663 | md_number_to_chars (litP + 2, (valueT) words[i], 2); | |
6664 | litP += 4; | |
6665 | } | |
6666 | } | |
6667 | ||
6668 | return 0; | |
6669 | } | |
6670 | ||
28e4f854 KH |
6671 | /* The knowledge of the PC's pipeline offset is built into the insns |
6672 | themselves. */ | |
6673 | ||
252b5132 RH |
6674 | long |
6675 | md_pcrel_from (fixP) | |
d78c7dca | 6676 | fixS * fixP; |
252b5132 | 6677 | { |
28e4f854 | 6678 | if (fixP->fx_addsy |
252b5132 RH |
6679 | && S_GET_SEGMENT (fixP->fx_addsy) == undefined_section |
6680 | && fixP->fx_subsy == NULL) | |
6681 | return 0; | |
28e4f854 | 6682 | |
252b5132 RH |
6683 | if (fixP->fx_pcrel && (fixP->fx_r_type == BFD_RELOC_ARM_THUMB_ADD)) |
6684 | { | |
6685 | /* PC relative addressing on the Thumb is slightly odd | |
6686 | as the bottom two bits of the PC are forced to zero | |
ae5ad4ad | 6687 | for the calculation. */ |
252b5132 RH |
6688 | return (fixP->fx_where + fixP->fx_frag->fr_address) & ~3; |
6689 | } | |
661e4995 | 6690 | |
056350c6 NC |
6691 | #ifdef TE_WINCE |
6692 | /* The pattern was adjusted to accomodate CE's off-by-one fixups, | |
6693 | so we un-adjust here to compensate for the accomodation. */ | |
6694 | return fixP->fx_where + fixP->fx_frag->fr_address + 8; | |
6695 | #else | |
252b5132 | 6696 | return fixP->fx_where + fixP->fx_frag->fr_address; |
056350c6 | 6697 | #endif |
252b5132 RH |
6698 | } |
6699 | ||
28e4f854 KH |
6700 | /* Round up a section size to the appropriate boundary. */ |
6701 | ||
252b5132 RH |
6702 | valueT |
6703 | md_section_align (segment, size) | |
684b81fa | 6704 | segT segment ATTRIBUTE_UNUSED; |
252b5132 RH |
6705 | valueT size; |
6706 | { | |
6707 | #ifdef OBJ_ELF | |
5856c19a | 6708 | return size; |
231b5e29 | 6709 | #else |
28e4f854 | 6710 | /* Round all sects to multiple of 4. */ |
252b5132 | 6711 | return (size + 3) & ~3; |
231b5e29 | 6712 | #endif |
252b5132 RH |
6713 | } |
6714 | ||
28e4f854 KH |
6715 | /* Under ELF we need to default _GLOBAL_OFFSET_TABLE. |
6716 | Otherwise we have no need to default values of symbols. */ | |
252b5132 | 6717 | |
252b5132 RH |
6718 | symbolS * |
6719 | md_undefined_symbol (name) | |
d78c7dca | 6720 | char * name ATTRIBUTE_UNUSED; |
252b5132 RH |
6721 | { |
6722 | #ifdef OBJ_ELF | |
6723 | if (name[0] == '_' && name[1] == 'G' | |
6724 | && streq (name, GLOBAL_OFFSET_TABLE_NAME)) | |
6725 | { | |
6726 | if (!GOT_symbol) | |
6727 | { | |
6728 | if (symbol_find (name)) | |
6729 | as_bad ("GOT already in the symbol table"); | |
28e4f854 | 6730 | |
252b5132 | 6731 | GOT_symbol = symbol_new (name, undefined_section, |
d78c7dca | 6732 | (valueT) 0, & zero_address_frag); |
252b5132 | 6733 | } |
28e4f854 | 6734 | |
252b5132 RH |
6735 | return GOT_symbol; |
6736 | } | |
6737 | #endif | |
28e4f854 | 6738 | |
252b5132 RH |
6739 | return 0; |
6740 | } | |
6741 | ||
28e4f854 KH |
6742 | /* arm_reg_parse () := if it looks like a register, return its token and |
6743 | advance the pointer. */ | |
252b5132 RH |
6744 | |
6745 | static int | |
6746 | arm_reg_parse (ccp) | |
d78c7dca | 6747 | register char ** ccp; |
252b5132 | 6748 | { |
d78c7dca NC |
6749 | char * start = * ccp; |
6750 | char c; | |
6751 | char * p; | |
6752 | struct reg_entry * reg; | |
252b5132 RH |
6753 | |
6754 | #ifdef REGISTER_PREFIX | |
6755 | if (*start != REGISTER_PREFIX) | |
6756 | return FAIL; | |
6757 | p = start + 1; | |
6758 | #else | |
6759 | p = start; | |
6760 | #ifdef OPTIONAL_REGISTER_PREFIX | |
6761 | if (*p == OPTIONAL_REGISTER_PREFIX) | |
6762 | p++, start++; | |
6763 | #endif | |
6764 | #endif | |
6765 | if (!isalpha (*p) || !is_name_beginner (*p)) | |
6766 | return FAIL; | |
6767 | ||
6768 | c = *p++; | |
6769 | while (isalpha (c) || isdigit (c) || c == '_') | |
6770 | c = *p++; | |
6771 | ||
6772 | *--p = 0; | |
6773 | reg = (struct reg_entry *) hash_find (arm_reg_hsh, start); | |
6774 | *p = c; | |
28e4f854 | 6775 | |
252b5132 RH |
6776 | if (reg) |
6777 | { | |
6778 | *ccp = p; | |
6779 | return reg->number; | |
6780 | } | |
6781 | ||
6782 | return FAIL; | |
6783 | } | |
6784 | ||
252b5132 RH |
6785 | int |
6786 | md_apply_fix3 (fixP, val, seg) | |
d78c7dca NC |
6787 | fixS * fixP; |
6788 | valueT * val; | |
6789 | segT seg; | |
6790 | { | |
6791 | offsetT value = * val; | |
6792 | offsetT newval; | |
6793 | unsigned int newimm; | |
6794 | unsigned long temp; | |
6795 | int sign; | |
6796 | char * buf = fixP->fx_where + fixP->fx_frag->fr_literal; | |
6797 | arm_fix_data * arm_data = (arm_fix_data *) fixP->tc_fix_data; | |
252b5132 RH |
6798 | |
6799 | assert (fixP->fx_r_type < BFD_RELOC_UNUSED); | |
6800 | ||
6801 | /* Note whether this will delete the relocation. */ | |
28e4f854 KH |
6802 | #if 0 |
6803 | /* Patch from REarnshaw to JDavis (disabled for the moment, since it | |
6804 | doesn't work fully.) */ | |
a77f5182 | 6805 | if ((fixP->fx_addsy == 0 || symbol_constant_p (fixP->fx_addsy)) |
252b5132 RH |
6806 | && !fixP->fx_pcrel) |
6807 | #else | |
6808 | if (fixP->fx_addsy == 0 && !fixP->fx_pcrel) | |
6809 | #endif | |
6810 | fixP->fx_done = 1; | |
6811 | ||
6812 | /* If this symbol is in a different section then we need to leave it for | |
6813 | the linker to deal with. Unfortunately, md_pcrel_from can't tell, | |
6814 | so we have to undo it's effects here. */ | |
6815 | if (fixP->fx_pcrel) | |
6816 | { | |
6817 | if (fixP->fx_addsy != NULL | |
6818 | && S_IS_DEFINED (fixP->fx_addsy) | |
6819 | && S_GET_SEGMENT (fixP->fx_addsy) != seg) | |
6820 | { | |
661e4995 | 6821 | if (target_oabi |
92a66162 | 6822 | && (fixP->fx_r_type == BFD_RELOC_ARM_PCREL_BRANCH |
28e4f854 KH |
6823 | || fixP->fx_r_type == BFD_RELOC_ARM_PCREL_BLX |
6824 | )) | |
252b5132 RH |
6825 | value = 0; |
6826 | else | |
6827 | value += md_pcrel_from (fixP); | |
6828 | } | |
6829 | } | |
6830 | ||
28e4f854 KH |
6831 | /* Remember value for emit_reloc. */ |
6832 | fixP->fx_addnumber = value; | |
252b5132 RH |
6833 | |
6834 | switch (fixP->fx_r_type) | |
6835 | { | |
6836 | case BFD_RELOC_ARM_IMMEDIATE: | |
6837 | newimm = validate_immediate (value); | |
6838 | temp = md_chars_to_number (buf, INSN_SIZE); | |
6839 | ||
6840 | /* If the instruction will fail, see if we can fix things up by | |
6841 | changing the opcode. */ | |
6842 | if (newimm == (unsigned int) FAIL | |
6843 | && (newimm = negate_data_op (&temp, value)) == (unsigned int) FAIL) | |
6844 | { | |
6845 | as_bad_where (fixP->fx_file, fixP->fx_line, | |
11450271 | 6846 | _("invalid constant (%lx) after fixup"), |
3d103319 | 6847 | (unsigned long) value); |
252b5132 RH |
6848 | break; |
6849 | } | |
6850 | ||
6851 | newimm |= (temp & 0xfffff000); | |
6852 | md_number_to_chars (buf, (valueT) newimm, INSN_SIZE); | |
6853 | break; | |
6854 | ||
49a5575c NC |
6855 | case BFD_RELOC_ARM_ADRL_IMMEDIATE: |
6856 | { | |
6857 | unsigned int highpart = 0; | |
28e4f854 | 6858 | unsigned int newinsn = 0xe1a00000; /* nop. */ |
49a5575c NC |
6859 | newimm = validate_immediate (value); |
6860 | temp = md_chars_to_number (buf, INSN_SIZE); | |
6861 | ||
6862 | /* If the instruction will fail, see if we can fix things up by | |
6863 | changing the opcode. */ | |
6864 | if (newimm == (unsigned int) FAIL | |
d78c7dca | 6865 | && (newimm = negate_data_op (& temp, value)) == (unsigned int) FAIL) |
49a5575c | 6866 | { |
28e4f854 KH |
6867 | /* No ? OK - try using two ADD instructions to generate |
6868 | the value. */ | |
d78c7dca | 6869 | newimm = validate_immediate_twopart (value, & highpart); |
49a5575c | 6870 | |
28e4f854 KH |
6871 | /* Yes - then make sure that the second instruction is |
6872 | also an add. */ | |
49a5575c NC |
6873 | if (newimm != (unsigned int) FAIL) |
6874 | newinsn = temp; | |
6875 | /* Still No ? Try using a negated value. */ | |
e0e3ecca | 6876 | else if ((newimm = validate_immediate_twopart (- value, & highpart)) != (unsigned int) FAIL) |
28e4f854 | 6877 | temp = newinsn = (temp & OPCODE_MASK) | OPCODE_SUB << DATA_OP_SHIFT; |
49a5575c NC |
6878 | /* Otherwise - give up. */ |
6879 | else | |
6880 | { | |
6881 | as_bad_where (fixP->fx_file, fixP->fx_line, | |
077b8428 | 6882 | _("Unable to compute ADRL instructions for PC offset of 0x%lx"), |
28e4f854 | 6883 | value); |
49a5575c NC |
6884 | break; |
6885 | } | |
6886 | ||
28e4f854 KH |
6887 | /* Replace the first operand in the 2nd instruction (which |
6888 | is the PC) with the destination register. We have | |
6889 | already added in the PC in the first instruction and we | |
6890 | do not want to do it again. */ | |
004af544 | 6891 | newinsn &= ~ 0xf0000; |
49a5575c NC |
6892 | newinsn |= ((newinsn & 0x0f000) << 4); |
6893 | } | |
6894 | ||
6895 | newimm |= (temp & 0xfffff000); | |
6896 | md_number_to_chars (buf, (valueT) newimm, INSN_SIZE); | |
6897 | ||
6898 | highpart |= (newinsn & 0xfffff000); | |
6899 | md_number_to_chars (buf + INSN_SIZE, (valueT) highpart, INSN_SIZE); | |
6900 | } | |
6901 | break; | |
6902 | ||
6903 | case BFD_RELOC_ARM_OFFSET_IMM: | |
252b5132 | 6904 | sign = value >= 0; |
28e4f854 | 6905 | |
276b1dc2 | 6906 | if (value < 0) |
004af544 | 6907 | value = - value; |
28e4f854 | 6908 | |
276b1dc2 | 6909 | if (validate_offset_imm (value, 0) == FAIL) |
28e4f854 KH |
6910 | { |
6911 | as_bad_where (fixP->fx_file, fixP->fx_line, | |
6912 | _("bad immediate value for offset (%ld)"), | |
6913 | (long) value); | |
6914 | break; | |
6915 | } | |
252b5132 RH |
6916 | |
6917 | newval = md_chars_to_number (buf, INSN_SIZE); | |
6918 | newval &= 0xff7ff000; | |
6919 | newval |= value | (sign ? INDEX_UP : 0); | |
6920 | md_number_to_chars (buf, newval, INSN_SIZE); | |
6921 | break; | |
6922 | ||
28e4f854 KH |
6923 | case BFD_RELOC_ARM_OFFSET_IMM8: |
6924 | case BFD_RELOC_ARM_HWLITERAL: | |
252b5132 | 6925 | sign = value >= 0; |
28e4f854 | 6926 | |
276b1dc2 | 6927 | if (value < 0) |
004af544 | 6928 | value = - value; |
276b1dc2 NC |
6929 | |
6930 | if (validate_offset_imm (value, 1) == FAIL) | |
28e4f854 KH |
6931 | { |
6932 | if (fixP->fx_r_type == BFD_RELOC_ARM_HWLITERAL) | |
6933 | as_bad_where (fixP->fx_file, fixP->fx_line, | |
6934 | _("invalid literal constant: pool needs to be closer")); | |
6935 | else | |
6936 | as_bad (_("bad immediate value for half-word offset (%ld)"), | |
50f4163f | 6937 | (long) value); |
28e4f854 KH |
6938 | break; |
6939 | } | |
252b5132 | 6940 | |
252b5132 RH |
6941 | newval = md_chars_to_number (buf, INSN_SIZE); |
6942 | newval &= 0xff7ff0f0; | |
3d103319 | 6943 | newval |= ((value >> 4) << 8) | (value & 0xf) | (sign ? INDEX_UP : 0); |
252b5132 RH |
6944 | md_number_to_chars (buf, newval, INSN_SIZE); |
6945 | break; | |
6946 | ||
6947 | case BFD_RELOC_ARM_LITERAL: | |
6948 | sign = value >= 0; | |
28e4f854 | 6949 | |
252b5132 | 6950 | if (value < 0) |
004af544 | 6951 | value = - value; |
252b5132 | 6952 | |
276b1dc2 | 6953 | if (validate_offset_imm (value, 0) == FAIL) |
252b5132 | 6954 | { |
28e4f854 | 6955 | as_bad_where (fixP->fx_file, fixP->fx_line, |
11450271 | 6956 | _("invalid literal constant: pool needs to be closer")); |
252b5132 RH |
6957 | break; |
6958 | } | |
6959 | ||
6960 | newval = md_chars_to_number (buf, INSN_SIZE); | |
6961 | newval &= 0xff7ff000; | |
6962 | newval |= value | (sign ? INDEX_UP : 0); | |
6963 | md_number_to_chars (buf, newval, INSN_SIZE); | |
6964 | break; | |
6965 | ||
6966 | case BFD_RELOC_ARM_SHIFT_IMM: | |
6967 | newval = md_chars_to_number (buf, INSN_SIZE); | |
6968 | if (((unsigned long) value) > 32 | |
28e4f854 | 6969 | || (value == 32 |
252b5132 RH |
6970 | && (((newval & 0x60) == 0) || (newval & 0x60) == 0x60))) |
6971 | { | |
6972 | as_bad_where (fixP->fx_file, fixP->fx_line, | |
6973 | _("shift expression is too large")); | |
6974 | break; | |
6975 | } | |
6976 | ||
6977 | if (value == 0) | |
28e4f854 KH |
6978 | /* Shifts of zero must be done as lsl. */ |
6979 | newval &= ~0x60; | |
252b5132 RH |
6980 | else if (value == 32) |
6981 | value = 0; | |
6982 | newval &= 0xfffff07f; | |
6983 | newval |= (value & 0x1f) << 7; | |
28e4f854 | 6984 | md_number_to_chars (buf, newval, INSN_SIZE); |
252b5132 RH |
6985 | break; |
6986 | ||
6987 | case BFD_RELOC_ARM_SWI: | |
6988 | if (arm_data->thumb_mode) | |
6989 | { | |
6990 | if (((unsigned long) value) > 0xff) | |
6991 | as_bad_where (fixP->fx_file, fixP->fx_line, | |
6992 | _("Invalid swi expression")); | |
6993 | newval = md_chars_to_number (buf, THUMB_SIZE) & 0xff00; | |
6994 | newval |= value; | |
6995 | md_number_to_chars (buf, newval, THUMB_SIZE); | |
6996 | } | |
6997 | else | |
6998 | { | |
6999 | if (((unsigned long) value) > 0x00ffffff) | |
28e4f854 | 7000 | as_bad_where (fixP->fx_file, fixP->fx_line, |
252b5132 RH |
7001 | _("Invalid swi expression")); |
7002 | newval = md_chars_to_number (buf, INSN_SIZE) & 0xff000000; | |
7003 | newval |= value; | |
28e4f854 | 7004 | md_number_to_chars (buf, newval, INSN_SIZE); |
252b5132 RH |
7005 | } |
7006 | break; | |
7007 | ||
7008 | case BFD_RELOC_ARM_MULTI: | |
7009 | if (((unsigned long) value) > 0xffff) | |
7010 | as_bad_where (fixP->fx_file, fixP->fx_line, | |
7011 | _("Invalid expression in load/store multiple")); | |
7012 | newval = value | md_chars_to_number (buf, INSN_SIZE); | |
7013 | md_number_to_chars (buf, newval, INSN_SIZE); | |
7014 | break; | |
7015 | ||
7016 | case BFD_RELOC_ARM_PCREL_BRANCH: | |
7017 | newval = md_chars_to_number (buf, INSN_SIZE); | |
661e4995 | 7018 | |
67231402 | 7019 | /* Sign-extend a 24-bit number. */ |
d78c7dca | 7020 | #define SEXT24(x) ((((x) & 0xffffff) ^ (~ 0x7fffff)) + 0x800000) |
67231402 | 7021 | |
252b5132 | 7022 | #ifdef OBJ_ELF |
252b5132 | 7023 | if (! target_oabi) |
67231402 NC |
7024 | value = fixP->fx_offset; |
7025 | #endif | |
7026 | ||
7027 | /* We are going to store value (shifted right by two) in the | |
7028 | instruction, in a 24 bit, signed field. Thus we need to check | |
7029 | that none of the top 8 bits of the shifted value (top 7 bits of | |
7030 | the unshifted, unsigned value) are set, or that they are all set. */ | |
d78c7dca NC |
7031 | if ((value & ~ ((offsetT) 0x1ffffff)) != 0 |
7032 | && ((value & ~ ((offsetT) 0x1ffffff)) != ~ ((offsetT) 0x1ffffff))) | |
67231402 NC |
7033 | { |
7034 | #ifdef OBJ_ELF | |
7035 | /* Normally we would be stuck at this point, since we cannot store | |
7036 | the absolute address that is the destination of the branch in the | |
7037 | 24 bits of the branch instruction. If however, we happen to know | |
7038 | that the destination of the branch is in the same section as the | |
7039 | branch instruciton itself, then we can compute the relocation for | |
7040 | ourselves and not have to bother the linker with it. | |
28e4f854 | 7041 | |
67231402 NC |
7042 | FIXME: The tests for OBJ_ELF and ! target_oabi are only here |
7043 | because I have not worked out how to do this for OBJ_COFF or | |
7044 | target_oabi. */ | |
7045 | if (! target_oabi | |
7046 | && fixP->fx_addsy != NULL | |
7047 | && S_IS_DEFINED (fixP->fx_addsy) | |
7048 | && S_GET_SEGMENT (fixP->fx_addsy) == seg) | |
7049 | { | |
7050 | /* Get pc relative value to go into the branch. */ | |
d78c7dca | 7051 | value = * val; |
67231402 | 7052 | |
28e4f854 KH |
7053 | /* Permit a backward branch provided that enough bits |
7054 | are set. Allow a forwards branch, provided that | |
7055 | enough bits are clear. */ | |
d78c7dca NC |
7056 | if ( (value & ~ ((offsetT) 0x1ffffff)) == ~ ((offsetT) 0x1ffffff) |
7057 | || (value & ~ ((offsetT) 0x1ffffff)) == 0) | |
67231402 NC |
7058 | fixP->fx_done = 1; |
7059 | } | |
28e4f854 | 7060 | |
67231402 | 7061 | if (! fixP->fx_done) |
252b5132 | 7062 | #endif |
67231402 NC |
7063 | as_bad_where (fixP->fx_file, fixP->fx_line, |
7064 | _("gas can't handle same-section branch dest >= 0x04000000")); | |
7065 | } | |
7066 | ||
7067 | value >>= 2; | |
7068 | value += SEXT24 (newval); | |
28e4f854 | 7069 | |
d78c7dca NC |
7070 | if ( (value & ~ ((offsetT) 0xffffff)) != 0 |
7071 | && ((value & ~ ((offsetT) 0xffffff)) != ~ ((offsetT) 0xffffff))) | |
67231402 NC |
7072 | as_bad_where (fixP->fx_file, fixP->fx_line, |
7073 | _("out of range branch")); | |
28e4f854 | 7074 | |
67231402 | 7075 | newval = (value & 0x00ffffff) | (newval & 0xff000000); |
252b5132 RH |
7076 | md_number_to_chars (buf, newval, INSN_SIZE); |
7077 | break; | |
7078 | ||
d92b1a8a NC |
7079 | case BFD_RELOC_ARM_PCREL_BLX: |
7080 | { | |
7081 | offsetT hbit; | |
28e4f854 | 7082 | newval = md_chars_to_number (buf, INSN_SIZE); |
d92b1a8a NC |
7083 | |
7084 | #ifdef OBJ_ELF | |
28e4f854 KH |
7085 | if (! target_oabi) |
7086 | value = fixP->fx_offset; | |
d92b1a8a NC |
7087 | #endif |
7088 | hbit = (value >> 1) & 1; | |
28e4f854 KH |
7089 | value = (value >> 2) & 0x00ffffff; |
7090 | value = (value + (newval & 0x00ffffff)) & 0x00ffffff; | |
7091 | newval = value | (newval & 0xfe000000) | (hbit << 24); | |
7092 | md_number_to_chars (buf, newval, INSN_SIZE); | |
d92b1a8a NC |
7093 | } |
7094 | break; | |
92a66162 | 7095 | |
28e4f854 | 7096 | case BFD_RELOC_THUMB_PCREL_BRANCH9: /* Conditional branch. */ |
252b5132 RH |
7097 | newval = md_chars_to_number (buf, THUMB_SIZE); |
7098 | { | |
28e4f854 KH |
7099 | addressT diff = (newval & 0xff) << 1; |
7100 | if (diff & 0x100) | |
7101 | diff |= ~0xff; | |
7102 | ||
7103 | value += diff; | |
7104 | if ((value & ~0xff) && ((value & ~0xff) != ~0xff)) | |
7105 | as_bad_where (fixP->fx_file, fixP->fx_line, | |
7106 | _("Branch out of range")); | |
7107 | newval = (newval & 0xff00) | ((value & 0x1ff) >> 1); | |
252b5132 RH |
7108 | } |
7109 | md_number_to_chars (buf, newval, THUMB_SIZE); | |
7110 | break; | |
7111 | ||
28e4f854 | 7112 | case BFD_RELOC_THUMB_PCREL_BRANCH12: /* Unconditional branch. */ |
252b5132 RH |
7113 | newval = md_chars_to_number (buf, THUMB_SIZE); |
7114 | { | |
28e4f854 KH |
7115 | addressT diff = (newval & 0x7ff) << 1; |
7116 | if (diff & 0x800) | |
7117 | diff |= ~0x7ff; | |
7118 | ||
7119 | value += diff; | |
7120 | if ((value & ~0x7ff) && ((value & ~0x7ff) != ~0x7ff)) | |
7121 | as_bad_where (fixP->fx_file, fixP->fx_line, | |
7122 | _("Branch out of range")); | |
7123 | newval = (newval & 0xf800) | ((value & 0xfff) >> 1); | |
252b5132 RH |
7124 | } |
7125 | md_number_to_chars (buf, newval, THUMB_SIZE); | |
7126 | break; | |
7127 | ||
d92b1a8a | 7128 | case BFD_RELOC_THUMB_PCREL_BLX: |
252b5132 RH |
7129 | case BFD_RELOC_THUMB_PCREL_BRANCH23: |
7130 | { | |
28e4f854 KH |
7131 | offsetT newval2; |
7132 | addressT diff; | |
252b5132 RH |
7133 | |
7134 | newval = md_chars_to_number (buf, THUMB_SIZE); | |
28e4f854 KH |
7135 | newval2 = md_chars_to_number (buf + THUMB_SIZE, THUMB_SIZE); |
7136 | diff = ((newval & 0x7ff) << 12) | ((newval2 & 0x7ff) << 1); | |
7137 | if (diff & 0x400000) | |
252b5132 | 7138 | diff |= ~0x3fffff; |
ae5ad4ad NC |
7139 | #ifdef OBJ_ELF |
7140 | value = fixP->fx_offset; | |
7141 | #endif | |
28e4f854 KH |
7142 | value += diff; |
7143 | if ((value & ~0x3fffff) && ((value & ~0x3fffff) != ~0x3fffff)) | |
252b5132 RH |
7144 | as_bad_where (fixP->fx_file, fixP->fx_line, |
7145 | _("Branch with link out of range")); | |
7146 | ||
28e4f854 KH |
7147 | newval = (newval & 0xf800) | ((value & 0x7fffff) >> 12); |
7148 | newval2 = (newval2 & 0xf800) | ((value & 0xfff) >> 1); | |
4f3c3dbb NC |
7149 | if (fixP->fx_r_type == BFD_RELOC_THUMB_PCREL_BLX) |
7150 | /* Remove bit zero of the adjusted offset. Bit zero can only be | |
7151 | set if the upper insn is at a half-word boundary, since the | |
7152 | destination address, an ARM instruction, must always be on a | |
7153 | word boundary. The semantics of the BLX (1) instruction, however, | |
7154 | are that bit zero in the offset must always be zero, and the | |
7155 | corresponding bit one in the target address will be set from bit | |
7156 | one of the source address. */ | |
7157 | newval2 &= ~1; | |
28e4f854 KH |
7158 | md_number_to_chars (buf, newval, THUMB_SIZE); |
7159 | md_number_to_chars (buf + THUMB_SIZE, newval2, THUMB_SIZE); | |
252b5132 RH |
7160 | } |
7161 | break; | |
7162 | ||
7163 | case BFD_RELOC_8: | |
7164 | if (fixP->fx_done || fixP->fx_pcrel) | |
7165 | md_number_to_chars (buf, value, 1); | |
7166 | #ifdef OBJ_ELF | |
7167 | else if (!target_oabi) | |
28e4f854 KH |
7168 | { |
7169 | value = fixP->fx_offset; | |
7170 | md_number_to_chars (buf, value, 1); | |
7171 | } | |
252b5132 RH |
7172 | #endif |
7173 | break; | |
7174 | ||
7175 | case BFD_RELOC_16: | |
7176 | if (fixP->fx_done || fixP->fx_pcrel) | |
7177 | md_number_to_chars (buf, value, 2); | |
7178 | #ifdef OBJ_ELF | |
7179 | else if (!target_oabi) | |
28e4f854 KH |
7180 | { |
7181 | value = fixP->fx_offset; | |
7182 | md_number_to_chars (buf, value, 2); | |
7183 | } | |
252b5132 RH |
7184 | #endif |
7185 | break; | |
7186 | ||
7187 | #ifdef OBJ_ELF | |
7188 | case BFD_RELOC_ARM_GOT32: | |
7189 | case BFD_RELOC_ARM_GOTOFF: | |
28e4f854 KH |
7190 | md_number_to_chars (buf, 0, 4); |
7191 | break; | |
252b5132 RH |
7192 | #endif |
7193 | ||
7194 | case BFD_RELOC_RVA: | |
7195 | case BFD_RELOC_32: | |
7196 | if (fixP->fx_done || fixP->fx_pcrel) | |
7197 | md_number_to_chars (buf, value, 4); | |
7198 | #ifdef OBJ_ELF | |
7199 | else if (!target_oabi) | |
28e4f854 KH |
7200 | { |
7201 | value = fixP->fx_offset; | |
7202 | md_number_to_chars (buf, value, 4); | |
7203 | } | |
252b5132 RH |
7204 | #endif |
7205 | break; | |
7206 | ||
7207 | #ifdef OBJ_ELF | |
7208 | case BFD_RELOC_ARM_PLT32: | |
28e4f854 | 7209 | /* It appears the instruction is fully prepared at this point. */ |
252b5132 RH |
7210 | break; |
7211 | #endif | |
7212 | ||
7213 | case BFD_RELOC_ARM_GOTPC: | |
7214 | md_number_to_chars (buf, value, 4); | |
7215 | break; | |
28e4f854 | 7216 | |
252b5132 RH |
7217 | case BFD_RELOC_ARM_CP_OFF_IMM: |
7218 | sign = value >= 0; | |
7219 | if (value < -1023 || value > 1023 || (value & 3)) | |
7220 | as_bad_where (fixP->fx_file, fixP->fx_line, | |
7221 | _("Illegal value for co-processor offset")); | |
7222 | if (value < 0) | |
7223 | value = -value; | |
7224 | newval = md_chars_to_number (buf, INSN_SIZE) & 0xff7fff00; | |
28e4f854 KH |
7225 | newval |= (value >> 2) | (sign ? INDEX_UP : 0); |
7226 | md_number_to_chars (buf, newval, INSN_SIZE); | |
252b5132 RH |
7227 | break; |
7228 | ||
7229 | case BFD_RELOC_ARM_THUMB_OFFSET: | |
7230 | newval = md_chars_to_number (buf, THUMB_SIZE); | |
28e4f854 KH |
7231 | /* Exactly what ranges, and where the offset is inserted depends |
7232 | on the type of instruction, we can establish this from the | |
7233 | top 4 bits. */ | |
252b5132 RH |
7234 | switch (newval >> 12) |
7235 | { | |
28e4f854 | 7236 | case 4: /* PC load. */ |
252b5132 RH |
7237 | /* Thumb PC loads are somewhat odd, bit 1 of the PC is |
7238 | forced to zero for these loads, so we will need to round | |
7239 | up the offset if the instruction address is not word | |
7240 | aligned (since the final address produced must be, and | |
7241 | we can only describe word-aligned immediate offsets). */ | |
7242 | ||
7243 | if ((fixP->fx_frag->fr_address + fixP->fx_where + value) & 3) | |
7244 | as_bad_where (fixP->fx_file, fixP->fx_line, | |
7245 | _("Invalid offset, target not word aligned (0x%08X)"), | |
28e4f854 KH |
7246 | (unsigned int) (fixP->fx_frag->fr_address |
7247 | + fixP->fx_where + value)); | |
252b5132 RH |
7248 | |
7249 | if ((value + 2) & ~0x3fe) | |
7250 | as_bad_where (fixP->fx_file, fixP->fx_line, | |
077b8428 | 7251 | _("Invalid offset, value too big (0x%08lX)"), value); |
252b5132 | 7252 | |
28e4f854 | 7253 | /* Round up, since pc will be rounded down. */ |
252b5132 RH |
7254 | newval |= (value + 2) >> 2; |
7255 | break; | |
7256 | ||
28e4f854 | 7257 | case 9: /* SP load/store. */ |
252b5132 RH |
7258 | if (value & ~0x3fc) |
7259 | as_bad_where (fixP->fx_file, fixP->fx_line, | |
077b8428 | 7260 | _("Invalid offset, value too big (0x%08lX)"), value); |
252b5132 RH |
7261 | newval |= value >> 2; |
7262 | break; | |
7263 | ||
28e4f854 | 7264 | case 6: /* Word load/store. */ |
252b5132 RH |
7265 | if (value & ~0x7c) |
7266 | as_bad_where (fixP->fx_file, fixP->fx_line, | |
077b8428 | 7267 | _("Invalid offset, value too big (0x%08lX)"), value); |
28e4f854 | 7268 | newval |= value << 4; /* 6 - 2. */ |
252b5132 RH |
7269 | break; |
7270 | ||
28e4f854 | 7271 | case 7: /* Byte load/store. */ |
252b5132 RH |
7272 | if (value & ~0x1f) |
7273 | as_bad_where (fixP->fx_file, fixP->fx_line, | |
077b8428 | 7274 | _("Invalid offset, value too big (0x%08lX)"), value); |
252b5132 RH |
7275 | newval |= value << 6; |
7276 | break; | |
7277 | ||
28e4f854 | 7278 | case 8: /* Halfword load/store. */ |
252b5132 RH |
7279 | if (value & ~0x3e) |
7280 | as_bad_where (fixP->fx_file, fixP->fx_line, | |
077b8428 | 7281 | _("Invalid offset, value too big (0x%08lX)"), value); |
28e4f854 | 7282 | newval |= value << 5; /* 6 - 1. */ |
252b5132 RH |
7283 | break; |
7284 | ||
7285 | default: | |
7286 | as_bad_where (fixP->fx_file, fixP->fx_line, | |
3d103319 ILT |
7287 | "Unable to process relocation for thumb opcode: %lx", |
7288 | (unsigned long) newval); | |
252b5132 RH |
7289 | break; |
7290 | } | |
7291 | md_number_to_chars (buf, newval, THUMB_SIZE); | |
7292 | break; | |
7293 | ||
7294 | case BFD_RELOC_ARM_THUMB_ADD: | |
7295 | /* This is a complicated relocation, since we use it for all of | |
7296 | the following immediate relocations: | |
28e4f854 | 7297 | |
d78c7dca NC |
7298 | 3bit ADD/SUB |
7299 | 8bit ADD/SUB | |
7300 | 9bit ADD/SUB SP word-aligned | |
28e4f854 | 7301 | 10bit ADD PC/SP word-aligned |
252b5132 RH |
7302 | |
7303 | The type of instruction being processed is encoded in the | |
7304 | instruction field: | |
28e4f854 KH |
7305 | |
7306 | 0x8000 SUB | |
7307 | 0x00F0 Rd | |
7308 | 0x000F Rs | |
252b5132 RH |
7309 | */ |
7310 | newval = md_chars_to_number (buf, THUMB_SIZE); | |
7311 | { | |
28e4f854 KH |
7312 | int rd = (newval >> 4) & 0xf; |
7313 | int rs = newval & 0xf; | |
7314 | int subtract = newval & 0x8000; | |
7315 | ||
7316 | if (rd == REG_SP) | |
7317 | { | |
7318 | if (value & ~0x1fc) | |
7319 | as_bad_where (fixP->fx_file, fixP->fx_line, | |
7320 | _("Invalid immediate for stack address calculation")); | |
7321 | newval = subtract ? T_OPCODE_SUB_ST : T_OPCODE_ADD_ST; | |
7322 | newval |= value >> 2; | |
7323 | } | |
7324 | else if (rs == REG_PC || rs == REG_SP) | |
7325 | { | |
7326 | if (subtract || | |
7327 | value & ~0x3fc) | |
7328 | as_bad_where (fixP->fx_file, fixP->fx_line, | |
7329 | _("Invalid immediate for address calculation (value = 0x%08lX)"), | |
3d103319 | 7330 | (unsigned long) value); |
28e4f854 KH |
7331 | newval = (rs == REG_PC ? T_OPCODE_ADD_PC : T_OPCODE_ADD_SP); |
7332 | newval |= rd << 8; | |
7333 | newval |= value >> 2; | |
7334 | } | |
7335 | else if (rs == rd) | |
7336 | { | |
7337 | if (value & ~0xff) | |
7338 | as_bad_where (fixP->fx_file, fixP->fx_line, | |
7339 | _("Invalid 8bit immediate")); | |
7340 | newval = subtract ? T_OPCODE_SUB_I8 : T_OPCODE_ADD_I8; | |
7341 | newval |= (rd << 8) | value; | |
7342 | } | |
7343 | else | |
7344 | { | |
7345 | if (value & ~0x7) | |
7346 | as_bad_where (fixP->fx_file, fixP->fx_line, | |
7347 | _("Invalid 3bit immediate")); | |
7348 | newval = subtract ? T_OPCODE_SUB_I3 : T_OPCODE_ADD_I3; | |
7349 | newval |= rd | (rs << 3) | (value << 6); | |
7350 | } | |
252b5132 | 7351 | } |
28e4f854 | 7352 | md_number_to_chars (buf, newval, THUMB_SIZE); |
252b5132 RH |
7353 | break; |
7354 | ||
7355 | case BFD_RELOC_ARM_THUMB_IMM: | |
7356 | newval = md_chars_to_number (buf, THUMB_SIZE); | |
7357 | switch (newval >> 11) | |
28e4f854 KH |
7358 | { |
7359 | case 0x04: /* 8bit immediate MOV. */ | |
7360 | case 0x05: /* 8bit immediate CMP. */ | |
7361 | if (value < 0 || value > 255) | |
7362 | as_bad_where (fixP->fx_file, fixP->fx_line, | |
7363 | _("Invalid immediate: %ld is too large"), | |
3d103319 | 7364 | (long) value); |
28e4f854 KH |
7365 | newval |= value; |
7366 | break; | |
252b5132 | 7367 | |
28e4f854 KH |
7368 | default: |
7369 | abort (); | |
7370 | } | |
7371 | md_number_to_chars (buf, newval, THUMB_SIZE); | |
252b5132 RH |
7372 | break; |
7373 | ||
7374 | case BFD_RELOC_ARM_THUMB_SHIFT: | |
28e4f854 | 7375 | /* 5bit shift value (0..31). */ |
252b5132 RH |
7376 | if (value < 0 || value > 31) |
7377 | as_bad_where (fixP->fx_file, fixP->fx_line, | |
3d103319 | 7378 | _("Illegal Thumb shift value: %ld"), (long) value); |
252b5132 RH |
7379 | newval = md_chars_to_number (buf, THUMB_SIZE) & 0xf03f; |
7380 | newval |= value << 6; | |
28e4f854 | 7381 | md_number_to_chars (buf, newval, THUMB_SIZE); |
252b5132 RH |
7382 | break; |
7383 | ||
7384 | case BFD_RELOC_VTABLE_INHERIT: | |
7385 | case BFD_RELOC_VTABLE_ENTRY: | |
7386 | fixP->fx_done = 0; | |
7387 | return 1; | |
7388 | ||
7389 | case BFD_RELOC_NONE: | |
7390 | default: | |
7391 | as_bad_where (fixP->fx_file, fixP->fx_line, | |
11450271 | 7392 | _("Bad relocation fixup type (%d)"), fixP->fx_r_type); |
252b5132 RH |
7393 | } |
7394 | ||
7395 | return 1; | |
7396 | } | |
7397 | ||
7398 | /* Translate internal representation of relocation info to BFD target | |
7399 | format. */ | |
28e4f854 | 7400 | |
252b5132 RH |
7401 | arelent * |
7402 | tc_gen_reloc (section, fixp) | |
d78c7dca NC |
7403 | asection * section ATTRIBUTE_UNUSED; |
7404 | fixS * fixp; | |
252b5132 | 7405 | { |
d78c7dca | 7406 | arelent * reloc; |
252b5132 RH |
7407 | bfd_reloc_code_real_type code; |
7408 | ||
7409 | reloc = (arelent *) xmalloc (sizeof (arelent)); | |
7410 | ||
174419c1 ILT |
7411 | reloc->sym_ptr_ptr = (asymbol **) xmalloc (sizeof (asymbol *)); |
7412 | *reloc->sym_ptr_ptr = symbol_get_bfdsym (fixp->fx_addsy); | |
252b5132 RH |
7413 | reloc->address = fixp->fx_frag->fr_address + fixp->fx_where; |
7414 | ||
7415 | /* @@ Why fx_addnumber sometimes and fx_offset other times? */ | |
7416 | #ifndef OBJ_ELF | |
7417 | if (fixp->fx_pcrel == 0) | |
7418 | reloc->addend = fixp->fx_offset; | |
7419 | else | |
7420 | reloc->addend = fixp->fx_offset = reloc->address; | |
7421 | #else /* OBJ_ELF */ | |
7422 | reloc->addend = fixp->fx_offset; | |
7423 | #endif | |
7424 | ||
7425 | switch (fixp->fx_r_type) | |
7426 | { | |
7427 | case BFD_RELOC_8: | |
7428 | if (fixp->fx_pcrel) | |
7429 | { | |
7430 | code = BFD_RELOC_8_PCREL; | |
7431 | break; | |
7432 | } | |
7433 | ||
7434 | case BFD_RELOC_16: | |
7435 | if (fixp->fx_pcrel) | |
7436 | { | |
7437 | code = BFD_RELOC_16_PCREL; | |
7438 | break; | |
7439 | } | |
7440 | ||
7441 | case BFD_RELOC_32: | |
7442 | if (fixp->fx_pcrel) | |
7443 | { | |
7444 | code = BFD_RELOC_32_PCREL; | |
7445 | break; | |
7446 | } | |
7447 | ||
7448 | case BFD_RELOC_ARM_PCREL_BRANCH: | |
d92b1a8a | 7449 | case BFD_RELOC_ARM_PCREL_BLX: |
28e4f854 | 7450 | case BFD_RELOC_RVA: |
252b5132 RH |
7451 | case BFD_RELOC_THUMB_PCREL_BRANCH9: |
7452 | case BFD_RELOC_THUMB_PCREL_BRANCH12: | |
7453 | case BFD_RELOC_THUMB_PCREL_BRANCH23: | |
d92b1a8a | 7454 | case BFD_RELOC_THUMB_PCREL_BLX: |
252b5132 RH |
7455 | case BFD_RELOC_VTABLE_ENTRY: |
7456 | case BFD_RELOC_VTABLE_INHERIT: | |
7457 | code = fixp->fx_r_type; | |
7458 | break; | |
7459 | ||
7460 | case BFD_RELOC_ARM_LITERAL: | |
7461 | case BFD_RELOC_ARM_HWLITERAL: | |
7462 | /* If this is called then the a literal has been referenced across | |
28e4f854 | 7463 | a section boundary - possibly due to an implicit dump. */ |
252b5132 | 7464 | as_bad_where (fixp->fx_file, fixp->fx_line, |
2f992c04 | 7465 | _("Literal referenced across section boundary (Implicit dump?)")); |
252b5132 RH |
7466 | return NULL; |
7467 | ||
252b5132 RH |
7468 | #ifdef OBJ_ELF |
7469 | case BFD_RELOC_ARM_GOT32: | |
7470 | case BFD_RELOC_ARM_GOTOFF: | |
7471 | case BFD_RELOC_ARM_PLT32: | |
28e4f854 KH |
7472 | code = fixp->fx_r_type; |
7473 | break; | |
252b5132 RH |
7474 | #endif |
7475 | ||
7476 | case BFD_RELOC_ARM_IMMEDIATE: | |
7477 | as_bad_where (fixp->fx_file, fixp->fx_line, | |
7478 | _("Internal_relocation (type %d) not fixed up (IMMEDIATE)"), | |
7479 | fixp->fx_r_type); | |
7480 | return NULL; | |
7481 | ||
49a5575c NC |
7482 | case BFD_RELOC_ARM_ADRL_IMMEDIATE: |
7483 | as_bad_where (fixp->fx_file, fixp->fx_line, | |
077b8428 | 7484 | _("ADRL used for a symbol not defined in the same file")); |
49a5575c NC |
7485 | return NULL; |
7486 | ||
252b5132 RH |
7487 | case BFD_RELOC_ARM_OFFSET_IMM: |
7488 | as_bad_where (fixp->fx_file, fixp->fx_line, | |
7489 | _("Internal_relocation (type %d) not fixed up (OFFSET_IMM)"), | |
7490 | fixp->fx_r_type); | |
7491 | return NULL; | |
7492 | ||
7493 | default: | |
7494 | { | |
d78c7dca NC |
7495 | char * type; |
7496 | ||
252b5132 RH |
7497 | switch (fixp->fx_r_type) |
7498 | { | |
7499 | case BFD_RELOC_ARM_IMMEDIATE: type = "IMMEDIATE"; break; | |
7500 | case BFD_RELOC_ARM_OFFSET_IMM: type = "OFFSET_IMM"; break; | |
7501 | case BFD_RELOC_ARM_OFFSET_IMM8: type = "OFFSET_IMM8"; break; | |
7502 | case BFD_RELOC_ARM_SHIFT_IMM: type = "SHIFT_IMM"; break; | |
7503 | case BFD_RELOC_ARM_SWI: type = "SWI"; break; | |
7504 | case BFD_RELOC_ARM_MULTI: type = "MULTI"; break; | |
7505 | case BFD_RELOC_ARM_CP_OFF_IMM: type = "CP_OFF_IMM"; break; | |
7506 | case BFD_RELOC_ARM_THUMB_ADD: type = "THUMB_ADD"; break; | |
7507 | case BFD_RELOC_ARM_THUMB_SHIFT: type = "THUMB_SHIFT"; break; | |
7508 | case BFD_RELOC_ARM_THUMB_IMM: type = "THUMB_IMM"; break; | |
7509 | case BFD_RELOC_ARM_THUMB_OFFSET: type = "THUMB_OFFSET"; break; | |
ae5ad4ad | 7510 | default: type = _("<unknown>"); break; |
252b5132 RH |
7511 | } |
7512 | as_bad_where (fixp->fx_file, fixp->fx_line, | |
8179bd9b NC |
7513 | _("Cannot represent %s relocation in this object file format"), |
7514 | type); | |
252b5132 RH |
7515 | return NULL; |
7516 | } | |
7517 | } | |
7518 | ||
7519 | #ifdef OBJ_ELF | |
28e4f854 KH |
7520 | if (code == BFD_RELOC_32_PCREL |
7521 | && GOT_symbol | |
7522 | && fixp->fx_addsy == GOT_symbol) | |
7523 | { | |
7524 | code = BFD_RELOC_ARM_GOTPC; | |
7525 | reloc->addend = fixp->fx_offset = reloc->address; | |
7526 | } | |
252b5132 | 7527 | #endif |
28e4f854 | 7528 | |
252b5132 RH |
7529 | reloc->howto = bfd_reloc_type_lookup (stdoutput, code); |
7530 | ||
7531 | if (reloc->howto == NULL) | |
7532 | { | |
7533 | as_bad_where (fixp->fx_file, fixp->fx_line, | |
7534 | _("Can not represent %s relocation in this object file format"), | |
7535 | bfd_get_reloc_code_name (code)); | |
7536 | return NULL; | |
7537 | } | |
7538 | ||
28e4f854 KH |
7539 | /* HACK: Since arm ELF uses Rel instead of Rela, encode the |
7540 | vtable entry to be used in the relocation's section offset. */ | |
7541 | if (fixp->fx_r_type == BFD_RELOC_VTABLE_ENTRY) | |
7542 | reloc->address = fixp->fx_offset; | |
c8d259f7 | 7543 | |
252b5132 RH |
7544 | return reloc; |
7545 | } | |
7546 | ||
7547 | int | |
7548 | md_estimate_size_before_relax (fragP, segtype) | |
d78c7dca NC |
7549 | fragS * fragP ATTRIBUTE_UNUSED; |
7550 | segT segtype ATTRIBUTE_UNUSED; | |
252b5132 RH |
7551 | { |
7552 | as_fatal (_("md_estimate_size_before_relax\n")); | |
7553 | return 1; | |
7554 | } | |
7555 | ||
7556 | static void | |
49a5575c | 7557 | output_inst PARAMS ((void)) |
252b5132 | 7558 | { |
d78c7dca | 7559 | char * to = NULL; |
28e4f854 | 7560 | |
252b5132 RH |
7561 | if (inst.error) |
7562 | { | |
7563 | as_bad (inst.error); | |
7564 | return; | |
7565 | } | |
7566 | ||
7567 | to = frag_more (inst.size); | |
28e4f854 | 7568 | |
252b5132 RH |
7569 | if (thumb_mode && (inst.size > THUMB_SIZE)) |
7570 | { | |
7571 | assert (inst.size == (2 * THUMB_SIZE)); | |
7572 | md_number_to_chars (to, inst.instruction >> 16, THUMB_SIZE); | |
49a5575c NC |
7573 | md_number_to_chars (to + THUMB_SIZE, inst.instruction, THUMB_SIZE); |
7574 | } | |
7575 | else if (inst.size > INSN_SIZE) | |
7576 | { | |
7577 | assert (inst.size == (2 * INSN_SIZE)); | |
7578 | md_number_to_chars (to, inst.instruction, INSN_SIZE); | |
7579 | md_number_to_chars (to + INSN_SIZE, inst.instruction, INSN_SIZE); | |
252b5132 RH |
7580 | } |
7581 | else | |
7582 | md_number_to_chars (to, inst.instruction, inst.size); | |
7583 | ||
7584 | if (inst.reloc.type != BFD_RELOC_NONE) | |
7585 | fix_new_arm (frag_now, to - frag_now->fr_literal, | |
d78c7dca | 7586 | inst.size, & inst.reloc.exp, inst.reloc.pc_rel, |
252b5132 | 7587 | inst.reloc.type); |
4dc7ead9 | 7588 | |
85a39694 | 7589 | #ifdef OBJ_ELF |
4dc7ead9 | 7590 | dwarf2_emit_insn (inst.size); |
85a39694 | 7591 | #endif |
252b5132 RH |
7592 | } |
7593 | ||
7594 | void | |
7595 | md_assemble (str) | |
d78c7dca | 7596 | char * str; |
252b5132 | 7597 | { |
d78c7dca NC |
7598 | char c; |
7599 | char * p; | |
7600 | char * q; | |
7601 | char * start; | |
252b5132 RH |
7602 | |
7603 | /* Align the instruction. | |
d78c7dca | 7604 | This may not be the right thing to do but ... */ |
28e4f854 KH |
7605 | #if 0 |
7606 | arm_align (2, 0); | |
7607 | #endif | |
7608 | listing_prev_line (); /* Defined in listing.h. */ | |
252b5132 RH |
7609 | |
7610 | /* Align the previous label if needed. */ | |
7611 | if (last_label_seen != NULL) | |
7612 | { | |
174419c1 | 7613 | symbol_set_frag (last_label_seen, frag_now); |
252b5132 RH |
7614 | S_SET_VALUE (last_label_seen, (valueT) frag_now_fix ()); |
7615 | S_SET_SEGMENT (last_label_seen, now_seg); | |
7616 | } | |
7617 | ||
7618 | memset (&inst, '\0', sizeof (inst)); | |
7619 | inst.reloc.type = BFD_RELOC_NONE; | |
7620 | ||
ae5ad4ad | 7621 | skip_whitespace (str); |
28e4f854 | 7622 | |
252b5132 RH |
7623 | /* Scan up to the end of the op-code, which must end in white space or |
7624 | end of string. */ | |
7625 | for (start = p = str; *p != '\0'; p++) | |
7626 | if (*p == ' ') | |
7627 | break; | |
28e4f854 | 7628 | |
252b5132 RH |
7629 | if (p == str) |
7630 | { | |
7631 | as_bad (_("No operator -- statement `%s'\n"), str); | |
7632 | return; | |
7633 | } | |
7634 | ||
7635 | if (thumb_mode) | |
7636 | { | |
d78c7dca | 7637 | CONST struct thumb_opcode * opcode; |
252b5132 RH |
7638 | |
7639 | c = *p; | |
7640 | *p = '\0'; | |
7641 | opcode = (CONST struct thumb_opcode *) hash_find (arm_tops_hsh, str); | |
7642 | *p = c; | |
28e4f854 | 7643 | |
252b5132 RH |
7644 | if (opcode) |
7645 | { | |
92a66162 | 7646 | /* Check that this instruction is supported for this CPU. */ |
a64bcdd8 | 7647 | if (thumb_mode == 1 && (opcode->variants & cpu_variant) == 0) |
28e4f854 KH |
7648 | { |
7649 | as_bad (_("selected processor does not support this opcode")); | |
7650 | return; | |
7651 | } | |
92a66162 | 7652 | |
252b5132 RH |
7653 | inst.instruction = opcode->value; |
7654 | inst.size = opcode->size; | |
28e4f854 | 7655 | (*opcode->parms) (p); |
49a5575c | 7656 | output_inst (); |
252b5132 RH |
7657 | return; |
7658 | } | |
7659 | } | |
7660 | else | |
7661 | { | |
d78c7dca | 7662 | CONST struct asm_opcode * opcode; |
92a66162 | 7663 | unsigned long cond_code; |
252b5132 RH |
7664 | |
7665 | inst.size = INSN_SIZE; | |
28e4f854 | 7666 | /* P now points to the end of the opcode, probably white space, but we |
252b5132 RH |
7667 | have to break the opcode up in case it contains condionals and flags; |
7668 | keep trying with progressively smaller basic instructions until one | |
ae5ad4ad | 7669 | matches, or we run out of opcode. */ |
252b5132 | 7670 | q = (p - str > LONGEST_INST) ? str + LONGEST_INST : p; |
d92b1a8a | 7671 | |
252b5132 RH |
7672 | for (; q != str; q--) |
7673 | { | |
7674 | c = *q; | |
7675 | *q = '\0'; | |
d92b1a8a | 7676 | |
252b5132 RH |
7677 | opcode = (CONST struct asm_opcode *) hash_find (arm_ops_hsh, str); |
7678 | *q = c; | |
28e4f854 | 7679 | |
252b5132 RH |
7680 | if (opcode && opcode->template) |
7681 | { | |
7682 | unsigned long flag_bits = 0; | |
d78c7dca | 7683 | char * r; |
252b5132 | 7684 | |
ae5ad4ad | 7685 | /* Check that this instruction is supported for this CPU. */ |
252b5132 RH |
7686 | if ((opcode->variants & cpu_variant) == 0) |
7687 | goto try_shorter; | |
7688 | ||
7689 | inst.instruction = opcode->value; | |
ae5ad4ad | 7690 | if (q == p) /* Just a simple opcode. */ |
252b5132 | 7691 | { |
92a66162 DL |
7692 | if (opcode->comp_suffix) |
7693 | { | |
28e4f854 KH |
7694 | if (*opcode->comp_suffix != '\0') |
7695 | as_bad (_("Opcode `%s' must have suffix from list: <%s>"), | |
7696 | str, opcode->comp_suffix); | |
7697 | else | |
7698 | /* Not a conditional instruction. */ | |
7699 | (*opcode->parms) (q, 0); | |
92a66162 | 7700 | } |
252b5132 RH |
7701 | else |
7702 | { | |
28e4f854 | 7703 | /* A conditional instruction with default condition. */ |
252b5132 | 7704 | inst.instruction |= COND_ALWAYS; |
28e4f854 | 7705 | (*opcode->parms) (q, 0); |
252b5132 | 7706 | } |
49a5575c | 7707 | output_inst (); |
252b5132 RH |
7708 | return; |
7709 | } | |
7710 | ||
28e4f854 KH |
7711 | /* Not just a simple opcode. Check if extra is a |
7712 | conditional. */ | |
252b5132 RH |
7713 | r = q; |
7714 | if (p - r >= 2) | |
7715 | { | |
7716 | CONST struct asm_cond *cond; | |
7717 | char d = *(r + 2); | |
7718 | ||
7719 | *(r + 2) = '\0'; | |
7720 | cond = (CONST struct asm_cond *) hash_find (arm_cond_hsh, r); | |
7721 | *(r + 2) = d; | |
7722 | if (cond) | |
7723 | { | |
7724 | if (cond->value == 0xf0000000) | |
d78c7dca NC |
7725 | as_tsktsk ( |
7726 | _("Warning: Use of the 'nv' conditional is deprecated\n")); | |
252b5132 | 7727 | |
92a66162 | 7728 | cond_code = cond->value; |
252b5132 RH |
7729 | r += 2; |
7730 | } | |
7731 | else | |
92a66162 | 7732 | cond_code = COND_ALWAYS; |
252b5132 RH |
7733 | } |
7734 | else | |
92a66162 DL |
7735 | cond_code = COND_ALWAYS; |
7736 | ||
28e4f854 | 7737 | /* Apply the conditional, or complain it's not allowed. */ |
92a66162 DL |
7738 | if (opcode->comp_suffix && *opcode->comp_suffix == '\0') |
7739 | { | |
28e4f854 KH |
7740 | /* Instruction isn't conditional. */ |
7741 | if (cond_code != COND_ALWAYS) | |
7742 | { | |
7743 | as_bad (_("Opcode `%s' is unconditional\n"), str); | |
7744 | return; | |
7745 | } | |
92a66162 DL |
7746 | } |
7747 | else | |
28e4f854 KH |
7748 | /* Instruction is conditional: set the condition into it. */ |
7749 | inst.instruction |= cond_code; | |
92a66162 | 7750 | |
28e4f854 KH |
7751 | /* If there is a compulsory suffix, it should come here |
7752 | before any optional flags. */ | |
92a66162 | 7753 | if (opcode->comp_suffix && *opcode->comp_suffix != '\0') |
252b5132 RH |
7754 | { |
7755 | CONST char *s = opcode->comp_suffix; | |
7756 | ||
7757 | while (*s) | |
7758 | { | |
7759 | inst.suffix++; | |
7760 | if (*r == *s) | |
7761 | break; | |
7762 | s++; | |
7763 | } | |
7764 | ||
7765 | if (*s == '\0') | |
7766 | { | |
28e4f854 KH |
7767 | as_bad (_("Opcode `%s' must have suffix from <%s>\n"), |
7768 | str, opcode->comp_suffix); | |
252b5132 RH |
7769 | return; |
7770 | } | |
7771 | ||
7772 | r++; | |
7773 | } | |
7774 | ||
7775 | /* The remainder, if any should now be flags for the instruction; | |
7776 | Scan these checking each one found with the opcode. */ | |
7777 | if (r != p) | |
7778 | { | |
7779 | char d; | |
7780 | CONST struct asm_flg *flag = opcode->flags; | |
7781 | ||
7782 | if (flag) | |
7783 | { | |
7784 | int flagno; | |
7785 | ||
7786 | d = *p; | |
7787 | *p = '\0'; | |
7788 | ||
7789 | for (flagno = 0; flag[flagno].template; flagno++) | |
7790 | { | |
7791 | if (streq (r, flag[flagno].template)) | |
7792 | { | |
7793 | flag_bits |= flag[flagno].set_bits; | |
7794 | break; | |
7795 | } | |
7796 | } | |
7797 | ||
7798 | *p = d; | |
7799 | if (! flag[flagno].template) | |
7800 | goto try_shorter; | |
7801 | } | |
7802 | else | |
7803 | goto try_shorter; | |
7804 | } | |
7805 | ||
7806 | (*opcode->parms) (p, flag_bits); | |
49a5575c | 7807 | output_inst (); |
252b5132 RH |
7808 | return; |
7809 | } | |
7810 | ||
7811 | try_shorter: | |
7812 | ; | |
7813 | } | |
7814 | } | |
7815 | ||
7816 | /* It wasn't an instruction, but it might be a register alias of the form | |
28e4f854 | 7817 | alias .req reg. */ |
252b5132 | 7818 | q = p; |
ae5ad4ad | 7819 | skip_whitespace (q); |
252b5132 RH |
7820 | |
7821 | c = *p; | |
7822 | *p = '\0'; | |
28e4f854 | 7823 | |
252b5132 RH |
7824 | if (*q && !strncmp (q, ".req ", 4)) |
7825 | { | |
d78c7dca | 7826 | int reg; |
37d8bb27 | 7827 | char * copy_of_str; |
d78c7dca | 7828 | char * r; |
28e4f854 | 7829 | |
37d8bb27 NC |
7830 | #ifdef IGNORE_OPCODE_CASE |
7831 | str = original_case_string; | |
7832 | #endif | |
7833 | copy_of_str = str; | |
4a1805b1 | 7834 | |
252b5132 | 7835 | q += 4; |
ae5ad4ad | 7836 | skip_whitespace (q); |
252b5132 RH |
7837 | |
7838 | for (r = q; *r != '\0'; r++) | |
7839 | if (*r == ' ') | |
7840 | break; | |
28e4f854 | 7841 | |
252b5132 RH |
7842 | if (r != q) |
7843 | { | |
7844 | int regnum; | |
7845 | char d = *r; | |
7846 | ||
7847 | *r = '\0'; | |
d78c7dca | 7848 | regnum = arm_reg_parse (& q); |
252b5132 RH |
7849 | *r = d; |
7850 | ||
d78c7dca | 7851 | reg = arm_reg_parse (& str); |
28e4f854 | 7852 | |
252b5132 RH |
7853 | if (reg == FAIL) |
7854 | { | |
7855 | if (regnum != FAIL) | |
11450271 | 7856 | insert_reg_alias (str, regnum); |
252b5132 | 7857 | else |
92a66162 | 7858 | as_warn (_("register '%s' does not exist\n"), q); |
252b5132 RH |
7859 | } |
7860 | else if (regnum != FAIL) | |
7861 | { | |
7862 | if (reg != regnum) | |
ec9991dc | 7863 | as_warn (_("ignoring redefinition of register alias '%s'"), |
28e4f854 KH |
7864 | copy_of_str); |
7865 | ||
ae5ad4ad | 7866 | /* Do not warn about redefinitions to the same alias. */ |
252b5132 RH |
7867 | } |
7868 | else | |
7869 | as_warn (_("ignoring redefinition of register alias '%s' to non-existant register '%s'"), | |
7870 | copy_of_str, q); | |
7871 | } | |
7872 | else | |
7873 | as_warn (_("ignoring incomplete .req pseuso op")); | |
28e4f854 | 7874 | |
252b5132 RH |
7875 | *p = c; |
7876 | return; | |
7877 | } | |
7878 | ||
7879 | *p = c; | |
7880 | as_bad (_("bad instruction `%s'"), start); | |
7881 | } | |
7882 | ||
28e4f854 | 7883 | /* md_parse_option |
d78c7dca NC |
7884 | Invocation line includes a switch not recognized by the base assembler. |
7885 | See if it's a processor-specific option. These are: | |
7886 | Cpu variants, the arm part is optional: | |
7887 | -m[arm]1 Currently not supported. | |
7888 | -m[arm]2, -m[arm]250 Arm 2 and Arm 250 processor | |
7889 | -m[arm]3 Arm 3 processor | |
7890 | -m[arm]6[xx], Arm 6 processors | |
7891 | -m[arm]7[xx][t][[d]m] Arm 7 processors | |
7892 | -m[arm]8[10] Arm 8 processors | |
7893 | -m[arm]9[20][tdmi] Arm 9 processors | |
7894 | -mstrongarm[110[0]] StrongARM processors | |
077b8428 NC |
7895 | -mxscale XScale processors |
7896 | -m[arm]v[2345[t[e]]] Arm architectures | |
d78c7dca NC |
7897 | -mall All (except the ARM1) |
7898 | FP variants: | |
7899 | -mfpa10, -mfpa11 FPA10 and 11 co-processor instructions | |
7900 | -mfpe-old (No float load/store multiples) | |
7901 | -mno-fpu Disable all floating point instructions | |
7902 | Run-time endian selection: | |
7903 | -EB big endian cpu | |
7904 | -EL little endian cpu | |
7905 | ARM Procedure Calling Standard: | |
7906 | -mapcs-32 32 bit APCS | |
7907 | -mapcs-26 26 bit APCS | |
7908 | -mapcs-float Pass floats in float regs | |
7909 | -mapcs-reentrant Position independent code | |
7910 | -mthumb-interwork Code supports Arm/Thumb interworking | |
077b8428 | 7911 | -matpcs ARM/Thumb Procedure Call Standard |
d78c7dca NC |
7912 | -moabi Old ELF ABI */ |
7913 | ||
7914 | CONST char * md_shortopts = "m:k"; | |
28e4f854 | 7915 | |
252b5132 RH |
7916 | struct option md_longopts[] = |
7917 | { | |
7918 | #ifdef ARM_BI_ENDIAN | |
7919 | #define OPTION_EB (OPTION_MD_BASE + 0) | |
7920 | {"EB", no_argument, NULL, OPTION_EB}, | |
7921 | #define OPTION_EL (OPTION_MD_BASE + 1) | |
7922 | {"EL", no_argument, NULL, OPTION_EL}, | |
7923 | #ifdef OBJ_ELF | |
7924 | #define OPTION_OABI (OPTION_MD_BASE +2) | |
7925 | {"oabi", no_argument, NULL, OPTION_OABI}, | |
7926 | #endif | |
7927 | #endif | |
7928 | {NULL, no_argument, NULL, 0} | |
7929 | }; | |
28e4f854 | 7930 | |
252b5132 RH |
7931 | size_t md_longopts_size = sizeof (md_longopts); |
7932 | ||
7933 | int | |
7934 | md_parse_option (c, arg) | |
d78c7dca NC |
7935 | int c; |
7936 | char * arg; | |
252b5132 | 7937 | { |
d78c7dca | 7938 | char * str = arg; |
252b5132 RH |
7939 | |
7940 | switch (c) | |
7941 | { | |
7942 | #ifdef ARM_BI_ENDIAN | |
7943 | case OPTION_EB: | |
7944 | target_big_endian = 1; | |
7945 | break; | |
7946 | case OPTION_EL: | |
7947 | target_big_endian = 0; | |
7948 | break; | |
7949 | #endif | |
7950 | ||
7951 | case 'm': | |
7952 | switch (*str) | |
7953 | { | |
7954 | case 'f': | |
7955 | if (streq (str, "fpa10")) | |
7956 | cpu_variant = (cpu_variant & ~FPU_ALL) | FPU_FPA10; | |
7957 | else if (streq (str, "fpa11")) | |
7958 | cpu_variant = (cpu_variant & ~FPU_ALL) | FPU_FPA11; | |
7959 | else if (streq (str, "fpe-old")) | |
7960 | cpu_variant = (cpu_variant & ~FPU_ALL) | FPU_CORE; | |
7961 | else | |
7962 | goto bad; | |
7963 | break; | |
7964 | ||
7965 | case 'n': | |
7966 | if (streq (str, "no-fpu")) | |
7967 | cpu_variant &= ~FPU_ALL; | |
7968 | break; | |
7969 | ||
7970 | #ifdef OBJ_ELF | |
28e4f854 KH |
7971 | case 'o': |
7972 | if (streq (str, "oabi")) | |
7973 | target_oabi = true; | |
7974 | break; | |
252b5132 | 7975 | #endif |
28e4f854 KH |
7976 | |
7977 | case 't': | |
7978 | /* Limit assembler to generating only Thumb instructions: */ | |
7979 | if (streq (str, "thumb")) | |
7980 | { | |
077b8428 | 7981 | cpu_variant = (cpu_variant & ~ARM_ANY) | ARM_EXT_THUMB; |
28e4f854 KH |
7982 | cpu_variant = (cpu_variant & ~FPU_ALL) | FPU_NONE; |
7983 | thumb_mode = 1; | |
7984 | } | |
7985 | else if (streq (str, "thumb-interwork")) | |
7986 | { | |
077b8428 | 7987 | if ((cpu_variant & ARM_EXT_THUMB) == 0) |
858f4ff6 | 7988 | cpu_variant = (cpu_variant & ~ARM_ANY) | ARM_ARCH_V4T; |
252b5132 | 7989 | #if defined OBJ_COFF || defined OBJ_ELF |
28e4f854 | 7990 | support_interwork = true; |
252b5132 | 7991 | #endif |
28e4f854 KH |
7992 | } |
7993 | else | |
252b5132 | 7994 | goto bad; |
28e4f854 | 7995 | break; |
252b5132 RH |
7996 | |
7997 | default: | |
7998 | if (streq (str, "all")) | |
7999 | { | |
8000 | cpu_variant = ARM_ALL | FPU_ALL; | |
8001 | return 1; | |
8002 | } | |
8003 | #if defined OBJ_COFF || defined OBJ_ELF | |
8004 | if (! strncmp (str, "apcs-", 5)) | |
8005 | { | |
8006 | /* GCC passes on all command line options starting "-mapcs-..." | |
8007 | to us, so we must parse them here. */ | |
8008 | ||
8009 | str += 5; | |
28e4f854 | 8010 | |
252b5132 RH |
8011 | if (streq (str, "32")) |
8012 | { | |
8013 | uses_apcs_26 = false; | |
8014 | return 1; | |
8015 | } | |
8016 | else if (streq (str, "26")) | |
8017 | { | |
8018 | uses_apcs_26 = true; | |
8019 | return 1; | |
8020 | } | |
8021 | else if (streq (str, "frame")) | |
8022 | { | |
8023 | /* Stack frames are being generated - does not affect | |
8024 | linkage of code. */ | |
8025 | return 1; | |
8026 | } | |
8027 | else if (streq (str, "stack-check")) | |
8028 | { | |
8029 | /* Stack checking is being performed - does not affect | |
8030 | linkage, but does require that the functions | |
8031 | __rt_stkovf_split_small and __rt_stkovf_split_big be | |
8032 | present in the final link. */ | |
8033 | ||
8034 | return 1; | |
8035 | } | |
8036 | else if (streq (str, "float")) | |
8037 | { | |
8038 | /* Floating point arguments are being passed in the floating | |
8039 | point registers. This does affect linking, since this | |
8040 | version of the APCS is incompatible with the version that | |
8041 | passes floating points in the integer registers. */ | |
8042 | ||
8043 | uses_apcs_float = true; | |
8044 | return 1; | |
8045 | } | |
8046 | else if (streq (str, "reentrant")) | |
8047 | { | |
8048 | /* Reentrant code has been generated. This does affect | |
8049 | linking, since there is no point in linking reentrant/ | |
28e4f854 | 8050 | position independent code with absolute position code. */ |
252b5132 RH |
8051 | pic_code = true; |
8052 | return 1; | |
8053 | } | |
28e4f854 | 8054 | |
252b5132 RH |
8055 | as_bad (_("Unrecognised APCS switch -m%s"), arg); |
8056 | return 0; | |
28e4f854 | 8057 | } |
077b8428 NC |
8058 | |
8059 | if (! strcmp (str, "atpcs")) | |
8060 | { | |
8061 | atpcs = true; | |
8062 | return 1; | |
8063 | } | |
252b5132 | 8064 | #endif |
28e4f854 | 8065 | /* Strip off optional "arm". */ |
252b5132 RH |
8066 | if (! strncmp (str, "arm", 3)) |
8067 | str += 3; | |
8068 | ||
8069 | switch (*str) | |
8070 | { | |
8071 | case '1': | |
8072 | if (streq (str, "1")) | |
8073 | cpu_variant = (cpu_variant & ~ARM_ANY) | ARM_1; | |
8074 | else | |
8075 | goto bad; | |
8076 | break; | |
8077 | ||
8078 | case '2': | |
8079 | if (streq (str, "2")) | |
8080 | cpu_variant = (cpu_variant & ~ARM_ANY) | ARM_2; | |
8081 | else if (streq (str, "250")) | |
8082 | cpu_variant = (cpu_variant & ~ARM_ANY) | ARM_250; | |
8083 | else | |
8084 | goto bad; | |
8085 | break; | |
8086 | ||
8087 | case '3': | |
8088 | if (streq (str, "3")) | |
8089 | cpu_variant = (cpu_variant & ~ARM_ANY) | ARM_3; | |
8090 | else | |
8091 | goto bad; | |
8092 | break; | |
8093 | ||
8094 | case '6': | |
8095 | switch (strtol (str, NULL, 10)) | |
8096 | { | |
8097 | case 6: | |
8098 | case 60: | |
8099 | case 600: | |
8100 | case 610: | |
8101 | case 620: | |
8102 | cpu_variant = (cpu_variant & ~ARM_ANY) | ARM_6; | |
8103 | break; | |
8104 | default: | |
8105 | goto bad; | |
8106 | } | |
8107 | break; | |
8108 | ||
8109 | case '7': | |
28e4f854 | 8110 | /* Eat the processor name. */ |
d78c7dca | 8111 | switch (strtol (str, & str, 10)) |
252b5132 RH |
8112 | { |
8113 | case 7: | |
8114 | case 70: | |
8115 | case 700: | |
8116 | case 710: | |
b4d0b2b3 | 8117 | case 720: |
252b5132 RH |
8118 | case 7100: |
8119 | case 7500: | |
8120 | break; | |
8121 | default: | |
8122 | goto bad; | |
8123 | } | |
28e4f854 KH |
8124 | cpu_variant = (cpu_variant & ~ARM_ANY) | ARM_7; |
8125 | for (; *str; str++) | |
8126 | { | |
8127 | switch (*str) | |
8128 | { | |
8129 | case 't': | |
077b8428 | 8130 | cpu_variant |= ARM_ARCH_V4T; |
28e4f854 KH |
8131 | break; |
8132 | ||
8133 | case 'm': | |
077b8428 | 8134 | cpu_variant |= ARM_EXT_LONGMUL; |
28e4f854 KH |
8135 | break; |
8136 | ||
8137 | case 'f': /* fe => fp enabled cpu. */ | |
8138 | if (str[1] == 'e') | |
8139 | ++ str; | |
8140 | else | |
8141 | goto bad; | |
8142 | ||
8143 | case 'c': /* Left over from 710c processor name. */ | |
8144 | case 'd': /* Debug. */ | |
8145 | case 'i': /* Embedded ICE. */ | |
8146 | /* Included for completeness in ARM processor naming. */ | |
8147 | break; | |
8148 | ||
8149 | default: | |
252b5132 | 8150 | goto bad; |
28e4f854 KH |
8151 | } |
8152 | } | |
252b5132 RH |
8153 | break; |
8154 | ||
8155 | case '8': | |
8156 | if (streq (str, "8") || streq (str, "810")) | |
ec9991dc | 8157 | cpu_variant = (cpu_variant & ~ARM_ANY) |
077b8428 | 8158 | | ARM_8 | ARM_ARCH_V4; |
252b5132 RH |
8159 | else |
8160 | goto bad; | |
8161 | break; | |
28e4f854 | 8162 | |
252b5132 RH |
8163 | case '9': |
8164 | if (streq (str, "9")) | |
ec9991dc | 8165 | cpu_variant = (cpu_variant & ~ARM_ANY) |
077b8428 | 8166 | | ARM_9 | ARM_ARCH_V4T; |
c1d3c45e | 8167 | else if (streq (str, "920")) |
ec9991dc | 8168 | cpu_variant = (cpu_variant & ~ARM_ANY) |
077b8428 | 8169 | | ARM_9 | ARM_ARCH_V4; |
c1d3c45e | 8170 | else if (streq (str, "920t")) |
ec9991dc | 8171 | cpu_variant = (cpu_variant & ~ARM_ANY) |
077b8428 | 8172 | | ARM_9 | ARM_ARCH_V4T; |
252b5132 | 8173 | else if (streq (str, "9tdmi")) |
ec9991dc | 8174 | cpu_variant = (cpu_variant & ~ARM_ANY) |
077b8428 | 8175 | | ARM_9 | ARM_ARCH_V4T; |
252b5132 RH |
8176 | else |
8177 | goto bad; | |
8178 | break; | |
92a66162 | 8179 | |
252b5132 RH |
8180 | case 's': |
8181 | if (streq (str, "strongarm") | |
8182 | || streq (str, "strongarm110") | |
8183 | || streq (str, "strongarm1100")) | |
ec9991dc | 8184 | cpu_variant = (cpu_variant & ~ARM_ANY) |
077b8428 | 8185 | | ARM_8 | ARM_ARCH_V4; |
252b5132 RH |
8186 | else |
8187 | goto bad; | |
8188 | break; | |
28e4f854 | 8189 | |
077b8428 NC |
8190 | case 'x': |
8191 | if (streq (str, "xscale")) | |
8192 | cpu_variant = ARM_9 | ARM_ARCH_XSCALE; | |
8193 | else | |
8194 | goto bad; | |
8195 | break; | |
8196 | ||
252b5132 | 8197 | case 'v': |
28e4f854 KH |
8198 | /* Select variant based on architecture rather than |
8199 | processor. */ | |
252b5132 RH |
8200 | switch (*++str) |
8201 | { | |
8202 | case '2': | |
8203 | switch (*++str) | |
8204 | { | |
ec9991dc NC |
8205 | case 'a': |
8206 | cpu_variant = (cpu_variant & ~ARM_ANY) | ARM_3; | |
8207 | break; | |
8208 | case 0: | |
8209 | cpu_variant = (cpu_variant & ~ARM_ANY) | ARM_2; | |
8210 | break; | |
8211 | default: | |
8212 | as_bad (_("Invalid architecture variant -m%s"), arg); | |
8213 | break; | |
252b5132 RH |
8214 | } |
8215 | break; | |
28e4f854 | 8216 | |
252b5132 | 8217 | case '3': |
28e4f854 KH |
8218 | cpu_variant = (cpu_variant & ~ARM_ANY) | ARM_7; |
8219 | ||
252b5132 RH |
8220 | switch (*++str) |
8221 | { | |
077b8428 | 8222 | case 'm': cpu_variant |= ARM_EXT_LONGMUL; break; |
252b5132 | 8223 | case 0: break; |
ec9991dc NC |
8224 | default: |
8225 | as_bad (_("Invalid architecture variant -m%s"), arg); | |
8226 | break; | |
252b5132 RH |
8227 | } |
8228 | break; | |
28e4f854 | 8229 | |
252b5132 | 8230 | case '4': |
077b8428 | 8231 | cpu_variant = (cpu_variant & ~ARM_ANY) | ARM_7 | ARM_ARCH_V4; |
28e4f854 | 8232 | |
49a5575c NC |
8233 | switch (*++str) |
8234 | { | |
077b8428 | 8235 | case 't': cpu_variant |= ARM_EXT_THUMB; break; |
49a5575c | 8236 | case 0: break; |
ec9991dc NC |
8237 | default: |
8238 | as_bad (_("Invalid architecture variant -m%s"), arg); | |
8239 | break; | |
49a5575c NC |
8240 | } |
8241 | break; | |
92a66162 | 8242 | |
49a5575c | 8243 | case '5': |
077b8428 | 8244 | cpu_variant = (cpu_variant & ~ARM_ANY) | ARM_9 | ARM_ARCH_V5; |
252b5132 RH |
8245 | switch (*++str) |
8246 | { | |
077b8428 NC |
8247 | case 't': cpu_variant |= ARM_EXT_THUMB; break; |
8248 | case 'e': cpu_variant |= ARM_EXT_V5E; break; | |
252b5132 | 8249 | case 0: break; |
ec9991dc NC |
8250 | default: |
8251 | as_bad (_("Invalid architecture variant -m%s"), arg); | |
8252 | break; | |
252b5132 RH |
8253 | } |
8254 | break; | |
28e4f854 | 8255 | |
252b5132 RH |
8256 | default: |
8257 | as_bad (_("Invalid architecture variant -m%s"), arg); | |
8258 | break; | |
8259 | } | |
8260 | break; | |
28e4f854 | 8261 | |
252b5132 RH |
8262 | default: |
8263 | bad: | |
8264 | as_bad (_("Invalid processor variant -m%s"), arg); | |
8265 | return 0; | |
8266 | } | |
8267 | } | |
8268 | break; | |
8269 | ||
325188ec | 8270 | #if defined OBJ_ELF || defined OBJ_COFF |
252b5132 RH |
8271 | case 'k': |
8272 | pic_code = 1; | |
8273 | break; | |
325188ec | 8274 | #endif |
28e4f854 | 8275 | |
252b5132 RH |
8276 | default: |
8277 | return 0; | |
8278 | } | |
8279 | ||
28e4f854 | 8280 | return 1; |
252b5132 RH |
8281 | } |
8282 | ||
8283 | void | |
8284 | md_show_usage (fp) | |
d78c7dca | 8285 | FILE * fp; |
252b5132 | 8286 | { |
ec9991dc | 8287 | fprintf (fp, _("\ |
252b5132 RH |
8288 | ARM Specific Assembler Options:\n\ |
8289 | -m[arm][<processor name>] select processor variant\n\ | |
858f4ff6 | 8290 | -m[arm]v[2|2a|3|3m|4|4t|5[t][e]] select architecture variant\n\ |
252b5132 RH |
8291 | -mthumb only allow Thumb instructions\n\ |
8292 | -mthumb-interwork mark the assembled code as supporting interworking\n\ | |
8293 | -mall allow any instruction\n\ | |
8294 | -mfpa10, -mfpa11 select floating point architecture\n\ | |
8295 | -mfpe-old don't allow floating-point multiple instructions\n\ | |
ec9991dc | 8296 | -mno-fpu don't allow any floating-point instructions.\n\ |
252b5132 RH |
8297 | -k generate PIC code.\n")); |
8298 | #if defined OBJ_COFF || defined OBJ_ELF | |
ec9991dc NC |
8299 | fprintf (fp, _("\ |
8300 | -mapcs-32, -mapcs-26 specify which ARM Procedure Calling Standard to use\n\ | |
077b8428 | 8301 | -matpcs use ARM/Thumb Procedure Calling Standard\n\ |
ec9991dc | 8302 | -mapcs-float floating point args are passed in FP regs\n\ |
252b5132 | 8303 | -mapcs-reentrant the code is position independent/reentrant\n")); |
28e4f854 | 8304 | #endif |
252b5132 | 8305 | #ifdef OBJ_ELF |
ec9991dc | 8306 | fprintf (fp, _("\ |
252b5132 RH |
8307 | -moabi support the old ELF ABI\n")); |
8308 | #endif | |
8309 | #ifdef ARM_BI_ENDIAN | |
ec9991dc | 8310 | fprintf (fp, _("\ |
252b5132 RH |
8311 | -EB assemble code for a big endian cpu\n\ |
8312 | -EL assemble code for a little endian cpu\n")); | |
8313 | #endif | |
8314 | } | |
8315 | ||
8316 | /* We need to be able to fix up arbitrary expressions in some statements. | |
8317 | This is so that we can handle symbols that are an arbitrary distance from | |
8318 | the pc. The most common cases are of the form ((+/-sym -/+ . - 8) & mask), | |
8319 | which returns part of an address in a form which will be valid for | |
8320 | a data instruction. We do this by pushing the expression into a symbol | |
8321 | in the expr_section, and creating a fix for that. */ | |
8322 | ||
8323 | static void | |
8324 | fix_new_arm (frag, where, size, exp, pc_rel, reloc) | |
d78c7dca NC |
8325 | fragS * frag; |
8326 | int where; | |
8327 | short int size; | |
8328 | expressionS * exp; | |
8329 | int pc_rel; | |
8330 | int reloc; | |
252b5132 | 8331 | { |
d78c7dca NC |
8332 | fixS * new_fix; |
8333 | arm_fix_data * arm_data; | |
252b5132 RH |
8334 | |
8335 | switch (exp->X_op) | |
8336 | { | |
8337 | case O_constant: | |
8338 | case O_symbol: | |
8339 | case O_add: | |
8340 | case O_subtract: | |
8341 | new_fix = fix_new_exp (frag, where, size, exp, pc_rel, reloc); | |
8342 | break; | |
8343 | ||
8344 | default: | |
8345 | new_fix = fix_new (frag, where, size, make_expr_symbol (exp), 0, | |
8346 | pc_rel, reloc); | |
8347 | break; | |
8348 | } | |
8349 | ||
28e4f854 KH |
8350 | /* Mark whether the fix is to a THUMB instruction, or an ARM |
8351 | instruction. */ | |
d78c7dca | 8352 | arm_data = (arm_fix_data *) obstack_alloc (& notes, sizeof (arm_fix_data)); |
252b5132 RH |
8353 | new_fix->tc_fix_data = (PTR) arm_data; |
8354 | arm_data->thumb_mode = thumb_mode; | |
8355 | ||
8356 | return; | |
8357 | } | |
8358 | ||
2f992c04 | 8359 | /* This fix_new is called by cons via TC_CONS_FIX_NEW. */ |
28e4f854 | 8360 | |
252b5132 RH |
8361 | void |
8362 | cons_fix_new_arm (frag, where, size, exp) | |
d78c7dca NC |
8363 | fragS * frag; |
8364 | int where; | |
8365 | int size; | |
8366 | expressionS * exp; | |
252b5132 RH |
8367 | { |
8368 | bfd_reloc_code_real_type type; | |
8369 | int pcrel = 0; | |
9bab9349 NC |
8370 | |
8371 | /* Pick a reloc. | |
8372 | FIXME: @@ Should look at CPU word size. */ | |
28e4f854 | 8373 | switch (size) |
252b5132 | 8374 | { |
9bab9349 NC |
8375 | case 1: |
8376 | type = BFD_RELOC_8; | |
8377 | break; | |
252b5132 RH |
8378 | case 2: |
8379 | type = BFD_RELOC_16; | |
8380 | break; | |
8381 | case 4: | |
8382 | default: | |
8383 | type = BFD_RELOC_32; | |
8384 | break; | |
8385 | case 8: | |
8386 | type = BFD_RELOC_64; | |
8387 | break; | |
8388 | } | |
28e4f854 | 8389 | |
252b5132 RH |
8390 | fix_new_exp (frag, where, (int) size, exp, pcrel, type); |
8391 | } | |
8392 | ||
8393 | /* A good place to do this, although this was probably not intended | |
ae5ad4ad NC |
8394 | for this kind of use. We need to dump the literal pool before |
8395 | references are made to a null symbol pointer. */ | |
28e4f854 | 8396 | |
252b5132 RH |
8397 | void |
8398 | arm_cleanup () | |
8399 | { | |
ae5ad4ad NC |
8400 | if (current_poolP == NULL) |
8401 | return; | |
28e4f854 KH |
8402 | |
8403 | /* Put it at the end of text section. */ | |
8404 | subseg_set (text_section, 0); | |
ae5ad4ad NC |
8405 | s_ltorg (0); |
8406 | listing_prev_line (); | |
252b5132 RH |
8407 | } |
8408 | ||
8409 | void | |
8410 | arm_start_line_hook () | |
8411 | { | |
8412 | last_label_seen = NULL; | |
8413 | } | |
8414 | ||
8415 | void | |
8416 | arm_frob_label (sym) | |
d78c7dca | 8417 | symbolS * sym; |
252b5132 RH |
8418 | { |
8419 | last_label_seen = sym; | |
28e4f854 | 8420 | |
252b5132 | 8421 | ARM_SET_THUMB (sym, thumb_mode); |
28e4f854 | 8422 | |
252b5132 RH |
8423 | #if defined OBJ_COFF || defined OBJ_ELF |
8424 | ARM_SET_INTERWORK (sym, support_interwork); | |
8425 | #endif | |
28e4f854 | 8426 | |
0285c67d NC |
8427 | /* Note - do not allow local symbols (.Lxxx) to be labeled |
8428 | as Thumb functions. This is because these labels, whilst | |
8429 | they exist inside Thumb code, are not the entry points for | |
8430 | possible ARM->Thumb calls. Also, these labels can be used | |
8431 | as part of a computed goto or switch statement. eg gcc | |
8432 | can generate code that looks like this: | |
8433 | ||
8434 | ldr r2, [pc, .Laaa] | |
8435 | lsl r3, r3, #2 | |
8436 | ldr r2, [r3, r2] | |
8437 | mov pc, r2 | |
8438 | ||
8439 | .Lbbb: .word .Lxxx | |
8440 | .Lccc: .word .Lyyy | |
8441 | ..etc... | |
8442 | .Laaa: .word Lbbb | |
8443 | ||
8444 | The first instruction loads the address of the jump table. | |
8445 | The second instruction converts a table index into a byte offset. | |
8446 | The third instruction gets the jump address out of the table. | |
8447 | The fourth instruction performs the jump. | |
8448 | ||
8449 | If the address stored at .Laaa is that of a symbol which has the | |
8450 | Thumb_Func bit set, then the linker will arrange for this address | |
8451 | to have the bottom bit set, which in turn would mean that the | |
8452 | address computation performed by the third instruction would end | |
8453 | up with the bottom bit set. Since the ARM is capable of unaligned | |
8454 | word loads, the instruction would then load the incorrect address | |
8455 | out of the jump table, and chaos would ensue. */ | |
8456 | if (label_is_thumb_function_name | |
8457 | && (S_GET_NAME (sym)[0] != '.' || S_GET_NAME (sym)[1] != 'L') | |
8458 | && (bfd_get_section_flags (stdoutput, now_seg) & SEC_CODE) != 0) | |
252b5132 RH |
8459 | { |
8460 | /* When the address of a Thumb function is taken the bottom | |
8461 | bit of that address should be set. This will allow | |
8462 | interworking between Arm and Thumb functions to work | |
8463 | correctly. */ | |
8464 | ||
8465 | THUMB_SET_FUNC (sym, 1); | |
28e4f854 | 8466 | |
252b5132 RH |
8467 | label_is_thumb_function_name = false; |
8468 | } | |
8469 | } | |
8470 | ||
8471 | /* Adjust the symbol table. This marks Thumb symbols as distinct from | |
8472 | ARM ones. */ | |
8473 | ||
8474 | void | |
8475 | arm_adjust_symtab () | |
8476 | { | |
8477 | #ifdef OBJ_COFF | |
d78c7dca | 8478 | symbolS * sym; |
252b5132 RH |
8479 | |
8480 | for (sym = symbol_rootP; sym != NULL; sym = symbol_next (sym)) | |
8481 | { | |
8482 | if (ARM_IS_THUMB (sym)) | |
28e4f854 | 8483 | { |
252b5132 RH |
8484 | if (THUMB_IS_FUNC (sym)) |
8485 | { | |
8486 | /* Mark the symbol as a Thumb function. */ | |
d78c7dca NC |
8487 | if ( S_GET_STORAGE_CLASS (sym) == C_STAT |
8488 | || S_GET_STORAGE_CLASS (sym) == C_LABEL) /* This can happen! */ | |
252b5132 RH |
8489 | S_SET_STORAGE_CLASS (sym, C_THUMBSTATFUNC); |
8490 | ||
8491 | else if (S_GET_STORAGE_CLASS (sym) == C_EXT) | |
8492 | S_SET_STORAGE_CLASS (sym, C_THUMBEXTFUNC); | |
8493 | else | |
8494 | as_bad (_("%s: unexpected function type: %d"), | |
8495 | S_GET_NAME (sym), S_GET_STORAGE_CLASS (sym)); | |
8496 | } | |
d78c7dca NC |
8497 | else switch (S_GET_STORAGE_CLASS (sym)) |
8498 | { | |
8499 | case C_EXT: | |
8500 | S_SET_STORAGE_CLASS (sym, C_THUMBEXT); | |
8501 | break; | |
8502 | case C_STAT: | |
8503 | S_SET_STORAGE_CLASS (sym, C_THUMBSTAT); | |
8504 | break; | |
8505 | case C_LABEL: | |
8506 | S_SET_STORAGE_CLASS (sym, C_THUMBLABEL); | |
8507 | break; | |
8508 | default: | |
8509 | /* Do nothing. */ | |
8510 | break; | |
8511 | } | |
28e4f854 | 8512 | } |
252b5132 RH |
8513 | |
8514 | if (ARM_IS_INTERWORK (sym)) | |
155f0fe7 | 8515 | coffsymbol (symbol_get_bfdsym (sym))->native->u.syment.n_flags = 0xFF; |
252b5132 RH |
8516 | } |
8517 | #endif | |
8518 | #ifdef OBJ_ELF | |
85a39694 NC |
8519 | symbolS * sym; |
8520 | char bind; | |
252b5132 RH |
8521 | |
8522 | for (sym = symbol_rootP; sym != NULL; sym = symbol_next (sym)) | |
8523 | { | |
8524 | if (ARM_IS_THUMB (sym)) | |
28e4f854 | 8525 | { |
85a39694 | 8526 | elf_symbol_type * elf_sym; |
28e4f854 | 8527 | |
2f0ca46a NC |
8528 | elf_sym = elf_symbol (symbol_get_bfdsym (sym)); |
8529 | bind = ELF_ST_BIND (elf_sym); | |
28e4f854 | 8530 | |
ec9991dc NC |
8531 | /* If it's a .thumb_func, declare it as so, |
8532 | otherwise tag label as .code 16. */ | |
252b5132 | 8533 | if (THUMB_IS_FUNC (sym)) |
ec9991dc NC |
8534 | elf_sym->internal_elf_sym.st_info = |
8535 | ELF_ST_INFO (bind, STT_ARM_TFUNC); | |
2f0ca46a | 8536 | else |
ec9991dc NC |
8537 | elf_sym->internal_elf_sym.st_info = |
8538 | ELF_ST_INFO (bind, STT_ARM_16BIT); | |
28e4f854 KH |
8539 | } |
8540 | } | |
252b5132 RH |
8541 | #endif |
8542 | } | |
8543 | ||
8544 | int | |
8545 | arm_data_in_code () | |
8546 | { | |
8547 | if (thumb_mode && ! strncmp (input_line_pointer + 1, "data:", 5)) | |
8548 | { | |
8549 | *input_line_pointer = '/'; | |
8550 | input_line_pointer += 5; | |
8551 | *input_line_pointer = 0; | |
8552 | return 1; | |
8553 | } | |
28e4f854 | 8554 | |
252b5132 RH |
8555 | return 0; |
8556 | } | |
8557 | ||
8558 | char * | |
8559 | arm_canonicalize_symbol_name (name) | |
85a39694 | 8560 | char * name; |
252b5132 RH |
8561 | { |
8562 | int len; | |
8563 | ||
8564 | if (thumb_mode && (len = strlen (name)) > 5 | |
8565 | && streq (name + len - 5, "/data")) | |
ae5ad4ad | 8566 | *(name + len - 5) = 0; |
252b5132 RH |
8567 | |
8568 | return name; | |
8569 | } | |
8570 | ||
8571 | boolean | |
8572 | arm_validate_fix (fixP) | |
85a39694 | 8573 | fixS * fixP; |
252b5132 RH |
8574 | { |
8575 | /* If the destination of the branch is a defined symbol which does not have | |
8576 | the THUMB_FUNC attribute, then we must be calling a function which has | |
8577 | the (interfacearm) attribute. We look for the Thumb entry point to that | |
8578 | function and change the branch to refer to that function instead. */ | |
28e4f854 | 8579 | if (fixP->fx_r_type == BFD_RELOC_THUMB_PCREL_BRANCH23 |
252b5132 RH |
8580 | && fixP->fx_addsy != NULL |
8581 | && S_IS_DEFINED (fixP->fx_addsy) | |
8582 | && ! THUMB_IS_FUNC (fixP->fx_addsy)) | |
8583 | { | |
8584 | fixP->fx_addsy = find_real_start (fixP->fx_addsy); | |
8585 | return true; | |
8586 | } | |
8587 | ||
8588 | return false; | |
8589 | } | |
8590 | ||
7a91e76a NC |
8591 | #ifdef OBJ_COFF |
8592 | /* This is a little hack to help the gas/arm/adrl.s test. It prevents | |
8593 | local labels from being added to the output symbol table when they | |
8594 | are used with the ADRL pseudo op. The ADRL relocation should always | |
8595 | be resolved before the binbary is emitted, so it is safe to say that | |
8596 | it is adjustable. */ | |
8597 | ||
8598 | boolean | |
8599 | arm_fix_adjustable (fixP) | |
8600 | fixS * fixP; | |
8601 | { | |
8602 | if (fixP->fx_r_type == BFD_RELOC_ARM_ADRL_IMMEDIATE) | |
8603 | return 1; | |
8604 | return 0; | |
8605 | } | |
8606 | #endif | |
252b5132 RH |
8607 | #ifdef OBJ_ELF |
8608 | /* Relocations against Thumb function names must be left unadjusted, | |
8609 | so that the linker can use this information to correctly set the | |
8610 | bottom bit of their addresses. The MIPS version of this function | |
8611 | also prevents relocations that are mips-16 specific, but I do not | |
8612 | know why it does this. | |
8613 | ||
8614 | FIXME: | |
8615 | There is one other problem that ought to be addressed here, but | |
8616 | which currently is not: Taking the address of a label (rather | |
8617 | than a function) and then later jumping to that address. Such | |
8618 | addresses also ought to have their bottom bit set (assuming that | |
8619 | they reside in Thumb code), but at the moment they will not. */ | |
28e4f854 | 8620 | |
252b5132 RH |
8621 | boolean |
8622 | arm_fix_adjustable (fixP) | |
85a39694 | 8623 | fixS * fixP; |
252b5132 | 8624 | { |
252b5132 RH |
8625 | if (fixP->fx_addsy == NULL) |
8626 | return 1; | |
28e4f854 KH |
8627 | |
8628 | /* Prevent all adjustments to global symbols. */ | |
252b5132 RH |
8629 | if (S_IS_EXTERN (fixP->fx_addsy)) |
8630 | return 0; | |
28e4f854 | 8631 | |
252b5132 RH |
8632 | if (S_IS_WEAK (fixP->fx_addsy)) |
8633 | return 0; | |
8634 | ||
8635 | if (THUMB_IS_FUNC (fixP->fx_addsy) | |
8636 | && fixP->fx_subsy == NULL) | |
8637 | return 0; | |
28e4f854 KH |
8638 | |
8639 | /* We need the symbol name for the VTABLE entries. */ | |
d78c7dca | 8640 | if ( fixP->fx_r_type == BFD_RELOC_VTABLE_INHERIT |
252b5132 RH |
8641 | || fixP->fx_r_type == BFD_RELOC_VTABLE_ENTRY) |
8642 | return 0; | |
8643 | ||
8644 | return 1; | |
8645 | } | |
8646 | ||
8647 | const char * | |
8648 | elf32_arm_target_format () | |
8649 | { | |
8650 | if (target_big_endian) | |
28e4f854 KH |
8651 | { |
8652 | if (target_oabi) | |
8653 | return "elf32-bigarm-oabi"; | |
8654 | else | |
8655 | return "elf32-bigarm"; | |
8656 | } | |
252b5132 | 8657 | else |
28e4f854 KH |
8658 | { |
8659 | if (target_oabi) | |
8660 | return "elf32-littlearm-oabi"; | |
8661 | else | |
8662 | return "elf32-littlearm"; | |
8663 | } | |
252b5132 RH |
8664 | } |
8665 | ||
8666 | void | |
8667 | armelf_frob_symbol (symp, puntp) | |
d78c7dca NC |
8668 | symbolS * symp; |
8669 | int * puntp; | |
252b5132 RH |
8670 | { |
8671 | elf_frob_symbol (symp, puntp); | |
28e4f854 | 8672 | } |
252b5132 RH |
8673 | |
8674 | int | |
8675 | arm_force_relocation (fixp) | |
d78c7dca | 8676 | struct fix * fixp; |
252b5132 | 8677 | { |
d78c7dca | 8678 | if ( fixp->fx_r_type == BFD_RELOC_VTABLE_INHERIT |
252b5132 | 8679 | || fixp->fx_r_type == BFD_RELOC_VTABLE_ENTRY |
ae5ad4ad | 8680 | || fixp->fx_r_type == BFD_RELOC_ARM_PCREL_BRANCH |
d92b1a8a NC |
8681 | || fixp->fx_r_type == BFD_RELOC_ARM_PCREL_BLX |
8682 | || fixp->fx_r_type == BFD_RELOC_THUMB_PCREL_BLX | |
28e4f854 | 8683 | || fixp->fx_r_type == BFD_RELOC_THUMB_PCREL_BRANCH23) |
252b5132 | 8684 | return 1; |
28e4f854 | 8685 | |
252b5132 RH |
8686 | return 0; |
8687 | } | |
8688 | ||
8689 | static bfd_reloc_code_real_type | |
8690 | arm_parse_reloc () | |
8691 | { | |
d78c7dca NC |
8692 | char id [16]; |
8693 | char * ip; | |
684b81fa | 8694 | unsigned int i; |
252b5132 RH |
8695 | static struct |
8696 | { | |
d78c7dca NC |
8697 | char * str; |
8698 | int len; | |
252b5132 RH |
8699 | bfd_reloc_code_real_type reloc; |
8700 | } | |
8701 | reloc_map[] = | |
8702 | { | |
8cb8bcba | 8703 | #define MAP(str,reloc) { str, sizeof (str) - 1, reloc } |
252b5132 RH |
8704 | MAP ("(got)", BFD_RELOC_ARM_GOT32), |
8705 | MAP ("(gotoff)", BFD_RELOC_ARM_GOTOFF), | |
28e4f854 KH |
8706 | /* ScottB: Jan 30, 1998 - Added support for parsing "var(PLT)" |
8707 | branch instructions generated by GCC for PLT relocs. */ | |
252b5132 | 8708 | MAP ("(plt)", BFD_RELOC_ARM_PLT32), |
29c4c6b5 | 8709 | { NULL, 0, BFD_RELOC_UNUSED } |
28e4f854 | 8710 | #undef MAP |
252b5132 RH |
8711 | }; |
8712 | ||
8713 | for (i = 0, ip = input_line_pointer; | |
8714 | i < sizeof (id) && (isalnum (*ip) || ispunct (*ip)); | |
8715 | i++, ip++) | |
8716 | id[i] = tolower (*ip); | |
28e4f854 | 8717 | |
252b5132 RH |
8718 | for (i = 0; reloc_map[i].str; i++) |
8719 | if (strncmp (id, reloc_map[i].str, reloc_map[i].len) == 0) | |
8720 | break; | |
28e4f854 | 8721 | |
252b5132 | 8722 | input_line_pointer += reloc_map[i].len; |
28e4f854 | 8723 | |
252b5132 RH |
8724 | return reloc_map[i].reloc; |
8725 | } | |
8726 | ||
8727 | static void | |
8728 | s_arm_elf_cons (nbytes) | |
8729 | int nbytes; | |
8730 | { | |
8731 | expressionS exp; | |
8732 | ||
8733 | #ifdef md_flush_pending_output | |
8734 | md_flush_pending_output (); | |
8735 | #endif | |
8736 | ||
8737 | if (is_it_end_of_statement ()) | |
8738 | { | |
8739 | demand_empty_rest_of_line (); | |
8740 | return; | |
8741 | } | |
8742 | ||
8743 | #ifdef md_cons_align | |
8744 | md_cons_align (nbytes); | |
8745 | #endif | |
8746 | ||
8747 | do | |
8748 | { | |
8749 | bfd_reloc_code_real_type reloc; | |
28e4f854 | 8750 | |
d78c7dca | 8751 | expression (& exp); |
252b5132 RH |
8752 | |
8753 | if (exp.X_op == O_symbol | |
85a39694 | 8754 | && * input_line_pointer == '(' |
28e4f854 KH |
8755 | && (reloc = arm_parse_reloc ()) != BFD_RELOC_UNUSED) |
8756 | { | |
8757 | reloc_howto_type *howto = bfd_reloc_type_lookup (stdoutput, reloc); | |
8758 | int size = bfd_get_reloc_size (howto); | |
8759 | ||
8760 | if (size > nbytes) | |
8761 | as_bad ("%s relocations do not fit in %d bytes", | |
ec9991dc | 8762 | howto->name, nbytes); |
28e4f854 KH |
8763 | else |
8764 | { | |
8765 | register char *p = frag_more ((int) nbytes); | |
8766 | int offset = nbytes - size; | |
8767 | ||
8768 | fix_new_exp (frag_now, p - frag_now->fr_literal + offset, size, | |
8769 | &exp, 0, reloc); | |
8770 | } | |
8771 | } | |
252b5132 | 8772 | else |
28e4f854 | 8773 | emit_expr (&exp, (unsigned int) nbytes); |
252b5132 RH |
8774 | } |
8775 | while (*input_line_pointer++ == ','); | |
8776 | ||
28e4f854 | 8777 | /* Put terminator back into stream. */ |
d78c7dca | 8778 | input_line_pointer --; |
252b5132 RH |
8779 | demand_empty_rest_of_line (); |
8780 | } | |
8781 | ||
8782 | #endif /* OBJ_ELF */ | |
16a0c2d4 NC |
8783 | |
8784 | /* This is called from HANDLE_ALIGN in write.c. Fill in the contents | |
8785 | of an rs_align_code fragment. */ | |
8786 | ||
8787 | void | |
8788 | arm_handle_align (fragp) | |
8789 | fragS *fragp; | |
8790 | { | |
8791 | static char const arm_noop[4] = { 0x00, 0x00, 0xa0, 0xe1 }; | |
8792 | static char const thumb_noop[2] = { 0xc0, 0x46 }; | |
8793 | static char const arm_bigend_noop[4] = { 0xe1, 0xa0, 0x00, 0x00 }; | |
8794 | static char const thumb_bigend_noop[2] = { 0x46, 0xc0 }; | |
8795 | ||
8796 | int bytes, fix, noop_size; | |
8797 | char * p; | |
8798 | const char * noop; | |
8799 | ||
8800 | if (fragp->fr_type != rs_align_code) | |
8801 | return; | |
8802 | ||
8803 | bytes = fragp->fr_next->fr_address - fragp->fr_address - fragp->fr_fix; | |
8804 | p = fragp->fr_literal + fragp->fr_fix; | |
8805 | fix = 0; | |
8806 | ||
8807 | if (fragp->tc_frag_data) | |
8808 | { | |
8809 | if (target_big_endian) | |
8810 | noop = thumb_bigend_noop; | |
8811 | else | |
8812 | noop = thumb_noop; | |
8813 | noop_size = sizeof (thumb_noop); | |
8814 | } | |
8815 | else | |
8816 | { | |
8817 | if (target_big_endian) | |
8818 | noop = arm_bigend_noop; | |
8819 | else | |
8820 | noop = arm_noop; | |
8821 | noop_size = sizeof (arm_noop); | |
8822 | } | |
8823 | ||
8824 | if (bytes & (noop_size - 1)) | |
8825 | { | |
8826 | fix = bytes & (noop_size - 1); | |
8827 | memset (p, 0, fix); | |
8828 | p += fix; | |
8829 | bytes -= fix; | |
8830 | } | |
8831 | ||
8832 | while (bytes >= noop_size) | |
8833 | { | |
8834 | memcpy (p, noop, noop_size); | |
8835 | p += noop_size; | |
8836 | bytes -= noop_size; | |
8837 | fix += noop_size; | |
8838 | } | |
8839 | ||
8840 | fragp->fr_fix += fix; | |
8841 | fragp->fr_var = noop_size; | |
8842 | } | |
8843 | ||
8844 | /* Called from md_do_align. Used to create an alignment | |
8845 | frag in a code section. */ | |
8846 | ||
8847 | void | |
8848 | arm_frag_align_code (n, max) | |
8849 | int n; | |
8850 | int max; | |
8851 | { | |
8852 | char * p; | |
8853 | ||
8854 | /* We assume that there will never be a requirment | |
8855 | to support alignments greater than 32 bytes. */ | |
8856 | if (max > 31) | |
5cb1517b | 8857 | as_fatal (_("alignments greater than 32 bytes not supported in .text sections.")); |
16a0c2d4 NC |
8858 | |
8859 | p = frag_var (rs_align_code, | |
8860 | 31, | |
8861 | 1, | |
8862 | (relax_substateT) max, | |
8863 | (symbolS *) NULL, | |
8864 | (offsetT) n, | |
8865 | (char *) NULL); | |
8866 | *p = 0; | |
8867 | ||
8868 | } | |
8869 | ||
8870 | /* Perform target specific initialisation of a frag. */ | |
8871 | ||
8872 | void | |
8873 | arm_init_frag (fragp) | |
8874 | fragS *fragp; | |
8875 | { | |
8876 | /* Record whether this frag is in an ARM or a THUMB area. */ | |
8877 | fragp->tc_frag_data = thumb_mode; | |
8878 | } |