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ee86248c | 1 | /* tc-i386.c -- Assemble Intel syntax code for ix86/x86-64 |
f09c1772 | 2 | Copyright 2009, 2010 |
ee86248c JB |
3 | Free Software Foundation, Inc. |
4 | ||
5 | This file is part of GAS, the GNU Assembler. | |
6 | ||
7 | GAS is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 3, or (at your option) | |
10 | any later version. | |
11 | ||
12 | GAS is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with GAS; see the file COPYING. If not, write to the Free | |
19 | Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA | |
20 | 02110-1301, USA. */ | |
21 | ||
22 | static struct | |
23 | { | |
24 | operatorT op_modifier; /* Operand modifier. */ | |
25 | int is_mem; /* 1 if operand is memory reference. */ | |
25303607 | 26 | int is_indirect; /* 1 if operand is indirect reference. */ |
6cee4cda | 27 | int has_offset; /* 1 if operand has offset. */ |
ee86248c JB |
28 | unsigned int in_offset; /* >=1 if processing operand of offset. */ |
29 | unsigned int in_bracket; /* >=1 if processing operand in brackets. */ | |
30 | unsigned int in_scale; /* >=1 if processing multipication operand | |
31 | * in brackets. */ | |
32 | i386_operand_type reloc_types; /* Value obtained from lex_got(). */ | |
33 | const reg_entry *base; /* Base register (if any). */ | |
34 | const reg_entry *index; /* Index register (if any). */ | |
35 | offsetT scale_factor; /* Accumulated scale factor. */ | |
36 | symbolS *seg; | |
37 | } | |
38 | intel_state; | |
39 | ||
40 | /* offset X_add_symbol */ | |
41 | #define O_offset O_md32 | |
7ac3eb25 L |
42 | /* offset X_add_symbol */ |
43 | #define O_short O_md31 | |
44 | /* near ptr X_add_symbol */ | |
45 | #define O_near_ptr O_md30 | |
46 | /* far ptr X_add_symbol */ | |
47 | #define O_far_ptr O_md29 | |
ee86248c | 48 | /* byte ptr X_add_symbol */ |
7ac3eb25 | 49 | #define O_byte_ptr O_md28 |
ee86248c | 50 | /* word ptr X_add_symbol */ |
7ac3eb25 | 51 | #define O_word_ptr O_md27 |
ee86248c | 52 | /* dword ptr X_add_symbol */ |
7ac3eb25 | 53 | #define O_dword_ptr O_md26 |
ee86248c | 54 | /* qword ptr X_add_symbol */ |
7ac3eb25 | 55 | #define O_qword_ptr O_md25 |
ee86248c | 56 | /* oword ptr X_add_symbol */ |
7ac3eb25 | 57 | #define O_oword_ptr O_md24 |
ee86248c | 58 | /* fword ptr X_add_symbol */ |
7ac3eb25 | 59 | #define O_fword_ptr O_md23 |
ee86248c | 60 | /* tbyte ptr X_add_symbol */ |
7ac3eb25 | 61 | #define O_tbyte_ptr O_md22 |
ee86248c | 62 | /* xmmword ptr X_add_symbol */ |
7ac3eb25 | 63 | #define O_xmmword_ptr O_md21 |
ee86248c | 64 | /* ymmword ptr X_add_symbol */ |
7ac3eb25 | 65 | #define O_ymmword_ptr O_md20 |
ee86248c JB |
66 | |
67 | static struct | |
68 | { | |
69 | const char *name; | |
1e9cc1c2 | 70 | operatorT op; |
ee86248c JB |
71 | unsigned int operands; |
72 | } | |
73 | const i386_operators[] = | |
74 | { | |
75 | { "and", O_bit_and, 2 }, | |
76 | { "eq", O_eq, 2 }, | |
77 | { "ge", O_ge, 2 }, | |
78 | { "gt", O_gt, 2 }, | |
79 | { "le", O_le, 2 }, | |
80 | { "lt", O_lt, 2 }, | |
81 | { "mod", O_modulus, 2 }, | |
82 | { "ne", O_ne, 2 }, | |
83 | { "not", O_bit_not, 1 }, | |
84 | { "offset", O_offset, 1 }, | |
85 | { "or", O_bit_inclusive_or, 2 }, | |
86 | { "shl", O_left_shift, 2 }, | |
87 | { "short", O_short, 1 }, | |
88 | { "shr", O_right_shift, 2 }, | |
89 | { "xor", O_bit_exclusive_or, 2 }, | |
90 | { NULL, O_illegal, 0 } | |
91 | }; | |
92 | ||
93 | static struct | |
94 | { | |
95 | const char *name; | |
1e9cc1c2 | 96 | operatorT op; |
ee86248c JB |
97 | unsigned short sz[3]; |
98 | } | |
99 | const i386_types[] = | |
100 | { | |
101 | #define I386_TYPE(t, n) { #t, O_##t##_ptr, { n, n, n } } | |
102 | I386_TYPE(byte, 1), | |
103 | I386_TYPE(word, 2), | |
104 | I386_TYPE(dword, 4), | |
105 | I386_TYPE(fword, 6), | |
106 | I386_TYPE(qword, 8), | |
107 | I386_TYPE(tbyte, 10), | |
108 | I386_TYPE(oword, 16), | |
109 | I386_TYPE(xmmword, 16), | |
110 | I386_TYPE(ymmword, 32), | |
111 | #undef I386_TYPE | |
112 | { "near", O_near_ptr, { 0xff04, 0xff02, 0xff08 } }, | |
113 | { "far", O_far_ptr, { 0xff06, 0xff05, 0xff06 } }, | |
114 | { NULL, O_illegal, { 0, 0, 0 } } | |
115 | }; | |
116 | ||
117 | operatorT i386_operator (const char *name, unsigned int operands, char *pc) | |
118 | { | |
119 | unsigned int j; | |
120 | ||
121 | if (!intel_syntax) | |
122 | return O_absent; | |
123 | ||
124 | if (!name) | |
125 | { | |
126 | if (operands != 2) | |
127 | return O_illegal; | |
128 | switch (*input_line_pointer) | |
129 | { | |
130 | case ':': | |
131 | ++input_line_pointer; | |
132 | return O_full_ptr; | |
133 | case '[': | |
134 | ++input_line_pointer; | |
135 | return O_index; | |
136 | case '@': | |
137 | if (this_operand >= 0 && i.reloc[this_operand] == NO_RELOC) | |
138 | { | |
139 | int adjust = 0; | |
140 | char *gotfree_input_line = lex_got (&i.reloc[this_operand], | |
141 | &adjust, | |
142 | &intel_state.reloc_types); | |
143 | ||
144 | if (!gotfree_input_line) | |
145 | break; | |
146 | free (gotfree_input_line); | |
147 | *input_line_pointer++ = '+'; | |
148 | memset (input_line_pointer, '0', adjust - 1); | |
149 | input_line_pointer[adjust - 1] = ' '; | |
150 | return O_add; | |
151 | } | |
152 | break; | |
153 | } | |
154 | return O_illegal; | |
155 | } | |
156 | ||
157 | for (j = 0; i386_operators[j].name; ++j) | |
91d6fa6a | 158 | if (strcasecmp (i386_operators[j].name, name) == 0) |
ee86248c JB |
159 | { |
160 | if (i386_operators[j].operands | |
161 | && i386_operators[j].operands != operands) | |
162 | return O_illegal; | |
1e9cc1c2 | 163 | return i386_operators[j].op; |
ee86248c JB |
164 | } |
165 | ||
166 | for (j = 0; i386_types[j].name; ++j) | |
91d6fa6a | 167 | if (strcasecmp (i386_types[j].name, name) == 0) |
ee86248c JB |
168 | break; |
169 | if (i386_types[j].name && *pc == ' ') | |
170 | { | |
91d6fa6a | 171 | char *pname = ++input_line_pointer; |
ee86248c JB |
172 | char c = get_symbol_end (); |
173 | ||
91d6fa6a | 174 | if (strcasecmp (pname, "ptr") == 0) |
ee86248c | 175 | { |
91d6fa6a | 176 | pname[-1] = *pc; |
ee86248c JB |
177 | *pc = c; |
178 | if (intel_syntax > 0 || operands != 1) | |
179 | return O_illegal; | |
1e9cc1c2 | 180 | return i386_types[j].op; |
ee86248c JB |
181 | } |
182 | ||
183 | *input_line_pointer = c; | |
91d6fa6a | 184 | input_line_pointer = pname - 1; |
ee86248c JB |
185 | } |
186 | ||
187 | return O_absent; | |
188 | } | |
189 | ||
190 | static int i386_intel_parse_name (const char *name, expressionS *e) | |
191 | { | |
91d6fa6a | 192 | unsigned int j; |
ee86248c | 193 | |
b7adb16d JB |
194 | if (! strcmp (name, "$")) |
195 | { | |
196 | current_location (e); | |
197 | return 1; | |
198 | } | |
199 | ||
91d6fa6a NC |
200 | for (j = 0; i386_types[j].name; ++j) |
201 | if (strcasecmp(i386_types[j].name, name) == 0) | |
ee86248c JB |
202 | { |
203 | e->X_op = O_constant; | |
91d6fa6a | 204 | e->X_add_number = i386_types[j].sz[flag_code]; |
ee86248c JB |
205 | e->X_add_symbol = NULL; |
206 | e->X_op_symbol = NULL; | |
207 | return 1; | |
208 | } | |
209 | ||
210 | return 0; | |
211 | } | |
212 | ||
91d6fa6a | 213 | static INLINE int i386_intel_check (const reg_entry *rreg, |
ee86248c | 214 | const reg_entry *base, |
91d6fa6a | 215 | const reg_entry *iindex) |
ee86248c | 216 | { |
f09c1772 L |
217 | if ((this_operand >= 0 |
218 | && rreg != i.op[this_operand].regs) | |
219 | || base != intel_state.base | |
220 | || iindex != intel_state.index) | |
ee86248c JB |
221 | { |
222 | as_bad (_("invalid use of register")); | |
223 | return 0; | |
224 | } | |
225 | return 1; | |
226 | } | |
227 | ||
228 | static INLINE void i386_intel_fold (expressionS *e, symbolS *sym) | |
229 | { | |
27dee630 | 230 | expressionS *exp = symbol_get_value_expression (sym); |
ee86248c JB |
231 | if (S_GET_SEGMENT (sym) == absolute_section) |
232 | { | |
233 | offsetT val = e->X_add_number; | |
234 | ||
27dee630 | 235 | *e = *exp; |
ee86248c JB |
236 | e->X_add_number += val; |
237 | } | |
238 | else | |
239 | { | |
27dee630 L |
240 | if (exp->X_op == O_symbol |
241 | && strcmp (S_GET_NAME (exp->X_add_symbol), | |
242 | GLOBAL_OFFSET_TABLE_NAME) == 0) | |
243 | sym = exp->X_add_symbol; | |
ee86248c JB |
244 | e->X_add_symbol = sym; |
245 | e->X_op_symbol = NULL; | |
246 | e->X_op = O_symbol; | |
247 | } | |
248 | } | |
249 | ||
3c7b9c2c L |
250 | static int |
251 | i386_intel_simplify_register (expressionS *e) | |
252 | { | |
253 | int reg_num; | |
254 | ||
255 | if (this_operand < 0 || intel_state.in_offset) | |
256 | { | |
257 | as_bad (_("invalid use of register")); | |
258 | return 0; | |
259 | } | |
260 | ||
261 | if (e->X_op == O_register) | |
262 | reg_num = e->X_add_number; | |
263 | else | |
264 | reg_num = e->X_md - 1; | |
265 | ||
266 | if (!intel_state.in_bracket) | |
267 | { | |
268 | if (i.op[this_operand].regs) | |
269 | { | |
270 | as_bad (_("invalid use of register")); | |
271 | return 0; | |
272 | } | |
273 | if (i386_regtab[reg_num].reg_type.bitfield.sreg3 | |
274 | && i386_regtab[reg_num].reg_num == RegFlat) | |
275 | { | |
276 | as_bad (_("invalid use of pseudo-register")); | |
277 | return 0; | |
278 | } | |
279 | i.op[this_operand].regs = i386_regtab + reg_num; | |
280 | } | |
9e2934f7 JB |
281 | else if (!intel_state.index |
282 | && (i386_regtab[reg_num].reg_type.bitfield.regxmm | |
283 | || i386_regtab[reg_num].reg_type.bitfield.regymm)) | |
284 | intel_state.index = i386_regtab + reg_num; | |
3c7b9c2c L |
285 | else if (!intel_state.base && !intel_state.in_scale) |
286 | intel_state.base = i386_regtab + reg_num; | |
287 | else if (!intel_state.index) | |
9e2934f7 JB |
288 | { |
289 | if (intel_state.in_scale | |
290 | || i386_regtab[reg_num].reg_type.bitfield.baseindex) | |
291 | intel_state.index = i386_regtab + reg_num; | |
292 | else | |
293 | { | |
294 | /* Convert base to index and make ESP/RSP the base. */ | |
295 | intel_state.index = intel_state.base; | |
296 | intel_state.base = i386_regtab + reg_num; | |
297 | } | |
298 | } | |
3c7b9c2c L |
299 | else |
300 | { | |
301 | /* esp is invalid as index */ | |
8280f326 | 302 | intel_state.index = i386_regtab + REGNAM_EAX + ESP_REG_NUM; |
3c7b9c2c L |
303 | } |
304 | return 2; | |
305 | } | |
306 | ||
ee86248c JB |
307 | static int i386_intel_simplify (expressionS *); |
308 | ||
309 | static INLINE int i386_intel_simplify_symbol(symbolS *sym) | |
310 | { | |
311 | int ret = i386_intel_simplify (symbol_get_value_expression (sym)); | |
312 | ||
313 | if (ret == 2) | |
314 | { | |
315 | S_SET_SEGMENT(sym, absolute_section); | |
316 | ret = 1; | |
317 | } | |
318 | return ret; | |
319 | } | |
320 | ||
321 | static int i386_intel_simplify (expressionS *e) | |
322 | { | |
f09c1772 L |
323 | const reg_entry *the_reg = (this_operand >= 0 |
324 | ? i.op[this_operand].regs : NULL); | |
ee86248c | 325 | const reg_entry *base = intel_state.base; |
91d6fa6a | 326 | const reg_entry *state_index = intel_state.index; |
ee86248c JB |
327 | int ret; |
328 | ||
329 | if (!intel_syntax) | |
330 | return 1; | |
331 | ||
332 | switch (e->X_op) | |
333 | { | |
334 | case O_index: | |
335 | if (e->X_add_symbol) | |
336 | { | |
337 | if (!i386_intel_simplify_symbol (e->X_add_symbol) | |
f09c1772 L |
338 | || !i386_intel_check(the_reg, intel_state.base, |
339 | intel_state.index)) | |
ee86248c JB |
340 | return 0;; |
341 | } | |
342 | if (!intel_state.in_offset) | |
343 | ++intel_state.in_bracket; | |
344 | ret = i386_intel_simplify_symbol (e->X_op_symbol); | |
345 | if (!intel_state.in_offset) | |
346 | --intel_state.in_bracket; | |
347 | if (!ret) | |
348 | return 0; | |
349 | if (e->X_add_symbol) | |
350 | e->X_op = O_add; | |
351 | else | |
352 | i386_intel_fold (e, e->X_op_symbol); | |
353 | break; | |
354 | ||
355 | case O_offset: | |
6cee4cda | 356 | intel_state.has_offset = 1; |
ee86248c JB |
357 | ++intel_state.in_offset; |
358 | ret = i386_intel_simplify_symbol (e->X_add_symbol); | |
359 | --intel_state.in_offset; | |
91d6fa6a | 360 | if (!ret || !i386_intel_check(the_reg, base, state_index)) |
ee86248c JB |
361 | return 0; |
362 | i386_intel_fold (e, e->X_add_symbol); | |
363 | return ret; | |
364 | ||
365 | case O_byte_ptr: | |
366 | case O_word_ptr: | |
367 | case O_dword_ptr: | |
368 | case O_fword_ptr: | |
369 | case O_qword_ptr: | |
370 | case O_tbyte_ptr: | |
371 | case O_oword_ptr: | |
372 | case O_xmmword_ptr: | |
373 | case O_ymmword_ptr: | |
374 | case O_near_ptr: | |
375 | case O_far_ptr: | |
376 | if (intel_state.op_modifier == O_absent) | |
377 | intel_state.op_modifier = e->X_op; | |
378 | /* FALLTHROUGH */ | |
379 | case O_short: | |
f09c1772 L |
380 | if (symbol_get_value_expression (e->X_add_symbol)->X_op |
381 | == O_register) | |
ee86248c JB |
382 | { |
383 | as_bad (_("invalid use of register")); | |
384 | return 0; | |
385 | } | |
386 | if (!i386_intel_simplify_symbol (e->X_add_symbol)) | |
387 | return 0; | |
388 | i386_intel_fold (e, e->X_add_symbol); | |
389 | break; | |
390 | ||
391 | case O_full_ptr: | |
f09c1772 L |
392 | if (symbol_get_value_expression (e->X_op_symbol)->X_op |
393 | == O_register) | |
ee86248c JB |
394 | { |
395 | as_bad (_("invalid use of register")); | |
396 | return 0; | |
397 | } | |
398 | if (!i386_intel_simplify_symbol (e->X_op_symbol) | |
f09c1772 L |
399 | || !i386_intel_check(the_reg, intel_state.base, |
400 | intel_state.index)) | |
ee86248c JB |
401 | return 0; |
402 | if (!intel_state.in_offset) | |
403 | intel_state.seg = e->X_add_symbol; | |
404 | i386_intel_fold (e, e->X_op_symbol); | |
405 | break; | |
406 | ||
ee86248c JB |
407 | case O_multiply: |
408 | if (this_operand >= 0 && intel_state.in_bracket) | |
409 | { | |
410 | expressionS *scale = NULL; | |
411 | ||
412 | if (intel_state.index) | |
413 | --scale; | |
414 | ||
415 | if (!intel_state.in_scale++) | |
416 | intel_state.scale_factor = 1; | |
417 | ||
418 | ret = i386_intel_simplify_symbol (e->X_add_symbol); | |
419 | if (ret && !scale && intel_state.index) | |
420 | scale = symbol_get_value_expression (e->X_op_symbol); | |
421 | ||
422 | if (ret) | |
423 | ret = i386_intel_simplify_symbol (e->X_op_symbol); | |
424 | if (ret && !scale && intel_state.index) | |
425 | scale = symbol_get_value_expression (e->X_add_symbol); | |
426 | ||
427 | if (ret && scale && (scale + 1)) | |
428 | { | |
429 | resolve_expression (scale); | |
430 | if (scale->X_op != O_constant | |
431 | || intel_state.index->reg_type.bitfield.reg16) | |
432 | scale->X_add_number = 0; | |
433 | intel_state.scale_factor *= scale->X_add_number; | |
434 | } | |
435 | ||
436 | --intel_state.in_scale; | |
437 | if (!ret) | |
438 | return 0; | |
439 | ||
440 | if (!intel_state.in_scale) | |
441 | switch (intel_state.scale_factor) | |
442 | { | |
443 | case 1: | |
444 | i.log2_scale_factor = 0; | |
445 | break; | |
446 | case 2: | |
447 | i.log2_scale_factor = 1; | |
448 | break; | |
449 | case 4: | |
450 | i.log2_scale_factor = 2; | |
451 | break; | |
452 | case 8: | |
453 | i.log2_scale_factor = 3; | |
454 | break; | |
455 | default: | |
456 | /* esp is invalid as index */ | |
8280f326 | 457 | intel_state.index = i386_regtab + REGNAM_EAX + ESP_REG_NUM; |
ee86248c JB |
458 | break; |
459 | } | |
460 | ||
461 | break; | |
462 | } | |
92b4f90c | 463 | goto fallthrough; |
3c7b9c2c L |
464 | |
465 | case O_register: | |
466 | ret = i386_intel_simplify_register (e); | |
467 | if (ret == 2) | |
468 | { | |
469 | gas_assert (e->X_add_number < (unsigned short) -1); | |
470 | e->X_md = (unsigned short) e->X_add_number + 1; | |
471 | e->X_op = O_constant; | |
472 | e->X_add_number = 0; | |
473 | } | |
474 | return ret; | |
475 | ||
476 | case O_constant: | |
477 | if (e->X_md) | |
478 | return i386_intel_simplify_register (e); | |
479 | ||
ee86248c JB |
480 | /* FALLTHROUGH */ |
481 | default: | |
92b4f90c | 482 | fallthrough: |
f09c1772 L |
483 | if (e->X_add_symbol |
484 | && !i386_intel_simplify_symbol (e->X_add_symbol)) | |
ee86248c JB |
485 | return 0; |
486 | if (e->X_op == O_add || e->X_op == O_subtract) | |
487 | { | |
488 | base = intel_state.base; | |
91d6fa6a | 489 | state_index = intel_state.index; |
ee86248c | 490 | } |
91d6fa6a | 491 | if (!i386_intel_check (the_reg, base, state_index) |
f09c1772 L |
492 | || (e->X_op_symbol |
493 | && !i386_intel_simplify_symbol (e->X_op_symbol)) | |
91d6fa6a | 494 | || !i386_intel_check (the_reg, |
f09c1772 L |
495 | (e->X_op != O_add |
496 | ? base : intel_state.base), | |
497 | (e->X_op != O_add | |
498 | ? state_index : intel_state.index))) | |
ee86248c JB |
499 | return 0; |
500 | break; | |
501 | } | |
502 | ||
f09c1772 L |
503 | if (this_operand >= 0 |
504 | && e->X_op == O_symbol | |
505 | && !intel_state.in_offset) | |
ee86248c JB |
506 | { |
507 | segT seg = S_GET_SEGMENT (e->X_add_symbol); | |
508 | ||
509 | if (seg != absolute_section | |
510 | && seg != reg_section | |
511 | && seg != expr_section) | |
512 | intel_state.is_mem |= 2 - !intel_state.in_bracket; | |
513 | } | |
514 | ||
515 | return 1; | |
516 | } | |
517 | ||
518 | int i386_need_index_operator (void) | |
519 | { | |
520 | return intel_syntax < 0; | |
521 | } | |
522 | ||
523 | static int | |
524 | i386_intel_operand (char *operand_string, int got_a_float) | |
525 | { | |
526 | char *saved_input_line_pointer, *buf; | |
527 | segT exp_seg; | |
528 | expressionS exp, *expP; | |
529 | char suffix = 0; | |
530 | int ret; | |
531 | ||
532 | /* Initialize state structure. */ | |
533 | intel_state.op_modifier = O_absent; | |
534 | intel_state.is_mem = 0; | |
25303607 | 535 | intel_state.is_indirect = 0; |
1acf546e | 536 | intel_state.has_offset = 0; |
ee86248c JB |
537 | intel_state.base = NULL; |
538 | intel_state.index = NULL; | |
539 | intel_state.seg = NULL; | |
540 | operand_type_set (&intel_state.reloc_types, ~0); | |
9c2799c2 NC |
541 | gas_assert (!intel_state.in_offset); |
542 | gas_assert (!intel_state.in_bracket); | |
543 | gas_assert (!intel_state.in_scale); | |
ee86248c JB |
544 | |
545 | saved_input_line_pointer = input_line_pointer; | |
546 | input_line_pointer = buf = xstrdup (operand_string); | |
547 | ||
548 | intel_syntax = -1; | |
549 | memset (&exp, 0, sizeof(exp)); | |
550 | exp_seg = expression (&exp); | |
551 | ret = i386_intel_simplify (&exp); | |
552 | intel_syntax = 1; | |
553 | ||
554 | SKIP_WHITESPACE (); | |
555 | if (!is_end_of_line[(unsigned char) *input_line_pointer]) | |
556 | { | |
557 | as_bad (_("junk `%s' after expression"), input_line_pointer); | |
558 | ret = 0; | |
559 | } | |
560 | else if (exp.X_op == O_illegal || exp.X_op == O_absent) | |
561 | { | |
562 | as_bad (_("invalid expression")); | |
563 | ret = 0; | |
564 | } | |
6cee4cda L |
565 | else if (!intel_state.has_offset |
566 | && input_line_pointer > buf | |
567 | && *(input_line_pointer - 1) == ']') | |
25303607 L |
568 | { |
569 | intel_state.is_mem |= 1; | |
570 | intel_state.is_indirect = 1; | |
571 | } | |
ee86248c JB |
572 | |
573 | input_line_pointer = saved_input_line_pointer; | |
574 | free (buf); | |
575 | ||
9c2799c2 NC |
576 | gas_assert (!intel_state.in_offset); |
577 | gas_assert (!intel_state.in_bracket); | |
578 | gas_assert (!intel_state.in_scale); | |
ee86248c JB |
579 | |
580 | if (!ret) | |
581 | return 0; | |
582 | ||
583 | if (intel_state.op_modifier != O_absent | |
584 | && current_templates->start->base_opcode != 0x8d /* lea */) | |
585 | { | |
586 | i.types[this_operand].bitfield.unspecified = 0; | |
587 | ||
588 | switch (intel_state.op_modifier) | |
589 | { | |
590 | case O_byte_ptr: | |
591 | i.types[this_operand].bitfield.byte = 1; | |
592 | suffix = BYTE_MNEM_SUFFIX; | |
593 | break; | |
594 | ||
595 | case O_word_ptr: | |
596 | i.types[this_operand].bitfield.word = 1; | |
597 | if ((current_templates->start->name[0] == 'l' | |
598 | && current_templates->start->name[2] == 's' | |
599 | && current_templates->start->name[3] == 0) | |
600 | || current_templates->start->base_opcode == 0x62 /* bound */) | |
601 | suffix = BYTE_MNEM_SUFFIX; /* so it will cause an error */ | |
602 | else if (got_a_float == 2) /* "fi..." */ | |
603 | suffix = SHORT_MNEM_SUFFIX; | |
604 | else | |
605 | suffix = WORD_MNEM_SUFFIX; | |
606 | break; | |
607 | ||
608 | case O_dword_ptr: | |
609 | i.types[this_operand].bitfield.dword = 1; | |
610 | if ((current_templates->start->name[0] == 'l' | |
611 | && current_templates->start->name[2] == 's' | |
612 | && current_templates->start->name[3] == 0) | |
613 | || current_templates->start->base_opcode == 0x62 /* bound */) | |
614 | suffix = WORD_MNEM_SUFFIX; | |
615 | else if (flag_code == CODE_16BIT | |
616 | && (current_templates->start->opcode_modifier.jump | |
617 | || current_templates->start->opcode_modifier.jumpdword)) | |
618 | suffix = LONG_DOUBLE_MNEM_SUFFIX; | |
619 | else if (got_a_float == 1) /* "f..." */ | |
620 | suffix = SHORT_MNEM_SUFFIX; | |
621 | else | |
622 | suffix = LONG_MNEM_SUFFIX; | |
623 | break; | |
624 | ||
625 | case O_fword_ptr: | |
626 | i.types[this_operand].bitfield.fword = 1; | |
627 | if (current_templates->start->name[0] == 'l' | |
628 | && current_templates->start->name[2] == 's' | |
629 | && current_templates->start->name[3] == 0) | |
630 | suffix = LONG_MNEM_SUFFIX; | |
631 | else if (!got_a_float) | |
632 | { | |
633 | if (flag_code == CODE_16BIT) | |
634 | add_prefix (DATA_PREFIX_OPCODE); | |
635 | suffix = LONG_DOUBLE_MNEM_SUFFIX; | |
636 | } | |
637 | else | |
638 | suffix = BYTE_MNEM_SUFFIX; /* so it will cause an error */ | |
639 | break; | |
640 | ||
641 | case O_qword_ptr: | |
642 | i.types[this_operand].bitfield.qword = 1; | |
643 | if (current_templates->start->base_opcode == 0x62 /* bound */ | |
644 | || got_a_float == 1) /* "f..." */ | |
645 | suffix = LONG_MNEM_SUFFIX; | |
646 | else | |
647 | suffix = QWORD_MNEM_SUFFIX; | |
648 | break; | |
649 | ||
650 | case O_tbyte_ptr: | |
651 | i.types[this_operand].bitfield.tbyte = 1; | |
652 | if (got_a_float == 1) | |
653 | suffix = LONG_DOUBLE_MNEM_SUFFIX; | |
654 | else | |
655 | suffix = BYTE_MNEM_SUFFIX; /* so it will cause an error */ | |
656 | break; | |
657 | ||
658 | case O_oword_ptr: | |
659 | case O_xmmword_ptr: | |
660 | i.types[this_operand].bitfield.xmmword = 1; | |
661 | suffix = XMMWORD_MNEM_SUFFIX; | |
662 | break; | |
663 | ||
664 | case O_ymmword_ptr: | |
665 | i.types[this_operand].bitfield.ymmword = 1; | |
666 | suffix = YMMWORD_MNEM_SUFFIX; | |
667 | break; | |
668 | ||
669 | case O_far_ptr: | |
670 | suffix = LONG_DOUBLE_MNEM_SUFFIX; | |
671 | /* FALLTHROUGH */ | |
672 | case O_near_ptr: | |
673 | if (!current_templates->start->opcode_modifier.jump | |
674 | && !current_templates->start->opcode_modifier.jumpdword) | |
675 | suffix = got_a_float /* so it will cause an error */ | |
676 | ? BYTE_MNEM_SUFFIX | |
677 | : LONG_DOUBLE_MNEM_SUFFIX; | |
678 | break; | |
679 | ||
680 | default: | |
681 | BAD_CASE (intel_state.op_modifier); | |
682 | break; | |
683 | } | |
684 | ||
685 | if (!i.suffix) | |
686 | i.suffix = suffix; | |
687 | else if (i.suffix != suffix) | |
688 | { | |
689 | as_bad (_("conflicting operand size modifiers")); | |
690 | return 0; | |
691 | } | |
692 | } | |
693 | ||
694 | /* Operands for jump/call need special consideration. */ | |
695 | if (current_templates->start->opcode_modifier.jump | |
696 | || current_templates->start->opcode_modifier.jumpdword | |
697 | || current_templates->start->opcode_modifier.jumpintersegment) | |
698 | { | |
f09c1772 L |
699 | if (i.op[this_operand].regs |
700 | || intel_state.base | |
701 | || intel_state.index | |
ee86248c JB |
702 | || intel_state.is_mem > 1) |
703 | i.types[this_operand].bitfield.jumpabsolute = 1; | |
704 | else | |
705 | switch (intel_state.op_modifier) | |
706 | { | |
707 | case O_near_ptr: | |
708 | if (intel_state.seg) | |
709 | i.types[this_operand].bitfield.jumpabsolute = 1; | |
710 | else | |
711 | intel_state.is_mem = 1; | |
712 | break; | |
713 | case O_far_ptr: | |
714 | case O_absent: | |
715 | if (!intel_state.seg) | |
716 | { | |
717 | intel_state.is_mem = 1; | |
718 | if (intel_state.op_modifier == O_absent) | |
25303607 L |
719 | { |
720 | if (intel_state.is_indirect == 1) | |
721 | i.types[this_operand].bitfield.jumpabsolute = 1; | |
722 | break; | |
723 | } | |
ee86248c JB |
724 | as_bad (_("cannot infer the segment part of the operand")); |
725 | return 0; | |
726 | } | |
727 | else if (S_GET_SEGMENT (intel_state.seg) == reg_section) | |
728 | i.types[this_operand].bitfield.jumpabsolute = 1; | |
729 | else | |
730 | { | |
731 | i386_operand_type types; | |
732 | ||
733 | if (i.imm_operands >= MAX_IMMEDIATE_OPERANDS) | |
734 | { | |
735 | as_bad (_("at most %d immediate operands are allowed"), | |
736 | MAX_IMMEDIATE_OPERANDS); | |
737 | return 0; | |
738 | } | |
739 | expP = &im_expressions[i.imm_operands++]; | |
740 | memset (expP, 0, sizeof(*expP)); | |
741 | expP->X_op = O_symbol; | |
742 | expP->X_add_symbol = intel_state.seg; | |
743 | i.op[this_operand].imms = expP; | |
744 | ||
745 | resolve_expression (expP); | |
746 | operand_type_set (&types, ~0); | |
747 | if (!i386_finalize_immediate (S_GET_SEGMENT (intel_state.seg), | |
748 | expP, types, operand_string)) | |
749 | return 0; | |
750 | if (i.operands < MAX_OPERANDS) | |
751 | { | |
752 | this_operand = i.operands++; | |
753 | i.types[this_operand].bitfield.unspecified = 1; | |
754 | } | |
755 | if (suffix == LONG_DOUBLE_MNEM_SUFFIX) | |
756 | i.suffix = 0; | |
757 | intel_state.seg = NULL; | |
758 | intel_state.is_mem = 0; | |
759 | } | |
760 | break; | |
761 | default: | |
762 | i.types[this_operand].bitfield.jumpabsolute = 1; | |
763 | break; | |
764 | } | |
765 | if (i.types[this_operand].bitfield.jumpabsolute) | |
766 | intel_state.is_mem |= 1; | |
767 | } | |
768 | else if (intel_state.seg) | |
769 | intel_state.is_mem |= 1; | |
770 | ||
771 | if (i.op[this_operand].regs) | |
772 | { | |
773 | i386_operand_type temp; | |
774 | ||
775 | /* Register operand. */ | |
776 | if (intel_state.base || intel_state.index || intel_state.seg) | |
777 | { | |
778 | as_bad (_("invalid operand")); | |
779 | return 0; | |
780 | } | |
781 | ||
782 | temp = i.op[this_operand].regs->reg_type; | |
783 | temp.bitfield.baseindex = 0; | |
f09c1772 L |
784 | i.types[this_operand] = operand_type_or (i.types[this_operand], |
785 | temp); | |
ee86248c JB |
786 | i.types[this_operand].bitfield.unspecified = 0; |
787 | ++i.reg_operands; | |
788 | } | |
f09c1772 L |
789 | else if (intel_state.base |
790 | || intel_state.index | |
791 | || intel_state.seg | |
ee86248c JB |
792 | || intel_state.is_mem) |
793 | { | |
794 | /* Memory operand. */ | |
795 | if (i.mem_operands | |
796 | >= 2 - !current_templates->start->opcode_modifier.isstring) | |
797 | { | |
313c53d1 L |
798 | /* Handle |
799 | ||
800 | call 0x9090,0x90909090 | |
801 | lcall 0x9090,0x90909090 | |
802 | jmp 0x9090,0x90909090 | |
803 | ljmp 0x9090,0x90909090 | |
804 | */ | |
805 | ||
806 | if ((current_templates->start->opcode_modifier.jumpintersegment | |
807 | || current_templates->start->opcode_modifier.jumpdword | |
808 | || current_templates->start->opcode_modifier.jump) | |
809 | && this_operand == 1 | |
810 | && intel_state.seg == NULL | |
811 | && i.mem_operands == 1 | |
812 | && i.disp_operands == 1 | |
813 | && intel_state.op_modifier == O_absent) | |
814 | { | |
815 | /* Try to process the first operand as immediate, */ | |
816 | this_operand = 0; | |
817 | if (i386_finalize_immediate (exp_seg, i.op[0].imms, | |
818 | intel_state.reloc_types, | |
819 | NULL)) | |
820 | { | |
821 | this_operand = 1; | |
822 | expP = &im_expressions[0]; | |
823 | i.op[this_operand].imms = expP; | |
824 | *expP = exp; | |
825 | ||
826 | /* Try to process the second operand as immediate, */ | |
827 | if (i386_finalize_immediate (exp_seg, expP, | |
828 | intel_state.reloc_types, | |
829 | NULL)) | |
830 | { | |
831 | i.mem_operands = 0; | |
832 | i.disp_operands = 0; | |
833 | i.imm_operands = 2; | |
834 | i.types[0].bitfield.mem = 0; | |
835 | i.types[0].bitfield.disp16 = 0; | |
836 | i.types[0].bitfield.disp32 = 0; | |
837 | i.types[0].bitfield.disp32s = 0; | |
838 | return 1; | |
839 | } | |
840 | } | |
841 | } | |
842 | ||
ee86248c JB |
843 | as_bad (_("too many memory references for `%s'"), |
844 | current_templates->start->name); | |
845 | return 0; | |
846 | } | |
847 | ||
848 | expP = &disp_expressions[i.disp_operands]; | |
849 | memcpy (expP, &exp, sizeof(exp)); | |
850 | resolve_expression (expP); | |
851 | ||
f09c1772 L |
852 | if (expP->X_op != O_constant |
853 | || expP->X_add_number | |
854 | || (!intel_state.base | |
855 | && !intel_state.index)) | |
ee86248c JB |
856 | { |
857 | i.op[this_operand].disps = expP; | |
858 | i.disp_operands++; | |
859 | ||
860 | if (flag_code == CODE_64BIT) | |
861 | { | |
862 | i.types[this_operand].bitfield.disp32 = 1; | |
863 | if (!i.prefix[ADDR_PREFIX]) | |
864 | { | |
865 | i.types[this_operand].bitfield.disp64 = 1; | |
866 | i.types[this_operand].bitfield.disp32s = 1; | |
867 | } | |
868 | } | |
869 | else if (!i.prefix[ADDR_PREFIX] ^ (flag_code == CODE_16BIT)) | |
870 | i.types[this_operand].bitfield.disp32 = 1; | |
871 | else | |
872 | i.types[this_operand].bitfield.disp16 = 1; | |
873 | ||
874 | #if defined (OBJ_AOUT) || defined (OBJ_MAYBE_AOUT) | |
875 | /* | |
876 | * exp_seg is used only for verification in | |
877 | * i386_finalize_displacement, and we can end up seeing reg_section | |
878 | * here - but we know we removed all registers from the expression | |
879 | * (or error-ed on any remaining ones) in i386_intel_simplify. I | |
880 | * consider the check in i386_finalize_displacement bogus anyway, in | |
881 | * particular because it doesn't allow for expr_section, so I'd | |
882 | * rather see that check (and the similar one in | |
883 | * i386_finalize_immediate) use SEG_NORMAL(), but not being an a.out | |
884 | * expert I can't really say whether that would have other bad side | |
885 | * effects. | |
886 | */ | |
887 | if (OUTPUT_FLAVOR == bfd_target_aout_flavour | |
888 | && exp_seg == reg_section) | |
889 | exp_seg = expP->X_op != O_constant ? undefined_section | |
890 | : absolute_section; | |
891 | #endif | |
892 | ||
893 | if (!i386_finalize_displacement (exp_seg, expP, | |
894 | intel_state.reloc_types, | |
895 | operand_string)) | |
896 | return 0; | |
897 | } | |
898 | ||
899 | if (intel_state.base || intel_state.index) | |
900 | i.types[this_operand].bitfield.baseindex = 1; | |
901 | ||
902 | if (intel_state.seg) | |
903 | { | |
904 | for (;;) | |
905 | { | |
906 | expP = symbol_get_value_expression (intel_state.seg); | |
907 | if (expP->X_op != O_full_ptr) | |
908 | break; | |
909 | intel_state.seg = expP->X_add_symbol; | |
910 | } | |
0398aac5 | 911 | if (expP->X_op != O_register) |
ee86248c JB |
912 | { |
913 | as_bad (_("segment register name expected")); | |
914 | return 0; | |
915 | } | |
916 | if (!i386_regtab[expP->X_add_number].reg_type.bitfield.sreg2 | |
917 | && !i386_regtab[expP->X_add_number].reg_type.bitfield.sreg3) | |
918 | { | |
919 | as_bad (_("invalid use of register")); | |
920 | return 0; | |
921 | } | |
922 | switch (i386_regtab[expP->X_add_number].reg_num) | |
923 | { | |
924 | case 0: i.seg[i.mem_operands] = &es; break; | |
925 | case 1: i.seg[i.mem_operands] = &cs; break; | |
926 | case 2: i.seg[i.mem_operands] = &ss; break; | |
927 | case 3: i.seg[i.mem_operands] = &ds; break; | |
928 | case 4: i.seg[i.mem_operands] = &fs; break; | |
929 | case 5: i.seg[i.mem_operands] = &gs; break; | |
930 | case RegFlat: i.seg[i.mem_operands] = NULL; break; | |
931 | } | |
932 | } | |
933 | ||
934 | /* Swap base and index in 16-bit memory operands like | |
935 | [si+bx]. Since i386_index_check is also used in AT&T | |
936 | mode we have to do that here. */ | |
937 | if (intel_state.base | |
938 | && intel_state.index | |
939 | && intel_state.base->reg_type.bitfield.reg16 | |
940 | && intel_state.index->reg_type.bitfield.reg16 | |
941 | && intel_state.base->reg_num >= 6 | |
942 | && intel_state.index->reg_num < 6) | |
943 | { | |
944 | i.base_reg = intel_state.index; | |
945 | i.index_reg = intel_state.base; | |
946 | } | |
947 | else | |
948 | { | |
949 | i.base_reg = intel_state.base; | |
950 | i.index_reg = intel_state.index; | |
951 | } | |
952 | ||
953 | if (!i386_index_check (operand_string)) | |
954 | return 0; | |
955 | ||
956 | i.types[this_operand].bitfield.mem = 1; | |
957 | ++i.mem_operands; | |
958 | } | |
959 | else | |
960 | { | |
961 | /* Immediate. */ | |
962 | if (i.imm_operands >= MAX_IMMEDIATE_OPERANDS) | |
963 | { | |
964 | as_bad (_("at most %d immediate operands are allowed"), | |
965 | MAX_IMMEDIATE_OPERANDS); | |
966 | return 0; | |
967 | } | |
968 | ||
969 | expP = &im_expressions[i.imm_operands++]; | |
970 | i.op[this_operand].imms = expP; | |
971 | *expP = exp; | |
972 | ||
973 | return i386_finalize_immediate (exp_seg, expP, intel_state.reloc_types, | |
974 | operand_string); | |
975 | } | |
976 | ||
977 | return 1; | |
978 | } |