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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 | } | |
281 | else if (!intel_state.base && !intel_state.in_scale) | |
282 | intel_state.base = i386_regtab + reg_num; | |
283 | else if (!intel_state.index) | |
284 | intel_state.index = i386_regtab + reg_num; | |
285 | else | |
286 | { | |
287 | /* esp is invalid as index */ | |
288 | intel_state.index = i386_regtab + REGNAM_EAX + 4; | |
289 | } | |
290 | return 2; | |
291 | } | |
292 | ||
ee86248c JB |
293 | static int i386_intel_simplify (expressionS *); |
294 | ||
295 | static INLINE int i386_intel_simplify_symbol(symbolS *sym) | |
296 | { | |
297 | int ret = i386_intel_simplify (symbol_get_value_expression (sym)); | |
298 | ||
299 | if (ret == 2) | |
300 | { | |
301 | S_SET_SEGMENT(sym, absolute_section); | |
302 | ret = 1; | |
303 | } | |
304 | return ret; | |
305 | } | |
306 | ||
307 | static int i386_intel_simplify (expressionS *e) | |
308 | { | |
f09c1772 L |
309 | const reg_entry *the_reg = (this_operand >= 0 |
310 | ? i.op[this_operand].regs : NULL); | |
ee86248c | 311 | const reg_entry *base = intel_state.base; |
91d6fa6a | 312 | const reg_entry *state_index = intel_state.index; |
ee86248c JB |
313 | int ret; |
314 | ||
315 | if (!intel_syntax) | |
316 | return 1; | |
317 | ||
318 | switch (e->X_op) | |
319 | { | |
320 | case O_index: | |
321 | if (e->X_add_symbol) | |
322 | { | |
323 | if (!i386_intel_simplify_symbol (e->X_add_symbol) | |
f09c1772 L |
324 | || !i386_intel_check(the_reg, intel_state.base, |
325 | intel_state.index)) | |
ee86248c JB |
326 | return 0;; |
327 | } | |
328 | if (!intel_state.in_offset) | |
329 | ++intel_state.in_bracket; | |
330 | ret = i386_intel_simplify_symbol (e->X_op_symbol); | |
331 | if (!intel_state.in_offset) | |
332 | --intel_state.in_bracket; | |
333 | if (!ret) | |
334 | return 0; | |
335 | if (e->X_add_symbol) | |
336 | e->X_op = O_add; | |
337 | else | |
338 | i386_intel_fold (e, e->X_op_symbol); | |
339 | break; | |
340 | ||
341 | case O_offset: | |
6cee4cda | 342 | intel_state.has_offset = 1; |
ee86248c JB |
343 | ++intel_state.in_offset; |
344 | ret = i386_intel_simplify_symbol (e->X_add_symbol); | |
345 | --intel_state.in_offset; | |
91d6fa6a | 346 | if (!ret || !i386_intel_check(the_reg, base, state_index)) |
ee86248c JB |
347 | return 0; |
348 | i386_intel_fold (e, e->X_add_symbol); | |
349 | return ret; | |
350 | ||
351 | case O_byte_ptr: | |
352 | case O_word_ptr: | |
353 | case O_dword_ptr: | |
354 | case O_fword_ptr: | |
355 | case O_qword_ptr: | |
356 | case O_tbyte_ptr: | |
357 | case O_oword_ptr: | |
358 | case O_xmmword_ptr: | |
359 | case O_ymmword_ptr: | |
360 | case O_near_ptr: | |
361 | case O_far_ptr: | |
362 | if (intel_state.op_modifier == O_absent) | |
363 | intel_state.op_modifier = e->X_op; | |
364 | /* FALLTHROUGH */ | |
365 | case O_short: | |
f09c1772 L |
366 | if (symbol_get_value_expression (e->X_add_symbol)->X_op |
367 | == O_register) | |
ee86248c JB |
368 | { |
369 | as_bad (_("invalid use of register")); | |
370 | return 0; | |
371 | } | |
372 | if (!i386_intel_simplify_symbol (e->X_add_symbol)) | |
373 | return 0; | |
374 | i386_intel_fold (e, e->X_add_symbol); | |
375 | break; | |
376 | ||
377 | case O_full_ptr: | |
f09c1772 L |
378 | if (symbol_get_value_expression (e->X_op_symbol)->X_op |
379 | == O_register) | |
ee86248c JB |
380 | { |
381 | as_bad (_("invalid use of register")); | |
382 | return 0; | |
383 | } | |
384 | if (!i386_intel_simplify_symbol (e->X_op_symbol) | |
f09c1772 L |
385 | || !i386_intel_check(the_reg, intel_state.base, |
386 | intel_state.index)) | |
ee86248c JB |
387 | return 0; |
388 | if (!intel_state.in_offset) | |
389 | intel_state.seg = e->X_add_symbol; | |
390 | i386_intel_fold (e, e->X_op_symbol); | |
391 | break; | |
392 | ||
ee86248c JB |
393 | case O_multiply: |
394 | if (this_operand >= 0 && intel_state.in_bracket) | |
395 | { | |
396 | expressionS *scale = NULL; | |
397 | ||
398 | if (intel_state.index) | |
399 | --scale; | |
400 | ||
401 | if (!intel_state.in_scale++) | |
402 | intel_state.scale_factor = 1; | |
403 | ||
404 | ret = i386_intel_simplify_symbol (e->X_add_symbol); | |
405 | if (ret && !scale && intel_state.index) | |
406 | scale = symbol_get_value_expression (e->X_op_symbol); | |
407 | ||
408 | if (ret) | |
409 | ret = i386_intel_simplify_symbol (e->X_op_symbol); | |
410 | if (ret && !scale && intel_state.index) | |
411 | scale = symbol_get_value_expression (e->X_add_symbol); | |
412 | ||
413 | if (ret && scale && (scale + 1)) | |
414 | { | |
415 | resolve_expression (scale); | |
416 | if (scale->X_op != O_constant | |
417 | || intel_state.index->reg_type.bitfield.reg16) | |
418 | scale->X_add_number = 0; | |
419 | intel_state.scale_factor *= scale->X_add_number; | |
420 | } | |
421 | ||
422 | --intel_state.in_scale; | |
423 | if (!ret) | |
424 | return 0; | |
425 | ||
426 | if (!intel_state.in_scale) | |
427 | switch (intel_state.scale_factor) | |
428 | { | |
429 | case 1: | |
430 | i.log2_scale_factor = 0; | |
431 | break; | |
432 | case 2: | |
433 | i.log2_scale_factor = 1; | |
434 | break; | |
435 | case 4: | |
436 | i.log2_scale_factor = 2; | |
437 | break; | |
438 | case 8: | |
439 | i.log2_scale_factor = 3; | |
440 | break; | |
441 | default: | |
442 | /* esp is invalid as index */ | |
443 | intel_state.index = i386_regtab + REGNAM_EAX + 4; | |
444 | break; | |
445 | } | |
446 | ||
447 | break; | |
448 | } | |
92b4f90c | 449 | goto fallthrough; |
3c7b9c2c L |
450 | |
451 | case O_register: | |
452 | ret = i386_intel_simplify_register (e); | |
453 | if (ret == 2) | |
454 | { | |
455 | gas_assert (e->X_add_number < (unsigned short) -1); | |
456 | e->X_md = (unsigned short) e->X_add_number + 1; | |
457 | e->X_op = O_constant; | |
458 | e->X_add_number = 0; | |
459 | } | |
460 | return ret; | |
461 | ||
462 | case O_constant: | |
463 | if (e->X_md) | |
464 | return i386_intel_simplify_register (e); | |
465 | ||
ee86248c JB |
466 | /* FALLTHROUGH */ |
467 | default: | |
92b4f90c | 468 | fallthrough: |
f09c1772 L |
469 | if (e->X_add_symbol |
470 | && !i386_intel_simplify_symbol (e->X_add_symbol)) | |
ee86248c JB |
471 | return 0; |
472 | if (e->X_op == O_add || e->X_op == O_subtract) | |
473 | { | |
474 | base = intel_state.base; | |
91d6fa6a | 475 | state_index = intel_state.index; |
ee86248c | 476 | } |
91d6fa6a | 477 | if (!i386_intel_check (the_reg, base, state_index) |
f09c1772 L |
478 | || (e->X_op_symbol |
479 | && !i386_intel_simplify_symbol (e->X_op_symbol)) | |
91d6fa6a | 480 | || !i386_intel_check (the_reg, |
f09c1772 L |
481 | (e->X_op != O_add |
482 | ? base : intel_state.base), | |
483 | (e->X_op != O_add | |
484 | ? state_index : intel_state.index))) | |
ee86248c JB |
485 | return 0; |
486 | break; | |
487 | } | |
488 | ||
f09c1772 L |
489 | if (this_operand >= 0 |
490 | && e->X_op == O_symbol | |
491 | && !intel_state.in_offset) | |
ee86248c JB |
492 | { |
493 | segT seg = S_GET_SEGMENT (e->X_add_symbol); | |
494 | ||
495 | if (seg != absolute_section | |
496 | && seg != reg_section | |
497 | && seg != expr_section) | |
498 | intel_state.is_mem |= 2 - !intel_state.in_bracket; | |
499 | } | |
500 | ||
501 | return 1; | |
502 | } | |
503 | ||
504 | int i386_need_index_operator (void) | |
505 | { | |
506 | return intel_syntax < 0; | |
507 | } | |
508 | ||
509 | static int | |
510 | i386_intel_operand (char *operand_string, int got_a_float) | |
511 | { | |
512 | char *saved_input_line_pointer, *buf; | |
513 | segT exp_seg; | |
514 | expressionS exp, *expP; | |
515 | char suffix = 0; | |
516 | int ret; | |
517 | ||
518 | /* Initialize state structure. */ | |
519 | intel_state.op_modifier = O_absent; | |
520 | intel_state.is_mem = 0; | |
25303607 | 521 | intel_state.is_indirect = 0; |
1acf546e | 522 | intel_state.has_offset = 0; |
ee86248c JB |
523 | intel_state.base = NULL; |
524 | intel_state.index = NULL; | |
525 | intel_state.seg = NULL; | |
526 | operand_type_set (&intel_state.reloc_types, ~0); | |
9c2799c2 NC |
527 | gas_assert (!intel_state.in_offset); |
528 | gas_assert (!intel_state.in_bracket); | |
529 | gas_assert (!intel_state.in_scale); | |
ee86248c JB |
530 | |
531 | saved_input_line_pointer = input_line_pointer; | |
532 | input_line_pointer = buf = xstrdup (operand_string); | |
533 | ||
534 | intel_syntax = -1; | |
535 | memset (&exp, 0, sizeof(exp)); | |
536 | exp_seg = expression (&exp); | |
537 | ret = i386_intel_simplify (&exp); | |
538 | intel_syntax = 1; | |
539 | ||
540 | SKIP_WHITESPACE (); | |
541 | if (!is_end_of_line[(unsigned char) *input_line_pointer]) | |
542 | { | |
543 | as_bad (_("junk `%s' after expression"), input_line_pointer); | |
544 | ret = 0; | |
545 | } | |
546 | else if (exp.X_op == O_illegal || exp.X_op == O_absent) | |
547 | { | |
548 | as_bad (_("invalid expression")); | |
549 | ret = 0; | |
550 | } | |
6cee4cda L |
551 | else if (!intel_state.has_offset |
552 | && input_line_pointer > buf | |
553 | && *(input_line_pointer - 1) == ']') | |
25303607 L |
554 | { |
555 | intel_state.is_mem |= 1; | |
556 | intel_state.is_indirect = 1; | |
557 | } | |
ee86248c JB |
558 | |
559 | input_line_pointer = saved_input_line_pointer; | |
560 | free (buf); | |
561 | ||
9c2799c2 NC |
562 | gas_assert (!intel_state.in_offset); |
563 | gas_assert (!intel_state.in_bracket); | |
564 | gas_assert (!intel_state.in_scale); | |
ee86248c JB |
565 | |
566 | if (!ret) | |
567 | return 0; | |
568 | ||
569 | if (intel_state.op_modifier != O_absent | |
570 | && current_templates->start->base_opcode != 0x8d /* lea */) | |
571 | { | |
572 | i.types[this_operand].bitfield.unspecified = 0; | |
573 | ||
574 | switch (intel_state.op_modifier) | |
575 | { | |
576 | case O_byte_ptr: | |
577 | i.types[this_operand].bitfield.byte = 1; | |
578 | suffix = BYTE_MNEM_SUFFIX; | |
579 | break; | |
580 | ||
581 | case O_word_ptr: | |
582 | i.types[this_operand].bitfield.word = 1; | |
583 | if ((current_templates->start->name[0] == 'l' | |
584 | && current_templates->start->name[2] == 's' | |
585 | && current_templates->start->name[3] == 0) | |
586 | || current_templates->start->base_opcode == 0x62 /* bound */) | |
587 | suffix = BYTE_MNEM_SUFFIX; /* so it will cause an error */ | |
588 | else if (got_a_float == 2) /* "fi..." */ | |
589 | suffix = SHORT_MNEM_SUFFIX; | |
590 | else | |
591 | suffix = WORD_MNEM_SUFFIX; | |
592 | break; | |
593 | ||
594 | case O_dword_ptr: | |
595 | i.types[this_operand].bitfield.dword = 1; | |
596 | if ((current_templates->start->name[0] == 'l' | |
597 | && current_templates->start->name[2] == 's' | |
598 | && current_templates->start->name[3] == 0) | |
599 | || current_templates->start->base_opcode == 0x62 /* bound */) | |
600 | suffix = WORD_MNEM_SUFFIX; | |
601 | else if (flag_code == CODE_16BIT | |
602 | && (current_templates->start->opcode_modifier.jump | |
603 | || current_templates->start->opcode_modifier.jumpdword)) | |
604 | suffix = LONG_DOUBLE_MNEM_SUFFIX; | |
605 | else if (got_a_float == 1) /* "f..." */ | |
606 | suffix = SHORT_MNEM_SUFFIX; | |
607 | else | |
608 | suffix = LONG_MNEM_SUFFIX; | |
609 | break; | |
610 | ||
611 | case O_fword_ptr: | |
612 | i.types[this_operand].bitfield.fword = 1; | |
613 | if (current_templates->start->name[0] == 'l' | |
614 | && current_templates->start->name[2] == 's' | |
615 | && current_templates->start->name[3] == 0) | |
616 | suffix = LONG_MNEM_SUFFIX; | |
617 | else if (!got_a_float) | |
618 | { | |
619 | if (flag_code == CODE_16BIT) | |
620 | add_prefix (DATA_PREFIX_OPCODE); | |
621 | suffix = LONG_DOUBLE_MNEM_SUFFIX; | |
622 | } | |
623 | else | |
624 | suffix = BYTE_MNEM_SUFFIX; /* so it will cause an error */ | |
625 | break; | |
626 | ||
627 | case O_qword_ptr: | |
628 | i.types[this_operand].bitfield.qword = 1; | |
629 | if (current_templates->start->base_opcode == 0x62 /* bound */ | |
630 | || got_a_float == 1) /* "f..." */ | |
631 | suffix = LONG_MNEM_SUFFIX; | |
632 | else | |
633 | suffix = QWORD_MNEM_SUFFIX; | |
634 | break; | |
635 | ||
636 | case O_tbyte_ptr: | |
637 | i.types[this_operand].bitfield.tbyte = 1; | |
638 | if (got_a_float == 1) | |
639 | suffix = LONG_DOUBLE_MNEM_SUFFIX; | |
640 | else | |
641 | suffix = BYTE_MNEM_SUFFIX; /* so it will cause an error */ | |
642 | break; | |
643 | ||
644 | case O_oword_ptr: | |
645 | case O_xmmword_ptr: | |
646 | i.types[this_operand].bitfield.xmmword = 1; | |
647 | suffix = XMMWORD_MNEM_SUFFIX; | |
648 | break; | |
649 | ||
650 | case O_ymmword_ptr: | |
651 | i.types[this_operand].bitfield.ymmword = 1; | |
652 | suffix = YMMWORD_MNEM_SUFFIX; | |
653 | break; | |
654 | ||
655 | case O_far_ptr: | |
656 | suffix = LONG_DOUBLE_MNEM_SUFFIX; | |
657 | /* FALLTHROUGH */ | |
658 | case O_near_ptr: | |
659 | if (!current_templates->start->opcode_modifier.jump | |
660 | && !current_templates->start->opcode_modifier.jumpdword) | |
661 | suffix = got_a_float /* so it will cause an error */ | |
662 | ? BYTE_MNEM_SUFFIX | |
663 | : LONG_DOUBLE_MNEM_SUFFIX; | |
664 | break; | |
665 | ||
666 | default: | |
667 | BAD_CASE (intel_state.op_modifier); | |
668 | break; | |
669 | } | |
670 | ||
671 | if (!i.suffix) | |
672 | i.suffix = suffix; | |
673 | else if (i.suffix != suffix) | |
674 | { | |
675 | as_bad (_("conflicting operand size modifiers")); | |
676 | return 0; | |
677 | } | |
678 | } | |
679 | ||
680 | /* Operands for jump/call need special consideration. */ | |
681 | if (current_templates->start->opcode_modifier.jump | |
682 | || current_templates->start->opcode_modifier.jumpdword | |
683 | || current_templates->start->opcode_modifier.jumpintersegment) | |
684 | { | |
f09c1772 L |
685 | if (i.op[this_operand].regs |
686 | || intel_state.base | |
687 | || intel_state.index | |
ee86248c JB |
688 | || intel_state.is_mem > 1) |
689 | i.types[this_operand].bitfield.jumpabsolute = 1; | |
690 | else | |
691 | switch (intel_state.op_modifier) | |
692 | { | |
693 | case O_near_ptr: | |
694 | if (intel_state.seg) | |
695 | i.types[this_operand].bitfield.jumpabsolute = 1; | |
696 | else | |
697 | intel_state.is_mem = 1; | |
698 | break; | |
699 | case O_far_ptr: | |
700 | case O_absent: | |
701 | if (!intel_state.seg) | |
702 | { | |
703 | intel_state.is_mem = 1; | |
704 | if (intel_state.op_modifier == O_absent) | |
25303607 L |
705 | { |
706 | if (intel_state.is_indirect == 1) | |
707 | i.types[this_operand].bitfield.jumpabsolute = 1; | |
708 | break; | |
709 | } | |
ee86248c JB |
710 | as_bad (_("cannot infer the segment part of the operand")); |
711 | return 0; | |
712 | } | |
713 | else if (S_GET_SEGMENT (intel_state.seg) == reg_section) | |
714 | i.types[this_operand].bitfield.jumpabsolute = 1; | |
715 | else | |
716 | { | |
717 | i386_operand_type types; | |
718 | ||
719 | if (i.imm_operands >= MAX_IMMEDIATE_OPERANDS) | |
720 | { | |
721 | as_bad (_("at most %d immediate operands are allowed"), | |
722 | MAX_IMMEDIATE_OPERANDS); | |
723 | return 0; | |
724 | } | |
725 | expP = &im_expressions[i.imm_operands++]; | |
726 | memset (expP, 0, sizeof(*expP)); | |
727 | expP->X_op = O_symbol; | |
728 | expP->X_add_symbol = intel_state.seg; | |
729 | i.op[this_operand].imms = expP; | |
730 | ||
731 | resolve_expression (expP); | |
732 | operand_type_set (&types, ~0); | |
733 | if (!i386_finalize_immediate (S_GET_SEGMENT (intel_state.seg), | |
734 | expP, types, operand_string)) | |
735 | return 0; | |
736 | if (i.operands < MAX_OPERANDS) | |
737 | { | |
738 | this_operand = i.operands++; | |
739 | i.types[this_operand].bitfield.unspecified = 1; | |
740 | } | |
741 | if (suffix == LONG_DOUBLE_MNEM_SUFFIX) | |
742 | i.suffix = 0; | |
743 | intel_state.seg = NULL; | |
744 | intel_state.is_mem = 0; | |
745 | } | |
746 | break; | |
747 | default: | |
748 | i.types[this_operand].bitfield.jumpabsolute = 1; | |
749 | break; | |
750 | } | |
751 | if (i.types[this_operand].bitfield.jumpabsolute) | |
752 | intel_state.is_mem |= 1; | |
753 | } | |
754 | else if (intel_state.seg) | |
755 | intel_state.is_mem |= 1; | |
756 | ||
757 | if (i.op[this_operand].regs) | |
758 | { | |
759 | i386_operand_type temp; | |
760 | ||
761 | /* Register operand. */ | |
762 | if (intel_state.base || intel_state.index || intel_state.seg) | |
763 | { | |
764 | as_bad (_("invalid operand")); | |
765 | return 0; | |
766 | } | |
767 | ||
768 | temp = i.op[this_operand].regs->reg_type; | |
769 | temp.bitfield.baseindex = 0; | |
f09c1772 L |
770 | i.types[this_operand] = operand_type_or (i.types[this_operand], |
771 | temp); | |
ee86248c JB |
772 | i.types[this_operand].bitfield.unspecified = 0; |
773 | ++i.reg_operands; | |
774 | } | |
f09c1772 L |
775 | else if (intel_state.base |
776 | || intel_state.index | |
777 | || intel_state.seg | |
ee86248c JB |
778 | || intel_state.is_mem) |
779 | { | |
780 | /* Memory operand. */ | |
781 | if (i.mem_operands | |
782 | >= 2 - !current_templates->start->opcode_modifier.isstring) | |
783 | { | |
313c53d1 L |
784 | /* Handle |
785 | ||
786 | call 0x9090,0x90909090 | |
787 | lcall 0x9090,0x90909090 | |
788 | jmp 0x9090,0x90909090 | |
789 | ljmp 0x9090,0x90909090 | |
790 | */ | |
791 | ||
792 | if ((current_templates->start->opcode_modifier.jumpintersegment | |
793 | || current_templates->start->opcode_modifier.jumpdword | |
794 | || current_templates->start->opcode_modifier.jump) | |
795 | && this_operand == 1 | |
796 | && intel_state.seg == NULL | |
797 | && i.mem_operands == 1 | |
798 | && i.disp_operands == 1 | |
799 | && intel_state.op_modifier == O_absent) | |
800 | { | |
801 | /* Try to process the first operand as immediate, */ | |
802 | this_operand = 0; | |
803 | if (i386_finalize_immediate (exp_seg, i.op[0].imms, | |
804 | intel_state.reloc_types, | |
805 | NULL)) | |
806 | { | |
807 | this_operand = 1; | |
808 | expP = &im_expressions[0]; | |
809 | i.op[this_operand].imms = expP; | |
810 | *expP = exp; | |
811 | ||
812 | /* Try to process the second operand as immediate, */ | |
813 | if (i386_finalize_immediate (exp_seg, expP, | |
814 | intel_state.reloc_types, | |
815 | NULL)) | |
816 | { | |
817 | i.mem_operands = 0; | |
818 | i.disp_operands = 0; | |
819 | i.imm_operands = 2; | |
820 | i.types[0].bitfield.mem = 0; | |
821 | i.types[0].bitfield.disp16 = 0; | |
822 | i.types[0].bitfield.disp32 = 0; | |
823 | i.types[0].bitfield.disp32s = 0; | |
824 | return 1; | |
825 | } | |
826 | } | |
827 | } | |
828 | ||
ee86248c JB |
829 | as_bad (_("too many memory references for `%s'"), |
830 | current_templates->start->name); | |
831 | return 0; | |
832 | } | |
833 | ||
834 | expP = &disp_expressions[i.disp_operands]; | |
835 | memcpy (expP, &exp, sizeof(exp)); | |
836 | resolve_expression (expP); | |
837 | ||
f09c1772 L |
838 | if (expP->X_op != O_constant |
839 | || expP->X_add_number | |
840 | || (!intel_state.base | |
841 | && !intel_state.index)) | |
ee86248c JB |
842 | { |
843 | i.op[this_operand].disps = expP; | |
844 | i.disp_operands++; | |
845 | ||
846 | if (flag_code == CODE_64BIT) | |
847 | { | |
848 | i.types[this_operand].bitfield.disp32 = 1; | |
849 | if (!i.prefix[ADDR_PREFIX]) | |
850 | { | |
851 | i.types[this_operand].bitfield.disp64 = 1; | |
852 | i.types[this_operand].bitfield.disp32s = 1; | |
853 | } | |
854 | } | |
855 | else if (!i.prefix[ADDR_PREFIX] ^ (flag_code == CODE_16BIT)) | |
856 | i.types[this_operand].bitfield.disp32 = 1; | |
857 | else | |
858 | i.types[this_operand].bitfield.disp16 = 1; | |
859 | ||
860 | #if defined (OBJ_AOUT) || defined (OBJ_MAYBE_AOUT) | |
861 | /* | |
862 | * exp_seg is used only for verification in | |
863 | * i386_finalize_displacement, and we can end up seeing reg_section | |
864 | * here - but we know we removed all registers from the expression | |
865 | * (or error-ed on any remaining ones) in i386_intel_simplify. I | |
866 | * consider the check in i386_finalize_displacement bogus anyway, in | |
867 | * particular because it doesn't allow for expr_section, so I'd | |
868 | * rather see that check (and the similar one in | |
869 | * i386_finalize_immediate) use SEG_NORMAL(), but not being an a.out | |
870 | * expert I can't really say whether that would have other bad side | |
871 | * effects. | |
872 | */ | |
873 | if (OUTPUT_FLAVOR == bfd_target_aout_flavour | |
874 | && exp_seg == reg_section) | |
875 | exp_seg = expP->X_op != O_constant ? undefined_section | |
876 | : absolute_section; | |
877 | #endif | |
878 | ||
879 | if (!i386_finalize_displacement (exp_seg, expP, | |
880 | intel_state.reloc_types, | |
881 | operand_string)) | |
882 | return 0; | |
883 | } | |
884 | ||
885 | if (intel_state.base || intel_state.index) | |
886 | i.types[this_operand].bitfield.baseindex = 1; | |
887 | ||
888 | if (intel_state.seg) | |
889 | { | |
890 | for (;;) | |
891 | { | |
892 | expP = symbol_get_value_expression (intel_state.seg); | |
893 | if (expP->X_op != O_full_ptr) | |
894 | break; | |
895 | intel_state.seg = expP->X_add_symbol; | |
896 | } | |
0398aac5 | 897 | if (expP->X_op != O_register) |
ee86248c JB |
898 | { |
899 | as_bad (_("segment register name expected")); | |
900 | return 0; | |
901 | } | |
902 | if (!i386_regtab[expP->X_add_number].reg_type.bitfield.sreg2 | |
903 | && !i386_regtab[expP->X_add_number].reg_type.bitfield.sreg3) | |
904 | { | |
905 | as_bad (_("invalid use of register")); | |
906 | return 0; | |
907 | } | |
908 | switch (i386_regtab[expP->X_add_number].reg_num) | |
909 | { | |
910 | case 0: i.seg[i.mem_operands] = &es; break; | |
911 | case 1: i.seg[i.mem_operands] = &cs; break; | |
912 | case 2: i.seg[i.mem_operands] = &ss; break; | |
913 | case 3: i.seg[i.mem_operands] = &ds; break; | |
914 | case 4: i.seg[i.mem_operands] = &fs; break; | |
915 | case 5: i.seg[i.mem_operands] = &gs; break; | |
916 | case RegFlat: i.seg[i.mem_operands] = NULL; break; | |
917 | } | |
918 | } | |
919 | ||
920 | /* Swap base and index in 16-bit memory operands like | |
921 | [si+bx]. Since i386_index_check is also used in AT&T | |
922 | mode we have to do that here. */ | |
923 | if (intel_state.base | |
924 | && intel_state.index | |
925 | && intel_state.base->reg_type.bitfield.reg16 | |
926 | && intel_state.index->reg_type.bitfield.reg16 | |
927 | && intel_state.base->reg_num >= 6 | |
928 | && intel_state.index->reg_num < 6) | |
929 | { | |
930 | i.base_reg = intel_state.index; | |
931 | i.index_reg = intel_state.base; | |
932 | } | |
933 | else | |
934 | { | |
935 | i.base_reg = intel_state.base; | |
936 | i.index_reg = intel_state.index; | |
937 | } | |
938 | ||
939 | if (!i386_index_check (operand_string)) | |
940 | return 0; | |
941 | ||
942 | i.types[this_operand].bitfield.mem = 1; | |
943 | ++i.mem_operands; | |
944 | } | |
945 | else | |
946 | { | |
947 | /* Immediate. */ | |
948 | if (i.imm_operands >= MAX_IMMEDIATE_OPERANDS) | |
949 | { | |
950 | as_bad (_("at most %d immediate operands are allowed"), | |
951 | MAX_IMMEDIATE_OPERANDS); | |
952 | return 0; | |
953 | } | |
954 | ||
955 | expP = &im_expressions[i.imm_operands++]; | |
956 | i.op[this_operand].imms = expP; | |
957 | *expP = exp; | |
958 | ||
959 | return i386_finalize_immediate (exp_seg, expP, intel_state.reloc_types, | |
960 | operand_string); | |
961 | } | |
962 | ||
963 | return 1; | |
964 | } |