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ee86248c | 1 | /* tc-i386.c -- Assemble Intel syntax code for ix86/x86-64 |
82704155 | 2 | Copyright (C) 2009-2019 Free Software Foundation, Inc. |
ee86248c JB |
3 | |
4 | This file is part of GAS, the GNU Assembler. | |
5 | ||
6 | GAS is free software; you can redistribute it and/or modify | |
7 | it under the terms of the GNU General Public License as published by | |
8 | the Free Software Foundation; either version 3, or (at your option) | |
9 | any later version. | |
10 | ||
11 | GAS is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
17 | along with GAS; see the file COPYING. If not, write to the Free | |
18 | Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA | |
19 | 02110-1301, USA. */ | |
20 | ||
21 | static struct | |
22 | { | |
23 | operatorT op_modifier; /* Operand modifier. */ | |
24 | int is_mem; /* 1 if operand is memory reference. */ | |
25303607 | 25 | int is_indirect; /* 1 if operand is indirect reference. */ |
6cee4cda | 26 | int has_offset; /* 1 if operand has offset. */ |
ee86248c JB |
27 | unsigned int in_offset; /* >=1 if processing operand of offset. */ |
28 | unsigned int in_bracket; /* >=1 if processing operand in brackets. */ | |
33eaf5de | 29 | unsigned int in_scale; /* >=1 if processing multiplication operand |
ee86248c JB |
30 | * in brackets. */ |
31 | i386_operand_type reloc_types; /* Value obtained from lex_got(). */ | |
32 | const reg_entry *base; /* Base register (if any). */ | |
33 | const reg_entry *index; /* Index register (if any). */ | |
34 | offsetT scale_factor; /* Accumulated scale factor. */ | |
35 | symbolS *seg; | |
36 | } | |
37 | intel_state; | |
38 | ||
39 | /* offset X_add_symbol */ | |
40 | #define O_offset O_md32 | |
7ac3eb25 L |
41 | /* offset X_add_symbol */ |
42 | #define O_short O_md31 | |
43 | /* near ptr X_add_symbol */ | |
44 | #define O_near_ptr O_md30 | |
45 | /* far ptr X_add_symbol */ | |
46 | #define O_far_ptr O_md29 | |
ee86248c | 47 | /* byte ptr X_add_symbol */ |
7ac3eb25 | 48 | #define O_byte_ptr O_md28 |
ee86248c | 49 | /* word ptr X_add_symbol */ |
7ac3eb25 | 50 | #define O_word_ptr O_md27 |
ee86248c | 51 | /* dword ptr X_add_symbol */ |
7ac3eb25 | 52 | #define O_dword_ptr O_md26 |
ee86248c | 53 | /* qword ptr X_add_symbol */ |
7ac3eb25 | 54 | #define O_qword_ptr O_md25 |
ee86248c | 55 | /* oword ptr X_add_symbol */ |
7ac3eb25 | 56 | #define O_oword_ptr O_md24 |
ee86248c | 57 | /* fword ptr X_add_symbol */ |
7ac3eb25 | 58 | #define O_fword_ptr O_md23 |
ee86248c | 59 | /* tbyte ptr X_add_symbol */ |
7ac3eb25 | 60 | #define O_tbyte_ptr O_md22 |
ee86248c | 61 | /* xmmword ptr X_add_symbol */ |
7ac3eb25 | 62 | #define O_xmmword_ptr O_md21 |
ee86248c | 63 | /* ymmword ptr X_add_symbol */ |
7ac3eb25 | 64 | #define O_ymmword_ptr O_md20 |
43234a1e L |
65 | /* zmmword ptr X_add_symbol */ |
66 | #define O_zmmword_ptr O_md19 | |
ee86248c JB |
67 | |
68 | static struct | |
69 | { | |
70 | const char *name; | |
1e9cc1c2 | 71 | operatorT op; |
ee86248c JB |
72 | unsigned int operands; |
73 | } | |
74 | const i386_operators[] = | |
75 | { | |
76 | { "and", O_bit_and, 2 }, | |
77 | { "eq", O_eq, 2 }, | |
78 | { "ge", O_ge, 2 }, | |
79 | { "gt", O_gt, 2 }, | |
80 | { "le", O_le, 2 }, | |
81 | { "lt", O_lt, 2 }, | |
82 | { "mod", O_modulus, 2 }, | |
83 | { "ne", O_ne, 2 }, | |
84 | { "not", O_bit_not, 1 }, | |
85 | { "offset", O_offset, 1 }, | |
86 | { "or", O_bit_inclusive_or, 2 }, | |
87 | { "shl", O_left_shift, 2 }, | |
88 | { "short", O_short, 1 }, | |
89 | { "shr", O_right_shift, 2 }, | |
90 | { "xor", O_bit_exclusive_or, 2 }, | |
91 | { NULL, O_illegal, 0 } | |
92 | }; | |
93 | ||
94 | static struct | |
95 | { | |
96 | const char *name; | |
1e9cc1c2 | 97 | operatorT op; |
ee86248c JB |
98 | unsigned short sz[3]; |
99 | } | |
100 | const i386_types[] = | |
101 | { | |
102 | #define I386_TYPE(t, n) { #t, O_##t##_ptr, { n, n, n } } | |
103 | I386_TYPE(byte, 1), | |
104 | I386_TYPE(word, 2), | |
105 | I386_TYPE(dword, 4), | |
106 | I386_TYPE(fword, 6), | |
107 | I386_TYPE(qword, 8), | |
108 | I386_TYPE(tbyte, 10), | |
109 | I386_TYPE(oword, 16), | |
110 | I386_TYPE(xmmword, 16), | |
111 | I386_TYPE(ymmword, 32), | |
43234a1e | 112 | I386_TYPE(zmmword, 64), |
ee86248c JB |
113 | #undef I386_TYPE |
114 | { "near", O_near_ptr, { 0xff04, 0xff02, 0xff08 } }, | |
115 | { "far", O_far_ptr, { 0xff06, 0xff05, 0xff06 } }, | |
116 | { NULL, O_illegal, { 0, 0, 0 } } | |
117 | }; | |
118 | ||
119 | operatorT i386_operator (const char *name, unsigned int operands, char *pc) | |
120 | { | |
121 | unsigned int j; | |
122 | ||
123 | if (!intel_syntax) | |
124 | return O_absent; | |
125 | ||
126 | if (!name) | |
127 | { | |
128 | if (operands != 2) | |
129 | return O_illegal; | |
130 | switch (*input_line_pointer) | |
131 | { | |
132 | case ':': | |
133 | ++input_line_pointer; | |
134 | return O_full_ptr; | |
135 | case '[': | |
136 | ++input_line_pointer; | |
137 | return O_index; | |
138 | case '@': | |
139 | if (this_operand >= 0 && i.reloc[this_operand] == NO_RELOC) | |
140 | { | |
141 | int adjust = 0; | |
142 | char *gotfree_input_line = lex_got (&i.reloc[this_operand], | |
143 | &adjust, | |
d258b828 | 144 | &intel_state.reloc_types); |
ee86248c JB |
145 | |
146 | if (!gotfree_input_line) | |
147 | break; | |
148 | free (gotfree_input_line); | |
149 | *input_line_pointer++ = '+'; | |
150 | memset (input_line_pointer, '0', adjust - 1); | |
151 | input_line_pointer[adjust - 1] = ' '; | |
152 | return O_add; | |
153 | } | |
154 | break; | |
155 | } | |
156 | return O_illegal; | |
157 | } | |
158 | ||
159 | for (j = 0; i386_operators[j].name; ++j) | |
91d6fa6a | 160 | if (strcasecmp (i386_operators[j].name, name) == 0) |
ee86248c JB |
161 | { |
162 | if (i386_operators[j].operands | |
163 | && i386_operators[j].operands != operands) | |
164 | return O_illegal; | |
1e9cc1c2 | 165 | return i386_operators[j].op; |
ee86248c JB |
166 | } |
167 | ||
168 | for (j = 0; i386_types[j].name; ++j) | |
91d6fa6a | 169 | if (strcasecmp (i386_types[j].name, name) == 0) |
ee86248c | 170 | break; |
d02603dc | 171 | |
ee86248c JB |
172 | if (i386_types[j].name && *pc == ' ') |
173 | { | |
d02603dc NC |
174 | char *pname; |
175 | char c; | |
176 | ||
177 | ++input_line_pointer; | |
178 | c = get_symbol_name (&pname); | |
ee86248c | 179 | |
91d6fa6a | 180 | if (strcasecmp (pname, "ptr") == 0) |
ee86248c | 181 | { |
d02603dc | 182 | /* FIXME: What if c == '"' ? */ |
91d6fa6a | 183 | pname[-1] = *pc; |
ee86248c JB |
184 | *pc = c; |
185 | if (intel_syntax > 0 || operands != 1) | |
186 | return O_illegal; | |
1e9cc1c2 | 187 | return i386_types[j].op; |
ee86248c JB |
188 | } |
189 | ||
d02603dc | 190 | (void) restore_line_pointer (c); |
91d6fa6a | 191 | input_line_pointer = pname - 1; |
ee86248c JB |
192 | } |
193 | ||
194 | return O_absent; | |
195 | } | |
196 | ||
197 | static int i386_intel_parse_name (const char *name, expressionS *e) | |
198 | { | |
91d6fa6a | 199 | unsigned int j; |
ee86248c | 200 | |
b7adb16d JB |
201 | if (! strcmp (name, "$")) |
202 | { | |
203 | current_location (e); | |
204 | return 1; | |
205 | } | |
206 | ||
91d6fa6a NC |
207 | for (j = 0; i386_types[j].name; ++j) |
208 | if (strcasecmp(i386_types[j].name, name) == 0) | |
ee86248c JB |
209 | { |
210 | e->X_op = O_constant; | |
91d6fa6a | 211 | e->X_add_number = i386_types[j].sz[flag_code]; |
ee86248c JB |
212 | e->X_add_symbol = NULL; |
213 | e->X_op_symbol = NULL; | |
214 | return 1; | |
215 | } | |
216 | ||
217 | return 0; | |
218 | } | |
219 | ||
91d6fa6a | 220 | static INLINE int i386_intel_check (const reg_entry *rreg, |
ee86248c | 221 | const reg_entry *base, |
91d6fa6a | 222 | const reg_entry *iindex) |
ee86248c | 223 | { |
f09c1772 L |
224 | if ((this_operand >= 0 |
225 | && rreg != i.op[this_operand].regs) | |
226 | || base != intel_state.base | |
227 | || iindex != intel_state.index) | |
ee86248c JB |
228 | { |
229 | as_bad (_("invalid use of register")); | |
230 | return 0; | |
231 | } | |
232 | return 1; | |
233 | } | |
234 | ||
235 | static INLINE void i386_intel_fold (expressionS *e, symbolS *sym) | |
236 | { | |
27dee630 | 237 | expressionS *exp = symbol_get_value_expression (sym); |
ee86248c JB |
238 | if (S_GET_SEGMENT (sym) == absolute_section) |
239 | { | |
240 | offsetT val = e->X_add_number; | |
241 | ||
27dee630 | 242 | *e = *exp; |
ee86248c JB |
243 | e->X_add_number += val; |
244 | } | |
245 | else | |
246 | { | |
27dee630 L |
247 | if (exp->X_op == O_symbol |
248 | && strcmp (S_GET_NAME (exp->X_add_symbol), | |
249 | GLOBAL_OFFSET_TABLE_NAME) == 0) | |
250 | sym = exp->X_add_symbol; | |
ee86248c JB |
251 | e->X_add_symbol = sym; |
252 | e->X_op_symbol = NULL; | |
253 | e->X_op = O_symbol; | |
254 | } | |
255 | } | |
256 | ||
3c7b9c2c L |
257 | static int |
258 | i386_intel_simplify_register (expressionS *e) | |
259 | { | |
260 | int reg_num; | |
261 | ||
262 | if (this_operand < 0 || intel_state.in_offset) | |
263 | { | |
264 | as_bad (_("invalid use of register")); | |
265 | return 0; | |
266 | } | |
267 | ||
268 | if (e->X_op == O_register) | |
269 | reg_num = e->X_add_number; | |
270 | else | |
271 | reg_num = e->X_md - 1; | |
272 | ||
35015cd1 NC |
273 | if (reg_num < 0 || reg_num >= (int) i386_regtab_size) |
274 | { | |
275 | as_bad (_("invalid register number")); | |
276 | return 0; | |
277 | } | |
278 | ||
3c7b9c2c L |
279 | if (!intel_state.in_bracket) |
280 | { | |
281 | if (i.op[this_operand].regs) | |
282 | { | |
283 | as_bad (_("invalid use of register")); | |
284 | return 0; | |
285 | } | |
00cee14f | 286 | if (i386_regtab[reg_num].reg_type.bitfield.class == SReg |
3c7b9c2c L |
287 | && i386_regtab[reg_num].reg_num == RegFlat) |
288 | { | |
289 | as_bad (_("invalid use of pseudo-register")); | |
290 | return 0; | |
291 | } | |
292 | i.op[this_operand].regs = i386_regtab + reg_num; | |
293 | } | |
9e2934f7 | 294 | else if (!intel_state.index |
1b54b8d7 JB |
295 | && (i386_regtab[reg_num].reg_type.bitfield.xmmword |
296 | || i386_regtab[reg_num].reg_type.bitfield.ymmword | |
297 | || i386_regtab[reg_num].reg_type.bitfield.zmmword | |
e968fc9b | 298 | || i386_regtab[reg_num].reg_num == RegIZ)) |
9e2934f7 | 299 | intel_state.index = i386_regtab + reg_num; |
3c7b9c2c L |
300 | else if (!intel_state.base && !intel_state.in_scale) |
301 | intel_state.base = i386_regtab + reg_num; | |
302 | else if (!intel_state.index) | |
9e2934f7 JB |
303 | { |
304 | if (intel_state.in_scale | |
47cd3fa7 JB |
305 | || current_templates->start->base_opcode == 0xf30f1b /* bndmk */ |
306 | || (current_templates->start->base_opcode & ~1) == 0x0f1a /* bnd{ld,st}x */ | |
9e2934f7 JB |
307 | || i386_regtab[reg_num].reg_type.bitfield.baseindex) |
308 | intel_state.index = i386_regtab + reg_num; | |
309 | else | |
310 | { | |
311 | /* Convert base to index and make ESP/RSP the base. */ | |
312 | intel_state.index = intel_state.base; | |
313 | intel_state.base = i386_regtab + reg_num; | |
314 | } | |
315 | } | |
3c7b9c2c L |
316 | else |
317 | { | |
318 | /* esp is invalid as index */ | |
8280f326 | 319 | intel_state.index = i386_regtab + REGNAM_EAX + ESP_REG_NUM; |
3c7b9c2c L |
320 | } |
321 | return 2; | |
322 | } | |
323 | ||
ee86248c JB |
324 | static int i386_intel_simplify (expressionS *); |
325 | ||
326 | static INLINE int i386_intel_simplify_symbol(symbolS *sym) | |
327 | { | |
328 | int ret = i386_intel_simplify (symbol_get_value_expression (sym)); | |
329 | ||
330 | if (ret == 2) | |
331 | { | |
332 | S_SET_SEGMENT(sym, absolute_section); | |
333 | ret = 1; | |
334 | } | |
335 | return ret; | |
336 | } | |
337 | ||
338 | static int i386_intel_simplify (expressionS *e) | |
339 | { | |
f09c1772 L |
340 | const reg_entry *the_reg = (this_operand >= 0 |
341 | ? i.op[this_operand].regs : NULL); | |
ee86248c | 342 | const reg_entry *base = intel_state.base; |
91d6fa6a | 343 | const reg_entry *state_index = intel_state.index; |
ee86248c JB |
344 | int ret; |
345 | ||
346 | if (!intel_syntax) | |
347 | return 1; | |
348 | ||
349 | switch (e->X_op) | |
350 | { | |
351 | case O_index: | |
352 | if (e->X_add_symbol) | |
353 | { | |
354 | if (!i386_intel_simplify_symbol (e->X_add_symbol) | |
f09c1772 L |
355 | || !i386_intel_check(the_reg, intel_state.base, |
356 | intel_state.index)) | |
5bb3703f | 357 | return 0; |
ee86248c JB |
358 | } |
359 | if (!intel_state.in_offset) | |
360 | ++intel_state.in_bracket; | |
361 | ret = i386_intel_simplify_symbol (e->X_op_symbol); | |
362 | if (!intel_state.in_offset) | |
363 | --intel_state.in_bracket; | |
364 | if (!ret) | |
365 | return 0; | |
366 | if (e->X_add_symbol) | |
367 | e->X_op = O_add; | |
368 | else | |
369 | i386_intel_fold (e, e->X_op_symbol); | |
370 | break; | |
371 | ||
372 | case O_offset: | |
6cee4cda | 373 | intel_state.has_offset = 1; |
ee86248c JB |
374 | ++intel_state.in_offset; |
375 | ret = i386_intel_simplify_symbol (e->X_add_symbol); | |
376 | --intel_state.in_offset; | |
91d6fa6a | 377 | if (!ret || !i386_intel_check(the_reg, base, state_index)) |
ee86248c JB |
378 | return 0; |
379 | i386_intel_fold (e, e->X_add_symbol); | |
380 | return ret; | |
381 | ||
382 | case O_byte_ptr: | |
383 | case O_word_ptr: | |
384 | case O_dword_ptr: | |
385 | case O_fword_ptr: | |
386 | case O_qword_ptr: | |
387 | case O_tbyte_ptr: | |
388 | case O_oword_ptr: | |
389 | case O_xmmword_ptr: | |
390 | case O_ymmword_ptr: | |
43234a1e | 391 | case O_zmmword_ptr: |
ee86248c JB |
392 | case O_near_ptr: |
393 | case O_far_ptr: | |
394 | if (intel_state.op_modifier == O_absent) | |
395 | intel_state.op_modifier = e->X_op; | |
396 | /* FALLTHROUGH */ | |
397 | case O_short: | |
f09c1772 L |
398 | if (symbol_get_value_expression (e->X_add_symbol)->X_op |
399 | == O_register) | |
ee86248c JB |
400 | { |
401 | as_bad (_("invalid use of register")); | |
402 | return 0; | |
403 | } | |
404 | if (!i386_intel_simplify_symbol (e->X_add_symbol)) | |
405 | return 0; | |
406 | i386_intel_fold (e, e->X_add_symbol); | |
407 | break; | |
408 | ||
409 | case O_full_ptr: | |
f09c1772 L |
410 | if (symbol_get_value_expression (e->X_op_symbol)->X_op |
411 | == O_register) | |
ee86248c JB |
412 | { |
413 | as_bad (_("invalid use of register")); | |
414 | return 0; | |
415 | } | |
416 | if (!i386_intel_simplify_symbol (e->X_op_symbol) | |
f09c1772 L |
417 | || !i386_intel_check(the_reg, intel_state.base, |
418 | intel_state.index)) | |
ee86248c JB |
419 | return 0; |
420 | if (!intel_state.in_offset) | |
fd4e0347 JB |
421 | { |
422 | if (!intel_state.seg) | |
423 | intel_state.seg = e->X_add_symbol; | |
424 | else | |
425 | { | |
426 | expressionS exp; | |
427 | ||
428 | exp.X_op = O_full_ptr; | |
429 | exp.X_add_symbol = e->X_add_symbol; | |
430 | exp.X_op_symbol = intel_state.seg; | |
431 | intel_state.seg = make_expr_symbol (&exp); | |
432 | } | |
433 | } | |
ee86248c JB |
434 | i386_intel_fold (e, e->X_op_symbol); |
435 | break; | |
436 | ||
ee86248c JB |
437 | case O_multiply: |
438 | if (this_operand >= 0 && intel_state.in_bracket) | |
439 | { | |
440 | expressionS *scale = NULL; | |
c2a5914e | 441 | int has_index = (intel_state.index != NULL); |
ee86248c JB |
442 | |
443 | if (!intel_state.in_scale++) | |
444 | intel_state.scale_factor = 1; | |
445 | ||
446 | ret = i386_intel_simplify_symbol (e->X_add_symbol); | |
c2a5914e | 447 | if (ret && !has_index && intel_state.index) |
ee86248c JB |
448 | scale = symbol_get_value_expression (e->X_op_symbol); |
449 | ||
450 | if (ret) | |
451 | ret = i386_intel_simplify_symbol (e->X_op_symbol); | |
c2a5914e | 452 | if (ret && !scale && !has_index && intel_state.index) |
ee86248c JB |
453 | scale = symbol_get_value_expression (e->X_add_symbol); |
454 | ||
c2a5914e | 455 | if (ret && scale) |
ee86248c JB |
456 | { |
457 | resolve_expression (scale); | |
458 | if (scale->X_op != O_constant | |
dc821c5f | 459 | || intel_state.index->reg_type.bitfield.word) |
ee86248c JB |
460 | scale->X_add_number = 0; |
461 | intel_state.scale_factor *= scale->X_add_number; | |
462 | } | |
463 | ||
464 | --intel_state.in_scale; | |
465 | if (!ret) | |
466 | return 0; | |
467 | ||
468 | if (!intel_state.in_scale) | |
469 | switch (intel_state.scale_factor) | |
470 | { | |
471 | case 1: | |
472 | i.log2_scale_factor = 0; | |
473 | break; | |
474 | case 2: | |
475 | i.log2_scale_factor = 1; | |
476 | break; | |
477 | case 4: | |
478 | i.log2_scale_factor = 2; | |
479 | break; | |
480 | case 8: | |
481 | i.log2_scale_factor = 3; | |
482 | break; | |
483 | default: | |
484 | /* esp is invalid as index */ | |
8280f326 | 485 | intel_state.index = i386_regtab + REGNAM_EAX + ESP_REG_NUM; |
ee86248c JB |
486 | break; |
487 | } | |
488 | ||
489 | break; | |
490 | } | |
92b4f90c | 491 | goto fallthrough; |
3c7b9c2c L |
492 | |
493 | case O_register: | |
494 | ret = i386_intel_simplify_register (e); | |
495 | if (ret == 2) | |
496 | { | |
497 | gas_assert (e->X_add_number < (unsigned short) -1); | |
498 | e->X_md = (unsigned short) e->X_add_number + 1; | |
499 | e->X_op = O_constant; | |
500 | e->X_add_number = 0; | |
501 | } | |
502 | return ret; | |
503 | ||
504 | case O_constant: | |
505 | if (e->X_md) | |
506 | return i386_intel_simplify_register (e); | |
507 | ||
ee86248c JB |
508 | /* FALLTHROUGH */ |
509 | default: | |
92b4f90c | 510 | fallthrough: |
f09c1772 L |
511 | if (e->X_add_symbol |
512 | && !i386_intel_simplify_symbol (e->X_add_symbol)) | |
ee86248c JB |
513 | return 0; |
514 | if (e->X_op == O_add || e->X_op == O_subtract) | |
515 | { | |
516 | base = intel_state.base; | |
91d6fa6a | 517 | state_index = intel_state.index; |
ee86248c | 518 | } |
91d6fa6a | 519 | if (!i386_intel_check (the_reg, base, state_index) |
f09c1772 L |
520 | || (e->X_op_symbol |
521 | && !i386_intel_simplify_symbol (e->X_op_symbol)) | |
91d6fa6a | 522 | || !i386_intel_check (the_reg, |
f09c1772 L |
523 | (e->X_op != O_add |
524 | ? base : intel_state.base), | |
525 | (e->X_op != O_add | |
526 | ? state_index : intel_state.index))) | |
ee86248c JB |
527 | return 0; |
528 | break; | |
529 | } | |
530 | ||
f09c1772 L |
531 | if (this_operand >= 0 |
532 | && e->X_op == O_symbol | |
533 | && !intel_state.in_offset) | |
ee86248c JB |
534 | { |
535 | segT seg = S_GET_SEGMENT (e->X_add_symbol); | |
536 | ||
537 | if (seg != absolute_section | |
538 | && seg != reg_section | |
539 | && seg != expr_section) | |
540 | intel_state.is_mem |= 2 - !intel_state.in_bracket; | |
541 | } | |
542 | ||
543 | return 1; | |
544 | } | |
545 | ||
546 | int i386_need_index_operator (void) | |
547 | { | |
548 | return intel_syntax < 0; | |
549 | } | |
550 | ||
551 | static int | |
552 | i386_intel_operand (char *operand_string, int got_a_float) | |
553 | { | |
554 | char *saved_input_line_pointer, *buf; | |
555 | segT exp_seg; | |
556 | expressionS exp, *expP; | |
557 | char suffix = 0; | |
558 | int ret; | |
559 | ||
43234a1e L |
560 | /* Handle vector immediates. */ |
561 | if (RC_SAE_immediate (operand_string)) | |
562 | return 1; | |
563 | ||
ee86248c JB |
564 | /* Initialize state structure. */ |
565 | intel_state.op_modifier = O_absent; | |
566 | intel_state.is_mem = 0; | |
25303607 | 567 | intel_state.is_indirect = 0; |
1acf546e | 568 | intel_state.has_offset = 0; |
ee86248c JB |
569 | intel_state.base = NULL; |
570 | intel_state.index = NULL; | |
571 | intel_state.seg = NULL; | |
572 | operand_type_set (&intel_state.reloc_types, ~0); | |
9c2799c2 NC |
573 | gas_assert (!intel_state.in_offset); |
574 | gas_assert (!intel_state.in_bracket); | |
575 | gas_assert (!intel_state.in_scale); | |
ee86248c JB |
576 | |
577 | saved_input_line_pointer = input_line_pointer; | |
578 | input_line_pointer = buf = xstrdup (operand_string); | |
579 | ||
580 | intel_syntax = -1; | |
581 | memset (&exp, 0, sizeof(exp)); | |
582 | exp_seg = expression (&exp); | |
583 | ret = i386_intel_simplify (&exp); | |
584 | intel_syntax = 1; | |
585 | ||
586 | SKIP_WHITESPACE (); | |
43234a1e L |
587 | |
588 | /* Handle vector operations. */ | |
589 | if (*input_line_pointer == '{') | |
590 | { | |
591 | char *end = check_VecOperations (input_line_pointer, NULL); | |
592 | if (end) | |
593 | input_line_pointer = end; | |
594 | else | |
595 | ret = 0; | |
596 | } | |
597 | ||
ee86248c JB |
598 | if (!is_end_of_line[(unsigned char) *input_line_pointer]) |
599 | { | |
38bf5113 JB |
600 | if (ret) |
601 | as_bad (_("junk `%s' after expression"), input_line_pointer); | |
ee86248c JB |
602 | ret = 0; |
603 | } | |
604 | else if (exp.X_op == O_illegal || exp.X_op == O_absent) | |
605 | { | |
38bf5113 JB |
606 | if (ret) |
607 | as_bad (_("invalid expression")); | |
ee86248c JB |
608 | ret = 0; |
609 | } | |
6cee4cda L |
610 | else if (!intel_state.has_offset |
611 | && input_line_pointer > buf | |
612 | && *(input_line_pointer - 1) == ']') | |
25303607 L |
613 | { |
614 | intel_state.is_mem |= 1; | |
615 | intel_state.is_indirect = 1; | |
616 | } | |
ee86248c JB |
617 | |
618 | input_line_pointer = saved_input_line_pointer; | |
619 | free (buf); | |
620 | ||
9c2799c2 NC |
621 | gas_assert (!intel_state.in_offset); |
622 | gas_assert (!intel_state.in_bracket); | |
623 | gas_assert (!intel_state.in_scale); | |
ee86248c JB |
624 | |
625 | if (!ret) | |
626 | return 0; | |
627 | ||
628 | if (intel_state.op_modifier != O_absent | |
629 | && current_templates->start->base_opcode != 0x8d /* lea */) | |
630 | { | |
631 | i.types[this_operand].bitfield.unspecified = 0; | |
632 | ||
633 | switch (intel_state.op_modifier) | |
634 | { | |
635 | case O_byte_ptr: | |
636 | i.types[this_operand].bitfield.byte = 1; | |
637 | suffix = BYTE_MNEM_SUFFIX; | |
638 | break; | |
639 | ||
640 | case O_word_ptr: | |
641 | i.types[this_operand].bitfield.word = 1; | |
642 | if ((current_templates->start->name[0] == 'l' | |
643 | && current_templates->start->name[2] == 's' | |
644 | && current_templates->start->name[3] == 0) | |
645 | || current_templates->start->base_opcode == 0x62 /* bound */) | |
646 | suffix = BYTE_MNEM_SUFFIX; /* so it will cause an error */ | |
647 | else if (got_a_float == 2) /* "fi..." */ | |
648 | suffix = SHORT_MNEM_SUFFIX; | |
649 | else | |
650 | suffix = WORD_MNEM_SUFFIX; | |
651 | break; | |
652 | ||
653 | case O_dword_ptr: | |
654 | i.types[this_operand].bitfield.dword = 1; | |
655 | if ((current_templates->start->name[0] == 'l' | |
656 | && current_templates->start->name[2] == 's' | |
657 | && current_templates->start->name[3] == 0) | |
658 | || current_templates->start->base_opcode == 0x62 /* bound */) | |
659 | suffix = WORD_MNEM_SUFFIX; | |
660 | else if (flag_code == CODE_16BIT | |
661 | && (current_templates->start->opcode_modifier.jump | |
662 | || current_templates->start->opcode_modifier.jumpdword)) | |
663 | suffix = LONG_DOUBLE_MNEM_SUFFIX; | |
664 | else if (got_a_float == 1) /* "f..." */ | |
665 | suffix = SHORT_MNEM_SUFFIX; | |
666 | else | |
667 | suffix = LONG_MNEM_SUFFIX; | |
668 | break; | |
669 | ||
670 | case O_fword_ptr: | |
671 | i.types[this_operand].bitfield.fword = 1; | |
672 | if (current_templates->start->name[0] == 'l' | |
673 | && current_templates->start->name[2] == 's' | |
674 | && current_templates->start->name[3] == 0) | |
675 | suffix = LONG_MNEM_SUFFIX; | |
676 | else if (!got_a_float) | |
677 | { | |
678 | if (flag_code == CODE_16BIT) | |
679 | add_prefix (DATA_PREFIX_OPCODE); | |
680 | suffix = LONG_DOUBLE_MNEM_SUFFIX; | |
681 | } | |
682 | else | |
683 | suffix = BYTE_MNEM_SUFFIX; /* so it will cause an error */ | |
684 | break; | |
685 | ||
686 | case O_qword_ptr: | |
687 | i.types[this_operand].bitfield.qword = 1; | |
688 | if (current_templates->start->base_opcode == 0x62 /* bound */ | |
689 | || got_a_float == 1) /* "f..." */ | |
690 | suffix = LONG_MNEM_SUFFIX; | |
691 | else | |
692 | suffix = QWORD_MNEM_SUFFIX; | |
693 | break; | |
694 | ||
695 | case O_tbyte_ptr: | |
696 | i.types[this_operand].bitfield.tbyte = 1; | |
697 | if (got_a_float == 1) | |
698 | suffix = LONG_DOUBLE_MNEM_SUFFIX; | |
699 | else | |
700 | suffix = BYTE_MNEM_SUFFIX; /* so it will cause an error */ | |
701 | break; | |
702 | ||
703 | case O_oword_ptr: | |
704 | case O_xmmword_ptr: | |
705 | i.types[this_operand].bitfield.xmmword = 1; | |
ee86248c JB |
706 | break; |
707 | ||
708 | case O_ymmword_ptr: | |
709 | i.types[this_operand].bitfield.ymmword = 1; | |
ee86248c JB |
710 | break; |
711 | ||
43234a1e L |
712 | case O_zmmword_ptr: |
713 | i.types[this_operand].bitfield.zmmword = 1; | |
43234a1e L |
714 | break; |
715 | ||
ee86248c JB |
716 | case O_far_ptr: |
717 | suffix = LONG_DOUBLE_MNEM_SUFFIX; | |
718 | /* FALLTHROUGH */ | |
719 | case O_near_ptr: | |
720 | if (!current_templates->start->opcode_modifier.jump | |
721 | && !current_templates->start->opcode_modifier.jumpdword) | |
722 | suffix = got_a_float /* so it will cause an error */ | |
723 | ? BYTE_MNEM_SUFFIX | |
724 | : LONG_DOUBLE_MNEM_SUFFIX; | |
725 | break; | |
726 | ||
727 | default: | |
728 | BAD_CASE (intel_state.op_modifier); | |
729 | break; | |
730 | } | |
731 | ||
732 | if (!i.suffix) | |
733 | i.suffix = suffix; | |
734 | else if (i.suffix != suffix) | |
735 | { | |
736 | as_bad (_("conflicting operand size modifiers")); | |
737 | return 0; | |
738 | } | |
739 | } | |
740 | ||
741 | /* Operands for jump/call need special consideration. */ | |
742 | if (current_templates->start->opcode_modifier.jump | |
743 | || current_templates->start->opcode_modifier.jumpdword | |
744 | || current_templates->start->opcode_modifier.jumpintersegment) | |
745 | { | |
f09c1772 L |
746 | if (i.op[this_operand].regs |
747 | || intel_state.base | |
748 | || intel_state.index | |
ee86248c JB |
749 | || intel_state.is_mem > 1) |
750 | i.types[this_operand].bitfield.jumpabsolute = 1; | |
751 | else | |
752 | switch (intel_state.op_modifier) | |
753 | { | |
754 | case O_near_ptr: | |
755 | if (intel_state.seg) | |
756 | i.types[this_operand].bitfield.jumpabsolute = 1; | |
757 | else | |
758 | intel_state.is_mem = 1; | |
759 | break; | |
760 | case O_far_ptr: | |
761 | case O_absent: | |
762 | if (!intel_state.seg) | |
763 | { | |
764 | intel_state.is_mem = 1; | |
765 | if (intel_state.op_modifier == O_absent) | |
25303607 L |
766 | { |
767 | if (intel_state.is_indirect == 1) | |
768 | i.types[this_operand].bitfield.jumpabsolute = 1; | |
769 | break; | |
770 | } | |
ee86248c JB |
771 | as_bad (_("cannot infer the segment part of the operand")); |
772 | return 0; | |
773 | } | |
774 | else if (S_GET_SEGMENT (intel_state.seg) == reg_section) | |
775 | i.types[this_operand].bitfield.jumpabsolute = 1; | |
776 | else | |
777 | { | |
778 | i386_operand_type types; | |
779 | ||
780 | if (i.imm_operands >= MAX_IMMEDIATE_OPERANDS) | |
781 | { | |
782 | as_bad (_("at most %d immediate operands are allowed"), | |
783 | MAX_IMMEDIATE_OPERANDS); | |
784 | return 0; | |
785 | } | |
786 | expP = &im_expressions[i.imm_operands++]; | |
787 | memset (expP, 0, sizeof(*expP)); | |
788 | expP->X_op = O_symbol; | |
789 | expP->X_add_symbol = intel_state.seg; | |
790 | i.op[this_operand].imms = expP; | |
791 | ||
792 | resolve_expression (expP); | |
793 | operand_type_set (&types, ~0); | |
794 | if (!i386_finalize_immediate (S_GET_SEGMENT (intel_state.seg), | |
795 | expP, types, operand_string)) | |
796 | return 0; | |
797 | if (i.operands < MAX_OPERANDS) | |
798 | { | |
799 | this_operand = i.operands++; | |
800 | i.types[this_operand].bitfield.unspecified = 1; | |
801 | } | |
802 | if (suffix == LONG_DOUBLE_MNEM_SUFFIX) | |
803 | i.suffix = 0; | |
804 | intel_state.seg = NULL; | |
805 | intel_state.is_mem = 0; | |
806 | } | |
807 | break; | |
808 | default: | |
809 | i.types[this_operand].bitfield.jumpabsolute = 1; | |
810 | break; | |
811 | } | |
812 | if (i.types[this_operand].bitfield.jumpabsolute) | |
813 | intel_state.is_mem |= 1; | |
814 | } | |
815 | else if (intel_state.seg) | |
816 | intel_state.is_mem |= 1; | |
817 | ||
818 | if (i.op[this_operand].regs) | |
819 | { | |
820 | i386_operand_type temp; | |
821 | ||
822 | /* Register operand. */ | |
823 | if (intel_state.base || intel_state.index || intel_state.seg) | |
824 | { | |
825 | as_bad (_("invalid operand")); | |
826 | return 0; | |
827 | } | |
828 | ||
829 | temp = i.op[this_operand].regs->reg_type; | |
830 | temp.bitfield.baseindex = 0; | |
f09c1772 L |
831 | i.types[this_operand] = operand_type_or (i.types[this_operand], |
832 | temp); | |
ee86248c JB |
833 | i.types[this_operand].bitfield.unspecified = 0; |
834 | ++i.reg_operands; | |
835 | } | |
f09c1772 L |
836 | else if (intel_state.base |
837 | || intel_state.index | |
838 | || intel_state.seg | |
ee86248c JB |
839 | || intel_state.is_mem) |
840 | { | |
841 | /* Memory operand. */ | |
8325cc63 JB |
842 | if (i.mem_operands == 1 && !maybe_adjust_templates ()) |
843 | return 0; | |
faf786e6 | 844 | if ((int) i.mem_operands |
ee86248c JB |
845 | >= 2 - !current_templates->start->opcode_modifier.isstring) |
846 | { | |
313c53d1 L |
847 | /* Handle |
848 | ||
849 | call 0x9090,0x90909090 | |
850 | lcall 0x9090,0x90909090 | |
851 | jmp 0x9090,0x90909090 | |
852 | ljmp 0x9090,0x90909090 | |
853 | */ | |
854 | ||
855 | if ((current_templates->start->opcode_modifier.jumpintersegment | |
856 | || current_templates->start->opcode_modifier.jumpdword | |
857 | || current_templates->start->opcode_modifier.jump) | |
858 | && this_operand == 1 | |
859 | && intel_state.seg == NULL | |
860 | && i.mem_operands == 1 | |
861 | && i.disp_operands == 1 | |
862 | && intel_state.op_modifier == O_absent) | |
863 | { | |
864 | /* Try to process the first operand as immediate, */ | |
865 | this_operand = 0; | |
866 | if (i386_finalize_immediate (exp_seg, i.op[0].imms, | |
867 | intel_state.reloc_types, | |
868 | NULL)) | |
869 | { | |
870 | this_operand = 1; | |
871 | expP = &im_expressions[0]; | |
872 | i.op[this_operand].imms = expP; | |
873 | *expP = exp; | |
874 | ||
875 | /* Try to process the second operand as immediate, */ | |
876 | if (i386_finalize_immediate (exp_seg, expP, | |
877 | intel_state.reloc_types, | |
878 | NULL)) | |
879 | { | |
880 | i.mem_operands = 0; | |
881 | i.disp_operands = 0; | |
882 | i.imm_operands = 2; | |
c48dadc9 | 883 | i.flags[0] &= ~Operand_Mem; |
313c53d1 L |
884 | i.types[0].bitfield.disp16 = 0; |
885 | i.types[0].bitfield.disp32 = 0; | |
886 | i.types[0].bitfield.disp32s = 0; | |
887 | return 1; | |
888 | } | |
889 | } | |
890 | } | |
891 | ||
ee86248c JB |
892 | as_bad (_("too many memory references for `%s'"), |
893 | current_templates->start->name); | |
894 | return 0; | |
895 | } | |
896 | ||
2abc2bec JB |
897 | /* Swap base and index in 16-bit memory operands like |
898 | [si+bx]. Since i386_index_check is also used in AT&T | |
899 | mode we have to do this here. */ | |
900 | if (intel_state.base | |
901 | && intel_state.index | |
dc821c5f JB |
902 | && intel_state.base->reg_type.bitfield.word |
903 | && intel_state.index->reg_type.bitfield.word | |
2abc2bec JB |
904 | && intel_state.base->reg_num >= 6 |
905 | && intel_state.index->reg_num < 6) | |
906 | { | |
907 | i.base_reg = intel_state.index; | |
908 | i.index_reg = intel_state.base; | |
909 | } | |
910 | else | |
911 | { | |
912 | i.base_reg = intel_state.base; | |
913 | i.index_reg = intel_state.index; | |
914 | } | |
915 | ||
916 | if (i.base_reg || i.index_reg) | |
917 | i.types[this_operand].bitfield.baseindex = 1; | |
918 | ||
ee86248c JB |
919 | expP = &disp_expressions[i.disp_operands]; |
920 | memcpy (expP, &exp, sizeof(exp)); | |
921 | resolve_expression (expP); | |
922 | ||
f09c1772 L |
923 | if (expP->X_op != O_constant |
924 | || expP->X_add_number | |
2abc2bec | 925 | || !i.types[this_operand].bitfield.baseindex) |
ee86248c JB |
926 | { |
927 | i.op[this_operand].disps = expP; | |
928 | i.disp_operands++; | |
929 | ||
2abc2bec JB |
930 | i386_addressing_mode (); |
931 | ||
ee86248c JB |
932 | if (flag_code == CODE_64BIT) |
933 | { | |
934 | i.types[this_operand].bitfield.disp32 = 1; | |
935 | if (!i.prefix[ADDR_PREFIX]) | |
936 | { | |
937 | i.types[this_operand].bitfield.disp64 = 1; | |
938 | i.types[this_operand].bitfield.disp32s = 1; | |
939 | } | |
940 | } | |
941 | else if (!i.prefix[ADDR_PREFIX] ^ (flag_code == CODE_16BIT)) | |
942 | i.types[this_operand].bitfield.disp32 = 1; | |
943 | else | |
944 | i.types[this_operand].bitfield.disp16 = 1; | |
945 | ||
946 | #if defined (OBJ_AOUT) || defined (OBJ_MAYBE_AOUT) | |
947 | /* | |
948 | * exp_seg is used only for verification in | |
949 | * i386_finalize_displacement, and we can end up seeing reg_section | |
950 | * here - but we know we removed all registers from the expression | |
951 | * (or error-ed on any remaining ones) in i386_intel_simplify. I | |
952 | * consider the check in i386_finalize_displacement bogus anyway, in | |
953 | * particular because it doesn't allow for expr_section, so I'd | |
954 | * rather see that check (and the similar one in | |
955 | * i386_finalize_immediate) use SEG_NORMAL(), but not being an a.out | |
956 | * expert I can't really say whether that would have other bad side | |
957 | * effects. | |
958 | */ | |
959 | if (OUTPUT_FLAVOR == bfd_target_aout_flavour | |
960 | && exp_seg == reg_section) | |
961 | exp_seg = expP->X_op != O_constant ? undefined_section | |
962 | : absolute_section; | |
963 | #endif | |
964 | ||
965 | if (!i386_finalize_displacement (exp_seg, expP, | |
966 | intel_state.reloc_types, | |
967 | operand_string)) | |
968 | return 0; | |
969 | } | |
970 | ||
ee86248c JB |
971 | if (intel_state.seg) |
972 | { | |
fd4e0347 | 973 | for (ret = check_none; ; ret = operand_check) |
e21440ba JB |
974 | { |
975 | expP = symbol_get_value_expression (intel_state.seg); | |
fd4e0347 JB |
976 | if (expP->X_op != O_full_ptr |
977 | || symbol_get_value_expression (expP->X_op_symbol)->X_op | |
978 | != O_register) | |
e21440ba JB |
979 | break; |
980 | intel_state.seg = expP->X_add_symbol; | |
981 | } | |
0398aac5 | 982 | if (expP->X_op != O_register) |
ee86248c JB |
983 | { |
984 | as_bad (_("segment register name expected")); | |
985 | return 0; | |
986 | } | |
00cee14f | 987 | if (i386_regtab[expP->X_add_number].reg_type.bitfield.class != SReg) |
ee86248c JB |
988 | { |
989 | as_bad (_("invalid use of register")); | |
990 | return 0; | |
991 | } | |
fd4e0347 JB |
992 | switch (ret) |
993 | { | |
994 | case check_error: | |
995 | as_bad (_("redundant segment overrides")); | |
996 | return 0; | |
997 | case check_warning: | |
998 | as_warn (_("redundant segment overrides")); | |
999 | break; | |
1000 | } | |
ee86248c JB |
1001 | switch (i386_regtab[expP->X_add_number].reg_num) |
1002 | { | |
1003 | case 0: i.seg[i.mem_operands] = &es; break; | |
1004 | case 1: i.seg[i.mem_operands] = &cs; break; | |
1005 | case 2: i.seg[i.mem_operands] = &ss; break; | |
1006 | case 3: i.seg[i.mem_operands] = &ds; break; | |
1007 | case 4: i.seg[i.mem_operands] = &fs; break; | |
1008 | case 5: i.seg[i.mem_operands] = &gs; break; | |
1009 | case RegFlat: i.seg[i.mem_operands] = NULL; break; | |
1010 | } | |
1011 | } | |
1012 | ||
ee86248c JB |
1013 | if (!i386_index_check (operand_string)) |
1014 | return 0; | |
1015 | ||
c48dadc9 | 1016 | i.flags[this_operand] |= Operand_Mem; |
8325cc63 JB |
1017 | if (i.mem_operands == 0) |
1018 | i.memop1_string = xstrdup (operand_string); | |
ee86248c JB |
1019 | ++i.mem_operands; |
1020 | } | |
1021 | else | |
1022 | { | |
1023 | /* Immediate. */ | |
1024 | if (i.imm_operands >= MAX_IMMEDIATE_OPERANDS) | |
1025 | { | |
1026 | as_bad (_("at most %d immediate operands are allowed"), | |
1027 | MAX_IMMEDIATE_OPERANDS); | |
1028 | return 0; | |
1029 | } | |
1030 | ||
1031 | expP = &im_expressions[i.imm_operands++]; | |
1032 | i.op[this_operand].imms = expP; | |
1033 | *expP = exp; | |
1034 | ||
1035 | return i386_finalize_immediate (exp_seg, expP, intel_state.reloc_types, | |
1036 | operand_string); | |
1037 | } | |
1038 | ||
1039 | return 1; | |
1040 | } |