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ee86248c JB |
1 | /* tc-i386.c -- Assemble Intel syntax code for ix86/x86-64 |
2 | Copyright 2009 | |
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. */ | |
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. */ | |
29 | unsigned int in_scale; /* >=1 if processing multipication operand | |
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 |
ee86248c JB |
65 | |
66 | static struct | |
67 | { | |
68 | const char *name; | |
1e9cc1c2 | 69 | operatorT op; |
ee86248c JB |
70 | unsigned int operands; |
71 | } | |
72 | const i386_operators[] = | |
73 | { | |
74 | { "and", O_bit_and, 2 }, | |
75 | { "eq", O_eq, 2 }, | |
76 | { "ge", O_ge, 2 }, | |
77 | { "gt", O_gt, 2 }, | |
78 | { "le", O_le, 2 }, | |
79 | { "lt", O_lt, 2 }, | |
80 | { "mod", O_modulus, 2 }, | |
81 | { "ne", O_ne, 2 }, | |
82 | { "not", O_bit_not, 1 }, | |
83 | { "offset", O_offset, 1 }, | |
84 | { "or", O_bit_inclusive_or, 2 }, | |
85 | { "shl", O_left_shift, 2 }, | |
86 | { "short", O_short, 1 }, | |
87 | { "shr", O_right_shift, 2 }, | |
88 | { "xor", O_bit_exclusive_or, 2 }, | |
89 | { NULL, O_illegal, 0 } | |
90 | }; | |
91 | ||
92 | static struct | |
93 | { | |
94 | const char *name; | |
1e9cc1c2 | 95 | operatorT op; |
ee86248c JB |
96 | unsigned short sz[3]; |
97 | } | |
98 | const i386_types[] = | |
99 | { | |
100 | #define I386_TYPE(t, n) { #t, O_##t##_ptr, { n, n, n } } | |
101 | I386_TYPE(byte, 1), | |
102 | I386_TYPE(word, 2), | |
103 | I386_TYPE(dword, 4), | |
104 | I386_TYPE(fword, 6), | |
105 | I386_TYPE(qword, 8), | |
106 | I386_TYPE(tbyte, 10), | |
107 | I386_TYPE(oword, 16), | |
108 | I386_TYPE(xmmword, 16), | |
109 | I386_TYPE(ymmword, 32), | |
110 | #undef I386_TYPE | |
111 | { "near", O_near_ptr, { 0xff04, 0xff02, 0xff08 } }, | |
112 | { "far", O_far_ptr, { 0xff06, 0xff05, 0xff06 } }, | |
113 | { NULL, O_illegal, { 0, 0, 0 } } | |
114 | }; | |
115 | ||
116 | operatorT i386_operator (const char *name, unsigned int operands, char *pc) | |
117 | { | |
118 | unsigned int j; | |
119 | ||
120 | if (!intel_syntax) | |
121 | return O_absent; | |
122 | ||
123 | if (!name) | |
124 | { | |
125 | if (operands != 2) | |
126 | return O_illegal; | |
127 | switch (*input_line_pointer) | |
128 | { | |
129 | case ':': | |
130 | ++input_line_pointer; | |
131 | return O_full_ptr; | |
132 | case '[': | |
133 | ++input_line_pointer; | |
134 | return O_index; | |
135 | case '@': | |
136 | if (this_operand >= 0 && i.reloc[this_operand] == NO_RELOC) | |
137 | { | |
138 | int adjust = 0; | |
139 | char *gotfree_input_line = lex_got (&i.reloc[this_operand], | |
140 | &adjust, | |
141 | &intel_state.reloc_types); | |
142 | ||
143 | if (!gotfree_input_line) | |
144 | break; | |
145 | free (gotfree_input_line); | |
146 | *input_line_pointer++ = '+'; | |
147 | memset (input_line_pointer, '0', adjust - 1); | |
148 | input_line_pointer[adjust - 1] = ' '; | |
149 | return O_add; | |
150 | } | |
151 | break; | |
152 | } | |
153 | return O_illegal; | |
154 | } | |
155 | ||
156 | for (j = 0; i386_operators[j].name; ++j) | |
91d6fa6a | 157 | if (strcasecmp (i386_operators[j].name, name) == 0) |
ee86248c JB |
158 | { |
159 | if (i386_operators[j].operands | |
160 | && i386_operators[j].operands != operands) | |
161 | return O_illegal; | |
1e9cc1c2 | 162 | return i386_operators[j].op; |
ee86248c JB |
163 | } |
164 | ||
165 | for (j = 0; i386_types[j].name; ++j) | |
91d6fa6a | 166 | if (strcasecmp (i386_types[j].name, name) == 0) |
ee86248c JB |
167 | break; |
168 | if (i386_types[j].name && *pc == ' ') | |
169 | { | |
91d6fa6a | 170 | char *pname = ++input_line_pointer; |
ee86248c JB |
171 | char c = get_symbol_end (); |
172 | ||
91d6fa6a | 173 | if (strcasecmp (pname, "ptr") == 0) |
ee86248c | 174 | { |
91d6fa6a | 175 | pname[-1] = *pc; |
ee86248c JB |
176 | *pc = c; |
177 | if (intel_syntax > 0 || operands != 1) | |
178 | return O_illegal; | |
1e9cc1c2 | 179 | return i386_types[j].op; |
ee86248c JB |
180 | } |
181 | ||
182 | *input_line_pointer = c; | |
91d6fa6a | 183 | input_line_pointer = pname - 1; |
ee86248c JB |
184 | } |
185 | ||
186 | return O_absent; | |
187 | } | |
188 | ||
189 | static int i386_intel_parse_name (const char *name, expressionS *e) | |
190 | { | |
91d6fa6a | 191 | unsigned int j; |
ee86248c | 192 | |
91d6fa6a NC |
193 | for (j = 0; i386_types[j].name; ++j) |
194 | if (strcasecmp(i386_types[j].name, name) == 0) | |
ee86248c JB |
195 | { |
196 | e->X_op = O_constant; | |
91d6fa6a | 197 | e->X_add_number = i386_types[j].sz[flag_code]; |
ee86248c JB |
198 | e->X_add_symbol = NULL; |
199 | e->X_op_symbol = NULL; | |
200 | return 1; | |
201 | } | |
202 | ||
203 | return 0; | |
204 | } | |
205 | ||
91d6fa6a | 206 | static INLINE int i386_intel_check (const reg_entry *rreg, |
ee86248c | 207 | const reg_entry *base, |
91d6fa6a | 208 | const reg_entry *iindex) |
ee86248c | 209 | { |
91d6fa6a NC |
210 | if ((this_operand >= 0 && rreg != i.op[this_operand].regs) |
211 | || base != intel_state.base || iindex != intel_state.index) | |
ee86248c JB |
212 | { |
213 | as_bad (_("invalid use of register")); | |
214 | return 0; | |
215 | } | |
216 | return 1; | |
217 | } | |
218 | ||
219 | static INLINE void i386_intel_fold (expressionS *e, symbolS *sym) | |
220 | { | |
221 | if (S_GET_SEGMENT (sym) == absolute_section) | |
222 | { | |
223 | offsetT val = e->X_add_number; | |
224 | ||
225 | *e = *symbol_get_value_expression (sym); | |
226 | e->X_add_number += val; | |
227 | } | |
228 | else | |
229 | { | |
230 | e->X_add_symbol = sym; | |
231 | e->X_op_symbol = NULL; | |
232 | e->X_op = O_symbol; | |
233 | } | |
234 | } | |
235 | ||
3c7b9c2c L |
236 | static int |
237 | i386_intel_simplify_register (expressionS *e) | |
238 | { | |
239 | int reg_num; | |
240 | ||
241 | if (this_operand < 0 || intel_state.in_offset) | |
242 | { | |
243 | as_bad (_("invalid use of register")); | |
244 | return 0; | |
245 | } | |
246 | ||
247 | if (e->X_op == O_register) | |
248 | reg_num = e->X_add_number; | |
249 | else | |
250 | reg_num = e->X_md - 1; | |
251 | ||
252 | if (!intel_state.in_bracket) | |
253 | { | |
254 | if (i.op[this_operand].regs) | |
255 | { | |
256 | as_bad (_("invalid use of register")); | |
257 | return 0; | |
258 | } | |
259 | if (i386_regtab[reg_num].reg_type.bitfield.sreg3 | |
260 | && i386_regtab[reg_num].reg_num == RegFlat) | |
261 | { | |
262 | as_bad (_("invalid use of pseudo-register")); | |
263 | return 0; | |
264 | } | |
265 | i.op[this_operand].regs = i386_regtab + reg_num; | |
266 | } | |
267 | else if (!intel_state.base && !intel_state.in_scale) | |
268 | intel_state.base = i386_regtab + reg_num; | |
269 | else if (!intel_state.index) | |
270 | intel_state.index = i386_regtab + reg_num; | |
271 | else | |
272 | { | |
273 | /* esp is invalid as index */ | |
274 | intel_state.index = i386_regtab + REGNAM_EAX + 4; | |
275 | } | |
276 | return 2; | |
277 | } | |
278 | ||
ee86248c JB |
279 | static int i386_intel_simplify (expressionS *); |
280 | ||
281 | static INLINE int i386_intel_simplify_symbol(symbolS *sym) | |
282 | { | |
283 | int ret = i386_intel_simplify (symbol_get_value_expression (sym)); | |
284 | ||
285 | if (ret == 2) | |
286 | { | |
287 | S_SET_SEGMENT(sym, absolute_section); | |
288 | ret = 1; | |
289 | } | |
290 | return ret; | |
291 | } | |
292 | ||
293 | static int i386_intel_simplify (expressionS *e) | |
294 | { | |
91d6fa6a | 295 | const reg_entry *the_reg = this_operand >= 0 ? i.op[this_operand].regs : NULL; |
ee86248c | 296 | const reg_entry *base = intel_state.base; |
91d6fa6a | 297 | const reg_entry *state_index = intel_state.index; |
ee86248c JB |
298 | int ret; |
299 | ||
300 | if (!intel_syntax) | |
301 | return 1; | |
302 | ||
303 | switch (e->X_op) | |
304 | { | |
305 | case O_index: | |
306 | if (e->X_add_symbol) | |
307 | { | |
308 | if (!i386_intel_simplify_symbol (e->X_add_symbol) | |
91d6fa6a | 309 | || !i386_intel_check(the_reg, intel_state.base, intel_state.index)) |
ee86248c JB |
310 | return 0;; |
311 | } | |
312 | if (!intel_state.in_offset) | |
313 | ++intel_state.in_bracket; | |
314 | ret = i386_intel_simplify_symbol (e->X_op_symbol); | |
315 | if (!intel_state.in_offset) | |
316 | --intel_state.in_bracket; | |
317 | if (!ret) | |
318 | return 0; | |
319 | if (e->X_add_symbol) | |
320 | e->X_op = O_add; | |
321 | else | |
322 | i386_intel_fold (e, e->X_op_symbol); | |
323 | break; | |
324 | ||
325 | case O_offset: | |
6cee4cda | 326 | intel_state.has_offset = 1; |
ee86248c JB |
327 | ++intel_state.in_offset; |
328 | ret = i386_intel_simplify_symbol (e->X_add_symbol); | |
329 | --intel_state.in_offset; | |
91d6fa6a | 330 | if (!ret || !i386_intel_check(the_reg, base, state_index)) |
ee86248c JB |
331 | return 0; |
332 | i386_intel_fold (e, e->X_add_symbol); | |
333 | return ret; | |
334 | ||
335 | case O_byte_ptr: | |
336 | case O_word_ptr: | |
337 | case O_dword_ptr: | |
338 | case O_fword_ptr: | |
339 | case O_qword_ptr: | |
340 | case O_tbyte_ptr: | |
341 | case O_oword_ptr: | |
342 | case O_xmmword_ptr: | |
343 | case O_ymmword_ptr: | |
344 | case O_near_ptr: | |
345 | case O_far_ptr: | |
346 | if (intel_state.op_modifier == O_absent) | |
347 | intel_state.op_modifier = e->X_op; | |
348 | /* FALLTHROUGH */ | |
349 | case O_short: | |
0398aac5 | 350 | if (symbol_get_value_expression (e->X_add_symbol)->X_op == O_register) |
ee86248c JB |
351 | { |
352 | as_bad (_("invalid use of register")); | |
353 | return 0; | |
354 | } | |
355 | if (!i386_intel_simplify_symbol (e->X_add_symbol)) | |
356 | return 0; | |
357 | i386_intel_fold (e, e->X_add_symbol); | |
358 | break; | |
359 | ||
360 | case O_full_ptr: | |
0398aac5 | 361 | if (symbol_get_value_expression (e->X_op_symbol)->X_op == O_register) |
ee86248c JB |
362 | { |
363 | as_bad (_("invalid use of register")); | |
364 | return 0; | |
365 | } | |
366 | if (!i386_intel_simplify_symbol (e->X_op_symbol) | |
91d6fa6a | 367 | || !i386_intel_check(the_reg, intel_state.base, intel_state.index)) |
ee86248c JB |
368 | return 0; |
369 | if (!intel_state.in_offset) | |
370 | intel_state.seg = e->X_add_symbol; | |
371 | i386_intel_fold (e, e->X_op_symbol); | |
372 | break; | |
373 | ||
ee86248c JB |
374 | case O_multiply: |
375 | if (this_operand >= 0 && intel_state.in_bracket) | |
376 | { | |
377 | expressionS *scale = NULL; | |
378 | ||
379 | if (intel_state.index) | |
380 | --scale; | |
381 | ||
382 | if (!intel_state.in_scale++) | |
383 | intel_state.scale_factor = 1; | |
384 | ||
385 | ret = i386_intel_simplify_symbol (e->X_add_symbol); | |
386 | if (ret && !scale && intel_state.index) | |
387 | scale = symbol_get_value_expression (e->X_op_symbol); | |
388 | ||
389 | if (ret) | |
390 | ret = i386_intel_simplify_symbol (e->X_op_symbol); | |
391 | if (ret && !scale && intel_state.index) | |
392 | scale = symbol_get_value_expression (e->X_add_symbol); | |
393 | ||
394 | if (ret && scale && (scale + 1)) | |
395 | { | |
396 | resolve_expression (scale); | |
397 | if (scale->X_op != O_constant | |
398 | || intel_state.index->reg_type.bitfield.reg16) | |
399 | scale->X_add_number = 0; | |
400 | intel_state.scale_factor *= scale->X_add_number; | |
401 | } | |
402 | ||
403 | --intel_state.in_scale; | |
404 | if (!ret) | |
405 | return 0; | |
406 | ||
407 | if (!intel_state.in_scale) | |
408 | switch (intel_state.scale_factor) | |
409 | { | |
410 | case 1: | |
411 | i.log2_scale_factor = 0; | |
412 | break; | |
413 | case 2: | |
414 | i.log2_scale_factor = 1; | |
415 | break; | |
416 | case 4: | |
417 | i.log2_scale_factor = 2; | |
418 | break; | |
419 | case 8: | |
420 | i.log2_scale_factor = 3; | |
421 | break; | |
422 | default: | |
423 | /* esp is invalid as index */ | |
424 | intel_state.index = i386_regtab + REGNAM_EAX + 4; | |
425 | break; | |
426 | } | |
427 | ||
428 | break; | |
429 | } | |
3c7b9c2c L |
430 | |
431 | case O_register: | |
432 | ret = i386_intel_simplify_register (e); | |
433 | if (ret == 2) | |
434 | { | |
435 | gas_assert (e->X_add_number < (unsigned short) -1); | |
436 | e->X_md = (unsigned short) e->X_add_number + 1; | |
437 | e->X_op = O_constant; | |
438 | e->X_add_number = 0; | |
439 | } | |
440 | return ret; | |
441 | ||
442 | case O_constant: | |
443 | if (e->X_md) | |
444 | return i386_intel_simplify_register (e); | |
445 | ||
ee86248c JB |
446 | /* FALLTHROUGH */ |
447 | default: | |
448 | if (e->X_add_symbol && !i386_intel_simplify_symbol (e->X_add_symbol)) | |
449 | return 0; | |
450 | if (e->X_op == O_add || e->X_op == O_subtract) | |
451 | { | |
452 | base = intel_state.base; | |
91d6fa6a | 453 | state_index = intel_state.index; |
ee86248c | 454 | } |
91d6fa6a | 455 | if (!i386_intel_check (the_reg, base, state_index) |
ee86248c | 456 | || (e->X_op_symbol && !i386_intel_simplify_symbol (e->X_op_symbol)) |
91d6fa6a | 457 | || !i386_intel_check (the_reg, |
ee86248c | 458 | e->X_op != O_add ? base : intel_state.base, |
91d6fa6a | 459 | e->X_op != O_add ? state_index : intel_state.index)) |
ee86248c JB |
460 | return 0; |
461 | break; | |
462 | } | |
463 | ||
464 | if (this_operand >= 0 && e->X_op == O_symbol && !intel_state.in_offset) | |
465 | { | |
466 | segT seg = S_GET_SEGMENT (e->X_add_symbol); | |
467 | ||
468 | if (seg != absolute_section | |
469 | && seg != reg_section | |
470 | && seg != expr_section) | |
471 | intel_state.is_mem |= 2 - !intel_state.in_bracket; | |
472 | } | |
473 | ||
474 | return 1; | |
475 | } | |
476 | ||
477 | int i386_need_index_operator (void) | |
478 | { | |
479 | return intel_syntax < 0; | |
480 | } | |
481 | ||
482 | static int | |
483 | i386_intel_operand (char *operand_string, int got_a_float) | |
484 | { | |
485 | char *saved_input_line_pointer, *buf; | |
486 | segT exp_seg; | |
487 | expressionS exp, *expP; | |
488 | char suffix = 0; | |
489 | int ret; | |
490 | ||
491 | /* Initialize state structure. */ | |
492 | intel_state.op_modifier = O_absent; | |
493 | intel_state.is_mem = 0; | |
1acf546e | 494 | intel_state.has_offset = 0; |
ee86248c JB |
495 | intel_state.base = NULL; |
496 | intel_state.index = NULL; | |
497 | intel_state.seg = NULL; | |
498 | operand_type_set (&intel_state.reloc_types, ~0); | |
9c2799c2 NC |
499 | gas_assert (!intel_state.in_offset); |
500 | gas_assert (!intel_state.in_bracket); | |
501 | gas_assert (!intel_state.in_scale); | |
ee86248c JB |
502 | |
503 | saved_input_line_pointer = input_line_pointer; | |
504 | input_line_pointer = buf = xstrdup (operand_string); | |
505 | ||
d160e035 L |
506 | /* A '$' followed by an identifier char is an identifier. Otherwise, |
507 | it's operator '.' followed by an expression. */ | |
508 | if (*buf == '$' && !is_identifier_char (buf[1])) | |
509 | *buf = '.'; | |
510 | ||
ee86248c JB |
511 | intel_syntax = -1; |
512 | memset (&exp, 0, sizeof(exp)); | |
513 | exp_seg = expression (&exp); | |
514 | ret = i386_intel_simplify (&exp); | |
515 | intel_syntax = 1; | |
516 | ||
517 | SKIP_WHITESPACE (); | |
518 | if (!is_end_of_line[(unsigned char) *input_line_pointer]) | |
519 | { | |
520 | as_bad (_("junk `%s' after expression"), input_line_pointer); | |
521 | ret = 0; | |
522 | } | |
523 | else if (exp.X_op == O_illegal || exp.X_op == O_absent) | |
524 | { | |
525 | as_bad (_("invalid expression")); | |
526 | ret = 0; | |
527 | } | |
6cee4cda L |
528 | else if (!intel_state.has_offset |
529 | && input_line_pointer > buf | |
530 | && *(input_line_pointer - 1) == ']') | |
531 | intel_state.is_mem |= 1; | |
ee86248c JB |
532 | |
533 | input_line_pointer = saved_input_line_pointer; | |
534 | free (buf); | |
535 | ||
9c2799c2 NC |
536 | gas_assert (!intel_state.in_offset); |
537 | gas_assert (!intel_state.in_bracket); | |
538 | gas_assert (!intel_state.in_scale); | |
ee86248c JB |
539 | |
540 | if (!ret) | |
541 | return 0; | |
542 | ||
543 | if (intel_state.op_modifier != O_absent | |
544 | && current_templates->start->base_opcode != 0x8d /* lea */) | |
545 | { | |
546 | i.types[this_operand].bitfield.unspecified = 0; | |
547 | ||
548 | switch (intel_state.op_modifier) | |
549 | { | |
550 | case O_byte_ptr: | |
551 | i.types[this_operand].bitfield.byte = 1; | |
552 | suffix = BYTE_MNEM_SUFFIX; | |
553 | break; | |
554 | ||
555 | case O_word_ptr: | |
556 | i.types[this_operand].bitfield.word = 1; | |
557 | if ((current_templates->start->name[0] == 'l' | |
558 | && current_templates->start->name[2] == 's' | |
559 | && current_templates->start->name[3] == 0) | |
560 | || current_templates->start->base_opcode == 0x62 /* bound */) | |
561 | suffix = BYTE_MNEM_SUFFIX; /* so it will cause an error */ | |
562 | else if (got_a_float == 2) /* "fi..." */ | |
563 | suffix = SHORT_MNEM_SUFFIX; | |
564 | else | |
565 | suffix = WORD_MNEM_SUFFIX; | |
566 | break; | |
567 | ||
568 | case O_dword_ptr: | |
569 | i.types[this_operand].bitfield.dword = 1; | |
570 | if ((current_templates->start->name[0] == 'l' | |
571 | && current_templates->start->name[2] == 's' | |
572 | && current_templates->start->name[3] == 0) | |
573 | || current_templates->start->base_opcode == 0x62 /* bound */) | |
574 | suffix = WORD_MNEM_SUFFIX; | |
575 | else if (flag_code == CODE_16BIT | |
576 | && (current_templates->start->opcode_modifier.jump | |
577 | || current_templates->start->opcode_modifier.jumpdword)) | |
578 | suffix = LONG_DOUBLE_MNEM_SUFFIX; | |
579 | else if (got_a_float == 1) /* "f..." */ | |
580 | suffix = SHORT_MNEM_SUFFIX; | |
581 | else | |
582 | suffix = LONG_MNEM_SUFFIX; | |
583 | break; | |
584 | ||
585 | case O_fword_ptr: | |
586 | i.types[this_operand].bitfield.fword = 1; | |
587 | if (current_templates->start->name[0] == 'l' | |
588 | && current_templates->start->name[2] == 's' | |
589 | && current_templates->start->name[3] == 0) | |
590 | suffix = LONG_MNEM_SUFFIX; | |
591 | else if (!got_a_float) | |
592 | { | |
593 | if (flag_code == CODE_16BIT) | |
594 | add_prefix (DATA_PREFIX_OPCODE); | |
595 | suffix = LONG_DOUBLE_MNEM_SUFFIX; | |
596 | } | |
597 | else | |
598 | suffix = BYTE_MNEM_SUFFIX; /* so it will cause an error */ | |
599 | break; | |
600 | ||
601 | case O_qword_ptr: | |
602 | i.types[this_operand].bitfield.qword = 1; | |
603 | if (current_templates->start->base_opcode == 0x62 /* bound */ | |
604 | || got_a_float == 1) /* "f..." */ | |
605 | suffix = LONG_MNEM_SUFFIX; | |
606 | else | |
607 | suffix = QWORD_MNEM_SUFFIX; | |
608 | break; | |
609 | ||
610 | case O_tbyte_ptr: | |
611 | i.types[this_operand].bitfield.tbyte = 1; | |
612 | if (got_a_float == 1) | |
613 | suffix = LONG_DOUBLE_MNEM_SUFFIX; | |
614 | else | |
615 | suffix = BYTE_MNEM_SUFFIX; /* so it will cause an error */ | |
616 | break; | |
617 | ||
618 | case O_oword_ptr: | |
619 | case O_xmmword_ptr: | |
620 | i.types[this_operand].bitfield.xmmword = 1; | |
621 | suffix = XMMWORD_MNEM_SUFFIX; | |
622 | break; | |
623 | ||
624 | case O_ymmword_ptr: | |
625 | i.types[this_operand].bitfield.ymmword = 1; | |
626 | suffix = YMMWORD_MNEM_SUFFIX; | |
627 | break; | |
628 | ||
629 | case O_far_ptr: | |
630 | suffix = LONG_DOUBLE_MNEM_SUFFIX; | |
631 | /* FALLTHROUGH */ | |
632 | case O_near_ptr: | |
633 | if (!current_templates->start->opcode_modifier.jump | |
634 | && !current_templates->start->opcode_modifier.jumpdword) | |
635 | suffix = got_a_float /* so it will cause an error */ | |
636 | ? BYTE_MNEM_SUFFIX | |
637 | : LONG_DOUBLE_MNEM_SUFFIX; | |
638 | break; | |
639 | ||
640 | default: | |
641 | BAD_CASE (intel_state.op_modifier); | |
642 | break; | |
643 | } | |
644 | ||
645 | if (!i.suffix) | |
646 | i.suffix = suffix; | |
647 | else if (i.suffix != suffix) | |
648 | { | |
649 | as_bad (_("conflicting operand size modifiers")); | |
650 | return 0; | |
651 | } | |
652 | } | |
653 | ||
654 | /* Operands for jump/call need special consideration. */ | |
655 | if (current_templates->start->opcode_modifier.jump | |
656 | || current_templates->start->opcode_modifier.jumpdword | |
657 | || current_templates->start->opcode_modifier.jumpintersegment) | |
658 | { | |
659 | if (i.op[this_operand].regs || intel_state.base || intel_state.index | |
660 | || intel_state.is_mem > 1) | |
661 | i.types[this_operand].bitfield.jumpabsolute = 1; | |
662 | else | |
663 | switch (intel_state.op_modifier) | |
664 | { | |
665 | case O_near_ptr: | |
666 | if (intel_state.seg) | |
667 | i.types[this_operand].bitfield.jumpabsolute = 1; | |
668 | else | |
669 | intel_state.is_mem = 1; | |
670 | break; | |
671 | case O_far_ptr: | |
672 | case O_absent: | |
673 | if (!intel_state.seg) | |
674 | { | |
675 | intel_state.is_mem = 1; | |
676 | if (intel_state.op_modifier == O_absent) | |
677 | break; | |
678 | as_bad (_("cannot infer the segment part of the operand")); | |
679 | return 0; | |
680 | } | |
681 | else if (S_GET_SEGMENT (intel_state.seg) == reg_section) | |
682 | i.types[this_operand].bitfield.jumpabsolute = 1; | |
683 | else | |
684 | { | |
685 | i386_operand_type types; | |
686 | ||
687 | if (i.imm_operands >= MAX_IMMEDIATE_OPERANDS) | |
688 | { | |
689 | as_bad (_("at most %d immediate operands are allowed"), | |
690 | MAX_IMMEDIATE_OPERANDS); | |
691 | return 0; | |
692 | } | |
693 | expP = &im_expressions[i.imm_operands++]; | |
694 | memset (expP, 0, sizeof(*expP)); | |
695 | expP->X_op = O_symbol; | |
696 | expP->X_add_symbol = intel_state.seg; | |
697 | i.op[this_operand].imms = expP; | |
698 | ||
699 | resolve_expression (expP); | |
700 | operand_type_set (&types, ~0); | |
701 | if (!i386_finalize_immediate (S_GET_SEGMENT (intel_state.seg), | |
702 | expP, types, operand_string)) | |
703 | return 0; | |
704 | if (i.operands < MAX_OPERANDS) | |
705 | { | |
706 | this_operand = i.operands++; | |
707 | i.types[this_operand].bitfield.unspecified = 1; | |
708 | } | |
709 | if (suffix == LONG_DOUBLE_MNEM_SUFFIX) | |
710 | i.suffix = 0; | |
711 | intel_state.seg = NULL; | |
712 | intel_state.is_mem = 0; | |
713 | } | |
714 | break; | |
715 | default: | |
716 | i.types[this_operand].bitfield.jumpabsolute = 1; | |
717 | break; | |
718 | } | |
719 | if (i.types[this_operand].bitfield.jumpabsolute) | |
720 | intel_state.is_mem |= 1; | |
721 | } | |
722 | else if (intel_state.seg) | |
723 | intel_state.is_mem |= 1; | |
724 | ||
725 | if (i.op[this_operand].regs) | |
726 | { | |
727 | i386_operand_type temp; | |
728 | ||
729 | /* Register operand. */ | |
730 | if (intel_state.base || intel_state.index || intel_state.seg) | |
731 | { | |
732 | as_bad (_("invalid operand")); | |
733 | return 0; | |
734 | } | |
735 | ||
736 | temp = i.op[this_operand].regs->reg_type; | |
737 | temp.bitfield.baseindex = 0; | |
738 | i.types[this_operand] = operand_type_or (i.types[this_operand], temp); | |
739 | i.types[this_operand].bitfield.unspecified = 0; | |
740 | ++i.reg_operands; | |
741 | } | |
742 | else if (intel_state.base || intel_state.index || intel_state.seg | |
743 | || intel_state.is_mem) | |
744 | { | |
745 | /* Memory operand. */ | |
746 | if (i.mem_operands | |
747 | >= 2 - !current_templates->start->opcode_modifier.isstring) | |
748 | { | |
313c53d1 L |
749 | /* Handle |
750 | ||
751 | call 0x9090,0x90909090 | |
752 | lcall 0x9090,0x90909090 | |
753 | jmp 0x9090,0x90909090 | |
754 | ljmp 0x9090,0x90909090 | |
755 | */ | |
756 | ||
757 | if ((current_templates->start->opcode_modifier.jumpintersegment | |
758 | || current_templates->start->opcode_modifier.jumpdword | |
759 | || current_templates->start->opcode_modifier.jump) | |
760 | && this_operand == 1 | |
761 | && intel_state.seg == NULL | |
762 | && i.mem_operands == 1 | |
763 | && i.disp_operands == 1 | |
764 | && intel_state.op_modifier == O_absent) | |
765 | { | |
766 | /* Try to process the first operand as immediate, */ | |
767 | this_operand = 0; | |
768 | if (i386_finalize_immediate (exp_seg, i.op[0].imms, | |
769 | intel_state.reloc_types, | |
770 | NULL)) | |
771 | { | |
772 | this_operand = 1; | |
773 | expP = &im_expressions[0]; | |
774 | i.op[this_operand].imms = expP; | |
775 | *expP = exp; | |
776 | ||
777 | /* Try to process the second operand as immediate, */ | |
778 | if (i386_finalize_immediate (exp_seg, expP, | |
779 | intel_state.reloc_types, | |
780 | NULL)) | |
781 | { | |
782 | i.mem_operands = 0; | |
783 | i.disp_operands = 0; | |
784 | i.imm_operands = 2; | |
785 | i.types[0].bitfield.mem = 0; | |
786 | i.types[0].bitfield.disp16 = 0; | |
787 | i.types[0].bitfield.disp32 = 0; | |
788 | i.types[0].bitfield.disp32s = 0; | |
789 | return 1; | |
790 | } | |
791 | } | |
792 | } | |
793 | ||
ee86248c JB |
794 | as_bad (_("too many memory references for `%s'"), |
795 | current_templates->start->name); | |
796 | return 0; | |
797 | } | |
798 | ||
799 | expP = &disp_expressions[i.disp_operands]; | |
800 | memcpy (expP, &exp, sizeof(exp)); | |
801 | resolve_expression (expP); | |
802 | ||
803 | if (expP->X_op != O_constant || expP->X_add_number | |
804 | || (!intel_state.base && !intel_state.index)) | |
805 | { | |
806 | i.op[this_operand].disps = expP; | |
807 | i.disp_operands++; | |
808 | ||
809 | if (flag_code == CODE_64BIT) | |
810 | { | |
811 | i.types[this_operand].bitfield.disp32 = 1; | |
812 | if (!i.prefix[ADDR_PREFIX]) | |
813 | { | |
814 | i.types[this_operand].bitfield.disp64 = 1; | |
815 | i.types[this_operand].bitfield.disp32s = 1; | |
816 | } | |
817 | } | |
818 | else if (!i.prefix[ADDR_PREFIX] ^ (flag_code == CODE_16BIT)) | |
819 | i.types[this_operand].bitfield.disp32 = 1; | |
820 | else | |
821 | i.types[this_operand].bitfield.disp16 = 1; | |
822 | ||
823 | #if defined (OBJ_AOUT) || defined (OBJ_MAYBE_AOUT) | |
824 | /* | |
825 | * exp_seg is used only for verification in | |
826 | * i386_finalize_displacement, and we can end up seeing reg_section | |
827 | * here - but we know we removed all registers from the expression | |
828 | * (or error-ed on any remaining ones) in i386_intel_simplify. I | |
829 | * consider the check in i386_finalize_displacement bogus anyway, in | |
830 | * particular because it doesn't allow for expr_section, so I'd | |
831 | * rather see that check (and the similar one in | |
832 | * i386_finalize_immediate) use SEG_NORMAL(), but not being an a.out | |
833 | * expert I can't really say whether that would have other bad side | |
834 | * effects. | |
835 | */ | |
836 | if (OUTPUT_FLAVOR == bfd_target_aout_flavour | |
837 | && exp_seg == reg_section) | |
838 | exp_seg = expP->X_op != O_constant ? undefined_section | |
839 | : absolute_section; | |
840 | #endif | |
841 | ||
842 | if (!i386_finalize_displacement (exp_seg, expP, | |
843 | intel_state.reloc_types, | |
844 | operand_string)) | |
845 | return 0; | |
846 | } | |
847 | ||
848 | if (intel_state.base || intel_state.index) | |
849 | i.types[this_operand].bitfield.baseindex = 1; | |
850 | ||
851 | if (intel_state.seg) | |
852 | { | |
853 | for (;;) | |
854 | { | |
855 | expP = symbol_get_value_expression (intel_state.seg); | |
856 | if (expP->X_op != O_full_ptr) | |
857 | break; | |
858 | intel_state.seg = expP->X_add_symbol; | |
859 | } | |
0398aac5 | 860 | if (expP->X_op != O_register) |
ee86248c JB |
861 | { |
862 | as_bad (_("segment register name expected")); | |
863 | return 0; | |
864 | } | |
865 | if (!i386_regtab[expP->X_add_number].reg_type.bitfield.sreg2 | |
866 | && !i386_regtab[expP->X_add_number].reg_type.bitfield.sreg3) | |
867 | { | |
868 | as_bad (_("invalid use of register")); | |
869 | return 0; | |
870 | } | |
871 | switch (i386_regtab[expP->X_add_number].reg_num) | |
872 | { | |
873 | case 0: i.seg[i.mem_operands] = &es; break; | |
874 | case 1: i.seg[i.mem_operands] = &cs; break; | |
875 | case 2: i.seg[i.mem_operands] = &ss; break; | |
876 | case 3: i.seg[i.mem_operands] = &ds; break; | |
877 | case 4: i.seg[i.mem_operands] = &fs; break; | |
878 | case 5: i.seg[i.mem_operands] = &gs; break; | |
879 | case RegFlat: i.seg[i.mem_operands] = NULL; break; | |
880 | } | |
881 | } | |
882 | ||
883 | /* Swap base and index in 16-bit memory operands like | |
884 | [si+bx]. Since i386_index_check is also used in AT&T | |
885 | mode we have to do that here. */ | |
886 | if (intel_state.base | |
887 | && intel_state.index | |
888 | && intel_state.base->reg_type.bitfield.reg16 | |
889 | && intel_state.index->reg_type.bitfield.reg16 | |
890 | && intel_state.base->reg_num >= 6 | |
891 | && intel_state.index->reg_num < 6) | |
892 | { | |
893 | i.base_reg = intel_state.index; | |
894 | i.index_reg = intel_state.base; | |
895 | } | |
896 | else | |
897 | { | |
898 | i.base_reg = intel_state.base; | |
899 | i.index_reg = intel_state.index; | |
900 | } | |
901 | ||
902 | if (!i386_index_check (operand_string)) | |
903 | return 0; | |
904 | ||
905 | i.types[this_operand].bitfield.mem = 1; | |
906 | ++i.mem_operands; | |
907 | } | |
908 | else | |
909 | { | |
910 | /* Immediate. */ | |
911 | if (i.imm_operands >= MAX_IMMEDIATE_OPERANDS) | |
912 | { | |
913 | as_bad (_("at most %d immediate operands are allowed"), | |
914 | MAX_IMMEDIATE_OPERANDS); | |
915 | return 0; | |
916 | } | |
917 | ||
918 | expP = &im_expressions[i.imm_operands++]; | |
919 | i.op[this_operand].imms = expP; | |
920 | *expP = exp; | |
921 | ||
922 | return i386_finalize_immediate (exp_seg, expP, intel_state.reloc_types, | |
923 | operand_string); | |
924 | } | |
925 | ||
926 | return 1; | |
927 | } |