1 /* tc-i386.c -- Assemble Intel syntax code for ix86/x86-64
2 Copyright (C) 2009-2021 Free Software Foundation, Inc.
4 This file is part of GAS, the GNU Assembler.
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)
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.
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
23 operatorT op_modifier
; /* Operand modifier. */
24 int is_mem
; /* 1 if operand is memory reference. */
25 int is_indirect
; /* 1 if operand is indirect reference. */
26 int has_offset
; /* 1 if operand has offset. */
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 multiplication operand
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. */
39 /* offset X_add_symbol */
40 #define O_offset O_md32
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
47 /* byte ptr X_add_symbol */
48 #define O_byte_ptr O_md28
49 /* word ptr X_add_symbol */
50 #define O_word_ptr O_md27
51 /* dword ptr X_add_symbol */
52 #define O_dword_ptr O_md26
53 /* qword ptr X_add_symbol */
54 #define O_qword_ptr O_md25
55 /* mmword ptr X_add_symbol */
56 #define O_mmword_ptr O_qword_ptr
57 /* fword ptr X_add_symbol */
58 #define O_fword_ptr O_md24
59 /* tbyte ptr X_add_symbol */
60 #define O_tbyte_ptr O_md23
61 /* oword ptr X_add_symbol */
62 #define O_oword_ptr O_md22
63 /* xmmword ptr X_add_symbol */
64 #define O_xmmword_ptr O_oword_ptr
65 /* ymmword ptr X_add_symbol */
66 #define O_ymmword_ptr O_md21
67 /* zmmword ptr X_add_symbol */
68 #define O_zmmword_ptr O_md20
74 unsigned int operands
;
76 const i386_operators
[] =
78 { "and", O_bit_and
, 2 },
84 { "mod", O_modulus
, 2 },
86 { "not", O_bit_not
, 1 },
87 { "offset", O_offset
, 1 },
88 { "or", O_bit_inclusive_or
, 2 },
89 { "shl", O_left_shift
, 2 },
90 { "short", O_short
, 1 },
91 { "shr", O_right_shift
, 2 },
92 { "xor", O_bit_exclusive_or
, 2 },
93 { NULL
, O_illegal
, 0 }
100 unsigned short sz
[3];
104 #define I386_TYPE(t, n) { #t, O_##t##_ptr, { n, n, n } }
110 I386_TYPE(mmword
, 8),
111 I386_TYPE(tbyte
, 10),
112 I386_TYPE(oword
, 16),
113 I386_TYPE(xmmword
, 16),
114 I386_TYPE(ymmword
, 32),
115 I386_TYPE(zmmword
, 64),
117 { "near", O_near_ptr
, { 0xff04, 0xff02, 0xff08 } },
118 { "far", O_far_ptr
, { 0xff06, 0xff05, 0xff06 } },
119 { NULL
, O_illegal
, { 0, 0, 0 } }
122 operatorT
i386_operator (const char *name
, unsigned int operands
, char *pc
)
126 #ifdef SVR4_COMMENT_CHARS
127 if (!name
&& operands
== 2 && *input_line_pointer
== '\\')
128 switch (input_line_pointer
[1])
130 case '/': input_line_pointer
+= 2; return O_divide
;
131 case '%': input_line_pointer
+= 2; return O_modulus
;
132 case '*': input_line_pointer
+= 2; return O_multiply
;
143 switch (*input_line_pointer
)
146 ++input_line_pointer
;
149 ++input_line_pointer
;
152 if (this_operand
>= 0 && i
.reloc
[this_operand
] == NO_RELOC
)
155 char *gotfree_input_line
= lex_got (&i
.reloc
[this_operand
],
157 &intel_state
.reloc_types
);
159 if (!gotfree_input_line
)
161 free (gotfree_input_line
);
162 *input_line_pointer
++ = '+';
163 memset (input_line_pointer
, '0', adjust
- 1);
164 input_line_pointer
[adjust
- 1] = ' ';
172 for (j
= 0; i386_operators
[j
].name
; ++j
)
173 if (strcasecmp (i386_operators
[j
].name
, name
) == 0)
175 if (i386_operators
[j
].operands
176 && i386_operators
[j
].operands
!= operands
)
178 return i386_operators
[j
].op
;
181 for (j
= 0; i386_types
[j
].name
; ++j
)
182 if (strcasecmp (i386_types
[j
].name
, name
) == 0)
185 if (i386_types
[j
].name
&& *pc
== ' ')
190 ++input_line_pointer
;
191 c
= get_symbol_name (&pname
);
193 if (strcasecmp (pname
, "ptr") == 0)
195 /* FIXME: What if c == '"' ? */
198 if (intel_syntax
> 0 || operands
!= 1)
200 return i386_types
[j
].op
;
203 (void) restore_line_pointer (c
);
204 input_line_pointer
= pname
- 1;
210 static int i386_intel_parse_name (const char *name
, expressionS
*e
)
214 if (! strcmp (name
, "$"))
216 current_location (e
);
220 for (j
= 0; i386_types
[j
].name
; ++j
)
221 if (strcasecmp(i386_types
[j
].name
, name
) == 0)
223 e
->X_op
= O_constant
;
224 e
->X_add_number
= i386_types
[j
].sz
[flag_code
];
225 e
->X_add_symbol
= NULL
;
226 e
->X_op_symbol
= NULL
;
233 static INLINE
int i386_intel_check (const reg_entry
*rreg
,
234 const reg_entry
*base
,
235 const reg_entry
*iindex
)
237 if ((this_operand
>= 0
238 && rreg
!= i
.op
[this_operand
].regs
)
239 || base
!= intel_state
.base
240 || iindex
!= intel_state
.index
)
242 as_bad (_("invalid use of register"));
248 static INLINE
void i386_intel_fold (expressionS
*e
, symbolS
*sym
)
250 expressionS
*exp
= symbol_get_value_expression (sym
);
251 if (S_GET_SEGMENT (sym
) == absolute_section
)
253 offsetT val
= e
->X_add_number
;
256 e
->X_add_number
+= val
;
260 if (exp
->X_op
== O_symbol
261 && strcmp (S_GET_NAME (exp
->X_add_symbol
),
262 GLOBAL_OFFSET_TABLE_NAME
) == 0)
263 sym
= exp
->X_add_symbol
;
264 e
->X_add_symbol
= sym
;
265 e
->X_op_symbol
= NULL
;
271 i386_intel_simplify_register (expressionS
*e
)
275 if (this_operand
< 0 || intel_state
.in_offset
)
277 as_bad (_("invalid use of register"));
281 if (e
->X_op
== O_register
)
282 reg_num
= e
->X_add_number
;
284 reg_num
= e
->X_md
- 1;
286 if (reg_num
< 0 || reg_num
>= (int) i386_regtab_size
)
288 as_bad (_("invalid register number"));
292 if (!intel_state
.in_bracket
)
294 if (i
.op
[this_operand
].regs
)
296 as_bad (_("invalid use of register"));
299 if (i386_regtab
[reg_num
].reg_type
.bitfield
.class == SReg
300 && i386_regtab
[reg_num
].reg_num
== RegFlat
)
302 as_bad (_("invalid use of pseudo-register"));
305 i
.op
[this_operand
].regs
= i386_regtab
+ reg_num
;
307 else if (!intel_state
.index
308 && (i386_regtab
[reg_num
].reg_type
.bitfield
.xmmword
309 || i386_regtab
[reg_num
].reg_type
.bitfield
.ymmword
310 || i386_regtab
[reg_num
].reg_type
.bitfield
.zmmword
311 || i386_regtab
[reg_num
].reg_num
== RegIZ
))
312 intel_state
.index
= i386_regtab
+ reg_num
;
313 else if (!intel_state
.base
&& !intel_state
.in_scale
)
314 intel_state
.base
= i386_regtab
+ reg_num
;
315 else if (!intel_state
.index
)
317 if (intel_state
.in_scale
318 || current_templates
->start
->base_opcode
== 0xf30f1b /* bndmk */
319 || (current_templates
->start
->base_opcode
& ~1) == 0x0f1a /* bnd{ld,st}x */
320 || i386_regtab
[reg_num
].reg_type
.bitfield
.baseindex
)
321 intel_state
.index
= i386_regtab
+ reg_num
;
324 /* Convert base to index and make ESP/RSP the base. */
325 intel_state
.index
= intel_state
.base
;
326 intel_state
.base
= i386_regtab
+ reg_num
;
331 /* esp is invalid as index */
332 intel_state
.index
= i386_regtab
+ REGNAM_EAX
+ ESP_REG_NUM
;
337 static int i386_intel_simplify (expressionS
*);
339 static INLINE
int i386_intel_simplify_symbol(symbolS
*sym
)
341 int ret
= i386_intel_simplify (symbol_get_value_expression (sym
));
345 S_SET_SEGMENT(sym
, absolute_section
);
351 static int i386_intel_simplify (expressionS
*e
)
353 const reg_entry
*the_reg
= (this_operand
>= 0
354 ? i
.op
[this_operand
].regs
: NULL
);
355 const reg_entry
*base
= intel_state
.base
;
356 const reg_entry
*state_index
= intel_state
.index
;
367 if (!i386_intel_simplify_symbol (e
->X_add_symbol
)
368 || !i386_intel_check(the_reg
, intel_state
.base
,
372 if (!intel_state
.in_offset
)
373 ++intel_state
.in_bracket
;
374 ret
= i386_intel_simplify_symbol (e
->X_op_symbol
);
375 if (!intel_state
.in_offset
)
376 --intel_state
.in_bracket
;
382 i386_intel_fold (e
, e
->X_op_symbol
);
386 intel_state
.has_offset
= 1;
387 ++intel_state
.in_offset
;
388 ret
= i386_intel_simplify_symbol (e
->X_add_symbol
);
389 --intel_state
.in_offset
;
390 if (!ret
|| !i386_intel_check(the_reg
, base
, state_index
))
392 i386_intel_fold (e
, e
->X_add_symbol
);
399 case O_qword_ptr
: /* O_mmword_ptr */
401 case O_oword_ptr
: /* O_xmmword_ptr */
406 if (intel_state
.op_modifier
== O_absent
)
407 intel_state
.op_modifier
= e
->X_op
;
410 if (symbol_get_value_expression (e
->X_add_symbol
)->X_op
413 as_bad (_("invalid use of register"));
416 if (!i386_intel_simplify_symbol (e
->X_add_symbol
))
418 i386_intel_fold (e
, e
->X_add_symbol
);
422 if (symbol_get_value_expression (e
->X_op_symbol
)->X_op
425 as_bad (_("invalid use of register"));
428 if (!i386_intel_simplify_symbol (e
->X_op_symbol
)
429 || !i386_intel_check(the_reg
, intel_state
.base
,
432 if (!intel_state
.in_offset
)
434 if (!intel_state
.seg
)
435 intel_state
.seg
= e
->X_add_symbol
;
440 exp
.X_op
= O_full_ptr
;
441 exp
.X_add_symbol
= e
->X_add_symbol
;
442 exp
.X_op_symbol
= intel_state
.seg
;
443 intel_state
.seg
= make_expr_symbol (&exp
);
446 i386_intel_fold (e
, e
->X_op_symbol
);
450 if (this_operand
>= 0 && intel_state
.in_bracket
)
452 expressionS
*scale
= NULL
;
453 int has_index
= (intel_state
.index
!= NULL
);
455 if (!intel_state
.in_scale
++)
456 intel_state
.scale_factor
= 1;
458 ret
= i386_intel_simplify_symbol (e
->X_add_symbol
);
459 if (ret
&& !has_index
&& intel_state
.index
)
460 scale
= symbol_get_value_expression (e
->X_op_symbol
);
463 ret
= i386_intel_simplify_symbol (e
->X_op_symbol
);
464 if (ret
&& !scale
&& !has_index
&& intel_state
.index
)
465 scale
= symbol_get_value_expression (e
->X_add_symbol
);
469 resolve_expression (scale
);
470 if (scale
->X_op
!= O_constant
471 || intel_state
.index
->reg_type
.bitfield
.word
)
472 scale
->X_add_number
= 0;
473 intel_state
.scale_factor
*= scale
->X_add_number
;
476 --intel_state
.in_scale
;
480 if (!intel_state
.in_scale
)
481 switch (intel_state
.scale_factor
)
484 i
.log2_scale_factor
= 0;
487 i
.log2_scale_factor
= 1;
490 i
.log2_scale_factor
= 2;
493 i
.log2_scale_factor
= 3;
496 /* esp is invalid as index */
497 intel_state
.index
= i386_regtab
+ REGNAM_EAX
+ ESP_REG_NUM
;
506 ret
= i386_intel_simplify_register (e
);
509 gas_assert (e
->X_add_number
< (unsigned short) -1);
510 e
->X_md
= (unsigned short) e
->X_add_number
+ 1;
511 e
->X_op
= O_constant
;
518 return i386_intel_simplify_register (e
);
524 && !i386_intel_simplify_symbol (e
->X_add_symbol
))
526 if (e
->X_op
== O_add
|| e
->X_op
== O_subtract
)
528 base
= intel_state
.base
;
529 state_index
= intel_state
.index
;
531 if (!i386_intel_check (the_reg
, base
, state_index
)
533 && !i386_intel_simplify_symbol (e
->X_op_symbol
))
534 || !i386_intel_check (the_reg
,
536 ? base
: intel_state
.base
),
538 ? state_index
: intel_state
.index
)))
543 if (this_operand
>= 0
544 && e
->X_op
== O_symbol
545 && !intel_state
.in_offset
)
547 segT seg
= S_GET_SEGMENT (e
->X_add_symbol
);
549 if (seg
!= absolute_section
550 && seg
!= reg_section
551 && seg
!= expr_section
)
552 intel_state
.is_mem
|= 2 - !intel_state
.in_bracket
;
558 int i386_need_index_operator (void)
560 return intel_syntax
< 0;
564 i386_intel_operand (char *operand_string
, int got_a_float
)
566 char *saved_input_line_pointer
, *buf
;
568 expressionS exp
, *expP
;
572 /* Handle vector immediates. */
573 if (RC_SAE_immediate (operand_string
))
576 /* Initialize state structure. */
577 intel_state
.op_modifier
= O_absent
;
578 intel_state
.is_mem
= 0;
579 intel_state
.is_indirect
= 0;
580 intel_state
.has_offset
= 0;
581 intel_state
.base
= NULL
;
582 intel_state
.index
= NULL
;
583 intel_state
.seg
= NULL
;
584 operand_type_set (&intel_state
.reloc_types
, ~0);
585 gas_assert (!intel_state
.in_offset
);
586 gas_assert (!intel_state
.in_bracket
);
587 gas_assert (!intel_state
.in_scale
);
589 saved_input_line_pointer
= input_line_pointer
;
590 input_line_pointer
= buf
= xstrdup (operand_string
);
593 memset (&exp
, 0, sizeof(exp
));
594 exp_seg
= expression (&exp
);
595 ret
= i386_intel_simplify (&exp
);
600 /* Handle vector operations. */
601 if (*input_line_pointer
== '{')
603 char *end
= check_VecOperations (input_line_pointer
, NULL
);
605 input_line_pointer
= end
;
610 if (!is_end_of_line
[(unsigned char) *input_line_pointer
])
613 as_bad (_("junk `%s' after expression"), input_line_pointer
);
616 else if (exp
.X_op
== O_illegal
|| exp
.X_op
== O_absent
)
619 as_bad (_("invalid expression"));
622 else if (!intel_state
.has_offset
623 && input_line_pointer
> buf
624 && *(input_line_pointer
- 1) == ']')
626 intel_state
.is_mem
|= 1;
627 intel_state
.is_indirect
= 1;
630 input_line_pointer
= saved_input_line_pointer
;
633 gas_assert (!intel_state
.in_offset
);
634 gas_assert (!intel_state
.in_bracket
);
635 gas_assert (!intel_state
.in_scale
);
640 if (intel_state
.op_modifier
!= O_absent
641 && current_templates
->start
->base_opcode
!= 0x8d /* lea */)
643 i
.types
[this_operand
].bitfield
.unspecified
= 0;
645 switch (intel_state
.op_modifier
)
648 i
.types
[this_operand
].bitfield
.byte
= 1;
649 suffix
= BYTE_MNEM_SUFFIX
;
653 i
.types
[this_operand
].bitfield
.word
= 1;
654 if (got_a_float
== 2) /* "fi..." */
655 suffix
= SHORT_MNEM_SUFFIX
;
657 suffix
= WORD_MNEM_SUFFIX
;
661 i
.types
[this_operand
].bitfield
.dword
= 1;
662 if ((current_templates
->start
->name
[0] == 'l'
663 && current_templates
->start
->name
[2] == 's'
664 && current_templates
->start
->name
[3] == 0)
665 || current_templates
->start
->base_opcode
== 0x62 /* bound */)
666 suffix
= WORD_MNEM_SUFFIX
;
667 else if (flag_code
!= CODE_32BIT
668 && (current_templates
->start
->opcode_modifier
.jump
== JUMP
669 || current_templates
->start
->opcode_modifier
.jump
671 suffix
= flag_code
== CODE_16BIT
? LONG_DOUBLE_MNEM_SUFFIX
673 else if (got_a_float
== 1) /* "f..." */
674 suffix
= SHORT_MNEM_SUFFIX
;
676 suffix
= LONG_MNEM_SUFFIX
;
680 i
.types
[this_operand
].bitfield
.fword
= 1;
681 if (current_templates
->start
->name
[0] == 'l'
682 && current_templates
->start
->name
[2] == 's'
683 && current_templates
->start
->name
[3] == 0)
684 suffix
= LONG_MNEM_SUFFIX
;
685 else if (!got_a_float
)
687 if (flag_code
== CODE_16BIT
)
688 add_prefix (DATA_PREFIX_OPCODE
);
689 suffix
= LONG_DOUBLE_MNEM_SUFFIX
;
693 case O_qword_ptr
: /* O_mmword_ptr */
694 i
.types
[this_operand
].bitfield
.qword
= 1;
695 if (current_templates
->start
->base_opcode
== 0x62 /* bound */
696 || got_a_float
== 1) /* "f..." */
697 suffix
= LONG_MNEM_SUFFIX
;
699 suffix
= QWORD_MNEM_SUFFIX
;
703 i
.types
[this_operand
].bitfield
.tbyte
= 1;
704 if (got_a_float
== 1)
705 suffix
= LONG_DOUBLE_MNEM_SUFFIX
;
706 else if ((current_templates
->start
->operand_types
[0].bitfield
.fword
707 || current_templates
->start
->operand_types
[0].bitfield
.tbyte
708 || current_templates
->start
->opcode_modifier
.jump
== JUMP_DWORD
709 || current_templates
->start
->opcode_modifier
.jump
== JUMP
)
710 && flag_code
== CODE_64BIT
)
711 suffix
= QWORD_MNEM_SUFFIX
; /* l[fgs]s, [ls][gi]dt, call, jmp */
713 i
.types
[this_operand
].bitfield
.byte
= 1; /* cause an error */
716 case O_oword_ptr
: /* O_xmmword_ptr */
717 i
.types
[this_operand
].bitfield
.xmmword
= 1;
721 i
.types
[this_operand
].bitfield
.ymmword
= 1;
725 i
.types
[this_operand
].bitfield
.zmmword
= 1;
729 suffix
= LONG_DOUBLE_MNEM_SUFFIX
;
732 if (current_templates
->start
->opcode_modifier
.jump
!= JUMP
733 && current_templates
->start
->opcode_modifier
.jump
!= JUMP_DWORD
)
736 i
.types
[this_operand
].bitfield
.byte
= 1;
737 i
.types
[this_operand
].bitfield
.tbyte
= 1;
743 BAD_CASE (intel_state
.op_modifier
);
749 else if (i
.suffix
!= suffix
)
751 as_bad (_("conflicting operand size modifiers"));
756 /* Operands for jump/call need special consideration. */
757 if (current_templates
->start
->opcode_modifier
.jump
== JUMP
758 || current_templates
->start
->opcode_modifier
.jump
== JUMP_DWORD
759 || current_templates
->start
->opcode_modifier
.jump
== JUMP_INTERSEGMENT
)
761 bfd_boolean jumpabsolute
= FALSE
;
763 if (i
.op
[this_operand
].regs
766 || intel_state
.is_mem
> 1)
769 switch (intel_state
.op_modifier
)
775 intel_state
.is_mem
= 1;
779 if (!intel_state
.seg
)
781 intel_state
.is_mem
= 1;
782 if (intel_state
.op_modifier
== O_absent
)
784 if (intel_state
.is_indirect
== 1)
788 as_bad (_("cannot infer the segment part of the operand"));
791 else if (S_GET_SEGMENT (intel_state
.seg
) == reg_section
)
795 i386_operand_type types
;
797 if (i
.imm_operands
>= MAX_IMMEDIATE_OPERANDS
)
799 as_bad (_("at most %d immediate operands are allowed"),
800 MAX_IMMEDIATE_OPERANDS
);
803 expP
= &im_expressions
[i
.imm_operands
++];
804 memset (expP
, 0, sizeof(*expP
));
805 expP
->X_op
= O_symbol
;
806 expP
->X_add_symbol
= intel_state
.seg
;
807 i
.op
[this_operand
].imms
= expP
;
809 resolve_expression (expP
);
810 operand_type_set (&types
, ~0);
811 if (!i386_finalize_immediate (S_GET_SEGMENT (intel_state
.seg
),
812 expP
, types
, operand_string
))
814 if (i
.operands
< MAX_OPERANDS
)
816 this_operand
= i
.operands
++;
817 i
.types
[this_operand
].bitfield
.unspecified
= 1;
819 if (suffix
== LONG_DOUBLE_MNEM_SUFFIX
)
821 intel_state
.seg
= NULL
;
822 intel_state
.is_mem
= 0;
831 i
.jumpabsolute
= TRUE
;
832 intel_state
.is_mem
|= 1;
835 else if (intel_state
.seg
)
836 intel_state
.is_mem
|= 1;
838 if (i
.op
[this_operand
].regs
)
840 i386_operand_type temp
;
842 /* Register operand. */
843 if (intel_state
.base
|| intel_state
.index
|| intel_state
.seg
)
845 as_bad (_("invalid operand"));
849 temp
= i
.op
[this_operand
].regs
->reg_type
;
850 temp
.bitfield
.baseindex
= 0;
851 i
.types
[this_operand
] = operand_type_or (i
.types
[this_operand
],
853 i
.types
[this_operand
].bitfield
.unspecified
= 0;
856 else if (intel_state
.base
859 || intel_state
.is_mem
)
861 /* Memory operand. */
862 if (i
.mem_operands
== 1 && !maybe_adjust_templates ())
864 if ((int) i
.mem_operands
865 >= 2 - !current_templates
->start
->opcode_modifier
.isstring
)
869 call 0x9090,0x90909090
870 lcall 0x9090,0x90909090
871 jmp 0x9090,0x90909090
872 ljmp 0x9090,0x90909090
875 if ((current_templates
->start
->opcode_modifier
.jump
== JUMP_INTERSEGMENT
876 || current_templates
->start
->opcode_modifier
.jump
== JUMP_DWORD
877 || current_templates
->start
->opcode_modifier
.jump
== JUMP
)
879 && intel_state
.seg
== NULL
880 && i
.mem_operands
== 1
881 && i
.disp_operands
== 1
882 && intel_state
.op_modifier
== O_absent
)
884 /* Try to process the first operand as immediate, */
886 if (i386_finalize_immediate (exp_seg
, i
.op
[0].imms
,
887 intel_state
.reloc_types
,
891 expP
= &im_expressions
[0];
892 i
.op
[this_operand
].imms
= expP
;
895 /* Try to process the second operand as immediate, */
896 if (i386_finalize_immediate (exp_seg
, expP
,
897 intel_state
.reloc_types
,
903 i
.flags
[0] &= ~Operand_Mem
;
904 i
.types
[0].bitfield
.disp16
= 0;
905 i
.types
[0].bitfield
.disp32
= 0;
906 i
.types
[0].bitfield
.disp32s
= 0;
912 as_bad (_("too many memory references for `%s'"),
913 current_templates
->start
->name
);
917 /* Swap base and index in 16-bit memory operands like
918 [si+bx]. Since i386_index_check is also used in AT&T
919 mode we have to do this here. */
922 && intel_state
.base
->reg_type
.bitfield
.word
923 && intel_state
.index
->reg_type
.bitfield
.word
924 && intel_state
.base
->reg_num
>= 6
925 && intel_state
.index
->reg_num
< 6)
927 i
.base_reg
= intel_state
.index
;
928 i
.index_reg
= intel_state
.base
;
932 i
.base_reg
= intel_state
.base
;
933 i
.index_reg
= intel_state
.index
;
936 if (i
.base_reg
|| i
.index_reg
)
937 i
.types
[this_operand
].bitfield
.baseindex
= 1;
939 expP
= &disp_expressions
[i
.disp_operands
];
940 memcpy (expP
, &exp
, sizeof(exp
));
941 resolve_expression (expP
);
943 if (expP
->X_op
!= O_constant
944 || expP
->X_add_number
945 || !i
.types
[this_operand
].bitfield
.baseindex
)
947 i
.op
[this_operand
].disps
= expP
;
950 i386_addressing_mode ();
952 if (flag_code
== CODE_64BIT
)
954 if (!i
.prefix
[ADDR_PREFIX
])
956 i
.types
[this_operand
].bitfield
.disp64
= 1;
957 i
.types
[this_operand
].bitfield
.disp32s
= 1;
960 i
.types
[this_operand
].bitfield
.disp32
= 1;
962 else if (!i
.prefix
[ADDR_PREFIX
] ^ (flag_code
== CODE_16BIT
))
963 i
.types
[this_operand
].bitfield
.disp32
= 1;
965 i
.types
[this_operand
].bitfield
.disp16
= 1;
967 #if defined (OBJ_AOUT) || defined (OBJ_MAYBE_AOUT)
969 * exp_seg is used only for verification in
970 * i386_finalize_displacement, and we can end up seeing reg_section
971 * here - but we know we removed all registers from the expression
972 * (or error-ed on any remaining ones) in i386_intel_simplify. I
973 * consider the check in i386_finalize_displacement bogus anyway, in
974 * particular because it doesn't allow for expr_section, so I'd
975 * rather see that check (and the similar one in
976 * i386_finalize_immediate) use SEG_NORMAL(), but not being an a.out
977 * expert I can't really say whether that would have other bad side
980 if (OUTPUT_FLAVOR
== bfd_target_aout_flavour
981 && exp_seg
== reg_section
)
982 exp_seg
= expP
->X_op
!= O_constant
? undefined_section
986 if (!i386_finalize_displacement (exp_seg
, expP
,
987 intel_state
.reloc_types
,
994 for (ret
= check_none
; ; ret
= operand_check
)
996 expP
= symbol_get_value_expression (intel_state
.seg
);
997 if (expP
->X_op
!= O_full_ptr
998 || symbol_get_value_expression (expP
->X_op_symbol
)->X_op
1001 intel_state
.seg
= expP
->X_add_symbol
;
1003 if (expP
->X_op
!= O_register
)
1005 as_bad (_("segment register name expected"));
1008 if (i386_regtab
[expP
->X_add_number
].reg_type
.bitfield
.class != SReg
)
1010 as_bad (_("invalid use of register"));
1016 as_bad (_("redundant segment overrides"));
1019 as_warn (_("redundant segment overrides"));
1022 switch (i386_regtab
[expP
->X_add_number
].reg_num
)
1024 case 0: i
.seg
[i
.mem_operands
] = &es
; break;
1025 case 1: i
.seg
[i
.mem_operands
] = &cs
; break;
1026 case 2: i
.seg
[i
.mem_operands
] = &ss
; break;
1027 case 3: i
.seg
[i
.mem_operands
] = &ds
; break;
1028 case 4: i
.seg
[i
.mem_operands
] = &fs
; break;
1029 case 5: i
.seg
[i
.mem_operands
] = &gs
; break;
1030 case RegFlat
: i
.seg
[i
.mem_operands
] = NULL
; break;
1034 if (!i386_index_check (operand_string
))
1037 i
.flags
[this_operand
] |= Operand_Mem
;
1038 if (i
.mem_operands
== 0)
1039 i
.memop1_string
= xstrdup (operand_string
);
1045 if (i
.imm_operands
>= MAX_IMMEDIATE_OPERANDS
)
1047 as_bad (_("at most %d immediate operands are allowed"),
1048 MAX_IMMEDIATE_OPERANDS
);
1052 expP
= &im_expressions
[i
.imm_operands
++];
1053 i
.op
[this_operand
].imms
= expP
;
1056 return i386_finalize_immediate (exp_seg
, expP
, intel_state
.reloc_types
,