1 /* tc-i386.c -- Assemble code for the Intel 80386
2 Copyright 1989, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
3 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007
4 Free Software Foundation, Inc.
6 This file is part of GAS, the GNU Assembler.
8 GAS is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 3, or (at your option)
13 GAS is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with GAS; see the file COPYING. If not, write to the Free
20 Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA
23 /* Intel 80386 machine specific gas.
24 Written by Eliot Dresselhaus (eliot@mgm.mit.edu).
25 x86_64 support by Jan Hubicka (jh@suse.cz)
26 VIA PadLock support by Michal Ludvig (mludvig@suse.cz)
27 Bugs & suggestions are completely welcome. This is free software.
28 Please help us make it better. */
31 #include "safe-ctype.h"
33 #include "dwarf2dbg.h"
34 #include "dw2gencfi.h"
35 #include "elf/x86-64.h"
36 #include "opcodes/i386-init.h"
38 #ifndef REGISTER_WARNINGS
39 #define REGISTER_WARNINGS 1
42 #ifndef INFER_ADDR_PREFIX
43 #define INFER_ADDR_PREFIX 1
47 #define DEFAULT_ARCH "i386"
52 #define INLINE __inline__
58 static void set_code_flag (int);
59 static void set_16bit_gcc_code_flag (int);
60 static void set_intel_syntax (int);
61 static void set_allow_index_reg (int);
62 static void set_cpu_arch (int);
64 static void pe_directive_secrel (int);
66 static void signed_cons (int);
67 static char *output_invalid (int c
);
68 static int i386_operand (char *);
69 static int i386_intel_operand (char *, int);
70 static const reg_entry
*parse_register (char *, char **);
71 static char *parse_insn (char *, char *);
72 static char *parse_operands (char *, const char *);
73 static void swap_operands (void);
74 static void swap_2_operands (int, int);
75 static void optimize_imm (void);
76 static void optimize_disp (void);
77 static int match_template (void);
78 static int check_string (void);
79 static int process_suffix (void);
80 static int check_byte_reg (void);
81 static int check_long_reg (void);
82 static int check_qword_reg (void);
83 static int check_word_reg (void);
84 static int finalize_imm (void);
85 static void process_drex (void);
86 static int process_operands (void);
87 static const seg_entry
*build_modrm_byte (void);
88 static void output_insn (void);
89 static void output_imm (fragS
*, offsetT
);
90 static void output_disp (fragS
*, offsetT
);
92 static void s_bss (int);
94 #if defined (OBJ_ELF) || defined (OBJ_MAYBE_ELF)
95 static void handle_large_common (int small ATTRIBUTE_UNUSED
);
98 static const char *default_arch
= DEFAULT_ARCH
;
100 /* 'md_assemble ()' gathers together information and puts it into a
107 const reg_entry
*regs
;
112 /* TM holds the template for the insn were currently assembling. */
115 /* SUFFIX holds the instruction mnemonic suffix if given.
116 (e.g. 'l' for 'movl') */
119 /* OPERANDS gives the number of given operands. */
120 unsigned int operands
;
122 /* REG_OPERANDS, DISP_OPERANDS, MEM_OPERANDS, IMM_OPERANDS give the number
123 of given register, displacement, memory operands and immediate
125 unsigned int reg_operands
, disp_operands
, mem_operands
, imm_operands
;
127 /* TYPES [i] is the type (see above #defines) which tells us how to
128 use OP[i] for the corresponding operand. */
129 i386_operand_type types
[MAX_OPERANDS
];
131 /* Displacement expression, immediate expression, or register for each
133 union i386_op op
[MAX_OPERANDS
];
135 /* Flags for operands. */
136 unsigned int flags
[MAX_OPERANDS
];
137 #define Operand_PCrel 1
139 /* Relocation type for operand */
140 enum bfd_reloc_code_real reloc
[MAX_OPERANDS
];
142 /* BASE_REG, INDEX_REG, and LOG2_SCALE_FACTOR are used to encode
143 the base index byte below. */
144 const reg_entry
*base_reg
;
145 const reg_entry
*index_reg
;
146 unsigned int log2_scale_factor
;
148 /* SEG gives the seg_entries of this insn. They are zero unless
149 explicit segment overrides are given. */
150 const seg_entry
*seg
[2];
152 /* PREFIX holds all the given prefix opcodes (usually null).
153 PREFIXES is the number of prefix opcodes. */
154 unsigned int prefixes
;
155 unsigned char prefix
[MAX_PREFIXES
];
157 /* RM and SIB are the modrm byte and the sib byte where the
158 addressing modes of this insn are encoded. DREX is the byte
159 added by the SSE5 instructions. */
167 typedef struct _i386_insn i386_insn
;
169 /* List of chars besides those in app.c:symbol_chars that can start an
170 operand. Used to prevent the scrubber eating vital white-space. */
171 const char extra_symbol_chars
[] = "*%-(["
180 #if (defined (TE_I386AIX) \
181 || ((defined (OBJ_ELF) || defined (OBJ_MAYBE_ELF)) \
182 && !defined (TE_GNU) \
183 && !defined (TE_LINUX) \
184 && !defined (TE_NETWARE) \
185 && !defined (TE_FreeBSD) \
186 && !defined (TE_NetBSD)))
187 /* This array holds the chars that always start a comment. If the
188 pre-processor is disabled, these aren't very useful. The option
189 --divide will remove '/' from this list. */
190 const char *i386_comment_chars
= "#/";
191 #define SVR4_COMMENT_CHARS 1
192 #define PREFIX_SEPARATOR '\\'
195 const char *i386_comment_chars
= "#";
196 #define PREFIX_SEPARATOR '/'
199 /* This array holds the chars that only start a comment at the beginning of
200 a line. If the line seems to have the form '# 123 filename'
201 .line and .file directives will appear in the pre-processed output.
202 Note that input_file.c hand checks for '#' at the beginning of the
203 first line of the input file. This is because the compiler outputs
204 #NO_APP at the beginning of its output.
205 Also note that comments started like this one will always work if
206 '/' isn't otherwise defined. */
207 const char line_comment_chars
[] = "#/";
209 const char line_separator_chars
[] = ";";
211 /* Chars that can be used to separate mant from exp in floating point
213 const char EXP_CHARS
[] = "eE";
215 /* Chars that mean this number is a floating point constant
218 const char FLT_CHARS
[] = "fFdDxX";
220 /* Tables for lexical analysis. */
221 static char mnemonic_chars
[256];
222 static char register_chars
[256];
223 static char operand_chars
[256];
224 static char identifier_chars
[256];
225 static char digit_chars
[256];
227 /* Lexical macros. */
228 #define is_mnemonic_char(x) (mnemonic_chars[(unsigned char) x])
229 #define is_operand_char(x) (operand_chars[(unsigned char) x])
230 #define is_register_char(x) (register_chars[(unsigned char) x])
231 #define is_space_char(x) ((x) == ' ')
232 #define is_identifier_char(x) (identifier_chars[(unsigned char) x])
233 #define is_digit_char(x) (digit_chars[(unsigned char) x])
235 /* All non-digit non-letter characters that may occur in an operand. */
236 static char operand_special_chars
[] = "%$-+(,)*._~/<>|&^!:[@]";
238 /* md_assemble() always leaves the strings it's passed unaltered. To
239 effect this we maintain a stack of saved characters that we've smashed
240 with '\0's (indicating end of strings for various sub-fields of the
241 assembler instruction). */
242 static char save_stack
[32];
243 static char *save_stack_p
;
244 #define END_STRING_AND_SAVE(s) \
245 do { *save_stack_p++ = *(s); *(s) = '\0'; } while (0)
246 #define RESTORE_END_STRING(s) \
247 do { *(s) = *--save_stack_p; } while (0)
249 /* The instruction we're assembling. */
252 /* Possible templates for current insn. */
253 static const templates
*current_templates
;
255 /* Per instruction expressionS buffers: max displacements & immediates. */
256 static expressionS disp_expressions
[MAX_MEMORY_OPERANDS
];
257 static expressionS im_expressions
[MAX_IMMEDIATE_OPERANDS
];
259 /* Current operand we are working on. */
260 static int this_operand
;
262 /* We support four different modes. FLAG_CODE variable is used to distinguish
269 #define NUM_FLAG_CODE ((int) CODE_64BIT + 1)
271 static enum flag_code flag_code
;
272 static unsigned int object_64bit
;
273 static int use_rela_relocations
= 0;
275 /* The names used to print error messages. */
276 static const char *flag_code_names
[] =
283 /* 1 for intel syntax,
285 static int intel_syntax
= 0;
287 /* 1 if register prefix % not required. */
288 static int allow_naked_reg
= 0;
290 /* 1 if fake index register, eiz/riz, is allowed . */
291 static int allow_index_reg
= 0;
293 /* Register prefix used for error message. */
294 static const char *register_prefix
= "%";
296 /* Used in 16 bit gcc mode to add an l suffix to call, ret, enter,
297 leave, push, and pop instructions so that gcc has the same stack
298 frame as in 32 bit mode. */
299 static char stackop_size
= '\0';
301 /* Non-zero to optimize code alignment. */
302 int optimize_align_code
= 1;
304 /* Non-zero to quieten some warnings. */
305 static int quiet_warnings
= 0;
308 static const char *cpu_arch_name
= NULL
;
309 static const char *cpu_sub_arch_name
= NULL
;
311 /* CPU feature flags. */
312 static i386_cpu_flags cpu_arch_flags
= CPU_UNKNOWN_FLAGS
;
314 /* Bitwise NOT of cpu_arch_flags. */
315 static i386_cpu_flags cpu_arch_flags_not
;
317 /* If we have selected a cpu we are generating instructions for. */
318 static int cpu_arch_tune_set
= 0;
320 /* Cpu we are generating instructions for. */
321 static enum processor_type cpu_arch_tune
= PROCESSOR_UNKNOWN
;
323 /* CPU feature flags of cpu we are generating instructions for. */
324 static i386_cpu_flags cpu_arch_tune_flags
;
326 /* CPU instruction set architecture used. */
327 static enum processor_type cpu_arch_isa
= PROCESSOR_UNKNOWN
;
329 /* CPU feature flags of instruction set architecture used. */
330 static i386_cpu_flags cpu_arch_isa_flags
;
332 /* If set, conditional jumps are not automatically promoted to handle
333 larger than a byte offset. */
334 static unsigned int no_cond_jump_promotion
= 0;
336 /* Pre-defined "_GLOBAL_OFFSET_TABLE_". */
337 static symbolS
*GOT_symbol
;
339 /* The dwarf2 return column, adjusted for 32 or 64 bit. */
340 unsigned int x86_dwarf2_return_column
;
342 /* The dwarf2 data alignment, adjusted for 32 or 64 bit. */
343 int x86_cie_data_alignment
;
345 /* Interface to relax_segment.
346 There are 3 major relax states for 386 jump insns because the
347 different types of jumps add different sizes to frags when we're
348 figuring out what sort of jump to choose to reach a given label. */
351 #define UNCOND_JUMP 0
353 #define COND_JUMP86 2
358 #define SMALL16 (SMALL | CODE16)
360 #define BIG16 (BIG | CODE16)
364 #define INLINE __inline__
370 #define ENCODE_RELAX_STATE(type, size) \
371 ((relax_substateT) (((type) << 2) | (size)))
372 #define TYPE_FROM_RELAX_STATE(s) \
374 #define DISP_SIZE_FROM_RELAX_STATE(s) \
375 ((((s) & 3) == BIG ? 4 : (((s) & 3) == BIG16 ? 2 : 1)))
377 /* This table is used by relax_frag to promote short jumps to long
378 ones where necessary. SMALL (short) jumps may be promoted to BIG
379 (32 bit long) ones, and SMALL16 jumps to BIG16 (16 bit long). We
380 don't allow a short jump in a 32 bit code segment to be promoted to
381 a 16 bit offset jump because it's slower (requires data size
382 prefix), and doesn't work, unless the destination is in the bottom
383 64k of the code segment (The top 16 bits of eip are zeroed). */
385 const relax_typeS md_relax_table
[] =
388 1) most positive reach of this state,
389 2) most negative reach of this state,
390 3) how many bytes this mode will have in the variable part of the frag
391 4) which index into the table to try if we can't fit into this one. */
393 /* UNCOND_JUMP states. */
394 {127 + 1, -128 + 1, 1, ENCODE_RELAX_STATE (UNCOND_JUMP
, BIG
)},
395 {127 + 1, -128 + 1, 1, ENCODE_RELAX_STATE (UNCOND_JUMP
, BIG16
)},
396 /* dword jmp adds 4 bytes to frag:
397 0 extra opcode bytes, 4 displacement bytes. */
399 /* word jmp adds 2 byte2 to frag:
400 0 extra opcode bytes, 2 displacement bytes. */
403 /* COND_JUMP states. */
404 {127 + 1, -128 + 1, 1, ENCODE_RELAX_STATE (COND_JUMP
, BIG
)},
405 {127 + 1, -128 + 1, 1, ENCODE_RELAX_STATE (COND_JUMP
, BIG16
)},
406 /* dword conditionals adds 5 bytes to frag:
407 1 extra opcode byte, 4 displacement bytes. */
409 /* word conditionals add 3 bytes to frag:
410 1 extra opcode byte, 2 displacement bytes. */
413 /* COND_JUMP86 states. */
414 {127 + 1, -128 + 1, 1, ENCODE_RELAX_STATE (COND_JUMP86
, BIG
)},
415 {127 + 1, -128 + 1, 1, ENCODE_RELAX_STATE (COND_JUMP86
, BIG16
)},
416 /* dword conditionals adds 5 bytes to frag:
417 1 extra opcode byte, 4 displacement bytes. */
419 /* word conditionals add 4 bytes to frag:
420 1 displacement byte and a 3 byte long branch insn. */
424 static const arch_entry cpu_arch
[] =
426 {"generic32", PROCESSOR_GENERIC32
,
427 CPU_GENERIC32_FLAGS
},
428 {"generic64", PROCESSOR_GENERIC64
,
429 CPU_GENERIC64_FLAGS
},
430 {"i8086", PROCESSOR_UNKNOWN
,
432 {"i186", PROCESSOR_UNKNOWN
,
434 {"i286", PROCESSOR_UNKNOWN
,
436 {"i386", PROCESSOR_I386
,
438 {"i486", PROCESSOR_I486
,
440 {"i586", PROCESSOR_PENTIUM
,
442 {"i686", PROCESSOR_PENTIUMPRO
,
444 {"pentium", PROCESSOR_PENTIUM
,
446 {"pentiumpro",PROCESSOR_PENTIUMPRO
,
448 {"pentiumii", PROCESSOR_PENTIUMPRO
,
450 {"pentiumiii",PROCESSOR_PENTIUMPRO
,
452 {"pentium4", PROCESSOR_PENTIUM4
,
454 {"prescott", PROCESSOR_NOCONA
,
456 {"nocona", PROCESSOR_NOCONA
,
458 {"yonah", PROCESSOR_CORE
,
460 {"core", PROCESSOR_CORE
,
462 {"merom", PROCESSOR_CORE2
,
464 {"core2", PROCESSOR_CORE2
,
468 {"k6_2", PROCESSOR_K6
,
470 {"athlon", PROCESSOR_ATHLON
,
472 {"sledgehammer", PROCESSOR_K8
,
474 {"opteron", PROCESSOR_K8
,
478 {"amdfam10", PROCESSOR_AMDFAM10
,
479 CPU_AMDFAM10_FLAGS
},
480 {".mmx", PROCESSOR_UNKNOWN
,
482 {".sse", PROCESSOR_UNKNOWN
,
484 {".sse2", PROCESSOR_UNKNOWN
,
486 {".sse3", PROCESSOR_UNKNOWN
,
488 {".ssse3", PROCESSOR_UNKNOWN
,
490 {".sse4.1", PROCESSOR_UNKNOWN
,
492 {".sse4.2", PROCESSOR_UNKNOWN
,
494 {".sse4", PROCESSOR_UNKNOWN
,
496 {".3dnow", PROCESSOR_UNKNOWN
,
498 {".3dnowa", PROCESSOR_UNKNOWN
,
500 {".padlock", PROCESSOR_UNKNOWN
,
502 {".pacifica", PROCESSOR_UNKNOWN
,
504 {".svme", PROCESSOR_UNKNOWN
,
506 {".sse4a", PROCESSOR_UNKNOWN
,
508 {".abm", PROCESSOR_UNKNOWN
,
510 {".sse5", PROCESSOR_UNKNOWN
,
514 const pseudo_typeS md_pseudo_table
[] =
516 #if !defined(OBJ_AOUT) && !defined(USE_ALIGN_PTWO)
517 {"align", s_align_bytes
, 0},
519 {"align", s_align_ptwo
, 0},
521 {"arch", set_cpu_arch
, 0},
525 {"ffloat", float_cons
, 'f'},
526 {"dfloat", float_cons
, 'd'},
527 {"tfloat", float_cons
, 'x'},
529 {"slong", signed_cons
, 4},
530 {"noopt", s_ignore
, 0},
531 {"optim", s_ignore
, 0},
532 {"code16gcc", set_16bit_gcc_code_flag
, CODE_16BIT
},
533 {"code16", set_code_flag
, CODE_16BIT
},
534 {"code32", set_code_flag
, CODE_32BIT
},
535 {"code64", set_code_flag
, CODE_64BIT
},
536 {"intel_syntax", set_intel_syntax
, 1},
537 {"att_syntax", set_intel_syntax
, 0},
538 {"allow_index_reg", set_allow_index_reg
, 1},
539 {"disallow_index_reg", set_allow_index_reg
, 0},
540 #if defined (OBJ_ELF) || defined (OBJ_MAYBE_ELF)
541 {"largecomm", handle_large_common
, 0},
543 {"file", (void (*) (int)) dwarf2_directive_file
, 0},
544 {"loc", dwarf2_directive_loc
, 0},
545 {"loc_mark_labels", dwarf2_directive_loc_mark_labels
, 0},
548 {"secrel32", pe_directive_secrel
, 0},
553 /* For interface with expression (). */
554 extern char *input_line_pointer
;
556 /* Hash table for instruction mnemonic lookup. */
557 static struct hash_control
*op_hash
;
559 /* Hash table for register lookup. */
560 static struct hash_control
*reg_hash
;
563 i386_align_code (fragS
*fragP
, int count
)
565 /* Various efficient no-op patterns for aligning code labels.
566 Note: Don't try to assemble the instructions in the comments.
567 0L and 0w are not legal. */
568 static const char f32_1
[] =
570 static const char f32_2
[] =
571 {0x66,0x90}; /* xchg %ax,%ax */
572 static const char f32_3
[] =
573 {0x8d,0x76,0x00}; /* leal 0(%esi),%esi */
574 static const char f32_4
[] =
575 {0x8d,0x74,0x26,0x00}; /* leal 0(%esi,1),%esi */
576 static const char f32_5
[] =
578 0x8d,0x74,0x26,0x00}; /* leal 0(%esi,1),%esi */
579 static const char f32_6
[] =
580 {0x8d,0xb6,0x00,0x00,0x00,0x00}; /* leal 0L(%esi),%esi */
581 static const char f32_7
[] =
582 {0x8d,0xb4,0x26,0x00,0x00,0x00,0x00}; /* leal 0L(%esi,1),%esi */
583 static const char f32_8
[] =
585 0x8d,0xb4,0x26,0x00,0x00,0x00,0x00}; /* leal 0L(%esi,1),%esi */
586 static const char f32_9
[] =
587 {0x89,0xf6, /* movl %esi,%esi */
588 0x8d,0xbc,0x27,0x00,0x00,0x00,0x00}; /* leal 0L(%edi,1),%edi */
589 static const char f32_10
[] =
590 {0x8d,0x76,0x00, /* leal 0(%esi),%esi */
591 0x8d,0xbc,0x27,0x00,0x00,0x00,0x00}; /* leal 0L(%edi,1),%edi */
592 static const char f32_11
[] =
593 {0x8d,0x74,0x26,0x00, /* leal 0(%esi,1),%esi */
594 0x8d,0xbc,0x27,0x00,0x00,0x00,0x00}; /* leal 0L(%edi,1),%edi */
595 static const char f32_12
[] =
596 {0x8d,0xb6,0x00,0x00,0x00,0x00, /* leal 0L(%esi),%esi */
597 0x8d,0xbf,0x00,0x00,0x00,0x00}; /* leal 0L(%edi),%edi */
598 static const char f32_13
[] =
599 {0x8d,0xb6,0x00,0x00,0x00,0x00, /* leal 0L(%esi),%esi */
600 0x8d,0xbc,0x27,0x00,0x00,0x00,0x00}; /* leal 0L(%edi,1),%edi */
601 static const char f32_14
[] =
602 {0x8d,0xb4,0x26,0x00,0x00,0x00,0x00, /* leal 0L(%esi,1),%esi */
603 0x8d,0xbc,0x27,0x00,0x00,0x00,0x00}; /* leal 0L(%edi,1),%edi */
604 static const char f16_3
[] =
605 {0x8d,0x74,0x00}; /* lea 0(%esi),%esi */
606 static const char f16_4
[] =
607 {0x8d,0xb4,0x00,0x00}; /* lea 0w(%si),%si */
608 static const char f16_5
[] =
610 0x8d,0xb4,0x00,0x00}; /* lea 0w(%si),%si */
611 static const char f16_6
[] =
612 {0x89,0xf6, /* mov %si,%si */
613 0x8d,0xbd,0x00,0x00}; /* lea 0w(%di),%di */
614 static const char f16_7
[] =
615 {0x8d,0x74,0x00, /* lea 0(%si),%si */
616 0x8d,0xbd,0x00,0x00}; /* lea 0w(%di),%di */
617 static const char f16_8
[] =
618 {0x8d,0xb4,0x00,0x00, /* lea 0w(%si),%si */
619 0x8d,0xbd,0x00,0x00}; /* lea 0w(%di),%di */
620 static const char jump_31
[] =
621 {0xeb,0x1d,0x90,0x90,0x90,0x90,0x90, /* jmp .+31; lotsa nops */
622 0x90,0x90,0x90,0x90,0x90,0x90,0x90,0x90,
623 0x90,0x90,0x90,0x90,0x90,0x90,0x90,0x90,
624 0x90,0x90,0x90,0x90,0x90,0x90,0x90,0x90};
625 static const char *const f32_patt
[] = {
626 f32_1
, f32_2
, f32_3
, f32_4
, f32_5
, f32_6
, f32_7
, f32_8
,
627 f32_9
, f32_10
, f32_11
, f32_12
, f32_13
, f32_14
629 static const char *const f16_patt
[] = {
630 f32_1
, f32_2
, f16_3
, f16_4
, f16_5
, f16_6
, f16_7
, f16_8
633 static const char alt_3
[] =
635 /* nopl 0(%[re]ax) */
636 static const char alt_4
[] =
637 {0x0f,0x1f,0x40,0x00};
638 /* nopl 0(%[re]ax,%[re]ax,1) */
639 static const char alt_5
[] =
640 {0x0f,0x1f,0x44,0x00,0x00};
641 /* nopw 0(%[re]ax,%[re]ax,1) */
642 static const char alt_6
[] =
643 {0x66,0x0f,0x1f,0x44,0x00,0x00};
644 /* nopl 0L(%[re]ax) */
645 static const char alt_7
[] =
646 {0x0f,0x1f,0x80,0x00,0x00,0x00,0x00};
647 /* nopl 0L(%[re]ax,%[re]ax,1) */
648 static const char alt_8
[] =
649 {0x0f,0x1f,0x84,0x00,0x00,0x00,0x00,0x00};
650 /* nopw 0L(%[re]ax,%[re]ax,1) */
651 static const char alt_9
[] =
652 {0x66,0x0f,0x1f,0x84,0x00,0x00,0x00,0x00,0x00};
653 /* nopw %cs:0L(%[re]ax,%[re]ax,1) */
654 static const char alt_10
[] =
655 {0x66,0x2e,0x0f,0x1f,0x84,0x00,0x00,0x00,0x00,0x00};
657 nopw %cs:0L(%[re]ax,%[re]ax,1) */
658 static const char alt_long_11
[] =
660 0x66,0x2e,0x0f,0x1f,0x84,0x00,0x00,0x00,0x00,0x00};
663 nopw %cs:0L(%[re]ax,%[re]ax,1) */
664 static const char alt_long_12
[] =
667 0x66,0x2e,0x0f,0x1f,0x84,0x00,0x00,0x00,0x00,0x00};
671 nopw %cs:0L(%[re]ax,%[re]ax,1) */
672 static const char alt_long_13
[] =
676 0x66,0x2e,0x0f,0x1f,0x84,0x00,0x00,0x00,0x00,0x00};
681 nopw %cs:0L(%[re]ax,%[re]ax,1) */
682 static const char alt_long_14
[] =
687 0x66,0x2e,0x0f,0x1f,0x84,0x00,0x00,0x00,0x00,0x00};
693 nopw %cs:0L(%[re]ax,%[re]ax,1) */
694 static const char alt_long_15
[] =
700 0x66,0x2e,0x0f,0x1f,0x84,0x00,0x00,0x00,0x00,0x00};
701 /* nopl 0(%[re]ax,%[re]ax,1)
702 nopw 0(%[re]ax,%[re]ax,1) */
703 static const char alt_short_11
[] =
704 {0x0f,0x1f,0x44,0x00,0x00,
705 0x66,0x0f,0x1f,0x44,0x00,0x00};
706 /* nopw 0(%[re]ax,%[re]ax,1)
707 nopw 0(%[re]ax,%[re]ax,1) */
708 static const char alt_short_12
[] =
709 {0x66,0x0f,0x1f,0x44,0x00,0x00,
710 0x66,0x0f,0x1f,0x44,0x00,0x00};
711 /* nopw 0(%[re]ax,%[re]ax,1)
713 static const char alt_short_13
[] =
714 {0x66,0x0f,0x1f,0x44,0x00,0x00,
715 0x0f,0x1f,0x80,0x00,0x00,0x00,0x00};
718 static const char alt_short_14
[] =
719 {0x0f,0x1f,0x80,0x00,0x00,0x00,0x00,
720 0x0f,0x1f,0x80,0x00,0x00,0x00,0x00};
722 nopl 0L(%[re]ax,%[re]ax,1) */
723 static const char alt_short_15
[] =
724 {0x0f,0x1f,0x80,0x00,0x00,0x00,0x00,
725 0x0f,0x1f,0x84,0x00,0x00,0x00,0x00,0x00};
726 static const char *const alt_short_patt
[] = {
727 f32_1
, f32_2
, alt_3
, alt_4
, alt_5
, alt_6
, alt_7
, alt_8
,
728 alt_9
, alt_10
, alt_short_11
, alt_short_12
, alt_short_13
,
729 alt_short_14
, alt_short_15
731 static const char *const alt_long_patt
[] = {
732 f32_1
, f32_2
, alt_3
, alt_4
, alt_5
, alt_6
, alt_7
, alt_8
,
733 alt_9
, alt_10
, alt_long_11
, alt_long_12
, alt_long_13
,
734 alt_long_14
, alt_long_15
737 /* Only align for at least a positive non-zero boundary. */
738 if (count
<= 0 || count
> MAX_MEM_FOR_RS_ALIGN_CODE
)
741 /* We need to decide which NOP sequence to use for 32bit and
742 64bit. When -mtune= is used:
744 1. For PROCESSOR_I386, PROCESSOR_I486, PROCESSOR_PENTIUM and
745 PROCESSOR_GENERIC32, f32_patt will be used.
746 2. For PROCESSOR_PENTIUMPRO, PROCESSOR_PENTIUM4, PROCESSOR_NOCONA,
747 PROCESSOR_CORE, PROCESSOR_CORE2, and PROCESSOR_GENERIC64,
748 alt_long_patt will be used.
749 3. For PROCESSOR_ATHLON, PROCESSOR_K6, PROCESSOR_K8 and
750 PROCESSOR_AMDFAM10, alt_short_patt will be used.
752 When -mtune= isn't used, alt_long_patt will be used if
753 cpu_arch_isa_flags has Cpu686. Otherwise, f32_patt will
756 When -march= or .arch is used, we can't use anything beyond
757 cpu_arch_isa_flags. */
759 if (flag_code
== CODE_16BIT
)
763 memcpy (fragP
->fr_literal
+ fragP
->fr_fix
,
765 /* Adjust jump offset. */
766 fragP
->fr_literal
[fragP
->fr_fix
+ 1] = count
- 2;
769 memcpy (fragP
->fr_literal
+ fragP
->fr_fix
,
770 f16_patt
[count
- 1], count
);
774 const char *const *patt
= NULL
;
776 if (cpu_arch_isa
== PROCESSOR_UNKNOWN
)
778 /* PROCESSOR_UNKNOWN means that all ISAs may be used. */
779 switch (cpu_arch_tune
)
781 case PROCESSOR_UNKNOWN
:
782 /* We use cpu_arch_isa_flags to check if we SHOULD
783 optimize for Cpu686. */
784 if (cpu_arch_isa_flags
.bitfield
.cpui686
)
785 patt
= alt_long_patt
;
789 case PROCESSOR_PENTIUMPRO
:
790 case PROCESSOR_PENTIUM4
:
791 case PROCESSOR_NOCONA
:
793 case PROCESSOR_CORE2
:
794 case PROCESSOR_GENERIC64
:
795 patt
= alt_long_patt
;
798 case PROCESSOR_ATHLON
:
800 case PROCESSOR_AMDFAM10
:
801 patt
= alt_short_patt
;
805 case PROCESSOR_PENTIUM
:
806 case PROCESSOR_GENERIC32
:
813 switch (cpu_arch_tune
)
815 case PROCESSOR_UNKNOWN
:
816 /* When cpu_arch_isa is net, cpu_arch_tune shouldn't be
817 PROCESSOR_UNKNOWN. */
823 case PROCESSOR_PENTIUM
:
825 case PROCESSOR_ATHLON
:
827 case PROCESSOR_AMDFAM10
:
828 case PROCESSOR_GENERIC32
:
829 /* We use cpu_arch_isa_flags to check if we CAN optimize
831 if (cpu_arch_isa_flags
.bitfield
.cpui686
)
832 patt
= alt_short_patt
;
836 case PROCESSOR_PENTIUMPRO
:
837 case PROCESSOR_PENTIUM4
:
838 case PROCESSOR_NOCONA
:
840 case PROCESSOR_CORE2
:
841 if (cpu_arch_isa_flags
.bitfield
.cpui686
)
842 patt
= alt_long_patt
;
846 case PROCESSOR_GENERIC64
:
847 patt
= alt_long_patt
;
852 if (patt
== f32_patt
)
854 /* If the padding is less than 15 bytes, we use the normal
855 ones. Otherwise, we use a jump instruction and adjust
858 memcpy (fragP
->fr_literal
+ fragP
->fr_fix
,
859 patt
[count
- 1], count
);
862 memcpy (fragP
->fr_literal
+ fragP
->fr_fix
,
864 /* Adjust jump offset. */
865 fragP
->fr_literal
[fragP
->fr_fix
+ 1] = count
- 2;
870 /* Maximum length of an instruction is 15 byte. If the
871 padding is greater than 15 bytes and we don't use jump,
872 we have to break it into smaller pieces. */
877 memcpy (fragP
->fr_literal
+ fragP
->fr_fix
+ padding
,
882 memcpy (fragP
->fr_literal
+ fragP
->fr_fix
,
883 patt
[padding
- 1], padding
);
886 fragP
->fr_var
= count
;
890 uints_all_zero (const unsigned int *x
, unsigned int size
)
908 uints_set (unsigned int *x
, unsigned int v
, unsigned int size
)
925 uints_equal (const unsigned int *x
, const unsigned int *y
,
937 return x
[0] == y
[0];
944 #define UINTS_ALL_ZERO(x) \
945 uints_all_zero ((x).array, ARRAY_SIZE ((x).array))
946 #define UINTS_SET(x, v) \
947 uints_set ((x).array, v, ARRAY_SIZE ((x).array))
948 #define UINTS_CLEAR(x) \
949 uints_set ((x).array, 0, ARRAY_SIZE ((x).array))
950 #define UINTS_EQUAL(x, y) \
951 uints_equal ((x).array, (y).array, ARRAY_SIZE ((x).array))
954 cpu_flags_check_cpu64 (i386_cpu_flags f
)
956 return !((flag_code
== CODE_64BIT
&& f
.bitfield
.cpuno64
)
957 || (flag_code
!= CODE_64BIT
&& f
.bitfield
.cpu64
));
960 static INLINE i386_cpu_flags
961 cpu_flags_not (i386_cpu_flags x
)
963 switch (ARRAY_SIZE (x
.array
))
966 x
.array
[2] = ~x
.array
[2];
968 x
.array
[1] = ~x
.array
[1];
970 x
.array
[0] = ~x
.array
[0];
977 x
.bitfield
.unused
= 0;
983 static INLINE i386_cpu_flags
984 cpu_flags_and (i386_cpu_flags x
, i386_cpu_flags y
)
986 switch (ARRAY_SIZE (x
.array
))
989 x
.array
[2] &= y
.array
[2];
991 x
.array
[1] &= y
.array
[1];
993 x
.array
[0] &= y
.array
[0];
1001 static INLINE i386_cpu_flags
1002 cpu_flags_or (i386_cpu_flags x
, i386_cpu_flags y
)
1004 switch (ARRAY_SIZE (x
.array
))
1007 x
.array
[2] |= y
.array
[2];
1009 x
.array
[1] |= y
.array
[1];
1011 x
.array
[0] |= y
.array
[0];
1020 cpu_flags_match (i386_cpu_flags x
)
1022 i386_cpu_flags
not = cpu_arch_flags_not
;
1024 not.bitfield
.cpu64
= 1;
1025 not.bitfield
.cpuno64
= 1;
1027 x
.bitfield
.cpu64
= 0;
1028 x
.bitfield
.cpuno64
= 0;
1030 not = cpu_flags_and (x
, not);
1031 return UINTS_ALL_ZERO (not);
1034 static INLINE i386_operand_type
1035 operand_type_and (i386_operand_type x
, i386_operand_type y
)
1037 switch (ARRAY_SIZE (x
.array
))
1040 x
.array
[2] &= y
.array
[2];
1042 x
.array
[1] &= y
.array
[1];
1044 x
.array
[0] &= y
.array
[0];
1052 static INLINE i386_operand_type
1053 operand_type_or (i386_operand_type x
, i386_operand_type y
)
1055 switch (ARRAY_SIZE (x
.array
))
1058 x
.array
[2] |= y
.array
[2];
1060 x
.array
[1] |= y
.array
[1];
1062 x
.array
[0] |= y
.array
[0];
1070 static INLINE i386_operand_type
1071 operand_type_xor (i386_operand_type x
, i386_operand_type y
)
1073 switch (ARRAY_SIZE (x
.array
))
1076 x
.array
[2] ^= y
.array
[2];
1078 x
.array
[1] ^= y
.array
[1];
1080 x
.array
[0] ^= y
.array
[0];
1088 static const i386_operand_type acc32
= OPERAND_TYPE_ACC32
;
1089 static const i386_operand_type acc64
= OPERAND_TYPE_ACC64
;
1090 static const i386_operand_type control
= OPERAND_TYPE_CONTROL
;
1091 static const i386_operand_type reg16_inoutportreg
1092 = OPERAND_TYPE_REG16_INOUTPORTREG
;
1093 static const i386_operand_type disp16
= OPERAND_TYPE_DISP16
;
1094 static const i386_operand_type disp32
= OPERAND_TYPE_DISP32
;
1095 static const i386_operand_type disp32s
= OPERAND_TYPE_DISP32S
;
1096 static const i386_operand_type disp16_32
= OPERAND_TYPE_DISP16_32
;
1097 static const i386_operand_type anydisp
1098 = OPERAND_TYPE_ANYDISP
;
1099 static const i386_operand_type regxmm
= OPERAND_TYPE_REGXMM
;
1100 static const i386_operand_type imm8
= OPERAND_TYPE_IMM8
;
1101 static const i386_operand_type imm8s
= OPERAND_TYPE_IMM8S
;
1102 static const i386_operand_type imm16
= OPERAND_TYPE_IMM16
;
1103 static const i386_operand_type imm32
= OPERAND_TYPE_IMM32
;
1104 static const i386_operand_type imm32s
= OPERAND_TYPE_IMM32S
;
1105 static const i386_operand_type imm64
= OPERAND_TYPE_IMM64
;
1106 static const i386_operand_type imm16_32
= OPERAND_TYPE_IMM16_32
;
1107 static const i386_operand_type imm16_32s
= OPERAND_TYPE_IMM16_32S
;
1108 static const i386_operand_type imm16_32_32s
= OPERAND_TYPE_IMM16_32_32S
;
1119 operand_type_check (i386_operand_type t
, enum operand_type c
)
1124 return (t
.bitfield
.reg8
1127 || t
.bitfield
.reg64
);
1130 return (t
.bitfield
.imm8
1134 || t
.bitfield
.imm32s
1135 || t
.bitfield
.imm64
);
1138 return (t
.bitfield
.disp8
1139 || t
.bitfield
.disp16
1140 || t
.bitfield
.disp32
1141 || t
.bitfield
.disp32s
1142 || t
.bitfield
.disp64
);
1145 return (t
.bitfield
.disp8
1146 || t
.bitfield
.disp16
1147 || t
.bitfield
.disp32
1148 || t
.bitfield
.disp32s
1149 || t
.bitfield
.disp64
1150 || t
.bitfield
.baseindex
);
1158 operand_type_match (i386_operand_type overlap
,
1159 i386_operand_type given
)
1161 i386_operand_type temp
= overlap
;
1163 temp
.bitfield
.jumpabsolute
= 0;
1164 if (UINTS_ALL_ZERO (temp
))
1167 return (given
.bitfield
.baseindex
== overlap
.bitfield
.baseindex
1168 && given
.bitfield
.jumpabsolute
== overlap
.bitfield
.jumpabsolute
);
1171 /* If given types r0 and r1 are registers they must be of the same type
1172 unless the expected operand type register overlap is null.
1173 Note that Acc in a template matches every size of reg. */
1176 operand_type_register_match (i386_operand_type m0
,
1177 i386_operand_type g0
,
1178 i386_operand_type t0
,
1179 i386_operand_type m1
,
1180 i386_operand_type g1
,
1181 i386_operand_type t1
)
1183 if (!operand_type_check (g0
, reg
))
1186 if (!operand_type_check (g1
, reg
))
1189 if (g0
.bitfield
.reg8
== g1
.bitfield
.reg8
1190 && g0
.bitfield
.reg16
== g1
.bitfield
.reg16
1191 && g0
.bitfield
.reg32
== g1
.bitfield
.reg32
1192 && g0
.bitfield
.reg64
== g1
.bitfield
.reg64
)
1195 if (m0
.bitfield
.acc
)
1197 t0
.bitfield
.reg8
= 1;
1198 t0
.bitfield
.reg16
= 1;
1199 t0
.bitfield
.reg32
= 1;
1200 t0
.bitfield
.reg64
= 1;
1203 if (m1
.bitfield
.acc
)
1205 t1
.bitfield
.reg8
= 1;
1206 t1
.bitfield
.reg16
= 1;
1207 t1
.bitfield
.reg32
= 1;
1208 t1
.bitfield
.reg64
= 1;
1211 return (!(t0
.bitfield
.reg8
& t1
.bitfield
.reg8
)
1212 && !(t0
.bitfield
.reg16
& t1
.bitfield
.reg16
)
1213 && !(t0
.bitfield
.reg32
& t1
.bitfield
.reg32
)
1214 && !(t0
.bitfield
.reg64
& t1
.bitfield
.reg64
));
1217 static INLINE
unsigned int
1218 mode_from_disp_size (i386_operand_type t
)
1220 if (t
.bitfield
.disp8
)
1222 else if (t
.bitfield
.disp16
1223 || t
.bitfield
.disp32
1224 || t
.bitfield
.disp32s
)
1231 fits_in_signed_byte (offsetT num
)
1233 return (num
>= -128) && (num
<= 127);
1237 fits_in_unsigned_byte (offsetT num
)
1239 return (num
& 0xff) == num
;
1243 fits_in_unsigned_word (offsetT num
)
1245 return (num
& 0xffff) == num
;
1249 fits_in_signed_word (offsetT num
)
1251 return (-32768 <= num
) && (num
<= 32767);
1255 fits_in_signed_long (offsetT num ATTRIBUTE_UNUSED
)
1260 return (!(((offsetT
) -1 << 31) & num
)
1261 || (((offsetT
) -1 << 31) & num
) == ((offsetT
) -1 << 31));
1263 } /* fits_in_signed_long() */
1266 fits_in_unsigned_long (offsetT num ATTRIBUTE_UNUSED
)
1271 return (num
& (((offsetT
) 2 << 31) - 1)) == num
;
1273 } /* fits_in_unsigned_long() */
1275 static i386_operand_type
1276 smallest_imm_type (offsetT num
)
1278 i386_operand_type t
;
1281 t
.bitfield
.imm64
= 1;
1283 if (cpu_arch_tune
!= PROCESSOR_I486
&& num
== 1)
1285 /* This code is disabled on the 486 because all the Imm1 forms
1286 in the opcode table are slower on the i486. They're the
1287 versions with the implicitly specified single-position
1288 displacement, which has another syntax if you really want to
1290 t
.bitfield
.imm1
= 1;
1291 t
.bitfield
.imm8
= 1;
1292 t
.bitfield
.imm8s
= 1;
1293 t
.bitfield
.imm16
= 1;
1294 t
.bitfield
.imm32
= 1;
1295 t
.bitfield
.imm32s
= 1;
1297 else if (fits_in_signed_byte (num
))
1299 t
.bitfield
.imm8
= 1;
1300 t
.bitfield
.imm8s
= 1;
1301 t
.bitfield
.imm16
= 1;
1302 t
.bitfield
.imm32
= 1;
1303 t
.bitfield
.imm32s
= 1;
1305 else if (fits_in_unsigned_byte (num
))
1307 t
.bitfield
.imm8
= 1;
1308 t
.bitfield
.imm16
= 1;
1309 t
.bitfield
.imm32
= 1;
1310 t
.bitfield
.imm32s
= 1;
1312 else if (fits_in_signed_word (num
) || fits_in_unsigned_word (num
))
1314 t
.bitfield
.imm16
= 1;
1315 t
.bitfield
.imm32
= 1;
1316 t
.bitfield
.imm32s
= 1;
1318 else if (fits_in_signed_long (num
))
1320 t
.bitfield
.imm32
= 1;
1321 t
.bitfield
.imm32s
= 1;
1323 else if (fits_in_unsigned_long (num
))
1324 t
.bitfield
.imm32
= 1;
1330 offset_in_range (offsetT val
, int size
)
1336 case 1: mask
= ((addressT
) 1 << 8) - 1; break;
1337 case 2: mask
= ((addressT
) 1 << 16) - 1; break;
1338 case 4: mask
= ((addressT
) 2 << 31) - 1; break;
1340 case 8: mask
= ((addressT
) 2 << 63) - 1; break;
1345 /* If BFD64, sign extend val. */
1346 if (!use_rela_relocations
)
1347 if ((val
& ~(((addressT
) 2 << 31) - 1)) == 0)
1348 val
= (val
^ ((addressT
) 1 << 31)) - ((addressT
) 1 << 31);
1350 if ((val
& ~mask
) != 0 && (val
& ~mask
) != ~mask
)
1352 char buf1
[40], buf2
[40];
1354 sprint_value (buf1
, val
);
1355 sprint_value (buf2
, val
& mask
);
1356 as_warn (_("%s shortened to %s"), buf1
, buf2
);
1361 /* Returns 0 if attempting to add a prefix where one from the same
1362 class already exists, 1 if non rep/repne added, 2 if rep/repne
1365 add_prefix (unsigned int prefix
)
1370 if (prefix
>= REX_OPCODE
&& prefix
< REX_OPCODE
+ 16
1371 && flag_code
== CODE_64BIT
)
1373 if ((i
.prefix
[REX_PREFIX
] & prefix
& REX_W
)
1374 || ((i
.prefix
[REX_PREFIX
] & (REX_R
| REX_X
| REX_B
))
1375 && (prefix
& (REX_R
| REX_X
| REX_B
))))
1386 case CS_PREFIX_OPCODE
:
1387 case DS_PREFIX_OPCODE
:
1388 case ES_PREFIX_OPCODE
:
1389 case FS_PREFIX_OPCODE
:
1390 case GS_PREFIX_OPCODE
:
1391 case SS_PREFIX_OPCODE
:
1395 case REPNE_PREFIX_OPCODE
:
1396 case REPE_PREFIX_OPCODE
:
1399 case LOCK_PREFIX_OPCODE
:
1407 case ADDR_PREFIX_OPCODE
:
1411 case DATA_PREFIX_OPCODE
:
1415 if (i
.prefix
[q
] != 0)
1423 i
.prefix
[q
] |= prefix
;
1426 as_bad (_("same type of prefix used twice"));
1432 set_code_flag (int value
)
1435 if (flag_code
== CODE_64BIT
)
1437 cpu_arch_flags
.bitfield
.cpu64
= 1;
1438 cpu_arch_flags
.bitfield
.cpuno64
= 0;
1439 cpu_arch_flags_not
.bitfield
.cpu64
= 0;
1440 cpu_arch_flags_not
.bitfield
.cpuno64
= 1;
1444 cpu_arch_flags
.bitfield
.cpu64
= 0;
1445 cpu_arch_flags
.bitfield
.cpuno64
= 1;
1446 cpu_arch_flags_not
.bitfield
.cpu64
= 1;
1447 cpu_arch_flags_not
.bitfield
.cpuno64
= 0;
1449 if (value
== CODE_64BIT
&& !cpu_arch_flags
.bitfield
.cpulm
)
1451 as_bad (_("64bit mode not supported on this CPU."));
1453 if (value
== CODE_32BIT
&& !cpu_arch_flags
.bitfield
.cpui386
)
1455 as_bad (_("32bit mode not supported on this CPU."));
1457 stackop_size
= '\0';
1461 set_16bit_gcc_code_flag (int new_code_flag
)
1463 flag_code
= new_code_flag
;
1464 if (flag_code
!= CODE_16BIT
)
1466 cpu_arch_flags
.bitfield
.cpu64
= 0;
1467 cpu_arch_flags
.bitfield
.cpuno64
= 1;
1468 cpu_arch_flags_not
.bitfield
.cpu64
= 1;
1469 cpu_arch_flags_not
.bitfield
.cpuno64
= 0;
1470 stackop_size
= LONG_MNEM_SUFFIX
;
1474 set_intel_syntax (int syntax_flag
)
1476 /* Find out if register prefixing is specified. */
1477 int ask_naked_reg
= 0;
1480 if (!is_end_of_line
[(unsigned char) *input_line_pointer
])
1482 char *string
= input_line_pointer
;
1483 int e
= get_symbol_end ();
1485 if (strcmp (string
, "prefix") == 0)
1487 else if (strcmp (string
, "noprefix") == 0)
1490 as_bad (_("bad argument to syntax directive."));
1491 *input_line_pointer
= e
;
1493 demand_empty_rest_of_line ();
1495 intel_syntax
= syntax_flag
;
1497 if (ask_naked_reg
== 0)
1498 allow_naked_reg
= (intel_syntax
1499 && (bfd_get_symbol_leading_char (stdoutput
) != '\0'));
1501 allow_naked_reg
= (ask_naked_reg
< 0);
1503 identifier_chars
['%'] = intel_syntax
&& allow_naked_reg
? '%' : 0;
1504 identifier_chars
['$'] = intel_syntax
? '$' : 0;
1505 register_prefix
= allow_naked_reg
? "" : "%";
1509 set_allow_index_reg (int flag
)
1511 allow_index_reg
= flag
;
1515 set_cpu_arch (int dummy ATTRIBUTE_UNUSED
)
1519 if (!is_end_of_line
[(unsigned char) *input_line_pointer
])
1521 char *string
= input_line_pointer
;
1522 int e
= get_symbol_end ();
1524 i386_cpu_flags flags
;
1526 for (i
= 0; i
< ARRAY_SIZE (cpu_arch
); i
++)
1528 if (strcmp (string
, cpu_arch
[i
].name
) == 0)
1532 cpu_arch_name
= cpu_arch
[i
].name
;
1533 cpu_sub_arch_name
= NULL
;
1534 cpu_arch_flags
= cpu_arch
[i
].flags
;
1535 if (flag_code
== CODE_64BIT
)
1537 cpu_arch_flags
.bitfield
.cpu64
= 1;
1538 cpu_arch_flags
.bitfield
.cpuno64
= 0;
1542 cpu_arch_flags
.bitfield
.cpu64
= 0;
1543 cpu_arch_flags
.bitfield
.cpuno64
= 1;
1545 cpu_arch_flags_not
= cpu_flags_not (cpu_arch_flags
);
1546 cpu_arch_isa
= cpu_arch
[i
].type
;
1547 cpu_arch_isa_flags
= cpu_arch
[i
].flags
;
1548 if (!cpu_arch_tune_set
)
1550 cpu_arch_tune
= cpu_arch_isa
;
1551 cpu_arch_tune_flags
= cpu_arch_isa_flags
;
1556 flags
= cpu_flags_or (cpu_arch_flags
,
1558 if (!UINTS_EQUAL (flags
, cpu_arch_flags
))
1560 cpu_sub_arch_name
= cpu_arch
[i
].name
;
1561 cpu_arch_flags
= flags
;
1562 cpu_arch_flags_not
= cpu_flags_not (cpu_arch_flags
);
1564 *input_line_pointer
= e
;
1565 demand_empty_rest_of_line ();
1569 if (i
>= ARRAY_SIZE (cpu_arch
))
1570 as_bad (_("no such architecture: `%s'"), string
);
1572 *input_line_pointer
= e
;
1575 as_bad (_("missing cpu architecture"));
1577 no_cond_jump_promotion
= 0;
1578 if (*input_line_pointer
== ','
1579 && !is_end_of_line
[(unsigned char) input_line_pointer
[1]])
1581 char *string
= ++input_line_pointer
;
1582 int e
= get_symbol_end ();
1584 if (strcmp (string
, "nojumps") == 0)
1585 no_cond_jump_promotion
= 1;
1586 else if (strcmp (string
, "jumps") == 0)
1589 as_bad (_("no such architecture modifier: `%s'"), string
);
1591 *input_line_pointer
= e
;
1594 demand_empty_rest_of_line ();
1600 if (!strcmp (default_arch
, "x86_64"))
1601 return bfd_mach_x86_64
;
1602 else if (!strcmp (default_arch
, "i386"))
1603 return bfd_mach_i386_i386
;
1605 as_fatal (_("Unknown architecture"));
1611 const char *hash_err
;
1613 cpu_arch_flags_not
= cpu_flags_not (cpu_arch_flags
);
1615 /* Initialize op_hash hash table. */
1616 op_hash
= hash_new ();
1619 const template *optab
;
1620 templates
*core_optab
;
1622 /* Setup for loop. */
1624 core_optab
= (templates
*) xmalloc (sizeof (templates
));
1625 core_optab
->start
= optab
;
1630 if (optab
->name
== NULL
1631 || strcmp (optab
->name
, (optab
- 1)->name
) != 0)
1633 /* different name --> ship out current template list;
1634 add to hash table; & begin anew. */
1635 core_optab
->end
= optab
;
1636 hash_err
= hash_insert (op_hash
,
1641 as_fatal (_("Internal Error: Can't hash %s: %s"),
1645 if (optab
->name
== NULL
)
1647 core_optab
= (templates
*) xmalloc (sizeof (templates
));
1648 core_optab
->start
= optab
;
1653 /* Initialize reg_hash hash table. */
1654 reg_hash
= hash_new ();
1656 const reg_entry
*regtab
;
1657 unsigned int regtab_size
= i386_regtab_size
;
1659 for (regtab
= i386_regtab
; regtab_size
--; regtab
++)
1661 hash_err
= hash_insert (reg_hash
, regtab
->reg_name
, (PTR
) regtab
);
1663 as_fatal (_("Internal Error: Can't hash %s: %s"),
1669 /* Fill in lexical tables: mnemonic_chars, operand_chars. */
1674 for (c
= 0; c
< 256; c
++)
1679 mnemonic_chars
[c
] = c
;
1680 register_chars
[c
] = c
;
1681 operand_chars
[c
] = c
;
1683 else if (ISLOWER (c
))
1685 mnemonic_chars
[c
] = c
;
1686 register_chars
[c
] = c
;
1687 operand_chars
[c
] = c
;
1689 else if (ISUPPER (c
))
1691 mnemonic_chars
[c
] = TOLOWER (c
);
1692 register_chars
[c
] = mnemonic_chars
[c
];
1693 operand_chars
[c
] = c
;
1696 if (ISALPHA (c
) || ISDIGIT (c
))
1697 identifier_chars
[c
] = c
;
1700 identifier_chars
[c
] = c
;
1701 operand_chars
[c
] = c
;
1706 identifier_chars
['@'] = '@';
1709 identifier_chars
['?'] = '?';
1710 operand_chars
['?'] = '?';
1712 digit_chars
['-'] = '-';
1713 mnemonic_chars
['-'] = '-';
1714 mnemonic_chars
['.'] = '.';
1715 identifier_chars
['_'] = '_';
1716 identifier_chars
['.'] = '.';
1718 for (p
= operand_special_chars
; *p
!= '\0'; p
++)
1719 operand_chars
[(unsigned char) *p
] = *p
;
1722 #if defined (OBJ_ELF) || defined (OBJ_MAYBE_ELF)
1725 record_alignment (text_section
, 2);
1726 record_alignment (data_section
, 2);
1727 record_alignment (bss_section
, 2);
1731 if (flag_code
== CODE_64BIT
)
1733 x86_dwarf2_return_column
= 16;
1734 x86_cie_data_alignment
= -8;
1738 x86_dwarf2_return_column
= 8;
1739 x86_cie_data_alignment
= -4;
1744 i386_print_statistics (FILE *file
)
1746 hash_print_statistics (file
, "i386 opcode", op_hash
);
1747 hash_print_statistics (file
, "i386 register", reg_hash
);
1752 /* Debugging routines for md_assemble. */
1753 static void pte (template *);
1754 static void pt (i386_operand_type
);
1755 static void pe (expressionS
*);
1756 static void ps (symbolS
*);
1759 pi (char *line
, i386_insn
*x
)
1763 fprintf (stdout
, "%s: template ", line
);
1765 fprintf (stdout
, " address: base %s index %s scale %x\n",
1766 x
->base_reg
? x
->base_reg
->reg_name
: "none",
1767 x
->index_reg
? x
->index_reg
->reg_name
: "none",
1768 x
->log2_scale_factor
);
1769 fprintf (stdout
, " modrm: mode %x reg %x reg/mem %x\n",
1770 x
->rm
.mode
, x
->rm
.reg
, x
->rm
.regmem
);
1771 fprintf (stdout
, " sib: base %x index %x scale %x\n",
1772 x
->sib
.base
, x
->sib
.index
, x
->sib
.scale
);
1773 fprintf (stdout
, " rex: 64bit %x extX %x extY %x extZ %x\n",
1774 (x
->rex
& REX_W
) != 0,
1775 (x
->rex
& REX_R
) != 0,
1776 (x
->rex
& REX_X
) != 0,
1777 (x
->rex
& REX_B
) != 0);
1778 fprintf (stdout
, " drex: reg %d rex 0x%x\n",
1779 x
->drex
.reg
, x
->drex
.rex
);
1780 for (i
= 0; i
< x
->operands
; i
++)
1782 fprintf (stdout
, " #%d: ", i
+ 1);
1784 fprintf (stdout
, "\n");
1785 if (x
->types
[i
].bitfield
.reg8
1786 || x
->types
[i
].bitfield
.reg16
1787 || x
->types
[i
].bitfield
.reg32
1788 || x
->types
[i
].bitfield
.reg64
1789 || x
->types
[i
].bitfield
.regmmx
1790 || x
->types
[i
].bitfield
.regxmm
1791 || x
->types
[i
].bitfield
.sreg2
1792 || x
->types
[i
].bitfield
.sreg3
1793 || x
->types
[i
].bitfield
.control
1794 || x
->types
[i
].bitfield
.debug
1795 || x
->types
[i
].bitfield
.test
)
1796 fprintf (stdout
, "%s\n", x
->op
[i
].regs
->reg_name
);
1797 if (operand_type_check (x
->types
[i
], imm
))
1799 if (operand_type_check (x
->types
[i
], disp
))
1800 pe (x
->op
[i
].disps
);
1808 fprintf (stdout
, " %d operands ", t
->operands
);
1809 fprintf (stdout
, "opcode %x ", t
->base_opcode
);
1810 if (t
->extension_opcode
!= None
)
1811 fprintf (stdout
, "ext %x ", t
->extension_opcode
);
1812 if (t
->opcode_modifier
.d
)
1813 fprintf (stdout
, "D");
1814 if (t
->opcode_modifier
.w
)
1815 fprintf (stdout
, "W");
1816 fprintf (stdout
, "\n");
1817 for (i
= 0; i
< t
->operands
; i
++)
1819 fprintf (stdout
, " #%d type ", i
+ 1);
1820 pt (t
->operand_types
[i
]);
1821 fprintf (stdout
, "\n");
1828 fprintf (stdout
, " operation %d\n", e
->X_op
);
1829 fprintf (stdout
, " add_number %ld (%lx)\n",
1830 (long) e
->X_add_number
, (long) e
->X_add_number
);
1831 if (e
->X_add_symbol
)
1833 fprintf (stdout
, " add_symbol ");
1834 ps (e
->X_add_symbol
);
1835 fprintf (stdout
, "\n");
1839 fprintf (stdout
, " op_symbol ");
1840 ps (e
->X_op_symbol
);
1841 fprintf (stdout
, "\n");
1848 fprintf (stdout
, "%s type %s%s",
1850 S_IS_EXTERNAL (s
) ? "EXTERNAL " : "",
1851 segment_name (S_GET_SEGMENT (s
)));
1854 static struct type_name
1856 i386_operand_type mask
;
1859 const type_names
[] =
1861 { OPERAND_TYPE_REG8
, "r8" },
1862 { OPERAND_TYPE_REG16
, "r16" },
1863 { OPERAND_TYPE_REG32
, "r32" },
1864 { OPERAND_TYPE_REG64
, "r64" },
1865 { OPERAND_TYPE_IMM8
, "i8" },
1866 { OPERAND_TYPE_IMM8
, "i8s" },
1867 { OPERAND_TYPE_IMM16
, "i16" },
1868 { OPERAND_TYPE_IMM32
, "i32" },
1869 { OPERAND_TYPE_IMM32S
, "i32s" },
1870 { OPERAND_TYPE_IMM64
, "i64" },
1871 { OPERAND_TYPE_IMM1
, "i1" },
1872 { OPERAND_TYPE_BASEINDEX
, "BaseIndex" },
1873 { OPERAND_TYPE_DISP8
, "d8" },
1874 { OPERAND_TYPE_DISP16
, "d16" },
1875 { OPERAND_TYPE_DISP32
, "d32" },
1876 { OPERAND_TYPE_DISP32S
, "d32s" },
1877 { OPERAND_TYPE_DISP64
, "d64" },
1878 { OPERAND_TYPE_INOUTPORTREG
, "InOutPortReg" },
1879 { OPERAND_TYPE_SHIFTCOUNT
, "ShiftCount" },
1880 { OPERAND_TYPE_CONTROL
, "control reg" },
1881 { OPERAND_TYPE_TEST
, "test reg" },
1882 { OPERAND_TYPE_DEBUG
, "debug reg" },
1883 { OPERAND_TYPE_FLOATREG
, "FReg" },
1884 { OPERAND_TYPE_FLOATACC
, "FAcc" },
1885 { OPERAND_TYPE_SREG2
, "SReg2" },
1886 { OPERAND_TYPE_SREG3
, "SReg3" },
1887 { OPERAND_TYPE_ACC
, "Acc" },
1888 { OPERAND_TYPE_JUMPABSOLUTE
, "Jump Absolute" },
1889 { OPERAND_TYPE_REGMMX
, "rMMX" },
1890 { OPERAND_TYPE_REGXMM
, "rXMM" },
1891 { OPERAND_TYPE_ESSEG
, "es" },
1895 pt (i386_operand_type t
)
1898 i386_operand_type a
;
1900 for (j
= 0; j
< ARRAY_SIZE (type_names
); j
++)
1902 a
= operand_type_and (t
, type_names
[j
].mask
);
1903 if (!UINTS_ALL_ZERO (a
))
1904 fprintf (stdout
, "%s, ", type_names
[j
].name
);
1909 #endif /* DEBUG386 */
1911 static bfd_reloc_code_real_type
1912 reloc (unsigned int size
,
1915 bfd_reloc_code_real_type other
)
1917 if (other
!= NO_RELOC
)
1919 reloc_howto_type
*reloc
;
1924 case BFD_RELOC_X86_64_GOT32
:
1925 return BFD_RELOC_X86_64_GOT64
;
1927 case BFD_RELOC_X86_64_PLTOFF64
:
1928 return BFD_RELOC_X86_64_PLTOFF64
;
1930 case BFD_RELOC_X86_64_GOTPC32
:
1931 other
= BFD_RELOC_X86_64_GOTPC64
;
1933 case BFD_RELOC_X86_64_GOTPCREL
:
1934 other
= BFD_RELOC_X86_64_GOTPCREL64
;
1936 case BFD_RELOC_X86_64_TPOFF32
:
1937 other
= BFD_RELOC_X86_64_TPOFF64
;
1939 case BFD_RELOC_X86_64_DTPOFF32
:
1940 other
= BFD_RELOC_X86_64_DTPOFF64
;
1946 /* Sign-checking 4-byte relocations in 16-/32-bit code is pointless. */
1947 if (size
== 4 && flag_code
!= CODE_64BIT
)
1950 reloc
= bfd_reloc_type_lookup (stdoutput
, other
);
1952 as_bad (_("unknown relocation (%u)"), other
);
1953 else if (size
!= bfd_get_reloc_size (reloc
))
1954 as_bad (_("%u-byte relocation cannot be applied to %u-byte field"),
1955 bfd_get_reloc_size (reloc
),
1957 else if (pcrel
&& !reloc
->pc_relative
)
1958 as_bad (_("non-pc-relative relocation for pc-relative field"));
1959 else if ((reloc
->complain_on_overflow
== complain_overflow_signed
1961 || (reloc
->complain_on_overflow
== complain_overflow_unsigned
1963 as_bad (_("relocated field and relocation type differ in signedness"));
1972 as_bad (_("there are no unsigned pc-relative relocations"));
1975 case 1: return BFD_RELOC_8_PCREL
;
1976 case 2: return BFD_RELOC_16_PCREL
;
1977 case 4: return BFD_RELOC_32_PCREL
;
1978 case 8: return BFD_RELOC_64_PCREL
;
1980 as_bad (_("cannot do %u byte pc-relative relocation"), size
);
1987 case 4: return BFD_RELOC_X86_64_32S
;
1992 case 1: return BFD_RELOC_8
;
1993 case 2: return BFD_RELOC_16
;
1994 case 4: return BFD_RELOC_32
;
1995 case 8: return BFD_RELOC_64
;
1997 as_bad (_("cannot do %s %u byte relocation"),
1998 sign
> 0 ? "signed" : "unsigned", size
);
2002 return BFD_RELOC_NONE
;
2005 /* Here we decide which fixups can be adjusted to make them relative to
2006 the beginning of the section instead of the symbol. Basically we need
2007 to make sure that the dynamic relocations are done correctly, so in
2008 some cases we force the original symbol to be used. */
2011 tc_i386_fix_adjustable (fixS
*fixP ATTRIBUTE_UNUSED
)
2013 #if defined (OBJ_ELF) || defined (OBJ_MAYBE_ELF)
2017 /* Don't adjust pc-relative references to merge sections in 64-bit
2019 if (use_rela_relocations
2020 && (S_GET_SEGMENT (fixP
->fx_addsy
)->flags
& SEC_MERGE
) != 0
2024 /* The x86_64 GOTPCREL are represented as 32bit PCrel relocations
2025 and changed later by validate_fix. */
2026 if (GOT_symbol
&& fixP
->fx_subsy
== GOT_symbol
2027 && fixP
->fx_r_type
== BFD_RELOC_32_PCREL
)
2030 /* adjust_reloc_syms doesn't know about the GOT. */
2031 if (fixP
->fx_r_type
== BFD_RELOC_386_GOTOFF
2032 || fixP
->fx_r_type
== BFD_RELOC_386_PLT32
2033 || fixP
->fx_r_type
== BFD_RELOC_386_GOT32
2034 || fixP
->fx_r_type
== BFD_RELOC_386_TLS_GD
2035 || fixP
->fx_r_type
== BFD_RELOC_386_TLS_LDM
2036 || fixP
->fx_r_type
== BFD_RELOC_386_TLS_LDO_32
2037 || fixP
->fx_r_type
== BFD_RELOC_386_TLS_IE_32
2038 || fixP
->fx_r_type
== BFD_RELOC_386_TLS_IE
2039 || fixP
->fx_r_type
== BFD_RELOC_386_TLS_GOTIE
2040 || fixP
->fx_r_type
== BFD_RELOC_386_TLS_LE_32
2041 || fixP
->fx_r_type
== BFD_RELOC_386_TLS_LE
2042 || fixP
->fx_r_type
== BFD_RELOC_386_TLS_GOTDESC
2043 || fixP
->fx_r_type
== BFD_RELOC_386_TLS_DESC_CALL
2044 || fixP
->fx_r_type
== BFD_RELOC_X86_64_PLT32
2045 || fixP
->fx_r_type
== BFD_RELOC_X86_64_GOT32
2046 || fixP
->fx_r_type
== BFD_RELOC_X86_64_GOTPCREL
2047 || fixP
->fx_r_type
== BFD_RELOC_X86_64_TLSGD
2048 || fixP
->fx_r_type
== BFD_RELOC_X86_64_TLSLD
2049 || fixP
->fx_r_type
== BFD_RELOC_X86_64_DTPOFF32
2050 || fixP
->fx_r_type
== BFD_RELOC_X86_64_DTPOFF64
2051 || fixP
->fx_r_type
== BFD_RELOC_X86_64_GOTTPOFF
2052 || fixP
->fx_r_type
== BFD_RELOC_X86_64_TPOFF32
2053 || fixP
->fx_r_type
== BFD_RELOC_X86_64_TPOFF64
2054 || fixP
->fx_r_type
== BFD_RELOC_X86_64_GOTOFF64
2055 || fixP
->fx_r_type
== BFD_RELOC_X86_64_GOTPC32_TLSDESC
2056 || fixP
->fx_r_type
== BFD_RELOC_X86_64_TLSDESC_CALL
2057 || fixP
->fx_r_type
== BFD_RELOC_VTABLE_INHERIT
2058 || fixP
->fx_r_type
== BFD_RELOC_VTABLE_ENTRY
)
2065 intel_float_operand (const char *mnemonic
)
2067 /* Note that the value returned is meaningful only for opcodes with (memory)
2068 operands, hence the code here is free to improperly handle opcodes that
2069 have no operands (for better performance and smaller code). */
2071 if (mnemonic
[0] != 'f')
2072 return 0; /* non-math */
2074 switch (mnemonic
[1])
2076 /* fclex, fdecstp, fdisi, femms, feni, fincstp, finit, fsetpm, and
2077 the fs segment override prefix not currently handled because no
2078 call path can make opcodes without operands get here */
2080 return 2 /* integer op */;
2082 if (mnemonic
[2] == 'd' && (mnemonic
[3] == 'c' || mnemonic
[3] == 'e'))
2083 return 3; /* fldcw/fldenv */
2086 if (mnemonic
[2] != 'o' /* fnop */)
2087 return 3; /* non-waiting control op */
2090 if (mnemonic
[2] == 's')
2091 return 3; /* frstor/frstpm */
2094 if (mnemonic
[2] == 'a')
2095 return 3; /* fsave */
2096 if (mnemonic
[2] == 't')
2098 switch (mnemonic
[3])
2100 case 'c': /* fstcw */
2101 case 'd': /* fstdw */
2102 case 'e': /* fstenv */
2103 case 's': /* fsts[gw] */
2109 if (mnemonic
[2] == 'r' || mnemonic
[2] == 's')
2110 return 0; /* fxsave/fxrstor are not really math ops */
2117 /* This is the guts of the machine-dependent assembler. LINE points to a
2118 machine dependent instruction. This function is supposed to emit
2119 the frags/bytes it assembles to. */
2126 char mnemonic
[MAX_MNEM_SIZE
];
2128 /* Initialize globals. */
2129 memset (&i
, '\0', sizeof (i
));
2130 for (j
= 0; j
< MAX_OPERANDS
; j
++)
2131 i
.reloc
[j
] = NO_RELOC
;
2132 memset (disp_expressions
, '\0', sizeof (disp_expressions
));
2133 memset (im_expressions
, '\0', sizeof (im_expressions
));
2134 save_stack_p
= save_stack
;
2136 /* First parse an instruction mnemonic & call i386_operand for the operands.
2137 We assume that the scrubber has arranged it so that line[0] is the valid
2138 start of a (possibly prefixed) mnemonic. */
2140 line
= parse_insn (line
, mnemonic
);
2144 line
= parse_operands (line
, mnemonic
);
2148 /* Now we've parsed the mnemonic into a set of templates, and have the
2149 operands at hand. */
2151 /* All intel opcodes have reversed operands except for "bound" and
2152 "enter". We also don't reverse intersegment "jmp" and "call"
2153 instructions with 2 immediate operands so that the immediate segment
2154 precedes the offset, as it does when in AT&T mode. */
2157 && (strcmp (mnemonic
, "bound") != 0)
2158 && (strcmp (mnemonic
, "invlpga") != 0)
2159 && !(operand_type_check (i
.types
[0], imm
)
2160 && operand_type_check (i
.types
[1], imm
)))
2163 /* The order of the immediates should be reversed
2164 for 2 immediates extrq and insertq instructions */
2165 if (i
.imm_operands
== 2
2166 && (strcmp (mnemonic
, "extrq") == 0
2167 || strcmp (mnemonic
, "insertq") == 0))
2168 swap_2_operands (0, 1);
2173 /* Don't optimize displacement for movabs since it only takes 64bit
2176 && (flag_code
!= CODE_64BIT
2177 || strcmp (mnemonic
, "movabs") != 0))
2180 /* Next, we find a template that matches the given insn,
2181 making sure the overlap of the given operands types is consistent
2182 with the template operand types. */
2184 if (!match_template ())
2189 /* Undo SYSV386_COMPAT brokenness when in Intel mode. See i386.h */
2191 && (i
.tm
.base_opcode
& 0xfffffde0) == 0xdce0)
2192 i
.tm
.base_opcode
^= Opcode_FloatR
;
2194 /* Zap movzx and movsx suffix. The suffix may have been set from
2195 "word ptr" or "byte ptr" on the source operand, but we'll use
2196 the suffix later to choose the destination register. */
2197 if ((i
.tm
.base_opcode
& ~9) == 0x0fb6)
2199 if (i
.reg_operands
< 2
2201 && (!i
.tm
.opcode_modifier
.no_bsuf
2202 || !i
.tm
.opcode_modifier
.no_wsuf
2203 || !i
.tm
.opcode_modifier
.no_lsuf
2204 || !i
.tm
.opcode_modifier
.no_ssuf
2205 || !i
.tm
.opcode_modifier
.no_xsuf
2206 || !i
.tm
.opcode_modifier
.no_qsuf
))
2207 as_bad (_("ambiguous operand size for `%s'"), i
.tm
.name
);
2213 if (i
.tm
.opcode_modifier
.fwait
)
2214 if (!add_prefix (FWAIT_OPCODE
))
2217 /* Check string instruction segment overrides. */
2218 if (i
.tm
.opcode_modifier
.isstring
&& i
.mem_operands
!= 0)
2220 if (!check_string ())
2224 if (!process_suffix ())
2227 /* Make still unresolved immediate matches conform to size of immediate
2228 given in i.suffix. */
2229 if (!finalize_imm ())
2232 if (i
.types
[0].bitfield
.imm1
)
2233 i
.imm_operands
= 0; /* kludge for shift insns. */
2235 for (j
= 0; j
< 3; j
++)
2236 if (i
.types
[j
].bitfield
.inoutportreg
2237 || i
.types
[j
].bitfield
.shiftcount
2238 || i
.types
[j
].bitfield
.acc
2239 || i
.types
[j
].bitfield
.floatacc
)
2242 if (i
.tm
.opcode_modifier
.immext
)
2246 if (i
.tm
.cpu_flags
.bitfield
.cpusse3
&& i
.operands
> 0)
2248 /* Streaming SIMD extensions 3 Instructions have the fixed
2249 operands with an opcode suffix which is coded in the same
2250 place as an 8-bit immediate field would be. Here we check
2251 those operands and remove them afterwards. */
2254 for (x
= 0; x
< i
.operands
; x
++)
2255 if (i
.op
[x
].regs
->reg_num
!= x
)
2256 as_bad (_("can't use register '%s%s' as operand %d in '%s'."),
2258 i
.op
[x
].regs
->reg_name
,
2264 /* These AMD 3DNow! and Intel Katmai New Instructions have an
2265 opcode suffix which is coded in the same place as an 8-bit
2266 immediate field would be. Here we fake an 8-bit immediate
2267 operand from the opcode suffix stored in tm.extension_opcode.
2268 SSE5 also uses this encoding, for some of its 3 argument
2271 assert (i
.imm_operands
== 0
2273 || (i
.tm
.cpu_flags
.bitfield
.cpusse5
2274 && i
.operands
<= 3)));
2276 exp
= &im_expressions
[i
.imm_operands
++];
2277 i
.op
[i
.operands
].imms
= exp
;
2278 UINTS_CLEAR (i
.types
[i
.operands
]);
2279 i
.types
[i
.operands
].bitfield
.imm8
= 1;
2281 exp
->X_op
= O_constant
;
2282 exp
->X_add_number
= i
.tm
.extension_opcode
;
2283 i
.tm
.extension_opcode
= None
;
2286 /* For insns with operands there are more diddles to do to the opcode. */
2289 if (!process_operands ())
2292 else if (!quiet_warnings
&& i
.tm
.opcode_modifier
.ugh
)
2294 /* UnixWare fsub no args is alias for fsubp, fadd -> faddp, etc. */
2295 as_warn (_("translating to `%sp'"), i
.tm
.name
);
2298 /* Handle conversion of 'int $3' --> special int3 insn. */
2299 if (i
.tm
.base_opcode
== INT_OPCODE
&& i
.op
[0].imms
->X_add_number
== 3)
2301 i
.tm
.base_opcode
= INT3_OPCODE
;
2305 if ((i
.tm
.opcode_modifier
.jump
2306 || i
.tm
.opcode_modifier
.jumpbyte
2307 || i
.tm
.opcode_modifier
.jumpdword
)
2308 && i
.op
[0].disps
->X_op
== O_constant
)
2310 /* Convert "jmp constant" (and "call constant") to a jump (call) to
2311 the absolute address given by the constant. Since ix86 jumps and
2312 calls are pc relative, we need to generate a reloc. */
2313 i
.op
[0].disps
->X_add_symbol
= &abs_symbol
;
2314 i
.op
[0].disps
->X_op
= O_symbol
;
2317 if (i
.tm
.opcode_modifier
.rex64
)
2320 /* For 8 bit registers we need an empty rex prefix. Also if the
2321 instruction already has a prefix, we need to convert old
2322 registers to new ones. */
2324 if ((i
.types
[0].bitfield
.reg8
2325 && (i
.op
[0].regs
->reg_flags
& RegRex64
) != 0)
2326 || (i
.types
[1].bitfield
.reg8
2327 && (i
.op
[1].regs
->reg_flags
& RegRex64
) != 0)
2328 || ((i
.types
[0].bitfield
.reg8
2329 || i
.types
[1].bitfield
.reg8
)
2334 i
.rex
|= REX_OPCODE
;
2335 for (x
= 0; x
< 2; x
++)
2337 /* Look for 8 bit operand that uses old registers. */
2338 if (i
.types
[x
].bitfield
.reg8
2339 && (i
.op
[x
].regs
->reg_flags
& RegRex64
) == 0)
2341 /* In case it is "hi" register, give up. */
2342 if (i
.op
[x
].regs
->reg_num
> 3)
2343 as_bad (_("can't encode register '%s%s' in an "
2344 "instruction requiring REX prefix."),
2345 register_prefix
, i
.op
[x
].regs
->reg_name
);
2347 /* Otherwise it is equivalent to the extended register.
2348 Since the encoding doesn't change this is merely
2349 cosmetic cleanup for debug output. */
2351 i
.op
[x
].regs
= i
.op
[x
].regs
+ 8;
2356 /* If the instruction has the DREX attribute (aka SSE5), don't emit a
2358 if (i
.tm
.opcode_modifier
.drex
|| i
.tm
.opcode_modifier
.drexc
)
2363 else if (i
.rex
!= 0)
2364 add_prefix (REX_OPCODE
| i
.rex
);
2366 /* We are ready to output the insn. */
2371 parse_insn (char *line
, char *mnemonic
)
2374 char *token_start
= l
;
2379 /* Non-zero if we found a prefix only acceptable with string insns. */
2380 const char *expecting_string_instruction
= NULL
;
2385 while ((*mnem_p
= mnemonic_chars
[(unsigned char) *l
]) != 0)
2388 if (mnem_p
>= mnemonic
+ MAX_MNEM_SIZE
)
2390 as_bad (_("no such instruction: `%s'"), token_start
);
2395 if (!is_space_char (*l
)
2396 && *l
!= END_OF_INSN
2398 || (*l
!= PREFIX_SEPARATOR
2401 as_bad (_("invalid character %s in mnemonic"),
2402 output_invalid (*l
));
2405 if (token_start
== l
)
2407 if (!intel_syntax
&& *l
== PREFIX_SEPARATOR
)
2408 as_bad (_("expecting prefix; got nothing"));
2410 as_bad (_("expecting mnemonic; got nothing"));
2414 /* Look up instruction (or prefix) via hash table. */
2415 current_templates
= hash_find (op_hash
, mnemonic
);
2417 if (*l
!= END_OF_INSN
2418 && (!is_space_char (*l
) || l
[1] != END_OF_INSN
)
2419 && current_templates
2420 && current_templates
->start
->opcode_modifier
.isprefix
)
2422 if (!cpu_flags_check_cpu64 (current_templates
->start
->cpu_flags
))
2424 as_bad ((flag_code
!= CODE_64BIT
2425 ? _("`%s' is only supported in 64-bit mode")
2426 : _("`%s' is not supported in 64-bit mode")),
2427 current_templates
->start
->name
);
2430 /* If we are in 16-bit mode, do not allow addr16 or data16.
2431 Similarly, in 32-bit mode, do not allow addr32 or data32. */
2432 if ((current_templates
->start
->opcode_modifier
.size16
2433 || current_templates
->start
->opcode_modifier
.size32
)
2434 && flag_code
!= CODE_64BIT
2435 && (current_templates
->start
->opcode_modifier
.size32
2436 ^ (flag_code
== CODE_16BIT
)))
2438 as_bad (_("redundant %s prefix"),
2439 current_templates
->start
->name
);
2442 /* Add prefix, checking for repeated prefixes. */
2443 switch (add_prefix (current_templates
->start
->base_opcode
))
2448 expecting_string_instruction
= current_templates
->start
->name
;
2451 /* Skip past PREFIX_SEPARATOR and reset token_start. */
2458 if (!current_templates
)
2460 /* See if we can get a match by trimming off a suffix. */
2463 case WORD_MNEM_SUFFIX
:
2464 if (intel_syntax
&& (intel_float_operand (mnemonic
) & 2))
2465 i
.suffix
= SHORT_MNEM_SUFFIX
;
2467 case BYTE_MNEM_SUFFIX
:
2468 case QWORD_MNEM_SUFFIX
:
2469 i
.suffix
= mnem_p
[-1];
2471 current_templates
= hash_find (op_hash
, mnemonic
);
2473 case SHORT_MNEM_SUFFIX
:
2474 case LONG_MNEM_SUFFIX
:
2477 i
.suffix
= mnem_p
[-1];
2479 current_templates
= hash_find (op_hash
, mnemonic
);
2487 if (intel_float_operand (mnemonic
) == 1)
2488 i
.suffix
= SHORT_MNEM_SUFFIX
;
2490 i
.suffix
= LONG_MNEM_SUFFIX
;
2492 current_templates
= hash_find (op_hash
, mnemonic
);
2496 if (!current_templates
)
2498 as_bad (_("no such instruction: `%s'"), token_start
);
2503 if (current_templates
->start
->opcode_modifier
.jump
2504 || current_templates
->start
->opcode_modifier
.jumpbyte
)
2506 /* Check for a branch hint. We allow ",pt" and ",pn" for
2507 predict taken and predict not taken respectively.
2508 I'm not sure that branch hints actually do anything on loop
2509 and jcxz insns (JumpByte) for current Pentium4 chips. They
2510 may work in the future and it doesn't hurt to accept them
2512 if (l
[0] == ',' && l
[1] == 'p')
2516 if (!add_prefix (DS_PREFIX_OPCODE
))
2520 else if (l
[2] == 'n')
2522 if (!add_prefix (CS_PREFIX_OPCODE
))
2528 /* Any other comma loses. */
2531 as_bad (_("invalid character %s in mnemonic"),
2532 output_invalid (*l
));
2536 /* Check if instruction is supported on specified architecture. */
2538 for (t
= current_templates
->start
; t
< current_templates
->end
; ++t
)
2540 if (cpu_flags_match (t
->cpu_flags
))
2542 if (cpu_flags_check_cpu64 (t
->cpu_flags
))
2545 if (!(supported
& 2))
2547 as_bad (flag_code
== CODE_64BIT
2548 ? _("`%s' is not supported in 64-bit mode")
2549 : _("`%s' is only supported in 64-bit mode"),
2550 current_templates
->start
->name
);
2553 if (!(supported
& 1))
2555 as_warn (_("`%s' is not supported on `%s%s'"),
2556 current_templates
->start
->name
,
2558 cpu_sub_arch_name
? cpu_sub_arch_name
: "");
2560 else if (!cpu_arch_flags
.bitfield
.cpui386
2561 && (flag_code
!= CODE_16BIT
))
2563 as_warn (_("use .code16 to ensure correct addressing mode"));
2566 /* Check for rep/repne without a string instruction. */
2567 if (expecting_string_instruction
)
2569 static templates override
;
2571 for (t
= current_templates
->start
; t
< current_templates
->end
; ++t
)
2572 if (t
->opcode_modifier
.isstring
)
2574 if (t
>= current_templates
->end
)
2576 as_bad (_("expecting string instruction after `%s'"),
2577 expecting_string_instruction
);
2580 for (override
.start
= t
; t
< current_templates
->end
; ++t
)
2581 if (!t
->opcode_modifier
.isstring
)
2584 current_templates
= &override
;
2591 parse_operands (char *l
, const char *mnemonic
)
2595 /* 1 if operand is pending after ','. */
2596 unsigned int expecting_operand
= 0;
2598 /* Non-zero if operand parens not balanced. */
2599 unsigned int paren_not_balanced
;
2601 while (*l
!= END_OF_INSN
)
2603 /* Skip optional white space before operand. */
2604 if (is_space_char (*l
))
2606 if (!is_operand_char (*l
) && *l
!= END_OF_INSN
)
2608 as_bad (_("invalid character %s before operand %d"),
2609 output_invalid (*l
),
2613 token_start
= l
; /* after white space */
2614 paren_not_balanced
= 0;
2615 while (paren_not_balanced
|| *l
!= ',')
2617 if (*l
== END_OF_INSN
)
2619 if (paren_not_balanced
)
2622 as_bad (_("unbalanced parenthesis in operand %d."),
2625 as_bad (_("unbalanced brackets in operand %d."),
2630 break; /* we are done */
2632 else if (!is_operand_char (*l
) && !is_space_char (*l
))
2634 as_bad (_("invalid character %s in operand %d"),
2635 output_invalid (*l
),
2642 ++paren_not_balanced
;
2644 --paren_not_balanced
;
2649 ++paren_not_balanced
;
2651 --paren_not_balanced
;
2655 if (l
!= token_start
)
2656 { /* Yes, we've read in another operand. */
2657 unsigned int operand_ok
;
2658 this_operand
= i
.operands
++;
2659 if (i
.operands
> MAX_OPERANDS
)
2661 as_bad (_("spurious operands; (%d operands/instruction max)"),
2665 /* Now parse operand adding info to 'i' as we go along. */
2666 END_STRING_AND_SAVE (l
);
2670 i386_intel_operand (token_start
,
2671 intel_float_operand (mnemonic
));
2673 operand_ok
= i386_operand (token_start
);
2675 RESTORE_END_STRING (l
);
2681 if (expecting_operand
)
2683 expecting_operand_after_comma
:
2684 as_bad (_("expecting operand after ','; got nothing"));
2689 as_bad (_("expecting operand before ','; got nothing"));
2694 /* Now *l must be either ',' or END_OF_INSN. */
2697 if (*++l
== END_OF_INSN
)
2699 /* Just skip it, if it's \n complain. */
2700 goto expecting_operand_after_comma
;
2702 expecting_operand
= 1;
2709 swap_2_operands (int xchg1
, int xchg2
)
2711 union i386_op temp_op
;
2712 i386_operand_type temp_type
;
2713 enum bfd_reloc_code_real temp_reloc
;
2715 temp_type
= i
.types
[xchg2
];
2716 i
.types
[xchg2
] = i
.types
[xchg1
];
2717 i
.types
[xchg1
] = temp_type
;
2718 temp_op
= i
.op
[xchg2
];
2719 i
.op
[xchg2
] = i
.op
[xchg1
];
2720 i
.op
[xchg1
] = temp_op
;
2721 temp_reloc
= i
.reloc
[xchg2
];
2722 i
.reloc
[xchg2
] = i
.reloc
[xchg1
];
2723 i
.reloc
[xchg1
] = temp_reloc
;
2727 swap_operands (void)
2732 swap_2_operands (1, i
.operands
- 2);
2735 swap_2_operands (0, i
.operands
- 1);
2741 if (i
.mem_operands
== 2)
2743 const seg_entry
*temp_seg
;
2744 temp_seg
= i
.seg
[0];
2745 i
.seg
[0] = i
.seg
[1];
2746 i
.seg
[1] = temp_seg
;
2750 /* Try to ensure constant immediates are represented in the smallest
2755 char guess_suffix
= 0;
2759 guess_suffix
= i
.suffix
;
2760 else if (i
.reg_operands
)
2762 /* Figure out a suffix from the last register operand specified.
2763 We can't do this properly yet, ie. excluding InOutPortReg,
2764 but the following works for instructions with immediates.
2765 In any case, we can't set i.suffix yet. */
2766 for (op
= i
.operands
; --op
>= 0;)
2767 if (i
.types
[op
].bitfield
.reg8
)
2769 guess_suffix
= BYTE_MNEM_SUFFIX
;
2772 else if (i
.types
[op
].bitfield
.reg16
)
2774 guess_suffix
= WORD_MNEM_SUFFIX
;
2777 else if (i
.types
[op
].bitfield
.reg32
)
2779 guess_suffix
= LONG_MNEM_SUFFIX
;
2782 else if (i
.types
[op
].bitfield
.reg64
)
2784 guess_suffix
= QWORD_MNEM_SUFFIX
;
2788 else if ((flag_code
== CODE_16BIT
) ^ (i
.prefix
[DATA_PREFIX
] != 0))
2789 guess_suffix
= WORD_MNEM_SUFFIX
;
2791 for (op
= i
.operands
; --op
>= 0;)
2792 if (operand_type_check (i
.types
[op
], imm
))
2794 switch (i
.op
[op
].imms
->X_op
)
2797 /* If a suffix is given, this operand may be shortened. */
2798 switch (guess_suffix
)
2800 case LONG_MNEM_SUFFIX
:
2801 i
.types
[op
].bitfield
.imm32
= 1;
2802 i
.types
[op
].bitfield
.imm64
= 1;
2804 case WORD_MNEM_SUFFIX
:
2805 i
.types
[op
].bitfield
.imm16
= 1;
2806 i
.types
[op
].bitfield
.imm32
= 1;
2807 i
.types
[op
].bitfield
.imm32s
= 1;
2808 i
.types
[op
].bitfield
.imm64
= 1;
2810 case BYTE_MNEM_SUFFIX
:
2811 i
.types
[op
].bitfield
.imm8
= 1;
2812 i
.types
[op
].bitfield
.imm8s
= 1;
2813 i
.types
[op
].bitfield
.imm16
= 1;
2814 i
.types
[op
].bitfield
.imm32
= 1;
2815 i
.types
[op
].bitfield
.imm32s
= 1;
2816 i
.types
[op
].bitfield
.imm64
= 1;
2820 /* If this operand is at most 16 bits, convert it
2821 to a signed 16 bit number before trying to see
2822 whether it will fit in an even smaller size.
2823 This allows a 16-bit operand such as $0xffe0 to
2824 be recognised as within Imm8S range. */
2825 if ((i
.types
[op
].bitfield
.imm16
)
2826 && (i
.op
[op
].imms
->X_add_number
& ~(offsetT
) 0xffff) == 0)
2828 i
.op
[op
].imms
->X_add_number
=
2829 (((i
.op
[op
].imms
->X_add_number
& 0xffff) ^ 0x8000) - 0x8000);
2831 if ((i
.types
[op
].bitfield
.imm32
)
2832 && ((i
.op
[op
].imms
->X_add_number
& ~(((offsetT
) 2 << 31) - 1))
2835 i
.op
[op
].imms
->X_add_number
= ((i
.op
[op
].imms
->X_add_number
2836 ^ ((offsetT
) 1 << 31))
2837 - ((offsetT
) 1 << 31));
2840 = operand_type_or (i
.types
[op
],
2841 smallest_imm_type (i
.op
[op
].imms
->X_add_number
));
2843 /* We must avoid matching of Imm32 templates when 64bit
2844 only immediate is available. */
2845 if (guess_suffix
== QWORD_MNEM_SUFFIX
)
2846 i
.types
[op
].bitfield
.imm32
= 0;
2853 /* Symbols and expressions. */
2855 /* Convert symbolic operand to proper sizes for matching, but don't
2856 prevent matching a set of insns that only supports sizes other
2857 than those matching the insn suffix. */
2859 i386_operand_type mask
, allowed
;
2863 UINTS_CLEAR (allowed
);
2865 for (t
= current_templates
->start
;
2866 t
< current_templates
->end
;
2868 allowed
= operand_type_or (allowed
,
2869 t
->operand_types
[op
]);
2870 switch (guess_suffix
)
2872 case QWORD_MNEM_SUFFIX
:
2873 mask
.bitfield
.imm64
= 1;
2874 mask
.bitfield
.imm32s
= 1;
2876 case LONG_MNEM_SUFFIX
:
2877 mask
.bitfield
.imm32
= 1;
2879 case WORD_MNEM_SUFFIX
:
2880 mask
.bitfield
.imm16
= 1;
2882 case BYTE_MNEM_SUFFIX
:
2883 mask
.bitfield
.imm8
= 1;
2888 allowed
= operand_type_and (mask
, allowed
);
2889 if (!UINTS_ALL_ZERO (allowed
))
2890 i
.types
[op
] = operand_type_and (i
.types
[op
], mask
);
2897 /* Try to use the smallest displacement type too. */
2899 optimize_disp (void)
2903 for (op
= i
.operands
; --op
>= 0;)
2904 if (operand_type_check (i
.types
[op
], disp
))
2906 if (i
.op
[op
].disps
->X_op
== O_constant
)
2908 offsetT disp
= i
.op
[op
].disps
->X_add_number
;
2910 if (i
.types
[op
].bitfield
.disp16
2911 && (disp
& ~(offsetT
) 0xffff) == 0)
2913 /* If this operand is at most 16 bits, convert
2914 to a signed 16 bit number and don't use 64bit
2916 disp
= (((disp
& 0xffff) ^ 0x8000) - 0x8000);
2917 i
.types
[op
].bitfield
.disp64
= 0;
2919 if (i
.types
[op
].bitfield
.disp32
2920 && (disp
& ~(((offsetT
) 2 << 31) - 1)) == 0)
2922 /* If this operand is at most 32 bits, convert
2923 to a signed 32 bit number and don't use 64bit
2925 disp
&= (((offsetT
) 2 << 31) - 1);
2926 disp
= (disp
^ ((offsetT
) 1 << 31)) - ((addressT
) 1 << 31);
2927 i
.types
[op
].bitfield
.disp64
= 0;
2929 if (!disp
&& i
.types
[op
].bitfield
.baseindex
)
2931 i
.types
[op
].bitfield
.disp8
= 0;
2932 i
.types
[op
].bitfield
.disp16
= 0;
2933 i
.types
[op
].bitfield
.disp32
= 0;
2934 i
.types
[op
].bitfield
.disp32s
= 0;
2935 i
.types
[op
].bitfield
.disp64
= 0;
2939 else if (flag_code
== CODE_64BIT
)
2941 if (fits_in_signed_long (disp
))
2943 i
.types
[op
].bitfield
.disp64
= 0;
2944 i
.types
[op
].bitfield
.disp32s
= 1;
2946 if (fits_in_unsigned_long (disp
))
2947 i
.types
[op
].bitfield
.disp32
= 1;
2949 if ((i
.types
[op
].bitfield
.disp32
2950 || i
.types
[op
].bitfield
.disp32s
2951 || i
.types
[op
].bitfield
.disp16
)
2952 && fits_in_signed_byte (disp
))
2953 i
.types
[op
].bitfield
.disp8
= 1;
2955 else if (i
.reloc
[op
] == BFD_RELOC_386_TLS_DESC_CALL
2956 || i
.reloc
[op
] == BFD_RELOC_X86_64_TLSDESC_CALL
)
2958 fix_new_exp (frag_now
, frag_more (0) - frag_now
->fr_literal
, 0,
2959 i
.op
[op
].disps
, 0, i
.reloc
[op
]);
2960 i
.types
[op
].bitfield
.disp8
= 0;
2961 i
.types
[op
].bitfield
.disp16
= 0;
2962 i
.types
[op
].bitfield
.disp32
= 0;
2963 i
.types
[op
].bitfield
.disp32s
= 0;
2964 i
.types
[op
].bitfield
.disp64
= 0;
2967 /* We only support 64bit displacement on constants. */
2968 i
.types
[op
].bitfield
.disp64
= 0;
2973 match_template (void)
2975 /* Points to template once we've found it. */
2977 i386_operand_type overlap0
, overlap1
, overlap2
, overlap3
;
2978 unsigned int found_reverse_match
;
2979 i386_opcode_modifier suffix_check
;
2980 i386_operand_type operand_types
[MAX_OPERANDS
];
2981 int addr_prefix_disp
;
2983 i386_cpu_flags overlap
;
2985 #if MAX_OPERANDS != 4
2986 # error "MAX_OPERANDS must be 4."
2989 found_reverse_match
= 0;
2990 addr_prefix_disp
= -1;
2992 memset (&suffix_check
, 0, sizeof (suffix_check
));
2993 if (i
.suffix
== BYTE_MNEM_SUFFIX
)
2994 suffix_check
.no_bsuf
= 1;
2995 else if (i
.suffix
== WORD_MNEM_SUFFIX
)
2996 suffix_check
.no_wsuf
= 1;
2997 else if (i
.suffix
== SHORT_MNEM_SUFFIX
)
2998 suffix_check
.no_ssuf
= 1;
2999 else if (i
.suffix
== LONG_MNEM_SUFFIX
)
3000 suffix_check
.no_lsuf
= 1;
3001 else if (i
.suffix
== QWORD_MNEM_SUFFIX
)
3002 suffix_check
.no_qsuf
= 1;
3003 else if (i
.suffix
== LONG_DOUBLE_MNEM_SUFFIX
)
3004 suffix_check
.no_xsuf
= 1;
3006 for (t
= current_templates
->start
; t
< current_templates
->end
; t
++)
3008 addr_prefix_disp
= -1;
3010 /* Must have right number of operands. */
3011 if (i
.operands
!= t
->operands
)
3014 /* Check the suffix, except for some instructions in intel mode. */
3015 if (((t
->opcode_modifier
.no_bsuf
& suffix_check
.no_bsuf
)
3016 || (t
->opcode_modifier
.no_wsuf
& suffix_check
.no_wsuf
)
3017 || (t
->opcode_modifier
.no_lsuf
& suffix_check
.no_lsuf
)
3018 || (t
->opcode_modifier
.no_ssuf
& suffix_check
.no_ssuf
)
3019 || (t
->opcode_modifier
.no_qsuf
& suffix_check
.no_qsuf
)
3020 || (t
->opcode_modifier
.no_xsuf
& suffix_check
.no_xsuf
))
3021 && !(intel_syntax
&& t
->opcode_modifier
.ignoresize
))
3024 for (j
= 0; j
< MAX_OPERANDS
; j
++)
3025 operand_types
[j
] = t
->operand_types
[j
];
3027 /* In general, don't allow 64-bit operands in 32-bit mode. */
3028 if (i
.suffix
== QWORD_MNEM_SUFFIX
3029 && flag_code
!= CODE_64BIT
3031 ? (!t
->opcode_modifier
.ignoresize
3032 && !intel_float_operand (t
->name
))
3033 : intel_float_operand (t
->name
) != 2)
3034 && ((!operand_types
[0].bitfield
.regmmx
3035 && !operand_types
[0].bitfield
.regxmm
)
3036 || (!operand_types
[t
->operands
> 1].bitfield
.regmmx
3037 && !!operand_types
[t
->operands
> 1].bitfield
.regxmm
))
3038 && (t
->base_opcode
!= 0x0fc7
3039 || t
->extension_opcode
!= 1 /* cmpxchg8b */))
3042 /* Do not verify operands when there are none. */
3045 overlap
= cpu_flags_and (t
->cpu_flags
, cpu_arch_flags_not
);
3048 if (!UINTS_ALL_ZERO (overlap
))
3050 /* We've found a match; break out of loop. */
3055 /* Address size prefix will turn Disp64/Disp32/Disp16 operand
3056 into Disp32/Disp16/Disp32 operand. */
3057 if (i
.prefix
[ADDR_PREFIX
] != 0)
3059 /* There should be only one Disp operand. */
3063 for (j
= 0; j
< MAX_OPERANDS
; j
++)
3065 if (operand_types
[j
].bitfield
.disp16
)
3067 addr_prefix_disp
= j
;
3068 operand_types
[j
].bitfield
.disp32
= 1;
3069 operand_types
[j
].bitfield
.disp16
= 0;
3075 for (j
= 0; j
< MAX_OPERANDS
; j
++)
3077 if (operand_types
[j
].bitfield
.disp32
)
3079 addr_prefix_disp
= j
;
3080 operand_types
[j
].bitfield
.disp32
= 0;
3081 operand_types
[j
].bitfield
.disp16
= 1;
3087 for (j
= 0; j
< MAX_OPERANDS
; j
++)
3089 if (operand_types
[j
].bitfield
.disp64
)
3091 addr_prefix_disp
= j
;
3092 operand_types
[j
].bitfield
.disp64
= 0;
3093 operand_types
[j
].bitfield
.disp32
= 1;
3101 overlap0
= operand_type_and (i
.types
[0], operand_types
[0]);
3102 switch (t
->operands
)
3105 if (!operand_type_match (overlap0
, i
.types
[0]))
3109 /* xchg %eax, %eax is a special case. It is an aliase for nop
3110 only in 32bit mode and we can use opcode 0x90. In 64bit
3111 mode, we can't use 0x90 for xchg %eax, %eax since it should
3112 zero-extend %eax to %rax. */
3113 if (flag_code
== CODE_64BIT
3114 && t
->base_opcode
== 0x90
3115 && UINTS_EQUAL (i
.types
[0], acc32
)
3116 && UINTS_EQUAL (i
.types
[1], acc32
))
3120 overlap1
= operand_type_and (i
.types
[1], operand_types
[1]);
3121 if (!operand_type_match (overlap0
, i
.types
[0])
3122 || !operand_type_match (overlap1
, i
.types
[1])
3123 /* monitor in SSE3 is a very special case. The first
3124 register and the second register may have different
3125 sizes. The same applies to crc32 in SSE4.2. It is
3126 also true for invlpga, vmload, vmrun and vmsave in
3128 || !((t
->base_opcode
== 0x0f01
3129 && (t
->extension_opcode
== 0xc8
3130 || t
->extension_opcode
== 0xd8
3131 || t
->extension_opcode
== 0xda
3132 || t
->extension_opcode
== 0xdb
3133 || t
->extension_opcode
== 0xdf))
3134 || t
->base_opcode
== 0xf20f38f1
3135 || operand_type_register_match (overlap0
, i
.types
[0],
3137 overlap1
, i
.types
[1],
3140 /* Check if other direction is valid ... */
3141 if (!t
->opcode_modifier
.d
&& !t
->opcode_modifier
.floatd
)
3144 /* Try reversing direction of operands. */
3145 overlap0
= operand_type_and (i
.types
[0], operand_types
[1]);
3146 overlap1
= operand_type_and (i
.types
[1], operand_types
[0]);
3147 if (!operand_type_match (overlap0
, i
.types
[0])
3148 || !operand_type_match (overlap1
, i
.types
[1])
3149 || !operand_type_register_match (overlap0
, i
.types
[0],
3151 overlap1
, i
.types
[1],
3154 /* Does not match either direction. */
3157 /* found_reverse_match holds which of D or FloatDR
3159 if (t
->opcode_modifier
.d
)
3160 found_reverse_match
= Opcode_D
;
3161 else if (t
->opcode_modifier
.floatd
)
3162 found_reverse_match
= Opcode_FloatD
;
3164 found_reverse_match
= 0;
3165 if (t
->opcode_modifier
.floatr
)
3166 found_reverse_match
|= Opcode_FloatR
;
3170 /* Found a forward 2 operand match here. */
3171 switch (t
->operands
)
3174 overlap3
= operand_type_and (i
.types
[3],
3177 overlap2
= operand_type_and (i
.types
[2],
3182 switch (t
->operands
)
3185 if (!operand_type_match (overlap3
, i
.types
[3])
3186 || !operand_type_register_match (overlap2
,
3194 /* Here we make use of the fact that there are no
3195 reverse match 3 operand instructions, and all 3
3196 operand instructions only need to be checked for
3197 register consistency between operands 2 and 3. */
3198 if (!operand_type_match (overlap2
, i
.types
[2])
3199 || !operand_type_register_match (overlap1
,
3209 /* Found either forward/reverse 2, 3 or 4 operand match here:
3210 slip through to break. */
3212 if (!UINTS_ALL_ZERO (overlap
))
3214 found_reverse_match
= 0;
3217 /* We've found a match; break out of loop. */
3221 if (t
== current_templates
->end
)
3223 /* We found no match. */
3224 as_bad (_("suffix or operands invalid for `%s'"),
3225 current_templates
->start
->name
);
3229 if (!quiet_warnings
)
3232 && (i
.types
[0].bitfield
.jumpabsolute
3233 != operand_types
[0].bitfield
.jumpabsolute
))
3235 as_warn (_("indirect %s without `*'"), t
->name
);
3238 if (t
->opcode_modifier
.isprefix
3239 && t
->opcode_modifier
.ignoresize
)
3241 /* Warn them that a data or address size prefix doesn't
3242 affect assembly of the next line of code. */
3243 as_warn (_("stand-alone `%s' prefix"), t
->name
);
3247 /* Copy the template we found. */
3250 if (addr_prefix_disp
!= -1)
3251 i
.tm
.operand_types
[addr_prefix_disp
]
3252 = operand_types
[addr_prefix_disp
];
3254 if (found_reverse_match
)
3256 /* If we found a reverse match we must alter the opcode
3257 direction bit. found_reverse_match holds bits to change
3258 (different for int & float insns). */
3260 i
.tm
.base_opcode
^= found_reverse_match
;
3262 i
.tm
.operand_types
[0] = operand_types
[1];
3263 i
.tm
.operand_types
[1] = operand_types
[0];
3272 int mem_op
= operand_type_check (i
.types
[0], anymem
) ? 0 : 1;
3273 if (i
.tm
.operand_types
[mem_op
].bitfield
.esseg
)
3275 if (i
.seg
[0] != NULL
&& i
.seg
[0] != &es
)
3277 as_bad (_("`%s' operand %d must use `%%es' segment"),
3282 /* There's only ever one segment override allowed per instruction.
3283 This instruction possibly has a legal segment override on the
3284 second operand, so copy the segment to where non-string
3285 instructions store it, allowing common code. */
3286 i
.seg
[0] = i
.seg
[1];
3288 else if (i
.tm
.operand_types
[mem_op
+ 1].bitfield
.esseg
)
3290 if (i
.seg
[1] != NULL
&& i
.seg
[1] != &es
)
3292 as_bad (_("`%s' operand %d must use `%%es' segment"),
3302 process_suffix (void)
3304 /* If matched instruction specifies an explicit instruction mnemonic
3306 if (i
.tm
.opcode_modifier
.size16
)
3307 i
.suffix
= WORD_MNEM_SUFFIX
;
3308 else if (i
.tm
.opcode_modifier
.size32
)
3309 i
.suffix
= LONG_MNEM_SUFFIX
;
3310 else if (i
.tm
.opcode_modifier
.size64
)
3311 i
.suffix
= QWORD_MNEM_SUFFIX
;
3312 else if (i
.reg_operands
)
3314 /* If there's no instruction mnemonic suffix we try to invent one
3315 based on register operands. */
3318 /* We take i.suffix from the last register operand specified,
3319 Destination register type is more significant than source
3320 register type. crc32 in SSE4.2 prefers source register
3322 if (i
.tm
.base_opcode
== 0xf20f38f1)
3324 if (i
.types
[0].bitfield
.reg16
)
3325 i
.suffix
= WORD_MNEM_SUFFIX
;
3326 else if (i
.types
[0].bitfield
.reg32
)
3327 i
.suffix
= LONG_MNEM_SUFFIX
;
3328 else if (i
.types
[0].bitfield
.reg64
)
3329 i
.suffix
= QWORD_MNEM_SUFFIX
;
3331 else if (i
.tm
.base_opcode
== 0xf20f38f0)
3333 if (i
.types
[0].bitfield
.reg8
)
3334 i
.suffix
= BYTE_MNEM_SUFFIX
;
3341 if (i
.tm
.base_opcode
== 0xf20f38f1
3342 || i
.tm
.base_opcode
== 0xf20f38f0)
3344 /* We have to know the operand size for crc32. */
3345 as_bad (_("ambiguous memory operand size for `%s`"),
3350 for (op
= i
.operands
; --op
>= 0;)
3351 if (!i
.tm
.operand_types
[op
].bitfield
.inoutportreg
)
3353 if (i
.types
[op
].bitfield
.reg8
)
3355 i
.suffix
= BYTE_MNEM_SUFFIX
;
3358 else if (i
.types
[op
].bitfield
.reg16
)
3360 i
.suffix
= WORD_MNEM_SUFFIX
;
3363 else if (i
.types
[op
].bitfield
.reg32
)
3365 i
.suffix
= LONG_MNEM_SUFFIX
;
3368 else if (i
.types
[op
].bitfield
.reg64
)
3370 i
.suffix
= QWORD_MNEM_SUFFIX
;
3376 else if (i
.suffix
== BYTE_MNEM_SUFFIX
)
3378 if (!check_byte_reg ())
3381 else if (i
.suffix
== LONG_MNEM_SUFFIX
)
3383 if (!check_long_reg ())
3386 else if (i
.suffix
== QWORD_MNEM_SUFFIX
)
3388 if (!check_qword_reg ())
3391 else if (i
.suffix
== WORD_MNEM_SUFFIX
)
3393 if (!check_word_reg ())
3396 else if (intel_syntax
&& i
.tm
.opcode_modifier
.ignoresize
)
3397 /* Do nothing if the instruction is going to ignore the prefix. */
3402 else if (i
.tm
.opcode_modifier
.defaultsize
3404 /* exclude fldenv/frstor/fsave/fstenv */
3405 && i
.tm
.opcode_modifier
.no_ssuf
)
3407 i
.suffix
= stackop_size
;
3409 else if (intel_syntax
3411 && (i
.tm
.operand_types
[0].bitfield
.jumpabsolute
3412 || i
.tm
.opcode_modifier
.jumpbyte
3413 || i
.tm
.opcode_modifier
.jumpintersegment
3414 || (i
.tm
.base_opcode
== 0x0f01 /* [ls][gi]dt */
3415 && i
.tm
.extension_opcode
<= 3)))
3420 if (!i
.tm
.opcode_modifier
.no_qsuf
)
3422 i
.suffix
= QWORD_MNEM_SUFFIX
;
3426 if (!i
.tm
.opcode_modifier
.no_lsuf
)
3427 i
.suffix
= LONG_MNEM_SUFFIX
;
3430 if (!i
.tm
.opcode_modifier
.no_wsuf
)
3431 i
.suffix
= WORD_MNEM_SUFFIX
;
3440 if (i
.tm
.opcode_modifier
.w
)
3442 as_bad (_("no instruction mnemonic suffix given and "
3443 "no register operands; can't size instruction"));
3449 unsigned int suffixes
;
3451 suffixes
= !i
.tm
.opcode_modifier
.no_bsuf
;
3452 if (!i
.tm
.opcode_modifier
.no_wsuf
)
3454 if (!i
.tm
.opcode_modifier
.no_lsuf
)
3456 if (!i
.tm
.opcode_modifier
.no_lsuf
)
3458 if (!i
.tm
.opcode_modifier
.no_ssuf
)
3460 if (!i
.tm
.opcode_modifier
.no_qsuf
)
3463 /* There are more than suffix matches. */
3464 if (i
.tm
.opcode_modifier
.w
3465 || ((suffixes
& (suffixes
- 1))
3466 && !i
.tm
.opcode_modifier
.defaultsize
3467 && !i
.tm
.opcode_modifier
.ignoresize
))
3469 as_bad (_("ambiguous operand size for `%s'"), i
.tm
.name
);
3475 /* Change the opcode based on the operand size given by i.suffix;
3476 We don't need to change things for byte insns. */
3478 if (i
.suffix
&& i
.suffix
!= BYTE_MNEM_SUFFIX
)
3480 /* It's not a byte, select word/dword operation. */
3481 if (i
.tm
.opcode_modifier
.w
)
3483 if (i
.tm
.opcode_modifier
.shortform
)
3484 i
.tm
.base_opcode
|= 8;
3486 i
.tm
.base_opcode
|= 1;
3489 /* Now select between word & dword operations via the operand
3490 size prefix, except for instructions that will ignore this
3492 if (i
.tm
.base_opcode
== 0x0f01
3493 && (i
.tm
.extension_opcode
== 0xc8
3494 || i
.tm
.extension_opcode
== 0xd8
3495 || i
.tm
.extension_opcode
== 0xda
3496 || i
.tm
.extension_opcode
== 0xdb
3497 || i
.tm
.extension_opcode
== 0xdf))
3499 /* monitor in SSE3 is a very special case. The default size
3500 of AX is the size of mode. The address size override
3501 prefix will change the size of AX. It is also true for
3502 invlpga, vmload, vmrun and vmsave in SVME. */
3503 if ((flag_code
== CODE_32BIT
3504 && i
.op
->regs
[0].reg_type
.bitfield
.reg16
)
3505 || (flag_code
!= CODE_32BIT
3506 && i
.op
->regs
[0].reg_type
.bitfield
.reg32
))
3507 if (!add_prefix (ADDR_PREFIX_OPCODE
))
3510 else if (i
.suffix
!= QWORD_MNEM_SUFFIX
3511 && i
.suffix
!= LONG_DOUBLE_MNEM_SUFFIX
3512 && !i
.tm
.opcode_modifier
.ignoresize
3513 && !i
.tm
.opcode_modifier
.floatmf
3514 && ((i
.suffix
== LONG_MNEM_SUFFIX
) == (flag_code
== CODE_16BIT
)
3515 || (flag_code
== CODE_64BIT
3516 && i
.tm
.opcode_modifier
.jumpbyte
)))
3518 unsigned int prefix
= DATA_PREFIX_OPCODE
;
3520 if (i
.tm
.opcode_modifier
.jumpbyte
) /* jcxz, loop */
3521 prefix
= ADDR_PREFIX_OPCODE
;
3523 if (!add_prefix (prefix
))
3527 /* Set mode64 for an operand. */
3528 if (i
.suffix
== QWORD_MNEM_SUFFIX
3529 && flag_code
== CODE_64BIT
3530 && !i
.tm
.opcode_modifier
.norex64
)
3532 /* Special case for xchg %rax,%rax. It is NOP and doesn't
3533 need rex64. cmpxchg8b is also a special case. */
3534 if (! (i
.operands
== 2
3535 && i
.tm
.base_opcode
== 0x90
3536 && i
.tm
.extension_opcode
== None
3537 && UINTS_EQUAL (i
.types
[0], acc64
)
3538 && UINTS_EQUAL (i
.types
[1], acc64
))
3539 && ! (i
.operands
== 1
3540 && i
.tm
.base_opcode
== 0xfc7
3541 && i
.tm
.extension_opcode
== 1
3542 && !operand_type_check (i
.types
[0], reg
)
3543 && operand_type_check (i
.types
[0], anymem
)))
3547 /* Size floating point instruction. */
3548 if (i
.suffix
== LONG_MNEM_SUFFIX
)
3549 if (i
.tm
.opcode_modifier
.floatmf
)
3550 i
.tm
.base_opcode
^= 4;
3557 check_byte_reg (void)
3561 for (op
= i
.operands
; --op
>= 0;)
3563 /* If this is an eight bit register, it's OK. If it's the 16 or
3564 32 bit version of an eight bit register, we will just use the
3565 low portion, and that's OK too. */
3566 if (i
.types
[op
].bitfield
.reg8
)
3569 /* movzx, movsx, pextrb and pinsrb should not generate this
3572 && (i
.tm
.base_opcode
== 0xfb7
3573 || i
.tm
.base_opcode
== 0xfb6
3574 || i
.tm
.base_opcode
== 0x63
3575 || i
.tm
.base_opcode
== 0xfbe
3576 || i
.tm
.base_opcode
== 0xfbf
3577 || i
.tm
.base_opcode
== 0x660f3a14
3578 || i
.tm
.base_opcode
== 0x660f3a20))
3581 /* crc32 doesn't generate this warning. */
3582 if (i
.tm
.base_opcode
== 0xf20f38f0)
3585 if ((i
.types
[op
].bitfield
.reg16
3586 || i
.types
[op
].bitfield
.reg32
3587 || i
.types
[op
].bitfield
.reg64
)
3588 && i
.op
[op
].regs
->reg_num
< 4)
3590 /* Prohibit these changes in the 64bit mode, since the
3591 lowering is more complicated. */
3592 if (flag_code
== CODE_64BIT
3593 && !i
.tm
.operand_types
[op
].bitfield
.inoutportreg
)
3595 as_bad (_("Incorrect register `%s%s' used with `%c' suffix"),
3596 register_prefix
, i
.op
[op
].regs
->reg_name
,
3600 #if REGISTER_WARNINGS
3602 && !i
.tm
.operand_types
[op
].bitfield
.inoutportreg
)
3603 as_warn (_("using `%s%s' instead of `%s%s' due to `%c' suffix"),
3605 (i
.op
[op
].regs
+ (i
.types
[op
].bitfield
.reg16
3606 ? REGNAM_AL
- REGNAM_AX
3607 : REGNAM_AL
- REGNAM_EAX
))->reg_name
,
3609 i
.op
[op
].regs
->reg_name
,
3614 /* Any other register is bad. */
3615 if (i
.types
[op
].bitfield
.reg16
3616 || i
.types
[op
].bitfield
.reg32
3617 || i
.types
[op
].bitfield
.reg64
3618 || i
.types
[op
].bitfield
.regmmx
3619 || i
.types
[op
].bitfield
.regxmm
3620 || i
.types
[op
].bitfield
.sreg2
3621 || i
.types
[op
].bitfield
.sreg3
3622 || i
.types
[op
].bitfield
.control
3623 || i
.types
[op
].bitfield
.debug
3624 || i
.types
[op
].bitfield
.test
3625 || i
.types
[op
].bitfield
.floatreg
3626 || i
.types
[op
].bitfield
.floatacc
)
3628 as_bad (_("`%s%s' not allowed with `%s%c'"),
3630 i
.op
[op
].regs
->reg_name
,
3640 check_long_reg (void)
3644 for (op
= i
.operands
; --op
>= 0;)
3645 /* Reject eight bit registers, except where the template requires
3646 them. (eg. movzb) */
3647 if (i
.types
[op
].bitfield
.reg8
3648 && (i
.tm
.operand_types
[op
].bitfield
.reg16
3649 || i
.tm
.operand_types
[op
].bitfield
.reg32
3650 || i
.tm
.operand_types
[op
].bitfield
.acc
))
3652 as_bad (_("`%s%s' not allowed with `%s%c'"),
3654 i
.op
[op
].regs
->reg_name
,
3659 /* Warn if the e prefix on a general reg is missing. */
3660 else if ((!quiet_warnings
|| flag_code
== CODE_64BIT
)
3661 && i
.types
[op
].bitfield
.reg16
3662 && (i
.tm
.operand_types
[op
].bitfield
.reg32
3663 || i
.tm
.operand_types
[op
].bitfield
.acc
))
3665 /* Prohibit these changes in the 64bit mode, since the
3666 lowering is more complicated. */
3667 if (flag_code
== CODE_64BIT
)
3669 as_bad (_("Incorrect register `%s%s' used with `%c' suffix"),
3670 register_prefix
, i
.op
[op
].regs
->reg_name
,
3674 #if REGISTER_WARNINGS
3676 as_warn (_("using `%s%s' instead of `%s%s' due to `%c' suffix"),
3678 (i
.op
[op
].regs
+ REGNAM_EAX
- REGNAM_AX
)->reg_name
,
3680 i
.op
[op
].regs
->reg_name
,
3684 /* Warn if the r prefix on a general reg is missing. */
3685 else if (i
.types
[op
].bitfield
.reg64
3686 && (i
.tm
.operand_types
[op
].bitfield
.reg32
3687 || i
.tm
.operand_types
[op
].bitfield
.acc
))
3690 && i
.tm
.base_opcode
== 0xf30f2d
3691 && !i
.types
[0].bitfield
.regxmm
)
3693 /* cvtss2si converts DWORD memory to Reg64. We want
3695 i
.suffix
= QWORD_MNEM_SUFFIX
;
3699 as_bad (_("Incorrect register `%s%s' used with `%c' suffix"),
3700 register_prefix
, i
.op
[op
].regs
->reg_name
,
3709 check_qword_reg (void)
3713 for (op
= i
.operands
; --op
>= 0; )
3714 /* Reject eight bit registers, except where the template requires
3715 them. (eg. movzb) */
3716 if (i
.types
[op
].bitfield
.reg8
3717 && (i
.tm
.operand_types
[op
].bitfield
.reg16
3718 || i
.tm
.operand_types
[op
].bitfield
.reg32
3719 || i
.tm
.operand_types
[op
].bitfield
.acc
))
3721 as_bad (_("`%s%s' not allowed with `%s%c'"),
3723 i
.op
[op
].regs
->reg_name
,
3728 /* Warn if the e prefix on a general reg is missing. */
3729 else if ((i
.types
[op
].bitfield
.reg16
3730 || i
.types
[op
].bitfield
.reg32
)
3731 && (i
.tm
.operand_types
[op
].bitfield
.reg32
3732 || i
.tm
.operand_types
[op
].bitfield
.acc
))
3734 /* Prohibit these changes in the 64bit mode, since the
3735 lowering is more complicated. */
3737 && i
.tm
.base_opcode
== 0xf20f2d
3738 && !i
.types
[0].bitfield
.regxmm
)
3740 /* cvtsd2si converts QWORD memory to Reg32. We don't want
3742 i
.suffix
= LONG_MNEM_SUFFIX
;
3746 as_bad (_("Incorrect register `%s%s' used with `%c' suffix"),
3747 register_prefix
, i
.op
[op
].regs
->reg_name
,
3756 check_word_reg (void)
3759 for (op
= i
.operands
; --op
>= 0;)
3760 /* Reject eight bit registers, except where the template requires
3761 them. (eg. movzb) */
3762 if (i
.types
[op
].bitfield
.reg8
3763 && (i
.tm
.operand_types
[op
].bitfield
.reg16
3764 || i
.tm
.operand_types
[op
].bitfield
.reg32
3765 || i
.tm
.operand_types
[op
].bitfield
.acc
))
3767 as_bad (_("`%s%s' not allowed with `%s%c'"),
3769 i
.op
[op
].regs
->reg_name
,
3774 /* Warn if the e prefix on a general reg is present. */
3775 else if ((!quiet_warnings
|| flag_code
== CODE_64BIT
)
3776 && i
.types
[op
].bitfield
.reg32
3777 && (i
.tm
.operand_types
[op
].bitfield
.reg16
3778 || i
.tm
.operand_types
[op
].bitfield
.acc
))
3780 /* Prohibit these changes in the 64bit mode, since the
3781 lowering is more complicated. */
3782 if (flag_code
== CODE_64BIT
)
3784 as_bad (_("Incorrect register `%s%s' used with `%c' suffix"),
3785 register_prefix
, i
.op
[op
].regs
->reg_name
,
3790 #if REGISTER_WARNINGS
3791 as_warn (_("using `%s%s' instead of `%s%s' due to `%c' suffix"),
3793 (i
.op
[op
].regs
+ REGNAM_AX
- REGNAM_EAX
)->reg_name
,
3795 i
.op
[op
].regs
->reg_name
,
3803 update_imm (unsigned int j
)
3805 i386_operand_type overlap
;
3807 overlap
= operand_type_and (i
.types
[j
], i
.tm
.operand_types
[j
]);
3808 if ((overlap
.bitfield
.imm8
3809 || overlap
.bitfield
.imm8s
3810 || overlap
.bitfield
.imm16
3811 || overlap
.bitfield
.imm32
3812 || overlap
.bitfield
.imm32s
3813 || overlap
.bitfield
.imm64
)
3814 && !UINTS_EQUAL (overlap
, imm8
)
3815 && !UINTS_EQUAL (overlap
, imm8s
)
3816 && !UINTS_EQUAL (overlap
, imm16
)
3817 && !UINTS_EQUAL (overlap
, imm32
)
3818 && !UINTS_EQUAL (overlap
, imm32s
)
3819 && !UINTS_EQUAL (overlap
, imm64
))
3823 i386_operand_type temp
;
3826 if (i
.suffix
== BYTE_MNEM_SUFFIX
)
3828 temp
.bitfield
.imm8
= overlap
.bitfield
.imm8
;
3829 temp
.bitfield
.imm8s
= overlap
.bitfield
.imm8s
;
3831 else if (i
.suffix
== WORD_MNEM_SUFFIX
)
3832 temp
.bitfield
.imm16
= overlap
.bitfield
.imm16
;
3833 else if (i
.suffix
== QWORD_MNEM_SUFFIX
)
3835 temp
.bitfield
.imm64
= overlap
.bitfield
.imm64
;
3836 temp
.bitfield
.imm32s
= overlap
.bitfield
.imm32s
;
3839 temp
.bitfield
.imm32
= overlap
.bitfield
.imm32
;
3842 else if (UINTS_EQUAL (overlap
, imm16_32_32s
)
3843 || UINTS_EQUAL (overlap
, imm16_32
)
3844 || UINTS_EQUAL (overlap
, imm16_32s
))
3846 UINTS_CLEAR (overlap
);
3847 if ((flag_code
== CODE_16BIT
) ^ (i
.prefix
[DATA_PREFIX
] != 0))
3848 overlap
.bitfield
.imm16
= 1;
3850 overlap
.bitfield
.imm32s
= 1;
3852 if (!UINTS_EQUAL (overlap
, imm8
)
3853 && !UINTS_EQUAL (overlap
, imm8s
)
3854 && !UINTS_EQUAL (overlap
, imm16
)
3855 && !UINTS_EQUAL (overlap
, imm32
)
3856 && !UINTS_EQUAL (overlap
, imm32s
)
3857 && !UINTS_EQUAL (overlap
, imm64
))
3859 as_bad (_("no instruction mnemonic suffix given; "
3860 "can't determine immediate size"));
3864 i
.types
[j
] = overlap
;
3874 for (j
= 0; j
< 2; j
++)
3875 if (update_imm (j
) == 0)
3878 i
.types
[2] = operand_type_and (i
.types
[2], i
.tm
.operand_types
[2]);
3879 assert (operand_type_check (i
.types
[2], imm
) == 0);
3887 i
.drex
.modrm_reg
= None
;
3888 i
.drex
.modrm_regmem
= None
;
3890 /* SSE5 4 operand instructions must have the destination the same as
3891 one of the inputs. Figure out the destination register and cache
3892 it away in the drex field, and remember which fields to use for
3894 if (i
.tm
.opcode_modifier
.drex
3895 && i
.tm
.opcode_modifier
.drexv
3898 i
.tm
.extension_opcode
= None
;
3900 /* Case 1: 4 operand insn, dest = src1, src3 = register. */
3901 if (i
.types
[0].bitfield
.regxmm
!= 0
3902 && i
.types
[1].bitfield
.regxmm
!= 0
3903 && i
.types
[2].bitfield
.regxmm
!= 0
3904 && i
.types
[3].bitfield
.regxmm
!= 0
3905 && i
.op
[0].regs
->reg_num
== i
.op
[3].regs
->reg_num
3906 && i
.op
[0].regs
->reg_flags
== i
.op
[3].regs
->reg_flags
)
3908 /* Clear the arguments that are stored in drex. */
3909 UINTS_CLEAR (i
.types
[0]);
3910 UINTS_CLEAR (i
.types
[3]);
3911 i
.reg_operands
-= 2;
3913 /* There are two different ways to encode a 4 operand
3914 instruction with all registers that uses OC1 set to
3915 0 or 1. Favor setting OC1 to 0 since this mimics the
3916 actions of other SSE5 assemblers. Use modrm encoding 2
3917 for register/register. Include the high order bit that
3918 is normally stored in the REX byte in the register
3920 i
.tm
.extension_opcode
= DREX_X1_XMEM_X2_X1
;
3921 i
.drex
.modrm_reg
= 2;
3922 i
.drex
.modrm_regmem
= 1;
3923 i
.drex
.reg
= (i
.op
[3].regs
->reg_num
3924 + ((i
.op
[3].regs
->reg_flags
& RegRex
) ? 8 : 0));
3927 /* Case 2: 4 operand insn, dest = src1, src3 = memory. */
3928 else if (i
.types
[0].bitfield
.regxmm
!= 0
3929 && i
.types
[1].bitfield
.regxmm
!= 0
3930 && (i
.types
[2].bitfield
.regxmm
3931 || operand_type_check (i
.types
[2], anymem
))
3932 && i
.types
[3].bitfield
.regxmm
!= 0
3933 && i
.op
[0].regs
->reg_num
== i
.op
[3].regs
->reg_num
3934 && i
.op
[0].regs
->reg_flags
== i
.op
[3].regs
->reg_flags
)
3936 /* clear the arguments that are stored in drex */
3937 UINTS_CLEAR (i
.types
[0]);
3938 UINTS_CLEAR (i
.types
[3]);
3939 i
.reg_operands
-= 2;
3941 /* Specify the modrm encoding for memory addressing. Include
3942 the high order bit that is normally stored in the REX byte
3943 in the register field. */
3944 i
.tm
.extension_opcode
= DREX_X1_X2_XMEM_X1
;
3945 i
.drex
.modrm_reg
= 1;
3946 i
.drex
.modrm_regmem
= 2;
3947 i
.drex
.reg
= (i
.op
[3].regs
->reg_num
3948 + ((i
.op
[3].regs
->reg_flags
& RegRex
) ? 8 : 0));
3951 /* Case 3: 4 operand insn, dest = src1, src2 = memory. */
3952 else if (i
.types
[0].bitfield
.regxmm
!= 0
3953 && operand_type_check (i
.types
[1], anymem
) != 0
3954 && i
.types
[2].bitfield
.regxmm
!= 0
3955 && i
.types
[3].bitfield
.regxmm
!= 0
3956 && i
.op
[0].regs
->reg_num
== i
.op
[3].regs
->reg_num
3957 && i
.op
[0].regs
->reg_flags
== i
.op
[3].regs
->reg_flags
)
3959 /* Clear the arguments that are stored in drex. */
3960 UINTS_CLEAR (i
.types
[0]);
3961 UINTS_CLEAR (i
.types
[3]);
3962 i
.reg_operands
-= 2;
3964 /* Specify the modrm encoding for memory addressing. Include
3965 the high order bit that is normally stored in the REX byte
3966 in the register field. */
3967 i
.tm
.extension_opcode
= DREX_X1_XMEM_X2_X1
;
3968 i
.drex
.modrm_reg
= 2;
3969 i
.drex
.modrm_regmem
= 1;
3970 i
.drex
.reg
= (i
.op
[3].regs
->reg_num
3971 + ((i
.op
[3].regs
->reg_flags
& RegRex
) ? 8 : 0));
3974 /* Case 4: 4 operand insn, dest = src3, src2 = register. */
3975 else if (i
.types
[0].bitfield
.regxmm
!= 0
3976 && i
.types
[1].bitfield
.regxmm
!= 0
3977 && i
.types
[2].bitfield
.regxmm
!= 0
3978 && i
.types
[3].bitfield
.regxmm
!= 0
3979 && i
.op
[2].regs
->reg_num
== i
.op
[3].regs
->reg_num
3980 && i
.op
[2].regs
->reg_flags
== i
.op
[3].regs
->reg_flags
)
3982 /* clear the arguments that are stored in drex */
3983 UINTS_CLEAR (i
.types
[2]);
3984 UINTS_CLEAR (i
.types
[3]);
3985 i
.reg_operands
-= 2;
3987 /* There are two different ways to encode a 4 operand
3988 instruction with all registers that uses OC1 set to
3989 0 or 1. Favor setting OC1 to 0 since this mimics the
3990 actions of other SSE5 assemblers. Use modrm encoding
3991 2 for register/register. Include the high order bit that
3992 is normally stored in the REX byte in the register
3994 i
.tm
.extension_opcode
= DREX_XMEM_X1_X2_X2
;
3995 i
.drex
.modrm_reg
= 1;
3996 i
.drex
.modrm_regmem
= 0;
3998 /* Remember the register, including the upper bits */
3999 i
.drex
.reg
= (i
.op
[3].regs
->reg_num
4000 + ((i
.op
[3].regs
->reg_flags
& RegRex
) ? 8 : 0));
4003 /* Case 5: 4 operand insn, dest = src3, src2 = memory. */
4004 else if (i
.types
[0].bitfield
.regxmm
!= 0
4005 && (i
.types
[1].bitfield
.regxmm
4006 || operand_type_check (i
.types
[1], anymem
))
4007 && i
.types
[2].bitfield
.regxmm
!= 0
4008 && i
.types
[3].bitfield
.regxmm
!= 0
4009 && i
.op
[2].regs
->reg_num
== i
.op
[3].regs
->reg_num
4010 && i
.op
[2].regs
->reg_flags
== i
.op
[3].regs
->reg_flags
)
4012 /* Clear the arguments that are stored in drex. */
4013 UINTS_CLEAR (i
.types
[2]);
4014 UINTS_CLEAR (i
.types
[3]);
4015 i
.reg_operands
-= 2;
4017 /* Specify the modrm encoding and remember the register
4018 including the bits normally stored in the REX byte. */
4019 i
.tm
.extension_opcode
= DREX_X1_XMEM_X2_X2
;
4020 i
.drex
.modrm_reg
= 0;
4021 i
.drex
.modrm_regmem
= 1;
4022 i
.drex
.reg
= (i
.op
[3].regs
->reg_num
4023 + ((i
.op
[3].regs
->reg_flags
& RegRex
) ? 8 : 0));
4026 /* Case 6: 4 operand insn, dest = src3, src1 = memory. */
4027 else if (operand_type_check (i
.types
[0], anymem
) != 0
4028 && i
.types
[1].bitfield
.regxmm
!= 0
4029 && i
.types
[2].bitfield
.regxmm
!= 0
4030 && i
.types
[3].bitfield
.regxmm
!= 0
4031 && i
.op
[2].regs
->reg_num
== i
.op
[3].regs
->reg_num
4032 && i
.op
[2].regs
->reg_flags
== i
.op
[3].regs
->reg_flags
)
4034 /* clear the arguments that are stored in drex */
4035 UINTS_CLEAR (i
.types
[2]);
4036 UINTS_CLEAR (i
.types
[3]);
4037 i
.reg_operands
-= 2;
4039 /* Specify the modrm encoding and remember the register
4040 including the bits normally stored in the REX byte. */
4041 i
.tm
.extension_opcode
= DREX_XMEM_X1_X2_X2
;
4042 i
.drex
.modrm_reg
= 1;
4043 i
.drex
.modrm_regmem
= 0;
4044 i
.drex
.reg
= (i
.op
[3].regs
->reg_num
4045 + ((i
.op
[3].regs
->reg_flags
& RegRex
) ? 8 : 0));
4049 as_bad (_("Incorrect operands for the '%s' instruction"),
4053 /* SSE5 instructions with the DREX byte where the only memory operand
4054 is in the 2nd argument, and the first and last xmm register must
4055 match, and is encoded in the DREX byte. */
4056 else if (i
.tm
.opcode_modifier
.drex
4057 && !i
.tm
.opcode_modifier
.drexv
4060 /* Case 1: 4 operand insn, dest = src1, src3 = reg/mem. */
4061 if (i
.types
[0].bitfield
.regxmm
!= 0
4062 && (i
.types
[1].bitfield
.regxmm
4063 || operand_type_check(i
.types
[1], anymem
))
4064 && i
.types
[2].bitfield
.regxmm
!= 0
4065 && i
.types
[3].bitfield
.regxmm
!= 0
4066 && i
.op
[0].regs
->reg_num
== i
.op
[3].regs
->reg_num
4067 && i
.op
[0].regs
->reg_flags
== i
.op
[3].regs
->reg_flags
)
4069 /* clear the arguments that are stored in drex */
4070 UINTS_CLEAR (i
.types
[0]);
4071 UINTS_CLEAR (i
.types
[3]);
4072 i
.reg_operands
-= 2;
4074 /* Specify the modrm encoding and remember the register
4075 including the high bit normally stored in the REX
4077 i
.drex
.modrm_reg
= 2;
4078 i
.drex
.modrm_regmem
= 1;
4079 i
.drex
.reg
= (i
.op
[3].regs
->reg_num
4080 + ((i
.op
[3].regs
->reg_flags
& RegRex
) ? 8 : 0));
4084 as_bad (_("Incorrect operands for the '%s' instruction"),
4088 /* SSE5 3 operand instructions that the result is a register, being
4089 either operand can be a memory operand, using OC0 to note which
4090 one is the memory. */
4091 else if (i
.tm
.opcode_modifier
.drex
4092 && i
.tm
.opcode_modifier
.drexv
4095 i
.tm
.extension_opcode
= None
;
4097 /* Case 1: 3 operand insn, src1 = register. */
4098 if (i
.types
[0].bitfield
.regxmm
!= 0
4099 && i
.types
[1].bitfield
.regxmm
!= 0
4100 && i
.types
[2].bitfield
.regxmm
!= 0)
4102 /* Clear the arguments that are stored in drex. */
4103 UINTS_CLEAR (i
.types
[2]);
4106 /* Specify the modrm encoding and remember the register
4107 including the high bit normally stored in the REX byte. */
4108 i
.tm
.extension_opcode
= DREX_XMEM_X1_X2
;
4109 i
.drex
.modrm_reg
= 1;
4110 i
.drex
.modrm_regmem
= 0;
4111 i
.drex
.reg
= (i
.op
[2].regs
->reg_num
4112 + ((i
.op
[2].regs
->reg_flags
& RegRex
) ? 8 : 0));
4115 /* Case 2: 3 operand insn, src1 = memory. */
4116 else if (operand_type_check (i
.types
[0], anymem
) != 0
4117 && i
.types
[1].bitfield
.regxmm
!= 0
4118 && i
.types
[2].bitfield
.regxmm
!= 0)
4120 /* Clear the arguments that are stored in drex. */
4121 UINTS_CLEAR (i
.types
[2]);
4124 /* Specify the modrm encoding and remember the register
4125 including the high bit normally stored in the REX
4127 i
.tm
.extension_opcode
= DREX_XMEM_X1_X2
;
4128 i
.drex
.modrm_reg
= 1;
4129 i
.drex
.modrm_regmem
= 0;
4130 i
.drex
.reg
= (i
.op
[2].regs
->reg_num
4131 + ((i
.op
[2].regs
->reg_flags
& RegRex
) ? 8 : 0));
4134 /* Case 3: 3 operand insn, src2 = memory. */
4135 else if (i
.types
[0].bitfield
.regxmm
!= 0
4136 && operand_type_check (i
.types
[1], anymem
) != 0
4137 && i
.types
[2].bitfield
.regxmm
!= 0)
4139 /* Clear the arguments that are stored in drex. */
4140 UINTS_CLEAR (i
.types
[2]);
4143 /* Specify the modrm encoding and remember the register
4144 including the high bit normally stored in the REX byte. */
4145 i
.tm
.extension_opcode
= DREX_X1_XMEM_X2
;
4146 i
.drex
.modrm_reg
= 0;
4147 i
.drex
.modrm_regmem
= 1;
4148 i
.drex
.reg
= (i
.op
[2].regs
->reg_num
4149 + ((i
.op
[2].regs
->reg_flags
& RegRex
) ? 8 : 0));
4153 as_bad (_("Incorrect operands for the '%s' instruction"),
4157 /* SSE5 4 operand instructions that are the comparison instructions
4158 where the first operand is the immediate value of the comparison
4160 else if (i
.tm
.opcode_modifier
.drexc
!= 0 && i
.operands
== 4)
4162 /* Case 1: 4 operand insn, src1 = reg/memory. */
4163 if (operand_type_check (i
.types
[0], imm
) != 0
4164 && (i
.types
[1].bitfield
.regxmm
4165 || operand_type_check (i
.types
[1], anymem
))
4166 && i
.types
[2].bitfield
.regxmm
!= 0
4167 && i
.types
[3].bitfield
.regxmm
!= 0)
4169 /* clear the arguments that are stored in drex */
4170 UINTS_CLEAR (i
.types
[3]);
4173 /* Specify the modrm encoding and remember the register
4174 including the high bit normally stored in the REX byte. */
4175 i
.drex
.modrm_reg
= 2;
4176 i
.drex
.modrm_regmem
= 1;
4177 i
.drex
.reg
= (i
.op
[3].regs
->reg_num
4178 + ((i
.op
[3].regs
->reg_flags
& RegRex
) ? 8 : 0));
4181 /* Case 2: 3 operand insn with ImmExt that places the
4182 opcode_extension as an immediate argument. This is used for
4183 all of the varients of comparison that supplies the appropriate
4184 value as part of the instruction. */
4185 else if ((i
.types
[0].bitfield
.regxmm
4186 || operand_type_check (i
.types
[0], anymem
))
4187 && i
.types
[1].bitfield
.regxmm
!= 0
4188 && i
.types
[2].bitfield
.regxmm
!= 0
4189 && operand_type_check (i
.types
[3], imm
) != 0)
4191 /* clear the arguments that are stored in drex */
4192 UINTS_CLEAR (i
.types
[2]);
4195 /* Specify the modrm encoding and remember the register
4196 including the high bit normally stored in the REX byte. */
4197 i
.drex
.modrm_reg
= 1;
4198 i
.drex
.modrm_regmem
= 0;
4199 i
.drex
.reg
= (i
.op
[2].regs
->reg_num
4200 + ((i
.op
[2].regs
->reg_flags
& RegRex
) ? 8 : 0));
4204 as_bad (_("Incorrect operands for the '%s' instruction"),
4208 else if (i
.tm
.opcode_modifier
.drex
4209 || i
.tm
.opcode_modifier
.drexv
4210 || i
.tm
.opcode_modifier
.drexc
)
4211 as_bad (_("Internal error for the '%s' instruction"), i
.tm
.name
);
4215 process_operands (void)
4217 /* Default segment register this instruction will use for memory
4218 accesses. 0 means unknown. This is only for optimizing out
4219 unnecessary segment overrides. */
4220 const seg_entry
*default_seg
= 0;
4222 /* Handle all of the DREX munging that SSE5 needs. */
4223 if (i
.tm
.opcode_modifier
.drex
4224 || i
.tm
.opcode_modifier
.drexv
4225 || i
.tm
.opcode_modifier
.drexc
)
4228 /* The imul $imm, %reg instruction is converted into
4229 imul $imm, %reg, %reg, and the clr %reg instruction
4230 is converted into xor %reg, %reg. */
4231 if (i
.tm
.opcode_modifier
.regkludge
)
4233 if (i
.tm
.cpu_flags
.bitfield
.cpusse4_1
)
4235 /* The first operand in instruction blendvpd, blendvps and
4236 pblendvb in SSE4.1 is implicit and must be xmm0. */
4237 assert (i
.operands
== 3
4238 && i
.reg_operands
>= 2
4239 && UINTS_EQUAL (i
.types
[0], regxmm
));
4240 if (i
.op
[0].regs
->reg_num
!= 0)
4243 as_bad (_("the last operand of `%s' must be `%sxmm0'"),
4244 i
.tm
.name
, register_prefix
);
4246 as_bad (_("the first operand of `%s' must be `%sxmm0'"),
4247 i
.tm
.name
, register_prefix
);
4252 i
.types
[0] = i
.types
[1];
4253 i
.types
[1] = i
.types
[2];
4257 /* We need to adjust fields in i.tm since they are used by
4258 build_modrm_byte. */
4259 i
.tm
.operand_types
[0] = i
.tm
.operand_types
[1];
4260 i
.tm
.operand_types
[1] = i
.tm
.operand_types
[2];
4265 unsigned int first_reg_op
;
4267 if (operand_type_check (i
.types
[0], reg
))
4271 /* Pretend we saw the extra register operand. */
4272 assert (i
.reg_operands
== 1
4273 && i
.op
[first_reg_op
+ 1].regs
== 0);
4274 i
.op
[first_reg_op
+ 1].regs
= i
.op
[first_reg_op
].regs
;
4275 i
.types
[first_reg_op
+ 1] = i
.types
[first_reg_op
];
4281 if (i
.tm
.opcode_modifier
.shortform
)
4283 if (i
.types
[0].bitfield
.sreg2
4284 || i
.types
[0].bitfield
.sreg3
)
4286 if (i
.tm
.base_opcode
== POP_SEG_SHORT
4287 && i
.op
[0].regs
->reg_num
== 1)
4289 as_bad (_("you can't `pop %%cs'"));
4292 i
.tm
.base_opcode
|= (i
.op
[0].regs
->reg_num
<< 3);
4293 if ((i
.op
[0].regs
->reg_flags
& RegRex
) != 0)
4298 /* The register or float register operand is in operand
4302 if (i
.types
[0].bitfield
.floatreg
4303 || operand_type_check (i
.types
[0], reg
))
4307 /* Register goes in low 3 bits of opcode. */
4308 i
.tm
.base_opcode
|= i
.op
[op
].regs
->reg_num
;
4309 if ((i
.op
[op
].regs
->reg_flags
& RegRex
) != 0)
4311 if (!quiet_warnings
&& i
.tm
.opcode_modifier
.ugh
)
4313 /* Warn about some common errors, but press on regardless.
4314 The first case can be generated by gcc (<= 2.8.1). */
4315 if (i
.operands
== 2)
4317 /* Reversed arguments on faddp, fsubp, etc. */
4318 as_warn (_("translating to `%s %s%s,%s%s'"), i
.tm
.name
,
4319 register_prefix
, i
.op
[1].regs
->reg_name
,
4320 register_prefix
, i
.op
[0].regs
->reg_name
);
4324 /* Extraneous `l' suffix on fp insn. */
4325 as_warn (_("translating to `%s %s%s'"), i
.tm
.name
,
4326 register_prefix
, i
.op
[0].regs
->reg_name
);
4331 else if (i
.tm
.opcode_modifier
.modrm
)
4333 /* The opcode is completed (modulo i.tm.extension_opcode which
4334 must be put into the modrm byte). Now, we make the modrm and
4335 index base bytes based on all the info we've collected. */
4337 default_seg
= build_modrm_byte ();
4339 else if ((i
.tm
.base_opcode
& ~0x3) == MOV_AX_DISP32
)
4343 else if (i
.tm
.opcode_modifier
.isstring
)
4345 /* For the string instructions that allow a segment override
4346 on one of their operands, the default segment is ds. */
4350 if (i
.tm
.base_opcode
== 0x8d /* lea */
4353 as_warn (_("segment override on `%s' is ineffectual"), i
.tm
.name
);
4355 /* If a segment was explicitly specified, and the specified segment
4356 is not the default, use an opcode prefix to select it. If we
4357 never figured out what the default segment is, then default_seg
4358 will be zero at this point, and the specified segment prefix will
4360 if ((i
.seg
[0]) && (i
.seg
[0] != default_seg
))
4362 if (!add_prefix (i
.seg
[0]->seg_prefix
))
4368 static const seg_entry
*
4369 build_modrm_byte (void)
4371 const seg_entry
*default_seg
= 0;
4373 /* SSE5 4 operand instructions are encoded in such a way that one of
4374 the inputs must match the destination register. Process_drex hides
4375 the 3rd argument in the drex field, so that by the time we get
4376 here, it looks to GAS as if this is a 2 operand instruction. */
4377 if ((i
.tm
.opcode_modifier
.drex
4378 || i
.tm
.opcode_modifier
.drexv
4379 || i
.tm
.opcode_modifier
.drexc
)
4380 && i
.reg_operands
== 2)
4382 const reg_entry
*reg
= i
.op
[i
.drex
.modrm_reg
].regs
;
4383 const reg_entry
*regmem
= i
.op
[i
.drex
.modrm_regmem
].regs
;
4385 i
.rm
.reg
= reg
->reg_num
;
4386 i
.rm
.regmem
= regmem
->reg_num
;
4388 if ((reg
->reg_flags
& RegRex
) != 0)
4390 if ((regmem
->reg_flags
& RegRex
) != 0)
4394 /* i.reg_operands MUST be the number of real register operands;
4395 implicit registers do not count. */
4396 else if (i
.reg_operands
== 2)
4398 unsigned int source
, dest
;
4406 /* When there are 3 operands, one of them may be immediate,
4407 which may be the first or the last operand. Otherwise,
4408 the first operand must be shift count register (cl). */
4409 assert (i
.imm_operands
== 1
4410 || (i
.imm_operands
== 0
4411 && i
.types
[0].bitfield
.shiftcount
));
4412 if (operand_type_check (i
.types
[0], imm
)
4413 || i
.types
[0].bitfield
.shiftcount
)
4419 /* When there are 4 operands, the first two must be immediate
4420 operands. The source operand will be the 3rd one. */
4421 assert (i
.imm_operands
== 2
4422 && operand_type_check (i
.types
[0], imm
)
4423 && operand_type_check (i
.types
[1], imm
));
4433 /* One of the register operands will be encoded in the i.tm.reg
4434 field, the other in the combined i.tm.mode and i.tm.regmem
4435 fields. If no form of this instruction supports a memory
4436 destination operand, then we assume the source operand may
4437 sometimes be a memory operand and so we need to store the
4438 destination in the i.rm.reg field. */
4439 if (!i
.tm
.operand_types
[dest
].bitfield
.regmem
4440 && operand_type_check (i
.tm
.operand_types
[dest
], anymem
) == 0)
4442 i
.rm
.reg
= i
.op
[dest
].regs
->reg_num
;
4443 i
.rm
.regmem
= i
.op
[source
].regs
->reg_num
;
4444 if ((i
.op
[dest
].regs
->reg_flags
& RegRex
) != 0)
4446 if ((i
.op
[source
].regs
->reg_flags
& RegRex
) != 0)
4451 i
.rm
.reg
= i
.op
[source
].regs
->reg_num
;
4452 i
.rm
.regmem
= i
.op
[dest
].regs
->reg_num
;
4453 if ((i
.op
[dest
].regs
->reg_flags
& RegRex
) != 0)
4455 if ((i
.op
[source
].regs
->reg_flags
& RegRex
) != 0)
4458 if (flag_code
!= CODE_64BIT
&& (i
.rex
& (REX_R
| REX_B
)))
4460 if (!i
.types
[0].bitfield
.control
4461 && !i
.types
[1].bitfield
.control
)
4463 i
.rex
&= ~(REX_R
| REX_B
);
4464 add_prefix (LOCK_PREFIX_OPCODE
);
4468 { /* If it's not 2 reg operands... */
4471 unsigned int fake_zero_displacement
= 0;
4474 /* This has been precalculated for SSE5 instructions
4475 that have a DREX field earlier in process_drex. */
4476 if (i
.tm
.opcode_modifier
.drex
4477 || i
.tm
.opcode_modifier
.drexv
4478 || i
.tm
.opcode_modifier
.drexc
)
4479 op
= i
.drex
.modrm_regmem
;
4482 for (op
= 0; op
< i
.operands
; op
++)
4483 if (operand_type_check (i
.types
[op
], anymem
))
4485 assert (op
< i
.operands
);
4490 if (i
.base_reg
== 0)
4493 if (!i
.disp_operands
)
4494 fake_zero_displacement
= 1;
4495 if (i
.index_reg
== 0)
4497 /* Operand is just <disp> */
4498 if (flag_code
== CODE_64BIT
)
4500 /* 64bit mode overwrites the 32bit absolute
4501 addressing by RIP relative addressing and
4502 absolute addressing is encoded by one of the
4503 redundant SIB forms. */
4504 i
.rm
.regmem
= ESCAPE_TO_TWO_BYTE_ADDRESSING
;
4505 i
.sib
.base
= NO_BASE_REGISTER
;
4506 i
.sib
.index
= NO_INDEX_REGISTER
;
4507 i
.types
[op
] = ((i
.prefix
[ADDR_PREFIX
] == 0)
4508 ? disp32s
: disp32
);
4510 else if ((flag_code
== CODE_16BIT
)
4511 ^ (i
.prefix
[ADDR_PREFIX
] != 0))
4513 i
.rm
.regmem
= NO_BASE_REGISTER_16
;
4514 i
.types
[op
] = disp16
;
4518 i
.rm
.regmem
= NO_BASE_REGISTER
;
4519 i
.types
[op
] = disp32
;
4522 else /* !i.base_reg && i.index_reg */
4524 if (i
.index_reg
->reg_num
== RegEiz
4525 || i
.index_reg
->reg_num
== RegRiz
)
4526 i
.sib
.index
= NO_INDEX_REGISTER
;
4528 i
.sib
.index
= i
.index_reg
->reg_num
;
4529 i
.sib
.base
= NO_BASE_REGISTER
;
4530 i
.sib
.scale
= i
.log2_scale_factor
;
4531 i
.rm
.regmem
= ESCAPE_TO_TWO_BYTE_ADDRESSING
;
4532 i
.types
[op
].bitfield
.disp8
= 0;
4533 i
.types
[op
].bitfield
.disp16
= 0;
4534 i
.types
[op
].bitfield
.disp64
= 0;
4535 if (flag_code
!= CODE_64BIT
)
4537 /* Must be 32 bit */
4538 i
.types
[op
].bitfield
.disp32
= 1;
4539 i
.types
[op
].bitfield
.disp32s
= 0;
4543 i
.types
[op
].bitfield
.disp32
= 0;
4544 i
.types
[op
].bitfield
.disp32s
= 1;
4546 if ((i
.index_reg
->reg_flags
& RegRex
) != 0)
4550 /* RIP addressing for 64bit mode. */
4551 else if (i
.base_reg
->reg_num
== RegRip
)
4553 i
.rm
.regmem
= NO_BASE_REGISTER
;
4554 i
.types
[op
].bitfield
.disp8
= 0;
4555 i
.types
[op
].bitfield
.disp16
= 0;
4556 i
.types
[op
].bitfield
.disp32
= 0;
4557 i
.types
[op
].bitfield
.disp32s
= 1;
4558 i
.types
[op
].bitfield
.disp64
= 0;
4559 i
.flags
[op
] |= Operand_PCrel
;
4560 if (! i
.disp_operands
)
4561 fake_zero_displacement
= 1;
4563 else if (i
.base_reg
->reg_type
.bitfield
.reg16
)
4565 switch (i
.base_reg
->reg_num
)
4568 if (i
.index_reg
== 0)
4570 else /* (%bx,%si) -> 0, or (%bx,%di) -> 1 */
4571 i
.rm
.regmem
= i
.index_reg
->reg_num
- 6;
4575 if (i
.index_reg
== 0)
4578 if (operand_type_check (i
.types
[op
], disp
) == 0)
4580 /* fake (%bp) into 0(%bp) */
4581 i
.types
[op
].bitfield
.disp8
= 1;
4582 fake_zero_displacement
= 1;
4585 else /* (%bp,%si) -> 2, or (%bp,%di) -> 3 */
4586 i
.rm
.regmem
= i
.index_reg
->reg_num
- 6 + 2;
4588 default: /* (%si) -> 4 or (%di) -> 5 */
4589 i
.rm
.regmem
= i
.base_reg
->reg_num
- 6 + 4;
4591 i
.rm
.mode
= mode_from_disp_size (i
.types
[op
]);
4593 else /* i.base_reg and 32/64 bit mode */
4595 if (flag_code
== CODE_64BIT
4596 && operand_type_check (i
.types
[op
], disp
))
4598 i386_operand_type temp
;
4600 temp
.bitfield
.disp8
= i
.types
[op
].bitfield
.disp8
;
4602 if (i
.prefix
[ADDR_PREFIX
] == 0)
4603 i
.types
[op
].bitfield
.disp32s
= 1;
4605 i
.types
[op
].bitfield
.disp32
= 1;
4608 i
.rm
.regmem
= i
.base_reg
->reg_num
;
4609 if ((i
.base_reg
->reg_flags
& RegRex
) != 0)
4611 i
.sib
.base
= i
.base_reg
->reg_num
;
4612 /* x86-64 ignores REX prefix bit here to avoid decoder
4614 if ((i
.base_reg
->reg_num
& 7) == EBP_REG_NUM
)
4617 if (i
.disp_operands
== 0)
4619 fake_zero_displacement
= 1;
4620 i
.types
[op
].bitfield
.disp8
= 1;
4623 else if (i
.base_reg
->reg_num
== ESP_REG_NUM
)
4627 i
.sib
.scale
= i
.log2_scale_factor
;
4628 if (i
.index_reg
== 0)
4630 /* <disp>(%esp) becomes two byte modrm with no index
4631 register. We've already stored the code for esp
4632 in i.rm.regmem ie. ESCAPE_TO_TWO_BYTE_ADDRESSING.
4633 Any base register besides %esp will not use the
4634 extra modrm byte. */
4635 i
.sib
.index
= NO_INDEX_REGISTER
;
4639 if (i
.index_reg
->reg_num
== RegEiz
4640 || i
.index_reg
->reg_num
== RegRiz
)
4641 i
.sib
.index
= NO_INDEX_REGISTER
;
4643 i
.sib
.index
= i
.index_reg
->reg_num
;
4644 i
.rm
.regmem
= ESCAPE_TO_TWO_BYTE_ADDRESSING
;
4645 if ((i
.index_reg
->reg_flags
& RegRex
) != 0)
4650 && (i
.reloc
[op
] == BFD_RELOC_386_TLS_DESC_CALL
4651 || i
.reloc
[op
] == BFD_RELOC_X86_64_TLSDESC_CALL
))
4654 i
.rm
.mode
= mode_from_disp_size (i
.types
[op
]);
4657 if (fake_zero_displacement
)
4659 /* Fakes a zero displacement assuming that i.types[op]
4660 holds the correct displacement size. */
4663 assert (i
.op
[op
].disps
== 0);
4664 exp
= &disp_expressions
[i
.disp_operands
++];
4665 i
.op
[op
].disps
= exp
;
4666 exp
->X_op
= O_constant
;
4667 exp
->X_add_number
= 0;
4668 exp
->X_add_symbol
= (symbolS
*) 0;
4669 exp
->X_op_symbol
= (symbolS
*) 0;
4673 /* Fill in i.rm.reg or i.rm.regmem field with register operand
4674 (if any) based on i.tm.extension_opcode. Again, we must be
4675 careful to make sure that segment/control/debug/test/MMX
4676 registers are coded into the i.rm.reg field. */
4681 /* This has been precalculated for SSE5 instructions
4682 that have a DREX field earlier in process_drex. */
4683 if (i
.tm
.opcode_modifier
.drex
4684 || i
.tm
.opcode_modifier
.drexv
4685 || i
.tm
.opcode_modifier
.drexc
)
4687 op
= i
.drex
.modrm_reg
;
4688 i
.rm
.reg
= i
.op
[op
].regs
->reg_num
;
4689 if ((i
.op
[op
].regs
->reg_flags
& RegRex
) != 0)
4694 for (op
= 0; op
< i
.operands
; op
++)
4695 if (i
.types
[op
].bitfield
.reg8
4696 || i
.types
[op
].bitfield
.reg16
4697 || i
.types
[op
].bitfield
.reg32
4698 || i
.types
[op
].bitfield
.reg64
4699 || i
.types
[op
].bitfield
.regmmx
4700 || i
.types
[op
].bitfield
.regxmm
4701 || i
.types
[op
].bitfield
.sreg2
4702 || i
.types
[op
].bitfield
.sreg3
4703 || i
.types
[op
].bitfield
.control
4704 || i
.types
[op
].bitfield
.debug
4705 || i
.types
[op
].bitfield
.test
)
4708 assert (op
< i
.operands
);
4710 /* If there is an extension opcode to put here, the
4711 register number must be put into the regmem field. */
4712 if (i
.tm
.extension_opcode
!= None
)
4714 i
.rm
.regmem
= i
.op
[op
].regs
->reg_num
;
4715 if ((i
.op
[op
].regs
->reg_flags
& RegRex
) != 0)
4720 i
.rm
.reg
= i
.op
[op
].regs
->reg_num
;
4721 if ((i
.op
[op
].regs
->reg_flags
& RegRex
) != 0)
4726 /* Now, if no memory operand has set i.rm.mode = 0, 1, 2 we
4727 must set it to 3 to indicate this is a register operand
4728 in the regmem field. */
4729 if (!i
.mem_operands
)
4733 /* Fill in i.rm.reg field with extension opcode (if any). */
4734 if (i
.tm
.extension_opcode
!= None
4735 && !(i
.tm
.opcode_modifier
.drex
4736 || i
.tm
.opcode_modifier
.drexv
4737 || i
.tm
.opcode_modifier
.drexc
))
4738 i
.rm
.reg
= i
.tm
.extension_opcode
;
4744 output_branch (void)
4749 relax_substateT subtype
;
4754 if (flag_code
== CODE_16BIT
)
4758 if (i
.prefix
[DATA_PREFIX
] != 0)
4764 /* Pentium4 branch hints. */
4765 if (i
.prefix
[SEG_PREFIX
] == CS_PREFIX_OPCODE
/* not taken */
4766 || i
.prefix
[SEG_PREFIX
] == DS_PREFIX_OPCODE
/* taken */)
4771 if (i
.prefix
[REX_PREFIX
] != 0)
4777 if (i
.prefixes
!= 0 && !intel_syntax
)
4778 as_warn (_("skipping prefixes on this instruction"));
4780 /* It's always a symbol; End frag & setup for relax.
4781 Make sure there is enough room in this frag for the largest
4782 instruction we may generate in md_convert_frag. This is 2
4783 bytes for the opcode and room for the prefix and largest
4785 frag_grow (prefix
+ 2 + 4);
4786 /* Prefix and 1 opcode byte go in fr_fix. */
4787 p
= frag_more (prefix
+ 1);
4788 if (i
.prefix
[DATA_PREFIX
] != 0)
4789 *p
++ = DATA_PREFIX_OPCODE
;
4790 if (i
.prefix
[SEG_PREFIX
] == CS_PREFIX_OPCODE
4791 || i
.prefix
[SEG_PREFIX
] == DS_PREFIX_OPCODE
)
4792 *p
++ = i
.prefix
[SEG_PREFIX
];
4793 if (i
.prefix
[REX_PREFIX
] != 0)
4794 *p
++ = i
.prefix
[REX_PREFIX
];
4795 *p
= i
.tm
.base_opcode
;
4797 if ((unsigned char) *p
== JUMP_PC_RELATIVE
)
4798 subtype
= ENCODE_RELAX_STATE (UNCOND_JUMP
, SMALL
);
4799 else if (cpu_arch_flags
.bitfield
.cpui386
)
4800 subtype
= ENCODE_RELAX_STATE (COND_JUMP
, SMALL
);
4802 subtype
= ENCODE_RELAX_STATE (COND_JUMP86
, SMALL
);
4805 sym
= i
.op
[0].disps
->X_add_symbol
;
4806 off
= i
.op
[0].disps
->X_add_number
;
4808 if (i
.op
[0].disps
->X_op
!= O_constant
4809 && i
.op
[0].disps
->X_op
!= O_symbol
)
4811 /* Handle complex expressions. */
4812 sym
= make_expr_symbol (i
.op
[0].disps
);
4816 /* 1 possible extra opcode + 4 byte displacement go in var part.
4817 Pass reloc in fr_var. */
4818 frag_var (rs_machine_dependent
, 5, i
.reloc
[0], subtype
, sym
, off
, p
);
4828 if (i
.tm
.opcode_modifier
.jumpbyte
)
4830 /* This is a loop or jecxz type instruction. */
4832 if (i
.prefix
[ADDR_PREFIX
] != 0)
4834 FRAG_APPEND_1_CHAR (ADDR_PREFIX_OPCODE
);
4837 /* Pentium4 branch hints. */
4838 if (i
.prefix
[SEG_PREFIX
] == CS_PREFIX_OPCODE
/* not taken */
4839 || i
.prefix
[SEG_PREFIX
] == DS_PREFIX_OPCODE
/* taken */)
4841 FRAG_APPEND_1_CHAR (i
.prefix
[SEG_PREFIX
]);
4850 if (flag_code
== CODE_16BIT
)
4853 if (i
.prefix
[DATA_PREFIX
] != 0)
4855 FRAG_APPEND_1_CHAR (DATA_PREFIX_OPCODE
);
4865 if (i
.prefix
[REX_PREFIX
] != 0)
4867 FRAG_APPEND_1_CHAR (i
.prefix
[REX_PREFIX
]);
4871 if (i
.prefixes
!= 0 && !intel_syntax
)
4872 as_warn (_("skipping prefixes on this instruction"));
4874 p
= frag_more (1 + size
);
4875 *p
++ = i
.tm
.base_opcode
;
4877 fixP
= fix_new_exp (frag_now
, p
- frag_now
->fr_literal
, size
,
4878 i
.op
[0].disps
, 1, reloc (size
, 1, 1, i
.reloc
[0]));
4880 /* All jumps handled here are signed, but don't use a signed limit
4881 check for 32 and 16 bit jumps as we want to allow wrap around at
4882 4G and 64k respectively. */
4884 fixP
->fx_signed
= 1;
4888 output_interseg_jump (void)
4896 if (flag_code
== CODE_16BIT
)
4900 if (i
.prefix
[DATA_PREFIX
] != 0)
4906 if (i
.prefix
[REX_PREFIX
] != 0)
4916 if (i
.prefixes
!= 0 && !intel_syntax
)
4917 as_warn (_("skipping prefixes on this instruction"));
4919 /* 1 opcode; 2 segment; offset */
4920 p
= frag_more (prefix
+ 1 + 2 + size
);
4922 if (i
.prefix
[DATA_PREFIX
] != 0)
4923 *p
++ = DATA_PREFIX_OPCODE
;
4925 if (i
.prefix
[REX_PREFIX
] != 0)
4926 *p
++ = i
.prefix
[REX_PREFIX
];
4928 *p
++ = i
.tm
.base_opcode
;
4929 if (i
.op
[1].imms
->X_op
== O_constant
)
4931 offsetT n
= i
.op
[1].imms
->X_add_number
;
4934 && !fits_in_unsigned_word (n
)
4935 && !fits_in_signed_word (n
))
4937 as_bad (_("16-bit jump out of range"));
4940 md_number_to_chars (p
, n
, size
);
4943 fix_new_exp (frag_now
, p
- frag_now
->fr_literal
, size
,
4944 i
.op
[1].imms
, 0, reloc (size
, 0, 0, i
.reloc
[1]));
4945 if (i
.op
[0].imms
->X_op
!= O_constant
)
4946 as_bad (_("can't handle non absolute segment in `%s'"),
4948 md_number_to_chars (p
+ size
, (valueT
) i
.op
[0].imms
->X_add_number
, 2);
4954 fragS
*insn_start_frag
;
4955 offsetT insn_start_off
;
4957 /* Tie dwarf2 debug info to the address at the start of the insn.
4958 We can't do this after the insn has been output as the current
4959 frag may have been closed off. eg. by frag_var. */
4960 dwarf2_emit_insn (0);
4962 insn_start_frag
= frag_now
;
4963 insn_start_off
= frag_now_fix ();
4966 if (i
.tm
.opcode_modifier
.jump
)
4968 else if (i
.tm
.opcode_modifier
.jumpbyte
4969 || i
.tm
.opcode_modifier
.jumpdword
)
4971 else if (i
.tm
.opcode_modifier
.jumpintersegment
)
4972 output_interseg_jump ();
4975 /* Output normal instructions here. */
4978 unsigned int prefix
;
4980 switch (i
.tm
.opcode_length
)
4983 if (i
.tm
.base_opcode
& 0xff000000)
4985 prefix
= (i
.tm
.base_opcode
>> 24) & 0xff;
4990 if ((i
.tm
.base_opcode
& 0xff0000) != 0)
4992 prefix
= (i
.tm
.base_opcode
>> 16) & 0xff;
4993 if (i
.tm
.cpu_flags
.bitfield
.cpupadlock
)
4996 if (prefix
!= REPE_PREFIX_OPCODE
4997 || i
.prefix
[LOCKREP_PREFIX
] != REPE_PREFIX_OPCODE
)
4998 add_prefix (prefix
);
5001 add_prefix (prefix
);
5010 /* The prefix bytes. */
5012 q
< i
.prefix
+ sizeof (i
.prefix
) / sizeof (i
.prefix
[0]);
5018 md_number_to_chars (p
, (valueT
) *q
, 1);
5022 /* Now the opcode; be careful about word order here! */
5023 if (i
.tm
.opcode_length
== 1)
5025 FRAG_APPEND_1_CHAR (i
.tm
.base_opcode
);
5029 switch (i
.tm
.opcode_length
)
5033 *p
++ = (i
.tm
.base_opcode
>> 16) & 0xff;
5043 /* Put out high byte first: can't use md_number_to_chars! */
5044 *p
++ = (i
.tm
.base_opcode
>> 8) & 0xff;
5045 *p
= i
.tm
.base_opcode
& 0xff;
5047 /* On SSE5, encode the OC1 bit in the DREX field if this
5048 encoding has multiple formats. */
5049 if (i
.tm
.opcode_modifier
.drex
5050 && i
.tm
.opcode_modifier
.drexv
5051 && DREX_OC1 (i
.tm
.extension_opcode
))
5052 *p
|= DREX_OC1_MASK
;
5055 /* Now the modrm byte and sib byte (if present). */
5056 if (i
.tm
.opcode_modifier
.modrm
)
5059 md_number_to_chars (p
,
5060 (valueT
) (i
.rm
.regmem
<< 0
5064 /* If i.rm.regmem == ESP (4)
5065 && i.rm.mode != (Register mode)
5067 ==> need second modrm byte. */
5068 if (i
.rm
.regmem
== ESCAPE_TO_TWO_BYTE_ADDRESSING
5070 && !(i
.base_reg
&& i
.base_reg
->reg_type
.bitfield
.reg16
))
5073 md_number_to_chars (p
,
5074 (valueT
) (i
.sib
.base
<< 0
5076 | i
.sib
.scale
<< 6),
5081 /* Write the DREX byte if needed. */
5082 if (i
.tm
.opcode_modifier
.drex
|| i
.tm
.opcode_modifier
.drexc
)
5085 *p
= (((i
.drex
.reg
& 0xf) << 4) | (i
.drex
.rex
& 0x7));
5087 /* Encode the OC0 bit if this encoding has multiple
5089 if ((i
.tm
.opcode_modifier
.drex
5090 || i
.tm
.opcode_modifier
.drexv
)
5091 && DREX_OC0 (i
.tm
.extension_opcode
))
5092 *p
|= DREX_OC0_MASK
;
5095 if (i
.disp_operands
)
5096 output_disp (insn_start_frag
, insn_start_off
);
5099 output_imm (insn_start_frag
, insn_start_off
);
5105 pi ("" /*line*/, &i
);
5107 #endif /* DEBUG386 */
5110 /* Return the size of the displacement operand N. */
5113 disp_size (unsigned int n
)
5116 if (i
.types
[n
].bitfield
.disp64
)
5118 else if (i
.types
[n
].bitfield
.disp8
)
5120 else if (i
.types
[n
].bitfield
.disp16
)
5125 /* Return the size of the immediate operand N. */
5128 imm_size (unsigned int n
)
5131 if (i
.types
[n
].bitfield
.imm64
)
5133 else if (i
.types
[n
].bitfield
.imm8
|| i
.types
[n
].bitfield
.imm8s
)
5135 else if (i
.types
[n
].bitfield
.imm16
)
5141 output_disp (fragS
*insn_start_frag
, offsetT insn_start_off
)
5146 for (n
= 0; n
< i
.operands
; n
++)
5148 if (operand_type_check (i
.types
[n
], disp
))
5150 if (i
.op
[n
].disps
->X_op
== O_constant
)
5152 int size
= disp_size (n
);
5155 val
= offset_in_range (i
.op
[n
].disps
->X_add_number
,
5157 p
= frag_more (size
);
5158 md_number_to_chars (p
, val
, size
);
5162 enum bfd_reloc_code_real reloc_type
;
5163 int size
= disp_size (n
);
5164 int sign
= i
.types
[n
].bitfield
.disp32s
;
5165 int pcrel
= (i
.flags
[n
] & Operand_PCrel
) != 0;
5167 /* We can't have 8 bit displacement here. */
5168 assert (!i
.types
[n
].bitfield
.disp8
);
5170 /* The PC relative address is computed relative
5171 to the instruction boundary, so in case immediate
5172 fields follows, we need to adjust the value. */
5173 if (pcrel
&& i
.imm_operands
)
5178 for (n1
= 0; n1
< i
.operands
; n1
++)
5179 if (operand_type_check (i
.types
[n1
], imm
))
5181 /* Only one immediate is allowed for PC
5182 relative address. */
5185 i
.op
[n
].disps
->X_add_number
-= sz
;
5187 /* We should find the immediate. */
5191 p
= frag_more (size
);
5192 reloc_type
= reloc (size
, pcrel
, sign
, i
.reloc
[n
]);
5194 && GOT_symbol
== i
.op
[n
].disps
->X_add_symbol
5195 && (((reloc_type
== BFD_RELOC_32
5196 || reloc_type
== BFD_RELOC_X86_64_32S
5197 || (reloc_type
== BFD_RELOC_64
5199 && (i
.op
[n
].disps
->X_op
== O_symbol
5200 || (i
.op
[n
].disps
->X_op
== O_add
5201 && ((symbol_get_value_expression
5202 (i
.op
[n
].disps
->X_op_symbol
)->X_op
)
5204 || reloc_type
== BFD_RELOC_32_PCREL
))
5208 if (insn_start_frag
== frag_now
)
5209 add
= (p
- frag_now
->fr_literal
) - insn_start_off
;
5214 add
= insn_start_frag
->fr_fix
- insn_start_off
;
5215 for (fr
= insn_start_frag
->fr_next
;
5216 fr
&& fr
!= frag_now
; fr
= fr
->fr_next
)
5218 add
+= p
- frag_now
->fr_literal
;
5223 reloc_type
= BFD_RELOC_386_GOTPC
;
5224 i
.op
[n
].imms
->X_add_number
+= add
;
5226 else if (reloc_type
== BFD_RELOC_64
)
5227 reloc_type
= BFD_RELOC_X86_64_GOTPC64
;
5229 /* Don't do the adjustment for x86-64, as there
5230 the pcrel addressing is relative to the _next_
5231 insn, and that is taken care of in other code. */
5232 reloc_type
= BFD_RELOC_X86_64_GOTPC32
;
5234 fix_new_exp (frag_now
, p
- frag_now
->fr_literal
, size
,
5235 i
.op
[n
].disps
, pcrel
, reloc_type
);
5242 output_imm (fragS
*insn_start_frag
, offsetT insn_start_off
)
5247 for (n
= 0; n
< i
.operands
; n
++)
5249 if (operand_type_check (i
.types
[n
], imm
))
5251 if (i
.op
[n
].imms
->X_op
== O_constant
)
5253 int size
= imm_size (n
);
5256 val
= offset_in_range (i
.op
[n
].imms
->X_add_number
,
5258 p
= frag_more (size
);
5259 md_number_to_chars (p
, val
, size
);
5263 /* Not absolute_section.
5264 Need a 32-bit fixup (don't support 8bit
5265 non-absolute imms). Try to support other
5267 enum bfd_reloc_code_real reloc_type
;
5268 int size
= imm_size (n
);
5271 if (i
.types
[n
].bitfield
.imm32s
5272 && (i
.suffix
== QWORD_MNEM_SUFFIX
5273 || (!i
.suffix
&& i
.tm
.opcode_modifier
.no_lsuf
)))
5278 p
= frag_more (size
);
5279 reloc_type
= reloc (size
, 0, sign
, i
.reloc
[n
]);
5281 /* This is tough to explain. We end up with this one if we
5282 * have operands that look like
5283 * "_GLOBAL_OFFSET_TABLE_+[.-.L284]". The goal here is to
5284 * obtain the absolute address of the GOT, and it is strongly
5285 * preferable from a performance point of view to avoid using
5286 * a runtime relocation for this. The actual sequence of
5287 * instructions often look something like:
5292 * addl $_GLOBAL_OFFSET_TABLE_+[.-.L66],%ebx
5294 * The call and pop essentially return the absolute address
5295 * of the label .L66 and store it in %ebx. The linker itself
5296 * will ultimately change the first operand of the addl so
5297 * that %ebx points to the GOT, but to keep things simple, the
5298 * .o file must have this operand set so that it generates not
5299 * the absolute address of .L66, but the absolute address of
5300 * itself. This allows the linker itself simply treat a GOTPC
5301 * relocation as asking for a pcrel offset to the GOT to be
5302 * added in, and the addend of the relocation is stored in the
5303 * operand field for the instruction itself.
5305 * Our job here is to fix the operand so that it would add
5306 * the correct offset so that %ebx would point to itself. The
5307 * thing that is tricky is that .-.L66 will point to the
5308 * beginning of the instruction, so we need to further modify
5309 * the operand so that it will point to itself. There are
5310 * other cases where you have something like:
5312 * .long $_GLOBAL_OFFSET_TABLE_+[.-.L66]
5314 * and here no correction would be required. Internally in
5315 * the assembler we treat operands of this form as not being
5316 * pcrel since the '.' is explicitly mentioned, and I wonder
5317 * whether it would simplify matters to do it this way. Who
5318 * knows. In earlier versions of the PIC patches, the
5319 * pcrel_adjust field was used to store the correction, but
5320 * since the expression is not pcrel, I felt it would be
5321 * confusing to do it this way. */
5323 if ((reloc_type
== BFD_RELOC_32
5324 || reloc_type
== BFD_RELOC_X86_64_32S
5325 || reloc_type
== BFD_RELOC_64
)
5327 && GOT_symbol
== i
.op
[n
].imms
->X_add_symbol
5328 && (i
.op
[n
].imms
->X_op
== O_symbol
5329 || (i
.op
[n
].imms
->X_op
== O_add
5330 && ((symbol_get_value_expression
5331 (i
.op
[n
].imms
->X_op_symbol
)->X_op
)
5336 if (insn_start_frag
== frag_now
)
5337 add
= (p
- frag_now
->fr_literal
) - insn_start_off
;
5342 add
= insn_start_frag
->fr_fix
- insn_start_off
;
5343 for (fr
= insn_start_frag
->fr_next
;
5344 fr
&& fr
!= frag_now
; fr
= fr
->fr_next
)
5346 add
+= p
- frag_now
->fr_literal
;
5350 reloc_type
= BFD_RELOC_386_GOTPC
;
5352 reloc_type
= BFD_RELOC_X86_64_GOTPC32
;
5354 reloc_type
= BFD_RELOC_X86_64_GOTPC64
;
5355 i
.op
[n
].imms
->X_add_number
+= add
;
5357 fix_new_exp (frag_now
, p
- frag_now
->fr_literal
, size
,
5358 i
.op
[n
].imms
, 0, reloc_type
);
5364 /* x86_cons_fix_new is called via the expression parsing code when a
5365 reloc is needed. We use this hook to get the correct .got reloc. */
5366 static enum bfd_reloc_code_real got_reloc
= NO_RELOC
;
5367 static int cons_sign
= -1;
5370 x86_cons_fix_new (fragS
*frag
, unsigned int off
, unsigned int len
,
5373 enum bfd_reloc_code_real r
= reloc (len
, 0, cons_sign
, got_reloc
);
5375 got_reloc
= NO_RELOC
;
5378 if (exp
->X_op
== O_secrel
)
5380 exp
->X_op
= O_symbol
;
5381 r
= BFD_RELOC_32_SECREL
;
5385 fix_new_exp (frag
, off
, len
, exp
, 0, r
);
5388 #if (!defined (OBJ_ELF) && !defined (OBJ_MAYBE_ELF)) || defined (LEX_AT)
5389 # define lex_got(reloc, adjust, types) NULL
5391 /* Parse operands of the form
5392 <symbol>@GOTOFF+<nnn>
5393 and similar .plt or .got references.
5395 If we find one, set up the correct relocation in RELOC and copy the
5396 input string, minus the `@GOTOFF' into a malloc'd buffer for
5397 parsing by the calling routine. Return this buffer, and if ADJUST
5398 is non-null set it to the length of the string we removed from the
5399 input line. Otherwise return NULL. */
5401 lex_got (enum bfd_reloc_code_real
*reloc
,
5403 i386_operand_type
*types
)
5405 /* Some of the relocations depend on the size of what field is to
5406 be relocated. But in our callers i386_immediate and i386_displacement
5407 we don't yet know the operand size (this will be set by insn
5408 matching). Hence we record the word32 relocation here,
5409 and adjust the reloc according to the real size in reloc(). */
5410 static const struct {
5412 const enum bfd_reloc_code_real rel
[2];
5413 const i386_operand_type types64
;
5416 BFD_RELOC_X86_64_PLTOFF64
},
5417 OPERAND_TYPE_IMM64
},
5418 { "PLT", { BFD_RELOC_386_PLT32
,
5419 BFD_RELOC_X86_64_PLT32
},
5420 OPERAND_TYPE_IMM32_32S_DISP32
},
5422 BFD_RELOC_X86_64_GOTPLT64
},
5423 OPERAND_TYPE_IMM64_DISP64
},
5424 { "GOTOFF", { BFD_RELOC_386_GOTOFF
,
5425 BFD_RELOC_X86_64_GOTOFF64
},
5426 OPERAND_TYPE_IMM64_DISP64
},
5428 BFD_RELOC_X86_64_GOTPCREL
},
5429 OPERAND_TYPE_IMM32_32S_DISP32
},
5430 { "TLSGD", { BFD_RELOC_386_TLS_GD
,
5431 BFD_RELOC_X86_64_TLSGD
},
5432 OPERAND_TYPE_IMM32_32S_DISP32
},
5433 { "TLSLDM", { BFD_RELOC_386_TLS_LDM
,
5435 OPERAND_TYPE_NONE
},
5437 BFD_RELOC_X86_64_TLSLD
},
5438 OPERAND_TYPE_IMM32_32S_DISP32
},
5439 { "GOTTPOFF", { BFD_RELOC_386_TLS_IE_32
,
5440 BFD_RELOC_X86_64_GOTTPOFF
},
5441 OPERAND_TYPE_IMM32_32S_DISP32
},
5442 { "TPOFF", { BFD_RELOC_386_TLS_LE_32
,
5443 BFD_RELOC_X86_64_TPOFF32
},
5444 OPERAND_TYPE_IMM32_32S_64_DISP32_64
},
5445 { "NTPOFF", { BFD_RELOC_386_TLS_LE
,
5447 OPERAND_TYPE_NONE
},
5448 { "DTPOFF", { BFD_RELOC_386_TLS_LDO_32
,
5449 BFD_RELOC_X86_64_DTPOFF32
},
5451 OPERAND_TYPE_IMM32_32S_64_DISP32_64
},
5452 { "GOTNTPOFF",{ BFD_RELOC_386_TLS_GOTIE
,
5454 OPERAND_TYPE_NONE
},
5455 { "INDNTPOFF",{ BFD_RELOC_386_TLS_IE
,
5457 OPERAND_TYPE_NONE
},
5458 { "GOT", { BFD_RELOC_386_GOT32
,
5459 BFD_RELOC_X86_64_GOT32
},
5460 OPERAND_TYPE_IMM32_32S_64_DISP32
},
5461 { "TLSDESC", { BFD_RELOC_386_TLS_GOTDESC
,
5462 BFD_RELOC_X86_64_GOTPC32_TLSDESC
},
5463 OPERAND_TYPE_IMM32_32S_DISP32
},
5464 { "TLSCALL", { BFD_RELOC_386_TLS_DESC_CALL
,
5465 BFD_RELOC_X86_64_TLSDESC_CALL
},
5466 OPERAND_TYPE_IMM32_32S_DISP32
},
5474 for (cp
= input_line_pointer
; *cp
!= '@'; cp
++)
5475 if (is_end_of_line
[(unsigned char) *cp
] || *cp
== ',')
5478 for (j
= 0; j
< sizeof (gotrel
) / sizeof (gotrel
[0]); j
++)
5482 len
= strlen (gotrel
[j
].str
);
5483 if (strncasecmp (cp
+ 1, gotrel
[j
].str
, len
) == 0)
5485 if (gotrel
[j
].rel
[object_64bit
] != 0)
5488 char *tmpbuf
, *past_reloc
;
5490 *reloc
= gotrel
[j
].rel
[object_64bit
];
5496 if (flag_code
!= CODE_64BIT
)
5498 types
->bitfield
.imm32
= 1;
5499 types
->bitfield
.disp32
= 1;
5502 *types
= gotrel
[j
].types64
;
5505 if (GOT_symbol
== NULL
)
5506 GOT_symbol
= symbol_find_or_make (GLOBAL_OFFSET_TABLE_NAME
);
5508 /* The length of the first part of our input line. */
5509 first
= cp
- input_line_pointer
;
5511 /* The second part goes from after the reloc token until
5512 (and including) an end_of_line char or comma. */
5513 past_reloc
= cp
+ 1 + len
;
5515 while (!is_end_of_line
[(unsigned char) *cp
] && *cp
!= ',')
5517 second
= cp
+ 1 - past_reloc
;
5519 /* Allocate and copy string. The trailing NUL shouldn't
5520 be necessary, but be safe. */
5521 tmpbuf
= xmalloc (first
+ second
+ 2);
5522 memcpy (tmpbuf
, input_line_pointer
, first
);
5523 if (second
!= 0 && *past_reloc
!= ' ')
5524 /* Replace the relocation token with ' ', so that
5525 errors like foo@GOTOFF1 will be detected. */
5526 tmpbuf
[first
++] = ' ';
5527 memcpy (tmpbuf
+ first
, past_reloc
, second
);
5528 tmpbuf
[first
+ second
] = '\0';
5532 as_bad (_("@%s reloc is not supported with %d-bit output format"),
5533 gotrel
[j
].str
, 1 << (5 + object_64bit
));
5538 /* Might be a symbol version string. Don't as_bad here. */
5543 x86_cons (expressionS
*exp
, int size
)
5545 if (size
== 4 || (object_64bit
&& size
== 8))
5547 /* Handle @GOTOFF and the like in an expression. */
5549 char *gotfree_input_line
;
5552 save
= input_line_pointer
;
5553 gotfree_input_line
= lex_got (&got_reloc
, &adjust
, NULL
);
5554 if (gotfree_input_line
)
5555 input_line_pointer
= gotfree_input_line
;
5559 if (gotfree_input_line
)
5561 /* expression () has merrily parsed up to the end of line,
5562 or a comma - in the wrong buffer. Transfer how far
5563 input_line_pointer has moved to the right buffer. */
5564 input_line_pointer
= (save
5565 + (input_line_pointer
- gotfree_input_line
)
5567 free (gotfree_input_line
);
5568 if (exp
->X_op
== O_constant
5569 || exp
->X_op
== O_absent
5570 || exp
->X_op
== O_illegal
5571 || exp
->X_op
== O_register
5572 || exp
->X_op
== O_big
)
5574 char c
= *input_line_pointer
;
5575 *input_line_pointer
= 0;
5576 as_bad (_("missing or invalid expression `%s'"), save
);
5577 *input_line_pointer
= c
;
5586 static void signed_cons (int size
)
5588 if (flag_code
== CODE_64BIT
)
5596 pe_directive_secrel (dummy
)
5597 int dummy ATTRIBUTE_UNUSED
;
5604 if (exp
.X_op
== O_symbol
)
5605 exp
.X_op
= O_secrel
;
5607 emit_expr (&exp
, 4);
5609 while (*input_line_pointer
++ == ',');
5611 input_line_pointer
--;
5612 demand_empty_rest_of_line ();
5617 i386_immediate (char *imm_start
)
5619 char *save_input_line_pointer
;
5620 char *gotfree_input_line
;
5623 i386_operand_type types
;
5625 UINTS_SET (types
, ~0);
5627 if (i
.imm_operands
== MAX_IMMEDIATE_OPERANDS
)
5629 as_bad (_("at most %d immediate operands are allowed"),
5630 MAX_IMMEDIATE_OPERANDS
);
5634 exp
= &im_expressions
[i
.imm_operands
++];
5635 i
.op
[this_operand
].imms
= exp
;
5637 if (is_space_char (*imm_start
))
5640 save_input_line_pointer
= input_line_pointer
;
5641 input_line_pointer
= imm_start
;
5643 gotfree_input_line
= lex_got (&i
.reloc
[this_operand
], NULL
, &types
);
5644 if (gotfree_input_line
)
5645 input_line_pointer
= gotfree_input_line
;
5647 exp_seg
= expression (exp
);
5650 if (*input_line_pointer
)
5651 as_bad (_("junk `%s' after expression"), input_line_pointer
);
5653 input_line_pointer
= save_input_line_pointer
;
5654 if (gotfree_input_line
)
5655 free (gotfree_input_line
);
5657 if (exp
->X_op
== O_absent
5658 || exp
->X_op
== O_illegal
5659 || exp
->X_op
== O_big
5660 || (gotfree_input_line
5661 && (exp
->X_op
== O_constant
5662 || exp
->X_op
== O_register
)))
5664 as_bad (_("missing or invalid immediate expression `%s'"),
5668 else if (exp
->X_op
== O_constant
)
5670 /* Size it properly later. */
5671 i
.types
[this_operand
].bitfield
.imm64
= 1;
5672 /* If BFD64, sign extend val. */
5673 if (!use_rela_relocations
5674 && (exp
->X_add_number
& ~(((addressT
) 2 << 31) - 1)) == 0)
5676 = (exp
->X_add_number
^ ((addressT
) 1 << 31)) - ((addressT
) 1 << 31);
5678 #if (defined (OBJ_AOUT) || defined (OBJ_MAYBE_AOUT))
5679 else if (OUTPUT_FLAVOR
== bfd_target_aout_flavour
5680 && exp_seg
!= absolute_section
5681 && exp_seg
!= text_section
5682 && exp_seg
!= data_section
5683 && exp_seg
!= bss_section
5684 && exp_seg
!= undefined_section
5685 && !bfd_is_com_section (exp_seg
))
5687 as_bad (_("unimplemented segment %s in operand"), exp_seg
->name
);
5691 else if (!intel_syntax
&& exp
->X_op
== O_register
)
5693 as_bad (_("illegal immediate register operand %s"), imm_start
);
5698 /* This is an address. The size of the address will be
5699 determined later, depending on destination register,
5700 suffix, or the default for the section. */
5701 i
.types
[this_operand
].bitfield
.imm8
= 1;
5702 i
.types
[this_operand
].bitfield
.imm16
= 1;
5703 i
.types
[this_operand
].bitfield
.imm32
= 1;
5704 i
.types
[this_operand
].bitfield
.imm32s
= 1;
5705 i
.types
[this_operand
].bitfield
.imm64
= 1;
5706 i
.types
[this_operand
] = operand_type_and (i
.types
[this_operand
],
5714 i386_scale (char *scale
)
5717 char *save
= input_line_pointer
;
5719 input_line_pointer
= scale
;
5720 val
= get_absolute_expression ();
5725 i
.log2_scale_factor
= 0;
5728 i
.log2_scale_factor
= 1;
5731 i
.log2_scale_factor
= 2;
5734 i
.log2_scale_factor
= 3;
5738 char sep
= *input_line_pointer
;
5740 *input_line_pointer
= '\0';
5741 as_bad (_("expecting scale factor of 1, 2, 4, or 8: got `%s'"),
5743 *input_line_pointer
= sep
;
5744 input_line_pointer
= save
;
5748 if (i
.log2_scale_factor
!= 0 && i
.index_reg
== 0)
5750 as_warn (_("scale factor of %d without an index register"),
5751 1 << i
.log2_scale_factor
);
5752 i
.log2_scale_factor
= 0;
5754 scale
= input_line_pointer
;
5755 input_line_pointer
= save
;
5760 i386_displacement (char *disp_start
, char *disp_end
)
5764 char *save_input_line_pointer
;
5765 char *gotfree_input_line
;
5767 i386_operand_type bigdisp
, types
= anydisp
;
5770 if (i
.disp_operands
== MAX_MEMORY_OPERANDS
)
5772 as_bad (_("at most %d displacement operands are allowed"),
5773 MAX_MEMORY_OPERANDS
);
5777 UINTS_CLEAR (bigdisp
);
5778 if ((i
.types
[this_operand
].bitfield
.jumpabsolute
)
5779 || (!current_templates
->start
->opcode_modifier
.jump
5780 && !current_templates
->start
->opcode_modifier
.jumpdword
))
5782 bigdisp
.bitfield
.disp32
= 1;
5783 override
= (i
.prefix
[ADDR_PREFIX
] != 0);
5784 if (flag_code
== CODE_64BIT
)
5788 bigdisp
.bitfield
.disp32s
= 1;
5789 bigdisp
.bitfield
.disp64
= 1;
5792 else if ((flag_code
== CODE_16BIT
) ^ override
)
5794 bigdisp
.bitfield
.disp32
= 0;
5795 bigdisp
.bitfield
.disp16
= 1;
5800 /* For PC-relative branches, the width of the displacement
5801 is dependent upon data size, not address size. */
5802 override
= (i
.prefix
[DATA_PREFIX
] != 0);
5803 if (flag_code
== CODE_64BIT
)
5805 if (override
|| i
.suffix
== WORD_MNEM_SUFFIX
)
5806 bigdisp
.bitfield
.disp16
= 1;
5809 bigdisp
.bitfield
.disp32
= 1;
5810 bigdisp
.bitfield
.disp32s
= 1;
5816 override
= (i
.suffix
== (flag_code
!= CODE_16BIT
5818 : LONG_MNEM_SUFFIX
));
5819 bigdisp
.bitfield
.disp32
= 1;
5820 if ((flag_code
== CODE_16BIT
) ^ override
)
5822 bigdisp
.bitfield
.disp32
= 0;
5823 bigdisp
.bitfield
.disp16
= 1;
5827 i
.types
[this_operand
] = operand_type_or (i
.types
[this_operand
],
5830 exp
= &disp_expressions
[i
.disp_operands
];
5831 i
.op
[this_operand
].disps
= exp
;
5833 save_input_line_pointer
= input_line_pointer
;
5834 input_line_pointer
= disp_start
;
5835 END_STRING_AND_SAVE (disp_end
);
5837 #ifndef GCC_ASM_O_HACK
5838 #define GCC_ASM_O_HACK 0
5841 END_STRING_AND_SAVE (disp_end
+ 1);
5842 if (i
.types
[this_operand
].bitfield
.baseIndex
5843 && displacement_string_end
[-1] == '+')
5845 /* This hack is to avoid a warning when using the "o"
5846 constraint within gcc asm statements.
5849 #define _set_tssldt_desc(n,addr,limit,type) \
5850 __asm__ __volatile__ ( \
5852 "movw %w1,2+%0\n\t" \
5854 "movb %b1,4+%0\n\t" \
5855 "movb %4,5+%0\n\t" \
5856 "movb $0,6+%0\n\t" \
5857 "movb %h1,7+%0\n\t" \
5859 : "=o"(*(n)) : "q" (addr), "ri"(limit), "i"(type))
5861 This works great except that the output assembler ends
5862 up looking a bit weird if it turns out that there is
5863 no offset. You end up producing code that looks like:
5876 So here we provide the missing zero. */
5878 *displacement_string_end
= '0';
5881 gotfree_input_line
= lex_got (&i
.reloc
[this_operand
], NULL
, &types
);
5882 if (gotfree_input_line
)
5883 input_line_pointer
= gotfree_input_line
;
5885 exp_seg
= expression (exp
);
5888 if (*input_line_pointer
)
5889 as_bad (_("junk `%s' after expression"), input_line_pointer
);
5891 RESTORE_END_STRING (disp_end
+ 1);
5893 input_line_pointer
= save_input_line_pointer
;
5894 if (gotfree_input_line
)
5895 free (gotfree_input_line
);
5898 /* We do this to make sure that the section symbol is in
5899 the symbol table. We will ultimately change the relocation
5900 to be relative to the beginning of the section. */
5901 if (i
.reloc
[this_operand
] == BFD_RELOC_386_GOTOFF
5902 || i
.reloc
[this_operand
] == BFD_RELOC_X86_64_GOTPCREL
5903 || i
.reloc
[this_operand
] == BFD_RELOC_X86_64_GOTOFF64
)
5905 if (exp
->X_op
!= O_symbol
)
5908 if (S_IS_LOCAL (exp
->X_add_symbol
)
5909 && S_GET_SEGMENT (exp
->X_add_symbol
) != undefined_section
)
5910 section_symbol (S_GET_SEGMENT (exp
->X_add_symbol
));
5911 exp
->X_op
= O_subtract
;
5912 exp
->X_op_symbol
= GOT_symbol
;
5913 if (i
.reloc
[this_operand
] == BFD_RELOC_X86_64_GOTPCREL
)
5914 i
.reloc
[this_operand
] = BFD_RELOC_32_PCREL
;
5915 else if (i
.reloc
[this_operand
] == BFD_RELOC_X86_64_GOTOFF64
)
5916 i
.reloc
[this_operand
] = BFD_RELOC_64
;
5918 i
.reloc
[this_operand
] = BFD_RELOC_32
;
5921 else if (exp
->X_op
== O_absent
5922 || exp
->X_op
== O_illegal
5923 || exp
->X_op
== O_big
5924 || (gotfree_input_line
5925 && (exp
->X_op
== O_constant
5926 || exp
->X_op
== O_register
)))
5929 as_bad (_("missing or invalid displacement expression `%s'"),
5934 #if (defined (OBJ_AOUT) || defined (OBJ_MAYBE_AOUT))
5935 else if (exp
->X_op
!= O_constant
5936 && OUTPUT_FLAVOR
== bfd_target_aout_flavour
5937 && exp_seg
!= absolute_section
5938 && exp_seg
!= text_section
5939 && exp_seg
!= data_section
5940 && exp_seg
!= bss_section
5941 && exp_seg
!= undefined_section
5942 && !bfd_is_com_section (exp_seg
))
5944 as_bad (_("unimplemented segment %s in operand"), exp_seg
->name
);
5949 RESTORE_END_STRING (disp_end
);
5951 /* Check if this is a displacement only operand. */
5952 bigdisp
= i
.types
[this_operand
];
5953 bigdisp
.bitfield
.disp8
= 0;
5954 bigdisp
.bitfield
.disp16
= 0;
5955 bigdisp
.bitfield
.disp32
= 0;
5956 bigdisp
.bitfield
.disp32s
= 0;
5957 bigdisp
.bitfield
.disp64
= 0;
5958 if (UINTS_ALL_ZERO (bigdisp
))
5959 i
.types
[this_operand
] = operand_type_and (i
.types
[this_operand
],
5965 /* Make sure the memory operand we've been dealt is valid.
5966 Return 1 on success, 0 on a failure. */
5969 i386_index_check (const char *operand_string
)
5972 #if INFER_ADDR_PREFIX
5978 if (flag_code
== CODE_64BIT
)
5981 && ((i
.prefix
[ADDR_PREFIX
] == 0
5982 && !i
.base_reg
->reg_type
.bitfield
.reg64
)
5983 || (i
.prefix
[ADDR_PREFIX
]
5984 && !i
.base_reg
->reg_type
.bitfield
.reg32
))
5986 || i
.base_reg
->reg_num
!= RegRip
))
5988 && (!i
.index_reg
->reg_type
.bitfield
.baseindex
5989 || (i
.prefix
[ADDR_PREFIX
] == 0
5990 && i
.index_reg
->reg_num
!= RegRiz
5991 && !i
.index_reg
->reg_type
.bitfield
.reg64
5993 || (i
.prefix
[ADDR_PREFIX
]
5994 && i
.index_reg
->reg_num
!= RegEiz
5995 && !i
.index_reg
->reg_type
.bitfield
.reg32
))))
6000 if ((flag_code
== CODE_16BIT
) ^ (i
.prefix
[ADDR_PREFIX
] != 0))
6004 && (!i
.base_reg
->reg_type
.bitfield
.reg16
6005 || !i
.base_reg
->reg_type
.bitfield
.baseindex
))
6007 && (!i
.index_reg
->reg_type
.bitfield
.reg16
6008 || !i
.index_reg
->reg_type
.bitfield
.baseindex
6010 && i
.base_reg
->reg_num
< 6
6011 && i
.index_reg
->reg_num
>= 6
6012 && i
.log2_scale_factor
== 0))))
6019 && !i
.base_reg
->reg_type
.bitfield
.reg32
)
6021 && ((!i
.index_reg
->reg_type
.bitfield
.reg32
6022 && i
.index_reg
->reg_num
!= RegEiz
)
6023 || !i
.index_reg
->reg_type
.bitfield
.baseindex
)))
6029 #if INFER_ADDR_PREFIX
6030 if (i
.prefix
[ADDR_PREFIX
] == 0)
6032 i
.prefix
[ADDR_PREFIX
] = ADDR_PREFIX_OPCODE
;
6034 /* Change the size of any displacement too. At most one of
6035 Disp16 or Disp32 is set.
6036 FIXME. There doesn't seem to be any real need for separate
6037 Disp16 and Disp32 flags. The same goes for Imm16 and Imm32.
6038 Removing them would probably clean up the code quite a lot. */
6039 if (flag_code
!= CODE_64BIT
6040 && (i
.types
[this_operand
].bitfield
.disp16
6041 || i
.types
[this_operand
].bitfield
.disp32
))
6042 i
.types
[this_operand
]
6043 = operand_type_xor (i
.types
[this_operand
], disp16_32
);
6048 as_bad (_("`%s' is not a valid base/index expression"),
6052 as_bad (_("`%s' is not a valid %s bit base/index expression"),
6054 flag_code_names
[flag_code
]);
6059 /* Parse OPERAND_STRING into the i386_insn structure I. Returns non-zero
6063 i386_operand (char *operand_string
)
6067 char *op_string
= operand_string
;
6069 if (is_space_char (*op_string
))
6072 /* We check for an absolute prefix (differentiating,
6073 for example, 'jmp pc_relative_label' from 'jmp *absolute_label'. */
6074 if (*op_string
== ABSOLUTE_PREFIX
)
6077 if (is_space_char (*op_string
))
6079 i
.types
[this_operand
].bitfield
.jumpabsolute
= 1;
6082 /* Check if operand is a register. */
6083 if ((r
= parse_register (op_string
, &end_op
)) != NULL
)
6085 i386_operand_type temp
;
6087 /* Check for a segment override by searching for ':' after a
6088 segment register. */
6090 if (is_space_char (*op_string
))
6092 if (*op_string
== ':'
6093 && (r
->reg_type
.bitfield
.sreg2
6094 || r
->reg_type
.bitfield
.sreg3
))
6099 i
.seg
[i
.mem_operands
] = &es
;
6102 i
.seg
[i
.mem_operands
] = &cs
;
6105 i
.seg
[i
.mem_operands
] = &ss
;
6108 i
.seg
[i
.mem_operands
] = &ds
;
6111 i
.seg
[i
.mem_operands
] = &fs
;
6114 i
.seg
[i
.mem_operands
] = &gs
;
6118 /* Skip the ':' and whitespace. */
6120 if (is_space_char (*op_string
))
6123 if (!is_digit_char (*op_string
)
6124 && !is_identifier_char (*op_string
)
6125 && *op_string
!= '('
6126 && *op_string
!= ABSOLUTE_PREFIX
)
6128 as_bad (_("bad memory operand `%s'"), op_string
);
6131 /* Handle case of %es:*foo. */
6132 if (*op_string
== ABSOLUTE_PREFIX
)
6135 if (is_space_char (*op_string
))
6137 i
.types
[this_operand
].bitfield
.jumpabsolute
= 1;
6139 goto do_memory_reference
;
6143 as_bad (_("junk `%s' after register"), op_string
);
6147 temp
.bitfield
.baseindex
= 0;
6148 i
.types
[this_operand
] = operand_type_or (i
.types
[this_operand
],
6150 i
.op
[this_operand
].regs
= r
;
6153 else if (*op_string
== REGISTER_PREFIX
)
6155 as_bad (_("bad register name `%s'"), op_string
);
6158 else if (*op_string
== IMMEDIATE_PREFIX
)
6161 if (i
.types
[this_operand
].bitfield
.jumpabsolute
)
6163 as_bad (_("immediate operand illegal with absolute jump"));
6166 if (!i386_immediate (op_string
))
6169 else if (is_digit_char (*op_string
)
6170 || is_identifier_char (*op_string
)
6171 || *op_string
== '(')
6173 /* This is a memory reference of some sort. */
6176 /* Start and end of displacement string expression (if found). */
6177 char *displacement_string_start
;
6178 char *displacement_string_end
;
6180 do_memory_reference
:
6181 if ((i
.mem_operands
== 1
6182 && !current_templates
->start
->opcode_modifier
.isstring
)
6183 || i
.mem_operands
== 2)
6185 as_bad (_("too many memory references for `%s'"),
6186 current_templates
->start
->name
);
6190 /* Check for base index form. We detect the base index form by
6191 looking for an ')' at the end of the operand, searching
6192 for the '(' matching it, and finding a REGISTER_PREFIX or ','
6194 base_string
= op_string
+ strlen (op_string
);
6197 if (is_space_char (*base_string
))
6200 /* If we only have a displacement, set-up for it to be parsed later. */
6201 displacement_string_start
= op_string
;
6202 displacement_string_end
= base_string
+ 1;
6204 if (*base_string
== ')')
6207 unsigned int parens_balanced
= 1;
6208 /* We've already checked that the number of left & right ()'s are
6209 equal, so this loop will not be infinite. */
6213 if (*base_string
== ')')
6215 if (*base_string
== '(')
6218 while (parens_balanced
);
6220 temp_string
= base_string
;
6222 /* Skip past '(' and whitespace. */
6224 if (is_space_char (*base_string
))
6227 if (*base_string
== ','
6228 || ((i
.base_reg
= parse_register (base_string
, &end_op
))
6231 displacement_string_end
= temp_string
;
6233 i
.types
[this_operand
].bitfield
.baseindex
= 1;
6237 base_string
= end_op
;
6238 if (is_space_char (*base_string
))
6242 /* There may be an index reg or scale factor here. */
6243 if (*base_string
== ',')
6246 if (is_space_char (*base_string
))
6249 if ((i
.index_reg
= parse_register (base_string
, &end_op
))
6252 base_string
= end_op
;
6253 if (is_space_char (*base_string
))
6255 if (*base_string
== ',')
6258 if (is_space_char (*base_string
))
6261 else if (*base_string
!= ')')
6263 as_bad (_("expecting `,' or `)' "
6264 "after index register in `%s'"),
6269 else if (*base_string
== REGISTER_PREFIX
)
6271 as_bad (_("bad register name `%s'"), base_string
);
6275 /* Check for scale factor. */
6276 if (*base_string
!= ')')
6278 char *end_scale
= i386_scale (base_string
);
6283 base_string
= end_scale
;
6284 if (is_space_char (*base_string
))
6286 if (*base_string
!= ')')
6288 as_bad (_("expecting `)' "
6289 "after scale factor in `%s'"),
6294 else if (!i
.index_reg
)
6296 as_bad (_("expecting index register or scale factor "
6297 "after `,'; got '%c'"),
6302 else if (*base_string
!= ')')
6304 as_bad (_("expecting `,' or `)' "
6305 "after base register in `%s'"),
6310 else if (*base_string
== REGISTER_PREFIX
)
6312 as_bad (_("bad register name `%s'"), base_string
);
6317 /* If there's an expression beginning the operand, parse it,
6318 assuming displacement_string_start and
6319 displacement_string_end are meaningful. */
6320 if (displacement_string_start
!= displacement_string_end
)
6322 if (!i386_displacement (displacement_string_start
,
6323 displacement_string_end
))
6327 /* Special case for (%dx) while doing input/output op. */
6329 && UINTS_EQUAL (i
.base_reg
->reg_type
, reg16_inoutportreg
)
6331 && i
.log2_scale_factor
== 0
6332 && i
.seg
[i
.mem_operands
] == 0
6333 && !operand_type_check (i
.types
[this_operand
], disp
))
6335 UINTS_CLEAR (i
.types
[this_operand
]);
6336 i
.types
[this_operand
].bitfield
.inoutportreg
= 1;
6340 if (i386_index_check (operand_string
) == 0)
6346 /* It's not a memory operand; argh! */
6347 as_bad (_("invalid char %s beginning operand %d `%s'"),
6348 output_invalid (*op_string
),
6353 return 1; /* Normal return. */
6356 /* md_estimate_size_before_relax()
6358 Called just before relax() for rs_machine_dependent frags. The x86
6359 assembler uses these frags to handle variable size jump
6362 Any symbol that is now undefined will not become defined.
6363 Return the correct fr_subtype in the frag.
6364 Return the initial "guess for variable size of frag" to caller.
6365 The guess is actually the growth beyond the fixed part. Whatever
6366 we do to grow the fixed or variable part contributes to our
6370 md_estimate_size_before_relax (fragP
, segment
)
6374 /* We've already got fragP->fr_subtype right; all we have to do is
6375 check for un-relaxable symbols. On an ELF system, we can't relax
6376 an externally visible symbol, because it may be overridden by a
6378 if (S_GET_SEGMENT (fragP
->fr_symbol
) != segment
6379 #if defined (OBJ_ELF) || defined (OBJ_MAYBE_ELF)
6381 && (S_IS_EXTERNAL (fragP
->fr_symbol
)
6382 || S_IS_WEAK (fragP
->fr_symbol
)))
6386 /* Symbol is undefined in this segment, or we need to keep a
6387 reloc so that weak symbols can be overridden. */
6388 int size
= (fragP
->fr_subtype
& CODE16
) ? 2 : 4;
6389 enum bfd_reloc_code_real reloc_type
;
6390 unsigned char *opcode
;
6393 if (fragP
->fr_var
!= NO_RELOC
)
6394 reloc_type
= fragP
->fr_var
;
6396 reloc_type
= BFD_RELOC_16_PCREL
;
6398 reloc_type
= BFD_RELOC_32_PCREL
;
6400 old_fr_fix
= fragP
->fr_fix
;
6401 opcode
= (unsigned char *) fragP
->fr_opcode
;
6403 switch (TYPE_FROM_RELAX_STATE (fragP
->fr_subtype
))
6406 /* Make jmp (0xeb) a (d)word displacement jump. */
6408 fragP
->fr_fix
+= size
;
6409 fix_new (fragP
, old_fr_fix
, size
,
6411 fragP
->fr_offset
, 1,
6417 && (!no_cond_jump_promotion
|| fragP
->fr_var
!= NO_RELOC
))
6419 /* Negate the condition, and branch past an
6420 unconditional jump. */
6423 /* Insert an unconditional jump. */
6425 /* We added two extra opcode bytes, and have a two byte
6427 fragP
->fr_fix
+= 2 + 2;
6428 fix_new (fragP
, old_fr_fix
+ 2, 2,
6430 fragP
->fr_offset
, 1,
6437 if (no_cond_jump_promotion
&& fragP
->fr_var
== NO_RELOC
)
6442 fixP
= fix_new (fragP
, old_fr_fix
, 1,
6444 fragP
->fr_offset
, 1,
6446 fixP
->fx_signed
= 1;
6450 /* This changes the byte-displacement jump 0x7N
6451 to the (d)word-displacement jump 0x0f,0x8N. */
6452 opcode
[1] = opcode
[0] + 0x10;
6453 opcode
[0] = TWO_BYTE_OPCODE_ESCAPE
;
6454 /* We've added an opcode byte. */
6455 fragP
->fr_fix
+= 1 + size
;
6456 fix_new (fragP
, old_fr_fix
+ 1, size
,
6458 fragP
->fr_offset
, 1,
6463 BAD_CASE (fragP
->fr_subtype
);
6467 return fragP
->fr_fix
- old_fr_fix
;
6470 /* Guess size depending on current relax state. Initially the relax
6471 state will correspond to a short jump and we return 1, because
6472 the variable part of the frag (the branch offset) is one byte
6473 long. However, we can relax a section more than once and in that
6474 case we must either set fr_subtype back to the unrelaxed state,
6475 or return the value for the appropriate branch. */
6476 return md_relax_table
[fragP
->fr_subtype
].rlx_length
;
6479 /* Called after relax() is finished.
6481 In: Address of frag.
6482 fr_type == rs_machine_dependent.
6483 fr_subtype is what the address relaxed to.
6485 Out: Any fixSs and constants are set up.
6486 Caller will turn frag into a ".space 0". */
6489 md_convert_frag (abfd
, sec
, fragP
)
6490 bfd
*abfd ATTRIBUTE_UNUSED
;
6491 segT sec ATTRIBUTE_UNUSED
;
6494 unsigned char *opcode
;
6495 unsigned char *where_to_put_displacement
= NULL
;
6496 offsetT target_address
;
6497 offsetT opcode_address
;
6498 unsigned int extension
= 0;
6499 offsetT displacement_from_opcode_start
;
6501 opcode
= (unsigned char *) fragP
->fr_opcode
;
6503 /* Address we want to reach in file space. */
6504 target_address
= S_GET_VALUE (fragP
->fr_symbol
) + fragP
->fr_offset
;
6506 /* Address opcode resides at in file space. */
6507 opcode_address
= fragP
->fr_address
+ fragP
->fr_fix
;
6509 /* Displacement from opcode start to fill into instruction. */
6510 displacement_from_opcode_start
= target_address
- opcode_address
;
6512 if ((fragP
->fr_subtype
& BIG
) == 0)
6514 /* Don't have to change opcode. */
6515 extension
= 1; /* 1 opcode + 1 displacement */
6516 where_to_put_displacement
= &opcode
[1];
6520 if (no_cond_jump_promotion
6521 && TYPE_FROM_RELAX_STATE (fragP
->fr_subtype
) != UNCOND_JUMP
)
6522 as_warn_where (fragP
->fr_file
, fragP
->fr_line
,
6523 _("long jump required"));
6525 switch (fragP
->fr_subtype
)
6527 case ENCODE_RELAX_STATE (UNCOND_JUMP
, BIG
):
6528 extension
= 4; /* 1 opcode + 4 displacement */
6530 where_to_put_displacement
= &opcode
[1];
6533 case ENCODE_RELAX_STATE (UNCOND_JUMP
, BIG16
):
6534 extension
= 2; /* 1 opcode + 2 displacement */
6536 where_to_put_displacement
= &opcode
[1];
6539 case ENCODE_RELAX_STATE (COND_JUMP
, BIG
):
6540 case ENCODE_RELAX_STATE (COND_JUMP86
, BIG
):
6541 extension
= 5; /* 2 opcode + 4 displacement */
6542 opcode
[1] = opcode
[0] + 0x10;
6543 opcode
[0] = TWO_BYTE_OPCODE_ESCAPE
;
6544 where_to_put_displacement
= &opcode
[2];
6547 case ENCODE_RELAX_STATE (COND_JUMP
, BIG16
):
6548 extension
= 3; /* 2 opcode + 2 displacement */
6549 opcode
[1] = opcode
[0] + 0x10;
6550 opcode
[0] = TWO_BYTE_OPCODE_ESCAPE
;
6551 where_to_put_displacement
= &opcode
[2];
6554 case ENCODE_RELAX_STATE (COND_JUMP86
, BIG16
):
6559 where_to_put_displacement
= &opcode
[3];
6563 BAD_CASE (fragP
->fr_subtype
);
6568 /* If size if less then four we are sure that the operand fits,
6569 but if it's 4, then it could be that the displacement is larger
6571 if (DISP_SIZE_FROM_RELAX_STATE (fragP
->fr_subtype
) == 4
6573 && ((addressT
) (displacement_from_opcode_start
- extension
6574 + ((addressT
) 1 << 31))
6575 > (((addressT
) 2 << 31) - 1)))
6577 as_bad_where (fragP
->fr_file
, fragP
->fr_line
,
6578 _("jump target out of range"));
6579 /* Make us emit 0. */
6580 displacement_from_opcode_start
= extension
;
6582 /* Now put displacement after opcode. */
6583 md_number_to_chars ((char *) where_to_put_displacement
,
6584 (valueT
) (displacement_from_opcode_start
- extension
),
6585 DISP_SIZE_FROM_RELAX_STATE (fragP
->fr_subtype
));
6586 fragP
->fr_fix
+= extension
;
6589 /* Size of byte displacement jmp. */
6590 int md_short_jump_size
= 2;
6592 /* Size of dword displacement jmp. */
6593 int md_long_jump_size
= 5;
6596 md_create_short_jump (ptr
, from_addr
, to_addr
, frag
, to_symbol
)
6598 addressT from_addr
, to_addr
;
6599 fragS
*frag ATTRIBUTE_UNUSED
;
6600 symbolS
*to_symbol ATTRIBUTE_UNUSED
;
6604 offset
= to_addr
- (from_addr
+ 2);
6605 /* Opcode for byte-disp jump. */
6606 md_number_to_chars (ptr
, (valueT
) 0xeb, 1);
6607 md_number_to_chars (ptr
+ 1, (valueT
) offset
, 1);
6611 md_create_long_jump (ptr
, from_addr
, to_addr
, frag
, to_symbol
)
6613 addressT from_addr
, to_addr
;
6614 fragS
*frag ATTRIBUTE_UNUSED
;
6615 symbolS
*to_symbol ATTRIBUTE_UNUSED
;
6619 offset
= to_addr
- (from_addr
+ 5);
6620 md_number_to_chars (ptr
, (valueT
) 0xe9, 1);
6621 md_number_to_chars (ptr
+ 1, (valueT
) offset
, 4);
6624 /* Apply a fixup (fixS) to segment data, once it has been determined
6625 by our caller that we have all the info we need to fix it up.
6627 On the 386, immediates, displacements, and data pointers are all in
6628 the same (little-endian) format, so we don't need to care about which
6632 md_apply_fix (fixP
, valP
, seg
)
6633 /* The fix we're to put in. */
6635 /* Pointer to the value of the bits. */
6637 /* Segment fix is from. */
6638 segT seg ATTRIBUTE_UNUSED
;
6640 char *p
= fixP
->fx_where
+ fixP
->fx_frag
->fr_literal
;
6641 valueT value
= *valP
;
6643 #if !defined (TE_Mach)
6646 switch (fixP
->fx_r_type
)
6652 fixP
->fx_r_type
= BFD_RELOC_64_PCREL
;
6655 case BFD_RELOC_X86_64_32S
:
6656 fixP
->fx_r_type
= BFD_RELOC_32_PCREL
;
6659 fixP
->fx_r_type
= BFD_RELOC_16_PCREL
;
6662 fixP
->fx_r_type
= BFD_RELOC_8_PCREL
;
6667 if (fixP
->fx_addsy
!= NULL
6668 && (fixP
->fx_r_type
== BFD_RELOC_32_PCREL
6669 || fixP
->fx_r_type
== BFD_RELOC_64_PCREL
6670 || fixP
->fx_r_type
== BFD_RELOC_16_PCREL
6671 || fixP
->fx_r_type
== BFD_RELOC_8_PCREL
)
6672 && !use_rela_relocations
)
6674 /* This is a hack. There should be a better way to handle this.
6675 This covers for the fact that bfd_install_relocation will
6676 subtract the current location (for partial_inplace, PC relative
6677 relocations); see more below. */
6681 || OUTPUT_FLAVOR
== bfd_target_coff_flavour
6684 value
+= fixP
->fx_where
+ fixP
->fx_frag
->fr_address
;
6686 #if defined (OBJ_ELF) || defined (OBJ_MAYBE_ELF)
6689 segT sym_seg
= S_GET_SEGMENT (fixP
->fx_addsy
);
6692 || (symbol_section_p (fixP
->fx_addsy
)
6693 && sym_seg
!= absolute_section
))
6694 && !generic_force_reloc (fixP
))
6696 /* Yes, we add the values in twice. This is because
6697 bfd_install_relocation subtracts them out again. I think
6698 bfd_install_relocation is broken, but I don't dare change
6700 value
+= fixP
->fx_where
+ fixP
->fx_frag
->fr_address
;
6704 #if defined (OBJ_COFF) && defined (TE_PE)
6705 /* For some reason, the PE format does not store a
6706 section address offset for a PC relative symbol. */
6707 if (S_GET_SEGMENT (fixP
->fx_addsy
) != seg
6708 || S_IS_WEAK (fixP
->fx_addsy
))
6709 value
+= md_pcrel_from (fixP
);
6713 /* Fix a few things - the dynamic linker expects certain values here,
6714 and we must not disappoint it. */
6715 #if defined (OBJ_ELF) || defined (OBJ_MAYBE_ELF)
6716 if (IS_ELF
&& fixP
->fx_addsy
)
6717 switch (fixP
->fx_r_type
)
6719 case BFD_RELOC_386_PLT32
:
6720 case BFD_RELOC_X86_64_PLT32
:
6721 /* Make the jump instruction point to the address of the operand. At
6722 runtime we merely add the offset to the actual PLT entry. */
6726 case BFD_RELOC_386_TLS_GD
:
6727 case BFD_RELOC_386_TLS_LDM
:
6728 case BFD_RELOC_386_TLS_IE_32
:
6729 case BFD_RELOC_386_TLS_IE
:
6730 case BFD_RELOC_386_TLS_GOTIE
:
6731 case BFD_RELOC_386_TLS_GOTDESC
:
6732 case BFD_RELOC_X86_64_TLSGD
:
6733 case BFD_RELOC_X86_64_TLSLD
:
6734 case BFD_RELOC_X86_64_GOTTPOFF
:
6735 case BFD_RELOC_X86_64_GOTPC32_TLSDESC
:
6736 value
= 0; /* Fully resolved at runtime. No addend. */
6738 case BFD_RELOC_386_TLS_LE
:
6739 case BFD_RELOC_386_TLS_LDO_32
:
6740 case BFD_RELOC_386_TLS_LE_32
:
6741 case BFD_RELOC_X86_64_DTPOFF32
:
6742 case BFD_RELOC_X86_64_DTPOFF64
:
6743 case BFD_RELOC_X86_64_TPOFF32
:
6744 case BFD_RELOC_X86_64_TPOFF64
:
6745 S_SET_THREAD_LOCAL (fixP
->fx_addsy
);
6748 case BFD_RELOC_386_TLS_DESC_CALL
:
6749 case BFD_RELOC_X86_64_TLSDESC_CALL
:
6750 value
= 0; /* Fully resolved at runtime. No addend. */
6751 S_SET_THREAD_LOCAL (fixP
->fx_addsy
);
6755 case BFD_RELOC_386_GOT32
:
6756 case BFD_RELOC_X86_64_GOT32
:
6757 value
= 0; /* Fully resolved at runtime. No addend. */
6760 case BFD_RELOC_VTABLE_INHERIT
:
6761 case BFD_RELOC_VTABLE_ENTRY
:
6768 #endif /* defined (OBJ_ELF) || defined (OBJ_MAYBE_ELF) */
6770 #endif /* !defined (TE_Mach) */
6772 /* Are we finished with this relocation now? */
6773 if (fixP
->fx_addsy
== NULL
)
6775 else if (use_rela_relocations
)
6777 fixP
->fx_no_overflow
= 1;
6778 /* Remember value for tc_gen_reloc. */
6779 fixP
->fx_addnumber
= value
;
6783 md_number_to_chars (p
, value
, fixP
->fx_size
);
6786 #define MAX_LITTLENUMS 6
6788 /* Turn the string pointed to by litP into a floating point constant
6789 of type TYPE, and emit the appropriate bytes. The number of
6790 LITTLENUMS emitted is stored in *SIZEP. An error message is
6791 returned, or NULL on OK. */
6794 md_atof (type
, litP
, sizeP
)
6800 LITTLENUM_TYPE words
[MAX_LITTLENUMS
];
6801 LITTLENUM_TYPE
*wordP
;
6823 return _("Bad call to md_atof ()");
6825 t
= atof_ieee (input_line_pointer
, type
, words
);
6827 input_line_pointer
= t
;
6829 *sizeP
= prec
* sizeof (LITTLENUM_TYPE
);
6830 /* This loops outputs the LITTLENUMs in REVERSE order; in accord with
6831 the bigendian 386. */
6832 for (wordP
= words
+ prec
- 1; prec
--;)
6834 md_number_to_chars (litP
, (valueT
) (*wordP
--), sizeof (LITTLENUM_TYPE
));
6835 litP
+= sizeof (LITTLENUM_TYPE
);
6840 static char output_invalid_buf
[sizeof (unsigned char) * 2 + 6];
6843 output_invalid (int c
)
6846 snprintf (output_invalid_buf
, sizeof (output_invalid_buf
),
6849 snprintf (output_invalid_buf
, sizeof (output_invalid_buf
),
6850 "(0x%x)", (unsigned char) c
);
6851 return output_invalid_buf
;
6854 /* REG_STRING starts *before* REGISTER_PREFIX. */
6856 static const reg_entry
*
6857 parse_real_register (char *reg_string
, char **end_op
)
6859 char *s
= reg_string
;
6861 char reg_name_given
[MAX_REG_NAME_SIZE
+ 1];
6864 /* Skip possible REGISTER_PREFIX and possible whitespace. */
6865 if (*s
== REGISTER_PREFIX
)
6868 if (is_space_char (*s
))
6872 while ((*p
++ = register_chars
[(unsigned char) *s
]) != '\0')
6874 if (p
>= reg_name_given
+ MAX_REG_NAME_SIZE
)
6875 return (const reg_entry
*) NULL
;
6879 /* For naked regs, make sure that we are not dealing with an identifier.
6880 This prevents confusing an identifier like `eax_var' with register
6882 if (allow_naked_reg
&& identifier_chars
[(unsigned char) *s
])
6883 return (const reg_entry
*) NULL
;
6887 r
= (const reg_entry
*) hash_find (reg_hash
, reg_name_given
);
6889 /* Handle floating point regs, allowing spaces in the (i) part. */
6890 if (r
== i386_regtab
/* %st is first entry of table */)
6892 if (is_space_char (*s
))
6897 if (is_space_char (*s
))
6899 if (*s
>= '0' && *s
<= '7')
6903 if (is_space_char (*s
))
6908 r
= hash_find (reg_hash
, "st(0)");
6913 /* We have "%st(" then garbage. */
6914 return (const reg_entry
*) NULL
;
6918 /* Don't allow fake index register unless allow_index_reg isn't 0. */
6921 && (r
->reg_num
== RegEiz
|| r
->reg_num
== RegRiz
))
6922 return (const reg_entry
*) NULL
;
6925 && ((r
->reg_flags
& (RegRex64
| RegRex
))
6926 || r
->reg_type
.bitfield
.reg64
)
6927 && (!cpu_arch_flags
.bitfield
.cpulm
6928 || !UINTS_EQUAL (r
->reg_type
, control
))
6929 && flag_code
!= CODE_64BIT
)
6930 return (const reg_entry
*) NULL
;
6935 /* REG_STRING starts *before* REGISTER_PREFIX. */
6937 static const reg_entry
*
6938 parse_register (char *reg_string
, char **end_op
)
6942 if (*reg_string
== REGISTER_PREFIX
|| allow_naked_reg
)
6943 r
= parse_real_register (reg_string
, end_op
);
6948 char *save
= input_line_pointer
;
6952 input_line_pointer
= reg_string
;
6953 c
= get_symbol_end ();
6954 symbolP
= symbol_find (reg_string
);
6955 if (symbolP
&& S_GET_SEGMENT (symbolP
) == reg_section
)
6957 const expressionS
*e
= symbol_get_value_expression (symbolP
);
6959 know (e
->X_op
== O_register
);
6960 know (e
->X_add_number
>= 0
6961 && (valueT
) e
->X_add_number
< i386_regtab_size
);
6962 r
= i386_regtab
+ e
->X_add_number
;
6963 *end_op
= input_line_pointer
;
6965 *input_line_pointer
= c
;
6966 input_line_pointer
= save
;
6972 i386_parse_name (char *name
, expressionS
*e
, char *nextcharP
)
6975 char *end
= input_line_pointer
;
6978 r
= parse_register (name
, &input_line_pointer
);
6979 if (r
&& end
<= input_line_pointer
)
6981 *nextcharP
= *input_line_pointer
;
6982 *input_line_pointer
= 0;
6983 e
->X_op
= O_register
;
6984 e
->X_add_number
= r
- i386_regtab
;
6987 input_line_pointer
= end
;
6993 md_operand (expressionS
*e
)
6995 if (*input_line_pointer
== REGISTER_PREFIX
)
6998 const reg_entry
*r
= parse_real_register (input_line_pointer
, &end
);
7002 e
->X_op
= O_register
;
7003 e
->X_add_number
= r
- i386_regtab
;
7004 input_line_pointer
= end
;
7010 #if defined (OBJ_ELF) || defined (OBJ_MAYBE_ELF)
7011 const char *md_shortopts
= "kVQ:sqn";
7013 const char *md_shortopts
= "qn";
7016 #define OPTION_32 (OPTION_MD_BASE + 0)
7017 #define OPTION_64 (OPTION_MD_BASE + 1)
7018 #define OPTION_DIVIDE (OPTION_MD_BASE + 2)
7019 #define OPTION_MARCH (OPTION_MD_BASE + 3)
7020 #define OPTION_MTUNE (OPTION_MD_BASE + 4)
7022 struct option md_longopts
[] =
7024 {"32", no_argument
, NULL
, OPTION_32
},
7025 #if defined (OBJ_ELF) || defined (OBJ_MAYBE_ELF) || defined(TE_PEP)
7026 {"64", no_argument
, NULL
, OPTION_64
},
7028 {"divide", no_argument
, NULL
, OPTION_DIVIDE
},
7029 {"march", required_argument
, NULL
, OPTION_MARCH
},
7030 {"mtune", required_argument
, NULL
, OPTION_MTUNE
},
7031 {NULL
, no_argument
, NULL
, 0}
7033 size_t md_longopts_size
= sizeof (md_longopts
);
7036 md_parse_option (int c
, char *arg
)
7043 optimize_align_code
= 0;
7050 #if defined (OBJ_ELF) || defined (OBJ_MAYBE_ELF)
7051 /* -Qy, -Qn: SVR4 arguments controlling whether a .comment section
7052 should be emitted or not. FIXME: Not implemented. */
7056 /* -V: SVR4 argument to print version ID. */
7058 print_version_id ();
7061 /* -k: Ignore for FreeBSD compatibility. */
7066 /* -s: On i386 Solaris, this tells the native assembler to use
7067 .stab instead of .stab.excl. We always use .stab anyhow. */
7070 #if defined (OBJ_ELF) || defined (OBJ_MAYBE_ELF) || defined(TE_PEP)
7073 const char **list
, **l
;
7075 list
= bfd_target_list ();
7076 for (l
= list
; *l
!= NULL
; l
++)
7077 if (CONST_STRNEQ (*l
, "elf64-x86-64")
7078 || strcmp (*l
, "coff-x86-64") == 0
7079 || strcmp (*l
, "pe-x86-64") == 0
7080 || strcmp (*l
, "pei-x86-64") == 0)
7082 default_arch
= "x86_64";
7086 as_fatal (_("No compiled in support for x86_64"));
7093 default_arch
= "i386";
7097 #ifdef SVR4_COMMENT_CHARS
7102 n
= (char *) xmalloc (strlen (i386_comment_chars
) + 1);
7104 for (s
= i386_comment_chars
; *s
!= '\0'; s
++)
7108 i386_comment_chars
= n
;
7115 as_fatal (_("Invalid -march= option: `%s'"), arg
);
7116 for (i
= 0; i
< ARRAY_SIZE (cpu_arch
); i
++)
7118 if (strcmp (arg
, cpu_arch
[i
].name
) == 0)
7120 cpu_arch_isa
= cpu_arch
[i
].type
;
7121 cpu_arch_isa_flags
= cpu_arch
[i
].flags
;
7122 if (!cpu_arch_tune_set
)
7124 cpu_arch_tune
= cpu_arch_isa
;
7125 cpu_arch_tune_flags
= cpu_arch_isa_flags
;
7130 if (i
>= ARRAY_SIZE (cpu_arch
))
7131 as_fatal (_("Invalid -march= option: `%s'"), arg
);
7136 as_fatal (_("Invalid -mtune= option: `%s'"), arg
);
7137 for (i
= 0; i
< ARRAY_SIZE (cpu_arch
); i
++)
7139 if (strcmp (arg
, cpu_arch
[i
].name
) == 0)
7141 cpu_arch_tune_set
= 1;
7142 cpu_arch_tune
= cpu_arch
[i
].type
;
7143 cpu_arch_tune_flags
= cpu_arch
[i
].flags
;
7147 if (i
>= ARRAY_SIZE (cpu_arch
))
7148 as_fatal (_("Invalid -mtune= option: `%s'"), arg
);
7158 md_show_usage (stream
)
7161 #if defined (OBJ_ELF) || defined (OBJ_MAYBE_ELF)
7162 fprintf (stream
, _("\
7164 -V print assembler version number\n\
7167 fprintf (stream
, _("\
7168 -n Do not optimize code alignment\n\
7169 -q quieten some warnings\n"));
7170 #if defined (OBJ_ELF) || defined (OBJ_MAYBE_ELF)
7171 fprintf (stream
, _("\
7174 #if defined (OBJ_ELF) || defined (OBJ_MAYBE_ELF) || defined(TE_PEP)
7175 fprintf (stream
, _("\
7176 --32/--64 generate 32bit/64bit code\n"));
7178 #ifdef SVR4_COMMENT_CHARS
7179 fprintf (stream
, _("\
7180 --divide do not treat `/' as a comment character\n"));
7182 fprintf (stream
, _("\
7183 --divide ignored\n"));
7185 fprintf (stream
, _("\
7186 -march=CPU/-mtune=CPU generate code/optimize for CPU, where CPU is one of:\n\
7187 i386, i486, pentium, pentiumpro, pentium4, nocona,\n\
7188 core, core2, k6, athlon, k8, generic32, generic64\n"));
7192 #if ((defined (OBJ_MAYBE_COFF) && defined (OBJ_MAYBE_AOUT)) \
7193 || defined (OBJ_ELF) || defined (OBJ_MAYBE_ELF) || defined (TE_PEP))
7195 /* Pick the target format to use. */
7198 i386_target_format (void)
7200 if (!strcmp (default_arch
, "x86_64"))
7202 set_code_flag (CODE_64BIT
);
7203 if (UINTS_ALL_ZERO (cpu_arch_isa_flags
))
7205 cpu_arch_isa_flags
.bitfield
.cpui186
= 1;
7206 cpu_arch_isa_flags
.bitfield
.cpui286
= 1;
7207 cpu_arch_isa_flags
.bitfield
.cpui386
= 1;
7208 cpu_arch_isa_flags
.bitfield
.cpui486
= 1;
7209 cpu_arch_isa_flags
.bitfield
.cpui586
= 1;
7210 cpu_arch_isa_flags
.bitfield
.cpui686
= 1;
7211 cpu_arch_isa_flags
.bitfield
.cpup4
= 1;
7212 cpu_arch_isa_flags
.bitfield
.cpummx
= 1;
7213 cpu_arch_isa_flags
.bitfield
.cpummx2
= 1;
7214 cpu_arch_isa_flags
.bitfield
.cpusse
= 1;
7215 cpu_arch_isa_flags
.bitfield
.cpusse2
= 1;
7217 if (UINTS_ALL_ZERO (cpu_arch_tune_flags
))
7219 cpu_arch_tune_flags
.bitfield
.cpui186
= 1;
7220 cpu_arch_tune_flags
.bitfield
.cpui286
= 1;
7221 cpu_arch_tune_flags
.bitfield
.cpui386
= 1;
7222 cpu_arch_tune_flags
.bitfield
.cpui486
= 1;
7223 cpu_arch_tune_flags
.bitfield
.cpui586
= 1;
7224 cpu_arch_tune_flags
.bitfield
.cpui686
= 1;
7225 cpu_arch_tune_flags
.bitfield
.cpup4
= 1;
7226 cpu_arch_tune_flags
.bitfield
.cpummx
= 1;
7227 cpu_arch_tune_flags
.bitfield
.cpummx2
= 1;
7228 cpu_arch_tune_flags
.bitfield
.cpusse
= 1;
7229 cpu_arch_tune_flags
.bitfield
.cpusse2
= 1;
7232 else if (!strcmp (default_arch
, "i386"))
7234 set_code_flag (CODE_32BIT
);
7235 if (UINTS_ALL_ZERO (cpu_arch_isa_flags
))
7237 cpu_arch_isa_flags
.bitfield
.cpui186
= 1;
7238 cpu_arch_isa_flags
.bitfield
.cpui286
= 1;
7239 cpu_arch_isa_flags
.bitfield
.cpui386
= 1;
7241 if (UINTS_ALL_ZERO (cpu_arch_tune_flags
))
7243 cpu_arch_tune_flags
.bitfield
.cpui186
= 1;
7244 cpu_arch_tune_flags
.bitfield
.cpui286
= 1;
7245 cpu_arch_tune_flags
.bitfield
.cpui386
= 1;
7249 as_fatal (_("Unknown architecture"));
7250 switch (OUTPUT_FLAVOR
)
7253 case bfd_target_coff_flavour
:
7254 return flag_code
== CODE_64BIT
? COFF_TARGET_FORMAT
: "coff-i386";
7257 #ifdef OBJ_MAYBE_AOUT
7258 case bfd_target_aout_flavour
:
7259 return AOUT_TARGET_FORMAT
;
7261 #ifdef OBJ_MAYBE_COFF
7262 case bfd_target_coff_flavour
:
7265 #if defined (OBJ_MAYBE_ELF) || defined (OBJ_ELF)
7266 case bfd_target_elf_flavour
:
7268 if (flag_code
== CODE_64BIT
)
7271 use_rela_relocations
= 1;
7273 return flag_code
== CODE_64BIT
? ELF_TARGET_FORMAT64
: ELF_TARGET_FORMAT
;
7282 #endif /* OBJ_MAYBE_ more than one */
7284 #if (defined (OBJ_ELF) || defined (OBJ_MAYBE_ELF))
7286 i386_elf_emit_arch_note (void)
7288 if (IS_ELF
&& cpu_arch_name
!= NULL
)
7291 asection
*seg
= now_seg
;
7292 subsegT subseg
= now_subseg
;
7293 Elf_Internal_Note i_note
;
7294 Elf_External_Note e_note
;
7295 asection
*note_secp
;
7298 /* Create the .note section. */
7299 note_secp
= subseg_new (".note", 0);
7300 bfd_set_section_flags (stdoutput
,
7302 SEC_HAS_CONTENTS
| SEC_READONLY
);
7304 /* Process the arch string. */
7305 len
= strlen (cpu_arch_name
);
7307 i_note
.namesz
= len
+ 1;
7309 i_note
.type
= NT_ARCH
;
7310 p
= frag_more (sizeof (e_note
.namesz
));
7311 md_number_to_chars (p
, (valueT
) i_note
.namesz
, sizeof (e_note
.namesz
));
7312 p
= frag_more (sizeof (e_note
.descsz
));
7313 md_number_to_chars (p
, (valueT
) i_note
.descsz
, sizeof (e_note
.descsz
));
7314 p
= frag_more (sizeof (e_note
.type
));
7315 md_number_to_chars (p
, (valueT
) i_note
.type
, sizeof (e_note
.type
));
7316 p
= frag_more (len
+ 1);
7317 strcpy (p
, cpu_arch_name
);
7319 frag_align (2, 0, 0);
7321 subseg_set (seg
, subseg
);
7327 md_undefined_symbol (name
)
7330 if (name
[0] == GLOBAL_OFFSET_TABLE_NAME
[0]
7331 && name
[1] == GLOBAL_OFFSET_TABLE_NAME
[1]
7332 && name
[2] == GLOBAL_OFFSET_TABLE_NAME
[2]
7333 && strcmp (name
, GLOBAL_OFFSET_TABLE_NAME
) == 0)
7337 if (symbol_find (name
))
7338 as_bad (_("GOT already in symbol table"));
7339 GOT_symbol
= symbol_new (name
, undefined_section
,
7340 (valueT
) 0, &zero_address_frag
);
7347 /* Round up a section size to the appropriate boundary. */
7350 md_section_align (segment
, size
)
7351 segT segment ATTRIBUTE_UNUSED
;
7354 #if (defined (OBJ_AOUT) || defined (OBJ_MAYBE_AOUT))
7355 if (OUTPUT_FLAVOR
== bfd_target_aout_flavour
)
7357 /* For a.out, force the section size to be aligned. If we don't do
7358 this, BFD will align it for us, but it will not write out the
7359 final bytes of the section. This may be a bug in BFD, but it is
7360 easier to fix it here since that is how the other a.out targets
7364 align
= bfd_get_section_alignment (stdoutput
, segment
);
7365 size
= ((size
+ (1 << align
) - 1) & ((valueT
) -1 << align
));
7372 /* On the i386, PC-relative offsets are relative to the start of the
7373 next instruction. That is, the address of the offset, plus its
7374 size, since the offset is always the last part of the insn. */
7377 md_pcrel_from (fixS
*fixP
)
7379 return fixP
->fx_size
+ fixP
->fx_where
+ fixP
->fx_frag
->fr_address
;
7385 s_bss (int ignore ATTRIBUTE_UNUSED
)
7389 #if defined (OBJ_ELF) || defined (OBJ_MAYBE_ELF)
7391 obj_elf_section_change_hook ();
7393 temp
= get_absolute_expression ();
7394 subseg_set (bss_section
, (subsegT
) temp
);
7395 demand_empty_rest_of_line ();
7401 i386_validate_fix (fixS
*fixp
)
7403 if (fixp
->fx_subsy
&& fixp
->fx_subsy
== GOT_symbol
)
7405 if (fixp
->fx_r_type
== BFD_RELOC_32_PCREL
)
7409 fixp
->fx_r_type
= BFD_RELOC_X86_64_GOTPCREL
;
7414 fixp
->fx_r_type
= BFD_RELOC_386_GOTOFF
;
7416 fixp
->fx_r_type
= BFD_RELOC_X86_64_GOTOFF64
;
7423 tc_gen_reloc (section
, fixp
)
7424 asection
*section ATTRIBUTE_UNUSED
;
7428 bfd_reloc_code_real_type code
;
7430 switch (fixp
->fx_r_type
)
7432 case BFD_RELOC_X86_64_PLT32
:
7433 case BFD_RELOC_X86_64_GOT32
:
7434 case BFD_RELOC_X86_64_GOTPCREL
:
7435 case BFD_RELOC_386_PLT32
:
7436 case BFD_RELOC_386_GOT32
:
7437 case BFD_RELOC_386_GOTOFF
:
7438 case BFD_RELOC_386_GOTPC
:
7439 case BFD_RELOC_386_TLS_GD
:
7440 case BFD_RELOC_386_TLS_LDM
:
7441 case BFD_RELOC_386_TLS_LDO_32
:
7442 case BFD_RELOC_386_TLS_IE_32
:
7443 case BFD_RELOC_386_TLS_IE
:
7444 case BFD_RELOC_386_TLS_GOTIE
:
7445 case BFD_RELOC_386_TLS_LE_32
:
7446 case BFD_RELOC_386_TLS_LE
:
7447 case BFD_RELOC_386_TLS_GOTDESC
:
7448 case BFD_RELOC_386_TLS_DESC_CALL
:
7449 case BFD_RELOC_X86_64_TLSGD
:
7450 case BFD_RELOC_X86_64_TLSLD
:
7451 case BFD_RELOC_X86_64_DTPOFF32
:
7452 case BFD_RELOC_X86_64_DTPOFF64
:
7453 case BFD_RELOC_X86_64_GOTTPOFF
:
7454 case BFD_RELOC_X86_64_TPOFF32
:
7455 case BFD_RELOC_X86_64_TPOFF64
:
7456 case BFD_RELOC_X86_64_GOTOFF64
:
7457 case BFD_RELOC_X86_64_GOTPC32
:
7458 case BFD_RELOC_X86_64_GOT64
:
7459 case BFD_RELOC_X86_64_GOTPCREL64
:
7460 case BFD_RELOC_X86_64_GOTPC64
:
7461 case BFD_RELOC_X86_64_GOTPLT64
:
7462 case BFD_RELOC_X86_64_PLTOFF64
:
7463 case BFD_RELOC_X86_64_GOTPC32_TLSDESC
:
7464 case BFD_RELOC_X86_64_TLSDESC_CALL
:
7466 case BFD_RELOC_VTABLE_ENTRY
:
7467 case BFD_RELOC_VTABLE_INHERIT
:
7469 case BFD_RELOC_32_SECREL
:
7471 code
= fixp
->fx_r_type
;
7473 case BFD_RELOC_X86_64_32S
:
7474 if (!fixp
->fx_pcrel
)
7476 /* Don't turn BFD_RELOC_X86_64_32S into BFD_RELOC_32. */
7477 code
= fixp
->fx_r_type
;
7483 switch (fixp
->fx_size
)
7486 as_bad_where (fixp
->fx_file
, fixp
->fx_line
,
7487 _("can not do %d byte pc-relative relocation"),
7489 code
= BFD_RELOC_32_PCREL
;
7491 case 1: code
= BFD_RELOC_8_PCREL
; break;
7492 case 2: code
= BFD_RELOC_16_PCREL
; break;
7493 case 4: code
= BFD_RELOC_32_PCREL
; break;
7495 case 8: code
= BFD_RELOC_64_PCREL
; break;
7501 switch (fixp
->fx_size
)
7504 as_bad_where (fixp
->fx_file
, fixp
->fx_line
,
7505 _("can not do %d byte relocation"),
7507 code
= BFD_RELOC_32
;
7509 case 1: code
= BFD_RELOC_8
; break;
7510 case 2: code
= BFD_RELOC_16
; break;
7511 case 4: code
= BFD_RELOC_32
; break;
7513 case 8: code
= BFD_RELOC_64
; break;
7520 if ((code
== BFD_RELOC_32
7521 || code
== BFD_RELOC_32_PCREL
7522 || code
== BFD_RELOC_X86_64_32S
)
7524 && fixp
->fx_addsy
== GOT_symbol
)
7527 code
= BFD_RELOC_386_GOTPC
;
7529 code
= BFD_RELOC_X86_64_GOTPC32
;
7531 if ((code
== BFD_RELOC_64
|| code
== BFD_RELOC_64_PCREL
)
7533 && fixp
->fx_addsy
== GOT_symbol
)
7535 code
= BFD_RELOC_X86_64_GOTPC64
;
7538 rel
= (arelent
*) xmalloc (sizeof (arelent
));
7539 rel
->sym_ptr_ptr
= (asymbol
**) xmalloc (sizeof (asymbol
*));
7540 *rel
->sym_ptr_ptr
= symbol_get_bfdsym (fixp
->fx_addsy
);
7542 rel
->address
= fixp
->fx_frag
->fr_address
+ fixp
->fx_where
;
7544 if (!use_rela_relocations
)
7546 /* HACK: Since i386 ELF uses Rel instead of Rela, encode the
7547 vtable entry to be used in the relocation's section offset. */
7548 if (fixp
->fx_r_type
== BFD_RELOC_VTABLE_ENTRY
)
7549 rel
->address
= fixp
->fx_offset
;
7553 /* Use the rela in 64bit mode. */
7556 if (!fixp
->fx_pcrel
)
7557 rel
->addend
= fixp
->fx_offset
;
7561 case BFD_RELOC_X86_64_PLT32
:
7562 case BFD_RELOC_X86_64_GOT32
:
7563 case BFD_RELOC_X86_64_GOTPCREL
:
7564 case BFD_RELOC_X86_64_TLSGD
:
7565 case BFD_RELOC_X86_64_TLSLD
:
7566 case BFD_RELOC_X86_64_GOTTPOFF
:
7567 case BFD_RELOC_X86_64_GOTPC32_TLSDESC
:
7568 case BFD_RELOC_X86_64_TLSDESC_CALL
:
7569 rel
->addend
= fixp
->fx_offset
- fixp
->fx_size
;
7572 rel
->addend
= (section
->vma
7574 + fixp
->fx_addnumber
7575 + md_pcrel_from (fixp
));
7580 rel
->howto
= bfd_reloc_type_lookup (stdoutput
, code
);
7581 if (rel
->howto
== NULL
)
7583 as_bad_where (fixp
->fx_file
, fixp
->fx_line
,
7584 _("cannot represent relocation type %s"),
7585 bfd_get_reloc_code_name (code
));
7586 /* Set howto to a garbage value so that we can keep going. */
7587 rel
->howto
= bfd_reloc_type_lookup (stdoutput
, BFD_RELOC_32
);
7588 assert (rel
->howto
!= NULL
);
7595 /* Parse operands using Intel syntax. This implements a recursive descent
7596 parser based on the BNF grammar published in Appendix B of the MASM 6.1
7599 FIXME: We do not recognize the full operand grammar defined in the MASM
7600 documentation. In particular, all the structure/union and
7601 high-level macro operands are missing.
7603 Uppercase words are terminals, lower case words are non-terminals.
7604 Objects surrounded by double brackets '[[' ']]' are optional. Vertical
7605 bars '|' denote choices. Most grammar productions are implemented in
7606 functions called 'intel_<production>'.
7608 Initial production is 'expr'.
7614 binOp & | AND | \| | OR | ^ | XOR
7616 byteRegister AL | AH | BL | BH | CL | CH | DL | DH
7618 constant digits [[ radixOverride ]]
7620 dataType BYTE | WORD | DWORD | FWORD | QWORD | TBYTE | OWORD | XMMWORD
7658 => expr expr cmpOp e04
7661 gpRegister AX | EAX | BX | EBX | CX | ECX | DX | EDX
7662 | BP | EBP | SP | ESP | DI | EDI | SI | ESI
7664 hexdigit a | b | c | d | e | f
7665 | A | B | C | D | E | F
7671 mulOp * | / | % | MOD | << | SHL | >> | SHR
7675 register specialRegister
7679 segmentRegister CS | DS | ES | FS | GS | SS
7681 specialRegister CR0 | CR2 | CR3 | CR4
7682 | DR0 | DR1 | DR2 | DR3 | DR6 | DR7
7683 | TR3 | TR4 | TR5 | TR6 | TR7
7685 We simplify the grammar in obvious places (e.g., register parsing is
7686 done by calling parse_register) and eliminate immediate left recursion
7687 to implement a recursive-descent parser.
7691 expr' cmpOp e04 expr'
7742 /* Parsing structure for the intel syntax parser. Used to implement the
7743 semantic actions for the operand grammar. */
7744 struct intel_parser_s
7746 char *op_string
; /* The string being parsed. */
7747 int got_a_float
; /* Whether the operand is a float. */
7748 int op_modifier
; /* Operand modifier. */
7749 int is_mem
; /* 1 if operand is memory reference. */
7750 int in_offset
; /* >=1 if parsing operand of offset. */
7751 int in_bracket
; /* >=1 if parsing operand in brackets. */
7752 const reg_entry
*reg
; /* Last register reference found. */
7753 char *disp
; /* Displacement string being built. */
7754 char *next_operand
; /* Resume point when splitting operands. */
7757 static struct intel_parser_s intel_parser
;
7759 /* Token structure for parsing intel syntax. */
7762 int code
; /* Token code. */
7763 const reg_entry
*reg
; /* Register entry for register tokens. */
7764 char *str
; /* String representation. */
7767 static struct intel_token cur_token
, prev_token
;
7769 /* Token codes for the intel parser. Since T_SHORT is already used
7770 by COFF, undefine it first to prevent a warning. */
7789 /* Prototypes for intel parser functions. */
7790 static int intel_match_token (int);
7791 static void intel_putback_token (void);
7792 static void intel_get_token (void);
7793 static int intel_expr (void);
7794 static int intel_e04 (void);
7795 static int intel_e05 (void);
7796 static int intel_e06 (void);
7797 static int intel_e09 (void);
7798 static int intel_e10 (void);
7799 static int intel_e11 (void);
7802 i386_intel_operand (char *operand_string
, int got_a_float
)
7807 p
= intel_parser
.op_string
= xstrdup (operand_string
);
7808 intel_parser
.disp
= (char *) xmalloc (strlen (operand_string
) + 1);
7812 /* Initialize token holders. */
7813 cur_token
.code
= prev_token
.code
= T_NIL
;
7814 cur_token
.reg
= prev_token
.reg
= NULL
;
7815 cur_token
.str
= prev_token
.str
= NULL
;
7817 /* Initialize parser structure. */
7818 intel_parser
.got_a_float
= got_a_float
;
7819 intel_parser
.op_modifier
= 0;
7820 intel_parser
.is_mem
= 0;
7821 intel_parser
.in_offset
= 0;
7822 intel_parser
.in_bracket
= 0;
7823 intel_parser
.reg
= NULL
;
7824 intel_parser
.disp
[0] = '\0';
7825 intel_parser
.next_operand
= NULL
;
7827 /* Read the first token and start the parser. */
7829 ret
= intel_expr ();
7834 if (cur_token
.code
!= T_NIL
)
7836 as_bad (_("invalid operand for '%s' ('%s' unexpected)"),
7837 current_templates
->start
->name
, cur_token
.str
);
7840 /* If we found a memory reference, hand it over to i386_displacement
7841 to fill in the rest of the operand fields. */
7842 else if (intel_parser
.is_mem
)
7844 if ((i
.mem_operands
== 1
7845 && !current_templates
->start
->opcode_modifier
.isstring
)
7846 || i
.mem_operands
== 2)
7848 as_bad (_("too many memory references for '%s'"),
7849 current_templates
->start
->name
);
7854 char *s
= intel_parser
.disp
;
7857 if (!quiet_warnings
&& intel_parser
.is_mem
< 0)
7858 /* See the comments in intel_bracket_expr. */
7859 as_warn (_("Treating `%s' as memory reference"), operand_string
);
7861 /* Add the displacement expression. */
7863 ret
= i386_displacement (s
, s
+ strlen (s
));
7866 /* Swap base and index in 16-bit memory operands like
7867 [si+bx]. Since i386_index_check is also used in AT&T
7868 mode we have to do that here. */
7871 && i
.base_reg
->reg_type
.bitfield
.reg16
7872 && i
.index_reg
->reg_type
.bitfield
.reg16
7873 && i
.base_reg
->reg_num
>= 6
7874 && i
.index_reg
->reg_num
< 6)
7876 const reg_entry
*base
= i
.index_reg
;
7878 i
.index_reg
= i
.base_reg
;
7881 ret
= i386_index_check (operand_string
);
7886 /* Constant and OFFSET expressions are handled by i386_immediate. */
7887 else if ((intel_parser
.op_modifier
& (1 << T_OFFSET
))
7888 || intel_parser
.reg
== NULL
)
7889 ret
= i386_immediate (intel_parser
.disp
);
7891 if (intel_parser
.next_operand
&& this_operand
>= MAX_OPERANDS
- 1)
7893 if (!ret
|| !intel_parser
.next_operand
)
7895 intel_parser
.op_string
= intel_parser
.next_operand
;
7896 this_operand
= i
.operands
++;
7900 free (intel_parser
.disp
);
7905 #define NUM_ADDRESS_REGS (!!i.base_reg + !!i.index_reg)
7909 expr' cmpOp e04 expr'
7914 /* XXX Implement the comparison operators. */
7915 return intel_e04 ();
7932 if (nregs
>= 0 && NUM_ADDRESS_REGS
> nregs
)
7933 i
.base_reg
= i386_regtab
+ REGNAM_AL
; /* al is invalid as base */
7935 if (cur_token
.code
== '+')
7937 else if (cur_token
.code
== '-')
7938 nregs
= NUM_ADDRESS_REGS
;
7942 strcat (intel_parser
.disp
, cur_token
.str
);
7943 intel_match_token (cur_token
.code
);
7954 int nregs
= ~NUM_ADDRESS_REGS
;
7961 if (cur_token
.code
== '&'
7962 || cur_token
.code
== '|'
7963 || cur_token
.code
== '^')
7967 str
[0] = cur_token
.code
;
7969 strcat (intel_parser
.disp
, str
);
7974 intel_match_token (cur_token
.code
);
7979 if (nregs
>= 0 && NUM_ADDRESS_REGS
> nregs
)
7980 i
.base_reg
= i386_regtab
+ REGNAM_AL
+ 1; /* cl is invalid as base */
7991 int nregs
= ~NUM_ADDRESS_REGS
;
7998 if (cur_token
.code
== '*'
7999 || cur_token
.code
== '/'
8000 || cur_token
.code
== '%')
8004 str
[0] = cur_token
.code
;
8006 strcat (intel_parser
.disp
, str
);
8008 else if (cur_token
.code
== T_SHL
)
8009 strcat (intel_parser
.disp
, "<<");
8010 else if (cur_token
.code
== T_SHR
)
8011 strcat (intel_parser
.disp
, ">>");
8015 intel_match_token (cur_token
.code
);
8020 if (nregs
>= 0 && NUM_ADDRESS_REGS
> nregs
)
8021 i
.base_reg
= i386_regtab
+ REGNAM_AL
+ 2; /* dl is invalid as base */
8039 int nregs
= ~NUM_ADDRESS_REGS
;
8044 /* Don't consume constants here. */
8045 if (cur_token
.code
== '+' || cur_token
.code
== '-')
8047 /* Need to look one token ahead - if the next token
8048 is a constant, the current token is its sign. */
8051 intel_match_token (cur_token
.code
);
8052 next_code
= cur_token
.code
;
8053 intel_putback_token ();
8054 if (next_code
== T_CONST
)
8058 /* e09 OFFSET e09 */
8059 if (cur_token
.code
== T_OFFSET
)
8062 ++intel_parser
.in_offset
;
8066 else if (cur_token
.code
== T_SHORT
)
8067 intel_parser
.op_modifier
|= 1 << T_SHORT
;
8070 else if (cur_token
.code
== '+')
8071 strcat (intel_parser
.disp
, "+");
8076 else if (cur_token
.code
== '-' || cur_token
.code
== '~')
8082 str
[0] = cur_token
.code
;
8084 strcat (intel_parser
.disp
, str
);
8091 intel_match_token (cur_token
.code
);
8099 /* e09' PTR e10 e09' */
8100 if (cur_token
.code
== T_PTR
)
8104 if (prev_token
.code
== T_BYTE
)
8105 suffix
= BYTE_MNEM_SUFFIX
;
8107 else if (prev_token
.code
== T_WORD
)
8109 if (current_templates
->start
->name
[0] == 'l'
8110 && current_templates
->start
->name
[2] == 's'
8111 && current_templates
->start
->name
[3] == 0)
8112 suffix
= BYTE_MNEM_SUFFIX
; /* so it will cause an error */
8113 else if (intel_parser
.got_a_float
== 2) /* "fi..." */
8114 suffix
= SHORT_MNEM_SUFFIX
;
8116 suffix
= WORD_MNEM_SUFFIX
;
8119 else if (prev_token
.code
== T_DWORD
)
8121 if (current_templates
->start
->name
[0] == 'l'
8122 && current_templates
->start
->name
[2] == 's'
8123 && current_templates
->start
->name
[3] == 0)
8124 suffix
= WORD_MNEM_SUFFIX
;
8125 else if (flag_code
== CODE_16BIT
8126 && (current_templates
->start
->opcode_modifier
.jump
8127 || current_templates
->start
->opcode_modifier
.jumpdword
))
8128 suffix
= LONG_DOUBLE_MNEM_SUFFIX
;
8129 else if (intel_parser
.got_a_float
== 1) /* "f..." */
8130 suffix
= SHORT_MNEM_SUFFIX
;
8132 suffix
= LONG_MNEM_SUFFIX
;
8135 else if (prev_token
.code
== T_FWORD
)
8137 if (current_templates
->start
->name
[0] == 'l'
8138 && current_templates
->start
->name
[2] == 's'
8139 && current_templates
->start
->name
[3] == 0)
8140 suffix
= LONG_MNEM_SUFFIX
;
8141 else if (!intel_parser
.got_a_float
)
8143 if (flag_code
== CODE_16BIT
)
8144 add_prefix (DATA_PREFIX_OPCODE
);
8145 suffix
= LONG_DOUBLE_MNEM_SUFFIX
;
8148 suffix
= BYTE_MNEM_SUFFIX
; /* so it will cause an error */
8151 else if (prev_token
.code
== T_QWORD
)
8153 if (intel_parser
.got_a_float
== 1) /* "f..." */
8154 suffix
= LONG_MNEM_SUFFIX
;
8156 suffix
= QWORD_MNEM_SUFFIX
;
8159 else if (prev_token
.code
== T_TBYTE
)
8161 if (intel_parser
.got_a_float
== 1)
8162 suffix
= LONG_DOUBLE_MNEM_SUFFIX
;
8164 suffix
= BYTE_MNEM_SUFFIX
; /* so it will cause an error */
8167 else if (prev_token
.code
== T_XMMWORD
)
8169 /* XXX ignored for now, but accepted since gcc uses it */
8175 as_bad (_("Unknown operand modifier `%s'"), prev_token
.str
);
8179 /* Operands for jump/call using 'ptr' notation denote absolute
8181 if (current_templates
->start
->opcode_modifier
.jump
8182 || current_templates
->start
->opcode_modifier
.jumpdword
)
8183 i
.types
[this_operand
].bitfield
.jumpabsolute
= 1;
8185 if (current_templates
->start
->base_opcode
== 0x8d /* lea */)
8189 else if (i
.suffix
!= suffix
)
8191 as_bad (_("Conflicting operand modifiers"));
8197 /* e09' : e10 e09' */
8198 else if (cur_token
.code
== ':')
8200 if (prev_token
.code
!= T_REG
)
8202 /* While {call,jmp} SSSS:OOOO is MASM syntax only when SSSS is a
8203 segment/group identifier (which we don't have), using comma
8204 as the operand separator there is even less consistent, since
8205 there all branches only have a single operand. */
8206 if (this_operand
!= 0
8207 || intel_parser
.in_offset
8208 || intel_parser
.in_bracket
8209 || (!current_templates
->start
->opcode_modifier
.jump
8210 && !current_templates
->start
->opcode_modifier
.jumpdword
8211 && !current_templates
->start
->opcode_modifier
.jumpintersegment
8212 && !current_templates
->start
->operand_types
[0].bitfield
.jumpabsolute
))
8213 return intel_match_token (T_NIL
);
8214 /* Remember the start of the 2nd operand and terminate 1st
8216 XXX This isn't right, yet (when SSSS:OOOO is right operand of
8217 another expression), but it gets at least the simplest case
8218 (a plain number or symbol on the left side) right. */
8219 intel_parser
.next_operand
= intel_parser
.op_string
;
8220 *--intel_parser
.op_string
= '\0';
8221 return intel_match_token (':');
8229 intel_match_token (cur_token
.code
);
8235 --intel_parser
.in_offset
;
8238 if (NUM_ADDRESS_REGS
> nregs
)
8240 as_bad (_("Invalid operand to `OFFSET'"));
8243 intel_parser
.op_modifier
|= 1 << T_OFFSET
;
8246 if (nregs
>= 0 && NUM_ADDRESS_REGS
> nregs
)
8247 i
.base_reg
= i386_regtab
+ REGNAM_AL
+ 3; /* bl is invalid as base */
8252 intel_bracket_expr (void)
8254 int was_offset
= intel_parser
.op_modifier
& (1 << T_OFFSET
);
8255 const char *start
= intel_parser
.op_string
;
8258 if (i
.op
[this_operand
].regs
)
8259 return intel_match_token (T_NIL
);
8261 intel_match_token ('[');
8263 /* Mark as a memory operand only if it's not already known to be an
8264 offset expression. If it's an offset expression, we need to keep
8266 if (!intel_parser
.in_offset
)
8268 ++intel_parser
.in_bracket
;
8270 /* Operands for jump/call inside brackets denote absolute addresses. */
8271 if (current_templates
->start
->opcode_modifier
.jump
8272 || current_templates
->start
->opcode_modifier
.jumpdword
)
8273 i
.types
[this_operand
].bitfield
.jumpabsolute
= 1;
8275 /* Unfortunately gas always diverged from MASM in a respect that can't
8276 be easily fixed without risking to break code sequences likely to be
8277 encountered (the testsuite even check for this): MASM doesn't consider
8278 an expression inside brackets unconditionally as a memory reference.
8279 When that is e.g. a constant, an offset expression, or the sum of the
8280 two, this is still taken as a constant load. gas, however, always
8281 treated these as memory references. As a compromise, we'll try to make
8282 offset expressions inside brackets work the MASM way (since that's
8283 less likely to be found in real world code), but make constants alone
8284 continue to work the traditional gas way. In either case, issue a
8286 intel_parser
.op_modifier
&= ~was_offset
;
8289 strcat (intel_parser
.disp
, "[");
8291 /* Add a '+' to the displacement string if necessary. */
8292 if (*intel_parser
.disp
!= '\0'
8293 && *(intel_parser
.disp
+ strlen (intel_parser
.disp
) - 1) != '+')
8294 strcat (intel_parser
.disp
, "+");
8297 && (len
= intel_parser
.op_string
- start
- 1,
8298 intel_match_token (']')))
8300 /* Preserve brackets when the operand is an offset expression. */
8301 if (intel_parser
.in_offset
)
8302 strcat (intel_parser
.disp
, "]");
8305 --intel_parser
.in_bracket
;
8306 if (i
.base_reg
|| i
.index_reg
)
8307 intel_parser
.is_mem
= 1;
8308 if (!intel_parser
.is_mem
)
8310 if (!(intel_parser
.op_modifier
& (1 << T_OFFSET
)))
8311 /* Defer the warning until all of the operand was parsed. */
8312 intel_parser
.is_mem
= -1;
8313 else if (!quiet_warnings
)
8314 as_warn (_("`[%.*s]' taken to mean just `%.*s'"),
8315 len
, start
, len
, start
);
8318 intel_parser
.op_modifier
|= was_offset
;
8335 while (cur_token
.code
== '[')
8337 if (!intel_bracket_expr ())
8362 switch (cur_token
.code
)
8366 intel_match_token ('(');
8367 strcat (intel_parser
.disp
, "(");
8369 if (intel_expr () && intel_match_token (')'))
8371 strcat (intel_parser
.disp
, ")");
8378 return intel_bracket_expr ();
8383 strcat (intel_parser
.disp
, cur_token
.str
);
8384 intel_match_token (cur_token
.code
);
8386 /* Mark as a memory operand only if it's not already known to be an
8387 offset expression. */
8388 if (!intel_parser
.in_offset
)
8389 intel_parser
.is_mem
= 1;
8396 const reg_entry
*reg
= intel_parser
.reg
= cur_token
.reg
;
8398 intel_match_token (T_REG
);
8400 /* Check for segment change. */
8401 if (cur_token
.code
== ':')
8403 if (!reg
->reg_type
.bitfield
.sreg2
8404 && !reg
->reg_type
.bitfield
.sreg3
)
8406 as_bad (_("`%s' is not a valid segment register"),
8410 else if (i
.seg
[i
.mem_operands
])
8411 as_warn (_("Extra segment override ignored"));
8414 if (!intel_parser
.in_offset
)
8415 intel_parser
.is_mem
= 1;
8416 switch (reg
->reg_num
)
8419 i
.seg
[i
.mem_operands
] = &es
;
8422 i
.seg
[i
.mem_operands
] = &cs
;
8425 i
.seg
[i
.mem_operands
] = &ss
;
8428 i
.seg
[i
.mem_operands
] = &ds
;
8431 i
.seg
[i
.mem_operands
] = &fs
;
8434 i
.seg
[i
.mem_operands
] = &gs
;
8440 /* Not a segment register. Check for register scaling. */
8441 else if (cur_token
.code
== '*')
8443 if (!intel_parser
.in_bracket
)
8445 as_bad (_("Register scaling only allowed in memory operands"));
8449 if (reg
->reg_type
.bitfield
.reg16
) /* Disallow things like [si*1]. */
8450 reg
= i386_regtab
+ REGNAM_AX
+ 4; /* sp is invalid as index */
8451 else if (i
.index_reg
)
8452 reg
= i386_regtab
+ REGNAM_EAX
+ 4; /* esp is invalid as index */
8454 /* What follows must be a valid scale. */
8455 intel_match_token ('*');
8457 i
.types
[this_operand
].bitfield
.baseindex
= 1;
8459 /* Set the scale after setting the register (otherwise,
8460 i386_scale will complain) */
8461 if (cur_token
.code
== '+' || cur_token
.code
== '-')
8463 char *str
, sign
= cur_token
.code
;
8464 intel_match_token (cur_token
.code
);
8465 if (cur_token
.code
!= T_CONST
)
8467 as_bad (_("Syntax error: Expecting a constant, got `%s'"),
8471 str
= (char *) xmalloc (strlen (cur_token
.str
) + 2);
8472 strcpy (str
+ 1, cur_token
.str
);
8474 if (!i386_scale (str
))
8478 else if (!i386_scale (cur_token
.str
))
8480 intel_match_token (cur_token
.code
);
8483 /* No scaling. If this is a memory operand, the register is either a
8484 base register (first occurrence) or an index register (second
8486 else if (intel_parser
.in_bracket
)
8491 else if (!i
.index_reg
)
8495 as_bad (_("Too many register references in memory operand"));
8499 i
.types
[this_operand
].bitfield
.baseindex
= 1;
8502 /* It's neither base nor index. */
8503 else if (!intel_parser
.in_offset
&& !intel_parser
.is_mem
)
8505 i386_operand_type temp
= reg
->reg_type
;
8506 temp
.bitfield
.baseindex
= 0;
8507 i
.types
[this_operand
] = operand_type_or (i
.types
[this_operand
],
8509 i
.op
[this_operand
].regs
= reg
;
8514 as_bad (_("Invalid use of register"));
8518 /* Since registers are not part of the displacement string (except
8519 when we're parsing offset operands), we may need to remove any
8520 preceding '+' from the displacement string. */
8521 if (*intel_parser
.disp
!= '\0'
8522 && !intel_parser
.in_offset
)
8524 char *s
= intel_parser
.disp
;
8525 s
+= strlen (s
) - 1;
8548 intel_match_token (cur_token
.code
);
8550 if (cur_token
.code
== T_PTR
)
8553 /* It must have been an identifier. */
8554 intel_putback_token ();
8555 cur_token
.code
= T_ID
;
8561 if (!intel_parser
.in_offset
&& intel_parser
.is_mem
<= 0)
8565 /* The identifier represents a memory reference only if it's not
8566 preceded by an offset modifier and if it's not an equate. */
8567 symbolP
= symbol_find(cur_token
.str
);
8568 if (!symbolP
|| S_GET_SEGMENT(symbolP
) != absolute_section
)
8569 intel_parser
.is_mem
= 1;
8577 char *save_str
, sign
= 0;
8579 /* Allow constants that start with `+' or `-'. */
8580 if (cur_token
.code
== '-' || cur_token
.code
== '+')
8582 sign
= cur_token
.code
;
8583 intel_match_token (cur_token
.code
);
8584 if (cur_token
.code
!= T_CONST
)
8586 as_bad (_("Syntax error: Expecting a constant, got `%s'"),
8592 save_str
= (char *) xmalloc (strlen (cur_token
.str
) + 2);
8593 strcpy (save_str
+ !!sign
, cur_token
.str
);
8597 /* Get the next token to check for register scaling. */
8598 intel_match_token (cur_token
.code
);
8600 /* Check if this constant is a scaling factor for an
8602 if (cur_token
.code
== '*')
8604 if (intel_match_token ('*') && cur_token
.code
== T_REG
)
8606 const reg_entry
*reg
= cur_token
.reg
;
8608 if (!intel_parser
.in_bracket
)
8610 as_bad (_("Register scaling only allowed "
8611 "in memory operands"));
8615 /* Disallow things like [1*si].
8616 sp and esp are invalid as index. */
8617 if (reg
->reg_type
.bitfield
.reg16
)
8618 reg
= i386_regtab
+ REGNAM_AX
+ 4;
8619 else if (i
.index_reg
)
8620 reg
= i386_regtab
+ REGNAM_EAX
+ 4;
8622 /* The constant is followed by `* reg', so it must be
8625 i
.types
[this_operand
].bitfield
.baseindex
= 1;
8627 /* Set the scale after setting the register (otherwise,
8628 i386_scale will complain) */
8629 if (!i386_scale (save_str
))
8631 intel_match_token (T_REG
);
8633 /* Since registers are not part of the displacement
8634 string, we may need to remove any preceding '+' from
8635 the displacement string. */
8636 if (*intel_parser
.disp
!= '\0')
8638 char *s
= intel_parser
.disp
;
8639 s
+= strlen (s
) - 1;
8649 /* The constant was not used for register scaling. Since we have
8650 already consumed the token following `*' we now need to put it
8651 back in the stream. */
8652 intel_putback_token ();
8655 /* Add the constant to the displacement string. */
8656 strcat (intel_parser
.disp
, save_str
);
8663 as_bad (_("Unrecognized token '%s'"), cur_token
.str
);
8667 /* Match the given token against cur_token. If they match, read the next
8668 token from the operand string. */
8670 intel_match_token (int code
)
8672 if (cur_token
.code
== code
)
8679 as_bad (_("Unexpected token `%s'"), cur_token
.str
);
8684 /* Read a new token from intel_parser.op_string and store it in cur_token. */
8686 intel_get_token (void)
8689 const reg_entry
*reg
;
8690 struct intel_token new_token
;
8692 new_token
.code
= T_NIL
;
8693 new_token
.reg
= NULL
;
8694 new_token
.str
= NULL
;
8696 /* Free the memory allocated to the previous token and move
8697 cur_token to prev_token. */
8699 free (prev_token
.str
);
8701 prev_token
= cur_token
;
8703 /* Skip whitespace. */
8704 while (is_space_char (*intel_parser
.op_string
))
8705 intel_parser
.op_string
++;
8707 /* Return an empty token if we find nothing else on the line. */
8708 if (*intel_parser
.op_string
== '\0')
8710 cur_token
= new_token
;
8714 /* The new token cannot be larger than the remainder of the operand
8716 new_token
.str
= (char *) xmalloc (strlen (intel_parser
.op_string
) + 1);
8717 new_token
.str
[0] = '\0';
8719 if (strchr ("0123456789", *intel_parser
.op_string
))
8721 char *p
= new_token
.str
;
8722 char *q
= intel_parser
.op_string
;
8723 new_token
.code
= T_CONST
;
8725 /* Allow any kind of identifier char to encompass floating point and
8726 hexadecimal numbers. */
8727 while (is_identifier_char (*q
))
8731 /* Recognize special symbol names [0-9][bf]. */
8732 if (strlen (intel_parser
.op_string
) == 2
8733 && (intel_parser
.op_string
[1] == 'b'
8734 || intel_parser
.op_string
[1] == 'f'))
8735 new_token
.code
= T_ID
;
8738 else if ((reg
= parse_register (intel_parser
.op_string
, &end_op
)) != NULL
)
8740 size_t len
= end_op
- intel_parser
.op_string
;
8742 new_token
.code
= T_REG
;
8743 new_token
.reg
= reg
;
8745 memcpy (new_token
.str
, intel_parser
.op_string
, len
);
8746 new_token
.str
[len
] = '\0';
8749 else if (is_identifier_char (*intel_parser
.op_string
))
8751 char *p
= new_token
.str
;
8752 char *q
= intel_parser
.op_string
;
8754 /* A '.' or '$' followed by an identifier char is an identifier.
8755 Otherwise, it's operator '.' followed by an expression. */
8756 if ((*q
== '.' || *q
== '$') && !is_identifier_char (*(q
+ 1)))
8758 new_token
.code
= '.';
8759 new_token
.str
[0] = '.';
8760 new_token
.str
[1] = '\0';
8764 while (is_identifier_char (*q
) || *q
== '@')
8768 if (strcasecmp (new_token
.str
, "NOT") == 0)
8769 new_token
.code
= '~';
8771 else if (strcasecmp (new_token
.str
, "MOD") == 0)
8772 new_token
.code
= '%';
8774 else if (strcasecmp (new_token
.str
, "AND") == 0)
8775 new_token
.code
= '&';
8777 else if (strcasecmp (new_token
.str
, "OR") == 0)
8778 new_token
.code
= '|';
8780 else if (strcasecmp (new_token
.str
, "XOR") == 0)
8781 new_token
.code
= '^';
8783 else if (strcasecmp (new_token
.str
, "SHL") == 0)
8784 new_token
.code
= T_SHL
;
8786 else if (strcasecmp (new_token
.str
, "SHR") == 0)
8787 new_token
.code
= T_SHR
;
8789 else if (strcasecmp (new_token
.str
, "BYTE") == 0)
8790 new_token
.code
= T_BYTE
;
8792 else if (strcasecmp (new_token
.str
, "WORD") == 0)
8793 new_token
.code
= T_WORD
;
8795 else if (strcasecmp (new_token
.str
, "DWORD") == 0)
8796 new_token
.code
= T_DWORD
;
8798 else if (strcasecmp (new_token
.str
, "FWORD") == 0)
8799 new_token
.code
= T_FWORD
;
8801 else if (strcasecmp (new_token
.str
, "QWORD") == 0)
8802 new_token
.code
= T_QWORD
;
8804 else if (strcasecmp (new_token
.str
, "TBYTE") == 0
8805 /* XXX remove (gcc still uses it) */
8806 || strcasecmp (new_token
.str
, "XWORD") == 0)
8807 new_token
.code
= T_TBYTE
;
8809 else if (strcasecmp (new_token
.str
, "XMMWORD") == 0
8810 || strcasecmp (new_token
.str
, "OWORD") == 0)
8811 new_token
.code
= T_XMMWORD
;
8813 else if (strcasecmp (new_token
.str
, "PTR") == 0)
8814 new_token
.code
= T_PTR
;
8816 else if (strcasecmp (new_token
.str
, "SHORT") == 0)
8817 new_token
.code
= T_SHORT
;
8819 else if (strcasecmp (new_token
.str
, "OFFSET") == 0)
8821 new_token
.code
= T_OFFSET
;
8823 /* ??? This is not mentioned in the MASM grammar but gcc
8824 makes use of it with -mintel-syntax. OFFSET may be
8825 followed by FLAT: */
8826 if (strncasecmp (q
, " FLAT:", 6) == 0)
8827 strcat (new_token
.str
, " FLAT:");
8830 /* ??? This is not mentioned in the MASM grammar. */
8831 else if (strcasecmp (new_token
.str
, "FLAT") == 0)
8833 new_token
.code
= T_OFFSET
;
8835 strcat (new_token
.str
, ":");
8837 as_bad (_("`:' expected"));
8841 new_token
.code
= T_ID
;
8845 else if (strchr ("+-/*%|&^:[]()~", *intel_parser
.op_string
))
8847 new_token
.code
= *intel_parser
.op_string
;
8848 new_token
.str
[0] = *intel_parser
.op_string
;
8849 new_token
.str
[1] = '\0';
8852 else if (strchr ("<>", *intel_parser
.op_string
)
8853 && *intel_parser
.op_string
== *(intel_parser
.op_string
+ 1))
8855 new_token
.code
= *intel_parser
.op_string
== '<' ? T_SHL
: T_SHR
;
8856 new_token
.str
[0] = *intel_parser
.op_string
;
8857 new_token
.str
[1] = *intel_parser
.op_string
;
8858 new_token
.str
[2] = '\0';
8862 as_bad (_("Unrecognized token `%s'"), intel_parser
.op_string
);
8864 intel_parser
.op_string
+= strlen (new_token
.str
);
8865 cur_token
= new_token
;
8868 /* Put cur_token back into the token stream and make cur_token point to
8871 intel_putback_token (void)
8873 if (cur_token
.code
!= T_NIL
)
8875 intel_parser
.op_string
-= strlen (cur_token
.str
);
8876 free (cur_token
.str
);
8878 cur_token
= prev_token
;
8880 /* Forget prev_token. */
8881 prev_token
.code
= T_NIL
;
8882 prev_token
.reg
= NULL
;
8883 prev_token
.str
= NULL
;
8887 tc_x86_regname_to_dw2regnum (char *regname
)
8889 unsigned int regnum
;
8890 unsigned int regnames_count
;
8891 static const char *const regnames_32
[] =
8893 "eax", "ecx", "edx", "ebx",
8894 "esp", "ebp", "esi", "edi",
8895 "eip", "eflags", NULL
,
8896 "st0", "st1", "st2", "st3",
8897 "st4", "st5", "st6", "st7",
8899 "xmm0", "xmm1", "xmm2", "xmm3",
8900 "xmm4", "xmm5", "xmm6", "xmm7",
8901 "mm0", "mm1", "mm2", "mm3",
8902 "mm4", "mm5", "mm6", "mm7",
8903 "fcw", "fsw", "mxcsr",
8904 "es", "cs", "ss", "ds", "fs", "gs", NULL
, NULL
,
8907 static const char *const regnames_64
[] =
8909 "rax", "rdx", "rcx", "rbx",
8910 "rsi", "rdi", "rbp", "rsp",
8911 "r8", "r9", "r10", "r11",
8912 "r12", "r13", "r14", "r15",
8914 "xmm0", "xmm1", "xmm2", "xmm3",
8915 "xmm4", "xmm5", "xmm6", "xmm7",
8916 "xmm8", "xmm9", "xmm10", "xmm11",
8917 "xmm12", "xmm13", "xmm14", "xmm15",
8918 "st0", "st1", "st2", "st3",
8919 "st4", "st5", "st6", "st7",
8920 "mm0", "mm1", "mm2", "mm3",
8921 "mm4", "mm5", "mm6", "mm7",
8923 "es", "cs", "ss", "ds", "fs", "gs", NULL
, NULL
,
8924 "fs.base", "gs.base", NULL
, NULL
,
8926 "mxcsr", "fcw", "fsw"
8928 const char *const *regnames
;
8930 if (flag_code
== CODE_64BIT
)
8932 regnames
= regnames_64
;
8933 regnames_count
= ARRAY_SIZE (regnames_64
);
8937 regnames
= regnames_32
;
8938 regnames_count
= ARRAY_SIZE (regnames_32
);
8941 for (regnum
= 0; regnum
< regnames_count
; regnum
++)
8942 if (regnames
[regnum
] != NULL
8943 && strcmp (regname
, regnames
[regnum
]) == 0)
8950 tc_x86_frame_initial_instructions (void)
8952 static unsigned int sp_regno
;
8955 sp_regno
= tc_x86_regname_to_dw2regnum (flag_code
== CODE_64BIT
8958 cfi_add_CFA_def_cfa (sp_regno
, -x86_cie_data_alignment
);
8959 cfi_add_CFA_offset (x86_dwarf2_return_column
, x86_cie_data_alignment
);
8963 i386_elf_section_type (const char *str
, size_t len
)
8965 if (flag_code
== CODE_64BIT
8966 && len
== sizeof ("unwind") - 1
8967 && strncmp (str
, "unwind", 6) == 0)
8968 return SHT_X86_64_UNWIND
;
8975 tc_pe_dwarf2_emit_offset (symbolS
*symbol
, unsigned int size
)
8979 expr
.X_op
= O_secrel
;
8980 expr
.X_add_symbol
= symbol
;
8981 expr
.X_add_number
= 0;
8982 emit_expr (&expr
, size
);
8986 #if defined (OBJ_ELF) || defined (OBJ_MAYBE_ELF)
8987 /* For ELF on x86-64, add support for SHF_X86_64_LARGE. */
8990 x86_64_section_letter (int letter
, char **ptr_msg
)
8992 if (flag_code
== CODE_64BIT
)
8995 return SHF_X86_64_LARGE
;
8997 *ptr_msg
= _("Bad .section directive: want a,l,w,x,M,S,G,T in string");
9000 *ptr_msg
= _("Bad .section directive: want a,w,x,M,S,G,T in string");
9005 x86_64_section_word (char *str
, size_t len
)
9007 if (len
== 5 && flag_code
== CODE_64BIT
&& CONST_STRNEQ (str
, "large"))
9008 return SHF_X86_64_LARGE
;
9014 handle_large_common (int small ATTRIBUTE_UNUSED
)
9016 if (flag_code
!= CODE_64BIT
)
9018 s_comm_internal (0, elf_common_parse
);
9019 as_warn (_(".largecomm supported only in 64bit mode, producing .comm"));
9023 static segT lbss_section
;
9024 asection
*saved_com_section_ptr
= elf_com_section_ptr
;
9025 asection
*saved_bss_section
= bss_section
;
9027 if (lbss_section
== NULL
)
9029 flagword applicable
;
9031 subsegT subseg
= now_subseg
;
9033 /* The .lbss section is for local .largecomm symbols. */
9034 lbss_section
= subseg_new (".lbss", 0);
9035 applicable
= bfd_applicable_section_flags (stdoutput
);
9036 bfd_set_section_flags (stdoutput
, lbss_section
,
9037 applicable
& SEC_ALLOC
);
9038 seg_info (lbss_section
)->bss
= 1;
9040 subseg_set (seg
, subseg
);
9043 elf_com_section_ptr
= &_bfd_elf_large_com_section
;
9044 bss_section
= lbss_section
;
9046 s_comm_internal (0, elf_common_parse
);
9048 elf_com_section_ptr
= saved_com_section_ptr
;
9049 bss_section
= saved_bss_section
;
9052 #endif /* OBJ_ELF || OBJ_MAYBE_ELF */