Commit | Line | Data |
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252b5132 | 1 | /* tc-i386.h -- Header file for tc-i386.c |
f7e42eb4 | 2 | Copyright 1989, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, |
4dc85607 | 3 | 2001, 2002, 2003, 2004, 2005, 2006, 2007 |
f7e42eb4 | 4 | Free Software Foundation, Inc. |
252b5132 RH |
5 | |
6 | This file is part of GAS, the GNU Assembler. | |
7 | ||
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 2, or (at your option) | |
11 | any later version. | |
12 | ||
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. | |
17 | ||
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 | |
4b4da160 NC |
20 | Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA |
21 | 02110-1301, USA. */ | |
252b5132 RH |
22 | |
23 | #ifndef TC_I386 | |
24 | #define TC_I386 1 | |
25 | ||
252b5132 | 26 | struct fix; |
252b5132 RH |
27 | |
28 | #define TARGET_BYTES_BIG_ENDIAN 0 | |
29 | ||
252b5132 | 30 | #define TARGET_ARCH bfd_arch_i386 |
b9d79e03 | 31 | #define TARGET_MACH (i386_mach ()) |
b7c92712 | 32 | extern unsigned long i386_mach (void); |
252b5132 | 33 | |
cac5b87b DB |
34 | #ifdef TE_FreeBSD |
35 | #define AOUT_TARGET_FORMAT "a.out-i386-freebsd" | |
36 | #endif | |
252b5132 | 37 | #ifdef TE_NetBSD |
4c63da97 | 38 | #define AOUT_TARGET_FORMAT "a.out-i386-netbsd" |
252b5132 RH |
39 | #endif |
40 | #ifdef TE_386BSD | |
4c63da97 | 41 | #define AOUT_TARGET_FORMAT "a.out-i386-bsd" |
252b5132 RH |
42 | #endif |
43 | #ifdef TE_LINUX | |
4c63da97 | 44 | #define AOUT_TARGET_FORMAT "a.out-i386-linux" |
252b5132 RH |
45 | #endif |
46 | #ifdef TE_Mach | |
4c63da97 | 47 | #define AOUT_TARGET_FORMAT "a.out-mach3" |
252b5132 RH |
48 | #endif |
49 | #ifdef TE_DYNIX | |
4c63da97 | 50 | #define AOUT_TARGET_FORMAT "a.out-i386-dynix" |
252b5132 | 51 | #endif |
4c63da97 AM |
52 | #ifndef AOUT_TARGET_FORMAT |
53 | #define AOUT_TARGET_FORMAT "a.out-i386" | |
252b5132 | 54 | #endif |
252b5132 | 55 | |
4ada7262 DB |
56 | #ifdef TE_FreeBSD |
57 | #define ELF_TARGET_FORMAT "elf32-i386-freebsd" | |
9d7cbccd | 58 | #define ELF_TARGET_FORMAT64 "elf64-x86-64-freebsd" |
eac338cf PB |
59 | #elif defined (TE_VXWORKS) |
60 | #define ELF_TARGET_FORMAT "elf32-i386-vxworks" | |
4ada7262 | 61 | #endif |
eac338cf | 62 | |
4ada7262 DB |
63 | #ifndef ELF_TARGET_FORMAT |
64 | #define ELF_TARGET_FORMAT "elf32-i386" | |
65 | #endif | |
66 | ||
9d7cbccd NC |
67 | #ifndef ELF_TARGET_FORMAT64 |
68 | #define ELF_TARGET_FORMAT64 "elf64-x86-64" | |
69 | #endif | |
70 | ||
3e73aa7c JH |
71 | #if ((defined (OBJ_MAYBE_COFF) && defined (OBJ_MAYBE_AOUT)) \ |
72 | || defined (OBJ_ELF) || defined (OBJ_MAYBE_ELF)) | |
e3bb37b5 | 73 | extern const char *i386_target_format (void); |
4c63da97 AM |
74 | #define TARGET_FORMAT i386_target_format () |
75 | #else | |
252b5132 | 76 | #ifdef OBJ_ELF |
4ada7262 | 77 | #define TARGET_FORMAT ELF_TARGET_FORMAT |
252b5132 | 78 | #endif |
4c63da97 AM |
79 | #ifdef OBJ_AOUT |
80 | #define TARGET_FORMAT AOUT_TARGET_FORMAT | |
252b5132 RH |
81 | #endif |
82 | #endif | |
83 | ||
a847613f AM |
84 | #if (defined (OBJ_MAYBE_ELF) || defined (OBJ_ELF)) |
85 | #define md_end i386_elf_emit_arch_note | |
e3bb37b5 | 86 | extern void i386_elf_emit_arch_note (void); |
a847613f AM |
87 | #endif |
88 | ||
18e1d487 AM |
89 | #define SUB_SEGMENT_ALIGN(SEG, FRCHAIN) 0 |
90 | ||
6088b00e | 91 | #define LOCAL_LABELS_FB 1 |
252b5132 RH |
92 | |
93 | extern const char extra_symbol_chars[]; | |
94 | #define tc_symbol_chars extra_symbol_chars | |
95 | ||
b3b91714 AM |
96 | extern const char *i386_comment_chars; |
97 | #define tc_comment_chars i386_comment_chars | |
98 | ||
252b5132 RH |
99 | /* Prefixes will be emitted in the order defined below. |
100 | WAIT_PREFIX must be the first prefix since FWAIT is really is an | |
9021ec07 L |
101 | instruction, and so must come before any prefixes. |
102 | The preferred prefix order is SEG_PREFIX, ADDR_PREFIX, DATA_PREFIX, | |
103 | LOCKREP_PREFIX. */ | |
252b5132 | 104 | #define WAIT_PREFIX 0 |
9021ec07 | 105 | #define SEG_PREFIX 1 |
252b5132 RH |
106 | #define ADDR_PREFIX 2 |
107 | #define DATA_PREFIX 3 | |
9021ec07 | 108 | #define LOCKREP_PREFIX 4 |
3e73aa7c JH |
109 | #define REX_PREFIX 5 /* must come last. */ |
110 | #define MAX_PREFIXES 6 /* max prefixes per opcode */ | |
252b5132 RH |
111 | |
112 | /* we define the syntax here (modulo base,index,scale syntax) */ | |
113 | #define REGISTER_PREFIX '%' | |
114 | #define IMMEDIATE_PREFIX '$' | |
115 | #define ABSOLUTE_PREFIX '*' | |
116 | ||
5ac8f2a2 AS |
117 | /* Byte to use for filling in frag_align_code. */ |
118 | #define NOP_OPCODE (char) 0x90 | |
119 | ||
252b5132 | 120 | /* these are the instruction mnemonic suffixes. */ |
252b5132 RH |
121 | #define WORD_MNEM_SUFFIX 'w' |
122 | #define BYTE_MNEM_SUFFIX 'b' | |
123 | #define SHORT_MNEM_SUFFIX 's' | |
124 | #define LONG_MNEM_SUFFIX 'l' | |
3e73aa7c | 125 | #define QWORD_MNEM_SUFFIX 'q' |
252b5132 RH |
126 | /* Intel Syntax */ |
127 | #define LONG_DOUBLE_MNEM_SUFFIX 'x' | |
252b5132 | 128 | |
252b5132 RH |
129 | #define END_OF_INSN '\0' |
130 | ||
252b5132 RH |
131 | /* |
132 | 'templates' is for grouping together 'template' structures for opcodes | |
133 | of the same name. This is only used for storing the insns in the grand | |
134 | ole hash table of insns. | |
135 | The templates themselves start at START and range up to (but not including) | |
136 | END. | |
137 | */ | |
0b1cf022 | 138 | struct template; |
252b5132 | 139 | |
252b5132 | 140 | typedef struct |
e413e4e9 | 141 | { |
0b1cf022 L |
142 | const struct template *start; |
143 | const struct template *end; | |
e413e4e9 | 144 | } |
0b1cf022 | 145 | templates; |
252b5132 | 146 | |
4a4f25cf | 147 | /* 386 operand encoding bytes: see 386 book for details of this. */ |
252b5132 | 148 | typedef struct |
e413e4e9 AM |
149 | { |
150 | unsigned int regmem; /* codes register or memory operand */ | |
151 | unsigned int reg; /* codes register operand (or extended opcode) */ | |
152 | unsigned int mode; /* how to interpret regmem & reg */ | |
153 | } | |
252b5132 RH |
154 | modrm_byte; |
155 | ||
3e73aa7c | 156 | /* x86-64 extension prefix. */ |
29b0f896 | 157 | typedef int rex_byte; |
3e73aa7c | 158 | |
4a4f25cf | 159 | /* 386 opcode byte to code indirect addressing. */ |
252b5132 | 160 | typedef struct |
e413e4e9 AM |
161 | { |
162 | unsigned base; | |
163 | unsigned index; | |
164 | unsigned scale; | |
165 | } | |
252b5132 RH |
166 | sib_byte; |
167 | ||
9103f4f4 L |
168 | enum processor_type |
169 | { | |
170 | PROCESSOR_UNKNOWN, | |
171 | PROCESSOR_I486, | |
172 | PROCESSOR_PENTIUM, | |
173 | PROCESSOR_PENTIUMPRO, | |
174 | PROCESSOR_PENTIUM4, | |
175 | PROCESSOR_NOCONA, | |
ef05d495 L |
176 | PROCESSOR_CORE, |
177 | PROCESSOR_CORE2, | |
9103f4f4 L |
178 | PROCESSOR_K6, |
179 | PROCESSOR_ATHLON, | |
180 | PROCESSOR_K8, | |
181 | PROCESSOR_GENERIC32, | |
050dfa73 MM |
182 | PROCESSOR_GENERIC64, |
183 | PROCESSOR_AMDFAM10 | |
9103f4f4 L |
184 | }; |
185 | ||
186 | /* x86 arch names, types and features */ | |
e413e4e9 AM |
187 | typedef struct |
188 | { | |
9103f4f4 L |
189 | const char *name; /* arch name */ |
190 | enum processor_type type; /* arch type */ | |
191 | unsigned int flags; /* cpu feature flags */ | |
e413e4e9 AM |
192 | } |
193 | arch_entry; | |
194 | ||
252b5132 | 195 | /* The name of the global offset table generated by the compiler. Allow |
4a4f25cf | 196 | this to be overridden if need be. */ |
252b5132 RH |
197 | #ifndef GLOBAL_OFFSET_TABLE_NAME |
198 | #define GLOBAL_OFFSET_TABLE_NAME "_GLOBAL_OFFSET_TABLE_" | |
199 | #endif | |
200 | ||
718ddfc0 | 201 | #if (defined (OBJ_ELF) || defined (OBJ_MAYBE_ELF)) && !defined (LEX_AT) |
6088b00e | 202 | #define TC_PARSE_CONS_EXPRESSION(EXP, NBYTES) x86_cons (EXP, NBYTES) |
e3bb37b5 | 203 | extern void x86_cons (expressionS *, int); |
d182319b | 204 | #endif |
6088b00e AM |
205 | |
206 | #define TC_CONS_FIX_NEW(FRAG,OFF,LEN,EXP) x86_cons_fix_new(FRAG, OFF, LEN, EXP) | |
207 | extern void x86_cons_fix_new | |
e3bb37b5 | 208 | (fragS *, unsigned int, unsigned int, expressionS *); |
6088b00e AM |
209 | |
210 | #define DIFF_EXPR_OK /* foo-. gets turned into PC relative relocs */ | |
211 | ||
6088b00e AM |
212 | #define NO_RELOC BFD_RELOC_NONE |
213 | ||
e3bb37b5 | 214 | void i386_validate_fix (struct fix *); |
a161fe53 | 215 | #define TC_VALIDATE_FIX(FIX,SEGTYPE,SKIP) i386_validate_fix(FIX) |
6088b00e AM |
216 | |
217 | #define tc_fix_adjustable(X) tc_i386_fix_adjustable(X) | |
e3bb37b5 | 218 | extern int tc_i386_fix_adjustable (struct fix *); |
6088b00e | 219 | |
55cf6793 | 220 | /* Values passed to md_apply_fix don't include the symbol value. */ |
a161fe53 | 221 | #define MD_APPLY_SYM_VALUE(FIX) 0 |
3ca4bdc3 AM |
222 | |
223 | /* ELF wants external syms kept, as does PE COFF. */ | |
ae6063d4 AM |
224 | #if defined (TE_PE) && defined (STRICT_PE_FORMAT) |
225 | #define EXTERN_FORCE_RELOC \ | |
3ca4bdc3 AM |
226 | (OUTPUT_FLAVOR == bfd_target_elf_flavour \ |
227 | || OUTPUT_FLAVOR == bfd_target_coff_flavour) | |
228 | #else | |
229 | #define EXTERN_FORCE_RELOC \ | |
230 | (OUTPUT_FLAVOR == bfd_target_elf_flavour) | |
252b5132 RH |
231 | #endif |
232 | ||
a161fe53 AM |
233 | /* This expression evaluates to true if the relocation is for a local |
234 | object for which we still want to do the relocation at runtime. | |
235 | False if we are willing to perform this relocation while building | |
236 | the .o file. GOTOFF does not need to be checked here because it is | |
237 | not pcrel. I am not sure if some of the others are ever used with | |
6088b00e AM |
238 | pcrel, but it is easier to be safe than sorry. */ |
239 | ||
a161fe53 AM |
240 | #define TC_FORCE_RELOCATION_LOCAL(FIX) \ |
241 | (!(FIX)->fx_pcrel \ | |
a161fe53 AM |
242 | || (FIX)->fx_r_type == BFD_RELOC_386_PLT32 \ |
243 | || (FIX)->fx_r_type == BFD_RELOC_386_GOT32 \ | |
244 | || (FIX)->fx_r_type == BFD_RELOC_386_GOTPC \ | |
245 | || TC_FORCE_RELOCATION (FIX)) | |
6088b00e | 246 | |
4d1bb795 JB |
247 | extern int i386_parse_name (char *, expressionS *, char *); |
248 | #define md_parse_name(s, e, m, c) i386_parse_name (s, e, c) | |
252b5132 RH |
249 | |
250 | extern const struct relax_type md_relax_table[]; | |
251 | #define TC_GENERIC_RELAX_TABLE md_relax_table | |
252 | ||
12b55ccc L |
253 | extern int optimize_align_code; |
254 | ||
252b5132 | 255 | #define md_do_align(n, fill, len, max, around) \ |
12b55ccc L |
256 | if ((n) \ |
257 | && !need_pass_2 \ | |
258 | && optimize_align_code \ | |
259 | && (!(fill) \ | |
260 | || ((char)*(fill) == (char)0x90 && (len) == 1)) \ | |
b9e57a38 | 261 | && subseg_text_p (now_seg)) \ |
252b5132 | 262 | { \ |
0a9ef439 | 263 | frag_align_code ((n), (max)); \ |
252b5132 RH |
264 | goto around; \ |
265 | } | |
266 | ||
0a9ef439 RH |
267 | #define MAX_MEM_FOR_RS_ALIGN_CODE 15 |
268 | ||
e3bb37b5 | 269 | extern void i386_align_code (fragS *, int); |
252b5132 RH |
270 | |
271 | #define HANDLE_ALIGN(fragP) \ | |
272 | if (fragP->fr_type == rs_align_code) \ | |
273 | i386_align_code (fragP, (fragP->fr_next->fr_address \ | |
274 | - fragP->fr_address \ | |
275 | - fragP->fr_fix)); | |
276 | ||
e3bb37b5 | 277 | void i386_print_statistics (FILE *); |
252b5132 RH |
278 | #define tc_print_statistics i386_print_statistics |
279 | ||
280 | #define md_number_to_chars number_to_chars_littleendian | |
281 | ||
282 | #ifdef SCO_ELF | |
283 | #define tc_init_after_args() sco_id () | |
e3bb37b5 | 284 | extern void sco_id (void); |
252b5132 RH |
285 | #endif |
286 | ||
b1b7d09b AM |
287 | #define WORKING_DOT_WORD 1 |
288 | ||
54cfded0 | 289 | /* We want .cfi_* pseudo-ops for generating unwind info. */ |
a4447b93 | 290 | #define TARGET_USE_CFIPOP 1 |
54cfded0 | 291 | |
a4447b93 RH |
292 | extern unsigned int x86_dwarf2_return_column; |
293 | #define DWARF2_DEFAULT_RETURN_COLUMN x86_dwarf2_return_column | |
294 | ||
295 | extern int x86_cie_data_alignment; | |
296 | #define DWARF2_CIE_DATA_ALIGNMENT x86_cie_data_alignment | |
54cfded0 AM |
297 | |
298 | #define tc_regname_to_dw2regnum tc_x86_regname_to_dw2regnum | |
e3bb37b5 | 299 | extern int tc_x86_regname_to_dw2regnum (char *); |
54cfded0 AM |
300 | |
301 | #define tc_cfi_frame_initial_instructions tc_x86_frame_initial_instructions | |
e3bb37b5 | 302 | extern void tc_x86_frame_initial_instructions (void); |
54cfded0 | 303 | |
d2b2c203 | 304 | #define md_elf_section_type(str,len) i386_elf_section_type (str, len) |
e3bb37b5 | 305 | extern int i386_elf_section_type (const char *, size_t); |
d2b2c203 | 306 | |
3b22753a | 307 | /* Support for SHF_X86_64_LARGE */ |
e3bb37b5 L |
308 | extern int x86_64_section_word (char *, size_t); |
309 | extern int x86_64_section_letter (int, char **); | |
3b22753a L |
310 | #define md_elf_section_letter(LETTER, PTR_MSG) x86_64_section_letter (LETTER, PTR_MSG) |
311 | #define md_elf_section_word(STR, LEN) x86_64_section_word (STR, LEN) | |
312 | ||
bb41ade5 AM |
313 | #ifdef TE_PE |
314 | ||
315 | #define O_secrel O_md1 | |
316 | ||
317 | #define TC_DWARF2_EMIT_OFFSET tc_pe_dwarf2_emit_offset | |
318 | void tc_pe_dwarf2_emit_offset (symbolS *, unsigned int); | |
319 | ||
320 | #endif /* TE_PE */ | |
321 | ||
6088b00e | 322 | #endif /* TC_I386 */ |