i386: Align branches within a fixed boundary
[deliverable/binutils-gdb.git] / gas / config / tc-i386.h
CommitLineData
252b5132 1/* tc-i386.h -- Header file for tc-i386.c
82704155 2 Copyright (C) 1989-2019 Free Software Foundation, Inc.
252b5132
RH
3
4 This file is part of GAS, the GNU Assembler.
5
6 GAS is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
ec2655a6 8 the Free Software Foundation; either version 3, or (at your option)
252b5132
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9 any later version.
10
11 GAS is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
15
16 You should have received a copy of the GNU General Public License
17 along with GAS; see the file COPYING. If not, write to the Free
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18 Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA
19 02110-1301, USA. */
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20
21#ifndef TC_I386
22#define TC_I386 1
23
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24#include "opcodes/i386-opc.h"
25
252b5132 26struct fix;
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27
28#define TARGET_BYTES_BIG_ENDIAN 0
29
8a9036a4 30#define TARGET_ARCH (i386_arch ())
b9d79e03 31#define TARGET_MACH (i386_mach ())
8a9036a4 32extern enum bfd_architecture i386_arch (void);
b7c92712 33extern unsigned long i386_mach (void);
252b5132 34
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35#ifdef TE_FreeBSD
36#define AOUT_TARGET_FORMAT "a.out-i386-freebsd"
37#endif
252b5132 38#ifdef TE_NetBSD
4c63da97 39#define AOUT_TARGET_FORMAT "a.out-i386-netbsd"
252b5132
RH
40#endif
41#ifdef TE_386BSD
4c63da97 42#define AOUT_TARGET_FORMAT "a.out-i386-bsd"
252b5132
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43#endif
44#ifdef TE_LINUX
4c63da97 45#define AOUT_TARGET_FORMAT "a.out-i386-linux"
252b5132
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46#endif
47#ifdef TE_Mach
4c63da97 48#define AOUT_TARGET_FORMAT "a.out-mach3"
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49#endif
50#ifdef TE_DYNIX
4c63da97 51#define AOUT_TARGET_FORMAT "a.out-i386-dynix"
252b5132 52#endif
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AM
53#ifndef AOUT_TARGET_FORMAT
54#define AOUT_TARGET_FORMAT "a.out-i386"
252b5132 55#endif
252b5132 56
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57#ifdef TE_FreeBSD
58#define ELF_TARGET_FORMAT "elf32-i386-freebsd"
9d7cbccd 59#define ELF_TARGET_FORMAT64 "elf64-x86-64-freebsd"
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PB
60#elif defined (TE_VXWORKS)
61#define ELF_TARGET_FORMAT "elf32-i386-vxworks"
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62#elif defined (TE_NACL)
63#define ELF_TARGET_FORMAT "elf32-i386-nacl"
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64#define ELF_TARGET_FORMAT32 "elf32-x86-64-nacl"
65#define ELF_TARGET_FORMAT64 "elf64-x86-64-nacl"
12400dcc
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66#elif defined TE_CLOUDABI
67#define ELF_TARGET_FORMAT64 "elf64-x86-64-cloudabi"
4ada7262 68#endif
eac338cf 69
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70#ifdef TE_SOLARIS
71#define ELF_TARGET_FORMAT "elf32-i386-sol2"
72#define ELF_TARGET_FORMAT64 "elf64-x86-64-sol2"
73#endif
74
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75#ifndef ELF_TARGET_FORMAT
76#define ELF_TARGET_FORMAT "elf32-i386"
77#endif
78
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79#ifndef ELF_TARGET_FORMAT64
80#define ELF_TARGET_FORMAT64 "elf64-x86-64"
81#endif
82
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83#ifndef ELF_TARGET_FORMAT32
84#define ELF_TARGET_FORMAT32 "elf32-x86-64"
85#endif
86
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87#ifndef ELF_TARGET_L1OM_FORMAT
88#define ELF_TARGET_L1OM_FORMAT "elf64-l1om"
89#endif
90
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91#ifndef ELF_TARGET_K1OM_FORMAT
92#define ELF_TARGET_K1OM_FORMAT "elf64-k1om"
93#endif
94
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95#ifndef ELF_TARGET_IAMCU_FORMAT
96#define ELF_TARGET_IAMCU_FORMAT "elf32-iamcu"
97#endif
98
3e73aa7c 99#if ((defined (OBJ_MAYBE_COFF) && defined (OBJ_MAYBE_AOUT)) \
321098a5 100 || defined (OBJ_ELF) || defined (OBJ_MAYBE_ELF) \
e57f8c65 101 || defined (TE_PE) || defined (TE_PEP) || defined (OBJ_MACH_O))
e3bb37b5 102extern const char *i386_target_format (void);
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103#define TARGET_FORMAT i386_target_format ()
104#else
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105#ifdef TE_GO32
106#define TARGET_FORMAT "coff-go32"
107#endif
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108#ifdef OBJ_AOUT
109#define TARGET_FORMAT AOUT_TARGET_FORMAT
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110#endif
111#endif
112
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113#define SUB_SEGMENT_ALIGN(SEG, FRCHAIN) 0
114
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115/* '$' may be used as immediate prefix. */
116#undef LOCAL_LABELS_DOLLAR
117#define LOCAL_LABELS_DOLLAR 0
118#undef LOCAL_LABELS_FB
6088b00e 119#define LOCAL_LABELS_FB 1
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120
121extern const char extra_symbol_chars[];
122#define tc_symbol_chars extra_symbol_chars
123
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124extern const char *i386_comment_chars;
125#define tc_comment_chars i386_comment_chars
126
252b5132 127/* The name of the global offset table generated by the compiler. Allow
4a4f25cf 128 this to be overridden if need be. */
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129#ifndef GLOBAL_OFFSET_TABLE_NAME
130#define GLOBAL_OFFSET_TABLE_NAME "_GLOBAL_OFFSET_TABLE_"
131#endif
132
718ddfc0 133#if (defined (OBJ_ELF) || defined (OBJ_MAYBE_ELF)) && !defined (LEX_AT)
6088b00e 134#define TC_PARSE_CONS_EXPRESSION(EXP, NBYTES) x86_cons (EXP, NBYTES)
d182319b 135#endif
62ebcb5c 136extern bfd_reloc_code_real_type x86_cons (expressionS *, int);
6088b00e 137
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138#define TC_CONS_FIX_NEW(FRAG, OFF, LEN, EXP, RELOC) \
139 x86_cons_fix_new(FRAG, OFF, LEN, EXP, RELOC)
6088b00e 140extern void x86_cons_fix_new
62ebcb5c 141(fragS *, unsigned int, unsigned int, expressionS *, bfd_reloc_code_real_type);
6088b00e 142
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143#define TC_ADDRESS_BYTES x86_address_bytes
144extern int x86_address_bytes (void);
145
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146#define DIFF_EXPR_OK /* foo-. gets turned into PC relative relocs */
147
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148#define NO_RELOC BFD_RELOC_NONE
149
e3bb37b5 150void i386_validate_fix (struct fix *);
a161fe53 151#define TC_VALIDATE_FIX(FIX,SEGTYPE,SKIP) i386_validate_fix(FIX)
6088b00e
AM
152
153#define tc_fix_adjustable(X) tc_i386_fix_adjustable(X)
e3bb37b5 154extern int tc_i386_fix_adjustable (struct fix *);
6088b00e 155
55cf6793 156/* Values passed to md_apply_fix don't include the symbol value. */
a161fe53 157#define MD_APPLY_SYM_VALUE(FIX) 0
3ca4bdc3
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158
159/* ELF wants external syms kept, as does PE COFF. */
ae6063d4
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160#if defined (TE_PE) && defined (STRICT_PE_FORMAT)
161#define EXTERN_FORCE_RELOC \
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162 (OUTPUT_FLAVOR == bfd_target_elf_flavour \
163 || OUTPUT_FLAVOR == bfd_target_coff_flavour)
164#else
165#define EXTERN_FORCE_RELOC \
166 (OUTPUT_FLAVOR == bfd_target_elf_flavour)
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167#endif
168
a161fe53
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169/* This expression evaluates to true if the relocation is for a local
170 object for which we still want to do the relocation at runtime.
171 False if we are willing to perform this relocation while building
8d63c93e 172 the .o file. GOTOFF and GOT32 do not need to be checked here because
2a86604a 173 they are not pcrel. .*/
6088b00e 174
56ceb5b5 175#define TC_FORCE_RELOCATION_LOCAL(FIX) \
91cb9803 176 (GENERIC_FORCE_RELOCATION_LOCAL (FIX) \
56ceb5b5
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177 || (FIX)->fx_r_type == BFD_RELOC_386_PLT32 \
178 || (FIX)->fx_r_type == BFD_RELOC_386_GOTPC \
9f52eab6 179 || (FIX)->fx_r_type == BFD_RELOC_X86_64_GOTPCREL \
56ceb5b5 180 || (FIX)->fx_r_type == BFD_RELOC_X86_64_GOTPCRELX \
91cb9803 181 || (FIX)->fx_r_type == BFD_RELOC_X86_64_REX_GOTPCRELX)
6088b00e 182
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183extern int i386_parse_name (char *, expressionS *, char *);
184#define md_parse_name(s, e, m, c) i386_parse_name (s, e, c)
252b5132 185
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186extern operatorT i386_operator (const char *name, unsigned int operands, char *);
187#define md_operator i386_operator
188
189extern int i386_need_index_operator (void);
190#define md_need_index_operator i386_need_index_operator
191
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192#define md_register_arithmetic 0
193
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194extern const struct relax_type md_relax_table[];
195#define TC_GENERIC_RELAX_TABLE md_relax_table
196
12b55ccc
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197extern int optimize_align_code;
198
252b5132 199#define md_do_align(n, fill, len, max, around) \
12b55ccc
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200if ((n) \
201 && !need_pass_2 \
202 && optimize_align_code \
203 && (!(fill) \
204 || ((char)*(fill) == (char)0x90 && (len) == 1)) \
b9e57a38 205 && subseg_text_p (now_seg)) \
252b5132 206 { \
0a9ef439 207 frag_align_code ((n), (max)); \
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208 goto around; \
209 }
210
db222310 211#define MAX_MEM_FOR_RS_ALIGN_CODE (alignment ? ((1 << alignment) - 1) : 1)
252b5132 212
e379e5f3
L
213extern void i386_cons_align (int);
214#define md_cons_align(nbytes) i386_cons_align (nbytes)
215
e3bb37b5 216void i386_print_statistics (FILE *);
252b5132
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217#define tc_print_statistics i386_print_statistics
218
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219extern unsigned int i386_frag_max_var (fragS *);
220#define md_frag_max_var i386_frag_max_var
221
e379e5f3
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222extern long i386_generic_table_relax_frag (segT, fragS *, long);
223#define md_generic_table_relax_frag(segment, fragP, stretch) \
224 i386_generic_table_relax_frag (segment, fragP, stretch)
225
252b5132
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226#define md_number_to_chars number_to_chars_littleendian
227
fbf3f584
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228enum processor_type
229{
230 PROCESSOR_UNKNOWN,
231 PROCESSOR_I386,
232 PROCESSOR_I486,
233 PROCESSOR_PENTIUM,
234 PROCESSOR_PENTIUMPRO,
235 PROCESSOR_PENTIUM4,
236 PROCESSOR_NOCONA,
237 PROCESSOR_CORE,
238 PROCESSOR_CORE2,
bd5295b2 239 PROCESSOR_COREI7,
3632d14b 240 PROCESSOR_L1OM,
7a9068fe 241 PROCESSOR_K1OM,
81486035 242 PROCESSOR_IAMCU,
fbf3f584
L
243 PROCESSOR_K6,
244 PROCESSOR_ATHLON,
245 PROCESSOR_K8,
246 PROCESSOR_GENERIC32,
247 PROCESSOR_GENERIC64,
69dd9865 248 PROCESSOR_AMDFAM10,
7b458c12 249 PROCESSOR_BD,
029f3522 250 PROCESSOR_ZNVER,
7b458c12 251 PROCESSOR_BT
fbf3f584
L
252};
253
254extern enum processor_type cpu_arch_tune;
255extern enum processor_type cpu_arch_isa;
256extern i386_cpu_flags cpu_arch_isa_flags;
257
258struct i386_tc_frag_data
259{
e379e5f3
L
260 union
261 {
262 fragS *padding_fragP;
263 fragS *branch_fragP;
264 } u;
265 addressT padding_address;
fbf3f584
L
266 enum processor_type isa;
267 i386_cpu_flags isa_flags;
268 enum processor_type tune;
db222310 269 unsigned int max_bytes;
e379e5f3
L
270 unsigned char length;
271 unsigned char last_length;
272 unsigned char max_prefix_length;
273 unsigned char prefix_length;
274 unsigned char default_prefix;
275 unsigned char cmp_size;
276 unsigned int classified : 1;
277 unsigned int branch_type : 3;
fbf3f584
L
278};
279
280/* We need to emit the right NOP pattern in .align frags. This is
281 done after the text-to-bits assembly pass, so we need to mark it with
282 the isa/tune settings at the time the .align was assembled. */
283#define TC_FRAG_TYPE struct i386_tc_frag_data
284
db222310 285#define TC_FRAG_INIT(FRAGP, MAX_BYTES) \
fbf3f584
L
286 do \
287 { \
e379e5f3
L
288 (FRAGP)->tc_frag_data.u.padding_fragP = NULL; \
289 (FRAGP)->tc_frag_data.padding_address = 0; \
fbf3f584
L
290 (FRAGP)->tc_frag_data.isa = cpu_arch_isa; \
291 (FRAGP)->tc_frag_data.isa_flags = cpu_arch_isa_flags; \
292 (FRAGP)->tc_frag_data.tune = cpu_arch_tune; \
db222310 293 (FRAGP)->tc_frag_data.max_bytes = (MAX_BYTES); \
e379e5f3
L
294 (FRAGP)->tc_frag_data.length = 0; \
295 (FRAGP)->tc_frag_data.last_length = 0; \
296 (FRAGP)->tc_frag_data.max_prefix_length = 0; \
297 (FRAGP)->tc_frag_data.prefix_length = 0; \
298 (FRAGP)->tc_frag_data.default_prefix = 0; \
299 (FRAGP)->tc_frag_data.cmp_size = 0; \
300 (FRAGP)->tc_frag_data.classified = 0; \
301 (FRAGP)->tc_frag_data.branch_type = 0; \
fbf3f584
L
302 } \
303 while (0)
304
b1b7d09b
AM
305#define WORKING_DOT_WORD 1
306
62a02d25
L
307/* How to generate NOPs for .nop direct directive. */
308extern void i386_generate_nops (fragS *, char *, offsetT, int);
309#define md_generate_nops(frag, where, amount, control) \
310 i386_generate_nops ((frag), (where), (amount), (control))
311
3ae729d5
L
312#define HANDLE_ALIGN(fragP) \
313if (fragP->fr_type == rs_align_code) \
314 { \
315 offsetT __count = (fragP->fr_next->fr_address \
316 - fragP->fr_address \
317 - fragP->fr_fix); \
db222310
L
318 if (__count > 0 \
319 && (unsigned int) __count <= fragP->tc_frag_data.max_bytes) \
3ae729d5
L
320 md_generate_nops (fragP, fragP->fr_literal + fragP->fr_fix, \
321 __count, 0); \
322 }
323
54cfded0 324/* We want .cfi_* pseudo-ops for generating unwind info. */
a4447b93 325#define TARGET_USE_CFIPOP 1
54cfded0 326
a4447b93
RH
327extern unsigned int x86_dwarf2_return_column;
328#define DWARF2_DEFAULT_RETURN_COLUMN x86_dwarf2_return_column
329
330extern int x86_cie_data_alignment;
331#define DWARF2_CIE_DATA_ALIGNMENT x86_cie_data_alignment
54cfded0 332
d7921315
L
333extern int x86_dwarf2_addr_size (void);
334#define DWARF2_ADDR_SIZE(bfd) x86_dwarf2_addr_size ()
335
a60de03c
JB
336#define tc_parse_to_dw2regnum tc_x86_parse_to_dw2regnum
337extern void tc_x86_parse_to_dw2regnum (expressionS *);
54cfded0
AM
338
339#define tc_cfi_frame_initial_instructions tc_x86_frame_initial_instructions
e3bb37b5 340extern void tc_x86_frame_initial_instructions (void);
54cfded0 341
d2b2c203 342#define md_elf_section_type(str,len) i386_elf_section_type (str, len)
e3bb37b5 343extern int i386_elf_section_type (const char *, size_t);
d2b2c203 344
ad5fec3b
EB
345#ifdef TE_SOLARIS
346#define md_fix_up_eh_frame(sec) i386_solaris_fix_up_eh_frame (sec)
347extern void i386_solaris_fix_up_eh_frame (segT);
348#endif
349
3b22753a 350/* Support for SHF_X86_64_LARGE */
01e1a5bc 351extern bfd_vma x86_64_section_word (char *, size_t);
6d4af3c2 352extern bfd_vma x86_64_section_letter (int, const char **);
3b22753a
L
353#define md_elf_section_letter(LETTER, PTR_MSG) x86_64_section_letter (LETTER, PTR_MSG)
354#define md_elf_section_word(STR, LEN) x86_64_section_word (STR, LEN)
355
b4a3a7b4
L
356#if defined (OBJ_ELF) || defined (OBJ_MAYBE_ELF)
357extern void x86_cleanup (void);
358#define md_cleanup() x86_cleanup ()
359#endif
360
bb41ade5
AM
361#ifdef TE_PE
362
363#define O_secrel O_md1
364
365#define TC_DWARF2_EMIT_OFFSET tc_pe_dwarf2_emit_offset
366void tc_pe_dwarf2_emit_offset (symbolS *, unsigned int);
367
368#endif /* TE_PE */
369
ee86248c
JB
370/* X_add_symbol:X_op_symbol (Intel mode only) */
371#define O_full_ptr O_md2
372
cdaa5616
IS
373#ifdef OBJ_MACH_O
374
375#define TC_FORCE_RELOCATION(FIX) (obj_mach_o_force_reloc (FIX))
376
377#define TC_FORCE_RELOCATION_SUB_SAME(FIX,SEG) \
378 (obj_mach_o_force_reloc_sub_same (FIX, SEG))
379
380#define TC_FORCE_RELOCATION_SUB_LOCAL(FIX,SEG) \
381 (obj_mach_o_force_reloc_sub_local (FIX, SEG))
382
383#define TC_VALIDATE_FIX_SUB(FIX, SEG) 1
384
385#endif /* OBJ_MACH_O */
386
6088b00e 387#endif /* TC_I386 */
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