[deliverable/binutils-gdb.git] / gas / config / tc-i386.h

/* tc-i386.h -- Header file for tc-i386.c
   Copyright 1989, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000,
   2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008
   Free Software Foundation, Inc.

   This file is part of GAS, the GNU Assembler.

   GAS is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 3, or (at your option)
   any later version.

   GAS is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with GAS; see the file COPYING.  If not, write to the Free
   Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA
   02110-1301, USA.  */

#ifndef TC_I386
#define TC_I386 1

#include "opcodes/i386-opc.h"

struct fix;

#define TARGET_BYTES_BIG_ENDIAN	0

#define TARGET_ARCH		bfd_arch_i386
#define TARGET_MACH		(i386_mach ())
extern unsigned long i386_mach (void);

#ifdef TE_FreeBSD
#define AOUT_TARGET_FORMAT	"a.out-i386-freebsd"
#endif
#ifdef TE_NetBSD
#define AOUT_TARGET_FORMAT	"a.out-i386-netbsd"
#endif
#ifdef TE_386BSD
#define AOUT_TARGET_FORMAT	"a.out-i386-bsd"
#endif
#ifdef TE_LINUX
#define AOUT_TARGET_FORMAT	"a.out-i386-linux"
#endif
#ifdef TE_Mach
#define AOUT_TARGET_FORMAT	"a.out-mach3"
#endif
#ifdef TE_DYNIX
#define AOUT_TARGET_FORMAT	"a.out-i386-dynix"
#endif
#ifndef AOUT_TARGET_FORMAT
#define AOUT_TARGET_FORMAT	"a.out-i386"
#endif

#ifdef TE_FreeBSD
#define ELF_TARGET_FORMAT	"elf32-i386-freebsd"
#define ELF_TARGET_FORMAT64	"elf64-x86-64-freebsd"
#elif defined (TE_VXWORKS)
#define ELF_TARGET_FORMAT	"elf32-i386-vxworks"
#endif

#ifndef ELF_TARGET_FORMAT
#define ELF_TARGET_FORMAT	"elf32-i386"
#endif

#ifndef ELF_TARGET_FORMAT64
#define ELF_TARGET_FORMAT64	"elf64-x86-64"
#endif

#if ((defined (OBJ_MAYBE_COFF) && defined (OBJ_MAYBE_AOUT)) \
     || defined (OBJ_ELF) || defined (OBJ_MAYBE_ELF))
extern const char *i386_target_format (void);
#define TARGET_FORMAT i386_target_format ()
#else
#ifdef OBJ_ELF
#define TARGET_FORMAT		ELF_TARGET_FORMAT
#endif
#ifdef OBJ_AOUT
#define TARGET_FORMAT		AOUT_TARGET_FORMAT
#endif
#endif

#if (defined (OBJ_MAYBE_ELF) || defined (OBJ_ELF))
#define md_end i386_elf_emit_arch_note
extern void i386_elf_emit_arch_note (void);
#endif

#define SUB_SEGMENT_ALIGN(SEG, FRCHAIN) 0

/* '$' may be used as immediate prefix.  */
#undef LOCAL_LABELS_DOLLAR
#define LOCAL_LABELS_DOLLAR 0
#undef LOCAL_LABELS_FB
#define LOCAL_LABELS_FB 1

extern const char extra_symbol_chars[];
#define tc_symbol_chars extra_symbol_chars

extern const char *i386_comment_chars;
#define tc_comment_chars i386_comment_chars

/* The name of the global offset table generated by the compiler. Allow
   this to be overridden if need be.  */
#ifndef GLOBAL_OFFSET_TABLE_NAME
#define GLOBAL_OFFSET_TABLE_NAME "_GLOBAL_OFFSET_TABLE_"
#endif

#if (defined (OBJ_ELF) || defined (OBJ_MAYBE_ELF)) && !defined (LEX_AT)
#define TC_PARSE_CONS_EXPRESSION(EXP, NBYTES) x86_cons (EXP, NBYTES)
extern void x86_cons (expressionS *, int);
#endif

#define TC_CONS_FIX_NEW(FRAG,OFF,LEN,EXP) x86_cons_fix_new(FRAG, OFF, LEN, EXP)
extern void x86_cons_fix_new
  (fragS *, unsigned int, unsigned int, expressionS *);

#define DIFF_EXPR_OK    /* foo-. gets turned into PC relative relocs */

#define NO_RELOC BFD_RELOC_NONE

void i386_validate_fix (struct fix *);
#define TC_VALIDATE_FIX(FIX,SEGTYPE,SKIP) i386_validate_fix(FIX)

#define tc_fix_adjustable(X)  tc_i386_fix_adjustable(X)
extern int tc_i386_fix_adjustable (struct fix *);

/* Values passed to md_apply_fix don't include the symbol value.  */
#define MD_APPLY_SYM_VALUE(FIX) 0

/* ELF wants external syms kept, as does PE COFF.  */
#if defined (TE_PE) && defined (STRICT_PE_FORMAT)
#define EXTERN_FORCE_RELOC				\
  (OUTPUT_FLAVOR == bfd_target_elf_flavour		\
   || OUTPUT_FLAVOR == bfd_target_coff_flavour)
#else
#define EXTERN_FORCE_RELOC				\
  (OUTPUT_FLAVOR == bfd_target_elf_flavour)
#endif

/* This expression evaluates to true if the relocation is for a local
   object for which we still want to do the relocation at runtime.
   False if we are willing to perform this relocation while building
   the .o file.  GOTOFF does not need to be checked here because it is
   not pcrel.  I am not sure if some of the others are ever used with
   pcrel, but it is easier to be safe than sorry.  */

#define TC_FORCE_RELOCATION_LOCAL(FIX)			\
  (!(FIX)->fx_pcrel					\
   || (FIX)->fx_r_type == BFD_RELOC_386_PLT32		\
   || (FIX)->fx_r_type == BFD_RELOC_386_GOT32		\
   || (FIX)->fx_r_type == BFD_RELOC_386_GOTPC		\
   || TC_FORCE_RELOCATION (FIX))

extern int i386_parse_name (char *, expressionS *, char *);
#define md_parse_name(s, e, m, c) i386_parse_name (s, e, c)

extern operatorT i386_operator (const char *name, unsigned int operands, char *);
#define md_operator i386_operator

extern int i386_need_index_operator (void);
#define md_need_index_operator i386_need_index_operator

#define md_register_arithmetic 0

extern const struct relax_type md_relax_table[];
#define TC_GENERIC_RELAX_TABLE md_relax_table

extern int optimize_align_code;

#define md_do_align(n, fill, len, max, around)				\
if ((n)									\
    && !need_pass_2							\
    && optimize_align_code						\
    && (!(fill)								\
	|| ((char)*(fill) == (char)0x90 && (len) == 1))			\
    && subseg_text_p (now_seg))						\
  {									\
    frag_align_code ((n), (max));					\
    goto around;							\
  }

#define MAX_MEM_FOR_RS_ALIGN_CODE  31

extern void i386_align_code (fragS *, int);

#define HANDLE_ALIGN(fragP)						\
if (fragP->fr_type == rs_align_code) 					\
  i386_align_code (fragP, (fragP->fr_next->fr_address			\
			   - fragP->fr_address				\
			   - fragP->fr_fix));

void i386_print_statistics (FILE *);
#define tc_print_statistics i386_print_statistics

#define md_number_to_chars number_to_chars_littleendian

enum processor_type
{
  PROCESSOR_UNKNOWN,
  PROCESSOR_I386,
  PROCESSOR_I486,
  PROCESSOR_PENTIUM,
  PROCESSOR_PENTIUMPRO,
  PROCESSOR_PENTIUM4,
  PROCESSOR_NOCONA,
  PROCESSOR_CORE,
  PROCESSOR_CORE2,
  PROCESSOR_COREI7,
  PROCESSOR_K6,
  PROCESSOR_ATHLON,
  PROCESSOR_K8,
  PROCESSOR_GENERIC32,
  PROCESSOR_GENERIC64,
  PROCESSOR_AMDFAM10
};

extern enum processor_type cpu_arch_tune;
extern enum processor_type cpu_arch_isa;
extern i386_cpu_flags cpu_arch_isa_flags;

struct i386_tc_frag_data
{
  enum processor_type isa;
  i386_cpu_flags isa_flags;
  enum processor_type tune;
};

/* We need to emit the right NOP pattern in .align frags.  This is
   done after the text-to-bits assembly pass, so we need to mark it with
   the isa/tune settings at the time the .align was assembled.  */
#define TC_FRAG_TYPE struct i386_tc_frag_data

#define TC_FRAG_INIT(FRAGP)					\
 do								\
   {								\
     (FRAGP)->tc_frag_data.isa = cpu_arch_isa;			\
     (FRAGP)->tc_frag_data.isa_flags = cpu_arch_isa_flags;	\
     (FRAGP)->tc_frag_data.tune = cpu_arch_tune;		\
   }								\
 while (0)

#ifdef SCO_ELF
#define tc_init_after_args() sco_id ()
extern void sco_id (void);
#endif

#define WORKING_DOT_WORD 1

/* We want .cfi_* pseudo-ops for generating unwind info.  */
#define TARGET_USE_CFIPOP 1

extern unsigned int x86_dwarf2_return_column;
#define DWARF2_DEFAULT_RETURN_COLUMN x86_dwarf2_return_column

extern int x86_cie_data_alignment;
#define DWARF2_CIE_DATA_ALIGNMENT x86_cie_data_alignment

#define tc_parse_to_dw2regnum tc_x86_parse_to_dw2regnum
extern void tc_x86_parse_to_dw2regnum (expressionS *);

#define tc_cfi_frame_initial_instructions tc_x86_frame_initial_instructions
extern void tc_x86_frame_initial_instructions (void);

#define md_elf_section_type(str,len) i386_elf_section_type (str, len)
extern int i386_elf_section_type (const char *, size_t);

#ifdef TE_SOLARIS
#define md_fix_up_eh_frame(sec) i386_solaris_fix_up_eh_frame (sec)
extern void i386_solaris_fix_up_eh_frame (segT);
#endif

/* Support for SHF_X86_64_LARGE */
extern bfd_vma x86_64_section_word (char *, size_t);
extern bfd_vma x86_64_section_letter (int, char **);
#define md_elf_section_letter(LETTER, PTR_MSG)	x86_64_section_letter (LETTER, PTR_MSG)
#define md_elf_section_word(STR, LEN)		x86_64_section_word (STR, LEN)

#ifdef TE_PE

#define O_secrel O_md1

#define TC_DWARF2_EMIT_OFFSET  tc_pe_dwarf2_emit_offset
void tc_pe_dwarf2_emit_offset (symbolS *, unsigned int);

#endif /* TE_PE */

/* X_add_symbol:X_op_symbol (Intel mode only) */
#define O_full_ptr O_md2

#endif /* TC_I386 */
Commit	Line	Data
	1	/* tc-i386.h -- Header file for tc-i386.c
	2	Copyright 1989, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000,
	3	2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008
	4	Free Software Foundation, Inc.
	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 3, 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
	20	Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA
	21	02110-1301, USA. */
	22
	23	#ifndef TC_I386
	24	#define TC_I386 1
	25
	26	#include "opcodes/i386-opc.h"
	27
	28	struct fix;
	29
	30	#define TARGET_BYTES_BIG_ENDIAN 0
	31
	32	#define TARGET_ARCH bfd_arch_i386
	33	#define TARGET_MACH (i386_mach ())
	34	extern unsigned long i386_mach (void);
	35
	36	#ifdef TE_FreeBSD
	37	#define AOUT_TARGET_FORMAT "a.out-i386-freebsd"
	38	#endif
	39	#ifdef TE_NetBSD
	40	#define AOUT_TARGET_FORMAT "a.out-i386-netbsd"
	41	#endif
	42	#ifdef TE_386BSD
	43	#define AOUT_TARGET_FORMAT "a.out-i386-bsd"
	44	#endif
	45	#ifdef TE_LINUX
	46	#define AOUT_TARGET_FORMAT "a.out-i386-linux"
	47	#endif
	48	#ifdef TE_Mach
	49	#define AOUT_TARGET_FORMAT "a.out-mach3"
	50	#endif
	51	#ifdef TE_DYNIX
	52	#define AOUT_TARGET_FORMAT "a.out-i386-dynix"
	53	#endif
	54	#ifndef AOUT_TARGET_FORMAT
	55	#define AOUT_TARGET_FORMAT "a.out-i386"
	56	#endif
	57
	58	#ifdef TE_FreeBSD
	59	#define ELF_TARGET_FORMAT "elf32-i386-freebsd"
	60	#define ELF_TARGET_FORMAT64 "elf64-x86-64-freebsd"
	61	#elif defined (TE_VXWORKS)
	62	#define ELF_TARGET_FORMAT "elf32-i386-vxworks"
	63	#endif
	64
	65	#ifndef ELF_TARGET_FORMAT
	66	#define ELF_TARGET_FORMAT "elf32-i386"
	67	#endif
	68
	69	#ifndef ELF_TARGET_FORMAT64
	70	#define ELF_TARGET_FORMAT64 "elf64-x86-64"
	71	#endif
	72
	73	#if ((defined (OBJ_MAYBE_COFF) && defined (OBJ_MAYBE_AOUT)) \
	74	\|\| defined (OBJ_ELF) \|\| defined (OBJ_MAYBE_ELF))
	75	extern const char *i386_target_format (void);
	76	#define TARGET_FORMAT i386_target_format ()
	77	#else
	78	#ifdef OBJ_ELF
	79	#define TARGET_FORMAT ELF_TARGET_FORMAT
	80	#endif
	81	#ifdef OBJ_AOUT
	82	#define TARGET_FORMAT AOUT_TARGET_FORMAT
	83	#endif
	84	#endif
	85
	86	#if (defined (OBJ_MAYBE_ELF) \|\| defined (OBJ_ELF))
	87	#define md_end i386_elf_emit_arch_note
	88	extern void i386_elf_emit_arch_note (void);
	89	#endif
	90
	91	#define SUB_SEGMENT_ALIGN(SEG, FRCHAIN) 0
	92
	93	/* '$' may be used as immediate prefix. */
	94	#undef LOCAL_LABELS_DOLLAR
	95	#define LOCAL_LABELS_DOLLAR 0
	96	#undef LOCAL_LABELS_FB
	97	#define LOCAL_LABELS_FB 1
	98
	99	extern const char extra_symbol_chars[];
	100	#define tc_symbol_chars extra_symbol_chars
	101
	102	extern const char *i386_comment_chars;
	103	#define tc_comment_chars i386_comment_chars
	104
	105	/* The name of the global offset table generated by the compiler. Allow
	106	this to be overridden if need be. */
	107	#ifndef GLOBAL_OFFSET_TABLE_NAME
	108	#define GLOBAL_OFFSET_TABLE_NAME "_GLOBAL_OFFSET_TABLE_"
	109	#endif
	110
	111	#if (defined (OBJ_ELF) \|\| defined (OBJ_MAYBE_ELF)) && !defined (LEX_AT)
	112	#define TC_PARSE_CONS_EXPRESSION(EXP, NBYTES) x86_cons (EXP, NBYTES)
	113	extern void x86_cons (expressionS *, int);
	114	#endif
	115
	116	#define TC_CONS_FIX_NEW(FRAG,OFF,LEN,EXP) x86_cons_fix_new(FRAG, OFF, LEN, EXP)
	117	extern void x86_cons_fix_new
	118	(fragS , unsigned int, unsigned int, expressionS );
	119
	120	#define DIFF_EXPR_OK /* foo-. gets turned into PC relative relocs */
	121
	122	#define NO_RELOC BFD_RELOC_NONE
	123
	124	void i386_validate_fix (struct fix *);
	125	#define TC_VALIDATE_FIX(FIX,SEGTYPE,SKIP) i386_validate_fix(FIX)
	126
	127	#define tc_fix_adjustable(X) tc_i386_fix_adjustable(X)
	128	extern int tc_i386_fix_adjustable (struct fix *);
	129
	130	/* Values passed to md_apply_fix don't include the symbol value. */
	131	#define MD_APPLY_SYM_VALUE(FIX) 0
	132
	133	/* ELF wants external syms kept, as does PE COFF. */
	134	#if defined (TE_PE) && defined (STRICT_PE_FORMAT)
	135	#define EXTERN_FORCE_RELOC \
	136	(OUTPUT_FLAVOR == bfd_target_elf_flavour \
	137	\|\| OUTPUT_FLAVOR == bfd_target_coff_flavour)
	138	#else
	139	#define EXTERN_FORCE_RELOC \
	140	(OUTPUT_FLAVOR == bfd_target_elf_flavour)
	141	#endif
	142
	143	/* This expression evaluates to true if the relocation is for a local
	144	object for which we still want to do the relocation at runtime.
	145	False if we are willing to perform this relocation while building
	146	the .o file. GOTOFF does not need to be checked here because it is
	147	not pcrel. I am not sure if some of the others are ever used with
	148	pcrel, but it is easier to be safe than sorry. */
	149
	150	#define TC_FORCE_RELOCATION_LOCAL(FIX) \
	151	(!(FIX)->fx_pcrel \
	152	\|\| (FIX)->fx_r_type == BFD_RELOC_386_PLT32 \
	153	\|\| (FIX)->fx_r_type == BFD_RELOC_386_GOT32 \
	154	\|\| (FIX)->fx_r_type == BFD_RELOC_386_GOTPC \
	155	\|\| TC_FORCE_RELOCATION (FIX))
	156
	157	extern int i386_parse_name (char , expressionS , char *);
	158	#define md_parse_name(s, e, m, c) i386_parse_name (s, e, c)
	159
	160	extern operatorT i386_operator (const char name, unsigned int operands, char );
	161	#define md_operator i386_operator
	162
	163	extern int i386_need_index_operator (void);
	164	#define md_need_index_operator i386_need_index_operator
	165
	166	#define md_register_arithmetic 0
	167
	168	extern const struct relax_type md_relax_table[];
	169	#define TC_GENERIC_RELAX_TABLE md_relax_table
	170
	171	extern int optimize_align_code;
	172
	173	#define md_do_align(n, fill, len, max, around) \
	174	if ((n) \
	175	&& !need_pass_2 \
	176	&& optimize_align_code \
	177	&& (!(fill) \
	178	\|\| ((char)*(fill) == (char)0x90 && (len) == 1)) \
	179	&& subseg_text_p (now_seg)) \
	180	{ \
	181	frag_align_code ((n), (max)); \
	182	goto around; \
	183	}
	184
	185	#define MAX_MEM_FOR_RS_ALIGN_CODE 31
	186
	187	extern void i386_align_code (fragS *, int);
	188
	189	#define HANDLE_ALIGN(fragP) \
	190	if (fragP->fr_type == rs_align_code) \
	191	i386_align_code (fragP, (fragP->fr_next->fr_address \
	192	- fragP->fr_address \
	193	- fragP->fr_fix));
	194
	195	void i386_print_statistics (FILE *);
	196	#define tc_print_statistics i386_print_statistics
	197
	198	#define md_number_to_chars number_to_chars_littleendian
	199
	200	enum processor_type
	201	{
	202	PROCESSOR_UNKNOWN,
	203	PROCESSOR_I386,
	204	PROCESSOR_I486,
	205	PROCESSOR_PENTIUM,
	206	PROCESSOR_PENTIUMPRO,
	207	PROCESSOR_PENTIUM4,
	208	PROCESSOR_NOCONA,
	209	PROCESSOR_CORE,
	210	PROCESSOR_CORE2,
	211	PROCESSOR_COREI7,
	212	PROCESSOR_K6,
	213	PROCESSOR_ATHLON,
	214	PROCESSOR_K8,
	215	PROCESSOR_GENERIC32,
	216	PROCESSOR_GENERIC64,
	217	PROCESSOR_AMDFAM10
	218	};
	219
	220	extern enum processor_type cpu_arch_tune;
	221	extern enum processor_type cpu_arch_isa;
	222	extern i386_cpu_flags cpu_arch_isa_flags;
	223
	224	struct i386_tc_frag_data
	225	{
	226	enum processor_type isa;
	227	i386_cpu_flags isa_flags;
	228	enum processor_type tune;
	229	};
	230
	231	/* We need to emit the right NOP pattern in .align frags. This is
	232	done after the text-to-bits assembly pass, so we need to mark it with
	233	the isa/tune settings at the time the .align was assembled. */
	234	#define TC_FRAG_TYPE struct i386_tc_frag_data
	235
	236	#define TC_FRAG_INIT(FRAGP) \
	237	do \
	238	{ \
	239	(FRAGP)->tc_frag_data.isa = cpu_arch_isa; \
	240	(FRAGP)->tc_frag_data.isa_flags = cpu_arch_isa_flags; \
	241	(FRAGP)->tc_frag_data.tune = cpu_arch_tune; \
	242	} \
	243	while (0)
	244
	245	#ifdef SCO_ELF
	246	#define tc_init_after_args() sco_id ()
	247	extern void sco_id (void);
	248	#endif
	249
	250	#define WORKING_DOT_WORD 1
	251
	252	/* We want .cfi_* pseudo-ops for generating unwind info. */
	253	#define TARGET_USE_CFIPOP 1
	254
	255	extern unsigned int x86_dwarf2_return_column;
	256	#define DWARF2_DEFAULT_RETURN_COLUMN x86_dwarf2_return_column
	257
	258	extern int x86_cie_data_alignment;
	259	#define DWARF2_CIE_DATA_ALIGNMENT x86_cie_data_alignment
	260
	261	#define tc_parse_to_dw2regnum tc_x86_parse_to_dw2regnum
	262	extern void tc_x86_parse_to_dw2regnum (expressionS *);
	263
	264	#define tc_cfi_frame_initial_instructions tc_x86_frame_initial_instructions
	265	extern void tc_x86_frame_initial_instructions (void);
	266
	267	#define md_elf_section_type(str,len) i386_elf_section_type (str, len)
	268	extern int i386_elf_section_type (const char *, size_t);
	269
	270	#ifdef TE_SOLARIS
	271	#define md_fix_up_eh_frame(sec) i386_solaris_fix_up_eh_frame (sec)
	272	extern void i386_solaris_fix_up_eh_frame (segT);
	273	#endif
	274
	275	/* Support for SHF_X86_64_LARGE */
	276	extern bfd_vma x86_64_section_word (char *, size_t);
	277	extern bfd_vma x86_64_section_letter (int, char **);
	278	#define md_elf_section_letter(LETTER, PTR_MSG) x86_64_section_letter (LETTER, PTR_MSG)
	279	#define md_elf_section_word(STR, LEN) x86_64_section_word (STR, LEN)
	280
	281	#ifdef TE_PE
	282
	283	#define O_secrel O_md1
	284
	285	#define TC_DWARF2_EMIT_OFFSET tc_pe_dwarf2_emit_offset
	286	void tc_pe_dwarf2_emit_offset (symbolS *, unsigned int);
	287
	288	#endif /* TE_PE */
	289
	290	/* X_add_symbol:X_op_symbol (Intel mode only) */
	291	#define O_full_ptr O_md2
	292
	293	#endif /* TC_I386 */