X-Git-Url: http://drtracing.org/?a=blobdiff_plain;f=gas%2Fconfig%2Ftc-i386.h;h=3b377cc39df0364209dc9eebc6fcec92288840aa;hb=9306ca4a205ea71479693f53f777ab04f55b4d49;hp=a68d5e49267f589a321c026e560cf367a9297b49;hpb=cac5b87b93dc989b1d6c0db9e0c916b7fd8b29d6;p=deliverable%2Fbinutils-gdb.git diff --git a/gas/config/tc-i386.h b/gas/config/tc-i386.h index a68d5e4926..3b377cc39d 100644 --- a/gas/config/tc-i386.h +++ b/gas/config/tc-i386.h @@ -1,6 +1,7 @@ /* tc-i386.h -- Header file for tc-i386.c - Copyright (C) 1989, 92, 93, 94, 95, 96, 97, 98, 99, 2000, 2001 - Free Software Foundation. + Copyright 1989, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, + 2001, 2002, 2003, 2004 + Free Software Foundation, Inc. This file is part of GAS, the GNU Assembler. @@ -22,58 +23,19 @@ #ifndef TC_I386 #define TC_I386 1 +#ifndef BFD_ASSEMBLER +#error So, do you know what you are doing? +#endif + #ifdef ANSI_PROTOTYPES struct fix; #endif #define TARGET_BYTES_BIG_ENDIAN 0 -#ifdef TE_LYNX -#define TARGET_FORMAT "coff-i386-lynx" -#endif - -#ifdef BFD_ASSEMBLER -/* This is used to determine relocation types in tc-i386.c. The first - parameter is the current relocation type, the second one is the desired - type. The idea is that if the original type is already some kind of PIC - relocation, we leave it alone, otherwise we give it the desired type */ - -#define tc_fix_adjustable(X) tc_i386_fix_adjustable(X) -extern int tc_i386_fix_adjustable PARAMS ((struct fix *)); - -#if (defined (OBJ_MAYBE_ELF) || defined (OBJ_ELF) || defined (OBJ_MAYBE_COFF) || defined (OBJ_COFF)) && !defined (TE_PE) -/* This arranges for gas/write.c to not apply a relocation if - tc_fix_adjustable() says it is not adjustable. - The "! symbol_used_in_reloc_p" test is there specifically to cover - the case of non-global symbols in linkonce sections. It's the - generally correct thing to do though; If a reloc is going to be - emitted against a symbol then we don't want to adjust the fixup by - applying the reloc during assembly. The reloc will be applied by - the linker during final link. */ -#define TC_FIX_ADJUSTABLE(fixP) \ - (! symbol_used_in_reloc_p ((fixP)->fx_addsy) && tc_fix_adjustable (fixP)) -#endif - -/* This expression evaluates to false if the relocation is for a local object - for which we still want to do the relocation at runtime. True if we - are willing to perform this relocation while building the .o file. - This is only used for pcrel relocations, so GOTOFF does not need to be - checked here. 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_RELOC_RTSYM_LOC_FIXUP(FIX) \ - ((FIX)->fx_r_type != BFD_RELOC_386_PLT32 \ - && (FIX)->fx_r_type != BFD_RELOC_386_GOT32 \ - && (FIX)->fx_r_type != BFD_RELOC_386_GOTPC \ - && ((FIX)->fx_addsy == NULL \ - || (! S_IS_EXTERNAL ((FIX)->fx_addsy) \ - && ! S_IS_WEAK ((FIX)->fx_addsy) \ - && S_IS_DEFINED ((FIX)->fx_addsy) \ - && ! S_IS_COMMON ((FIX)->fx_addsy)))) - #define TARGET_ARCH bfd_arch_i386 #define TARGET_MACH (i386_mach ()) -extern unsigned long i386_mach PARAMS ((void)); +extern unsigned long i386_mach (void); #ifdef TE_FreeBSD #define AOUT_TARGET_FORMAT "a.out-i386-freebsd" @@ -97,91 +59,35 @@ extern unsigned long i386_mach PARAMS ((void)); #define AOUT_TARGET_FORMAT "a.out-i386" #endif +#ifdef TE_FreeBSD +#define ELF_TARGET_FORMAT "elf32-i386-freebsd" +#endif +#ifndef ELF_TARGET_FORMAT +#define ELF_TARGET_FORMAT "elf32-i386" +#endif + #if ((defined (OBJ_MAYBE_COFF) && defined (OBJ_MAYBE_AOUT)) \ || defined (OBJ_ELF) || defined (OBJ_MAYBE_ELF)) extern const char *i386_target_format PARAMS ((void)); #define TARGET_FORMAT i386_target_format () #else #ifdef OBJ_ELF -#define TARGET_FORMAT "elf32-i386" +#define TARGET_FORMAT ELF_TARGET_FORMAT #endif #ifdef OBJ_AOUT #define TARGET_FORMAT AOUT_TARGET_FORMAT #endif #endif -#else /* ! BFD_ASSEMBLER */ - -/* COFF STUFF */ - -#define COFF_MAGIC I386MAGIC -#define BFD_ARCH bfd_arch_i386 -#define COFF_FLAGS F_AR32WR -#define TC_COUNT_RELOC(x) ((x)->fx_addsy || (x)->fx_r_type==7) -#define TC_COFF_FIX2RTYPE(fixP) tc_coff_fix2rtype(fixP) -extern short tc_coff_fix2rtype PARAMS ((struct fix *)); -#define TC_COFF_SIZEMACHDEP(frag) tc_coff_sizemachdep(frag) -extern int tc_coff_sizemachdep PARAMS ((fragS *frag)); - -#ifdef TE_GO32 -/* DJGPP now expects some sections to be 2**4 aligned. */ -#define SUB_SEGMENT_ALIGN(SEG) \ - ((strcmp (obj_segment_name (SEG), ".text") == 0 \ - || strcmp (obj_segment_name (SEG), ".data") == 0 \ - || strcmp (obj_segment_name (SEG), ".bss") == 0 \ - || strncmp (obj_segment_name (SEG), ".gnu.linkonce.t", 15) == 0 \ - || strncmp (obj_segment_name (SEG), ".gnu.linkonce.d", 15) == 0 \ - || strncmp (obj_segment_name (SEG), ".gnu.linkonce.r", 15) == 0) \ - ? 4 \ - : 2) -#else -#define SUB_SEGMENT_ALIGN(SEG) 2 +#if (defined (OBJ_MAYBE_ELF) || defined (OBJ_ELF)) +#define md_end i386_elf_emit_arch_note +extern void i386_elf_emit_arch_note PARAMS ((void)); #endif -#define TC_RVA_RELOC 7 -/* Need this for PIC relocations */ -#define NEED_FX_R_TYPE - -#ifdef TE_386BSD -/* The BSDI linker apparently rejects objects with a machine type of - M_386 (100). */ -#define AOUT_MACHTYPE 0 -#else -#define AOUT_MACHTYPE 100 -#endif - -#undef REVERSE_SORT_RELOCS - -#endif /* ! BFD_ASSEMBLER */ - -#define TC_FORCE_RELOCATION(fixp) tc_i386_force_relocation(fixp) -extern int tc_i386_force_relocation PARAMS ((struct fix *)); - -#ifdef BFD_ASSEMBLER -#define NO_RELOC BFD_RELOC_NONE -#else -#define NO_RELOC 0 -#endif -#define tc_coff_symbol_emit_hook(a) ; /* not used */ - -#ifndef BFD_ASSEMBLER -#ifndef OBJ_AOUT -#ifndef TE_PE -#ifndef TE_GO32 -/* Local labels starts with .L */ -#define LOCAL_LABEL(name) (name[0] == '.' \ - && (name[1] == 'L' || name[1] == 'X' || name[1] == '.')) -#endif -#endif -#endif -#endif +#define SUB_SEGMENT_ALIGN(SEG, FRCHAIN) 0 #define LOCAL_LABELS_FB 1 -#define tc_aout_pre_write_hook(x) {;} /* not used */ -#define tc_crawl_symbol_chain(a) {;} /* not used */ -#define tc_headers_hook(a) {;} /* not used */ - extern const char extra_symbol_chars[]; #define tc_symbol_chars extra_symbol_chars @@ -235,18 +141,6 @@ extern const char extra_symbol_chars[]; #define END_OF_INSN '\0' -/* Intel Syntax */ -/* Values 0-4 map onto scale factor */ -#define BYTE_PTR 0 -#define WORD_PTR 1 -#define DWORD_PTR 2 -#define QWORD_PTR 3 -#define XWORD_PTR 4 -#define SHORT 5 -#define OFFSET_FLAT 6 -#define FLAT 7 -#define NONE_FOUND 8 - typedef struct { /* instruction name sans width suffix ("mov" for movl insns) */ @@ -283,14 +177,15 @@ typedef struct #define CpuSSE 0x1000 /* Streaming SIMD extensions required */ #define CpuSSE2 0x2000 /* Streaming SIMD extensions 2 required */ #define Cpu3dnow 0x4000 /* 3dnow! support required */ -#define CpuUnknown 0x8000 /* The CPU is unknown, be on the safe side. */ +#define CpuPNI 0x8000 /* Prescott New Instructions required */ +#define CpuPadLock 0x10000 /* VIA PadLock required */ /* These flags are set by gas depending on the flag_code. */ #define Cpu64 0x4000000 /* 64bit support required */ #define CpuNo64 0x8000000 /* Not supported in the 64bit mode */ /* The default value for unknown CPUs - enable all features to avoid problems. */ -#define CpuUnknownFlags (Cpu086|Cpu186|Cpu286|Cpu386|Cpu486|Cpu586|Cpu686|CpuP4|CpuSledgehammer|CpuMMX|CpuSSE|CpuSSE2|Cpu3dnow|CpuK6|CpuAthlon) +#define CpuUnknownFlags (Cpu086|Cpu186|Cpu286|Cpu386|Cpu486|Cpu586|Cpu686|CpuP4|CpuSledgehammer|CpuMMX|CpuSSE|CpuSSE2|CpuPNI|Cpu3dnow|CpuK6|CpuAthlon|CpuPadLock) /* the bits in opcode_modifier are used to generate the final opcode from the base_opcode. These bits also are used to detect alternate forms of @@ -453,15 +348,17 @@ typedef struct modrm_byte; /* x86-64 extension prefix. */ -typedef struct - { - unsigned int mode64; - unsigned int extX; /* Used to extend modrm reg field. */ - unsigned int extY; /* Used to extend SIB index field. */ - unsigned int extZ; /* Used to extend modrm reg/mem, SIB base, modrm base fields. */ - unsigned int empty; /* Used to old-style byte registers to new style. */ - } -rex_byte; +typedef int rex_byte; +#define REX_OPCODE 0x40 + +/* Indicates 64 bit operand size. */ +#define REX_MODE64 8 +/* High extension to reg field of modrm byte. */ +#define REX_EXTX 4 +/* High extension to SIB index field. */ +#define REX_EXTY 2 +/* High extension to base field of modrm or SIB, or reg field of opcode. */ +#define REX_EXTZ 1 /* 386 opcode byte to code indirect addressing. */ typedef struct @@ -486,21 +383,72 @@ arch_entry; #define GLOBAL_OFFSET_TABLE_NAME "_GLOBAL_OFFSET_TABLE_" #endif -#ifdef BFD_ASSEMBLER +#ifndef LEX_AT +#define TC_PARSE_CONS_EXPRESSION(EXP, NBYTES) x86_cons (EXP, NBYTES) +extern void x86_cons PARAMS ((expressionS *, int)); + +#define TC_CONS_FIX_NEW(FRAG,OFF,LEN,EXP) x86_cons_fix_new(FRAG, OFF, LEN, EXP) +extern void x86_cons_fix_new + PARAMS ((fragS *, unsigned int, unsigned int, expressionS *)); +#endif + +#ifdef TE_PE +#define TC_CONS_FIX_NEW(FRAG,OFF,LEN,EXP) x86_pe_cons_fix_new(FRAG, OFF, LEN, EXP) +extern void x86_pe_cons_fix_new + PARAMS ((fragS *, unsigned int, unsigned int, expressionS *)); +#endif + +#define DIFF_EXPR_OK /* foo-. gets turned into PC relative relocs */ + +#define NO_RELOC BFD_RELOC_NONE + void i386_validate_fix PARAMS ((struct fix *)); -#define TC_VALIDATE_FIX(FIXP,SEGTYPE,SKIP) i386_validate_fix(FIXP) +#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 PARAMS ((struct fix *)); + +/* Values passed to md_apply_fix3 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 -#endif /* TC_I386 */ +/* 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_plt \ + || (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)) #define md_operand(x) 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 \ - && (!(fill) || ((char)*(fill) == (char)0x90 && (len) == 1)) \ +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)); \ @@ -517,9 +465,6 @@ if (fragP->fr_type == rs_align_code) \ - fragP->fr_address \ - fragP->fr_fix)); -/* call md_apply_fix3 with segment instead of md_apply_fix */ -#define MD_APPLY_FIX3 - void i386_print_statistics PARAMS ((FILE *)); #define tc_print_statistics i386_print_statistics @@ -530,4 +475,31 @@ void i386_print_statistics PARAMS ((FILE *)); extern void sco_id PARAMS ((void)); #endif -#define DIFF_EXPR_OK /* foo-. gets turned into PC relative relocs */ +/* 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_regname_to_dw2regnum tc_x86_regname_to_dw2regnum +extern int tc_x86_regname_to_dw2regnum PARAMS ((const char *regname)); + +#define tc_cfi_frame_initial_instructions tc_x86_frame_initial_instructions +extern void tc_x86_frame_initial_instructions PARAMS ((void)); + +#define md_elf_section_type(str,len) i386_elf_section_type (str, len) +extern int i386_elf_section_type PARAMS ((const char *, size_t 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 */ + +#endif /* TC_I386 */