X-Git-Url: http://git.efficios.com/?a=blobdiff_plain;f=gas%2Fconfig%2Ftc-i386.h;h=5b93dbe11c702fb4c73dbf8c5a585eaf6f9e7908;hb=820aff5582fe3441158635c80985ae2054ef390e;hp=ef778c158e5b9d03a73b0428609aecf4b3377a73;hpb=b9e57a387a6bdc15fd8bf477dc4d45131f0307d6;p=deliverable%2Fbinutils-gdb.git diff --git a/gas/config/tc-i386.h b/gas/config/tc-i386.h index ef778c158e..5b93dbe11c 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, 1999 - Free Software Foundation. + Copyright 1989, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, + 2001, 2002, 2003 + Free Software Foundation, Inc. This file is part of GAS, the GNU Assembler. @@ -33,79 +34,59 @@ struct fix; #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_RELOC(X,Y) (((X) != BFD_RELOC_386_PLT32 && \ - (X) != BFD_RELOC_386_GOTOFF && \ - (X) != BFD_RELOC_386_GOT32 && \ - (X) != BFD_RELOC_386_GOTPC) ? Y : X) - -#define tc_fix_adjustable(X) tc_i386_fix_adjustable(X) -extern int tc_i386_fix_adjustable PARAMS ((struct fix *)); - -/* This is the relocation type for direct references to GLOBAL_OFFSET_TABLE. - * It comes up in complicated expressions such as - * _GLOBAL_OFFSET_TABLE_+[.-.L284], which cannot be expressed normally with - * the regular expressions. The fixup specified here when used at runtime - * implies that we should add the address of the GOT to the specified location, - * and as a result we have simplified the expression into something we can use. - */ -#define TC_RELOC_GLOBAL_OFFSET_TABLE BFD_RELOC_386_GOTPC - -/* 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)); -#ifdef OBJ_AOUT +#ifdef TE_FreeBSD +#define AOUT_TARGET_FORMAT "a.out-i386-freebsd" +#endif #ifdef TE_NetBSD -#define TARGET_FORMAT "a.out-i386-netbsd" +#define AOUT_TARGET_FORMAT "a.out-i386-netbsd" #endif #ifdef TE_386BSD -#define TARGET_FORMAT "a.out-i386-bsd" +#define AOUT_TARGET_FORMAT "a.out-i386-bsd" #endif #ifdef TE_LINUX -#define TARGET_FORMAT "a.out-i386-linux" +#define AOUT_TARGET_FORMAT "a.out-i386-linux" #endif #ifdef TE_Mach -#define TARGET_FORMAT "a.out-mach3" +#define AOUT_TARGET_FORMAT "a.out-mach3" #endif #ifdef TE_DYNIX -#define TARGET_FORMAT "a.out-i386-dynix" +#define AOUT_TARGET_FORMAT "a.out-i386-dynix" #endif -#ifndef TARGET_FORMAT -#define TARGET_FORMAT "a.out-i386" +#ifndef AOUT_TARGET_FORMAT +#define AOUT_TARGET_FORMAT "a.out-i386" #endif -#endif /* OBJ_AOUT */ -#ifdef OBJ_ELF -#define TARGET_FORMAT "elf32-i386" +#ifdef TE_FreeBSD +#define ELF_TARGET_FORMAT "elf32-i386-freebsd" +#endif +#ifndef ELF_TARGET_FORMAT +#define ELF_TARGET_FORMAT "elf32-i386" #endif -#ifdef OBJ_MAYBE_ELF -#ifdef OBJ_MAYBE_COFF +#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 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 PARAMS ((void)); #endif +#define SUB_SEGMENT_ALIGN(SEG, FRCHAIN) 0 + #else /* ! BFD_ASSEMBLER */ /* COFF STUFF */ @@ -114,15 +95,25 @@ extern const char *i386_target_format PARAMS ((void)); #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) +#define TC_COFF_FIX2RTYPE(FIX) tc_coff_fix2rtype(FIX) extern short tc_coff_fix2rtype PARAMS ((struct fix *)); -#define TC_COFF_SIZEMACHDEP(frag) tc_coff_sizemachdep(frag) +#define TC_COFF_SIZEMACHDEP(frag) tc_coff_sizemachdep (frag) extern int tc_coff_sizemachdep PARAMS ((fragS *frag)); -#define SUB_SEGMENT_ALIGN(SEG) 2 -#define TC_RVA_RELOC 7 -/* Need this for PIC relocations */ -#define NEED_FX_R_TYPE +#ifdef TE_GO32 +/* DJGPP now expects some sections to be 2**4 aligned. */ +#define SUB_SEGMENT_ALIGN(SEG, FRCHAIN) \ + ((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, FRCHAIN) 2 +#endif #ifdef TE_386BSD /* The BSDI linker apparently rejects objects with a machine type of @@ -132,21 +123,6 @@ extern int tc_coff_sizemachdep PARAMS ((fragS *frag)); #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 @@ -156,13 +132,15 @@ extern int tc_i386_force_relocation PARAMS ((struct fix *)); #endif #endif #endif -#endif - -#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 */ +#define tc_coff_symbol_emit_hook(a) {;} /* not used */ + +#endif /* ! BFD_ASSEMBLER */ + +#define LOCAL_LABELS_FB 1 extern const char extra_symbol_chars[]; #define tc_symbol_chars extra_symbol_chars @@ -173,13 +151,14 @@ extern const char extra_symbol_chars[]; /* Prefixes will be emitted in the order defined below. WAIT_PREFIX must be the first prefix since FWAIT is really is an - instruction, and so must come before any prefixes. */ + instruction, and so must come before any prefixes. */ #define WAIT_PREFIX 0 #define LOCKREP_PREFIX 1 #define ADDR_PREFIX 2 #define DATA_PREFIX 3 #define SEG_PREFIX 4 -#define MAX_PREFIXES 5 /* max prefixes per opcode */ +#define REX_PREFIX 5 /* must come last. */ +#define MAX_PREFIXES 6 /* max prefixes per opcode */ /* we define the syntax here (modulo base,index,scale syntax) */ #define REGISTER_PREFIX '%' @@ -202,15 +181,13 @@ extern const char extra_symbol_chars[]; #define NO_BASE_REGISTER_16 6 /* these are the instruction mnemonic suffixes. */ -#define DWORD_MNEM_SUFFIX 'l' #define WORD_MNEM_SUFFIX 'w' #define BYTE_MNEM_SUFFIX 'b' #define SHORT_MNEM_SUFFIX 's' #define LONG_MNEM_SUFFIX 'l' +#define QWORD_MNEM_SUFFIX 'q' /* Intel Syntax */ #define LONG_DOUBLE_MNEM_SUFFIX 'x' -/* Intel Syntax */ -#define INTEL_DWORD_MNEM_SUFFIX 'd' /* modrm.mode = REGMEM_FIELD_HAS_REG when a register is in there */ #define REGMEM_FIELD_HAS_REG 0x3/* always = 0x3 */ @@ -229,77 +206,6 @@ extern const char extra_symbol_chars[]; #define OFFSET_FLAT 6 #define FLAT 7 #define NONE_FOUND 8 -/* - When an operand is read in it is classified by its type. This type includes - all the possible ways an operand can be used. Thus, '%eax' is both 'register - # 0' and 'The Accumulator'. In our language this is expressed by OR'ing - 'Reg32' (any 32 bit register) and 'Acc' (the accumulator). - Operands are classified so that we can match given operand types with - the opcode table in opcode/i386.h. - */ -/* register */ -#define Reg8 0x1 /* 8 bit reg */ -#define Reg16 0x2 /* 16 bit reg */ -#define Reg32 0x4 /* 32 bit reg */ -/* immediate */ -#define Imm8 0x8 /* 8 bit immediate */ -#define Imm8S 0x10 /* 8 bit immediate sign extended */ -#define Imm16 0x20 /* 16 bit immediate */ -#define Imm32 0x40 /* 32 bit immediate */ -#define Imm1 0x80 /* 1 bit immediate */ -/* memory */ -#define BaseIndex 0x100 -/* Disp8,16,32 are used in different ways, depending on the - instruction. For jumps, they specify the size of the PC relative - displacement, for baseindex type instructions, they specify the - size of the offset relative to the base register, and for memory - offset instructions such as `mov 1234,%al' they specify the size of - the offset relative to the segment base. */ -#define Disp8 0x200 /* 8 bit displacement */ -#define Disp16 0x400 /* 16 bit displacement */ -#define Disp32 0x800 /* 32 bit displacement */ -/* specials */ -#define InOutPortReg 0x1000 /* register to hold in/out port addr = dx */ -#define ShiftCount 0x2000 /* register to hold shift cound = cl */ -#define Control 0x4000 /* Control register */ -#define Debug 0x8000 /* Debug register */ -#define Test 0x10000 /* Test register */ -#define FloatReg 0x20000 /* Float register */ -#define FloatAcc 0x40000 /* Float stack top %st(0) */ -#define SReg2 0x80000 /* 2 bit segment register */ -#define SReg3 0x100000 /* 3 bit segment register */ -#define Acc 0x200000 /* Accumulator %al or %ax or %eax */ -#define JumpAbsolute 0x400000 -#define RegMMX 0x800000 /* MMX register */ -#define RegXMM 0x1000000 /* XMM registers in PIII */ -#define EsSeg 0x2000000 /* String insn operand with fixed es segment */ -/* InvMem is for instructions with a modrm byte that only allow a - general register encoding in the i.tm.mode and i.tm.regmem fields, - eg. control reg moves. They really ought to support a memory form, - but don't, so we add an InvMem flag to the register operand to - indicate that it should be encoded in the i.tm.regmem field. */ -#define InvMem 0x4000000 - -#define Reg (Reg8|Reg16|Reg32) /* gen'l register */ -#define WordReg (Reg16|Reg32) -#define ImplicitRegister (InOutPortReg|ShiftCount|Acc|FloatAcc) -#define Imm (Imm8|Imm8S|Imm16|Imm32) /* gen'l immediate */ -#define Disp (Disp8|Disp16|Disp32) /* General displacement */ -#define AnyMem (Disp|BaseIndex|InvMem) /* General memory */ -/* The following aliases are defined because the opcode table - carefully specifies the allowed memory types for each instruction. - At the moment we can only tell a memory reference size by the - instruction suffix, so there's not much point in defining Mem8, - Mem16, Mem32 and Mem64 opcode modifiers - We might as well just use - the suffix directly to check memory operands. */ -#define LLongMem AnyMem /* 64 bits (or more) */ -#define LongMem AnyMem /* 32 bit memory ref */ -#define ShortMem AnyMem /* 16 bit memory ref */ -#define WordMem AnyMem /* 16 or 32 bit memory ref */ -#define ByteMem AnyMem /* 8 bit memory ref */ - -#define SMALLEST_DISP_TYPE(num) \ - (fits_in_signed_byte(num) ? (Disp8|Disp32) : Disp32) typedef struct { @@ -318,7 +224,33 @@ typedef struct AMD 3DNow! instructions. If this template has no extension opcode (the usual case) use None */ unsigned int extension_opcode; -#define None 0xffff /* If no extension_opcode is possible. */ +#define None 0xffff /* If no extension_opcode is possible. */ + + /* cpu feature flags */ + unsigned int cpu_flags; +#define Cpu086 0x1 /* Any old cpu will do, 0 does the same */ +#define Cpu186 0x2 /* i186 or better required */ +#define Cpu286 0x4 /* i286 or better required */ +#define Cpu386 0x8 /* i386 or better required */ +#define Cpu486 0x10 /* i486 or better required */ +#define Cpu586 0x20 /* i585 or better required */ +#define Cpu686 0x40 /* i686 or better required */ +#define CpuP4 0x80 /* Pentium4 or better required */ +#define CpuK6 0x100 /* AMD K6 or better required*/ +#define CpuAthlon 0x200 /* AMD Athlon or better required*/ +#define CpuSledgehammer 0x400 /* Sledgehammer or better required */ +#define CpuMMX 0x800 /* MMX support required */ +#define CpuSSE 0x1000 /* Streaming SIMD extensions required */ +#define CpuSSE2 0x2000 /* Streaming SIMD extensions 2 required */ +#define Cpu3dnow 0x4000 /* 3dnow! support required */ +#define CpuPNI 0x8000 /* Prescott New Instuctions 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|CpuPNI|Cpu3dnow|CpuK6|CpuAthlon) /* 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 @@ -334,34 +266,107 @@ typedef struct #define FloatR 0x8 /* src/dest swap for floats: MUST BE 0x8 */ #define ShortForm 0x10 /* register is in low 3 bits of opcode */ #define FloatMF 0x20 /* FP insn memory format bit, sized by 0x4 */ -#define Jump 0x40 /* special case for jump insns. */ +#define Jump 0x40 /* special case for jump insns. */ #define JumpDword 0x80 /* call and jump */ #define JumpByte 0x100 /* loop and jecxz */ #define JumpInterSegment 0x200 /* special case for intersegment leaps/calls */ #define FloatD 0x400 /* direction for float insns: MUST BE 0x400 */ #define Seg2ShortForm 0x800 /* encoding of load segment reg insns */ -#define Seg3ShortForm 0x1000 /* fs/gs segment register insns. */ +#define Seg3ShortForm 0x1000 /* fs/gs segment register insns. */ #define Size16 0x2000 /* needs size prefix if in 32-bit mode */ #define Size32 0x4000 /* needs size prefix if in 16-bit mode */ -#define IgnoreSize 0x8000 /* instruction ignores operand size prefix */ -#define No_bSuf 0x10000 /* b suffix on instruction illegal */ -#define No_wSuf 0x20000 /* w suffix on instruction illegal */ -#define No_lSuf 0x40000 /* l suffix on instruction illegal */ -#define No_sSuf 0x80000 /* s suffix on instruction illegal */ -#define No_dSuf 0x100000 /* d suffix on instruction illegal */ -#define No_xSuf 0x200000 /* x suffix on instruction illegal */ -#define FWait 0x400000 /* instruction needs FWAIT */ -#define IsString 0x800000 /* quick test for string instructions */ -#define regKludge 0x1000000 /* fake an extra reg operand for clr, imul */ -#define IsPrefix 0x2000000 /* opcode is a prefix */ -#define ImmExt 0x4000000 /* instruction has extension in 8 bit imm */ +#define Size64 0x8000 /* needs size prefix if in 16-bit mode */ +#define IgnoreSize 0x10000 /* instruction ignores operand size prefix */ +#define DefaultSize 0x20000 /* default insn size depends on mode */ +#define No_bSuf 0x40000 /* b suffix on instruction illegal */ +#define No_wSuf 0x80000 /* w suffix on instruction illegal */ +#define No_lSuf 0x100000 /* l suffix on instruction illegal */ +#define No_sSuf 0x200000 /* s suffix on instruction illegal */ +#define No_qSuf 0x400000 /* q suffix on instruction illegal */ +#define No_xSuf 0x800000 /* x suffix on instruction illegal */ +#define FWait 0x1000000 /* instruction needs FWAIT */ +#define IsString 0x2000000 /* quick test for string instructions */ +#define regKludge 0x4000000 /* fake an extra reg operand for clr, imul */ +#define IsPrefix 0x8000000 /* opcode is a prefix */ +#define ImmExt 0x10000000 /* instruction has extension in 8 bit imm */ +#define NoRex64 0x20000000 /* instruction don't need Rex64 prefix. */ +#define Rex64 0x40000000 /* instruction require Rex64 prefix. */ #define Ugh 0x80000000 /* deprecated fp insn, gets a warning */ /* operand_types[i] describes the type of operand i. This is made by OR'ing together all of the possible type masks. (e.g. 'operand_types[i] = Reg|Imm' specifies that operand i can be - either a register or an immediate operand */ + either a register or an immediate operand. */ unsigned int operand_types[3]; + + /* operand_types[i] bits */ + /* register */ +#define Reg8 0x1 /* 8 bit reg */ +#define Reg16 0x2 /* 16 bit reg */ +#define Reg32 0x4 /* 32 bit reg */ +#define Reg64 0x8 /* 64 bit reg */ + /* immediate */ +#define Imm8 0x10 /* 8 bit immediate */ +#define Imm8S 0x20 /* 8 bit immediate sign extended */ +#define Imm16 0x40 /* 16 bit immediate */ +#define Imm32 0x80 /* 32 bit immediate */ +#define Imm32S 0x100 /* 32 bit immediate sign extended */ +#define Imm64 0x200 /* 64 bit immediate */ +#define Imm1 0x400 /* 1 bit immediate */ + /* memory */ +#define BaseIndex 0x800 + /* Disp8,16,32 are used in different ways, depending on the + instruction. For jumps, they specify the size of the PC relative + displacement, for baseindex type instructions, they specify the + size of the offset relative to the base register, and for memory + offset instructions such as `mov 1234,%al' they specify the size of + the offset relative to the segment base. */ +#define Disp8 0x1000 /* 8 bit displacement */ +#define Disp16 0x2000 /* 16 bit displacement */ +#define Disp32 0x4000 /* 32 bit displacement */ +#define Disp32S 0x8000 /* 32 bit signed displacement */ +#define Disp64 0x10000 /* 64 bit displacement */ + /* specials */ +#define InOutPortReg 0x20000 /* register to hold in/out port addr = dx */ +#define ShiftCount 0x40000 /* register to hold shift cound = cl */ +#define Control 0x80000 /* Control register */ +#define Debug 0x100000 /* Debug register */ +#define Test 0x200000 /* Test register */ +#define FloatReg 0x400000 /* Float register */ +#define FloatAcc 0x800000 /* Float stack top %st(0) */ +#define SReg2 0x1000000 /* 2 bit segment register */ +#define SReg3 0x2000000 /* 3 bit segment register */ +#define Acc 0x4000000 /* Accumulator %al or %ax or %eax */ +#define JumpAbsolute 0x8000000 +#define RegMMX 0x10000000 /* MMX register */ +#define RegXMM 0x20000000 /* XMM registers in PIII */ +#define EsSeg 0x40000000 /* String insn operand with fixed es segment */ + + /* InvMem is for instructions with a modrm byte that only allow a + general register encoding in the i.tm.mode and i.tm.regmem fields, + eg. control reg moves. They really ought to support a memory form, + but don't, so we add an InvMem flag to the register operand to + indicate that it should be encoded in the i.tm.regmem field. */ +#define InvMem 0x80000000 + +#define Reg (Reg8|Reg16|Reg32|Reg64) /* gen'l register */ +#define WordReg (Reg16|Reg32|Reg64) +#define ImplicitRegister (InOutPortReg|ShiftCount|Acc|FloatAcc) +#define Imm (Imm8|Imm8S|Imm16|Imm32S|Imm32|Imm64) /* gen'l immediate */ +#define EncImm (Imm8|Imm16|Imm32|Imm32S) /* Encodable gen'l immediate */ +#define Disp (Disp8|Disp16|Disp32|Disp32S|Disp64) /* General displacement */ +#define AnyMem (Disp8|Disp16|Disp32|Disp32S|BaseIndex|InvMem) /* General memory */ + /* The following aliases are defined because the opcode table + carefully specifies the allowed memory types for each instruction. + At the moment we can only tell a memory reference size by the + instruction suffix, so there's not much point in defining Mem8, + Mem16, Mem32 and Mem64 opcode modifiers - We might as well just use + the suffix directly to check memory operands. */ +#define LLongMem AnyMem /* 64 bits (or more) */ +#define LongMem AnyMem /* 32 bit memory ref */ +#define ShortMem AnyMem /* 16 bit memory ref */ +#define WordMem AnyMem /* 16 or 32 bit memory ref */ +#define ByteMem AnyMem /* 8 bit memory ref */ } template; @@ -373,78 +378,161 @@ template; END. */ typedef struct - { - const template *start; - const template *end; - } templates; +{ + const template *start; + const template *end; +} +templates; /* these are for register name --> number & type hash lookup */ typedef struct - { - char *reg_name; - unsigned int reg_type; - unsigned int reg_num; - } +{ + char *reg_name; + unsigned int reg_type; + unsigned int reg_flags; +#define RegRex 0x1 /* Extended register. */ +#define RegRex64 0x2 /* Extended 8 bit register. */ + unsigned int reg_num; +} reg_entry; typedef struct - { - char *seg_name; - unsigned int seg_prefix; - } +{ + char *seg_name; + unsigned int seg_prefix; +} seg_entry; -/* 386 operand encoding bytes: see 386 book for details of this. */ +/* 386 operand encoding bytes: see 386 book for details of this. */ typedef struct - { - unsigned int regmem; /* codes register or memory operand */ - unsigned int reg; /* codes register operand (or extended opcode) */ - unsigned int mode; /* how to interpret regmem & reg */ - } +{ + unsigned int regmem; /* codes register or memory operand */ + unsigned int reg; /* codes register operand (or extended opcode) */ + unsigned int mode; /* how to interpret regmem & reg */ +} modrm_byte; -/* 386 opcode byte to code indirect addressing. */ +/* x86-64 extension prefix. */ +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 - { - unsigned base; - unsigned index; - unsigned scale; - } +{ + unsigned base; + unsigned index; + unsigned scale; +} sib_byte; +/* x86 arch names and features */ +typedef struct +{ + const char *name; /* arch name */ + unsigned int flags; /* cpu feature flags */ +} +arch_entry; + /* The name of the global offset table generated by the compiler. Allow - this to be overridden if need be. */ + this to be overridden if need be. */ #ifndef GLOBAL_OFFSET_TABLE_NAME #define GLOBAL_OFFSET_TABLE_NAME "_GLOBAL_OFFSET_TABLE_" #endif +#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 + +#define DIFF_EXPR_OK /* foo-. gets turned into PC relative relocs */ + #ifdef BFD_ASSEMBLER +#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)) + +#else /* ! BFD_ASSEMBLER */ + +#define NO_RELOC 0 + +#define TC_RVA_RELOC 7 + +/* Need this for PIC relocations */ +#define NEED_FX_R_TYPE + +#undef REVERSE_SORT_RELOCS + +/* For COFF. */ +#define TC_FORCE_RELOCATION(FIX) \ + ((FIX)->fx_r_type == 7 || generic_force_reloc (FIX)) +#endif /* ! BFD_ASSEMBLER */ #define md_operand(x) extern const struct relax_type md_relax_table[]; #define TC_GENERIC_RELAX_TABLE md_relax_table - -extern int flag_16bit_code; +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)) \ { \ - char *p; \ - p = frag_var (rs_align_code, 15, 1, (relax_substateT) max, \ - (symbolS *) 0, (offsetT) (n), (char *) 0); \ - *p = 0x90; \ + frag_align_code ((n), (max)); \ goto around; \ } +#define MAX_MEM_FOR_RS_ALIGN_CODE 15 + extern void i386_align_code PARAMS ((fragS *, int)); #define HANDLE_ALIGN(fragP) \ @@ -453,9 +541,6 @@ 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 @@ -466,6 +551,19 @@ 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 -/* end of tc-i386.h */ +#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)); + +#endif /* TC_I386 */