/* tc-i386.h -- Header file for tc-i386.c
- Copyright (C) 1989, 1992 Free Software Foundation.
+ Copyright (C) 1989, 92, 93, 94, 95, 96, 97, 1998 Free Software Foundation.
This file is part of GAS, the GNU Assembler.
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, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
+ along with GAS; see the file COPYING. If not, write to the Free
+ Software Foundation, 59 Temple Place - Suite 330, Boston, MA
+ 02111-1307, USA. */
#ifndef TC_I386
#define TC_I386 1
+#ifdef ANSI_PROTOTYPES
+struct fix;
+#endif
+
+#define TARGET_BYTES_BIG_ENDIAN 0
+
#ifdef TE_LYNX
#define TARGET_FORMAT "coff-i386-lynx"
#endif
(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
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(X) \
- ((X) != BFD_RELOC_386_PLT32 && \
- (X) != BFD_RELOC_386_GOT32 && \
- (X) != BFD_RELOC_386_GOTPC)
+#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_BYTES_BIG_ENDIAN 0
#ifdef OBJ_AOUT
#ifdef TE_NetBSD
#ifdef TE_Mach
#define TARGET_FORMAT "a.out-mach3"
#endif
+#ifdef TE_DYNIX
+#define TARGET_FORMAT "a.out-i386-dynix"
+#endif
#ifndef TARGET_FORMAT
#define TARGET_FORMAT "a.out-i386"
#endif
#define TARGET_FORMAT "elf32-i386"
#endif
+#ifdef OBJ_MAYBE_ELF
+#ifdef OBJ_MAYBE_COFF
+extern const char *i386_target_format PARAMS ((void));
+#define TARGET_FORMAT i386_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_subsy||(x)->fx_offset */)
+#define TC_COUNT_RELOC(x) ((x)->fx_addsy || (x)->fx_r_type==7)
+#define TC_FORCE_RELOCATION(x) ((x)->fx_r_type==7)
#define TC_COFF_FIX2RTYPE(fixP) tc_coff_fix2rtype(fixP)
-extern short tc_coff_fix2rtype ();
+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));
#define SUB_SEGMENT_ALIGN(SEG) 2
-
+#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 */
#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] == '.'))
-#define FAKE_LABEL_NAME ".L0\001"
#endif
+#endif
+#endif
+#endif
+
#define LOCAL_LABELS_FB 1
#define tc_aout_pre_write_hook(x) {;} /* not used */
#define tc_headers_hook(a) {;} /* not used */
#define MAX_OPERANDS 3 /* max operands per insn */
-#define MAX_PREFIXES 5 /* max prefixes per opcode */
-#define MAX_IMMEDIATE_OPERANDS 2/* max immediates per insn */
-#define MAX_MEMORY_OPERANDS 2 /* max memory ref per insn (lcall uses 2) */
+#define MAX_IMMEDIATE_OPERANDS 2/* max immediates per insn (lcall, ljmp) */
+#define MAX_MEMORY_OPERANDS 2 /* max memory refs per insn (string ops) */
+
+/* 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. */
+#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 */
/* we define the syntax here (modulo base,index,scale syntax) */
#define REGISTER_PREFIX '%'
Operands are classified so that we can match given operand types with
the opcode table in i386-opcode.h.
*/
-#define Unknown 0x0
/* register */
-#define Reg8 0x1 /* 8 bit reg */
-#define Reg16 0x2 /* 16 bit reg */
-#define Reg32 0x4 /* 32 bit reg */
-#define Reg (Reg8|Reg16|Reg32) /* gen'l register */
-#define WordReg (Reg16|Reg32) /* for push/pop operands */
+#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 */
-#define ImmUnknown Imm32 /* for unknown expressions */
-#define Imm (Imm8|Imm8S|Imm16|Imm32) /* gen'l 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 Disp8 0x200 /* 8 bit displacement (for jumps) */
-#define Disp16 0x400 /* 16 bit displacement */
-#define Disp32 0x800 /* 32 bit displacement */
-#define Disp (Disp8|Disp16|Disp32) /* General displacement */
-#define DispUnknown Disp32 /* for unknown size displacements */
-#define Mem8 0x1000
-#define Mem16 0x2000
-#define Mem32 0x4000
-#define BaseIndex 0x8000
-#define Mem (Disp|Mem8|Mem16|Mem32|BaseIndex) /* General memory */
-#define WordMem (Mem16|Mem32|Disp|BaseIndex)
-#define ByteMem (Mem8|Disp|BaseIndex)
+#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 */
+/* Mem8,16,32 are used to limit the allowed sizes of memory operands */
+#define Mem8 0x1000
+#define Mem16 0x2000
+#define Mem32 0x4000
/* specials */
-#define InOutPortReg 0x10000 /* register to hold in/out port addr = dx */
-#define ShiftCount 0x20000 /* register to hold shift cound = cl */
-#define Control 0x40000 /* Control register */
-#define Debug 0x80000 /* Debug register */
-#define Test 0x100000 /* Test register */
-#define FloatReg 0x200000 /* Float register */
-#define FloatAcc 0x400000 /* Float stack top %st(0) */
-#define SReg2 0x800000 /* 2 bit segment register */
-#define SReg3 0x1000000 /* 3 bit segment register */
-#define Acc 0x2000000 /* Accumulator %al or %ax or %eax */
-#define ImplicitRegister (InOutPortReg|ShiftCount|Acc|FloatAcc)
+#define InOutPortReg 0x10000 /* register to hold in/out port addr = dx */
+#define ShiftCount 0x20000 /* register to hold shift cound = cl */
+#define Control 0x40000 /* Control register */
+#define Debug 0x80000 /* Debug register */
+#define Test 0x100000 /* Test register */
+#define FloatReg 0x200000 /* Float register */
+#define FloatAcc 0x400000 /* Float stack top %st(0) */
+#define SReg2 0x800000 /* 2 bit segment register */
+#define SReg3 0x1000000 /* 3 bit segment register */
+#define Acc 0x2000000 /* Accumulator %al or %ax or %eax */
#define JumpAbsolute 0x4000000
-#define Abs8 0x08000000
-#define Abs16 0x10000000
-#define Abs32 0x20000000
-#define Abs (Abs8|Abs16|Abs32)
+#define Abs8 0x8000000
+#define Abs16 0x10000000
+#define Abs32 0x20000000
+#define RegMMX 0x40000000 /* MMX register */
+#define EsSeg 0x80000000 /* String insn operand with fixed es segment */
+
+#define Reg (Reg8|Reg16|Reg32) /* gen'l register */
+#define WordReg (Reg16|Reg32)
+#define Imm (Imm8|Imm8S|Imm16|Imm32) /* gen'l immediate */
+#define Disp (Disp8|Disp16|Disp32) /* General displacement */
+#define Mem (Mem8|Mem16|Mem32|Disp|BaseIndex) /* General memory */
+#define WordMem (Mem16|Mem32|Disp|BaseIndex)
+#define ByteMem (Mem8|Disp|BaseIndex)
+#define ImplicitRegister (InOutPortReg|ShiftCount|Acc|FloatAcc)
+#define Abs (Abs8|Abs16|Abs32)
#define Byte (Reg8|Imm8|Imm8S)
#define Word (Reg16|Imm16)
unsigned int opcode_modifier;
/* opcode_modifier bits: */
-#define W 0x1 /* set if operands are words or dwords */
-#define D 0x2 /* D = 0 if Reg --> Regmem; D = 1 if Regmem --> Reg */
- /* direction flag for floating insns: MUST BE 0x400 */
-#define FloatD 0x400
- /* shorthand */
-#define DW (D|W)
-#define ShortForm 0x10 /* register is in low 3 bits of opcode */
-#define ShortFormW 0x20 /* ShortForm and W bit is 0x8 */
-#define Seg2ShortForm 0x40 /* encoding of load segment reg insns */
-#define Seg3ShortForm 0x80 /* fs/gs segment register insns. */
-#define Jump 0x100 /* special case for jump insns. */
+#define W 0x1 /* set if operands can be words or dwords
+ encoded the canonical way: MUST BE 0x1 */
+#define D 0x2 /* D = 0 if Reg --> Regmem;
+ D = 1 if Regmem --> Reg: MUST BE 0x2 */
+#define Modrm 0x4
+#define ReverseRegRegmem 0x8
+#define ShortForm 0x10 /* register is in low 3 bits of opcode */
+#define ShortFormW 0x20 /* ShortForm and W bit is 0x8 */
+#define Seg2ShortForm 0x40 /* encoding of load segment reg insns */
+#define Seg3ShortForm 0x80 /* fs/gs segment register insns. */
+#define Jump 0x100 /* special case for jump insns. */
#define JumpInterSegment 0x200 /* special case for intersegment leaps/calls */
- /* 0x400 CANNOT BE USED since it's already used by FloatD above */
-#define DONT_USE 0x400
-#define NoModrm 0x800
-#define Modrm 0x1000
-#define imulKludge 0x2000
-#define JumpByte 0x4000
-#define JumpDword 0x8000
-#define ReverseRegRegmem 0x10000
-#define Data16 0x20000 /* needs data prefix if in 32-bit mode */
-#define Data32 0x40000 /* needs data prefix if in 16-bit mode */
-
- /* (opcode_modifier & COMES_IN_ALL_SIZES) is true if the
- instuction comes in byte, word, and dword sizes and is encoded into
- machine code in the canonical way. */
-#define COMES_IN_ALL_SIZES (W)
+#define FloatD 0x400 /* direction for float insns: MUST BE 0x400 */
+#define JumpByte 0x800
+#define JumpDword 0x1000
+#define FWait 0x2000 /* instruction needs FWAIT */
+#define Data16 0x4000 /* needs data prefix if in 32-bit mode */
+#define Data32 0x8000 /* needs data prefix if in 16-bit mode */
+#define IsString 0x100000 /* quick test for string instructions */
+#define regKludge 0x200000 /* fake an extra reg operand for clr, imul */
+
+#define DW (D|W) /* shorthand */
/* (opcode_modifier & COMES_IN_BOTH_DIRECTIONS) indicates that the
source and destination operands can be reversed by setting either
#endif
#ifdef BFD_ASSEMBLER
-void i386_validate_fix ();
+void i386_validate_fix PARAMS ((struct fix *));
#define TC_VALIDATE_FIX(FIXP,SEGTYPE,SKIP) i386_validate_fix(FIXP)
#endif
extern const struct relax_type md_relax_table[];
#define TC_GENERIC_RELAX_TABLE md_relax_table
+
+extern int flag_16bit_code;
+
+#ifdef BFD_ASSEMBLER
+#define md_maybe_text() \
+ ((bfd_get_section_flags (stdoutput, now_seg) & SEC_CODE) != 0)
+#else
+#define md_maybe_text() \
+ (now_seg != data_section && now_seg != bss_section)
+#endif
+
+#define md_do_align(n, fill, len, max, around) \
+if ((n) && !need_pass_2 \
+ && (!(fill) || ((char)*(fill) == (char)0x90 && (len) == 1)) \
+ && md_maybe_text ()) \
+ { \
+ char *p; \
+ p = frag_var (rs_align_code, 15, 1, (relax_substateT) max, \
+ (symbolS *) 0, (offsetT) (n), (char *) 0); \
+ *p = 0x90; \
+ goto around; \
+ }
+
+extern void i386_align_code PARAMS ((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));
+
+/* 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
+
+#define md_number_to_chars number_to_chars_littleendian
+
+#ifdef SCO_ELF
+#define tc_init_after_args() sco_id ()
+extern void sco_id PARAMS ((void));
+#endif
+
+#define DIFF_EXPR_OK /* foo-. gets turned into PC relative relocs */
+
/* end of tc-i386.h */
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