/* Copyright (C) 1995 DJ Delorie, see COPYING.DJ for details */ #ifndef __dj_include_coff_h_ #define __dj_include_coff_h_ #ifdef __cplusplus extern "C" { #endif #ifndef __dj_ENFORCE_ANSI_FREESTANDING #ifndef __STRICT_ANSI__ #ifndef _POSIX_SOURCE /*** coff information for Intel 386/486. */ /********************** FILE HEADER **********************/ struct external_filehdr { unsigned short f_magic; /* magic number */ unsigned short f_nscns; /* number of sections */ unsigned long f_timdat; /* time & date stamp */ unsigned long f_symptr; /* file pointer to symtab */ unsigned long f_nsyms; /* number of symtab entries */ unsigned short f_opthdr; /* sizeof(optional hdr) */ unsigned short f_flags; /* flags */ }; /* Bits for f_flags: * F_RELFLG relocation info stripped from file * F_EXEC file is executable (no unresolved external references) * F_LNNO line numbers stripped from file * F_LSYMS local symbols stripped from file * F_AR32WR file has byte ordering of an AR32WR machine (e.g. vax) */ #define F_RELFLG (0x0001) #define F_EXEC (0x0002) #define F_LNNO (0x0004) #define F_LSYMS (0x0008) #define I386MAGIC 0x14c #define I386AIXMAGIC 0x175 #define I386BADMAG(x) (((x).f_magic!=I386MAGIC) && (x).f_magic!=I386AIXMAGIC) #define FILHDR struct external_filehdr #define FILHSZ sizeof(FILHDR) /********************** AOUT "OPTIONAL HEADER" **********************/ typedef struct { unsigned short magic; /* type of file */ unsigned short vstamp; /* version stamp */ unsigned long tsize; /* text size in bytes, padded to FW bdry*/ unsigned long dsize; /* initialized data " " */ unsigned long bsize; /* uninitialized data " " */ unsigned long entry; /* entry pt. */ unsigned long text_start; /* base of text used for this file */ unsigned long data_start; /* base of data used for this file */ } AOUTHDR; typedef struct gnu_aout { unsigned long info; unsigned long tsize; unsigned long dsize; unsigned long bsize; unsigned long symsize; unsigned long entry; unsigned long txrel; unsigned long dtrel; } GNU_AOUT; #define AOUTSZ (sizeof(AOUTHDR)) #define OMAGIC 0404 /* object files, eg as output */ #define ZMAGIC 0413 /* demand load format, eg normal ld output */ #define STMAGIC 0401 /* target shlib */ #define SHMAGIC 0443 /* host shlib */ /********************** SECTION HEADER **********************/ struct external_scnhdr { char s_name[8]; /* section name */ unsigned long s_paddr; /* physical address, aliased s_nlib */ unsigned long s_vaddr; /* virtual address */ unsigned long s_size; /* section size */ unsigned long s_scnptr; /* file ptr to raw data for section */ unsigned long s_relptr; /* file ptr to relocation */ unsigned long s_lnnoptr; /* file ptr to line numbers */ unsigned short s_nreloc; /* number of relocation entries */ unsigned short s_nlnno; /* number of line number entries*/ unsigned long s_flags; /* flags */ }; #define SCNHDR struct external_scnhdr #define SCNHSZ sizeof(SCNHDR) /* * names of "special" sections */ #define _TEXT ".text" #define _DATA ".data" #define _BSS ".bss" #define _COMMENT ".comment" #define _LIB ".lib" /* * s_flags "type" */ #define STYP_TEXT (0x0020) /* section contains text only */ #define STYP_DATA (0x0040) /* section contains data only */ #define STYP_BSS (0x0080) /* section contains bss only */ /********************** LINE NUMBERS **********************/ /* 1 line number entry for every "breakpointable" source line in a section. * Line numbers are grouped on a per function basis; first entry in a function * grouping will have l_lnno = 0 and in place of physical address will be the * symbol table index of the function name. */ struct external_lineno { union { unsigned long l_symndx __attribute__((packed)); /* function name symbol index, iff l_lnno == 0 */ unsigned long l_paddr __attribute__((packed)); /* (physical) address of line number */ } l_addr; unsigned short l_lnno; /* line number */ }; #define LINENO struct external_lineno #define LINESZ sizeof(LINENO) /********************** SYMBOLS **********************/ #define E_SYMNMLEN 8 /* # characters in a symbol name */ #define E_FILNMLEN 14 /* # characters in a file name */ #define E_DIMNUM 4 /* # array dimensions in auxiliary entry */ struct external_syment { union { char e_name[E_SYMNMLEN]; struct { unsigned long e_zeroes __attribute__((packed)); unsigned long e_offset __attribute__((packed)); } e; } e; unsigned long e_value __attribute__((packed)); short e_scnum; unsigned short e_type; unsigned char e_sclass; unsigned char e_numaux; }; #define N_BTMASK (0xf) #define N_TMASK (0x30) #define N_BTSHFT (4) #define N_TSHIFT (2) union external_auxent { struct { unsigned long x_tagndx __attribute__((packed)); /* str, un, or enum tag indx */ union { struct { unsigned short x_lnno; /* declaration line number */ unsigned short x_size; /* str/union/array size */ } x_lnsz; unsigned long x_fsize __attribute__((packed)); /* size of function */ } x_misc; union { struct { /* if ISFCN, tag, or .bb */ unsigned long x_lnnoptr __attribute__((packed)); /* ptr to fcn line # */ unsigned long x_endndx __attribute__((packed)); /* entry ndx past block end */ } x_fcn; struct { /* if ISARY, up to 4 dimen. */ unsigned short x_dimen[E_DIMNUM]; } x_ary; } x_fcnary; unsigned short x_tvndx; /* tv index */ } x_sym; union { char x_fname[E_FILNMLEN]; struct { unsigned long x_zeroes __attribute__((packed)); unsigned long x_offset __attribute__((packed)); } x_n; } x_file; struct { unsigned long x_scnlen __attribute__((packed)); /* section length */ unsigned short x_nreloc; /* # relocation entries */ unsigned short x_nlinno; /* # line numbers */ } x_scn; struct { unsigned long x_tvfill __attribute__((packed)); /* tv fill value */ unsigned short x_tvlen; /* length of .tv */ unsigned short x_tvran[2]; /* tv range */ } x_tv; /* info about .tv section (in auxent of symbol .tv)) */ }; #define SYMENT struct external_syment #define SYMESZ sizeof(SYMENT) #define AUXENT union external_auxent #define AUXESZ sizeof(AUXENT) # define _ETEXT "etext" /* Relocatable symbols have number of the section in which they are defined, or one of the following: */ #define N_UNDEF ((short)0) /* undefined symbol */ #define N_ABS ((short)-1) /* value of symbol is absolute */ #define N_DEBUG ((short)-2) /* debugging symbol -- value is meaningless */ #define N_TV ((short)-3) /* indicates symbol needs preload transfer vector */ #define P_TV ((short)-4) /* indicates symbol needs postload transfer vector*/ /* * Type of a symbol, in low N bits of the word */ #define T_NULL 0 #define T_VOID 1 /* function argument (only used by compiler) */ #define T_CHAR 2 /* character */ #define T_SHORT 3 /* short integer */ #define T_INT 4 /* integer */ #define T_LONG 5 /* long integer */ #define T_FLOAT 6 /* floating point */ #define T_DOUBLE 7 /* double word */ #define T_STRUCT 8 /* structure */ #define T_UNION 9 /* union */ #define T_ENUM 10 /* enumeration */ #define T_MOE 11 /* member of enumeration*/ #define T_UCHAR 12 /* unsigned character */ #define T_USHORT 13 /* unsigned short */ #define T_UINT 14 /* unsigned integer */ #define T_ULONG 15 /* unsigned long */ #define T_LNGDBL 16 /* long double */ /* * derived types, in n_type */ #define DT_NON (0) /* no derived type */ #define DT_PTR (1) /* pointer */ #define DT_FCN (2) /* function */ #define DT_ARY (3) /* array */ #define BTYPE(x) ((x) & N_BTMASK) #define ISPTR(x) (((x) & N_TMASK) == (DT_PTR << N_BTSHFT)) #define ISFCN(x) (((x) & N_TMASK) == (DT_FCN << N_BTSHFT)) #define ISARY(x) (((x) & N_TMASK) == (DT_ARY << N_BTSHFT)) #define ISTAG(x) ((x)==C_STRTAG||(x)==C_UNTAG||(x)==C_ENTAG) #define DECREF(x) ((((x)>>N_TSHIFT)&~N_BTMASK)|((x)&N_BTMASK)) /********************** STORAGE CLASSES **********************/ /* This used to be defined as -1, but now n_sclass is unsigned. */ #define C_EFCN 0xff /* physical end of function */ #define C_NULL 0 #define C_AUTO 1 /* automatic variable */ #define C_EXT 2 /* external symbol */ #define C_STAT 3 /* static */ #define C_REG 4 /* register variable */ #define C_EXTDEF 5 /* external definition */ #define C_LABEL 6 /* label */ #define C_ULABEL 7 /* undefined label */ #define C_MOS 8 /* member of structure */ #define C_ARG 9 /* function argument */ #define C_STRTAG 10 /* structure tag */ #define C_MOU 11 /* member of union */ #define C_UNTAG 12 /* union tag */ #define C_TPDEF 13 /* type definition */ #define C_USTATIC 14 /* undefined static */ #define C_ENTAG 15 /* enumeration tag */ #define C_MOE 16 /* member of enumeration */ #define C_REGPARM 17 /* register parameter */ #define C_FIELD 18 /* bit field */ #define C_AUTOARG 19 /* auto argument */ #define C_LASTENT 20 /* dummy entry (end of block) */ #define C_BLOCK 100 /* ".bb" or ".eb" */ #define C_FCN 101 /* ".bf" or ".ef" */ #define C_EOS 102 /* end of structure */ #define C_FILE 103 /* file name */ #define C_LINE 104 /* line # reformatted as symbol table entry */ #define C_ALIAS 105 /* duplicate tag */ #define C_HIDDEN 106 /* ext symbol in dmert public lib */ /********************** RELOCATION DIRECTIVES **********************/ struct external_reloc { unsigned long r_vaddr __attribute__((packed)); unsigned long r_symndx __attribute__((packed)); unsigned short r_type; }; #define RELOC struct external_reloc #define RELSZ sizeof(RELOC) #define RELOC_REL32 20 /* 32-bit PC-relative address */ #define RELOC_ADDR32 6 /* 32-bit absolute address */ #define DEFAULT_DATA_SECTION_ALIGNMENT 4 #define DEFAULT_BSS_SECTION_ALIGNMENT 4 #define DEFAULT_TEXT_SECTION_ALIGNMENT 4 /* For new sections we havn't heard of before */ #define DEFAULT_SECTION_ALIGNMENT 4 #endif /* !_POSIX_SOURCE */ #endif /* !__STRICT_ANSI__ */ #endif /* !__dj_ENFORCE_ANSI_FREESTANDING */ #ifndef __dj_ENFORCE_FUNCTION_CALLS #endif /* !__dj_ENFORCE_FUNCTION_CALLS */ #ifdef __cplusplus } #endif #endif /* !__dj_include_coff_h_ */