/* * coff.h * Common Object File Format (COFF) header for COHERENT. */ /* File header. */ typedef struct filehdr { unsigned short f_magic; /* Magic number */ unsigned short f_nscns; /* Number of sections */ long f_timdat; /* Time and date */ long f_symptr; /* Seek to symbol table */ long f_nsyms; /* Number of symbols */ unsigned short f_opthdr; /* Optional header size */ unsigned short f_flags; /* Flags */ } FILHDR; #define FILHSZ sizeof(FILHDR) /* Magic number. */ #define I386MAGIC 0x14C /* Intel iAPX 80386 */ #define C_386_MAGIC 0x14C /* Intel iAPX 80386 */ /* * This is just a short version of this macro. We really ought to define * all the other magic numbers as well. */ #define ISCOFF(x) ((x) == C_386_MAGIC) /* Flags for f_flags field. */ #define F_RELFLG 0x0001 /* No relocation info */ #define F_EXEC 0x0002 /* Executable */ #define F_LNNO 0x0004 /* No line numbers */ #define F_LSYMS 0x0008 /* No local symbols */ #define F_MINMAL 0x0010 /* product of strip */ #define F_AR32WR 0x0100 /* i80x86 byte order */ #define F_KER 0x0800 /* Loadable driver */ /* Optional header. */ typedef struct aouthdr { short magic; /* AOUT_MAGIC */ short vstamp; /* version stamp */ long tsize; /* .text size in bytes */ long dsize; /* .data size in bytes */ long bsize; /* .bss size in bytes */ long entry; /* entry point */ long text_start; /* base of .text data */ long data_start; /* base of .data data */ } AOUTHDR; /* Magic numbers for aouthdr. Coherent only supports Z_MAGIC */ #define O_MAGIC 0x107 /* Text and data are contiguous text not shared */ #define N_MAGIC 0x108 /* .data starts at seg after .text .text is protected */ #define I_MAGIC 0x109 /* sep id */ #define Z_MAGIC 0x10B /* Text and data aligned within a.out for direct page */ /* Section header. */ typedef struct scnhdr { char s_name[8]; /* Section name */ long s_paddr; /* Physical address */ long s_vaddr; /* Virtual address */ long s_size; /* Size */ long s_scnptr; /* Data pointer */ long s_relptr; /* Reloc pointer */ long s_lnnoptr; /* Line number pointer */ unsigned short s_nreloc; /* Reloc entries */ unsigned short s_nlnno; /* Line number entries */ long s_flags; /* Flags */ } SCNHDR; #define SCNHSZ sizeof(SCNHDR) /* Names of special sections */ #define _TEXT ".text" #define _DATA ".data" #define _BSS ".bss" #define _TV ".tv" #define _INIT ".init" #define _FINI ".fini" /* Flags for s_flags field. */ #define STYP_TEXT 0x20L /* Code segment */ #define STYP_DATA 0x40L /* Data segment */ #define STYP_BSS 0x80L /* BSS segment */ /* Relocation items. */ typedef struct reloc { long r_vaddr; /* Address (where) */ long r_symndx; /* Symbol index (what) */ unsigned short r_type; /* Type (how) */ } RELOC; #define RELSZ 10 /* sizeof(RELOC) */ /* Relocation types. */ #define R_DIR8 0x07 /* 8-bit direct */ #define R_DIR16 0x01 /* 16-bit direct */ #define R_DIR32 0x06 /* 32-bit direct */ #define R_RELBYTE 0x0f /* 8 bit direct */ #define R_RELWORD 0x10 /* 16 bit direct */ #define R_RELLONG 0x11 /* 32 bit direct */ #define R_PCRBYTE 0x12 /* 8-bit PC-relative */ #define R_PCRWORD 0x13 /* 16-bit PC-relative */ #define R_PCRLONG 0x14 /* 32-bit PC-relative */ #define R_NONREL 0x00 /* fake record for ld -r */ /* Line number. */ typedef struct lineno { union { long l_symndx; /* sym table ix of fun name */ long l_paddr; /* physical addr */ } l_addr; unsigned short l_lnno; /* line number or 0 for fun */ } LINENO; #define LINESZ 6 /* sizeof(LINENO) */ /* Symbol table. */ #define SYMNMLEN 8 /* Symbol name length */ #define FILNMLEN 14 /* Characters in a file name */ #define DIMNUM 4 /* dimensions in aux entry */ typedef struct syment { union { char _n_name[SYMNMLEN]; /* Name */ struct { long _n_zeroes; /* If name[0-3] zero, */ long _n_offset; /* string table offset */ } _n_n; char *_n_nptr[2]; } _n; long n_value; /* Value */ short n_scnum; /* Section number */ unsigned short n_type; /* Type */ char n_sclass; /* Storage class */ char n_numaux; /* Auxilliary entries */ } SYMENT; #define SYMESZ 18 /* sizeof(SYMENT) */ #define n_name _n._n_name #define n_zeroes _n._n_n._n_zeroes #define n_offset _n._n_n._n_offset /* Special section numbers */ #define N_UNDEF 0 /* undefined symbol */ #define N_ABS -1 /* absolute symbol */ #define N_DEBUG -2 /* special debugging symbol */ #define N_TV -3 /* symbol needs transfer vector (preload) */ #define P_TV -4 /* symbol needs transfer vector (postload) */ /* Storage classes. */ #define C_EFCN -1 /* end of function */ #define C_NULL 0 /* none given */ #define C_AUTO 1 /* automatic variable */ #define C_EXT 2 /* External */ #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 /* typedef */ #define C_USTATIC 14 /* undefined static */ #define C_ENTAG 15 /* enum tag */ #define C_MOE 16 /* member of enum */ #define C_REGPARM 17 /* register parm */ #define C_FIELD 18 /* bit field */ #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 */ /* is x a tag */ #define ISTAG(x) (C_STRTAG==(x) || C_UNTAG==(x) || C_ENTAG==(x)) /* fundimental type */ #define T_NULL 0 #define T_ARG 1 #define T_CHAR 2 #define T_SHORT 3 #define T_INT 4 #define T_LONG 5 #define T_FLOAT 6 #define T_DOUBLE 7 #define T_STRUCT 8 #define T_UNION 9 #define T_ENUM 10 #define T_MOE 11 /* member of enumeration */ #define T_UCHAR 12 #define T_USHORT 13 #define T_UINT 14 #define T_ULONG 15 /* Derived Types in n_type */ #define DT_NON 0 /* non derived type */ #define DT_PTR 0x10 /* pointer */ #define DT_FCN 0x20 /* function */ #define DT_ARY 0x30 /* array */ /* Type packing constants */ #define N_BTMASK 0x15 /* Mask for basic type */ #define N_TMASK 0x30 /* Derived type mask */ #define N_TSHIFT 2 /* Shift to get at more derivations */ /* Type processing macros */ #define BTYPE(x) ((x) & N_BTMASK) /* Basic type of x */ #define ISPTR(x) (DT_PTR == ((x) & N_TMASK)) /* Is x a pointer */ #define ISFCN(x) (DT_FCN == ((x) & N_TMASK)) /* Is x a function */ #define ISARY(x) (DT_ARY == ((x) & N_TMASK)) /* Is x an array */ #define INCREF(x) ((((x)&~N_BTMASK)<<N_TSHIFT)|DT_PTR|((x)&N_BTMASK)) #define DECREF(x) ((((x)>>N_TSHIFT)&~N_BTMASK)|((x)&N_BTMASK)) /* Aux symbols */ typedef union auxent { struct { long x_tagndx; /* struct, union or enum tag index */ union { struct { unsigned short x_lnno; /* declaration line */ unsigned short x_size; /* size */ } x_lnsz; long x_fsize; /* size of function */ } x_misc; union { struct { /* if ISFCN tag or .bb */ long x_lnnoptr; /* ptr to fcn line # */ long x_endndx; /* index past block */ } x_fcn; struct { /* if ISARY */ unsigned short x_dimen[DIMNUM]; } x_ary; } x_fcnary; unsigned short x_tvndx; /* tv index */ } x_sym; struct { char x_fname[FILNMLEN]; } x_file; struct { long x_scnlen; /* section length */ unsigned short x_nreloc; /* reloc entrys */ unsigned short x_nlinno; /* line number entries */ } x_scn; } AUXENT; #define AUXESZ 18 /* sizeof(auxent) */ /* end of coff.h */