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