340 lines
10 KiB
C
340 lines
10 KiB
C
/* 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_ */
|