054862cfa1
for internalcoff, separately from the various external coff's. * amdcoff.h, bcs88kcoff.h, i386coff.h, intel-coff.h, m68kcoff.h, m88k-bcs.h: Prefix SYMNMLEN, FILNMLEN, and DIMNUM with E_'s for the external struct definitions. * ecoff.h: Remove these #define's, kludge no longer needed.
300 lines
8.3 KiB
C
Executable file
300 lines
8.3 KiB
C
Executable file
/*** coff information for 88k bcs */
|
|
|
|
#ifndef M88
|
|
#define M88
|
|
#endif
|
|
|
|
/********************** FILE HEADER **********************/
|
|
|
|
struct filehdr {
|
|
unsigned short f_magic; /* magic number */
|
|
unsigned short f_nscns; /* number of sections */
|
|
long f_timdat; /* time & date stamp */
|
|
long f_symptr; /* file pointer to symtab */
|
|
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 externel references)
|
|
* F_LNNO line nunbers 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 0000001
|
|
#define F_EXEC 0000002
|
|
#define F_LNNO 0000004
|
|
#define F_LSYMS 0000010
|
|
#define F_AR32WR 0000400
|
|
|
|
|
|
#define MC88MAGIC 0555 /* 88k BCS executable */
|
|
#define MC88DMAGIC 0541 /* DG/UX executable */
|
|
|
|
|
|
#define MC88BADMAG(x) (((x).f_magic!=MC88MAGIC) && ((x).f_magic!=MC88DMAGIC))
|
|
|
|
#define FILHDR struct filehdr
|
|
#define FILHSZ sizeof(FILHDR)
|
|
|
|
|
|
/********************** AOUT "OPTIONAL HEADER" **********************/
|
|
|
|
|
|
#define PAGEMAGIC3 0414 /* Split i&d, zero mapped */
|
|
typedef struct aouthdr {
|
|
short magic; /* type of file */
|
|
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;
|
|
|
|
|
|
/* compute size of a header */
|
|
|
|
#define AOUTSZ (sizeof(AOUTHDR))
|
|
|
|
/********************** STORAGE CLASSES **********************/
|
|
|
|
#define C_EFCN -1 /* 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_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 */
|
|
#define C_SHADOW 107 /* shadow symbol */
|
|
#define C_VERSION 108 /* coff version symbol */
|
|
|
|
|
|
/********************** SECTION HEADER **********************/
|
|
|
|
struct scnhdr {
|
|
char s_name[8]; /* section name */
|
|
long s_paddr; /* physical address, aliased s_nlib */
|
|
long s_vaddr; /* virtual address */
|
|
long s_size; /* section size */
|
|
long s_scnptr; /* file ptr to raw data for section */
|
|
long s_relptr; /* file ptr to relocation */
|
|
long s_lnnoptr; /* file ptr to line numbers */
|
|
long s_nreloc; /* number of relocation entries */
|
|
long s_nlnno; /* number of line number entries*/
|
|
long s_flags; /* flags */
|
|
};
|
|
|
|
/*
|
|
* names of "special" sections
|
|
*/
|
|
#define _TEXT ".text"
|
|
#define _DATA ".data"
|
|
#define _BSS ".bss"
|
|
|
|
/*
|
|
* s_flags "type"
|
|
*/
|
|
#define STYP_TEXT 0x20 /* section contains text only */
|
|
#define STYP_DATA 0x40 /* section contains data only */
|
|
#define STYP_BSS 0x80 /* section contains bss only */
|
|
|
|
#define SCNHDR struct scnhdr
|
|
#define SCNHSZ sizeof(SCNHDR)
|
|
|
|
|
|
/********************** 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 lineno{
|
|
union {
|
|
long l_symndx; /* function name symbol index, iff l_lnno == 0*/
|
|
long l_paddr; /* (physical) address of line number */
|
|
} l_addr;
|
|
|
|
long l_lnno;
|
|
|
|
};
|
|
|
|
#define LINENO struct 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 syment {
|
|
union {
|
|
char _n_name[E_SYMNMLEN]; /* old COFF version */
|
|
struct {
|
|
long _n_zeroes; /* new == 0 */
|
|
long _n_offset; /* offset into string table */
|
|
} _n_n;
|
|
char *_n_nptr[2]; /* allows for overlaying */
|
|
} _n;
|
|
long n_value; /* value of symbol */
|
|
short n_scnum; /* section number */
|
|
unsigned short n_type; /* type and derived type */
|
|
char n_sclass; /* storage class */
|
|
char n_numaux; /* number of aux. entries */
|
|
char pad2[2]; /* force alignment */
|
|
};
|
|
|
|
#define n_name _n._n_name
|
|
#define n_zeroes _n._n_n._n_zeroes
|
|
#define n_offset _n._n_n._n_offset
|
|
|
|
/*
|
|
* Relocatable symbols have number of the section in which they are defined,
|
|
* or one of the following:
|
|
*/
|
|
#define N_UNDEF 0 /* undefined symbol */
|
|
#define N_ABS -1 /* value of symbol is absolute */
|
|
#define N_DEBUG -2 /* debugging symbol -- symbol value is meaningless */
|
|
|
|
/*
|
|
* Type of a symbol, in low 4 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 */
|
|
|
|
|
|
|
|
/*
|
|
* derived types
|
|
*/
|
|
#define DT_NON 0
|
|
#define DT_PTR 1 /* pointer */
|
|
#define DT_FCN 2 /* function */
|
|
#define DT_ARY 3 /* array */
|
|
|
|
#define N_BTMASK 017
|
|
#define N_TMASK 060
|
|
#define N_BTSHFT 4
|
|
#define N_TSHIFT 2
|
|
|
|
#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 DECREF(x) ((((x)>>N_TSHIFT)&~N_BTMASK)|((x)&N_BTMASK))
|
|
|
|
union auxent {
|
|
struct {
|
|
long x_tagndx; /* str, un, or enum tag indx */
|
|
union {
|
|
struct {
|
|
unsigned long x_lnno; /* declaration line number */
|
|
unsigned long x_size; /* str/union/array 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; /* 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 {
|
|
long x_zeroes;
|
|
long x_offset;
|
|
} x_n;
|
|
} x_file;
|
|
|
|
struct {
|
|
long x_scnlen; /* section length */
|
|
unsigned long x_nreloc; /* # relocation entries */
|
|
unsigned long x_nlinno; /* # line numbers */
|
|
} x_scn;
|
|
|
|
|
|
};
|
|
|
|
#define SYMENT struct syment
|
|
#define SYMESZ sizeof(SYMENT)
|
|
#define AUXENT union auxent
|
|
#define AUXESZ sizeof(AUXENT)
|
|
|
|
|
|
/********************** RELOCATION DIRECTIVES **********************/
|
|
|
|
struct reloc {
|
|
long r_vaddr; /* Virtual address of reference */
|
|
long r_symndx; /* Index into symbol table */
|
|
unsigned short r_type; /* Relocation type */
|
|
unsigned short r_offset;/* Hi 16 bits of constant */
|
|
};
|
|
|
|
/* Only values of r_type GNU/88k cares about */
|
|
#define R_PCR16L 128
|
|
#define R_PCR26L 129
|
|
#define R_VRT16 130
|
|
#define R_HVRT16 131
|
|
#define R_LVRT16 132
|
|
#define R_VRT32 133
|
|
|
|
|
|
|
|
|
|
#define RELOC struct reloc
|
|
#define RELSZ sizeof(RELOC)
|
|
|
|
#define DEFAULT_SECTION_ALIGNMENT 8 /* double word */
|