mirror of
https://github.com/darlinghq/darling-gdb.git
synced 2024-11-25 21:19:54 +00:00
313 lines
9.6 KiB
C
313 lines
9.6 KiB
C
/*** coff information for we32k */
|
|
|
|
/********************** FILE HEADER **********************/
|
|
|
|
struct external_filehdr {
|
|
char f_magic[2]; /* magic number */
|
|
char f_nscns[2]; /* number of sections */
|
|
char f_timdat[4]; /* time & date stamp */
|
|
char f_symptr[4]; /* file pointer to symtab */
|
|
char f_nsyms[4]; /* number of symtab entries */
|
|
char f_opthdr[2]; /* sizeof(optional hdr) */
|
|
char f_flags[2]; /* 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 F_BM32B (0020000)
|
|
#define F_BM32MAU (0040000)
|
|
|
|
#define WE32KMAGIC 0x170 /* we32k sans transfer vector */
|
|
#define FBOMAGIC 0x170 /* we32k sans transfer vector */
|
|
#define MTVMAGIC 0x171 /* we32k with transfer vector */
|
|
#define RBOMAGIC 0x172 /* reserved */
|
|
#define WE32KBADMAG(x) (((x).f_magic != WE32KMAGIC) \
|
|
&& ((x).f_magic != FBOMAGIC) \
|
|
&& ((x).f_magic != RBOMAGIC) \
|
|
&& ((x).f_magic != MTVMAGIC))
|
|
|
|
#define FILHDR struct external_filehdr
|
|
#define FILHSZ sizeof(FILHDR)
|
|
|
|
|
|
/********************** AOUT "OPTIONAL HEADER" **********************/
|
|
|
|
|
|
typedef struct
|
|
{
|
|
char magic[2]; /* type of file */
|
|
char vstamp[2]; /* version stamp */
|
|
char tsize[4]; /* text size in bytes, padded to FW bdry*/
|
|
char dsize[4]; /* initialized data " " */
|
|
char bsize[4]; /* uninitialized data " " */
|
|
char entry[4]; /* entry pt. */
|
|
char text_start[4]; /* base of text used for this file */
|
|
char data_start[4]; /* base of data used for this file */
|
|
}
|
|
AOUTHDR;
|
|
|
|
#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_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 */
|
|
|
|
/********************** SECTION HEADER **********************/
|
|
|
|
|
|
struct external_scnhdr {
|
|
char s_name[8]; /* section name */
|
|
char s_paddr[4]; /* physical address, aliased s_nlib */
|
|
char s_vaddr[4]; /* virtual address */
|
|
char s_size[4]; /* section size */
|
|
char s_scnptr[4]; /* file ptr to raw data for section */
|
|
char s_relptr[4]; /* file ptr to relocation */
|
|
char s_lnnoptr[4]; /* file ptr to line numbers */
|
|
char s_nreloc[2]; /* number of relocation entries */
|
|
char s_nlnno[2]; /* number of line number entries*/
|
|
char s_flags[4]; /* flags */
|
|
};
|
|
|
|
/*
|
|
* names of "special" sections
|
|
*/
|
|
#define _TEXT ".text"
|
|
#define _DATA ".data"
|
|
#define _BSS ".bss"
|
|
#define _TV ".tv"
|
|
#define _INIT ".init"
|
|
#define _FINI ".fini"
|
|
|
|
/*
|
|
* s_flags "type"
|
|
*/
|
|
#define STYP_REG (0x0000) /* "regular": allocated, relocated, loaded */
|
|
#define STYP_DSECT (0x0001) /* "dummy": relocated only*/
|
|
#define STYP_NOLOAD (0x0002) /* "noload": allocated, relocated, not loaded */
|
|
#define STYP_GROUP (0x0004) /* "grouped": formed of input sections */
|
|
#define STYP_PAD (0x0008) /* "padding": not allocated, not relocated, loaded */
|
|
#define STYP_COPY (0x0010) /* "copy": for decision function used by field update; not allocated, not relocated,
|
|
loaded; reloc & lineno entries processed normally */
|
|
#define STYP_TEXT (0x0020) /* section contains text only */
|
|
#define S_SHRSEG (0x0020) /* In 3b Update files (output of ogen), sections which appear in SHARED segments of the Pfile
|
|
will have the S_SHRSEG flag set by ogen, to inform dufr that updating 1 copy of the proc. will
|
|
update all process invocations. */
|
|
#define STYP_DATA (0x0040) /* section contains data only */
|
|
#define STYP_BSS (0x0080) /* section contains bss only */
|
|
#define S_NEWFCN (0x0100) /* In a minimal file or an update file, a new function (as compared with a replaced function) */
|
|
#define STYP_INFO (0x0200) /* comment: not allocated not relocated, not loaded */
|
|
#define STYP_OVER (0x0400) /* overlay: relocated not allocated or loaded */
|
|
#define STYP_LIB (0x0800) /* for .lib: same as INFO */
|
|
|
|
#define SCNHDR struct external_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 external_lineno {
|
|
union {
|
|
char l_symndx[4]; /* function name symbol index, iff l_lnno == 0*/
|
|
char l_paddr[4]; /* (physical) address of line number */
|
|
} l_addr;
|
|
char l_lnno[2]; /* 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 {
|
|
char e_zeroes[4];
|
|
char e_offset[4];
|
|
} e;
|
|
} e;
|
|
char e_value[4];
|
|
char e_scnum[2];
|
|
char e_type[2];
|
|
char e_sclass[1];
|
|
char e_numaux[1];
|
|
};
|
|
|
|
/*
|
|
* 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 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 */
|
|
#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 N_BTMASK (0xf)
|
|
#define N_TMASK (0x30)
|
|
#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 external_auxent {
|
|
struct {
|
|
char x_tagndx[4]; /* str, un, or enum tag indx */
|
|
union {
|
|
struct {
|
|
char x_lnno[2]; /* declaration line number */
|
|
char x_size[2]; /* str/union/array size */
|
|
} x_lnsz;
|
|
char x_fsize[4]; /* size of function */
|
|
} x_misc;
|
|
union {
|
|
struct { /* if ISFCN, tag, or .bb */
|
|
char x_lnnoptr[4]; /* ptr to fcn line # */
|
|
char x_endndx[4]; /* entry ndx past block end */
|
|
} x_fcn;
|
|
struct { /* if ISARY, up to 4 dimen. */
|
|
char x_dimen[E_DIMNUM][2];
|
|
} x_ary;
|
|
} x_fcnary;
|
|
char x_tvndx[2]; /* tv index */
|
|
} x_sym;
|
|
|
|
union {
|
|
char x_fname[E_FILNMLEN];
|
|
struct {
|
|
char x_zeroes[4];
|
|
char x_offset[4];
|
|
} x_n;
|
|
} x_file;
|
|
|
|
struct {
|
|
char x_scnlen[4]; /* section length */
|
|
char x_nreloc[2]; /* # relocation entries */
|
|
char x_nlinno[2]; /* # line numbers */
|
|
} x_scn;
|
|
|
|
struct {
|
|
char x_tvfill[4]; /* tv fill value */
|
|
char x_tvlen[2]; /* length of .tv */
|
|
char x_tvran[2][2]; /* tv range */
|
|
} x_tv; /* info about .tv section (in auxent of symbol .tv)) */
|
|
|
|
|
|
};
|
|
|
|
#define SYMENT struct external_syment
|
|
#define SYMESZ 18
|
|
#define AUXENT union external_auxent
|
|
#define AUXESZ 18
|
|
|
|
|
|
# define _ETEXT "etext"
|
|
|
|
|
|
/********************** RELOCATION DIRECTIVES **********************/
|
|
|
|
|
|
|
|
struct external_reloc {
|
|
char r_vaddr[4];
|
|
char r_symndx[4];
|
|
char r_type[2];
|
|
};
|
|
|
|
|
|
#define RELOC struct external_reloc
|
|
#define RELSZ sizeof(RELOC)
|
|
|
|
#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
|