0,0 → 1,446 |
/**************************************************************************/ |
/* COFF.H */ |
/* COFF data structures and related definitions used by the linker */ |
/**************************************************************************/ |
|
/*------------------------------------------------------------------------*/ |
/* COFF 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 */ |
unsigned short f_TargetID; /* for C6x = 0x0099 */ |
}; |
|
/*------------------------------------------------------------------------*/ |
/* File header flags */ |
/*------------------------------------------------------------------------*/ |
#define F_RELFLG 0x01 /* relocation info stripped from file */ |
#define F_EXEC 0x02 /* file is executable (no unresolved refs) */ |
#define F_LNNO 0x04 /* line nunbers stripped from file */ |
#define F_LSYMS 0x08 /* local symbols stripped from file */ |
#define F_GSP10 0x10 /* 34010 version */ |
#define F_GSP20 0x20 /* 34020 version */ |
#define F_SWABD 0x40 /* bytes swabbed (in names) */ |
#define F_AR16WR 0x80 /* byte ordering of an AR16WR (PDP-11) */ |
#define F_LITTLE 0x100 /* byte ordering of an AR32WR (vax) */ |
#define F_BIG 0x200 /* byte ordering of an AR32W (3B, maxi) */ |
#define F_PATCH 0x400 /* contains "patch" list in optional header */ |
#define F_NODF 0x400 |
|
#define F_VERSION (F_GSP10 | F_GSP20) |
#define F_BYTE_ORDER (F_LITTLE | F_BIG) |
#define FILHDR struct filehdr |
|
//#define FILHSZ sizeof(FILHDR) |
#define FILHSZ 22 // above rounds to align on 4 bytes which causes problems |
|
#define COFF_C67_MAGIC 0x00c2 |
|
/*------------------------------------------------------------------------*/ |
/* Macros to recognize magic numbers */ |
/*------------------------------------------------------------------------*/ |
#define ISMAGIC(x) (((unsigned short)(x))==(unsigned short)magic) |
#define ISARCHIVE(x) ((((unsigned short)(x))==(unsigned short)ARTYPE)) |
#define BADMAGIC(x) (((unsigned short)(x) & 0x8080) && !ISMAGIC(x)) |
|
|
/*------------------------------------------------------------------------*/ |
/* OPTIONAL FILE HEADER */ |
/*------------------------------------------------------------------------*/ |
typedef struct aouthdr { |
short magic; /* see magic.h */ |
short vstamp; /* version stamp */ |
long tsize; /* text size in bytes, padded to FW bdry*/ |
long dsize; /* initialized data " " */ |
long bsize; /* uninitialized data " " */ |
long entrypt; /* entry pt. */ |
long text_start; /* base of text used for this file */ |
long data_start; /* base of data used for this file */ |
} AOUTHDR; |
|
#define AOUTSZ sizeof(AOUTHDR) |
|
/*----------------------------------------------------------------------*/ |
/* When a UNIX aout header is to be built in the optional header, */ |
/* the following magic numbers can appear in that header: */ |
/* */ |
/* AOUT1MAGIC : default : readonly sharable text segment */ |
/* AOUT2MAGIC: : writable text segment */ |
/* PAGEMAGIC : : configured for paging */ |
/*----------------------------------------------------------------------*/ |
#define AOUT1MAGIC 0410 |
#define AOUT2MAGIC 0407 |
#define PAGEMAGIC 0413 |
|
|
/*------------------------------------------------------------------------*/ |
/* COMMON ARCHIVE FILE STRUCTURES */ |
/* */ |
/* ARCHIVE File Organization: */ |
/* _______________________________________________ */ |
/* |__________ARCHIVE_MAGIC_STRING_______________| */ |
/* |__________ARCHIVE_FILE_MEMBER_1______________| */ |
/* | | */ |
/* | Archive File Header "ar_hdr" | */ |
/* |.............................................| */ |
/* | Member Contents | */ |
/* | 1. External symbol directory | */ |
/* | 2. Text file | */ |
/* |_____________________________________________| */ |
/* |________ARCHIVE_FILE_MEMBER_2________________| */ |
/* | "ar_hdr" | */ |
/* |.............................................| */ |
/* | Member Contents (.o or text file) | */ |
/* |_____________________________________________| */ |
/* | . . . | */ |
/* | . . . | */ |
/* | . . . | */ |
/* |_____________________________________________| */ |
/* |________ARCHIVE_FILE_MEMBER_n________________| */ |
/* | "ar_hdr" | */ |
/* |.............................................| */ |
/* | Member Contents | */ |
/* |_____________________________________________| */ |
/* */ |
/*------------------------------------------------------------------------*/ |
|
#define COFF_ARMAG "!<arch>\n" |
#define SARMAG 8 |
#define ARFMAG "`\n" |
|
struct ar_hdr /* archive file member header - printable ascii */ |
{ |
char ar_name[16]; /* file member name - `/' terminated */ |
char ar_date[12]; /* file member date - decimal */ |
char ar_uid[6]; /* file member user id - decimal */ |
char ar_gid[6]; /* file member group id - decimal */ |
char ar_mode[8]; /* file member mode - octal */ |
char ar_size[10]; /* file member size - decimal */ |
char ar_fmag[2]; /* ARFMAG - string to end header */ |
}; |
|
|
/*------------------------------------------------------------------------*/ |
/* SECTION HEADER */ |
/*------------------------------------------------------------------------*/ |
struct scnhdr { |
char s_name[8]; /* section name */ |
long s_paddr; /* physical address */ |
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 */ |
unsigned int s_nreloc; /* number of relocation entries */ |
unsigned int s_nlnno; /* number of line number entries */ |
unsigned int s_flags; /* flags */ |
unsigned short s_reserved; /* reserved byte */ |
unsigned short s_page; /* memory page id */ |
}; |
|
#define SCNHDR struct scnhdr |
#define SCNHSZ sizeof(SCNHDR) |
|
/*------------------------------------------------------------------------*/ |
/* Define constants for names of "special" sections */ |
/*------------------------------------------------------------------------*/ |
//#define _TEXT ".text" |
#define _DATA ".data" |
#define _BSS ".bss" |
#define _CINIT ".cinit" |
#define _TV ".tv" |
|
/*------------------------------------------------------------------------*/ |
/* The low 4 bits of s_flags is used as a section "type" */ |
/*------------------------------------------------------------------------*/ |
#define STYP_REG 0x00 /* "regular" : allocated, relocated, loaded */ |
#define STYP_DSECT 0x01 /* "dummy" : not allocated, relocated, not loaded */ |
#define STYP_NOLOAD 0x02 /* "noload" : allocated, relocated, not loaded */ |
#define STYP_GROUP 0x04 /* "grouped" : formed of input sections */ |
#define STYP_PAD 0x08 /* "padding" : not allocated, not relocated, loaded */ |
#define STYP_COPY 0x10 /* "copy" : used for C init tables - |
not allocated, relocated, |
loaded; reloc & lineno |
entries processed normally */ |
#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 STYP_ALIGN 0x100 /* align flag passed by old version assemblers */ |
#define ALIGN_MASK 0x0F00 /* part of s_flags that is used for align vals */ |
#define ALIGNSIZE(x) (1 << ((x & ALIGN_MASK) >> 8)) |
|
|
/*------------------------------------------------------------------------*/ |
/* RELOCATION ENTRIES */ |
/*------------------------------------------------------------------------*/ |
struct reloc |
{ |
long r_vaddr; /* (virtual) address of reference */ |
short r_symndx; /* index into symbol table */ |
unsigned short r_disp; /* additional bits for address calculation */ |
unsigned short r_type; /* relocation type */ |
}; |
|
#define RELOC struct reloc |
#define RELSZ 10 /* sizeof(RELOC) */ |
|
/*--------------------------------------------------------------------------*/ |
/* define all relocation types */ |
/*--------------------------------------------------------------------------*/ |
|
#define R_ABS 0 /* absolute address - no relocation */ |
#define R_DIR16 01 /* UNUSED */ |
#define R_REL16 02 /* UNUSED */ |
#define R_DIR24 04 /* UNUSED */ |
#define R_REL24 05 /* 24 bits, direct */ |
#define R_DIR32 06 /* UNUSED */ |
#define R_RELBYTE 017 /* 8 bits, direct */ |
#define R_RELWORD 020 /* 16 bits, direct */ |
#define R_RELLONG 021 /* 32 bits, direct */ |
#define R_PCRBYTE 022 /* 8 bits, PC-relative */ |
#define R_PCRWORD 023 /* 16 bits, PC-relative */ |
#define R_PCRLONG 024 /* 32 bits, PC-relative */ |
#define R_OCRLONG 030 /* GSP: 32 bits, one's complement direct */ |
#define R_GSPPCR16 031 /* GSP: 16 bits, PC relative (in words) */ |
#define R_GSPOPR32 032 /* GSP: 32 bits, direct big-endian */ |
#define R_PARTLS16 040 /* Brahma: 16 bit offset of 24 bit address*/ |
#define R_PARTMS8 041 /* Brahma: 8 bit page of 24 bit address */ |
#define R_PARTLS7 050 /* DSP: 7 bit offset of 16 bit address */ |
#define R_PARTMS9 051 /* DSP: 9 bit page of 16 bit address */ |
#define R_REL13 052 /* DSP: 13 bits, direct */ |
|
|
/*------------------------------------------------------------------------*/ |
/* LINE NUMBER ENTRIES */ |
/*------------------------------------------------------------------------*/ |
struct lineno |
{ |
union |
{ |
long l_symndx ; /* sym. table index of function name |
iff l_lnno == 0 */ |
long l_paddr ; /* (physical) address of line number */ |
} l_addr ; |
unsigned short l_lnno ; /* line number */ |
}; |
|
#define LINENO struct lineno |
#define LINESZ 6 /* sizeof(LINENO) */ |
|
|
/*------------------------------------------------------------------------*/ |
/* 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 /* dummy sclass for line number entry */ |
#define C_ALIAS 105 /* duplicate tag */ |
#define C_HIDDEN 106 /* special storage class for external */ |
/* symbols in dmert public libraries */ |
|
/*------------------------------------------------------------------------*/ |
/* SYMBOL TABLE ENTRIES */ |
/*------------------------------------------------------------------------*/ |
|
#define SYMNMLEN 8 /* Number of characters in a symbol name */ |
#define FILNMLEN 14 /* Number of characters in a file name */ |
#define DIMNUM 4 /* Number of array dimensions in auxiliary entry */ |
|
|
struct syment |
{ |
union |
{ |
char _n_name[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 */ |
}; |
|
#define n_name _n._n_name |
#define n_nptr _n._n_nptr[1] |
#define n_zeroes _n._n_n._n_zeroes |
#define n_offset _n._n_n._n_offset |
|
/*------------------------------------------------------------------------*/ |
/* Relocatable symbols have a section number of the */ |
/* section in which they are defined. Otherwise, section */ |
/* numbers have the following meanings: */ |
/*------------------------------------------------------------------------*/ |
#define N_UNDEF 0 /* undefined symbol */ |
#define N_ABS -1 /* value of symbol is absolute */ |
#define N_DEBUG -2 /* special debugging symbol */ |
#define N_TV (unsigned short)-3 /* needs transfer vector (preload) */ |
#define P_TV (unsigned short)-4 /* needs transfer vector (postload) */ |
|
|
/*------------------------------------------------------------------------*/ |
/* The fundamental type of a symbol packed into the low */ |
/* 4 bits of the word. */ |
/*------------------------------------------------------------------------*/ |
#define _EF ".ef" |
|
#define T_NULL 0 /* no type info */ |
#define T_ARG 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 are: */ |
/*------------------------------------------------------------------------*/ |
#define DT_NON 0 /* no derived type */ |
#define DT_PTR 1 /* pointer */ |
#define DT_FCN 2 /* function */ |
#define DT_ARY 3 /* array */ |
|
#define MKTYPE(basic, d1,d2,d3,d4,d5,d6) \ |
((basic) | ((d1) << 4) | ((d2) << 6) | ((d3) << 8) |\ |
((d4) << 10) | ((d5) << 12) | ((d6) << 14)) |
|
/*------------------------------------------------------------------------*/ |
/* type packing constants and macros */ |
/*------------------------------------------------------------------------*/ |
#define N_BTMASK_COFF 017 |
#define N_TMASK_COFF 060 |
#define N_TMASK1_COFF 0300 |
#define N_TMASK2_COFF 0360 |
#define N_BTSHFT_COFF 4 |
#define N_TSHIFT_COFF 2 |
|
#define BTYPE_COFF(x) ((x) & N_BTMASK_COFF) |
#define ISINT(x) (((x) >= T_CHAR && (x) <= T_LONG) || \ |
((x) >= T_UCHAR && (x) <= T_ULONG) || (x) == T_ENUM) |
#define ISFLT_COFF(x) ((x) == T_DOUBLE || (x) == T_FLOAT) |
#define ISPTR_COFF(x) (((x) & N_TMASK_COFF) == (DT_PTR << N_BTSHFT_COFF)) |
#define ISFCN_COFF(x) (((x) & N_TMASK_COFF) == (DT_FCN << N_BTSHFT_COFF)) |
#define ISARY_COFF(x) (((x) & N_TMASK_COFF) == (DT_ARY << N_BTSHFT_COFF)) |
#define ISTAG_COFF(x) ((x)==C_STRTAG || (x)==C_UNTAG || (x)==C_ENTAG) |
|
#define INCREF_COFF(x) ((((x)&~N_BTMASK_COFF)<<N_TSHIFT_COFF)|(DT_PTR<<N_BTSHFT_COFF)|(x&N_BTMASK_COFF)) |
#define DECREF_COFF(x) ((((x)>>N_TSHIFT_COFF)&~N_BTMASK_COFF)|((x)&N_BTMASK_COFF)) |
|
|
/*------------------------------------------------------------------------*/ |
/* AUXILIARY SYMBOL ENTRY */ |
/*------------------------------------------------------------------------*/ |
union auxent |
{ |
struct |
{ |
long x_tagndx; /* 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; |
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[DIMNUM]; |
} x_ary; |
} x_fcnary; |
unsigned short x_regcount; /* number of registers used by func */ |
} x_sym; |
struct |
{ |
char x_fname[FILNMLEN]; |
} x_file; |
struct |
{ |
long x_scnlen; /* section length */ |
unsigned short x_nreloc; /* number of relocation entries */ |
unsigned short x_nlinno; /* number of line numbers */ |
} x_scn; |
}; |
|
#define SYMENT struct syment |
#define SYMESZ 18 /* sizeof(SYMENT) */ |
|
#define AUXENT union auxent |
#define AUXESZ 18 /* sizeof(AUXENT) */ |
|
/*------------------------------------------------------------------------*/ |
/* NAMES OF "SPECIAL" SYMBOLS */ |
/*------------------------------------------------------------------------*/ |
#define _STEXT ".text" |
#define _ETEXT "etext" |
#define _SDATA ".data" |
#define _EDATA "edata" |
#define _SBSS ".bss" |
#define _END "end" |
#define _CINITPTR "cinit" |
|
/*--------------------------------------------------------------------------*/ |
/* ENTRY POINT SYMBOLS */ |
/*--------------------------------------------------------------------------*/ |
#define _START "_start" |
#define _MAIN "_main" |
/* _CSTART "_c_int00" (defined in params.h) */ |
|
|
#define _TVORIG "_tvorig" |
#define _TORIGIN "_torigin" |
#define _DORIGIN "_dorigin" |
|
#define _SORIGIN "_sorigin" |