Alien-TinyCC
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/**************************************************************************/
/* 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) */
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