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255 lines
6.5 KiB
C
Executable File
255 lines
6.5 KiB
C
Executable File
/*** coff information for 80960. Origins: Intel corp, natch. */
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/* NOTE: Tagentries (cf TAGBITS) are no longer used by the 960 */
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/********************** FILE HEADER **********************/
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struct external_filehdr {
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char f_magic[2]; /* magic number */
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char f_nscns[2]; /* number of sections */
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char f_timdat[4]; /* time & date stamp */
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char f_symptr[4]; /* file pointer to symtab */
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char f_nsyms[4]; /* number of symtab entries */
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char f_opthdr[2]; /* sizeof(optional hdr) */
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char f_flags[2]; /* flags */
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};
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#define OMAGIC (0407) /* old impure format. data immediately
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follows text. both sections are rw. */
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#define NMAGIC (0410) /* split i&d, read-only text */
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/*
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* Intel 80960 (I960) processor flags.
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* F_I960TYPE == mask for processor type field.
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*/
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#define F_I960TYPE (0xf000)
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#define F_I960CORE (0x1000)
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#define F_I960KB (0x2000)
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#define F_I960SB (0x2000)
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#define F_I960MC (0x3000)
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#define F_I960XA (0x4000)
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#define F_I960CA (0x5000)
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#define F_I960KA (0x6000)
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#define F_I960SA (0x6000)
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/** i80960 Magic Numbers
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*/
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#define I960ROMAGIC (0x160) /* read-only text segments */
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#define I960RWMAGIC (0x161) /* read-write text segments */
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#define I960BADMAG(x) (((x).f_magic!=I960ROMAGIC) && ((x).f_magic!=I960RWMAGIC))
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#define FILHDR struct external_filehdr
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#define FILHSZ 20
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/********************** AOUT "OPTIONAL HEADER" **********************/
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typedef struct {
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unsigned long phys_addr;
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unsigned long bitarray;
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} TAGBITS;
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typedef struct
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{
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char magic[2]; /* type of file */
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char vstamp[2]; /* version stamp */
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char tsize[4]; /* text size in bytes, padded to FW bdry*/
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char dsize[4]; /* initialized data " " */
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char bsize[4]; /* uninitialized data " " */
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char entry[4]; /* entry pt. */
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char text_start[4]; /* base of text used for this file */
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char data_start[4]; /* base of data used for this file */
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char tagentries[4]; /* number of tag entries to follow */
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}
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AOUTHDR;
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/* return a pointer to the tag bits array */
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#define TAGPTR(aout) ((TAGBITS *) (&(aout.tagentries)+1))
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/* compute size of a header */
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/*#define AOUTSZ(aout) (sizeof(AOUTHDR)+(aout.tagentries*sizeof(TAGBITS)))*/
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#define AOUTSZ (sizeof(AOUTHDR))
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/********************** SECTION HEADER **********************/
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struct external_scnhdr {
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char s_name[8]; /* section name */
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char s_paddr[4]; /* physical address, aliased s_nlib */
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char s_vaddr[4]; /* virtual address */
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char s_size[4]; /* section size */
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char s_scnptr[4]; /* file ptr to raw data for section */
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char s_relptr[4]; /* file ptr to relocation */
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char s_lnnoptr[4]; /* file ptr to line numbers */
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char s_nreloc[2]; /* number of relocation entries */
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char s_nlnno[2]; /* number of line number entries*/
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char s_flags[4]; /* flags */
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char s_align[4]; /* section alignment */
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};
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#define SCNHDR struct external_scnhdr
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#define SCNHSZ sizeof(SCNHDR)
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/*
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* names of "special" sections
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*/
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#define _TEXT ".text"
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#define _DATA ".data"
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#define _BSS ".bss"
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/********************** LINE NUMBERS **********************/
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/* 1 line number entry for every "breakpointable" source line in a section.
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* Line numbers are grouped on a per function basis; first entry in a function
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* grouping will have l_lnno = 0 and in place of physical address will be the
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* symbol table index of the function name.
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*/
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struct external_lineno {
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union {
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char l_symndx[4]; /* function name symbol index, iff l_lnno == 0*/
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char l_paddr[4]; /* (physical) address of line number */
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} l_addr;
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char l_lnno[2]; /* line number */
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char padding[2]; /* force alignment */
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};
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#define LINENO struct external_lineno
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#define LINESZ 8
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/********************** SYMBOLS **********************/
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#define SYMNMLEN 8 /* # characters in a symbol name */
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#define FILNMLEN 14 /* # characters in a file name */
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#define DIMNUM 4 /* # array dimensions in auxiliary entry */
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struct external_syment
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{
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union {
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char e_name[SYMNMLEN];
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struct {
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char e_zeroes[4];
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char e_offset[4];
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} e;
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} e;
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char e_value[4];
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char e_scnum[2];
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char e_flags[2];
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char e_type[4];
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char e_sclass[1];
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char e_numaux[1];
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char pad2[2];
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};
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#define N_BTMASK (0x1f)
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#define N_TMASK (0x60)
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#define N_BTSHFT (5)
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#define N_TSHIFT (2)
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union external_auxent {
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struct {
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char x_tagndx[4]; /* str, un, or enum tag indx */
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union {
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struct {
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char x_lnno[2]; /* declaration line number */
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char x_size[2]; /* str/union/array size */
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} x_lnsz;
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char x_fsize[4]; /* size of function */
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} x_misc;
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union {
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struct { /* if ISFCN, tag, or .bb */
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char x_lnnoptr[4]; /* ptr to fcn line # */
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char x_endndx[4]; /* entry ndx past block end */
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} x_fcn;
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struct { /* if ISARY, up to 4 dimen. */
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char x_dimen[DIMNUM][2];
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} x_ary;
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} x_fcnary;
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char x_tvndx[2]; /* tv index */
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} x_sym;
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union {
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char x_fname[FILNMLEN];
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struct {
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char x_zeroes[4];
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char x_offset[4];
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} x_n;
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} x_file;
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struct {
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char x_scnlen[4]; /* section length */
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char x_nreloc[2]; /* # relocation entries */
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char x_nlinno[2]; /* # line numbers */
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} x_scn;
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struct {
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char x_tvfill[4]; /* tv fill value */
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char x_tvlen[2]; /* length of .tv */
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char x_tvran[2][2]; /* tv range */
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} x_tv; /* info about .tv section (in auxent of symbol .tv)) */
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/******************************************
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* I960-specific *2nd* aux. entry formats
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******************************************/
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struct {
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/* This is a very old typo that keeps getting propagated. */
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#define x_stdindx x_stindx
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char x_stindx[4]; /* sys. table entry */
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} x_sc; /* system call entry */
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struct {
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char x_balntry[4]; /* BAL entry point */
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} x_bal; /* BAL-callable function */
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struct {
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char x_timestamp[4]; /* time stamp */
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char x_idstring[20]; /* producer identity string */
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} x_ident; /* Producer ident info */
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};
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#define SYMENT struct external_syment
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#define SYMESZ sizeof(SYMENT) /* FIXME - calc by hand */
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#define AUXENT union external_auxent
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#define AUXESZ sizeof(AUXENT) /* FIXME - calc by hand */
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# define _ETEXT "_etext"
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/********************** RELOCATION DIRECTIVES **********************/
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struct external_reloc {
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char r_vaddr[4];
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char r_symndx[4];
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char r_type[2];
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char pad[2];
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};
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/* Relevent values for r_type and i960. Would someone please document them */
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#define RELOC struct external_reloc
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#define RELSZ 12
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#define DEFAULT_DATA_SECTION_ALIGNMENT 4
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#define DEFAULT_BSS_SECTION_ALIGNMENT 4
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#define DEFAULT_TEXT_SECTION_ALIGNMENT 16
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/* For new sections we havn't heard of before */
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#define DEFAULT_SECTION_ALIGNMENT 4
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