229 lines
6.6 KiB
C
229 lines
6.6 KiB
C
/*** coff information for TI TMS320C80 (MVP) */
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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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char f_target_id[2]; /* target id (TIc80 specific) */
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};
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#define TIC80_ARCH_MAGIC 0x0C1 /* Goes in the file header magic number field */
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#define TIC80MAGIC 0x108 /* Goes in the optional file header magic number field */
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#define TIC80BADMAG(x) ((x).f_magic != TIC80_ARCH_MAGIC)
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#define FILHDR struct external_filehdr
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#define FILHSZ 22
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/********************** AOUT "OPTIONAL HEADER" **********************/
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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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}
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AOUTHDR;
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#define AOUTHDRSZ 28
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#define AOUTSZ 28
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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[2]; /* flags */
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char s_reserved[1]; /* reserved (TIc80 specific) */
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char s_mempage[1]; /* memory page number (TIc80) */
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};
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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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#define _CINIT ".cinit"
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#define _CONST ".const"
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#define _SWITCH ".switch"
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#define _STACK ".stack"
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#define _SYSMEM ".sysmem"
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#define SCNHDR struct external_scnhdr
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#define SCNHSZ 40
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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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};
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#define GET_LINENO_LNNO(abfd, ext) bfd_h_get_16(abfd, (bfd_byte *) (ext->l_lnno));
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#define PUT_LINENO_LNNO(abfd,val, ext) bfd_h_put_16(abfd,val, (bfd_byte *) (ext->l_lnno));
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#define LINENO struct external_lineno
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#define LINESZ 6
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/********************** SYMBOLS **********************/
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#define E_SYMNMLEN 8 /* # characters in a symbol name */
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#define E_FILNMLEN 14 /* # characters in a file name */
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#define E_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[E_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_type[2];
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char e_sclass[1];
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char e_numaux[1];
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};
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#define N_BTMASK (017)
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#define N_TMASK (060)
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#define N_BTSHFT (4)
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#define N_TSHIFT (2)
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/* FIXME - need to correlate with TIc80 Code Generation Tools User's Guide, CG:A-25 */
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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[E_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[E_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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#define SYMENT struct external_syment
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#define SYMESZ 18
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#define AUXENT union external_auxent
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#define AUXESZ 18
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/********************** RELOCATION DIRECTIVES **********************/
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/* The external reloc has an offset field, because some of the reloc
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types on the h8 don't have room in the instruction for the entire
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offset - eg the strange jump and high page addressing modes */
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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_reserved[2];
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char r_type[2];
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};
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#define RELOC struct external_reloc
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#define RELSZ 12
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/* TIc80 relocation types. */
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#define R_ABS 0x00 /* Absolute address - no relocation */
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#define R_RELLONGX 0x11 /* PP: 32 bits, direct */
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#define R_PPBASE 0x34 /* PP: Global base address type */
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#define R_PPLBASE 0x35 /* PP: Local base address type */
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#define R_PP15 0x38 /* PP: Global 15 bit offset */
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#define R_PP15W 0x39 /* PP: Global 15 bit offset divided by 4 */
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#define R_PP15H 0x3A /* PP: Global 15 bit offset divided by 2 */
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#define R_PP16B 0x3B /* PP: Global 16 bit offset for bytes */
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#define R_PPL15 0x3C /* PP: Local 15 bit offset */
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#define R_PPL15W 0x3D /* PP: Local 15 bit offset divided by 4 */
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#define R_PPL15H 0x3E /* PP: Local 15 bit offset divided by 2 */
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#define R_PPL16B 0x03 /* PP: Local 16 bit offset for bytes */
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#define R_PPN15 0x40 /* PP: Global 15 bit negative offset */
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#define R_PPN15W 0x41 /* PP: Global 15 bit negative offset divided by 4 */
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#define R_PPN15H 0x42 /* PP: Global 15 bit negative offset divided by 2 */
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#define R_PPN16B 0x43 /* PP: Global 16 bit negative byte offset */
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#define R_PPLN15 0x44 /* PP: Local 15 bit negative offset */
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#define R_PPLN15W 0x45 /* PP: Local 15 bit negative offset divided by 4 */
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#define R_PPLN15H 0x46 /* PP: Local 15 bit negative offset divided by 2 */
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#define R_PPLN16B 0x47 /* PP: Local 16 bit negative byte offset */
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#define R_MPPCR 0x4F /* MP: 32 bit PC-relative divided by 4 */
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