diff options
Diffstat (limited to 'include/coff/tic80.h')
| -rw-r--r-- | include/coff/tic80.h | 228 |
1 files changed, 228 insertions, 0 deletions
diff --git a/include/coff/tic80.h b/include/coff/tic80.h new file mode 100644 index 00000000000..5d938f7b1f0 --- /dev/null +++ b/include/coff/tic80.h @@ -0,0 +1,228 @@ +/*** coff information for TI TMS320C80 (MVP) */ + +/********************** 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 */ + char f_target_id[2]; /* target id (TIc80 specific) */ +}; + +#define TIC80_ARCH_MAGIC 0x0C1 /* Goes in the file header magic number field */ +#define TIC80_TARGET_ID 0x95 /* Goes in the target id field */ + +#define TIC80BADMAG(x) ((x).f_magic != TIC80_ARCH_MAGIC) + +#define FILHDR struct external_filehdr +#define FILHSZ 22 + + +/********************** 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 TIC80_AOUTHDR_MAGIC 0x108 /* Goes in the optional file header magic number field */ + +#define AOUTHDRSZ 28 +#define AOUTSZ 28 + + + + +/********************** 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[2]; /* flags */ + char s_reserved[1]; /* reserved (TIc80 specific) */ + char s_mempage[1]; /* memory page number (TIc80) */ +}; + +/* + * names of "special" sections + */ +#define _TEXT ".text" +#define _DATA ".data" +#define _BSS ".bss" +#define _CINIT ".cinit" +#define _CONST ".const" +#define _SWITCH ".switch" +#define _STACK ".stack" +#define _SYSMEM ".sysmem" + + +#define SCNHDR struct external_scnhdr +#define SCNHSZ 40 + + +/********************** 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 GET_LINENO_LNNO(abfd, ext) bfd_h_get_16(abfd, (bfd_byte *) (ext->l_lnno)); +#define PUT_LINENO_LNNO(abfd,val, ext) bfd_h_put_16(abfd,val, (bfd_byte *) (ext->l_lnno)); + +#define LINENO struct external_lineno +#define LINESZ 6 + + +/********************** 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]; +}; + + + +#define N_BTMASK (017) +#define N_TMASK (060) +#define N_BTSHFT (4) +#define N_TSHIFT (2) + +/* FIXME - need to correlate with TIc80 Code Generation Tools User's Guide, CG:A-25 */ +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 + + + +/********************** RELOCATION DIRECTIVES **********************/ + +/* The external reloc has an offset field, because some of the reloc + types on the h8 don't have room in the instruction for the entire + offset - eg the strange jump and high page addressing modes */ + +struct external_reloc { + char r_vaddr[4]; + char r_symndx[4]; + char r_reserved[2]; + char r_type[2]; +}; + + +#define RELOC struct external_reloc +#define RELSZ 12 + +/* TIc80 relocation types. */ + +#define R_ABS 0x00 /* Absolute address - no relocation */ +#define R_RELLONGX 0x11 /* PP: 32 bits, direct */ +#define R_PPBASE 0x34 /* PP: Global base address type */ +#define R_PPLBASE 0x35 /* PP: Local base address type */ +#define R_PP15 0x38 /* PP: Global 15 bit offset */ +#define R_PP15W 0x39 /* PP: Global 15 bit offset divided by 4 */ +#define R_PP15H 0x3A /* PP: Global 15 bit offset divided by 2 */ +#define R_PP16B 0x3B /* PP: Global 16 bit offset for bytes */ +#define R_PPL15 0x3C /* PP: Local 15 bit offset */ +#define R_PPL15W 0x3D /* PP: Local 15 bit offset divided by 4 */ +#define R_PPL15H 0x3E /* PP: Local 15 bit offset divided by 2 */ +#define R_PPL16B 0x3F /* PP: Local 16 bit offset for bytes */ +#define R_PPN15 0x40 /* PP: Global 15 bit negative offset */ +#define R_PPN15W 0x41 /* PP: Global 15 bit negative offset divided by 4 */ +#define R_PPN15H 0x42 /* PP: Global 15 bit negative offset divided by 2 */ +#define R_PPN16B 0x43 /* PP: Global 16 bit negative byte offset */ +#define R_PPLN15 0x44 /* PP: Local 15 bit negative offset */ +#define R_PPLN15W 0x45 /* PP: Local 15 bit negative offset divided by 4 */ +#define R_PPLN15H 0x46 /* PP: Local 15 bit negative offset divided by 2 */ +#define R_PPLN16B 0x47 /* PP: Local 16 bit negative byte offset */ +#define R_MPPCR15W 0x4E /* MP: 15 bit PC-relative divided by 4 */ +#define R_MPPCR 0x4F /* MP: 32 bit PC-relative divided by 4 */ |