1 /* coff information for TI TMS320C80 (MVP) 2 3 Copyright 2001 Free Software Foundation, Inc. 4 5 This program is free software; you can redistribute it and/or modify 6 it under the terms of the GNU General Public License as published by 7 the Free Software Foundation; either version 2 of the License, or 8 (at your option) any later version. 9 10 This program is distributed in the hope that it will be useful, 11 but WITHOUT ANY WARRANTY; without even the implied warranty of 12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 13 GNU General Public License for more details. 14 15 You should have received a copy of the GNU General Public License 16 along with this program; if not, write to the Free Software 17 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ 18 19 /********************** FILE HEADER **********************/ 20 21 struct external_filehdr { 22 char f_magic[2]; /* magic number */ 23 char f_nscns[2]; /* number of sections */ 24 char f_timdat[4]; /* time & date stamp */ 25 char f_symptr[4]; /* file pointer to symtab */ 26 char f_nsyms[4]; /* number of symtab entries */ 27 char f_opthdr[2]; /* sizeof(optional hdr) */ 28 char f_flags[2]; /* flags */ 29 char f_target_id[2]; /* target id (TIc80 specific) */ 30 }; 31 32 #define TIC80_ARCH_MAGIC 0x0C1 /* Goes in the file header magic number field */ 33 #define TIC80_TARGET_ID 0x95 /* Goes in the target id field */ 34 35 #define TIC80BADMAG(x) ((x).f_magic != TIC80_ARCH_MAGIC) 36 37 #define FILHDR struct external_filehdr 38 #define FILHSZ 22 39 40 41 /********************** AOUT "OPTIONAL HEADER" **********************/ 42 43 44 typedef struct 45 { 46 char magic[2]; /* type of file */ 47 char vstamp[2]; /* version stamp */ 48 char tsize[4]; /* text size in bytes, padded to FW bdry*/ 49 char dsize[4]; /* initialized data " " */ 50 char bsize[4]; /* uninitialized data " " */ 51 char entry[4]; /* entry pt. */ 52 char text_start[4]; /* base of text used for this file */ 53 char data_start[4]; /* base of data used for this file */ 54 } 55 AOUTHDR; 56 57 #define TIC80_AOUTHDR_MAGIC 0x108 /* Goes in the optional file header magic number field */ 58 59 #define AOUTHDRSZ 28 60 #define AOUTSZ 28 61 62 63 64 65 /********************** SECTION HEADER **********************/ 66 67 68 struct external_scnhdr { 69 char s_name[8]; /* section name */ 70 char s_paddr[4]; /* physical address, aliased s_nlib */ 71 char s_vaddr[4]; /* virtual address */ 72 char s_size[4]; /* section size */ 73 char s_scnptr[4]; /* file ptr to raw data for section */ 74 char s_relptr[4]; /* file ptr to relocation */ 75 char s_lnnoptr[4]; /* file ptr to line numbers */ 76 char s_nreloc[2]; /* number of relocation entries */ 77 char s_nlnno[2]; /* number of line number entries*/ 78 char s_flags[2]; /* flags */ 79 char s_reserved[1]; /* reserved (TIc80 specific) */ 80 char s_mempage[1]; /* memory page number (TIc80) */ 81 }; 82 83 /* 84 * names of "special" sections 85 */ 86 #define _TEXT ".text" 87 #define _DATA ".data" 88 #define _BSS ".bss" 89 #define _CINIT ".cinit" 90 #define _CONST ".const" 91 #define _SWITCH ".switch" 92 #define _STACK ".stack" 93 #define _SYSMEM ".sysmem" 94 95 96 #define SCNHDR struct external_scnhdr 97 #define SCNHSZ 40 98 99 100 /********************** LINE NUMBERS **********************/ 101 102 /* 1 line number entry for every "breakpointable" source line in a section. 103 * Line numbers are grouped on a per function basis; first entry in a function 104 * grouping will have l_lnno = 0 and in place of physical address will be the 105 * symbol table index of the function name. 106 */ 107 struct external_lineno { 108 union { 109 char l_symndx[4]; /* function name symbol index, iff l_lnno == 0*/ 110 char l_paddr[4]; /* (physical) address of line number */ 111 } l_addr; 112 char l_lnno[2]; /* line number */ 113 }; 114 115 #define GET_LINENO_LNNO(abfd, ext) bfd_h_get_16(abfd, (bfd_byte *) (ext->l_lnno)); 116 #define PUT_LINENO_LNNO(abfd,val, ext) bfd_h_put_16(abfd,val, (bfd_byte *) (ext->l_lnno)); 117 118 #define LINENO struct external_lineno 119 #define LINESZ 6 120 121 122 /********************** SYMBOLS **********************/ 123 124 #define E_SYMNMLEN 8 /* # characters in a symbol name */ 125 #define E_FILNMLEN 14 /* # characters in a file name */ 126 #define E_DIMNUM 4 /* # array dimensions in auxiliary entry */ 127 128 struct external_syment 129 { 130 union { 131 char e_name[E_SYMNMLEN]; 132 struct { 133 char e_zeroes[4]; 134 char e_offset[4]; 135 } e; 136 } e; 137 char e_value[4]; 138 char e_scnum[2]; 139 char e_type[2]; 140 char e_sclass[1]; 141 char e_numaux[1]; 142 }; 143 144 145 146 #define N_BTMASK (017) 147 #define N_TMASK (060) 148 #define N_BTSHFT (4) 149 #define N_TSHIFT (2) 150 151 /* FIXME - need to correlate with TIc80 Code Generation Tools User's Guide, CG:A-25 */ 152 union external_auxent { 153 struct { 154 char x_tagndx[4]; /* str, un, or enum tag indx */ 155 union { 156 struct { 157 char x_lnno[2]; /* declaration line number */ 158 char x_size[2]; /* str/union/array size */ 159 } x_lnsz; 160 char x_fsize[4]; /* size of function */ 161 } x_misc; 162 union { 163 struct { /* if ISFCN, tag, or .bb */ 164 char x_lnnoptr[4]; /* ptr to fcn line # */ 165 char x_endndx[4]; /* entry ndx past block end */ 166 } x_fcn; 167 struct { /* if ISARY, up to 4 dimen. */ 168 char x_dimen[E_DIMNUM][2]; 169 } x_ary; 170 } x_fcnary; 171 char x_tvndx[2]; /* tv index */ 172 } x_sym; 173 174 union { 175 char x_fname[E_FILNMLEN]; 176 struct { 177 char x_zeroes[4]; 178 char x_offset[4]; 179 } x_n; 180 } x_file; 181 182 struct { 183 char x_scnlen[4]; /* section length */ 184 char x_nreloc[2]; /* # relocation entries */ 185 char x_nlinno[2]; /* # line numbers */ 186 } x_scn; 187 188 struct { 189 char x_tvfill[4]; /* tv fill value */ 190 char x_tvlen[2]; /* length of .tv */ 191 char x_tvran[2][2]; /* tv range */ 192 } x_tv; /* info about .tv section (in auxent of symbol .tv)) */ 193 194 195 }; 196 197 #define SYMENT struct external_syment 198 #define SYMESZ 18 199 #define AUXENT union external_auxent 200 #define AUXESZ 18 201 202 203 204 /********************** RELOCATION DIRECTIVES **********************/ 205 206 /* The external reloc has an offset field, because some of the reloc 207 types on the h8 don't have room in the instruction for the entire 208 offset - eg the strange jump and high page addressing modes */ 209 210 struct external_reloc { 211 char r_vaddr[4]; 212 char r_symndx[4]; 213 char r_reserved[2]; 214 char r_type[2]; 215 }; 216 217 218 #define RELOC struct external_reloc 219 #define RELSZ 12 220 221 /* TIc80 relocation types. */ 222 223 #define R_ABS 0x00 /* Absolute address - no relocation */ 224 #define R_RELLONGX 0x11 /* PP: 32 bits, direct */ 225 #define R_PPBASE 0x34 /* PP: Global base address type */ 226 #define R_PPLBASE 0x35 /* PP: Local base address type */ 227 #define R_PP15 0x38 /* PP: Global 15 bit offset */ 228 #define R_PP15W 0x39 /* PP: Global 15 bit offset divided by 4 */ 229 #define R_PP15H 0x3A /* PP: Global 15 bit offset divided by 2 */ 230 #define R_PP16B 0x3B /* PP: Global 16 bit offset for bytes */ 231 #define R_PPL15 0x3C /* PP: Local 15 bit offset */ 232 #define R_PPL15W 0x3D /* PP: Local 15 bit offset divided by 4 */ 233 #define R_PPL15H 0x3E /* PP: Local 15 bit offset divided by 2 */ 234 #define R_PPL16B 0x3F /* PP: Local 16 bit offset for bytes */ 235 #define R_PPN15 0x40 /* PP: Global 15 bit negative offset */ 236 #define R_PPN15W 0x41 /* PP: Global 15 bit negative offset divided by 4 */ 237 #define R_PPN15H 0x42 /* PP: Global 15 bit negative offset divided by 2 */ 238 #define R_PPN16B 0x43 /* PP: Global 16 bit negative byte offset */ 239 #define R_PPLN15 0x44 /* PP: Local 15 bit negative offset */ 240 #define R_PPLN15W 0x45 /* PP: Local 15 bit negative offset divided by 4 */ 241 #define R_PPLN15H 0x46 /* PP: Local 15 bit negative offset divided by 2 */ 242 #define R_PPLN16B 0x47 /* PP: Local 16 bit negative byte offset */ 243 #define R_MPPCR15W 0x4E /* MP: 15 bit PC-relative divided by 4 */ 244 #define R_MPPCR 0x4F /* MP: 32 bit PC-relative divided by 4 */ 245