| 1 | /*** coff information for 88k bcs */ |
| 2 | |
| 3 | /********************** FILE HEADER **********************/ |
| 4 | struct external_filehdr { |
| 5 | char f_magic[2]; /* magic number */ |
| 6 | char f_nscns[2]; /* number of sections */ |
| 7 | char f_timdat[4]; /* time & date stamp */ |
| 8 | char f_symptr[4]; /* file pointer to symtab */ |
| 9 | char f_nsyms[4]; /* number of symtab entries */ |
| 10 | char f_opthdr[2]; /* sizeof(optional hdr) */ |
| 11 | char f_flags[2]; /* flags */ |
| 12 | }; |
| 13 | |
| 14 | #define MC88MAGIC 0540 /* 88k BCS executable */ |
| 15 | #define MC88DMAGIC 0541 /* DG/UX executable */ |
| 16 | #define MC88OMAGIC 0555 /* Object file */ |
| 17 | |
| 18 | #define OMAGIC MC88OMAGIC |
| 19 | |
| 20 | #define MC88BADMAG(x) (((x).f_magic!=MC88MAGIC) &&((x).f_magic!=MC88DMAGIC) && ((x).f_magic != MC88OMAGIC)) |
| 21 | |
| 22 | #define FILHDR struct external_filehdr |
| 23 | #define FILHSZ sizeof(FILHDR) |
| 24 | |
| 25 | |
| 26 | /********************** AOUT "OPTIONAL HEADER" **********************/ |
| 27 | |
| 28 | |
| 29 | #define PAGEMAGIC3 0414 /* Split i&d, zero mapped */ |
| 30 | #define PAGEMAGICBCS 0413 |
| 31 | |
| 32 | |
| 33 | typedef struct |
| 34 | { |
| 35 | char magic[2]; /* type of file */ |
| 36 | char vstamp[2]; /* version stamp */ |
| 37 | char tsize[4]; /* text size in bytes, padded to FW bdry*/ |
| 38 | char dsize[4]; /* initialized data " " */ |
| 39 | char bsize[4]; /* uninitialized data " " */ |
| 40 | char entry[4]; /* entry pt. */ |
| 41 | char text_start[4]; /* base of text used for this file */ |
| 42 | char data_start[4]; /* base of data used for this file */ |
| 43 | } |
| 44 | AOUTHDR; |
| 45 | |
| 46 | |
| 47 | /* compute size of a header */ |
| 48 | |
| 49 | #define AOUTSZ (sizeof(AOUTHDR)) |
| 50 | |
| 51 | |
| 52 | /********************** SECTION HEADER **********************/ |
| 53 | |
| 54 | |
| 55 | struct external_scnhdr |
| 56 | { |
| 57 | char s_name[8]; /* section name */ |
| 58 | char s_paddr[4]; /* physical address, aliased s_nlib */ |
| 59 | char s_vaddr[4]; /* virtual address */ |
| 60 | char s_size[4]; /* section size */ |
| 61 | char s_scnptr[4]; /* file ptr to raw data for section */ |
| 62 | char s_relptr[4]; /* file ptr to relocation */ |
| 63 | char s_lnnoptr[4]; /* file ptr to line numbers */ |
| 64 | char s_nreloc[4]; /* number of relocation entries */ |
| 65 | char s_nlnno[4]; /* number of line number entries*/ |
| 66 | char s_flags[4]; /* flags */ |
| 67 | }; |
| 68 | |
| 69 | |
| 70 | #define SCNHDR struct external_scnhdr |
| 71 | #define SCNHSZ sizeof(SCNHDR) |
| 72 | |
| 73 | /* |
| 74 | * names of "special" sections |
| 75 | */ |
| 76 | #define _TEXT ".text" |
| 77 | #define _DATA ".data" |
| 78 | #define _BSS ".bss" |
| 79 | |
| 80 | /********************** LINE NUMBERS **********************/ |
| 81 | |
| 82 | /* 1 line number entry for every "breakpointable" source line in a section. |
| 83 | * Line numbers are grouped on a per function basis; first entry in a function |
| 84 | * grouping will have l_lnno = 0 and in place of physical address will be the |
| 85 | * symbol table index of the function name. |
| 86 | */ |
| 87 | struct external_lineno{ |
| 88 | union { |
| 89 | char l_symndx[4]; /* function name symbol index, iff l_lnno == 0*/ |
| 90 | char l_paddr[4]; /* (physical) address of line number */ |
| 91 | } l_addr; |
| 92 | |
| 93 | char l_lnno[4]; |
| 94 | |
| 95 | }; |
| 96 | |
| 97 | #define LINENO struct external_lineno |
| 98 | #define LINESZ 8 |
| 99 | |
| 100 | |
| 101 | /********************** SYMBOLS **********************/ |
| 102 | |
| 103 | #define E_SYMNMLEN 8 /* # characters in a symbol name */ |
| 104 | #define E_FILNMLEN 14 /* # characters in a file name */ |
| 105 | #define E_DIMNUM 4 /* # array dimensions in auxiliary entry */ |
| 106 | |
| 107 | struct external_syment |
| 108 | { |
| 109 | union { |
| 110 | char e_name[E_SYMNMLEN]; |
| 111 | struct { |
| 112 | char e_zeroes[4]; |
| 113 | char e_offset[4]; |
| 114 | } e; |
| 115 | } e; |
| 116 | char e_value[4]; |
| 117 | char e_scnum[2]; |
| 118 | char e_type[2]; |
| 119 | char e_sclass[1]; |
| 120 | char e_numaux[1]; |
| 121 | char pad2[2]; |
| 122 | }; |
| 123 | |
| 124 | |
| 125 | |
| 126 | |
| 127 | #define N_BTMASK 017 |
| 128 | #define N_TMASK 060 |
| 129 | #define N_BTSHFT 4 |
| 130 | #define N_TSHIFT 2 |
| 131 | |
| 132 | |
| 133 | /* Note that this isn't the same shape as other coffs */ |
| 134 | union external_auxent { |
| 135 | struct { |
| 136 | char x_tagndx[4]; /* str, un, or enum tag indx */ |
| 137 | /* 4 */ |
| 138 | union { |
| 139 | char x_fsize[4]; /* size of function */ |
| 140 | struct { |
| 141 | char x_lnno[4]; /* declaration line number */ |
| 142 | char x_size[4]; /* str/union/array size */ |
| 143 | } x_lnsz; |
| 144 | } x_misc; |
| 145 | |
| 146 | /* 12 */ |
| 147 | union { |
| 148 | struct { /* if ISFCN, tag, or .bb */ |
| 149 | char x_lnnoptr[4]; /* ptr to fcn line # */ |
| 150 | char x_endndx[4]; /* entry ndx past block end */ |
| 151 | } x_fcn; |
| 152 | struct { /* if ISARY, up to 4 dimen. */ |
| 153 | char x_dimen[E_DIMNUM][2]; |
| 154 | } x_ary; |
| 155 | } x_fcnary; |
| 156 | /* 20 */ |
| 157 | |
| 158 | } x_sym; |
| 159 | |
| 160 | union { |
| 161 | char x_fname[E_FILNMLEN]; |
| 162 | struct { |
| 163 | char x_zeroes[4]; |
| 164 | char x_offset[4]; |
| 165 | } x_n; |
| 166 | } x_file; |
| 167 | |
| 168 | struct { |
| 169 | char x_scnlen[4]; /* section length */ |
| 170 | char x_nreloc[4]; /* # relocation entries */ |
| 171 | char x_nlinno[4]; /* # line numbers */ |
| 172 | } x_scn; |
| 173 | |
| 174 | struct { |
| 175 | char x_tvfill[4]; /* tv fill value */ |
| 176 | char x_tvlen[2]; /* length of .tv */ |
| 177 | char x_tvran[2][2]; /* tv range */ |
| 178 | } x_tv; /* info about .tv section (in auxent of symbol .tv)) */ |
| 179 | |
| 180 | }; |
| 181 | |
| 182 | #define GET_FCN_LNNOPTR(abfd, ext) bfd_h_get_32(abfd, (bfd_byte *)ext->x_sym.x_fcnary.x_fcn.x_lnnoptr) |
| 183 | #define GET_FCN_ENDNDX(abfd, ext) bfd_h_get_32(abfd, (bfd_byte *) ext->x_sym.x_fcnary.x_fcn.x_endndx) |
| 184 | #define PUT_FCN_LNNOPTR(abfd, in, ext) bfd_h_put_32(abfd, in, (bfd_byte *) ext->x_sym.x_fcnary.x_fcn.x_lnnoptr) |
| 185 | #define PUT_FCN_ENDNDX(abfd, in, ext) bfd_h_put_32(abfd, in, (bfd_byte *) ext->x_sym.x_fcnary.x_fcn.x_endndx) |
| 186 | #define GET_LNSZ_SIZE(abfd, ext) bfd_h_get_32(abfd, (bfd_byte *) ext->x_sym.x_misc.x_lnsz.x_size) |
| 187 | #define GET_LNSZ_LNNO(abfd, ext) bfd_h_get_32(abfd, (bfd_byte *) ext->x_sym.x_misc.x_lnsz.x_lnno) |
| 188 | #define PUT_LNSZ_LNNO(abfd, in, ext) bfd_h_put_32(abfd, in, (bfd_byte *) ext->x_sym.x_misc.x_lnsz.x_lnno) |
| 189 | #define PUT_LNSZ_SIZE(abfd, in, ext) bfd_h_put_32(abfd, in, (bfd_byte *) ext->x_sym.x_misc.x_lnsz.x_size) |
| 190 | #define GET_SCN_SCNLEN(abfd, ext) bfd_h_get_32(abfd, (bfd_byte *) ext->x_scn.x_scnlen) |
| 191 | #define GET_SCN_NRELOC(abfd, ext) bfd_h_get_32(abfd, (bfd_byte *) ext->x_scn.x_nreloc) |
| 192 | #define GET_SCN_NLINNO(abfd, ext) bfd_h_get_32(abfd, (bfd_byte *) ext->x_scn.x_nlinno) |
| 193 | #define PUT_SCN_SCNLEN(abfd,in, ext) bfd_h_put_32(abfd, in, (bfd_byte *) ext->x_scn.x_scnlen) |
| 194 | #define PUT_SCN_NRELOC(abfd,in, ext) bfd_h_put_32(abfd, in, (bfd_byte *)ext->x_scn.x_nreloc) |
| 195 | #define PUT_SCN_NLINNO(abfd,in, ext) bfd_h_put_32(abfd,in, (bfd_byte *) ext->x_scn.x_nlinno) |
| 196 | #define GET_LINENO_LNNO(abfd, ext) bfd_h_get_32(abfd, (bfd_byte *) (ext->l_lnno)) |
| 197 | #define PUT_LINENO_LNNO(abfd,val, ext) bfd_h_put_32(abfd,val, (bfd_byte *) (ext->l_lnno)); |
| 198 | |
| 199 | |
| 200 | |
| 201 | #define SYMENT struct external_syment |
| 202 | #define SYMESZ 20 |
| 203 | #define AUXENT union external_auxent |
| 204 | #define AUXESZ 20 |
| 205 | |
| 206 | |
| 207 | /********************** RELOCATION DIRECTIVES **********************/ |
| 208 | |
| 209 | struct external_reloc { |
| 210 | char r_vaddr[4]; |
| 211 | char r_symndx[4]; |
| 212 | char r_type[2]; |
| 213 | char r_offset[2]; |
| 214 | }; |
| 215 | |
| 216 | #define RELOC struct external_reloc |
| 217 | #define RELSZ 12 |
| 218 | |
| 219 | #define DEFAULT_SECTION_ALIGNMENT 8 /* double word */ |
| 220 | |
| 221 | #define NO_TVNDX |