1 /* Table of DBX symbol codes for the GNU system. 2 Copyright (C) 1988, 1997 Free Software Foundation, Inc. 3 This file is part of the GNU C Library. 4 5 The GNU C Library is free software; you can redistribute it and/or 6 modify it under the terms of the GNU Lesser General Public 7 License as published by the Free Software Foundation; either 8 version 2.1 of the License, or (at your option) any later version. 9 10 The GNU C Library 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 GNU 13 Lesser General Public License for more details. 14 15 You should have received a copy of the GNU Lesser General Public 16 License along with the GNU C Library; if not, write to the Free 17 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 18 02111-1307 USA. */ 19 20 /* This contains contribution from Cygnus Support. */ 21 22 /* Global variable. Only the name is significant. 24 To find the address, look in the corresponding external symbol. */ 25 __define_stab (N_GSYM, 0x20, "GSYM") 26 27 /* Function name for BSD Fortran. Only the name is significant. 28 To find the address, look in the corresponding external symbol. */ 29 __define_stab (N_FNAME, 0x22, "FNAME") 30 31 /* Function name or text-segment variable for C. Value is its address. 32 Desc is supposedly starting line number, but GCC doesn't set it 33 and DBX seems not to miss it. */ 34 __define_stab (N_FUN, 0x24, "FUN") 35 36 /* Data-segment variable with internal linkage. Value is its address. 37 "Static Sym". */ 38 __define_stab (N_STSYM, 0x26, "STSYM") 39 40 /* BSS-segment variable with internal linkage. Value is its address. */ 41 __define_stab (N_LCSYM, 0x28, "LCSYM") 42 43 /* Name of main routine. Only the name is significant. 44 This is not used in C. */ 45 __define_stab (N_MAIN, 0x2a, "MAIN") 46 47 /* Global symbol in Pascal. 48 Supposedly the value is its line number; I'm skeptical. */ 49 __define_stab (N_PC, 0x30, "PC") 50 51 /* Number of symbols: 0, files,,funcs,lines according to Ultrix V4.0. */ 52 __define_stab (N_NSYMS, 0x32, "NSYMS") 53 54 /* "No DST map for sym: name, ,0,type,ignored" according to Ultrix V4.0. */ 55 __define_stab (N_NOMAP, 0x34, "NOMAP") 56 57 /* New stab from Solaris. I don't know what it means, but it 58 don't seem to contain useful information. */ 59 __define_stab (N_OBJ, 0x38, "OBJ") 60 61 /* New stab from Solaris. I don't know what it means, but it 62 don't seem to contain useful information. Possibly related to the 63 optimization flags used in this module. */ 64 __define_stab (N_OPT, 0x3c, "OPT") 65 66 /* Register variable. Value is number of register. */ 67 __define_stab (N_RSYM, 0x40, "RSYM") 68 69 /* Modula-2 compilation unit. Can someone say what info it contains? */ 70 __define_stab (N_M2C, 0x42, "M2C") 71 72 /* Line number in text segment. Desc is the line number; 73 value is corresponding address. */ 74 __define_stab (N_SLINE, 0x44, "SLINE") 75 76 /* Similar, for data segment. */ 77 __define_stab (N_DSLINE, 0x46, "DSLINE") 78 79 /* Similar, for bss segment. */ 80 __define_stab (N_BSLINE, 0x48, "BSLINE") 81 82 /* Sun's source-code browser stabs. ?? Don't know what the fields are. 83 Supposedly the field is "path to associated .cb file". THIS VALUE 84 OVERLAPS WITH N_BSLINE! */ 85 __define_stab (N_BROWS, 0x48, "BROWS") 86 87 /* GNU Modula-2 definition module dependency. Value is the modification time 88 of the definition file. Other is non-zero if it is imported with the 89 GNU M2 keyword %INITIALIZE. Perhaps N_M2C can be used if there 90 are enough empty fields? */ 91 __define_stab(N_DEFD, 0x4a, "DEFD") 92 93 /* THE FOLLOWING TWO STAB VALUES CONFLICT. Happily, one is for Modula-2 94 and one is for C++. Still,... */ 95 /* GNU C++ exception variable. Name is variable name. */ 96 __define_stab (N_EHDECL, 0x50, "EHDECL") 97 /* Modula2 info "for imc": name,,0,0,0 according to Ultrix V4.0. */ 98 __define_stab (N_MOD2, 0x50, "MOD2") 99 100 /* GNU C++ `catch' clause. Value is its address. Desc is nonzero if 101 this entry is immediately followed by a CAUGHT stab saying what exception 102 was caught. Multiple CAUGHT stabs means that multiple exceptions 103 can be caught here. If Desc is 0, it means all exceptions are caught 104 here. */ 105 __define_stab (N_CATCH, 0x54, "CATCH") 106 107 /* Structure or union element. Value is offset in the structure. */ 108 __define_stab (N_SSYM, 0x60, "SSYM") 109 110 /* Name of main source file. 111 Value is starting text address of the compilation. */ 112 __define_stab (N_SO, 0x64, "SO") 113 114 /* Automatic variable in the stack. Value is offset from frame pointer. 115 Also used for type descriptions. */ 116 __define_stab (N_LSYM, 0x80, "LSYM") 117 118 /* Beginning of an include file. Only Sun uses this. 119 In an object file, only the name is significant. 120 The Sun linker puts data into some of the other fields. */ 121 __define_stab (N_BINCL, 0x82, "BINCL") 122 123 /* Name of sub-source file (#include file). 124 Value is starting text address of the compilation. */ 125 __define_stab (N_SOL, 0x84, "SOL") 126 127 /* Parameter variable. Value is offset from argument pointer. 128 (On most machines the argument pointer is the same as the frame pointer. */ 129 __define_stab (N_PSYM, 0xa0, "PSYM") 130 131 /* End of an include file. No name. 132 This and N_BINCL act as brackets around the file's output. 133 In an object file, there is no significant data in this entry. 134 The Sun linker puts data into some of the fields. */ 135 __define_stab (N_EINCL, 0xa2, "EINCL") 136 137 /* Alternate entry point. Value is its address. */ 138 __define_stab (N_ENTRY, 0xa4, "ENTRY") 139 140 /* Beginning of lexical block. 141 The desc is the nesting level in lexical blocks. 142 The value is the address of the start of the text for the block. 143 The variables declared inside the block *precede* the N_LBRAC symbol. */ 144 __define_stab (N_LBRAC, 0xc0, "LBRAC") 145 146 /* Place holder for deleted include file. Replaces a N_BINCL and everything 147 up to the corresponding N_EINCL. The Sun linker generates these when 148 it finds multiple identical copies of the symbols from an include file. 149 This appears only in output from the Sun linker. */ 150 __define_stab (N_EXCL, 0xc2, "EXCL") 151 152 /* Modula-2 scope information. Can someone say what info it contains? */ 153 __define_stab (N_SCOPE, 0xc4, "SCOPE") 154 155 /* End of a lexical block. Desc matches the N_LBRAC's desc. 156 The value is the address of the end of the text for the block. */ 157 __define_stab (N_RBRAC, 0xe0, "RBRAC") 158 159 /* Begin named common block. Only the name is significant. */ 160 __define_stab (N_BCOMM, 0xe2, "BCOMM") 161 162 /* End named common block. Only the name is significant 163 (and it should match the N_BCOMM). */ 164 __define_stab (N_ECOMM, 0xe4, "ECOMM") 165 166 /* End common (local name): value is address. 167 I'm not sure how this is used. */ 168 __define_stab (N_ECOML, 0xe8, "ECOML") 169 170 /* These STAB's are used on Gould systems for Non-Base register symbols 171 or something like that. FIXME. I have assigned the values at random 172 since I don't have a Gould here. Fixups from Gould folk welcome... */ 173 __define_stab (N_NBTEXT, 0xF0, "NBTEXT") 174 __define_stab (N_NBDATA, 0xF2, "NBDATA") 175 __define_stab (N_NBBSS, 0xF4, "NBBSS") 176 __define_stab (N_NBSTS, 0xF6, "NBSTS") 177 __define_stab (N_NBLCS, 0xF8, "NBLCS") 178 179 /* Second symbol entry containing a length-value for the preceding entry. 180 The value is the length. */ 181 __define_stab (N_LENG, 0xfe, "LENG") 182 183 /* The above information, in matrix format. 185 186 STAB MATRIX 187 _________________________________________________ 188 | 00 - 1F are not dbx stab symbols | 189 | In most cases, the low bit is the EXTernal bit| 190 191 | 00 UNDEF | 02 ABS | 04 TEXT | 06 DATA | 192 | 01 |EXT | 03 |EXT | 05 |EXT | 07 |EXT | 193 194 | 08 BSS | 0A INDR | 0C FN_SEQ | 0E | 195 | 09 |EXT | 0B | 0D | 0F | 196 197 | 10 | 12 COMM | 14 SETA | 16 SETT | 198 | 11 | 13 | 15 | 17 | 199 200 | 18 SETD | 1A SETB | 1C SETV | 1E WARNING| 201 | 19 | 1B | 1D | 1F FN | 202 203 |_______________________________________________| 204 | Debug entries with bit 01 set are unused. | 205 | 20 GSYM | 22 FNAME | 24 FUN | 26 STSYM | 206 | 28 LCSYM | 2A MAIN | 2C | 2E | 207 | 30 PC | 32 NSYMS | 34 NOMAP | 36 | 208 | 38 OBJ | 3A | 3C OPT | 3E | 209 | 40 RSYM | 42 M2C | 44 SLINE | 46 DSLINE | 210 | 48 BSLINE*| 4A DEFD | 4C | 4E | 211 | 50 EHDECL*| 52 | 54 CATCH | 56 | 212 | 58 | 5A | 5C | 5E | 213 | 60 SSYM | 62 | 64 SO | 66 | 214 | 68 | 6A | 6C | 6E | 215 | 70 | 72 | 74 | 76 | 216 | 78 | 7A | 7C | 7E | 217 | 80 LSYM | 82 BINCL | 84 SOL | 86 | 218 | 88 | 8A | 8C | 8E | 219 | 90 | 92 | 94 | 96 | 220 | 98 | 9A | 9C | 9E | 221 | A0 PSYM | A2 EINCL | A4 ENTRY | A6 | 222 | A8 | AA | AC | AE | 223 | B0 | B2 | B4 | B6 | 224 | B8 | BA | BC | BE | 225 | C0 LBRAC | C2 EXCL | C4 SCOPE | C6 | 226 | C8 | CA | CC | CE | 227 | D0 | D2 | D4 | D6 | 228 | D8 | DA | DC | DE | 229 | E0 RBRAC | E2 BCOMM | E4 ECOMM | E6 | 230 | E8 ECOML | EA | EC | EE | 231 | F0 | F2 | F4 | F6 | 232 | F8 | FA | FC | FE LENG | 233 +-----------------------------------------------+ 234 * 50 EHDECL is also MOD2. 235 * 48 BSLINE is also BROWS. 236 */ 237
