1/* Table of DBX symbol codes for the GNU system. 2 Copyright (C) 1988, 1997, 1998, 2004 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 Library General Public License as 7 published by the Free Software Foundation; either version 2 of the 8 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 Library General Public License for more details. 14 15 You should have received a copy of the GNU Library General Public 16 License along with the GNU C Library; see the file COPYING.LIB. If not, 17 write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, 18 Boston, MA 02110-1301, USA. */ 19 20/* This contains contribution from Cygnus Support. */ 21 22/* Global variable. Only the name is significant. 23 To find the address, look in the corresponding external symbol. */ 24__define_stab (N_GSYM, 0x20, "GSYM") 25 26/* Function name for BSD Fortran. Only the name is significant. 27 To find the address, look in the corresponding external symbol. */ 28__define_stab (N_FNAME, 0x22, "FNAME") 29 30/* Function name or text-segment variable for C. Value is its address. 31 Desc is supposedly starting line number, but GCC doesn't set it 32 and DBX seems not to miss it. */ 33__define_stab (N_FUN, 0x24, "FUN") 34 35/* Data-segment variable with internal linkage. Value is its address. 36 "Static Sym". */ 37__define_stab (N_STSYM, 0x26, "STSYM") 38 39/* BSS-segment variable with internal linkage. Value is its address. */ 40__define_stab (N_LCSYM, 0x28, "LCSYM") 41 42/* Begin function marker. */ 43__define_stab (N_BNSYM, 0x2e, "BNSYM") 44 45/* End function marker. */ 46__define_stab (N_ENSYM, 0x4e, "ENSYM") 47 48/* Name of main routine. Only the name is significant. 49 This is not used in C. */ 50__define_stab (N_MAIN, 0x2a, "MAIN") 51 52/* Global symbol in Pascal. 53 Supposedly the value is its line number; I'm skeptical. */ 54__define_stab (N_PC, 0x30, "PC") 55 56/* Number of symbols: 0, files,,funcs,lines according to Ultrix V4.0. */ 57__define_stab (N_NSYMS, 0x32, "NSYMS") 58 59/* "No DST map for sym: name, ,0,type,ignored" according to Ultrix V4.0. */ 60__define_stab (N_NOMAP, 0x34, "NOMAP") 61 62/* New stab from Solaris. I don't know what it means, but it 63 don't seem to contain useful information. */ 64__define_stab (N_OBJ, 0x38, "OBJ") 65 66/* New stab from Solaris. I don't know what it means, but it 67 don't seem to contain useful information. Possibly related to the 68 optimization flags used in this module. */ 69__define_stab (N_OPT, 0x3c, "OPT") 70 71/* Register variable. Value is number of register. */ 72__define_stab (N_RSYM, 0x40, "RSYM") 73 74/* Modula-2 compilation unit. Can someone say what info it contains? */ 75__define_stab (N_M2C, 0x42, "M2C") 76 77/* Line number in text segment. Desc is the line number; 78 value is corresponding address. */ 79__define_stab (N_SLINE, 0x44, "SLINE") 80 81/* Similar, for data segment. */ 82__define_stab (N_DSLINE, 0x46, "DSLINE") 83 84/* Similar, for bss segment. */ 85__define_stab (N_BSLINE, 0x48, "BSLINE") 86 87/* Sun's source-code browser stabs. ?? Don't know what the fields are. 88 Supposedly the field is "path to associated .cb file". THIS VALUE 89 OVERLAPS WITH N_BSLINE! */ 90__define_stab (N_BROWS, 0x48, "BROWS") 91 92/* GNU Modula-2 definition module dependency. Value is the modification time 93 of the definition file. Other is nonzero if it is imported with the 94 GNU M2 keyword %INITIALIZE. Perhaps N_M2C can be used if there 95 are enough empty fields? */ 96__define_stab(N_DEFD, 0x4a, "DEFD") 97 98/* THE FOLLOWING TWO STAB VALUES CONFLICT. Happily, one is for Modula-2 99 and one is for C++. Still,... */ 100/* GNU C++ exception variable. Name is variable name. */ 101__define_stab (N_EHDECL, 0x50, "EHDECL") 102/* Modula2 info "for imc": name,,0,0,0 according to Ultrix V4.0. */ 103__define_stab (N_MOD2, 0x50, "MOD2") 104 105/* GNU C++ `catch' clause. Value is its address. Desc is nonzero if 106 this entry is immediately followed by a CAUGHT stab saying what exception 107 was caught. Multiple CAUGHT stabs means that multiple exceptions 108 can be caught here. If Desc is 0, it means all exceptions are caught 109 here. */ 110__define_stab (N_CATCH, 0x54, "CATCH") 111 112/* Structure or union element. Value is offset in the structure. */ 113__define_stab (N_SSYM, 0x60, "SSYM") 114 115/* Name of main source file. 116 Value is starting text address of the compilation. */ 117__define_stab (N_SO, 0x64, "SO") 118 119/* Automatic variable in the stack. Value is offset from frame pointer. 120 Also used for type descriptions. */ 121__define_stab (N_LSYM, 0x80, "LSYM") 122 123/* Beginning of an include file. Only Sun uses this. 124 In an object file, only the name is significant. 125 The Sun linker puts data into some of the other fields. */ 126__define_stab (N_BINCL, 0x82, "BINCL") 127 128/* Name of sub-source file (#include file). 129 Value is starting text address of the compilation. */ 130__define_stab (N_SOL, 0x84, "SOL") 131 132/* Parameter variable. Value is offset from argument pointer. 133 (On most machines the argument pointer is the same as the frame pointer. */ 134__define_stab (N_PSYM, 0xa0, "PSYM") 135 136/* End of an include file. No name. 137 This and N_BINCL act as brackets around the file's output. 138 In an object file, there is no significant data in this entry. 139 The Sun linker puts data into some of the fields. */ 140__define_stab (N_EINCL, 0xa2, "EINCL") 141 142/* Alternate entry point. Value is its address. */ 143__define_stab (N_ENTRY, 0xa4, "ENTRY") 144 145/* Beginning of lexical block. 146 The desc is the nesting level in lexical blocks. 147 The value is the address of the start of the text for the block. 148 The variables declared inside the block *precede* the N_LBRAC symbol. */ 149__define_stab (N_LBRAC, 0xc0, "LBRAC") 150 151/* Place holder for deleted include file. Replaces a N_BINCL and everything 152 up to the corresponding N_EINCL. The Sun linker generates these when 153 it finds multiple identical copies of the symbols from an include file. 154 This appears only in output from the Sun linker. */ 155__define_stab (N_EXCL, 0xc2, "EXCL") 156 157/* Modula-2 scope information. Can someone say what info it contains? */ 158__define_stab (N_SCOPE, 0xc4, "SCOPE") 159 160/* End of a lexical block. Desc matches the N_LBRAC's desc. 161 The value is the address of the end of the text for the block. */ 162__define_stab (N_RBRAC, 0xe0, "RBRAC") 163 164/* Begin named common block. Only the name is significant. */ 165__define_stab (N_BCOMM, 0xe2, "BCOMM") 166 167/* End named common block. Only the name is significant 168 (and it should match the N_BCOMM). */ 169__define_stab (N_ECOMM, 0xe4, "ECOMM") 170 171/* End common (local name): value is address. 172 I'm not sure how this is used. */ 173__define_stab (N_ECOML, 0xe8, "ECOML") 174 175/* These STAB's are used on Gould systems for Non-Base register symbols 176 or something like that. FIXME. I have assigned the values at random 177 since I don't have a Gould here. Fixups from Gould folk welcome... */ 178__define_stab (N_NBTEXT, 0xF0, "NBTEXT") 179__define_stab (N_NBDATA, 0xF2, "NBDATA") 180__define_stab (N_NBBSS, 0xF4, "NBBSS") 181__define_stab (N_NBSTS, 0xF6, "NBSTS") 182__define_stab (N_NBLCS, 0xF8, "NBLCS") 183 184/* Second symbol entry containing a length-value for the preceding entry. 185 The value is the length. */ 186__define_stab (N_LENG, 0xfe, "LENG") 187 188/* The above information, in matrix format. 189 190 STAB MATRIX 191 _________________________________________________ 192 | 00 - 1F are not dbx stab symbols | 193 | In most cases, the low bit is the EXTernal bit| 194 195 | 00 UNDEF | 02 ABS | 04 TEXT | 06 DATA | 196 | 01 |EXT | 03 |EXT | 05 |EXT | 07 |EXT | 197 198 | 08 BSS | 0A INDR | 0C FN_SEQ | 0E | 199 | 09 |EXT | 0B | 0D | 0F | 200 201 | 10 | 12 COMM | 14 SETA | 16 SETT | 202 | 11 | 13 | 15 | 17 | 203 204 | 18 SETD | 1A SETB | 1C SETV | 1E WARNING| 205 | 19 | 1B | 1D | 1F FN | 206 207 |_______________________________________________| 208 | Debug entries with bit 01 set are unused. | 209 | 20 GSYM | 22 FNAME | 24 FUN | 26 STSYM | 210 | 28 LCSYM | 2A MAIN | 2C | 2E BNSYM | 211 | 30 PC | 32 NSYMS | 34 NOMAP | 36 | 212 | 38 OBJ | 3A | 3C OPT | 3E | 213 | 40 RSYM | 42 M2C | 44 SLINE | 46 DSLINE | 214 | 48 BSLINE*| 4A DEFD | 4C | 4E ENSYM | 215 | 50 EHDECL*| 52 | 54 CATCH | 56 | 216 | 58 | 5A | 5C | 5E | 217 | 60 SSYM | 62 | 64 SO | 66 | 218 | 68 | 6A | 6C | 6E | 219 | 70 | 72 | 74 | 76 | 220 | 78 | 7A | 7C | 7E | 221 | 80 LSYM | 82 BINCL | 84 SOL | 86 | 222 | 88 | 8A | 8C | 8E | 223 | 90 | 92 | 94 | 96 | 224 | 98 | 9A | 9C | 9E | 225 | A0 PSYM | A2 EINCL | A4 ENTRY | A6 | 226 | A8 | AA | AC | AE | 227 | B0 | B2 | B4 | B6 | 228 | B8 | BA | BC | BE | 229 | C0 LBRAC | C2 EXCL | C4 SCOPE | C6 | 230 | C8 | CA | CC | CE | 231 | D0 | D2 | D4 | D6 | 232 | D8 | DA | DC | DE | 233 | E0 RBRAC | E2 BCOMM | E4 ECOMM | E6 | 234 | E8 ECOML | EA | EC | EE | 235 | F0 | F2 | F4 | F6 | 236 | F8 | FA | FC | FE LENG | 237 +-----------------------------------------------+ 238 * 50 EHDECL is also MOD2. 239 * 48 BSLINE is also BROWS. 240 */ 241