1 /* Table of DBX symbol codes for the GNU system. 2 Copyright (C) 1988-2016 Free Software Foundation, Inc. 3 4 This program is free software; you can redistribute it and/or 5 modify it under the terms of the GNU General Public License as 6 published by the Free Software Foundation; either version 3 of the 7 License, or (at your option) any later version. 8 9 This program is distributed in the hope that it will be useful, 10 but WITHOUT ANY WARRANTY; without even the implied warranty of 11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 12 GNU General Public License for more details. 13 14 You should have received a copy of the GNU General Public License 15 along with this program; if not, write to the Free Software 16 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, 17 MA 02110-1301, USA. */ 18 19 /* New stab from Solaris 2. This uses an n_type of 0, which in a.out files 21 overlaps the N_UNDF used for ordinary symbols. In ELF files, the 22 debug information is in a different file section, so there is no conflict. 23 This symbol's n_value gives the size of the string section associated 24 with this file. The symbol's n_strx (relative to the just-updated 25 string section start address) gives the name of the source file, 26 e.g. "foo.c", without any path information. The symbol's n_desc gives 27 the count of upcoming symbols associated with this file (not including 28 this one). */ 29 /* __define_stab (N_UNDF, 0x00, "UNDF") */ 30 31 /* Global variable. Only the name is significant. 32 To find the address, look in the corresponding external symbol. */ 33 __define_stab (N_GSYM, 0x20, "GSYM") 34 35 /* Function name for BSD Fortran. Only the name is significant. 36 To find the address, look in the corresponding external symbol. */ 37 __define_stab (N_FNAME, 0x22, "FNAME") 38 39 /* Function name or text-segment variable for C. Value is its address. 40 Desc is supposedly starting line number, but GCC doesn't set it 41 and DBX seems not to miss it. */ 42 __define_stab (N_FUN, 0x24, "FUN") 43 44 /* Data-segment variable with internal linkage. Value is its address. 45 "Static Sym". */ 46 __define_stab (N_STSYM, 0x26, "STSYM") 47 48 /* BSS-segment variable with internal linkage. Value is its address. */ 49 __define_stab (N_LCSYM, 0x28, "LCSYM") 50 51 /* Name of main routine. Only the name is significant. */ 52 __define_stab (N_MAIN, 0x2a, "MAIN") 53 54 /* Solaris2: Read-only data symbols. */ 55 __define_stab (N_ROSYM, 0x2c, "ROSYM") 56 57 /* MacOS X: 58 The beginning of a relocatable function block - including stabs. */ 59 __define_stab (N_BNSYM, 0x2e, "BNSYM") 60 61 /* Global symbol in Pascal. 62 Supposedly the value is its line number; I'm skeptical. */ 63 __define_stab (N_PC, 0x30, "PC") 64 65 /* Number of symbols: 0, files,,funcs,lines according to Ultrix V4.0. */ 66 __define_stab (N_NSYMS, 0x32, "NSYMS") 67 68 /* "No DST map for sym: name, ,0,type,ignored" according to Ultrix V4.0. */ 69 __define_stab (N_NOMAP, 0x34, "NOMAP") 70 71 /* New stab from Solaris 2. Like N_SO, but for the object file. Two in 72 a row provide the build directory and the relative path of the .o from it. 73 Solaris2 uses this to avoid putting the stabs info into the linked 74 executable; this stab goes into the ".stab.index" section, and the debugger 75 reads the real stabs directly from the .o files instead. */ 76 __define_stab (N_OBJ, 0x38, "OBJ") 77 78 /* New stab from Solaris 2. Options for the debugger, related to the 79 source language for this module. E.g. whether to use ANSI 80 integral promotions or traditional integral promotions. */ 81 __define_stab (N_OPT, 0x3c, "OPT") 82 83 /* Register variable. Value is number of register. */ 84 __define_stab (N_RSYM, 0x40, "RSYM") 85 86 /* Modula-2 compilation unit. Can someone say what info it contains? */ 87 __define_stab (N_M2C, 0x42, "M2C") 88 89 /* Line number in text segment. Desc is the line number; 90 value is corresponding address. On Solaris2, the line number is 91 relative to the start of the current function. */ 92 __define_stab (N_SLINE, 0x44, "SLINE") 93 94 /* Similar, for data segment. */ 95 __define_stab (N_DSLINE, 0x46, "DSLINE") 96 97 /* Similar, for bss segment. */ 98 __define_stab (N_BSLINE, 0x48, "BSLINE") 99 100 /* Sun's source-code browser stabs. ?? Don't know what the fields are. 101 Supposedly the field is "path to associated .cb file". THIS VALUE 102 OVERLAPS WITH N_BSLINE! */ 103 __define_stab_duplicate (N_BROWS, 0x48, "BROWS") 104 105 /* GNU Modula-2 definition module dependency. Value is the modification time 106 of the definition file. Other is non-zero if it is imported with the 107 GNU M2 keyword %INITIALIZE. Perhaps N_M2C can be used if there 108 are enough empty fields? */ 109 __define_stab(N_DEFD, 0x4a, "DEFD") 110 111 /* New in Solaris2. Function start/body/end line numbers. */ 112 __define_stab(N_FLINE, 0x4C, "FLINE") 113 114 /* MacOS X: This tells the end of a relocatable function + debugging info. */ 115 __define_stab(N_ENSYM, 0x4E, "ENSYM") 116 117 /* THE FOLLOWING TWO STAB VALUES CONFLICT. Happily, one is for Modula-2 118 and one is for C++. Still,... */ 119 /* GNU C++ exception variable. Name is variable name. */ 120 __define_stab (N_EHDECL, 0x50, "EHDECL") 121 /* Modula2 info "for imc": name,,0,0,0 according to Ultrix V4.0. */ 122 __define_stab_duplicate (N_MOD2, 0x50, "MOD2") 123 124 /* GNU C++ `catch' clause. Value is its address. Desc is nonzero if 125 this entry is immediately followed by a CAUGHT stab saying what exception 126 was caught. Multiple CAUGHT stabs means that multiple exceptions 127 can be caught here. If Desc is 0, it means all exceptions are caught 128 here. */ 129 __define_stab (N_CATCH, 0x54, "CATCH") 130 131 /* Structure or union element. Value is offset in the structure. */ 132 __define_stab (N_SSYM, 0x60, "SSYM") 133 134 /* Solaris2: Last stab emitted for module. */ 135 __define_stab (N_ENDM, 0x62, "ENDM") 136 137 /* Name of main source file. 138 Value is starting text address of the compilation. 139 If multiple N_SO's appear, the first to contain a trailing / is the 140 compilation directory. The first to not contain a trailing / is the 141 source file name, relative to the compilation directory. Others (perhaps 142 resulting from cfront) are ignored. 143 On Solaris2, value is undefined, but desc is a source-language code. */ 144 145 __define_stab (N_SO, 0x64, "SO") 146 147 /* Apple: This is the stab that associated the .o file with the 148 N_SO stab, in the case where debug info is mostly stored in the .o file. */ 149 __define_stab (N_OSO, 0x66, "OSO") 150 151 /* SunPro F77: Name of alias. */ 152 __define_stab (N_ALIAS, 0x6c, "ALIAS") 153 154 /* Automatic variable in the stack. Value is offset from frame pointer. 155 Also used for type descriptions. */ 156 __define_stab (N_LSYM, 0x80, "LSYM") 157 158 /* Beginning of an include file. Only Sun uses this. 159 In an object file, only the name is significant. 160 The Sun linker puts data into some of the other fields. */ 161 __define_stab (N_BINCL, 0x82, "BINCL") 162 163 /* Name of sub-source file (#include file). 164 Value is starting text address of the compilation. */ 165 __define_stab (N_SOL, 0x84, "SOL") 166 167 /* Parameter variable. Value is offset from argument pointer. 168 (On most machines the argument pointer is the same as the frame pointer. */ 169 __define_stab (N_PSYM, 0xa0, "PSYM") 170 171 /* End of an include file. No name. 172 This and N_BINCL act as brackets around the file's output. 173 In an object file, there is no significant data in this entry. 174 The Sun linker puts data into some of the fields. */ 175 __define_stab (N_EINCL, 0xa2, "EINCL") 176 177 /* Alternate entry point. Value is its address. */ 178 __define_stab (N_ENTRY, 0xa4, "ENTRY") 179 180 /* Beginning of lexical block. 181 The desc is the nesting level in lexical blocks. 182 The value is the address of the start of the text for the block. 183 The variables declared inside the block *precede* the N_LBRAC symbol. 184 On Solaris2, the value is relative to the start of the current function. */ 185 __define_stab (N_LBRAC, 0xc0, "LBRAC") 186 187 /* Place holder for deleted include file. Replaces a N_BINCL and everything 188 up to the corresponding N_EINCL. The Sun linker generates these when 189 it finds multiple identical copies of the symbols from an include file. 190 This appears only in output from the Sun linker. */ 191 __define_stab (N_EXCL, 0xc2, "EXCL") 192 193 /* Modula-2 scope information. Can someone say what info it contains? */ 194 __define_stab (N_SCOPE, 0xc4, "SCOPE") 195 196 /* Solaris2: Patch Run Time Checker. */ 197 __define_stab (N_PATCH, 0xd0, "PATCH") 198 199 /* End of a lexical block. Desc matches the N_LBRAC's desc. 200 The value is the address of the end of the text for the block. 201 On Solaris2, the value is relative to the start of the current function. */ 202 __define_stab (N_RBRAC, 0xe0, "RBRAC") 203 204 /* Begin named common block. Only the name is significant. */ 205 __define_stab (N_BCOMM, 0xe2, "BCOMM") 206 207 /* End named common block. Only the name is significant 208 (and it should match the N_BCOMM). */ 209 __define_stab (N_ECOMM, 0xe4, "ECOMM") 210 211 /* Member of a common block; value is offset within the common block. 212 This should occur within a BCOMM/ECOMM pair. */ 213 __define_stab (N_ECOML, 0xe8, "ECOML") 214 215 /* Solaris2: Pascal "with" statement: type,,0,0,offset */ 216 __define_stab (N_WITH, 0xea, "WITH") 217 218 /* These STAB's are used on Gould systems for Non-Base register symbols 219 or something like that. FIXME. I have assigned the values at random 220 since I don't have a Gould here. Fixups from Gould folk welcome... */ 221 __define_stab (N_NBTEXT, 0xF0, "NBTEXT") 222 __define_stab (N_NBDATA, 0xF2, "NBDATA") 223 __define_stab (N_NBBSS, 0xF4, "NBBSS") 224 __define_stab (N_NBSTS, 0xF6, "NBSTS") 225 __define_stab (N_NBLCS, 0xF8, "NBLCS") 226 227 /* Second symbol entry containing a length-value for the preceding entry. 228 The value is the length. */ 229 __define_stab (N_LENG, 0xfe, "LENG") 230 231 /* The above information, in matrix format. 233 234 STAB MATRIX 235 _________________________________________________ 236 | 00 - 1F are not dbx stab symbols | 237 | In most cases, the low bit is the EXTernal bit| 238 239 | 00 UNDEF | 02 ABS | 04 TEXT | 06 DATA | 240 | 01 |EXT | 03 |EXT | 05 |EXT | 07 |EXT | 241 242 | 08 BSS | 0A INDR | 0C FN_SEQ | 0E WEAKA | 243 | 09 |EXT | 0B | 0D WEAKU | 0F WEAKT | 244 245 | 10 WEAKD | 12 COMM | 14 SETA | 16 SETT | 246 | 11 WEAKB | 13 | 15 | 17 | 247 248 | 18 SETD | 1A SETB | 1C SETV | 1E WARNING| 249 | 19 | 1B | 1D | 1F FN | 250 251 |_______________________________________________| 252 | Debug entries with bit 01 set are unused. | 253 | 20 GSYM | 22 FNAME | 24 FUN | 26 STSYM | 254 | 28 LCSYM | 2A MAIN | 2C ROSYM | 2E | 255 | 30 PC | 32 NSYMS | 34 NOMAP | 36 | 256 | 38 OBJ | 3A | 3C OPT | 3E | 257 | 40 RSYM | 42 M2C | 44 SLINE | 46 DSLINE | 258 | 48 BSLINE*| 4A DEFD | 4C FLINE | 4E | 259 | 50 EHDECL*| 52 | 54 CATCH | 56 | 260 | 58 | 5A | 5C | 5E | 261 | 60 SSYM | 62 ENDM | 64 SO | 66 | 262 | 68 | 6A | 6C ALIAS | 6E | 263 | 70 | 72 | 74 | 76 | 264 | 78 | 7A | 7C | 7E | 265 | 80 LSYM | 82 BINCL | 84 SOL | 86 | 266 | 88 | 8A | 8C | 8E | 267 | 90 | 92 | 94 | 96 | 268 | 98 | 9A | 9C | 9E | 269 | A0 PSYM | A2 EINCL | A4 ENTRY | A6 | 270 | A8 | AA | AC | AE | 271 | B0 | B2 | B4 | B6 | 272 | B8 | BA | BC | BE | 273 | C0 LBRAC | C2 EXCL | C4 SCOPE | C6 | 274 | C8 | CA | CC | CE | 275 | D0 PATCH | D2 | D4 | D6 | 276 | D8 | DA | DC | DE | 277 | E0 RBRAC | E2 BCOMM | E4 ECOMM | E6 | 278 | E8 ECOML | EA WITH | EC | EE | 279 | F0 | F2 | F4 | F6 | 280 | F8 | FA | FC | FE LENG | 281 +-----------------------------------------------+ 282 * 50 EHDECL is also MOD2. 283 * 48 BSLINE is also BROWS. 284 */ 285
