1/* Table of DBX symbol codes for the GNU system. 2 Copyright 1988, 1991, 1992, 1993, 1994, 1996, 1998, 2004 3 Free Software Foundation, Inc. 4 5 This program is free software; you can redistribute it and/or 6 modify it under the terms of the GNU 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 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., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */ 18 19/* New stab from Solaris 2. This uses an n_type of 0, which in a.out files 20 overlaps the N_UNDF used for ordinary symbols. In ELF files, the 21 debug information is in a different file section, so there is no conflict. 22 This symbol's n_value gives the size of the string section associated 23 with this file. The symbol's n_strx (relative to the just-updated 24 string section start address) gives the name of the source file, 25 e.g. "foo.c", without any path information. The symbol's n_desc gives 26 the count of upcoming symbols associated with this file (not including 27 this one). */ 28/* __define_stab (N_UNDF, 0x00, "UNDF") */ 29 30/* Global variable. Only the name is significant. 31 To find the address, look in the corresponding external symbol. */ 32__define_stab (N_GSYM, 0x20, "GSYM") 33 34/* Function name for BSD Fortran. Only the name is significant. 35 To find the address, look in the corresponding external symbol. */ 36__define_stab (N_FNAME, 0x22, "FNAME") 37 38/* Function name or text-segment variable for C. Value is its address. 39 Desc is supposedly starting line number, but GCC doesn't set it 40 and DBX seems not to miss it. */ 41__define_stab (N_FUN, 0x24, "FUN") 42 43/* Data-segment variable with internal linkage. Value is its address. 44 "Static Sym". */ 45__define_stab (N_STSYM, 0x26, "STSYM") 46 47/* BSS-segment variable with internal linkage. Value is its address. */ 48__define_stab (N_LCSYM, 0x28, "LCSYM") 49 50/* Name of main routine. Only the name is significant. */ 51__define_stab (N_MAIN, 0x2a, "MAIN") 52 53/* Solaris2: Read-only data symbols. */ 54__define_stab (N_ROSYM, 0x2c, "ROSYM") 55 56/* Global symbol in Pascal. 57 Supposedly the value is its line number; I'm skeptical. */ 58__define_stab (N_PC, 0x30, "PC") 59 60/* Number of symbols: 0, files,,funcs,lines according to Ultrix V4.0. */ 61__define_stab (N_NSYMS, 0x32, "NSYMS") 62 63/* "No DST map for sym: name, ,0,type,ignored" according to Ultrix V4.0. */ 64__define_stab (N_NOMAP, 0x34, "NOMAP") 65 66/* New stab from Solaris 2. Like N_SO, but for the object file. Two in 67 a row provide the build directory and the relative path of the .o from it. 68 Solaris2 uses this to avoid putting the stabs info into the linked 69 executable; this stab goes into the ".stab.index" section, and the debugger 70 reads the real stabs directly from the .o files instead. */ 71__define_stab (N_OBJ, 0x38, "OBJ") 72 73/* New stab from Solaris 2. Options for the debugger, related to the 74 source language for this module. E.g. whether to use ANSI 75 integral promotions or traditional integral promotions. */ 76__define_stab (N_OPT, 0x3c, "OPT") 77 78/* Register variable. Value is number of register. */ 79__define_stab (N_RSYM, 0x40, "RSYM") 80 81/* Modula-2 compilation unit. Can someone say what info it contains? */ 82__define_stab (N_M2C, 0x42, "M2C") 83 84/* Line number in text segment. Desc is the line number; 85 value is corresponding address. On Solaris2, the line number is 86 relative to the start of the current function. */ 87__define_stab (N_SLINE, 0x44, "SLINE") 88 89/* Similar, for data segment. */ 90__define_stab (N_DSLINE, 0x46, "DSLINE") 91 92/* Similar, for bss segment. */ 93__define_stab (N_BSLINE, 0x48, "BSLINE") 94 95/* Sun's source-code browser stabs. ?? Don't know what the fields are. 96 Supposedly the field is "path to associated .cb file". THIS VALUE 97 OVERLAPS WITH N_BSLINE! */ 98__define_stab_duplicate (N_BROWS, 0x48, "BROWS") 99 100/* GNU Modula-2 definition module dependency. Value is the modification time 101 of the definition file. Other is non-zero if it is imported with the 102 GNU M2 keyword %INITIALIZE. Perhaps N_M2C can be used if there 103 are enough empty fields? */ 104__define_stab(N_DEFD, 0x4a, "DEFD") 105 106/* New in Solaris2. Function start/body/end line numbers. */ 107__define_stab(N_FLINE, 0x4C, "FLINE") 108 109/* THE FOLLOWING TWO STAB VALUES CONFLICT. Happily, one is for Modula-2 110 and one is for C++. Still,... */ 111/* GNU C++ exception variable. Name is variable name. */ 112__define_stab (N_EHDECL, 0x50, "EHDECL") 113/* Modula2 info "for imc": name,,0,0,0 according to Ultrix V4.0. */ 114__define_stab_duplicate (N_MOD2, 0x50, "MOD2") 115 116/* GNU C++ `catch' clause. Value is its address. Desc is nonzero if 117 this entry is immediately followed by a CAUGHT stab saying what exception 118 was caught. Multiple CAUGHT stabs means that multiple exceptions 119 can be caught here. If Desc is 0, it means all exceptions are caught 120 here. */ 121__define_stab (N_CATCH, 0x54, "CATCH") 122 123/* Structure or union element. Value is offset in the structure. */ 124__define_stab (N_SSYM, 0x60, "SSYM") 125 126/* Solaris2: Last stab emitted for module. */ 127__define_stab (N_ENDM, 0x62, "ENDM") 128 129/* Name of main source file. 130 Value is starting text address of the compilation. 131 If multiple N_SO's appear, the first to contain a trailing / is the 132 compilation directory. The first to not contain a trailing / is the 133 source file name, relative to the compilation directory. Others (perhaps 134 resulting from cfront) are ignored. 135 On Solaris2, value is undefined, but desc is a source-language code. */ 136 137__define_stab (N_SO, 0x64, "SO") 138 139/* SunPro F77: Name of alias. */ 140__define_stab (N_ALIAS, 0x6c, "ALIAS") 141 142/* Automatic variable in the stack. Value is offset from frame pointer. 143 Also used for type descriptions. */ 144__define_stab (N_LSYM, 0x80, "LSYM") 145 146/* Beginning of an include file. Only Sun uses this. 147 In an object file, only the name is significant. 148 The Sun linker puts data into some of the other fields. */ 149__define_stab (N_BINCL, 0x82, "BINCL") 150 151/* Name of sub-source file (#include file). 152 Value is starting text address of the compilation. */ 153__define_stab (N_SOL, 0x84, "SOL") 154 155/* Parameter variable. Value is offset from argument pointer. 156 (On most machines the argument pointer is the same as the frame pointer. */ 157__define_stab (N_PSYM, 0xa0, "PSYM") 158 159/* End of an include file. No name. 160 This and N_BINCL act as brackets around the file's output. 161 In an object file, there is no significant data in this entry. 162 The Sun linker puts data into some of the fields. */ 163__define_stab (N_EINCL, 0xa2, "EINCL") 164 165/* Alternate entry point. Value is its address. */ 166__define_stab (N_ENTRY, 0xa4, "ENTRY") 167 168/* Beginning of lexical block. 169 The desc is the nesting level in lexical blocks. 170 The value is the address of the start of the text for the block. 171 The variables declared inside the block *precede* the N_LBRAC symbol. 172 On Solaris2, the value is relative to the start of the current function. */ 173__define_stab (N_LBRAC, 0xc0, "LBRAC") 174 175/* Place holder for deleted include file. Replaces a N_BINCL and everything 176 up to the corresponding N_EINCL. The Sun linker generates these when 177 it finds multiple identical copies of the symbols from an include file. 178 This appears only in output from the Sun linker. */ 179__define_stab (N_EXCL, 0xc2, "EXCL") 180 181/* Modula-2 scope information. Can someone say what info it contains? */ 182__define_stab (N_SCOPE, 0xc4, "SCOPE") 183 184/* Solaris2: Patch Run Time Checker. */ 185__define_stab (N_PATCH, 0xd0, "PATCH") 186 187/* End of a lexical block. Desc matches the N_LBRAC's desc. 188 The value is the address of the end of the text for the block. 189 On Solaris2, the value is relative to the start of the current function. */ 190__define_stab (N_RBRAC, 0xe0, "RBRAC") 191 192/* Begin named common block. Only the name is significant. */ 193__define_stab (N_BCOMM, 0xe2, "BCOMM") 194 195/* End named common block. Only the name is significant 196 (and it should match the N_BCOMM). */ 197__define_stab (N_ECOMM, 0xe4, "ECOMM") 198 199/* Member of a common block; value is offset within the common block. 200 This should occur within a BCOMM/ECOMM pair. */ 201__define_stab (N_ECOML, 0xe8, "ECOML") 202 203/* Solaris2: Pascal "with" statement: type,,0,0,offset */ 204__define_stab (N_WITH, 0xea, "WITH") 205 206/* These STAB's are used on Gould systems for Non-Base register symbols 207 or something like that. FIXME. I have assigned the values at random 208 since I don't have a Gould here. Fixups from Gould folk welcome... */ 209__define_stab (N_NBTEXT, 0xF0, "NBTEXT") 210__define_stab (N_NBDATA, 0xF2, "NBDATA") 211__define_stab (N_NBBSS, 0xF4, "NBBSS") 212__define_stab (N_NBSTS, 0xF6, "NBSTS") 213__define_stab (N_NBLCS, 0xF8, "NBLCS") 214 215/* Second symbol entry containing a length-value for the preceding entry. 216 The value is the length. */ 217__define_stab (N_LENG, 0xfe, "LENG") 218 219/* The above information, in matrix format. 220 221 STAB MATRIX 222 _________________________________________________ 223 | 00 - 1F are not dbx stab symbols | 224 | In most cases, the low bit is the EXTernal bit| 225 226 | 00 UNDEF | 02 ABS | 04 TEXT | 06 DATA | 227 | 01 |EXT | 03 |EXT | 05 |EXT | 07 |EXT | 228 229 | 08 BSS | 0A INDR | 0C FN_SEQ | 0E WEAKA | 230 | 09 |EXT | 0B | 0D WEAKU | 0F WEAKT | 231 232 | 10 WEAKD | 12 COMM | 14 SETA | 16 SETT | 233 | 11 WEAKB | 13 | 15 | 17 | 234 235 | 18 SETD | 1A SETB | 1C SETV | 1E WARNING| 236 | 19 | 1B | 1D | 1F FN | 237 238 |_______________________________________________| 239 | Debug entries with bit 01 set are unused. | 240 | 20 GSYM | 22 FNAME | 24 FUN | 26 STSYM | 241 | 28 LCSYM | 2A MAIN | 2C ROSYM | 2E | 242 | 30 PC | 32 NSYMS | 34 NOMAP | 36 | 243 | 38 OBJ | 3A | 3C OPT | 3E | 244 | 40 RSYM | 42 M2C | 44 SLINE | 46 DSLINE | 245 | 48 BSLINE*| 4A DEFD | 4C FLINE | 4E | 246 | 50 EHDECL*| 52 | 54 CATCH | 56 | 247 | 58 | 5A | 5C | 5E | 248 | 60 SSYM | 62 ENDM | 64 SO | 66 | 249 | 68 | 6A | 6C ALIAS | 6E | 250 | 70 | 72 | 74 | 76 | 251 | 78 | 7A | 7C | 7E | 252 | 80 LSYM | 82 BINCL | 84 SOL | 86 | 253 | 88 | 8A | 8C | 8E | 254 | 90 | 92 | 94 | 96 | 255 | 98 | 9A | 9C | 9E | 256 | A0 PSYM | A2 EINCL | A4 ENTRY | A6 | 257 | A8 | AA | AC | AE | 258 | B0 | B2 | B4 | B6 | 259 | B8 | BA | BC | BE | 260 | C0 LBRAC | C2 EXCL | C4 SCOPE | C6 | 261 | C8 | CA | CC | CE | 262 | D0 PATCH | D2 | D4 | D6 | 263 | D8 | DA | DC | DE | 264 | E0 RBRAC | E2 BCOMM | E4 ECOMM | E6 | 265 | E8 ECOML | EA WITH | EC | EE | 266 | F0 | F2 | F4 | F6 | 267 | F8 | FA | FC | FE LENG | 268 +-----------------------------------------------+ 269 * 50 EHDECL is also MOD2. 270 * 48 BSLINE is also BROWS. 271 */ 272