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 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/* MacOS X: 57 The beginning of a relocatable function block - including stabs. */ 58__define_stab (N_BNSYM, 0x2e, "BNSYM") 59 60/* Global symbol in Pascal. 61 Supposedly the value is its line number; I'm skeptical. */ 62__define_stab (N_PC, 0x30, "PC") 63 64/* Number of symbols: 0, files,,funcs,lines according to Ultrix V4.0. */ 65__define_stab (N_NSYMS, 0x32, "NSYMS") 66 67/* "No DST map for sym: name, ,0,type,ignored" according to Ultrix V4.0. */ 68__define_stab (N_NOMAP, 0x34, "NOMAP") 69 70/* New stab from Solaris 2. Like N_SO, but for the object file. Two in 71 a row provide the build directory and the relative path of the .o from it. 72 Solaris2 uses this to avoid putting the stabs info into the linked 73 executable; this stab goes into the ".stab.index" section, and the debugger 74 reads the real stabs directly from the .o files instead. */ 75__define_stab (N_OBJ, 0x38, "OBJ") 76 77/* New stab from Solaris 2. Options for the debugger, related to the 78 source language for this module. E.g. whether to use ANSI 79 integral promotions or traditional integral promotions. */ 80__define_stab (N_OPT, 0x3c, "OPT") 81 82/* Register variable. Value is number of register. */ 83__define_stab (N_RSYM, 0x40, "RSYM") 84 85/* Modula-2 compilation unit. Can someone say what info it contains? */ 86__define_stab (N_M2C, 0x42, "M2C") 87 88/* Line number in text segment. Desc is the line number; 89 value is corresponding address. On Solaris2, the line number is 90 relative to the start of the current function. */ 91__define_stab (N_SLINE, 0x44, "SLINE") 92 93/* Similar, for data segment. */ 94__define_stab (N_DSLINE, 0x46, "DSLINE") 95 96/* Similar, for bss segment. */ 97__define_stab (N_BSLINE, 0x48, "BSLINE") 98 99/* Sun's source-code browser stabs. ?? Don't know what the fields are. 100 Supposedly the field is "path to associated .cb file". THIS VALUE 101 OVERLAPS WITH N_BSLINE! */ 102__define_stab_duplicate (N_BROWS, 0x48, "BROWS") 103 104/* GNU Modula-2 definition module dependency. Value is the modification time 105 of the definition file. Other is non-zero if it is imported with the 106 GNU M2 keyword %INITIALIZE. Perhaps N_M2C can be used if there 107 are enough empty fields? */ 108__define_stab(N_DEFD, 0x4a, "DEFD") 109 110/* New in Solaris2. Function start/body/end line numbers. */ 111__define_stab(N_FLINE, 0x4C, "FLINE") 112 113/* MacOS X: This tells the end of a relocatable function + debugging info. */ 114__define_stab(N_ENSYM, 0x4E, "ENSYM") 115 116/* THE FOLLOWING TWO STAB VALUES CONFLICT. Happily, one is for Modula-2 117 and one is for C++. Still,... */ 118/* GNU C++ exception variable. Name is variable name. */ 119__define_stab (N_EHDECL, 0x50, "EHDECL") 120/* Modula2 info "for imc": name,,0,0,0 according to Ultrix V4.0. */ 121__define_stab_duplicate (N_MOD2, 0x50, "MOD2") 122 123/* GNU C++ `catch' clause. Value is its address. Desc is nonzero if 124 this entry is immediately followed by a CAUGHT stab saying what exception 125 was caught. Multiple CAUGHT stabs means that multiple exceptions 126 can be caught here. If Desc is 0, it means all exceptions are caught 127 here. */ 128__define_stab (N_CATCH, 0x54, "CATCH") 129 130/* Structure or union element. Value is offset in the structure. */ 131__define_stab (N_SSYM, 0x60, "SSYM") 132 133/* Solaris2: Last stab emitted for module. */ 134__define_stab (N_ENDM, 0x62, "ENDM") 135 136/* Name of main source file. 137 Value is starting text address of the compilation. 138 If multiple N_SO's appear, the first to contain a trailing / is the 139 compilation directory. The first to not contain a trailing / is the 140 source file name, relative to the compilation directory. Others (perhaps 141 resulting from cfront) are ignored. 142 On Solaris2, value is undefined, but desc is a source-language code. */ 143 144__define_stab (N_SO, 0x64, "SO") 145 146/* Apple: This is the stab that associated the .o file with the 147 N_SO stab, in the case where debug info is mostly stored in the .o file. */ 148__define_stab (N_OSO, 0x66, "OSO") 149 150/* SunPro F77: Name of alias. */ 151__define_stab (N_ALIAS, 0x6c, "ALIAS") 152 153/* Automatic variable in the stack. Value is offset from frame pointer. 154 Also used for type descriptions. */ 155__define_stab (N_LSYM, 0x80, "LSYM") 156 157/* Beginning of an include file. Only Sun uses this. 158 In an object file, only the name is significant. 159 The Sun linker puts data into some of the other fields. */ 160__define_stab (N_BINCL, 0x82, "BINCL") 161 162/* Name of sub-source file (#include file). 163 Value is starting text address of the compilation. */ 164__define_stab (N_SOL, 0x84, "SOL") 165 166/* Parameter variable. Value is offset from argument pointer. 167 (On most machines the argument pointer is the same as the frame pointer. */ 168__define_stab (N_PSYM, 0xa0, "PSYM") 169 170/* End of an include file. No name. 171 This and N_BINCL act as brackets around the file's output. 172 In an object file, there is no significant data in this entry. 173 The Sun linker puts data into some of the fields. */ 174__define_stab (N_EINCL, 0xa2, "EINCL") 175 176/* Alternate entry point. Value is its address. */ 177__define_stab (N_ENTRY, 0xa4, "ENTRY") 178 179/* Beginning of lexical block. 180 The desc is the nesting level in lexical blocks. 181 The value is the address of the start of the text for the block. 182 The variables declared inside the block *precede* the N_LBRAC symbol. 183 On Solaris2, the value is relative to the start of the current function. */ 184__define_stab (N_LBRAC, 0xc0, "LBRAC") 185 186/* Place holder for deleted include file. Replaces a N_BINCL and everything 187 up to the corresponding N_EINCL. The Sun linker generates these when 188 it finds multiple identical copies of the symbols from an include file. 189 This appears only in output from the Sun linker. */ 190__define_stab (N_EXCL, 0xc2, "EXCL") 191 192/* Modula-2 scope information. Can someone say what info it contains? */ 193__define_stab (N_SCOPE, 0xc4, "SCOPE") 194 195/* Solaris2: Patch Run Time Checker. */ 196__define_stab (N_PATCH, 0xd0, "PATCH") 197 198/* End of a lexical block. Desc matches the N_LBRAC's desc. 199 The value is the address of the end of the text for the block. 200 On Solaris2, the value is relative to the start of the current function. */ 201__define_stab (N_RBRAC, 0xe0, "RBRAC") 202 203/* Begin named common block. Only the name is significant. */ 204__define_stab (N_BCOMM, 0xe2, "BCOMM") 205 206/* End named common block. Only the name is significant 207 (and it should match the N_BCOMM). */ 208__define_stab (N_ECOMM, 0xe4, "ECOMM") 209 210/* Member of a common block; value is offset within the common block. 211 This should occur within a BCOMM/ECOMM pair. */ 212__define_stab (N_ECOML, 0xe8, "ECOML") 213 214/* Solaris2: Pascal "with" statement: type,,0,0,offset */ 215__define_stab (N_WITH, 0xea, "WITH") 216 217/* These STAB's are used on Gould systems for Non-Base register symbols 218 or something like that. FIXME. I have assigned the values at random 219 since I don't have a Gould here. Fixups from Gould folk welcome... */ 220__define_stab (N_NBTEXT, 0xF0, "NBTEXT") 221__define_stab (N_NBDATA, 0xF2, "NBDATA") 222__define_stab (N_NBBSS, 0xF4, "NBBSS") 223__define_stab (N_NBSTS, 0xF6, "NBSTS") 224__define_stab (N_NBLCS, 0xF8, "NBLCS") 225 226/* Second symbol entry containing a length-value for the preceding entry. 227 The value is the length. */ 228__define_stab (N_LENG, 0xfe, "LENG") 229 230/* The above information, in matrix format. 231 232 STAB MATRIX 233 _________________________________________________ 234 | 00 - 1F are not dbx stab symbols | 235 | In most cases, the low bit is the EXTernal bit| 236 237 | 00 UNDEF | 02 ABS | 04 TEXT | 06 DATA | 238 | 01 |EXT | 03 |EXT | 05 |EXT | 07 |EXT | 239 240 | 08 BSS | 0A INDR | 0C FN_SEQ | 0E WEAKA | 241 | 09 |EXT | 0B | 0D WEAKU | 0F WEAKT | 242 243 | 10 WEAKD | 12 COMM | 14 SETA | 16 SETT | 244 | 11 WEAKB | 13 | 15 | 17 | 245 246 | 18 SETD | 1A SETB | 1C SETV | 1E WARNING| 247 | 19 | 1B | 1D | 1F FN | 248 249 |_______________________________________________| 250 | Debug entries with bit 01 set are unused. | 251 | 20 GSYM | 22 FNAME | 24 FUN | 26 STSYM | 252 | 28 LCSYM | 2A MAIN | 2C ROSYM | 2E | 253 | 30 PC | 32 NSYMS | 34 NOMAP | 36 | 254 | 38 OBJ | 3A | 3C OPT | 3E | 255 | 40 RSYM | 42 M2C | 44 SLINE | 46 DSLINE | 256 | 48 BSLINE*| 4A DEFD | 4C FLINE | 4E | 257 | 50 EHDECL*| 52 | 54 CATCH | 56 | 258 | 58 | 5A | 5C | 5E | 259 | 60 SSYM | 62 ENDM | 64 SO | 66 | 260 | 68 | 6A | 6C ALIAS | 6E | 261 | 70 | 72 | 74 | 76 | 262 | 78 | 7A | 7C | 7E | 263 | 80 LSYM | 82 BINCL | 84 SOL | 86 | 264 | 88 | 8A | 8C | 8E | 265 | 90 | 92 | 94 | 96 | 266 | 98 | 9A | 9C | 9E | 267 | A0 PSYM | A2 EINCL | A4 ENTRY | A6 | 268 | A8 | AA | AC | AE | 269 | B0 | B2 | B4 | B6 | 270 | B8 | BA | BC | BE | 271 | C0 LBRAC | C2 EXCL | C4 SCOPE | C6 | 272 | C8 | CA | CC | CE | 273 | D0 PATCH | D2 | D4 | D6 | 274 | D8 | DA | DC | DE | 275 | E0 RBRAC | E2 BCOMM | E4 ECOMM | E6 | 276 | E8 ECOML | EA WITH | EC | EE | 277 | F0 | F2 | F4 | F6 | 278 | F8 | FA | FC | FE LENG | 279 +-----------------------------------------------+ 280 * 50 EHDECL is also MOD2. 281 * 48 BSLINE is also BROWS. 282 */ 283