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1.1 ! root 1: /* Table of DBX symbol codes for the GNU system. ! 2: Copyright (C) 1988, 1991 Free Software Foundation, Inc. ! 3: ! 4: This program is free software; you can redistribute it and/or modify ! 5: it under the terms of the GNU General Public License as published by ! 6: the Free Software Foundation; either version 2 of the License, or ! 7: (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., 675 Mass Ave, Cambridge, MA 02139, USA. */ ! 17: ! 18: /* New stab from Solaris 2. This uses an n_type of 0, which in a.out files ! 19: overlaps the N_UNDF used for ordinary symbols. In ELF files, the ! 20: debug information is in a different file section, so there is no conflict. ! 21: This symbol's n_value gives the size of the string section associated ! 22: with this file. The symbol's n_strx (relative to the just-updated ! 23: string section start address) gives the name of the source file, ! 24: e.g. "foo.c", without any path information. The symbol's n_desc gives ! 25: the count of upcoming symbols associated with this file (not including ! 26: this one). */ ! 27: /* __define_stab (N_UNDF, 0x00, "UNDF") */ ! 28: ! 29: /* Global variable. Only the name is significant. ! 30: To find the address, look in the corresponding external symbol. */ ! 31: __define_stab (N_GSYM, 0x20, "GSYM") ! 32: ! 33: /* Function name for BSD Fortran. Only the name is significant. ! 34: To find the address, look in the corresponding external symbol. */ ! 35: __define_stab (N_FNAME, 0x22, "FNAME") ! 36: ! 37: /* Function name or text-segment variable for C. Value is its address. ! 38: Desc is supposedly starting line number, but GCC doesn't set it ! 39: and DBX seems not to miss it. ! 40: N_FUN entries can now contain an argument type list after the function's ! 41: return type, with a ';' preceding each argument type. An argument type ! 42: of 0 means "...". Also, function prototypes (as opposed to definitions) ! 43: are described as N_FUN with a 'P' type after the name ("printf:P1;"etc). */ ! 44: __define_stab (N_FUN, 0x24, "FUN") ! 45: ! 46: /* Data-segment variable with internal linkage. Value is its address. ! 47: "Static Sym". */ ! 48: __define_stab (N_STSYM, 0x26, "STSYM") ! 49: ! 50: /* BSS-segment variable with internal linkage. Value is its address. */ ! 51: __define_stab (N_LCSYM, 0x28, "LCSYM") ! 52: ! 53: /* Name of main routine. Only the name is significant. */ ! 54: __define_stab (N_MAIN, 0x2a, "MAIN") ! 55: ! 56: /* Solaris2: Read-only data symbols. */ ! 57: __define_stab (N_ROSYM, 0x2c, "ROSYM") ! 58: ! 59: /* Global symbol in Pascal. ! 60: Supposedly the value is its line number; I'm skeptical. */ ! 61: __define_stab (N_PC, 0x30, "PC") ! 62: ! 63: /* Number of symbols: 0, files,,funcs,lines according to Ultrix V4.0. */ ! 64: __define_stab (N_NSYMS, 0x32, "NSYMS") ! 65: ! 66: /* "No DST map for sym: name, ,0,type,ignored" according to Ultrix V4.0. */ ! 67: __define_stab (N_NOMAP, 0x34, "NOMAP") ! 68: ! 69: /* New stab from Solaris 2. Like N_SO, but for the object file. Two in ! 70: a row provide the build directory and the relative path of the .o from it. ! 71: Solaris2 uses this to avoid putting the stabs info into the linked ! 72: executable; this stab goes into the ".stab.index" section, and the debugger ! 73: reads the real stabs directly from the .o files instead. */ ! 74: __define_stab (N_OBJ, 0x38, "OBJ") ! 75: ! 76: /* New stab from Solaris 2. Options for the debugger, related to the ! 77: source language for this module. E.g. whether to use ANSI ! 78: integral promotions or traditional integral promotions. */ ! 79: __define_stab (N_OPT, 0x3c, "OPT") ! 80: ! 81: /* Register variable. Value is number of register. */ ! 82: __define_stab (N_RSYM, 0x40, "RSYM") ! 83: ! 84: /* Modula-2 compilation unit. Can someone say what info it contains? */ ! 85: __define_stab (N_M2C, 0x42, "M2C") ! 86: ! 87: /* Line number in text segment. Desc is the line number; ! 88: value is corresponding address. On Solaris2, the line number is ! 89: relative to the start of the current function. */ ! 90: __define_stab (N_SLINE, 0x44, "SLINE") ! 91: ! 92: /* Similar, for data segment. */ ! 93: __define_stab (N_DSLINE, 0x46, "DSLINE") ! 94: ! 95: /* Similar, for bss segment. */ ! 96: __define_stab (N_BSLINE, 0x48, "BSLINE") ! 97: ! 98: /* Sun's source-code browser stabs. ?? Don't know what the fields are. ! 99: Supposedly the field is "path to associated .cb file". THIS VALUE ! 100: OVERLAPS WITH N_BSLINE! */ ! 101: __define_stab (N_BROWS, 0x48, "BROWS") ! 102: ! 103: /* GNU Modula-2 definition module dependency. Value is the modification time ! 104: of the definition file. Other is non-zero if it is imported with the ! 105: GNU M2 keyword %INITIALIZE. Perhaps N_M2C can be used if there ! 106: are enough empty fields? */ ! 107: __define_stab(N_DEFD, 0x4a, "DEFD") ! 108: ! 109: /* New in Solaris2. Function start/body/end line numbers. */ ! 110: __define_stab(N_FLINE, 0x4C, "FLINE") ! 111: ! 112: /* THE FOLLOWING TWO STAB VALUES CONFLICT. Happily, one is for Modula-2 ! 113: and one is for C++. Still,... */ ! 114: /* GNU C++ exception variable. Name is variable name. */ ! 115: __define_stab (N_EHDECL, 0x50, "EHDECL") ! 116: /* Modula2 info "for imc": name,,0,0,0 according to Ultrix V4.0. */ ! 117: __define_stab (N_MOD2, 0x50, "MOD2") ! 118: ! 119: /* GNU C++ `catch' clause. Value is its address. Desc is nonzero if ! 120: this entry is immediately followed by a CAUGHT stab saying what exception ! 121: was caught. Multiple CAUGHT stabs means that multiple exceptions ! 122: can be caught here. If Desc is 0, it means all exceptions are caught ! 123: here. */ ! 124: __define_stab (N_CATCH, 0x54, "CATCH") ! 125: ! 126: /* Structure or union element. Value is offset in the structure. */ ! 127: __define_stab (N_SSYM, 0x60, "SSYM") ! 128: ! 129: /* Solaris2: Last stab emitted for module. */ ! 130: __define_stab (N_ENDM, 0x62, "ENDM") ! 131: ! 132: /* Name of main source file. ! 133: Value is starting text address of the compilation. ! 134: If multiple N_SO's appear, the first to contain a trailing / is the ! 135: compilation directory. The first to not contain a trailing / is the ! 136: source file name, relative to the compilation directory. Others (perhaps ! 137: resulting from cfront) are ignored. ! 138: On Solaris2, value is undefined, but desc is a source-language code. */ ! 139: ! 140: __define_stab (N_SO, 0x64, "SO") ! 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: /* End of a lexical block. Desc matches the N_LBRAC's desc. ! 185: The value is the address of the end of the text for the block. ! 186: On Solaris2, the value is relative to the start of the current function. */ ! 187: __define_stab (N_RBRAC, 0xe0, "RBRAC") ! 188: ! 189: /* Begin named common block. Only the name is significant. */ ! 190: __define_stab (N_BCOMM, 0xe2, "BCOMM") ! 191: ! 192: /* End named common block. Only the name is significant ! 193: (and it should match the N_BCOMM). */ ! 194: __define_stab (N_ECOMM, 0xe4, "ECOMM") ! 195: ! 196: /* End common (local name): value is address. ! 197: I'm not sure how this is used. */ ! 198: __define_stab (N_ECOML, 0xe8, "ECOML") ! 199: ! 200: /* Solaris2: Pascal "with" statement: type,,0,0,offset */ ! 201: __define_stab (N_WITH, 0xea, "WITH") ! 202: ! 203: /* These STAB's are used on Gould systems for Non-Base register symbols ! 204: or something like that. FIXME. I have assigned the values at random ! 205: since I don't have a Gould here. Fixups from Gould folk welcome... */ ! 206: __define_stab (N_NBTEXT, 0xF0, "NBTEXT") ! 207: __define_stab (N_NBDATA, 0xF2, "NBDATA") ! 208: __define_stab (N_NBBSS, 0xF4, "NBBSS") ! 209: __define_stab (N_NBSTS, 0xF6, "NBSTS") ! 210: __define_stab (N_NBLCS, 0xF8, "NBLCS") ! 211: ! 212: /* Second symbol entry containing a length-value for the preceding entry. ! 213: The value is the length. */ ! 214: __define_stab (N_LENG, 0xfe, "LENG") ! 215: ! 216: /* The above information, in matrix format. ! 217: ! 218: STAB MATRIX ! 219: _________________________________________________ ! 220: | 00 - 1F are not dbx stab symbols | ! 221: | In most cases, the low bit is the EXTernal bit| ! 222: ! 223: | 00 UNDEF | 02 ABS | 04 TEXT | 06 DATA | ! 224: | 01 |EXT | 03 |EXT | 05 |EXT | 07 |EXT | ! 225: ! 226: | 08 BSS | 0A INDR | 0C FN_SEQ | 0E | ! 227: | 09 |EXT | 0B | 0D | 0F | ! 228: ! 229: | 10 | 12 COMM | 14 SETA | 16 SETT | ! 230: | 11 | 13 | 15 | 17 | ! 231: ! 232: | 18 SETD | 1A SETB | 1C SETV | 1E WARNING| ! 233: | 19 | 1B | 1D | 1F FN | ! 234: ! 235: |_______________________________________________| ! 236: | Debug entries with bit 01 set are unused. | ! 237: | 20 GSYM | 22 FNAME | 24 FUN | 26 STSYM | ! 238: | 28 LCSYM | 2A MAIN | 2C ROSYM | 2E | ! 239: | 30 PC | 32 NSYMS | 34 NOMAP | 36 | ! 240: | 38 OBJ | 3A | 3C OPT | 3E | ! 241: | 40 RSYM | 42 M2C | 44 SLINE | 46 DSLINE | ! 242: | 48 BSLINE*| 4A DEFD | 4C FLINE | 4E | ! 243: | 50 EHDECL*| 52 | 54 CATCH | 56 | ! 244: | 58 | 5A | 5C | 5E | ! 245: | 60 SSYM | 62 ENDM | 64 SO | 66 | ! 246: | 68 | 6A | 6C | 6E | ! 247: | 70 | 72 | 74 | 76 | ! 248: | 78 | 7A | 7C | 7E | ! 249: | 80 LSYM | 82 BINCL | 84 SOL | 86 | ! 250: | 88 | 8A | 8C | 8E | ! 251: | 90 | 92 | 94 | 96 | ! 252: | 98 | 9A | 9C | 9E | ! 253: | A0 PSYM | A2 EINCL | A4 ENTRY | A6 | ! 254: | A8 | AA | AC | AE | ! 255: | B0 | B2 | B4 | B6 | ! 256: | B8 | BA | BC | BE | ! 257: | C0 LBRAC | C2 EXCL | C4 SCOPE | C6 | ! 258: | C8 | CA | CC | CE | ! 259: | D0 | D2 | D4 | D6 | ! 260: | D8 | DA | DC | DE | ! 261: | E0 RBRAC | E2 BCOMM | E4 ECOMM | E6 | ! 262: | E8 ECOML | EA WITH | EC | EE | ! 263: | F0 | F2 | F4 | F6 | ! 264: | F8 | FA | FC | FE LENG | ! 265: +-----------------------------------------------+ ! 266: * 50 EHDECL is also MOD2. ! 267: * 48 BSLINE is also BROWS. ! 268: */
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