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