1 /* Table of DBX symbol codes for the GNU system.
2 Copyright (C) 1988, 91, 92, 93, 94, 95, 1996 Free Software Foundation, Inc.
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.
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.
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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
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
28 __define_stab (N_UNDF, 0x00, "UNDF")
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")
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")
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")
43 /* Data-segment variable with internal linkage. Value is its address.
45 __define_stab (N_STSYM, 0x26, "STSYM")
47 /* BSS-segment variable with internal linkage. Value is its address. */
48 __define_stab (N_LCSYM, 0x28, "LCSYM")
50 /* Name of main routine. Only the name is significant. */
51 __define_stab (N_MAIN, 0x2a, "MAIN")
53 /* Solaris2: Read-only data symbols. */
54 __define_stab (N_ROSYM, 0x2c, "ROSYM")
56 /* Global symbol in Pascal.
57 Supposedly the value is its line number; I'm skeptical. */
58 __define_stab (N_PC, 0x30, "PC")
60 /* Number of symbols: 0, files,,funcs,lines according to Ultrix V4.0. */
61 __define_stab (N_NSYMS, 0x32, "NSYMS")
63 /* "No DST map for sym: name, ,0,type,ignored" according to Ultrix V4.0. */
64 __define_stab (N_NOMAP, 0x34, "NOMAP")
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")
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")
78 /* Register variable. Value is number of register. */
79 __define_stab (N_RSYM, 0x40, "RSYM")
81 /* Modula-2 compilation unit. Can someone say what info it contains? */
82 __define_stab (N_M2C, 0x42, "M2C")
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")
89 /* Similar, for data segment. */
90 __define_stab (N_DSLINE, 0x46, "DSLINE")
92 /* Similar, for bss segment. */
93 __define_stab (N_BSLINE, 0x48, "BSLINE")
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")
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")
106 /* New in Solaris2. Function start/body/end line numbers. */
107 __define_stab(N_FLINE, 0x4C, "FLINE")
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")
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
121 __define_stab (N_CATCH, 0x54, "CATCH")
123 /* Structure or union element. Value is offset in the structure. */
124 __define_stab (N_SSYM, 0x60, "SSYM")
126 /* Solaris2: Last stab emitted for module. */
127 __define_stab (N_ENDM, 0x62, "ENDM")
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. */
137 __define_stab (N_SO, 0x64, "SO")
139 /* Automatic variable in the stack. Value is offset from frame pointer.
140 Also used for type descriptions. */
141 __define_stab (N_LSYM, 0x80, "LSYM")
143 /* Beginning of an include file. Only Sun uses this.
144 In an object file, only the name is significant.
145 The Sun linker puts data into some of the other fields. */
146 __define_stab (N_BINCL, 0x82, "BINCL")
148 /* Name of sub-source file (#include file).
149 Value is starting text address of the compilation. */
150 __define_stab (N_SOL, 0x84, "SOL")
152 /* Parameter variable. Value is offset from argument pointer.
153 (On most machines the argument pointer is the same as the frame pointer. */
154 __define_stab (N_PSYM, 0xa0, "PSYM")
156 /* End of an include file. No name.
157 This and N_BINCL act as brackets around the file's output.
158 In an object file, there is no significant data in this entry.
159 The Sun linker puts data into some of the fields. */
160 __define_stab (N_EINCL, 0xa2, "EINCL")
162 /* Alternate entry point. Value is its address. */
163 __define_stab (N_ENTRY, 0xa4, "ENTRY")
165 /* Beginning of lexical block.
166 The desc is the nesting level in lexical blocks.
167 The value is the address of the start of the text for the block.
168 The variables declared inside the block *precede* the N_LBRAC symbol.
169 On Solaris2, the value is relative to the start of the current function. */
170 __define_stab (N_LBRAC, 0xc0, "LBRAC")
172 /* Place holder for deleted include file. Replaces a N_BINCL and everything
173 up to the corresponding N_EINCL. The Sun linker generates these when
174 it finds multiple identical copies of the symbols from an include file.
175 This appears only in output from the Sun linker. */
176 __define_stab (N_EXCL, 0xc2, "EXCL")
178 /* Modula-2 scope information. Can someone say what info it contains? */
179 __define_stab (N_SCOPE, 0xc4, "SCOPE")
181 /* End of a lexical block. Desc matches the N_LBRAC's desc.
182 The value is the address of the end of the text for the block.
183 On Solaris2, the value is relative to the start of the current function. */
184 __define_stab (N_RBRAC, 0xe0, "RBRAC")
186 /* Begin named common block. Only the name is significant. */
187 __define_stab (N_BCOMM, 0xe2, "BCOMM")
189 /* End named common block. Only the name is significant
190 (and it should match the N_BCOMM). */
191 __define_stab (N_ECOMM, 0xe4, "ECOMM")
193 /* Member of a common block; value is offset within the common block.
194 This should occur within a BCOMM/ECOMM pair. */
195 __define_stab (N_ECOML, 0xe8, "ECOML")
197 /* Solaris2: Pascal "with" statement: type,,0,0,offset */
198 __define_stab (N_WITH, 0xea, "WITH")
200 /* These STAB's are used on Gould systems for Non-Base register symbols
201 or something like that. FIXME. I have assigned the values at random
202 since I don't have a Gould here. Fixups from Gould folk welcome... */
203 __define_stab (N_NBTEXT, 0xF0, "NBTEXT")
204 __define_stab (N_NBDATA, 0xF2, "NBDATA")
205 __define_stab (N_NBBSS, 0xF4, "NBBSS")
206 __define_stab (N_NBSTS, 0xF6, "NBSTS")
207 __define_stab (N_NBLCS, 0xF8, "NBLCS")
209 /* Second symbol entry containing a length-value for the preceding entry.
210 The value is the length. */
211 __define_stab (N_LENG, 0xfe, "LENG")
213 /* The above information, in matrix format.
216 _________________________________________________
217 | 00 - 1F are not dbx stab symbols |
218 | In most cases, the low bit is the EXTernal bit|
220 | 00 UNDEF | 02 ABS | 04 TEXT | 06 DATA |
221 | 01 |EXT | 03 |EXT | 05 |EXT | 07 |EXT |
223 | 08 BSS | 0A INDR | 0C FN_SEQ | 0E WEAKA |
224 | 09 |EXT | 0B | 0D WEAKU | 0F WEAKT |
226 | 10 WEAKD | 12 COMM | 14 SETA | 16 SETT |
227 | 11 WEAKB | 13 | 15 | 17 |
229 | 18 SETD | 1A SETB | 1C SETV | 1E WARNING|
230 | 19 | 1B | 1D | 1F FN |
232 |_______________________________________________|
233 | Debug entries with bit 01 set are unused. |
234 | 20 GSYM | 22 FNAME | 24 FUN | 26 STSYM |
235 | 28 LCSYM | 2A MAIN | 2C ROSYM | 2E |
236 | 30 PC | 32 NSYMS | 34 NOMAP | 36 |
237 | 38 OBJ | 3A | 3C OPT | 3E |
238 | 40 RSYM | 42 M2C | 44 SLINE | 46 DSLINE |
239 | 48 BSLINE*| 4A DEFD | 4C FLINE | 4E |
240 | 50 EHDECL*| 52 | 54 CATCH | 56 |
241 | 58 | 5A | 5C | 5E |
242 | 60 SSYM | 62 ENDM | 64 SO | 66 |
243 | 68 | 6A | 6C | 6E |
244 | 70 | 72 | 74 | 76 |
245 | 78 | 7A | 7C | 7E |
246 | 80 LSYM | 82 BINCL | 84 SOL | 86 |
247 | 88 | 8A | 8C | 8E |
248 | 90 | 92 | 94 | 96 |
249 | 98 | 9A | 9C | 9E |
250 | A0 PSYM | A2 EINCL | A4 ENTRY | A6 |
251 | A8 | AA | AC | AE |
252 | B0 | B2 | B4 | B6 |
253 | B8 | BA | BC | BE |
254 | C0 LBRAC | C2 EXCL | C4 SCOPE | C6 |
255 | C8 | CA | CC | CE |
256 | D0 | D2 | D4 | D6 |
257 | D8 | DA | DC | DE |
258 | E0 RBRAC | E2 BCOMM | E4 ECOMM | E6 |
259 | E8 ECOML | EA WITH | EC | EE |
260 | F0 | F2 | F4 | F6 |
261 | F8 | FA | FC | FE LENG |
262 +-----------------------------------------------+
263 * 50 EHDECL is also MOD2.
264 * 48 BSLINE is also BROWS.