1/* Table of DBX symbol codes for the GNU system.
2 Copyright (C) 1988, 1997 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
4
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Library 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 The GNU C Library 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 GNU
13 Library General Public License for more details.
14
15 You should have received a copy of the GNU Library General Public
16 License along with the GNU C Library; see the file COPYING.LIB. If not,
17 write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
18 Boston, MA 02111-1307, USA. */
19
20/* This contains contribution from Cygnus Support. */
21
22/* Global variable. Only the name is significant.
23 To find the address, look in the corresponding external symbol. */
24__define_stab (N_GSYM, 0x20, "GSYM")
25
26/* Function name for BSD Fortran. Only the name is significant.
27 To find the address, look in the corresponding external symbol. */
28__define_stab (N_FNAME, 0x22, "FNAME")
29
30/* Function name or text-segment variable for C. Value is its address.
31 Desc is supposedly starting line number, but GCC doesn't set it
32 and DBX seems not to miss it. */
33__define_stab (N_FUN, 0x24, "FUN")
34
35/* Data-segment variable with internal linkage. Value is its address.
36 "Static Sym". */
37__define_stab (N_STSYM, 0x26, "STSYM")
38
39/* BSS-segment variable with internal linkage. Value is its address. */
40__define_stab (N_LCSYM, 0x28, "LCSYM")
41
42/* Name of main routine. Only the name is significant.
43 This is not used in C. */
44__define_stab (N_MAIN, 0x2a, "MAIN")
45
46/* Global symbol in Pascal.
47 Supposedly the value is its line number; I'm skeptical. */
48__define_stab (N_PC, 0x30, "PC")
49
50/* Number of symbols: 0, files,,funcs,lines according to Ultrix V4.0. */
51__define_stab (N_NSYMS, 0x32, "NSYMS")
52
53/* "No DST map for sym: name, ,0,type,ignored" according to Ultrix V4.0. */
54__define_stab (N_NOMAP, 0x34, "NOMAP")
55
56/* New stab from Solaris. I don't know what it means, but it
57 don't seem to contain useful information. */
58__define_stab (N_OBJ, 0x38, "OBJ")
59
60/* New stab from Solaris. I don't know what it means, but it
61 don't seem to contain useful information. Possibly related to the
62 optimization flags used in this module. */
63__define_stab (N_OPT, 0x3c, "OPT")
64
65/* Register variable. Value is number of register. */
66__define_stab (N_RSYM, 0x40, "RSYM")
67
68/* Modula-2 compilation unit. Can someone say what info it contains? */
69__define_stab (N_M2C, 0x42, "M2C")
70
71/* Line number in text segment. Desc is the line number;
72 value is corresponding address. */
73__define_stab (N_SLINE, 0x44, "SLINE")
74
75/* Similar, for data segment. */
76__define_stab (N_DSLINE, 0x46, "DSLINE")
77
78/* Similar, for bss segment. */
79__define_stab (N_BSLINE, 0x48, "BSLINE")
80
81/* Sun's source-code browser stabs. ?? Don't know what the fields are.
82 Supposedly the field is "path to associated .cb file". THIS VALUE
83 OVERLAPS WITH N_BSLINE! */
84__define_stab (N_BROWS, 0x48, "BROWS")
85
86/* GNU Modula-2 definition module dependency. Value is the modification time
87 of the definition file. Other is non-zero if it is imported with the
88 GNU M2 keyword %INITIALIZE. Perhaps N_M2C can be used if there
89 are enough empty fields? */
90__define_stab(N_DEFD, 0x4a, "DEFD")
91
92/* THE FOLLOWING TWO STAB VALUES CONFLICT. Happily, one is for Modula-2
93 and one is for C++. Still,... */
94/* GNU C++ exception variable. Name is variable name. */
95__define_stab (N_EHDECL, 0x50, "EHDECL")
96/* Modula2 info "for imc": name,,0,0,0 according to Ultrix V4.0. */
97__define_stab (N_MOD2, 0x50, "MOD2")
98
99/* GNU C++ `catch' clause. Value is its address. Desc is nonzero if
100 this entry is immediately followed by a CAUGHT stab saying what exception
101 was caught. Multiple CAUGHT stabs means that multiple exceptions
102 can be caught here. If Desc is 0, it means all exceptions are caught
103 here. */
104__define_stab (N_CATCH, 0x54, "CATCH")
105
106/* Structure or union element. Value is offset in the structure. */
107__define_stab (N_SSYM, 0x60, "SSYM")
108
109/* Name of main source file.
110 Value is starting text address of the compilation. */
111__define_stab (N_SO, 0x64, "SO")
112
113/* Automatic variable in the stack. Value is offset from frame pointer.
114 Also used for type descriptions. */
115__define_stab (N_LSYM, 0x80, "LSYM")
116
117/* Beginning of an include file. Only Sun uses this.
118 In an object file, only the name is significant.
119 The Sun linker puts data into some of the other fields. */
120__define_stab (N_BINCL, 0x82, "BINCL")
121
122/* Name of sub-source file (#include file).
123 Value is starting text address of the compilation. */
124__define_stab (N_SOL, 0x84, "SOL")
125
126/* Parameter variable. Value is offset from argument pointer.
127 (On most machines the argument pointer is the same as the frame pointer. */
128__define_stab (N_PSYM, 0xa0, "PSYM")
129
130/* End of an include file. No name.
131 This and N_BINCL act as brackets around the file's output.
132 In an object file, there is no significant data in this entry.
133 The Sun linker puts data into some of the fields. */
134__define_stab (N_EINCL, 0xa2, "EINCL")
135
136/* Alternate entry point. Value is its address. */
137__define_stab (N_ENTRY, 0xa4, "ENTRY")
138
139/* Beginning of lexical block.
140 The desc is the nesting level in lexical blocks.
141 The value is the address of the start of the text for the block.
142 The variables declared inside the block *precede* the N_LBRAC symbol. */
143__define_stab (N_LBRAC, 0xc0, "LBRAC")
144
145/* Place holder for deleted include file. Replaces a N_BINCL and everything
146 up to the corresponding N_EINCL. The Sun linker generates these when
147 it finds multiple identical copies of the symbols from an include file.
148 This appears only in output from the Sun linker. */
149__define_stab (N_EXCL, 0xc2, "EXCL")
150
151/* Modula-2 scope information. Can someone say what info it contains? */
152__define_stab (N_SCOPE, 0xc4, "SCOPE")
153
154/* End of a lexical block. Desc matches the N_LBRAC's desc.
155 The value is the address of the end of the text for the block. */
156__define_stab (N_RBRAC, 0xe0, "RBRAC")
157
158/* Begin named common block. Only the name is significant. */
159__define_stab (N_BCOMM, 0xe2, "BCOMM")
160
161/* End named common block. Only the name is significant
162 (and it should match the N_BCOMM). */
163__define_stab (N_ECOMM, 0xe4, "ECOMM")
164
165/* End common (local name): value is address.
166 I'm not sure how this is used. */
167__define_stab (N_ECOML, 0xe8, "ECOML")
168
169/* These STAB's are used on Gould systems for Non-Base register symbols
170 or something like that. FIXME. I have assigned the values at random
171 since I don't have a Gould here. Fixups from Gould folk welcome... */
172__define_stab (N_NBTEXT, 0xF0, "NBTEXT")
173__define_stab (N_NBDATA, 0xF2, "NBDATA")
174__define_stab (N_NBBSS, 0xF4, "NBBSS")
175__define_stab (N_NBSTS, 0xF6, "NBSTS")
176__define_stab (N_NBLCS, 0xF8, "NBLCS")
177
178/* Second symbol entry containing a length-value for the preceding entry.
179 The value is the length. */
180__define_stab (N_LENG, 0xfe, "LENG")
181
182/* The above information, in matrix format.
183
184 STAB MATRIX
185 _________________________________________________
186 | 00 - 1F are not dbx stab symbols |
187 | In most cases, the low bit is the EXTernal bit|
188
189 | 00 UNDEF | 02 ABS | 04 TEXT | 06 DATA |
190 | 01 |EXT | 03 |EXT | 05 |EXT | 07 |EXT |
191
192 | 08 BSS | 0A INDR | 0C FN_SEQ | 0E |
193 | 09 |EXT | 0B | 0D | 0F |
194
195 | 10 | 12 COMM | 14 SETA | 16 SETT |
196 | 11 | 13 | 15 | 17 |
197
198 | 18 SETD | 1A SETB | 1C SETV | 1E WARNING|
199 | 19 | 1B | 1D | 1F FN |
200
201 |_______________________________________________|
202 | Debug entries with bit 01 set are unused. |
203 | 20 GSYM | 22 FNAME | 24 FUN | 26 STSYM |
204 | 28 LCSYM | 2A MAIN | 2C | 2E |
205 | 30 PC | 32 NSYMS | 34 NOMAP | 36 |
206 | 38 OBJ | 3A | 3C OPT | 3E |
207 | 40 RSYM | 42 M2C | 44 SLINE | 46 DSLINE |
208 | 48 BSLINE*| 4A DEFD | 4C | 4E |
209 | 50 EHDECL*| 52 | 54 CATCH | 56 |
210 | 58 | 5A | 5C | 5E |
211 | 60 SSYM | 62 | 64 SO | 66 |
212 | 68 | 6A | 6C | 6E |
213 | 70 | 72 | 74 | 76 |
214 | 78 | 7A | 7C | 7E |
215 | 80 LSYM | 82 BINCL | 84 SOL | 86 |
216 | 88 | 8A | 8C | 8E |
217 | 90 | 92 | 94 | 96 |
218 | 98 | 9A | 9C | 9E |
219 | A0 PSYM | A2 EINCL | A4 ENTRY | A6 |
220 | A8 | AA | AC | AE |
221 | B0 | B2 | B4 | B6 |
222 | B8 | BA | BC | BE |
223 | C0 LBRAC | C2 EXCL | C4 SCOPE | C6 |
224 | C8 | CA | CC | CE |
225 | D0 | D2 | D4 | D6 |
226 | D8 | DA | DC | DE |
227 | E0 RBRAC | E2 BCOMM | E4 ECOMM | E6 |
228 | E8 ECOML | EA | EC | EE |
229 | F0 | F2 | F4 | F6 |
230 | F8 | FA | FC | FE LENG |
231 +-----------------------------------------------+
232 * 50 EHDECL is also MOD2.
233 * 48 BSLINE is also BROWS.
234 */
235