1 /* Table of DBX symbol codes for the GNU system.
2 Copyright (C
) 1988-2019 Free Software Foundation
, Inc.
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.
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.
, 51 Franklin Street
- Fifth Floor
, Boston
,
17 MA
02110-1301, 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")
57 The beginning of a relocatable function block
- including stabs.
*/
58 __define_stab (N_BNSYM
, 0x2e, "BNSYM")
60 /* Global symbol in Pascal.
61 Supposedly the value is its line number
; I
'm skeptical. */
62 __define_stab (N_PC, 0x30, "PC")
64 /* Number of symbols: 0, files,,funcs,lines according to Ultrix V4.0. */
65 __define_stab (N_NSYMS, 0x32, "NSYMS")
67 /* "No DST map for sym: name, ,0,type,ignored" according to Ultrix V4.0. */
68 __define_stab (N_NOMAP, 0x34, "NOMAP")
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")
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")
82 /* Register variable. Value is number of register. */
83 __define_stab (N_RSYM, 0x40, "RSYM")
85 /* Modula-2 compilation unit. Can someone say what info it contains? */
86 __define_stab (N_M2C, 0x42, "M2C")
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")
93 /* Similar, for data segment. */
94 __define_stab (N_DSLINE, 0x46, "DSLINE")
96 /* Similar, for bss segment. */
97 __define_stab (N_BSLINE, 0x48, "BSLINE")
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")
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")
110 /* New in Solaris2. Function start/body/end line numbers. */
111 __define_stab(N_FLINE, 0x4C, "FLINE")
113 /* MacOS X: This tells the end of a relocatable function + debugging info. */
114 __define_stab(N_ENSYM, 0x4E, "ENSYM")
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")
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
128 __define_stab (N_CATCH
, 0x54, "CATCH")
130 /* Structure or union element. Value is offset in the structure.
*/
131 __define_stab (N_SSYM
, 0x60, "SSYM")
133 /* Solaris2
: Last stab emitted for module.
*/
134 __define_stab (N_ENDM
, 0x62, "ENDM")
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. */
144 __define_stab (N_SO, 0x64, "SO")
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")
150 /* SunPro F77: Name of alias. */
151 __define_stab (N_ALIAS, 0x6c, "ALIAS")
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")
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")
162 /* Name of sub-source file (#include file).
163 Value is starting text address of the compilation. */
164 __define_stab (N_SOL, 0x84, "SOL")
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")
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")
176 /* Alternate entry point. Value is its address.
*/
177 __define_stab (N_ENTRY
, 0xa4, "ENTRY")
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")
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")
192 /* Modula
-2 scope information. Can someone say what info it contains?
*/
193 __define_stab (N_SCOPE
, 0xc4, "SCOPE")
195 /* Solaris2
: Patch Run Time Checker.
*/
196 __define_stab (N_PATCH
, 0xd0, "PATCH")
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")
203 /* Begin named common block. Only the name is significant. */
204 __define_stab (N_BCOMM, 0xe2, "BCOMM")
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")
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")
214 /* Solaris2: Pascal "with" statement: type,,0,0,offset */
215 __define_stab (N_WITH, 0xea, "WITH")
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")
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")
230 /* The above information, in matrix format.
233 _________________________________________________
234 | 00 - 1F are not dbx stab symbols |
235 | In most cases, the low bit is the EXTernal bit|
237 | 00 UNDEF | 02 ABS | 04 TEXT | 06 DATA |
238 | 01 |EXT | 03 |EXT | 05 |EXT | 07 |EXT |
240 | 08 BSS | 0A INDR | 0C FN_SEQ | 0E WEAKA |
241 | 09 |EXT | 0B | 0D WEAKU | 0F WEAKT |
243 | 10 WEAKD | 12 COMM | 14 SETA | 16 SETT |
244 | 11 WEAKB | 13 | 15 | 17 |
246 | 18 SETD | 1A SETB | 1C SETV | 1E WARNING|
247 | 19 | 1B | 1D | 1F FN |
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.