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[deliverable/binutils-gdb.git] / include / aout / stab.def
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252b5132 1/* Table of DBX symbol codes for the GNU system.
4f03e98c 2 Copyright 1988, 1991, 1992, 1993, 1994, 1996, 1998, 2004
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3 Free Software Foundation, Inc.
4
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5 This program is free software; you can redistribute it and/or
6 modify it under the terms of the GNU 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.
252b5132 9
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10 This program 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
13 GNU General Public License for more details.
252b5132 14
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15 You should have received a copy of the GNU General Public License
16 along with this program; if not, write to the Free Software
e172dbf8 17 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */
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18\f
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
27 this one). */
28/* __define_stab (N_UNDF, 0x00, "UNDF") */
29
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")
33
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")
37
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")
42
43/* Data-segment variable with internal linkage. Value is its address.
44 "Static Sym". */
45__define_stab (N_STSYM, 0x26, "STSYM")
46
47/* BSS-segment variable with internal linkage. Value is its address. */
48__define_stab (N_LCSYM, 0x28, "LCSYM")
49
50/* Name of main routine. Only the name is significant. */
51__define_stab (N_MAIN, 0x2a, "MAIN")
52
53/* Solaris2: Read-only data symbols. */
54__define_stab (N_ROSYM, 0x2c, "ROSYM")
55
56/* Global symbol in Pascal.
57 Supposedly the value is its line number; I'm skeptical. */
58__define_stab (N_PC, 0x30, "PC")
59
60/* Number of symbols: 0, files,,funcs,lines according to Ultrix V4.0. */
61__define_stab (N_NSYMS, 0x32, "NSYMS")
62
63/* "No DST map for sym: name, ,0,type,ignored" according to Ultrix V4.0. */
64__define_stab (N_NOMAP, 0x34, "NOMAP")
65
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")
72
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")
77
78/* Register variable. Value is number of register. */
79__define_stab (N_RSYM, 0x40, "RSYM")
80
81/* Modula-2 compilation unit. Can someone say what info it contains? */
82__define_stab (N_M2C, 0x42, "M2C")
83
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")
88
89/* Similar, for data segment. */
90__define_stab (N_DSLINE, 0x46, "DSLINE")
91
92/* Similar, for bss segment. */
93__define_stab (N_BSLINE, 0x48, "BSLINE")
94
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")
99
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")
105
106/* New in Solaris2. Function start/body/end line numbers. */
107__define_stab(N_FLINE, 0x4C, "FLINE")
108
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")
115
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
120 here. */
121__define_stab (N_CATCH, 0x54, "CATCH")
122
123/* Structure or union element. Value is offset in the structure. */
124__define_stab (N_SSYM, 0x60, "SSYM")
125
126/* Solaris2: Last stab emitted for module. */
127__define_stab (N_ENDM, 0x62, "ENDM")
128
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. */
136
137__define_stab (N_SO, 0x64, "SO")
138
139/* SunPro F77: Name of alias. */
140__define_stab (N_ALIAS, 0x6c, "ALIAS")
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
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184/* Solaris2: Patch Run Time Checker. */
185__define_stab (N_PATCH, 0xd0, "PATCH")
186
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187/* End of a lexical block. Desc matches the N_LBRAC's desc.
188 The value is the address of the end of the text for the block.
189 On Solaris2, the value is relative to the start of the current function. */
190__define_stab (N_RBRAC, 0xe0, "RBRAC")
191
192/* Begin named common block. Only the name is significant. */
193__define_stab (N_BCOMM, 0xe2, "BCOMM")
194
195/* End named common block. Only the name is significant
196 (and it should match the N_BCOMM). */
197__define_stab (N_ECOMM, 0xe4, "ECOMM")
198
199/* Member of a common block; value is offset within the common block.
200 This should occur within a BCOMM/ECOMM pair. */
201__define_stab (N_ECOML, 0xe8, "ECOML")
202
203/* Solaris2: Pascal "with" statement: type,,0,0,offset */
204__define_stab (N_WITH, 0xea, "WITH")
205
206/* These STAB's are used on Gould systems for Non-Base register symbols
207 or something like that. FIXME. I have assigned the values at random
208 since I don't have a Gould here. Fixups from Gould folk welcome... */
209__define_stab (N_NBTEXT, 0xF0, "NBTEXT")
210__define_stab (N_NBDATA, 0xF2, "NBDATA")
211__define_stab (N_NBBSS, 0xF4, "NBBSS")
212__define_stab (N_NBSTS, 0xF6, "NBSTS")
213__define_stab (N_NBLCS, 0xF8, "NBLCS")
214
215/* Second symbol entry containing a length-value for the preceding entry.
216 The value is the length. */
217__define_stab (N_LENG, 0xfe, "LENG")
218\f
219/* The above information, in matrix format.
220
221 STAB MATRIX
222 _________________________________________________
223 | 00 - 1F are not dbx stab symbols |
224 | In most cases, the low bit is the EXTernal bit|
225
226 | 00 UNDEF | 02 ABS | 04 TEXT | 06 DATA |
227 | 01 |EXT | 03 |EXT | 05 |EXT | 07 |EXT |
228
229 | 08 BSS | 0A INDR | 0C FN_SEQ | 0E WEAKA |
230 | 09 |EXT | 0B | 0D WEAKU | 0F WEAKT |
231
232 | 10 WEAKD | 12 COMM | 14 SETA | 16 SETT |
233 | 11 WEAKB | 13 | 15 | 17 |
234
235 | 18 SETD | 1A SETB | 1C SETV | 1E WARNING|
236 | 19 | 1B | 1D | 1F FN |
237
238 |_______________________________________________|
239 | Debug entries with bit 01 set are unused. |
240 | 20 GSYM | 22 FNAME | 24 FUN | 26 STSYM |
241 | 28 LCSYM | 2A MAIN | 2C ROSYM | 2E |
242 | 30 PC | 32 NSYMS | 34 NOMAP | 36 |
243 | 38 OBJ | 3A | 3C OPT | 3E |
244 | 40 RSYM | 42 M2C | 44 SLINE | 46 DSLINE |
245 | 48 BSLINE*| 4A DEFD | 4C FLINE | 4E |
246 | 50 EHDECL*| 52 | 54 CATCH | 56 |
247 | 58 | 5A | 5C | 5E |
248 | 60 SSYM | 62 ENDM | 64 SO | 66 |
249 | 68 | 6A | 6C ALIAS | 6E |
250 | 70 | 72 | 74 | 76 |
251 | 78 | 7A | 7C | 7E |
252 | 80 LSYM | 82 BINCL | 84 SOL | 86 |
253 | 88 | 8A | 8C | 8E |
254 | 90 | 92 | 94 | 96 |
255 | 98 | 9A | 9C | 9E |
256 | A0 PSYM | A2 EINCL | A4 ENTRY | A6 |
257 | A8 | AA | AC | AE |
258 | B0 | B2 | B4 | B6 |
259 | B8 | BA | BC | BE |
260 | C0 LBRAC | C2 EXCL | C4 SCOPE | C6 |
261 | C8 | CA | CC | CE |
4f03e98c 262 | D0 PATCH | D2 | D4 | D6 |
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263 | D8 | DA | DC | DE |
264 | E0 RBRAC | E2 BCOMM | E4 ECOMM | E6 |
265 | E8 ECOML | EA WITH | EC | EE |
266 | F0 | F2 | F4 | F6 |
267 | F8 | FA | FC | FE LENG |
268 +-----------------------------------------------+
269 * 50 EHDECL is also MOD2.
270 * 48 BSLINE is also BROWS.
271 */
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