source: trunk/libs/newlib/src/include/aout/stab.def @ 668

Last change on this file since 668 was 444, checked in by satin@…, 6 years ago

add newlib,libalmos-mkh, restructure shared_syscalls.h and mini-libc

File size: 11.2 KB
Line 
1/* Table of DBX symbol codes for the GNU system.
2   Copyright 1988, 1991, 1992, 1993, 1994, 1996, 1998, 2004, 2010
3   Free Software Foundation, Inc.
4
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 3 of the
8   License, or (at your option) any later version.
9
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.
14
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
17   Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
18   MA 02110-1301, USA.  */
19
20/* New stab from Solaris 2.  This uses an n_type of 0, which in a.out files
21   overlaps the N_UNDF used for ordinary symbols.  In ELF files, the
22   debug information is in a different file section, so there is no conflict.
23   This symbol's n_value gives the size of the string section associated
24   with this file.  The symbol's n_strx (relative to the just-updated
25   string section start address) gives the name of the source file,
26   e.g. "foo.c", without any path information.  The symbol's n_desc gives
27   the count of upcoming symbols associated with this file (not including
28   this one).  */
29/* __define_stab (N_UNDF, 0x00, "UNDF")  */
30
31/* Global variable.  Only the name is significant.
32   To find the address, look in the corresponding external symbol.  */
33__define_stab (N_GSYM, 0x20, "GSYM")
34
35/* Function name for BSD Fortran.  Only the name is significant.
36   To find the address, look in the corresponding external symbol.  */
37__define_stab (N_FNAME, 0x22, "FNAME")
38
39/* Function name or text-segment variable for C.  Value is its address.
40   Desc is supposedly starting line number, but GCC doesn't set it
41   and DBX seems not to miss it.  */
42__define_stab (N_FUN, 0x24, "FUN")
43
44/* Data-segment variable with internal linkage.  Value is its address.
45   "Static Sym".  */
46__define_stab (N_STSYM, 0x26, "STSYM")
47
48/* BSS-segment variable with internal linkage.  Value is its address.  */
49__define_stab (N_LCSYM, 0x28, "LCSYM")
50
51/* Name of main routine.  Only the name is significant.  */
52__define_stab (N_MAIN, 0x2a, "MAIN")
53
54/* Solaris2:  Read-only data symbols.  */
55__define_stab (N_ROSYM, 0x2c, "ROSYM")
56
57/* MacOS X:
58   The beginning of a relocatable function block - including stabs.  */
59__define_stab (N_BNSYM, 0x2e, "BNSYM")
60
61/* Global symbol in Pascal.
62   Supposedly the value is its line number; I'm skeptical.  */
63__define_stab (N_PC, 0x30, "PC")
64
65/* Number of symbols:  0, files,,funcs,lines according to Ultrix V4.0. */
66__define_stab (N_NSYMS, 0x32, "NSYMS")
67
68/* "No DST map for sym: name, ,0,type,ignored"  according to Ultrix V4.0. */
69__define_stab (N_NOMAP, 0x34, "NOMAP")
70
71/* New stab from Solaris 2.  Like N_SO, but for the object file.  Two in
72   a row provide the build directory and the relative path of the .o from it.
73   Solaris2 uses this to avoid putting the stabs info into the linked
74   executable; this stab goes into the ".stab.index" section, and the debugger
75   reads the real stabs directly from the .o files instead.  */
76__define_stab (N_OBJ, 0x38, "OBJ")
77
78/* New stab from Solaris 2.  Options for the debugger, related to the
79   source language for this module.  E.g. whether to use ANSI
80   integral promotions or traditional integral promotions.  */
81__define_stab (N_OPT, 0x3c, "OPT")
82
83/* Register variable.  Value is number of register.  */
84__define_stab (N_RSYM, 0x40, "RSYM")
85
86/* Modula-2 compilation unit.  Can someone say what info it contains?  */
87__define_stab (N_M2C, 0x42, "M2C")
88
89/* Line number in text segment.  Desc is the line number;
90   value is corresponding address.  On Solaris2, the line number is
91   relative to the start of the current function.  */
92__define_stab (N_SLINE, 0x44, "SLINE")
93
94/* Similar, for data segment.  */
95__define_stab (N_DSLINE, 0x46, "DSLINE")
96
97/* Similar, for bss segment.  */
98__define_stab (N_BSLINE, 0x48, "BSLINE")
99
100/* Sun's source-code browser stabs.  ?? Don't know what the fields are.
101   Supposedly the field is "path to associated .cb file".  THIS VALUE
102   OVERLAPS WITH N_BSLINE!  */
103__define_stab_duplicate (N_BROWS, 0x48, "BROWS")
104
105/* GNU Modula-2 definition module dependency.  Value is the modification time
106   of the definition file.  Other is non-zero if it is imported with the
107   GNU M2 keyword %INITIALIZE.  Perhaps N_M2C can be used if there
108   are enough empty fields? */
109__define_stab(N_DEFD, 0x4a, "DEFD")
110
111/* New in Solaris2.  Function start/body/end line numbers.  */
112__define_stab(N_FLINE, 0x4C, "FLINE")
113
114/* MacOS X: This tells the end of a relocatable function + debugging info.  */
115__define_stab(N_ENSYM, 0x4E, "ENSYM")
116
117/* THE FOLLOWING TWO STAB VALUES CONFLICT.  Happily, one is for Modula-2
118   and one is for C++.   Still,... */
119/* GNU C++ exception variable.  Name is variable name.  */
120__define_stab (N_EHDECL, 0x50, "EHDECL")
121/* Modula2 info "for imc":  name,,0,0,0  according to Ultrix V4.0.  */
122__define_stab_duplicate (N_MOD2, 0x50, "MOD2")
123
124/* GNU C++ `catch' clause.  Value is its address.  Desc is nonzero if
125   this entry is immediately followed by a CAUGHT stab saying what exception
126   was caught.  Multiple CAUGHT stabs means that multiple exceptions
127   can be caught here.  If Desc is 0, it means all exceptions are caught
128   here.  */
129__define_stab (N_CATCH, 0x54, "CATCH")
130
131/* Structure or union element.  Value is offset in the structure.  */
132__define_stab (N_SSYM, 0x60, "SSYM")
133
134/* Solaris2:  Last stab emitted for module.  */
135__define_stab (N_ENDM, 0x62, "ENDM")
136
137/* Name of main source file.
138   Value is starting text address of the compilation.
139   If multiple N_SO's appear, the first to contain a trailing / is the
140   compilation directory.  The first to not contain a trailing / is the
141   source file name, relative to the compilation directory.  Others (perhaps
142   resulting from cfront) are ignored.
143   On Solaris2, value is undefined, but desc is a source-language code.  */
144
145__define_stab (N_SO, 0x64, "SO")
146
147/* Apple:  This is the stab that associated the .o file with the
148   N_SO stab, in the case where debug info is mostly stored in the .o file.  */
149__define_stab (N_OSO, 0x66, "OSO")
150
151/* SunPro F77:  Name of alias.  */
152__define_stab (N_ALIAS, 0x6c, "ALIAS")
153
154/* Automatic variable in the stack.  Value is offset from frame pointer.
155   Also used for type descriptions.  */
156__define_stab (N_LSYM, 0x80, "LSYM")
157
158/* Beginning of an include file.  Only Sun uses this.
159   In an object file, only the name is significant.
160   The Sun linker puts data into some of the other fields.  */
161__define_stab (N_BINCL, 0x82, "BINCL")
162
163/* Name of sub-source file (#include file).
164   Value is starting text address of the compilation.  */
165__define_stab (N_SOL, 0x84, "SOL")
166
167/* Parameter variable.  Value is offset from argument pointer.
168   (On most machines the argument pointer is the same as the frame pointer.  */
169__define_stab (N_PSYM, 0xa0, "PSYM")
170
171/* End of an include file.  No name.
172   This and N_BINCL act as brackets around the file's output.
173   In an object file, there is no significant data in this entry.
174   The Sun linker puts data into some of the fields.  */
175__define_stab (N_EINCL, 0xa2, "EINCL")
176
177/* Alternate entry point.  Value is its address.  */
178__define_stab (N_ENTRY, 0xa4, "ENTRY")
179
180/* Beginning of lexical block.
181   The desc is the nesting level in lexical blocks.
182   The value is the address of the start of the text for the block.
183   The variables declared inside the block *precede* the N_LBRAC symbol.
184   On Solaris2, the value is relative to the start of the current function.  */
185__define_stab (N_LBRAC, 0xc0, "LBRAC")
186
187/* Place holder for deleted include file.  Replaces a N_BINCL and everything
188   up to the corresponding N_EINCL.  The Sun linker generates these when
189   it finds multiple identical copies of the symbols from an include file.
190   This appears only in output from the Sun linker.  */
191__define_stab (N_EXCL, 0xc2, "EXCL")
192
193/* Modula-2 scope information.  Can someone say what info it contains?  */
194__define_stab (N_SCOPE, 0xc4, "SCOPE")
195
196/* Solaris2: Patch Run Time Checker.  */
197__define_stab (N_PATCH, 0xd0, "PATCH")
198
199/* End of a lexical block.  Desc matches the N_LBRAC's desc.
200   The value is the address of the end of the text for the block.
201   On Solaris2, the value is relative to the start of the current function.  */
202__define_stab (N_RBRAC, 0xe0, "RBRAC")
203
204/* Begin named common block.  Only the name is significant.  */
205__define_stab (N_BCOMM, 0xe2, "BCOMM")
206
207/* End named common block.  Only the name is significant
208   (and it should match the N_BCOMM).  */
209__define_stab (N_ECOMM, 0xe4, "ECOMM")
210
211/* Member of a common block; value is offset within the common block.
212   This should occur within a BCOMM/ECOMM pair.  */
213__define_stab (N_ECOML, 0xe8, "ECOML")
214
215/* Solaris2: Pascal "with" statement: type,,0,0,offset */
216__define_stab (N_WITH, 0xea, "WITH")
217
218/* These STAB's are used on Gould systems for Non-Base register symbols
219   or something like that.  FIXME.  I have assigned the values at random
220   since I don't have a Gould here.  Fixups from Gould folk welcome... */
221__define_stab (N_NBTEXT, 0xF0, "NBTEXT")
222__define_stab (N_NBDATA, 0xF2, "NBDATA")
223__define_stab (N_NBBSS,  0xF4, "NBBSS")
224__define_stab (N_NBSTS,  0xF6, "NBSTS")
225__define_stab (N_NBLCS,  0xF8, "NBLCS")
226
227/* Second symbol entry containing a length-value for the preceding entry.
228   The value is the length.  */
229__define_stab (N_LENG, 0xfe, "LENG")
230
231/* The above information, in matrix format.
232
233                        STAB MATRIX
234        _________________________________________________
235        | 00 - 1F are not dbx stab symbols              |
236        | In most cases, the low bit is the EXTernal bit|
237
238        | 00 UNDEF  | 02 ABS    | 04 TEXT   | 06 DATA   |
239        | 01  |EXT  | 03  |EXT  | 05  |EXT  | 07  |EXT  |
240
241        | 08 BSS    | 0A INDR   | 0C FN_SEQ | 0E WEAKA  |
242        | 09  |EXT  | 0B        | 0D WEAKU  | 0F WEAKT  |
243
244        | 10 WEAKD  | 12 COMM   | 14 SETA   | 16 SETT   |
245        | 11 WEAKB  | 13        | 15        | 17        |
246
247        | 18 SETD   | 1A SETB   | 1C SETV   | 1E WARNING|
248        | 19        | 1B        | 1D        | 1F FN     |
249
250        |_______________________________________________|
251        | Debug entries with bit 01 set are unused.     |
252        | 20 GSYM   | 22 FNAME  | 24 FUN    | 26 STSYM  |
253        | 28 LCSYM  | 2A MAIN   | 2C ROSYM  | 2E        |
254        | 30 PC     | 32 NSYMS  | 34 NOMAP  | 36        |
255        | 38 OBJ    | 3A        | 3C OPT    | 3E        |
256        | 40 RSYM   | 42 M2C    | 44 SLINE  | 46 DSLINE |
257        | 48 BSLINE*| 4A DEFD   | 4C FLINE  | 4E        |
258        | 50 EHDECL*| 52        | 54 CATCH  | 56        |
259        | 58        | 5A        | 5C        | 5E        |
260        | 60 SSYM   | 62 ENDM   | 64 SO     | 66        |
261        | 68        | 6A        | 6C ALIAS  | 6E        |
262        | 70        | 72        | 74        | 76        |
263        | 78        | 7A        | 7C        | 7E        |
264        | 80 LSYM   | 82 BINCL  | 84 SOL    | 86        |
265        | 88        | 8A        | 8C        | 8E        |
266        | 90        | 92        | 94        | 96        |
267        | 98        | 9A        | 9C        | 9E        |
268        | A0 PSYM   | A2 EINCL  | A4 ENTRY  | A6        |
269        | A8        | AA        | AC        | AE        |
270        | B0        | B2        | B4        | B6        |
271        | B8        | BA        | BC        | BE        |
272        | C0 LBRAC  | C2 EXCL   | C4 SCOPE  | C6        |
273        | C8        | CA        | CC        | CE        |
274        | D0 PATCH  | D2        | D4        | D6        |
275        | D8        | DA        | DC        | DE        |
276        | E0 RBRAC  | E2 BCOMM  | E4 ECOMM  | E6        |
277        | E8 ECOML  | EA WITH   | EC        | EE        |
278        | F0        | F2        | F4        | F6        |
279        | F8        | FA        | FC        | FE LENG   |
280        +-----------------------------------------------+
281 * 50 EHDECL is also MOD2.
282 * 48 BSLINE is also BROWS.
283 */
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