1/* Table of DBX symbol codes for the GNU system.
2   Copyright (C) 1988-2016 Free Software Foundation, Inc.
3
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.
8
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.
13
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.  */
18
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/* MacOS X:
57   The beginning of a relocatable function block - including stabs.  */
58__define_stab (N_BNSYM, 0x2e, "BNSYM")
59
60/* Global symbol in Pascal.
61   Supposedly the value is its line number; I'm skeptical.  */
62__define_stab (N_PC, 0x30, "PC")
63
64/* Number of symbols:  0, files,,funcs,lines according to Ultrix V4.0. */
65__define_stab (N_NSYMS, 0x32, "NSYMS")
66
67/* "No DST map for sym: name, ,0,type,ignored"  according to Ultrix V4.0. */
68__define_stab (N_NOMAP, 0x34, "NOMAP")
69
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")
76
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")
81
82/* Register variable.  Value is number of register.  */
83__define_stab (N_RSYM, 0x40, "RSYM")
84
85/* Modula-2 compilation unit.  Can someone say what info it contains?  */
86__define_stab (N_M2C, 0x42, "M2C")
87
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")
92
93/* Similar, for data segment.  */
94__define_stab (N_DSLINE, 0x46, "DSLINE")
95
96/* Similar, for bss segment.  */
97__define_stab (N_BSLINE, 0x48, "BSLINE")
98
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")
103
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")
109
110/* New in Solaris2.  Function start/body/end line numbers.  */
111__define_stab(N_FLINE, 0x4C, "FLINE")
112
113/* MacOS X: This tells the end of a relocatable function + debugging info.  */
114__define_stab(N_ENSYM, 0x4E, "ENSYM")
115
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")
122
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
127   here.  */
128__define_stab (N_CATCH, 0x54, "CATCH")
129
130/* Structure or union element.  Value is offset in the structure.  */
131__define_stab (N_SSYM, 0x60, "SSYM")
132
133/* Solaris2:  Last stab emitted for module.  */
134__define_stab (N_ENDM, 0x62, "ENDM")
135
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.  */
143
144__define_stab (N_SO, 0x64, "SO")
145
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")
149
150/* SunPro F77:  Name of alias.  */
151__define_stab (N_ALIAS, 0x6c, "ALIAS")
152
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")
156
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")
161
162/* Name of sub-source file (#include file).
163   Value is starting text address of the compilation.  */
164__define_stab (N_SOL, 0x84, "SOL")
165
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")
169
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")
175
176/* Alternate entry point.  Value is its address.  */
177__define_stab (N_ENTRY, 0xa4, "ENTRY")
178
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")
185
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")
191
192/* Modula-2 scope information.  Can someone say what info it contains?  */
193__define_stab (N_SCOPE, 0xc4, "SCOPE")
194
195/* Solaris2: Patch Run Time Checker.  */
196__define_stab (N_PATCH, 0xd0, "PATCH")
197
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")
202
203/* Begin named common block.  Only the name is significant.  */
204__define_stab (N_BCOMM, 0xe2, "BCOMM")
205
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")
209
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")
213
214/* Solaris2: Pascal "with" statement: type,,0,0,offset */
215__define_stab (N_WITH, 0xea, "WITH")
216
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")
225
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")
229
230/* The above information, in matrix format.
231
232			STAB MATRIX
233	_________________________________________________
234	| 00 - 1F are not dbx stab symbols		|
235	| In most cases, the low bit is the EXTernal bit|
236
237	| 00 UNDEF  | 02 ABS	| 04 TEXT   | 06 DATA	|
238	| 01  |EXT  | 03  |EXT	| 05  |EXT  | 07  |EXT	|
239
240	| 08 BSS    | 0A INDR	| 0C FN_SEQ | 0E WEAKA	|
241	| 09  |EXT  | 0B 	| 0D WEAKU  | 0F WEAKT	|
242
243	| 10 WEAKD  | 12 COMM	| 14 SETA   | 16 SETT	|
244	| 11 WEAKB  | 13	| 15 	    | 17	|
245
246	| 18 SETD   | 1A SETB	| 1C SETV   | 1E WARNING|
247	| 19	    | 1B	| 1D 	    | 1F FN	|
248
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.
282 */
283