include/aout/stab.def

   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 \f
  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 \f
 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  */