| 1 | /* Table of DBX symbol codes for the GNU system.
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| 2 | Copyright 1988, 1991, 1992, 1993, 1994, 1996, 1998
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| 3 | Free Software Foundation, Inc.
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| 4 |
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| 5 | This program is free software; you can redistribute it and/or modify
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| 6 | it under the terms of the GNU General Public License as published by
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| 7 | the Free Software Foundation; either version 2 of the License, or
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| 8 | (at your option) any later version.
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| 9 |
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| 10 | This program is distributed in the hope that it will be useful,
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| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 13 | GNU General Public License for more details.
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| 14 |
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| 15 | You should have received a copy of the GNU General Public License
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| 16 | along with this program; if not, write to the Free Software
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| 17 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
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| 18 | |
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| 19 |
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| 20 | /* New stab from Solaris 2. This uses an n_type of 0, which in a.out files
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| 21 | overlaps the N_UNDF used for ordinary symbols. In ELF files, the
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| 22 | debug information is in a different file section, so there is no conflict.
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| 23 | This symbol's n_value gives the size of the string section associated
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| 24 | with this file. The symbol's n_strx (relative to the just-updated
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| 25 | string section start address) gives the name of the source file,
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| 26 | e.g. "foo.c", without any path information. The symbol's n_desc gives
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| 27 | the count of upcoming symbols associated with this file (not including
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| 28 | this one). */
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| 29 | /* __define_stab (N_UNDF, 0x00, "UNDF") */
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| 30 |
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| 31 | /* Global variable. Only the name is significant.
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| 32 | To find the address, look in the corresponding external symbol. */
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| 33 | __define_stab (N_GSYM, 0x20, "GSYM")
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| 34 |
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| 35 | /* Function name for BSD Fortran. Only the name is significant.
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| 36 | To find the address, look in the corresponding external symbol. */
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| 37 | __define_stab (N_FNAME, 0x22, "FNAME")
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| 38 |
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| 39 | /* Function name or text-segment variable for C. Value is its address.
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| 40 | Desc is supposedly starting line number, but GCC doesn't set it
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| 41 | and DBX seems not to miss it. */
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| 42 | __define_stab (N_FUN, 0x24, "FUN")
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| 43 |
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| 44 | /* Data-segment variable with internal linkage. Value is its address.
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| 45 | "Static Sym". */
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| 46 | __define_stab (N_STSYM, 0x26, "STSYM")
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| 47 |
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| 48 | /* BSS-segment variable with internal linkage. Value is its address. */
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| 49 | __define_stab (N_LCSYM, 0x28, "LCSYM")
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| 50 |
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| 51 | /* Name of main routine. Only the name is significant. */
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| 52 | __define_stab (N_MAIN, 0x2a, "MAIN")
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| 53 |
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| 54 | /* Solaris2: Read-only data symbols. */
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| 55 | __define_stab (N_ROSYM, 0x2c, "ROSYM")
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| 56 |
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| 57 | /* Global symbol in Pascal.
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| 58 | Supposedly the value is its line number; I'm skeptical. */
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| 59 | __define_stab (N_PC, 0x30, "PC")
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| 60 |
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| 61 | /* Number of symbols: 0, files,,funcs,lines according to Ultrix V4.0. */
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| 62 | __define_stab (N_NSYMS, 0x32, "NSYMS")
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| 63 |
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| 64 | /* "No DST map for sym: name, ,0,type,ignored" according to Ultrix V4.0. */
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| 65 | __define_stab (N_NOMAP, 0x34, "NOMAP")
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| 66 |
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| 67 | /* New stab from Solaris 2. Like N_SO, but for the object file. Two in
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| 68 | a row provide the build directory and the relative path of the .o from it.
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| 69 | Solaris2 uses this to avoid putting the stabs info into the linked
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| 70 | executable; this stab goes into the ".stab.index" section, and the debugger
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| 71 | reads the real stabs directly from the .o files instead. */
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| 72 | __define_stab (N_OBJ, 0x38, "OBJ")
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| 73 |
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| 74 | /* New stab from Solaris 2. Options for the debugger, related to the
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| 75 | source language for this module. E.g. whether to use ANSI
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| 76 | integral promotions or traditional integral promotions. */
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| 77 | __define_stab (N_OPT, 0x3c, "OPT")
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| 78 |
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| 79 | /* Register variable. Value is number of register. */
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| 80 | __define_stab (N_RSYM, 0x40, "RSYM")
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| 81 |
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| 82 | /* Modula-2 compilation unit. Can someone say what info it contains? */
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| 83 | __define_stab (N_M2C, 0x42, "M2C")
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| 84 |
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| 85 | /* Line number in text segment. Desc is the line number;
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| 86 | value is corresponding address. On Solaris2, the line number is
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| 87 | relative to the start of the current function. */
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| 88 | __define_stab (N_SLINE, 0x44, "SLINE")
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| 89 |
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| 90 | /* Similar, for data segment. */
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| 91 | __define_stab (N_DSLINE, 0x46, "DSLINE")
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| 92 |
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| 93 | /* Similar, for bss segment. */
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| 94 | __define_stab (N_BSLINE, 0x48, "BSLINE")
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| 95 |
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| 96 | /* Sun's source-code browser stabs. ?? Don't know what the fields are.
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| 97 | Supposedly the field is "path to associated .cb file". THIS VALUE
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| 98 | OVERLAPS WITH N_BSLINE! */
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| 99 | __define_stab_duplicate (N_BROWS, 0x48, "BROWS")
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| 100 |
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| 101 | /* GNU Modula-2 definition module dependency. Value is the modification time
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| 102 | of the definition file. Other is non-zero if it is imported with the
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| 103 | GNU M2 keyword %INITIALIZE. Perhaps N_M2C can be used if there
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| 104 | are enough empty fields? */
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| 105 | __define_stab(N_DEFD, 0x4a, "DEFD")
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| 106 |
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| 107 | /* New in Solaris2. Function start/body/end line numbers. */
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| 108 | __define_stab(N_FLINE, 0x4C, "FLINE")
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| 109 |
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| 110 | /* THE FOLLOWING TWO STAB VALUES CONFLICT. Happily, one is for Modula-2
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| 111 | and one is for C++. Still,... */
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| 112 | /* GNU C++ exception variable. Name is variable name. */
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| 113 | __define_stab (N_EHDECL, 0x50, "EHDECL")
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| 114 | /* Modula2 info "for imc": name,,0,0,0 according to Ultrix V4.0. */
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| 115 | __define_stab_duplicate (N_MOD2, 0x50, "MOD2")
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| 116 |
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| 117 | /* GNU C++ `catch' clause. Value is its address. Desc is nonzero if
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| 118 | this entry is immediately followed by a CAUGHT stab saying what exception
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| 119 | was caught. Multiple CAUGHT stabs means that multiple exceptions
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| 120 | can be caught here. If Desc is 0, it means all exceptions are caught
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| 121 | here. */
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| 122 | __define_stab (N_CATCH, 0x54, "CATCH")
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| 123 |
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| 124 | /* Structure or union element. Value is offset in the structure. */
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| 125 | __define_stab (N_SSYM, 0x60, "SSYM")
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| 126 |
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| 127 | /* Solaris2: Last stab emitted for module. */
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| 128 | __define_stab (N_ENDM, 0x62, "ENDM")
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| 129 |
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| 130 | /* Name of main source file.
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| 131 | Value is starting text address of the compilation.
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| 132 | If multiple N_SO's appear, the first to contain a trailing / is the
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| 133 | compilation directory. The first to not contain a trailing / is the
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| 134 | source file name, relative to the compilation directory. Others (perhaps
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| 135 | resulting from cfront) are ignored.
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| 136 | On Solaris2, value is undefined, but desc is a source-language code. */
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| 137 |
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| 138 | __define_stab (N_SO, 0x64, "SO")
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| 139 |
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| 140 | /* SunPro F77: Name of alias. */
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| 141 | __define_stab (N_ALIAS, 0x6c, "ALIAS")
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| 142 |
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| 143 | /* Automatic variable in the stack. Value is offset from frame pointer.
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| 144 | Also used for type descriptions. */
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| 145 | __define_stab (N_LSYM, 0x80, "LSYM")
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| 146 |
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| 147 | /* Beginning of an include file. Only Sun uses this.
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| 148 | In an object file, only the name is significant.
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| 149 | The Sun linker puts data into some of the other fields. */
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| 150 | __define_stab (N_BINCL, 0x82, "BINCL")
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| 151 |
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| 152 | /* Name of sub-source file (#include file).
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| 153 | Value is starting text address of the compilation. */
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| 154 | __define_stab (N_SOL, 0x84, "SOL")
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| 155 |
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| 156 | /* Parameter variable. Value is offset from argument pointer.
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| 157 | (On most machines the argument pointer is the same as the frame pointer. */
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| 158 | __define_stab (N_PSYM, 0xa0, "PSYM")
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| 159 |
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| 160 | /* End of an include file. No name.
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| 161 | This and N_BINCL act as brackets around the file's output.
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| 162 | In an object file, there is no significant data in this entry.
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| 163 | The Sun linker puts data into some of the fields. */
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| 164 | __define_stab (N_EINCL, 0xa2, "EINCL")
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| 165 |
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| 166 | /* Alternate entry point. Value is its address. */
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| 167 | __define_stab (N_ENTRY, 0xa4, "ENTRY")
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| 168 |
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| 169 | /* Beginning of lexical block.
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| 170 | The desc is the nesting level in lexical blocks.
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| 171 | The value is the address of the start of the text for the block.
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| 172 | The variables declared inside the block *precede* the N_LBRAC symbol.
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| 173 | On Solaris2, the value is relative to the start of the current function. */
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| 174 | __define_stab (N_LBRAC, 0xc0, "LBRAC")
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| 175 |
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| 176 | /* Place holder for deleted include file. Replaces a N_BINCL and everything
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| 177 | up to the corresponding N_EINCL. The Sun linker generates these when
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| 178 | it finds multiple identical copies of the symbols from an include file.
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| 179 | This appears only in output from the Sun linker. */
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| 180 | __define_stab (N_EXCL, 0xc2, "EXCL")
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| 181 |
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| 182 | /* Modula-2 scope information. Can someone say what info it contains? */
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| 183 | __define_stab (N_SCOPE, 0xc4, "SCOPE")
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| 184 |
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| 185 | /* End of a lexical block. Desc matches the N_LBRAC's desc.
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| 186 | The value is the address of the end of the text for the block.
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| 187 | On Solaris2, the value is relative to the start of the current function. */
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| 188 | __define_stab (N_RBRAC, 0xe0, "RBRAC")
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| 189 |
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| 190 | /* Begin named common block. Only the name is significant. */
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| 191 | __define_stab (N_BCOMM, 0xe2, "BCOMM")
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| 192 |
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| 193 | /* End named common block. Only the name is significant
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| 194 | (and it should match the N_BCOMM). */
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| 195 | __define_stab (N_ECOMM, 0xe4, "ECOMM")
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| 196 |
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| 197 | /* Member of a common block; value is offset within the common block.
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| 198 | This should occur within a BCOMM/ECOMM pair. */
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| 199 | __define_stab (N_ECOML, 0xe8, "ECOML")
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| 200 |
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| 201 | /* Solaris2: Pascal "with" statement: type,,0,0,offset */
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| 202 | __define_stab (N_WITH, 0xea, "WITH")
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| 203 |
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| 204 | /* These STAB's are used on Gould systems for Non-Base register symbols
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| 205 | or something like that. FIXME. I have assigned the values at random
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| 206 | since I don't have a Gould here. Fixups from Gould folk welcome... */
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| 207 | __define_stab (N_NBTEXT, 0xF0, "NBTEXT")
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| 208 | __define_stab (N_NBDATA, 0xF2, "NBDATA")
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| 209 | __define_stab (N_NBBSS, 0xF4, "NBBSS")
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| 210 | __define_stab (N_NBSTS, 0xF6, "NBSTS")
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| 211 | __define_stab (N_NBLCS, 0xF8, "NBLCS")
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| 212 |
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| 213 | /* Second symbol entry containing a length-value for the preceding entry.
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| 214 | The value is the length. */
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| 215 | __define_stab (N_LENG, 0xfe, "LENG")
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| 216 | |
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| 217 |
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| 218 | /* The above information, in matrix format.
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| 219 |
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| 220 | STAB MATRIX
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| 221 | _________________________________________________
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| 222 | | 00 - 1F are not dbx stab symbols |
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| 223 | | In most cases, the low bit is the EXTernal bit|
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| 224 |
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| 225 | | 00 UNDEF | 02 ABS | 04 TEXT | 06 DATA |
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| 226 | | 01 |EXT | 03 |EXT | 05 |EXT | 07 |EXT |
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| 227 |
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| 228 | | 08 BSS | 0A INDR | 0C FN_SEQ | 0E WEAKA |
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| 229 | | 09 |EXT | 0B | 0D WEAKU | 0F WEAKT |
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| 230 |
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| 231 | | 10 WEAKD | 12 COMM | 14 SETA | 16 SETT |
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| 232 | | 11 WEAKB | 13 | 15 | 17 |
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| 233 |
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| 234 | | 18 SETD | 1A SETB | 1C SETV | 1E WARNING|
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| 235 | | 19 | 1B | 1D | 1F FN |
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| 236 |
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| 237 | |_______________________________________________|
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| 238 | | Debug entries with bit 01 set are unused. |
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| 239 | | 20 GSYM | 22 FNAME | 24 FUN | 26 STSYM |
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| 240 | | 28 LCSYM | 2A MAIN | 2C ROSYM | 2E |
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| 241 | | 30 PC | 32 NSYMS | 34 NOMAP | 36 |
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| 242 | | 38 OBJ | 3A | 3C OPT | 3E |
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| 243 | | 40 RSYM | 42 M2C | 44 SLINE | 46 DSLINE |
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| 244 | | 48 BSLINE*| 4A DEFD | 4C FLINE | 4E |
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| 245 | | 50 EHDECL*| 52 | 54 CATCH | 56 |
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| 246 | | 58 | 5A | 5C | 5E |
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| 247 | | 60 SSYM | 62 ENDM | 64 SO | 66 |
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| 248 | | 68 | 6A | 6C ALIAS | 6E |
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| 249 | | 70 | 72 | 74 | 76 |
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| 250 | | 78 | 7A | 7C | 7E |
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| 251 | | 80 LSYM | 82 BINCL | 84 SOL | 86 |
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| 252 | | 88 | 8A | 8C | 8E |
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| 253 | | 90 | 92 | 94 | 96 |
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| 254 | | 98 | 9A | 9C | 9E |
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| 255 | | A0 PSYM | A2 EINCL | A4 ENTRY | A6 |
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| 256 | | A8 | AA | AC | AE |
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| 257 | | B0 | B2 | B4 | B6 |
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| 258 | | B8 | BA | BC | BE |
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| 259 | | C0 LBRAC | C2 EXCL | C4 SCOPE | C6 |
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| 260 | | C8 | CA | CC | CE |
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| 261 | | D0 | D2 | D4 | D6 |
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| 262 | | D8 | DA | DC | DE |
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| 263 | | E0 RBRAC | E2 BCOMM | E4 ECOMM | E6 |
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| 264 | | E8 ECOML | EA WITH | EC | EE |
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| 265 | | F0 | F2 | F4 | F6 |
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| 266 | | F8 | FA | FC | FE LENG |
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| 267 | +-----------------------------------------------+
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| 268 | * 50 EHDECL is also MOD2.
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| 269 | * 48 BSLINE is also BROWS.
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| 270 | */
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