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1 /* Table of DBX symbol codes for the GNU system.
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2 Copyright (C) 1988, 1997, 1998, 2004, 2007 Free Software Foundation, Inc.
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3 This file is part of the GNU C Library.
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4
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5 The GNU C Library is free software; you can redistribute it and/or
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6 modify it under the terms of the GNU Library General Public License as
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7 published by the Free Software Foundation; either version 3 of the
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8 License, or (at your option) any later version.
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9
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10 The GNU C Library 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 GNU
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13 Library 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 Library General Public
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16 License along with the GNU C Library; see the file COPYING3. If
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17 not see <http://www.gnu.org/licenses/>. */
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18
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19 /* This contains contribution from Cygnus Support. */
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20
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21 /* Global variable. Only the name is significant.
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22 To find the address, look in the corresponding external symbol. */
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23 __define_stab (N_GSYM, 0x20, "GSYM")
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24
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25 /* Function name for BSD Fortran. Only the name is significant.
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26 To find the address, look in the corresponding external symbol. */
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27 __define_stab (N_FNAME, 0x22, "FNAME")
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28
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29 /* Function name or text-segment variable for C. Value is its address.
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30 Desc is supposedly starting line number, but GCC doesn't set it
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31 and DBX seems not to miss it. */
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32 __define_stab (N_FUN, 0x24, "FUN")
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33
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34 /* Data-segment variable with internal linkage. Value is its address.
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35 "Static Sym". */
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36 __define_stab (N_STSYM, 0x26, "STSYM")
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37
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38 /* BSS-segment variable with internal linkage. Value is its address. */
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39 __define_stab (N_LCSYM, 0x28, "LCSYM")
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40
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41 /* Begin function marker. */
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42 __define_stab (N_BNSYM, 0x2e, "BNSYM")
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43
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44 /* End function marker. */
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45 __define_stab (N_ENSYM, 0x4e, "ENSYM")
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46
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47 /* Name of main routine. Only the name is significant.
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48 This is not used in C. */
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49 __define_stab (N_MAIN, 0x2a, "MAIN")
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50
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51 /* Global symbol in Pascal.
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52 Supposedly the value is its line number; I'm skeptical. */
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53 __define_stab (N_PC, 0x30, "PC")
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54
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55 /* Number of symbols: 0, files,,funcs,lines according to Ultrix V4.0. */
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56 __define_stab (N_NSYMS, 0x32, "NSYMS")
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57
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58 /* "No DST map for sym: name, ,0,type,ignored" according to Ultrix V4.0. */
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59 __define_stab (N_NOMAP, 0x34, "NOMAP")
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60
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61 /* New stab from Solaris. I don't know what it means, but it
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62 don't seem to contain useful information. */
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63 __define_stab (N_OBJ, 0x38, "OBJ")
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64
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65 /* New stab from Solaris. I don't know what it means, but it
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66 don't seem to contain useful information. Possibly related to the
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67 optimization flags used in this module. */
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68 __define_stab (N_OPT, 0x3c, "OPT")
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69
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70 /* Register variable. Value is number of register. */
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71 __define_stab (N_RSYM, 0x40, "RSYM")
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72
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73 /* Modula-2 compilation unit. Can someone say what info it contains? */
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74 __define_stab (N_M2C, 0x42, "M2C")
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75
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76 /* Line number in text segment. Desc is the line number;
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77 value is corresponding address. */
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78 __define_stab (N_SLINE, 0x44, "SLINE")
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79
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80 /* Similar, for data segment. */
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81 __define_stab (N_DSLINE, 0x46, "DSLINE")
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82
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83 /* Similar, for bss segment. */
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84 __define_stab (N_BSLINE, 0x48, "BSLINE")
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85
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86 /* Sun's source-code browser stabs. ?? Don't know what the fields are.
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87 Supposedly the field is "path to associated .cb file". THIS VALUE
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88 OVERLAPS WITH N_BSLINE! */
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89 __define_stab (N_BROWS, 0x48, "BROWS")
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90
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91 /* GNU Modula-2 definition module dependency. Value is the modification time
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92 of the definition file. Other is nonzero if it is imported with the
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93 GNU M2 keyword %INITIALIZE. Perhaps N_M2C can be used if there
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94 are enough empty fields? */
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95 __define_stab(N_DEFD, 0x4a, "DEFD")
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96
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97 /* THE FOLLOWING TWO STAB VALUES CONFLICT. Happily, one is for Modula-2
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98 and one is for C++. Still,... */
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99 /* GNU C++ exception variable. Name is variable name. */
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100 __define_stab (N_EHDECL, 0x50, "EHDECL")
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101 /* Modula2 info "for imc": name,,0,0,0 according to Ultrix V4.0. */
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102 __define_stab (N_MOD2, 0x50, "MOD2")
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103
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104 /* GNU C++ `catch' clause. Value is its address. Desc is nonzero if
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105 this entry is immediately followed by a CAUGHT stab saying what exception
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106 was caught. Multiple CAUGHT stabs means that multiple exceptions
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107 can be caught here. If Desc is 0, it means all exceptions are caught
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108 here. */
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109 __define_stab (N_CATCH, 0x54, "CATCH")
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110
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111 /* Structure or union element. Value is offset in the structure. */
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112 __define_stab (N_SSYM, 0x60, "SSYM")
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113
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114 /* Name of main source file.
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115 Value is starting text address of the compilation. */
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116 __define_stab (N_SO, 0x64, "SO")
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117
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118 /* Automatic variable in the stack. Value is offset from frame pointer.
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119 Also used for type descriptions. */
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120 __define_stab (N_LSYM, 0x80, "LSYM")
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121
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122 /* Beginning of an include file. Only Sun uses this.
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123 In an object file, only the name is significant.
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124 The Sun linker puts data into some of the other fields. */
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125 __define_stab (N_BINCL, 0x82, "BINCL")
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126
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127 /* Name of sub-source file (#include file).
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128 Value is starting text address of the compilation. */
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129 __define_stab (N_SOL, 0x84, "SOL")
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130
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131 /* Parameter variable. Value is offset from argument pointer.
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132 (On most machines the argument pointer is the same as the frame pointer. */
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133 __define_stab (N_PSYM, 0xa0, "PSYM")
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134
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135 /* End of an include file. No name.
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136 This and N_BINCL act as brackets around the file's output.
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137 In an object file, there is no significant data in this entry.
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138 The Sun linker puts data into some of the fields. */
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139 __define_stab (N_EINCL, 0xa2, "EINCL")
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140
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141 /* Alternate entry point. Value is its address. */
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142 __define_stab (N_ENTRY, 0xa4, "ENTRY")
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143
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144 /* Beginning of lexical block.
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145 The desc is the nesting level in lexical blocks.
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146 The value is the address of the start of the text for the block.
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147 The variables declared inside the block *precede* the N_LBRAC symbol. */
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148 __define_stab (N_LBRAC, 0xc0, "LBRAC")
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149
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150 /* Place holder for deleted include file. Replaces a N_BINCL and everything
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151 up to the corresponding N_EINCL. The Sun linker generates these when
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152 it finds multiple identical copies of the symbols from an include file.
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153 This appears only in output from the Sun linker. */
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154 __define_stab (N_EXCL, 0xc2, "EXCL")
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155
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156 /* Modula-2 scope information. Can someone say what info it contains? */
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157 __define_stab (N_SCOPE, 0xc4, "SCOPE")
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158
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159 /* End of a lexical block. Desc matches the N_LBRAC's desc.
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160 The value is the address of the end of the text for the block. */
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161 __define_stab (N_RBRAC, 0xe0, "RBRAC")
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162
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163 /* Begin named common block. Only the name is significant. */
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164 __define_stab (N_BCOMM, 0xe2, "BCOMM")
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165
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166 /* End named common block. Only the name is significant
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167 (and it should match the N_BCOMM). */
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168 __define_stab (N_ECOMM, 0xe4, "ECOMM")
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169
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170 /* End common (local name): value is address.
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171 I'm not sure how this is used. */
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172 __define_stab (N_ECOML, 0xe8, "ECOML")
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173
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174 /* These STAB's are used on Gould systems for Non-Base register symbols
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175 or something like that. FIXME. I have assigned the values at random
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176 since I don't have a Gould here. Fixups from Gould folk welcome... */
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177 __define_stab (N_NBTEXT, 0xF0, "NBTEXT")
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178 __define_stab (N_NBDATA, 0xF2, "NBDATA")
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179 __define_stab (N_NBBSS, 0xF4, "NBBSS")
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180 __define_stab (N_NBSTS, 0xF6, "NBSTS")
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181 __define_stab (N_NBLCS, 0xF8, "NBLCS")
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182
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183 /* Second symbol entry containing a length-value for the preceding entry.
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184 The value is the length. */
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185 __define_stab (N_LENG, 0xfe, "LENG")
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186
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187 /* The above information, in matrix format.
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188
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189 STAB MATRIX
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190 _________________________________________________
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191 | 00 - 1F are not dbx stab symbols |
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192 | In most cases, the low bit is the EXTernal bit|
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193
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194 | 00 UNDEF | 02 ABS | 04 TEXT | 06 DATA |
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195 | 01 |EXT | 03 |EXT | 05 |EXT | 07 |EXT |
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196
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197 | 08 BSS | 0A INDR | 0C FN_SEQ | 0E |
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198 | 09 |EXT | 0B | 0D | 0F |
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199
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200 | 10 | 12 COMM | 14 SETA | 16 SETT |
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201 | 11 | 13 | 15 | 17 |
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202
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203 | 18 SETD | 1A SETB | 1C SETV | 1E WARNING|
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204 | 19 | 1B | 1D | 1F FN |
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205
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206 |_______________________________________________|
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207 | Debug entries with bit 01 set are unused. |
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208 | 20 GSYM | 22 FNAME | 24 FUN | 26 STSYM |
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209 | 28 LCSYM | 2A MAIN | 2C | 2E BNSYM |
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210 | 30 PC | 32 NSYMS | 34 NOMAP | 36 |
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211 | 38 OBJ | 3A | 3C OPT | 3E |
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212 | 40 RSYM | 42 M2C | 44 SLINE | 46 DSLINE |
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213 | 48 BSLINE*| 4A DEFD | 4C | 4E ENSYM |
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214 | 50 EHDECL*| 52 | 54 CATCH | 56 |
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215 | 58 | 5A | 5C | 5E |
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216 | 60 SSYM | 62 | 64 SO | 66 |
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217 | 68 | 6A | 6C | 6E |
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218 | 70 | 72 | 74 | 76 |
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219 | 78 | 7A | 7C | 7E |
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220 | 80 LSYM | 82 BINCL | 84 SOL | 86 |
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221 | 88 | 8A | 8C | 8E |
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222 | 90 | 92 | 94 | 96 |
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223 | 98 | 9A | 9C | 9E |
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224 | A0 PSYM | A2 EINCL | A4 ENTRY | A6 |
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225 | A8 | AA | AC | AE |
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226 | B0 | B2 | B4 | B6 |
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227 | B8 | BA | BC | BE |
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228 | C0 LBRAC | C2 EXCL | C4 SCOPE | C6 |
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229 | C8 | CA | CC | CE |
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230 | D0 | D2 | D4 | D6 |
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231 | D8 | DA | DC | DE |
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232 | E0 RBRAC | E2 BCOMM | E4 ECOMM | E6 |
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233 | E8 ECOML | EA | EC | EE |
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234 | F0 | F2 | F4 | F6 |
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235 | F8 | FA | FC | FE LENG |
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236 +-----------------------------------------------+
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237 * 50 EHDECL is also MOD2.
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238 * 48 BSLINE is also BROWS.
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239 */
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