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5191 | serge | 1 | /* Definitions and structures for reading debug symbols from the |
2 | native HP C compiler. |
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3 | |||
4 | Written by the Center for Software Science at the University of Utah |
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5 | and by Cygnus Support. |
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6 | |||
7 | Copyright 1994, 1995, 1998, 1999, 2003 Free Software Foundation, Inc. |
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8 | |||
9 | This program is free software; you can redistribute it and/or modify |
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10 | it under the terms of the GNU General Public License as published by |
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11 | the Free Software Foundation; either version 3 of the License, or |
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12 | (at your option) any later version. |
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13 | |||
14 | This program is distributed in the hope that it will be useful, |
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15 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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17 | GNU General Public License for more details. |
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18 | |||
19 | You should have received a copy of the GNU General Public License |
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20 | along with this program; if not, write to the Free Software |
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21 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, |
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22 | MA 02110-1301, USA. */ |
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23 | |||
24 | #ifndef HP_SYMTAB_INCLUDED |
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25 | #define HP_SYMTAB_INCLUDED |
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26 | |||
27 | /* General information: |
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28 | |||
29 | This header file defines and describes only the data structures |
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30 | necessary to read debug symbols produced by the HP C compiler, |
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31 | HP ANSI C++ compiler, and HP FORTRAN 90 compiler using the |
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32 | SOM object file format. |
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33 | (For a full description of the debug format, ftp hpux-symtab.h from |
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34 | jaguar.cs.utah.edu:/dist). |
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35 | |||
36 | Additional notes (Rich Title) |
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37 | This file is a reverse-engineered version of a file called |
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38 | "symtab.h" which exists internal to HP's Computer Languages Organization |
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39 | in /CLO/Components/DDE/obj/som/symtab.h. Because HP's version of |
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40 | the file is copyrighted and not distributed, it is necessary for |
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41 | GDB to use the reverse-engineered version that follows. |
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42 | Work was done by Cygnus to reverse-engineer the C subset of symtab.h. |
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43 | The WDB project has extended this to also contain the C++ |
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44 | symbol definitions, the F90 symbol definitions, |
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45 | and the DOC (debugging-optimized-code) symbol definitions. |
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46 | In some cases (the C++ symbol definitions) |
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47 | I have added internal documentation here that |
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48 | goes beyond what is supplied in HP's symtab.h. If we someday |
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49 | unify these files again, the extra comments should be merged back |
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50 | into HP's symtab.h. |
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51 | |||
52 | ------------------------------------------------------------------- |
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53 | |||
54 | Debug symbols are contained entirely within an unloadable space called |
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55 | $DEBUG$. $DEBUG$ contains several subspaces which group related |
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56 | debug symbols. |
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57 | |||
58 | $GNTT$ contains information for global variables, types and contants. |
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59 | |||
60 | $LNTT$ contains information for procedures (including nesting), scoping |
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61 | information, local variables, types, and constants. |
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62 | |||
63 | $SLT$ contains source line information so that code addresses may be |
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64 | mapped to source lines. |
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65 | |||
66 | $VT$ contains various strings and constants for named objects (variables, |
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67 | typedefs, functions, etc). Strings are stored as null-terminated character |
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68 | lists. Constants always begin on word boundaries. The first byte of |
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69 | the VT must be zero (a null string). |
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70 | |||
71 | $XT$ is not currently used by GDB. |
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72 | |||
73 | Many structures within the subspaces point to other structures within |
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74 | the same subspace, or to structures within a different subspace. These |
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75 | pointers are represented as a structure index from the beginning of |
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76 | the appropriate subspace. */ |
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77 | |||
78 | /* Used to describe where a constant is stored. */ |
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79 | enum location_type |
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80 | { |
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81 | LOCATION_IMMEDIATE, |
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82 | LOCATION_PTR, |
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83 | LOCATION_VT, |
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84 | }; |
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85 | |||
86 | /* Languages supported by this debug format. Within the data structures |
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87 | this type is limited to 4 bits for a maximum of 16 languages. */ |
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88 | enum hp_language |
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89 | { |
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90 | HP_LANGUAGE_UNKNOWN, |
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91 | HP_LANGUAGE_C, |
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92 | HP_LANGUAGE_FORTRAN, |
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93 | HP_LANGUAGE_F77 = HP_LANGUAGE_FORTRAN, |
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94 | HP_LANGUAGE_PASCAL, |
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95 | HP_LANGUAGE_MODCAL, |
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96 | HP_LANGUAGE_COBOL, |
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97 | HP_LANGUAGE_BASIC, |
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98 | HP_LANGUAGE_ADA, |
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99 | HP_LANGUAGE_CPLUSPLUS, |
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100 | HP_LANGUAGE_DMPASCAL |
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101 | }; |
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102 | |||
103 | |||
104 | /* Basic data types available in this debug format. Within the data |
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105 | structures this type is limited to 5 bits for a maximum of 32 basic |
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106 | data types. */ |
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107 | enum hp_type |
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108 | { |
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109 | HP_TYPE_UNDEFINED, /* 0 */ |
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110 | HP_TYPE_BOOLEAN, /* 1 */ |
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111 | HP_TYPE_CHAR, /* 2 */ |
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112 | HP_TYPE_INT, /* 3 */ |
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113 | HP_TYPE_UNSIGNED_INT, /* 4 */ |
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114 | HP_TYPE_REAL, /* 5 */ |
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115 | HP_TYPE_COMPLEX, /* 6 */ |
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116 | HP_TYPE_STRING200, /* 7 */ |
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117 | HP_TYPE_LONGSTRING200, /* 8 */ |
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118 | HP_TYPE_TEXT, /* 9 */ |
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119 | HP_TYPE_FLABEL, /* 10 */ |
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120 | HP_TYPE_FTN_STRING_SPEC, /* 11 */ |
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121 | HP_TYPE_MOD_STRING_SPEC, /* 12 */ |
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122 | HP_TYPE_PACKED_DECIMAL, /* 13 */ |
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123 | HP_TYPE_REAL_3000, /* 14 */ |
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124 | HP_TYPE_MOD_STRING_3000, /* 15 */ |
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125 | HP_TYPE_ANYPOINTER, /* 16 */ |
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126 | HP_TYPE_GLOBAL_ANYPOINTER, /* 17 */ |
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127 | HP_TYPE_LOCAL_ANYPOINTER, /* 18 */ |
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128 | HP_TYPE_COMPLEXS3000, /* 19 */ |
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129 | HP_TYPE_FTN_STRING_S300_COMPAT, /* 20 */ |
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130 | HP_TYPE_FTN_STRING_VAX_COMPAT, /* 21 */ |
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131 | HP_TYPE_BOOLEAN_S300_COMPAT, /* 22 */ |
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132 | HP_TYPE_BOOLEAN_VAX_COMPAT, /* 23 */ |
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133 | HP_TYPE_WIDE_CHAR, /* 24 */ |
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134 | HP_TYPE_LONG, /* 25 */ |
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135 | HP_TYPE_UNSIGNED_LONG, /* 26 */ |
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136 | HP_TYPE_DOUBLE, /* 27 */ |
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137 | HP_TYPE_TEMPLATE_ARG, /* 28 */ |
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138 | HP_TYPE_VOID /* 29 */ |
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139 | }; |
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140 | |||
141 | /* An immediate name and type table entry. |
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142 | |||
143 | extension and immediate will always be one. |
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144 | global will always be zero. |
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145 | hp_type is the basic type this entry describes. |
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146 | bitlength is the length in bits for the basic type. */ |
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147 | struct dnttp_immediate |
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148 | { |
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149 | unsigned int extension: 1; |
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150 | unsigned int immediate: 1; |
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151 | unsigned int global: 1; |
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152 | unsigned int type: 5; |
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153 | unsigned int bitlength: 24; |
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154 | }; |
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155 | |||
156 | /* A nonimmediate name and type table entry. |
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157 | |||
158 | extension will always be one. |
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159 | immediate will always be zero. |
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160 | if global is zero, this entry points into the LNTT |
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161 | if global is one, this entry points into the GNTT |
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162 | index is the index within the GNTT or LNTT for this entry. */ |
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163 | struct dnttp_nonimmediate |
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164 | { |
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165 | unsigned int extension: 1; |
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166 | unsigned int immediate: 1; |
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167 | unsigned int global: 1; |
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168 | unsigned int index: 29; |
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169 | }; |
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170 | |||
171 | /* A pointer to an entry in the GNTT and LNTT tables. It has two |
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172 | forms depending on the type being described. |
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173 | |||
174 | The immediate form is used for simple entries and is one |
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175 | word. |
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176 | |||
177 | The nonimmediate form is used for complex entries and contains |
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178 | an index into the LNTT or GNTT which describes the entire type. |
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179 | |||
180 | If a dnttpointer is -1, then it is a NIL entry. */ |
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181 | |||
182 | #define DNTTNIL (-1) |
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183 | typedef union dnttpointer |
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184 | { |
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185 | struct dnttp_immediate dntti; |
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186 | struct dnttp_nonimmediate dnttp; |
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187 | int word; |
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188 | } dnttpointer; |
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189 | |||
190 | /* An index into the source line table. As with dnttpointers, a sltpointer |
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191 | of -1 indicates a NIL entry. */ |
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192 | #define SLTNIL (-1) |
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193 | typedef int sltpointer; |
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194 | |||
195 | /* Index into DOC (= "Debugging Optimized Code") line table. */ |
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196 | #define LTNIL (-1) |
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197 | typedef int ltpointer; |
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198 | |||
199 | /* Index into context table. */ |
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200 | #define CTXTNIL (-1) |
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201 | typedef int ctxtpointer; |
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202 | |||
203 | /* Unsigned byte offset into the VT. */ |
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204 | typedef unsigned int vtpointer; |
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205 | |||
206 | /* A DNTT entry (used within the GNTT and LNTT). |
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207 | |||
208 | DNTT entries are variable sized objects, but are always a multiple |
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209 | of 3 words (we call each group of 3 words a "block"). |
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210 | |||
211 | The first bit in each block is an extension bit. This bit is zero |
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212 | for the first block of a DNTT entry. If the entry requires more |
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213 | than one block, then this bit is set to one in all blocks after |
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214 | the first one. */ |
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215 | |||
216 | /* Each DNTT entry describes a particular debug symbol (beginning of |
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217 | a source file, a function, variables, structures, etc. |
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218 | |||
219 | The type of the DNTT entry is stored in the "kind" field within the |
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220 | DNTT entry itself. */ |
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221 | |||
222 | enum dntt_entry_type |
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223 | { |
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224 | DNTT_TYPE_NIL = -1, |
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225 | DNTT_TYPE_SRCFILE, |
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226 | DNTT_TYPE_MODULE, |
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227 | DNTT_TYPE_FUNCTION, |
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228 | DNTT_TYPE_ENTRY, |
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229 | DNTT_TYPE_BEGIN, |
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230 | DNTT_TYPE_END, |
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231 | DNTT_TYPE_IMPORT, |
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232 | DNTT_TYPE_LABEL, |
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233 | DNTT_TYPE_FPARAM, |
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234 | DNTT_TYPE_SVAR, |
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235 | DNTT_TYPE_DVAR, |
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236 | DNTT_TYPE_HOLE1, |
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237 | DNTT_TYPE_CONST, |
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238 | DNTT_TYPE_TYPEDEF, |
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239 | DNTT_TYPE_TAGDEF, |
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240 | DNTT_TYPE_POINTER, |
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241 | DNTT_TYPE_ENUM, |
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242 | DNTT_TYPE_MEMENUM, |
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243 | DNTT_TYPE_SET, |
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244 | DNTT_TYPE_SUBRANGE, |
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245 | DNTT_TYPE_ARRAY, |
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246 | DNTT_TYPE_STRUCT, |
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247 | DNTT_TYPE_UNION, |
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248 | DNTT_TYPE_FIELD, |
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249 | DNTT_TYPE_VARIANT, |
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250 | DNTT_TYPE_FILE, |
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251 | DNTT_TYPE_FUNCTYPE, |
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252 | DNTT_TYPE_WITH, |
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253 | DNTT_TYPE_COMMON, |
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254 | DNTT_TYPE_COBSTRUCT, |
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255 | DNTT_TYPE_XREF, |
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256 | DNTT_TYPE_SA, |
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257 | DNTT_TYPE_MACRO, |
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258 | DNTT_TYPE_BLOCKDATA, |
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259 | DNTT_TYPE_CLASS_SCOPE, |
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260 | DNTT_TYPE_REFERENCE, |
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261 | DNTT_TYPE_PTRMEM, |
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262 | DNTT_TYPE_PTRMEMFUNC, |
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263 | DNTT_TYPE_CLASS, |
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264 | DNTT_TYPE_GENFIELD, |
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265 | DNTT_TYPE_VFUNC, |
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266 | DNTT_TYPE_MEMACCESS, |
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267 | DNTT_TYPE_INHERITANCE, |
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268 | DNTT_TYPE_FRIEND_CLASS, |
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269 | DNTT_TYPE_FRIEND_FUNC, |
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270 | DNTT_TYPE_MODIFIER, |
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271 | DNTT_TYPE_OBJECT_ID, |
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272 | DNTT_TYPE_MEMFUNC, |
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273 | DNTT_TYPE_TEMPLATE, |
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274 | DNTT_TYPE_TEMPLATE_ARG, |
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275 | DNTT_TYPE_FUNC_TEMPLATE, |
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276 | DNTT_TYPE_LINK, |
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277 | DNTT_TYPE_DYN_ARRAY_DESC, |
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278 | DNTT_TYPE_DESC_SUBRANGE, |
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279 | DNTT_TYPE_BEGIN_EXT, |
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280 | DNTT_TYPE_INLN, |
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281 | DNTT_TYPE_INLN_LIST, |
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282 | DNTT_TYPE_ALIAS, |
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283 | DNTT_TYPE_DOC_FUNCTION, |
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284 | DNTT_TYPE_DOC_MEMFUNC, |
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285 | DNTT_TYPE_MAX |
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286 | }; |
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287 | |||
288 | /* DNTT_TYPE_SRCFILE: |
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289 | |||
290 | One DNTT_TYPE_SRCFILE symbol is output for the start of each source |
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291 | file and at the begin and end of an included file. A DNTT_TYPE_SRCFILE |
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292 | entry is also output before each DNTT_TYPE_FUNC symbol so that debuggers |
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293 | can determine what file a function was defined in. |
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294 | |||
295 | LANGUAGE describes the source file's language. |
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296 | |||
297 | NAME points to an VT entry providing the source file's name. |
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298 | |||
299 | Note the name used for DNTT_TYPE_SRCFILE entries are exactly as seen |
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300 | by the compiler (ie they may be relative or absolute). C include files |
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301 | via <> inclusion must use absolute paths. |
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302 | |||
303 | ADDRESS points to an SLT entry from which line number and code locations |
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304 | may be determined. */ |
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305 | |||
306 | struct dntt_type_srcfile |
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307 | { |
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308 | unsigned int extension: 1; |
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309 | unsigned int kind: 10; /* DNTT_TYPE_SRCFILE */ |
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310 | unsigned int language: 4; |
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311 | unsigned int unused: 17; |
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312 | vtpointer name; |
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313 | sltpointer address; |
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314 | }; |
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315 | |||
316 | /* DNTT_TYPE_MODULE: |
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317 | |||
318 | A DNTT_TYPE_MODULE symbol is emitted for the start of a pascal |
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319 | module or C source file. A module indicates a compilation unit |
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320 | for name-scoping purposes; in that regard there should be |
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321 | a 1-1 correspondence between GDB "symtab"'s and MODULE symbol records. |
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322 | |||
323 | Each DNTT_TYPE_MODULE must have an associated DNTT_TYPE_END symbol. |
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324 | |||
325 | NAME points to a VT entry providing the module's name. Note C |
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326 | source files are considered nameless modules. |
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327 | |||
328 | ALIAS point to a VT entry providing a secondary name. |
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329 | |||
330 | ADDRESS points to an SLT entry from which line number and code locations |
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331 | may be determined. */ |
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332 | |||
333 | struct dntt_type_module |
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334 | { |
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335 | unsigned int extension: 1; |
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336 | unsigned int kind: 10; /* DNTT_TYPE_MODULE */ |
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337 | unsigned int unused: 21; |
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338 | vtpointer name; |
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339 | vtpointer alias; |
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340 | dnttpointer unused2; |
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341 | sltpointer address; |
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342 | }; |
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343 | |||
344 | /* DNTT_TYPE_FUNCTION, |
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345 | DNTT_TYPE_ENTRY, |
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346 | DNTT_TYPE_BLOCKDATA, |
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347 | DNTT_TYPE_MEMFUNC: |
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348 | |||
349 | A DNTT_TYPE_FUNCTION symbol is emitted for each function definition; |
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350 | a DNTT_TYPE_ENTRY symbols is used for secondary entry points. Both |
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351 | symbols used the dntt_type_function structure. |
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352 | A DNTT_TYPE_BLOCKDATA symbol is emitted ...? |
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353 | A DNTT_TYPE_MEMFUNC symbol is emitted for inlined member functions (C++). |
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354 | |||
355 | Each of DNTT_TYPE_FUNCTION must have a matching DNTT_TYPE_END. |
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356 | |||
357 | GLOBAL is nonzero if the function has global scope. |
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358 | |||
359 | LANGUAGE describes the function's source language. |
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360 | |||
361 | OPT_LEVEL describes the optimization level the function was compiled |
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362 | with. |
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363 | |||
364 | VARARGS is nonzero if the function uses varargs. |
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365 | |||
366 | NAME points to a VT entry providing the function's name. |
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367 | |||
368 | ALIAS points to a VT entry providing a secondary name for the function. |
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369 | |||
370 | FIRSTPARAM points to a LNTT entry which describes the parameter list. |
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371 | |||
372 | ADDRESS points to an SLT entry from which line number and code locations |
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373 | may be determined. |
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374 | |||
375 | ENTRYADDR is the memory address corresponding the function's entry point |
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376 | |||
377 | RETVAL points to a LNTT entry describing the function's return value. |
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378 | |||
379 | LOWADDR is the lowest memory address associated with this function. |
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380 | |||
381 | HIADDR is the highest memory address associated with this function. */ |
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382 | |||
383 | struct dntt_type_function |
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384 | { |
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385 | unsigned int extension: 1; |
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386 | unsigned int kind: 10; /* DNTT_TYPE_FUNCTION, |
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387 | DNTT_TYPE_ENTRY, |
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388 | DNTT_TYPE_BLOCKDATA |
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389 | or DNTT_TYPE_MEMFUNC */ |
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390 | unsigned int global: 1; |
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391 | unsigned int language: 4; |
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392 | unsigned int nest_level: 5; |
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393 | unsigned int opt_level: 2; |
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394 | unsigned int varargs: 1; |
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395 | unsigned int lang_info: 4; |
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396 | unsigned int inlined: 1; |
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397 | unsigned int localalloc: 1; |
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398 | unsigned int expansion: 1; |
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399 | unsigned int unused: 1; |
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400 | vtpointer name; |
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401 | vtpointer alias; |
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402 | dnttpointer firstparam; |
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403 | sltpointer address; |
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404 | CORE_ADDR entryaddr; |
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405 | dnttpointer retval; |
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406 | CORE_ADDR lowaddr; |
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407 | CORE_ADDR hiaddr; |
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408 | }; |
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409 | |||
410 | /* DNTT_TYPE_BEGIN: |
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411 | |||
412 | A DNTT_TYPE_BEGIN symbol is emitted to begin a new nested scope. |
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413 | Every DNTT_TYPE_BEGIN symbol must have a matching DNTT_TYPE_END symbol. |
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414 | |||
415 | CLASSFLAG is nonzero if this is the beginning of a c++ class definition. |
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416 | |||
417 | ADDRESS points to an SLT entry from which line number and code locations |
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418 | may be determined. */ |
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419 | |||
420 | struct dntt_type_begin |
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421 | { |
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422 | unsigned int extension: 1; |
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423 | unsigned int kind: 10; |
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424 | unsigned int classflag: 1; |
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425 | unsigned int unused: 20; |
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426 | sltpointer address; |
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427 | }; |
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428 | |||
429 | /* DNTT_TYPE_END: |
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430 | |||
431 | A DNTT_TYPE_END symbol is emitted when closing a scope started by |
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432 | a DNTT_TYPE_MODULE, DNTT_TYPE_FUNCTION, DNTT_TYPE_WITH, |
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433 | DNTT_TYPE_COMMON, DNTT_TYPE_BEGIN, and DNTT_TYPE_CLASS_SCOPE symbols. |
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434 | |||
435 | ENDKIND describes what type of scope the DNTT_TYPE_END is closing |
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436 | (one of the above 6 kinds). |
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437 | |||
438 | CLASSFLAG is nonzero if this is the end of a c++ class definition. |
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439 | |||
440 | ADDRESS points to an SLT entry from which line number and code locations |
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441 | may be determined. |
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442 | |||
443 | BEGINSCOPE points to the LNTT entry which opened the scope. */ |
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444 | |||
445 | struct dntt_type_end |
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446 | { |
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447 | unsigned int extension: 1; |
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448 | unsigned int kind: 10; |
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449 | unsigned int endkind: 10; |
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450 | unsigned int classflag: 1; |
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451 | unsigned int unused: 10; |
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452 | sltpointer address; |
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453 | dnttpointer beginscope; |
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454 | }; |
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455 | |||
456 | /* DNTT_TYPE_IMPORT is unused by GDB. */ |
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457 | /* DNTT_TYPE_LABEL is unused by GDB. */ |
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458 | |||
459 | /* DNTT_TYPE_FPARAM: |
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460 | |||
461 | A DNTT_TYPE_FPARAM symbol is emitted for a function argument. When |
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462 | chained together the symbols represent an argument list for a function. |
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463 | |||
464 | REGPARAM is nonzero if this parameter was passed in a register. |
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465 | |||
466 | INDIRECT is nonzero if this parameter is a pointer to the parameter |
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467 | (pass by reference or pass by value for large items). |
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468 | |||
469 | LONGADDR is nonzero if the parameter is a 64bit pointer. |
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470 | |||
471 | NAME is a pointer into the VT for the parameter's name. |
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472 | |||
473 | LOCATION describes where the parameter is stored. Depending on the |
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474 | parameter type LOCATION could be a register number, or an offset |
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475 | from the stack pointer. |
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476 | |||
477 | TYPE points to a NTT entry describing the type of this parameter. |
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478 | |||
479 | NEXTPARAM points to the LNTT entry describing the next parameter. */ |
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480 | |||
481 | struct dntt_type_fparam |
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482 | { |
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483 | unsigned int extension: 1; |
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484 | unsigned int kind: 10; |
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485 | unsigned int regparam: 1; |
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486 | unsigned int indirect: 1; |
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487 | unsigned int longaddr: 1; |
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488 | unsigned int copyparam: 1; |
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489 | unsigned int dflt: 1; |
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490 | unsigned int doc_ranges: 1; |
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491 | unsigned int misc_kind: 1; |
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492 | unsigned int unused: 14; |
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493 | vtpointer name; |
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494 | CORE_ADDR location; |
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495 | dnttpointer type; |
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496 | dnttpointer nextparam; |
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497 | int misc; |
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498 | }; |
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499 | |||
500 | /* DNTT_TYPE_SVAR: |
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501 | |||
502 | A DNTT_TYPE_SVAR is emitted to describe a variable in static storage. |
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503 | |||
504 | GLOBAL is nonzero if the variable has global scope. |
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505 | |||
506 | INDIRECT is nonzero if the variable is a pointer to an object. |
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507 | |||
508 | LONGADDR is nonzero if the variable is in long pointer space. |
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509 | |||
510 | STATICMEM is nonzero if the variable is a member of a class. |
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511 | |||
512 | A_UNION is nonzero if the variable is an anonymous union member. |
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513 | |||
514 | NAME is a pointer into the VT for the variable's name. |
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515 | |||
516 | LOCATION provides the memory address for the variable. |
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517 | |||
518 | TYPE is a pointer into either the GNTT or LNTT which describes |
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519 | the type of this variable. */ |
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520 | |||
521 | struct dntt_type_svar |
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522 | { |
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523 | unsigned int extension: 1; |
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524 | unsigned int kind: 10; |
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525 | unsigned int global: 1; |
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526 | unsigned int indirect: 1; |
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527 | unsigned int longaddr: 1; |
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528 | unsigned int staticmem: 1; |
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529 | unsigned int a_union: 1; |
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530 | unsigned int unused1: 1; |
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531 | unsigned int thread_specific: 1; |
||
532 | unsigned int unused2: 14; |
||
533 | vtpointer name; |
||
534 | CORE_ADDR location; |
||
535 | dnttpointer type; |
||
536 | unsigned int offset; |
||
537 | unsigned int displacement; |
||
538 | }; |
||
539 | |||
540 | /* DNTT_TYPE_DVAR: |
||
541 | |||
542 | A DNTT_TYPE_DVAR is emitted to describe automatic variables and variables |
||
543 | held in registers. |
||
544 | |||
545 | GLOBAL is nonzero if the variable has global scope. |
||
546 | |||
547 | INDIRECT is nonzero if the variable is a pointer to an object. |
||
548 | |||
549 | REGVAR is nonzero if the variable is in a register. |
||
550 | |||
551 | A_UNION is nonzero if the variable is an anonymous union member. |
||
552 | |||
553 | NAME is a pointer into the VT for the variable's name. |
||
554 | |||
555 | LOCATION provides the memory address or register number for the variable. |
||
556 | |||
557 | TYPE is a pointer into either the GNTT or LNTT which describes |
||
558 | the type of this variable. */ |
||
559 | |||
560 | struct dntt_type_dvar |
||
561 | { |
||
562 | unsigned int extension: 1; |
||
563 | unsigned int kind: 10; |
||
564 | unsigned int global: 1; |
||
565 | unsigned int indirect: 1; |
||
566 | unsigned int regvar: 1; |
||
567 | unsigned int a_union: 1; |
||
568 | unsigned int unused: 17; |
||
569 | vtpointer name; |
||
570 | int location; |
||
571 | dnttpointer type; |
||
572 | unsigned int offset; |
||
573 | }; |
||
574 | |||
575 | /* DNTT_TYPE_CONST: |
||
576 | |||
577 | A DNTT_TYPE_CONST symbol is emitted for program constants. |
||
578 | |||
579 | GLOBAL is nonzero if the constant has global scope. |
||
580 | |||
581 | INDIRECT is nonzero if the constant is a pointer to an object. |
||
582 | |||
583 | LOCATION_TYPE describes where to find the constant's value |
||
584 | (in the VT, memory, or embedded in an instruction). |
||
585 | |||
586 | CLASSMEM is nonzero if the constant is a member of a class. |
||
587 | |||
588 | NAME is a pointer into the VT for the constant's name. |
||
589 | |||
590 | LOCATION provides the memory address, register number or pointer |
||
591 | into the VT for the constant's value. |
||
592 | |||
593 | TYPE is a pointer into either the GNTT or LNTT which describes |
||
594 | the type of this variable. */ |
||
595 | |||
596 | struct dntt_type_const |
||
597 | { |
||
598 | unsigned int extension: 1; |
||
599 | unsigned int kind: 10; |
||
600 | unsigned int global: 1; |
||
601 | unsigned int indirect: 1; |
||
602 | unsigned int location_type: 3; |
||
603 | unsigned int classmem: 1; |
||
604 | unsigned int unused: 15; |
||
605 | vtpointer name; |
||
606 | CORE_ADDR location; |
||
607 | dnttpointer type; |
||
608 | unsigned int offset; |
||
609 | unsigned int displacement; |
||
610 | }; |
||
611 | |||
612 | /* DNTT_TYPE_TYPEDEF and DNTT_TYPE_TAGDEF: |
||
613 | |||
614 | The same structure is used to describe typedefs and tagdefs. |
||
615 | |||
616 | DNTT_TYPE_TYPEDEFS are associated with C "typedefs". |
||
617 | |||
618 | DNTT_TYPE_TAGDEFs are associated with C "struct", "union", and "enum" |
||
619 | tags, which may have the same name as a typedef in the same scope. |
||
620 | Also they are associated with C++ "class" tags, which implicitly have |
||
621 | the same name as the class type. |
||
622 | |||
623 | GLOBAL is nonzero if the typedef/tagdef has global scope. |
||
624 | |||
625 | TYPEINFO is used to determine if full type information is available |
||
626 | for a tag. (usually 1, but can be zero for opaque types in C). |
||
627 | |||
628 | NAME is a pointer into the VT for the constant's name. |
||
629 | |||
630 | TYPE points to the underlying type for the typedef/tagdef in the |
||
631 | GNTT or LNTT. */ |
||
632 | |||
633 | struct dntt_type_type |
||
634 | { |
||
635 | unsigned int extension: 1; |
||
636 | unsigned int kind: 10; /* DNTT_TYPE_TYPEDEF or |
||
637 | DNTT_TYPE_TAGDEF. */ |
||
638 | unsigned int global: 1; |
||
639 | unsigned int typeinfo: 1; |
||
640 | unsigned int unused: 19; |
||
641 | vtpointer name; |
||
642 | dnttpointer type; /* Underlying type, which for TAGDEF's may be |
||
643 | DNTT_TYPE_STRUCT, DNTT_TYPE_UNION, |
||
644 | DNTT_TYPE_ENUM, or DNTT_TYPE_CLASS. |
||
645 | For TYPEDEF's other underlying types |
||
646 | are also possible. */ |
||
647 | }; |
||
648 | |||
649 | /* DNTT_TYPE_POINTER: |
||
650 | |||
651 | Used to describe a pointer to an underlying type. |
||
652 | |||
653 | POINTSTO is a pointer into the GNTT or LNTT for the type which this |
||
654 | pointer points to. |
||
655 | |||
656 | BITLENGTH is the length of the pointer (not the underlying type). */ |
||
657 | |||
658 | struct dntt_type_pointer |
||
659 | { |
||
660 | unsigned int extension: 1; |
||
661 | unsigned int kind: 10; |
||
662 | unsigned int unused: 21; |
||
663 | dnttpointer pointsto; |
||
664 | unsigned int bitlength; |
||
665 | }; |
||
666 | |||
667 | |||
668 | /* DNTT_TYPE_ENUM: |
||
669 | |||
670 | Used to describe enumerated types. |
||
671 | |||
672 | FIRSTMEM is a pointer to a DNTT_TYPE_MEMENUM in the GNTT/LNTT which |
||
673 | describes the first member (and contains a pointer to the chain of |
||
674 | members). |
||
675 | |||
676 | BITLENGTH is the number of bits used to hold the values of the enum's |
||
677 | members. */ |
||
678 | |||
679 | struct dntt_type_enum |
||
680 | { |
||
681 | unsigned int extension: 1; |
||
682 | unsigned int kind: 10; |
||
683 | unsigned int unused: 21; |
||
684 | dnttpointer firstmem; |
||
685 | unsigned int bitlength; |
||
686 | }; |
||
687 | |||
688 | /* DNTT_TYPE_MEMENUM |
||
689 | |||
690 | Used to describe members of an enumerated type. |
||
691 | |||
692 | CLASSMEM is nonzero if this member is part of a class. |
||
693 | |||
694 | NAME points into the VT for the name of this member. |
||
695 | |||
696 | VALUE is the value of this enumeration member. |
||
697 | |||
698 | NEXTMEM points to the next DNTT_TYPE_MEMENUM in the chain. */ |
||
699 | |||
700 | struct dntt_type_memenum |
||
701 | { |
||
702 | unsigned int extension: 1; |
||
703 | unsigned int kind: 10; |
||
704 | unsigned int classmem: 1; |
||
705 | unsigned int unused: 20; |
||
706 | vtpointer name; |
||
707 | unsigned int value; |
||
708 | dnttpointer nextmem; |
||
709 | }; |
||
710 | |||
711 | /* DNTT_TYPE_SET |
||
712 | |||
713 | Used to describe PASCAL "set" type. |
||
714 | |||
715 | DECLARATION describes the bitpacking of the set. |
||
716 | |||
717 | SUBTYPE points to a DNTT entry describing the type of the members. |
||
718 | |||
719 | BITLENGTH is the size of the set. */ |
||
720 | |||
721 | struct dntt_type_set |
||
722 | { |
||
723 | unsigned int extension: 1; |
||
724 | unsigned int kind: 10; |
||
725 | unsigned int declaration: 2; |
||
726 | unsigned int unused: 19; |
||
727 | dnttpointer subtype; |
||
728 | unsigned int bitlength; |
||
729 | }; |
||
730 | |||
731 | /* DNTT_TYPE_SUBRANGE |
||
732 | |||
733 | Used to describe subrange type. |
||
734 | |||
735 | DYN_LOW describes the lower bound of the subrange: |
||
736 | |||
737 | 00 for a constant lower bound (found in LOWBOUND). |
||
738 | |||
739 | 01 for a dynamic lower bound with the lower bound found in the |
||
740 | memory address pointed to by LOWBOUND. |
||
741 | |||
742 | 10 for a dynamic lower bound described by an variable found in the |
||
743 | DNTT/LNTT (LOWBOUND would be a pointer into the DNTT/LNTT). |
||
744 | |||
745 | DYN_HIGH is similar to DYN_LOW, except it describes the upper bound. |
||
746 | |||
747 | SUBTYPE points to the type of the subrange. |
||
748 | |||
749 | BITLENGTH is the length in bits needed to describe the subrange's |
||
750 | values. */ |
||
751 | |||
752 | struct dntt_type_subrange |
||
753 | { |
||
754 | unsigned int extension: 1; |
||
755 | unsigned int kind: 10; |
||
756 | unsigned int dyn_low: 2; |
||
757 | unsigned int dyn_high: 2; |
||
758 | unsigned int unused: 17; |
||
759 | int lowbound; |
||
760 | int highbound; |
||
761 | dnttpointer subtype; |
||
762 | unsigned int bitlength; |
||
763 | }; |
||
764 | |||
765 | /* DNTT_TYPE_ARRAY |
||
766 | |||
767 | Used to describe an array type. |
||
768 | |||
769 | DECLARATION describes the bit packing used in the array. |
||
770 | |||
771 | ARRAYISBYTES is nonzero if the field in arraylength describes the |
||
772 | length in bytes rather than in bits. A value of zero is used to |
||
773 | describe an array with size 2**32. |
||
774 | |||
775 | ELEMISBYTES is nonzero if the length if each element in the array |
||
776 | is describes in bytes rather than bits. A value of zero is used |
||
777 | to an element with size 2**32. |
||
778 | |||
779 | ELEMORDER is nonzero if the elements are indexed in increasing order. |
||
780 | |||
781 | JUSTIFIED if the elements are left justified to index zero. |
||
782 | |||
783 | ARRAYLENGTH is the length of the array. |
||
784 | |||
785 | INDEXTYPE is a DNTT pointer to the type used to index the array. |
||
786 | |||
787 | ELEMTYPE is a DNTT pointer to the type for the array elements. |
||
788 | |||
789 | ELEMLENGTH is the length of each element in the array (including |
||
790 | any padding). |
||
791 | |||
792 | Multi-dimensional arrays are represented by ELEMTYPE pointing to |
||
793 | another DNTT_TYPE_ARRAY. */ |
||
794 | |||
795 | struct dntt_type_array |
||
796 | { |
||
797 | unsigned int extension: 1; |
||
798 | unsigned int kind: 10; |
||
799 | unsigned int declaration: 2; |
||
800 | unsigned int dyn_low: 2; |
||
801 | unsigned int dyn_high: 2; |
||
802 | unsigned int arrayisbytes: 1; |
||
803 | unsigned int elemisbytes: 1; |
||
804 | unsigned int elemorder: 1; |
||
805 | unsigned int justified: 1; |
||
806 | unsigned int unused: 11; |
||
807 | unsigned int arraylength; |
||
808 | dnttpointer indextype; |
||
809 | dnttpointer elemtype; |
||
810 | unsigned int elemlength; |
||
811 | }; |
||
812 | |||
813 | /* DNTT_TYPE_STRUCT |
||
814 | |||
815 | DNTT_TYPE_STRUCT is used to describe a C structure. |
||
816 | |||
817 | DECLARATION describes the bitpacking used. |
||
818 | |||
819 | FIRSTFIELD is a DNTT pointer to the first field of the structure |
||
820 | (each field contains a pointer to the next field, walk the list |
||
821 | to access all fields of the structure). |
||
822 | |||
823 | VARTAGFIELD and VARLIST are used for Pascal variant records. |
||
824 | |||
825 | BITLENGTH is the size of the structure in bits. */ |
||
826 | |||
827 | struct dntt_type_struct |
||
828 | { |
||
829 | unsigned int extension: 1; |
||
830 | unsigned int kind: 10; |
||
831 | unsigned int declaration: 2; |
||
832 | unsigned int unused: 19; |
||
833 | dnttpointer firstfield; |
||
834 | dnttpointer vartagfield; |
||
835 | dnttpointer varlist; |
||
836 | unsigned int bitlength; |
||
837 | }; |
||
838 | |||
839 | /* DNTT_TYPE_UNION |
||
840 | |||
841 | DNTT_TYPE_UNION is used to describe a C union. |
||
842 | |||
843 | FIRSTFIELD is a DNTT pointer to the beginning of the field chain. |
||
844 | |||
845 | BITLENGTH is the size of the union in bits. */ |
||
846 | |||
847 | struct dntt_type_union |
||
848 | { |
||
849 | unsigned int extension: 1; |
||
850 | unsigned int kind: 10; |
||
851 | unsigned int unused: 21; |
||
852 | dnttpointer firstfield; |
||
853 | unsigned int bitlength; |
||
854 | }; |
||
855 | |||
856 | /* DNTT_TYPE_FIELD |
||
857 | |||
858 | DNTT_TYPE_FIELD describes one field in a structure or union |
||
859 | or C++ class. |
||
860 | |||
861 | VISIBILITY is used to describe the visibility of the field |
||
862 | (for c++. public = 0, protected = 1, private = 2). |
||
863 | |||
864 | A_UNION is nonzero if this field is a member of an anonymous union. |
||
865 | |||
866 | STATICMEM is nonzero if this field is a static member of a template. |
||
867 | |||
868 | NAME is a pointer into the VT for the name of the field. |
||
869 | |||
870 | BITOFFSET gives the offset of this field in bits from the beginning |
||
871 | of the structure or union this field is a member of. |
||
872 | |||
873 | TYPE is a DNTT pointer to the type describing this field. |
||
874 | |||
875 | BITLENGTH is the size of the entry in bits. |
||
876 | |||
877 | NEXTFIELD is a DNTT pointer to the next field in the chain. */ |
||
878 | |||
879 | struct dntt_type_field |
||
880 | { |
||
881 | unsigned int extension: 1; |
||
882 | unsigned int kind: 10; |
||
883 | unsigned int visibility: 2; |
||
884 | unsigned int a_union: 1; |
||
885 | unsigned int staticmem: 1; |
||
886 | unsigned int unused: 17; |
||
887 | vtpointer name; |
||
888 | unsigned int bitoffset; |
||
889 | dnttpointer type; |
||
890 | unsigned int bitlength; |
||
891 | dnttpointer nextfield; |
||
892 | }; |
||
893 | |||
894 | /* DNTT_TYPE_VARIANT is unused by GDB. */ |
||
895 | /* DNTT_TYPE_FILE is unused by GDB. */ |
||
896 | |||
897 | /* DNTT_TYPE_FUNCTYPE |
||
898 | |||
899 | I think this is used to describe a function type (e.g., would |
||
900 | be emitted as part of a function-pointer description). |
||
901 | |||
902 | VARARGS is nonzero if this function uses varargs. |
||
903 | |||
904 | FIRSTPARAM is a DNTT pointer to the first entry in the parameter |
||
905 | chain. |
||
906 | |||
907 | RETVAL is a DNTT pointer to the type of the return value. */ |
||
908 | |||
909 | struct dntt_type_functype |
||
910 | { |
||
911 | unsigned int extension: 1; |
||
912 | unsigned int kind: 10; |
||
913 | unsigned int varargs: 1; |
||
914 | unsigned int info: 4; |
||
915 | unsigned int unused: 16; |
||
916 | unsigned int bitlength; |
||
917 | dnttpointer firstparam; |
||
918 | dnttpointer retval; |
||
919 | }; |
||
920 | |||
921 | /* DNTT_TYPE_WITH is emitted by C++ to indicate "with" scoping semantics. |
||
922 | (Probably also emitted by PASCAL to support "with"...). |
||
923 | |||
924 | C++ example: Say "memfunc" is a method of class "c", and say |
||
925 | "m" is a data member of class "c". Then from within "memfunc", |
||
926 | it is legal to reference "m" directly (e.g. you don't have to |
||
927 | say "this->m". The symbol table indicates |
||
928 | this by emitting a DNTT_TYPE_WITH symbol within the function "memfunc", |
||
929 | pointing to the type symbol for class "c". |
||
930 | |||
931 | In GDB, this symbol record is unnecessary, |
||
932 | because GDB's symbol lookup algorithm |
||
933 | infers the "with" semantics when it sees a "this" argument to the member |
||
934 | function. So GDB can safely ignore the DNTT_TYPE_WITH record. |
||
935 | |||
936 | A DNTT_TYPE_WITH has a matching DNTT_TYPE_END symbol. */ |
||
937 | |||
938 | struct dntt_type_with |
||
939 | { |
||
940 | unsigned int extension: 1; /* always zero */ |
||
941 | unsigned int kind: 10; /* always DNTT_TYPE_WITH */ |
||
942 | unsigned int addrtype: 2; /* 0 => STATTYPE */ |
||
943 | /* 1 => DYNTYPE */ |
||
944 | /* 2 => REGTYPE */ |
||
945 | unsigned int indirect: 1; /* 1 => pointer to object */ |
||
946 | unsigned int longaddr: 1; /* 1 => in long pointer space */ |
||
947 | unsigned int nestlevel: 6; /* # of nesting levels back */ |
||
948 | unsigned int doc_ranges: 1; /* 1 => location is range list */ |
||
949 | unsigned int unused: 10; |
||
950 | long location; /* where stored (allocated) */ |
||
951 | sltpointer address; |
||
952 | dnttpointer type; /* type of with expression */ |
||
953 | vtpointer name; /* name of with expression */ |
||
954 | unsigned long offset; /* byte offset from location */ |
||
955 | }; |
||
956 | |||
957 | /* DNTT_TYPE_COMMON is unsupported by GDB. */ |
||
958 | /* A DNTT_TYPE_COMMON symbol must have a matching DNTT_TYPE_END symbol */ |
||
959 | |||
960 | /* DNTT_TYPE_COBSTRUCT is unsupported by GDB. */ |
||
961 | /* DNTT_TYPE_XREF is unsupported by GDB. */ |
||
962 | /* DNTT_TYPE_SA is unsupported by GDB. */ |
||
963 | /* DNTT_TYPE_MACRO is unsupported by GDB */ |
||
964 | |||
965 | /* DNTT_TYPE_BLOCKDATA has the same structure as DNTT_TYPE_FUNCTION */ |
||
966 | |||
967 | /* The following are the C++ specific SOM records */ |
||
968 | |||
969 | /* The purpose of the DNTT_TYPE_CLASS_SCOPE is to bracket C++ methods |
||
970 | and indicate the method name belongs in the "class scope" rather |
||
971 | than in the module they are being defined in. For example: |
||
972 | |||
973 | class c { |
||
974 | ... |
||
975 | void memfunc(); // member function |
||
976 | }; |
||
977 | |||
978 | void c::memfunc() // definition of class c's "memfunc" |
||
979 | { |
||
980 | ... |
||
981 | } |
||
982 | |||
983 | main() |
||
984 | { |
||
985 | ... |
||
986 | } |
||
987 | |||
988 | In the above, the name "memfunc" is not directly visible from "main". |
||
989 | I.e., you have to say "break c::memfunc". |
||
990 | If it were a normal function (not a method), it would be visible |
||
991 | via the simple "break memfunc". Since "memfunc" otherwise looks |
||
992 | like a normal FUNCTION in the symbol table, the bracketing |
||
993 | CLASS_SCOPE is what is used to indicate it is really a method. |
||
994 | |||
995 | |||
996 | A DNTT_TYPE_CLASS_SCOPE symbol must have a matching DNTT_TYPE_END symbol. */ |
||
997 | |||
998 | struct dntt_type_class_scope |
||
999 | { |
||
1000 | unsigned int extension: 1; /* Always zero. */ |
||
1001 | unsigned int kind: 10; /* Always DNTT_TYPE_CLASS_SCOPE. */ |
||
1002 | unsigned int unused: 21; |
||
1003 | sltpointer address ; /* Pointer to SLT entry. */ |
||
1004 | dnttpointer type ; /* Pointer to class type DNTT. */ |
||
1005 | }; |
||
1006 | |||
1007 | /* C++ reference parameter. |
||
1008 | The structure of this record is the same as DNTT_TYPE_POINTER - |
||
1009 | refer to struct dntt_type_pointer. */ |
||
1010 | |||
1011 | /* The next two describe C++ pointer-to-data-member type, and |
||
1012 | pointer-to-member-function type, respectively. |
||
1013 | DNTT_TYPE_PTRMEM and DNTT_TYPE_PTRMEMFUNC have the same structure. */ |
||
1014 | |||
1015 | struct dntt_type_ptrmem |
||
1016 | { |
||
1017 | unsigned int extension: 1; /* Always zero. */ |
||
1018 | unsigned int kind: 10; /* Always DNTT_TYPE_PTRMEM. */ |
||
1019 | unsigned int unused: 21; |
||
1020 | dnttpointer pointsto ; /* Pointer to class DNTT. */ |
||
1021 | dnttpointer memtype ; /* Type of member. */ |
||
1022 | }; |
||
1023 | |||
1024 | struct dntt_type_ptrmemfunc |
||
1025 | { |
||
1026 | unsigned int extension: 1; /* Always zero. */ |
||
1027 | unsigned int kind: 10; /* Always DNTT_TYPE_PTRMEMFUNC. */ |
||
1028 | unsigned int unused: 21; |
||
1029 | dnttpointer pointsto ; /* Pointer to class DNTT. */ |
||
1030 | dnttpointer memtype ; /* Type of member. */ |
||
1031 | }; |
||
1032 | |||
1033 | /* The DNTT_TYPE_CLASS symbol is emitted to describe a class type. |
||
1034 | "memberlist" points to a chained list of FIELD or GENFIELD records |
||
1035 | indicating the class members. "parentlist" points to a chained list |
||
1036 | of INHERITANCE records indicating classes from which we inherit |
||
1037 | fields. */ |
||
1038 | |||
1039 | struct dntt_type_class |
||
1040 | { |
||
1041 | unsigned int extension: 1; /* Always zero. */ |
||
1042 | unsigned int kind: 10; /* Always DNTT_TYPE_CLASS. */ |
||
1043 | unsigned int abstract: 1; /* Is this an abstract class? */ |
||
1044 | unsigned int class_decl: 2; /* 0=class,1=union,2=struct. */ |
||
1045 | unsigned int expansion: 1; /* 1=template expansion. */ |
||
1046 | unsigned int unused: 17; |
||
1047 | dnttpointer memberlist ; /* Ptr to chain of [GEN]FIELDs. */ |
||
1048 | unsigned long vtbl_loc ; /* Offset in obj of ptr to vtbl. */ |
||
1049 | dnttpointer parentlist ; /* Ptr to K_INHERITANCE list. */ |
||
1050 | unsigned long bitlength ; /* Total at this level. */ |
||
1051 | dnttpointer identlist ; /* Ptr to chain of class ident's. */ |
||
1052 | dnttpointer friendlist ; /* Ptr to K_FRIEND list. */ |
||
1053 | dnttpointer templateptr ; /* Ptr to template. */ |
||
1054 | dnttpointer nextexp ; /* Ptr to next expansion. */ |
||
1055 | }; |
||
1056 | |||
1057 | /* Class members are indicated via either the FIELD record (for |
||
1058 | data members, same as for C struct fields), or by the GENFIELD record |
||
1059 | (for member functions). */ |
||
1060 | |||
1061 | struct dntt_type_genfield |
||
1062 | { |
||
1063 | unsigned int extension: 1; /* Always zero. */ |
||
1064 | unsigned int kind: 10; /* Always DNTT_TYPE_GENFIELD. */ |
||
1065 | unsigned int visibility: 2; /* Pub = 0, prot = 1, priv = 2. */ |
||
1066 | unsigned int a_union: 1; /* 1 => anonymous union member. */ |
||
1067 | unsigned int unused: 18; |
||
1068 | dnttpointer field ; /* Pointer to field or qualifier. */ |
||
1069 | dnttpointer nextfield ; /* Pointer to next field. */ |
||
1070 | }; |
||
1071 | |||
1072 | /* C++ virtual functions. */ |
||
1073 | |||
1074 | struct dntt_type_vfunc |
||
1075 | { |
||
1076 | unsigned int extension: 1; /* always zero */ |
||
1077 | unsigned int kind: 10; /* always DNTT_TYPE_VFUNC */ |
||
1078 | unsigned int pure: 1; /* pure virtual function ? */ |
||
1079 | unsigned int unused: 20; |
||
1080 | dnttpointer funcptr ; /* points to FUNCTION symbol */ |
||
1081 | unsigned long vtbl_offset ; /* offset into vtbl for virtual */ |
||
1082 | }; |
||
1083 | |||
1084 | /* Not precisely sure what this is intended for - DDE ignores it. */ |
||
1085 | |||
1086 | struct dntt_type_memaccess |
||
1087 | { |
||
1088 | unsigned int extension: 1; /* always zero */ |
||
1089 | unsigned int kind: 10; /* always DNTT_TYPE_MEMACCESS */ |
||
1090 | unsigned int unused: 21; |
||
1091 | dnttpointer classptr ; /* pointer to base class */ |
||
1092 | dnttpointer field ; /* pointer field */ |
||
1093 | }; |
||
1094 | |||
1095 | /* The DNTT_TYPE_INHERITANCE record describes derived classes. |
||
1096 | In particular, the "parentlist" field of the CLASS record points |
||
1097 | to a list of INHERITANCE records for classes from which we |
||
1098 | inherit members. */ |
||
1099 | |||
1100 | struct dntt_type_inheritance |
||
1101 | { |
||
1102 | unsigned int extension: 1; /* always zero */ |
||
1103 | unsigned int kind: 10; /* always DNTT_TYPE_INHERITANCE */ |
||
1104 | unsigned int Virtual: 1; /* virtual base class ? */ |
||
1105 | unsigned int visibility: 2; /* pub = 0, prot = 1, priv = 2 */ |
||
1106 | unsigned int unused: 18; |
||
1107 | dnttpointer classname ; /* first parent class, if any */ |
||
1108 | unsigned long offset ; /* offset to start of base class */ |
||
1109 | dnttpointer next ; /* pointer to next K_INHERITANCE */ |
||
1110 | unsigned long future[2] ; /* padding to 3-word block end */ |
||
1111 | }; |
||
1112 | |||
1113 | /* C++ "friend" classes ... */ |
||
1114 | |||
1115 | struct dntt_type_friend_class |
||
1116 | { |
||
1117 | unsigned int extension: 1; /* always zero */ |
||
1118 | unsigned int kind: 10; /* always DNTT_TYPE_FRIEND_CLASS */ |
||
1119 | unsigned int unused: 21; |
||
1120 | dnttpointer classptr ; /* pointer to class DNTT */ |
||
1121 | dnttpointer next ; /* next DNTT_FRIEND */ |
||
1122 | }; |
||
1123 | |||
1124 | struct dntt_type_friend_func |
||
1125 | { |
||
1126 | unsigned int extension: 1; /* always zero */ |
||
1127 | unsigned int kind: 10; /* always DNTT_TYPE_FRIEND_FUNC */ |
||
1128 | unsigned int unused: 21; |
||
1129 | dnttpointer funcptr ; /* pointer to function */ |
||
1130 | dnttpointer classptr ; /* pointer to class DNTT */ |
||
1131 | dnttpointer next ; /* next DNTT_FRIEND */ |
||
1132 | unsigned long future[2] ; /* padding to 3-word block end */ |
||
1133 | }; |
||
1134 | |||
1135 | /* DDE appears to ignore the DNTT_TYPE_MODIFIER record. |
||
1136 | It could perhaps be used to give better "ptype" output in GDB; |
||
1137 | otherwise it is probably safe for GDB to ignore it also. */ |
||
1138 | |||
1139 | struct dntt_type_modifier |
||
1140 | { |
||
1141 | unsigned int extension: 1; /* always zero */ |
||
1142 | unsigned int kind: 10; /* always DNTT_TYPE_MODIFIER */ |
||
1143 | unsigned int m_const: 1; /* const */ |
||
1144 | unsigned int m_static: 1; /* static */ |
||
1145 | unsigned int m_void: 1; /* void */ |
||
1146 | unsigned int m_volatile: 1; /* volatile */ |
||
1147 | unsigned int m_duplicate: 1; /* duplicate */ |
||
1148 | unsigned int unused: 16; |
||
1149 | dnttpointer type ; /* subtype */ |
||
1150 | unsigned long future ; /* padding to 3-word block end */ |
||
1151 | }; |
||
1152 | |||
1153 | /* I'm not sure what this was intended for - DDE ignores it. */ |
||
1154 | |||
1155 | struct dntt_type_object_id |
||
1156 | { |
||
1157 | unsigned int extension: 1; /* always zero */ |
||
1158 | unsigned int kind: 10; /* always DNTT_TYPE_OBJECT_ID */ |
||
1159 | unsigned int indirect: 1; /* Is object_ident addr of addr? */ |
||
1160 | unsigned int unused: 20; |
||
1161 | unsigned long object_ident ; /* object identifier */ |
||
1162 | unsigned long offset ; /* offset to start of base class */ |
||
1163 | dnttpointer next ; /* pointer to next K_OBJECT_ID */ |
||
1164 | unsigned long segoffset ; /* for linker fixup */ |
||
1165 | unsigned long future ; /* padding to 3-word block end */ |
||
1166 | }; |
||
1167 | |||
1168 | /* No separate dntt_type_memfunc; same as dntt_type_func */ |
||
1169 | |||
1170 | /* Symbol records to support templates. These only get used |
||
1171 | in DDE's "describe" output (like GDB's "ptype"). */ |
||
1172 | |||
1173 | /* The TEMPLATE record is the header for a template-class. |
||
1174 | Like the CLASS record, a TEMPLATE record has a memberlist that |
||
1175 | points to a list of template members. It also has an arglist |
||
1176 | pointing to a list of TEMPLATE_ARG records. */ |
||
1177 | |||
1178 | struct dntt_type_template |
||
1179 | { |
||
1180 | unsigned int extension: 1; /* always zero */ |
||
1181 | unsigned int kind: 10; /* always DNTT_TYPE_TEMPLATE */ |
||
1182 | unsigned int abstract: 1; /* is this an abstract class? */ |
||
1183 | unsigned int class_decl: 2; /* 0=class,1=union,2=struct */ |
||
1184 | unsigned int unused: 18; |
||
1185 | dnttpointer memberlist ; /* ptr to chain of K_[GEN]FIELDs */ |
||
1186 | long unused2 ; /* offset in obj of ptr to vtbl */ |
||
1187 | dnttpointer parentlist ; /* ptr to K_INHERITANCE list */ |
||
1188 | unsigned long bitlength ; /* total at this level */ |
||
1189 | dnttpointer identlist ; /* ptr to chain of class ident's */ |
||
1190 | dnttpointer friendlist ; /* ptr to K_FRIEND list */ |
||
1191 | dnttpointer arglist ; /* ptr to argument list */ |
||
1192 | dnttpointer expansions ; /* ptr to expansion list */ |
||
1193 | }; |
||
1194 | |||
1195 | /* Template-class arguments are a list of TEMPL_ARG records |
||
1196 | chained together. The "name" field is the name of the formal. |
||
1197 | E.g.: |
||
1198 | |||
1199 | template |
||
1200 | |||
1201 | Then "T" is the name of the formal argument. */ |
||
1202 | |||
1203 | struct dntt_type_templ_arg |
||
1204 | { |
||
1205 | unsigned int extension: 1; /* always zero */ |
||
1206 | unsigned int kind: 10; /* always DNTT_TYPE_TEMPL_ARG */ |
||
1207 | unsigned int usagetype: 1; /* 0 type-name 1 expression */ |
||
1208 | unsigned int unused: 20; |
||
1209 | vtpointer name ; /* name of argument */ |
||
1210 | dnttpointer type ; /* for non type arguments */ |
||
1211 | dnttpointer nextarg ; /* Next argument if any */ |
||
1212 | long future[2] ; /* padding to 3-word block end */ |
||
1213 | }; |
||
1214 | |||
1215 | /* FUNC_TEMPLATE records are sort of like FUNCTION, but are emitted |
||
1216 | for template member functions. E.g., |
||
1217 | |||
1218 | template |
||
1219 | { |
||
1220 | ... |
||
1221 | void f(); |
||
1222 | ... |
||
1223 | }; |
||
1224 | |||
1225 | Within the list of FIELDs/GENFIELDs defining the member list |
||
1226 | of the template "q", "f" would appear as a FUNC_TEMPLATE. |
||
1227 | We'll also see instances of FUNCTION "f" records for each |
||
1228 | instantiation of the template. */ |
||
1229 | |||
1230 | struct dntt_type_func_template |
||
1231 | { |
||
1232 | unsigned int extension: 1; /* always zero */ |
||
1233 | unsigned int kind: 10; /* always DNTT_TYPE_FUNC_TEMPLATE */ |
||
1234 | unsigned int public: 1; /* 1 => globally visible */ |
||
1235 | unsigned int language: 4; /* type of language */ |
||
1236 | unsigned int level: 5; /* nesting level (top level = 0)*/ |
||
1237 | unsigned int optimize: 2; /* level of optimization */ |
||
1238 | unsigned int varargs: 1; /* ellipses. Pascal/800 later */ |
||
1239 | unsigned int info: 4; /* lang-specific stuff; F_xxxx */ |
||
1240 | unsigned int inlined: 1; |
||
1241 | unsigned int localloc: 1; /* 0 at top, 1 at end of block */ |
||
1242 | unsigned int unused: 2; |
||
1243 | vtpointer name ; /* name of function */ |
||
1244 | vtpointer alias ; /* alternate name, if any */ |
||
1245 | dnttpointer firstparam ; /* first FPARAM, if any */ |
||
1246 | dnttpointer retval ; /* return type, if any */ |
||
1247 | dnttpointer arglist ; /* ptr to argument list */ |
||
1248 | }; |
||
1249 | |||
1250 | /* LINK is apparently intended to link together function template |
||
1251 | definitions with their instantiations. However, it is not clear |
||
1252 | why this would be needed, except to provide the information on |
||
1253 | a "ptype" command. And as far as I can tell, aCC does not |
||
1254 | generate this record. */ |
||
1255 | |||
1256 | struct dntt_type_link |
||
1257 | { |
||
1258 | unsigned int extension: 1; /* always zero */ |
||
1259 | unsigned int kind: 10; /* always DNTT_TYPE_LINK */ |
||
1260 | unsigned int linkKind: 4; /* always LINK_UNKNOWN */ |
||
1261 | unsigned int unused: 17; |
||
1262 | long future1 ; /* expansion */ |
||
1263 | dnttpointer ptr1 ; /* link from template */ |
||
1264 | dnttpointer ptr2 ; /* to expansion */ |
||
1265 | long future[2] ; /* padding to 3-word block end */ |
||
1266 | }; |
||
1267 | |||
1268 | /* end of C++ specific SOM's. */ |
||
1269 | |||
1270 | /* DNTT_TYPE_DYN_ARRAY_DESC is unused by GDB */ |
||
1271 | /* DNTT_TYPE_DESC_SUBRANGE is unused by GDB */ |
||
1272 | /* DNTT_TYPE_BEGIN_EXT is unused by GDB */ |
||
1273 | /* DNTT_TYPE_INLN is unused by GDB */ |
||
1274 | /* DNTT_TYPE_INLN_LIST is unused by GDB */ |
||
1275 | /* DNTT_TYPE_ALIAS is unused by GDB */ |
||
1276 | |||
1277 | struct dntt_type_doc_function |
||
1278 | { |
||
1279 | unsigned int extension: 1; /* always zero */ |
||
1280 | unsigned int kind: 10; /* K_DOC_FUNCTION or */ |
||
1281 | /* K_DOC_MEMFUNC */ |
||
1282 | unsigned int global: 1; /* 1 => globally visible */ |
||
1283 | unsigned int language: 4; /* type of language */ |
||
1284 | unsigned int level: 5; /* nesting level (top level = 0)*/ |
||
1285 | unsigned int optimize: 2; /* level of optimization */ |
||
1286 | unsigned int varargs: 1; /* ellipses. Pascal/800 later */ |
||
1287 | unsigned int info: 4; /* lang-specific stuff; F_xxxx */ |
||
1288 | unsigned int inlined: 1; |
||
1289 | unsigned int localloc: 1; /* 0 at top, 1 at end of block */ |
||
1290 | unsigned int expansion: 1; /* 1 = function expansion */ |
||
1291 | unsigned int doc_clone: 1; |
||
1292 | vtpointer name; /* name of function */ |
||
1293 | vtpointer alias; /* alternate name, if any */ |
||
1294 | dnttpointer firstparam; /* first FPARAM, if any */ |
||
1295 | sltpointer address; /* code and text locations */ |
||
1296 | CORE_ADDR entryaddr; /* address of entry point */ |
||
1297 | dnttpointer retval; /* return type, if any */ |
||
1298 | CORE_ADDR lowaddr; /* lowest address of function */ |
||
1299 | CORE_ADDR hiaddr; /* highest address of function */ |
||
1300 | dnttpointer inline_list; /* pointer to first inline */ |
||
1301 | ltpointer lt_offset; /* start of frag/cp line table */ |
||
1302 | ctxtpointer ctxt_offset; /* start of context table for this routine */ |
||
1303 | }; |
||
1304 | |||
1305 | /* DNTT_TYPE_DOC_MEMFUNC is unused by GDB */ |
||
1306 | |||
1307 | /* DNTT_TYPE_GENERIC and DNTT_TYPE_BLOCK are convience structures |
||
1308 | so we can examine a DNTT entry in a generic fashion. */ |
||
1309 | struct dntt_type_generic |
||
1310 | { |
||
1311 | unsigned int word[9]; |
||
1312 | }; |
||
1313 | |||
1314 | struct dntt_type_block |
||
1315 | { |
||
1316 | unsigned int extension: 1; |
||
1317 | unsigned int kind: 10; |
||
1318 | unsigned int unused: 21; |
||
1319 | unsigned int word[2]; |
||
1320 | }; |
||
1321 | |||
1322 | /* One entry in a DNTT (either the LNTT or GNTT). |
||
1323 | This is a union of the above 60 or so structure definitions. */ |
||
1324 | |||
1325 | union dnttentry |
||
1326 | { |
||
1327 | struct dntt_type_srcfile dsfile; |
||
1328 | struct dntt_type_module dmodule; |
||
1329 | struct dntt_type_function dfunc; |
||
1330 | struct dntt_type_function dentry; |
||
1331 | struct dntt_type_begin dbegin; |
||
1332 | struct dntt_type_end dend; |
||
1333 | struct dntt_type_fparam dfparam; |
||
1334 | struct dntt_type_svar dsvar; |
||
1335 | struct dntt_type_dvar ddvar; |
||
1336 | struct dntt_type_const dconst; |
||
1337 | struct dntt_type_type dtype; |
||
1338 | struct dntt_type_type dtag; |
||
1339 | struct dntt_type_pointer dptr; |
||
1340 | struct dntt_type_enum denum; |
||
1341 | struct dntt_type_memenum dmember; |
||
1342 | struct dntt_type_set dset; |
||
1343 | struct dntt_type_subrange dsubr; |
||
1344 | struct dntt_type_array darray; |
||
1345 | struct dntt_type_struct dstruct; |
||
1346 | struct dntt_type_union dunion; |
||
1347 | struct dntt_type_field dfield; |
||
1348 | struct dntt_type_functype dfunctype; |
||
1349 | struct dntt_type_with dwith; |
||
1350 | struct dntt_type_function dblockdata; |
||
1351 | struct dntt_type_class_scope dclass_scope; |
||
1352 | struct dntt_type_pointer dreference; |
||
1353 | struct dntt_type_ptrmem dptrmem; |
||
1354 | struct dntt_type_ptrmemfunc dptrmemfunc; |
||
1355 | struct dntt_type_class dclass; |
||
1356 | struct dntt_type_genfield dgenfield; |
||
1357 | struct dntt_type_vfunc dvfunc; |
||
1358 | struct dntt_type_memaccess dmemaccess; |
||
1359 | struct dntt_type_inheritance dinheritance; |
||
1360 | struct dntt_type_friend_class dfriend_class; |
||
1361 | struct dntt_type_friend_func dfriend_func; |
||
1362 | struct dntt_type_modifier dmodifier; |
||
1363 | struct dntt_type_object_id dobject_id; |
||
1364 | struct dntt_type_template dtemplate; |
||
1365 | struct dntt_type_templ_arg dtempl_arg; |
||
1366 | struct dntt_type_func_template dfunc_template; |
||
1367 | struct dntt_type_link dlink; |
||
1368 | struct dntt_type_doc_function ddocfunc; |
||
1369 | struct dntt_type_generic dgeneric; |
||
1370 | struct dntt_type_block dblock; |
||
1371 | }; |
||
1372 | |||
1373 | /* Source line entry types. */ |
||
1374 | enum slttype |
||
1375 | { |
||
1376 | SLT_NORMAL, |
||
1377 | SLT_SRCFILE, |
||
1378 | SLT_MODULE, |
||
1379 | SLT_FUNCTION, |
||
1380 | SLT_ENTRY, |
||
1381 | SLT_BEGIN, |
||
1382 | SLT_END, |
||
1383 | SLT_WITH, |
||
1384 | SLT_EXIT, |
||
1385 | SLT_ASSIST, |
||
1386 | SLT_MARKER, |
||
1387 | SLT_CLASS_SCOPE, |
||
1388 | SLT_INLN, |
||
1389 | SLT_NORMAL_OFFSET, |
||
1390 | }; |
||
1391 | |||
1392 | /* A normal source line entry. Simply provides a mapping of a source |
||
1393 | line number to a code address. |
||
1394 | |||
1395 | SLTDESC will always be SLT_NORMAL or SLT_EXIT. */ |
||
1396 | |||
1397 | struct slt_normal |
||
1398 | { |
||
1399 | unsigned int sltdesc: 4; |
||
1400 | unsigned int line: 28; |
||
1401 | CORE_ADDR address; |
||
1402 | }; |
||
1403 | |||
1404 | struct slt_normal_off |
||
1405 | { |
||
1406 | unsigned int sltdesc: 4; |
||
1407 | unsigned int offset: 6; |
||
1408 | unsigned int line: 22; |
||
1409 | CORE_ADDR address; |
||
1410 | }; |
||
1411 | |||
1412 | /* A special source line entry. Provides a mapping of a declaration |
||
1413 | to a line number. These entries point back into the DNTT which |
||
1414 | references them. */ |
||
1415 | |||
1416 | struct slt_special |
||
1417 | { |
||
1418 | unsigned int sltdesc: 4; |
||
1419 | unsigned int line: 28; |
||
1420 | dnttpointer backptr; |
||
1421 | }; |
||
1422 | |||
1423 | /* Used to describe nesting. |
||
1424 | |||
1425 | For nested languages, an slt_assist entry must follow each SLT_FUNC |
||
1426 | entry in the SLT. The address field will point forward to the |
||
1427 | first slt_normal entry within the function's scope. */ |
||
1428 | |||
1429 | struct slt_assist |
||
1430 | { |
||
1431 | unsigned int sltdesc: 4; |
||
1432 | unsigned int unused: 28; |
||
1433 | sltpointer address; |
||
1434 | }; |
||
1435 | |||
1436 | struct slt_generic |
||
1437 | { |
||
1438 | unsigned int word[2]; |
||
1439 | }; |
||
1440 | |||
1441 | union sltentry |
||
1442 | { |
||
1443 | struct slt_normal snorm; |
||
1444 | struct slt_normal_off snormoff; |
||
1445 | struct slt_special sspec; |
||
1446 | struct slt_assist sasst; |
||
1447 | struct slt_generic sgeneric; |
||
1448 | }; |
||
1449 | |||
1450 | /* $LINES$ declarations |
||
1451 | This is the line table used for optimized code, which is only present |
||
1452 | in the new $PROGRAM_INFO$ debug space. */ |
||
1453 | |||
1454 | #define DST_LN_ESCAPE_FLAG1 15 |
||
1455 | #define DST_LN_ESCAPE_FLAG2 14 |
||
1456 | #define DST_LN_CTX_SPEC1 13 |
||
1457 | #define DST_LN_CTX_SPEC2 12 |
||
1458 | |||
1459 | /* Escape function codes: */ |
||
1460 | |||
1461 | typedef enum |
||
1462 | { |
||
1463 | dst_ln_pad, /* pad byte */ |
||
1464 | dst_ln_escape_1, /* reserved */ |
||
1465 | dst_ln_dpc1_dln1, /* 1 byte line delta, 1 byte pc delta */ |
||
1466 | dst_ln_dpc2_dln2, /* 2 bytes line delta, 2 bytes pc delta */ |
||
1467 | dst_ln_pc4_ln4, /* 4 bytes ABSOLUTE line number, 4 bytes ABSOLUTE pc */ |
||
1468 | dst_ln_dpc0_dln1, /* 1 byte line delta, pc delta = 0 */ |
||
1469 | dst_ln_ln_off_1, /* statement escape, stmt # = 1 (2nd stmt on line) */ |
||
1470 | dst_ln_ln_off, /* statement escape, stmt # = next byte */ |
||
1471 | dst_ln_entry, /* entry escape, next byte is entry number */ |
||
1472 | dst_ln_exit, /* exit escape */ |
||
1473 | dst_ln_stmt_end, /* gap escape, 4 bytes pc delta */ |
||
1474 | dst_ln_stmt_cp, /* current stmt is a critical point */ |
||
1475 | dst_ln_escape_12, /* reserved */ |
||
1476 | dst_ln_escape_13, /* this is an exception site record */ |
||
1477 | dst_ln_nxt_byte, /* next byte contains the real escape code */ |
||
1478 | dst_ln_end, /* end escape, final entry follows */ |
||
1479 | dst_ln_escape1_END_OF_ENUM |
||
1480 | } |
||
1481 | dst_ln_escape1_t; |
||
1482 | |||
1483 | typedef enum |
||
1484 | { |
||
1485 | dst_ln_ctx_1, /* next byte describes context switch with 5-bit */ |
||
1486 | /* index into the image table and 3-bit run length. */ |
||
1487 | /* If run length is 0, end with another cxt specifier or ctx_end */ |
||
1488 | dst_ln_ctx_2, /* next 2 bytes switch context: 13 bit index, 3 bit run length */ |
||
1489 | dst_ln_ctx_4, /* next 4 bytes switch context: 29 bit index, 3 bit run length */ |
||
1490 | dst_ln_ctx_end, /* end current context */ |
||
1491 | dst_ln_col_run_1, /* next byte is column position of start of next statement, */ |
||
1492 | /* following byte is length of statement */ |
||
1493 | dst_ln_col_run_2, /* next 2 bytes is column position of start of next statement, */ |
||
1494 | /* following 2 bytes is length of statement */ |
||
1495 | dst_ln_init_base1, /* next 4 bytes are absolute PC, followed by 1 byte of line number */ |
||
1496 | dst_ln_init_base2, /* next 4 bytes are absolute PC, followed by 2 bytes of line number */ |
||
1497 | dst_ln_init_base3, /* next 4 bytes are absolute PC, followed by 3 bytes of line number */ |
||
1498 | dst_ln_escape2_END_OF_ENUM |
||
1499 | } |
||
1500 | dst_ln_escape2_t; |
||
1501 | |||
1502 | typedef union |
||
1503 | { |
||
1504 | struct |
||
1505 | { |
||
1506 | unsigned int pc_delta : 4; /* 4 bit pc delta */ |
||
1507 | int ln_delta : 4; /* 4 bit line number delta */ |
||
1508 | } |
||
1509 | delta; |
||
1510 | |||
1511 | struct |
||
1512 | { |
||
1513 | unsigned int esc_flag : 4; /* alias for pc_delta */ |
||
1514 | unsigned int esc_code : 4; /* escape function code (dst_ln_escape1_t, or ...2_t */ |
||
1515 | } |
||
1516 | esc; |
||
1517 | |||
1518 | struct |
||
1519 | { |
||
1520 | unsigned int esc_flag : 4; /* dst_ln_ctx_spec1, or dst_ln_ctx_spec2 */ |
||
1521 | unsigned int run_length : 2; |
||
1522 | unsigned int ctx_index : 2; /* ...spec2 contains index; ...spec1, index - 4 */ |
||
1523 | } |
||
1524 | ctx_spec; |
||
1525 | |||
1526 | char sdata; /* signed data byte */ |
||
1527 | unsigned char udata; /* unsigned data byte */ |
||
1528 | } |
||
1529 | dst_ln_entry_t, |
||
1530 | * dst_ln_entry_ptr_t; |
||
1531 | |||
1532 | /* Warning: although the above union occupies only 1 byte the compiler treats |
||
1533 | it as having size 2 (the minimum size of a struct). Therefore a sequence of |
||
1534 | dst_ln_entry_t's cannot be described as an array, and walking through such a |
||
1535 | sequence requires convoluted code such as |
||
1536 | ln_ptr = (dst_ln_entry_ptr_t) (char*) ln_ptr + 1 |
||
1537 | We regret the inconvenience. */ |
||
1538 | |||
1539 | /* Structure for interpreting the byte following a dst_ln_ctx1 entry. */ |
||
1540 | typedef struct |
||
1541 | { |
||
1542 | unsigned int ctx1_index : 5; /* 5 bit index into context table */ |
||
1543 | unsigned int ctx1_run_length : 3; /* 3 bit run length */ |
||
1544 | } dst_ln_ctx1_t, |
||
1545 | *dst_ln_ctx1_ptr_t; |
||
1546 | |||
1547 | /* Structure for interpreting the bytes following a dst_ln_ctx2 entry. */ |
||
1548 | typedef struct |
||
1549 | { |
||
1550 | unsigned int ctx2_index : 13; /* 13 bit index into context table */ |
||
1551 | unsigned int ctx2_run_length : 3; /* 3 bit run length */ |
||
1552 | } dst_ln_ctx2_t, |
||
1553 | *dst_ln_ctx2_ptr_t; |
||
1554 | |||
1555 | /* Structure for interpreting the bytes following a dst_ln_ctx4 entry. */ |
||
1556 | typedef struct |
||
1557 | { |
||
1558 | unsigned int ctx4_index : 29; /* 29 bit index into context table */ |
||
1559 | unsigned int ctx4_run_length : 3; /* 3 bit run length */ |
||
1560 | } dst_ln_ctx4_t, |
||
1561 | *dst_ln_ctx4_ptr_t; |
||
1562 | |||
1563 | |||
1564 | /* PXDB definitions. |
||
1565 | |||
1566 | PXDB is a post-processor which takes the executable file |
||
1567 | and massages the debug information so that the debugger may |
||
1568 | start up and run more efficiently. Some of the tasks |
||
1569 | performed by PXDB are: |
||
1570 | |||
1571 | o Remove duplicate global type and variable information |
||
1572 | from the GNTT, |
||
1573 | |||
1574 | o Append the GNTT onto the end of the LNTT and place both |
||
1575 | back in the LNTT section, |
||
1576 | |||
1577 | o Build quick look-up tables (description follows) for |
||
1578 | files, procedures, modules, and paragraphs (for Cobol), |
||
1579 | placing these in the GNTT section, |
||
1580 | |||
1581 | o Reconstruct the header appearing in the header section |
||
1582 | to access this information. |
||
1583 | |||
1584 | The "quick look-up" tables are in the $GNTT$ sub-space, in |
||
1585 | the following order: |
||
1586 | |||
1587 | Procedures -sorted by address |
||
1588 | Source files -sorted by address (of the |
||
1589 | generated code from routines) |
||
1590 | Modules -sorted by address |
||
1591 | Classes - |
||
1592 | Address Alias -sorted by index > |
||
1593 | Object IDs -sorted by object identifier |
||
1594 | |||
1595 | Most quick entries have (0-based) indices into the LNTT tables to |
||
1596 | the full entries for the item it describes. |
||
1597 | |||
1598 | The post-PXDB header is in the $HEADER$ sub-space. Alas, it |
||
1599 | occurs in different forms, depending on the optimization level |
||
1600 | in the compilation step and whether PXDB was run or not. The |
||
1601 | worst part is the forms aren't self-describing, so we'll have |
||
1602 | to grovel in the bits to figure out what kind we're looking at |
||
1603 | (see hp_get_header in hp-psymtab-read.c). */ |
||
1604 | |||
1605 | /* PXDB versions. */ |
||
1606 | |||
1607 | #define PXDB_VERSION_CPLUSPLUS 1 |
||
1608 | #define PXDB_VERSION_7_4 2 |
||
1609 | #define PXDB_VERSION_CPP_30 3 |
||
1610 | #define PXDB_VERSION_DDE_3_2A 4 |
||
1611 | #define PXDB_VERSION_DDE_3_2 5 |
||
1612 | #define PXDB_VERSION_DDE_4_0 6 |
||
1613 | |||
1614 | #define PXDB_VERSION_2_1 1 |
||
1615 | |||
1616 | /* Header version for the case that there is no DOC info |
||
1617 | but the executable has been processed by pxdb (the easy |
||
1618 | case, from "cc -g"). */ |
||
1619 | |||
1620 | typedef struct PXDB_struct |
||
1621 | { |
||
1622 | int pd_entries; /* # of entries in function look-up table */ |
||
1623 | int fd_entries; /* # of entries in file look-up table */ |
||
1624 | int md_entries; /* # of entries in module look-up table */ |
||
1625 | unsigned int pxdbed : 1; /* 1 => file has been preprocessed */ |
||
1626 | unsigned int bighdr : 1; /* 1 => this header contains 'time' word */ |
||
1627 | unsigned int sa_header : 1;/* 1 => created by SA version of pxdb */ |
||
1628 | /* used for version check in xdb */ |
||
1629 | unsigned int inlined: 1; /* one or more functions have been inlined */ |
||
1630 | unsigned int spare:12; |
||
1631 | short version; /* pxdb header version */ |
||
1632 | int globals; /* index into the DNTT where GNTT begins */ |
||
1633 | unsigned int time; /* modify time of file before being pxdbed */ |
||
1634 | int pg_entries; /* # of entries in label look-up table */ |
||
1635 | int functions; /* actual number of functions */ |
||
1636 | int files; /* actual number of files */ |
||
1637 | int cd_entries; /* # of entries in class look-up table */ |
||
1638 | int aa_entries; /* # of entries in addr alias look-up table */ |
||
1639 | int oi_entries; /* # of entries in object id look-up table */ |
||
1640 | } PXDB_header, *PXDB_header_ptr; |
||
1641 | |||
1642 | /* Header version for the case that there is no DOC info and the |
||
1643 | executable has NOT been processed by pxdb. */ |
||
1644 | |||
1645 | typedef struct XDB_header_struct |
||
1646 | { |
||
1647 | long gntt_length; |
||
1648 | long lntt_length; |
||
1649 | long slt_length; |
||
1650 | long vt_length; |
||
1651 | long xt_length; |
||
1652 | } XDB_header; |
||
1653 | |||
1654 | /* Header version for the case that there is DOC info and the |
||
1655 | executable has been processed by pxdb. */ |
||
1656 | |||
1657 | typedef struct DOC_info_PXDB_header_struct |
||
1658 | { |
||
1659 | unsigned int xdb_header: 1; /* bit set if this is post-3.1 xdb */ |
||
1660 | unsigned int doc_header: 1; /* bit set if this is doc-style header */ |
||
1661 | unsigned int version: 8; /* version of pxdb see defines |
||
1662 | PXDB_VERSION_* in this file. */ |
||
1663 | unsigned int reserved_for_flags: 16;/* for future use; -- must be |
||
1664 | set to zero. */ |
||
1665 | unsigned int has_aux_pd_table: 1; /* $GNTT$ has aux PD table */ |
||
1666 | unsigned int has_expr_table: 1; /* space has $EXPR$ */ |
||
1667 | unsigned int has_range_table: 1; /* space has $RANGE$ */ |
||
1668 | unsigned int has_context_table: 1; /* space has $SRC_CTXT$ */ |
||
1669 | unsigned int has_lines_table: 1; /* space contains a $LINES$ |
||
1670 | subspace for line tables. */ |
||
1671 | unsigned int has_lt_offset_map: 1; /* space contains an lt_offset |
||
1672 | subspace for line table mapping. */ |
||
1673 | /* The following fields are the same as those in the PXDB_header in $DEBUG$ */ |
||
1674 | int pd_entries; /* # of entries in function look-up table */ |
||
1675 | int fd_entries; /* # of entries in file look-up table */ |
||
1676 | int md_entries; /* # of entries in module look-up table */ |
||
1677 | unsigned int pxdbed : 1; /* 1 => file has been preprocessed */ |
||
1678 | unsigned int bighdr : 1; /* 1 => this header contains 'time' word */ |
||
1679 | unsigned int sa_header : 1;/* 1 => created by SA version of pxdb */ |
||
1680 | /* used for version check in xdb */ |
||
1681 | unsigned int inlined: 1; /* one or more functions have been inlined */ |
||
1682 | unsigned int spare : 28; |
||
1683 | int globals; /* index into the DNTT where GNTT begins */ |
||
1684 | unsigned int time; /* modify time of file before being pxdbed */ |
||
1685 | int pg_entries; /* # of entries in label look-up table */ |
||
1686 | int functions; /* actual number of functions */ |
||
1687 | int files; /* actual number of files */ |
||
1688 | int cd_entries; /* # of entries in class look-up table */ |
||
1689 | int aa_entries; /* # of entries in addr alias look-up table */ |
||
1690 | int oi_entries; /* # of entries in object id look-up table */ |
||
1691 | } DOC_info_PXDB_header; |
||
1692 | |||
1693 | /* Header version for the case that there is DOC info and the |
||
1694 | executable has NOT been processed by pxdb. */ |
||
1695 | |||
1696 | typedef struct DOC_info_header_struct |
||
1697 | { |
||
1698 | unsigned int xdb_header: 1; /* bit set if this is post-3.1 xdb */ |
||
1699 | unsigned int doc_header: 1; /* bit set if this is doc-style header*/ |
||
1700 | unsigned int version: 8; /* version of debug/header |
||
1701 | format. For 10.0 the value |
||
1702 | will be 1. For "Davis" the value is 2. */ |
||
1703 | unsigned int reserved_for_flags: 18; /* for future use; -- must be set to zero. */ |
||
1704 | unsigned int has_range_table: 1; /* space contains a $RANGE$ subspace for variable ranges. */ |
||
1705 | unsigned int has_context_table: 1; /* space contains a $CTXT$ subspace for context/inline table. */ |
||
1706 | unsigned int has_lines_table: 1; /* space contains a $LINES$ subspace for line tables. */ |
||
1707 | unsigned int has_lt_offset_map: 1; /* space contains an lt_offset subspace for line table mapping. */ |
||
1708 | |||
1709 | long gntt_length; /* same as old header */ |
||
1710 | long lntt_length; /* same as old header */ |
||
1711 | long slt_length; /* same as old header */ |
||
1712 | long vt_length; /* same as old header */ |
||
1713 | long xt_length; /* same as old header */ |
||
1714 | long ctxt_length; /* present only if version >= 2 */ |
||
1715 | long range_length; /* present only if version >= 2 */ |
||
1716 | long expr_length; /* present only if version >= 2 */ |
||
1717 | |||
1718 | } DOC_info_header; |
||
1719 | |||
1720 | typedef union GenericDebugHeader_union |
||
1721 | { |
||
1722 | PXDB_header no_doc; |
||
1723 | DOC_info_PXDB_header doc; |
||
1724 | XDB_header no_pxdb_no_doc; |
||
1725 | DOC_info_header no_pxdb_doc; |
||
1726 | } GenericDebugHeader; |
||
1727 | |||
1728 | |||
1729 | /* Procedure Descriptor: |
||
1730 | An element of the procedure quick look-up table. */ |
||
1731 | |||
1732 | typedef struct quick_procedure |
||
1733 | { |
||
1734 | long isym; /* 0-based index of first symbol |
||
1735 | for procedure in $LNTT$, |
||
1736 | i.e. the procedure itself. */ |
||
1737 | CORE_ADDR adrStart; /* memory adr of start of proc */ |
||
1738 | CORE_ADDR adrEnd; /* memory adr of end of proc */ |
||
1739 | char *sbAlias; /* alias name of procedure */ |
||
1740 | char *sbProc; /* real name of procedure */ |
||
1741 | CORE_ADDR adrBp; /* address of entry breakpoint */ |
||
1742 | CORE_ADDR adrExitBp; /* address of exit breakpoint */ |
||
1743 | int icd; /* member of this class (index) */ |
||
1744 | unsigned int ipd; /* index of template for this */ |
||
1745 | /* function (index) */ |
||
1746 | unsigned int unused: 5; |
||
1747 | unsigned int no_lt_offset: 1;/* no entry in lt_offset table */ |
||
1748 | unsigned int fTemplate: 1; /* function template */ |
||
1749 | unsigned int fExpansion: 1; /* function expansion */ |
||
1750 | unsigned int linked : 1; /* linked with other expansions */ |
||
1751 | unsigned int duplicate: 1; /* clone of another procedure */ |
||
1752 | unsigned int overloaded:1; /* overloaded function */ |
||
1753 | unsigned int member: 1; /* class member function */ |
||
1754 | unsigned int constructor:1; /* constructor function */ |
||
1755 | unsigned int destructor:1; /* destructor function */ |
||
1756 | unsigned int Static: 1; /* static function */ |
||
1757 | unsigned int Virtual: 1; /* virtual function */ |
||
1758 | unsigned int constant: 1; /* constant function */ |
||
1759 | unsigned int pure: 1; /* pure (virtual) function */ |
||
1760 | unsigned int language: 4; /* procedure's language */ |
||
1761 | unsigned int inlined: 1; /* function has been inlined */ |
||
1762 | unsigned int Operator: 1; /* operator function */ |
||
1763 | unsigned int stub: 1; /* bodyless function */ |
||
1764 | unsigned int optimize: 2; /* optimization level */ |
||
1765 | unsigned int level: 5; /* nesting level (top=0) */ |
||
1766 | } quick_procedure_entry, *quick_procedure_entry_ptr; |
||
1767 | |||
1768 | /* Source File Descriptor: |
||
1769 | An element of the source file quick look-up table. */ |
||
1770 | |||
1771 | typedef struct quick_source |
||
1772 | { |
||
1773 | long isym; /* 0-based index in $LNTT$ of |
||
1774 | first symbol for this file. */ |
||
1775 | CORE_ADDR adrStart; /* mem adr of start of file's code */ |
||
1776 | CORE_ADDR adrEnd; /* mem adr of end of file's code */ |
||
1777 | char *sbFile; /* name of source file */ |
||
1778 | unsigned int fHasDecl: 1; /* do we have a .d file? */ |
||
1779 | unsigned int fWarned: 1; /* have warned about age problems? */ |
||
1780 | unsigned int fSrcfile: 1; /* 0 => include 1=> source */ |
||
1781 | unsigned short ilnMac; /* lines in file (0 if don't know) */ |
||
1782 | int ipd; /* 0-based index of first procedure |
||
1783 | in this file, in the quick |
||
1784 | look-up table of procedures. */ |
||
1785 | unsigned int *rgLn; /* line pointer array, if any */ |
||
1786 | } quick_file_entry, *quick_file_entry_ptr; |
||
1787 | |||
1788 | /* Module Descriptor: |
||
1789 | An element of the module quick reference table. */ |
||
1790 | |||
1791 | typedef struct quick_module |
||
1792 | { |
||
1793 | long isym; /* 0-based index of first |
||
1794 | symbol for module. */ |
||
1795 | CORE_ADDR adrStart; /* adr of start of mod. */ |
||
1796 | CORE_ADDR adrEnd; /* adr of end of mod. */ |
||
1797 | char *sbAlias; /* alias name of module */ |
||
1798 | char *sbMod; /* real name of module */ |
||
1799 | unsigned int imports: 1; /* module have any imports? */ |
||
1800 | unsigned int vars_in_front: 1; /* module globals in front? */ |
||
1801 | unsigned int vars_in_gaps: 1; /* module globals in gaps? */ |
||
1802 | unsigned int language: 4; /* type of language */ |
||
1803 | unsigned int unused : 25; |
||
1804 | unsigned int unused2; /* space for future stuff */ |
||
1805 | } quick_module_entry, *quick_module_entry_ptr; |
||
1806 | |||
1807 | /* Auxiliary Procedure Descriptor: |
||
1808 | An element of the auxiliary procedure quick look-up table. */ |
||
1809 | |||
1810 | typedef struct quick_aux_procedure |
||
1811 | { |
||
1812 | long isym_inln; /* start on inline list for proc */ |
||
1813 | long spare; |
||
1814 | } quick_aux_procedure_entry, *quick_aux_procedure_entry_ptr; |
||
1815 | |||
1816 | /* Paragraph Descriptor: |
||
1817 | An element of the paragraph quick look-up table. */ |
||
1818 | |||
1819 | typedef struct quick_paragraph |
||
1820 | { |
||
1821 | long isym; /* first symbol for label (index) */ |
||
1822 | CORE_ADDR adrStart; /* memory adr of start of label */ |
||
1823 | CORE_ADDR adrEnd; /* memory adr of end of label */ |
||
1824 | char *sbLab; /* name of label */ |
||
1825 | unsigned int inst; /* Used in xdb to store inst @ bp */ |
||
1826 | unsigned int sect: 1; /* true = section, false = parag. */ |
||
1827 | unsigned int unused: 31; /* future use */ |
||
1828 | } quick_paragraph_entry, *quick_paragraph_entry_ptr; |
||
1829 | |||
1830 | /* Class Descriptor: |
||
1831 | An element of the class quick look-up table. */ |
||
1832 | |||
1833 | typedef struct quick_class |
||
1834 | { |
||
1835 | char *sbClass; /* name of class */ |
||
1836 | long isym; /* class symbol (tag) */ |
||
1837 | unsigned int type : 2; /* 0=class, 1=union, 2=struct */ |
||
1838 | unsigned int fTemplate : 1;/* class template */ |
||
1839 | unsigned int expansion : 1;/* template expansion */ |
||
1840 | unsigned int unused :28; |
||
1841 | sltpointer lowscope; /* beginning of defined scope */ |
||
1842 | sltpointer hiscope; /* end of defined scope */ |
||
1843 | } quick_class_entry, *quick_class_entry_ptr; |
||
1844 | |||
1845 | /* Address Alias Entry |
||
1846 | An element of the address alias quick look-up table. */ |
||
1847 | |||
1848 | typedef struct quick_alias |
||
1849 | { |
||
1850 | CORE_ADDR low; |
||
1851 | CORE_ADDR high; |
||
1852 | int index; |
||
1853 | unsigned int unused : 31; |
||
1854 | unsigned int alternate : 1; /* alternate unnamed aliases? */ |
||
1855 | } quick_alias_entry, *quick_alias_entry_ptr; |
||
1856 | |||
1857 | /* Object Identification Entry |
||
1858 | An element of the object identification quick look-up table. */ |
||
1859 | |||
1860 | typedef struct quick_obj_ID |
||
1861 | { |
||
1862 | CORE_ADDR obj_ident; /* class identifier */ |
||
1863 | long isym; /* class symbol */ |
||
1864 | long offset; /* offset to object start */ |
||
1865 | } quick_obj_ID_entry, *quick_obj_ID_entry_ptr; |
||
1866 | |||
1867 | #endif /* HP_SYMTAB_INCLUDED */?>> |