1 | /* Output dbx-format symbol table information from GNU compiler. |
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2 | Copyright (C) 1987, 88, 92, 93, 94, 1995 Free Software Foundation, Inc. |
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3 | |
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4 | This file is part of GNU CC. |
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5 | |
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6 | GNU CC is free software; you can redistribute it and/or modify |
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7 | it under the terms of the GNU General Public License as published by |
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8 | the Free Software Foundation; either version 2, or (at your option) |
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9 | any later version. |
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10 | |
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11 | GNU CC is distributed in the hope that it will be useful, |
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12 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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14 | GNU General Public License for more details. |
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15 | |
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16 | You should have received a copy of the GNU General Public License |
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17 | along with GNU CC; see the file COPYING. If not, write to |
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18 | the Free Software Foundation, 59 Temple Place - Suite 330, |
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19 | Boston, MA 02111-1307, USA. */ |
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20 | |
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21 | |
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22 | /* Output dbx-format symbol table data. |
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23 | This consists of many symbol table entries, each of them |
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24 | a .stabs assembler pseudo-op with four operands: |
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25 | a "name" which is really a description of one symbol and its type, |
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26 | a "code", which is a symbol defined in stab.h whose name starts with N_, |
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27 | an unused operand always 0, |
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28 | and a "value" which is an address or an offset. |
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29 | The name is enclosed in doublequote characters. |
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30 | |
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31 | Each function, variable, typedef, and structure tag |
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32 | has a symbol table entry to define it. |
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33 | The beginning and end of each level of name scoping within |
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34 | a function are also marked by special symbol table entries. |
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35 | |
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36 | The "name" consists of the symbol name, a colon, a kind-of-symbol letter, |
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37 | and a data type number. The data type number may be followed by |
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38 | "=" and a type definition; normally this will happen the first time |
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39 | the type number is mentioned. The type definition may refer to |
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40 | other types by number, and those type numbers may be followed |
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41 | by "=" and nested definitions. |
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42 | |
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43 | This can make the "name" quite long. |
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44 | When a name is more than 80 characters, we split the .stabs pseudo-op |
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45 | into two .stabs pseudo-ops, both sharing the same "code" and "value". |
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46 | The first one is marked as continued with a double-backslash at the |
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47 | end of its "name". |
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48 | |
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49 | The kind-of-symbol letter distinguished function names from global |
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50 | variables from file-scope variables from parameters from auto |
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51 | variables in memory from typedef names from register variables. |
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52 | See `dbxout_symbol'. |
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53 | |
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54 | The "code" is mostly redundant with the kind-of-symbol letter |
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55 | that goes in the "name", but not entirely: for symbols located |
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56 | in static storage, the "code" says which segment the address is in, |
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57 | which controls how it is relocated. |
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58 | |
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59 | The "value" for a symbol in static storage |
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60 | is the core address of the symbol (actually, the assembler |
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61 | label for the symbol). For a symbol located in a stack slot |
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62 | it is the stack offset; for one in a register, the register number. |
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63 | For a typedef symbol, it is zero. |
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64 | |
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65 | If DEBUG_SYMS_TEXT is defined, all debugging symbols must be |
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66 | output while in the text section. |
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67 | |
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68 | For more on data type definitions, see `dbxout_type'. */ |
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69 | |
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70 | /* Include these first, because they may define MIN and MAX. */ |
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71 | #include <stdio.h> |
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72 | #include <errno.h> |
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73 | |
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74 | #include "config.h" |
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75 | #include "tree.h" |
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76 | #include "rtl.h" |
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77 | #include "flags.h" |
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78 | #include "regs.h" |
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79 | #include "insn-config.h" |
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80 | #include "reload.h" |
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81 | #include "defaults.h" |
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82 | #include "output.h" /* ASM_OUTPUT_SOURCE_LINE may refer to sdb functions. */ |
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83 | |
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84 | #ifndef errno |
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85 | extern int errno; |
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86 | #endif |
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87 | |
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88 | #ifdef XCOFF_DEBUGGING_INFO |
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89 | #include "xcoffout.h" |
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90 | #endif |
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91 | |
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92 | #ifndef ASM_STABS_OP |
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93 | #define ASM_STABS_OP ".stabs" |
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94 | #endif |
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95 | |
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96 | #ifndef ASM_STABN_OP |
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97 | #define ASM_STABN_OP ".stabn" |
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98 | #endif |
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99 | |
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100 | #ifndef DBX_TYPE_DECL_STABS_CODE |
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101 | #define DBX_TYPE_DECL_STABS_CODE N_LSYM |
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102 | #endif |
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103 | |
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104 | #ifndef DBX_STATIC_CONST_VAR_CODE |
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105 | #define DBX_STATIC_CONST_VAR_CODE N_FUN |
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106 | #endif |
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107 | |
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108 | #ifndef DBX_REGPARM_STABS_CODE |
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109 | #define DBX_REGPARM_STABS_CODE N_RSYM |
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110 | #endif |
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111 | |
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112 | #ifndef DBX_REGPARM_STABS_LETTER |
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113 | #define DBX_REGPARM_STABS_LETTER 'P' |
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114 | #endif |
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115 | |
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116 | /* This is used for parameters passed by invisible reference in a register. */ |
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117 | #ifndef GDB_INV_REF_REGPARM_STABS_LETTER |
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118 | #define GDB_INV_REF_REGPARM_STABS_LETTER 'a' |
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119 | #endif |
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120 | |
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121 | #ifndef DBX_MEMPARM_STABS_LETTER |
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122 | #define DBX_MEMPARM_STABS_LETTER 'p' |
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123 | #endif |
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124 | |
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125 | #ifndef FILE_NAME_JOINER |
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126 | #define FILE_NAME_JOINER "/" |
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127 | #endif |
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128 | |
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129 | /* Nonzero means if the type has methods, only output debugging |
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130 | information if methods are actually written to the asm file. */ |
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131 | |
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132 | static int flag_minimal_debug = 1; |
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133 | |
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134 | /* Nonzero if we have actually used any of the GDB extensions |
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135 | to the debugging format. The idea is that we use them for the |
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136 | first time only if there's a strong reason, but once we have done that, |
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137 | we use them whenever convenient. */ |
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138 | |
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139 | static int have_used_extensions = 0; |
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140 | |
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141 | /* Number for the next N_SOL filename stabs label. The number 0 is reserved |
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142 | for the N_SO filename stabs label. */ |
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143 | |
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144 | static int source_label_number = 1; |
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145 | |
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146 | char *getpwd (); |
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147 | |
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148 | /* Typical USG systems don't have stab.h, and they also have |
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149 | no use for DBX-format debugging info. */ |
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150 | |
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151 | #if defined (DBX_DEBUGGING_INFO) || defined (XCOFF_DEBUGGING_INFO) |
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152 | |
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153 | #ifdef DEBUG_SYMS_TEXT |
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154 | #define FORCE_TEXT text_section (); |
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155 | #else |
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156 | #define FORCE_TEXT |
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157 | #endif |
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158 | |
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159 | #if defined (USG) || defined (NO_STAB_H) |
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160 | #include "gstab.h" /* If doing DBX on sysV, use our own stab.h. */ |
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161 | #else |
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162 | #include <stab.h> /* On BSD, use the system's stab.h. */ |
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163 | |
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164 | /* This is a GNU extension we need to reference in this file. */ |
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165 | #ifndef N_CATCH |
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166 | #define N_CATCH 0x54 |
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167 | #endif |
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168 | #endif /* not USG */ |
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169 | |
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170 | #ifdef __GNU_STAB__ |
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171 | #define STAB_CODE_TYPE enum __stab_debug_code |
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172 | #else |
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173 | #define STAB_CODE_TYPE int |
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174 | #endif |
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175 | |
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176 | /* 1 if PARM is passed to this function in memory. */ |
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177 | |
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178 | #define PARM_PASSED_IN_MEMORY(PARM) \ |
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179 | (GET_CODE (DECL_INCOMING_RTL (PARM)) == MEM) |
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180 | |
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181 | /* A C expression for the integer offset value of an automatic variable |
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182 | (N_LSYM) having address X (an RTX). */ |
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183 | #ifndef DEBUGGER_AUTO_OFFSET |
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184 | #define DEBUGGER_AUTO_OFFSET(X) \ |
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185 | (GET_CODE (X) == PLUS ? INTVAL (XEXP (X, 1)) : 0) |
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186 | #endif |
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187 | |
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188 | /* A C expression for the integer offset value of an argument (N_PSYM) |
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189 | having address X (an RTX). The nominal offset is OFFSET. */ |
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190 | #ifndef DEBUGGER_ARG_OFFSET |
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191 | #define DEBUGGER_ARG_OFFSET(OFFSET, X) (OFFSET) |
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192 | #endif |
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193 | |
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194 | /* Stream for writing to assembler file. */ |
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195 | |
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196 | static FILE *asmfile; |
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197 | |
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198 | /* Last source file name mentioned in a NOTE insn. */ |
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199 | |
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200 | static char *lastfile; |
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201 | |
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202 | /* Current working directory. */ |
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203 | |
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204 | static char *cwd; |
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205 | |
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206 | enum typestatus {TYPE_UNSEEN, TYPE_XREF, TYPE_DEFINED}; |
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207 | |
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208 | /* Vector recording the status of describing C data types. |
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209 | When we first notice a data type (a tree node), |
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210 | we assign it a number using next_type_number. |
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211 | That is its index in this vector. |
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212 | The vector element says whether we have yet output |
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213 | the definition of the type. TYPE_XREF says we have |
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214 | output it as a cross-reference only. */ |
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215 | |
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216 | enum typestatus *typevec; |
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217 | |
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218 | /* Number of elements of space allocated in `typevec'. */ |
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219 | |
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220 | static int typevec_len; |
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221 | |
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222 | /* In dbx output, each type gets a unique number. |
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223 | This is the number for the next type output. |
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224 | The number, once assigned, is in the TYPE_SYMTAB_ADDRESS field. */ |
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225 | |
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226 | static int next_type_number; |
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227 | |
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228 | /* In dbx output, we must assign symbol-blocks id numbers |
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229 | in the order in which their beginnings are encountered. |
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230 | We output debugging info that refers to the beginning and |
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231 | end of the ranges of code in each block |
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232 | with assembler labels LBBn and LBEn, where n is the block number. |
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233 | The labels are generated in final, which assigns numbers to the |
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234 | blocks in the same way. */ |
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235 | |
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236 | static int next_block_number; |
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237 | |
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238 | /* These variables are for dbxout_symbol to communicate to |
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239 | dbxout_finish_symbol. |
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240 | current_sym_code is the symbol-type-code, a symbol N_... define in stab.h. |
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241 | current_sym_value and current_sym_addr are two ways to address the |
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242 | value to store in the symtab entry. |
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243 | current_sym_addr if nonzero represents the value as an rtx. |
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244 | If that is zero, current_sym_value is used. This is used |
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245 | when the value is an offset (such as for auto variables, |
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246 | register variables and parms). */ |
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247 | |
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248 | static STAB_CODE_TYPE current_sym_code; |
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249 | static int current_sym_value; |
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250 | static rtx current_sym_addr; |
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251 | |
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252 | /* Number of chars of symbol-description generated so far for the |
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253 | current symbol. Used by CHARS and CONTIN. */ |
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254 | |
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255 | static int current_sym_nchars; |
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256 | |
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257 | /* Report having output N chars of the current symbol-description. */ |
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258 | |
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259 | #define CHARS(N) (current_sym_nchars += (N)) |
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260 | |
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261 | /* Break the current symbol-description, generating a continuation, |
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262 | if it has become long. */ |
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263 | |
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264 | #ifndef DBX_CONTIN_LENGTH |
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265 | #define DBX_CONTIN_LENGTH 80 |
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266 | #endif |
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267 | |
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268 | #if DBX_CONTIN_LENGTH > 0 |
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269 | #define CONTIN \ |
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270 | do {if (current_sym_nchars > DBX_CONTIN_LENGTH) dbxout_continue ();} while (0) |
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271 | #else |
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272 | #define CONTIN |
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273 | #endif |
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274 | |
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275 | void dbxout_types (); |
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276 | void dbxout_args (); |
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277 | void dbxout_symbol (); |
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278 | static void dbxout_type_name (); |
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279 | static void dbxout_type (); |
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280 | static void dbxout_typedefs (); |
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281 | static void dbxout_symbol_name (); |
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282 | static void dbxout_symbol_location (); |
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283 | static void dbxout_prepare_symbol (); |
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284 | static void dbxout_finish_symbol (); |
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285 | static void dbxout_continue (); |
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286 | static void print_int_cst_octal (); |
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287 | static void print_octal (); |
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288 | |
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289 | #if 0 /* Not clear we will actually need this. */ |
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290 | |
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291 | /* Return the absolutized filename for the given relative |
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292 | filename. Note that if that filename is already absolute, it may |
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293 | still be returned in a modified form because this routine also |
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294 | eliminates redundant slashes and single dots and eliminates double |
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295 | dots to get a shortest possible filename from the given input |
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296 | filename. The absolutization of relative filenames is made by |
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297 | assuming that the given filename is to be taken as relative to |
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298 | the first argument (cwd) or to the current directory if cwd is |
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299 | NULL. */ |
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300 | |
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301 | static char * |
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302 | abspath (rel_filename) |
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303 | char *rel_filename; |
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304 | { |
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305 | /* Setup the current working directory as needed. */ |
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306 | char *abs_buffer |
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307 | = (char *) alloca (strlen (cwd) + strlen (rel_filename) + 1); |
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308 | char *endp = abs_buffer; |
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309 | char *outp, *inp; |
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310 | char *value; |
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311 | |
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312 | /* Copy the filename (possibly preceded by the current working |
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313 | directory name) into the absolutization buffer. */ |
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314 | |
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315 | { |
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316 | char *src_p; |
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317 | |
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318 | if (rel_filename[0] != '/') |
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319 | { |
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320 | src_p = cwd; |
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321 | while (*endp++ = *src_p++) |
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322 | continue; |
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323 | *(endp-1) = '/'; /* overwrite null */ |
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324 | } |
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325 | src_p = rel_filename; |
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326 | while (*endp++ = *src_p++) |
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327 | continue; |
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328 | if (endp[-1] == '/') |
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329 | *endp = '\0'; |
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330 | |
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331 | /* Now make a copy of abs_buffer into abs_buffer, shortening the |
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332 | filename (by taking out slashes and dots) as we go. */ |
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333 | |
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334 | outp = inp = abs_buffer; |
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335 | *outp++ = *inp++; /* copy first slash */ |
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336 | for (;;) |
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337 | { |
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338 | if (!inp[0]) |
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339 | break; |
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340 | else if (inp[0] == '/' && outp[-1] == '/') |
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341 | { |
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342 | inp++; |
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343 | continue; |
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344 | } |
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345 | else if (inp[0] == '.' && outp[-1] == '/') |
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346 | { |
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347 | if (!inp[1]) |
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348 | break; |
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349 | else if (inp[1] == '/') |
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350 | { |
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351 | inp += 2; |
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352 | continue; |
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353 | } |
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354 | else if ((inp[1] == '.') && (inp[2] == 0 || inp[2] == '/')) |
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355 | { |
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356 | inp += (inp[2] == '/') ? 3 : 2; |
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357 | outp -= 2; |
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358 | while (outp >= abs_buffer && *outp != '/') |
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359 | outp--; |
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360 | if (outp < abs_buffer) |
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361 | { |
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362 | /* Catch cases like /.. where we try to backup to a |
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363 | point above the absolute root of the logical file |
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364 | system. */ |
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365 | |
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366 | fprintf (stderr, "%s: invalid file name: %s\n", |
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367 | pname, rel_filename); |
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368 | exit (1); |
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369 | } |
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370 | *++outp = '\0'; |
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371 | continue; |
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372 | } |
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373 | } |
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374 | *outp++ = *inp++; |
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375 | } |
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376 | |
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377 | /* On exit, make sure that there is a trailing null, and make sure that |
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378 | the last character of the returned string is *not* a slash. */ |
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379 | |
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380 | *outp = '\0'; |
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381 | if (outp[-1] == '/') |
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382 | *--outp = '\0'; |
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383 | |
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384 | /* Make a copy (in the heap) of the stuff left in the absolutization |
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385 | buffer and return a pointer to the copy. */ |
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386 | |
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387 | value = (char *) oballoc (strlen (abs_buffer) + 1); |
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388 | strcpy (value, abs_buffer); |
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389 | return value; |
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390 | } |
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391 | #endif /* 0 */ |
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392 | |
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393 | /* At the beginning of compilation, start writing the symbol table. |
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394 | Initialize `typevec' and output the standard data types of C. */ |
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395 | |
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396 | void |
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397 | dbxout_init (asm_file, input_file_name, syms) |
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398 | FILE *asm_file; |
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399 | char *input_file_name; |
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400 | tree syms; |
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401 | { |
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402 | char ltext_label_name[100]; |
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403 | |
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404 | asmfile = asm_file; |
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405 | |
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406 | typevec_len = 100; |
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407 | typevec = (enum typestatus *) xmalloc (typevec_len * sizeof typevec[0]); |
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408 | bzero ((char *) typevec, typevec_len * sizeof typevec[0]); |
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409 | |
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410 | /* Convert Ltext into the appropriate format for local labels in case |
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411 | the system doesn't insert underscores in front of user generated |
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412 | labels. */ |
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413 | ASM_GENERATE_INTERNAL_LABEL (ltext_label_name, "Ltext", 0); |
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414 | |
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415 | /* Put the current working directory in an N_SO symbol. */ |
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416 | #ifndef DBX_WORKING_DIRECTORY /* Only some versions of DBX want this, |
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417 | but GDB always does. */ |
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418 | if (use_gnu_debug_info_extensions) |
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419 | #endif |
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420 | { |
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421 | if (!cwd && (cwd = getpwd ()) && (!*cwd || cwd[strlen (cwd) - 1] != '/')) |
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422 | { |
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423 | char *wdslash = xmalloc (strlen (cwd) + sizeof (FILE_NAME_JOINER)); |
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424 | sprintf (wdslash, "%s%s", cwd, FILE_NAME_JOINER); |
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425 | cwd = wdslash; |
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426 | } |
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427 | if (cwd) |
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428 | { |
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429 | #ifdef DBX_OUTPUT_MAIN_SOURCE_DIRECTORY |
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430 | DBX_OUTPUT_MAIN_SOURCE_DIRECTORY (asmfile, cwd); |
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431 | #else /* no DBX_OUTPUT_MAIN_SOURCE_DIRECTORY */ |
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432 | fprintf (asmfile, "%s ", ASM_STABS_OP); |
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433 | output_quoted_string (asmfile, cwd); |
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434 | fprintf (asmfile, ",%d,0,0,%s\n", N_SO, <ext_label_name[1]); |
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435 | #endif /* no DBX_OUTPUT_MAIN_SOURCE_DIRECTORY */ |
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436 | } |
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437 | } |
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438 | |
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439 | #ifdef DBX_OUTPUT_MAIN_SOURCE_FILENAME |
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440 | /* This should NOT be DBX_OUTPUT_SOURCE_FILENAME. That |
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441 | would give us an N_SOL, and we want an N_SO. */ |
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442 | DBX_OUTPUT_MAIN_SOURCE_FILENAME (asmfile, input_file_name); |
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443 | #else /* no DBX_OUTPUT_MAIN_SOURCE_FILENAME */ |
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444 | /* We include outputting `Ltext:' here, |
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445 | because that gives you a way to override it. */ |
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446 | /* Used to put `Ltext:' before the reference, but that loses on sun 4. */ |
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447 | fprintf (asmfile, "%s ", ASM_STABS_OP); |
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448 | output_quoted_string (asmfile, input_file_name); |
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449 | fprintf (asmfile, ",%d,0,0,%s\n", |
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450 | N_SO, <ext_label_name[1]); |
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451 | text_section (); |
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452 | ASM_OUTPUT_INTERNAL_LABEL (asmfile, "Ltext", 0); |
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453 | #endif /* no DBX_OUTPUT_MAIN_SOURCE_FILENAME */ |
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454 | |
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455 | /* Possibly output something to inform GDB that this compilation was by |
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456 | GCC. It's easier for GDB to parse it when after the N_SO's. This |
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457 | is used in Solaris 2. */ |
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458 | #ifdef ASM_IDENTIFY_GCC_AFTER_SOURCE |
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459 | ASM_IDENTIFY_GCC_AFTER_SOURCE (asmfile); |
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460 | #endif |
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461 | |
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462 | lastfile = input_file_name; |
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463 | |
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464 | next_type_number = 1; |
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465 | next_block_number = 2; |
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466 | |
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467 | /* Make sure that types `int' and `char' have numbers 1 and 2. |
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468 | Definitions of other integer types will refer to those numbers. |
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469 | (Actually it should no longer matter what their numbers are. |
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470 | Also, if any types with tags have been defined, dbxout_symbol |
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471 | will output them first, so the numbers won't be 1 and 2. That |
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472 | happens in C++. So it's a good thing it should no longer matter). */ |
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473 | |
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474 | #ifdef DBX_OUTPUT_STANDARD_TYPES |
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475 | DBX_OUTPUT_STANDARD_TYPES (syms); |
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476 | #else |
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477 | dbxout_symbol (TYPE_NAME (integer_type_node), 0); |
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478 | dbxout_symbol (TYPE_NAME (char_type_node), 0); |
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479 | #endif |
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480 | |
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481 | /* Get all permanent types that have typedef names, |
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482 | and output them all, except for those already output. */ |
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483 | |
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484 | dbxout_typedefs (syms); |
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485 | } |
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486 | |
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487 | /* Output any typedef names for types described by TYPE_DECLs in SYMS, |
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488 | in the reverse order from that which is found in SYMS. */ |
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489 | |
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490 | static void |
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491 | dbxout_typedefs (syms) |
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492 | tree syms; |
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493 | { |
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494 | if (syms) |
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495 | { |
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496 | dbxout_typedefs (TREE_CHAIN (syms)); |
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497 | if (TREE_CODE (syms) == TYPE_DECL) |
---|
498 | { |
---|
499 | tree type = TREE_TYPE (syms); |
---|
500 | if (TYPE_NAME (type) |
---|
501 | && TREE_CODE (TYPE_NAME (type)) == TYPE_DECL |
---|
502 | && ! TREE_ASM_WRITTEN (TYPE_NAME (type))) |
---|
503 | dbxout_symbol (TYPE_NAME (type), 0); |
---|
504 | } |
---|
505 | } |
---|
506 | } |
---|
507 | |
---|
508 | /* Output debugging info to FILE to switch to sourcefile FILENAME. */ |
---|
509 | |
---|
510 | void |
---|
511 | dbxout_source_file (file, filename) |
---|
512 | FILE *file; |
---|
513 | char *filename; |
---|
514 | { |
---|
515 | char ltext_label_name[100]; |
---|
516 | |
---|
517 | if (filename && (lastfile == 0 || strcmp (filename, lastfile))) |
---|
518 | { |
---|
519 | #ifdef DBX_OUTPUT_SOURCE_FILENAME |
---|
520 | DBX_OUTPUT_SOURCE_FILENAME (file, filename); |
---|
521 | #else |
---|
522 | ASM_GENERATE_INTERNAL_LABEL (ltext_label_name, "Ltext", |
---|
523 | source_label_number); |
---|
524 | fprintf (file, "%s ", ASM_STABS_OP); |
---|
525 | output_quoted_string (file, filename); |
---|
526 | fprintf (file, ",%d,0,0,%s\n", N_SOL, <ext_label_name[1]); |
---|
527 | if (current_function_decl != NULL_TREE |
---|
528 | && DECL_SECTION_NAME (current_function_decl) != NULL_TREE) |
---|
529 | ; /* Don't change section amid function. */ |
---|
530 | else |
---|
531 | text_section (); |
---|
532 | ASM_OUTPUT_INTERNAL_LABEL (file, "Ltext", source_label_number); |
---|
533 | source_label_number++; |
---|
534 | #endif |
---|
535 | lastfile = filename; |
---|
536 | } |
---|
537 | } |
---|
538 | |
---|
539 | /* Output a line number symbol entry into output stream FILE, |
---|
540 | for source file FILENAME and line number LINENO. */ |
---|
541 | |
---|
542 | void |
---|
543 | dbxout_source_line (file, filename, lineno) |
---|
544 | FILE *file; |
---|
545 | char *filename; |
---|
546 | int lineno; |
---|
547 | { |
---|
548 | dbxout_source_file (file, filename); |
---|
549 | |
---|
550 | #ifdef ASM_OUTPUT_SOURCE_LINE |
---|
551 | ASM_OUTPUT_SOURCE_LINE (file, lineno); |
---|
552 | #else |
---|
553 | fprintf (file, "\t%s %d,0,%d\n", ASM_STABD_OP, N_SLINE, lineno); |
---|
554 | #endif |
---|
555 | } |
---|
556 | |
---|
557 | /* At the end of compilation, finish writing the symbol table. |
---|
558 | Unless you define DBX_OUTPUT_MAIN_SOURCE_FILE_END, the default is |
---|
559 | to do nothing. */ |
---|
560 | |
---|
561 | void |
---|
562 | dbxout_finish (file, filename) |
---|
563 | FILE *file; |
---|
564 | char *filename; |
---|
565 | { |
---|
566 | #ifdef DBX_OUTPUT_MAIN_SOURCE_FILE_END |
---|
567 | DBX_OUTPUT_MAIN_SOURCE_FILE_END (file, filename); |
---|
568 | #endif /* DBX_OUTPUT_MAIN_SOURCE_FILE_END */ |
---|
569 | } |
---|
570 | |
---|
571 | /* Continue a symbol-description that gets too big. |
---|
572 | End one symbol table entry with a double-backslash |
---|
573 | and start a new one, eventually producing something like |
---|
574 | .stabs "start......\\",code,0,value |
---|
575 | .stabs "...rest",code,0,value */ |
---|
576 | |
---|
577 | static void |
---|
578 | dbxout_continue () |
---|
579 | { |
---|
580 | #ifdef DBX_CONTIN_CHAR |
---|
581 | fprintf (asmfile, "%c", DBX_CONTIN_CHAR); |
---|
582 | #else |
---|
583 | fprintf (asmfile, "\\\\"); |
---|
584 | #endif |
---|
585 | dbxout_finish_symbol (NULL_TREE); |
---|
586 | fprintf (asmfile, "%s \"", ASM_STABS_OP); |
---|
587 | current_sym_nchars = 0; |
---|
588 | } |
---|
589 | |
---|
590 | /* Subroutine of `dbxout_type'. Output the type fields of TYPE. |
---|
591 | This must be a separate function because anonymous unions require |
---|
592 | recursive calls. */ |
---|
593 | |
---|
594 | static void |
---|
595 | dbxout_type_fields (type) |
---|
596 | tree type; |
---|
597 | { |
---|
598 | tree tem; |
---|
599 | /* Output the name, type, position (in bits), size (in bits) of each |
---|
600 | field. */ |
---|
601 | for (tem = TYPE_FIELDS (type); tem; tem = TREE_CHAIN (tem)) |
---|
602 | { |
---|
603 | /* Omit here local type decls until we know how to support them. */ |
---|
604 | if (TREE_CODE (tem) == TYPE_DECL) |
---|
605 | continue; |
---|
606 | /* Omit fields whose position or size are variable. */ |
---|
607 | else if (TREE_CODE (tem) == FIELD_DECL |
---|
608 | && (TREE_CODE (DECL_FIELD_BITPOS (tem)) != INTEGER_CST |
---|
609 | || TREE_CODE (DECL_SIZE (tem)) != INTEGER_CST)) |
---|
610 | continue; |
---|
611 | /* Omit here the nameless fields that are used to skip bits. */ |
---|
612 | else if (TREE_CODE (tem) != CONST_DECL) |
---|
613 | { |
---|
614 | /* Continue the line if necessary, |
---|
615 | but not before the first field. */ |
---|
616 | if (tem != TYPE_FIELDS (type)) |
---|
617 | CONTIN; |
---|
618 | |
---|
619 | if (use_gnu_debug_info_extensions |
---|
620 | && flag_minimal_debug |
---|
621 | && TREE_CODE (tem) == FIELD_DECL |
---|
622 | && DECL_VIRTUAL_P (tem) |
---|
623 | && DECL_ASSEMBLER_NAME (tem)) |
---|
624 | { |
---|
625 | have_used_extensions = 1; |
---|
626 | CHARS (3 + IDENTIFIER_LENGTH (DECL_ASSEMBLER_NAME (tem))); |
---|
627 | fputs (IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (tem)), asmfile); |
---|
628 | dbxout_type (DECL_FCONTEXT (tem), 0, 0); |
---|
629 | fprintf (asmfile, ":"); |
---|
630 | dbxout_type (TREE_TYPE (tem), 0, 0); |
---|
631 | fprintf (asmfile, ",%d;", |
---|
632 | TREE_INT_CST_LOW (DECL_FIELD_BITPOS (tem))); |
---|
633 | continue; |
---|
634 | } |
---|
635 | |
---|
636 | if (DECL_NAME (tem)) |
---|
637 | { |
---|
638 | fprintf (asmfile, "%s:", IDENTIFIER_POINTER (DECL_NAME (tem))); |
---|
639 | CHARS (2 + IDENTIFIER_LENGTH (DECL_NAME (tem))); |
---|
640 | } |
---|
641 | else |
---|
642 | { |
---|
643 | fprintf (asmfile, ":"); |
---|
644 | CHARS (2); |
---|
645 | } |
---|
646 | |
---|
647 | if (use_gnu_debug_info_extensions |
---|
648 | && (TREE_PRIVATE (tem) || TREE_PROTECTED (tem) |
---|
649 | || TREE_CODE (tem) != FIELD_DECL)) |
---|
650 | { |
---|
651 | have_used_extensions = 1; |
---|
652 | putc ('/', asmfile); |
---|
653 | putc ((TREE_PRIVATE (tem) ? '0' |
---|
654 | : TREE_PROTECTED (tem) ? '1' : '2'), |
---|
655 | asmfile); |
---|
656 | CHARS (2); |
---|
657 | } |
---|
658 | |
---|
659 | dbxout_type ((TREE_CODE (tem) == FIELD_DECL |
---|
660 | && DECL_BIT_FIELD_TYPE (tem)) |
---|
661 | ? DECL_BIT_FIELD_TYPE (tem) |
---|
662 | : TREE_TYPE (tem), 0, 0); |
---|
663 | |
---|
664 | if (TREE_CODE (tem) == VAR_DECL) |
---|
665 | { |
---|
666 | if (TREE_STATIC (tem) && use_gnu_debug_info_extensions) |
---|
667 | { |
---|
668 | char *name = IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (tem)); |
---|
669 | have_used_extensions = 1; |
---|
670 | fprintf (asmfile, ":%s;", name); |
---|
671 | CHARS (strlen (name)); |
---|
672 | } |
---|
673 | else |
---|
674 | { |
---|
675 | /* If TEM is non-static, GDB won't understand it. */ |
---|
676 | fprintf (asmfile, ",0,0;"); |
---|
677 | } |
---|
678 | } |
---|
679 | else if (TREE_CODE (DECL_FIELD_BITPOS (tem)) == INTEGER_CST) |
---|
680 | { |
---|
681 | fprintf (asmfile, ",%d,%d;", |
---|
682 | TREE_INT_CST_LOW (DECL_FIELD_BITPOS (tem)), |
---|
683 | TREE_INT_CST_LOW (DECL_SIZE (tem))); |
---|
684 | } |
---|
685 | CHARS (23); |
---|
686 | } |
---|
687 | } |
---|
688 | } |
---|
689 | |
---|
690 | /* Subroutine of `dbxout_type_methods'. Output debug info about the |
---|
691 | method described DECL. DEBUG_NAME is an encoding of the method's |
---|
692 | type signature. ??? We may be able to do without DEBUG_NAME altogether |
---|
693 | now. */ |
---|
694 | |
---|
695 | static void |
---|
696 | dbxout_type_method_1 (decl, debug_name) |
---|
697 | tree decl; |
---|
698 | char *debug_name; |
---|
699 | { |
---|
700 | char c1 = 'A', c2; |
---|
701 | |
---|
702 | if (TREE_CODE (TREE_TYPE (decl)) == FUNCTION_TYPE) |
---|
703 | c2 = '?'; |
---|
704 | else /* it's a METHOD_TYPE. */ |
---|
705 | { |
---|
706 | tree firstarg = TREE_VALUE (TYPE_ARG_TYPES (TREE_TYPE (decl))); |
---|
707 | /* A for normal functions. |
---|
708 | B for `const' member functions. |
---|
709 | C for `volatile' member functions. |
---|
710 | D for `const volatile' member functions. */ |
---|
711 | if (TYPE_READONLY (TREE_TYPE (firstarg))) |
---|
712 | c1 += 1; |
---|
713 | if (TYPE_VOLATILE (TREE_TYPE (firstarg))) |
---|
714 | c1 += 2; |
---|
715 | |
---|
716 | if (DECL_VINDEX (decl)) |
---|
717 | c2 = '*'; |
---|
718 | else |
---|
719 | c2 = '.'; |
---|
720 | } |
---|
721 | |
---|
722 | fprintf (asmfile, ":%s;%c%c%c", debug_name, |
---|
723 | TREE_PRIVATE (decl) ? '0' : TREE_PROTECTED (decl) ? '1' : '2', c1, c2); |
---|
724 | CHARS (IDENTIFIER_LENGTH (DECL_ASSEMBLER_NAME (decl)) + 6 |
---|
725 | - (debug_name - IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (decl)))); |
---|
726 | if (DECL_VINDEX (decl)) |
---|
727 | { |
---|
728 | fprintf (asmfile, "%d;", |
---|
729 | TREE_INT_CST_LOW (DECL_VINDEX (decl))); |
---|
730 | dbxout_type (DECL_CONTEXT (decl), 0, 0); |
---|
731 | fprintf (asmfile, ";"); |
---|
732 | CHARS (8); |
---|
733 | } |
---|
734 | } |
---|
735 | |
---|
736 | /* Subroutine of `dbxout_type'. Output debug info about the methods defined |
---|
737 | in TYPE. */ |
---|
738 | |
---|
739 | static void |
---|
740 | dbxout_type_methods (type) |
---|
741 | register tree type; |
---|
742 | { |
---|
743 | /* C++: put out the method names and their parameter lists */ |
---|
744 | tree methods = TYPE_METHODS (type); |
---|
745 | tree type_encoding; |
---|
746 | register tree fndecl; |
---|
747 | register tree last; |
---|
748 | char formatted_type_identifier_length[16]; |
---|
749 | register int type_identifier_length; |
---|
750 | |
---|
751 | if (methods == NULL_TREE) |
---|
752 | return; |
---|
753 | |
---|
754 | type_encoding = DECL_NAME (TYPE_NAME (type)); |
---|
755 | |
---|
756 | #if 0 |
---|
757 | /* C++: Template classes break some assumptions made by this code about |
---|
758 | the class names, constructor names, and encodings for assembler |
---|
759 | label names. For now, disable output of dbx info for them. */ |
---|
760 | { |
---|
761 | char *ptr = IDENTIFIER_POINTER (type_encoding); |
---|
762 | /* This should use index. (mrs) */ |
---|
763 | while (*ptr && *ptr != '<') ptr++; |
---|
764 | if (*ptr != 0) |
---|
765 | { |
---|
766 | static int warned; |
---|
767 | if (!warned) |
---|
768 | { |
---|
769 | warned = 1; |
---|
770 | #ifdef HAVE_TEMPLATES |
---|
771 | if (warn_template_debugging) |
---|
772 | warning ("dbx info for template class methods not yet supported"); |
---|
773 | #endif |
---|
774 | } |
---|
775 | return; |
---|
776 | } |
---|
777 | } |
---|
778 | #endif |
---|
779 | |
---|
780 | type_identifier_length = IDENTIFIER_LENGTH (type_encoding); |
---|
781 | |
---|
782 | sprintf(formatted_type_identifier_length, "%d", type_identifier_length); |
---|
783 | |
---|
784 | if (TREE_CODE (methods) == FUNCTION_DECL) |
---|
785 | fndecl = methods; |
---|
786 | else if (TREE_VEC_ELT (methods, 0) != NULL_TREE) |
---|
787 | fndecl = TREE_VEC_ELT (methods, 0); |
---|
788 | else |
---|
789 | fndecl = TREE_VEC_ELT (methods, 1); |
---|
790 | |
---|
791 | while (fndecl) |
---|
792 | { |
---|
793 | tree name = DECL_NAME (fndecl); |
---|
794 | int need_prefix = 1; |
---|
795 | |
---|
796 | /* Group together all the methods for the same operation. |
---|
797 | These differ in the types of the arguments. */ |
---|
798 | for (last = NULL_TREE; |
---|
799 | fndecl && (last == NULL_TREE || DECL_NAME (fndecl) == DECL_NAME (last)); |
---|
800 | fndecl = TREE_CHAIN (fndecl)) |
---|
801 | /* Output the name of the field (after overloading), as |
---|
802 | well as the name of the field before overloading, along |
---|
803 | with its parameter list */ |
---|
804 | { |
---|
805 | /* This is the "mangled" name of the method. |
---|
806 | It encodes the argument types. */ |
---|
807 | char *debug_name = IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (fndecl)); |
---|
808 | int destructor = 0; |
---|
809 | |
---|
810 | CONTIN; |
---|
811 | |
---|
812 | last = fndecl; |
---|
813 | |
---|
814 | if (DECL_IGNORED_P (fndecl)) |
---|
815 | continue; |
---|
816 | |
---|
817 | if (flag_minimal_debug) |
---|
818 | { |
---|
819 | /* Detect ordinary methods because their mangled names |
---|
820 | start with the operation name. */ |
---|
821 | if (!strncmp (IDENTIFIER_POINTER (name), debug_name, |
---|
822 | IDENTIFIER_LENGTH (name))) |
---|
823 | { |
---|
824 | debug_name += IDENTIFIER_LENGTH (name); |
---|
825 | if (debug_name[0] == '_' && debug_name[1] == '_') |
---|
826 | { |
---|
827 | char *method_name = debug_name + 2; |
---|
828 | char *length_ptr = formatted_type_identifier_length; |
---|
829 | /* Get past const and volatile qualifiers. */ |
---|
830 | while (*method_name == 'C' || *method_name == 'V') |
---|
831 | method_name++; |
---|
832 | /* Skip digits for length of type_encoding. */ |
---|
833 | while (*method_name == *length_ptr && *length_ptr) |
---|
834 | length_ptr++, method_name++; |
---|
835 | if (! strncmp (method_name, |
---|
836 | IDENTIFIER_POINTER (type_encoding), |
---|
837 | type_identifier_length)) |
---|
838 | method_name += type_identifier_length; |
---|
839 | debug_name = method_name; |
---|
840 | } |
---|
841 | } |
---|
842 | /* Detect constructors by their style of name mangling. */ |
---|
843 | else if (debug_name[0] == '_' && debug_name[1] == '_') |
---|
844 | { |
---|
845 | char *ctor_name = debug_name + 2; |
---|
846 | char *length_ptr = formatted_type_identifier_length; |
---|
847 | while (*ctor_name == 'C' || *ctor_name == 'V') |
---|
848 | ctor_name++; |
---|
849 | /* Skip digits for length of type_encoding. */ |
---|
850 | while (*ctor_name == *length_ptr && *length_ptr) |
---|
851 | length_ptr++, ctor_name++; |
---|
852 | if (!strncmp (IDENTIFIER_POINTER (type_encoding), ctor_name, |
---|
853 | type_identifier_length)) |
---|
854 | debug_name = ctor_name + type_identifier_length; |
---|
855 | } |
---|
856 | /* The other alternative is a destructor. */ |
---|
857 | else |
---|
858 | destructor = 1; |
---|
859 | |
---|
860 | /* Output the operation name just once, for the first method |
---|
861 | that we output. */ |
---|
862 | if (need_prefix) |
---|
863 | { |
---|
864 | fprintf (asmfile, "%s::", IDENTIFIER_POINTER (name)); |
---|
865 | CHARS (IDENTIFIER_LENGTH (name) + 2); |
---|
866 | need_prefix = 0; |
---|
867 | } |
---|
868 | } |
---|
869 | |
---|
870 | dbxout_type (TREE_TYPE (fndecl), 0, destructor); |
---|
871 | |
---|
872 | dbxout_type_method_1 (fndecl, debug_name); |
---|
873 | } |
---|
874 | if (!need_prefix) |
---|
875 | { |
---|
876 | putc (';', asmfile); |
---|
877 | CHARS (1); |
---|
878 | } |
---|
879 | } |
---|
880 | } |
---|
881 | |
---|
882 | /* Emit a "range" type specification, which has the form: |
---|
883 | "r<index type>;<lower bound>;<upper bound>;". |
---|
884 | TYPE is an INTEGER_TYPE. */ |
---|
885 | |
---|
886 | static void |
---|
887 | dbxout_range_type (type) |
---|
888 | tree type; |
---|
889 | { |
---|
890 | fprintf (asmfile, "r"); |
---|
891 | if (TREE_TYPE (type)) |
---|
892 | dbxout_type (TREE_TYPE (type), 0, 0); |
---|
893 | else if (TREE_CODE (type) != INTEGER_TYPE) |
---|
894 | dbxout_type (type, 0, 0); /* E.g. Pascal's ARRAY [BOOLEAN] of INTEGER */ |
---|
895 | else |
---|
896 | { |
---|
897 | /* This used to say `r1' and we used to take care |
---|
898 | to make sure that `int' was type number 1. */ |
---|
899 | fprintf (asmfile, "%d", TYPE_SYMTAB_ADDRESS (integer_type_node)); |
---|
900 | } |
---|
901 | if (TREE_CODE (TYPE_MIN_VALUE (type)) == INTEGER_CST) |
---|
902 | fprintf (asmfile, ";%d", |
---|
903 | TREE_INT_CST_LOW (TYPE_MIN_VALUE (type))); |
---|
904 | else |
---|
905 | fprintf (asmfile, ";0"); |
---|
906 | if (TREE_CODE (TYPE_MAX_VALUE (type)) == INTEGER_CST) |
---|
907 | fprintf (asmfile, ";%d;", |
---|
908 | TREE_INT_CST_LOW (TYPE_MAX_VALUE (type))); |
---|
909 | else |
---|
910 | fprintf (asmfile, ";-1;"); |
---|
911 | } |
---|
912 | |
---|
913 | /* Output a reference to a type. If the type has not yet been |
---|
914 | described in the dbx output, output its definition now. |
---|
915 | For a type already defined, just refer to its definition |
---|
916 | using the type number. |
---|
917 | |
---|
918 | If FULL is nonzero, and the type has been described only with |
---|
919 | a forward-reference, output the definition now. |
---|
920 | If FULL is zero in this case, just refer to the forward-reference |
---|
921 | using the number previously allocated. |
---|
922 | |
---|
923 | If SHOW_ARG_TYPES is nonzero, we output a description of the argument |
---|
924 | types for a METHOD_TYPE. */ |
---|
925 | |
---|
926 | static void |
---|
927 | dbxout_type (type, full, show_arg_types) |
---|
928 | tree type; |
---|
929 | int full; |
---|
930 | int show_arg_types; |
---|
931 | { |
---|
932 | register tree tem; |
---|
933 | static int anonymous_type_number = 0; |
---|
934 | |
---|
935 | /* If there was an input error and we don't really have a type, |
---|
936 | avoid crashing and write something that is at least valid |
---|
937 | by assuming `int'. */ |
---|
938 | if (type == error_mark_node) |
---|
939 | type = integer_type_node; |
---|
940 | else |
---|
941 | { |
---|
942 | type = TYPE_MAIN_VARIANT (type); |
---|
943 | if (TYPE_NAME (type) |
---|
944 | && TREE_CODE (TYPE_NAME (type)) == TYPE_DECL |
---|
945 | && TYPE_DECL_SUPPRESS_DEBUG (TYPE_NAME (type))) |
---|
946 | full = 0; |
---|
947 | } |
---|
948 | |
---|
949 | if (TYPE_SYMTAB_ADDRESS (type) == 0) |
---|
950 | { |
---|
951 | /* Type has no dbx number assigned. Assign next available number. */ |
---|
952 | TYPE_SYMTAB_ADDRESS (type) = next_type_number++; |
---|
953 | |
---|
954 | /* Make sure type vector is long enough to record about this type. */ |
---|
955 | |
---|
956 | if (next_type_number == typevec_len) |
---|
957 | { |
---|
958 | typevec = |
---|
959 | (enum typestatus *) xrealloc (typevec, |
---|
960 | typevec_len * 2 * sizeof typevec[0]); |
---|
961 | bzero ((char *) (typevec + typevec_len), |
---|
962 | typevec_len * sizeof typevec[0]); |
---|
963 | typevec_len *= 2; |
---|
964 | } |
---|
965 | } |
---|
966 | |
---|
967 | /* Output the number of this type, to refer to it. */ |
---|
968 | fprintf (asmfile, "%d", TYPE_SYMTAB_ADDRESS (type)); |
---|
969 | CHARS (3); |
---|
970 | |
---|
971 | #ifdef DBX_TYPE_DEFINED |
---|
972 | if (DBX_TYPE_DEFINED (type)) |
---|
973 | return; |
---|
974 | #endif |
---|
975 | |
---|
976 | /* If this type's definition has been output or is now being output, |
---|
977 | that is all. */ |
---|
978 | |
---|
979 | switch (typevec[TYPE_SYMTAB_ADDRESS (type)]) |
---|
980 | { |
---|
981 | case TYPE_UNSEEN: |
---|
982 | break; |
---|
983 | case TYPE_XREF: |
---|
984 | /* If we have already had a cross reference, |
---|
985 | and either that's all we want or that's the best we could do, |
---|
986 | don't repeat the cross reference. |
---|
987 | Sun dbx crashes if we do. */ |
---|
988 | if (! full || TYPE_SIZE (type) == 0 |
---|
989 | /* No way in DBX fmt to describe a variable size. */ |
---|
990 | || TREE_CODE (TYPE_SIZE (type)) != INTEGER_CST) |
---|
991 | return; |
---|
992 | break; |
---|
993 | case TYPE_DEFINED: |
---|
994 | return; |
---|
995 | } |
---|
996 | |
---|
997 | #ifdef DBX_NO_XREFS |
---|
998 | /* For systems where dbx output does not allow the `=xsNAME:' syntax, |
---|
999 | leave the type-number completely undefined rather than output |
---|
1000 | a cross-reference. If we have already used GNU debug info extensions, |
---|
1001 | then it is OK to output a cross reference. This is necessary to get |
---|
1002 | proper C++ debug output. */ |
---|
1003 | if ((TREE_CODE (type) == RECORD_TYPE || TREE_CODE (type) == UNION_TYPE |
---|
1004 | || TREE_CODE (type) == QUAL_UNION_TYPE |
---|
1005 | || TREE_CODE (type) == ENUMERAL_TYPE) |
---|
1006 | && ! use_gnu_debug_info_extensions) |
---|
1007 | /* We must use the same test here as we use twice below when deciding |
---|
1008 | whether to emit a cross-reference. */ |
---|
1009 | if ((TYPE_NAME (type) != 0 |
---|
1010 | && ! (TREE_CODE (TYPE_NAME (type)) == TYPE_DECL |
---|
1011 | && DECL_IGNORED_P (TYPE_NAME (type))) |
---|
1012 | && !full) |
---|
1013 | || TYPE_SIZE (type) == 0 |
---|
1014 | /* No way in DBX fmt to describe a variable size. */ |
---|
1015 | || TREE_CODE (TYPE_SIZE (type)) != INTEGER_CST) |
---|
1016 | { |
---|
1017 | typevec[TYPE_SYMTAB_ADDRESS (type)] = TYPE_XREF; |
---|
1018 | return; |
---|
1019 | } |
---|
1020 | #endif |
---|
1021 | |
---|
1022 | /* Output a definition now. */ |
---|
1023 | |
---|
1024 | fprintf (asmfile, "="); |
---|
1025 | CHARS (1); |
---|
1026 | |
---|
1027 | /* Mark it as defined, so that if it is self-referent |
---|
1028 | we will not get into an infinite recursion of definitions. */ |
---|
1029 | |
---|
1030 | typevec[TYPE_SYMTAB_ADDRESS (type)] = TYPE_DEFINED; |
---|
1031 | |
---|
1032 | switch (TREE_CODE (type)) |
---|
1033 | { |
---|
1034 | case VOID_TYPE: |
---|
1035 | case LANG_TYPE: |
---|
1036 | /* For a void type, just define it as itself; ie, "5=5". |
---|
1037 | This makes us consider it defined |
---|
1038 | without saying what it is. The debugger will make it |
---|
1039 | a void type when the reference is seen, and nothing will |
---|
1040 | ever override that default. */ |
---|
1041 | fprintf (asmfile, "%d", TYPE_SYMTAB_ADDRESS (type)); |
---|
1042 | CHARS (3); |
---|
1043 | break; |
---|
1044 | |
---|
1045 | case INTEGER_TYPE: |
---|
1046 | if (type == char_type_node && ! TREE_UNSIGNED (type)) |
---|
1047 | /* Output the type `char' as a subrange of itself! |
---|
1048 | I don't understand this definition, just copied it |
---|
1049 | from the output of pcc. |
---|
1050 | This used to use `r2' explicitly and we used to |
---|
1051 | take care to make sure that `char' was type number 2. */ |
---|
1052 | fprintf (asmfile, "r%d;0;127;", TYPE_SYMTAB_ADDRESS (type)); |
---|
1053 | else if (use_gnu_debug_info_extensions |
---|
1054 | && (TYPE_PRECISION (type) > TYPE_PRECISION (integer_type_node) |
---|
1055 | || TYPE_PRECISION (type) > HOST_BITS_PER_WIDE_INT)) |
---|
1056 | { |
---|
1057 | /* This used to say `r1' and we used to take care |
---|
1058 | to make sure that `int' was type number 1. */ |
---|
1059 | fprintf (asmfile, "r%d;", TYPE_SYMTAB_ADDRESS (integer_type_node)); |
---|
1060 | print_int_cst_octal (TYPE_MIN_VALUE (type)); |
---|
1061 | fprintf (asmfile, ";"); |
---|
1062 | print_int_cst_octal (TYPE_MAX_VALUE (type)); |
---|
1063 | fprintf (asmfile, ";"); |
---|
1064 | } |
---|
1065 | else /* Output other integer types as subranges of `int'. */ |
---|
1066 | dbxout_range_type (type); |
---|
1067 | CHARS (25); |
---|
1068 | break; |
---|
1069 | |
---|
1070 | case REAL_TYPE: |
---|
1071 | /* This used to say `r1' and we used to take care |
---|
1072 | to make sure that `int' was type number 1. */ |
---|
1073 | fprintf (asmfile, "r%d;%d;0;", TYPE_SYMTAB_ADDRESS (integer_type_node), |
---|
1074 | int_size_in_bytes (type)); |
---|
1075 | CHARS (16); |
---|
1076 | break; |
---|
1077 | |
---|
1078 | case CHAR_TYPE: |
---|
1079 | if (use_gnu_debug_info_extensions) |
---|
1080 | fprintf (asmfile, "@s%d;-20;", |
---|
1081 | BITS_PER_UNIT * int_size_in_bytes (type)); |
---|
1082 | else |
---|
1083 | /* Output the type `char' as a subrange of itself. |
---|
1084 | That is what pcc seems to do. */ |
---|
1085 | fprintf (asmfile, "r%d;0;%d;", TYPE_SYMTAB_ADDRESS (char_type_node), |
---|
1086 | TREE_UNSIGNED (type) ? 255 : 127); |
---|
1087 | CHARS (9); |
---|
1088 | break; |
---|
1089 | |
---|
1090 | case BOOLEAN_TYPE: |
---|
1091 | if (use_gnu_debug_info_extensions) |
---|
1092 | fprintf (asmfile, "@s%d;-16;", |
---|
1093 | BITS_PER_UNIT * int_size_in_bytes (type)); |
---|
1094 | else /* Define as enumeral type (False, True) */ |
---|
1095 | fprintf (asmfile, "eFalse:0,True:1,;"); |
---|
1096 | CHARS (17); |
---|
1097 | break; |
---|
1098 | |
---|
1099 | case FILE_TYPE: |
---|
1100 | putc ('d', asmfile); |
---|
1101 | CHARS (1); |
---|
1102 | dbxout_type (TREE_TYPE (type), 0, 0); |
---|
1103 | break; |
---|
1104 | |
---|
1105 | case COMPLEX_TYPE: |
---|
1106 | /* Differs from the REAL_TYPE by its new data type number */ |
---|
1107 | |
---|
1108 | if (TREE_CODE (TREE_TYPE (type)) == REAL_TYPE) |
---|
1109 | { |
---|
1110 | fprintf (asmfile, "r%d;%d;0;", |
---|
1111 | TYPE_SYMTAB_ADDRESS (type), |
---|
1112 | int_size_in_bytes (TREE_TYPE (type))); |
---|
1113 | CHARS (15); /* The number is probably incorrect here. */ |
---|
1114 | } |
---|
1115 | else |
---|
1116 | { |
---|
1117 | /* Output a complex integer type as a structure, |
---|
1118 | pending some other way to do it. */ |
---|
1119 | fprintf (asmfile, "s%d", int_size_in_bytes (type)); |
---|
1120 | |
---|
1121 | fprintf (asmfile, "real:"); |
---|
1122 | CHARS (10); |
---|
1123 | dbxout_type (TREE_TYPE (type), 0, 0); |
---|
1124 | fprintf (asmfile, ",%d,%d;", |
---|
1125 | 0, TYPE_PRECISION (TREE_TYPE (type))); |
---|
1126 | CHARS (8); |
---|
1127 | fprintf (asmfile, "imag:"); |
---|
1128 | CHARS (5); |
---|
1129 | dbxout_type (TREE_TYPE (type), 0, 0); |
---|
1130 | fprintf (asmfile, ",%d,%d;;", |
---|
1131 | TYPE_PRECISION (TREE_TYPE (type)), |
---|
1132 | TYPE_PRECISION (TREE_TYPE (type))); |
---|
1133 | CHARS (9); |
---|
1134 | } |
---|
1135 | break; |
---|
1136 | |
---|
1137 | case SET_TYPE: |
---|
1138 | if (use_gnu_debug_info_extensions) |
---|
1139 | { |
---|
1140 | have_used_extensions = 1; |
---|
1141 | fprintf (asmfile, "@s%d;", |
---|
1142 | BITS_PER_UNIT * int_size_in_bytes (type)); |
---|
1143 | /* Check if a bitstring type, which in Chill is |
---|
1144 | different from a [power]set. */ |
---|
1145 | if (TYPE_STRING_FLAG (type)) |
---|
1146 | fprintf (asmfile, "@S;"); |
---|
1147 | } |
---|
1148 | putc ('S', asmfile); |
---|
1149 | CHARS (1); |
---|
1150 | dbxout_type (TYPE_DOMAIN (type), 0, 0); |
---|
1151 | break; |
---|
1152 | |
---|
1153 | case ARRAY_TYPE: |
---|
1154 | /* Output "a" followed by a range type definition |
---|
1155 | for the index type of the array |
---|
1156 | followed by a reference to the target-type. |
---|
1157 | ar1;0;N;M for a C array of type M and size N+1. */ |
---|
1158 | /* Check if a character string type, which in Chill is |
---|
1159 | different from an array of characters. */ |
---|
1160 | if (TYPE_STRING_FLAG (type) && use_gnu_debug_info_extensions) |
---|
1161 | { |
---|
1162 | have_used_extensions = 1; |
---|
1163 | fprintf (asmfile, "@S;"); |
---|
1164 | } |
---|
1165 | tem = TYPE_DOMAIN (type); |
---|
1166 | if (tem == NULL) |
---|
1167 | fprintf (asmfile, "ar%d;0;-1;", |
---|
1168 | TYPE_SYMTAB_ADDRESS (integer_type_node)); |
---|
1169 | else |
---|
1170 | { |
---|
1171 | fprintf (asmfile, "a"); |
---|
1172 | dbxout_range_type (tem); |
---|
1173 | } |
---|
1174 | CHARS (17); |
---|
1175 | dbxout_type (TREE_TYPE (type), 0, 0); |
---|
1176 | break; |
---|
1177 | |
---|
1178 | case RECORD_TYPE: |
---|
1179 | case UNION_TYPE: |
---|
1180 | case QUAL_UNION_TYPE: |
---|
1181 | { |
---|
1182 | int i, n_baseclasses = 0; |
---|
1183 | |
---|
1184 | if (TYPE_BINFO (type) != 0 && TYPE_BINFO_BASETYPES (type) != 0) |
---|
1185 | n_baseclasses = TREE_VEC_LENGTH (TYPE_BINFO_BASETYPES (type)); |
---|
1186 | |
---|
1187 | /* Output a structure type. We must use the same test here as we |
---|
1188 | use in the DBX_NO_XREFS case above. */ |
---|
1189 | if ((TYPE_NAME (type) != 0 |
---|
1190 | && ! (TREE_CODE (TYPE_NAME (type)) == TYPE_DECL |
---|
1191 | && DECL_IGNORED_P (TYPE_NAME (type))) |
---|
1192 | && !full) |
---|
1193 | || TYPE_SIZE (type) == 0 |
---|
1194 | /* No way in DBX fmt to describe a variable size. */ |
---|
1195 | || TREE_CODE (TYPE_SIZE (type)) != INTEGER_CST) |
---|
1196 | { |
---|
1197 | /* If the type is just a cross reference, output one |
---|
1198 | and mark the type as partially described. |
---|
1199 | If it later becomes defined, we will output |
---|
1200 | its real definition. |
---|
1201 | If the type has a name, don't nest its definition within |
---|
1202 | another type's definition; instead, output an xref |
---|
1203 | and let the definition come when the name is defined. */ |
---|
1204 | fprintf (asmfile, (TREE_CODE (type) == RECORD_TYPE) ? "xs" : "xu"); |
---|
1205 | CHARS (3); |
---|
1206 | #if 0 /* This assertion is legitimately false in C++. */ |
---|
1207 | /* We shouldn't be outputting a reference to a type before its |
---|
1208 | definition unless the type has a tag name. |
---|
1209 | A typedef name without a tag name should be impossible. */ |
---|
1210 | if (TREE_CODE (TYPE_NAME (type)) != IDENTIFIER_NODE) |
---|
1211 | abort (); |
---|
1212 | #endif |
---|
1213 | if (TYPE_NAME (type) != 0) |
---|
1214 | dbxout_type_name (type); |
---|
1215 | else |
---|
1216 | fprintf (asmfile, "$$%d", anonymous_type_number++); |
---|
1217 | fprintf (asmfile, ":"); |
---|
1218 | typevec[TYPE_SYMTAB_ADDRESS (type)] = TYPE_XREF; |
---|
1219 | break; |
---|
1220 | } |
---|
1221 | |
---|
1222 | /* Identify record or union, and print its size. */ |
---|
1223 | fprintf (asmfile, (TREE_CODE (type) == RECORD_TYPE) ? "s%d" : "u%d", |
---|
1224 | int_size_in_bytes (type)); |
---|
1225 | |
---|
1226 | if (use_gnu_debug_info_extensions) |
---|
1227 | { |
---|
1228 | if (n_baseclasses) |
---|
1229 | { |
---|
1230 | have_used_extensions = 1; |
---|
1231 | fprintf (asmfile, "!%d,", n_baseclasses); |
---|
1232 | CHARS (8); |
---|
1233 | } |
---|
1234 | } |
---|
1235 | for (i = 0; i < n_baseclasses; i++) |
---|
1236 | { |
---|
1237 | tree child = TREE_VEC_ELT (BINFO_BASETYPES (TYPE_BINFO (type)), i); |
---|
1238 | if (use_gnu_debug_info_extensions) |
---|
1239 | { |
---|
1240 | have_used_extensions = 1; |
---|
1241 | putc (TREE_VIA_VIRTUAL (child) ? '1' |
---|
1242 | : '0', |
---|
1243 | asmfile); |
---|
1244 | putc (TREE_VIA_PUBLIC (child) ? '2' |
---|
1245 | : '0', |
---|
1246 | asmfile); |
---|
1247 | fprintf (asmfile, "%d,", |
---|
1248 | TREE_INT_CST_LOW (BINFO_OFFSET (child)) * BITS_PER_UNIT); |
---|
1249 | CHARS (15); |
---|
1250 | dbxout_type (BINFO_TYPE (child), 0, 0); |
---|
1251 | putc (';', asmfile); |
---|
1252 | } |
---|
1253 | else |
---|
1254 | { |
---|
1255 | /* Print out the base class information with fields |
---|
1256 | which have the same names at the types they hold. */ |
---|
1257 | dbxout_type_name (BINFO_TYPE (child)); |
---|
1258 | putc (':', asmfile); |
---|
1259 | dbxout_type (BINFO_TYPE (child), full, 0); |
---|
1260 | fprintf (asmfile, ",%d,%d;", |
---|
1261 | TREE_INT_CST_LOW (BINFO_OFFSET (child)) * BITS_PER_UNIT, |
---|
1262 | TREE_INT_CST_LOW (DECL_SIZE (TYPE_NAME (BINFO_TYPE (child)))) * BITS_PER_UNIT); |
---|
1263 | CHARS (20); |
---|
1264 | } |
---|
1265 | } |
---|
1266 | } |
---|
1267 | |
---|
1268 | CHARS (11); |
---|
1269 | |
---|
1270 | /* Write out the field declarations. */ |
---|
1271 | dbxout_type_fields (type); |
---|
1272 | if (use_gnu_debug_info_extensions && TYPE_METHODS (type) != NULL_TREE) |
---|
1273 | { |
---|
1274 | have_used_extensions = 1; |
---|
1275 | dbxout_type_methods (type); |
---|
1276 | } |
---|
1277 | putc (';', asmfile); |
---|
1278 | |
---|
1279 | if (use_gnu_debug_info_extensions && TREE_CODE (type) == RECORD_TYPE |
---|
1280 | /* Avoid the ~ if we don't really need it--it confuses dbx. */ |
---|
1281 | && TYPE_VFIELD (type)) |
---|
1282 | { |
---|
1283 | have_used_extensions = 1; |
---|
1284 | |
---|
1285 | /* Tell GDB+ that it may keep reading. */ |
---|
1286 | putc ('~', asmfile); |
---|
1287 | |
---|
1288 | /* We need to write out info about what field this class |
---|
1289 | uses as its "main" vtable pointer field, because if this |
---|
1290 | field is inherited from a base class, GDB cannot necessarily |
---|
1291 | figure out which field it's using in time. */ |
---|
1292 | if (TYPE_VFIELD (type)) |
---|
1293 | { |
---|
1294 | putc ('%', asmfile); |
---|
1295 | dbxout_type (DECL_FCONTEXT (TYPE_VFIELD (type)), 0, 0); |
---|
1296 | } |
---|
1297 | putc (';', asmfile); |
---|
1298 | CHARS (3); |
---|
1299 | } |
---|
1300 | break; |
---|
1301 | |
---|
1302 | case ENUMERAL_TYPE: |
---|
1303 | /* We must use the same test here as we use in the DBX_NO_XREFS case |
---|
1304 | above. We simplify it a bit since an enum will never have a variable |
---|
1305 | size. */ |
---|
1306 | if ((TYPE_NAME (type) != 0 |
---|
1307 | && ! (TREE_CODE (TYPE_NAME (type)) == TYPE_DECL |
---|
1308 | && DECL_IGNORED_P (TYPE_NAME (type))) |
---|
1309 | && !full) |
---|
1310 | || TYPE_SIZE (type) == 0) |
---|
1311 | { |
---|
1312 | fprintf (asmfile, "xe"); |
---|
1313 | CHARS (3); |
---|
1314 | dbxout_type_name (type); |
---|
1315 | typevec[TYPE_SYMTAB_ADDRESS (type)] = TYPE_XREF; |
---|
1316 | fprintf (asmfile, ":"); |
---|
1317 | return; |
---|
1318 | } |
---|
1319 | #ifdef DBX_OUTPUT_ENUM |
---|
1320 | DBX_OUTPUT_ENUM (asmfile, type); |
---|
1321 | #else |
---|
1322 | if (use_gnu_debug_info_extensions |
---|
1323 | && TYPE_PRECISION (type) != TYPE_PRECISION (integer_type_node)) |
---|
1324 | fprintf (asmfile, "@s%d;", TYPE_PRECISION (type)); |
---|
1325 | putc ('e', asmfile); |
---|
1326 | CHARS (1); |
---|
1327 | for (tem = TYPE_VALUES (type); tem; tem = TREE_CHAIN (tem)) |
---|
1328 | { |
---|
1329 | fprintf (asmfile, "%s:", IDENTIFIER_POINTER (TREE_PURPOSE (tem))); |
---|
1330 | if (TREE_INT_CST_HIGH (TREE_VALUE (tem)) == 0) |
---|
1331 | fprintf (asmfile, "%lu", |
---|
1332 | (unsigned long) TREE_INT_CST_LOW (TREE_VALUE (tem))); |
---|
1333 | else if (TREE_INT_CST_HIGH (TREE_VALUE (tem)) == -1 |
---|
1334 | && TREE_INT_CST_LOW (TREE_VALUE (tem)) < 0) |
---|
1335 | fprintf (asmfile, "%ld", |
---|
1336 | (long) TREE_INT_CST_LOW (TREE_VALUE (tem))); |
---|
1337 | else |
---|
1338 | print_int_cst_octal (TREE_VALUE (tem)); |
---|
1339 | fprintf (asmfile, ","); |
---|
1340 | CHARS (20 + IDENTIFIER_LENGTH (TREE_PURPOSE (tem))); |
---|
1341 | if (TREE_CHAIN (tem) != 0) |
---|
1342 | CONTIN; |
---|
1343 | } |
---|
1344 | putc (';', asmfile); |
---|
1345 | CHARS (1); |
---|
1346 | #endif |
---|
1347 | break; |
---|
1348 | |
---|
1349 | case POINTER_TYPE: |
---|
1350 | putc ('*', asmfile); |
---|
1351 | CHARS (1); |
---|
1352 | dbxout_type (TREE_TYPE (type), 0, 0); |
---|
1353 | break; |
---|
1354 | |
---|
1355 | case METHOD_TYPE: |
---|
1356 | if (use_gnu_debug_info_extensions) |
---|
1357 | { |
---|
1358 | have_used_extensions = 1; |
---|
1359 | putc ('#', asmfile); |
---|
1360 | CHARS (1); |
---|
1361 | if (flag_minimal_debug && !show_arg_types) |
---|
1362 | { |
---|
1363 | /* Normally, just output the return type. |
---|
1364 | The argument types are encoded in the method name. */ |
---|
1365 | putc ('#', asmfile); |
---|
1366 | dbxout_type (TREE_TYPE (type), 0, 0); |
---|
1367 | putc (';', asmfile); |
---|
1368 | CHARS (1); |
---|
1369 | } |
---|
1370 | else |
---|
1371 | { |
---|
1372 | /* When outputting destructors, we need to write |
---|
1373 | the argument types out longhand. */ |
---|
1374 | dbxout_type (TYPE_METHOD_BASETYPE (type), 0, 0); |
---|
1375 | putc (',', asmfile); |
---|
1376 | CHARS (1); |
---|
1377 | dbxout_type (TREE_TYPE (type), 0, 0); |
---|
1378 | dbxout_args (TYPE_ARG_TYPES (type)); |
---|
1379 | putc (';', asmfile); |
---|
1380 | CHARS (1); |
---|
1381 | } |
---|
1382 | } |
---|
1383 | else |
---|
1384 | { |
---|
1385 | /* Treat it as a function type. */ |
---|
1386 | dbxout_type (TREE_TYPE (type), 0, 0); |
---|
1387 | } |
---|
1388 | break; |
---|
1389 | |
---|
1390 | case OFFSET_TYPE: |
---|
1391 | if (use_gnu_debug_info_extensions) |
---|
1392 | { |
---|
1393 | have_used_extensions = 1; |
---|
1394 | putc ('@', asmfile); |
---|
1395 | CHARS (1); |
---|
1396 | dbxout_type (TYPE_OFFSET_BASETYPE (type), 0, 0); |
---|
1397 | putc (',', asmfile); |
---|
1398 | CHARS (1); |
---|
1399 | dbxout_type (TREE_TYPE (type), 0, 0); |
---|
1400 | } |
---|
1401 | else |
---|
1402 | { |
---|
1403 | /* Should print as an int, because it is really |
---|
1404 | just an offset. */ |
---|
1405 | dbxout_type (integer_type_node, 0, 0); |
---|
1406 | } |
---|
1407 | break; |
---|
1408 | |
---|
1409 | case REFERENCE_TYPE: |
---|
1410 | if (use_gnu_debug_info_extensions) |
---|
1411 | have_used_extensions = 1; |
---|
1412 | putc (use_gnu_debug_info_extensions ? '&' : '*', asmfile); |
---|
1413 | CHARS (1); |
---|
1414 | dbxout_type (TREE_TYPE (type), 0, 0); |
---|
1415 | break; |
---|
1416 | |
---|
1417 | case FUNCTION_TYPE: |
---|
1418 | putc ('f', asmfile); |
---|
1419 | CHARS (1); |
---|
1420 | dbxout_type (TREE_TYPE (type), 0, 0); |
---|
1421 | break; |
---|
1422 | |
---|
1423 | default: |
---|
1424 | abort (); |
---|
1425 | } |
---|
1426 | } |
---|
1427 | |
---|
1428 | /* Print the value of integer constant C, in octal, |
---|
1429 | handling double precision. */ |
---|
1430 | |
---|
1431 | static void |
---|
1432 | print_int_cst_octal (c) |
---|
1433 | tree c; |
---|
1434 | { |
---|
1435 | unsigned HOST_WIDE_INT high = TREE_INT_CST_HIGH (c); |
---|
1436 | unsigned HOST_WIDE_INT low = TREE_INT_CST_LOW (c); |
---|
1437 | int excess = (3 - (HOST_BITS_PER_WIDE_INT % 3)); |
---|
1438 | int width = TYPE_PRECISION (TREE_TYPE (c)); |
---|
1439 | |
---|
1440 | /* GDB wants constants with no extra leading "1" bits, so |
---|
1441 | we need to remove any sign-extension that might be |
---|
1442 | present. */ |
---|
1443 | if (width == HOST_BITS_PER_WIDE_INT * 2) |
---|
1444 | ; |
---|
1445 | else if (width > HOST_BITS_PER_WIDE_INT) |
---|
1446 | high &= (((HOST_WIDE_INT) 1 << (width - HOST_BITS_PER_WIDE_INT)) - 1); |
---|
1447 | else if (width == HOST_BITS_PER_WIDE_INT) |
---|
1448 | high = 0; |
---|
1449 | else |
---|
1450 | high = 0, low &= (((HOST_WIDE_INT) 1 << width) - 1); |
---|
1451 | |
---|
1452 | fprintf (asmfile, "0"); |
---|
1453 | |
---|
1454 | if (excess == 3) |
---|
1455 | { |
---|
1456 | print_octal (high, HOST_BITS_PER_WIDE_INT / 3); |
---|
1457 | print_octal (low, HOST_BITS_PER_WIDE_INT / 3); |
---|
1458 | } |
---|
1459 | else |
---|
1460 | { |
---|
1461 | unsigned HOST_WIDE_INT beg = high >> excess; |
---|
1462 | unsigned HOST_WIDE_INT middle |
---|
1463 | = ((high & (((HOST_WIDE_INT) 1 << excess) - 1)) << (3 - excess) |
---|
1464 | | (low >> (HOST_BITS_PER_WIDE_INT / 3 * 3))); |
---|
1465 | unsigned HOST_WIDE_INT end |
---|
1466 | = low & (((unsigned HOST_WIDE_INT) 1 |
---|
1467 | << (HOST_BITS_PER_WIDE_INT / 3 * 3)) |
---|
1468 | - 1); |
---|
1469 | |
---|
1470 | fprintf (asmfile, "%o%01o", beg, middle); |
---|
1471 | print_octal (end, HOST_BITS_PER_WIDE_INT / 3); |
---|
1472 | } |
---|
1473 | } |
---|
1474 | |
---|
1475 | static void |
---|
1476 | print_octal (value, digits) |
---|
1477 | unsigned HOST_WIDE_INT value; |
---|
1478 | int digits; |
---|
1479 | { |
---|
1480 | int i; |
---|
1481 | |
---|
1482 | for (i = digits - 1; i >= 0; i--) |
---|
1483 | fprintf (asmfile, "%01o", ((value >> (3 * i)) & 7)); |
---|
1484 | } |
---|
1485 | |
---|
1486 | /* Output the name of type TYPE, with no punctuation. |
---|
1487 | Such names can be set up either by typedef declarations |
---|
1488 | or by struct, enum and union tags. */ |
---|
1489 | |
---|
1490 | static void |
---|
1491 | dbxout_type_name (type) |
---|
1492 | register tree type; |
---|
1493 | { |
---|
1494 | tree t; |
---|
1495 | if (TYPE_NAME (type) == 0) |
---|
1496 | abort (); |
---|
1497 | if (TREE_CODE (TYPE_NAME (type)) == IDENTIFIER_NODE) |
---|
1498 | { |
---|
1499 | t = TYPE_NAME (type); |
---|
1500 | } |
---|
1501 | else if (TREE_CODE (TYPE_NAME (type)) == TYPE_DECL) |
---|
1502 | { |
---|
1503 | t = DECL_NAME (TYPE_NAME (type)); |
---|
1504 | } |
---|
1505 | else |
---|
1506 | abort (); |
---|
1507 | |
---|
1508 | fprintf (asmfile, "%s", IDENTIFIER_POINTER (t)); |
---|
1509 | CHARS (IDENTIFIER_LENGTH (t)); |
---|
1510 | } |
---|
1511 | |
---|
1512 | /* Output a .stabs for the symbol defined by DECL, |
---|
1513 | which must be a ..._DECL node in the normal namespace. |
---|
1514 | It may be a CONST_DECL, a FUNCTION_DECL, a PARM_DECL or a VAR_DECL. |
---|
1515 | LOCAL is nonzero if the scope is less than the entire file. */ |
---|
1516 | |
---|
1517 | void |
---|
1518 | dbxout_symbol (decl, local) |
---|
1519 | tree decl; |
---|
1520 | int local; |
---|
1521 | { |
---|
1522 | tree type = TREE_TYPE (decl); |
---|
1523 | tree context = NULL_TREE; |
---|
1524 | |
---|
1525 | /* Cast avoids warning in old compilers. */ |
---|
1526 | current_sym_code = (STAB_CODE_TYPE) 0; |
---|
1527 | current_sym_value = 0; |
---|
1528 | current_sym_addr = 0; |
---|
1529 | |
---|
1530 | /* Ignore nameless syms, but don't ignore type tags. */ |
---|
1531 | |
---|
1532 | if ((DECL_NAME (decl) == 0 && TREE_CODE (decl) != TYPE_DECL) |
---|
1533 | || DECL_IGNORED_P (decl)) |
---|
1534 | return; |
---|
1535 | |
---|
1536 | dbxout_prepare_symbol (decl); |
---|
1537 | |
---|
1538 | /* The output will always start with the symbol name, |
---|
1539 | so always count that in the length-output-so-far. */ |
---|
1540 | |
---|
1541 | if (DECL_NAME (decl) != 0) |
---|
1542 | current_sym_nchars = 2 + IDENTIFIER_LENGTH (DECL_NAME (decl)); |
---|
1543 | |
---|
1544 | switch (TREE_CODE (decl)) |
---|
1545 | { |
---|
1546 | case CONST_DECL: |
---|
1547 | /* Enum values are defined by defining the enum type. */ |
---|
1548 | break; |
---|
1549 | |
---|
1550 | case FUNCTION_DECL: |
---|
1551 | if (DECL_RTL (decl) == 0) |
---|
1552 | return; |
---|
1553 | if (DECL_EXTERNAL (decl)) |
---|
1554 | break; |
---|
1555 | /* Don't mention a nested function under its parent. */ |
---|
1556 | context = decl_function_context (decl); |
---|
1557 | if (context == current_function_decl) |
---|
1558 | break; |
---|
1559 | if (GET_CODE (DECL_RTL (decl)) != MEM |
---|
1560 | || GET_CODE (XEXP (DECL_RTL (decl), 0)) != SYMBOL_REF) |
---|
1561 | break; |
---|
1562 | FORCE_TEXT; |
---|
1563 | |
---|
1564 | fprintf (asmfile, "%s \"%s:%c", ASM_STABS_OP, |
---|
1565 | IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (decl)), |
---|
1566 | TREE_PUBLIC (decl) ? 'F' : 'f'); |
---|
1567 | |
---|
1568 | current_sym_code = N_FUN; |
---|
1569 | current_sym_addr = XEXP (DECL_RTL (decl), 0); |
---|
1570 | |
---|
1571 | if (TREE_TYPE (type)) |
---|
1572 | dbxout_type (TREE_TYPE (type), 0, 0); |
---|
1573 | else |
---|
1574 | dbxout_type (void_type_node, 0, 0); |
---|
1575 | |
---|
1576 | /* For a nested function, when that function is compiled, |
---|
1577 | mention the containing function name |
---|
1578 | as well as (since dbx wants it) our own assembler-name. */ |
---|
1579 | if (context != 0) |
---|
1580 | fprintf (asmfile, ",%s,%s", |
---|
1581 | IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (decl)), |
---|
1582 | IDENTIFIER_POINTER (DECL_NAME (context))); |
---|
1583 | |
---|
1584 | dbxout_finish_symbol (decl); |
---|
1585 | break; |
---|
1586 | |
---|
1587 | case TYPE_DECL: |
---|
1588 | #if 0 |
---|
1589 | /* This seems all wrong. Outputting most kinds of types gives no name |
---|
1590 | at all. A true definition gives no name; a cross-ref for a |
---|
1591 | structure can give the tag name, but not a type name. |
---|
1592 | It seems that no typedef name is defined by outputting a type. */ |
---|
1593 | |
---|
1594 | /* If this typedef name was defined by outputting the type, |
---|
1595 | don't duplicate it. */ |
---|
1596 | if (typevec[TYPE_SYMTAB_ADDRESS (type)] == TYPE_DEFINED |
---|
1597 | && TYPE_NAME (TREE_TYPE (decl)) == decl) |
---|
1598 | return; |
---|
1599 | #endif |
---|
1600 | /* Don't output the same typedef twice. |
---|
1601 | And don't output what language-specific stuff doesn't want output. */ |
---|
1602 | if (TREE_ASM_WRITTEN (decl) || TYPE_DECL_SUPPRESS_DEBUG (decl)) |
---|
1603 | return; |
---|
1604 | |
---|
1605 | FORCE_TEXT; |
---|
1606 | |
---|
1607 | { |
---|
1608 | int tag_needed = 1; |
---|
1609 | int did_output = 0; |
---|
1610 | |
---|
1611 | if (DECL_NAME (decl)) |
---|
1612 | { |
---|
1613 | /* Nonzero means we must output a tag as well as a typedef. */ |
---|
1614 | tag_needed = 0; |
---|
1615 | |
---|
1616 | /* Handle the case of a C++ structure or union |
---|
1617 | where the TYPE_NAME is a TYPE_DECL |
---|
1618 | which gives both a typedef name and a tag. */ |
---|
1619 | /* dbx requires the tag first and the typedef second. */ |
---|
1620 | if ((TREE_CODE (type) == RECORD_TYPE |
---|
1621 | || TREE_CODE (type) == UNION_TYPE |
---|
1622 | || TREE_CODE (type) == QUAL_UNION_TYPE) |
---|
1623 | && TYPE_NAME (type) == decl |
---|
1624 | && !(use_gnu_debug_info_extensions && have_used_extensions) |
---|
1625 | && !TREE_ASM_WRITTEN (TYPE_NAME (type)) |
---|
1626 | /* Distinguish the implicit typedefs of C++ |
---|
1627 | from explicit ones that might be found in C. */ |
---|
1628 | && (!strcmp (lang_identify (), "cplusplus") |
---|
1629 | /* The following line maybe unnecessary; |
---|
1630 | in 2.6, try removing it. */ |
---|
1631 | || DECL_SOURCE_LINE (decl) == 0)) |
---|
1632 | { |
---|
1633 | tree name = TYPE_NAME (type); |
---|
1634 | if (TREE_CODE (name) == TYPE_DECL) |
---|
1635 | name = DECL_NAME (name); |
---|
1636 | |
---|
1637 | current_sym_code = DBX_TYPE_DECL_STABS_CODE; |
---|
1638 | current_sym_value = 0; |
---|
1639 | current_sym_addr = 0; |
---|
1640 | current_sym_nchars = 2 + IDENTIFIER_LENGTH (name); |
---|
1641 | |
---|
1642 | fprintf (asmfile, "%s \"%s:T", ASM_STABS_OP, |
---|
1643 | IDENTIFIER_POINTER (name)); |
---|
1644 | dbxout_type (type, 1, 0); |
---|
1645 | dbxout_finish_symbol (NULL_TREE); |
---|
1646 | } |
---|
1647 | |
---|
1648 | /* Output typedef name. */ |
---|
1649 | fprintf (asmfile, "%s \"%s:", ASM_STABS_OP, |
---|
1650 | IDENTIFIER_POINTER (DECL_NAME (decl))); |
---|
1651 | |
---|
1652 | /* Short cut way to output a tag also. */ |
---|
1653 | if ((TREE_CODE (type) == RECORD_TYPE |
---|
1654 | || TREE_CODE (type) == UNION_TYPE |
---|
1655 | || TREE_CODE (type) == QUAL_UNION_TYPE) |
---|
1656 | && TYPE_NAME (type) == decl) |
---|
1657 | { |
---|
1658 | if (use_gnu_debug_info_extensions && have_used_extensions) |
---|
1659 | { |
---|
1660 | putc ('T', asmfile); |
---|
1661 | TREE_ASM_WRITTEN (TYPE_NAME (type)) = 1; |
---|
1662 | } |
---|
1663 | #if 0 /* Now we generate the tag for this case up above. */ |
---|
1664 | else |
---|
1665 | tag_needed = 1; |
---|
1666 | #endif |
---|
1667 | } |
---|
1668 | |
---|
1669 | putc ('t', asmfile); |
---|
1670 | current_sym_code = DBX_TYPE_DECL_STABS_CODE; |
---|
1671 | |
---|
1672 | dbxout_type (type, 1, 0); |
---|
1673 | dbxout_finish_symbol (decl); |
---|
1674 | did_output = 1; |
---|
1675 | } |
---|
1676 | |
---|
1677 | /* Don't output a tag if this is an incomplete type (TYPE_SIZE is |
---|
1678 | zero). This prevents the sun4 Sun OS 4.x dbx from crashing. */ |
---|
1679 | |
---|
1680 | if (tag_needed && TYPE_NAME (type) != 0 |
---|
1681 | && (TREE_CODE (TYPE_NAME (type)) == IDENTIFIER_NODE |
---|
1682 | || (DECL_NAME (TYPE_NAME (type)) != 0)) |
---|
1683 | && TYPE_SIZE (type) != 0 |
---|
1684 | && !TREE_ASM_WRITTEN (TYPE_NAME (type))) |
---|
1685 | { |
---|
1686 | /* For a TYPE_DECL with no name, but the type has a name, |
---|
1687 | output a tag. |
---|
1688 | This is what represents `struct foo' with no typedef. */ |
---|
1689 | /* In C++, the name of a type is the corresponding typedef. |
---|
1690 | In C, it is an IDENTIFIER_NODE. */ |
---|
1691 | tree name = TYPE_NAME (type); |
---|
1692 | if (TREE_CODE (name) == TYPE_DECL) |
---|
1693 | name = DECL_NAME (name); |
---|
1694 | |
---|
1695 | current_sym_code = DBX_TYPE_DECL_STABS_CODE; |
---|
1696 | current_sym_value = 0; |
---|
1697 | current_sym_addr = 0; |
---|
1698 | current_sym_nchars = 2 + IDENTIFIER_LENGTH (name); |
---|
1699 | |
---|
1700 | fprintf (asmfile, "%s \"%s:T", ASM_STABS_OP, |
---|
1701 | IDENTIFIER_POINTER (name)); |
---|
1702 | dbxout_type (type, 1, 0); |
---|
1703 | dbxout_finish_symbol (NULL_TREE); |
---|
1704 | did_output = 1; |
---|
1705 | } |
---|
1706 | |
---|
1707 | /* If an enum type has no name, it cannot be referred to, |
---|
1708 | but we must output it anyway, since the enumeration constants |
---|
1709 | can be referred to. */ |
---|
1710 | if (!did_output && TREE_CODE (type) == ENUMERAL_TYPE) |
---|
1711 | { |
---|
1712 | current_sym_code = DBX_TYPE_DECL_STABS_CODE; |
---|
1713 | current_sym_value = 0; |
---|
1714 | current_sym_addr = 0; |
---|
1715 | current_sym_nchars = 2; |
---|
1716 | |
---|
1717 | /* Some debuggers fail when given NULL names, so give this a |
---|
1718 | harmless name of ` '. */ |
---|
1719 | fprintf (asmfile, "%s \" :T", ASM_STABS_OP); |
---|
1720 | dbxout_type (type, 1, 0); |
---|
1721 | dbxout_finish_symbol (NULL_TREE); |
---|
1722 | } |
---|
1723 | |
---|
1724 | /* Prevent duplicate output of a typedef. */ |
---|
1725 | TREE_ASM_WRITTEN (decl) = 1; |
---|
1726 | break; |
---|
1727 | } |
---|
1728 | |
---|
1729 | case PARM_DECL: |
---|
1730 | /* Parm decls go in their own separate chains |
---|
1731 | and are output by dbxout_reg_parms and dbxout_parms. */ |
---|
1732 | abort (); |
---|
1733 | |
---|
1734 | case RESULT_DECL: |
---|
1735 | /* Named return value, treat like a VAR_DECL. */ |
---|
1736 | case VAR_DECL: |
---|
1737 | if (DECL_RTL (decl) == 0) |
---|
1738 | return; |
---|
1739 | /* Don't mention a variable that is external. |
---|
1740 | Let the file that defines it describe it. */ |
---|
1741 | if (DECL_EXTERNAL (decl)) |
---|
1742 | break; |
---|
1743 | |
---|
1744 | /* If the variable is really a constant |
---|
1745 | and not written in memory, inform the debugger. */ |
---|
1746 | if (TREE_STATIC (decl) && TREE_READONLY (decl) |
---|
1747 | && DECL_INITIAL (decl) != 0 |
---|
1748 | && ! TREE_ASM_WRITTEN (decl) |
---|
1749 | && (DECL_FIELD_CONTEXT (decl) == NULL_TREE |
---|
1750 | || TREE_CODE (DECL_FIELD_CONTEXT (decl)) == BLOCK)) |
---|
1751 | { |
---|
1752 | if (TREE_PUBLIC (decl) == 0) |
---|
1753 | { |
---|
1754 | /* The sun4 assembler does not grok this. */ |
---|
1755 | char *name = IDENTIFIER_POINTER (DECL_NAME (decl)); |
---|
1756 | if (TREE_CODE (TREE_TYPE (decl)) == INTEGER_TYPE |
---|
1757 | || TREE_CODE (TREE_TYPE (decl)) == ENUMERAL_TYPE) |
---|
1758 | { |
---|
1759 | HOST_WIDE_INT ival = TREE_INT_CST_LOW (DECL_INITIAL (decl)); |
---|
1760 | #ifdef DBX_OUTPUT_CONSTANT_SYMBOL |
---|
1761 | DBX_OUTPUT_CONSTANT_SYMBOL (asmfile, name, ival); |
---|
1762 | #else |
---|
1763 | fprintf (asmfile, "%s \"%s:c=i%d\",0x%x,0,0,0\n", |
---|
1764 | ASM_STABS_OP, name, ival, N_LSYM); |
---|
1765 | #endif |
---|
1766 | return; |
---|
1767 | } |
---|
1768 | else if (TREE_CODE (TREE_TYPE (decl)) == REAL_TYPE) |
---|
1769 | { |
---|
1770 | /* don't know how to do this yet. */ |
---|
1771 | } |
---|
1772 | break; |
---|
1773 | } |
---|
1774 | /* else it is something we handle like a normal variable. */ |
---|
1775 | } |
---|
1776 | |
---|
1777 | DECL_RTL (decl) = eliminate_regs (DECL_RTL (decl), 0, NULL_RTX); |
---|
1778 | #ifdef LEAF_REG_REMAP |
---|
1779 | if (leaf_function) |
---|
1780 | leaf_renumber_regs_insn (DECL_RTL (decl)); |
---|
1781 | #endif |
---|
1782 | |
---|
1783 | dbxout_symbol_location (decl, type, 0, DECL_RTL (decl)); |
---|
1784 | } |
---|
1785 | } |
---|
1786 | |
---|
1787 | /* Output the stab for DECL, a VAR_DECL, RESULT_DECL or PARM_DECL. |
---|
1788 | Add SUFFIX to its name, if SUFFIX is not 0. |
---|
1789 | Describe the variable as residing in HOME |
---|
1790 | (usually HOME is DECL_RTL (DECL), but not always). */ |
---|
1791 | |
---|
1792 | static void |
---|
1793 | dbxout_symbol_location (decl, type, suffix, home) |
---|
1794 | tree decl, type; |
---|
1795 | char *suffix; |
---|
1796 | rtx home; |
---|
1797 | { |
---|
1798 | int letter = 0; |
---|
1799 | int regno = -1; |
---|
1800 | |
---|
1801 | /* Don't mention a variable at all |
---|
1802 | if it was completely optimized into nothingness. |
---|
1803 | |
---|
1804 | If the decl was from an inline function, then it's rtl |
---|
1805 | is not identically the rtl that was used in this |
---|
1806 | particular compilation. */ |
---|
1807 | if (GET_CODE (home) == REG) |
---|
1808 | { |
---|
1809 | regno = REGNO (home); |
---|
1810 | if (regno >= FIRST_PSEUDO_REGISTER) |
---|
1811 | return; |
---|
1812 | } |
---|
1813 | else if (GET_CODE (home) == SUBREG) |
---|
1814 | { |
---|
1815 | rtx value = home; |
---|
1816 | int offset = 0; |
---|
1817 | while (GET_CODE (value) == SUBREG) |
---|
1818 | { |
---|
1819 | offset += SUBREG_WORD (value); |
---|
1820 | value = SUBREG_REG (value); |
---|
1821 | } |
---|
1822 | if (GET_CODE (value) == REG) |
---|
1823 | { |
---|
1824 | regno = REGNO (value); |
---|
1825 | if (regno >= FIRST_PSEUDO_REGISTER) |
---|
1826 | return; |
---|
1827 | regno += offset; |
---|
1828 | } |
---|
1829 | alter_subreg (home); |
---|
1830 | } |
---|
1831 | |
---|
1832 | /* The kind-of-variable letter depends on where |
---|
1833 | the variable is and on the scope of its name: |
---|
1834 | G and N_GSYM for static storage and global scope, |
---|
1835 | S for static storage and file scope, |
---|
1836 | V for static storage and local scope, |
---|
1837 | for those two, use N_LCSYM if data is in bss segment, |
---|
1838 | N_STSYM if in data segment, N_FUN otherwise. |
---|
1839 | (We used N_FUN originally, then changed to N_STSYM |
---|
1840 | to please GDB. However, it seems that confused ld. |
---|
1841 | Now GDB has been fixed to like N_FUN, says Kingdon.) |
---|
1842 | no letter at all, and N_LSYM, for auto variable, |
---|
1843 | r and N_RSYM for register variable. */ |
---|
1844 | |
---|
1845 | if (GET_CODE (home) == MEM |
---|
1846 | && GET_CODE (XEXP (home, 0)) == SYMBOL_REF) |
---|
1847 | { |
---|
1848 | if (TREE_PUBLIC (decl)) |
---|
1849 | { |
---|
1850 | letter = 'G'; |
---|
1851 | current_sym_code = N_GSYM; |
---|
1852 | } |
---|
1853 | else |
---|
1854 | { |
---|
1855 | current_sym_addr = XEXP (home, 0); |
---|
1856 | |
---|
1857 | letter = decl_function_context (decl) ? 'V' : 'S'; |
---|
1858 | |
---|
1859 | /* This should be the same condition as in assemble_variable, but |
---|
1860 | we don't have access to dont_output_data here. So, instead, |
---|
1861 | we rely on the fact that error_mark_node initializers always |
---|
1862 | end up in bss for C++ and never end up in bss for C. */ |
---|
1863 | if (DECL_INITIAL (decl) == 0 |
---|
1864 | || (!strcmp (lang_identify (), "cplusplus") |
---|
1865 | && DECL_INITIAL (decl) == error_mark_node)) |
---|
1866 | current_sym_code = N_LCSYM; |
---|
1867 | else if (DECL_IN_TEXT_SECTION (decl)) |
---|
1868 | /* This is not quite right, but it's the closest |
---|
1869 | of all the codes that Unix defines. */ |
---|
1870 | current_sym_code = DBX_STATIC_CONST_VAR_CODE; |
---|
1871 | else |
---|
1872 | { |
---|
1873 | /* Ultrix `as' seems to need this. */ |
---|
1874 | #ifdef DBX_STATIC_STAB_DATA_SECTION |
---|
1875 | data_section (); |
---|
1876 | #endif |
---|
1877 | current_sym_code = N_STSYM; |
---|
1878 | } |
---|
1879 | } |
---|
1880 | } |
---|
1881 | else if (regno >= 0) |
---|
1882 | { |
---|
1883 | letter = 'r'; |
---|
1884 | current_sym_code = N_RSYM; |
---|
1885 | current_sym_value = DBX_REGISTER_NUMBER (regno); |
---|
1886 | } |
---|
1887 | else if (GET_CODE (home) == MEM |
---|
1888 | && (GET_CODE (XEXP (home, 0)) == MEM |
---|
1889 | || (GET_CODE (XEXP (home, 0)) == REG |
---|
1890 | && REGNO (XEXP (home, 0)) != HARD_FRAME_POINTER_REGNUM))) |
---|
1891 | /* If the value is indirect by memory or by a register |
---|
1892 | that isn't the frame pointer |
---|
1893 | then it means the object is variable-sized and address through |
---|
1894 | that register or stack slot. DBX has no way to represent this |
---|
1895 | so all we can do is output the variable as a pointer. |
---|
1896 | If it's not a parameter, ignore it. |
---|
1897 | (VAR_DECLs like this can be made by integrate.c.) */ |
---|
1898 | { |
---|
1899 | if (GET_CODE (XEXP (home, 0)) == REG) |
---|
1900 | { |
---|
1901 | letter = 'r'; |
---|
1902 | current_sym_code = N_RSYM; |
---|
1903 | current_sym_value = DBX_REGISTER_NUMBER (REGNO (XEXP (home, 0))); |
---|
1904 | } |
---|
1905 | else |
---|
1906 | { |
---|
1907 | current_sym_code = N_LSYM; |
---|
1908 | /* RTL looks like (MEM (MEM (PLUS (REG...) (CONST_INT...)))). |
---|
1909 | We want the value of that CONST_INT. */ |
---|
1910 | current_sym_value |
---|
1911 | = DEBUGGER_AUTO_OFFSET (XEXP (XEXP (home, 0), 0)); |
---|
1912 | } |
---|
1913 | |
---|
1914 | /* Effectively do build_pointer_type, but don't cache this type, |
---|
1915 | since it might be temporary whereas the type it points to |
---|
1916 | might have been saved for inlining. */ |
---|
1917 | /* Don't use REFERENCE_TYPE because dbx can't handle that. */ |
---|
1918 | type = make_node (POINTER_TYPE); |
---|
1919 | TREE_TYPE (type) = TREE_TYPE (decl); |
---|
1920 | } |
---|
1921 | else if (GET_CODE (home) == MEM |
---|
1922 | && GET_CODE (XEXP (home, 0)) == REG) |
---|
1923 | { |
---|
1924 | current_sym_code = N_LSYM; |
---|
1925 | current_sym_value = DEBUGGER_AUTO_OFFSET (XEXP (home, 0)); |
---|
1926 | } |
---|
1927 | else if (GET_CODE (home) == MEM |
---|
1928 | && GET_CODE (XEXP (home, 0)) == PLUS |
---|
1929 | && GET_CODE (XEXP (XEXP (home, 0), 1)) == CONST_INT) |
---|
1930 | { |
---|
1931 | current_sym_code = N_LSYM; |
---|
1932 | /* RTL looks like (MEM (PLUS (REG...) (CONST_INT...))) |
---|
1933 | We want the value of that CONST_INT. */ |
---|
1934 | current_sym_value = DEBUGGER_AUTO_OFFSET (XEXP (home, 0)); |
---|
1935 | } |
---|
1936 | else if (GET_CODE (home) == MEM |
---|
1937 | && GET_CODE (XEXP (home, 0)) == CONST) |
---|
1938 | { |
---|
1939 | /* Handle an obscure case which can arise when optimizing and |
---|
1940 | when there are few available registers. (This is *always* |
---|
1941 | the case for i386/i486 targets). The RTL looks like |
---|
1942 | (MEM (CONST ...)) even though this variable is a local `auto' |
---|
1943 | or a local `register' variable. In effect, what has happened |
---|
1944 | is that the reload pass has seen that all assignments and |
---|
1945 | references for one such a local variable can be replaced by |
---|
1946 | equivalent assignments and references to some static storage |
---|
1947 | variable, thereby avoiding the need for a register. In such |
---|
1948 | cases we're forced to lie to debuggers and tell them that |
---|
1949 | this variable was itself `static'. */ |
---|
1950 | current_sym_code = N_LCSYM; |
---|
1951 | letter = 'V'; |
---|
1952 | current_sym_addr = XEXP (XEXP (home, 0), 0); |
---|
1953 | } |
---|
1954 | else if (GET_CODE (home) == CONCAT) |
---|
1955 | { |
---|
1956 | tree subtype = TREE_TYPE (type); |
---|
1957 | |
---|
1958 | /* If the variable's storage is in two parts, |
---|
1959 | output each as a separate stab with a modified name. */ |
---|
1960 | if (WORDS_BIG_ENDIAN) |
---|
1961 | dbxout_symbol_location (decl, subtype, "$imag", XEXP (home, 0)); |
---|
1962 | else |
---|
1963 | dbxout_symbol_location (decl, subtype, "$real", XEXP (home, 0)); |
---|
1964 | |
---|
1965 | /* Cast avoids warning in old compilers. */ |
---|
1966 | current_sym_code = (STAB_CODE_TYPE) 0; |
---|
1967 | current_sym_value = 0; |
---|
1968 | current_sym_addr = 0; |
---|
1969 | dbxout_prepare_symbol (decl); |
---|
1970 | |
---|
1971 | if (WORDS_BIG_ENDIAN) |
---|
1972 | dbxout_symbol_location (decl, subtype, "$real", XEXP (home, 1)); |
---|
1973 | else |
---|
1974 | dbxout_symbol_location (decl, subtype, "$imag", XEXP (home, 1)); |
---|
1975 | return; |
---|
1976 | } |
---|
1977 | else |
---|
1978 | /* Address might be a MEM, when DECL is a variable-sized object. |
---|
1979 | Or it might be const0_rtx, meaning previous passes |
---|
1980 | want us to ignore this variable. */ |
---|
1981 | return; |
---|
1982 | |
---|
1983 | /* Ok, start a symtab entry and output the variable name. */ |
---|
1984 | FORCE_TEXT; |
---|
1985 | |
---|
1986 | #ifdef DBX_STATIC_BLOCK_START |
---|
1987 | DBX_STATIC_BLOCK_START (asmfile, current_sym_code); |
---|
1988 | #endif |
---|
1989 | |
---|
1990 | dbxout_symbol_name (decl, suffix, letter); |
---|
1991 | dbxout_type (type, 0, 0); |
---|
1992 | dbxout_finish_symbol (decl); |
---|
1993 | |
---|
1994 | #ifdef DBX_STATIC_BLOCK_END |
---|
1995 | DBX_STATIC_BLOCK_END (asmfile, current_sym_code); |
---|
1996 | #endif |
---|
1997 | } |
---|
1998 | |
---|
1999 | /* Output the symbol name of DECL for a stabs, with suffix SUFFIX. |
---|
2000 | Then output LETTER to indicate the kind of location the symbol has. */ |
---|
2001 | |
---|
2002 | static void |
---|
2003 | dbxout_symbol_name (decl, suffix, letter) |
---|
2004 | tree decl; |
---|
2005 | char *suffix; |
---|
2006 | int letter; |
---|
2007 | { |
---|
2008 | /* One slight hitch: if this is a VAR_DECL which is a static |
---|
2009 | class member, we must put out the mangled name instead of the |
---|
2010 | DECL_NAME. Note also that static member (variable) names DO NOT begin |
---|
2011 | with underscores in .stabs directives. */ |
---|
2012 | char *name = IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (decl)); |
---|
2013 | if (name == 0) |
---|
2014 | name = "(anon)"; |
---|
2015 | fprintf (asmfile, "%s \"%s%s:", ASM_STABS_OP, name, |
---|
2016 | (suffix ? suffix : "")); |
---|
2017 | |
---|
2018 | if (letter) putc (letter, asmfile); |
---|
2019 | } |
---|
2020 | |
---|
2021 | static void |
---|
2022 | dbxout_prepare_symbol (decl) |
---|
2023 | tree decl; |
---|
2024 | { |
---|
2025 | #ifdef WINNING_GDB |
---|
2026 | char *filename = DECL_SOURCE_FILE (decl); |
---|
2027 | |
---|
2028 | dbxout_source_file (asmfile, filename); |
---|
2029 | #endif |
---|
2030 | } |
---|
2031 | |
---|
2032 | static void |
---|
2033 | dbxout_finish_symbol (sym) |
---|
2034 | tree sym; |
---|
2035 | { |
---|
2036 | #ifdef DBX_FINISH_SYMBOL |
---|
2037 | DBX_FINISH_SYMBOL (sym); |
---|
2038 | #else |
---|
2039 | int line = 0; |
---|
2040 | if (use_gnu_debug_info_extensions && sym != 0) |
---|
2041 | line = DECL_SOURCE_LINE (sym); |
---|
2042 | |
---|
2043 | fprintf (asmfile, "\",%d,0,%d,", current_sym_code, line); |
---|
2044 | if (current_sym_addr) |
---|
2045 | output_addr_const (asmfile, current_sym_addr); |
---|
2046 | else |
---|
2047 | fprintf (asmfile, "%d", current_sym_value); |
---|
2048 | putc ('\n', asmfile); |
---|
2049 | #endif |
---|
2050 | } |
---|
2051 | |
---|
2052 | /* Output definitions of all the decls in a chain. */ |
---|
2053 | |
---|
2054 | void |
---|
2055 | dbxout_syms (syms) |
---|
2056 | tree syms; |
---|
2057 | { |
---|
2058 | while (syms) |
---|
2059 | { |
---|
2060 | dbxout_symbol (syms, 1); |
---|
2061 | syms = TREE_CHAIN (syms); |
---|
2062 | } |
---|
2063 | } |
---|
2064 | |
---|
2065 | /* The following two functions output definitions of function parameters. |
---|
2066 | Each parameter gets a definition locating it in the parameter list. |
---|
2067 | Each parameter that is a register variable gets a second definition |
---|
2068 | locating it in the register. |
---|
2069 | |
---|
2070 | Printing or argument lists in gdb uses the definitions that |
---|
2071 | locate in the parameter list. But reference to the variable in |
---|
2072 | expressions uses preferentially the definition as a register. */ |
---|
2073 | |
---|
2074 | /* Output definitions, referring to storage in the parmlist, |
---|
2075 | of all the parms in PARMS, which is a chain of PARM_DECL nodes. */ |
---|
2076 | |
---|
2077 | void |
---|
2078 | dbxout_parms (parms) |
---|
2079 | tree parms; |
---|
2080 | { |
---|
2081 | for (; parms; parms = TREE_CHAIN (parms)) |
---|
2082 | if (DECL_NAME (parms) && TREE_TYPE (parms) != error_mark_node) |
---|
2083 | { |
---|
2084 | dbxout_prepare_symbol (parms); |
---|
2085 | |
---|
2086 | /* Perform any necessary register eliminations on the parameter's rtl, |
---|
2087 | so that the debugging output will be accurate. */ |
---|
2088 | DECL_INCOMING_RTL (parms) |
---|
2089 | = eliminate_regs (DECL_INCOMING_RTL (parms), 0, NULL_RTX); |
---|
2090 | DECL_RTL (parms) = eliminate_regs (DECL_RTL (parms), 0, NULL_RTX); |
---|
2091 | #ifdef LEAF_REG_REMAP |
---|
2092 | if (leaf_function) |
---|
2093 | { |
---|
2094 | leaf_renumber_regs_insn (DECL_INCOMING_RTL (parms)); |
---|
2095 | leaf_renumber_regs_insn (DECL_RTL (parms)); |
---|
2096 | } |
---|
2097 | #endif |
---|
2098 | |
---|
2099 | if (PARM_PASSED_IN_MEMORY (parms)) |
---|
2100 | { |
---|
2101 | rtx addr = XEXP (DECL_INCOMING_RTL (parms), 0); |
---|
2102 | |
---|
2103 | /* ??? Here we assume that the parm address is indexed |
---|
2104 | off the frame pointer or arg pointer. |
---|
2105 | If that is not true, we produce meaningless results, |
---|
2106 | but do not crash. */ |
---|
2107 | if (GET_CODE (addr) == PLUS |
---|
2108 | && GET_CODE (XEXP (addr, 1)) == CONST_INT) |
---|
2109 | current_sym_value = INTVAL (XEXP (addr, 1)); |
---|
2110 | else |
---|
2111 | current_sym_value = 0; |
---|
2112 | |
---|
2113 | current_sym_code = N_PSYM; |
---|
2114 | current_sym_addr = 0; |
---|
2115 | |
---|
2116 | FORCE_TEXT; |
---|
2117 | if (DECL_NAME (parms)) |
---|
2118 | { |
---|
2119 | current_sym_nchars = 2 + IDENTIFIER_LENGTH (DECL_NAME (parms)); |
---|
2120 | |
---|
2121 | fprintf (asmfile, "%s \"%s:%c", ASM_STABS_OP, |
---|
2122 | IDENTIFIER_POINTER (DECL_NAME (parms)), |
---|
2123 | DBX_MEMPARM_STABS_LETTER); |
---|
2124 | } |
---|
2125 | else |
---|
2126 | { |
---|
2127 | current_sym_nchars = 8; |
---|
2128 | fprintf (asmfile, "%s \"(anon):%c", ASM_STABS_OP, |
---|
2129 | DBX_MEMPARM_STABS_LETTER); |
---|
2130 | } |
---|
2131 | |
---|
2132 | dbxout_type (DECL_ARG_TYPE (parms), 0, 0); |
---|
2133 | current_sym_value = DEBUGGER_ARG_OFFSET (current_sym_value, addr); |
---|
2134 | dbxout_finish_symbol (parms); |
---|
2135 | } |
---|
2136 | else if (GET_CODE (DECL_RTL (parms)) == REG) |
---|
2137 | { |
---|
2138 | rtx best_rtl; |
---|
2139 | char regparm_letter; |
---|
2140 | tree parm_type; |
---|
2141 | /* Parm passed in registers and lives in registers or nowhere. */ |
---|
2142 | |
---|
2143 | current_sym_code = DBX_REGPARM_STABS_CODE; |
---|
2144 | regparm_letter = DBX_REGPARM_STABS_LETTER; |
---|
2145 | current_sym_addr = 0; |
---|
2146 | |
---|
2147 | /* If parm lives in a register, use that register; |
---|
2148 | pretend the parm was passed there. It would be more consistent |
---|
2149 | to describe the register where the parm was passed, |
---|
2150 | but in practice that register usually holds something else. |
---|
2151 | |
---|
2152 | If we use DECL_RTL, then we must use the declared type of |
---|
2153 | the variable, not the type that it arrived in. */ |
---|
2154 | if (REGNO (DECL_RTL (parms)) >= 0 |
---|
2155 | && REGNO (DECL_RTL (parms)) < FIRST_PSEUDO_REGISTER) |
---|
2156 | { |
---|
2157 | best_rtl = DECL_RTL (parms); |
---|
2158 | parm_type = TREE_TYPE (parms); |
---|
2159 | } |
---|
2160 | /* If the parm lives nowhere, use the register where it was |
---|
2161 | passed. It is also better to use the declared type here. */ |
---|
2162 | else |
---|
2163 | { |
---|
2164 | best_rtl = DECL_INCOMING_RTL (parms); |
---|
2165 | parm_type = TREE_TYPE (parms); |
---|
2166 | } |
---|
2167 | current_sym_value = DBX_REGISTER_NUMBER (REGNO (best_rtl)); |
---|
2168 | |
---|
2169 | FORCE_TEXT; |
---|
2170 | if (DECL_NAME (parms)) |
---|
2171 | { |
---|
2172 | current_sym_nchars = 2 + IDENTIFIER_LENGTH (DECL_NAME (parms)); |
---|
2173 | fprintf (asmfile, "%s \"%s:%c", ASM_STABS_OP, |
---|
2174 | IDENTIFIER_POINTER (DECL_NAME (parms)), |
---|
2175 | regparm_letter); |
---|
2176 | } |
---|
2177 | else |
---|
2178 | { |
---|
2179 | current_sym_nchars = 8; |
---|
2180 | fprintf (asmfile, "%s \"(anon):%c", ASM_STABS_OP, |
---|
2181 | regparm_letter); |
---|
2182 | } |
---|
2183 | |
---|
2184 | dbxout_type (parm_type, 0, 0); |
---|
2185 | dbxout_finish_symbol (parms); |
---|
2186 | } |
---|
2187 | else if (GET_CODE (DECL_RTL (parms)) == MEM |
---|
2188 | && GET_CODE (XEXP (DECL_RTL (parms), 0)) == REG |
---|
2189 | && REGNO (XEXP (DECL_RTL (parms), 0)) != HARD_FRAME_POINTER_REGNUM |
---|
2190 | && REGNO (XEXP (DECL_RTL (parms), 0)) != STACK_POINTER_REGNUM |
---|
2191 | #if ARG_POINTER_REGNUM != HARD_FRAME_POINTER_REGNUM |
---|
2192 | && REGNO (XEXP (DECL_RTL (parms), 0)) != ARG_POINTER_REGNUM |
---|
2193 | #endif |
---|
2194 | ) |
---|
2195 | { |
---|
2196 | /* Parm was passed via invisible reference. |
---|
2197 | That is, its address was passed in a register. |
---|
2198 | Output it as if it lived in that register. |
---|
2199 | The debugger will know from the type |
---|
2200 | that it was actually passed by invisible reference. */ |
---|
2201 | |
---|
2202 | char regparm_letter; |
---|
2203 | /* Parm passed in registers and lives in registers or nowhere. */ |
---|
2204 | |
---|
2205 | current_sym_code = DBX_REGPARM_STABS_CODE; |
---|
2206 | if (use_gnu_debug_info_extensions) |
---|
2207 | regparm_letter = GDB_INV_REF_REGPARM_STABS_LETTER; |
---|
2208 | else |
---|
2209 | regparm_letter = DBX_REGPARM_STABS_LETTER; |
---|
2210 | |
---|
2211 | /* DECL_RTL looks like (MEM (REG...). Get the register number. |
---|
2212 | If it is an unallocated pseudo-reg, then use the register where |
---|
2213 | it was passed instead. */ |
---|
2214 | if (REGNO (XEXP (DECL_RTL (parms), 0)) >= 0 |
---|
2215 | && REGNO (XEXP (DECL_RTL (parms), 0)) < FIRST_PSEUDO_REGISTER) |
---|
2216 | current_sym_value = REGNO (XEXP (DECL_RTL (parms), 0)); |
---|
2217 | else |
---|
2218 | current_sym_value = REGNO (DECL_INCOMING_RTL (parms)); |
---|
2219 | |
---|
2220 | current_sym_addr = 0; |
---|
2221 | |
---|
2222 | FORCE_TEXT; |
---|
2223 | if (DECL_NAME (parms)) |
---|
2224 | { |
---|
2225 | current_sym_nchars = 2 + strlen (IDENTIFIER_POINTER (DECL_NAME (parms))); |
---|
2226 | |
---|
2227 | fprintf (asmfile, "%s \"%s:%c", ASM_STABS_OP, |
---|
2228 | IDENTIFIER_POINTER (DECL_NAME (parms)), |
---|
2229 | regparm_letter); |
---|
2230 | } |
---|
2231 | else |
---|
2232 | { |
---|
2233 | current_sym_nchars = 8; |
---|
2234 | fprintf (asmfile, "%s \"(anon):%c", ASM_STABS_OP, |
---|
2235 | regparm_letter); |
---|
2236 | } |
---|
2237 | |
---|
2238 | dbxout_type (TREE_TYPE (parms), 0, 0); |
---|
2239 | dbxout_finish_symbol (parms); |
---|
2240 | } |
---|
2241 | else if (GET_CODE (DECL_RTL (parms)) == MEM |
---|
2242 | && XEXP (DECL_RTL (parms), 0) != const0_rtx |
---|
2243 | /* ??? A constant address for a parm can happen |
---|
2244 | when the reg it lives in is equiv to a constant in memory. |
---|
2245 | Should make this not happen, after 2.4. */ |
---|
2246 | && ! CONSTANT_P (XEXP (DECL_RTL (parms), 0))) |
---|
2247 | { |
---|
2248 | /* Parm was passed in registers but lives on the stack. */ |
---|
2249 | |
---|
2250 | current_sym_code = N_PSYM; |
---|
2251 | /* DECL_RTL looks like (MEM (PLUS (REG...) (CONST_INT...))), |
---|
2252 | in which case we want the value of that CONST_INT, |
---|
2253 | or (MEM (REG ...)) or (MEM (MEM ...)), |
---|
2254 | in which case we use a value of zero. */ |
---|
2255 | if (GET_CODE (XEXP (DECL_RTL (parms), 0)) == REG |
---|
2256 | || GET_CODE (XEXP (DECL_RTL (parms), 0)) == MEM) |
---|
2257 | current_sym_value = 0; |
---|
2258 | else |
---|
2259 | current_sym_value = INTVAL (XEXP (XEXP (DECL_RTL (parms), 0), 1)); |
---|
2260 | current_sym_addr = 0; |
---|
2261 | |
---|
2262 | FORCE_TEXT; |
---|
2263 | if (DECL_NAME (parms)) |
---|
2264 | { |
---|
2265 | current_sym_nchars = 2 + strlen (IDENTIFIER_POINTER (DECL_NAME (parms))); |
---|
2266 | |
---|
2267 | fprintf (asmfile, "%s \"%s:%c", ASM_STABS_OP, |
---|
2268 | IDENTIFIER_POINTER (DECL_NAME (parms)), |
---|
2269 | DBX_MEMPARM_STABS_LETTER); |
---|
2270 | } |
---|
2271 | else |
---|
2272 | { |
---|
2273 | current_sym_nchars = 8; |
---|
2274 | fprintf (asmfile, "%s \"(anon):%c", ASM_STABS_OP, |
---|
2275 | DBX_MEMPARM_STABS_LETTER); |
---|
2276 | } |
---|
2277 | |
---|
2278 | current_sym_value |
---|
2279 | = DEBUGGER_ARG_OFFSET (current_sym_value, |
---|
2280 | XEXP (DECL_RTL (parms), 0)); |
---|
2281 | dbxout_type (TREE_TYPE (parms), 0, 0); |
---|
2282 | dbxout_finish_symbol (parms); |
---|
2283 | } |
---|
2284 | } |
---|
2285 | } |
---|
2286 | |
---|
2287 | /* Output definitions for the places where parms live during the function, |
---|
2288 | when different from where they were passed, when the parms were passed |
---|
2289 | in memory. |
---|
2290 | |
---|
2291 | It is not useful to do this for parms passed in registers |
---|
2292 | that live during the function in different registers, because it is |
---|
2293 | impossible to look in the passed register for the passed value, |
---|
2294 | so we use the within-the-function register to begin with. |
---|
2295 | |
---|
2296 | PARMS is a chain of PARM_DECL nodes. */ |
---|
2297 | |
---|
2298 | void |
---|
2299 | dbxout_reg_parms (parms) |
---|
2300 | tree parms; |
---|
2301 | { |
---|
2302 | for (; parms; parms = TREE_CHAIN (parms)) |
---|
2303 | if (DECL_NAME (parms) && PARM_PASSED_IN_MEMORY (parms)) |
---|
2304 | { |
---|
2305 | dbxout_prepare_symbol (parms); |
---|
2306 | |
---|
2307 | /* Report parms that live in registers during the function |
---|
2308 | but were passed in memory. */ |
---|
2309 | if (GET_CODE (DECL_RTL (parms)) == REG |
---|
2310 | && REGNO (DECL_RTL (parms)) >= 0 |
---|
2311 | && REGNO (DECL_RTL (parms)) < FIRST_PSEUDO_REGISTER) |
---|
2312 | dbxout_symbol_location (parms, TREE_TYPE (parms), |
---|
2313 | 0, DECL_RTL (parms)); |
---|
2314 | else if (GET_CODE (DECL_RTL (parms)) == CONCAT) |
---|
2315 | dbxout_symbol_location (parms, TREE_TYPE (parms), |
---|
2316 | 0, DECL_RTL (parms)); |
---|
2317 | /* Report parms that live in memory but not where they were passed. */ |
---|
2318 | else if (GET_CODE (DECL_RTL (parms)) == MEM |
---|
2319 | && ! rtx_equal_p (DECL_RTL (parms), DECL_INCOMING_RTL (parms))) |
---|
2320 | dbxout_symbol_location (parms, TREE_TYPE (parms), |
---|
2321 | 0, DECL_RTL (parms)); |
---|
2322 | } |
---|
2323 | } |
---|
2324 | |
---|
2325 | /* Given a chain of ..._TYPE nodes (as come in a parameter list), |
---|
2326 | output definitions of those names, in raw form */ |
---|
2327 | |
---|
2328 | void |
---|
2329 | dbxout_args (args) |
---|
2330 | tree args; |
---|
2331 | { |
---|
2332 | while (args) |
---|
2333 | { |
---|
2334 | putc (',', asmfile); |
---|
2335 | dbxout_type (TREE_VALUE (args), 0, 0); |
---|
2336 | CHARS (1); |
---|
2337 | args = TREE_CHAIN (args); |
---|
2338 | } |
---|
2339 | } |
---|
2340 | |
---|
2341 | /* Given a chain of ..._TYPE nodes, |
---|
2342 | find those which have typedef names and output those names. |
---|
2343 | This is to ensure those types get output. */ |
---|
2344 | |
---|
2345 | void |
---|
2346 | dbxout_types (types) |
---|
2347 | register tree types; |
---|
2348 | { |
---|
2349 | while (types) |
---|
2350 | { |
---|
2351 | if (TYPE_NAME (types) |
---|
2352 | && TREE_CODE (TYPE_NAME (types)) == TYPE_DECL |
---|
2353 | && ! TREE_ASM_WRITTEN (TYPE_NAME (types))) |
---|
2354 | dbxout_symbol (TYPE_NAME (types), 1); |
---|
2355 | types = TREE_CHAIN (types); |
---|
2356 | } |
---|
2357 | } |
---|
2358 | |
---|
2359 | /* Output everything about a symbol block (a BLOCK node |
---|
2360 | that represents a scope level), |
---|
2361 | including recursive output of contained blocks. |
---|
2362 | |
---|
2363 | BLOCK is the BLOCK node. |
---|
2364 | DEPTH is its depth within containing symbol blocks. |
---|
2365 | ARGS is usually zero; but for the outermost block of the |
---|
2366 | body of a function, it is a chain of PARM_DECLs for the function parameters. |
---|
2367 | We output definitions of all the register parms |
---|
2368 | as if they were local variables of that block. |
---|
2369 | |
---|
2370 | If -g1 was used, we count blocks just the same, but output nothing |
---|
2371 | except for the outermost block. |
---|
2372 | |
---|
2373 | Actually, BLOCK may be several blocks chained together. |
---|
2374 | We handle them all in sequence. */ |
---|
2375 | |
---|
2376 | static void |
---|
2377 | dbxout_block (block, depth, args) |
---|
2378 | register tree block; |
---|
2379 | int depth; |
---|
2380 | tree args; |
---|
2381 | { |
---|
2382 | int blocknum; |
---|
2383 | |
---|
2384 | while (block) |
---|
2385 | { |
---|
2386 | /* Ignore blocks never expanded or otherwise marked as real. */ |
---|
2387 | if (TREE_USED (block)) |
---|
2388 | { |
---|
2389 | #ifndef DBX_LBRAC_FIRST |
---|
2390 | /* In dbx format, the syms of a block come before the N_LBRAC. */ |
---|
2391 | if (debug_info_level != DINFO_LEVEL_TERSE || depth == 0) |
---|
2392 | dbxout_syms (BLOCK_VARS (block)); |
---|
2393 | if (args) |
---|
2394 | dbxout_reg_parms (args); |
---|
2395 | #endif |
---|
2396 | |
---|
2397 | /* Now output an N_LBRAC symbol to represent the beginning of |
---|
2398 | the block. Use the block's tree-walk order to generate |
---|
2399 | the assembler symbols LBBn and LBEn |
---|
2400 | that final will define around the code in this block. */ |
---|
2401 | if (depth > 0 && debug_info_level != DINFO_LEVEL_TERSE) |
---|
2402 | { |
---|
2403 | char buf[20]; |
---|
2404 | blocknum = next_block_number++; |
---|
2405 | ASM_GENERATE_INTERNAL_LABEL (buf, "LBB", blocknum); |
---|
2406 | |
---|
2407 | if (BLOCK_HANDLER_BLOCK (block)) |
---|
2408 | { |
---|
2409 | /* A catch block. Must precede N_LBRAC. */ |
---|
2410 | tree decl = BLOCK_VARS (block); |
---|
2411 | while (decl) |
---|
2412 | { |
---|
2413 | #ifdef DBX_OUTPUT_CATCH |
---|
2414 | DBX_OUTPUT_CATCH (asmfile, decl, buf); |
---|
2415 | #else |
---|
2416 | fprintf (asmfile, "%s \"%s:C1\",%d,0,0,", ASM_STABS_OP, |
---|
2417 | IDENTIFIER_POINTER (DECL_NAME (decl)), N_CATCH); |
---|
2418 | assemble_name (asmfile, buf); |
---|
2419 | fprintf (asmfile, "\n"); |
---|
2420 | #endif |
---|
2421 | decl = TREE_CHAIN (decl); |
---|
2422 | } |
---|
2423 | } |
---|
2424 | |
---|
2425 | #ifdef DBX_OUTPUT_LBRAC |
---|
2426 | DBX_OUTPUT_LBRAC (asmfile, buf); |
---|
2427 | #else |
---|
2428 | fprintf (asmfile, "%s %d,0,0,", ASM_STABN_OP, N_LBRAC); |
---|
2429 | assemble_name (asmfile, buf); |
---|
2430 | #if DBX_BLOCKS_FUNCTION_RELATIVE |
---|
2431 | fputc ('-', asmfile); |
---|
2432 | assemble_name (asmfile, XSTR (XEXP (DECL_RTL (current_function_decl), 0), 0)); |
---|
2433 | #endif |
---|
2434 | fprintf (asmfile, "\n"); |
---|
2435 | #endif |
---|
2436 | } |
---|
2437 | else if (depth > 0) |
---|
2438 | /* Count blocks the same way regardless of debug_info_level. */ |
---|
2439 | next_block_number++; |
---|
2440 | |
---|
2441 | #ifdef DBX_LBRAC_FIRST |
---|
2442 | /* On some weird machines, the syms of a block |
---|
2443 | come after the N_LBRAC. */ |
---|
2444 | if (debug_info_level != DINFO_LEVEL_TERSE || depth == 0) |
---|
2445 | dbxout_syms (BLOCK_VARS (block)); |
---|
2446 | if (args) |
---|
2447 | dbxout_reg_parms (args); |
---|
2448 | #endif |
---|
2449 | |
---|
2450 | /* Output the subblocks. */ |
---|
2451 | dbxout_block (BLOCK_SUBBLOCKS (block), depth + 1, NULL_TREE); |
---|
2452 | |
---|
2453 | /* Refer to the marker for the end of the block. */ |
---|
2454 | if (depth > 0 && debug_info_level != DINFO_LEVEL_TERSE) |
---|
2455 | { |
---|
2456 | char buf[20]; |
---|
2457 | ASM_GENERATE_INTERNAL_LABEL (buf, "LBE", blocknum); |
---|
2458 | #ifdef DBX_OUTPUT_RBRAC |
---|
2459 | DBX_OUTPUT_RBRAC (asmfile, buf); |
---|
2460 | #else |
---|
2461 | fprintf (asmfile, "%s %d,0,0,", ASM_STABN_OP, N_RBRAC); |
---|
2462 | assemble_name (asmfile, buf); |
---|
2463 | #if DBX_BLOCKS_FUNCTION_RELATIVE |
---|
2464 | fputc ('-', asmfile); |
---|
2465 | assemble_name (asmfile, XSTR (XEXP (DECL_RTL (current_function_decl), 0), 0)); |
---|
2466 | #endif |
---|
2467 | fprintf (asmfile, "\n"); |
---|
2468 | #endif |
---|
2469 | } |
---|
2470 | } |
---|
2471 | block = BLOCK_CHAIN (block); |
---|
2472 | } |
---|
2473 | } |
---|
2474 | |
---|
2475 | /* Output the information about a function and its arguments and result. |
---|
2476 | Usually this follows the function's code, |
---|
2477 | but on some systems, it comes before. */ |
---|
2478 | |
---|
2479 | static void |
---|
2480 | dbxout_really_begin_function (decl) |
---|
2481 | tree decl; |
---|
2482 | { |
---|
2483 | dbxout_symbol (decl, 0); |
---|
2484 | dbxout_parms (DECL_ARGUMENTS (decl)); |
---|
2485 | if (DECL_NAME (DECL_RESULT (decl)) != 0) |
---|
2486 | dbxout_symbol (DECL_RESULT (decl), 1); |
---|
2487 | } |
---|
2488 | |
---|
2489 | /* Called at beginning of output of function definition. */ |
---|
2490 | |
---|
2491 | void |
---|
2492 | dbxout_begin_function (decl) |
---|
2493 | tree decl; |
---|
2494 | { |
---|
2495 | #ifdef DBX_FUNCTION_FIRST |
---|
2496 | dbxout_really_begin_function (decl); |
---|
2497 | #endif |
---|
2498 | } |
---|
2499 | |
---|
2500 | /* Output dbx data for a function definition. |
---|
2501 | This includes a definition of the function name itself (a symbol), |
---|
2502 | definitions of the parameters (locating them in the parameter list) |
---|
2503 | and then output the block that makes up the function's body |
---|
2504 | (including all the auto variables of the function). */ |
---|
2505 | |
---|
2506 | void |
---|
2507 | dbxout_function (decl) |
---|
2508 | tree decl; |
---|
2509 | { |
---|
2510 | #ifndef DBX_FUNCTION_FIRST |
---|
2511 | dbxout_really_begin_function (decl); |
---|
2512 | #endif |
---|
2513 | dbxout_block (DECL_INITIAL (decl), 0, DECL_ARGUMENTS (decl)); |
---|
2514 | #ifdef DBX_OUTPUT_FUNCTION_END |
---|
2515 | DBX_OUTPUT_FUNCTION_END (asmfile, decl); |
---|
2516 | #endif |
---|
2517 | } |
---|
2518 | #endif /* DBX_DEBUGGING_INFO */ |
---|