1 | /* XCOFF definitions. These are needed in dbxout.c, final.c, |
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2 | and xcoffout.h. */ |
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3 | |
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4 | #define ASM_STABS_OP ".stabx" |
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5 | |
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6 | /* Tags and typedefs are C_DECL in XCOFF, not C_LSYM. */ |
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7 | |
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8 | #define DBX_TYPE_DECL_STABS_CODE N_DECL |
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9 | |
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10 | /* Use the XCOFF predefined type numbers. */ |
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11 | |
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12 | /* ??? According to metin, typedef stabx must go in text control section, |
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13 | but he did not make this changes everywhere where such typedef stabx |
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14 | can be emitted, so it is really needed or not? */ |
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15 | |
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16 | #define DBX_OUTPUT_STANDARD_TYPES(SYMS) \ |
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17 | { \ |
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18 | text_section (); \ |
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19 | xcoff_output_standard_types (SYMS); \ |
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20 | } |
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21 | |
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22 | /* Any type with a negative type index has already been output. */ |
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23 | |
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24 | #define DBX_TYPE_DEFINED(TYPE) (TYPE_SYMTAB_ADDRESS (TYPE) < 0) |
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25 | |
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26 | /* Must use N_STSYM for static const variables (those in the text section) |
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27 | instead of N_FUN. */ |
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28 | |
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29 | #define DBX_STATIC_CONST_VAR_CODE N_STSYM |
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30 | |
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31 | /* For static variables, output code to define the start of a static block. |
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32 | |
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33 | ??? The IBM rs6000/AIX assembler has a bug that causes bss block debug |
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34 | info to be occasionally lost. A simple example is this: |
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35 | int a; static int b; |
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36 | The commands `gcc -g -c tmp.c; dump -t tmp.o' gives |
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37 | [10] m 0x00000016 1 0 0x8f 0x0000 .bs |
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38 | [11] m 0x00000000 1 0 0x90 0x0000 .es |
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39 | ... |
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40 | [21] m 0x00000000 -2 0 0x85 0x0000 b:S-1 |
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41 | which is wrong. The `b:S-1' must be between the `.bs' and `.es'. |
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42 | We can apparently work around the problem by forcing the text section |
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43 | (even if we are already in the text section) immediately before outputting |
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44 | the `.bs'. This should be fixed in the next major AIX release (3.3?). */ |
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45 | |
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46 | #define DBX_STATIC_BLOCK_START(ASMFILE,CODE) \ |
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47 | { \ |
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48 | if ((CODE) == N_STSYM) \ |
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49 | fprintf ((ASMFILE), "\t.bs\t%s[RW]\n", xcoff_private_data_section_name);\ |
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50 | else if ((CODE) == N_LCSYM) \ |
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51 | { \ |
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52 | fprintf ((ASMFILE), "%s\n", TEXT_SECTION_ASM_OP); \ |
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53 | fprintf ((ASMFILE), "\t.bs\t%s\n", xcoff_bss_section_name); \ |
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54 | } \ |
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55 | } |
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56 | |
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57 | /* For static variables, output code to define the end of a static block. */ |
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58 | |
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59 | #define DBX_STATIC_BLOCK_END(ASMFILE,CODE) \ |
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60 | { \ |
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61 | if (current_sym_code == N_STSYM || current_sym_code == N_LCSYM) \ |
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62 | fprintf (asmfile, "\t.es\n"); \ |
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63 | } |
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64 | |
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65 | /* We must use N_RPYSM instead of N_RSYM for register parameters. */ |
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66 | |
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67 | #define DBX_REGPARM_STABS_CODE N_RPSYM |
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68 | |
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69 | /* We must use 'R' instead of 'P' for register parameters. */ |
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70 | |
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71 | #define DBX_REGPARM_STABS_LETTER 'R' |
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72 | |
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73 | /* Define our own finish symbol function, since xcoff stabs have their |
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74 | own different format. */ |
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75 | |
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76 | #define DBX_FINISH_SYMBOL(SYM) \ |
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77 | { \ |
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78 | if (current_sym_addr && current_sym_code == N_FUN) \ |
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79 | fprintf (asmfile, "\",."); \ |
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80 | else \ |
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81 | fprintf (asmfile, "\","); \ |
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82 | /* If we are writing a function name, we must ensure that \ |
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83 | there is no storage-class suffix on the name. */ \ |
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84 | if (current_sym_addr && current_sym_code == N_FUN \ |
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85 | && GET_CODE (current_sym_addr) == SYMBOL_REF) \ |
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86 | { \ |
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87 | char *_p = XSTR (current_sym_addr, 0); \ |
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88 | if (*_p == '*') \ |
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89 | fprintf (asmfile, "%s", _p+1); \ |
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90 | else \ |
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91 | for (; *_p != '[' && *_p; _p++) \ |
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92 | fprintf (asmfile, "%c", *_p); \ |
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93 | } \ |
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94 | else if (current_sym_addr) \ |
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95 | output_addr_const (asmfile, current_sym_addr); \ |
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96 | else if (current_sym_code == N_GSYM) \ |
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97 | assemble_name (asmfile, XSTR (XEXP (DECL_RTL (sym), 0), 0)); \ |
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98 | else \ |
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99 | fprintf (asmfile, "%d", current_sym_value); \ |
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100 | fprintf (asmfile, ",%d,0\n", stab_to_sclass (current_sym_code)); \ |
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101 | } |
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102 | |
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103 | /* These are IBM XCOFF extensions we need to reference in dbxout.c |
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104 | and xcoffout.c. */ |
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105 | |
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106 | /* AIX XCOFF uses this for typedefs. This can have any value, since it is |
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107 | only used for translation into a C_DECL storage class. */ |
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108 | #ifndef N_DECL |
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109 | #define N_DECL 0x8c |
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110 | #endif |
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111 | /* AIX XCOFF uses this for parameters passed in registers. This can have |
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112 | any value, since it is only used for translation into a C_RPSYM storage |
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113 | class. */ |
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114 | #ifndef N_RPSYM |
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115 | #define N_RPSYM 0x8e |
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116 | #endif |
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117 | |
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118 | /* The line number of the beginning of the current function. |
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119 | xcoffout.c needs this so that it can output relative linenumbers. */ |
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120 | |
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121 | extern int xcoff_begin_function_line; |
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122 | |
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123 | /* Name of the current include file. */ |
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124 | |
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125 | extern char *xcoff_current_include_file; |
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126 | |
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127 | /* Name of the current function file. This is the file the `.bf' is |
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128 | emitted from. In case a line is emitted from a different file, |
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129 | (by including that file of course), then the line number will be |
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130 | absolute. */ |
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131 | |
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132 | extern char *xcoff_current_function_file; |
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133 | |
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134 | /* Names of bss and data sections. These should be unique names for each |
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135 | compilation unit. */ |
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136 | |
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137 | extern char *xcoff_bss_section_name; |
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138 | extern char *xcoff_private_data_section_name; |
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139 | extern char *xcoff_read_only_section_name; |
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140 | |
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141 | /* Last source file name mentioned in a NOTE insn. */ |
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142 | |
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143 | extern char *xcoff_lastfile; |
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144 | |
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145 | /* Don't write out path name for main source file. */ |
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146 | #define DBX_OUTPUT_MAIN_SOURCE_DIRECTORY(FILE,FILENAME) |
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147 | |
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148 | /* Write out main source file name using ".file" rather than ".stabs". |
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149 | We don't actually do this here, because the assembler gets confused if there |
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150 | is more than one .file directive. ASM_FILE_START in config/rs6000/rs6000.h |
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151 | is already emitting a .file directory, so we don't output one here also. |
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152 | Initialize xcoff_lastfile. */ |
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153 | #define DBX_OUTPUT_MAIN_SOURCE_FILENAME(FILE,FILENAME) \ |
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154 | xcoff_lastfile = input_file_name |
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155 | |
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156 | /* If we are still in an include file, its end must be marked. */ |
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157 | #define DBX_OUTPUT_MAIN_SOURCE_FILE_END(FILE, FILENAME) \ |
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158 | { \ |
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159 | if (xcoff_current_include_file) \ |
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160 | { \ |
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161 | fprintf (FILE, "\t.ei\t"); \ |
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162 | output_quoted_string (FILE, xcoff_current_include_file); \ |
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163 | fprintf (FILE, "\n"); \ |
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164 | xcoff_current_include_file = NULL; \ |
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165 | } \ |
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166 | } |
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167 | |
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168 | /* Do not break .stabs pseudos into continuations. */ |
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169 | #define DBX_CONTIN_LENGTH 0 |
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170 | |
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171 | /* Don't try to use the `x' type-cross-reference character in DBX data. |
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172 | Also has the consequence of putting each struct, union or enum |
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173 | into a separate .stabs, containing only cross-refs to the others. */ |
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174 | #define DBX_NO_XREFS |
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175 | |
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176 | /* We must put stabs in the text section. If we don't the assembler |
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177 | won't handle them correctly; it will sometimes put stabs where gdb |
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178 | can't find them. */ |
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179 | |
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180 | #define DEBUG_SYMS_TEXT |
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