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1 /* XCOFF definitions. These are needed in dbxout.c, final.c,
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2 and xcoffout.h.
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3 Copyright (C) 1998, 2000, 2002, 2003, 2004, 2007, 2008
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4 Free Software Foundation, Inc.
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5
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6 This file is part of GCC.
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7
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8 GCC is free software; you can redistribute it and/or modify it under
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9 the terms of the GNU General Public License as published by the Free
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10 Software Foundation; either version 3, or (at your option) any later
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11 version.
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12
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13 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
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14 WARRANTY; without even the implied warranty of MERCHANTABILITY or
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15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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16 for more details.
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17
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18 You should have received a copy of the GNU General Public License
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19 along with GCC; see the file COPYING3. If not see
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20 <http://www.gnu.org/licenses/>. */
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21
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22
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23 /* Tags and typedefs are C_DECL in XCOFF, not C_LSYM. */
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24
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25 #define DBX_TYPE_DECL_STABS_CODE N_DECL
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26
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27 /* Use the XCOFF predefined type numbers. */
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28
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29 #define DBX_ASSIGN_FUNDAMENTAL_TYPE_NUMBER(TYPE) \
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30 xcoff_assign_fundamental_type_number (TYPE)
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31
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32 /* Any type with a negative type index has already been output. */
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33
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34 #define DBX_TYPE_DEFINED(TYPE) (TYPE_SYMTAB_ADDRESS (TYPE) < 0)
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35
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36 /* Must use N_STSYM for static const variables (those in the text section)
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37 instead of N_FUN. */
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38
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39 #define DBX_STATIC_CONST_VAR_CODE N_STSYM
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40
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41 /* For static variables, output code to define the start of a static block. */
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42
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43 #define DBX_STATIC_BLOCK_START(ASMFILE,CODE) \
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44 { \
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45 if ((CODE) == N_STSYM) \
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46 fprintf ((ASMFILE), "\t.bs\t%s[RW]\n", xcoff_private_data_section_name);\
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47 else if ((CODE) == N_LCSYM) \
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48 fprintf ((ASMFILE), "\t.bs\t%s\n", xcoff_bss_section_name); \
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49 }
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50
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51 /* For static variables, output code to define the end of a static block. */
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52
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53 #define DBX_STATIC_BLOCK_END(ASMFILE,CODE) \
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54 { \
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55 if ((CODE) == N_STSYM || (CODE) == N_LCSYM) \
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56 fputs ("\t.es\n", (ASMFILE)); \
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57 }
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58
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59 /* We must use N_RPYSM instead of N_RSYM for register parameters. */
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60
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61 #define DBX_REGPARM_STABS_CODE N_RPSYM
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62
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63 /* We must use 'R' instead of 'P' for register parameters. */
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64
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65 #define DBX_REGPARM_STABS_LETTER 'R'
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66
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67 /* Define our own finish symbol function, since xcoff stabs have their
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68 own different format. */
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69
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70 #define DBX_FINISH_STABS(SYM, CODE, LINE, ADDR, LABEL, NUMBER) do { \
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71 if (ADDR) \
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72 { \
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73 /* If we are writing a function name, we must emit a dot in \
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74 order to refer to the function code, not its descriptor. */ \
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75 if (CODE == N_FUN) \
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76 putc ('.', asm_out_file); \
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77 \
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78 /* If we are writing a function name, we must ensure that \
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79 there is no storage-class suffix on the name. */ \
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80 if (CODE == N_FUN && GET_CODE (ADDR) == SYMBOL_REF) \
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81 { \
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82 const char *_p = XSTR (ADDR, 0); \
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83 if (*_p == '*') \
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84 fputs (_p+1, asm_out_file); \
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85 else \
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86 for (; *_p != '[' && *_p; _p++) \
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87 putc (*_p != '$' ? *_p : '_', asm_out_file); \
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88 } \
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89 else \
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90 output_addr_const (asm_out_file, ADDR); \
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91 } \
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92 /* Another special case: N_GSYM always gets the symbol name, \
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93 whether or not LABEL or NUMBER are set. */ \
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94 else if (CODE == N_GSYM) \
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95 assemble_name (asm_out_file, XSTR (XEXP (DECL_RTL (SYM), 0), 0)); \
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96 else if (LABEL) \
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97 assemble_name (asm_out_file, LABEL); \
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98 else \
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99 dbxout_int (NUMBER); \
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100 putc (',', asm_out_file); \
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101 dbxout_int (stab_to_sclass (CODE)); \
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102 fputs (",0\n", asm_out_file); \
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103 } while (0)
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104
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105 /* These are IBM XCOFF extensions we need to reference in dbxout.c
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106 and xcoffout.c. */
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107
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108 /* AIX XCOFF uses this for typedefs. This can have any value, since it is
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109 only used for translation into a C_DECL storage class. */
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110 #ifndef N_DECL
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111 #define N_DECL 0x8c
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112 #endif
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113 /* AIX XCOFF uses this for parameters passed in registers. This can have
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114 any value, since it is only used for translation into a C_RPSYM storage
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115 class. */
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116 #ifndef N_RPSYM
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117 #define N_RPSYM 0x8e
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118 #endif
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119
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120 /* Name of the current include file. */
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121
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122 extern const char *xcoff_current_include_file;
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123
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124 /* Names of bss and data sections. These should be unique names for each
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125 compilation unit. */
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126
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127 extern char *xcoff_bss_section_name;
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128 extern char *xcoff_private_data_section_name;
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129 extern char *xcoff_read_only_section_name;
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130
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131 /* Last source file name mentioned in a NOTE insn. */
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132
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133 extern const char *xcoff_lastfile;
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134
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135 /* Don't write out path name for main source file. */
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136 #define NO_DBX_MAIN_SOURCE_DIRECTORY 1
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137
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138 /* Write out main source file name using ".file" rather than ".stabs".
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139 We don't actually do this here, because the assembler gets confused if there
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140 is more than one .file directive. rs6000_xcoff_file_start is already
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141 emitting a .file directory, so we don't output one here also.
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142 Initialize xcoff_lastfile. */
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143 #define DBX_OUTPUT_MAIN_SOURCE_FILENAME(FILE,FILENAME) \
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144 xcoff_lastfile = (FILENAME)
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145
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146 /* If we are still in an include file, its end must be marked. */
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147 #define DBX_OUTPUT_MAIN_SOURCE_FILE_END(FILE, FILENAME) \
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148 do { \
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149 if (xcoff_current_include_file) \
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150 { \
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151 fputs ("\t.ei\t", (FILE)); \
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152 output_quoted_string ((FILE), xcoff_current_include_file); \
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153 putc ('\n', (FILE)); \
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154 xcoff_current_include_file = NULL; \
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155 } \
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156 } while (0)
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157
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158 /* Do not emit any marker for XCOFF until assembler allows XFT_CV. */
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159 #define NO_DBX_GCC_MARKER
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160
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161 /* Do not break .stabs pseudos into continuations. */
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162 #define DBX_CONTIN_LENGTH 0
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163
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164 /* Don't try to use the `x' type-cross-reference character in DBX data.
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165 Also has the consequence of putting each struct, union or enum
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166 into a separate .stabs, containing only cross-refs to the others. */
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167 #define DBX_NO_XREFS
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168
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169 /* We must put stabs in the text section. If we don't the assembler
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170 won't handle them correctly; it will sometimes put stabs where gdb
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171 can't find them. */
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172
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173 #define DEBUG_SYMS_TEXT
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174
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175 /* Prototype functions in xcoffout.c. */
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176
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177 extern int stab_to_sclass (int);
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178 extern void xcoffout_begin_prologue (unsigned int, const char *);
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179 extern void xcoffout_begin_block (unsigned, unsigned);
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180 extern void xcoffout_end_epilogue (unsigned int, const char *);
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181 extern void xcoffout_end_function (unsigned int);
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182 extern void xcoffout_end_block (unsigned, unsigned);
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183 extern int xcoff_assign_fundamental_type_number (tree);
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184 extern void xcoffout_declare_function (FILE *, tree, const char *);
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185 extern void xcoffout_source_line (unsigned int, const char *);
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