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1 /* Base configuration file for all NetBSD targets.
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2 Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004,
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3 2007 Free Software Foundation, Inc.
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4
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5 This file is part of GCC.
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6
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7 GCC is free software; you can redistribute it and/or modify
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8 it under the terms of the GNU General Public License as published by
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9 the Free Software Foundation; either version 3, or (at your option)
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10 any later version.
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11
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12 GCC is distributed in the hope that it will be useful,
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13 but WITHOUT ANY WARRANTY; without even the implied warranty of
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14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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15 GNU General Public License for more details.
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16
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17 You should have received a copy of the GNU General Public License
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18 along with GCC; see the file COPYING3. If not see
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19 <http://www.gnu.org/licenses/>. */
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20
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21 /* TARGET_OS_CPP_BUILTINS() common to all NetBSD targets. */
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22 #define NETBSD_OS_CPP_BUILTINS_COMMON() \
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23 do \
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24 { \
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25 builtin_define ("__NetBSD__"); \
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26 builtin_define ("__unix__"); \
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27 builtin_assert ("system=bsd"); \
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28 builtin_assert ("system=unix"); \
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29 builtin_assert ("system=NetBSD"); \
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30 } \
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31 while (0)
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32
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33 /* CPP_SPEC parts common to all NetBSD targets. */
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34 #define NETBSD_CPP_SPEC \
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35 "%{posix:-D_POSIX_SOURCE} \
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36 %{pthread:-D_REENTRANT -D_PTHREADS}"
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37
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38 /* NETBSD_NATIVE is defined when gcc is integrated into the NetBSD
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39 source tree so it can be configured appropriately without using
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40 the GNU configure/build mechanism. */
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41
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42 #ifdef NETBSD_NATIVE
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43
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44 /* Look for the include files in the system-defined places. */
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45
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46 #undef GPLUSPLUS_INCLUDE_DIR
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47 #define GPLUSPLUS_INCLUDE_DIR "/usr/include/g++"
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48
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49 #undef GCC_INCLUDE_DIR
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50 #define GCC_INCLUDE_DIR "/usr/include"
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51
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52 #undef INCLUDE_DEFAULTS
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53 #define INCLUDE_DEFAULTS \
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54 { \
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55 { GPLUSPLUS_INCLUDE_DIR, "G++", 1, 1 }, \
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56 { GCC_INCLUDE_DIR, "GCC", 0, 0 }, \
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57 { 0, 0, 0, 0 } \
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58 }
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59
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60 /* Under NetBSD, the normal location of the compiler back ends is the
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61 /usr/libexec directory. */
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62
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63 #undef STANDARD_EXEC_PREFIX
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64 #define STANDARD_EXEC_PREFIX "/usr/libexec/"
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65
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66 /* Under NetBSD, the normal location of the various *crt*.o files is the
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67 /usr/lib directory. */
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68
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69 #undef STANDARD_STARTFILE_PREFIX
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70 #define STANDARD_STARTFILE_PREFIX "/usr/lib/"
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71
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72 #endif /* NETBSD_NATIVE */
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73
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74
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75 /* Provide a LIB_SPEC appropriate for NetBSD. Here we:
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76
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77 1. Select the appropriate set of libs, depending on whether we're
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78 profiling.
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79
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80 2. Include the pthread library if -pthread is specified (only
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81 if threads are enabled).
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82
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83 3. Include the posix library if -posix is specified.
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84
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85 FIXME: Could eliminate the duplication here if we were allowed to
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86 use string concatenation. */
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87
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88 #ifdef NETBSD_ENABLE_PTHREADS
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89 #define NETBSD_LIB_SPEC \
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90 "%{pthread: \
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91 %{!p: \
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92 %{!pg:-lpthread}} \
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93 %{p:-lpthread_p} \
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94 %{pg:-lpthread_p}} \
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95 %{posix: \
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96 %{!p: \
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97 %{!pg:-lposix}} \
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98 %{p:-lposix_p} \
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99 %{pg:-lposix_p}} \
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100 %{!shared: \
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101 %{!symbolic: \
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102 %{!p: \
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103 %{!pg:-lc}} \
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104 %{p:-lc_p} \
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105 %{pg:-lc_p}}}"
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106 #else
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107 #define NETBSD_LIB_SPEC \
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108 "%{posix: \
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109 %{!p: \
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110 %{!pg:-lposix}} \
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111 %{p:-lposix_p} \
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112 %{pg:-lposix_p}} \
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113 %{!shared: \
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114 %{!symbolic: \
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115 %{!p: \
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116 %{!pg:-lc}} \
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117 %{p:-lc_p} \
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118 %{pg:-lc_p}}}"
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119 #endif
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120
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121 #undef LIB_SPEC
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122 #define LIB_SPEC NETBSD_LIB_SPEC
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123
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124 /* Provide a LIBGCC_SPEC appropriate for NetBSD. We also want to exclude
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125 libgcc with -symbolic. */
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126
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127 #ifdef NETBSD_NATIVE
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128 #define NETBSD_LIBGCC_SPEC \
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129 "%{!symbolic: \
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130 %{!shared: \
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131 %{!p: \
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132 %{!pg: -lgcc}}} \
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133 %{shared: -lgcc_pic} \
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134 %{p: -lgcc_p} \
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135 %{pg: -lgcc_p}}"
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136 #else
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137 #define NETBSD_LIBGCC_SPEC "%{!shared:%{!symbolic: -lgcc}}"
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138 #endif
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139
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140 #undef LIBGCC_SPEC
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141 #define LIBGCC_SPEC NETBSD_LIBGCC_SPEC
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142
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143 /* When building shared libraries, the initialization and finalization
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144 functions for the library are .init and .fini respectively. */
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145
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146 #define COLLECT_SHARED_INIT_FUNC(STREAM,FUNC) \
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147 do { \
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148 fprintf ((STREAM), "void __init() __asm__ (\".init\");"); \
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149 fprintf ((STREAM), "void __init() {\n\t%s();\n}\n", (FUNC)); \
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150 } while (0)
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151
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152 #define COLLECT_SHARED_FINI_FUNC(STREAM,FUNC) \
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153 do { \
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154 fprintf ((STREAM), "void __fini() __asm__ (\".fini\");"); \
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155 fprintf ((STREAM), "void __fini() {\n\t%s();\n}\n", (FUNC)); \
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156 } while (0)
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157
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158 #undef TARGET_POSIX_IO
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159 #define TARGET_POSIX_IO
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160
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161 /* Handle #pragma weak and #pragma pack. */
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162
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163 #define HANDLE_SYSV_PRAGMA 1
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164
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165 /* Don't assume anything about the header files. */
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166 #undef NO_IMPLICIT_EXTERN_C
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167 #define NO_IMPLICIT_EXTERN_C 1
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168
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169 /* Define some types that are the same on all NetBSD platforms,
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170 making them agree with <machine/ansi.h>. */
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171
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172 #undef WCHAR_TYPE
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173 #define WCHAR_TYPE "int"
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174
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175 #undef WCHAR_TYPE_SIZE
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176 #define WCHAR_TYPE_SIZE 32
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177
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178 #undef WINT_TYPE
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179 #define WINT_TYPE "int"
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180
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181
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182 /* Attempt to turn on execute permission for the stack. This may be
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183 used by INITIALIZE_TRAMPOLINE of the target needs it (that is,
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184 if the target machine can change execute permissions on a page).
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185
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186 There is no way to query the execute permission of the stack, so
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187 we always issue the mprotect() call.
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188
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189 Note that we go out of our way to use namespace-non-invasive calls
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190 here. Unfortunately, there is no libc-internal name for mprotect().
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191
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192 Also note that no errors should be emitted by this code; it is considered
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193 dangerous for library calls to send messages to stdout/stderr. */
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194
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195 #define NETBSD_ENABLE_EXECUTE_STACK \
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196 extern void __enable_execute_stack (void *); \
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197 void \
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198 __enable_execute_stack (void *addr) \
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199 { \
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200 extern int mprotect (void *, size_t, int); \
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201 extern int __sysctl (int *, unsigned int, void *, size_t *, \
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202 void *, size_t); \
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203 \
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204 static int size; \
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205 static long mask; \
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206 \
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207 char *page, *end; \
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208 \
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209 if (size == 0) \
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210 { \
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211 int mib[2]; \
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212 size_t len; \
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213 \
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214 mib[0] = 6; /* CTL_HW */ \
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215 mib[1] = 7; /* HW_PAGESIZE */ \
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216 len = sizeof (size); \
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217 (void) __sysctl (mib, 2, &size, &len, NULL, 0); \
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218 mask = ~((long) size - 1); \
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219 } \
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220 \
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221 page = (char *) (((long) addr) & mask); \
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222 end = (char *) ((((long) (addr + TRAMPOLINE_SIZE)) & mask) + size); \
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223 \
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224 /* 7 == PROT_READ | PROT_WRITE | PROT_EXEC */ \
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225 (void) mprotect (page, end - page, 7); \
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226 }
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227
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228 /* Define this so we can compile MS code for use with WINE. */
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229 #define HANDLE_PRAGMA_PACK_PUSH_POP 1
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