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1 /* Operating system specific defines to be used when targeting GCC for any
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2 Solaris 2 system.
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3 Copyright 2002, 2003, 2004, 2007, 2008 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 /* We use stabs-in-elf for debugging, because that is what the native
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22 toolchain uses. */
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23 #undef PREFERRED_DEBUGGING_TYPE
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24 #define PREFERRED_DEBUGGING_TYPE DBX_DEBUG
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25
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26 /* Solaris 2 (at least as of 2.5.1) uses a 32-bit wchar_t. */
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27 #undef WCHAR_TYPE
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28 #define WCHAR_TYPE "long int"
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29
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30 #undef WCHAR_TYPE_SIZE
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31 #define WCHAR_TYPE_SIZE BITS_PER_WORD
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32
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33 /* Solaris 2 uses a wint_t different from the default. This is required
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34 by the SCD 2.4.1, p. 6-83, Figure 6-66. */
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35 #undef WINT_TYPE
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36 #define WINT_TYPE "long int"
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37
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38 #undef WINT_TYPE_SIZE
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39 #define WINT_TYPE_SIZE BITS_PER_WORD
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40
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41 #define TARGET_HANDLE_PRAGMA_REDEFINE_EXTNAME 1
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42
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43 /* ??? Note: in order for -compat-bsd to work fully,
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44 we must somehow arrange to fixincludes /usr/ucbinclude
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45 and put the result in $(libsubdir)/ucbinclude. */
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46
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47 #undef CPP_SUBTARGET_SPEC
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48 #define CPP_SUBTARGET_SPEC "\
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49 %{pthreads|pthread:-D_REENTRANT -D_PTHREADS} \
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50 %{!pthreads:%{!pthread:%{threads:-D_REENTRANT -D_SOLARIS_THREADS}}} \
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51 %{compat-bsd:-iwithprefixbefore ucbinclude -I/usr/ucbinclude} \
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52 "
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53
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54 /* Names to predefine in the preprocessor for this target machine. */
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55 #define TARGET_SUB_OS_CPP_BUILTINS()
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56 #define TARGET_OS_CPP_BUILTINS() \
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57 do { \
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58 builtin_define_std ("unix"); \
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59 builtin_define_std ("sun"); \
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60 builtin_define ("__svr4__"); \
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61 builtin_define ("__SVR4"); \
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62 builtin_assert ("system=unix"); \
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63 builtin_assert ("system=svr4"); \
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64 /* For C++ we need to add some additional macro \
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65 definitions required by the C++ standard \
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66 library. */ \
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67 if (c_dialect_cxx ()) \
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68 { \
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69 builtin_define ("_XOPEN_SOURCE=500"); \
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70 builtin_define ("_LARGEFILE_SOURCE=1"); \
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71 builtin_define ("_LARGEFILE64_SOURCE=1"); \
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72 builtin_define ("__EXTENSIONS__"); \
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73 } \
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74 TARGET_SUB_OS_CPP_BUILTINS(); \
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75 } while (0)
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76
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77 /* The system headers under Solaris 2 are C++-aware since 2.0. */
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78 #define NO_IMPLICIT_EXTERN_C
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79
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80 /* The sun bundled assembler doesn't accept -Yd, (and neither does gas).
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81 It's safe to pass -s always, even if -g is not used. */
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82 #undef ASM_SPEC
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83 #define ASM_SPEC "\
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84 %{v:-V} %{Qy:} %{!Qn:-Qy} %{n} %{T} %{Ym,*} %{Wa,*:%*} -s \
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85 %{fpic|fpie|fPIC|fPIE:-K PIC} \
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86 %(asm_cpu) \
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87 "
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88
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89 /* We don't use the standard LIB_SPEC only because we don't yet support c++. */
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90 #undef LIB_SPEC
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91 #define LIB_SPEC \
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92 "%{compat-bsd:-lucb -lsocket -lnsl -lelf -laio} \
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93 %{!shared:\
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94 %{!symbolic:\
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95 %{pthreads|pthread:-lpthread} \
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96 %{!pthreads:%{!pthread:%{threads:-lthread}}} \
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97 %{p|pg:-ldl} -lc}}"
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98
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99 #undef ENDFILE_SPEC
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100 #define ENDFILE_SPEC "crtend.o%s crtn.o%s"
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101
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102 /* We don't use the standard svr4 STARTFILE_SPEC because it's wrong for us. */
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103 #undef STARTFILE_SPEC
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104 #define STARTFILE_SPEC "%{!shared: \
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105 %{!symbolic: \
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106 %{p:mcrt1.o%s} \
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107 %{!p: \
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108 %{pg:gcrt1.o%s gmon.o%s} \
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109 %{!pg:crt1.o%s}}}} \
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110 crti.o%s %(startfile_arch) \
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111 crtbegin.o%s"
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112
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113 #undef STARTFILE_ARCH32_SPEC
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114 #define STARTFILE_ARCH32_SPEC "%{ansi:values-Xc.o%s} \
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115 %{!ansi:values-Xa.o%s}"
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116
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117 #undef STARTFILE_ARCH_SPEC
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118 #define STARTFILE_ARCH_SPEC STARTFILE_ARCH32_SPEC
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119
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120 #undef LINK_ARCH32_SPEC_BASE
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121 #define LINK_ARCH32_SPEC_BASE \
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122 "%{G:-G} \
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123 %{YP,*} \
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124 %{R*} \
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125 %{compat-bsd: \
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126 %{!YP,*:%{p|pg:-Y P,/usr/ucblib:/usr/ccs/lib/libp:/usr/lib/libp:/usr/ccs/lib:/usr/lib} \
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127 %{!p:%{!pg:-Y P,/usr/ucblib:/usr/ccs/lib:/usr/lib}}} \
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128 -R /usr/ucblib} \
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129 %{!compat-bsd: \
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130 %{!YP,*:%{p|pg:-Y P,/usr/ccs/lib/libp:/usr/lib/libp:/usr/ccs/lib:/usr/lib} \
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131 %{!p:%{!pg:-Y P,/usr/ccs/lib:/usr/lib}}}}"
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132
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133 #undef LINK_ARCH32_SPEC
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134 #define LINK_ARCH32_SPEC LINK_ARCH32_SPEC_BASE
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135
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136 #undef LINK_ARCH_SPEC
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137 #define LINK_ARCH_SPEC LINK_ARCH32_SPEC
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138
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139 /* This should be the same as in svr4.h, except with -R added. */
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140 #undef LINK_SPEC
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141 #define LINK_SPEC \
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142 "%{h*} %{v:-V} \
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143 %{b} \
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144 %{static:-dn -Bstatic} \
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145 %{shared:-G -dy %{!mimpure-text:-z text}} \
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146 %{symbolic:-Bsymbolic -G -dy -z text} \
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147 %(link_arch) \
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148 %{Qy:} %{!Qn:-Qy}"
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149
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150 /* The Solaris linker doesn't understand constructor priorities. (The
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151 GNU linker does support constructor priorities, so GNU ld
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152 configuration files for Solaris override this setting.) */
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153 #undef SUPPORTS_INIT_PRIORITY
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154 #define SUPPORTS_INIT_PRIORITY 0
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155
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156 /* This defines which switch letters take arguments.
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157 It is as in svr4.h but with -R added. */
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158 #undef SWITCH_TAKES_ARG
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159 #define SWITCH_TAKES_ARG(CHAR) \
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160 (DEFAULT_SWITCH_TAKES_ARG(CHAR) \
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161 || (CHAR) == 'R' \
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162 || (CHAR) == 'h' \
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163 || (CHAR) == 'z')
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164
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165 #define STDC_0_IN_SYSTEM_HEADERS 1
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166
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167 /*
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168 * Attempt to turn on access permissions for the stack.
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169 *
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170 * _SC_STACK_PROT is only defined for post 2.6, but we want this code
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171 * to run always. 2.6 can change the stack protection but has no way to
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172 * query it.
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173 *
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174 */
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175
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176 /* sys/mman.h is not present on some non-Solaris configurations
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177 that use sol2.h, so ENABLE_EXECUTE_STACK must use a magic
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178 number instead of the appropriate PROT_* flags. */
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179
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180 #define ENABLE_EXECUTE_STACK \
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181 \
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182 /* #define STACK_PROT_RWX (PROT_READ | PROT_WRITE | PROT_EXEC) */ \
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183 \
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184 static int need_enable_exec_stack; \
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185 \
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186 static void check_enabling(void) __attribute__ ((constructor)); \
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187 static void check_enabling(void) \
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188 { \
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189 extern long sysconf(int); \
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190 \
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191 int prot = (int) sysconf(515 /* _SC_STACK_PROT */); \
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192 if (prot != 7 /* STACK_PROT_RWX */) \
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193 need_enable_exec_stack = 1; \
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194 } \
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195 \
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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 if (!need_enable_exec_stack) \
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202 return; \
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203 else { \
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204 long size = getpagesize (); \
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205 long mask = ~(size-1); \
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206 char *page = (char *) (((long) addr) & mask); \
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207 char *end = (char *) ((((long) (addr + TRAMPOLINE_SIZE)) & mask) + size); \
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208 \
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209 if (mprotect (page, end - page, 7 /* STACK_PROT_RWX */) < 0) \
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210 perror ("mprotect of trampoline code"); \
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211 } \
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212 }
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213
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214 /* Support Solaris-specific format checking for cmn_err. */
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215 #define TARGET_N_FORMAT_TYPES 1
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216 #define TARGET_FORMAT_TYPES solaris_format_types
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217
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218 /* #pragma init and #pragma fini are implemented on top of init and
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219 fini attributes. */
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220 #define SOLARIS_ATTRIBUTE_TABLE \
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221 { "init", 0, 0, true, false, false, NULL }, \
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222 { "fini", 0, 0, true, false, false, NULL }
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223
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224 /* This is how to declare the size of a function. For Solaris, we output
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225 any .init or .fini entries here. */
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226 #undef ASM_DECLARE_FUNCTION_SIZE
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227 #define ASM_DECLARE_FUNCTION_SIZE(FILE, FNAME, DECL) \
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228 do \
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229 { \
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230 if (!flag_inhibit_size_directive) \
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231 ASM_OUTPUT_MEASURED_SIZE (FILE, FNAME); \
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232 solaris_output_init_fini (FILE, DECL); \
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233 } \
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234 while (0)
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235
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236 extern GTY(()) tree solaris_pending_aligns;
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237 extern GTY(()) tree solaris_pending_inits;
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238 extern GTY(()) tree solaris_pending_finis;
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239
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240 /* Allow macro expansion in #pragma pack. */
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241 #define HANDLE_PRAGMA_PACK_WITH_EXPANSION
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