1 /* Operating system specific defines to be used when targeting GCC for any 2 Solaris 2 system. 3 Copyright 2002, 2003, 2004 Free Software Foundation, Inc. 4 5 This file is part of GCC. 6 7 GCC is free software; you can redistribute it and/or modify 8 it under the terms of the GNU General Public License as published by 9 the Free Software Foundation; either version 2, or (at your option) 10 any later version. 11 12 GCC is distributed in the hope that it will be useful, 13 but WITHOUT ANY WARRANTY; without even the implied warranty of 14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 GNU General Public License for more details. 16 17 You should have received a copy of the GNU General Public License 18 along with GCC; see the file COPYING. If not, write to 19 the Free Software Foundation, 51 Franklin Street, Fifth Floor, 20 Boston, MA 02110-1301, USA. */ 21 22 /* We use stabs-in-elf for debugging, because that is what the native 23 toolchain uses. */ 24 #undef PREFERRED_DEBUGGING_TYPE 25 #define PREFERRED_DEBUGGING_TYPE DBX_DEBUG 26 27 /* Solaris 2 (at least as of 2.5.1) uses a 32-bit wchar_t. */ 28 #undef WCHAR_TYPE 29 #define WCHAR_TYPE "long int" 30 31 #undef WCHAR_TYPE_SIZE 32 #define WCHAR_TYPE_SIZE BITS_PER_WORD 33 34 /* Solaris 2 uses a wint_t different from the default. This is required 35 by the SCD 2.4.1, p. 6-83, Figure 6-66. */ 36 #undef WINT_TYPE 37 #define WINT_TYPE "long int" 38 39 #undef WINT_TYPE_SIZE 40 #define WINT_TYPE_SIZE BITS_PER_WORD 41 42 #define TARGET_HANDLE_PRAGMA_REDEFINE_EXTNAME 1 43 44 /* ??? Note: in order for -compat-bsd to work fully, 45 we must somehow arrange to fixincludes /usr/ucbinclude 46 and put the result in $(libsubdir)/ucbinclude. */ 47 48 #undef CPP_SUBTARGET_SPEC 49 #define CPP_SUBTARGET_SPEC "\ 50 %{pthreads|pthread:-D_REENTRANT -D_PTHREADS} \ 51 %{!pthreads:%{!pthread:%{threads:-D_REENTRANT -D_SOLARIS_THREADS}}} \ 52 %{compat-bsd:-iwithprefixbefore ucbinclude -I/usr/ucbinclude} \ 53 " 54 55 /* Names to predefine in the preprocessor for this target machine. */ 56 #define TARGET_SUB_OS_CPP_BUILTINS() 57 #define TARGET_OS_CPP_BUILTINS() \ 58 do { \ 59 builtin_define_std ("unix"); \ 60 builtin_define_std ("sun"); \ 61 builtin_define ("__svr4__"); \ 62 builtin_define ("__SVR4"); \ 63 builtin_assert ("system=unix"); \ 64 builtin_assert ("system=svr4"); \ 65 /* For C++ we need to add some additional macro \ 66 definitions required by the C++ standard \ 67 library. */ \ 68 if (c_dialect_cxx ()) \ 69 { \ 70 builtin_define ("_XOPEN_SOURCE=500"); \ 71 builtin_define ("_LARGEFILE_SOURCE=1"); \ 72 builtin_define ("_LARGEFILE64_SOURCE=1"); \ 73 builtin_define ("__EXTENSIONS__"); \ 74 } \ 75 TARGET_SUB_OS_CPP_BUILTINS(); \ 76 } while (0) 77 78 /* The system headers under Solaris 2 are C++-aware since 2.0. */ 79 #define NO_IMPLICIT_EXTERN_C 80 81 /* The sun bundled assembler doesn't accept -Yd, (and neither does gas). 82 It's safe to pass -s always, even if -g is not used. */ 83 #undef ASM_SPEC 84 #define ASM_SPEC "\ 85 %{v:-V} %{Qy:} %{!Qn:-Qy} %{n} %{T} %{Ym,*} %{Wa,*:%*} -s \ 86 %{fpic|fpie|fPIC|fPIE:-K PIC} \ 87 %(asm_cpu) \ 88 " 89 90 /* We don't use the standard LIB_SPEC only because we don't yet support c++. */ 91 #undef LIB_SPEC 92 #define LIB_SPEC \ 93 "%{compat-bsd:-lucb -lsocket -lnsl -lelf -laio} \ 94 %{!shared:\ 95 %{!symbolic:\ 96 %{pthreads|pthread:-lpthread} \ 97 %{!pthreads:%{!pthread:%{threads:-lthread}}} \ 98 %{p|pg:-ldl} -lc}}" 99 100 #undef ENDFILE_SPEC 101 #define ENDFILE_SPEC "crtend.o%s crtn.o%s" 102 103 /* We don't use the standard svr4 STARTFILE_SPEC because it's wrong for us. */ 104 #undef STARTFILE_SPEC 105 #define STARTFILE_SPEC "%{!shared: \ 106 %{!symbolic: \ 107 %{p:mcrt1.o%s} \ 108 %{!p: \ 109 %{pg:gcrt1.o%s gmon.o%s} \ 110 %{!pg:crt1.o%s}}}} \ 111 crti.o%s %(startfile_arch) \ 112 crtbegin.o%s" 113 114 #undef STARTFILE_ARCH32_SPEC 115 #define STARTFILE_ARCH32_SPEC "%{ansi:values-Xc.o%s} \ 116 %{!ansi:values-Xa.o%s}" 117 118 #undef STARTFILE_ARCH_SPEC 119 #define STARTFILE_ARCH_SPEC STARTFILE_ARCH32_SPEC 120 121 #undef LINK_ARCH32_SPEC_BASE 122 #define LINK_ARCH32_SPEC_BASE \ 123 "%{G:-G} \ 124 %{YP,*} \ 125 %{R*} \ 126 %{compat-bsd: \ 127 %{!YP,*:%{p|pg:-Y P,/usr/ucblib:/usr/ccs/lib/libp:/usr/lib/libp:/usr/ccs/lib:/usr/lib} \ 128 %{!p:%{!pg:-Y P,/usr/ucblib:/usr/ccs/lib:/usr/lib}}} \ 129 -R /usr/ucblib} \ 130 %{!compat-bsd: \ 131 %{!YP,*:%{p|pg:-Y P,/usr/ccs/lib/libp:/usr/lib/libp:/usr/ccs/lib:/usr/lib} \ 132 %{!p:%{!pg:-Y P,/usr/ccs/lib:/usr/lib}}}}" 133 134 #undef LINK_ARCH32_SPEC 135 #define LINK_ARCH32_SPEC LINK_ARCH32_SPEC_BASE 136 137 #undef LINK_ARCH_SPEC 138 #define LINK_ARCH_SPEC LINK_ARCH32_SPEC 139 140 /* This should be the same as in svr4.h, except with -R added. */ 141 #undef LINK_SPEC 142 #define LINK_SPEC \ 143 "%{h*} %{v:-V} \ 144 %{b} \ 145 %{static:-dn -Bstatic} \ 146 %{shared:-G -dy %{!mimpure-text:-z text}} \ 147 %{symbolic:-Bsymbolic -G -dy -z text} \ 148 %(link_arch) \ 149 %{Qy:} %{!Qn:-Qy}" 150 151 /* The Solaris linker doesn't understand constructor priorities. (The 152 GNU linker does support constructor priorities, so GNU ld 153 configuration files for Solaris override this setting.) */ 154 #undef SUPPORTS_INIT_PRIORITY 155 #define SUPPORTS_INIT_PRIORITY 0 156 157 /* This defines which switch letters take arguments. 158 It is as in svr4.h but with -R added. */ 159 #undef SWITCH_TAKES_ARG 160 #define SWITCH_TAKES_ARG(CHAR) \ 161 (DEFAULT_SWITCH_TAKES_ARG(CHAR) \ 162 || (CHAR) == 'R' \ 163 || (CHAR) == 'h' \ 164 || (CHAR) == 'z') 165 166 #define STDC_0_IN_SYSTEM_HEADERS 1 167 168 /* 169 * Attempt to turn on access permissions for the stack. 170 * 171 * _SC_STACK_PROT is only defined for post 2.6, but we want this code 172 * to run always. 2.6 can change the stack protection but has no way to 173 * query it. 174 * 175 */ 176 177 /* sys/mman.h is not present on some non-Solaris configurations 178 that use sol2.h, so ENABLE_EXECUTE_STACK must use a magic 179 number instead of the appropriate PROT_* flags. */ 180 181 #define ENABLE_EXECUTE_STACK \ 182 \ 183 /* #define STACK_PROT_RWX (PROT_READ | PROT_WRITE | PROT_EXEC) */ \ 184 \ 185 static int need_enable_exec_stack; \ 186 \ 187 static void check_enabling(void) __attribute__ ((constructor)); \ 188 static void check_enabling(void) \ 189 { \ 190 extern long sysconf(int); \ 191 \ 192 int prot = (int) sysconf(515 /* _SC_STACK_PROT */); \ 193 if (prot != 7 /* STACK_PROT_RWX */) \ 194 need_enable_exec_stack = 1; \ 195 } \ 196 \ 197 extern void __enable_execute_stack (void *); \ 198 void \ 199 __enable_execute_stack (void *addr) \ 200 { \ 201 extern int mprotect(void *, size_t, int); \ 202 if (!need_enable_exec_stack) \ 203 return; \ 204 else { \ 205 long size = getpagesize (); \ 206 long mask = ~(size-1); \ 207 char *page = (char *) (((long) addr) & mask); \ 208 char *end = (char *) ((((long) (addr + TRAMPOLINE_SIZE)) & mask) + size); \ 209 \ 210 if (mprotect (page, end - page, 7 /* STACK_PROT_RWX */) < 0) \ 211 perror ("mprotect of trampoline code"); \ 212 } \ 213 } 214 215 /* Support Solaris-specific format checking for cmn_err. */ 216 #define TARGET_N_FORMAT_TYPES 1 217 #define TARGET_FORMAT_TYPES solaris_format_types 218 219 /* #pragma init and #pragma fini are implemented on top of init and 220 fini attributes. */ 221 #define SOLARIS_ATTRIBUTE_TABLE \ 222 { "init", 0, 0, true, false, false, NULL }, \ 223 { "fini", 0, 0, true, false, false, NULL } 224 225 /* This is how to declare the size of a function. For Solaris, we output 226 any .init or .fini entries here. */ 227 #undef ASM_DECLARE_FUNCTION_SIZE 228 #define ASM_DECLARE_FUNCTION_SIZE(FILE, FNAME, DECL) \ 229 do \ 230 { \ 231 if (!flag_inhibit_size_directive) \ 232 ASM_OUTPUT_MEASURED_SIZE (FILE, FNAME); \ 233 solaris_output_init_fini (FILE, DECL); \ 234 } \ 235 while (0) 236 237 /* Register the Solaris-specific #pragma directives. */ 238 #define REGISTER_TARGET_PRAGMAS() solaris_register_pragmas () 239 240 extern GTY(()) tree solaris_pending_aligns; 241 extern GTY(()) tree solaris_pending_inits; 242 extern GTY(()) tree solaris_pending_finis; 243 244 /* Allow macro expansion in #pragma pack. */ 245 #define HANDLE_PRAGMA_PACK_WITH_EXPANSION 246