209 lines
6.5 KiB
C
209 lines
6.5 KiB
C
/* Operating system specific defines to be used when targeting GCC for any
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Solaris 2 system.
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Copyright 2002, 2003 Free Software Foundation, Inc.
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This file is part of GCC.
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GCC is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GCC is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GCC; see the file COPYING. If not, write to
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the Free Software Foundation, 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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/* We use stabs-in-elf for debugging, because that is what the native
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toolchain uses. */
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#undef PREFERRED_DEBUGGING_TYPE
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#define PREFERRED_DEBUGGING_TYPE DBX_DEBUG
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/* Solaris 2 (at least as of 2.5.1) uses a 32-bit wchar_t. */
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#undef WCHAR_TYPE
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#define WCHAR_TYPE "long int"
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#undef WCHAR_TYPE_SIZE
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#define WCHAR_TYPE_SIZE BITS_PER_WORD
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/* Solaris 2 uses a wint_t different from the default. This is required
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by the SCD 2.4.1, p. 6-83, Figure 6-66. */
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#undef WINT_TYPE
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#define WINT_TYPE "long int"
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#undef WINT_TYPE_SIZE
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#define WINT_TYPE_SIZE BITS_PER_WORD
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#define HANDLE_PRAGMA_REDEFINE_EXTNAME 1
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/* ??? Note: in order for -compat-bsd to work fully,
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we must somehow arrange to fixincludes /usr/ucbinclude
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and put the result in $(libsubdir)/ucbinclude. */
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#undef CPP_SUBTARGET_SPEC
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#define CPP_SUBTARGET_SPEC "\
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%{pthreads:-D_REENTRANT -D_PTHREADS} \
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%{!pthreads:%{threads:-D_REENTRANT -D_SOLARIS_THREADS}} \
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%{compat-bsd:-iwithprefixbefore ucbinclude -I/usr/ucbinclude} \
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"
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/* Names to predefine in the preprocessor for this target machine. */
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#define TARGET_SUB_OS_CPP_BUILTINS()
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#define TARGET_OS_CPP_BUILTINS() \
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do { \
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builtin_define_std ("unix"); \
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builtin_define_std ("sun"); \
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builtin_define ("__svr4__"); \
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builtin_define ("__SVR4"); \
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builtin_define ("__PRAGMA_REDEFINE_EXTNAME"); \
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builtin_assert ("system=unix"); \
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builtin_assert ("system=svr4"); \
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/* For C++ we need to add some additional macro \
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definitions required by the C++ standard \
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library. */ \
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if (c_dialect_cxx ()) \
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{ \
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builtin_define ("_XOPEN_SOURCE=500"); \
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builtin_define ("_LARGEFILE_SOURCE=1"); \
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builtin_define ("_LARGEFILE64_SOURCE=1"); \
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builtin_define ("__EXTENSIONS__"); \
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} \
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TARGET_SUB_OS_CPP_BUILTINS(); \
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} while (0)
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/* The system headers under Solaris 2 are C++-aware since 2.0. */
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#define NO_IMPLICIT_EXTERN_C
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/* The sun bundled assembler doesn't accept -Yd, (and neither does gas).
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It's safe to pass -s always, even if -g is not used. */
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#undef ASM_SPEC
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#define ASM_SPEC "\
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%{v:-V} %{Qy:} %{!Qn:-Qy} %{n} %{T} %{Ym,*} %{Wa,*:%*} -s \
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%{fpic|fpie|fPIC|fPIE:-K PIC} \
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%(asm_cpu) \
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"
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/* We don't use the standard LIB_SPEC only because we don't yet support c++. */
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#undef LIB_SPEC
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#define LIB_SPEC \
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"%{compat-bsd:-lucb -lsocket -lnsl -lelf -laio} \
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%{!shared:\
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%{!symbolic:\
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%{pthreads:-lpthread} \
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%{!pthreads:%{threads:-lthread}} \
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%{p|pg:-ldl} -lc}}"
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#undef ENDFILE_SPEC
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#define ENDFILE_SPEC "crtend.o%s crtn.o%s"
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/* We don't use the standard svr4 STARTFILE_SPEC because it's wrong for us. */
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#undef STARTFILE_SPEC
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#define STARTFILE_SPEC "%{!shared: \
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%{!symbolic: \
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%{p:mcrt1.o%s} \
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%{!p: \
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%{pg:gcrt1.o%s gmon.o%s} \
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%{!pg:crt1.o%s}}}} \
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crti.o%s %(startfile_arch) \
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crtbegin.o%s"
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#undef STARTFILE_ARCH32_SPEC
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#define STARTFILE_ARCH32_SPEC "%{ansi:values-Xc.o%s} \
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%{!ansi:values-Xa.o%s}"
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#undef STARTFILE_ARCH_SPEC
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#define STARTFILE_ARCH_SPEC STARTFILE_ARCH32_SPEC
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#undef LINK_ARCH32_SPEC_BASE
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#define LINK_ARCH32_SPEC_BASE \
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"%{G:-G} \
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%{YP,*} \
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%{R*} \
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%{compat-bsd: \
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%{!YP,*:%{p|pg:-Y P,/usr/ucblib:/usr/ccs/lib/libp:/usr/lib/libp:/usr/ccs/lib:/usr/lib} \
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%{!p:%{!pg:-Y P,/usr/ucblib:/usr/ccs/lib:/usr/lib}}} \
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-R /usr/ucblib} \
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%{!compat-bsd: \
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%{!YP,*:%{p|pg:-Y P,/usr/ccs/lib/libp:/usr/lib/libp:/usr/ccs/lib:/usr/lib} \
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%{!p:%{!pg:-Y P,/usr/ccs/lib:/usr/lib}}}}"
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#undef LINK_ARCH32_SPEC
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#define LINK_ARCH32_SPEC LINK_ARCH32_SPEC_BASE
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#undef LINK_ARCH_SPEC
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#define LINK_ARCH_SPEC LINK_ARCH32_SPEC
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/* This should be the same as in svr4.h, except with -R added. */
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#undef LINK_SPEC
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#define LINK_SPEC \
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"%{h*} %{v:-V} \
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%{b} %{Wl,*:%*} \
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%{static:-dn -Bstatic} \
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%{shared:-G -dy %{!mimpure-text:-z text}} \
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%{symbolic:-Bsymbolic -G -dy -z text} \
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%(link_arch) \
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%{Qy:} %{!Qn:-Qy}"
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/* This defines which switch letters take arguments.
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It is as in svr4.h but with -R added. */
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#undef SWITCH_TAKES_ARG
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#define SWITCH_TAKES_ARG(CHAR) \
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(DEFAULT_SWITCH_TAKES_ARG(CHAR) \
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|| (CHAR) == 'R' \
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|| (CHAR) == 'h' \
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|| (CHAR) == 'z')
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#define STDC_0_IN_SYSTEM_HEADERS 1
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/*
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* Attempt to turn on access permissions for the stack.
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*
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* _SC_STACK_PROT is only defined for post 2.6, but we want this code
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* to run always. 2.6 can change the stack protection but has no way to
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* query it.
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*
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*/
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/* sys/mman.h is not present on some non-Solaris configurations
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that use sol2.h, so ENABLE_EXECUTE_STACK must use a magic
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number instead of the appropriate PROT_* flags. */
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#define ENABLE_EXECUTE_STACK \
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\
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/* #define STACK_PROT_RWX (PROT_READ | PROT_WRITE | PROT_EXEC) */ \
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\
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static int need_enable_exec_stack; \
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\
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static void check_enabling(void) __attribute__ ((constructor)); \
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static void check_enabling(void) \
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{ \
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extern long sysconf(int); \
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\
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int prot = (int) sysconf(515 /* _SC_STACK_PROT */); \
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if (prot != 7 /* STACK_PROT_RWX */) \
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need_enable_exec_stack = 1; \
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} \
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\
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extern void __enable_execute_stack (void *); \
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void \
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__enable_execute_stack (void *addr) \
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{ \
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extern int mprotect (void *, size_t, int); \
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if (!need_enable_exec_stack) \
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return; \
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else { \
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long size = getpagesize (); \
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long mask = ~(size-1); \
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char *page = (char *) (((long) addr) & mask); \
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char *end = (char *) ((((long) (addr + TRAMPOLINE_SIZE)) & mask) + size); \
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\
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if (mprotect (page, end - page, 7 /* STACK_PROT_RWX */) < 0) \
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perror ("mprotect of trampoline code"); \
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} \
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}
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