]> oss.titaniummirror.com Git - msp430-gcc.git/blobdiff - gcc/config/sol2.h
Imported gcc-4.4.3
[msp430-gcc.git] / gcc / config / sol2.h
diff --git a/gcc/config/sol2.h b/gcc/config/sol2.h
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+/* Operating system specific defines to be used when targeting GCC for any
+   Solaris 2 system.
+   Copyright 2002, 2003, 2004, 2007, 2008 Free Software Foundation, Inc.
+
+This file is part of GCC.
+
+GCC is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 3, or (at your option)
+any later version.
+
+GCC is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with GCC; see the file COPYING3.  If not see
+<http://www.gnu.org/licenses/>.  */
+
+/* We use stabs-in-elf for debugging, because that is what the native
+   toolchain uses.  */
+#undef PREFERRED_DEBUGGING_TYPE
+#define PREFERRED_DEBUGGING_TYPE DBX_DEBUG
+
+/* Solaris 2 (at least as of 2.5.1) uses a 32-bit wchar_t.  */
+#undef WCHAR_TYPE
+#define WCHAR_TYPE "long int"
+
+#undef WCHAR_TYPE_SIZE
+#define WCHAR_TYPE_SIZE BITS_PER_WORD
+
+/* Solaris 2 uses a wint_t different from the default. This is required
+   by the SCD 2.4.1, p. 6-83, Figure 6-66.  */
+#undef WINT_TYPE
+#define        WINT_TYPE "long int"
+
+#undef WINT_TYPE_SIZE
+#define        WINT_TYPE_SIZE BITS_PER_WORD
+
+#define TARGET_HANDLE_PRAGMA_REDEFINE_EXTNAME 1
+
+/* ??? Note: in order for -compat-bsd to work fully,
+   we must somehow arrange to fixincludes /usr/ucbinclude
+   and put the result in $(libsubdir)/ucbinclude.  */
+
+#undef CPP_SUBTARGET_SPEC
+#define CPP_SUBTARGET_SPEC "\
+%{pthreads|pthread:-D_REENTRANT -D_PTHREADS} \
+%{!pthreads:%{!pthread:%{threads:-D_REENTRANT -D_SOLARIS_THREADS}}} \
+%{compat-bsd:-iwithprefixbefore ucbinclude -I/usr/ucbinclude} \
+"
+
+/* Names to predefine in the preprocessor for this target machine.  */
+#define TARGET_SUB_OS_CPP_BUILTINS()
+#define TARGET_OS_CPP_BUILTINS()                       \
+    do {                                               \
+       builtin_define_std ("unix");                    \
+       builtin_define_std ("sun");                     \
+       builtin_define ("__svr4__");                    \
+       builtin_define ("__SVR4");                      \
+       builtin_assert ("system=unix");                 \
+       builtin_assert ("system=svr4");                 \
+       /* For C++ we need to add some additional macro \
+          definitions required by the C++ standard     \
+          library.  */                                 \
+       if (c_dialect_cxx ())                           \
+         {                                             \
+           builtin_define ("_XOPEN_SOURCE=500");       \
+           builtin_define ("_LARGEFILE_SOURCE=1");     \
+           builtin_define ("_LARGEFILE64_SOURCE=1");   \
+           builtin_define ("__EXTENSIONS__");          \
+         }                                             \
+       TARGET_SUB_OS_CPP_BUILTINS();                   \
+    } while (0)
+
+/* The system headers under Solaris 2 are C++-aware since 2.0.  */
+#define NO_IMPLICIT_EXTERN_C
+
+/* The sun bundled assembler doesn't accept -Yd, (and neither does gas).
+   It's safe to pass -s always, even if -g is not used.  */
+#undef ASM_SPEC
+#define ASM_SPEC "\
+%{v:-V} %{Qy:} %{!Qn:-Qy} %{n} %{T} %{Ym,*} %{Wa,*:%*} -s \
+%{fpic|fpie|fPIC|fPIE:-K PIC} \
+%(asm_cpu) \
+"
+
+/* We don't use the standard LIB_SPEC only because we don't yet support c++.  */
+#undef LIB_SPEC
+#define LIB_SPEC \
+  "%{compat-bsd:-lucb -lsocket -lnsl -lelf -laio} \
+   %{!shared:\
+     %{!symbolic:\
+       %{pthreads|pthread:-lpthread} \
+       %{!pthreads:%{!pthread:%{threads:-lthread}}} \
+       %{p|pg:-ldl} -lc}}"
+
+#undef  ENDFILE_SPEC
+#define ENDFILE_SPEC "crtend.o%s crtn.o%s"
+
+/* We don't use the standard svr4 STARTFILE_SPEC because it's wrong for us.  */
+#undef STARTFILE_SPEC
+#define STARTFILE_SPEC "%{!shared: \
+                        %{!symbolic: \
+                         %{p:mcrt1.o%s} \
+                          %{!p: \
+                           %{pg:gcrt1.o%s gmon.o%s} \
+                            %{!pg:crt1.o%s}}}} \
+                       crti.o%s %(startfile_arch) \
+                       crtbegin.o%s"
+
+#undef STARTFILE_ARCH32_SPEC
+#define STARTFILE_ARCH32_SPEC "%{ansi:values-Xc.o%s} \
+                           %{!ansi:values-Xa.o%s}"
+
+#undef STARTFILE_ARCH_SPEC
+#define STARTFILE_ARCH_SPEC STARTFILE_ARCH32_SPEC
+
+#undef LINK_ARCH32_SPEC_BASE
+#define LINK_ARCH32_SPEC_BASE \
+  "%{G:-G} \
+   %{YP,*} \
+   %{R*} \
+   %{compat-bsd: \
+     %{!YP,*:%{p|pg:-Y P,/usr/ucblib:/usr/ccs/lib/libp:/usr/lib/libp:/usr/ccs/lib:/usr/lib} \
+             %{!p:%{!pg:-Y P,/usr/ucblib:/usr/ccs/lib:/usr/lib}}} \
+             -R /usr/ucblib} \
+   %{!compat-bsd: \
+     %{!YP,*:%{p|pg:-Y P,/usr/ccs/lib/libp:/usr/lib/libp:/usr/ccs/lib:/usr/lib} \
+             %{!p:%{!pg:-Y P,/usr/ccs/lib:/usr/lib}}}}"
+
+#undef LINK_ARCH32_SPEC
+#define LINK_ARCH32_SPEC LINK_ARCH32_SPEC_BASE
+
+#undef LINK_ARCH_SPEC
+#define LINK_ARCH_SPEC LINK_ARCH32_SPEC
+
+/* This should be the same as in svr4.h, except with -R added.  */
+#undef  LINK_SPEC
+#define LINK_SPEC \
+  "%{h*} %{v:-V} \
+   %{b} \
+   %{static:-dn -Bstatic} \
+   %{shared:-G -dy %{!mimpure-text:-z text}} \
+   %{symbolic:-Bsymbolic -G -dy -z text} \
+   %(link_arch) \
+   %{Qy:} %{!Qn:-Qy}"
+
+/* The Solaris linker doesn't understand constructor priorities.  (The
+   GNU linker does support constructor priorities, so GNU ld
+   configuration files for Solaris override this setting.)  */
+#undef SUPPORTS_INIT_PRIORITY
+#define SUPPORTS_INIT_PRIORITY 0
+
+/* This defines which switch letters take arguments.
+   It is as in svr4.h but with -R added.  */
+#undef SWITCH_TAKES_ARG
+#define SWITCH_TAKES_ARG(CHAR) \
+  (DEFAULT_SWITCH_TAKES_ARG(CHAR) \
+   || (CHAR) == 'R' \
+   || (CHAR) == 'h' \
+   || (CHAR) == 'z')
+
+#define STDC_0_IN_SYSTEM_HEADERS 1
+\f
+/*
+ * Attempt to turn on access permissions for the stack.
+ *
+ * _SC_STACK_PROT is only defined for post 2.6, but we want this code
+ * to run always.  2.6 can change the stack protection but has no way to
+ * query it.
+ *
+ */
+
+/* sys/mman.h is not present on some non-Solaris configurations
+   that use sol2.h, so ENABLE_EXECUTE_STACK must use a magic
+   number instead of the appropriate PROT_* flags.  */
+
+#define ENABLE_EXECUTE_STACK                                   \
+                                                                       \
+/* #define STACK_PROT_RWX (PROT_READ | PROT_WRITE | PROT_EXEC) */      \
+                                                                       \
+static int need_enable_exec_stack;                                     \
+                                                                       \
+static void check_enabling(void) __attribute__ ((constructor));                \
+static void check_enabling(void)                                       \
+{                                                                      \
+  extern long sysconf(int);                                            \
+                                                                       \
+  int prot = (int) sysconf(515 /* _SC_STACK_PROT */);                  \
+  if (prot != 7 /* STACK_PROT_RWX */)                                  \
+    need_enable_exec_stack = 1;                                                \
+}                                                                      \
+                                                                       \
+extern void __enable_execute_stack (void *);                           \
+void                                                                   \
+__enable_execute_stack (void *addr)                                    \
+{                                                                      \
+  extern int mprotect(void *, size_t, int);                            \
+  if (!need_enable_exec_stack)                                         \
+    return;                                                            \
+  else {                                                               \
+    long size = getpagesize ();                                                \
+    long mask = ~(size-1);                                             \
+    char *page = (char *) (((long) addr) & mask);                      \
+    char *end  = (char *) ((((long) (addr + TRAMPOLINE_SIZE)) & mask) + size); \
+                                                                       \
+    if (mprotect (page, end - page, 7 /* STACK_PROT_RWX */) < 0)       \
+      perror ("mprotect of trampoline code");                          \
+  }                                                                    \
+}
+
+/* Support Solaris-specific format checking for cmn_err.  */
+#define TARGET_N_FORMAT_TYPES 1
+#define TARGET_FORMAT_TYPES solaris_format_types
+
+/* #pragma init and #pragma fini are implemented on top of init and
+   fini attributes.  */
+#define SOLARIS_ATTRIBUTE_TABLE                                                \
+  { "init",      0, 0, true,  false,  false, NULL },                   \
+  { "fini",      0, 0, true,  false,  false, NULL }
+
+/* This is how to declare the size of a function.  For Solaris, we output
+   any .init or .fini entries here.  */
+#undef ASM_DECLARE_FUNCTION_SIZE
+#define ASM_DECLARE_FUNCTION_SIZE(FILE, FNAME, DECL)           \
+  do                                                           \
+    {                                                          \
+      if (!flag_inhibit_size_directive)                                \
+       ASM_OUTPUT_MEASURED_SIZE (FILE, FNAME);                 \
+      solaris_output_init_fini (FILE, DECL);                   \
+    }                                                          \
+  while (0)
+
+extern GTY(()) tree solaris_pending_aligns;
+extern GTY(()) tree solaris_pending_inits;
+extern GTY(()) tree solaris_pending_finis;
+
+/* Allow macro expansion in #pragma pack.  */
+#define HANDLE_PRAGMA_PACK_WITH_EXPANSION