* config/darwin.c (machopic_select_rtx_section): Don't put relocatable

[pf3gnuchains/gcc-fork.git] / gcc / config / openbsd.h

diff --git a/gcc/config/openbsd.h b/gcc/config/openbsd.h
index 670a0a0..f836cf9 100644 (file)
--- a/gcc/config/openbsd.h
+++ b/gcc/config/openbsd.h
@@ -1,5 +1,5 @@
 /* Base configuration file for all OpenBSD targets.
-   Copyright (C) 1999, 2000 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2000, 2004, 2005 Free Software Foundation, Inc.
 
 This file is part of GCC.
 
@@ -52,29 +52,41 @@ Boston, MA 02111-1307, USA.  */
 
 #ifdef OPENBSD_NATIVE
 
-#undef GCC_INCLUDE_DIR
-#define GCC_INCLUDE_DIR "/usr/include"
-
 /* The compiler is configured with ONLY the gcc/g++ standard headers.  */
 #undef INCLUDE_DEFAULTS
 #define INCLUDE_DEFAULTS                       \
   {                                            \
     { GPLUSPLUS_INCLUDE_DIR, "G++", 1, 1 },    \
-    { GCC_INCLUDE_DIR, "GCC", 0, 0 },          \
+    { GPLUSPLUS_TOOL_INCLUDE_DIR, "G++", 1, 1 }, \
+    { GPLUSPLUS_BACKWARD_INCLUDE_DIR, "G++", 1, 1 }, \
+    { STANDARD_INCLUDE_DIR, STANDARD_INCLUDE_COMPONENT, 0, 0 }, \
     { 0, 0, 0, 0 }                             \
   }
 
 /* Under OpenBSD, the normal location of the various *crt*.o files is the
    /usr/lib directory.  */
-#define STANDARD_STARTFILE_PREFIX      "/usr/lib/"
+#undef STANDARD_STARTFILE_PREFIX
+#define STANDARD_STARTFILE_PREFIX      "/usr/local/lib/"
 
 #endif
 
 \f
 /* Controlling the compilation driver.  */
+/* TARGET_OS_CPP_BUILTINS() common to all OpenBSD targets.  */
+#define OPENBSD_OS_CPP_BUILTINS()              \
+  do                                           \
+    {                                          \
+      builtin_define ("__OpenBSD__");          \
+      builtin_define ("__unix__");             \
+      builtin_define ("__ANSI_COMPAT");                \
+      builtin_assert ("system=unix");          \
+      builtin_assert ("system=bsd");           \
+      builtin_assert ("system=OpenBSD");       \
+    }                                          \
+  while (0)
 
 /* CPP_SPEC appropriate for OpenBSD. We deal with -posix and -pthread.
-   XXX the way threads are handling currently is not very satisfying,
+   XXX the way threads are handled currently is not very satisfying,
    since all code must be compiled with -pthread to work. 
    This two-stage defines makes it easy to pick that for targets that
    have subspecs.  */
@@ -84,10 +96,15 @@ Boston, MA 02111-1307, USA.  */
 #define OBSD_CPP_SPEC "%{posix:-D_POSIX_SOURCE} %{pthread:-D_POSIX_THREADS}"
 #endif
 
-/* LIB_SPEC appropriate for OpenBSD.  Select the appropriate libc, 
-   depending on profiling and threads.  Basically, 
-   -lc(_r)?(_p)?, select _r for threads, and _p for p or pg.  */
-#define OBSD_LIB_SPEC "%{!shared:-lc%{pthread:_r}%{p:_p}%{!p:%{pg:_p}}}"
+/* LIB_SPEC appropriate for OpenBSD.  */
+#ifdef HAS_LIBC_R
+/*   -lc(_r)?(_p)?, select _r for threads, and _p for p or pg.  */
+# define OBSD_LIB_SPEC "%{!shared:-lc%{pthread:_r}%{p:_p}%{!p:%{pg:_p}}}"
+#else
+/* Include -lpthread if -pthread is specified on the command line. */
+# define OBSD_LIB_SPEC "%{!shared:%{pthread:-lpthread%{p:_p}%{!p:%{pg:_p}}}} %{!shared:-lc%{p:_p}%{!p:%{pg:_p}}}"
+#endif
+
 
 #ifndef OBSD_HAS_CORRECT_SPECS
 
@@ -130,13 +147,6 @@ Boston, MA 02111-1307, USA.  */
 \f
 /* Runtime target specification.  */
 
-/* Implicit calls to library routines.  */
-
-/* Use memcpy and memset instead of bcopy and bzero.  */
-#ifndef TARGET_MEM_FUNCTIONS
-#define TARGET_MEM_FUNCTIONS
-#endif
-
 /* Miscellaneous parameters.  */
 
 /* Controlling debugging info: dbx options.  */
@@ -282,3 +292,20 @@ do {                                                                        \
    as this depends on a few other details as well...  */
 #define HANDLE_SYSV_PRAGMA 1
 
+/* Stack is explicitly denied execution rights on OpenBSD platforms.  */
+#define ENABLE_EXECUTE_STACK                                           \
+extern void __enable_execute_stack (void *);                           \
+void                                                                   \
+__enable_execute_stack (void *addr)                                    \
+{                                                                      \
+  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, PROT_READ | PROT_WRITE | PROT_EXEC) < 0) \
+    perror ("mprotect of trampoline code");                            \
+}
+
+#include <sys/types.h>
+#include <sys/mman.h>