2009-06-16 H.J. Lu <hongjiu.lu@intel.com>

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

diff --git a/gcc/config/openbsd.h b/gcc/config/openbsd.h
index bf1349b..cbcff23 100644 (file)
--- a/gcc/config/openbsd.h
+++ b/gcc/config/openbsd.h
@@ -1,11 +1,11 @@
 /* Base configuration file for all OpenBSD targets.
 /* Base configuration file for all OpenBSD targets.

-   Copyright (C) 1999, 2000, 2004 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2000, 2004, 2005, 2007 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
 
 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 2, or (at your option)
+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,
 any later version.
 
 GCC is distributed in the hope that it will be useful,


@@ -14,9 +14,8 @@ 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
 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 COPYING.  If not, write to
-the Free Software Foundation, 59 Temple Place - Suite 330,
-Boston, MA 02111-1307, USA.  */
+along with GCC; see the file COPYING3.  If not see
+<http://www.gnu.org/licenses/>.  */

 
 /* Common OpenBSD configuration. 
    All OpenBSD architectures include this file, which is intended as
 
 /* Common OpenBSD configuration. 
    All OpenBSD architectures include this file, which is intended as


@@ -52,29 +51,41 @@ Boston, MA 02111-1307, USA.  */
 
 #ifdef OPENBSD_NATIVE
 
 
 #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 },    \
 /* 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.  */
     { 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.  */
 
 #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.
 
 /* 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.  */
    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 +95,15 @@ Boston, MA 02111-1307, USA.  */
 #define OBSD_CPP_SPEC "%{posix:-D_POSIX_SOURCE} %{pthread:-D_POSIX_THREADS}"
 #endif
 
 #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
 
 
 #ifndef OBSD_HAS_CORRECT_SPECS
 


@@ -275,3 +291,20 @@ do {                                                                        \
    as this depends on a few other details as well...  */
 #define HANDLE_SYSV_PRAGMA 1
 
    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>