freebsd.h (CPP_CPU64_DEFAULT_SPEC): Define __arch64__.

2002-11-01  David O'Brien  <obrien@FreeBSD.org>
	* config/sparc/freebsd.h (CPP_CPU64_DEFAULT_SPEC): Define __arch64__.
	(TRANSFER_FROM_TRAMPOLINE): Reformat.
	Add comment.

Approved by:  Mark Mitchell <mark@codesourcery.com>
              Message-ID: <15490000.1036182355@warlock.codesourcery.com>

From-SVN: r58730

gcc/ChangeLog

+2002-11-01  David O'Brien  <obrien@FreeBSD.org>
+
+	* config/sparc/freebsd.h (CPP_CPU64_DEFAULT_SPEC): Define __arch64__.
+	(TRANSFER_FROM_TRAMPOLINE): Reformat.
+	Add comment.
+
 2002-11-01  Kazu Hirata  <kazu@cs.umass.edu>
 
 	* config/h8300/h8300.h (CAN_ELIMINATE): Simplify.

gcc/config/sparc/freebsd.h

@@ -18,11 +18,13 @@ You should have received a copy of the GNU General Public License
 along with GNU CC; see the file COPYING.  If not, write to
 the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
 
-/* FreeBSD needs's the platform name (sparc64) defined.  */
+/* FreeBSD needs's the platform name (sparc64) defined.
+   Emacs needs to know if the arch is 64 or 32-bits.  */
 
 #undef  CPP_CPU64_DEFAULT_SPEC
-#define CPP_CPU64_DEFAULT_SPEC "-D__sparc64__ -D__sparc_v9__"
+#define CPP_CPU64_DEFAULT_SPEC "-D__sparc64__ -D__sparc_v9__ -D__arch64__"
 
+/* Because we include sparc/sysv4.h.  */
 #undef  CPP_PREDEFINES
 #define CPP_PREDEFINES FBSD_CPP_PREDEFINES
 
@@ -97,35 +99,29 @@ the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
 #define SPARC_DEFAULT_CMODEL	CM_MEDLOW
 
 #define TRANSFER_FROM_TRAMPOLINE					\
-static int need_enable_exec_stack;					\
+  static int need_enable_exec_stack;					\
+  static void check_enabling(void) __attribute__ ((constructor));	\
+  static void check_enabling(void)					\
+  {									\
+    extern int sysctlbyname(const char *, void *, size_t *, void *, size_t);\
+    int prot = 0;							\
+    size_t len = sizeof(prot);						\
 									\
-static void check_enabling(void) __attribute__ ((constructor));		\
-static void check_enabling(void)					\
-{									\
-  extern int sysctlbyname(const char *, void *, size_t *, void *, size_t);\
-  size_t len;								\
-  int prot;								\
-									\
-  prot = 0;								\
-  len = sizeof(prot);							\
-  sysctlbyname ("kern.stackprot", &prot, &len, NULL, 0);		\
-  if (prot != 7)							\
-    need_enable_exec_stack = 1;						\
-}									\
-									\
-extern void __enable_execute_stack (void *);				\
-void									\
-__enable_execute_stack (addr)						\
-     void *addr;							\
-{									\
-  if (!need_enable_exec_stack)						\
-    return;								\
-  else {								\
-    /* 7 is PROT_READ | PROT_WRITE | PROT_EXEC */ 			\
-    if (mprotect (addr, TRAMPOLINE_SIZE, 7) < 0)			\
-      perror ("mprotect of trampoline code");				\
+    sysctlbyname ("kern.stackprot", &prot, &len, NULL, 0);		\
+    if (prot != 7)							\
+      need_enable_exec_stack = 1;					\
   }									\
-}
+  extern void __enable_execute_stack (void *);				\
+  void __enable_execute_stack (void *addr)				\
+  {									\
+    if (!need_enable_exec_stack)					\
+      return;								\
+    else {								\
+      /* 7 is PROT_READ | PROT_WRITE | PROT_EXEC */ 			\
+      if (mprotect (addr, TRAMPOLINE_SIZE, 7) < 0)			\
+        perror ("mprotect of trampoline code");				\
+    }									\
+  }
 
 
 /************************[  Assembler stuff  ]********************************/