re PR java/35485 (libjava is disabled by default)

PR target/35485
        * configure.ac: AIX threads are Posix threads.
        Set signal handler to aix-signal.h
        * configure: Regenerate.
        * classpath/native/fdlibm/fdlibm.h: Undef hz.
        * include/aix-signal.h: New file.
        * sysdep/powerpc/locks.h: Avoid GNU Assembler syntax.

From-SVN: r141335

libjava/ChangeLog

@@ -1,3 +1,13 @@
+2008-10-23  David Edelsohn  <edelsohn@gnu.org>
+
+	PR target/35485
+	* configure.ac: AIX threads are Posix threads.
+	Set signal handler to aix-signal.h
+	* configure: Regenerate.
+	* classpath/native/fdlibm/fdlibm.h: Undef hz.
+	* include/aix-signal.h: New file.
+	* sysdep/powerpc/locks.h: Avoid GNU Assembler syntax.
+
 2008-10-22  Matthias Klose  <doko@ubuntu.com>
 
 	Import GNU Classpath (libgcj-import-20081021).

libjava/classpath/native/fdlibm/fdlibm.h

@@ -24,6 +24,14 @@
 #include <config.h>
 #include <stdlib.h>
 
+/*
+ * AIX includes a header that defines hz,
+ * which conflicts with an fdlibm variable in some functions.
+ */
+#ifdef _AIX
+#undef hz
+#endif
+
 /* GCJ LOCAL: Include files.  */
 #include "ieeefp.h"
 /* CLASSPATH LOCAL: */

libjava/configure

@@ -20711,7 +20711,7 @@ case "$THREADS" in
  no | none | single)
     THREADS=none
     ;;
- posix | posix95 | pthreads)
+ aix | posix | posix95 | pthreads)
     THREADS=posix
     case "$host" in
      *-*-linux*)
@@ -27510,6 +27510,9 @@ case "${host}" in
  powerpc*-*-darwin* | i?86-*-darwin9* | x86_64-*-darwin9*)
     SIGNAL_HANDLER=include/darwin-signal.h
     ;;
+ powerpc*-*-aix*)
+    SIGNAL_HANDLER=include/aix-signal.h
+    ;;
  *)
     SIGNAL_HANDLER=include/default-signal.h
     ;;

libjava/configure.ac

@@ -938,7 +938,7 @@ case "$THREADS" in
  no | none | single)
     THREADS=none
     ;;
- posix | posix95 | pthreads)
+ aix | posix | posix95 | pthreads)
     THREADS=posix
     case "$host" in
      *-*-linux*)
@@ -1634,6 +1634,9 @@ case "${host}" in
  powerpc*-*-darwin* | i?86-*-darwin9* | x86_64-*-darwin9*)
     SIGNAL_HANDLER=include/darwin-signal.h
     ;;
+ powerpc*-*-aix*)
+    SIGNAL_HANDLER=include/aix-signal.h
+    ;;
  *)
     SIGNAL_HANDLER=include/default-signal.h
     ;;

libjava/include/aix-signal.h

@@ -0,0 +1,50 @@
+/* aix-signal.h - Catch runtime signals and turn them into exceptions,
+   on a Darwin system.  */
+
+/* Copyright (C) 2008  Free Software Foundation
+
+   This file is part of libgcj.
+
+This software is copyrighted work licensed under the terms of the
+Libgcj License.  Please consult the file "LIBGCJ_LICENSE" for
+details.  */
+
+/* This file is really more of a specification.  The rest of the system
+   should be arranged so that this Just Works.  */
+
+#ifndef JAVA_SIGNAL_H
+# define JAVA_SIGNAL_H 1
+
+#include <sys/types.h>
+#include <sys/signal.h>
+
+typedef void (* SIG_PF)(int);
+
+# define HANDLE_SEGV 1
+# undef HANDLE_FPE
+
+# define SIGNAL_HANDLER(_name)					\
+  static void _name (int _dummy __attribute__ ((unused)))
+
+# define MAKE_THROW_FRAME(_exception)
+
+# define INIT_SEGV				\
+  do {						\
+      struct sigaction sa;			\
+      sa.sa_handler = catch_segv;		\
+      sigemptyset (&sa.sa_mask);		\
+      sa.sa_flags = SA_NODEFER;			\
+      sigaction (SIGBUS, &sa, NULL);		\
+      sigaction (SIGSEGV, &sa, NULL);		\
+    } while (0)
+
+# define INIT_FPE				\
+  do {						\
+      struct sigaction sa;			\
+      sa.sa_handler = catch_fpe;		\
+      sigemptyset (&sa.sa_mask);		\
+      sa.sa_flags = SA_NODEFER;			\
+      sigaction (SIGFPE, &sa, NULL);		\
+    } while (0)
+
+#endif /* JAVA_SIGNAL_H */

libjava/sysdep/powerpc/locks.h

@@ -1,6 +1,6 @@
 // locks.h - Thread synchronization primitives. PowerPC implementation.
 
-/* Copyright (C) 2002  Free Software Foundation
+/* Copyright (C) 2002,2008  Free Software Foundation
 
    This file is part of libgcj.
 
@@ -33,12 +33,11 @@ compare_and_swap (volatile obj_addr_t *addr, obj_addr_t old,
   obj_addr_t ret;
 
   __asm__ __volatile__ (
-	   "0:    " _LARX "%0,0,%1 \n"
+	   "      " _LARX "%0,0,%1 \n"
 	   "      xor. %0,%3,%0\n"
-	   "      bne 1f\n"
+	   "      bne $+12\n"
 	   "      " _STCX "%2,0,%1\n"
-	   "      bne- 0b\n"
+	   "      bne- $-16\n"
-	   "1:   \n"
 	: "=&r" (ret)
 	: "r" (addr), "r" (new_val), "r" (old)
 	: "cr0", "memory");
@@ -67,12 +66,11 @@ compare_and_swap_release (volatile obj_addr_t *addr, obj_addr_t old,
   __asm__ __volatile__ ("sync" : : : "memory");
 
   __asm__ __volatile__ (
-	   "0:    " _LARX "%0,0,%1 \n"
+	   "      " _LARX "%0,0,%1 \n"
 	   "      xor. %0,%3,%0\n"
-	   "      bne 1f\n"
+	   "      bne $+12\n"
 	   "      " _STCX "%2,0,%1\n"
-	   "      bne- 0b\n"
+	   "      bne- $-16\n"
-	   "1:   \n"
 	: "=&r" (ret)
 	: "r" (addr), "r" (new_val), "r" (old)
 	: "cr0", "memory");