Re: [PATCH/RFA] libjava: SH support

[kaz Kojima <kkojima at rr dot iij4u dot or dot jp>]

kaz Kojima <kkojima@rr.iij4u.or.jp> wrote:
> Jeff Sturm <jsturm@one-point.com> writes:
>> On Wed, 24 Jul 2002, kaz Kojima wrote:
>>>                 === libjava Summary ===
>>>
>>> # of expected passes            2440
>>> # of unexpected failures        75
>>> # of expected failures          14
>>> # of untested testcases         191
>> 
>> Does this port have a working MD_FALLBACK_FRAME_STATE_FOR?  This is
>> necessary to unwind through signal handler frames.  Without it you can set
>> CHECKREFSPEC, EXCEPTIONSPEC as is done for e.g. xscale*-elf:
>> 
>>     CHECKREFSPEC=-fcheck-references
>>     EXCEPTIONSPEC=
>
> SH port doesn't implement the dwarf-2 exception handler and doesn't
> have a working MD_FALLBACK_FRAME_STATE_FOR yet. I'll add these 2
> lines and build libgcj again.

Done. Now, 75 unexpected failures reduces to 65. Thanks Jeff.
Here is a revised patch.

Thanks,
	kaz
--
2002-07-25  Kaz Kojima  <kkojima@gcc.gnu.org>

	* configure.host: Add SH support.
        * sysdep/sh/locks.h: New file.

diff -urN ORIG/gcc/libjava/configure.host LOCAL/gcc/libjava/configure.host
--- ORIG/gcc/libjava/configure.host	Mon Jul 22 08:11:37 2002
+++ LOCAL/gcc/libjava/configure.host	Wed Jul 24 12:17:59 2002
@@ -125,6 +125,14 @@
 	enable_getenv_properties_default=no
 	enable_main_args_default=no
 	;;
+  sh-* | sh[34]*-*)
+	sysdeps_dir=sh
+	libgcj_flags="${libgcj_flags} -mieee"
+	libgcj_interpreter=yes
+	CHECKREFSPEC=-fcheck-references
+	EXCEPTIONSPEC=
+	enable_hash_synchronization_default=yes
+	;;
 esac
 
 # This case statement supports generic port properties and may refine
diff -urN ORIG/gcc/libjava/sysdep/sh/locks.h LOCAL/gcc/libjava/sysdep/sh/locks.h
--- ORIG/gcc/libjava/sysdep/sh/locks.h	Thu Jan  1 09:00:00 1970
+++ LOCAL/gcc/libjava/sysdep/sh/locks.h	Sun Jul 21 17:45:26 2002
@@ -0,0 +1,72 @@
+// locks.h - Thread synchronization primitives. SuperH implementation.
+
+/* Copyright (C) 2002  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.  */
+
+#ifndef __SYSDEP_LOCKS_H__
+#define __SYSDEP_LOCKS_H__
+
+typedef size_t obj_addr_t;	/* Integer type big enough for object	*/
+				/* address.				*/
+
+static unsigned char __cas_lock = 0;
+
+inline static void
+__cas_start_atomic (void)
+{
+  unsigned int val;
+
+  do
+    __asm__ __volatile__ ("tas.b @%1; movt %0"
+			  : "=r" (val)
+			  : "r" (&__cas_lock)
+			  : "memory");
+  while (val == 0);
+}
+
+inline static void
+__cas_end_atomic (void)
+{
+  __asm__ __volatile__ (" " : : : "memory");
+  __cas_lock = 0;
+}
+
+inline static bool
+compare_and_swap (volatile obj_addr_t *addr, obj_addr_t old,
+		  obj_addr_t new_val)
+{
+  bool ret;
+
+  __cas_start_atomic ();
+  if (*addr != old)
+    ret = false;
+  else
+    {
+      *addr = new_val;
+      ret = true;
+    }
+  __cas_end_atomic ();
+
+  return ret;
+}
+
+inline static void
+release_set (volatile obj_addr_t *addr, obj_addr_t new_val)
+{
+  __asm__ __volatile__ (" " : : : "memory");
+  *(addr) = new_val;
+}
+
+inline static bool
+compare_and_swap_release (volatile obj_addr_t *addr, obj_addr_t old,
+			  obj_addr_t new_val)
+{
+  return compare_and_swap (addr, old, new_val);
+}
+
+#endif /* ! __SYSDEP_LOCKS_H__ */