From 2004f90327747aeb9797af3d47e9d4577943186c Mon Sep 17 00:00:00 2001
From: kkojima <kkojima@138bc75d-0d04-0410-961f-82ee72b054a4>
Date: Thu, 1 Aug 2002 05:34:54 +0000
Subject: [PATCH] * configure.host: Add SH support. *
sysdep/sh/locks.h: New file.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@55922 138bc75d-0d04-0410-961f-82ee72b054a4
---
libjava/ChangeLog | 5 +++
libjava/configure.host | 8 +++++
libjava/sysdep/sh/locks.h | 72 +++++++++++++++++++++++++++++++++++++++
3 files changed, 85 insertions(+)
create mode 100644 libjava/sysdep/sh/locks.h
diff --git a/libjava/ChangeLog b/libjava/ChangeLog
index e5734ca67b58..6c8b3d2f1f1a 100644
--- a/libjava/ChangeLog
+++ b/libjava/ChangeLog
@@ -1,3 +1,8 @@
+2002-08-01 Kaz Kojima <kkojima@gcc.gnu.org>
+
+ * configure.host: Add SH support.
+ * sysdep/sh/locks.h: New file.
+
2002-07-31 Bryce McKinlay <bryce@waitaki.otago.ac.nz>
* java/awt/Frame.java (Frame): Remove println calls.
diff --git a/libjava/configure.host b/libjava/configure.host
index a4819f3f8667..5baabd46be17 100644
--- a/libjava/configure.host
+++ b/libjava/configure.host
@@ -135,6 +135,14 @@ case "${host}" in
enable_getenv_properties_default=no
enable_main_args_default=no
;;
+ sh-* | sh[34]*-*)
+ sysdeps_dir=sh
+ libgcj_flags="${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 --git a/libjava/sysdep/sh/locks.h b/libjava/sysdep/sh/locks.h
new file mode 100644
index 000000000000..f6076d601997
--- /dev/null
+++ b/libjava/sysdep/sh/locks.h
@@ -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__ */
--
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