commit 6aa3524c182c01b8b8b7c21c4da20c742a9b4d86
author David Daney <ddaney@avtrex.com> Tue Sep 23 00:05:54 2008 -0700
committer Ralf Baechle <ralf@linux-mips.org> Sat Oct 11 16:18:56 2008 +0100
tree 245fc4e9f26ad9e7a95e83087bfcc79528d1352e
parent 8192c9ea9ac44213d1266ecb64615519443979b3

MIPS: Add HARDWARE_WATCHPOINTS definitions and support code.

This is the main support code for the patch.  Here we just add the
code, the following patches hook it up.

Signed-off-by: David Daney <ddaney@avtrex.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

 create mode 100644 arch/mips/include/asm/watch.h
 create mode 100644 arch/mips/kernel/watch.c

arch/mips/include/asm/watch.h

diff --git a/arch/mips/include/asm/watch.h b/arch/mips/include/asm/watch.h
new file mode 100644
index 0000000..20126ec
--- /dev/null
+++ b/arch/mips/include/asm/watch.h
@@ -0,0 +1,32 @@
+/*
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2008 David Daney
+ */
+#ifndef _ASM_WATCH_H
+#define _ASM_WATCH_H
+
+#include <linux/bitops.h>
+
+#include <asm/mipsregs.h>
+
+void mips_install_watch_registers(void);
+void mips_read_watch_registers(void);
+void mips_clear_watch_registers(void);
+void mips_probe_watch_registers(struct cpuinfo_mips *c);
+
+#ifdef CONFIG_HARDWARE_WATCHPOINTS
+#define __restore_watch() do {						\
+	if (unlikely(test_bit(TIF_LOAD_WATCH,				\
+			      &current_thread_info()->flags))) {	\
+		mips_install_watch_registers();				\
+	}								\
+} while (0)
+
+#else
+#define __restore_watch() do {} while (0)
+#endif
+
+#endif /* _ASM_WATCH_H */