Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
diff --git a/arch/mips/lib-64/watch.S b/arch/mips/lib-64/watch.S
new file mode 100644
index 0000000..f914340
--- /dev/null
+++ b/arch/mips/lib-64/watch.S
@@ -0,0 +1,57 @@
+/*
+ * 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.
+ *
+ * Kernel debug stuff to use the Watch registers.
+ * Useful to find stack overflows, dangling pointers etc.
+ *
+ * Copyright (C) 1995, 1996, 1999, 2001 by Ralf Baechle
+ */
+#include <asm/asm.h>
+#include <asm/mipsregs.h>
+#include <asm/regdef.h>
+
+ .set noreorder
+/*
+ * Parameter: a0 - physical address to watch
+ * a1 - set bit #1 to trap on load references
+ * bit #0 to trap on store references
+ * Results : none
+ */
+ LEAF(__watch_set)
+ ori a0, 7
+ xori a0, 7
+ or a0, a1
+ mtc0 a0, CP0_WATCHLO
+ sd a0, watch_savelo
+ dsrl32 a0, a0, 0
+
+ jr ra
+ mtc0 zero, CP0_WATCHHI
+ END(__watch_set)
+
+/*
+ * Parameter: none
+ * Results : none
+ */
+ LEAF(__watch_clear)
+ jr ra
+ mtc0 zero, CP0_WATCHLO
+ END(__watch_clear)
+
+/*
+ * Parameter: none
+ * Results : none
+ */
+ LEAF(__watch_reenable)
+ ld t0, watch_savelo
+ jr ra
+ mtc0 t0, CP0_WATCHLO
+ END(__watch_reenable)
+
+/*
+ * Saved value of the c0_watchlo register for watch_reenable()
+ */
+ .local watch_savelo
+ .comm watch_savelo, 8, 8
