[PATCH] Kprobes/IA64: arch specific handling

This is an IA64 arch specific handling of Kprobes

Signed-off-by: Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com>
Signed-off-by: Rusty Lynch <Rusty.lynch@intel.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 72 insertions, 0 deletions

diff --git a/include/asm-ia64/kprobes.h b/include/asm-ia64/kprobes.h
new file mode 100644
index 000000000000..2a6f2a148890
--- /dev/null
+++ b/include/asm-ia64/kprobes.h
@@ -0,0 +1,72 @@
+#ifndef _ASM_KPROBES_H
+#define _ASM_KPROBES_H
+/*
+ *  Kernel Probes (KProbes)
+ *  include/asm-ia64/kprobes.h
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ *
+ * Copyright (C) IBM Corporation, 2002, 2004
+ * Copyright (C) Intel Corporation, 2005
+ *
+ * 2005-Apr     Rusty Lynch <rusty.lynch@intel.com> and Anil S Keshavamurthy
+ *              <anil.s.keshavamurthy@intel.com> adapted from i386
+ */
+#include <linux/types.h>
+#include <linux/ptrace.h>
+#include <asm/break.h>
+
+#define BREAK_INST      (long)(__IA64_BREAK_KPROBE << 6)
+
+typedef struct _bundle {
+        struct {
+                unsigned long long template : 5;
+                unsigned long long slot0 : 41;
+                unsigned long long slot1_p0 : 64-46;
+        } quad0;
+        struct {
+                unsigned long long slot1_p1 : 41 - (64-46);
+                unsigned long long slot2 : 41;
+        } quad1;
+} __attribute__((__aligned__(16)))  bundle_t;
+
+#define JPROBE_ENTRY(pentry)    (kprobe_opcode_t *)pentry
+
+typedef struct kprobe_opcode {
+        bundle_t bundle;
+} kprobe_opcode_t;
+
+struct fnptr {
+        unsigned long ip;
+        unsigned long gp;
+};
+
+/* Architecture specific copy of original instruction*/
+struct arch_specific_insn {
+        /* copy of the original instruction */
+        kprobe_opcode_t insn;
+};
+
+#ifdef CONFIG_KPROBES
+extern int kprobe_exceptions_notify(struct notifier_block *self,
+                                    unsigned long val, void *data);
+#else                           /* !CONFIG_KPROBES */
+static inline int kprobe_exceptions_notify(struct notifier_block *self,
+                                           unsigned long val, void *data)
+{
+        return 0;
+}
+#endif
+#endif                          /* _ASM_KPROBES_H */