This commit was manufactured by cvs2svn to create branch 'vserver'.

[linux-2.6.git] / include / asm-powerpc / kprobes.h

diff --git a/include/asm-powerpc/kprobes.h b/include/asm-powerpc/kprobes.h
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+++ b/include/asm-powerpc/kprobes.h
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+#ifndef _ASM_POWERPC_KPROBES_H
+#define _ASM_POWERPC_KPROBES_H
+#ifdef __KERNEL__
+/*
+ *  Kernel Probes (KProbes)
+ *
+ * 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
+ *
+ * 2002-Oct    Created by Vamsi Krishna S <vamsi_krishna@in.ibm.com> Kernel
+ *             Probes initial implementation ( includes suggestions from
+ *             Rusty Russell).
+ * 2004-Nov    Modified for PPC64 by Ananth N Mavinakayanahalli
+ *             <ananth@in.ibm.com>
+ */
+#include <linux/types.h>
+#include <linux/ptrace.h>
+#include <linux/percpu.h>
+
+#define  __ARCH_WANT_KPROBES_INSN_SLOT
+
+struct pt_regs;
+struct kprobe;
+
+typedef unsigned int kprobe_opcode_t;
+#define BREAKPOINT_INSTRUCTION 0x7fe00008      /* trap */
+#define MAX_INSN_SIZE 1
+
+#define IS_TW(instr)           (((instr) & 0xfc0007fe) == 0x7c000008)
+#define IS_TD(instr)           (((instr) & 0xfc0007fe) == 0x7c000088)
+#define IS_TDI(instr)          (((instr) & 0xfc000000) == 0x08000000)
+#define IS_TWI(instr)          (((instr) & 0xfc000000) == 0x0c000000)
+
+#define JPROBE_ENTRY(pentry)   (kprobe_opcode_t *)((func_descr_t *)pentry)
+
+#define is_trap(instr) (IS_TW(instr) || IS_TD(instr) || \
+                       IS_TWI(instr) || IS_TDI(instr))
+
+#define ARCH_SUPPORTS_KRETPROBES
+void kretprobe_trampoline(void);
+extern void arch_remove_kprobe(struct kprobe *p);
+
+/* Architecture specific copy of original instruction */
+struct arch_specific_insn {
+       /* copy of original instruction */
+       kprobe_opcode_t *insn;
+};
+
+struct prev_kprobe {
+       struct kprobe *kp;
+       unsigned long status;
+       unsigned long saved_msr;
+};
+
+/* per-cpu kprobe control block */
+struct kprobe_ctlblk {
+       unsigned long kprobe_status;
+       unsigned long kprobe_saved_msr;
+       struct pt_regs jprobe_saved_regs;
+       struct prev_kprobe prev_kprobe;
+};
+
+extern int kprobe_exceptions_notify(struct notifier_block *self,
+                                       unsigned long val, void *data);
+#endif /* __KERNEL__ */
+#endif /* _ASM_POWERPC_KPROBES_H */