1 files changed, 88 insertions, 0 deletions

diff --git a/arch/x86/include/asm/kprobes.h b/arch/x86/include/asm/kprobes.h
new file mode 100644
index 00000000000..4fe681de1e7
--- /dev/null
+++ b/arch/x86/include/asm/kprobes.h
@@ -0,0 +1,88 @@
+#ifndef _ASM_X86_KPROBES_H
+#define _ASM_X86_KPROBES_H
+/*
+ *  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
+ *
+ * See arch/x86/kernel/kprobes.c for x86 kprobes history.
+ */
+#include <linux/types.h>
+#include <linux/ptrace.h>
+#include <linux/percpu.h>
+
+#define  __ARCH_WANT_KPROBES_INSN_SLOT
+
+struct pt_regs;
+struct kprobe;
+
+typedef u8 kprobe_opcode_t;
+#define BREAKPOINT_INSTRUCTION  0xcc
+#define RELATIVEJUMP_INSTRUCTION 0xe9
+#define MAX_INSN_SIZE 16
+#define MAX_STACK_SIZE 64
+#define MIN_STACK_SIZE(ADDR)                                           \
+        (((MAX_STACK_SIZE) < (((unsigned long)current_thread_info()) + \
+                              THREAD_SIZE - (unsigned long)(ADDR)))    \
+         ? (MAX_STACK_SIZE)                                            \
+         : (((unsigned long)current_thread_info()) +                   \
+            THREAD_SIZE - (unsigned long)(ADDR)))
+
+#define flush_insn_slot(p)      do { } while (0)
+
+extern const int kretprobe_blacklist_size;
+
+void arch_remove_kprobe(struct kprobe *p);
+void kretprobe_trampoline(void);
+
+/* Architecture specific copy of original instruction*/
+struct arch_specific_insn {
+        /* copy of the original instruction */
+        kprobe_opcode_t *insn;
+        /*
+         * boostable = -1: This instruction type is not boostable.
+         * boostable = 0: This instruction type is boostable.
+         * boostable = 1: This instruction has been boosted: we have
+         * added a relative jump after the instruction copy in insn,
+         * so no single-step and fixup are needed (unless there's
+         * a post_handler or break_handler).
+         */
+        int boostable;
+};
+
+struct prev_kprobe {
+        struct kprobe *kp;
+        unsigned long status;
+        unsigned long old_flags;
+        unsigned long saved_flags;
+};
+
+/* per-cpu kprobe control block */
+struct kprobe_ctlblk {
+        unsigned long kprobe_status;
+        unsigned long kprobe_old_flags;
+        unsigned long kprobe_saved_flags;
+        unsigned long *jprobe_saved_sp;
+        struct pt_regs jprobe_saved_regs;
+        kprobe_opcode_t jprobes_stack[MAX_STACK_SIZE];
+        struct prev_kprobe prev_kprobe;
+};
+
+extern int kprobe_fault_handler(struct pt_regs *regs, int trapnr);
+extern int kprobe_exceptions_notify(struct notifier_block *self,
+                                    unsigned long val, void *data);
+#endif /* _ASM_X86_KPROBES_H */