linux/include/asm-powerpc/kprobes.h
Arnd Bergmann 88ced03149 [PATCH] powerpc: sanitize header files for user space includes
include/asm-ppc/ had #ifdef __KERNEL__ in all header files that
are not meant for use by user space, include/asm-powerpc does
not have this yet.

This patch gets us a lot closer there. There are a few cases
where I was not sure, so I left them out. I have verified
that no CONFIG_* symbols are used outside of __KERNEL__
any more and that there are no obvious compile errors when
including any of the headers in user space libraries.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-01-09 15:13:08 +11:00

84 lines
2.5 KiB
C

#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>
struct pt_regs;
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);
/* 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;
};
#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 /* __KERNEL__ */
#endif /* _ASM_POWERPC_KPROBES_H */