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yaml
---
r: 330254
b: refs/heads/master
c: 7118e7e
h: refs/heads/master
v: v3
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Ananth N Mavinakayanahalli authored and Benjamin Herrenschmidt committed Sep 5, 2012
1 parent eadd697 commit 8058286
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Showing 3 changed files with 45 additions and 14 deletions.
2 changes: 1 addition & 1 deletion [refs]
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---
refs/heads/master: d3dbeef657fdc9e870e0b01f811bbb906af052f8
refs/heads/master: 7118e7e648e0a902bf4f38c55a25fcff730f33d7
15 changes: 2 additions & 13 deletions trunk/arch/powerpc/include/asm/kprobes.h
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Expand Up @@ -29,21 +29,16 @@
#include <linux/types.h>
#include <linux/ptrace.h>
#include <linux/percpu.h>
#include <asm/probes.h>

#define __ARCH_WANT_KPROBES_INSN_SLOT

struct pt_regs;
struct kprobe;

typedef unsigned int kprobe_opcode_t;
#define BREAKPOINT_INSTRUCTION 0x7fe00008 /* trap */
typedef opcode_t kprobe_opcode_t;
#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)

#ifdef CONFIG_PPC64
/*
* 64bit powerpc uses function descriptors.
Expand Down Expand Up @@ -72,12 +67,6 @@ typedef unsigned int kprobe_opcode_t;
addr = (kprobe_opcode_t *)kallsyms_lookup_name(dot_name); \
} \
}

#define is_trap(instr) (IS_TW(instr) || IS_TD(instr) || \
IS_TWI(instr) || IS_TDI(instr))
#else
/* Use stock kprobe_lookup_name since ppc32 doesn't use function descriptors */
#define is_trap(instr) (IS_TW(instr) || IS_TWI(instr))
#endif

#define flush_insn_slot(p) do { } while (0)
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42 changes: 42 additions & 0 deletions trunk/arch/powerpc/include/asm/probes.h
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#ifndef _ASM_POWERPC_PROBES_H
#define _ASM_POWERPC_PROBES_H
#ifdef __KERNEL__
/*
* Definitions common to probes files
*
* 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 IBM Corporation, 2012
*/
#include <linux/types.h>

typedef u32 opcode_t;
#define BREAKPOINT_INSTRUCTION 0x7fe00008 /* trap */

/* Trap definitions per ISA */
#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)

#ifdef CONFIG_PPC64
#define is_trap(instr) (IS_TW(instr) || IS_TD(instr) || \
IS_TWI(instr) || IS_TDI(instr))
#else
#define is_trap(instr) (IS_TW(instr) || IS_TWI(instr))
#endif /* CONFIG_PPC64 */

#endif /* __KERNEL__ */
#endif /* _ASM_POWERPC_PROBES_H */

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