diff options
| author | Ananth N Mavinakayanahalli <ananth@in.ibm.com> | 2012-08-23 21:26:02 +0000 |
|---|---|---|
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2012-09-05 15:19:36 +1000 |
| commit | 7118e7e648e0a902bf4f38c55a25fcff730f33d7 (patch) | |
| tree | 816cd359fe6fa055b2d6cadfd00645f927de8eac /arch/powerpc/include/asm/probes.h | |
| parent | d3dbeef657fdc9e870e0b01f811bbb906af052f8 (diff) | |
powerpc: Consolidate {k,u}probe definitions
Move is_trap() and relatives to a common file to be shared between kprobes
and uprobes.
Code movement only; no change in functionality.
Suggested by Michael Ellerman.
Signed-off-by: Ananth N Mavinakayanahalli <ananth@in.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/include/asm/probes.h')
| -rw-r--r-- | arch/powerpc/include/asm/probes.h | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/probes.h b/arch/powerpc/include/asm/probes.h new file mode 100644 index 000000000000..610e00056640 --- /dev/null +++ b/arch/powerpc/include/asm/probes.h @@ -0,0 +1,42 @@ +#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 */ |