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author | Paul Mackerras <paulus@samba.org> | 2005-09-26 16:04:21 +1000 |
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committer | Paul Mackerras <paulus@samba.org> | 2005-09-26 16:04:21 +1000 |
commit | 14cf11af6cf608eb8c23e989ddb17a715ddce109 (patch) | |
tree | 271a97ce73e265f39c569cb159c195c5b4bb3f8c /include/asm-powerpc/kprobes.h | |
parent | e5baa396af7560382d2cf3f0871d616b61fc284c (diff) | |
download | kernel_samsung_smdk4412-14cf11af6cf608eb8c23e989ddb17a715ddce109.zip kernel_samsung_smdk4412-14cf11af6cf608eb8c23e989ddb17a715ddce109.tar.gz kernel_samsung_smdk4412-14cf11af6cf608eb8c23e989ddb17a715ddce109.tar.bz2 |
powerpc: Merge enough to start building in arch/powerpc.
This creates the directory structure under arch/powerpc and a bunch
of Kconfig files. It does a first-cut merge of arch/powerpc/mm,
arch/powerpc/lib and arch/powerpc/platforms/powermac. This is enough
to build a 32-bit powermac kernel with ARCH=powerpc.
For now we are getting some unmerged files from arch/ppc/kernel and
arch/ppc/syslib, or arch/ppc64/kernel. This makes some minor changes
to files in those directories and files outside arch/powerpc.
The boot directory is still not merged. That's going to be interesting.
Signed-off-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to 'include/asm-powerpc/kprobes.h')
-rw-r--r-- | include/asm-powerpc/kprobes.h | 67 |
1 files changed, 67 insertions, 0 deletions
diff --git a/include/asm-powerpc/kprobes.h b/include/asm-powerpc/kprobes.h new file mode 100644 index 0000000..d9129d2 --- /dev/null +++ b/include/asm-powerpc/kprobes.h @@ -0,0 +1,67 @@ +#ifndef _ASM_KPROBES_H +#define _ASM_KPROBES_H +/* + * Kernel Probes (KProbes) + * include/asm-ppc64/kprobes.h + * + * 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> + +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; +}; + +#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 /* _ASM_KPROBES_H */ |