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| author | Kumar Gala <galak@kernel.crashing.org> | 2007-02-06 22:55:19 -0600 |
|---|---|---|
| committer | Kumar Gala <galak@kernel.crashing.org> | 2007-02-06 22:55:19 -0600 |
| commit | 8209003547c4b1006943eac8dc6c1fb6493cafda (patch) | |
| tree | 37ed5742527d448f211c575fe714fe68846e0c40 /arch/powerpc/kernel/kprobes.c | |
| parent | 8423200553113cc031caa9b147f6150a8e26545c (diff) | |
| download | lwn-8209003547c4b1006943eac8dc6c1fb6493cafda.tar.gz lwn-8209003547c4b1006943eac8dc6c1fb6493cafda.zip | |
[POWERPC] Added kprobes support to ppc32
Added kprobes to ppc32 platforms that have use single_step_exception. This
excludes 4xx and anything Book-E since their debug mechanisms for single stepping
are completely different.
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/kernel/kprobes.c')
| -rw-r--r-- | arch/powerpc/kernel/kprobes.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/arch/powerpc/kernel/kprobes.c b/arch/powerpc/kernel/kprobes.c index 4657563f8813..dd2886f97e98 100644 --- a/arch/powerpc/kernel/kprobes.c +++ b/arch/powerpc/kernel/kprobes.c @@ -46,8 +46,8 @@ int __kprobes arch_prepare_kprobe(struct kprobe *p) if ((unsigned long)p->addr & 0x03) { printk("Attempt to register kprobe at an unaligned address\n"); ret = -EINVAL; - } else if (IS_MTMSRD(insn) || IS_RFID(insn)) { - printk("Cannot register a kprobe on rfid or mtmsrd\n"); + } else if (IS_MTMSRD(insn) || IS_RFID(insn) || IS_RFI(insn)) { + printk("Cannot register a kprobe on rfi/rfid or mtmsr[d]\n"); ret = -EINVAL; } @@ -483,8 +483,12 @@ int __kprobes setjmp_pre_handler(struct kprobe *p, struct pt_regs *regs) memcpy(&kcb->jprobe_saved_regs, regs, sizeof(struct pt_regs)); /* setup return addr to the jprobe handler routine */ +#ifdef CONFIG_PPC64 regs->nip = (unsigned long)(((func_descr_t *)jp->entry)->entry); regs->gpr[2] = (unsigned long)(((func_descr_t *)jp->entry)->toc); +#else + regs->nip = (unsigned long)jp->entry; +#endif return 1; } |