diff options
Diffstat (limited to 'arch/sh/kernel/kprobes.c')
| -rw-r--r-- | arch/sh/kernel/kprobes.c | 17 |
1 files changed, 4 insertions, 13 deletions
diff --git a/arch/sh/kernel/kprobes.c b/arch/sh/kernel/kprobes.c index aed1ea8e2c2f..a250fb1b9420 100644 --- a/arch/sh/kernel/kprobes.c +++ b/arch/sh/kernel/kprobes.c @@ -39,22 +39,17 @@ static DEFINE_PER_CPU(struct kprobe, saved_next_opcode2); int __kprobes arch_prepare_kprobe(struct kprobe *p) { - kprobe_opcode_t opcode = *(kprobe_opcode_t *) (p->addr); + kprobe_opcode_t opcode = *p->addr; if (OPCODE_RTE(opcode)) return -EFAULT; /* Bad breakpoint */ + memcpy(p->ainsn.insn, p->addr, MAX_INSN_SIZE * sizeof(kprobe_opcode_t)); p->opcode = opcode; return 0; } -void __kprobes arch_copy_kprobe(struct kprobe *p) -{ - memcpy(p->ainsn.insn, p->addr, MAX_INSN_SIZE * sizeof(kprobe_opcode_t)); - p->opcode = *p->addr; -} - void __kprobes arch_arm_kprobe(struct kprobe *p) { *p->addr = BREAKPOINT_INSTRUCTION; @@ -253,7 +248,7 @@ static int __kprobes kprobe_handler(struct pt_regs *regs) p = get_kprobe(addr); if (!p) { /* Not one of ours: let kernel handle it */ - if (*(kprobe_opcode_t *)addr != BREAKPOINT_INSTRUCTION) { + if (*addr != BREAKPOINT_INSTRUCTION) { /* * The breakpoint instruction was removed right * after we hit it. Another cpu has removed @@ -301,7 +296,7 @@ static void __used kretprobe_trampoline_holder(void) /* * Called when we hit the probe point at __kretprobe_trampoline */ -int __kprobes trampoline_probe_handler(struct kprobe *p, struct pt_regs *regs) +static int __kprobes trampoline_probe_handler(struct kprobe *p, struct pt_regs *regs) { regs->pc = __kretprobe_trampoline_handler(regs, NULL); @@ -409,13 +404,10 @@ int __kprobes kprobe_fault_handler(struct pt_regs *regs, int trapnr) int __kprobes kprobe_exceptions_notify(struct notifier_block *self, unsigned long val, void *data) { - struct kprobe *p = NULL; struct die_args *args = (struct die_args *)data; int ret = NOTIFY_DONE; - kprobe_opcode_t *addr = NULL; struct kprobe_ctlblk *kcb = get_kprobe_ctlblk(); - addr = (kprobe_opcode_t *) (args->regs->pc); if (val == DIE_TRAP && args->trapnr == (BREAKPOINT_INSTRUCTION & 0xff)) { if (!kprobe_running()) { @@ -426,7 +418,6 @@ int __kprobes kprobe_exceptions_notify(struct notifier_block *self, ret = NOTIFY_DONE; } } else { - p = get_kprobe(addr); if ((kcb->kprobe_status == KPROBE_HIT_SS) || (kcb->kprobe_status == KPROBE_REENTER)) { if (post_kprobe_handler(args->regs)) |