diff options
| -rw-r--r-- | arch/s390/include/asm/kprobes.h | 4 | ||||
| -rw-r--r-- | arch/s390/kernel/kprobes.c | 17 |
2 files changed, 8 insertions, 13 deletions
diff --git a/arch/s390/include/asm/kprobes.h b/arch/s390/include/asm/kprobes.h index 02a822e8ef7..a231a9439c4 100644 --- a/arch/s390/include/asm/kprobes.h +++ b/arch/s390/include/asm/kprobes.h @@ -70,10 +70,8 @@ struct kprobe_ctlblk { unsigned long kprobe_status; unsigned long kprobe_saved_imask; unsigned long kprobe_saved_ctl[3]; - struct pt_regs jprobe_saved_regs; - unsigned long jprobe_saved_r14; - unsigned long jprobe_saved_r15; struct prev_kprobe prev_kprobe; + struct pt_regs jprobe_saved_regs; kprobe_opcode_t jprobes_stack[MAX_STACK_SIZE]; }; diff --git a/arch/s390/kernel/kprobes.c b/arch/s390/kernel/kprobes.c index 61f0b6c3618..4efd5dbfd72 100644 --- a/arch/s390/kernel/kprobes.c +++ b/arch/s390/kernel/kprobes.c @@ -585,8 +585,8 @@ int __kprobes kprobe_exceptions_notify(struct notifier_block *self, int __kprobes setjmp_pre_handler(struct kprobe *p, struct pt_regs *regs) { struct jprobe *jp = container_of(p, struct jprobe, kp); - unsigned long addr; struct kprobe_ctlblk *kcb = get_kprobe_ctlblk(); + unsigned long stack; memcpy(&kcb->jprobe_saved_regs, regs, sizeof(struct pt_regs)); @@ -594,14 +594,10 @@ int __kprobes setjmp_pre_handler(struct kprobe *p, struct pt_regs *regs) regs->psw.addr = (unsigned long)(jp->entry) | PSW_ADDR_AMODE; regs->psw.mask &= ~(PSW_MASK_IO | PSW_MASK_EXT); - /* r14 is the function return address */ - kcb->jprobe_saved_r14 = (unsigned long)regs->gprs[14]; /* r15 is the stack pointer */ - kcb->jprobe_saved_r15 = (unsigned long)regs->gprs[15]; - addr = (unsigned long)kcb->jprobe_saved_r15; + stack = (unsigned long) regs->gprs[15]; - memcpy(kcb->jprobes_stack, (kprobe_opcode_t *) addr, - MIN_STACK_SIZE(addr)); + memcpy(kcb->jprobes_stack, (void *) stack, MIN_STACK_SIZE(stack)); return 1; } @@ -618,13 +614,14 @@ void __kprobes jprobe_return_end(void) int __kprobes longjmp_break_handler(struct kprobe *p, struct pt_regs *regs) { struct kprobe_ctlblk *kcb = get_kprobe_ctlblk(); - unsigned long stack_addr = (unsigned long)(kcb->jprobe_saved_r15); + unsigned long stack; + + stack = (unsigned long) kcb->jprobe_saved_regs.gprs[15]; /* Put the regs back */ memcpy(regs, &kcb->jprobe_saved_regs, sizeof(struct pt_regs)); /* put the stack back */ - memcpy((kprobe_opcode_t *) stack_addr, kcb->jprobes_stack, - MIN_STACK_SIZE(stack_addr)); + memcpy((void *) stack, kcb->jprobes_stack, MIN_STACK_SIZE(stack)); preempt_enable_no_resched(); return 1; } |