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Commit a882b3b0 authored by Heiko Carstens's avatar Heiko Carstens Committed by Martin Schwidefsky
Browse files

s390/kprobes: use insn_length helper function 



Signed-off-by: default avatarHeiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: default avatarMartin Schwidefsky <schwidefsky@de.ibm.com>
parent 0f20822a

arch/s390/kernel/kprobes.c

+5 −4
Original line number Diff line number Diff line
@@ -26,11 +26,12 @@ 
#include <linux/stop_machine.h>

#include <linux/kdebug.h>

#include <linux/uaccess.h>

#include <asm/cacheflush.h>

#include <asm/sections.h>

#include <linux/module.h>

#include <linux/slab.h>

#include <linux/hardirq.h>

#include <asm/cacheflush.h>

#include <asm/sections.h>

#include <asm/dis.h>



DEFINE_PER_CPU(struct kprobe *, current_kprobe);

DEFINE_PER_CPU(struct kprobe_ctlblk, kprobe_ctlblk);
@@ -208,7 +209,7 @@ static void __kprobes copy_instruction(struct kprobe *p) 
	s64 disp, new_disp;

	u64 addr, new_addr;



	memcpy(p->ainsn.insn, p->addr, ((p->opcode >> 14) + 3) & -2);

	memcpy(p->ainsn.insn, p->addr, insn_length(p->opcode >> 8));

	if (!is_insn_relative_long(p->ainsn.insn))

		return;

	/*
@@ -608,7 +609,7 @@ static void __kprobes resume_execution(struct kprobe *p, struct pt_regs *regs) 
		ip += (unsigned long) p->addr - (unsigned long) p->ainsn.insn;



	if (fixup & FIXUP_BRANCH_NOT_TAKEN) {

		int ilen = ((p->ainsn.insn[0] >> 14) + 3) & -2;

		int ilen = insn_length(p->ainsn.insn[0] >> 8);

		if (ip - (unsigned long) p->ainsn.insn == ilen)

			ip = (unsigned long) p->addr + ilen;

	}