From 06d8f8178c5709ff21cfbe16b6c078d2669b6e80 Mon Sep 17 00:00:00 2001 From: Martin Kepplinger Date: Fri, 6 Nov 2015 16:31:05 -0800 Subject: [PATCH] arch/sh/kernel/traps_64.c: use sign_extend64() for sign extension Signed-off-by: Martin Kepplinger Cc: Peter Zijlstra Cc: Ingo Molnar Cc: Arnaldo Carvalho de Melo Cc: Thomas Gleixner Cc: "H. Peter Anvin" Cc: George Spelvin Cc: Rasmus Villemoes Cc: Maxime Coquelin Cc: Denys Vlasenko Cc: Yury Norov Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- arch/sh/kernel/cpu/sh5/unwind.c | 2 +- arch/sh/kernel/traps_64.c | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/sh/kernel/cpu/sh5/unwind.c b/arch/sh/kernel/cpu/sh5/unwind.c index 10aed41757fc..3a4fed406fc6 100644 --- a/arch/sh/kernel/cpu/sh5/unwind.c +++ b/arch/sh/kernel/cpu/sh5/unwind.c @@ -159,7 +159,7 @@ static int lookup_prev_stack_frame(unsigned long fp, unsigned long pc, /* Sign extend */ regcache[dest] = - ((((s64)(u64)op >> 10) & 0xffff) << 54) >> 54; + sign_extend64((((u64)op >> 10) & 0xffff), 9); break; case (0xd0 >> 2): /* addi */ case (0xd4 >> 2): /* addi.l */ diff --git a/arch/sh/kernel/traps_64.c b/arch/sh/kernel/traps_64.c index 112ea11c030d..d208c27ccc67 100644 --- a/arch/sh/kernel/traps_64.c +++ b/arch/sh/kernel/traps_64.c @@ -101,7 +101,7 @@ static int generate_and_check_address(struct pt_regs *regs, if (displacement_not_indexed) { __s64 displacement; displacement = (opcode >> 10) & 0x3ff; - displacement = ((displacement << 54) >> 54); /* sign extend */ + displacement = sign_extend64(displacement, 9); addr = (__u64)((__s64)base_address + (displacement << width_shift)); } else { __u64 offset; -- 2.39.5