From fd522a8dec11a08b5fdd23982193808e268be19e Mon Sep 17 00:00:00 2001 From: Catalin Marinas Date: Mon, 29 Mar 2010 10:29:46 +0100 Subject: ARM: 6006/1: ARM: Use the correct NOP size in memmove for Thumb-2 kernel builds When compiling the kernel to Thumb-2, using a 16-bit NOP in the memmove() implementation causes the preceding ADD PC instruction to branch incorrectly in the middle of a 32-bit LDR or STR instruction. The memmove() code is now similar to the memcpy() template. Signed-off-by: Catalin Marinas Signed-off-by: Russell King --- arch/arm/lib/memmove.S | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'arch/arm/lib') diff --git a/arch/arm/lib/memmove.S b/arch/arm/lib/memmove.S index 5025c863713..938fc14f962 100644 --- a/arch/arm/lib/memmove.S +++ b/arch/arm/lib/memmove.S @@ -74,7 +74,7 @@ ENTRY(memmove) rsb ip, ip, #32 addne pc, pc, ip @ C is always clear here b 7f -6: nop +6: W(nop) W(ldr) r3, [r1, #-4]! W(ldr) r4, [r1, #-4]! W(ldr) r5, [r1, #-4]! @@ -85,7 +85,7 @@ ENTRY(memmove) add pc, pc, ip nop - nop + W(nop) W(str) r3, [r0, #-4]! W(str) r4, [r0, #-4]! W(str) r5, [r0, #-4]! -- cgit v1.2.3-18-g5258