[klibc] [PATCH] fix ARM longjmp with zero 'val'.
We need to set the condition codes on the ARM. The previous version was
using a left over condition code from the caller. Also, use conditional
execution to eliminate branch and reduce size.
Signed-off-by: Bill Pringlemeir <bpringle@sympatico.ca>
Signed-off-by: maximilian attems <max@stro.at>
diff --git a/usr/klibc/arch/arm/setjmp.S b/usr/klibc/arch/arm/setjmp.S
index 92ffc43..9f96274 100644
--- a/usr/klibc/arch/arm/setjmp.S
+++ b/usr/klibc/arch/arm/setjmp.S
@@ -40,10 +40,9 @@
.type longjmp, #function
longjmp:
ldmia r0, {r4, r5, r6, r7, r8, r9, r10, fp, sp, lr}
- mov r0, r1
- bne 1f
- mov r0, #1
-1: BX(lr)
+ movs r0, r1
+ moveq r0, #1
+ BX(lr)
.size longjmp,.-longjmp
#else /* __thumb__ */
