From e677724884c175e978b463cf941ecb9310d3b900 Mon Sep 17 00:00:00 2001 From: Alexander Graf Date: Mon, 13 Jun 2016 14:01:07 +0200 Subject: [PATCH] arm: Fix setjmp The setjmp/longjmp implementation did not work on thumb1 implementations because it used instruction encodings that don't exist on thumb1 yet. This patch limits itself to thumb1 instruction set for 32bit arm and removes a superfluous printf along the way. Signed-off-by: Alexander Graf --- arch/arm/include/asm/setjmp.h | 9 ++++----- 1 file changed, 4 insertions(+), 5 deletions(-) diff --git a/arch/arm/include/asm/setjmp.h b/arch/arm/include/asm/setjmp.h index b8b85b79dd..ae738b2457 100644 --- a/arch/arm/include/asm/setjmp.h +++ b/arch/arm/include/asm/setjmp.h @@ -43,13 +43,14 @@ static inline int setjmp(jmp_buf jmp) #else asm volatile( #ifdef CONFIG_SYS_THUMB_BUILD - "adr r0, jmp_target + 1\n" + "adr r0, jmp_target\n" + "add r0, r0, $1\n" #else "adr r0, jmp_target\n" #endif "mov r1, %1\n" "mov r2, sp\n" - "stm r1, {r0, r2, r4, r5, r6, r7}\n" + "stm r1!, {r0, r2, r4, r5, r6, r7}\n" "b 2f\n" "jmp_target: " "mov %0, #1\n" @@ -61,8 +62,6 @@ static inline int setjmp(jmp_buf jmp) "cc", "memory"); #endif -printf("%s:%d target=%#lx\n", __func__, __LINE__, jmp->target); - return r; } @@ -84,7 +83,7 @@ static inline __noreturn void longjmp(jmp_buf jmp) #else asm volatile( "mov r1, %0\n" - "ldm r1, {r0, r2, r4, r5, r6, r7}\n" + "ldm r1!, {r0, r2, r4, r5, r6, r7}\n" "mov sp, r2\n" "bx r0\n" : -- 2.25.1