diff options
| -rw-r--r-- | arch/m32r/Kconfig | 4 | ||||
| -rw-r--r-- | include/asm-m32r/system.h | 11 |
2 files changed, 15 insertions, 0 deletions
diff --git a/arch/m32r/Kconfig b/arch/m32r/Kconfig index 9740d6b8ae11..c3bb8a755b00 100644 --- a/arch/m32r/Kconfig +++ b/arch/m32r/Kconfig @@ -241,6 +241,10 @@ config GENERIC_CALIBRATE_DELAY bool default y +config SCHED_NO_NO_OMIT_FRAME_POINTER + bool + default y + config PREEMPT bool "Preemptible Kernel" help diff --git a/include/asm-m32r/system.h b/include/asm-m32r/system.h index f62f5c9abba6..b291b2f72954 100644 --- a/include/asm-m32r/system.h +++ b/include/asm-m32r/system.h @@ -21,12 +21,22 @@ * `next' and `prev' should be struct task_struct, but it isn't always defined */ +#if defined(CONFIG_FRAME_POINTER) || \ + !defined(CONFIG_SCHED_NO_NO_OMIT_FRAME_POINTER) +#define M32R_PUSH_FP " push fp\n" +#define M32R_POP_FP " pop fp\n" +#else +#define M32R_PUSH_FP "" +#define M32R_POP_FP "" +#endif + #define switch_to(prev, next, last) do { \ __asm__ __volatile__ ( \ " seth lr, #high(1f) \n" \ " or3 lr, lr, #low(1f) \n" \ " st lr, @%4 ; store old LR \n" \ " ld lr, @%5 ; load new LR \n" \ + M32R_PUSH_FP \ " st sp, @%2 ; store old SP \n" \ " ld sp, @%3 ; load new SP \n" \ " push %1 ; store `prev' on new stack \n" \ @@ -34,6 +44,7 @@ " .fillinsn \n" \ "1: \n" \ " pop %0 ; restore `__last' from new stack \n" \ + M32R_POP_FP \ : "=r" (last) \ : "0" (prev), \ "r" (&(prev->thread.sp)), "r" (&(next->thread.sp)), \ |