diff options
Diffstat (limited to 'include/asm-m32r/system.h')
| -rw-r--r-- | include/asm-m32r/system.h | 18 |
1 files changed, 14 insertions, 4 deletions
diff --git a/include/asm-m32r/system.h b/include/asm-m32r/system.h index 99ee09889ff7..8ee73d3f316d 100644 --- a/include/asm-m32r/system.h +++ b/include/asm-m32r/system.h @@ -10,6 +10,7 @@ * Copyright (C) 2004, 2006 Hirokazu Takata <takata at linux-m32r.org> */ +#include <linux/compiler.h> #include <asm/assembler.h> #ifdef __KERNEL__ @@ -21,12 +22,22 @@ * `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 +45,7 @@ " .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)), \ @@ -122,8 +134,6 @@ static inline void local_irq_disable(void) #define xchg(ptr,x) \ ((__typeof__(*(ptr)))__xchg((unsigned long)(x),(ptr),sizeof(*(ptr)))) -#define tas(ptr) (xchg((ptr),1)) - #ifdef CONFIG_SMP extern void __xchg_called_with_bad_pointer(void); #endif @@ -138,14 +148,14 @@ extern void __xchg_called_with_bad_pointer(void); "add3 "reg0", "addr", #0x2000; \n\t" \ "ld "reg0", @"reg0"; \n\t" \ "unlock "reg0", @"reg1"; \n\t" - /* FIXME: This workaround code cannot handle kenrel modules + /* FIXME: This workaround code cannot handle kernel modules * correctly under SMP environment. */ #else /* CONFIG_CHIP_M32700_TS1 */ #define DCACHE_CLEAR(reg0, reg1, addr) #endif /* CONFIG_CHIP_M32700_TS1 */ -static inline unsigned long +static __always_inline unsigned long __xchg(unsigned long x, volatile void * ptr, int size) { unsigned long flags; |