diff options
Diffstat (limited to 'arch/xtensa/include/asm/cmpxchg.h')
| -rw-r--r-- | arch/xtensa/include/asm/cmpxchg.h | 71 |
1 files changed, 36 insertions, 35 deletions
diff --git a/arch/xtensa/include/asm/cmpxchg.h b/arch/xtensa/include/asm/cmpxchg.h index 7ccc5cbf441b..a175f8aec3fb 100644 --- a/arch/xtensa/include/asm/cmpxchg.h +++ b/arch/xtensa/include/asm/cmpxchg.h @@ -27,25 +27,25 @@ __cmpxchg_u32(volatile int *p, int old, int new) unsigned long tmp, result; __asm__ __volatile__( - "1: l32ex %0, %3\n" - " bne %0, %4, 2f\n" - " mov %1, %2\n" - " s32ex %1, %3\n" - " getex %1\n" - " beqz %1, 1b\n" + "1: l32ex %[result], %[addr]\n" + " bne %[result], %[cmp], 2f\n" + " mov %[tmp], %[new]\n" + " s32ex %[tmp], %[addr]\n" + " getex %[tmp]\n" + " beqz %[tmp], 1b\n" "2:\n" - : "=&a" (result), "=&a" (tmp) - : "a" (new), "a" (p), "a" (old) + : [result] "=&a" (result), [tmp] "=&a" (tmp) + : [new] "a" (new), [addr] "a" (p), [cmp] "a" (old) : "memory" ); return result; #elif XCHAL_HAVE_S32C1I __asm__ __volatile__( - " wsr %2, scompare1\n" - " s32c1i %0, %1, 0\n" - : "+a" (new) - : "a" (p), "a" (old) + " wsr %[cmp], scompare1\n" + " s32c1i %[new], %[mem]\n" + : [new] "+a" (new), [mem] "+m" (*p) + : [cmp] "a" (old) : "memory" ); @@ -53,14 +53,14 @@ __cmpxchg_u32(volatile int *p, int old, int new) #else __asm__ __volatile__( " rsil a15, "__stringify(TOPLEVEL)"\n" - " l32i %0, %1, 0\n" - " bne %0, %2, 1f\n" - " s32i %3, %1, 0\n" + " l32i %[old], %[mem]\n" + " bne %[old], %[cmp], 1f\n" + " s32i %[new], %[mem]\n" "1:\n" " wsr a15, ps\n" " rsync\n" - : "=&a" (old) - : "a" (p), "a" (old), "r" (new) + : [old] "=&a" (old), [mem] "+m" (*p) + : [cmp] "a" (old), [new] "r" (new) : "a15", "memory"); return old; #endif @@ -129,13 +129,13 @@ static inline unsigned long xchg_u32(volatile int * m, unsigned long val) unsigned long tmp, result; __asm__ __volatile__( - "1: l32ex %0, %3\n" - " mov %1, %2\n" - " s32ex %1, %3\n" - " getex %1\n" - " beqz %1, 1b\n" - : "=&a" (result), "=&a" (tmp) - : "a" (val), "a" (m) + "1: l32ex %[result], %[addr]\n" + " mov %[tmp], %[val]\n" + " s32ex %[tmp], %[addr]\n" + " getex %[tmp]\n" + " beqz %[tmp], 1b\n" + : [result] "=&a" (result), [tmp] "=&a" (tmp) + : [val] "a" (val), [addr] "a" (m) : "memory" ); @@ -143,13 +143,14 @@ static inline unsigned long xchg_u32(volatile int * m, unsigned long val) #elif XCHAL_HAVE_S32C1I unsigned long tmp, result; __asm__ __volatile__( - "1: l32i %1, %2, 0\n" - " mov %0, %3\n" - " wsr %1, scompare1\n" - " s32c1i %0, %2, 0\n" - " bne %0, %1, 1b\n" - : "=&a" (result), "=&a" (tmp) - : "a" (m), "a" (val) + "1: l32i %[tmp], %[mem]\n" + " mov %[result], %[val]\n" + " wsr %[tmp], scompare1\n" + " s32c1i %[result], %[mem]\n" + " bne %[result], %[tmp], 1b\n" + : [result] "=&a" (result), [tmp] "=&a" (tmp), + [mem] "+m" (*m) + : [val] "a" (val) : "memory" ); return result; @@ -157,12 +158,12 @@ static inline unsigned long xchg_u32(volatile int * m, unsigned long val) unsigned long tmp; __asm__ __volatile__( " rsil a15, "__stringify(TOPLEVEL)"\n" - " l32i %0, %1, 0\n" - " s32i %2, %1, 0\n" + " l32i %[tmp], %[mem]\n" + " s32i %[val], %[mem]\n" " wsr a15, ps\n" " rsync\n" - : "=&a" (tmp) - : "a" (m), "a" (val) + : [tmp] "=&a" (tmp), [mem] "+m" (*m) + : [val] "a" (val) : "a15", "memory"); return tmp; #endif |