diff options
Diffstat (limited to 'include/asm-i386/rwlock.h')
| -rw-r--r-- | include/asm-i386/rwlock.h | 24 |
1 files changed, 11 insertions, 13 deletions
diff --git a/include/asm-i386/rwlock.h b/include/asm-i386/rwlock.h index 3ac1ba98b1bc..87c069ccba08 100644 --- a/include/asm-i386/rwlock.h +++ b/include/asm-i386/rwlock.h | |||
| @@ -21,21 +21,21 @@ | |||
| 21 | #define RW_LOCK_BIAS_STR "0x01000000" | 21 | #define RW_LOCK_BIAS_STR "0x01000000" |
| 22 | 22 | ||
| 23 | #define __build_read_lock_ptr(rw, helper) \ | 23 | #define __build_read_lock_ptr(rw, helper) \ |
| 24 | asm volatile(LOCK_PREFIX " ; subl $1,(%0)\n\t" \ | 24 | asm volatile(LOCK_PREFIX " subl $1,(%0)\n\t" \ |
| 25 | "jns 1f\n" \ | 25 | "jns 1f\n" \ |
| 26 | "call " helper "\n\t" \ | 26 | "call " helper "\n\t" \ |
| 27 | "1:\n" \ | 27 | "1:\n" \ |
| 28 | :"a" (rw) : "memory") | 28 | ::"a" (rw) : "memory") |
| 29 | 29 | ||
| 30 | #define __build_read_lock_const(rw, helper) \ | 30 | #define __build_read_lock_const(rw, helper) \ |
| 31 | asm volatile(LOCK_PREFIX " ; subl $1,%0\n\t" \ | 31 | asm volatile(LOCK_PREFIX " subl $1,%0\n\t" \ |
| 32 | "jns 1f\n" \ | 32 | "jns 1f\n" \ |
| 33 | "pushl %%eax\n\t" \ | 33 | "pushl %%eax\n\t" \ |
| 34 | "leal %0,%%eax\n\t" \ | 34 | "leal %0,%%eax\n\t" \ |
| 35 | "call " helper "\n\t" \ | 35 | "call " helper "\n\t" \ |
| 36 | "popl %%eax\n\t" \ | 36 | "popl %%eax\n\t" \ |
| 37 | "1:\n" : \ | 37 | "1:\n" \ |
| 38 | "+m" (*(volatile int *)rw) : : "memory") | 38 | :"+m" (*(volatile int *)rw) : : "memory") |
| 39 | 39 | ||
| 40 | #define __build_read_lock(rw, helper) do { \ | 40 | #define __build_read_lock(rw, helper) do { \ |
| 41 | if (__builtin_constant_p(rw)) \ | 41 | if (__builtin_constant_p(rw)) \ |
| @@ -45,23 +45,21 @@ | |||
| 45 | } while (0) | 45 | } while (0) |
| 46 | 46 | ||
| 47 | #define __build_write_lock_ptr(rw, helper) \ | 47 | #define __build_write_lock_ptr(rw, helper) \ |
| 48 | asm volatile(LOCK_PREFIX " ; subl $" RW_LOCK_BIAS_STR ",(%0)\n\t" \ | 48 | asm volatile(LOCK_PREFIX " subl $" RW_LOCK_BIAS_STR ",(%0)\n\t" \ |
| 49 | "jz 1f\n" \ | 49 | "jz 1f\n" \ |
| 50 | "call " helper "\n\t" \ | 50 | "call " helper "\n\t" \ |
| 51 | "1:\n", \ | 51 | "1:\n" \ |
| 52 | "subl $" RW_LOCK_BIAS_STR ",(%0)\n\t", \ | 52 | ::"a" (rw) : "memory") |
| 53 | :"a" (rw) : "memory") | ||
| 54 | 53 | ||
| 55 | #define __build_write_lock_const(rw, helper) \ | 54 | #define __build_write_lock_const(rw, helper) \ |
| 56 | asm volatile(LOCK_PREFIX " ; subl $" RW_LOCK_BIAS_STR ",%0\n\t" \ | 55 | asm volatile(LOCK_PREFIX " subl $" RW_LOCK_BIAS_STR ",%0\n\t" \ |
| 57 | "jz 1f\n" \ | 56 | "jz 1f\n" \ |
| 58 | "pushl %%eax\n\t" \ | 57 | "pushl %%eax\n\t" \ |
| 59 | "leal %0,%%eax\n\t" \ | 58 | "leal %0,%%eax\n\t" \ |
| 60 | "call " helper "\n\t" \ | 59 | "call " helper "\n\t" \ |
| 61 | "popl %%eax\n\t" \ | 60 | "popl %%eax\n\t" \ |
| 62 | "1:\n", \ | 61 | "1:\n" \ |
| 63 | "subl $" RW_LOCK_BIAS_STR ",%0\n\t", \ | 62 | :"+m" (*(volatile int *)rw) : : "memory") |
| 64 | "+m" (*(volatile int *)rw) : : "memory") | ||
| 65 | 63 | ||
| 66 | #define __build_write_lock(rw, helper) do { \ | 64 | #define __build_write_lock(rw, helper) do { \ |
| 67 | if (__builtin_constant_p(rw)) \ | 65 | if (__builtin_constant_p(rw)) \ |