diff options
Diffstat (limited to 'sysdeps/mips/atomicity.h')
| -rw-r--r-- | sysdeps/mips/atomicity.h | 36 |
1 files changed, 23 insertions, 13 deletions
diff --git a/sysdeps/mips/atomicity.h b/sysdeps/mips/atomicity.h index 1fe1b7aebb..4d185075c4 100644 --- a/sysdeps/mips/atomicity.h +++ b/sysdeps/mips/atomicity.h @@ -33,11 +33,15 @@ exchange_and_add (volatile uint32_t *mem, int val) __asm__ __volatile__ ("/* Inline exchange & add */\n\t" + "ll %0,%3\n" "1:\n\t" - "ll %0,%3\n\t" "addu %1,%4,%0\n\t" "sc %1,%2\n\t" - "beqz %1,1b\n\t" + ".set push\n\t" + ".set noreorder\n\t" + "beqzl %1,1b\n\t" + " ll %0,%3\n\t" + ".set pop\n\t" "/* End exchange & add */" : "=&r"(result), "=&r"(tmp), "=m"(*mem) : "m" (*mem), "r"(val) @@ -54,11 +58,15 @@ atomic_add (volatile uint32_t *mem, int val) __asm__ __volatile__ ("/* Inline atomic add */\n\t" + "ll %0,%2\n" "1:\n\t" - "ll %0,%2\n\t" "addu %0,%3,%0\n\t" "sc %0,%1\n\t" - "beqz %0,1b\n\t" + ".set push\n\t" + ".set noreorder\n\t" + "beqzl %0,1b\n\t" + " ll %0,%2\n\t" + ".set pop\n\t" "/* End atomic add */" : "=&r"(result), "=m"(*mem) : "m" (*mem), "r"(val) @@ -69,22 +77,24 @@ static inline int __attribute__ ((unused)) compare_and_swap (volatile long int *p, long int oldval, long int newval) { - long int ret; + long int ret, temp; __asm__ __volatile__ ("/* Inline compare & swap */\n\t" + "ll %1,%5\n" "1:\n\t" - "ll %0,%4\n\t" - ".set push\n" + ".set push\n\t" ".set noreorder\n\t" - "bne %0,%2,2f\n\t" - "move %0,%3\n\t" - ".set pop\n\t" - "sc %0,%1\n\t" - "beqz %0,1b\n" + "bne %1,%3,2f\n\t" + " move %0,$0\n\t" + "move %0,%4\n\t" + "sc %0,%2\n\t" + "beqzl %0,1b\n\t" + " ll %1,%5\n\t" + ".set pop\n" "2:\n\t" "/* End compare & swap */" - : "=&r" (ret), "=m" (*p) + : "=&r" (ret), "=&r" (temp), "=m" (*p) : "r" (oldval), "r" (newval), "m" (*p) : "memory"); |