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| author | Roland McGrath <roland@gnu.org> | 2003-03-22 00:05:02 +0000 |
|---|---|---|
| committer | Roland McGrath <roland@gnu.org> | 2003-03-22 00:05:02 +0000 |
| commit | 002ff853059c14c55188a6cbe4fdbc4baa06219e (patch) | |
| tree | ae49701bf87c2efccb8c954276c19ff53f8f5d27 /sysdeps/x86_64 | |
| parent | 8f9fb0000e345b16902311b2d265f83b329e69c5 (diff) | |
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2003-03-21 Roland McGrath <roland@redhat.com>
* sysdeps/i386/i486/bits/atomic.h (atomic_bit_set): Use "ir"
constraint to permit non-constant BIT argument.
(atomic_bit_test_set): Likewise.
* sysdeps/x86_64/bits/atomic.h (atomic_bit_test_set): Likewise.
(atomic_bit_set): Likewise. Use 1UL in case that BIT might be >= 32.
For quadword case, use "i" constraint if __builtin_constant_p and < 32
or "r" constraint otherwise.
Diffstat (limited to 'sysdeps/x86_64')
| -rw-r--r-- | sysdeps/x86_64/bits/atomic.h | 18 |
1 files changed, 11 insertions, 7 deletions
diff --git a/sysdeps/x86_64/bits/atomic.h b/sysdeps/x86_64/bits/atomic.h index 00f55862e6..1d41e7761c 100644 --- a/sysdeps/x86_64/bits/atomic.h +++ b/sysdeps/x86_64/bits/atomic.h @@ -279,19 +279,23 @@ typedef uintmax_t uatomic_max_t; (void) ({ if (sizeof (*mem) == 1) \ __asm __volatile (LOCK "orb %b2, %0" \ : "=m" (*mem) \ - : "m" (*mem), "i" (1 << (bit))); \ + : "m" (*mem), "ir" (1 << (bit))); \ else if (sizeof (*mem) == 2) \ __asm __volatile (LOCK "orw %w2, %0" \ : "=m" (*mem) \ - : "m" (*mem), "i" (1 << (bit))); \ + : "m" (*mem), "ir" (1 << (bit))); \ else if (sizeof (*mem) == 4) \ __asm __volatile (LOCK "orl %2, %0" \ : "=m" (*mem) \ + : "m" (*mem), "ir" (1 << (bit))); \ + else if (__builtin_constant_p (bit) && (bit) < 32) \ + __asm __volatile (LOCK "orq %2, %0" \ + : "=m" (*mem) \ : "m" (*mem), "i" (1 << (bit))); \ else \ __asm __volatile (LOCK "orq %q2, %0" \ : "=m" (*mem) \ - : "m" (*mem), "i" (1 << (bit))); \ + : "m" (*mem), "r" (1UL << (bit))); \ }) @@ -300,17 +304,17 @@ typedef uintmax_t uatomic_max_t; if (sizeof (*mem) == 1) \ __asm __volatile (LOCK "btsb %3, %1; setc %0" \ : "=q" (__result), "=m" (*mem) \ - : "m" (*mem), "i" (bit)); \ + : "m" (*mem), "ir" (bit)); \ else if (sizeof (*mem) == 2) \ __asm __volatile (LOCK "btsw %3, %1; setc %0" \ : "=q" (__result), "=m" (*mem) \ - : "m" (*mem), "i" (bit)); \ + : "m" (*mem), "ir" (bit)); \ else if (sizeof (*mem) == 4) \ __asm __volatile (LOCK "btsl %3, %1; setc %0" \ : "=q" (__result), "=m" (*mem) \ - : "m" (*mem), "i" (bit)); \ + : "m" (*mem), "ir" (bit)); \ else \ __asm __volatile (LOCK "btsq %3, %1; setc %0" \ : "=q" (__result), "=m" (*mem) \ - : "m" (*mem), "i" (bit)); \ + : "m" (*mem), "ir" (bit)); \ __result; }) |