42 lines
1.5 KiB
Diff
42 lines
1.5 KiB
Diff
Upstream-Status: Pending
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Remove the `q' suffix on x86-64 atomic instructions.
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We don't need the `q' suffix on x86_64 atomic instructions for AO_t,
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which is defined as "unsigned long". "unsigned long" is 32bit for x32
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and 64bit for x86-64. The register operand in x86-64 atomic instructions
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is sufficient to properly determine the register size.
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Received this patch from H.J. Lu <hjl.tools@gmail.com>
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Signed-Off-By: Nitin A Kamble <nitin.a.kamble@intel.com> 2011/12/02
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--- libatomic_ops-1.2/src/atomic_ops/sysdeps/gcc/x86_64.h.x32 2005-09-28 17:16:38.000000000 -0700
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+++ libatomic_ops-1.2/src/atomic_ops/sysdeps/gcc/x86_64.h 2011-12-02 09:29:54.265251875 -0800
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@@ -60,7 +60,7 @@ AO_fetch_and_add_full (volatile AO_t *p,
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{
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AO_t result;
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- __asm__ __volatile__ ("lock; xaddq %0, %1" :
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+ __asm__ __volatile__ ("lock; xadd %0, %1" :
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"=r" (result), "=m" (*p) : "0" (incr), "m" (*p)
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: "memory");
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return result;
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@@ -111,7 +111,7 @@ AO_int_fetch_and_add_full (volatile unsi
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AO_INLINE void
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AO_or_full (volatile AO_t *p, AO_t incr)
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{
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- __asm__ __volatile__ ("lock; orq %1, %0" :
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+ __asm__ __volatile__ ("lock; or %1, %0" :
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"=m" (*p) : "r" (incr), "m" (*p) : "memory");
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}
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@@ -136,7 +136,7 @@ AO_compare_and_swap_full(volatile AO_t *
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AO_t old, AO_t new_val)
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{
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char result;
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- __asm__ __volatile__("lock; cmpxchgq %3, %0; setz %1"
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+ __asm__ __volatile__("lock; cmpxchg %3, %0; setz %1"
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: "=m"(*addr), "=q"(result)
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: "m"(*addr), "r" (new_val), "a"(old) : "memory");
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return (int) result;
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