You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
44 lines
1.6 KiB
44 lines
1.6 KiB
http://git.yoctoproject.org/cgit/cgit.cgi/poky/commit/?id=e3a384578f677c05d812d99c2c92aa13670bd06a
|
|
|
|
Upstream-Status: Pending
|
|
|
|
Remove the `q' suffix on x86-64 atomic instructions.
|
|
|
|
We don't need the `q' suffix on x86_64 atomic instructions for AO_t,
|
|
which is defined as "unsigned long". "unsigned long" is 32bit for x32
|
|
and 64bit for x86-64. The register operand in x86-64 atomic instructions
|
|
is sufficient to properly determine the register size.
|
|
|
|
Received this patch from H.J. Lu <hjl.tools@gmail.com>
|
|
Signed-Off-By: Nitin A Kamble <nitin.a.kamble@intel.com> 2011/12/02
|
|
|
|
--- a/src/atomic_ops/sysdeps/gcc/x86_64.h
|
|
+++ b/src/atomic_ops/sysdeps/gcc/x86_64.h
|
|
@@ -56,7 +56,7 @@ AO_fetch_and_add_full (volatile AO_t *p,
|
|
{
|
|
AO_t result;
|
|
|
|
- __asm__ __volatile__ ("lock; xaddq %0, %1" :
|
|
+ __asm__ __volatile__ ("lock; xadd %0, %1" :
|
|
"=r" (result), "=m" (*p) : "0" (incr), "m" (*p)
|
|
: "memory");
|
|
return result;
|
|
@@ -106,7 +106,7 @@ AO_int_fetch_and_add_full (volatile unsi
|
|
AO_INLINE void
|
|
AO_or_full (volatile AO_t *p, AO_t incr)
|
|
{
|
|
- __asm__ __volatile__ ("lock; orq %1, %0" :
|
|
+ __asm__ __volatile__ ("lock; or %1, %0" :
|
|
"=m" (*p) : "r" (incr), "m" (*p) : "memory");
|
|
}
|
|
|
|
@@ -131,7 +131,7 @@ AO_compare_and_swap_full(volatile AO_t *
|
|
AO_t old, AO_t new_val)
|
|
{
|
|
char result;
|
|
- __asm__ __volatile__("lock; cmpxchgq %3, %0; setz %1"
|
|
+ __asm__ __volatile__("lock; cmpxchg %3, %0; setz %1"
|
|
: "=m"(*addr), "=q"(result)
|
|
: "m"(*addr), "r" (new_val), "a"(old) : "memory");
|
|
return (int) result;
|