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make mips64 a_sc_p atomic primitive's asm constraints work with clang

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apparently clang does not accept matching-register input and output
constraints that differ in size (32-bit vs 64-bit).

based on patch by Jaydeep Patil.
This commit is contained in:
Rich Felker 2016-03-11 00:02:10 -05:00
parent 636a4799dd
commit 27bf42cd9d
1 changed files with 1 additions and 1 deletions
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2
arch/mips64/atomic_arch.h
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@ -31,7 +31,7 @@ static inline void *a_ll_p(volatile long *p)
#define a_sc_p a_sc_p #define a_sc_p a_sc_p
static inline int a_sc_p(volatile long *p, void *v) static inline int a_sc_p(volatile long *p, void *v)
{ {
int r; long r;
__asm__ __volatile__ ( __asm__ __volatile__ (
"scd %0, %1" "scd %0, %1"
: "=r"(r), "=m"(*p) : "0"(v) : "memory"); : "=r"(r), "=m"(*p) : "0"(v) : "memory");