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Make mutex hints gcc-only, improve a type in __arch_compare_and_exchange_bool_32_acq

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Stan Shebs 2018-09-26 13:50:57 -07:00 committed by Fangrui Song
parent 7724302310
commit bb112e11de
1 changed files with 2 additions and 2 deletions
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4
sysdeps/powerpc/powerpc64/atomic-machine.h
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@ -25,7 +25,7 @@
adjacent to the lock word after the Store Conditional and the hint
should be false. */
#if defined _ARCH_PWR6 || defined _ARCH_PWR6X
#if (defined _ARCH_PWR6 || defined _ARCH_PWR6X) && !defined __clang__
# define MUTEX_HINT_ACQ ",1"
# define MUTEX_HINT_REL ",0"
#else
@ -45,7 +45,7 @@
value as unsigned. So we explicitly clear the high 32 bits in oldval. */
#define __arch_compare_and_exchange_bool_32_acq(mem, newval, oldval) \
({ \
unsigned int __tmp, __tmp2; \
unsigned int __tmp; unsigned long __tmp2; \
__asm __volatile (" clrldi %1,%1,32\n" \
"1: lwarx %0,0,%2" MUTEX_HINT_ACQ "\n" \
" subf. %0,%1,%0\n" \