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(__pthread_spin_lock): Use a different register in the delayed slot.

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Use branch likely.
This commit is contained in:
Ulrich Drepper 2002-02-03 02:26:07 +00:00
parent efa2cf2c54
commit 2bcefeb887
1 changed files with 8 additions and 7 deletions
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15
linuxthreads/sysdeps/mips/pspinlock.c
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@ -29,20 +29,21 @@
int
__pthread_spin_lock (pthread_spinlock_t *lock)
{
unsigned int tmp;
unsigned int tmp1, tmp2;
asm volatile
("\t\t\t# spin_lock\n\t"
"ll %1,%3\n"
"1:\n\t"
"ll %1,%2\n\t"
".set push\n\t"
".set noreorder\n\t"
"bnez %1,1b\n\t"
" li %1,1\n\t"
".set pop\n\t"
"sc %1,%0\n\t"
"beqz %1,1b"
: "=m" (*lock), "=&r" (tmp)
" li %2,1\n\t"
"sc %2,%0\n\t"
"beqzl %2,1b\n\t"
" ll %1,%3\n\t"
".set pop"
: "=m" (*lock), "=&r" (tmp1), "=&r" (tmp2)
: "m" (*lock)
: "memory");