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alpha support

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git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@111 c046a42c-6fe2-441c-8c8c-71466251a162
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bellard
2003-04-29 21:07:28 +00:00
parent 43f04c233c
commit e026db5893
1 changed files with 19 additions and 0 deletions
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19
exec-i386.c
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@@ -102,6 +102,25 @@ static inline int testandset (int *p)
} }
#endif #endif
#ifdef __alpha__
int testandset (int *p)
{
int ret;
unsigned long one;
__asm__ __volatile__ ("0: mov 1,%2\n"
" ldl_l %0,%1\n"
" stl_c %2,%1\n"
" beq %2,1f\n"
".subsection 2\n"
"1: br 0b\n"
".previous"
: "=r" (ret), "=m" (*p), "=r" (one)
: "m" (*p));
return ret;
}
#endif
int global_cpu_lock = 0; int global_cpu_lock = 0;
void cpu_lock(void) void cpu_lock(void)