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match glibc/lsb cancellation abi on i386

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glibc made the ridiculous choice to use pass-by-register calling
convention for these functions, which is impossible to duplicate
directly on non-gcc compilers. instead, we use ugly asm to wrap and
convert the calling convention. presumably this works with every
compiler anyone could potentially want to use.
This commit is contained in:
Rich Felker 2011-03-25 22:13:57 -04:00
commit ea343364a7
8 changed files with 57 additions and 0 deletions
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19
arch/i386/bits/pthread.h
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@ -4,3 +4,22 @@ struct __ptcb {
struct __ptcb *__next;
void *__ptrs[3];
};
static inline void __pthread_register_cancel_2(struct __ptcb *__cb)
{
__asm__ __volatile__( "call __pthread_register_cancel" : : "a"(__cb) );
}
static inline void __pthread_unregister_cancel_2(struct __ptcb *__cb)
{
__asm__ __volatile__( "call __pthread_unregister_cancel" : : "a"(__cb) );
}
static inline void __pthread_unwind_next_2(struct __ptcb *__cb)
{
__asm__ __volatile__( "call __pthread_unwind_next" : : "a"(__cb) );
}
#define __pthread_register_cancel __pthread_register_cancel_2
#define __pthread_unregister_cancel __pthread_unregister_cancel_2
#define __pthread_unwind_next __pthread_unwind_next_2