factor/vm/os-openbsd-x86.32.h

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#include <i386/signal.h>
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INLINE void *openbsd_stack_pointer(void *uap)
{
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struct sigcontext *sc = (struct sigcontext*) uap;
return (void *)sc->sc_esp;
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}
#define ucontext_stack_pointer openbsd_stack_pointer
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#define UAP_PROGRAM_COUNTER(uap) (((struct sigcontext*)(uap))->sc_eip)