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#ifndef REGRESS_PIVOT_H
#define REGRESS_PIVOT_H
static void pivot(size_t *newstack) {
#if defined(__amd64__)
asm("mov %0, %%rsp; retq;" ::"r"(newstack));
#elif defined(__i386__)
asm("mov %0, %%esp; retl;" ::"r"(newstack));
#endif
}
#endif
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