/* cheat and reuse CRTJMP macro from dynlink code */
#include "dynlink.h"
-static volatile int lock;
static void *unmap_base;
static size_t unmap_size;
static char shared_stack[256];
void __unmapself(void *base, size_t size)
{
- int tid=__pthread_self()->tid;
char *stack = shared_stack + sizeof shared_stack;
stack -= (uintptr_t)stack % 16;
- while (lock || a_cas(&lock, 0, tid))
- a_spin();
- __syscall(SYS_set_tid_address, &lock);
unmap_base = base;
unmap_size = size;
CRTJMP(do_unmap, stack);