3 #include "pthread_impl.h"
6 #define HWCAP_TLS (1 << 15)
8 extern const unsigned char __attribute__((__visibility__("hidden")))
9 __a_barrier_dummy[], __a_barrier_oldkuser[],
10 __a_barrier_v6[], __a_barrier_v7[],
11 __a_cas_dummy[], __a_cas_v6[], __a_cas_v7[],
14 #define __a_barrier_kuser 0xffff0fa0
15 #define __a_cas_kuser 0xffff0fc0
16 #define __a_gettp_kuser 0xffff0fe0
18 extern uintptr_t __attribute__((__visibility__("hidden")))
19 __a_barrier_ptr, __a_cas_ptr, __a_gettp_ptr;
21 #define SET(op,ver) (__a_##op##_ptr = \
22 (uintptr_t)__a_##op##_##ver - (uintptr_t)__a_##op##_dummy)
24 int __set_thread_area(void *p)
26 #if !__ARM_ARCH_7A__ && !__ARM_ARCH_7R__ && __ARM_ARCH < 7
27 if (__hwcap & HWCAP_TLS) {
31 for (aux=libc.auxv; *aux; aux+=2) {
32 if (*aux != AT_PLATFORM) continue;
33 const char *s = (void *)aux[1];
34 if (s[0]!='v' || s[1]!='6' || s[2]-'0'<10u) break;
40 int ver = *(int *)0xffff0ffc;
44 if (ver < 2) a_crash();
45 if (ver < 3) SET(barrier, oldkuser);
48 return __syscall(0xf0005, p);