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| | #include <stdint.h>
#include <elf.h>
#include "pthread_impl.h"
#include "libc.h"
#define HWCAP_TLS (1 << 15)
extern hidden const unsigned char
__a_barrier_oldkuser[], __a_barrier_v6[], __a_barrier_v7[], __a_barrier_m[],
__a_cas_v6[], __a_cas_v7[], __a_cas_m[], __a_cas_intmask_m[],
__a_gettp_cp15[], __a_gettp_cp15_m[], __a_gettp_syscall_m[];
#define __a_barrier_kuser 0xffff0fa0
#define __a_barrier_oldkuser (uintptr_t)__a_barrier_oldkuser
#define __a_barrier_v6 (uintptr_t)__a_barrier_v6
#define __a_barrier_v7 (uintptr_t)__a_barrier_v7
#define __a_barrier_m (uintptr_t)__a_barrier_m
#define __a_cas_kuser 0xffff0fc0
#define __a_cas_v6 (uintptr_t)__a_cas_v6
#define __a_cas_v7 (uintptr_t)__a_cas_v7
#define __a_cas_m (uintptr_t)__a_cas_m
#define __a_cas_intmask_m (uintptr_t)__a_cas_intmask_m
#define __a_gettp_kuser 0xffff0fe0
#define __a_gettp_cp15 (uintptr_t)__a_gettp_cp15
#define __a_gettp_cp15_m (uintptr_t)__a_gettp_cp15_m
#define __a_gettp_syscall_m (uintptr_t)__a_gettp_syscall_m
extern hidden uintptr_t __a_barrier_ptr, __a_cas_ptr, __a_gettp_ptr;
int __set_thread_area(void *p)
{
#if __ARM_ARCH_PROFILE == 'M'
__a_cas_ptr = __a_cas_m;
__a_barrier_ptr = __a_barrier_m;
if (__hwcap & HWCAP_TLS) {
__a_gettp_ptr = __a_gettp_cp15_m;
} else {
size_t *aux;
__a_gettp_ptr = __a_gettp_syscall_m;
for (aux=libc.auxv; *aux; aux+=2) {
if (*aux != AT_PLATFORM) continue;
const char *s = (void *)aux[1];
if (s[0]=='v' && s[1]=='6') {
__a_cas_ptr = __a_cas_intmask_m;
break;
}
}
}
#elif !__ARM_ARCH_7A__ && !__ARM_ARCH_7R__ && __ARM_ARCH < 7
if (__hwcap & HWCAP_TLS) {
size_t *aux;
__a_cas_ptr = __a_cas_v7;
__a_barrier_ptr = __a_barrier_v7;
for (aux=libc.auxv; *aux; aux+=2) {
if (*aux != AT_PLATFORM) continue;
const char *s = (void *)aux[1];
if (s[0]!='v' || s[1]!='6' || s[2]-'0'<10u) break;
__a_cas_ptr = __a_cas_v6;
__a_barrier_ptr = __a_barrier_v6;
break;
}
} else {
int ver = *(int *)0xffff0ffc;
__a_gettp_ptr = __a_gettp_kuser;
__a_cas_ptr = __a_cas_kuser;
__a_barrier_ptr = __a_barrier_kuser;
if (ver < 2) a_crash();
if (ver < 3) __a_barrier_ptr = __a_barrier_oldkuser;
}
#endif
return __syscall(0xf0005, p);
}
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