musl/arch/aarch64/pthread_arch.h

static inline struct pthread *__pthread_self()
{
	char *self;
	__asm__ __volatile__ ("mrs %0,tpidr_el0" : "=r"(self));
	return (void*)(self + 16 - sizeof(struct pthread));
}

#define TLS_ABOVE_TP
#define TP_ADJ(p) ((char *)(p) + sizeof(struct pthread) - 16)

#define MC_PC pc
add aarch64 port This adds complete aarch64 target support including bigendian subarch. Some of the long double math functions are known to be broken otherwise interfaces should be fully functional, but at this point consider this port experimental. Initial work on this port was done by Sireesh Tripurari and Kevin Bortis. 2015-03-10 21:18:41 +00:00			`static inline struct pthread *__pthread_self()`
			`{`
			`char *self;`
			`__asm__ __volatile__ ("mrs %0,tpidr_el0" : "=r"(self));`
			`return (void*)(self + 16 - sizeof(struct pthread));`
			`}`

			`#define TLS_ABOVE_TP`
			`#define TP_ADJ(p) ((char *)(p) + sizeof(struct pthread) - 16)`

properly access mcontext_t program counter in cancellation handler using the actual mcontext_t definition rather than an overlaid pointer array both improves correctness/readability and eliminates some ugly hacks for archs with 64-bit registers bit 32-bit program counter. also fix UB due to comparison of pointers not in a common array object. 2015-11-02 17:39:28 +00:00			`#define MC_PC pc`