musl/arch/arm/pthread_arch.h

static inline struct pthread *__pthread_self()
{
	return ((void *(*)(void))0xffff0fe0)();
}

#define CANCEL_REG_SP 16
#define CANCEL_REG_IP 18
initial commit of the arm port this port assumes eabi calling conventions, eabi linux syscall convention, and presence of the kernel helpers at 0xffff0f?0 needed for threads support. otherwise it makes very few assumptions, and the code should work even on armv4 without thumb support, as well as on systems with thumb interworking. the bits headers declare this a little endian system, but as far as i can tell the code should work equally well on big endian. some small details are probably broken; so far, testing has been limited to qemu/aboriginal linux. 15 years ago			`static inline struct pthread *__pthread_self()`
			`{`
			`return ((void ()(void))0xffff0fe0)();`
			`}`

			`#define CANCEL_REG_SP 16`
			`#define CANCEL_REG_IP 18`