third_party/musl/arch/m68k/pthread_arch.h - cobalt - Git at Google

 static inline uintptr_t __get_tp()
 {
 	return __syscall(SYS_get_thread_area);
 }

 #define TLS_ABOVE_TP
 #define GAP_ABOVE_TP 0

 #define TP_OFFSET 0x7000
 #define DTP_OFFSET 0x8000

 #define MC_PC gregs[R_PC]
	static inline uintptr_t __get_tp()
	{
	return __syscall(SYS_get_thread_area);
	}

	#define TLS_ABOVE_TP
	#define GAP_ABOVE_TP 0

	#define TP_OFFSET 0x7000
	#define DTP_OFFSET 0x8000

	#define MC_PC gregs[R_PC]