// Save callee-save registers.
	SAVE_R19_TO_R28(8)
	SAVE_F8_TO_F15(88)

	MOVD    m_g0(R0), g
	BL	runtime·save_g(SB)

	BL	runtime·mstart(SB)

	// Restore callee-save registers.
	RESTORE_R19_TO_R28(8)
	RESTORE_F8_TO_F15(88)

	// Go is all done with this OS thread.
	// Tell pthread everything is ok (we never join with this thread, so
	// the value here doesn't really matter).
	MOVD	$0, R0

	RET

	MOVD	$runtime·sigtrampgo(SB), R11
	BL	(R11)

#ifdef GOOS_ios
	// Switch to old stack.
	MOVD	(8*4)(RSP), R5
	MOVD	R5, RSP
#endif

	// Restore callee-save registers.
	RESTORE_R19_TO_R28(8*4)
	RESTORE_F8_TO_F15(8*14)

	RET

TEXT runtime·cgoSigtramp(SB),NOSPLIT,$0
	JMP	runtime·sigtramp(SB)

TEXT runtime·sigprocmask_trampoline(SB),NOSPLIT,$0
	MOVD	8(R0), R1	// arg 2 new

	// Restore signum to R0.
	MOVW	8(RSP), R0
	// R1 and R2 already contain info and ctx, respectively.
	MOVD	$runtime·sigtrampgo<ABIInternal>(SB), R3
	BL	(R3)

	// Restore callee-save registers.
	RESTORE_R19_TO_R28(8*4)
	RESTORE_F8_TO_F15(8*14)

	RET

// Called from c-abi, R0: sig, R1: info, R2: cxt
TEXT runtime·sigprofNonGoWrapper<>(SB),NOSPLIT,$176

	MOVD	g_m(g), R13
	MOVD	m_curg(R13), g	// g = m->curg
ret:
	// Restore callee-saved registers.
	MOVD	0(RSP), LR
	MOVD	(8*21)(RSP), R29
	RESTORE_F8_TO_F15(8*13)
	RESTORE_R19_TO_R28(8*3)
	ADD	$176, RSP
	JMP	(LR)

noswitch:
	// already on g0
	MOVD	R0, 8(RSP)	// func arg
	MOVD	R1, 16(RSP)	// func arg
	BL	runtime·racecallback(SB)
	JMP	ret

#ifndef TLSG_IS_VARIABLE