MOVW	(R6), R6
	CMP	$0, R6
	B.NE	done

dropm:
	MOVW	$runtime·dropm(SB), R0
	BL	(R0)

done:
	// Done!
	RET

// void setg(G*); set g. for use by needm.
TEXT runtime·setg(SB),NOSPLIT|NOFRAME,$0-4
	MOVW	gg+0(FP), R0
	B	setg<>(SB)

TEXT setg<>(SB),NOSPLIT|NOFRAME,$0-0
	MOVW	R0, g

	// Save g to thread-local storage.
#ifdef GOOS_windows
	B	runtime·save_g(SB)
#else

		// it may hit stack split that is not expected here.
		if gp != nil {
			setg(nil)
		}
		badsignal(uintptr(sig), c)
		// Restore g
		if gp != nil {
			setg(gp)
		}
		return
	}

	setg(gp.m.gsignal)

	// If some non-Go code called sigaltstack, adjust.
	var gsignalStack gsignalStack

	CMPBEQ	R11, $0, nocgo
	MOVW	AR0, R4			// (AR0 << 32 | AR1) is the TLS base pointer; MOVD is translated to EAR
	SLD	$32, R4, R4
	MOVW	AR1, R4			// arg 2: TLS base pointer
	MOVD	$setg_gcc<>(SB), R3 	// arg 1: setg
	MOVD	g, R2			// arg 0: G
	// C functions expect 160 bytes of space on caller stack frame
	// and an 8-byte aligned stack pointer
	MOVD	R15, R9			// save current stack (R9 is preserved in the Linux ABI)

	// if there is a _cgo_init, call it using the gcc ABI.
	MOVV	_cgo_init(SB), R25
	BEQ	R25, nocgo

	MOVV	R0, R7	// arg 3: not used
	MOVV	R0, R6	// arg 2: not used
	MOVV	$setg_gcc<>(SB), R5	// arg 1: setg
	MOVV	g, R4	// arg 0: G
	JAL	(R25)

nocgo:
	// update stackguard after _cgo_init
	MOVV	(g_stack+stack_lo)(g), R19
	ADDV	$const_stackGuard, R19
	MOVV	R19, g_stackguard0(g)
	MOVV	R19, g_stackguard1(g)

	// if there is a _cgo_init, call it using the gcc ABI.
	MOVW	_cgo_init(SB), R25
	BEQ	R25, nocgo
	ADDU	$-16, R29
	MOVW	R0, R7	// arg 3: not used
	MOVW	R0, R6	// arg 2: not used
	MOVW	$setg_gcc<>(SB), R5	// arg 1: setg
	MOVW	g, R4	// arg 0: G
	JAL	(R25)
	ADDU	$16, R29

nocgo:
	// update stackguard after _cgo_init
	MOVW	(g_stack+stack_lo)(g), R1
	ADD	$const_stackGuard, R1
	MOVW	R1, g_stackguard0(g)

//go:linkname add
//go:nosplit
func add(p unsafe.Pointer, x uintptr) unsafe.Pointer {
	return unsafe.Pointer(uintptr(p) + x)
}

// getg returns the pointer to the current g.
// The compiler rewrites calls to this function into instructions
// that fetch the g directly (from TLS or from the dedicated register).
func getg() *g

// mcall switches from the g to the g0 stack and invokes fn(g),
// where g is the goroutine that made the call.

	MOVD	8(R12), R2
	MOVD	(R12), R12
#endif
	MOVD	R12, CTR		// r12 = "global function entry point"
	MOVD	R13, R5			// arg 2: TLS base pointer
	MOVD	$setg_gcc<>(SB), R4 	// arg 1: setg
	MOVD	g, R3			// arg 0: G
	// C functions expect 32 (48 for AIX) bytes of space on caller
	// stack frame and a 16-byte aligned R1
	MOVD	R1, R14			// save current stack
	SUB	$cgoCalleeStackSize, R1	// reserve the callee area

	MOVD	R0, R3			// arg 3: TLS base pointer
	MOVD	$runtime·tls_g(SB), R2 	// arg 2: &tls_g
#else
	MOVD	$0, R2		        // arg 2: not used when using platform's TLS
#endif
	MOVD	$setg_gcc<>(SB), R1	// arg 1: setg
	MOVD	g, R0			// arg 0: G
	SUB	$16, RSP		// reserve 16 bytes for sp-8 where fp may be saved.
	BL	(R12)
	ADD	$16, RSP

nocgo:
	BL	runtime·save_g(SB)
	// update stackguard after _cgo_init

	CMPL	DX, $0
	JEQ	dropm
	CMPL	(DX), $0
	JNE	droppedm

dropm:
	MOVL	$runtime·dropm(SB), AX
	CALL	AX
droppedm:

	// Done!
	RET

// void setg(G*); set g. for use by needm.
TEXT runtime·setg(SB), NOSPLIT, $0-4
	MOVL	gg+0(FP), BX
#ifdef GOOS_windows
	MOVL	runtime·tls_g(SB), CX
	CMPL	BX, $0
	JNE	settls
	MOVL	$0, 0(CX)(FS)
	RET
settls:

//go:nosplit
func racerelease(addr unsafe.Pointer) {
	racereleaseg(getg(), addr)
}

//go:nosplit
func racereleaseg(gp *g, addr unsafe.Pointer) {
	if getg().raceignore != 0 || !isvalidaddr(addr) {
		return
	}
	racecall(&__tsan_release, gp.racectx, uintptr(addr), 0, 0)
}

//go:nosplit
func racereleaseacquire(addr unsafe.Pointer) {
	racereleaseacquireg(getg(), addr)
}

//go:nosplit