}
	return EAGAIN;
}

static void
pthread_key_destructor(void* g) {
	if (x_crosscall2_ptr != NULL) {
		// fn == NULL means dropm.
		// We restore g by using the stored g, before dropm in runtime.cgocallback,
		// since the g stored in the TLS by Go might be cleared in some platforms,
		// before this destructor invoked.
		x_crosscall2_ptr(NULL, g, 0, 0);
	}

	MOVL	CX, (12+callbackArgs_args)(SP)		// address of args vector
	MOVL	$0, (12+callbackArgs_result)(SP)	// result
	LEAL	12(SP), AX	// AX = &callbackArgs{...}

	// Call cgocallback, which will call callbackWrap(frame).
	MOVL	$0, 8(SP)	// context
	MOVL	AX, 4(SP)	// frame (address of callbackArgs)
	LEAL	·callbackWrap(SB), AX
	MOVL	AX, 0(SP)	// PC of function to call
	CALL	runtime·cgocallback(SB)

	JAL	runtime·save_g(SB)
	MOVV	(g_stack+stack_hi)(g), R5
	MOVV	8(R29), R6
	SUBVU	R6, R5
	MOVV	R5, R29

	MOVW	R2, ret+16(FP)
	RET

// func cgocallback(fn, frame unsafe.Pointer, ctxt uintptr)
// See cgocall.go for more details.
TEXT ·cgocallback(SB),NOSPLIT,$24-24
	NO_LOCAL_POINTERS

	// Skip cgocallbackg, just dropm when fn is nil, and frame is the saved g.
	// It is used to dropm while thread is exiting.

	JAL	runtime·save_g(SB)
	MOVW	(g_stack+stack_hi)(g), R5
	MOVW	20(R29), R6
	SUBU	R6, R5
	MOVW	R5, R29

	MOVW	R2, ret+8(FP)
	RET

// cgocallback(fn, frame unsafe.Pointer, ctxt uintptr)
// See cgocall.go for more details.
TEXT ·cgocallback(SB),NOSPLIT,$12-12
	NO_LOCAL_POINTERS

	// Skip cgocallbackg, just dropm when fn is nil, and frame is the saved g.
	// It is used to dropm while thread is exiting.

	MOV	ZERO, ZERO	// NOP
	JMP	runtime·goexit1(SB)	// does not return
	// traceback from goexit1 must hit code range of goexit
	MOV	ZERO, ZERO	// NOP

// func cgocallback(fn, frame unsafe.Pointer, ctxt uintptr)
// See cgocall.go for more details.
TEXT ·cgocallback(SB),NOSPLIT,$24-24
	NO_LOCAL_POINTERS

	// Skip cgocallbackg, just dropm when fn is nil, and frame is the saved g.
	// It is used to dropm while thread is exiting.

	BL	runtime·save_g(SB)
	MOVD	(g_stack+stack_hi)(g), R5
	MOVD	160(R15), R6
	SUB	R6, R5
	MOVD	R5, R15

	MOVW	R2, ret+16(FP)
	RET

// cgocallback(fn, frame unsafe.Pointer, ctxt uintptr)
// See cgocall.go for more details.
TEXT ·cgocallback(SB),NOSPLIT,$24-24
	NO_LOCAL_POINTERS

	// Skip cgocallbackg, just dropm when fn is nil, and frame is the saved g.
	// It is used to dropm while thread is exiting.

	MOVW	R0, (16+callbackArgs_args)(R13)		// address of args vector
	MOVW	$0, R0
	MOVW	R0, (16+callbackArgs_result)(R13)	// result

	// Prepare for entry to Go.
	BL	runtime·load_g(SB)

	// Call cgocallback, which will call callbackWrap(frame).
	MOVW	$0, R0
	MOVW	R0, 12(R13)	// context
	MOVW	$16(R13), R1	// R1 = &callbackArgs{...}
	MOVW	R1, 8(R13)	// frame (address of callbackArgs)
	MOVW	$·callbackWrap(SB), R1

	MOVW	R2, 16(R13)	// Save old stack pointer.
	BL	(R1)
	// Restore stack pointer.
	MOVW	16(R13), R2
	MOVW	R2, R13
	MOVW	R0, ret+8(FP)
	RET

// cgocallback(fn, frame unsafe.Pointer, ctxt uintptr)
// See cgocall.go for more details.
TEXT	·cgocallback(SB),NOSPLIT,$12-12
	NO_LOCAL_POINTERS

	// Skip cgocallbackg, just dropm when fn is nil, and frame is the saved g.
	// It is used to dropm while thread is exiting.

	JAL	runtime·save_g(SB)
	MOVV	(g_stack+stack_hi)(g), R5
	MOVV	8(R3), R6
	SUBVU	R6, R5
	MOVV	R5, R3

	MOVW	R4, ret+16(FP)
	RET

// func cgocallback(fn, frame unsafe.Pointer, ctxt uintptr)
// See cgocall.go for more details.
TEXT ·cgocallback(SB),NOSPLIT,$24-24
	NO_LOCAL_POINTERS

	// Skip cgocallbackg, just dropm when fn is nil, and frame is the saved g.
	// It is used to dropm while thread is exiting.

	MOVL	BX, 0(SP)	// first argument in x86-32 ABI
	CALL	AX

	MOVL	4(SP), CX	// restore original stack pointer
	MOVL	CX, SP
	MOVL	AX, ret+8(FP)
	RET

// cgocallback(fn, frame unsafe.Pointer, ctxt uintptr)
// See cgocall.go for more details.
TEXT ·cgocallback(SB),NOSPLIT,$12-12  // Frame size must match commented places below
	NO_LOCAL_POINTERS

	// Skip cgocallbackg, just dropm when fn is nil, and frame is the saved g.