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// Copyright 2009 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
#include "textflag.h"
// Called by C code generated by cmd/cgo.
// func crosscall2(fn, a unsafe.Pointer, n int32, ctxt uintptr)
// Saves C callee-saved registers and calls cgocallback with three arguments.
// fn is the PC of a func(a unsafe.Pointer) function.
// This signature is known to SWIG, so we can't change it.
#ifndef GOOS_windows
TEXT crosscall2(SB),NOSPLIT,$0x50-0 /* keeps stack pointer 32-byte aligned */
#else
TEXT crosscall2(SB),NOSPLIT,$0x110-0 /* also need to save xmm6 - xmm15 */
#endif
MOVQ BX, 0x18(SP)
MOVQ R12, 0x28(SP)
MOVQ R13, 0x30(SP)
MOVQ R14, 0x38(SP)
MOVQ R15, 0x40(SP)
#ifdef GOOS_windows
// Win64 save RBX, RBP, RDI, RSI, RSP, R12, R13, R14, R15 and XMM6 -- XMM15.
MOVQ DI, 0x48(SP)
MOVQ SI, 0x50(SP)
MOVUPS X6, 0x60(SP)
MOVUPS X7, 0x70(SP)
MOVUPS X8, 0x80(SP)
MOVUPS X9, 0x90(SP)
MOVUPS X10, 0xa0(SP)
MOVUPS X11, 0xb0(SP)
MOVUPS X12, 0xc0(SP)
MOVUPS X13, 0xd0(SP)
MOVUPS X14, 0xe0(SP)
MOVUPS X15, 0xf0(SP)
MOVQ CX, 0x0(SP) /* fn */
MOVQ DX, 0x8(SP) /* arg */
// Skip n in R8.
MOVQ R9, 0x10(SP) /* ctxt */
CALL runtime·cgocallback(SB)
MOVQ 0x48(SP), DI
MOVQ 0x50(SP), SI
MOVUPS 0x60(SP), X6
MOVUPS 0x70(SP), X7
MOVUPS 0x80(SP), X8
MOVUPS 0x90(SP), X9
MOVUPS 0xa0(SP), X10
MOVUPS 0xb0(SP), X11
MOVUPS 0xc0(SP), X12
MOVUPS 0xd0(SP), X13
MOVUPS 0xe0(SP), X14
MOVUPS 0xf0(SP), X15
#else
MOVQ DI, 0x0(SP) /* fn */
MOVQ SI, 0x8(SP) /* arg */
// Skip n in DX.
MOVQ CX, 0x10(SP) /* ctxt */
CALL runtime·cgocallback(SB)
#endif
MOVQ 0x18(SP), BX
MOVQ 0x28(SP), R12
MOVQ 0x30(SP), R13
MOVQ 0x38(SP), R14
MOVQ 0x40(SP), R15
RET
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