subsonic-tui/vendor/github.com/ebitengine/purego/internal/fakecgo/asm_amd64.s
Sagi Dayan 48661005be
initial commit
Signed-off-by: Sagi Dayan <sagidayan@gmail.com>
2024-09-01 16:30:56 +03:00

39 lines
926 B
ArmAsm

// 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"
#include "abi_amd64.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.
TEXT crosscall2(SB), NOSPLIT, $0-0
PUSH_REGS_HOST_TO_ABI0()
// Make room for arguments to cgocallback.
ADJSP $0x18
#ifndef GOOS_windows
MOVQ DI, 0x0(SP) // fn
MOVQ SI, 0x8(SP) // arg
// Skip n in DX.
MOVQ CX, 0x10(SP) // ctxt
#else
MOVQ CX, 0x0(SP) // fn
MOVQ DX, 0x8(SP) // arg
// Skip n in R8.
MOVQ R9, 0x10(SP) // ctxt
#endif
CALL runtime·cgocallback(SB)
ADJSP $-0x18
POP_REGS_HOST_TO_ABI0()
RET