46 lines
1.6 KiB
Go
46 lines
1.6 KiB
Go
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// SPDX-License-Identifier: Apache-2.0
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// SPDX-FileCopyrightText: 2022 The Ebitengine Authors
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package purego
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import (
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"syscall"
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_ "unsafe" // only for go:linkname
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"golang.org/x/sys/windows"
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)
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var syscall9XABI0 uintptr
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type syscall9Args struct {
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fn, a1, a2, a3, a4, a5, a6, a7, a8, a9 uintptr
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f1, f2, f3, f4, f5, f6, f7, f8 uintptr
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r1, r2, err uintptr
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}
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func syscall_syscall9X(fn, a1, a2, a3, a4, a5, a6, a7, a8, a9 uintptr) (r1, r2, err uintptr) {
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r1, r2, errno := syscall.Syscall9(fn, 9, a1, a2, a3, a4, a5, a6, a7, a8, a9)
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return r1, r2, uintptr(errno)
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}
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// NewCallback converts a Go function to a function pointer conforming to the stdcall calling convention.
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// This is useful when interoperating with Windows code requiring callbacks. The argument is expected to be a
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// function with one uintptr-sized result. The function must not have arguments with size larger than the
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// size of uintptr. Only a limited number of callbacks may be created in a single Go process, and any memory
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// allocated for these callbacks is never released. Between NewCallback and NewCallbackCDecl, at least 1024
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// callbacks can always be created. Although this function is similiar to the darwin version it may act
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// differently.
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func NewCallback(fn interface{}) uintptr {
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return syscall.NewCallback(fn)
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}
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//go:linkname openLibrary openLibrary
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func openLibrary(name string) (uintptr, error) {
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handle, err := windows.LoadLibrary(name)
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return uintptr(handle), err
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}
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func loadSymbol(handle uintptr, name string) (uintptr, error) {
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return windows.GetProcAddress(windows.Handle(handle), name)
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}
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