mirror of
https://github.com/golang/go
synced 2024-11-13 19:50:21 -07:00
44 lines
1.1 KiB
Go
44 lines
1.1 KiB
Go
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// Copyright 2014 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// +build ignore
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// Generate Windows callback assembly file.
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package main
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import (
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"bytes"
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"fmt"
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"io/ioutil"
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"os"
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)
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const maxCallback = 2000
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func main() {
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var buf bytes.Buffer
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buf.WriteString(`// generated by wincallback.go; run go generate
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// runtime·callbackasm is called by external code to
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// execute Go implemented callback function. It is not
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// called from the start, instead runtime·compilecallback
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// always returns address into runtime·callbackasm offset
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// appropriately so different callbacks start with different
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// CALL instruction in runtime·callbackasm. This determines
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// which Go callback function is executed later on.
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TEXT runtime·callbackasm(SB),7,$0
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`)
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for i := 0; i < maxCallback; i++ {
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buf.WriteString("\tCALL\truntime·callbackasm1(SB)\n")
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}
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err := ioutil.WriteFile("zcallback_windows.s", buf.Bytes(), 0666)
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if err != nil {
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fmt.Fprintf(os.Stderr, "wincallback: %s\n", err)
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os.Exit(2)
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}
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}
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