61 lines
1.5 KiB
Go
61 lines
1.5 KiB
Go
// 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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//go:build ignore
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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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"log"
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"os"
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"strings"
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)
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var goarches []string
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func main() {
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data, err := os.ReadFile("../../internal/syslist/syslist.go")
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if err != nil {
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log.Fatal(err)
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}
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const goarchPrefix = `var KnownArch = map[string]bool{`
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inGOARCH := false
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for _, line := range strings.Split(string(data), "\n") {
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if strings.HasPrefix(line, goarchPrefix) {
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inGOARCH = true
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} else if inGOARCH && strings.HasPrefix(line, "}") {
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break
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} else if inGOARCH {
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goarch := strings.Fields(line)[0]
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goarch = strings.TrimPrefix(goarch, `"`)
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goarch = strings.TrimSuffix(goarch, `":`)
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goarches = append(goarches, goarch)
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}
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}
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for _, target := range goarches {
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if target == "amd64p32" {
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continue
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}
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var buf bytes.Buffer
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fmt.Fprintf(&buf, "// Code generated by gengoarch.go using 'go generate'. DO NOT EDIT.\n\n")
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fmt.Fprintf(&buf, "//go:build %s\n\n", target) // must explicitly include target for bootstrapping purposes
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fmt.Fprintf(&buf, "package goarch\n\n")
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fmt.Fprintf(&buf, "const GOARCH = `%s`\n\n", target)
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for _, goarch := range goarches {
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value := 0
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if goarch == target {
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value = 1
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}
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fmt.Fprintf(&buf, "const Is%s = %d\n", strings.Title(goarch), value)
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}
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err := os.WriteFile("zgoarch_"+target+".go", buf.Bytes(), 0666)
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if err != nil {
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log.Fatal(err)
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}
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}
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}
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