34ac353c14
Commit 759be3dad9 bumped our Go
requirement to 1.18 which allows us to drop support for old-style
`+build` tags. This change runs `go fix ./...` to remove them, and
updates some remaining code generators that produced `+build` lines.
89 lines
1.7 KiB
Go
89 lines
1.7 KiB
Go
//go:build ignore
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package main
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import (
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"bytes"
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"flag"
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"fmt"
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"io"
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"log"
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"math/rand"
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"os"
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"path/filepath"
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"runtime"
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"github.com/mmcloughlin/avo/attr"
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)
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var (
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output = flag.String("output", "", "path to output file (default stdout)")
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seed = flag.Int64("seed", 0, "random seed")
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num = flag.Int("num", 32, "number of attributes to generate")
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)
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func GenerateAttributes(n int) []attr.Attribute {
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as := make([]attr.Attribute, 0, n)
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// Include each bitlevel.
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for i := 0; i < 16 && i < n; i++ {
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a := attr.Attribute(1 << uint(i))
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as = append(as, a)
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}
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// Add randomly generated attributes.
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for len(as) < n {
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a := attr.Attribute(rand.Uint32())
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as = append(as, a)
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}
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return as
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}
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func PrintAttributesTest(w io.Writer, as []attr.Attribute) {
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_, self, _, _ := runtime.Caller(0)
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fmt.Fprintf(w, "// Code generated by %s. DO NOT EDIT.\n\n", filepath.Base(self))
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fmt.Fprintf(w, "#include \"textflag.h\"\n\n")
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fmt.Fprintf(w, "TEXT ·attrtest(SB), $0-1\n")
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fmt.Fprintf(w, "\tMOVB $0, ret+0(FP)\n")
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for i, a := range as {
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fmt.Fprintf(w, "\tMOVW $(%d), R8\n", a)
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fmt.Fprintf(w, "\tMOVW $(%s), R9\n", a.Asm())
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fmt.Fprintf(w, "\tCMPW R8, R9\n")
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cont := fmt.Sprintf("cont%d", i)
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fmt.Fprintf(w, "\tJE %s\n", cont)
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fmt.Fprintf(w, "\tRET\n")
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fmt.Fprintf(w, "\n%s:\n", cont)
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}
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fmt.Fprintf(w, "\tMOVB $1, ret+0(FP)\n")
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fmt.Fprintf(w, "\tRET\n")
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}
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func main() {
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flag.Parse()
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w := os.Stdout
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if *output != "" {
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f, err := os.Create(*output)
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if err != nil {
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log.Fatal(err)
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}
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defer f.Close()
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w = f
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}
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rand.Seed(*seed)
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as := GenerateAttributes(*num)
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buf := bytes.NewBuffer(nil)
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PrintAttributesTest(buf, as)
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if _, err := w.Write(buf.Bytes()); err != nil {
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log.Fatal(err)
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}
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}
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