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// Copyright 2024 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.
package riscv64asm
import (
"bufio"
"encoding/hex"
"os"
"path/filepath"
"strings"
"testing"
)
func testDecode(t *testing.T, syntax string) {
input := filepath.Join("testdata", syntax+"cases.txt")
f, err := os.Open(input)
if err != nil {
t.Fatal(err)
}
defer f.Close()
scanner := bufio.NewScanner(f)
for scanner.Scan() {
line := strings.TrimSpace(scanner.Text())
if line == "" || strings.HasPrefix(line, "#") {
continue
}
f := strings.SplitN(line, "\t", 2)
i := strings.Index(f[0], "|")
if i < 0 {
t.Errorf("parsing %q: missing | separator", f[0])
continue
}
if i%2 != 0 {
t.Errorf("parsing %q: misaligned | separator", f[0])
}
code, err := hex.DecodeString(f[0][:i] + f[0][i+1:])
if err != nil {
t.Errorf("parsing %q: %v", f[0], err)
continue
}
asm0 := strings.Replace(f[1], " ", " ", -1)
asm := strings.TrimSpace(asm0)
inst, decodeErr := Decode(code)
if decodeErr != nil && decodeErr != errUnknown {
if asm == "illegalins" && decodeErr == errShort {
continue
}
// Some rarely used system instructions are not supported
// Following logicals will filter such unknown instructions
t.Errorf("parsing %x: %s", code, decodeErr)
continue
}
var out string
switch syntax {
case "gnu":
out = GNUSyntax(inst)
case "plan9":
out = GoSyntax(inst, 0, nil, nil)
default:
t.Errorf("unknown syntax %q", syntax)
continue
}
if asm != out {
t.Errorf("Decode(%s) [%s] = %s want %s", f[0], syntax, out, asm)
}
}
}
func TestDecodeGNUSyntax(t *testing.T) {
testDecode(t, "gnu")
}
func TestDecodeGoSyntax(t *testing.T) {
testDecode(t, "plan9")
}
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