1 // Copyright 2014 The Go Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style 3 // license that can be found in the LICENSE file. 4 5 package x86asm 6 7 import ( 8 "encoding/hex" 9 "io/ioutil" 10 "strconv" 11 "strings" 12 "testing" 13 ) 14 15 func TestDecode(t *testing.T) { 16 data, err := ioutil.ReadFile("testdata/decode.txt") 17 if err != nil { 18 t.Fatal(err) 19 } 20 all := string(data) 21 for strings.Contains(all, "\t\t") { 22 all = strings.Replace(all, "\t\t", "\t", -1) 23 } 24 for _, line := range strings.Split(all, "\n") { 25 line = strings.TrimSpace(line) 26 if line == "" || strings.HasPrefix(line, "#") { 27 continue 28 } 29 f := strings.SplitN(line, "\t", 4) 30 i := strings.Index(f[0], "|") 31 if i < 0 { 32 t.Errorf("parsing %q: missing | separator", f[0]) 33 continue 34 } 35 if i%2 != 0 { 36 t.Errorf("parsing %q: misaligned | separator", f[0]) 37 } 38 size := i / 2 39 code, err := hex.DecodeString(f[0][:i] + f[0][i+1:]) 40 if err != nil { 41 t.Errorf("parsing %q: %v", f[0], err) 42 continue 43 } 44 mode, err := strconv.Atoi(f[1]) 45 if err != nil { 46 t.Errorf("invalid mode %q in: %s", f[1], line) 47 continue 48 } 49 syntax, asm := f[2], f[3] 50 inst, err := Decode(code, mode) 51 var out string 52 if err != nil { 53 out = "error: " + err.Error() 54 } else { 55 switch syntax { 56 case "gnu": 57 out = GNUSyntax(inst, 0, nil) 58 case "intel": 59 out = IntelSyntax(inst, 0, nil) 60 case "plan9": // [sic] 61 out = GoSyntax(inst, 0, nil) 62 default: 63 t.Errorf("unknown syntax %q", syntax) 64 continue 65 } 66 } 67 if out != asm || inst.Len != size { 68 t.Errorf("Decode(%s) [%s] = %s, %d, want %s, %d", f[0], syntax, out, inst.Len, asm, size) 69 } 70 } 71 } 72
