1 // Copyright 2017 syzkaller project authors. All rights reserved. 2 // Use of this source code is governed by Apache 2 LICENSE that can be found in the LICENSE file. 3 4 package ifuzz_test 5 6 import ( 7 "encoding/hex" 8 "math/rand" 9 "testing" 10 "time" 11 12 . "github.com/google/syzkaller/pkg/ifuzz" 13 _ "github.com/google/syzkaller/pkg/ifuzz/generated" 14 ) 15 16 func TestMode(t *testing.T) { 17 all := make(map[*Insn]bool) 18 for mode := 0; mode < ModeLast; mode++ { 19 for priv := 0; priv < 2; priv++ { 20 for exec := 0; exec < 2; exec++ { 21 cfg := &Config{ 22 Mode: mode, 23 Priv: priv != 0, 24 Exec: exec != 0, 25 } 26 insns := ModeInsns(cfg) 27 t.Logf("mode=%v priv=%v exec=%v: %v instructions", mode, priv, exec, len(insns)) 28 for _, insn := range insns { 29 all[insn] = true 30 } 31 } 32 } 33 } 34 t.Logf("total: %v instructions", len(all)) 35 } 36 37 func TestDecode(t *testing.T) { 38 seed := int64(time.Now().UnixNano()) 39 t.Logf("seed=%v", seed) 40 r := rand.New(rand.NewSource(seed)) 41 42 for repeat := 0; repeat < 10; repeat++ { 43 for mode := 0; mode < ModeLast; mode++ { 44 cfg := &Config{ 45 Mode: mode, 46 Priv: true, 47 Exec: true, 48 } 49 failed := false 50 for _, insn := range ModeInsns(cfg) { 51 text0 := insn.Encode(cfg, r) 52 text := text0 53 repeat: 54 size, err := Decode(mode, text) 55 if err != nil { 56 t.Errorf("decoding %v %v failed (mode=%v): %v", insn.Name, hex.EncodeToString(text), mode, err) 57 if len(text) != len(text0) { 58 t.Errorf("whole: %v", hex.EncodeToString(text0)) 59 } 60 failed = true 61 continue 62 } 63 if XedDecode != nil { 64 xedSize, xedErr := XedDecode(mode, text) 65 if xedErr != nil { 66 t.Errorf("xed decoding %v %v failed (mode=%v): %v", insn.Name, hex.EncodeToString(text), mode, xedErr) 67 if len(text) != len(text0) { 68 t.Errorf("whole: %v", hex.EncodeToString(text0)) 69 } 70 failed = true 71 continue 72 } 73 if size != xedSize { 74 t.Errorf("decoding %v %v failed (mode=%v): decoded %v/%v, xed decoded %v/%v", 75 insn.Name, hex.EncodeToString(text), mode, size, xedSize, size, len(text)) 76 if len(text) != len(text0) { 77 t.Errorf("whole: %v", hex.EncodeToString(text0)) 78 } 79 failed = true 80 continue 81 } 82 } 83 if insn.Pseudo && size >= 0 && size < len(text) { 84 text = text[size:] 85 goto repeat 86 } 87 if size != len(text) { 88 t.Errorf("decoding %v %v failed (mode=%v): decoded %v/%v", 89 insn.Name, hex.EncodeToString(text), mode, size, len(text)) 90 if len(text) != len(text0) { 91 t.Errorf("whole: %v", hex.EncodeToString(text0)) 92 } 93 failed = true 94 } 95 } 96 if failed { 97 return 98 } 99 } 100 } 101 } 102
