// Copyright 2017 syzkaller project authors. All rights reserved.
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// Use of this source code is governed by Apache 2 LICENSE that can be found in the LICENSE file.
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package ifuzz_test
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import (
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"encoding/hex"
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"math/rand"
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"testing"
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"time"
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. "github.com/google/syzkaller/pkg/ifuzz"
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_ "github.com/google/syzkaller/pkg/ifuzz/generated"
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)
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func TestMode(t *testing.T) {
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all := make(map[*Insn]bool)
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for mode := 0; mode < ModeLast; mode++ {
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for priv := 0; priv < 2; priv++ {
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for exec := 0; exec < 2; exec++ {
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cfg := &Config{
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Mode: mode,
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Priv: priv != 0,
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Exec: exec != 0,
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}
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insns := ModeInsns(cfg)
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t.Logf("mode=%v priv=%v exec=%v: %v instructions", mode, priv, exec, len(insns))
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for _, insn := range insns {
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all[insn] = true
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}
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}
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}
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}
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t.Logf("total: %v instructions", len(all))
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}
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func TestDecode(t *testing.T) {
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seed := int64(time.Now().UnixNano())
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t.Logf("seed=%v", seed)
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r := rand.New(rand.NewSource(seed))
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for repeat := 0; repeat < 10; repeat++ {
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for mode := 0; mode < ModeLast; mode++ {
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cfg := &Config{
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Mode: mode,
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Priv: true,
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Exec: true,
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}
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failed := false
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for _, insn := range ModeInsns(cfg) {
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text0 := insn.Encode(cfg, r)
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text := text0
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repeat:
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size, err := Decode(mode, text)
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if err != nil {
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t.Errorf("decoding %v %v failed (mode=%v): %v", insn.Name, hex.EncodeToString(text), mode, err)
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if len(text) != len(text0) {
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t.Errorf("whole: %v", hex.EncodeToString(text0))
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}
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failed = true
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continue
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}
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if XedDecode != nil {
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xedSize, xedErr := XedDecode(mode, text)
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if xedErr != nil {
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t.Errorf("xed decoding %v %v failed (mode=%v): %v", insn.Name, hex.EncodeToString(text), mode, xedErr)
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if len(text) != len(text0) {
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t.Errorf("whole: %v", hex.EncodeToString(text0))
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}
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failed = true
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continue
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}
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if size != xedSize {
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t.Errorf("decoding %v %v failed (mode=%v): decoded %v/%v, xed decoded %v/%v",
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insn.Name, hex.EncodeToString(text), mode, size, xedSize, size, len(text))
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if len(text) != len(text0) {
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t.Errorf("whole: %v", hex.EncodeToString(text0))
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}
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failed = true
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continue
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}
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}
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if insn.Pseudo && size >= 0 && size < len(text) {
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text = text[size:]
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goto repeat
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}
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if size != len(text) {
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t.Errorf("decoding %v %v failed (mode=%v): decoded %v/%v",
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insn.Name, hex.EncodeToString(text), mode, size, len(text))
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if len(text) != len(text0) {
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t.Errorf("whole: %v", hex.EncodeToString(text0))
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}
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failed = true
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}
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}
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if failed {
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return
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}
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}
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}
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}
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