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How to use decompileOpcodes method of report Package

Best Syzkaller code snippet using report.decompileOpcodes

decompile.go

Source:decompile.go

1// Copyright 2021 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.3package report4import (5	"bufio"6	"bytes"7	"fmt"8	"os"9	"regexp"10	"strconv"11	"strings"12	"time"13	"github.com/google/syzkaller/pkg/osutil"14	"github.com/google/syzkaller/sys/targets"15)16type DecompilerFlagMask uint6417// Extra flags that control the flow of decompilation.18const (19	FlagForceArmThumbMode DecompilerFlagMask = 1 << iota20)21const objdumpCallTimeout = 10 * time.Second22type DecompiledOpcode struct {23	Offset          int24	IsBad           bool25	Instruction     string26	FullDescription string27}28// Decompiles a byte array with opcodes into human-readable descriptions.29// Target must specify the environment from which the opcodes were taken.30func DecompileOpcodes(rawOpcodes []byte, flags DecompilerFlagMask, target *targets.Target) ([]DecompiledOpcode, error) {31	args, err := objdumpBuildArgs(flags, target)32	if err != nil {33		return nil, err34	}35	outBytes, err := objdumpExecutor(rawOpcodes, args, target)36	if err != nil {37		return nil, err38	}39	list := objdumpParseOutput(outBytes)40	if len(list) == 0 && len(rawOpcodes) > 0 {41		return nil, fmt.Errorf("no instructions found while the total size is %v bytes", len(rawOpcodes))42	}43	return list, nil44}45func objdumpExecutor(rawOpcodes []byte, args []string, target *targets.Target) ([]byte, error) {46	fileName, err := osutil.TempFile("syz-opcode-decompiler")47	if err != nil {48		return nil, fmt.Errorf("failed to create temp file: %v", err)49	}50	defer os.Remove(fileName)51	err = osutil.WriteFile(fileName, rawOpcodes)52	if err != nil {53		return nil, fmt.Errorf("failed to write to temp file: %v", err)54	}55	return osutil.RunCmd(objdumpCallTimeout, "", target.Objdump, append(args, fileName)...)56}57// nolint: lll58var objdumpAsmLineRegexp = regexp.MustCompile(`\s+([a-fA-F0-9]+)\:\s+((?:[a-fA-F0-9]{2,8}\s*)*[a-fA-F0-9]{2,8})\s+(.*?)\s*$`)59func objdumpParseOutput(rawOutput []byte) []DecompiledOpcode {60	ret := []DecompiledOpcode{}61	for s := bufio.NewScanner(bytes.NewReader(rawOutput)); s.Scan(); {62		result := objdumpAsmLineRegexp.FindStringSubmatch(string(s.Bytes()))63		if result == nil {64			continue65		}66		offset, err := strconv.ParseUint(result[1], 16, 64)67		if err != nil {68			continue69		}70		const objdumpBadInstruction = "(bad)"71		ret = append(ret, DecompiledOpcode{72			Offset:          int(offset),73			IsBad:           result[3] == objdumpBadInstruction,74			Instruction:     result[3],75			FullDescription: strings.TrimRight(result[0], " \t"),76		})77	}78	return ret79}80func objdumpBuildArgs(flags DecompilerFlagMask, target *targets.Target) ([]string, error) {81	// objdump won't be able to decompile a raw binary file unless we specify the exact82	// architecture through the -m parameter.83	ret := []string{"-b", "binary", "-D"}84	switch target.Arch {85	case targets.ARM64:86		ret = append(ret, "-maarch64")87	case targets.ARM:88		ret = append(ret, "-marm")89		if flags&FlagForceArmThumbMode != 0 {90			ret = append(ret, "-M", "force-thumb")91		}92	case targets.I386:93		ret = append(ret, "-mi386")94	case targets.AMD64:95		ret = append(ret, "-mi386", "-Mx86-64")96	case targets.MIPS64LE:97		ret = append(ret, "-mmips")98	case targets.PPC64LE:99		ret = append(ret, "-mppc")100	case targets.S390x:101		ret = append(ret, "-m", "s390:64-bit")102	case targets.RiscV64:103		ret = append(ret, "-mriscv")104	default:105		return nil, fmt.Errorf("cannot build objdump args for %#v", target.Arch)106	}107	return ret, nil108}...

decompileOpcodes

Using AI Code Generation

1import (2func main() {3   m := ir.NewModule()4   foo := m.NewFunc("foo", types.I32)5   entry := foo.NewBlock("entry")6   c := constant.NewInt(types.I32, 42)7   entry.NewRet(c)8   fmt.Println(m)9}

decompileOpcodes

Using AI Code Generation

1import (2func main() {3	fset := token.NewFileSet()4	f, err := parser.ParseFile(fset, "1.go", nil, 0)5	if err != nil {6		fmt.Println(err)7	}

decompileOpcodes

Using AI Code Generation

1import (2func main() {3	m, err := asm.Parse(os.Stdin)4	if err != nil {5		panic(err)6	}7	r := ir.NewReport(m)8	fmt.Println(r.DecompileOpcodes())9}10import (11func main() {12	m, err := asm.Parse(os.Stdin)13	if err != nil {14		panic(err)15	}16	r := ir.NewReport(m)17	fmt.Println(r.Decompile())18}19import (20func main() {21	m, err := asm.Parse(os.Stdin)22	if err != nil {23		panic(err)24	}25	r := ir.NewReport(m)26	if err := r.Verify(); err != nil {27		fmt.Println(err)28	}29}30import (31func main() {32	m, err := asm.Parse(os.Stdin)33	if err != nil {34		panic(err)35	}36	r := ir.NewReport(m)37	if err := r.Verify(); err != nil {38		fmt.Println(err)39	}40}

decompileOpcodes

Using AI Code Generation

1import (2func main() {3	pwd, err := os.Getwd()4	if err != nil {5		fmt.Println(err)6	}7	files, err := ioutil.ReadDir(pwd)8	if err != nil {9		fmt.Println(err)10	}11	for _, file := range files {12		if strings.HasSuffix(file.Name(), ".go") {13			path := filepath.Join(pwd, file.Name())14			fset := token.NewFileSet()15			f, err := parser.ParseFile(fset, path, nil, parser.ParseComments)16			if err != nil {17				fmt.Println(err)18			}19			for _, comment := range f.Comments {20				text := comment.Text()21					decompileOpcodes(fset, f)22				}23			}24		}25	}26}27func decompileOpcodes(fset *token.FileSet, f *ast.File) {28	reportClass := getReportClass(f)29	for _, decl := range f.Decls {30		funcDecl, ok := decl.(*ast.FuncDecl)31		if ok {32			if funcDecl.Name.Name == "decompileOpcodes" {33				if funcDecl.Recv != nil {34					if funcDecl.Recv.List[0].Type.(*ast.StarExpr).X.(*ast.Ident

decompileOpcodes

Using AI Code Generation

1import (2func main() {3    r = report.Report{}4    r.AddOpcode("push", "0x1")5    r.AddOpcode("push", "0x2")6    r.AddOpcode("push", "0x3")7    r.AddOpcode("push", "0x4")8    r.AddOpcode("push", "0x5")9    r.AddOpcode("push", "0x6")10    r.AddOpcode("push", "0x7")11    r.AddOpcode("push", "0x8")12    r.AddOpcode("push", "0x9")13    r.AddOpcode("push", "0x10")14    r.AddOpcode("push", "0x11")15    r.AddOpcode("push", "0x12")16    r.AddOpcode("push", "0x13")17    r.AddOpcode("push", "0x14")18    r.AddOpcode("push", "0x15")19    r.AddOpcode("push", "0x16")20    r.AddOpcode("push", "0x17")21    r.AddOpcode("push", "0x18")22    r.AddOpcode("push", "0x19")23    r.AddOpcode("push", "0x20")24    r.AddOpcode("push", "0x21")25    r.AddOpcode("push", "0x22")26    r.AddOpcode("push", "0x23")27    r.AddOpcode("push", "0x24")28    r.AddOpcode("push", "0x25")29    r.AddOpcode("push", "0x26")30    r.AddOpcode("push", "0x27")31    r.AddOpcode("push", "0x28")32    r.AddOpcode("push", "0x29")33    r.AddOpcode("push", "0x30")34    r.AddOpcode("push", "0x31")35    r.AddOpcode("push", "0x32")36    r.AddOpcode("push", "0x33")37    r.AddOpcode("push", "0x34")38    r.AddOpcode("push", "0x35")39    r.AddOpcode("push", "0x36")40    r.AddOpcode("push", "

decompileOpcodes

Using AI Code Generation

1import java.io.*;2import java.util.*;3import java.util.zip.*;4import java.io.File;5import java.io.FileInputStream;6import java.io.FileOutputStream;7import java.io.IOException;8import java.io.InputStream;9import java.io.OutputStream;10import java.nio.file.Files;11import java.nio.file.Paths;12import java.util.zip.ZipEntry;13import java.util.zip.ZipInputStream;14import org.apache.commons.io.FileUtils;15import org.apache.commons.io.IOUtils;16import com.google.common.base.Charsets;17import com.google.common.io.Files;18import java.util.regex.Matcher;19import java.util.regex.Pattern;20import java.util.zip.ZipEntry;21import java.util.zip.ZipInputStream;22import org.apache.commons.io.FileUtils;23import org.apache.commons.io.IOUtils;24import com.google.common.base.Charsets;25import com.google.common.io.Files;26import java.util.regex.Matcher;27import java.util.regex.Pattern;28import java.util.zip.ZipEntry;29import java.util.zip.ZipInputStream;30import org.apache.commons.io.FileUtils;31import org.apache.commons.io.IOUtils;32import com.google.common.base.Charsets;33import com.google.common.io.Files;34import java.util

decompileOpcodes

Using AI Code Generation

1import (2func main() {3    r.Add(1, 2, 3)4    r.Add(4, 5, 6)5    fmt.Println(r.DecompileOpcodes())6}7import (8type Report struct {9}10func (r *Report) Add(a, b, c int) {11    r.opcodes = append(r.opcodes, fmt.Sprintf("add %d %d %d", a, b, c))12}13func (r *Report) DecompileOpcodes() string {14    return strings.Join(r.opcodes, "15}16import (17func TestReport(t *testing.T) {18    r.Add(1, 2, 3)19    r.Add(4, 5, 6)20    got := r.DecompileOpcodes()21    if got != want {22        t.Errorf("got %q want %q", got, want)23    }24}

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