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Syzkaller
backend
machoReadModuleCoverPoints

How to use machoReadModuleCoverPoints method of backend Package

Best Syzkaller code snippet using backend.machoReadModuleCoverPoints

mach-o.go

Source:mach-o.go

...15	return makeDWARF(target, objDir, srcDir, buildDir, moduleObj, hostModules,16		&containerFns{17			readSymbols:           machoReadSymbols,18			readTextData:          machoReadTextData,19			readModuleCoverPoints: machoReadModuleCoverPoints,20			readTextRanges:        machoReadTextRanges,21		},22	)23}24func machoReadSymbols(module *Module, info *symbolInfo) ([]*Symbol, error) {25	file, err := macho.Open(module.Path)26	if err != nil {27		return nil, err28	}29	text := file.Section("__text")30	if text == nil {31		return nil, fmt.Errorf("no __text section in the object file")32	}33	if file.Symtab == nil {34		return nil, fmt.Errorf("failed to read Mach-O symbols")35	}36	info.textAddr = text.Addr37	// We don't get symbol lengths or symbol ends in Mach-O symbols. So we38	// guesstimate them by taking the next symbols beginning -1. That only39	// works after we have sorted them.40	sort.Slice(file.Symtab.Syms, func(i, j int) bool {41		return file.Symtab.Syms[i].Value < file.Symtab.Syms[j].Value42	})43	var symbols []*Symbol44	for i, symb := range file.Symtab.Syms {45		// Mach-Os doesn't contain the Symbol size like in ELF46		symbEnd := text.Addr + text.Size47		if i < len(file.Symtab.Syms)-1 {48			symbEnd = file.Symtab.Syms[i+1].Value49		}50		text := symb.Value >= text.Addr && symbEnd <= text.Addr+text.Size51		if text {52			symbStart := symb.Value + module.Addr53			symbols = append(symbols, &Symbol{54				Module: module,55				ObjectUnit: ObjectUnit{56					Name: symb.Name,57				},58				Start: symbStart,59				End:   symbEnd,60			})61		}62		if strings.HasPrefix(symb.Name, "___sanitizer_cov_trace_") {63			if symb.Name == "___sanitizer_cov_trace_pc_guard" {64				info.tracePCIdx[i] = true65				if text {66					info.tracePC = symb.Value67				}68			} else {69				info.traceCmpIdx[i] = true70				if text {71					info.traceCmp[symb.Value] = true72				}73			}74		}75	}76	return symbols, nil77}78func machoReadTextRanges(module *Module) ([]pcRange, []*CompileUnit, error) {79	dir, kernel := filepath.Split(module.Path)80	dSYMPath := filepath.Join(dir, fmt.Sprintf(81		"%[1]s.dSYM/Contents/Resources/DWARF/%[1]s", kernel))82	dSYM, err := macho.Open(dSYMPath)83	if err != nil {84		return nil, nil, err85	}86	debugInfo, err := dSYM.DWARF()87	if err != nil {88		return nil, nil, fmt.Errorf("failed to parse DWARF: %v", err)89	}90	return readTextRanges(debugInfo, module, nil)91}92func machoReadTextData(module *Module) ([]byte, error) {93	file, err := macho.Open(module.Path)94	if err != nil {95		return nil, err96	}97	text := file.Section("__text")98	if text == nil {99		return nil, fmt.Errorf("no __text section in the object file")100	}101	return text.Data()102}103func machoReadModuleCoverPoints(target *targets.Target, module *Module, info *symbolInfo) ([2][]uint64, error) {104	// TODO: Linux/ELF supports module symbols. We should probably also do that105	// for XNU/Mach-O. To maximize code re-use we already have a lot of the106	// plumbing for module support. I think we mainly miss an equivalent to107	// discoverModules and this function at the moment.108	return [2][]uint64{}, fmt.Errorf("machoReadModuleCoverPoints not implemented")109}...

machoReadModuleCoverPoints

Using AI Code Generation

1import (2func main() {3	backend, err = syscall.LoadLibrary("C:\\Program Files\\Mentor Graphics\\Mentor ModelSim-Altera Edition 10.6a\\win32aloem\\vco.dll")4	if err != nil {5		fmt.Println("Failed to load backend")6		os.Exit(1)7	}8	module, err = syscall.LoadLibrary(modulePath)9	if err != nil {10		fmt.Println("Failed to load module")11		os.Exit(1)12	}13	coverpoints, err = machoReadModuleCoverPoints(backend, modulePath)14	if err != nil {15		fmt.Println("Failed to read module coverpoints")16		os.Exit(1)17	}18	fmt.Println("coverpoints: ", coverpoints)19	covergroups, err = machoReadModuleCoverGroups(backend, modulePath)20	if err != nil {21		fmt.Println("Failed to read module covergroups")22		os.Exit(1)23	}24	fmt.Println("covergroups: ", covergroups)25	crosses, err = machoReadModuleCrosses(backend, modulePath)26	if err != nil {27		fmt.Println("Failed to read module crosses")28		os.Exit(1)29	}30	fmt.Println("crosses: ", crosses)31}32func machoReadModuleCoverPoints(backend syscall.Handle, modulePath string) ([]syscall.Handle, error) {

machoReadModuleCoverPoints

Using AI Code Generation

1import (2func main() {3	llvmcov.InitLLVM()4	llvmcov.InitLLVMCoverage()5	llvmcov.InitLLVMProfData()6	flag.Parse()7	profileData, err := llvmcov.ReadProfileData(profilePath)8	if err != nil {9		fmt.Printf("Error reading profile data: %s10		os.Exit(1)11	}12	coverPoints, err := llvmcov.MachoReadModuleCoverPoints(modulePath, profileData)13	if err != nil {14		fmt.Printf("Error reading module cover points: %s15		os.Exit(1)16	}17	for _, cp := range coverPoints {18		fmt.Printf("File: %s19		for _, funcCP := range cp.Functions {20			fmt.Printf("\tFunction: %s21			for _, regionCP := range funcCP.Regions {22				fmt.Printf("\t\tRegion: %d23				for _, lineCP := range regionCP.Lines {24					fmt.Printf("\t\t\tLine: %d25					for _, counter := range lineCP.Counters {26						fmt.Printf("\t\t\t\tCounter: %d

machoReadModuleCoverPoints

Using AI Code Generation

1import (2func main() {3	f, err := os.Open("test")4	if err != nil {5		fmt.Println("Error in opening file")6	}7	m, err := macho.NewFile(f)8	if err != nil {9		fmt.Println("Error in reading file")10	}11	coverPoints, err := m.CoverPoints()12	if err != nil {13		fmt.Println("Error in getting cover points")14	}15	fmt.Println("Cover points are:")16	for i := 0; i < len(coverPoints); i++ {17		fmt.Println(coverPoints[i])18	}19}20import (21func main() {22	f, err := os.Open("test")23	if err != nil {24		fmt.Println("Error in opening file")25	}26	m, err := macho.NewFile(f)27	if err != nil {28		fmt.Println("Error in reading file")29	}30	coverFunctions, err := m.CoverFunctions()31	if err != nil {32		fmt.Println("Error in getting cover functions")33	}34	fmt.Println("Cover functions are:")35	for i := 0; i < len(coverFunctions); i++ {36		fmt.Println(coverFunctions[i])37	}38}39import (40func main() {41	f, err := os.Open("test")42	if err != nil {43		fmt.Println("Error in opening file")44	}45	m, err := macho.NewFile(f)46	if err != nil {47		fmt.Println("Error in reading file")48	}

machoReadModuleCoverPoints

Using AI Code Generation

1import (2func machoReadModuleCoverPoints(module uintptr) uintptr {3	mod := (*Module)(unsafe.Pointer(module))4	cp := mod.CoverPoints()5	return reflect.ValueOf(cp).Pointer()6}7func machoReadModuleCoverBlocks(module uintptr) uintptr {8	mod := (*Module)(unsafe.Pointer(module))9	cp := mod.CoverBlocks()10	return reflect.ValueOf(cp).Pointer()11}12func main() {13	fmt.Println("Hello, playground")14}15import (16type CoverPoint struct {17}18type CoverRegion struct {19}20type CoverBlock struct {21}22type Module struct {23}24func (m *Module) CoverPoints() []CoverPoint {25	fmt.Println("CoverPoints")26	return []CoverPoint{27		{28			Regions: []CoverRegion{29				{30				},31			},32		},33	}34}35func (m *Module) CoverBlocks() []CoverBlock {36	fmt.Println("CoverBlocks")37	return []CoverBlock{38		{39			Regions: []CoverRegion{40				{41				},42			},43		},44	}45}46func main() {47	machoReadModuleCoverPointsAddr := reflect.ValueOf(machoReadModuleCoverPoints).Pointer()48	machoReadModuleCoverPointsFunc := unsafe.Pointer(machoReadModuleCoverPointsAddr)49	machoReadModuleCoverBlocksAddr := reflect.ValueOf(machoReadModuleCoverBlocks).Pointer

machoReadModuleCoverPoints

Using AI Code Generation

1import (2func main() {3    file, err := os.OpenFile("test.txt", os.O_CREATE|os.O_APPEND|os.O_WRONLY, 0644)4    if err != nil {5        panic(err)6    }7    defer file.Close()8    scanner := bufio.NewScanner(os.Stdin)9    for scanner.Scan() {10        text := scanner.Text()11        if text == "exit" {12        }13        _, err := file.WriteString(text + "14        if err != nil {15            panic(err)16        }17    }18    if err := scanner.Err(); err != nil {19        panic(err)20    }21}22import (23func main() {24    file, err := os.OpenFile("test.txt", os.O_RDONLY, 0644)25    if err != nil {26        panic(err)27    }28    defer file.Close()29    scanner := bufio.NewScanner(file)30    for scanner.Scan() {31        fmt.Println(scanner.Text())32    }33    if err := scanner.Err(); err != nil {34        panic(err)35    }36}37import (38func main() {39    file, err := os.OpenFile("test.txt", os.O_CREATE|os.O_APPEND|os.O_WRONLY, 0644)40    if err != nil {41        panic(err)42    }43    defer file.Close()44    scanner := bufio.NewScanner(os.Stdin)45    for scanner.Scan() {46        text := scanner.Text()47        if text == "exit" {48        }

machoReadModuleCoverPoints

Using AI Code Generation

1import (2func main() {3	b := backend.Backend{}4	coverPoints, err := b.machoReadModuleCoverPoints("module.o")5	if err != nil {6		fmt.Println("Error:", err)7	}8	fmt.Println(coverPoints)9}10import (11func main() {12	b := backend.Backend{}13	coverPoints, err := b.machoReadModuleCoverPoints("module.o")14	if err != nil {15		fmt.Println("Error:", err)16	}17	fmt.Println(coverPoints)18}19import (20func main() {21	b := backend.Backend{}22	coverPoints, err := b.machoReadModuleCoverPoints("module.o")23	if err != nil {24		fmt.Println("Error:", err)25	}26	fmt.Println(coverPoints)27}28import (29func main() {30	b := backend.Backend{}31	coverPoints, err := b.machoReadModuleCoverPoints("module.o")32	if err != nil {33		fmt.Println("Error:", err)34	}35	fmt.Println(coverPoints)36}

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