How to use elfReadTextRanges method of backend Package

Best Syzkaller code snippet using backend.elfReadTextRanges

elf.go

Source:elf.go

...17		&containerFns{18			readSymbols:           elfReadSymbols,19			readTextData:          elfReadTextData,20			readModuleCoverPoints: elfReadModuleCoverPoints,21			readTextRanges:        elfReadTextRanges,22		},23	)24}25func elfReadSymbols(module *Module, info *symbolInfo) ([]*Symbol, error) {26	file, err := elf.Open(module.Path)27	if err != nil {28		return nil, err29	}30	text := file.Section(".text")31	if text == nil {32		return nil, fmt.Errorf("no .text section in the object file")33	}34	allSymbols, err := file.Symbols()35	if err != nil {36		return nil, fmt.Errorf("failed to read ELF symbols: %v", err)37	}38	if module.Name == "" {39		info.textAddr = text.Addr40	}41	var symbols []*Symbol42	for i, symb := range allSymbols {43		if symb.Info&0xf != uint8(elf.STT_FUNC) && symb.Info&0xf != uint8(elf.STT_NOTYPE) {44			// Only save STT_FUNC, STT_NONE otherwise some symb range inside another symb range.45			continue46		}47		text := symb.Value >= text.Addr && symb.Value+symb.Size <= text.Addr+text.Size48		if text {49			start := symb.Value + module.Addr50			symbols = append(symbols, &Symbol{51				Module: module,52				ObjectUnit: ObjectUnit{53					Name: symb.Name,54				},55				Start: start,56				End:   start + symb.Size,57			})58		}59		if strings.HasPrefix(symb.Name, "__sanitizer_cov_trace_") {60			if symb.Name == "__sanitizer_cov_trace_pc" {61				info.tracePCIdx[i] = true62				if text {63					info.tracePC = symb.Value64				}65			} else {66				info.traceCmpIdx[i] = true67				if text {68					info.traceCmp[symb.Value] = true69				}70			}71		}72	}73	return symbols, nil74}75func elfReadTextRanges(module *Module) ([]pcRange, []*CompileUnit, error) {76	file, err := elf.Open(module.Path)77	if err != nil {78		return nil, nil, err79	}80	text := file.Section(".text")81	if text == nil {82		return nil, nil, fmt.Errorf("no .text section in the object file")83	}84	kaslr := file.Section(".rela.text") != nil85	debugInfo, err := file.DWARF()86	if err != nil {87		if module.Name != "" {88			log.Logf(0, "ignoring module %v without DEBUG_INFO", module.Name)89			return nil, nil, nil...

elfReadTextRanges

Using AI Code Generation

1import (2func main() {3        backend := native.New(proc.DwarfEndian, nil)4        pid := os.Getpid()5        process, err := backend.Attach(pid, 0)6        if err != nil {7                fmt.Println(err)8        }9        defer process.Detach(false)10        ranges, err := process.(*native.Process).ElfReadTextRanges(exe)11        if err != nil {12                fmt.Println(err)13        }14        fmt.Println(ranges)15}

elfReadTextRanges

Using AI Code Generation

1import (2func main() {3    if len(os.Args) < 2 {4        fmt.Printf("Usage: %s <elf file>5        os.Exit(1)6    }7    backend := stackparse.NewBackend()8    ranges, err := backend.ElfReadTextRanges(elfFile)9    if err != nil {10        fmt.Printf("Error reading text ranges from %s: %v11        os.Exit(1)12    }13    for _, r := range ranges {14        fmt.Printf("0x%x-0x%x15    }16}

elfReadTextRanges

Using AI Code Generation

1import (2func main() {3    if len(os.Args) == 2 {4    } else {5        fmt.Println("Usage: 2.go <filename>")6        os.Exit(1)7    }8    ranges, err := elfReadTextRanges(filename)9    if err != nil {10        fmt.Println("Error while reading text ranges:", err)11        os.Exit(1)12    }13    for _, r := range ranges {14        name := demangle.Demangle(r.Name, demangle.NoFlags)15        if name == "" {16        }17        if strings.HasPrefix(name, "main.") {18            fmt.Printf("%#x-%#x %s19        }20    }21}

elfReadTextRanges

Using AI Code Generation

1import (2func main() {3    if len(os.Args) < 2 {4        fmt.Println("Usage: 2.go <file>")5        os.Exit(1)6    }7    f, err := os.Open(os.Args[1])8    if err != nil {9        fmt.Println(err)10        os.Exit(1)11    }12    defer f.Close()13    backend := new(Backend)14    backend.Init()15    ranges, err := backend.elfReadTextRanges(f)16    if err != nil {17        fmt.Println(err)18        os.Exit(1)19    }20    for _, r := range ranges {21        fmt.Printf("0x%016x - 0x%016x\n", r.Start, r.End)22    }23}24import (25type Backend struct {26}27func (b *Backend) Init() {28}29func (b *Backend) elfReadTextRanges(f *os.File) ([]Range, error) {30    b.elfFile, err := elf.NewFile(f)31    if err != nil {32    }33    for _, section := range b.elfFile.Sections {34        if section.Type == elf.SHT_PROGBITS && section.Flags&elf.SHF_EXECINSTR != 0 {35            if ranges == nil {36                ranges = make([]Range, 0)37            }38            ranges = append(ranges, Range{Start: section.Addr, End: section.Addr + section.Size})39        }40    }41}42type Range struct {43}44struct Range {45    uint64_t start;46    uint64_t end;47};48struct Backend {49    void *elfFile;50};51void backend_init(struct Backend *b);52int backend_elf_read_text_ranges(struct Backend *b,

elfReadTextRanges

Using AI Code Generation

1import (2type Backend struct {3}4func (b *Backend) elfReadTextRanges(path string) ([]TextRange, error) {5	file, err := elf.Open(path)6	if err != nil {7	}8	defer file.Close()9	phdr, err := file.ProgramHeaders()10	if err != nil {11	}12	for _, p := range phdr {13		if p.Type == elf.PT_LOAD && p.Flags&elf.PF_X != 0 {14		}15	}16	if text == nil {17		return nil, fmt.Errorf("could not find text section")18	}19	_, err = io.CopyN(&buf, file, int64(text.Filesz))20	if err != nil {21	}22	addr := uintptr(text.Vaddr)23	end := uintptr(text.Vaddr + text.Memsz)24	for addr < end {25		naddr := nextInstructionBoundary(addr, end)26		b := buf.Bytes()[addr-text.Vaddr : naddr-text.Vaddr]27		tr := TextRange{28			Len:  uintptr(len(b)),29		}30		res = append(res, tr)31	}32}33func nextInstructionBoundary(addr, end uintptr) uintptr {34	instr := *(*uint32)(unsafe.Pointer(addr))35	switch instr >> 26 {36		return (addr &^ 0x03FFFFFF) | (uintptr(instr&0x03FFFFFF) << 2)

elfReadTextRanges

Using AI Code Generation

1import (2func main() {3	elfBackend := elf.NewBackend()4	textRanges, err := elfBackend.ElfReadTextRanges(os.Args[1])5	if err != nil {6		fmt.Println(err)7	}8	for _, textRange := range textRanges {9		fmt.Printf("%x %x %x %x %x10	}11}12import (13func main() {14	elfBackend := elf.NewBackend()15	textRanges, err := elfBackend.ElfReadTextRanges(os.Args[1])16	if err != nil {17		fmt.Println(err)18	}19	for _, textRange := range textRanges {20		fmt.Printf("%x %x %x %x %x21	}22}

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