How to use PreviousInstructionPC method of backend Package

Best Syzkaller code snippet using backend.PreviousInstructionPC

pc.go

Source:pc.go

...7)8func RestorePC(pc, base uint32) uint64 {9	return uint64(base)<<32 + uint64(pc)10}11func PreviousInstructionPC(target *targets.Target, pc uint64) uint64 {12	offset := instructionLen(target.Arch)13	pc -= offset14	// THUMB instructions are 2 or 4 bytes with low bit set.15	// ARM instructions are always 4 bytes.16	if target.Arch == targets.ARM {17		return pc & ^uint64(1)18	}19	return pc20}21func NextInstructionPC(target *targets.Target, pc uint64) uint64 {22	offset := instructionLen(target.Arch)23	pc += offset24	// THUMB instructions are 2 or 4 bytes with low bit set.25	// ARM instructions are always 4 bytes....

PreviousInstructionPC

Using AI Code Generation

1import (2func main() {3    client := connectDelve()4    pc, err := client.PrevInstructionPC(1, 0x0000000000000e1f)5    if err != nil {6        log.Fatal(err)7    }8    fmt.Println(pc)9}10func connectDelve() service.Client {11    client, err := rpc2.Dial("

PreviousInstructionPC

Using AI Code Generation

1import (2func main() {3	pc, file, line, ok := runtime.Caller(0)4	fmt.Println(pc, file, line, ok)5	pc, file, line, ok = runtime.Caller(1)6	fmt.Println(pc, file, line, ok)7	pc, file, line, ok = runtime.Caller(2)8	fmt.Println(pc, file, line, ok)9}

PreviousInstructionPC

Using AI Code Generation

1import (2func main() {3	fmt.Println("Hello World")4	backend := native.New(proc.DwarfEndian, 64)5	target, err := proc.New(backend, proc.NewConfig(), nil)6	if err != nil {7		panic(err)8	}9	err = target.Attach(1)10	if err != nil {11		panic(err)12	}13	t, err := target.Thread(1)14	if err != nil {15		panic(err)16	}17	loc, err := t.Location()18	if err != nil {19		panic(err)20	}21	fmt.Println("Current location:", loc)22	pc, err := t.PC()23	if err != nil {24		panic(err)25	}26	pipc, err := backend.PreviousInstructionPC(pc)27	if err != nil {28		panic(err)29	}30	fmt.Printf("Previous instruction PC: %#x31	err = backend.SetPC(t, pipc)32	if err != nil {33		panic(err)34	}35	loc, err = t.Location()36	if err != nil {37		panic(err)38	}39	fmt.Println("Current location:", loc)40}41Current location: main.main (/home/akshay/Downloads/2.go:18) [0x55e8f3a4a6c0]

PreviousInstructionPC

Using AI Code Generation

1import (2func main() {3	bin, err := gosym.NewFile("1.exe")4	if err != nil {5		log.Fatal(err)6	}7	pc, err := bin.PCToLine(0x4005b5)8	if err != nil {9		log.Fatal(err)10	}11	fmt.Println("PC of current instruction: ", pc)12	prevpc := bin.PreviousInstructionPC(pc.PC)13	fmt.Println("PC of previous instruction: ", prevpc)14}15PC of current instruction:  {0x4005b5 1.go 15 0}

PreviousInstructionPC

Using AI Code Generation

1import (2func main() {3	file, err := elf.Open("test")4	if err != nil {5		log.Fatal(err)6	}7	defer file.Close()8	f, err := file.Symbols()9	if err != nil {10		log.Fatal(err)11	}12	fmt.Println("Function address:", f[0].Value)13	pic := file.PreviousInstructionPC(pc)14	fmt.Println("Previous instruction address:", pic)15}

PreviousInstructionPC

Using AI Code Generation

1import (2func main() {3    fmt.Println("Hello World!")4    fmt.Println("Previous Instruction PC:", runtime.Callers(0, nil))5    fmt.Println("Previous Instruction PC:", runtime.Callers(1, nil))6    fmt.Println("Previous Instruction PC:", runtime.Callers(2, nil))7    fmt.Println("Previous Instruction PC:", runtime.Callers(3, nil))8}

PreviousInstructionPC

Using AI Code Generation

1import (2func main() {3	backend := runtime.NewBackend()4	frame := backend.NewFrame()5	frame2 := backend.NewFrame()6	fn := backend.NewFunction("test", 0, 0, 0)7	frame.AddFunction(fn)8	frame2.AddFunction(fn)9	backend.AddFrame(frame)10	backend.AddFrame(frame2)11	loc := backend.NewLocation("test", 0, 0, 0)12	backend.AddLocation(loc)13	loc2 := backend.NewLocation("test", 0, 0, 0)14	backend.AddLocation(loc2)15	loc3 := backend.NewLocation("test", 0, 0, 0)16	backend.AddLocation(loc3)17	loc4 := backend.NewLocation("test", 0, 0, 0)18	backend.AddLocation(loc4)19	loc5 := backend.NewLocation("test", 0, 0, 0)20	backend.AddLocation(loc5)21	loc6 := backend.NewLocation("test", 0, 0, 0)22	backend.AddLocation(loc6)23	loc7 := backend.NewLocation("test", 0, 0, 0)24	backend.AddLocation(loc7)25	loc8 := backend.NewLocation("test", 0, 0, 0)26	backend.AddLocation(loc8)27	loc9 := backend.NewLocation("test", 0, 0, 0)28	backend.AddLocation(loc9)

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