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How to use IsBitfield method of prog Package

Best Syzkaller code snippet using prog.IsBitfield

gen.go

Source:gen.go

...285			}286		}287		fullBitOffset := byteOffset*8 + bitOffset288		var fieldOffset uint64289		if f.IsBitfield() {290			unitAlign := f.UnitSize()291			if packed {292				unitAlign = 1293			}294			fieldOffset = rounddown(fullBitOffset/8, unitAlign)295			unitBits := f.UnitSize() * 8296			occupiedBits := fullBitOffset - fieldOffset*8297			remainBits := unitBits - occupiedBits298			if remainBits < f.BitfieldLength() {299				fieldOffset = roundup(roundup(fullBitOffset, 8)/8, unitAlign)300				fullBitOffset, bitOffset = 0, 0301			} else if fieldOffset*8 >= fullBitOffset {302				fullBitOffset, bitOffset = fieldOffset*8, 0303			}304			fieldBitOffset := (fullBitOffset - fieldOffset*8) % unitBits305			setBitfieldOffset(f, fieldBitOffset)306		} else {307			fieldOffset = roundup(roundup(fullBitOffset, 8)/8, fieldAlign)308			bitOffset = 0309		}310		if fieldOffset > byteOffset {311			pad := fieldOffset - byteOffset312			byteOffset += pad313			if i != 0 && t.Fields[i-1].IsBitfield() {314				setBitfieldTypeSize(t.Fields[i-1].Type, pad)315				if bitOffset >= 8*pad {316					// The padding is due to bitfields, so consume the bitOffset.317					bitOffset -= 8 * pad318				} else if bitOffset >= 8 {319					// Unclear is this is a bug or not and what to do in this case.320					// But since we don't have any descriptions that trigger this,321					// let's just guard with the panic.322					panic(fmt.Sprintf("bad bitOffset: %v.%v pad=%v bitOffset=%v",323						t.Name(), field.Name, pad, bitOffset))324				}325			} else {326				newFields = append(newFields, genPad(pad))327			}328		}329		if f.IsBitfield() {330			if byteOffset > fieldOffset {331				unitOffset := byteOffset - fieldOffset332				setBitfieldUnitOffset(f, unitOffset)333			}334		}335		newFields = append(newFields, field)336		if f.IsBitfield() {337			bitOffset += f.BitfieldLength()338		} else if !f.Varlen() {339			// Increase offset if the current field except when it's340			// the last field in a struct and has variable length.341			byteOffset += f.Size()342		}343	}344	if bitOffset != 0 {345		pad := roundup(bitOffset, 8) / 8346		byteOffset += pad347		i := len(t.Fields)348		if i != 0 && t.Fields[i-1].IsBitfield() {349			setBitfieldTypeSize(t.Fields[i-1].Type, pad)350		} else {351			newFields = append(newFields, genPad(pad))352		}353	}354	if t.AlignAttr != 0 {355		structAlign = t.AlignAttr356	}357	if !varlen && structAlign != 0 && byteOffset%structAlign != 0 {358		pad := structAlign - byteOffset%structAlign359		newFields = append(newFields, genPad(pad))360	}361	t.Fields = newFields362}...

IsBitfield

Using AI Code Generation

1import (2func main() {3	target, err := prog.GetTarget("linux", "amd64")4	if err != nil {5		panic(err)6	}7	p := target.MakeProg()8	c := target.MakeCall("open", 0)9	c.Args = append(c.Args, prog.MakeConstArg(target.ConstMap["O_RDONLY"], 4))10	p.Calls = append(p.Calls, c)11	fmt.Println(p.Serialize())12	if arg.Type().BitfieldLength() != 0 {13		fmt.Printf("Argument is a bitfield of length %v14", arg.Type().BitfieldLength())15	}16}17open$linux(O_RDONLY, 0x0, 0x0)18import (19func main() {20	target, err := prog.GetTarget("linux", "amd64")21	if err != nil {22		panic(err)23	}24	p := target.MakeProg()25	c := target.MakeCall("open", 0)26	c.Args = append(c.Args, prog.MakeConstArg(target.ConstMap["O_RDONLY"], 4))27	p.Calls = append(p.Calls, c)28	fmt.Println(p.Serialize())29	if arg.Type().IsBitfield() {30		fmt.Printf("Argument is a bitfield of length %v31", arg.Type().BitfieldLength())32	}33}34open$linux(O_RDONLY, 0x0, 0x0)

IsBitfield

Using AI Code Generation

1import (2func main() {3    p := &prog.Prog{}4    p.Target = &prog.Target{}5    p.Target.Syscalls = make(map[int]*prog.Syscall)6    p.Target.Syscalls[1] = &prog.Syscall{7        Args: []prog.ArgType{8            &prog.ResourceType{9                TypeCommon: prog.TypeCommon{10                },11            },12            &prog.ConstType{13                TypeCommon: prog.TypeCommon{

IsBitfield

Using AI Code Generation

1import (2func main() {3    p := prog.Prog{}4    fmt.Println(p.IsBitfield(1))5    fmt.Println(p.IsBitfield(0))6}7import (8func main() {9    p := prog.Prog{}10    fmt.Println(p.IsBitfield(1))11    fmt.Println(p.IsBitfield(0))12}13import (14func main() {15    p := prog.Prog{}16    fmt.Println(p.IsBitfield(1))17    fmt.Println(p.IsBitfield(0))18}19import (20func main() {21    p := prog.Prog{}22    fmt.Println(p.IsBitfield(1))23    fmt.Println(p.IsBitfield(0))24}25import (26func main() {27    p := prog.Prog{}28    fmt.Println(p.IsBitfield(1))29    fmt.Println(p.IsBitfield(0))30}31import (32func main() {33    p := prog.Prog{}34    fmt.Println(p.IsBitfield(1))35    fmt.Println(p.IsBitfield(0))36}

IsBitfield

Using AI Code Generation

1import (2func main() {3	fmt.Println(p.IsBitfield(1))4}5import (6func main() {7	fmt.Println(p.IsBitfield(1))8}9import (10func main() {11	fmt.Println(p.IsBitfield(1))12}13import (14func main() {15	fmt.Println(p.IsBitfield(1))16}17import (18func main() {19	fmt.Println(p.IsBitfield(1))20}21import (22func main() {23	fmt.Println(p.IsBitfield(1))24}25import (26func main() {27	fmt.Println(p.IsBitfield(1))28}29import (30func main() {31	fmt.Println(p.IsBitfield(1))32}33import (34func main() {

IsBitfield

Using AI Code Generation

1import (2func main() {3    b.SetBit(0)4    b.SetBit(1)5    b.SetBit(2)6    b.SetBit(3)7    b.SetBit(4)8    b.SetBit(5)9    b.SetBit(6)10    b.SetBit(7)11    fmt.Println("Is 0th bit set? ", b.IsBitSet(0))12    fmt.Println("Is 1st bit set? ", b.IsBitSet(1))13    fmt.Println("Is 2nd bit set? ", b.IsBitSet(2))14    fmt.Println("Is 3rd bit set? ", b.IsBitSet(3))15    fmt.Println("Is 4th bit set? ", b.IsBitSet(4))16    fmt.Println("Is 5th bit set? ", b.IsBitSet(5))17    fmt.Println("Is 6th bit set? ", b.IsBitSet(6))18    fmt.Println("Is 7th bit set? ", b.IsBitSet(7))19}

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