ebpf

package
v0.4.0 Latest Latest
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 Go to latest Published: Oct 17, 2021 License: MIT Imports: 8 Imported by: 1

Documentation

Overview

Package ebpf contains all types and constants to decode, encode, and generate eBPF bytecode in go. This package is inspired by the classic bpf package https://pkg.go.dev/golang.org/x/net/bpf

Index

Constants

View Source 
const (
	// BPF_IMM Load intermediate values into registers
	BPF_IMM uint8 = 0x00
	// BPF_ABS Load values at intermediate offsets from the socketbuffer into memory
	BPF_ABS uint8 = 0x20
	// BPF_IND Load values at variable offsets from the socketbuffer into memory
	BPF_IND uint8 = 0x40
	// BPF_MEM Load values from memory into registers visa versa.
	BPF_MEM uint8 = 0x60
	// BPF_LEN not used in eBPF, reserved
	BPF_LEN uint8 = 0x80
	// BPF_MSH not used in eBPF, reserved
	BPF_MSH uint8 = 0xa0
	// BPF_ATOMIC atomic operators (for multi processor synchronization)
	BPF_ATOMIC uint8 = 0xc0
)
View Source 
const (
	// BPF_LD is used for specialized load operations
	BPF_LD uint8 = iota
	// BPF_LDX is used for generic load operations
	BPF_LDX
	// BPF_ST is used for specialized store operations
	BPF_ST
	// BPF_STX is used for generic store operations
	BPF_STX
	// BPF_ALU is used for 32bit arithmatic operations
	BPF_ALU
	// BPF_JMP is used for 64bit branching operations
	BPF_JMP
	// BPF_JMP32 is used for 32bit branching operations
	BPF_JMP32
	// BPF_ALU64 is used for 64bit arithmatic operations
	BPF_ALU64
)
View Source 
const (
	// BPF_K indicates that the source argument of an operation is an immediate value
	BPF_K uint8 = 0x00
	// BPF_X indicates that the source argument of an operation is a register
	BPF_X uint8 = 0x08
)
View Source 
const (
	// BPF_ADD add two numbers
	BPF_ADD uint8 = 0x00
	// BPF_SUB subtract two numbers
	BPF_SUB uint8 = 0x10
	// BPF_MUL multiply two numbers
	BPF_MUL uint8 = 0x20
	// BPF_DIV divide two numbers
	BPF_DIV uint8 = 0x30
	// BPF_OR binary or two numbers
	BPF_OR uint8 = 0x40
	// BPF_AND binary and two numbers
	BPF_AND uint8 = 0x50
	// BPF_LSH left shift a number
	BPF_LSH uint8 = 0x60
	// BPF_RSH right shift a number
	BPF_RSH uint8 = 0x70
	// BPF_NEG negate/invert a number
	BPF_NEG uint8 = 0x80
	// BPF_MOD get the modulo of two numbers
	BPF_MOD uint8 = 0x90
	// BPF_XOR binary XOR two numbers
	BPF_XOR uint8 = 0xa0
	// BPF_MOV move register into another register
	BPF_MOV uint8 = 0xb0
	// BPF_ARSH Signed shift right
	BPF_ARSH uint8 = 0xc0
	// BPF_END endianness conversion
	BPF_END uint8 = 0xd0
)
View Source 
const (
	// BPF_JA jump always
	BPF_JA uint8 = 0x00
	// BPF_JEQ jump equal
	BPF_JEQ uint8 = 0x10
	// BPF_JGT jump greater than
	BPF_JGT uint8 = 0x20
	// BPF_JGE jump greater than or equal
	BPF_JGE uint8 = 0x30
	// BPF_JSET jump if A & B == 0
	BPF_JSET uint8 = 0x40
	// BPF_JNE jump not equal
	BPF_JNE uint8 = 0x50
	// BPF_JSGT jump signed greater than
	BPF_JSGT uint8 = 0x60
	// BPF_JSGE jump signed greater than or equal
	BPF_JSGE uint8 = 0x70
	// BPF_CALL call a helper function or BPF to BPF call
	BPF_CALL uint8 = 0x80
	// BPF_EXIT exit the program
	BPF_EXIT uint8 = 0x90
	// BPF_JLT jump less than
	BPF_JLT uint8 = 0xa0
	// BPF_JLE jump less than equal
	BPF_JLE uint8 = 0xb0
	// BPF_JSLT jump signed less than
	BPF_JSLT uint8 = 0xc0
	// BPF_JSLE jump signed less then equal
	BPF_JSLE uint8 = 0xd0
)
View Source 
const (
	// BPF_FETCH not an opcode on its own, used to build others
	BPF_FETCH uint8 = 0x01
	// BPF_XCHG atomic exchange
	BPF_XCHG uint8 = (0xe0 | BPF_FETCH)
	// BPF_CMPXCHG atomic compare-and-write
	BPF_CMPXCHG uint8 = (0xf0 | BPF_FETCH)
)
View Source 
const (
	// BPF_TO_LE convert to little-endian
	BPF_TO_LE uint8 = 0x00
	// BPF_TO_BE convert to big-endian
	BPF_TO_BE uint8 = 0x08
)
View Source 
const (
	// XDP_ABORTED exit program with an error
	XDP_ABORTED = 0
	// XDP_DROP drop the packet
	XDP_DROP = 1
	// XDP_PASS send packet to OS
	XDP_PASS = 2
	// XDP_TX send packet to egress on same port
	XDP_TX = 3
	// XDP_REDIRECT redirect to a different port, CPU or userspace
	XDP_REDIRECT = 4
)
View Source 
const (
	// BPF_PSEUDO_MAP_FD is used in the SRC register to mark the imm value as a map file descriptor
	// https://elixir.bootlin.com/linux/v5.12.4/source/include/uapi/linux/bpf.h#L376
	BPF_PSEUDO_MAP_FD = 1
	// BPF_PSEUDO_MAP_FD_VALUE is used in the SRC register to mark the imm value as a map value
	// https://elixir.bootlin.com/linux/v5.12.4/source/include/uapi/linux/bpf.h#L385
	BPF_PSEUDO_MAP_FD_VALUE = 2
	// BPF_PSEUDO_BTF_ID is used in the SRC register to mark the imm value as BTF ID
	// https://elixir.bootlin.com/linux/v5.12.4/source/include/uapi/linux/bpf.h#L376
	BPF_PSEUDO_BTF_ID = 3
)
View Source 
const (
	// BPFInstSize is the size of a BPF VM instruction
	BPFInstSize = int(unsafe.Sizeof(RawInstruction{}))
)

Variables

View Source 
var BPFHelperFuncNumToStr = map[int32]string{}/* 164 elements not displayed */

BPFHelperFuncNumToStr is a translation tables from the helper function ids/numbers to their string form. These are based on https://github.com/libbpf/libbpf/blob/master/src/bpf_helper_defs.h

Functions

func Hton16 added in v0.2.0 

func Hton16(u int16) int16

Hton16 converts a int16 from host-to-network byte order.

func Hton32 added in v0.2.0 

func Hton32(u int32) int32

Hton32 converts a int32 from host-to-network byte order.

func Hton64 added in v0.2.0 

func Hton64(u int64) int64

Hton64 converts a int64 from host-to-network byte order.

func HtonU16 added in v0.2.0 

func HtonU16(i uint16) uint16

HtonU16 converts a uint16 from host-to-network byte order.

func HtonU32 added in v0.2.0 

func HtonU32(i uint32) uint32

HtonU32 converts a uint32 from host-to-network byte order.

func HtonU64 added in v0.2.0 

func HtonU64(i uint64) uint64

HtonU64 converts a uint64 from host-to-network byte order.

func NewReg 

func NewReg(src Register, dest Register) uint8

func Ntoh16 added in v0.2.0 

func Ntoh16(u int16) int16

Ntoh16 converts a int16 from host-to-network byte order.

func Ntoh32 added in v0.2.0 

func Ntoh32(u int32) int32

Ntoh32 converts a int32 from host-to-network byte order.

func Ntoh64 added in v0.2.0 

func Ntoh64(u int64) int64

Ntoh64 converts a int64 from host-to-network byte order.

func NtohU16 added in v0.2.0 

func NtohU16(i uint16) uint16

NtohU16 converts a uint16 from network-to-host byte order.

func NtohU32 added in v0.2.0 

func NtohU32(i uint32) uint32

NtohU32 converts a uint32 from network-to-host byte order.

func NtohU64 added in v0.2.0 

func NtohU64(i uint64) uint64

NtohU64 converts a uint64 from network-to-host byte order.

Types

type ARSH32 

type ARSH32 struct {
	Dest  Register
	Value int32
}

func (*ARSH32) Raw 

func (a *ARSH32) Raw() ([]RawInstruction, error)

func (*ARSH32) String 

func (a *ARSH32) String() string

type ARSH32Register 

type ARSH32Register struct {
	Dest Register
	Src  Register
}

func (*ARSH32Register) Raw 

func (a *ARSH32Register) Raw() ([]RawInstruction, error)

func (*ARSH32Register) String 

func (a *ARSH32Register) String() string

type ARSH64 

type ARSH64 struct {
	Dest  Register
	Value int32
}

func (*ARSH64) Raw 

func (a *ARSH64) Raw() ([]RawInstruction, error)

func (*ARSH64) String 

func (a *ARSH64) String() string

type ARSH64Register 

type ARSH64Register struct {
	Dest Register
	Src  Register
}

func (*ARSH64Register) Raw 

func (a *ARSH64Register) Raw() ([]RawInstruction, error)

func (*ARSH64Register) String 

func (a *ARSH64Register) String() string

type Add32 

type Add32 struct {
	Dest  Register
	Value int32
}

func (*Add32) Raw 

func (a *Add32) Raw() ([]RawInstruction, error)

func (*Add32) String 

func (a *Add32) String() string

type Add32Register 

type Add32Register struct {
	Dest Register
	Src  Register
}

func (*Add32Register) Raw 

func (a *Add32Register) Raw() ([]RawInstruction, error)

func (*Add32Register) String 

func (a *Add32Register) String() string

type Add64 

type Add64 struct {
	Dest  Register
	Value int32
}

func (*Add64) Raw 

func (a *Add64) Raw() ([]RawInstruction, error)

func (*Add64) String 

func (a *Add64) String() string

type Add64Register 

type Add64Register struct {
	Dest Register
	Src  Register
}

func (*Add64Register) Raw 

func (a *Add64Register) Raw() ([]RawInstruction, error)

func (*Add64Register) String 

func (a *Add64Register) String() string

type And32 

type And32 struct {
	Dest  Register
	Value int32
}

func (*And32) Raw 

func (a *And32) Raw() ([]RawInstruction, error)

func (*And32) String 

func (a *And32) String() string

type And32Register 

type And32Register struct {
	Dest Register
	Src  Register
}

func (*And32Register) Raw 

func (a *And32Register) Raw() ([]RawInstruction, error)

func (*And32Register) String 

func (a *And32Register) String() string

type And64 

type And64 struct {
	Dest  Register
	Value int32
}

func (*And64) Raw 

func (a *And64) Raw() ([]RawInstruction, error)

func (*And64) String 

func (a *And64) String() string

type And64Register 

type And64Register struct {
	Dest Register
	Src  Register
}

func (*And64Register) Raw 

func (a *And64Register) Raw() ([]RawInstruction, error)

func (*And64Register) String 

func (a *And64Register) String() string

type AtomicAdd 

type AtomicAdd struct {
	Src    Register
	Dest   Register
	Offset int16
	Size   Size
	Fetch  bool
}

func (*AtomicAdd) Raw 

func (aa *AtomicAdd) Raw() ([]RawInstruction, error)

func (*AtomicAdd) String 

func (aa *AtomicAdd) String() string

type AtomicAnd 

type AtomicAnd struct {
	Src    Register
	Dest   Register
	Offset int16
	Size   Size
	Fetch  bool
}

func (*AtomicAnd) Raw 

func (aa *AtomicAnd) Raw() ([]RawInstruction, error)

func (*AtomicAnd) String 

func (aa *AtomicAnd) String() string

type AtomicCompareAndExchange added in v0.2.0 

type AtomicCompareAndExchange struct {
	Src    Register
	Dest   Register
	Offset int16
	Size   Size
}

func (*AtomicCompareAndExchange) Raw added in v0.2.0 

func (chg *AtomicCompareAndExchange) Raw() ([]RawInstruction, error)

func (*AtomicCompareAndExchange) String added in v0.2.0 

func (chg *AtomicCompareAndExchange) String() string

type AtomicExchange 

type AtomicExchange struct {
	Src    Register
	Dest   Register
	Offset int16
	Size   Size
}

func (*AtomicExchange) Raw 

func (chg *AtomicExchange) Raw() ([]RawInstruction, error)

func (*AtomicExchange) String 

func (chg *AtomicExchange) String() string

type AtomicOr 

type AtomicOr struct {
	Src    Register
	Dest   Register
	Offset int16
	Size   Size
	Fetch  bool
}

func (*AtomicOr) Raw 

func (ao *AtomicOr) Raw() ([]RawInstruction, error)

func (*AtomicOr) String 

func (ao *AtomicOr) String() string

type AtomicSub added in v0.2.0 

type AtomicSub struct {
	Src    Register
	Dest   Register
	Offset int16
	Size   Size
	Fetch  bool
}

func (*AtomicSub) Raw added in v0.2.0 

func (as *AtomicSub) Raw() ([]RawInstruction, error)

func (*AtomicSub) String added in v0.2.0 

func (as *AtomicSub) String() string

type AtomicXor 

type AtomicXor struct {
	Src    Register
	Dest   Register
	Offset int16
	Size   Size
	Fetch  bool
}

func (*AtomicXor) Raw 

func (ax *AtomicXor) Raw() ([]RawInstruction, error)

func (*AtomicXor) String 

func (ax *AtomicXor) String() string

type CallBPF 

type CallBPF struct {
	Offset int32
}

func (*CallBPF) Raw 

func (c *CallBPF) Raw() ([]RawInstruction, error)

func (*CallBPF) SetJumpTarget added in v0.2.0 

func (c *CallBPF) SetJumpTarget(relAddr int16)

func (*CallBPF) String 

func (c *CallBPF) String() string

type CallHelper 

type CallHelper struct {
	Function int32
}

func (*CallHelper) Raw 

func (c *CallHelper) Raw() ([]RawInstruction, error)

func (*CallHelper) String 

func (c *CallHelper) String() string

type Div32 

type Div32 struct {
	Dest  Register
	Value int32
}

func (*Div32) Raw 

func (a *Div32) Raw() ([]RawInstruction, error)

func (*Div32) String 

func (a *Div32) String() string

type Div32Register 

type Div32Register struct {
	Dest Register
	Src  Register
}

func (*Div32Register) Raw 

func (a *Div32Register) Raw() ([]RawInstruction, error)

func (*Div32Register) String 

func (a *Div32Register) String() string

type Div64 

type Div64 struct {
	Dest  Register
	Value int32
}

func (*Div64) Raw 

func (a *Div64) Raw() ([]RawInstruction, error)

func (*Div64) String 

func (a *Div64) String() string

type Div64Register 

type Div64Register struct {
	Dest Register
	Src  Register
}

func (*Div64Register) Raw 

func (a *Div64Register) Raw() ([]RawInstruction, error)

func (*Div64Register) String 

func (a *Div64Register) String() string

type End16ToBE added in v0.2.0 

type End16ToBE struct {
	Dest Register
}

func (*End16ToBE) Raw added in v0.2.0 

func (a *End16ToBE) Raw() ([]RawInstruction, error)

func (*End16ToBE) String added in v0.2.0 

func (a *End16ToBE) String() string

type End16ToLE added in v0.2.0 

type End16ToLE struct {
	Dest Register
}

func (*End16ToLE) Raw added in v0.2.0 

func (a *End16ToLE) Raw() ([]RawInstruction, error)

func (*End16ToLE) String added in v0.2.0 

func (a *End16ToLE) String() string

type End32ToBE 

type End32ToBE struct {
	Dest Register
}

func (*End32ToBE) Raw 

func (a *End32ToBE) Raw() ([]RawInstruction, error)

func (*End32ToBE) String 

func (a *End32ToBE) String() string

type End32ToLE 

type End32ToLE struct {
	Dest Register
}

func (*End32ToLE) Raw 

func (a *End32ToLE) Raw() ([]RawInstruction, error)

func (*End32ToLE) String 

func (a *End32ToLE) String() string

type End64ToBE 

type End64ToBE struct {
	Dest Register
}

func (*End64ToBE) Raw 

func (a *End64ToBE) Raw() ([]RawInstruction, error)

func (*End64ToBE) String 

func (a *End64ToBE) String() string

type End64ToLE 

type End64ToLE struct {
	Dest Register
}

func (*End64ToLE) Raw 

func (a *End64ToLE) Raw() ([]RawInstruction, error)

func (*End64ToLE) String 

func (a *End64ToLE) String() string

type Exit 

type Exit struct{}

func (*Exit) Raw 

func (e *Exit) Raw() ([]RawInstruction, error)

func (*Exit) String 

func (e *Exit) String() string

type Instruction 

type Instruction interface {
	fmt.Stringer
	Raw() ([]RawInstruction, error)
}

Instruction is any struct that can be turned into a list of raw instruction. It returns a list since the LD IMM 64bit consists of 2 actual eBPF "instructions"

func AssemblyToInstructions added in v0.2.0 

func AssemblyToInstructions(filename string, reader io.Reader) ([]Instruction, error)

AssemblyToInstructions takes in a reader and the name of the file which is used in error messages. This function attempts to parse the contents of the file as a super set of clang/LLVM eBPF assembly code. Meaning that we support the output of clang with the -S option and some additional features since clang/LLVM doesn't generate or assemble all instructions in the eBPF specification.

func Decode 

func Decode(rawIns []RawInstruction) ([]Instruction, error)

Decode decodes a slice of raw instructions into interpreted instructions

type Jump 

type Jump struct {
	Offset int16
}

func (*Jump) Raw 

func (a *Jump) Raw() ([]RawInstruction, error)

func (*Jump) SetJumpTarget added in v0.2.0 

func (a *Jump) SetJumpTarget(relAddr int16)

func (*Jump) String 

func (a *Jump) String() string

type JumpAnd added in v0.2.0 

type JumpAnd struct {
	Dest   Register
	Offset int16
	Value  int32
}

func (*JumpAnd) Raw added in v0.2.0 

func (a *JumpAnd) Raw() ([]RawInstruction, error)

func (*JumpAnd) SetJumpTarget added in v0.2.0 

func (a *JumpAnd) SetJumpTarget(relAddr int16)

func (*JumpAnd) SetValue added in v0.2.0 

func (a *JumpAnd) SetValue(value int32)

func (*JumpAnd) String added in v0.2.0 

func (a *JumpAnd) String() string

type JumpAnd32 added in v0.2.0 

type JumpAnd32 struct {
	Dest   Register
	Offset int16
	Value  int32
}

func (*JumpAnd32) Raw added in v0.2.0 

func (a *JumpAnd32) Raw() ([]RawInstruction, error)

func (*JumpAnd32) SetJumpTarget added in v0.2.0 

func (a *JumpAnd32) SetJumpTarget(relAddr int16)

func (*JumpAnd32) SetValue added in v0.2.0 

func (a *JumpAnd32) SetValue(value int32)

func (*JumpAnd32) String added in v0.2.0 

func (a *JumpAnd32) String() string

type JumpAndRegister added in v0.2.0 

type JumpAndRegister struct {
	Dest   Register
	Src    Register
	Offset int16
}

func (*JumpAndRegister) Raw added in v0.2.0 

func (a *JumpAndRegister) Raw() ([]RawInstruction, error)

func (*JumpAndRegister) SetJumpTarget added in v0.2.0 

func (a *JumpAndRegister) SetJumpTarget(relAddr int16)

func (*JumpAndRegister) String added in v0.2.0 

func (a *JumpAndRegister) String() string

type JumpAndRegister32 added in v0.2.0 

type JumpAndRegister32 struct {
	Dest   Register
	Src    Register
	Offset int16
}

func (*JumpAndRegister32) Raw added in v0.2.0 

func (a *JumpAndRegister32) Raw() ([]RawInstruction, error)

func (*JumpAndRegister32) SetJumpTarget added in v0.2.0 

func (a *JumpAndRegister32) SetJumpTarget(relAddr int16)

func (*JumpAndRegister32) String added in v0.2.0 

func (a *JumpAndRegister32) String() string

type JumpEqual 

type JumpEqual struct {
	Dest   Register
	Offset int16
	Value  int32
}

func (*JumpEqual) Raw 

func (a *JumpEqual) Raw() ([]RawInstruction, error)

func (*JumpEqual) SetJumpTarget added in v0.2.0 

func (a *JumpEqual) SetJumpTarget(relAddr int16)

func (*JumpEqual) SetValue added in v0.2.0 

func (a *JumpEqual) SetValue(value int32)

func (*JumpEqual) String 

func (a *JumpEqual) String() string

type JumpEqual32 

type JumpEqual32 struct {
	Dest   Register
	Offset int16
	Value  int32
}

func (*JumpEqual32) Raw 

func (a *JumpEqual32) Raw() ([]RawInstruction, error)

func (*JumpEqual32) SetJumpTarget added in v0.2.0 

func (a *JumpEqual32) SetJumpTarget(relAddr int16)

func (*JumpEqual32) SetValue added in v0.2.0 

func (a *JumpEqual32) SetValue(value int32)

func (*JumpEqual32) String 

func (a *JumpEqual32) String() string

type JumpEqualRegister 

type JumpEqualRegister struct {
	Dest   Register
	Src    Register
	Offset int16
}

func (*JumpEqualRegister) Raw 

func (a *JumpEqualRegister) Raw() ([]RawInstruction, error)

func (*JumpEqualRegister) SetJumpTarget added in v0.2.0 

func (a *JumpEqualRegister) SetJumpTarget(relAddr int16)

func (*JumpEqualRegister) String 

func (a *JumpEqualRegister) String() string

type JumpEqualRegister32 

type JumpEqualRegister32 struct {
	Dest   Register
	Src    Register
	Offset int16
}

func (*JumpEqualRegister32) Raw 

func (a *JumpEqualRegister32) Raw() ([]RawInstruction, error)

func (*JumpEqualRegister32) SetJumpTarget added in v0.2.0 

func (a *JumpEqualRegister32) SetJumpTarget(relAddr int16)

func (*JumpEqualRegister32) String 

func (a *JumpEqualRegister32) String() string

type JumpGreaterThan 

type JumpGreaterThan struct {
	Dest   Register
	Offset int16
	Value  int32
}

func (*JumpGreaterThan) Raw 

func (a *JumpGreaterThan) Raw() ([]RawInstruction, error)

func (*JumpGreaterThan) SetJumpTarget added in v0.2.0 

func (a *JumpGreaterThan) SetJumpTarget(relAddr int16)

func (*JumpGreaterThan) SetValue added in v0.2.0 

func (a *JumpGreaterThan) SetValue(value int32)

func (*JumpGreaterThan) String 

func (a *JumpGreaterThan) String() string

type JumpGreaterThan32 

type JumpGreaterThan32 struct {
	Dest   Register
	Offset int16
	Value  int32
}

func (*JumpGreaterThan32) Raw 

func (a *JumpGreaterThan32) Raw() ([]RawInstruction, error)

func (*JumpGreaterThan32) SetJumpTarget added in v0.2.0 

func (a *JumpGreaterThan32) SetJumpTarget(relAddr int16)

func (*JumpGreaterThan32) SetValue added in v0.2.0 

func (a *JumpGreaterThan32) SetValue(value int32)

func (*JumpGreaterThan32) String 

func (a *JumpGreaterThan32) String() string

type JumpGreaterThanEqual 

type JumpGreaterThanEqual struct {
	Dest   Register
	Offset int16
	Value  int32
}

func (*JumpGreaterThanEqual) Raw 

func (a *JumpGreaterThanEqual) Raw() ([]RawInstruction, error)

func (*JumpGreaterThanEqual) SetJumpTarget added in v0.2.0 

func (a *JumpGreaterThanEqual) SetJumpTarget(relAddr int16)

func (*JumpGreaterThanEqual) SetValue added in v0.2.0 

func (a *JumpGreaterThanEqual) SetValue(value int32)

func (*JumpGreaterThanEqual) String 

func (a *JumpGreaterThanEqual) String() string

type JumpGreaterThanEqual32 

type JumpGreaterThanEqual32 struct {
	Dest   Register
	Offset int16
	Value  int32
}

func (*JumpGreaterThanEqual32) Raw 

func (a *JumpGreaterThanEqual32) Raw() ([]RawInstruction, error)

func (*JumpGreaterThanEqual32) SetJumpTarget added in v0.2.0 

func (a *JumpGreaterThanEqual32) SetJumpTarget(relAddr int16)

func (*JumpGreaterThanEqual32) SetValue added in v0.2.0 

func (a *JumpGreaterThanEqual32) SetValue(value int32)

func (*JumpGreaterThanEqual32) String 

func (a *JumpGreaterThanEqual32) String() string

type JumpGreaterThanEqualRegister 

type JumpGreaterThanEqualRegister struct {
	Dest   Register
	Src    Register
	Offset int16
}

func (*JumpGreaterThanEqualRegister) Raw 

func (a *JumpGreaterThanEqualRegister) Raw() ([]RawInstruction, error)

func (*JumpGreaterThanEqualRegister) SetJumpTarget added in v0.2.0 

func (a *JumpGreaterThanEqualRegister) SetJumpTarget(relAddr int16)

func (*JumpGreaterThanEqualRegister) String 

func (a *JumpGreaterThanEqualRegister) String() string

type JumpGreaterThanEqualRegister32 

type JumpGreaterThanEqualRegister32 struct {
	Dest   Register
	Src    Register
	Offset int16
}

func (*JumpGreaterThanEqualRegister32) Raw 

func (a *JumpGreaterThanEqualRegister32) Raw() ([]RawInstruction, error)

func (*JumpGreaterThanEqualRegister32) SetJumpTarget added in v0.2.0 

func (a *JumpGreaterThanEqualRegister32) SetJumpTarget(relAddr int16)

func (*JumpGreaterThanEqualRegister32) String 

func (a *JumpGreaterThanEqualRegister32) String() string

type JumpGreaterThanRegister 

type JumpGreaterThanRegister struct {
	Dest   Register
	Src    Register
	Offset int16
}

func (*JumpGreaterThanRegister) Raw 

func (a *JumpGreaterThanRegister) Raw() ([]RawInstruction, error)

func (*JumpGreaterThanRegister) SetJumpTarget added in v0.2.0 

func (a *JumpGreaterThanRegister) SetJumpTarget(relAddr int16)

func (*JumpGreaterThanRegister) String 

func (a *JumpGreaterThanRegister) String() string

type JumpGreaterThanRegister32 

type JumpGreaterThanRegister32 struct {
	Dest   Register
	Src    Register
	Offset int16
}

func (*JumpGreaterThanRegister32) Raw 

func (a *JumpGreaterThanRegister32) Raw() ([]RawInstruction, error)

func (*JumpGreaterThanRegister32) SetJumpTarget added in v0.2.0 

func (a *JumpGreaterThanRegister32) SetJumpTarget(relAddr int16)

func (*JumpGreaterThanRegister32) String 

func (a *JumpGreaterThanRegister32) String() string

type JumpNotEqual added in v0.2.0 

type JumpNotEqual struct {
	Dest   Register
	Offset int16
	Value  int32
}

func (*JumpNotEqual) Raw added in v0.2.0 

func (a *JumpNotEqual) Raw() ([]RawInstruction, error)

func (*JumpNotEqual) SetJumpTarget added in v0.2.0 

func (a *JumpNotEqual) SetJumpTarget(relAddr int16)

func (*JumpNotEqual) SetValue added in v0.2.0 

func (a *JumpNotEqual) SetValue(value int32)

func (*JumpNotEqual) String added in v0.2.0 

func (a *JumpNotEqual) String() string

type JumpNotEqual32 added in v0.2.0 

type JumpNotEqual32 struct {
	Dest   Register
	Offset int16
	Value  int32
}

func (*JumpNotEqual32) Raw added in v0.2.0 

func (a *JumpNotEqual32) Raw() ([]RawInstruction, error)

func (*JumpNotEqual32) SetJumpTarget added in v0.2.0 

func (a *JumpNotEqual32) SetJumpTarget(relAddr int16)

func (*JumpNotEqual32) SetValue added in v0.2.0 

func (a *JumpNotEqual32) SetValue(value int32)

func (*JumpNotEqual32) String added in v0.2.0 

func (a *JumpNotEqual32) String() string

type JumpNotEqualRegister added in v0.2.0 

type JumpNotEqualRegister struct {
	Dest   Register
	Src    Register
	Offset int16
}

func (*JumpNotEqualRegister) Raw added in v0.2.0 

func (a *JumpNotEqualRegister) Raw() ([]RawInstruction, error)

func (*JumpNotEqualRegister) SetJumpTarget added in v0.2.0 

func (a *JumpNotEqualRegister) SetJumpTarget(relAddr int16)

func (*JumpNotEqualRegister) String added in v0.2.0 

func (a *JumpNotEqualRegister) String() string

type JumpNotEqualRegister32 added in v0.2.0 

type JumpNotEqualRegister32 struct {
	Dest   Register
	Src    Register
	Offset int16
}

func (*JumpNotEqualRegister32) Raw added in v0.2.0 

func (a *JumpNotEqualRegister32) Raw() ([]RawInstruction, error)

func (*JumpNotEqualRegister32) SetJumpTarget added in v0.2.0 

func (a *JumpNotEqualRegister32) SetJumpTarget(relAddr int16)

func (*JumpNotEqualRegister32) String added in v0.2.0 

func (a *JumpNotEqualRegister32) String() string

type JumpSignedGreaterThan 

type JumpSignedGreaterThan struct {
	Dest   Register
	Offset int16
	Value  int32
}

func (*JumpSignedGreaterThan) Raw 

func (a *JumpSignedGreaterThan) Raw() ([]RawInstruction, error)

func (*JumpSignedGreaterThan) SetJumpTarget added in v0.2.0 

func (a *JumpSignedGreaterThan) SetJumpTarget(relAddr int16)

func (*JumpSignedGreaterThan) SetValue added in v0.2.0 

func (a *JumpSignedGreaterThan) SetValue(value int32)

func (*JumpSignedGreaterThan) String 

func (a *JumpSignedGreaterThan) String() string

type JumpSignedGreaterThan32 

type JumpSignedGreaterThan32 struct {
	Dest   Register
	Offset int16
	Value  int32
}

func (*JumpSignedGreaterThan32) Raw 

func (a *JumpSignedGreaterThan32) Raw() ([]RawInstruction, error)

func (*JumpSignedGreaterThan32) SetJumpTarget added in v0.2.0 

func (a *JumpSignedGreaterThan32) SetJumpTarget(relAddr int16)

func (*JumpSignedGreaterThan32) SetValue added in v0.2.0 

func (a *JumpSignedGreaterThan32) SetValue(value int32)

func (*JumpSignedGreaterThan32) String 

func (a *JumpSignedGreaterThan32) String() string

type JumpSignedGreaterThanOrEqual 

type JumpSignedGreaterThanOrEqual struct {
	Dest   Register
	Offset int16
	Value  int32
}

func (*JumpSignedGreaterThanOrEqual) Raw 

func (a *JumpSignedGreaterThanOrEqual) Raw() ([]RawInstruction, error)

func (*JumpSignedGreaterThanOrEqual) SetJumpTarget added in v0.2.0 

func (a *JumpSignedGreaterThanOrEqual) SetJumpTarget(relAddr int16)

func (*JumpSignedGreaterThanOrEqual) SetValue added in v0.2.0 

func (a *JumpSignedGreaterThanOrEqual) SetValue(value int32)

func (*JumpSignedGreaterThanOrEqual) String 

func (a *JumpSignedGreaterThanOrEqual) String() string

type JumpSignedGreaterThanOrEqual32 

type JumpSignedGreaterThanOrEqual32 struct {
	Dest   Register
	Offset int16
	Value  int32
}

func (*JumpSignedGreaterThanOrEqual32) Raw 

func (a *JumpSignedGreaterThanOrEqual32) Raw() ([]RawInstruction, error)

func (*JumpSignedGreaterThanOrEqual32) SetJumpTarget added in v0.2.0 

func (a *JumpSignedGreaterThanOrEqual32) SetJumpTarget(relAddr int16)

func (*JumpSignedGreaterThanOrEqual32) SetValue added in v0.2.0 

func (a *JumpSignedGreaterThanOrEqual32) SetValue(value int32)

func (*JumpSignedGreaterThanOrEqual32) String 

func (a *JumpSignedGreaterThanOrEqual32) String() string

type JumpSignedGreaterThanOrEqualRegister 

type JumpSignedGreaterThanOrEqualRegister struct {
	Dest   Register
	Src    Register
	Offset int16
}

func (*JumpSignedGreaterThanOrEqualRegister) Raw 

func (a *JumpSignedGreaterThanOrEqualRegister) Raw() ([]RawInstruction, error)

func (*JumpSignedGreaterThanOrEqualRegister) SetJumpTarget added in v0.2.0 

func (a *JumpSignedGreaterThanOrEqualRegister) SetJumpTarget(relAddr int16)

func (*JumpSignedGreaterThanOrEqualRegister) String 

func (a *JumpSignedGreaterThanOrEqualRegister) String() string

type JumpSignedGreaterThanOrEqualRegister32 

type JumpSignedGreaterThanOrEqualRegister32 struct {
	Dest   Register
	Src    Register
	Offset int16
}

func (*JumpSignedGreaterThanOrEqualRegister32) Raw 

func (a *JumpSignedGreaterThanOrEqualRegister32) Raw() ([]RawInstruction, error)

func (*JumpSignedGreaterThanOrEqualRegister32) SetJumpTarget added in v0.2.0 

func (a *JumpSignedGreaterThanOrEqualRegister32) SetJumpTarget(relAddr int16)

func (*JumpSignedGreaterThanOrEqualRegister32) String 

func (a *JumpSignedGreaterThanOrEqualRegister32) String() string

type JumpSignedGreaterThanRegister 

type JumpSignedGreaterThanRegister struct {
	Dest   Register
	Src    Register
	Offset int16
}

func (*JumpSignedGreaterThanRegister) Raw 

func (a *JumpSignedGreaterThanRegister) Raw() ([]RawInstruction, error)

func (*JumpSignedGreaterThanRegister) SetJumpTarget added in v0.2.0 

func (a *JumpSignedGreaterThanRegister) SetJumpTarget(relAddr int16)

func (*JumpSignedGreaterThanRegister) String 

func (a *JumpSignedGreaterThanRegister) String() string

type JumpSignedGreaterThanRegister32 

type JumpSignedGreaterThanRegister32 struct {
	Dest   Register
	Src    Register
	Offset int16
}

func (*JumpSignedGreaterThanRegister32) Raw 

func (a *JumpSignedGreaterThanRegister32) Raw() ([]RawInstruction, error)

func (*JumpSignedGreaterThanRegister32) SetJumpTarget added in v0.2.0 

func (a *JumpSignedGreaterThanRegister32) SetJumpTarget(relAddr int16)

func (*JumpSignedGreaterThanRegister32) String 

func (a *JumpSignedGreaterThanRegister32) String() string

type JumpSignedSmallerThan 

type JumpSignedSmallerThan struct {
	Dest   Register
	Offset int16
	Value  int32
}

func (*JumpSignedSmallerThan) Raw 

func (a *JumpSignedSmallerThan) Raw() ([]RawInstruction, error)

func (*JumpSignedSmallerThan) SetJumpTarget added in v0.2.0 

func (a *JumpSignedSmallerThan) SetJumpTarget(relAddr int16)

func (*JumpSignedSmallerThan) SetValue added in v0.2.0 

func (a *JumpSignedSmallerThan) SetValue(value int32)

func (*JumpSignedSmallerThan) String 

func (a *JumpSignedSmallerThan) String() string

type JumpSignedSmallerThan32 

type JumpSignedSmallerThan32 struct {
	Dest   Register
	Offset int16
	Value  int32
}

func (*JumpSignedSmallerThan32) Raw 

func (a *JumpSignedSmallerThan32) Raw() ([]RawInstruction, error)

func (*JumpSignedSmallerThan32) SetJumpTarget added in v0.2.0 

func (a *JumpSignedSmallerThan32) SetJumpTarget(relAddr int16)

func (*JumpSignedSmallerThan32) SetValue added in v0.2.0 

func (a *JumpSignedSmallerThan32) SetValue(value int32)

func (*JumpSignedSmallerThan32) String 

func (a *JumpSignedSmallerThan32) String() string

type JumpSignedSmallerThanOrEqual 

type JumpSignedSmallerThanOrEqual struct {
	Dest   Register
	Offset int16
	Value  int32
}

func (*JumpSignedSmallerThanOrEqual) Raw 

func (a *JumpSignedSmallerThanOrEqual) Raw() ([]RawInstruction, error)

func (*JumpSignedSmallerThanOrEqual) SetJumpTarget added in v0.2.0 

func (a *JumpSignedSmallerThanOrEqual) SetJumpTarget(relAddr int16)

func (*JumpSignedSmallerThanOrEqual) SetValue added in v0.2.0 

func (a *JumpSignedSmallerThanOrEqual) SetValue(value int32)

func (*JumpSignedSmallerThanOrEqual) String 

func (a *JumpSignedSmallerThanOrEqual) String() string

type JumpSignedSmallerThanOrEqual32 

type JumpSignedSmallerThanOrEqual32 struct {
	Dest   Register
	Offset int16
	Value  int32
}

func (*JumpSignedSmallerThanOrEqual32) Raw 

func (a *JumpSignedSmallerThanOrEqual32) Raw() ([]RawInstruction, error)

func (*JumpSignedSmallerThanOrEqual32) SetJumpTarget added in v0.2.0 

func (a *JumpSignedSmallerThanOrEqual32) SetJumpTarget(relAddr int16)

func (*JumpSignedSmallerThanOrEqual32) SetValue added in v0.2.0 

func (a *JumpSignedSmallerThanOrEqual32) SetValue(value int32)

func (*JumpSignedSmallerThanOrEqual32) String 

func (a *JumpSignedSmallerThanOrEqual32) String() string

type JumpSignedSmallerThanOrEqualRegister 

type JumpSignedSmallerThanOrEqualRegister struct {
	Dest   Register
	Src    Register
	Offset int16
}

func (*JumpSignedSmallerThanOrEqualRegister) Raw 

func (a *JumpSignedSmallerThanOrEqualRegister) Raw() ([]RawInstruction, error)

func (*JumpSignedSmallerThanOrEqualRegister) SetJumpTarget added in v0.2.0 

func (a *JumpSignedSmallerThanOrEqualRegister) SetJumpTarget(relAddr int16)

func (*JumpSignedSmallerThanOrEqualRegister) String 

func (a *JumpSignedSmallerThanOrEqualRegister) String() string

type JumpSignedSmallerThanOrEqualRegister32 

type JumpSignedSmallerThanOrEqualRegister32 struct {
	Dest   Register
	Src    Register
	Offset int16
}

func (*JumpSignedSmallerThanOrEqualRegister32) Raw 

func (a *JumpSignedSmallerThanOrEqualRegister32) Raw() ([]RawInstruction, error)

func (*JumpSignedSmallerThanOrEqualRegister32) SetJumpTarget added in v0.2.0 

func (a *JumpSignedSmallerThanOrEqualRegister32) SetJumpTarget(relAddr int16)

func (*JumpSignedSmallerThanOrEqualRegister32) String 

func (a *JumpSignedSmallerThanOrEqualRegister32) String() string

type JumpSignedSmallerThanRegister 

type JumpSignedSmallerThanRegister struct {
	Dest   Register
	Src    Register
	Offset int16
}

func (*JumpSignedSmallerThanRegister) Raw 

func (a *JumpSignedSmallerThanRegister) Raw() ([]RawInstruction, error)

func (*JumpSignedSmallerThanRegister) SetJumpTarget added in v0.2.0 

func (a *JumpSignedSmallerThanRegister) SetJumpTarget(relAddr int16)

func (*JumpSignedSmallerThanRegister) String 

func (a *JumpSignedSmallerThanRegister) String() string

type JumpSignedSmallerThanRegister32 

type JumpSignedSmallerThanRegister32 struct {
	Dest   Register
	Src    Register
	Offset int16
}

func (*JumpSignedSmallerThanRegister32) Raw 

func (a *JumpSignedSmallerThanRegister32) Raw() ([]RawInstruction, error)

func (*JumpSignedSmallerThanRegister32) SetJumpTarget added in v0.2.0 

func (a *JumpSignedSmallerThanRegister32) SetJumpTarget(relAddr int16)

func (*JumpSignedSmallerThanRegister32) String 

func (a *JumpSignedSmallerThanRegister32) String() string

type JumpSmallerThan 

type JumpSmallerThan struct {
	Dest   Register
	Offset int16
	Value  int32
}

func (*JumpSmallerThan) Raw 

func (a *JumpSmallerThan) Raw() ([]RawInstruction, error)

func (*JumpSmallerThan) SetJumpTarget added in v0.2.0 

func (a *JumpSmallerThan) SetJumpTarget(relAddr int16)

func (*JumpSmallerThan) SetValue added in v0.2.0 

func (a *JumpSmallerThan) SetValue(value int32)

func (*JumpSmallerThan) String 

func (a *JumpSmallerThan) String() string

type JumpSmallerThan32 

type JumpSmallerThan32 struct {
	Dest   Register
	Offset int16
	Value  int32
}

func (*JumpSmallerThan32) Raw 

func (a *JumpSmallerThan32) Raw() ([]RawInstruction, error)

func (*JumpSmallerThan32) SetJumpTarget added in v0.2.0 

func (a *JumpSmallerThan32) SetJumpTarget(relAddr int16)

func (*JumpSmallerThan32) SetValue added in v0.2.0 

func (a *JumpSmallerThan32) SetValue(value int32)

func (*JumpSmallerThan32) String 

func (a *JumpSmallerThan32) String() string

type JumpSmallerThanEqual 

type JumpSmallerThanEqual struct {
	Dest   Register
	Offset int16
	Value  int32
}

func (*JumpSmallerThanEqual) Raw 

func (a *JumpSmallerThanEqual) Raw() ([]RawInstruction, error)

func (*JumpSmallerThanEqual) SetJumpTarget added in v0.2.0 

func (a *JumpSmallerThanEqual) SetJumpTarget(relAddr int16)

func (*JumpSmallerThanEqual) SetValue added in v0.2.0 

func (a *JumpSmallerThanEqual) SetValue(value int32)

func (*JumpSmallerThanEqual) String 

func (a *JumpSmallerThanEqual) String() string

type JumpSmallerThanEqual32 

type JumpSmallerThanEqual32 struct {
	Dest   Register
	Offset int16
	Value  int32
}

func (*JumpSmallerThanEqual32) Raw 

func (a *JumpSmallerThanEqual32) Raw() ([]RawInstruction, error)

func (*JumpSmallerThanEqual32) SetJumpTarget added in v0.2.0 

func (a *JumpSmallerThanEqual32) SetJumpTarget(relAddr int16)

func (*JumpSmallerThanEqual32) SetValue added in v0.2.0 

func (a *JumpSmallerThanEqual32) SetValue(value int32)

func (*JumpSmallerThanEqual32) String 

func (a *JumpSmallerThanEqual32) String() string

type JumpSmallerThanEqualRegister 

type JumpSmallerThanEqualRegister struct {
	Dest   Register
	Src    Register
	Offset int16
}

func (*JumpSmallerThanEqualRegister) Raw 

func (a *JumpSmallerThanEqualRegister) Raw() ([]RawInstruction, error)

func (*JumpSmallerThanEqualRegister) SetJumpTarget added in v0.2.0 

func (a *JumpSmallerThanEqualRegister) SetJumpTarget(relAddr int16)

func (*JumpSmallerThanEqualRegister) String 

func (a *JumpSmallerThanEqualRegister) String() string

type JumpSmallerThanEqualRegister32 

type JumpSmallerThanEqualRegister32 struct {
	Dest   Register
	Src    Register
	Offset int16
}

func (*JumpSmallerThanEqualRegister32) Raw 

func (a *JumpSmallerThanEqualRegister32) Raw() ([]RawInstruction, error)

func (*JumpSmallerThanEqualRegister32) SetJumpTarget added in v0.2.0 

func (a *JumpSmallerThanEqualRegister32) SetJumpTarget(relAddr int16)

func (*JumpSmallerThanEqualRegister32) String 

func (a *JumpSmallerThanEqualRegister32) String() string

type JumpSmallerThanRegister 

type JumpSmallerThanRegister struct {
	Dest   Register
	Src    Register
	Offset int16
}

func (*JumpSmallerThanRegister) Raw 

func (a *JumpSmallerThanRegister) Raw() ([]RawInstruction, error)

func (*JumpSmallerThanRegister) SetJumpTarget added in v0.2.0 

func (a *JumpSmallerThanRegister) SetJumpTarget(relAddr int16)

func (*JumpSmallerThanRegister) String 

func (a *JumpSmallerThanRegister) String() string

type JumpSmallerThanRegister32 

type JumpSmallerThanRegister32 struct {
	Dest   Register
	Src    Register
	Offset int16
}

func (*JumpSmallerThanRegister32) Raw 

func (a *JumpSmallerThanRegister32) Raw() ([]RawInstruction, error)

func (*JumpSmallerThanRegister32) SetJumpTarget added in v0.2.0 

func (a *JumpSmallerThanRegister32) SetJumpTarget(relAddr int16)

func (*JumpSmallerThanRegister32) String 

func (a *JumpSmallerThanRegister32) String() string

type Jumper added in v0.2.0 

type Jumper interface {
	SetJumpTarget(relAddr int16)
}

Jumper is any instruction that can jump to another piece of code using an 16-bit address

type LoadConstant64bit 

type LoadConstant64bit struct {
	Dest Register
	Src  Register
	Val1 uint32
	Val2 uint32
}

func (*LoadConstant64bit) Raw 

func (lc *LoadConstant64bit) Raw() ([]RawInstruction, error)

func (*LoadConstant64bit) String 

func (lc *LoadConstant64bit) String() string

type LoadMemory 

type LoadMemory struct {
	Src    Register
	Dest   Register
	Offset int16
	Size   Size
}

func (*LoadMemory) Raw 

func (lm *LoadMemory) Raw() ([]RawInstruction, error)

func (*LoadMemory) String 

func (lm *LoadMemory) String() string

type LoadSocketBuf 

type LoadSocketBuf struct {
	Src    Register
	Size   Size
	Offset int32
}

func (*LoadSocketBuf) Raw 

func (lm *LoadSocketBuf) Raw() ([]RawInstruction, error)

func (*LoadSocketBuf) String 

func (lm *LoadSocketBuf) String() string

type LoadSocketBufConstant 

type LoadSocketBufConstant struct {
	Value int32
	Size  Size
}

func (*LoadSocketBufConstant) Raw 

func (lm *LoadSocketBufConstant) Raw() ([]RawInstruction, error)

func (*LoadSocketBufConstant) String 

func (lm *LoadSocketBufConstant) String() string

type Lsh32 

type Lsh32 struct {
	Dest  Register
	Value int32
}

func (*Lsh32) Raw 

func (a *Lsh32) Raw() ([]RawInstruction, error)

func (*Lsh32) String 

func (a *Lsh32) String() string

type Lsh32Register 

type Lsh32Register struct {
	Dest Register
	Src  Register
}

func (*Lsh32Register) Raw 

func (a *Lsh32Register) Raw() ([]RawInstruction, error)

func (*Lsh32Register) String 

func (a *Lsh32Register) String() string

type Lsh64 

type Lsh64 struct {
	Dest  Register
	Value int32
}

func (*Lsh64) Raw 

func (a *Lsh64) Raw() ([]RawInstruction, error)

func (*Lsh64) String 

func (a *Lsh64) String() string

type Lsh64Register 

type Lsh64Register struct {
	Dest Register
	Src  Register
}

func (*Lsh64Register) Raw 

func (a *Lsh64Register) Raw() ([]RawInstruction, error)

func (*Lsh64Register) String 

func (a *Lsh64Register) String() string

type Mod32 

type Mod32 struct {
	Dest  Register
	Value int32
}

func (*Mod32) Raw 

func (a *Mod32) Raw() ([]RawInstruction, error)

func (*Mod32) String 

func (a *Mod32) String() string

type Mod32Register 

type Mod32Register struct {
	Dest Register
	Src  Register
}

func (*Mod32Register) Raw 

func (a *Mod32Register) Raw() ([]RawInstruction, error)

func (*Mod32Register) String 

func (a *Mod32Register) String() string

type Mod64 

type Mod64 struct {
	Dest  Register
	Value int32
}

func (*Mod64) Raw 

func (a *Mod64) Raw() ([]RawInstruction, error)

func (*Mod64) String 

func (a *Mod64) String() string

type Mod64Register 

type Mod64Register struct {
	Dest Register
	Src  Register
}

func (*Mod64Register) Raw 

func (a *Mod64Register) Raw() ([]RawInstruction, error)

func (*Mod64Register) String 

func (a *Mod64Register) String() string

type Mov32 

type Mov32 struct {
	Dest  Register
	Value int32
}

func (*Mov32) Raw 

func (a *Mov32) Raw() ([]RawInstruction, error)

func (*Mov32) String 

func (a *Mov32) String() string

type Mov32Register 

type Mov32Register struct {
	Dest Register
	Src  Register
}

func (*Mov32Register) Raw 

func (a *Mov32Register) Raw() ([]RawInstruction, error)

func (*Mov32Register) String 

func (a *Mov32Register) String() string

type Mov64 

type Mov64 struct {
	Dest  Register
	Value int32
}

func (*Mov64) Raw 

func (a *Mov64) Raw() ([]RawInstruction, error)

func (*Mov64) String 

func (a *Mov64) String() string

type Mov64Register 

type Mov64Register struct {
	Dest Register
	Src  Register
}

func (*Mov64Register) Raw 

func (a *Mov64Register) Raw() ([]RawInstruction, error)

func (*Mov64Register) String 

func (a *Mov64Register) String() string

type Mul32 

type Mul32 struct {
	Dest  Register
	Value int32
}

func (*Mul32) Raw 

func (a *Mul32) Raw() ([]RawInstruction, error)

func (*Mul32) String 

func (a *Mul32) String() string

type Mul32Register 

type Mul32Register struct {
	Dest Register
	Src  Register
}

func (*Mul32Register) Raw 

func (a *Mul32Register) Raw() ([]RawInstruction, error)

func (*Mul32Register) String 

func (a *Mul32Register) String() string

type Mul64 

type Mul64 struct {
	Dest  Register
	Value int32
}

func (*Mul64) Raw 

func (a *Mul64) Raw() ([]RawInstruction, error)

func (*Mul64) String 

func (a *Mul64) String() string

type Mul64Register 

type Mul64Register struct {
	Dest Register
	Src  Register
}

func (*Mul64Register) Raw 

func (a *Mul64Register) Raw() ([]RawInstruction, error)

func (*Mul64Register) String 

func (a *Mul64Register) String() string

type Neg32 

type Neg32 struct {
	Dest Register
}

func (*Neg32) Raw 

func (a *Neg32) Raw() ([]RawInstruction, error)

func (*Neg32) String 

func (a *Neg32) String() string

type Neg64 

type Neg64 struct {
	Dest Register
}

func (*Neg64) Raw 

func (a *Neg64) Raw() ([]RawInstruction, error)

func (*Neg64) String 

func (a *Neg64) String() string

type Nop 

type Nop struct{}

Nop does not exist in the eBPF definition, it is a filler instruction this package adds to decoded programs so the index numbers of the slice stay the same as the index numbers of the raw instructions, even when the LoadConstant64bit op is used. This is to avoid confusion when looking at jump commands or calculating offsets for FD relocation.

func (*Nop) Raw 

func (n *Nop) Raw() ([]RawInstruction, error)

func (*Nop) String 

func (n *Nop) String() string

type Or32 

type Or32 struct {
	Dest  Register
	Value int32
}

func (*Or32) Raw 

func (a *Or32) Raw() ([]RawInstruction, error)

func (*Or32) String 

func (a *Or32) String() string

type Or32Register 

type Or32Register struct {
	Dest Register
	Src  Register
}

func (*Or32Register) Raw 

func (a *Or32Register) Raw() ([]RawInstruction, error)

func (*Or32Register) String 

func (a *Or32Register) String() string

type Or64 

type Or64 struct {
	Dest  Register
	Value int32
}

func (*Or64) Raw 

func (a *Or64) Raw() ([]RawInstruction, error)

func (*Or64) String 

func (a *Or64) String() string

type Or64Register 

type Or64Register struct {
	Dest Register
	Src  Register
}

func (*Or64Register) Raw 

func (a *Or64Register) Raw() ([]RawInstruction, error)

func (*Or64Register) String 

func (a *Or64Register) String() string

type RawInstruction 

type RawInstruction struct {
	// Operation to execute.
	Op uint8
	// The operation register, split into source and destination register
	// The upper 4 bits are the destination register, the lower 4 bits the source
	Reg uint8
	//
	Off int16
	// Constant parameter. The meaning depends on the Op.
	Imm int32
}

A RawInstruction is a BPF virtual machine instruction.

func Encode 

func Encode(ins []Instruction) ([]RawInstruction, error)

Encode turns a slice of instructions into raw instructions

func MustEncode 

func MustEncode(raw []Instruction) []RawInstruction

MustEncode does the same as Encode but rather than returning an error it will panic

func (*RawInstruction) GetDestReg 

func (i *RawInstruction) GetDestReg() Register

func (*RawInstruction) GetSourceReg 

func (i *RawInstruction) GetSourceReg() Register

func (*RawInstruction) SetDestReg 

func (i *RawInstruction) SetDestReg(v Register)

func (*RawInstruction) SetSourceReg 

func (i *RawInstruction) SetSourceReg(v Register)

type Register 

type Register uint8

Register is a value used to indicate a source or destination register. Registers are used to pass arguments to variables and as scrach room for. See section 'BPF kernel internals' of https://www.kernel.org/doc/Documentation/networking/filter.rst 

const (
	// BPF_REG_0 aka R0 is the return value of the eBPF program, it is also used by helper functions and BPF to BPF
	// calls for return values.
	BPF_REG_0 Register = iota
	// BPF_REG_1 aka R1 is the first argument of a helper function or BPF to BPF call, it is set at the start of
	// a eBPF program to different values depending on the program type (typically a pointer to a struct).
	// After calling a helper function or BPF function one should assume the constents will be changed.
	BPF_REG_1
	// BPF_REG_2 aka R2 is the second argument of a helper function or BPF to BPF call, it can be set at the start
	// of the program depending on the program type but is typically not used.
	// After calling a helper function or BPF function one should assume the constents will be changed.
	BPF_REG_2
	// BPF_REG_3 aka R3 is the third argument of a helper function or BPF to BPF call, it can be set at the start
	// of the program depending on the program type but is typically not used.
	// After calling a helper function or BPF function one should assume the constents will be changed.
	BPF_REG_3
	// BPF_REG_4 aka R4 is the forth argument of a helper function or BPF to BPF call, it can be set at the start
	// of the program depending on the program type but is typically not used.
	// After calling a helper function or BPF function one should assume the constents will be changed.
	BPF_REG_4
	// BPF_REG_5 aka R5 is the fifth argument of a helper function or BPF to BPF call, it can be set at the start
	// of the program depending on the program type but is typically not used.
	// After calling a helper function or BPF function one should assume the constents will be changed.
	BPF_REG_5
	// BPF_REG_6 aka R6 is a callee saved register for helper functions, meaning the contents will not be changed
	// by the helper function.
	BPF_REG_6
	// BPF_REG_7 aka R7 is a callee saved register for helper functions, meaning the contents will not be changed
	// by the helper function.
	BPF_REG_7
	// BPF_REG_8 aka R8 is a callee saved register for helper functions, meaning the contents will not be changed
	// by the helper function.
	BPF_REG_8
	// BPF_REG_9 aka R9 is a callee saved register for helper functions, meaning the contents will not be changed
	// by the helper function.
	BPF_REG_9
	// BPF_REG_10 aka R10 is a read-only register containing the frame pointer. It is a pointer to the start of
	// the stack data reserved for this program. Each program/bpf to bpf function has its own stack.
	BPF_REG_10
	// BPF_REG_MAX is an invalid register, it is used for enumeration over registers.
	BPF_REG_MAX
)
const PSEUDO_CALL Register = 0x01

PSEUDO_CALL If the source register is 1, it is not a call to a helper function but to another bpf function(bpf to bpf call).

func (*Register) Capture added in v0.2.0 

func (r *Register) Capture(values []string) error

func (Register) String 

func (r Register) String() string

type Rsh32 

type Rsh32 struct {
	Dest  Register
	Value int32
}

func (*Rsh32) Raw 

func (a *Rsh32) Raw() ([]RawInstruction, error)

func (*Rsh32) String 

func (a *Rsh32) String() string

type Rsh32Register 

type Rsh32Register struct {
	Dest Register
	Src  Register
}

func (*Rsh32Register) Raw 

func (a *Rsh32Register) Raw() ([]RawInstruction, error)

func (*Rsh32Register) String 

func (a *Rsh32Register) String() string

type Rsh64 

type Rsh64 struct {
	Dest  Register
	Value int32
}

func (*Rsh64) Raw 

func (a *Rsh64) Raw() ([]RawInstruction, error)

func (*Rsh64) String 

func (a *Rsh64) String() string

type Rsh64Register 

type Rsh64Register struct {
	Dest Register
	Src  Register
}

func (*Rsh64Register) Raw 

func (a *Rsh64Register) Raw() ([]RawInstruction, error)

func (*Rsh64Register) String 

func (a *Rsh64Register) String() string

type Size 

type Size uint8
const (
	// BPF_W Word - 4 bytes
	BPF_W Size = 0x00
	// BPF_H Half-Word - 2 bytes
	BPF_H Size = 0x08
	// BPF_B Byte - 1 byte
	BPF_B Size = 0x10
	// BPF_DW Double-Word - 8 bytes
	BPF_DW Size = 0x18
)

func (*Size) Capture added in v0.2.0 

func (s *Size) Capture(values []string) error

func (Size) String 

func (s Size) String() string

type StoreMemoryConstant 

type StoreMemoryConstant struct {
	Dest   Register
	Size   Size
	Offset int16
	Value  int32
}

func (*StoreMemoryConstant) Raw 

func (sm *StoreMemoryConstant) Raw() ([]RawInstruction, error)

func (*StoreMemoryConstant) String 

func (sm *StoreMemoryConstant) String() string

type StoreMemoryRegister 

type StoreMemoryRegister struct {
	Src    Register
	Dest   Register
	Offset int16
	Size   Size
}

func (*StoreMemoryRegister) Raw 

func (sm *StoreMemoryRegister) Raw() ([]RawInstruction, error)

func (*StoreMemoryRegister) String 

func (sm *StoreMemoryRegister) String() string

type Sub32 

type Sub32 struct {
	Dest  Register
	Value int32
}

func (*Sub32) Raw 

func (a *Sub32) Raw() ([]RawInstruction, error)

func (*Sub32) String 

func (a *Sub32) String() string

type Sub32Register 

type Sub32Register struct {
	Dest Register
	Src  Register
}

func (*Sub32Register) Raw 

func (a *Sub32Register) Raw() ([]RawInstruction, error)

func (*Sub32Register) String 

func (a *Sub32Register) String() string

type Sub64 

type Sub64 struct {
	Dest  Register
	Value int32
}

func (*Sub64) Raw 

func (a *Sub64) Raw() ([]RawInstruction, error)

func (*Sub64) String 

func (a *Sub64) String() string

type Sub64Register 

type Sub64Register struct {
	Dest Register
	Src  Register
}

func (*Sub64Register) Raw 

func (a *Sub64Register) Raw() ([]RawInstruction, error)

func (*Sub64Register) String 

func (a *Sub64Register) String() string

type Valuer added in v0.2.0 

type Valuer interface {
	SetValue(value int32)
}

Valuer is any instruction for which a constant value can be set

type Xor32 

type Xor32 struct {
	Dest  Register
	Value int32
}

func (*Xor32) Raw 

func (a *Xor32) Raw() ([]RawInstruction, error)

func (*Xor32) String 

func (a *Xor32) String() string

type Xor32Register 

type Xor32Register struct {
	Dest Register
	Src  Register
}

func (*Xor32Register) Raw 

func (a *Xor32Register) Raw() ([]RawInstruction, error)

func (*Xor32Register) String 

func (a *Xor32Register) String() string

type Xor64 

type Xor64 struct {
	Dest  Register
	Value int32
}

func (*Xor64) Raw 

func (a *Xor64) Raw() ([]RawInstruction, error)

func (*Xor64) String 

func (a *Xor64) String() string

type Xor64Register 

type Xor64Register struct {
	Dest Register
	Src  Register
}

func (*Xor64Register) Raw 

func (a *Xor64Register) Raw() ([]RawInstruction, error)

func (*Xor64Register) String 

func (a *Xor64Register) String() string

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