operand

package
v0.2.0 Latest Latest
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 Go to latest Published: Apr 19, 2021 License: BSD-3-Clause Imports: 2 Imported by: 52

Documentation

Overview

Package operand provides types for instruction operands.

Index

Constants

This section is empty.

Variables

This section is empty.

Functions

func Is1 

func Is1(op Op) bool

Is1 returns true if op is the immediate constant 1.

func Is3 

func Is3(op Op) bool

Is3 returns true if op is the immediate constant 3.

func IsAL 

func IsAL(op Op) bool

IsAL returns true if op is the AL register.

func IsAX 

func IsAX(op Op) bool

IsAX returns true if op is the 16-bit AX register.

func IsCL 

func IsCL(op Op) bool

IsCL returns true if op is the CL register.

func IsEAX 

func IsEAX(op Op) bool

IsEAX returns true if op is the 32-bit EAX register.

func IsGP 

func IsGP(op Op, n uint) bool

IsGP returns true if op is a general-purpose register of size n bytes.

func IsIMM16 

func IsIMM16(op Op) bool

IsIMM16 returns true is op is a 16-bit immediate.

func IsIMM2U 

func IsIMM2U(op Op) bool

IsIMM2U returns true if op is a 2-bit unsigned immediate (less than 4).

func IsIMM32 

func IsIMM32(op Op) bool

IsIMM32 returns true is op is a 32-bit immediate.

func IsIMM64 

func IsIMM64(op Op) bool

IsIMM64 returns true is op is a 64-bit immediate.

func IsIMM8 

func IsIMM8(op Op) bool

IsIMM8 returns true is op is an 8-bit immediate.

func IsM 

func IsM(op Op) bool

IsM returns true if op is a 16-, 32- or 64-bit memory operand.

func IsM128 

func IsM128(op Op) bool

IsM128 returns true if op is a 128-bit memory operand.

func IsM16 

func IsM16(op Op) bool

IsM16 returns true if op is a 16-bit memory operand.

func IsM256 

func IsM256(op Op) bool

IsM256 returns true if op is a 256-bit memory operand.

func IsM32 

func IsM32(op Op) bool

IsM32 returns true if op is a 16-bit memory operand.

func IsM64 

func IsM64(op Op) bool

IsM64 returns true if op is a 64-bit memory operand.

func IsM8 

func IsM8(op Op) bool

IsM8 returns true if op is an 8-bit memory operand.

func IsMReg 

func IsMReg(op Op) bool

IsMReg returns true if op is a register that can be used in a memory operand.

func IsMSize 

func IsMSize(op Op, n uint) bool

IsMSize returns true if op is a memory operand using general-purpose address registers of the given size in bytes.

func IsMem 

func IsMem(op Op) bool

IsMem returns whether op has type Mem.

func IsPseudo 

func IsPseudo(op Op) bool

IsPseudo returns true if op is a pseudo register.

func IsR16 

func IsR16(op Op) bool

IsR16 returns true if op is a 16-bit general-purpose register.

func IsR32 

func IsR32(op Op) bool

IsR32 returns true if op is a 32-bit general-purpose register.

func IsR64 

func IsR64(op Op) bool

IsR64 returns true if op is a 64-bit general-purpose register.

func IsR8 

func IsR8(op Op) bool

IsR8 returns true if op is an 8-bit general-purpose register.

func IsRAX 

func IsRAX(op Op) bool

IsRAX returns true if op is the 64-bit RAX register.

func IsREL32 

func IsREL32(op Op) bool

IsREL32 returns true if op is an offset relative to instruction pointer, or a label reference.

func IsREL8 

func IsREL8(op Op) bool

IsREL8 returns true if op is an 8-bit offset relative to instruction pointer.

func IsRegister 

func IsRegister(op Op) bool

IsRegister returns whether op has type reg.Register.

func IsRegisterKind 

func IsRegisterKind(op Op, k reg.Kind) bool

IsRegisterKind returns true if op is a register of the given kind.

func IsRegisterKindSize 

func IsRegisterKindSize(op Op, k reg.Kind, n uint) bool

IsRegisterKindSize returns true if op is a register of the given kind and size in bytes.

func IsRel 

func IsRel(op Op) bool

IsRel returns whether op has type Rel.

func IsVM32X 

func IsVM32X(op Op) bool

IsVM32X returns true if op is a vector memory operand with 32-bit XMM index.

func IsVM32Y 

func IsVM32Y(op Op) bool

IsVM32Y returns true if op is a vector memory operand with 32-bit YMM index.

func IsVM64X 

func IsVM64X(op Op) bool

IsVM64X returns true if op is a vector memory operand with 64-bit XMM index.

func IsVM64Y 

func IsVM64Y(op Op) bool

IsVM64Y returns true if op is a vector memory operand with 64-bit YMM index.

func IsVmx 

func IsVmx(op Op) bool

IsVmx returns true if op is a vector memory operand with XMM index.

func IsVmy 

func IsVmy(op Op) bool

IsVmy returns true if op is a vector memory operand with YMM index.

func IsXMM 

func IsXMM(op Op) bool

IsXMM returns true if op is a 128-bit XMM register.

func IsXMM0 

func IsXMM0(op Op) bool

IsXMM0 returns true if op is the X0 register.

func IsYMM 

func IsYMM(op Op) bool

IsYMM returns true if op is a 256-bit YMM register.

func Registers 

func Registers(op Op) []reg.Register

Registers returns the list of all operands involved in the given operand.

Types

type Constant 

type Constant interface {
	Op
	Bytes() int
	// contains filtered or unexported methods
}

Constant represents a constant literal.

func Imm 

func Imm(x uint64) Constant

Imm returns an unsigned integer constant with size guessed from x.

type F32 

type F32 float32

F32 is a 32-bit floating point constant.

func (F32) Asm 

func (f F32) Asm() string

func (F32) Bytes 

func (f F32) Bytes() int

type F64 

type F64 float64

F64 is a 64-bit floating point constant.

func (F64) Asm 

func (f F64) Asm() string

func (F64) Bytes 

func (f F64) Bytes() int

type I16 

type I16 int16

I16 is a 16-bit signed integer constant.

func (I16) Asm 

func (i I16) Asm() string

func (I16) Bytes 

func (i I16) Bytes() int

type I32 

type I32 int32

I32 is a 32-bit signed integer constant.

func (I32) Asm 

func (i I32) Asm() string

func (I32) Bytes 

func (i I32) Bytes() int

type I64 

type I64 int64

I64 is a 64-bit signed integer constant.

func (I64) Asm 

func (i I64) Asm() string

func (I64) Bytes 

func (i I64) Bytes() int

type I8 

type I8 int8

I8 is a 8-bit signed integer constant.

func (I8) Asm 

func (i I8) Asm() string

func (I8) Bytes 

func (i I8) Bytes() int

type LabelRef 

type LabelRef string

LabelRef is a reference to a label.

func (LabelRef) Asm 

func (l LabelRef) Asm() string

Asm returns an assembly syntax representation of l.

type Mem 

type Mem struct {
	Symbol Symbol
	Disp   int
	Base   reg.Register
	Index  reg.Register
	Scale  uint8
}

Mem represents a memory reference.

func NewDataAddr 

func NewDataAddr(sym Symbol, offset int) Mem

NewDataAddr returns a memory reference relative to the named data symbol.

func NewParamAddr 

func NewParamAddr(name string, offset int) Mem

NewParamAddr is a convenience to build a Mem operand pointing to a function parameter, which is a named offset from the frame pointer pseudo register.

func NewStackAddr 

func NewStackAddr(offset int) Mem

NewStackAddr returns a memory reference relative to the stack pointer.

func (Mem) Asm 

func (m Mem) Asm() string

Asm returns an assembly syntax representation of m.

func (Mem) Idx 

func (m Mem) Idx(r reg.Register, s uint8) Mem

Idx returns a new memory reference with (Index, Scale) set to (r, s).

func (Mem) Offset 

func (m Mem) Offset(idx int) Mem

Offset returns a reference to m plus idx bytes.

type Op 

type Op interface {
	Asm() string
}

Op is an operand.

func ApplyAllocation 

func ApplyAllocation(op Op, a reg.Allocation) Op

ApplyAllocation returns an operand with allocated registers replaced. Registers missing from the allocation are left alone.

type Rel 

type Rel int32

Rel is an offset relative to the instruction pointer.

func (Rel) Asm 

func (r Rel) Asm() string

Asm returns an assembly syntax representation of r.

type String 

type String string

String is a string constant.

func (String) Asm 

func (s String) Asm() string

Asm returns an assembly syntax representation of the string s.

func (String) Bytes 

func (s String) Bytes() int

Bytes returns the length of s.

type Symbol 

type Symbol struct {
	Name   string
	Static bool // only visible in current source file
}

Symbol represents a symbol name.

func NewStaticSymbol 

func NewStaticSymbol(name string) Symbol

NewStaticSymbol builds a static Symbol. Static symbols are only visible in the current source file.

func (Symbol) String 

func (s Symbol) String() string

type U16 

type U16 uint16

U16 is a 16-bit unsigned integer constant.

func (U16) Asm 

func (u U16) Asm() string

func (U16) Bytes 

func (u U16) Bytes() int

type U32 

type U32 uint32

U32 is a 32-bit unsigned integer constant.

func (U32) Asm 

func (u U32) Asm() string

func (U32) Bytes 

func (u U32) Bytes() int

type U64 

type U64 uint64

U64 is a 64-bit unsigned integer constant.

func (U64) Asm 

func (u U64) Asm() string

func (U64) Bytes 

func (u U64) Bytes() int

type U8 

type U8 uint8

U8 is a 8-bit unsigned integer constant.

func (U8) Asm 

func (u U8) Asm() string

func (U8) Bytes 

func (u U8) Bytes() int

Source Files

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