operators

package
v0.4.2 Latest Latest
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 Go to latest Published: Feb 13, 2020 License: BSD-3-Clause Imports: 3 Imported by: 0

Documentation

Overview

Package operators provides all operators used by WebAssembly bytecode, together with their parameter and return type(s).

Index

Constants

This section is empty.

Variables

View Source 
var (
	Call         = newPolymorphicOp(0x10, "call")
	CallIndirect = newPolymorphicOp(0x11, "call_indirect")
)
View Source 
var (
	I32Eqz = newOp(0x45, "i32.eqz", []wasm.ValueType{wasm.ValueTypeI32}, wasm.ValueTypeI32)
	I32Eq  = newOp(0x46, "i32.eq", []wasm.ValueType{wasm.ValueTypeI32, wasm.ValueTypeI32}, wasm.ValueTypeI32)
	I32Ne  = newOp(0x47, "i32.ne", []wasm.ValueType{wasm.ValueTypeI32, wasm.ValueTypeI32}, wasm.ValueTypeI32)
	I32LtS = newOp(0x48, "i32.lt_s", []wasm.ValueType{wasm.ValueTypeI32, wasm.ValueTypeI32}, wasm.ValueTypeI32)
	I32LtU = newOp(0x49, "i32.lt_u", []wasm.ValueType{wasm.ValueTypeI32, wasm.ValueTypeI32}, wasm.ValueTypeI32)
	I32GtS = newOp(0x4a, "i32.gt_s", []wasm.ValueType{wasm.ValueTypeI32, wasm.ValueTypeI32}, wasm.ValueTypeI32)
	I32GtU = newOp(0x4b, "i32.gt_u", []wasm.ValueType{wasm.ValueTypeI32, wasm.ValueTypeI32}, wasm.ValueTypeI32)
	I32LeS = newOp(0x4c, "i32.le_s", []wasm.ValueType{wasm.ValueTypeI32, wasm.ValueTypeI32}, wasm.ValueTypeI32)
	I32LeU = newOp(0x4d, "i32.le_u", []wasm.ValueType{wasm.ValueTypeI32, wasm.ValueTypeI32}, wasm.ValueTypeI32)
	I32GeS = newOp(0x4e, "i32.ge_s", []wasm.ValueType{wasm.ValueTypeI32, wasm.ValueTypeI32}, wasm.ValueTypeI32)
	I32GeU = newOp(0x4f, "i32.ge_u", []wasm.ValueType{wasm.ValueTypeI32, wasm.ValueTypeI32}, wasm.ValueTypeI32)
	I64Eqz = newOp(0x50, "i64.eqz", []wasm.ValueType{wasm.ValueTypeI64}, wasm.ValueTypeI32)
	I64Eq  = newOp(0x51, "i64.eq", []wasm.ValueType{wasm.ValueTypeI64, wasm.ValueTypeI64}, wasm.ValueTypeI32)
	I64Ne  = newOp(0x52, "i64.ne", []wasm.ValueType{wasm.ValueTypeI64, wasm.ValueTypeI64}, wasm.ValueTypeI32)
	I64LtS = newOp(0x53, "i64.lt_s", []wasm.ValueType{wasm.ValueTypeI64, wasm.ValueTypeI64}, wasm.ValueTypeI32)
	I64LtU = newOp(0x54, "i64.lt_u", []wasm.ValueType{wasm.ValueTypeI64, wasm.ValueTypeI64}, wasm.ValueTypeI32)
	I64GtS = newOp(0x55, "i64.gt_s", []wasm.ValueType{wasm.ValueTypeI64, wasm.ValueTypeI64}, wasm.ValueTypeI32)
	I64GtU = newOp(0x56, "i64.gt_u", []wasm.ValueType{wasm.ValueTypeI64, wasm.ValueTypeI64}, wasm.ValueTypeI32)
	I64LeS = newOp(0x57, "i64.le_s", []wasm.ValueType{wasm.ValueTypeI64, wasm.ValueTypeI64}, wasm.ValueTypeI32)
	I64LeU = newOp(0x58, "i64.le_u", []wasm.ValueType{wasm.ValueTypeI64, wasm.ValueTypeI64}, wasm.ValueTypeI32)
	I64GeS = newOp(0x59, "i64.ge_s", []wasm.ValueType{wasm.ValueTypeI64, wasm.ValueTypeI64}, wasm.ValueTypeI32)
	I64GeU = newOp(0x5a, "i64.ge_u", []wasm.ValueType{wasm.ValueTypeI64, wasm.ValueTypeI64}, wasm.ValueTypeI32)
)
View Source 
var (
	I32Const = newOp(0x41, "i32.const", nil, wasm.ValueTypeI32)
	I64Const = newOp(0x42, "i64.const", nil, wasm.ValueTypeI64)
)
View Source 
var (
	Unreachable = newOp(0x00, "unreachable", nil, noReturn)
	Nop         = newOp(0x01, "nop", nil, noReturn)
	Block       = newOp(0x02, "block", nil, noReturn)
	Loop        = newOp(0x03, "loop", nil, noReturn)
	If          = newOp(0x04, "if", []wasm.ValueType{wasm.ValueTypeI32}, noReturn)
	Else        = newOp(0x05, "else", nil, noReturn)
	End         = newOp(0x0b, "end", nil, noReturn)
	Br          = newPolymorphicOp(0x0c, "br")
	BrIf        = newOp(0x0d, "br_if", []wasm.ValueType{wasm.ValueTypeI32}, noReturn)
	BrTable     = newPolymorphicOp(0x0e, "br_table")
	Return      = newPolymorphicOp(0x0f, "return")
)
View Source 
var (
	I32WrapI64 = newConversionOp(0xa7, "i32.wrap/i64")
	//I32TruncSF32  = newConversionOp(0xa8, "i32.trunc_s/f32")
	//I32TruncUF32  = newConversionOp(0xa9, "i32.trunc_u/f32")
	//I32TruncSF64  = newConversionOp(0xaa, "i32.trunc_s/f64")
	//I32TruncUF64  = newConversionOp(0xab, "i32.trunc_u/f64")
	I64ExtendSI32 = newConversionOp(0xac, "i64.extend_s/i32")
	I64ExtendUI32 = newConversionOp(0xad, "i64.extend_u/i32")
)
View Source 
var (
	I32Load = newOp(0x28, "i32.load", []wasm.ValueType{wasm.ValueTypeI32}, wasm.ValueTypeI32)
	I64Load = newOp(0x29, "i64.load", []wasm.ValueType{wasm.ValueTypeI32}, wasm.ValueTypeI64)
	//F32Load    = newOp(0x2a, "f32.load", []wasm.ValueType{wasm.ValueTypeI32}, wasm.ValueTypeF32)
	//F64Load    = newOp(0x2b, "f64.load", []wasm.ValueType{wasm.ValueTypeI32}, wasm.ValueTypeF64)
	I32Load8s  = newOp(0x2c, "i32.load8_s", []wasm.ValueType{wasm.ValueTypeI32}, wasm.ValueTypeI32)
	I32Load8u  = newOp(0x2d, "i32.load8_u", []wasm.ValueType{wasm.ValueTypeI32}, wasm.ValueTypeI32)
	I32Load16s = newOp(0x2e, "i32.load16_s", []wasm.ValueType{wasm.ValueTypeI32}, wasm.ValueTypeI32)
	I32Load16u = newOp(0x2f, "i32.load16_u", []wasm.ValueType{wasm.ValueTypeI32}, wasm.ValueTypeI32)
	I64Load8s  = newOp(0x30, "i64.load8_s", []wasm.ValueType{wasm.ValueTypeI32}, wasm.ValueTypeI64)
	I64Load8u  = newOp(0x31, "i64.load8_u", []wasm.ValueType{wasm.ValueTypeI32}, wasm.ValueTypeI64)
	I64Load16s = newOp(0x32, "i64.load16_s", []wasm.ValueType{wasm.ValueTypeI32}, wasm.ValueTypeI64)
	I64Load16u = newOp(0x33, "i64.load16_u", []wasm.ValueType{wasm.ValueTypeI32}, wasm.ValueTypeI64)
	I64Load32s = newOp(0x34, "i64.load32_s", []wasm.ValueType{wasm.ValueTypeI32}, wasm.ValueTypeI64)
	I64Load32u = newOp(0x35, "i64.load32_u", []wasm.ValueType{wasm.ValueTypeI32}, wasm.ValueTypeI64)

	I32Store = newOp(0x36, "i32.store", []wasm.ValueType{wasm.ValueTypeI32, wasm.ValueTypeI32}, noReturn)
	I64Store = newOp(0x37, "i64.store", []wasm.ValueType{wasm.ValueTypeI64, wasm.ValueTypeI32}, noReturn)
	//F32Store   = newOp(0x38, "f32.store", []wasm.ValueType{wasm.ValueTypeF32, wasm.ValueTypeI32}, noReturn)
	//F64Store   = newOp(0x39, "f64.store", []wasm.ValueType{wasm.ValueTypeF64, wasm.ValueTypeI32}, noReturn)
	I32Store8  = newOp(0x3a, "i32.store8", []wasm.ValueType{wasm.ValueTypeI32, wasm.ValueTypeI32}, noReturn)
	I32Store16 = newOp(0x3b, "i32.store16", []wasm.ValueType{wasm.ValueTypeI32, wasm.ValueTypeI32}, noReturn)
	I64Store8  = newOp(0x3c, "i64.store8", []wasm.ValueType{wasm.ValueTypeI64, wasm.ValueTypeI32}, noReturn)
	I64Store16 = newOp(0x3d, "i64.store16", []wasm.ValueType{wasm.ValueTypeI64, wasm.ValueTypeI32}, noReturn)
	I64Store32 = newOp(0x3e, "i64.store32", []wasm.ValueType{wasm.ValueTypeI64, wasm.ValueTypeI32}, noReturn)

	CurrentMemory = newOp(0x3f, "memory.size", nil, wasm.ValueTypeI32)
	GrowMemory    = newOp(0x40, "memory.grow", []wasm.ValueType{wasm.ValueTypeI32}, wasm.ValueTypeI32)
)
View Source 
var (
	I32Clz    = newOp(0x67, "i32.clz", []wasm.ValueType{wasm.ValueTypeI32}, wasm.ValueTypeI32)
	I32Ctz    = newOp(0x68, "i32.ctz", []wasm.ValueType{wasm.ValueTypeI32}, wasm.ValueTypeI32)
	I32Popcnt = newOp(0x69, "i32.popcnt", []wasm.ValueType{wasm.ValueTypeI32}, wasm.ValueTypeI32)
	I32Add    = newOp(0x6a, "i32.add", []wasm.ValueType{wasm.ValueTypeI32, wasm.ValueTypeI32}, wasm.ValueTypeI32)
	I32Sub    = newOp(0x6b, "i32.sub", []wasm.ValueType{wasm.ValueTypeI32, wasm.ValueTypeI32}, wasm.ValueTypeI32)
	I32Mul    = newOp(0x6c, "i32.mul", []wasm.ValueType{wasm.ValueTypeI32, wasm.ValueTypeI32}, wasm.ValueTypeI32)
	I32DivS   = newOp(0x6d, "i32.div_s", []wasm.ValueType{wasm.ValueTypeI32, wasm.ValueTypeI32}, wasm.ValueTypeI32)
	I32DivU   = newOp(0x6e, "i32.div_u", []wasm.ValueType{wasm.ValueTypeI32, wasm.ValueTypeI32}, wasm.ValueTypeI32)
	I32RemS   = newOp(0x6f, "i32.rem_s", []wasm.ValueType{wasm.ValueTypeI32, wasm.ValueTypeI32}, wasm.ValueTypeI32)
	I32RemU   = newOp(0x70, "i32.rem_u", []wasm.ValueType{wasm.ValueTypeI32, wasm.ValueTypeI32}, wasm.ValueTypeI32)
	I32And    = newOp(0x71, "i32.and", []wasm.ValueType{wasm.ValueTypeI32, wasm.ValueTypeI32}, wasm.ValueTypeI32)
	I32Or     = newOp(0x72, "i32.or", []wasm.ValueType{wasm.ValueTypeI32, wasm.ValueTypeI32}, wasm.ValueTypeI32)
	I32Xor    = newOp(0x73, "i32.xor", []wasm.ValueType{wasm.ValueTypeI32, wasm.ValueTypeI32}, wasm.ValueTypeI32)
	I32Shl    = newOp(0x74, "i32.shl", []wasm.ValueType{wasm.ValueTypeI32, wasm.ValueTypeI32}, wasm.ValueTypeI32)
	I32ShrS   = newOp(0x75, "i32.shr_s", []wasm.ValueType{wasm.ValueTypeI32, wasm.ValueTypeI32}, wasm.ValueTypeI32)
	I32ShrU   = newOp(0x76, "i32.shr_u", []wasm.ValueType{wasm.ValueTypeI32, wasm.ValueTypeI32}, wasm.ValueTypeI32)
	I32Rotl   = newOp(0x77, "i32.rotl", []wasm.ValueType{wasm.ValueTypeI32, wasm.ValueTypeI32}, wasm.ValueTypeI32)
	I32Rotr   = newOp(0x78, "i32.rotr", []wasm.ValueType{wasm.ValueTypeI32, wasm.ValueTypeI32}, wasm.ValueTypeI32)
	I64Clz    = newOp(0x79, "i64.clz", []wasm.ValueType{wasm.ValueTypeI64}, wasm.ValueTypeI64)
	I64Ctz    = newOp(0x7a, "i64.ctz", []wasm.ValueType{wasm.ValueTypeI64}, wasm.ValueTypeI64)
	I64Popcnt = newOp(0x7b, "i64.popcnt", []wasm.ValueType{wasm.ValueTypeI64}, wasm.ValueTypeI64)
	I64Add    = newOp(0x7c, "i64.add", []wasm.ValueType{wasm.ValueTypeI64, wasm.ValueTypeI64}, wasm.ValueTypeI64)
	I64Sub    = newOp(0x7d, "i64.sub", []wasm.ValueType{wasm.ValueTypeI64, wasm.ValueTypeI64}, wasm.ValueTypeI64)
	I64Mul    = newOp(0x7e, "i64.mul", []wasm.ValueType{wasm.ValueTypeI64, wasm.ValueTypeI64}, wasm.ValueTypeI64)
	I64DivS   = newOp(0x7f, "i64.div_s", []wasm.ValueType{wasm.ValueTypeI64, wasm.ValueTypeI64}, wasm.ValueTypeI64)
	I64DivU   = newOp(0x80, "i64.div_u", []wasm.ValueType{wasm.ValueTypeI64, wasm.ValueTypeI64}, wasm.ValueTypeI64)
	I64RemS   = newOp(0x81, "i64.rem_s", []wasm.ValueType{wasm.ValueTypeI64, wasm.ValueTypeI64}, wasm.ValueTypeI64)
	I64RemU   = newOp(0x82, "i64.rem_u", []wasm.ValueType{wasm.ValueTypeI64, wasm.ValueTypeI64}, wasm.ValueTypeI64)
	I64And    = newOp(0x83, "i64.and", []wasm.ValueType{wasm.ValueTypeI64, wasm.ValueTypeI64}, wasm.ValueTypeI64)
	I64Or     = newOp(0x84, "i64.or", []wasm.ValueType{wasm.ValueTypeI64, wasm.ValueTypeI64}, wasm.ValueTypeI64)
	I64Xor    = newOp(0x85, "i64.xor", []wasm.ValueType{wasm.ValueTypeI64, wasm.ValueTypeI64}, wasm.ValueTypeI64)
	I64Shl    = newOp(0x86, "i64.shl", []wasm.ValueType{wasm.ValueTypeI64, wasm.ValueTypeI64}, wasm.ValueTypeI64)
	I64ShrS   = newOp(0x87, "i64.shr_s", []wasm.ValueType{wasm.ValueTypeI64, wasm.ValueTypeI64}, wasm.ValueTypeI64)
	I64ShrU   = newOp(0x88, "i64.shr_u", []wasm.ValueType{wasm.ValueTypeI64, wasm.ValueTypeI64}, wasm.ValueTypeI64)
	I64Rotl   = newOp(0x89, "i64.rotl", []wasm.ValueType{wasm.ValueTypeI64, wasm.ValueTypeI64}, wasm.ValueTypeI64)
	I64Rotr   = newOp(0x8a, "i64.rotr", []wasm.ValueType{wasm.ValueTypeI64, wasm.ValueTypeI64}, wasm.ValueTypeI64)
)
View Source 
var (
	Drop   = newPolymorphicOp(0x1a, "drop")
	Select = newPolymorphicOp(0x1b, "select")
)
View Source 
var (
	GetLocal  = newPolymorphicOp(0x20, "get_local")
	SetLocal  = newPolymorphicOp(0x21, "set_local")
	TeeLocal  = newPolymorphicOp(0x22, "tee_local")
	GetGlobal = newPolymorphicOp(0x23, "get_global")
	SetGlobal = newPolymorphicOp(0x24, "set_global")
)

Functions

This section is empty.

Types

type InvalidOpcodeError 

type InvalidOpcodeError byte

func (InvalidOpcodeError) Error 

func (e InvalidOpcodeError) Error() string

type Op 

type Op struct {
	Code byte   // The single-byte opcode
	Name string // The name of the operator

	// Whether this operator is polymorphic.
	// A polymorphic operator has a variable arity. call, call_indirect, and
	// drop are examples of polymorphic operators.
	Polymorphic bool
	Args        []wasm.ValueType // an array of value types used by the operator as arguments, is nil for polymorphic operators
	Returns     wasm.ValueType   // the value returned (pushed) by the operator, is 0 for polymorphic operators
}

Op describes a WASM operator.

func New 

func New(code byte) (Op, error)

New returns the Op object for a valid given opcode. If code is invalid, an ErrInvalidOpcode is returned.

func (Op) IsValid 

func (o Op) IsValid() bool

Source Files

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