package instruction
import "github.com/open-policy-agent/opa/internal/wasm/instruction"
Package instruction defines WASM instruction types.
Index ¶
- type Block
- func (i Block) BlockType() *types.ValueType
- func (i Block) Instructions() []Instruction
- func (Block) Op() opcode.Opcode
- type Br
- type BrIf
- type Call
- type CallIndirect
- type Drop
- type End
- type F32Add
- type F32Const
- type F64Add
- type F64Const
- type GetLocal
- type I32Add
- type I32Const
- type I32Eq
- type I32Eqz
- type I32GeS
- type I32GtS
- type I32LeS
- type I32Load
- type I32LtS
- type I32Mul
- type I32Ne
- type I32Store
- type I32Sub
- type I64Add
- type I64Const
- type If
- func (i If) BlockType() *types.ValueType
- func (i If) Instructions() []Instruction
- func (If) Op() opcode.Opcode
- type Instruction
- type Loop
- func (i Loop) BlockType() *types.ValueType
- func (i Loop) Instructions() []Instruction
- func (Loop) Op() opcode.Opcode
- type NoImmediateArgs
- type Nop
- type Return
- type Select
- type SetLocal
- type StructuredInstruction
- type TeeLocal
- type Unreachable
Types ¶
type Block ¶
type Block struct {
NoImmediateArgs
Type *types.ValueType
Instrs []Instruction
}
Block represents a WASM block instruction.
func (Block) BlockType ¶
BlockType returns the type of the block's return value.
func (Block) Instructions ¶
func (i Block) Instructions() []Instruction
Instructions returns the instructions contained in the block.
func (Block) Op ¶
Op returns the opcode of the instruction
type Br ¶
type Br struct {
Index uint32
}
Br represents a WASM br instruction.
func (Br) ImmediateArgs ¶
func (i Br) ImmediateArgs() []interface{}
ImmediateArgs returns the block index to break to.
func (Br) Op ¶
Op returns the opcode of the instruction.
type BrIf ¶
type BrIf struct {
Index uint32
}
BrIf represents a WASM br_if instruction.
func (BrIf) ImmediateArgs ¶
func (i BrIf) ImmediateArgs() []interface{}
ImmediateArgs returns the block index to break to.
func (BrIf) Op ¶
Op returns the opcode of the instruction.
type Call ¶
type Call struct {
Index uint32
}
Call represents a WASM call instruction.
func (Call) ImmediateArgs ¶
func (i Call) ImmediateArgs() []interface{}
ImmediateArgs returns the function index.
func (Call) Op ¶
Op returns the opcode of the instruction.
type CallIndirect ¶
CallIndirect represents a WASM call_indirect instruction.
func (CallIndirect) ImmediateArgs ¶
func (i CallIndirect) ImmediateArgs() []interface{}
ImmediateArgs returns the function index.
func (CallIndirect) Op ¶
func (CallIndirect) Op() opcode.Opcode
Op returns the opcode of the instruction.
type Drop ¶
type Drop struct {
NoImmediateArgs
}
Drop reprsents a WASM drop instruction.
func (Drop) Op ¶
Op returns the opcode of the instruction.
type End ¶
type End struct {
NoImmediateArgs
}
End represents the special WASM end instruction.
func (End) Op ¶
Op returns the opcode of the instruction.
type F32Add ¶
type F32Add struct {
NoImmediateArgs
}
F32Add represents the WASM f32.add instruction.
func (F32Add) Op ¶
Op returns the opcode of the instruction.
type F32Const ¶
type F32Const struct {
Value int32
}
F32Const represents the WASM f32.const instruction.
func (F32Const) ImmediateArgs ¶
func (i F32Const) ImmediateArgs() []interface{}
ImmediateArgs returns the f32 value to push onto the stack.
func (F32Const) Op ¶
Op returns the opcode of the instruction.
type F64Add ¶
type F64Add struct {
NoImmediateArgs
}
F64Add represents the WASM f64.add instruction.
func (F64Add) Op ¶
Op returns the opcode of the instruction.
type F64Const ¶
type F64Const struct {
Value float64
}
F64Const represents the WASM f64.const instruction.
func (F64Const) ImmediateArgs ¶
func (i F64Const) ImmediateArgs() []interface{}
ImmediateArgs returns the f64 value to push onto the stack.
func (F64Const) Op ¶
Op returns the opcode of the instruction.
type GetLocal ¶
type GetLocal struct {
Index uint32
}
GetLocal represents the WASM get_local instruction.
func (GetLocal) ImmediateArgs ¶
func (i GetLocal) ImmediateArgs() []interface{}
ImmediateArgs returns the index of the local variable to push onto the stack.
func (GetLocal) Op ¶
Op returns the opcode of the instruction.
type I32Add ¶
type I32Add struct {
NoImmediateArgs
}
I32Add represents the WASM i32.add instruction.
func (I32Add) Op ¶
Op returns the opcode of the instruction.
type I32Const ¶
type I32Const struct {
Value int32
}
I32Const represents the WASM i32.const instruction.
func (I32Const) ImmediateArgs ¶
func (i I32Const) ImmediateArgs() []interface{}
ImmediateArgs returns the i32 value to push onto the stack.
func (I32Const) Op ¶
Op returns the opcode of the instruction.
type I32Eq ¶
type I32Eq struct {
NoImmediateArgs
}
I32Eq represents the WASM i32.eq instruction.
func (I32Eq) Op ¶
Op returns the opcode of the instruction.
type I32Eqz ¶
type I32Eqz struct {
NoImmediateArgs
}
I32Eqz represents the WASM i32.eqz instruction.
func (I32Eqz) Op ¶
Op returns the opcode of the instruction.
type I32GeS ¶
type I32GeS struct {
NoImmediateArgs
}
I32GeS represents the WASM i32.ge_s instruction.
func (I32GeS) Op ¶
Op returns the opcode of the instruction.
type I32GtS ¶
type I32GtS struct {
NoImmediateArgs
}
I32GtS represents the WASM i32.gt_s instruction.
func (I32GtS) Op ¶
Op returns the opcode of the instruction.
type I32LeS ¶
type I32LeS struct {
NoImmediateArgs
}
I32LeS represents the WASM i32.le_s instruction.
func (I32LeS) Op ¶
Op returns the opcode of the instruction.
type I32Load ¶
I32Load represents the WASM i32.load instruction.
func (I32Load) ImmediateArgs ¶
func (i I32Load) ImmediateArgs() []interface{}
ImmediateArgs returns the static offset and alignment operands.
func (I32Load) Op ¶
Op returns the opcode of the instruction.
type I32LtS ¶
type I32LtS struct {
NoImmediateArgs
}
I32LtS represents the WASM i32.lt_s instruction.
func (I32LtS) Op ¶
Op returns the opcode of the instruction.
type I32Mul ¶
type I32Mul struct {
NoImmediateArgs
}
I32Mul represents the WASM i32.mul instruction.
func (I32Mul) Op ¶
Op returns the opcode of the instruction.
type I32Ne ¶
type I32Ne struct {
NoImmediateArgs
}
I32Ne represents the WASM i32.ne instruction.
func (I32Ne) Op ¶
Op returns the opcode of the instruction.
type I32Store ¶
I32Store represents the WASM i32.store instruction.
func (I32Store) ImmediateArgs ¶
func (i I32Store) ImmediateArgs() []interface{}
ImmediateArgs returns the static offset and alignment operands.
func (I32Store) Op ¶
Op returns the opcode of the instruction.
type I32Sub ¶
type I32Sub struct {
NoImmediateArgs
}
I32Sub represents the WASM i32.sub instruction.
func (I32Sub) Op ¶
Op returns the opcode of the instruction.
type I64Add ¶
type I64Add struct {
NoImmediateArgs
}
I64Add represents the WASM i64.add instruction.
func (I64Add) Op ¶
Op returns the opcode of the instruction.
type I64Const ¶
type I64Const struct {
Value int64
}
I64Const represents the WASM i64.const instruction.
func (I64Const) ImmediateArgs ¶
func (i I64Const) ImmediateArgs() []interface{}
ImmediateArgs returns the i64 value to push onto the stack.
func (I64Const) Op ¶
Op returns the opcode of the instruction.
type If ¶
type If struct {
NoImmediateArgs
Type *types.ValueType
Instrs []Instruction
}
If represents a WASM if instruction. NOTE(sr): we only use if with one branch so far!
func (If) BlockType ¶
BlockType returns the type of the if's THEN branch.
func (If) Instructions ¶
func (i If) Instructions() []Instruction
Instructions represents the instructions contained in the if's THEN branch.
func (If) Op ¶
Op returns the opcode of the instruction.
type Instruction ¶
Instruction represents a single WASM instruction.
type Loop ¶
type Loop struct {
NoImmediateArgs
Type *types.ValueType
Instrs []Instruction
}
Loop represents a WASM loop instruction.
func (Loop) BlockType ¶
BlockType returns the type of the loop's return value.
func (Loop) Instructions ¶
func (i Loop) Instructions() []Instruction
Instructions represents the instructions contained in the loop.
func (Loop) Op ¶
Op returns the opcode of the instruction.
type NoImmediateArgs ¶
type NoImmediateArgs struct {
}
NoImmediateArgs indicates the instruction has no immediate arguments.
func (NoImmediateArgs) ImmediateArgs ¶
func (NoImmediateArgs) ImmediateArgs() []interface{}
ImmediateArgs returns the immedate arguments of an instruction.
type Nop ¶
type Nop struct {
NoImmediateArgs
}
Nop represents a WASM no-op instruction.
func (Nop) Op ¶
Op returns the opcode of the instruction.
type Return ¶
type Return struct {
NoImmediateArgs
}
Return represents a WASM return instruction.
func (Return) Op ¶
Op returns the opcode of the instruction.
type Select ¶
type Select struct {
NoImmediateArgs
}
Select reprsents a WASM select instruction.
func (Select) Op ¶
Op returns the opcode of the instruction.
type SetLocal ¶
type SetLocal struct {
Index uint32
}
SetLocal represents the WASM set_local instruction.
func (SetLocal) ImmediateArgs ¶
func (i SetLocal) ImmediateArgs() []interface{}
ImmediateArgs returns the index of the local variable to set with the top of the stack.
func (SetLocal) Op ¶
Op returns the opcode of the instruction.
type StructuredInstruction ¶
type StructuredInstruction interface {
Instruction
BlockType() *types.ValueType
Instructions() []Instruction
}
StructuredInstruction represents a structured control instruction like br_if.
type TeeLocal ¶
type TeeLocal struct {
Index uint32
}
TeeLocal represents the WASM tee_local instruction.
func (TeeLocal) ImmediateArgs ¶
func (i TeeLocal) ImmediateArgs() []interface{}
ImmediateArgs returns the index of the local variable to "tee" with the top of the stack (like set, but retaining the top of the stack).
func (TeeLocal) Op ¶
Op returns the opcode of the instruction.
type Unreachable ¶
type Unreachable struct {
NoImmediateArgs
}
Unreachable represents a WASM unreachable instruction.
func (Unreachable) Op ¶
func (Unreachable) Op() opcode.Opcode
Op returns the opcode of the instruction.
Source Files ¶
control.go instruction.go memory.go numeric.go parametric.go variable.go
- Version
- v1.4.2 (latest)
- Published
- May 2, 2025
- Platform
- linux/amd64
- Imports
- 2 packages
- Last checked
- 6 hours ago –
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