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Bitwise operators

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This commit is contained in:
Ian Gulliver
2021-11-19 16:43:59 -10:00
parent 50f986fb13
commit cc8e4a8ccb
4 changed files with 102 additions and 18 deletions
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28
vm/ophandler.go
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@@ -13,6 +13,11 @@ var opHandlers = map[OpCodeType]opHandler{
OpDivideUnsigned: (*State).handleDivideUnsigned,
OpDivideSigned: (*State).handleDivideSigned,
OpNot: (*State).handleNot,
OpAnd: (*State).handleAnd,
OpOr: (*State).handleOr,
OpXor: (*State).handleXor,
OpIsEqual: (*State).handleIsEqual,
OpIsLessThanUnsigned: (*State).handleIsLessThanUnsigned,
OpIsLessThanSigned: (*State).handleIsLessThanSigned,
@@ -74,6 +79,29 @@ func (state *State) handleDivideSigned(instr *Instruction) {
state.writeSigned(&instr.Operand1, in1/in2)
}
func (state *State) handleNot(instr *Instruction) {
in := state.readUnsigned(&instr.Operand1)
state.writeUnsigned(&instr.Operand1, in^uint64(0xffffffffffffffff))
}
func (state *State) handleAnd(instr *Instruction) {
in1 := state.readUnsigned(&instr.Operand1)
in2 := state.readUnsigned(&instr.Operand2)
state.writeUnsigned(&instr.Operand1, in1&in2)
}
func (state *State) handleOr(instr *Instruction) {
in1 := state.readUnsigned(&instr.Operand1)
in2 := state.readUnsigned(&instr.Operand2)
state.writeUnsigned(&instr.Operand1, in1|in2)
}
func (state *State) handleXor(instr *Instruction) {
in1 := state.readUnsigned(&instr.Operand1)
in2 := state.readUnsigned(&instr.Operand2)
state.writeUnsigned(&instr.Operand1, in1^in2)
}
func (state *State) handleIsEqual(instr *Instruction) {
in1 := state.readUnsigned(&instr.Operand1)
in2 := state.readUnsigned(&instr.Operand2)