misc/subcoding
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Bitwise operators

Browse Source
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
Download Patch File Download Diff File Expand all files Collapse all files

41
vm/opcode.go
View File

@@ -19,43 +19,48 @@ const (
OpDivideSigned = 0x00000204
OpDivS = OpDivideSigned
OpIsEqual = 0x00000300
OpNot = 0x00000300
OpAnd = 0x00000301
OpOr = 0x00000302
OpXor = 0x00000303
OpIsEqual = 0x00000400
OpEq = OpIsEqual
OpIsLessThanUnsigned = 0x00000301
OpIsLessThanUnsigned = 0x00000401
OpLTU = OpIsLessThanUnsigned
OpIsLessThanSigned = 0x00000302
OpIsLessThanSigned = 0x00000402
OpLTS = OpIsLessThanSigned
OpIsGreaterThanUnsigned = 0x00000303
OpIsGreaterThanUnsigned = 0x00000403
OpGTU = OpIsGreaterThanUnsigned
OpIsGreaterThanSigned = 0x00000304
OpIsGreaterThanSigned = 0x00000404
OpGTS = OpIsGreaterThanSigned
OpIsLessThanOrEqualUnsigned = 0x00000305
OpIsLessThanOrEqualUnsigned = 0x00000405
OpLTEU = OpIsLessThanOrEqualUnsigned
OpIsLessThanOrEqualSigned = 0x00000306
OpIsLessThanOrEqualSigned = 0x00000406
OpLTES = OpIsLessThanOrEqualSigned
OpIsGreaterThanOrEqualUnsigned = 0x00000307
OpIsGreaterThanOrEqualUnsigned = 0x00000407
OpGTEU = OpIsGreaterThanOrEqualUnsigned
OpIsGreaterThanOrEqualSigned = 0x00000308
OpIsGreaterThanOrEqualSigned = 0x00000408
OpGTES = OpIsGreaterThanOrEqualSigned
OpJump = 0x00000400
OpJump = 0x00000500
OpJmp = OpJump
OpJumpIfTrue = 0x00000401
OpJumpIfTrue = 0x00000501
OpJmpT = OpJumpIfTrue
OpJumpIfFalse = 0x00000402
OpJumpIfFalse = 0x00000502
OpJmpF = OpJumpIfFalse
OpCall = 0x00000500
OpCall = 0x00000600
OpCal = OpCall
OpCallIfTrue = 0x00000501
OpCallIfTrue = 0x00000601
OpCalT = OpCallIfTrue
OpCallIfFalse = 0x00000502
OpCallIfFalse = 0x00000602
OpCalF = OpCallIfFalse
OpReturn = 0x00000600
OpReturn = 0x00000700
OpRet = OpReturn
OpReturnIfTrue = 0x00000601
OpReturnIfTrue = 0x00000701
OpRetT = OpReturnIfTrue
OpReturnIfFalse = 0x00000602
OpReturnIfFalse = 0x00000702
OpRetF = OpReturnIfFalse
)

28
vm/ophandler.go
View File

@@ -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)