CPunch/LuaDecompy
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lp: added support for OP_TEST

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CPunch 2022-08-26 01:18:24 -05:00
parent 935844f274
commit a22aa808e0
1 changed files with 17 additions and 5 deletions
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20
lparser.py
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@ -231,7 +231,8 @@ class LuaDecomp:
def __emitOperand(self, a: int, b: str, c: str, op: str) -> None: def __emitOperand(self, a: int, b: str, c: str, op: str) -> None:
self.__setReg(a, "(" + b + op + c + ")") self.__setReg(a, "(" + b + op + c + ")")
def __compJmp(self, op: str): # handles conditional jumps
def __condJmp(self, op: str, rkBC: bool = True):
instr = self.__getCurrInstr() instr = self.__getCurrInstr()
jmpType = "if" jmpType = "if"
scopeStart = "then" scopeStart = "then"
@ -254,7 +255,13 @@ class LuaDecomp:
self.__addExpr("%s not " % jmpType) self.__addExpr("%s not " % jmpType)
else: else:
self.__addExpr("%s " % jmpType) self.__addExpr("%s " % jmpType)
# write actual comparison
if rkBC:
self.__addExpr(self.__readRK(instr.B) + op + self.__readRK(instr.C) + " ") self.__addExpr(self.__readRK(instr.B) + op + self.__readRK(instr.C) + " ")
else: # just testing rkB
self.__addExpr(op + self.__readRK(instr.B))
self.pc += 1 # skip next instr self.pc += 1 # skip next instr
if scopeStart: if scopeStart:
self.__startScope("%s " % scopeStart, self.pc - 1, jmp) self.__startScope("%s " % scopeStart, self.pc - 1, jmp)
@ -368,11 +375,16 @@ class LuaDecomp:
elif instr.opcode == Opcodes.JMP: elif instr.opcode == Opcodes.JMP:
pass pass
elif instr.opcode == Opcodes.EQ: elif instr.opcode == Opcodes.EQ:
self.__compJmp(" == ") self.__condJmp(" == ")
elif instr.opcode == Opcodes.LT: elif instr.opcode == Opcodes.LT:
self.__compJmp(" < ") self.__condJmp(" < ")
elif instr.opcode == Opcodes.LE: elif instr.opcode == Opcodes.LE:
self.__compJmp(" <= ") self.__condJmp(" <= ")
elif instr.opcode == Opcodes.TEST:
if instr.C == 0:
self.__condJmp("", False)
else:
self.__condJmp("not ", False)
elif instr.opcode == Opcodes.CALL: elif instr.opcode == Opcodes.CALL:
preStr = "" preStr = ""
callStr = "" callStr = ""