def compile(self):
emit.comment("system code")
emit.RM("LDC", SP, 0, 0)
emit.RM("LDA", 1, 2, PC)
emit.RM("ST", 1, 1+_table.nargs("main"), SP)
self.mainLabel.produce(
lambda origin, target:
emit.RMAbs("LDA", PC, target, "jump to main", origin)
)
emit.skip()
emit.RM("LD", 1, 0, SP)
emit.RO("OUT", 1, 0,0)
emit.RO("HALT", 0,0,0, "done.")
emit.comment("print function")
self.printLabel.compile()
emit.RM("LD", 1, 1, SP)
emit.RM("LDA", 2, 2, SP)
emit.RM("LD", 3, 0, 2)
emit.RO("OUT", 3, 0, 0)
emit.RM("LDA", 2, 1, 2)
emit.RM("LDA", 1, -1, 1)
emit.RM("JNE", 1, -5, 7)
emit.RM("LD", 1, 1, SP)
emit.RO("ADD", 1, 1, SP)
emit.RM("LD", 7, 2, 1)
emit.comment("program code")
def compile(self):
condr = _registers.need(self.cond)
self.label.produce(
lambda origin, target:
emit.RMAbs("JNE", condr, target, repr(self), origin)
)
emit.skip()
_registers.freeReg(condr)
def compile(self):
RAoffset = _stack.push(0)
# calling sequence, before call
emit.RM("LDA", _targetr, 3, PC, repr(self))
emit.RM("ST", _targetr, RAoffset, SP)
emit.RM("LDA", SP, _nextFrame, SP)
self.label.produce(
lambda origin, target:
emit.RMAbs("LDA", PC, target, None, origin)
)
emit.skip()
# calling sequence, after call
emit.RM("LD", _targetr, 0, SP)
emit.RM("LDA", SP, -_nextFrame, SP)
def compile(self):
self.label.produce(
lambda origin, target:
emit.RMAbs("LDA", PC, target, repr(self), origin)
)
emit.skip()