mirror of
https://github.com/catseye/SixtyPical.git
synced 2024-07-01 18:29:34 +00:00
84 lines
2.3 KiB
Python
84 lines
2.3 KiB
Python
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# encoding: UTF-8
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from sixtypical.ast import Program, Routine, Block, Instr
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from sixtypical.model import (
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ConstantRef, LocationRef,
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REG_A, REG_X, REG_Y, FLAG_Z, FLAG_N, FLAG_V, FLAG_C
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)
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from sixtypical.gen6502 import Generator
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def compile_program(program):
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assert isinstance(program, Program)
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generator = Generator(49152)
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routines = {r.name: r for r in program.routines}
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for routine in program.routines:
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compile_routine(routine, generator, routines)
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def compile_routine(routine, generator, routines):
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assert isinstance(routine, Routine)
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label = generator.emitter.make_label(routine.name)
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compile_block(routine.block, generator, routines)
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return label
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def compile_block(block, generator, routines):
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assert isinstance(block, Block)
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label = generator.emitter.make_label()
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for instr in block.instrs:
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compile_instr(instr, generator, routines)
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return label
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def compile_instr(instr, generator, routines):
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assert isinstance(instr, Instr)
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opcode = instr.opcode
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dest = instr.dest
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src = instr.src
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if opcode == 'ld':
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if dest == REG_A:
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if isinstance(src, ConstantRef):
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# LDA #...
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pass
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elif:
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# LDA abs
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pass
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elif dest == REG_X:
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elif dest == REG_Y:
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else:
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raise KeyError
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elif opcode == 'st':
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if src == REG_A:
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# assert isinstance(dest, MemoryRef)
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# generate STA
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else:
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raise KeyError
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elif opcode == 'add':
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raise NotImplementedError
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elif opcode == 'sub':
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raise NotImplementedError
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elif opcode == 'inc':
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raise NotImplementedError
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elif opcode == 'dec':
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raise NotImplementedError
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elif opcode == 'cmp':
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raise NotImplementedError
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elif opcode == 'and':
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raise NotImplementedError
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elif opcode == 'or':
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raise NotImplementedError
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elif opcode == 'xor':
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raise NotImplementedError
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elif opcode == 'shl':
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raise NotImplementedError
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elif opcode == 'shr':
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raise NotImplementedError
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elif opcode == 'call':
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raise NotImplementedError
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elif opcode == 'if':
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raise NotImplementedError
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else:
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raise NotImplementedError
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