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comparison python/msp430.py @ 200:5e391d9a3381

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Split off asm nodes
author Windel Bouwman
date Sun, 09 Jun 2013 16:06:49 +0200
parents a690473b79e2
children d5debbfc0200
comparison
equal deleted inserted replaced
199:a690473b79e2 200:5e391d9a3381
5 class MSP430Reg(Register): 5 class MSP430Reg(Register):
6 def __init__(self, num, name): 6 def __init__(self, num, name):
7 super().__init__(name) 7 super().__init__(name)
8 self.num = num 8 self.num = num
9 9
10 # 8 bit variants: 10 # 8 bit registers:
11 PCB = MSP430Reg(0, 'r0') 11 PCB = MSP430Reg(0, 'r0')
12 R14B = MSP430Reg(14, 'r14') 12 r13 = MSP430Reg(13, 'r13')
13 R15B = MSP430Reg(15, 'r15') 13 r14 = MSP430Reg(14, 'r14')
14 r15 = MSP430Reg(15, 'r15')
14 15
15 # .. etc 16 # .. etc
16 17
17 #GR8 = RegisterClass((PCB, R15B)) 18 #GR8 = RegisterClass((PCB, R15B))
18 19
20 # Two operand arithmatic instructions:
21
19 class TwoOpArith(Instruction): 22 class TwoOpArith(Instruction):
20 def __init__(self, opc, name): 23 operands = (MSP430Reg, MSP430Reg)
21 super().__init__(opc) 24 def __init__(self, op1, op2):
22 self.name = name 25 self.op1 = op1
26 self.op2 = op2
27 def encode(self):
28 # TODO:
29 b1 = (self.opcode << 4)
30 b2 = 0
31 ba = bytearray([b1, b2])
32 return bytes(ba)
23 33
24 mov_ins = TwoOpArith(4, 'mov') 34 class mov_ins(TwoOpArith):
25 add_ins = TwoOpArith(5, 'add') 35 # class variables:
36 mnemonic = 'mov'
37 opcode = 4
38
39 class add_ins(TwoOpArith):
40 mnemonic = 'add'
41 opcode = 5
26 42
27 class MSP430(Target): 43 class MSP430(Target):
28 def __init__(self): 44 def __init__(self):
29 self.registers = [PCB, R14B, R15B] 45 self.registers = [PCB, r13, r14, r15]
30 self.instructions = [mov_ins, add_ins] 46 self.instructions = [mov_ins, add_ins]
31 47
48 t = MSP430()
32 49