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comparison python/ppci/target/arm/instructions.py @ 350:2b02bd286fe9

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Fixed A9 hello worle
author Windel Bouwman
date Sat, 08 Mar 2014 16:29:03 +0100
parents 3bb7dcfe5529
children 899ae3aea803
comparison
equal deleted inserted replaced
349:13a6e73b448f 350:2b02bd286fe9
32 32
33 def encode(self): 33 def encode(self):
34 self.token[0:32] = self.v 34 self.token[0:32] = self.v
35 return self.token.encode() 35 return self.token.encode()
36 36
37 def __repr__(self):
38 return 'DCD {}'.format(hex(self.v))
39
37 40
38 def Mov(*args): 41 def Mov(*args):
39 if len(args) == 2: 42 if len(args) == 2:
40 if isinstance(args[1], int): 43 if isinstance(args[1], int):
41 return Mov1(*args) 44 return Mov1(*args)
81 self.token[16:20] = 0 84 self.token[16:20] = 0
82 self.token.S = 0 85 self.token.S = 0
83 self.token[21:28] = 0xD 86 self.token[21:28] = 0xD
84 self.token.cond = AL 87 self.token.cond = AL
85 return self.token.encode() 88 return self.token.encode()
89
90 def __repr__(self):
91 return 'MOV {}, {}'.format(self.rd, self.rm)
86 92
87 93
88 def Add(*args): 94 def Add(*args):
89 if len(args) == 3 and isinstance(args[0], ArmRegister) and \ 95 if len(args) == 3 and isinstance(args[0], ArmRegister) and \
90 isinstance(args[1], ArmRegister): 96 isinstance(args[1], ArmRegister):
204 return self.token.encode() 210 return self.token.encode()
205 211
206 def relocations(self): 212 def relocations(self):
207 return [(self.target, 'b_imm24')] 213 return [(self.target, 'b_imm24')]
208 214
215 def __repr__(self):
216 mnemonic = self.__class__.__name__
217 return '{} {}'.format(mnemonic, self.target)
218
209 219
210 EQ, NE, CS, CC, MI, PL, VS, VC, HI, LS, GE, LT, GT, LE, AL = range(15) 220 EQ, NE, CS, CC, MI, PL, VS, VC, HI, LS, GE, LT, GT, LE, AL = range(15)
211 221
212 class BranchBase(BranchBaseRoot): 222 class BranchBase(BranchBaseRoot):
213 opcode = 0b1010 223 opcode = 0b1010
253 self.token[16:28] = 0b100100101101 263 self.token[16:28] = 0b100100101101
254 reg_list = 0 264 reg_list = 0
255 self.token[0:16] = reg_list_to_mask(self.reg_list) 265 self.token[0:16] = reg_list_to_mask(self.reg_list)
256 return self.token.encode() 266 return self.token.encode()
257 267
268 def __repr__(self):
269 return 'PUSH {}'.format(self.reg_list)
270
271
258 class Pop(ArmInstruction): 272 class Pop(ArmInstruction):
259 def __init__(self, register_set): 273 def __init__(self, register_set):
260 super().__init__() 274 super().__init__()
261 self.reg_list = register_set 275 self.reg_list = register_set
262 276
264 self.token.cond = AL 278 self.token.cond = AL
265 self.token[16:28] = 0b100010111101 279 self.token[16:28] = 0b100010111101
266 self.token[0:16] = reg_list_to_mask(self.reg_list) 280 self.token[0:16] = reg_list_to_mask(self.reg_list)
267 return self.token.encode() 281 return self.token.encode()
268 282
283 def __repr__(self):
284 return 'POP {}'.format(self.reg_list)
285
269 286
270 def Ldr(*args): 287 def Ldr(*args):
271 if len(args) == 3 and isinstance(args[1], ArmRegister): 288 """ Convenience function that creates the correct instruction """
272 return Ldr1(*args) 289 if len(args) == 3:
273 elif len(args) == 2 and isinstance(args[1], ArmRegister): 290 if isinstance(args[1], ArmRegister):
274 return Ldr1(args[0], args[1], 0) 291 return Ldr1(*args)
275 raise Exception() 292 elif len(args) == 2:
293 if isinstance(args[1], ArmRegister):
294 return Ldr1(args[0], args[1], 0)
295 elif isinstance(args[1], str):
296 return Ldr3(*args)
297 raise Exception()
298
276 299
277 def Str(*args): 300 def Str(*args):
278 if len(args) == 3 and isinstance(args[1], ArmRegister): 301 if len(args) == 3 and isinstance(args[1], ArmRegister):
279 return Str1(*args) 302 return Str1(*args)
280 elif len(args) == 2 and isinstance(args[1], ArmRegister): 303 elif len(args) == 2 and isinstance(args[1], ArmRegister):
302 else: 325 else:
303 self.token[23] = 0 326 self.token[23] = 0
304 self.token[0:12] = -self.offset 327 self.token[0:12] = -self.offset
305 return self.token.encode() 328 return self.token.encode()
306 329
330 def __repr__(self):
331 return '{} {}, [{}, {}]'.format(self.mnemonic, self.rt, self.rn,
332 hex(self.offset))
307 333
308 class Str1(LdrStrBase): 334 class Str1(LdrStrBase):
309 opcode = 0b010 335 opcode = 0b010
310 bit20 = 0 336 bit20 = 0
337 mnemonic = 'STR'
311 338
312 339
313 class Ldr1(LdrStrBase): 340 class Ldr1(LdrStrBase):
314 opcode = 0b010 341 opcode = 0b010
315 bit20 = 1 342 bit20 = 1
343 mnemonic = 'LDR'
316 344
317 345
318 class Ldr3(ArmInstruction): 346 class Ldr3(ArmInstruction):
319 """ Load PC relative constant value """ 347 """ Load PC relative constant value
348 LDR rt, label
349 encoding A1
350 """
320 def __init__(self, rt, label): 351 def __init__(self, rt, label):
352 super().__init__()
321 self.rt = rt 353 self.rt = rt
322 self.label = label 354 self.label = label
323 355
356 def __repr__(self):
357 return 'LDR {}, {}'.format(self.rt, self.label)
358
359 def relocations(self):
360 return [(self.label, 'ldr_imm12')]
361
362 def encode(self):
363 self.token.cond = AL
364 self.token[0:12] = 0 # Filled by linker
365 self.token[12:16] = self.rt.num
366 self.token[16:23] = 0b0011111
367 self.token[24:28] = 0b0101
368 return self.token.encode()