Mercurial > lcfOS
annotate python/ppci/irmach.py @ 398:c0d9837acde8
x86 target refactor
| author | Windel Bouwman |
|---|---|
| date | Thu, 29 May 2014 12:13:37 +0200 |
| parents | 5d03c10fe19d |
| children |
| rev | line source |
|---|---|
| 261 | 1 |
| 269 | 2 """ |
| 270 | 3 Abstract assembly language instructions. |
| 4 | |
| 5 This is the second intermediate representation. | |
| 6 | |
| 7 Instructions are selected and scheduled at this stage. | |
| 269 | 8 """ |
| 261 | 9 |
| 342 | 10 from .target import Instruction |
|
280
02385f62f250
Rework from str interface to Instruction interface
Windel Bouwman
parents:
277
diff
changeset
|
11 |
| 277 | 12 |
| 274 | 13 class Frame: |
| 323 | 14 """ |
| 274 | 15 Activation record abstraction. This class contains a flattened |
| 16 function. Instructions are selected and scheduled at this stage. | |
| 17 Frames differ per machine. | |
| 18 """ | |
| 19 def __init__(self, name): | |
| 20 self.name = name | |
| 21 self.instructions = [] | |
| 275 | 22 self.stacksize = 0 |
| 274 | 23 |
| 24 def __repr__(self): | |
| 275 | 25 return 'Frame {}'.format(self.name) |
| 274 | 26 |
| 261 | 27 |
| 268 | 28 class AbstractInstruction: |
| 274 | 29 """ |
| 30 Abstract machine instruction class. This is a very simple | |
| 31 abstraction of machine instructions. | |
| 32 """ | |
|
280
02385f62f250
Rework from str interface to Instruction interface
Windel Bouwman
parents:
277
diff
changeset
|
33 def __init__(self, cls, ops=(), src=(), dst=(), jumps=(), others=(), ismove=False): |
| 342 | 34 assert type(cls) is type or isinstance(cls, Instruction), str(cls) |
| 277 | 35 self.assem = cls |
|
280
02385f62f250
Rework from str interface to Instruction interface
Windel Bouwman
parents:
277
diff
changeset
|
36 self.ops = tuple(ops) |
| 268 | 37 self.src = tuple(src) |
| 38 self.dst = tuple(dst) | |
| 39 self.jumps = tuple(jumps) | |
|
280
02385f62f250
Rework from str interface to Instruction interface
Windel Bouwman
parents:
277
diff
changeset
|
40 self.others = tuple(others) |
|
02385f62f250
Rework from str interface to Instruction interface
Windel Bouwman
parents:
277
diff
changeset
|
41 self.ismove = ismove |
| 268 | 42 |
| 366 | 43 def __gt__(self, other): |
| 44 """ To make the class fit for sorting """ | |
| 45 return str(self) > str(other) | |
| 46 | |
| 268 | 47 def __repr__(self): |
| 346 | 48 """ Substitutes source, dst and labels in the string """ |
| 323 | 49 if isinstance(self.assem, Instruction): |
| 50 x = str(self.assem) | |
| 51 else: | |
| 52 cn = self.assem.__name__ | |
| 53 x = '{}, def={}, use={}, other={}' | |
| 54 x = x.format(cn, self.dst, self.src, self.others) | |
| 275 | 55 return x |