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comparison python/outstream.py @ 249:e41e4109addd

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Added current position arrow
author Windel Bouwman
date Fri, 26 Jul 2013 20:26:05 +0200
parents 81752b0f85a5
children f5fba5b554d7
comparison
equal deleted inserted replaced
248:b10d46e5c8dd 249:e41e4109addd
1 import binascii 1 import binascii
2 from target import Instruction, Label 2 from target import Instruction, Label, DebugInfo
3 3
4 """ 4 """
5 The output stream is a stream of instructions that can be output 5 The output stream is a stream of instructions that can be output
6 to a file or binary or hexfile. 6 to a file or binary or hexfile.
7 """ 7 """
22 insword = i.encode() 22 insword = i.encode()
23 assert type(insword) is bytes 23 assert type(insword) is bytes
24 d.extend(insword) 24 d.extend(insword)
25 return bytes(d) 25 return bytes(d)
26 26
27 def debugInfos(self):
28 di = [i for i in self.instructions if isinstance(i, DebugInfo)]
29 return di
30
27 class OutputStream: 31 class OutputStream:
28 def __init__(self): 32 def __init__(self):
29 self.sections = {} 33 self.sections = {}
30 self.currentSection = None 34 self.currentSection = None
31 35
33 assert self.currentSection 37 assert self.currentSection
34 self.sections[self.currentSection].emit(item) 38 self.sections[self.currentSection].emit(item)
35 39
36 def selectSection(self, s): 40 def selectSection(self, s):
37 self.currentSection = s 41 self.currentSection = s
38 if not s in self.sections: 42 self.getSection(s)
39 self.sections[s] = Section()
40 43
41 def getLabelAddress(self, lname): 44 def getLabelAddress(self, lname):
42 assert isinstance(lname, str) 45 assert isinstance(lname, str)
43 for s in self.sections.values(): 46 for s in self.sections.values():
44 for i in s.instructions: 47 for i in s.instructions:
45 if type(i) is Label: 48 if type(i) is Label:
46 if i.name == lname: 49 if i.name == lname:
47 return i.address 50 return i.address
48 return 0 51 return 0
52
53 def getSection(self, name):
54 if not name in self.sections:
55 self.sections[name] = Section()
56 return self.sections[name]
49 57
50 def backpatch(self): 58 def backpatch(self):
51 """ Fixup references to other parts in the assembler """ 59 """ Fixup references to other parts in the assembler """
52 for s in self.sections: 60 for s in self.sections:
53 # TODO parameterize this: 61 # TODO parameterize this: