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67 lines
1.7 KiB
Python
67 lines
1.7 KiB
Python
import sys, struct, subprocess
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class MapSymbol():
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def __init__(self, addr, size, type, name, errc):
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self.addr = addr
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self.size = size
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self.errc = errc
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self.type = type
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self.name = name
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self.strlen = (len(name) + 4) & (~3)
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def __str__(self):
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return "%s %d %s %hi %c %c" % (self.addr, self.size, self.name, self.strlen, self.errc, self.type)
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def __repr__(self):
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return "%s %d %s %hi %c %c" % (self.addr, self.size, self.name, self.strlen, self.errc, self.type)
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structDef = ">LLLHBB"
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symNames = []
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proc = subprocess.Popen(["nm", "-S", "-v", sys.argv[1]], stdout=subprocess.PIPE)
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symbols = proc.communicate()[0].decode('ascii').split("\n")
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for line in symbols:
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# format:
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# 80153210 000000f8 T global_sym
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# 80153210 t static_sym
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tokens = line.split()
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if len(tokens) >= 3 and len(tokens[-2]) == 1:
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addr = int(tokens[0], 16)
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errc = ord('\0')
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if symNames:
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prevEntry = symNames[-1]
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if prevEntry.size == 0 and addr > prevEntry.addr:
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sizeToLastEntry = addr - prevEntry.addr
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if sizeToLastEntry < 0xFFFFF:
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prevEntry.size = sizeToLastEntry
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else:
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errc = ord('S')
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if addr & 0x80000000:
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name = tokens[-1]
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type = ord(tokens[-2])
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if len(tokens) < 4:
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size = 0
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else:
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size = int(tokens[-3], 16)
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symNames.append(MapSymbol(addr, size, type, name, errc))
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f1 = open(sys.argv[2], "wb+") # addr
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f2 = open(sys.argv[3], "wb+") # name
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symNames.sort(key=lambda x: x.addr)
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off = 0
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for x in symNames:
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f1.write(struct.pack(structDef, x.addr, x.size, off, len(x.name), x.errc, x.type))
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f2.write(struct.pack(">%ds" % x.strlen, bytes(x.name, encoding="ascii")))
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off += x.strlen
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f1.close()
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f2.close()
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# print('\n'.join([str(hex(x.addr)) + " " + x.name for x in symNames]))
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