105 lines
3.7 KiB
Python
105 lines
3.7 KiB
Python
"""
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Copyright (c) 2020 Alex Forencich
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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THE SOFTWARE.
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"""
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import mmap
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from .utils import hexdump, hexdump_lines, hexdump_str
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class Memory:
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def __init__(self, size=1024, mem=None, **kwargs):
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if mem is not None:
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self.mem = mem
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else:
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self.mem = mmap.mmap(-1, size)
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self.size = len(self.mem)
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super().__init__(**kwargs)
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def read(self, address, length):
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self.mem.seek(address)
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return self.mem.read(length)
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def write(self, address, data):
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self.mem.seek(address)
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self.mem.write(bytes(data))
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def write_words(self, address, data, byteorder='little', ws=2):
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words = data
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data = bytearray()
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for w in words:
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data.extend(w.to_bytes(ws, byteorder))
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self.write(address, data)
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def write_dwords(self, address, data, byteorder='little'):
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self.write_words(address, data, byteorder, 4)
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def write_qwords(self, address, data, byteorder='little'):
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self.write_words(address, data, byteorder, 8)
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def write_byte(self, address, data):
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self.write(address, [data])
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def write_word(self, address, data, byteorder='little', ws=2):
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self.write_words(address, [data], byteorder, ws)
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def write_dword(self, address, data, byteorder='little'):
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self.write_dwords(address, [data], byteorder)
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def write_qword(self, address, data, byteorder='little'):
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self.write_qwords(address, [data], byteorder)
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def read_words(self, address, count, byteorder='little', ws=2):
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data = self.read(address, count*ws)
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words = []
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for k in range(count):
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words.append(int.from_bytes(data[ws*k:ws*(k+1)], byteorder))
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return words
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def read_dwords(self, address, count, byteorder='little'):
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return self.read_words(address, count, byteorder, 4)
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def read_qwords(self, address, count, byteorder='little'):
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return self.read_words(address, count, byteorder, 8)
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def read_byte(self, address):
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return self.read(address, 1)[0]
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def read_word(self, address, byteorder='little', ws=2):
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return self.read_words(address, 1, byteorder, ws)[0]
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def read_dword(self, address, byteorder='little'):
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return self.read_dwords(address, 1, byteorder)[0]
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def read_qword(self, address, byteorder='little'):
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return self.read_qwords(address, 1, byteorder)[0]
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def hexdump(self, address, length, prefix=""):
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hexdump(self.mem, address, length, prefix=prefix)
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def hexdump_lines(self, address, length, prefix=""):
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return hexdump_lines(self.mem, address, length, prefix=prefix)
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def hexdump_str(self, address, length, prefix=""):
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return hexdump_str(self.mem, address, length, prefix=prefix)
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