Exemplo n.º 1
0
    def getPatches(self, elfFile, symbols, file):
        s = self.getSymbol(symbols, self.symbol)

        # Compile a BL
        assert (s.value % 4) == 0
        assert (self.addr % 4) == 0
        offset = (s.value - self.addr - 8) / 4
        asm = bitstring.pack("intle:24, bin:4, bin:3, bin:1", offset, "0b1110", "0b101", "0b1")

        return [(elfhelper.vaddr_to_offset(elfFile, self.addr), asm.tobytes())]
Exemplo n.º 2
0
def main(argv):
	parser = argparse.ArgumentParser(description="vaddroffset")
	parser.add_argument('-o', '--offset', help="offset")
	parser.add_argument('-v', '--vaddr', help="vaddr")
	parser.add_argument('file', help="file")
	args = parser.parse_args(argv[1:])


	elff = elffile.open(args.file)
	if args.offset:
		print("0x%x" % (elfhelper.offset_to_vaddr(elff, int(args.offset, 0))))

	elif args.vaddr:
		print("0x%x" % (elfhelper.vaddr_to_offset(elff, int(args.vaddr, 0))))
Exemplo n.º 3
0
    def getPatches(self, elfFile, symbols, file):
        s = self.getSymbol(symbols, self.symbol)
        file.seek(s.value)
        (new_list_size,) = struct.unpack("I", file.read(4))
        file.seek(self.addr)
        (instr,) = struct.unpack("I", file.read(4))

        # Compute the new instruction
        if instr != 0xE287A03C:
            raise ValueError("Instruction '%d' is not valid" % instr)
        instr = instr & 0xFFFFFF00
        instr = instr + new_list_size

        data = struct.pack("I", instr)
        return [(elfhelper.vaddr_to_offset(elfFile, self.addr), data)]
Exemplo n.º 4
0
 def getPatches(self, elfFile, symbols, file):
     s = self.getSymbol(symbols, self.symbol)
     file.seek(s.value)
     (value,) = struct.unpack("I", file.read(4))
     return [(elfhelper.vaddr_to_offset(elfFile, self.addr), struct.pack("i", value))]
Exemplo n.º 5
0
 def getPatches(self, elfFile, symbols, file):
     s = self.getSymbol(symbols, self.symbol)
     return [(elfhelper.vaddr_to_offset(elfFile, self.addr), struct.pack("i", s.value))]