Esempio n. 1
0
    def resolve_args_with_symbols(self, symbols=None):
        if symbols is None:
            symbols = LocationDB()
        args_out = []
        for expr in self.args:
            # try to resolve symbols using symbols (0 for default value)
            loc_keys = m2_expr.get_expr_locs(expr)
            fixed_expr = {}
            for exprloc in loc_keys:
                loc_key = exprloc.loc_key
                names = symbols.get_location_names(loc_key)
                # special symbols
                if '$' in names:
                    fixed_expr[exprloc] = self.get_asm_offset(exprloc)
                    continue
                if '_' in names:
                    fixed_expr[exprloc] = self.get_asm_next_offset(exprloc)
                    continue
                arg_int = symbols.get_location_offset(loc_key)
                if arg_int is not None:
                    fixed_expr[exprloc] = m2_expr.ExprInt(
                        arg_int, exprloc.size)
                    continue
                if not names:
                    raise ValueError('Unresolved symbol: %r' % exprloc)

                offset = symbols.get_location_offset(loc_key)
                if offset is None:
                    raise ValueError(
                        'The offset of loc_key "%s" cannot be determined' %
                        names)
                else:
                    # Fix symbol with its offset
                    size = exprloc.size
                    if size is None:
                        default_size = self.get_symbol_size(exprloc, symbols)
                        size = default_size
                    value = m2_expr.ExprInt(offset, size)
                fixed_expr[exprloc] = value

            expr = expr.replace_expr(fixed_expr)
            expr = expr_simp(expr)
            args_out.append(expr)
        return args_out
Esempio n. 2
0
File: cpu.py Progetto: commial/miasm
    def resolve_args_with_symbols(self, symbols=None):
        if symbols is None:
            symbols = LocationDB()
        args_out = []
        for expr in self.args:
            # try to resolve symbols using symbols (0 for default value)
            loc_keys = m2_expr.get_expr_locs(expr)
            fixed_expr = {}
            for exprloc in loc_keys:
                loc_key = exprloc.loc_key
                names = symbols.get_location_names(loc_key)
                # special symbols
                if '$' in names:
                    fixed_expr[exprloc] = self.get_asm_offset(exprloc)
                    continue
                if '_' in names:
                    fixed_expr[exprloc] = self.get_asm_next_offset(exprloc)
                    continue
                arg_int = symbols.get_location_offset(loc_key)
                if arg_int is not None:
                    fixed_expr[exprloc] = m2_expr.ExprInt(arg_int, exprloc.size)
                    continue
                if not names:
                    raise ValueError('Unresolved symbol: %r' % exprloc)

                offset = symbols.get_location_offset(loc_key)
                if offset is None:
                    raise ValueError(
                        'The offset of loc_key "%s" cannot be determined' % names
                    )
                else:
                    # Fix symbol with its offset
                    size = exprloc.size
                    if size is None:
                        default_size = self.get_symbol_size(exprloc, symbols)
                        size = default_size
                    value = m2_expr.ExprInt(offset, size)
                fixed_expr[exprloc] = value

            expr = expr.replace_expr(fixed_expr)
            expr = expr_simp(expr)
            args_out.append(expr)
        return args_out