symbolization

ELF-specific rules and relations for symbolization

reg_has_got(EA:address, Reg:register)

Value of register ‘Reg’ at address ‘EA’ is a GOT-relative base reference.

Uses: got_section, loaded_section

Used by: symbol_minus_symbol, symbolic_expr, symbolic_operand_attribute

Recursive: const_value_reg_used, function_inference.function_entry_initial, no_return_call_propagated, next_end, may_fallthrough, jump_table_candidate, block_candidate_boundaries, unresolved_interval_order, inferred_main_in_reg, reg_def_use.return_val_used, inter_procedural_edge, compare_and_jump_immediate, block_limit, value_reg_edge, block_next, reg_has_base_image, stack_def_use.block_last_def, possible_target_from, no_return_block, indefinite_litpool_ref, stack_def_use.used_in_block, adjusts_stack_in_block, split_load_total_points, jump_table_candidate_refined, overlap_with_litpool, value_reg_limit, code_in_block_candidate, candidate_block_is_not_padding, likely_fallthrough, arch.reg_relative_load, arm_jump_table_cmp_limit, value_reg_unsupported, nop_in_padding_candidate, arm_jump_table_block_start, __agg_subclause2, transition_block_limit, block_overlap, no_return_call, data_segment, jump_table_element_access, reg_def_use.flow_def, arm_jump_table_skip_first_entry, block_total_points, stack_def_use.defined_in_block, reg_def_use.ambiguous_last_def_in_block, straight_line_def_used, basic_target, symbol_minus_symbol_litpool_access_pattern, value_reg, reg_def_use.live_var_used, compare_and_jump_indirect_op_valid, litpool_ref, padding_block_candidate, self_contained_segment, data_in_code_propagate, unresolved_interval, unlikely_have_symbolic_immediate, symbolic_expr_from_relocation, hi_load_prop, block_points, wis_memo, split_load_for_symbolization, arm_jump_table_data_block_limit, adrp_used, known_block, wis_has_prior, candidate_block_is_padding, no_return_call_refined, data_in_code, reg_def_use.used, is_padding, reg_def_use.ref_in_block, base_relative_operand, def_used_for_address, reg_def_use.live_var_at_prior_used, block_heuristic, relative_address_start, tls_get_addr, __agg_subclause6, instruction_memory_access_size, start_function, arm_jump_table_candidate, first_block_in_byte_interval, stack_base_reg_move, __agg_subclause3, jump_table_target, base_relative_operation, resolved_reaches, next_start, reg_def_use.live_var_def, must_fallthrough, next_type, arm_jump_table_candidate_start, next_block_in_byte_interval, __agg_single3, split_load, indexed_pc_relative_load_relative, block_instruction_next, stack_def_use.live_var_used_in_block, cmp_defines, block, reg_def_use.block_last_def, overlapping_instruction, code_in_block, no_value_reg_limit, jump_table_signed, impossible_block, block_boundaries, wis_prior, composite_data_access, relocation_adjustment_total, discarded_block, stack_def_use.last_def_in_block, indexed_pc_relative_load, __agg_single6, stack_def_use.live_var_at_block_end, after_end, split_load_candidate, incomplete_block, straight_line_last_def, jump_table_max, block_points_proportional, wis_schedule, arm_jump_table_data_block, compare_and_jump_register, block_candidate_dependency_edge, reg_has_got, data_block_candidate, got_relative_operand, contains_plausible_instr_seq, reg_def_use.ambiguous_block_last_def, invalid_jump_table_candidate, possible_target, relative_address, cmp_reg_to_reg, reg_def_use.def_used, cinf_ldr_add_pc, block_implies_block, contains_implausible_instr_seq, split_load_point, call_tls_get_addr, unresolved_block, split_load_operand, inferred_main_dispatch, gp_relative_operand, code_in_block_candidate_refined, reg_reg_arithmetic_operation_defs, litpool_symbolic_operand, data_access, init_symbol_minus_symbol_candidate_arm, plt_block, invalid, litpool_boundaries, segment_target_range, correlated_live_reg, arm_jump_table_block_instruction, simple_data_access_pattern, reg_def_use.live_var_at_block_end, reg_def_use.defined_in_block, block_last_instruction, flags_and_jump_pair, split_load_conflict, data_block_limit, last_value_reg_limit, reg_used_for, initialized_data_segment, __agg_subclause7, stack_def_use.live_var_at_prior_used, jump_table_start, unresolved_block_overlap, arch.extend_load, stack_def_use.def_used, init_ldr_add_pc, litpool_confidence, tls_desc_call, common_tail, stack_def_use.ref_in_block, arch.simple_data_load, reg_def_use.used_in_block, base_relative_jump, branch_to_calculated_pc_rel_addr, stack_def_use.live_var_def, wis_schedule_iter, jump_table_prelude, negative_block_heuristic, relocation_adjustment, compare_and_jump_indirect, reg_def_use.last_def_in_block, relative_jump_table_entry_candidate, discarded_split_load, __agg_single2, padding_block_limit, reg_def_use.return_block_end, plt_entry, stack_def_use.live_var_used

got_reference_pointer(EA:address)

Address ‘EA’ is used as a GOT-relative base reference. ‘EA’ is the beginning of either the .got or .got.plt section.

Uses: loaded_section

Used by: got_relative_operand, inferred_special_symbol, jump_table_start, plt_entry, symbol_minus_symbol, symbolic_expr, symbolic_operand_attribute

got_relative_operand(EA:address, Index:operand_index, Dest:address)

Operand instruction at ‘EA’ at index ‘Index’ is a GOT-relative reference to an address ‘Dest’.

Uses: arch.reg_reg_arithmetic_operation, got_reference_pointer, instruction_displacement_offset, instruction_get_op, op_immediate_and_reg, op_indirect_mapped, relocation, symbol

Used by: moved_label_candidate, moved_label_class, symbolic_operand_attribute, symbolic_operand_candidate, tls_global_dynamic

Recursive: const_value_reg_used, function_inference.function_entry_initial, no_return_call_propagated, next_end, may_fallthrough, jump_table_candidate, block_candidate_boundaries, unresolved_interval_order, inferred_main_in_reg, reg_def_use.return_val_used, inter_procedural_edge, compare_and_jump_immediate, block_limit, value_reg_edge, block_next, reg_has_base_image, stack_def_use.block_last_def, possible_target_from, no_return_block, indefinite_litpool_ref, stack_def_use.used_in_block, adjusts_stack_in_block, split_load_total_points, jump_table_candidate_refined, overlap_with_litpool, value_reg_limit, code_in_block_candidate, candidate_block_is_not_padding, likely_fallthrough, arch.reg_relative_load, arm_jump_table_cmp_limit, value_reg_unsupported, nop_in_padding_candidate, arm_jump_table_block_start, __agg_subclause2, transition_block_limit, block_overlap, no_return_call, data_segment, jump_table_element_access, reg_def_use.flow_def, arm_jump_table_skip_first_entry, block_total_points, stack_def_use.defined_in_block, reg_def_use.ambiguous_last_def_in_block, straight_line_def_used, basic_target, symbol_minus_symbol_litpool_access_pattern, value_reg, reg_def_use.live_var_used, compare_and_jump_indirect_op_valid, litpool_ref, padding_block_candidate, self_contained_segment, data_in_code_propagate, unresolved_interval, unlikely_have_symbolic_immediate, symbolic_expr_from_relocation, hi_load_prop, block_points, wis_memo, split_load_for_symbolization, arm_jump_table_data_block_limit, adrp_used, known_block, wis_has_prior, candidate_block_is_padding, no_return_call_refined, data_in_code, reg_def_use.used, is_padding, reg_def_use.ref_in_block, base_relative_operand, def_used_for_address, reg_def_use.live_var_at_prior_used, block_heuristic, relative_address_start, tls_get_addr, __agg_subclause6, instruction_memory_access_size, start_function, arm_jump_table_candidate, first_block_in_byte_interval, stack_base_reg_move, __agg_subclause3, jump_table_target, base_relative_operation, resolved_reaches, next_start, reg_def_use.live_var_def, must_fallthrough, next_type, arm_jump_table_candidate_start, next_block_in_byte_interval, __agg_single3, split_load, indexed_pc_relative_load_relative, block_instruction_next, stack_def_use.live_var_used_in_block, cmp_defines, block, reg_def_use.block_last_def, overlapping_instruction, code_in_block, no_value_reg_limit, jump_table_signed, impossible_block, block_boundaries, wis_prior, composite_data_access, relocation_adjustment_total, discarded_block, stack_def_use.last_def_in_block, indexed_pc_relative_load, __agg_single6, stack_def_use.live_var_at_block_end, after_end, split_load_candidate, incomplete_block, straight_line_last_def, jump_table_max, block_points_proportional, wis_schedule, arm_jump_table_data_block, compare_and_jump_register, block_candidate_dependency_edge, reg_has_got, data_block_candidate, got_relative_operand, contains_plausible_instr_seq, reg_def_use.ambiguous_block_last_def, invalid_jump_table_candidate, possible_target, relative_address, cmp_reg_to_reg, reg_def_use.def_used, cinf_ldr_add_pc, block_implies_block, contains_implausible_instr_seq, split_load_point, call_tls_get_addr, unresolved_block, split_load_operand, inferred_main_dispatch, gp_relative_operand, code_in_block_candidate_refined, reg_reg_arithmetic_operation_defs, litpool_symbolic_operand, data_access, init_symbol_minus_symbol_candidate_arm, plt_block, invalid, litpool_boundaries, segment_target_range, correlated_live_reg, arm_jump_table_block_instruction, simple_data_access_pattern, reg_def_use.live_var_at_block_end, reg_def_use.defined_in_block, block_last_instruction, flags_and_jump_pair, split_load_conflict, data_block_limit, last_value_reg_limit, reg_used_for, initialized_data_segment, __agg_subclause7, stack_def_use.live_var_at_prior_used, jump_table_start, unresolved_block_overlap, arch.extend_load, stack_def_use.def_used, init_ldr_add_pc, litpool_confidence, tls_desc_call, common_tail, stack_def_use.ref_in_block, arch.simple_data_load, reg_def_use.used_in_block, base_relative_jump, branch_to_calculated_pc_rel_addr, stack_def_use.live_var_def, wis_schedule_iter, jump_table_prelude, negative_block_heuristic, relocation_adjustment, compare_and_jump_indirect, reg_def_use.last_def_in_block, relative_jump_table_entry_candidate, discarded_split_load, __agg_single2, padding_block_limit, reg_def_use.return_block_end, plt_entry, stack_def_use.live_var_used

start_function(ea:address)

do_infer_main_function()

Decide whether the main function should be inferred.

WARNING: Predicate not present in compiled Datalog program (Dead Code)

inferred_main_dispatch(EA:address)

Locate where main() is dispatched (i.e., where __libc_start_main is called.)

Uses: binary_format, binary_type, function_symbol

Recursive: const_value_reg_used, function_inference.function_entry_initial, no_return_call_propagated, next_end, may_fallthrough, jump_table_candidate, block_candidate_boundaries, unresolved_interval_order, inferred_main_in_reg, reg_def_use.return_val_used, inter_procedural_edge, compare_and_jump_immediate, block_limit, value_reg_edge, block_next, reg_has_base_image, stack_def_use.block_last_def, possible_target_from, no_return_block, indefinite_litpool_ref, stack_def_use.used_in_block, adjusts_stack_in_block, split_load_total_points, jump_table_candidate_refined, overlap_with_litpool, value_reg_limit, code_in_block_candidate, candidate_block_is_not_padding, likely_fallthrough, arch.reg_relative_load, arm_jump_table_cmp_limit, value_reg_unsupported, nop_in_padding_candidate, arm_jump_table_block_start, __agg_subclause2, transition_block_limit, block_overlap, no_return_call, data_segment, jump_table_element_access, reg_def_use.flow_def, arm_jump_table_skip_first_entry, block_total_points, stack_def_use.defined_in_block, reg_def_use.ambiguous_last_def_in_block, straight_line_def_used, basic_target, symbol_minus_symbol_litpool_access_pattern, value_reg, reg_def_use.live_var_used, compare_and_jump_indirect_op_valid, litpool_ref, padding_block_candidate, self_contained_segment, data_in_code_propagate, unresolved_interval, unlikely_have_symbolic_immediate, symbolic_expr_from_relocation, hi_load_prop, block_points, wis_memo, split_load_for_symbolization, arm_jump_table_data_block_limit, adrp_used, known_block, wis_has_prior, candidate_block_is_padding, no_return_call_refined, data_in_code, reg_def_use.used, is_padding, reg_def_use.ref_in_block, base_relative_operand, def_used_for_address, reg_def_use.live_var_at_prior_used, block_heuristic, relative_address_start, tls_get_addr, __agg_subclause6, instruction_memory_access_size, start_function, arm_jump_table_candidate, first_block_in_byte_interval, stack_base_reg_move, __agg_subclause3, jump_table_target, base_relative_operation, resolved_reaches, next_start, reg_def_use.live_var_def, must_fallthrough, next_type, arm_jump_table_candidate_start, next_block_in_byte_interval, __agg_single3, split_load, indexed_pc_relative_load_relative, block_instruction_next, stack_def_use.live_var_used_in_block, cmp_defines, block, reg_def_use.block_last_def, overlapping_instruction, code_in_block, no_value_reg_limit, jump_table_signed, impossible_block, block_boundaries, wis_prior, composite_data_access, relocation_adjustment_total, discarded_block, stack_def_use.last_def_in_block, indexed_pc_relative_load, __agg_single6, stack_def_use.live_var_at_block_end, after_end, split_load_candidate, incomplete_block, straight_line_last_def, jump_table_max, block_points_proportional, wis_schedule, arm_jump_table_data_block, compare_and_jump_register, block_candidate_dependency_edge, reg_has_got, data_block_candidate, got_relative_operand, contains_plausible_instr_seq, reg_def_use.ambiguous_block_last_def, invalid_jump_table_candidate, possible_target, relative_address, cmp_reg_to_reg, reg_def_use.def_used, cinf_ldr_add_pc, block_implies_block, contains_implausible_instr_seq, split_load_point, call_tls_get_addr, unresolved_block, split_load_operand, inferred_main_dispatch, gp_relative_operand, code_in_block_candidate_refined, reg_reg_arithmetic_operation_defs, litpool_symbolic_operand, data_access, init_symbol_minus_symbol_candidate_arm, plt_block, invalid, litpool_boundaries, segment_target_range, correlated_live_reg, arm_jump_table_block_instruction, simple_data_access_pattern, reg_def_use.live_var_at_block_end, reg_def_use.defined_in_block, block_last_instruction, flags_and_jump_pair, split_load_conflict, data_block_limit, last_value_reg_limit, reg_used_for, initialized_data_segment, __agg_subclause7, stack_def_use.live_var_at_prior_used, jump_table_start, unresolved_block_overlap, arch.extend_load, stack_def_use.def_used, init_ldr_add_pc, litpool_confidence, tls_desc_call, common_tail, stack_def_use.ref_in_block, arch.simple_data_load, reg_def_use.used_in_block, base_relative_jump, branch_to_calculated_pc_rel_addr, stack_def_use.live_var_def, wis_schedule_iter, jump_table_prelude, negative_block_heuristic, relocation_adjustment, compare_and_jump_indirect, reg_def_use.last_def_in_block, relative_jump_table_entry_candidate, discarded_split_load, __agg_single2, padding_block_limit, reg_def_use.return_block_end, plt_entry, stack_def_use.live_var_used

inferred_main_in_reg(EA:address, Reg:register)

The location and register where the address of main is loaded.

Uses: arch.integer_reg_param, instruction, instruction_get_src_op, next, op_indirect_contains_reg, op_regdirect_contains_reg

Used by: inferred_main_function

Recursive: const_value_reg_used, function_inference.function_entry_initial, no_return_call_propagated, next_end, may_fallthrough, jump_table_candidate, block_candidate_boundaries, unresolved_interval_order, inferred_main_in_reg, reg_def_use.return_val_used, inter_procedural_edge, compare_and_jump_immediate, block_limit, value_reg_edge, block_next, reg_has_base_image, stack_def_use.block_last_def, possible_target_from, no_return_block, indefinite_litpool_ref, stack_def_use.used_in_block, adjusts_stack_in_block, split_load_total_points, jump_table_candidate_refined, overlap_with_litpool, value_reg_limit, code_in_block_candidate, candidate_block_is_not_padding, likely_fallthrough, arch.reg_relative_load, arm_jump_table_cmp_limit, value_reg_unsupported, nop_in_padding_candidate, arm_jump_table_block_start, __agg_subclause2, transition_block_limit, block_overlap, no_return_call, data_segment, jump_table_element_access, reg_def_use.flow_def, arm_jump_table_skip_first_entry, block_total_points, stack_def_use.defined_in_block, reg_def_use.ambiguous_last_def_in_block, straight_line_def_used, basic_target, symbol_minus_symbol_litpool_access_pattern, value_reg, reg_def_use.live_var_used, compare_and_jump_indirect_op_valid, litpool_ref, padding_block_candidate, self_contained_segment, data_in_code_propagate, unresolved_interval, unlikely_have_symbolic_immediate, symbolic_expr_from_relocation, hi_load_prop, block_points, wis_memo, split_load_for_symbolization, arm_jump_table_data_block_limit, adrp_used, known_block, wis_has_prior, candidate_block_is_padding, no_return_call_refined, data_in_code, reg_def_use.used, is_padding, reg_def_use.ref_in_block, base_relative_operand, def_used_for_address, reg_def_use.live_var_at_prior_used, block_heuristic, relative_address_start, tls_get_addr, __agg_subclause6, instruction_memory_access_size, start_function, arm_jump_table_candidate, first_block_in_byte_interval, stack_base_reg_move, __agg_subclause3, jump_table_target, base_relative_operation, resolved_reaches, next_start, reg_def_use.live_var_def, must_fallthrough, next_type, arm_jump_table_candidate_start, next_block_in_byte_interval, __agg_single3, split_load, indexed_pc_relative_load_relative, block_instruction_next, stack_def_use.live_var_used_in_block, cmp_defines, block, reg_def_use.block_last_def, overlapping_instruction, code_in_block, no_value_reg_limit, jump_table_signed, impossible_block, block_boundaries, wis_prior, composite_data_access, relocation_adjustment_total, discarded_block, stack_def_use.last_def_in_block, indexed_pc_relative_load, __agg_single6, stack_def_use.live_var_at_block_end, after_end, split_load_candidate, incomplete_block, straight_line_last_def, jump_table_max, block_points_proportional, wis_schedule, arm_jump_table_data_block, compare_and_jump_register, block_candidate_dependency_edge, reg_has_got, data_block_candidate, got_relative_operand, contains_plausible_instr_seq, reg_def_use.ambiguous_block_last_def, invalid_jump_table_candidate, possible_target, relative_address, cmp_reg_to_reg, reg_def_use.def_used, cinf_ldr_add_pc, block_implies_block, contains_implausible_instr_seq, split_load_point, call_tls_get_addr, unresolved_block, split_load_operand, inferred_main_dispatch, gp_relative_operand, code_in_block_candidate_refined, reg_reg_arithmetic_operation_defs, litpool_symbolic_operand, data_access, init_symbol_minus_symbol_candidate_arm, plt_block, invalid, litpool_boundaries, segment_target_range, correlated_live_reg, arm_jump_table_block_instruction, simple_data_access_pattern, reg_def_use.live_var_at_block_end, reg_def_use.defined_in_block, block_last_instruction, flags_and_jump_pair, split_load_conflict, data_block_limit, last_value_reg_limit, reg_used_for, initialized_data_segment, __agg_subclause7, stack_def_use.live_var_at_prior_used, jump_table_start, unresolved_block_overlap, arch.extend_load, stack_def_use.def_used, init_ldr_add_pc, litpool_confidence, tls_desc_call, common_tail, stack_def_use.ref_in_block, arch.simple_data_load, reg_def_use.used_in_block, base_relative_jump, branch_to_calculated_pc_rel_addr, stack_def_use.live_var_def, wis_schedule_iter, jump_table_prelude, negative_block_heuristic, relocation_adjustment, compare_and_jump_indirect, reg_def_use.last_def_in_block, relative_jump_table_entry_candidate, discarded_split_load, __agg_single2, padding_block_limit, reg_def_use.return_block_end, plt_entry, stack_def_use.live_var_used

inferred_main_function(Main_location:address)

Infer the location of the main function.

Uses: address_in_data, code_in_block, inferred_main_in_reg, instruction_get_op, op_indirect_contains_reg, reg_def_use.def_used, value_reg

Recursive: data_object_conflict, labeled_data_candidate, boundary_sym_expr, symbolic_expr_symbol_minus_symbol, data_object, resolved_transfer, function_inference.function_entry, string_candidate, moved_data_label, labeled_ea, value_reg_address_before, code_pointer_in_data, moved_label_candidate, symbolic_operand_point, discarded_jump_table_entry, data_object_total_points, inferred_special_symbol, data_limit, next_data_limit, code_in_refined_block, data_access_limit, symbol_minus_symbol_from_relocation, +disconnected3, moved_displacement_candidate, best_func_symbol, main_function, data_object_point, data_limit_after_access, symbolic_data, string_candidate_refined, preferred_data_access, address_array, symbolic_expr, split_block, refined_block, moved_label, moved_pc_relative_candidate, +disconnected6, code_in_split_block, +disconnected2, after_address_in_data, address_array_aux, next_address_in_data, best_symexpr_symbol, data_object_candidate, symbolic_expr_attribute, +disconnected1, symbolic_operand_attribute, symbolic_operand, got_reference, block_needs_splitting_at, jump_table, label_conflict, symbol_minus_symbol, block_needs_merging, relative_jump_table_entry, base_relative_symbolic_operand, symbol_minus_symbol_candidate, discarded_data_object, symbol_score, inferred_main_function

reloc_type_relpc(Type:symbol)

Type of relocation relevant to pc-relative attribute

Used by: relocation_adjustment

reloc_type_with_name(Type:symbol)

Type of relocation possibly with non-empty Symbol name

Used by: symbolic_expr_from_relocation

reloc_type_nameless(Type:symbol)

Type of relocation possibly with empty Symbol name

Used by: symbolic_expr_from_relocation

copy_relocated_symbol(EA:address, Name:symbol)

Collect all the symbols whose address, size and type are the same as the symbol with COPY relocation.

Uses: relocation, symbol

Recursive: copy_relocated_symbol

best_ifunc_symbol(EA:address, SymbolName:symbol)

Best GNU_IFUNC symbol for plt entries. Uses ifunc_symbol_score to deterministically select a single ifunc symbol for each EA.

Uses: ifunc_symbol_score, relocation, symbol

Used by: plt_entry

ifunc_symbol_score(EA:address, SymbolName:symbol, Score:unsigned)

Provide a score to GNU_IFUNC symbols based on scope, visibility, and their table index.

Uses: defined_symbol, ifunc_scope_score, symbol_visibility_score

Used by: best_ifunc_symbol

ifunc_scope_score(Scope:symbol, Score:unsigned)

Auxiliary predicate to define ifunc_symbol_score Prefer symbols with LOCAL over GLOBAL, and with GLOBAl over anything else (WEAK).

Uses: symbol

Used by: ifunc_symbol_score