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

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

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

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

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

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