symbolization

ELF-specific rules and relations for symbolization

elf_relocation_size(ISA:symbol, Type:symbol, Size:unsigned)

Table maps ELF relocation types to a size in bits.

Used by: relocation_size, symbolic_expr_from_relocation, symbolic_operand_attribute

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: block_points_proportional, next_type, reg_def_use.live_var_at_prior_used, relative_address, composite_data_access, block_limit, __agg_single2, no_return_call, __agg_subclause2, block_candidate_boundaries, instruction_memory_access_size, data_in_code, indexed_pc_relative_load, data_access, arm_jump_table_data_block, impossible_block, block_instruction_next, candidate_block_is_not_padding, invalid_jump_table_candidate, jump_table_target, function_inference.function_entry_initial, split_load_candidate, self_contained_segment, initialized_data_segment, base_relative_jump, split_load_point, __agg_single3, padding_block_limit, reg_reg_arithmetic_operation_defs, branch_to_calculated_pc_rel_addr, tls_desc_call, block_points, stack_base_reg_move, overlapping_instruction, wis_memo, stack_def_use.ref_in_block, __agg_subclause4, wis_schedule, simple_data_access_pattern, relative_address_start, compare_and_jump_indirect, reg_def_use.defined_in_block, jump_table_max, reg_def_use.ambiguous_last_def_in_block, value_reg_limit, stack_def_use.block_last_def, data_block_candidate, stack_def_use.def_used, reg_def_use.used_in_block, plt_block, data_block_limit, jump_table_element_access, data_segment, jump_table_candidate, split_load_operand, block_next, litpool_boundaries, invalid, jump_table_candidate_refined, arm_jump_table_cmp_limit, stack_def_use.live_var_used_in_block, litpool_confidence, segment_target_range, indexed_pc_relative_load_relative, block_overlap, negative_block_heuristic, jump_table_prelude, stack_def_use.used_in_block, reg_def_use.live_var_at_block_end, no_return_call_propagated, reg_def_use.return_val_used, data_in_code_propagate, straight_line_last_def, candidate_block_is_padding, base_relative_operation, arch.reg_relative_load, arm_jump_table_candidate, next_block_in_byte_interval, may_fallthrough, reg_def_use.ambiguous_block_last_def, __agg_single10, no_value_reg_limit, discarded_block, common_tail, unresolved_interval, block_boundaries, straight_line_def_used, inter_procedural_edge, relocation_adjustment_total, code_in_block_candidate_refined, const_value_reg_used, indefinite_litpool_ref, reg_def_use.flow_def, plt_entry, def_used_for_address, first_block_in_byte_interval, split_load_total_points, resolved_reaches, possible_target, reg_def_use.live_var_def, possible_target_from, reg_used_for, compare_and_jump_indirect_op_valid, __agg_single6, split_load, no_return_block, unresolved_block, reg_def_use.block_last_def, relative_jump_table_entry_candidate, __agg_subclause6, litpool_symbolic_operand, next_end, unresolved_interval_order, compare_and_jump_register, stack_def_use.live_var_at_prior_used, call_tls_get_addr, nop_in_padding_candidate, known_block, is_padding, likely_fallthrough, tls_get_addr, local_dynamic_tls_candidate, correlated_live_reg, value_reg_unsupported, code_in_block, arch.simple_data_load, overlap_with_litpool, padding_block_candidate, base_relative_operand, symbolic_expr_from_relocation, reg_def_use.last_def_in_block, reg_has_base_image, arm_jump_table_skip_first_entry, init_symbol_minus_symbol_candidate_arm, block, no_return_call_refined, tls_relative_operand_mips, discarded_split_load, reg_def_use.used, cmp_reg_to_reg, relocation_adjustment, unlikely_have_symbolic_immediate, reg_def_use.live_var_used, cmp_defines, jump_table_start, reg_def_use.def_used, wis_prior, call_tls_get_addr_mips, __agg_subclause3, start_function, stack_def_use.defined_in_block, contains_plausible_instr_seq, reg_def_use.return_block_end, next_start, inferred_main_dispatch, last_value_reg_limit, arm_jump_table_block_instruction, compare_and_jump_immediate, __agg_subclause7, gp_relative_operand, litpool_ref, wis_has_prior, contains_implausible_instr_seq, after_end, init_ldr_add_pc, unresolved_block_overlap, code_in_block_candidate, block_candidate_dependency_edge, split_load_conflict, reg_def_use.ref_in_block, inferred_main_in_reg, arch.extend_load, arm_jump_table_data_block_limit, reg_has_got, wis_schedule_iter, cinf_ldr_add_pc, arm_jump_table_block_start, flags_and_jump_pair, hi_load_prop, arm_jump_table_candidate_start, block_implies_block, symbol_minus_symbol_litpool_access_pattern, adrp_used, block_total_points, stack_def_use.live_var_at_block_end, stack_def_use.live_var_used, block_last_instruction, stack_def_use.last_def_in_block, got_relative_operand, incomplete_block, basic_target, transition_block_limit, block_heuristic, adjusts_stack_in_block, must_fallthrough, value_reg, jump_table_signed, value_reg_edge, split_load_for_symbolization, stack_def_use.live_var_def

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: block_points_proportional, next_type, reg_def_use.live_var_at_prior_used, relative_address, composite_data_access, block_limit, __agg_single2, no_return_call, __agg_subclause2, block_candidate_boundaries, instruction_memory_access_size, data_in_code, indexed_pc_relative_load, data_access, arm_jump_table_data_block, impossible_block, block_instruction_next, candidate_block_is_not_padding, invalid_jump_table_candidate, jump_table_target, function_inference.function_entry_initial, split_load_candidate, self_contained_segment, initialized_data_segment, base_relative_jump, split_load_point, __agg_single3, padding_block_limit, reg_reg_arithmetic_operation_defs, branch_to_calculated_pc_rel_addr, tls_desc_call, block_points, stack_base_reg_move, overlapping_instruction, wis_memo, stack_def_use.ref_in_block, __agg_subclause4, wis_schedule, simple_data_access_pattern, relative_address_start, compare_and_jump_indirect, reg_def_use.defined_in_block, jump_table_max, reg_def_use.ambiguous_last_def_in_block, value_reg_limit, stack_def_use.block_last_def, data_block_candidate, stack_def_use.def_used, reg_def_use.used_in_block, plt_block, data_block_limit, jump_table_element_access, data_segment, jump_table_candidate, split_load_operand, block_next, litpool_boundaries, invalid, jump_table_candidate_refined, arm_jump_table_cmp_limit, stack_def_use.live_var_used_in_block, litpool_confidence, segment_target_range, indexed_pc_relative_load_relative, block_overlap, negative_block_heuristic, jump_table_prelude, stack_def_use.used_in_block, reg_def_use.live_var_at_block_end, no_return_call_propagated, reg_def_use.return_val_used, data_in_code_propagate, straight_line_last_def, candidate_block_is_padding, base_relative_operation, arch.reg_relative_load, arm_jump_table_candidate, next_block_in_byte_interval, may_fallthrough, reg_def_use.ambiguous_block_last_def, __agg_single10, no_value_reg_limit, discarded_block, common_tail, unresolved_interval, block_boundaries, straight_line_def_used, inter_procedural_edge, relocation_adjustment_total, code_in_block_candidate_refined, const_value_reg_used, indefinite_litpool_ref, reg_def_use.flow_def, plt_entry, def_used_for_address, first_block_in_byte_interval, split_load_total_points, resolved_reaches, possible_target, reg_def_use.live_var_def, possible_target_from, reg_used_for, compare_and_jump_indirect_op_valid, __agg_single6, split_load, no_return_block, unresolved_block, reg_def_use.block_last_def, relative_jump_table_entry_candidate, __agg_subclause6, litpool_symbolic_operand, next_end, unresolved_interval_order, compare_and_jump_register, stack_def_use.live_var_at_prior_used, call_tls_get_addr, nop_in_padding_candidate, known_block, is_padding, likely_fallthrough, tls_get_addr, local_dynamic_tls_candidate, correlated_live_reg, value_reg_unsupported, code_in_block, arch.simple_data_load, overlap_with_litpool, padding_block_candidate, base_relative_operand, symbolic_expr_from_relocation, reg_def_use.last_def_in_block, reg_has_base_image, arm_jump_table_skip_first_entry, init_symbol_minus_symbol_candidate_arm, block, no_return_call_refined, tls_relative_operand_mips, discarded_split_load, reg_def_use.used, cmp_reg_to_reg, relocation_adjustment, unlikely_have_symbolic_immediate, reg_def_use.live_var_used, cmp_defines, jump_table_start, reg_def_use.def_used, wis_prior, call_tls_get_addr_mips, __agg_subclause3, start_function, stack_def_use.defined_in_block, contains_plausible_instr_seq, reg_def_use.return_block_end, next_start, inferred_main_dispatch, last_value_reg_limit, arm_jump_table_block_instruction, compare_and_jump_immediate, __agg_subclause7, gp_relative_operand, litpool_ref, wis_has_prior, contains_implausible_instr_seq, after_end, init_ldr_add_pc, unresolved_block_overlap, code_in_block_candidate, block_candidate_dependency_edge, split_load_conflict, reg_def_use.ref_in_block, inferred_main_in_reg, arch.extend_load, arm_jump_table_data_block_limit, reg_has_got, wis_schedule_iter, cinf_ldr_add_pc, arm_jump_table_block_start, flags_and_jump_pair, hi_load_prop, arm_jump_table_candidate_start, block_implies_block, symbol_minus_symbol_litpool_access_pattern, adrp_used, block_total_points, stack_def_use.live_var_at_block_end, stack_def_use.live_var_used, block_last_instruction, stack_def_use.last_def_in_block, got_relative_operand, incomplete_block, basic_target, transition_block_limit, block_heuristic, adjusts_stack_in_block, must_fallthrough, value_reg, jump_table_signed, value_reg_edge, split_load_for_symbolization, stack_def_use.live_var_def

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: block_points_proportional, next_type, reg_def_use.live_var_at_prior_used, relative_address, composite_data_access, block_limit, __agg_single2, no_return_call, __agg_subclause2, block_candidate_boundaries, instruction_memory_access_size, data_in_code, indexed_pc_relative_load, data_access, arm_jump_table_data_block, impossible_block, block_instruction_next, candidate_block_is_not_padding, invalid_jump_table_candidate, jump_table_target, function_inference.function_entry_initial, split_load_candidate, self_contained_segment, initialized_data_segment, base_relative_jump, split_load_point, __agg_single3, padding_block_limit, reg_reg_arithmetic_operation_defs, branch_to_calculated_pc_rel_addr, tls_desc_call, block_points, stack_base_reg_move, overlapping_instruction, wis_memo, stack_def_use.ref_in_block, __agg_subclause4, wis_schedule, simple_data_access_pattern, relative_address_start, compare_and_jump_indirect, reg_def_use.defined_in_block, jump_table_max, reg_def_use.ambiguous_last_def_in_block, value_reg_limit, stack_def_use.block_last_def, data_block_candidate, stack_def_use.def_used, reg_def_use.used_in_block, plt_block, data_block_limit, jump_table_element_access, data_segment, jump_table_candidate, split_load_operand, block_next, litpool_boundaries, invalid, jump_table_candidate_refined, arm_jump_table_cmp_limit, stack_def_use.live_var_used_in_block, litpool_confidence, segment_target_range, indexed_pc_relative_load_relative, block_overlap, negative_block_heuristic, jump_table_prelude, stack_def_use.used_in_block, reg_def_use.live_var_at_block_end, no_return_call_propagated, reg_def_use.return_val_used, data_in_code_propagate, straight_line_last_def, candidate_block_is_padding, base_relative_operation, arch.reg_relative_load, arm_jump_table_candidate, next_block_in_byte_interval, may_fallthrough, reg_def_use.ambiguous_block_last_def, __agg_single10, no_value_reg_limit, discarded_block, common_tail, unresolved_interval, block_boundaries, straight_line_def_used, inter_procedural_edge, relocation_adjustment_total, code_in_block_candidate_refined, const_value_reg_used, indefinite_litpool_ref, reg_def_use.flow_def, plt_entry, def_used_for_address, first_block_in_byte_interval, split_load_total_points, resolved_reaches, possible_target, reg_def_use.live_var_def, possible_target_from, reg_used_for, compare_and_jump_indirect_op_valid, __agg_single6, split_load, no_return_block, unresolved_block, reg_def_use.block_last_def, relative_jump_table_entry_candidate, __agg_subclause6, litpool_symbolic_operand, next_end, unresolved_interval_order, compare_and_jump_register, stack_def_use.live_var_at_prior_used, call_tls_get_addr, nop_in_padding_candidate, known_block, is_padding, likely_fallthrough, tls_get_addr, local_dynamic_tls_candidate, correlated_live_reg, value_reg_unsupported, code_in_block, arch.simple_data_load, overlap_with_litpool, padding_block_candidate, base_relative_operand, symbolic_expr_from_relocation, reg_def_use.last_def_in_block, reg_has_base_image, arm_jump_table_skip_first_entry, init_symbol_minus_symbol_candidate_arm, block, no_return_call_refined, tls_relative_operand_mips, discarded_split_load, reg_def_use.used, cmp_reg_to_reg, relocation_adjustment, unlikely_have_symbolic_immediate, reg_def_use.live_var_used, cmp_defines, jump_table_start, reg_def_use.def_used, wis_prior, call_tls_get_addr_mips, __agg_subclause3, start_function, stack_def_use.defined_in_block, contains_plausible_instr_seq, reg_def_use.return_block_end, next_start, inferred_main_dispatch, last_value_reg_limit, arm_jump_table_block_instruction, compare_and_jump_immediate, __agg_subclause7, gp_relative_operand, litpool_ref, wis_has_prior, contains_implausible_instr_seq, after_end, init_ldr_add_pc, unresolved_block_overlap, code_in_block_candidate, block_candidate_dependency_edge, split_load_conflict, reg_def_use.ref_in_block, inferred_main_in_reg, arch.extend_load, arm_jump_table_data_block_limit, reg_has_got, wis_schedule_iter, cinf_ldr_add_pc, arm_jump_table_block_start, flags_and_jump_pair, hi_load_prop, arm_jump_table_candidate_start, block_implies_block, symbol_minus_symbol_litpool_access_pattern, adrp_used, block_total_points, stack_def_use.live_var_at_block_end, stack_def_use.live_var_used, block_last_instruction, stack_def_use.last_def_in_block, got_relative_operand, incomplete_block, basic_target, transition_block_limit, block_heuristic, adjusts_stack_in_block, must_fallthrough, value_reg, jump_table_signed, value_reg_edge, split_load_for_symbolization, stack_def_use.live_var_def

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: block_points_proportional, next_type, reg_def_use.live_var_at_prior_used, relative_address, composite_data_access, block_limit, __agg_single2, no_return_call, __agg_subclause2, block_candidate_boundaries, instruction_memory_access_size, data_in_code, indexed_pc_relative_load, data_access, arm_jump_table_data_block, impossible_block, block_instruction_next, candidate_block_is_not_padding, invalid_jump_table_candidate, jump_table_target, function_inference.function_entry_initial, split_load_candidate, self_contained_segment, initialized_data_segment, base_relative_jump, split_load_point, __agg_single3, padding_block_limit, reg_reg_arithmetic_operation_defs, branch_to_calculated_pc_rel_addr, tls_desc_call, block_points, stack_base_reg_move, overlapping_instruction, wis_memo, stack_def_use.ref_in_block, __agg_subclause4, wis_schedule, simple_data_access_pattern, relative_address_start, compare_and_jump_indirect, reg_def_use.defined_in_block, jump_table_max, reg_def_use.ambiguous_last_def_in_block, value_reg_limit, stack_def_use.block_last_def, data_block_candidate, stack_def_use.def_used, reg_def_use.used_in_block, plt_block, data_block_limit, jump_table_element_access, data_segment, jump_table_candidate, split_load_operand, block_next, litpool_boundaries, invalid, jump_table_candidate_refined, arm_jump_table_cmp_limit, stack_def_use.live_var_used_in_block, litpool_confidence, segment_target_range, indexed_pc_relative_load_relative, block_overlap, negative_block_heuristic, jump_table_prelude, stack_def_use.used_in_block, reg_def_use.live_var_at_block_end, no_return_call_propagated, reg_def_use.return_val_used, data_in_code_propagate, straight_line_last_def, candidate_block_is_padding, base_relative_operation, arch.reg_relative_load, arm_jump_table_candidate, next_block_in_byte_interval, may_fallthrough, reg_def_use.ambiguous_block_last_def, __agg_single10, no_value_reg_limit, discarded_block, common_tail, unresolved_interval, block_boundaries, straight_line_def_used, inter_procedural_edge, relocation_adjustment_total, code_in_block_candidate_refined, const_value_reg_used, indefinite_litpool_ref, reg_def_use.flow_def, plt_entry, def_used_for_address, first_block_in_byte_interval, split_load_total_points, resolved_reaches, possible_target, reg_def_use.live_var_def, possible_target_from, reg_used_for, compare_and_jump_indirect_op_valid, __agg_single6, split_load, no_return_block, unresolved_block, reg_def_use.block_last_def, relative_jump_table_entry_candidate, __agg_subclause6, litpool_symbolic_operand, next_end, unresolved_interval_order, compare_and_jump_register, stack_def_use.live_var_at_prior_used, call_tls_get_addr, nop_in_padding_candidate, known_block, is_padding, likely_fallthrough, tls_get_addr, local_dynamic_tls_candidate, correlated_live_reg, value_reg_unsupported, code_in_block, arch.simple_data_load, overlap_with_litpool, padding_block_candidate, base_relative_operand, symbolic_expr_from_relocation, reg_def_use.last_def_in_block, reg_has_base_image, arm_jump_table_skip_first_entry, init_symbol_minus_symbol_candidate_arm, block, no_return_call_refined, tls_relative_operand_mips, discarded_split_load, reg_def_use.used, cmp_reg_to_reg, relocation_adjustment, unlikely_have_symbolic_immediate, reg_def_use.live_var_used, cmp_defines, jump_table_start, reg_def_use.def_used, wis_prior, call_tls_get_addr_mips, __agg_subclause3, start_function, stack_def_use.defined_in_block, contains_plausible_instr_seq, reg_def_use.return_block_end, next_start, inferred_main_dispatch, last_value_reg_limit, arm_jump_table_block_instruction, compare_and_jump_immediate, __agg_subclause7, gp_relative_operand, litpool_ref, wis_has_prior, contains_implausible_instr_seq, after_end, init_ldr_add_pc, unresolved_block_overlap, code_in_block_candidate, block_candidate_dependency_edge, split_load_conflict, reg_def_use.ref_in_block, inferred_main_in_reg, arch.extend_load, arm_jump_table_data_block_limit, reg_has_got, wis_schedule_iter, cinf_ldr_add_pc, arm_jump_table_block_start, flags_and_jump_pair, hi_load_prop, arm_jump_table_candidate_start, block_implies_block, symbol_minus_symbol_litpool_access_pattern, adrp_used, block_total_points, stack_def_use.live_var_at_block_end, stack_def_use.live_var_used, block_last_instruction, stack_def_use.last_def_in_block, got_relative_operand, incomplete_block, basic_target, transition_block_limit, block_heuristic, adjusts_stack_in_block, must_fallthrough, value_reg, jump_table_signed, value_reg_edge, split_load_for_symbolization, stack_def_use.live_var_def

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: code_in_refined_block, symbol_minus_symbol_candidate, jump_table, moved_label_candidate, discarded_jump_table_entry, moved_label, data_limit, next_data_limit, +disconnected6, block_needs_splitting_at, relative_jump_table_entry, data_object, best_func_symbol, symbolic_expr_attribute, symbol_score, after_address_in_data, string_candidate_refined, inferred_main_function, split_block, next_address_in_data, data_object_conflict, code_pointer_in_data, symbolic_data, address_array, symbol_minus_symbol_from_relocation, symbolic_expr, code_in_split_block, preferred_data_access, inferred_special_symbol, +disconnected2, function_inference.function_entry, +disconnected1, refined_block, data_object_point, got_reference, data_limit_after_access, discarded_data_object, block_needs_merging, labeled_data_candidate, moved_pc_relative_candidate, best_symexpr_symbol, boundary_sym_expr, address_array_aux, string_candidate, symbolic_operand_point, symbolic_operand_attribute, moved_displacement_candidate, data_access_limit, symbol_minus_symbol, labeled_ea, main_function, +disconnected4, resolved_transfer, inferred_symbol_mips, data_object_total_points, symbolic_operand, symbolic_expr_symbol_minus_symbol, inferred_symbol, moved_data_label, subsequent_string_candidate, data_object_candidate, label_conflict, value_reg_address_before

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