//===--- dwarf.h - Definitions of DWARF structures for import into Swift --===// // // This source file is part of the Swift.org open source project // // Copyright (c) 2022 Apple Inc. and the Swift project authors // Licensed under Apache License v2.0 with Runtime Library Exception // // See https://swift.org/LICENSE.txt for license information // See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors // //===----------------------------------------------------------------------===// // // Definitions of DWARF structures for import into Swift code // // The types here are taken from the DWARF 5 specification, from // // //===----------------------------------------------------------------------===// #ifndef SWIFT_DWARF_H #define SWIFT_DWARF_H #include #ifdef __cplusplus namespace swift { namespace runtime { #endif #pragma pack(push, 1) /* .. Useful macros ......................................................... */ #define DWARF_EXTENSIBLE_ENUM __attribute__((enum_extensibility(open))) #define DWARF_ENUM(t,n) \ enum DWARF_EXTENSIBLE_ENUM n: t #define DWARF_BYTECODE \ DWARF_EXTENSIBLE_ENUM : Dwarf_Byte /* .. Data Representation ................................................... */ // Common sizes (these don't change between 32-bit and 64-bit) typedef uint8_t Dwarf_Byte; typedef uint16_t Dwarf_Half; typedef uint32_t Dwarf_Word; typedef uint64_t Dwarf_Xword; typedef int8_t Dwarf_Sbyte; typedef int32_t Dwarf_Sword; typedef int64_t Dwarf_Sxword; // 32-bit sizes typedef uint32_t Dwarf32_Offset; typedef uint32_t Dwarf32_Size; typedef uint32_t Dwarf32_Length; // 0xfffffff0 and above are reserved // 64-bit sizes typedef uint64_t Dwarf64_Offset; typedef uint64_t Dwarf64_Size; typedef struct { uint32_t magic; // 0xffffffff means we're using 64-bit uint64_t length; } Dwarf64_Length; /* .. Unit Types ............................................................ */ // Table 7.2 typedef DWARF_ENUM(Dwarf_Byte, Dwarf_UnitType) { DW_UT_unknown = 0x00, DW_UT_compile = 0x01, DW_UT_type = 0x02, DW_UT_partial = 0x03, DW_UT_skeleton = 0x04, DW_UT_split_compile = 0x05, DW_UT_split_type = 0x06, DW_UT_lo_user = 0x80, DW_UT_hi_user = 0xff } Dwarf_UnitType; /* .. Tags .................................................................. */ // Table 7.3 typedef DWARF_ENUM(Dwarf_Xword, Dwarf_Tag) { DW_TAG_array_type = 0x01, DW_TAG_class_type = 0x02, DW_TAG_entry_point = 0x03, DW_TAG_enumeration_type = 0x04, DW_TAG_formal_parmeter = 0x05, // Reserved = 0x06, // Reserved = 0x07, DW_TAG_imported_declaration = 0x08, // Reserved = 0x09, DW_TAG_label = 0x0a, DW_TAG_lexical_block = 0x0b, // Reserved = 0x0c, DW_TAG_member = 0x0d, // Reserved = 0x0e, DW_TAG_pointer_type = 0x0f, DW_TAG_reference_type = 0x10, DW_TAG_compile_unit = 0x11, DW_TAG_string_type = 0x12, DW_TAG_structure_type = 0x13, // Reserved = 0x14, DW_TAG_subroutine_type = 0x15, DW_TAG_typedef = 0x16, DW_TAG_union_type = 0x17, DW_TAG_unspecified_parameters = 0x18, DW_TAG_variant = 0x19, DW_TAG_common_block = 0x1a, DW_TAG_common_inclusion = 0x1b, DW_TAG_inheritance = 0x1c, DW_TAG_inlined_subroutine = 0x1d, DW_TAG_module = 0x1e, DW_TAG_ptr_to_member_type = 0x1f, DW_TAG_set_type = 0x20, DW_TAG_subrange_type = 0x21, DW_TAG_with_stmt = 0x22, DW_TAG_access_declaration = 0x23, DW_TAG_base_type = 0x24, DW_TAG_catch_block = 0x25, DW_TAG_const_type = 0x26, DW_TAG_constant = 0x27, DW_TAG_enumerator = 0x28, DW_TAG_file_type = 0x29, DW_TAG_friend = 0x2a, DW_TAG_namelist = 0x2b, DW_TAG_namelist_item = 0x2c, DW_TAG_packed_type = 0x2d, DW_TAG_subprogram = 0x2e, DW_TAG_template_type_parameter = 0x2f, DW_TAG_template_value_parameter = 0x30, DW_TAG_thrown_type = 0x31, DW_TAG_try_block = 0x32, DW_TAG_variant_part = 0x33, DW_TAG_variable = 0x34, DW_TAG_volatile_type = 0x35, DW_TAG_dwarf_procedure = 0x36, DW_TAG_restrict_type = 0x37, DW_TAG_interface_type = 0x38, DW_TAG_namespace = 0x39, DW_TAG_imported_module = 0x3a, DW_TAG_unspecified_type = 0x3b, DW_TAG_partial_unit = 0x3c, DW_TAG_imported_unit = 0x3d, // Reserved = 0x3e, DW_TAG_condition = 0x3f, DW_TAG_shared_type = 0x40, DW_TAG_type_unit = 0x41, DW_TAG_rvalue_reference_type = 0x42, DW_TAG_template_alias = 0x43, DW_TAG_coarray_type = 0x44, DW_TAG_generic_subrange = 0x45, DW_TAG_dynamic_type = 0x46, DW_TAG_atomic_type = 0x47, DW_TAG_call_site = 0x48, DW_TAG_call_site_parameter = 0x49, DW_TAG_skeleton_unit = 0x4a, DW_TAG_immutable_type = 0x4b, DW_TAG_lo_user = 0x4080, DW_TAG_hi_user = 0xffff, } Dwarf_Tag; /* .. Child Determination Encodings ......................................... */ typedef DWARF_ENUM(Dwarf_Byte, Dwarf_ChildDetermination) { DW_CHILDREN_no = 0x00, DW_CHILDREN_yes = 0x01, } Dwarf_ChildDetermination; /* .. Attribute Encodings ................................................... */ // Table 7.5 typedef enum DWARF_EXTENSIBLE_ENUM Dwarf_Attribute { DW_AT_sibling = 0x01, // reference DW_AT_location = 0x02, // exprloc, loclist DW_AT_name = 0x03, // string // Reserved = 0x04, // not applicable // Reserved = 0x05, // not applicable // Reserved = 0x06, // not applicable // Reserved = 0x07, // not applicable // Reserved = 0x08, // not applicable DW_AT_ordering = 0x09, // constant // Reserved = 0x0a, // not applicable DW_AT_byte_size = 0x0b, // constant, exprloc, reference // Reserved = 0x0c2, // constant, exprloc, reference DW_AT_bit_size = 0x0d, // constant, exprloc, reference // Reserved = 0x0e, // not applicable // Reserved = 0x0f, // not applicable DW_AT_stmt_list = 0x10, // lineptr DW_AT_low_pc = 0x11, // address DW_AT_high_pc = 0x12, // address, constant DW_AT_language = 0x13, // constant // Reserved = 0x14, // not applicable DW_AT_discr = 0x15, // reference DW_AT_discr_value = 0x16, // constant DW_AT_visibility = 0x17, // constant DW_AT_import = 0x18, // reference DW_AT_string_length = 0x19, // exprloc, loclist, reference DW_AT_common_reference = 0x1a, // reference DW_AT_comp_dir = 0x1b, // string DW_AT_const_value = 0x1c, // block, constant, string DW_AT_containing_type = 0x1d, // reference DW_AT_default_value = 0x1e, // constant, reference, flag // Reserved = 0x1f, // not applicable DW_AT_inline = 0x20, // constant DW_AT_is_optional = 0x21, // flag DW_AT_lower_bound = 0x22, // constant, exprloc, reference // Reserved = 0x23, // not applicable // Reserved = 0x24, // not applicable DW_AT_producer = 0x25, // string // Reserved = 0x26, // not applicable DW_AT_prototyped = 0x27, // flag // Reserved = 0x28, // not applicable // Reserved = 0x29, // not applicable DW_AT_return_addr = 0x2a, // exprloc, loclist // Reserved = 0x2b, // not applicable DW_AT_start_scope = 0x2c, // constant, rnglist // Reserved = 0x2d, // not applicable DW_AT_bit_stride = 0x2e, // constant, exprloc, reference DW_AT_upper_bound = 0x2f, // constant, exprloc, reference // Reserved = 0x30, // not applicable DW_AT_abstract_origin = 0x31, // reference DW_AT_accessibility = 0x32, // constant DW_AT_address_class = 0x33, // constant DW_AT_artificial = 0x34, // flag DW_AT_base_types = 0x35, // reference DW_AT_calling_convention = 0x36, // constant DW_AT_count = 0x37, // constant, exprloc, reference DW_AT_data_member_location = 0x38, // constant, exprloc, loclist DW_AT_decl_column = 0x39, // constant DW_AT_decl_file = 0x3a, // constant DW_AT_decl_line = 0x3b, // constant DW_AT_declaration = 0x3c, // flag DW_AT_discr_list = 0x3d, // block DW_AT_encoding = 0x3e, // constant DW_AT_external = 0x3f, // flag DW_AT_frame_base = 0x40, // exprloc, loclist DW_AT_friend = 0x41, // reference DW_AT_identifier_case = 0x42, // constant // Reserved = 0x43, // macptr DW_AT_namelist_item = 0x44, // reference DW_AT_priority = 0x45, // reference DW_AT_segment = 0x46, // exprloc, loclist DW_AT_specification = 0x47, // reference DW_AT_static_link = 0x48, // exprloc, loclist DW_AT_type = 0x49, // reference DW_AT_use_location = 0x4a, // exprloc, loclist DW_AT_variable_parameter = 0x4b, // flag DW_AT_virtuality = 0x4c, // constant DW_AT_vtable_elem_location = 0x4d, // exprloc, loclist DW_AT_allocated = 0x4e, // constant, exprloc, reference DW_AT_associated = 0x4f, // constant, exprloc, reference DW_AT_data_location = 0x50, // exprloc DW_AT_byte_stride = 0x51, // constant, exprloc, reference DW_AT_entry_pc = 0x52, // address, constant DW_AT_use_UTF8 = 0x53, // flag DW_AT_extension = 0x54, // reference DW_AT_ranges = 0x55, // rnglist DW_AT_trampoline = 0x56, // address, flag, reference, string DW_AT_call_column = 0x57, // constant DW_AT_call_file = 0x58, // constant DW_AT_call_line = 0x59, // constant DW_AT_description = 0x5a, // string DW_AT_binary_scale = 0x5b, // constant DW_AT_decimal_scale = 0x5c, // constant DW_AT_small = 0x5d, // reference DW_AT_decimal_sign = 0x5e, // constant DW_AT_digit_count = 0x5f, // constant DW_AT_picture_string = 0x60, // string DW_AT_mutable = 0x61, // flag DW_AT_threads_scaled = 0x62, // flag DW_AT_explicit = 0x63, // flag DW_AT_object_pointer = 0x64, // reference DW_AT_endianity = 0x65, // constant DW_AT_elemental = 0x66, // flag DW_AT_pure = 0x67, // flag DW_AT_recursive = 0x68, // flag DW_AT_signature = 0x69, // reference DW_AT_main_subprogram = 0x6a, // flag DW_AT_data_bit_offset = 0x6b, // constant DW_AT_const_expr = 0x6c, // flag DW_AT_enum_class = 0x6d, // flag DW_AT_linkage_name = 0x6e, // string DW_AT_string_length_bit_size = 0x6f, // constant DW_AT_string_length_byte_size = 0x70, // constant DW_AT_rank = 0x71, // constant, exprloc DW_AT_str_offsets_base = 0x72, // stroffsetsptr DW_AT_addr_base = 0x73, // addrptr DW_AT_rnglists_base = 0x74, // rnglistsptr // Reserved = 0x75, // Unused DW_AT_dwo_name = 0x76, // string DW_AT_reference = 0x77, // flag DW_AT_rvalue_reference = 0x78, // flag DW_AT_macros = 0x79, // macptr DW_AT_call_all_calls = 0x7a, // flag DW_AT_call_all_source_calls = 0x7b, // flag DW_AT_call_all_tail_calls = 0x7c, // flag DW_AT_call_return_pc = 0x7d, // address DW_AT_call_value = 0x7e, // exprloc DW_AT_call_origin = 0x7f, // exprloc DW_AT_call_parameter = 0x80, // reference DW_AT_call_pc = 0x81, // address DW_AT_call_tail_call = 0x82, // flag DW_AT_call_target = 0x83, // exprloc DW_AT_call_target_clobbered = 0x84, // exprloc DW_AT_call_data_location = 0x85, // exprloc DW_AT_call_data_value = 0x86, // exprloc DW_AT_noreturn = 0x87, // flag DW_AT_alignment = 0x88, // constant DW_AT_export_symbols = 0x89, // flag DW_AT_deleted = 0x8a, // flag DW_AT_defaulted = 0x8b, // constant DW_AT_loclists_base = 0x8c, // loclistsptr DW_AT_lo_user = 0x2000, // — DW_AT_hi_user = 0x3fff, // — } Dwarf_Attribute; /* .. Form Encodings ........................................................ */ // Table 7.6 typedef DWARF_ENUM(Dwarf_Byte, Dwarf_Form) { DW_FORM_addr = 0x01, // Reserved = 0x02, DW_FORM_block2 = 0x03, DW_FORM_block4 = 0x04, DW_FORM_data2 = 0x05, DW_FORM_data4 = 0x06, DW_FORM_data8 = 0x07, DW_FORM_string = 0x08, DW_FORM_block = 0x09, DW_FORM_block1 = 0x0a, DW_FORM_data1 = 0x0b, DW_FORM_flag = 0x0c, DW_FORM_sdata = 0x0d, DW_FORM_strp = 0x0e, DW_FORM_udata = 0x0f, DW_FORM_ref_addr = 0x10, DW_FORM_ref1 = 0x11, DW_FORM_ref2 = 0x12, DW_FORM_ref4 = 0x13, DW_FORM_ref8 = 0x14, DW_FORM_ref_udata = 0x15, DW_FORM_indirect = 0x16, DW_FORM_sec_offset = 0x17, DW_FORM_exprloc = 0x18, DW_FORM_flag_present = 0x19, DW_FORM_strx = 0x1a, DW_FORM_addrx = 0x1b, DW_FORM_ref_sup4 = 0x1c, DW_FORM_strp_sup = 0x1d, DW_FORM_data16 = 0x1e, DW_FORM_line_strp = 0x1f, DW_FORM_ref_sig8 = 0x20, DW_FORM_implicit_const = 0x21, DW_FORM_loclistx = 0x22, DW_FORM_rnglistx = 0x23, DW_FORM_ref_sup8 = 0x24, DW_FORM_strx1 = 0x25, DW_FORM_strx2 = 0x26, DW_FORM_strx3 = 0x27, DW_FORM_strx4 = 0x28, DW_FORM_addrx1 = 0x29, DW_FORM_addrx2 = 0x2a, DW_FORM_addrx3 = 0x2b, DW_FORM_addrx4 = 0x2c, } Dwarf_Form; /* .. DWARF Expressions ..................................................... */ // Table 7.9 enum DWARF_BYTECODE { // Reserved = 0x01, // Reserved = 0x02, DW_OP_addr = 0x03, // Reserved = 0x04, // Reserved = 0x05, DW_OP_deref = 0x06, // Reserved = 0x07, DW_OP_const1u = 0x08, DW_OP_const1s = 0x09, DW_OP_const2u = 0x0a, DW_OP_const2s = 0x0b, DW_OP_const4u = 0x0c, DW_OP_const4s = 0x0d, DW_OP_const8u = 0x0e, DW_OP_const8s = 0x0f, DW_OP_constu = 0x10, DW_OP_consts = 0x11, DW_OP_dup = 0x12, DW_OP_drop = 0x13, DW_OP_over = 0x14, DW_OP_pick = 0x15, DW_OP_swap = 0x16, DW_OP_rot = 0x17, DW_OP_xderef = 0x18, DW_OP_abs = 0x19, DW_OP_and = 0x1a, DW_OP_div = 0x1b, DW_OP_minus = 0x1c, DW_OP_mod = 0x1d, DW_OP_mul = 0x1e, DW_OP_neg = 0x1f, DW_OP_not = 0x20, DW_OP_or = 0x21, DW_OP_plus = 0x22, DW_OP_plus_uconst = 0x23, DW_OP_shl = 0x24, DW_OP_shr = 0x25, DW_OP_shra = 0x26, DW_OP_xor = 0x27, DW_OP_bra = 0x28, DW_OP_eq = 0x29, DW_OP_ge = 0x2a, DW_OP_gt = 0x2b, DW_OP_le = 0x2c, DW_OP_lt = 0x2d, DW_OP_ne = 0x2e, DW_OP_skip = 0x2f, DW_OP_lit0 = 0x30, DW_OP_lit1 = 0x31, DW_OP_lit2 = 0x32, DW_OP_lit3 = 0x33, DW_OP_lit4 = 0x34, DW_OP_lit5 = 0x35, DW_OP_lit6 = 0x36, DW_OP_lit7 = 0x37, DW_OP_lit8 = 0x38, DW_OP_lit9 = 0x39, DW_OP_lit10 = 0x3a, DW_OP_lit11 = 0x3b, DW_OP_lit12 = 0x3c, DW_OP_lit13 = 0x3d, DW_OP_lit14 = 0x3e, DW_OP_lit15 = 0x3f, DW_OP_lit16 = 0x40, DW_OP_lit17 = 0x41, DW_OP_lit18 = 0x42, DW_OP_lit19 = 0x43, DW_OP_lit20 = 0x44, DW_OP_lit21 = 0x45, DW_OP_lit22 = 0x46, DW_OP_lit23 = 0x47, DW_OP_lit24 = 0x48, DW_OP_lit25 = 0x49, DW_OP_lit26 = 0x4a, DW_OP_lit27 = 0x4b, DW_OP_lit28 = 0x4c, DW_OP_lit29 = 0x4d, DW_OP_lit30 = 0x4e, DW_OP_lit31 = 0x4f, DW_OP_reg0 = 0x50, DW_OP_reg1 = 0x51, DW_OP_reg2 = 0x52, DW_OP_reg3 = 0x53, DW_OP_reg4 = 0x54, DW_OP_reg5 = 0x55, DW_OP_reg6 = 0x56, DW_OP_reg7 = 0x57, DW_OP_reg8 = 0x58, DW_OP_reg9 = 0x59, DW_OP_reg10 = 0x5a, DW_OP_reg11 = 0x5b, DW_OP_reg12 = 0x5c, DW_OP_reg13 = 0x5d, DW_OP_reg14 = 0x5e, DW_OP_reg15 = 0x5f, DW_OP_reg16 = 0x60, DW_OP_reg17 = 0x61, DW_OP_reg18 = 0x62, DW_OP_reg19 = 0x63, DW_OP_reg20 = 0x64, DW_OP_reg21 = 0x65, DW_OP_reg22 = 0x66, DW_OP_reg23 = 0x67, DW_OP_reg24 = 0x68, DW_OP_reg25 = 0x69, DW_OP_reg26 = 0x6a, DW_OP_reg27 = 0x6b, DW_OP_reg28 = 0x6c, DW_OP_reg29 = 0x6d, DW_OP_reg30 = 0x6e, DW_OP_reg31 = 0x6f, DW_OP_breg0 = 0x70, DW_OP_breg1 = 0x71, DW_OP_breg2 = 0x72, DW_OP_breg3 = 0x73, DW_OP_breg4 = 0x74, DW_OP_breg5 = 0x75, DW_OP_breg6 = 0x76, DW_OP_breg7 = 0x77, DW_OP_breg8 = 0x78, DW_OP_breg9 = 0x79, DW_OP_breg10 = 0x7a, DW_OP_breg11 = 0x7b, DW_OP_breg12 = 0x7c, DW_OP_breg13 = 0x7d, DW_OP_breg14 = 0x7e, DW_OP_breg15 = 0x7f, DW_OP_breg16 = 0x80, DW_OP_breg17 = 0x81, DW_OP_breg18 = 0x82, DW_OP_breg19 = 0x83, DW_OP_breg20 = 0x84, DW_OP_breg21 = 0x85, DW_OP_breg22 = 0x86, DW_OP_breg23 = 0x87, DW_OP_breg24 = 0x88, DW_OP_breg25 = 0x89, DW_OP_breg26 = 0x8a, DW_OP_breg27 = 0x8b, DW_OP_breg28 = 0x8c, DW_OP_breg29 = 0x8d, DW_OP_breg30 = 0x8e, DW_OP_breg31 = 0x8f, DW_OP_regx = 0x90, DW_OP_fbreg = 0x91, DW_OP_bregx = 0x92, DW_OP_piece = 0x93, DW_OP_deref_size = 0x94, DW_OP_xderef_size = 0x95, DW_OP_nop = 0x96, DW_OP_push_object_address = 0x97, DW_OP_call2 = 0x98, DW_OP_call4 = 0x99, DW_OP_call_ref = 0x9a, DW_OP_form_tls_address = 0x9b, DW_OP_call_frame_cfa = 0x9c, DW_OP_bit_piece = 0x9d, DW_OP_implicit_value = 0x9e, DW_OP_stack_value = 0x9f, DW_OP_implicit_pointer = 0xa0, DW_OP_addrx = 0xa1, DW_OP_constx = 0xa2, DW_OP_entry_value = 0xa3, DW_OP_const_type = 0xa4, DW_OP_regval_type = 0xa5, DW_OP_deref_type = 0xa6, DW_OP_xderef_type = 0xa7, DW_OP_convert = 0xa8, DW_OP_reinterpret = 0xa9, DW_OP_lo_user = 0xe0, DW_OP_hi_user = 0xff, }; /* .. Line Number Information ............................................... */ // Table 7.25 typedef DWARF_ENUM(Dwarf_Byte, Dwarf_LNS_Opcode) { DW_LNS_extended = 0x00, DW_LNS_copy = 0x01, DW_LNS_advance_pc = 0x02, DW_LNS_advance_line = 0x03, DW_LNS_set_file = 0x04, DW_LNS_set_column = 0x05, DW_LNS_negate_stmt = 0x06, DW_LNS_set_basic_block = 0x07, DW_LNS_const_add_pc = 0x08, DW_LNS_fixed_advance_pc = 0x09, DW_LNS_set_prologue_end = 0x0a, DW_LNS_set_epilogue_begin = 0x0b, DW_LNS_set_isa = 0x0c, } Dwarf_LNS_Opcode; // Table 7.26 typedef DWARF_ENUM(Dwarf_Byte, Dwarf_LNE_Opcode) { DW_LNE_end_sequence = 0x01, DW_LNE_set_address = 0x02, DW_LNE_define_file = 0x03, DW_LNE_set_discriminator = 0x04, DW_LNE_lo_user = 0x80, DW_LNE_hi_user = 0xff, } Dwarf_LNE_Opcode; // Table 7.27 typedef DWARF_ENUM(Dwarf_Half, Dwarf_Lhdr_Format) { DW_LNCT_path = 0x0001, DW_LNCT_directory_index = 0x0002, DW_LNCT_timestamp = 0x0003, DW_LNCT_size = 0x0004, DW_LNCT_MD5 = 0x0005, DW_LNCT_lo_user = 0x2000, DW_LNCT_hi_user = 0x3fff, } Dwarf_Lhdr_Format; // 6.2.4 The Line Number Program Header typedef struct { Dwarf32_Length length; Dwarf_Half version; Dwarf_Byte address_size; Dwarf_Byte segment_selector_size; Dwarf32_Size header_length; Dwarf_Byte minimum_instruction_length; Dwarf_Byte maximum_operations_per_instruction; Dwarf_Byte default_is_stmt; Dwarf_Sbyte line_base; Dwarf_Byte line_range; Dwarf_Byte opcode_base; // Variable length fields: // Dwarf_Byte standard_opcode_lengths[]; // Dwarf_Byte directory_entry_format_count; // Dwarf_ULEB128 directory_entry_format[]; // Dwarf_ULEB128 directories_count; // encoded directories[]; // Dwarf_Byte file_name_entry_format_count; // Dwarf_ULEB128 file_name_entry_format; // Dwarf_ULEB128 file_names_count; // encoded file_names[]; } DWARF32_Lhdr; typedef struct { Dwarf64_Length length; Dwarf_Half version; Dwarf_Byte address_size; Dwarf_Byte segment_selector_size; Dwarf64_Size header_length; Dwarf_Byte minimum_instruction_length; Dwarf_Byte maximum_operations_per_instruction; Dwarf_Byte default_is_stmt; Dwarf_Sbyte line_base; Dwarf_Byte line_range; Dwarf_Byte opcode_base; // Variable length fields: // Dwarf_Byte standard_opcode_lengths[]; // Dwarf_Byte directory_entry_format_count; // Dwarf_ULEB128 directory_entry_format[]; // Dwarf_ULEB128 directories_count; // encoded directories[]; // Dwarf_Byte file_name_entry_format_count; // Dwarf_ULEB128 file_name_entry_format; // Dwarf_ULEB128 file_names_count; // encoded file_names[]; } DWARF64_Lhdr; /* .. Call frame instruction encodings ...................................... */ // Table 7.29 enum DWARF_BYTECODE { DW_CFA_advance_loc = 0x40, DW_CFA_offset = 0x80, DW_CFA_restore = 0xc0, DW_CFA_nop = 0x00, DW_CFA_set_loc = 0x01, DW_CFA_advance_loc1 = 0x02, DW_CFA_advance_loc2 = 0x03, DW_CFA_advance_loc4 = 0x04, DW_CFA_offset_extended = 0x05, DW_CFA_restore_extended = 0x06, DW_CFA_undefined = 0x07, DW_CFA_same_value = 0x08, DW_CFA_register = 0x09, DW_CFA_remember_state = 0x0a, DW_CFA_restore_state = 0x0b, DW_CFA_def_cfa = 0x0c, DW_CFA_def_cfa_register = 0x0d, DW_CFA_def_cfa_offset = 0x0e, DW_CFA_def_cfa_expression = 0x0f, DW_CFA_expression = 0x10, DW_CFA_offset_extended_sf = 0x11, DW_CFA_def_cfa_sf = 0x12, DW_CFA_def_cfa_offset_sf = 0x13, DW_CFA_val_offset = 0x14, DW_CFA_val_offset_sf = 0x15, DW_CFA_val_expression = 0x16, DW_CFA_lo_user = 0x1c, DW_CFA_hi_user = 0x3f }; /* .. Range list encodings .................................................. */ // Table 7.30 typedef DWARF_ENUM(Dwarf_Byte, Dwarf_RLE_Entry) { DW_RLE_end_of_list = 0x00, DW_RLE_base_addressx = 0x01, DW_RLE_startx_endx = 0x02, DW_RLE_startx_length = 0x03, DW_RLE_offset_pair = 0x04, DW_RLE_base_address = 0x05, DW_RLE_start_end = 0x06, DW_RLE_start_length = 0x07 } Dwarf_RLE_Entry; /* .. Common Information Entry .............................................. */ // Table 4.5: Common Information Entry (CIE) typedef struct { Dwarf32_Length length; Dwarf32_Offset CIE_id; Dwarf_Byte version; // Followed by variable length fields as follows: // // Dwarf_Byte augmentation[]; // NUL terminated string // Dwarf_Byte address_size; // Dwarf_Byte segment_selector_size; // Dwarf_ULEB128 code_alignment_factor; // Dwarf_SLEB128 data_alignment_factor; // Dwarf_ULEB128 return_address_register; // Dwarf_Byte initial_instructions[]; // Dwarf_Byte padding[] } Dwarf32_CIEHdr; typedef struct { Dwarf64_Length length; Dwarf64_Offset CIE_id; Dwarf_Byte version; // Followed by variable length fields as follows: // // Dwarf_Byte augmentation[]; // NUL terminated string // Dwarf_Byte address_size; // Dwarf_Byte segment_selector_size; // Dwarf_ULEB128 code_alignment_factor; // Dwarf_SLEB128 data_alignment_factor; // Dwarf_ULEB128 return_address_register; // Dwarf_Byte initial_instructions[]; // Dwarf_Byte padding[] } Dwarf64_CIEHdr; /* .. Frame Descriptor Entry ................................................ */ // Table 4.7: Frame Descriptor Entry (FDE) typedef struct { Dwarf32_Length length; Dwarf32_Offset CIE_pointer; // Offset into the section that points at CIE // Followed by variable fields as follows: // // Dwarf_FarAddr initial_location; // May include segment selector and address // Dwarf_Addr address_range; // Number of bytes of instructions // Dwarf_Byte instructions[]; // Dwarf_Byte padding[]; } Dwarf32_FDEHdr; #pragma pack(pop) #ifdef __cplusplus } // namespace runtime } // namespace swift #endif #endif // SWIFT_DWARF_H