Imported Upstream version 1.1.0upstream/1.1.0

1 files changed, 711 insertions, 0 deletions

diff --git a/src/inc/llvm/Dwarf.h b/src/inc/llvm/Dwarf.h
new file mode 100644
index 0000000000..5fa73e931c
--- /dev/null
+++ b/src/inc/llvm/Dwarf.h
@@ -0,0 +1,711 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+// ==============================================================================
+// LLVM Release License
+// ==============================================================================
+// University of Illinois/NCSA
+// Open Source License
+//
+// Copyright (c) 2003-2015 University of Illinois at Urbana-Champaign.
+// All rights reserved.
+//
+// Developed by:
+//
+//     LLVM Team
+//
+//     University of Illinois at Urbana-Champaign
+//
+//     http://llvm.org
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy of
+// this software and associated documentation files (the "Software"), to deal with
+// the Software without restriction, including without limitation the rights to
+// use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
+// of the Software, and to permit persons to whom the Software is furnished to do
+// so, subject to the following conditions:
+//
+//     * Redistributions of source code must retain the above copyright notice,
+//       this list of conditions and the following disclaimers.
+//
+//     * Redistributions in binary form must reproduce the above copyright notice,
+//       this list of conditions and the following disclaimers in the
+//       documentation and/or other materials provided with the distribution.
+//
+//     * Neither the names of the LLVM Team, University of Illinois at
+//       Urbana-Champaign, nor the names of its contributors may be used to
+//       endorse or promote products derived from this Software without specific
+//       prior written permission.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+// FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
+// CONTRIBUTORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS WITH THE
+// SOFTWARE.
+
+//===----------------------------------------------------------------------===//
+//
+// \file
+// \brief This file contains constants used for implementing Dwarf
+// debug support.
+//
+// For details on the Dwarf specfication see the latest DWARF Debugging
+// Information Format standard document on http://www.dwarfstd.org. This
+// file often includes support for non-released standard features.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_SUPPORT_DWARF_H
+#define LLVM_SUPPORT_DWARF_H
+
+//===----------------------------------------------------------------------===//
+// Dwarf constants as gleaned from the DWARF Debugging Information Format V.4
+// reference manual http://www.dwarfstd.org/.
+//
+
+// Do not mix the following two enumerations sets.  DW_TAG_invalid changes the
+// enumeration base type.
+
+enum LLVMConstants : uint32_t {
+  // LLVM mock tags (see also llvm/Support/Dwarf.def).
+  DW_TAG_invalid = ~0U,        // Tag for invalid results.
+  DW_VIRTUALITY_invalid = ~0U, // Virtuality for invalid results.
+  DW_MACINFO_invalid = ~0U,    // Macinfo type for invalid results.
+
+  // Other constants.
+  DWARF_VERSION = 4,       // Default dwarf version we output.
+  DW_PUBTYPES_VERSION = 2, // Section version number for .debug_pubtypes.
+  DW_PUBNAMES_VERSION = 2, // Section version number for .debug_pubnames.
+  DW_ARANGES_VERSION = 2   // Section version number for .debug_aranges.
+};
+
+// Special ID values that distinguish a CIE from a FDE in DWARF CFI.
+// Not inside an enum because a 64-bit value is needed.
+const uint32_t DW_CIE_ID = UINT32_MAX;
+const uint64_t DW64_CIE_ID = UINT64_MAX;
+
+enum Tag : uint16_t {
+#define HANDLE_DW_TAG(ID, NAME) DW_TAG_##NAME = ID,
+#include "Dwarf.def"
+  DW_TAG_lo_user = 0x4080,
+  DW_TAG_hi_user = 0xffff,
+  DW_TAG_user_base = 0x1000 // Recommended base for user tags.
+};
+
+inline bool isType(Tag T) {
+  switch (T) {
+  case DW_TAG_array_type:
+  case DW_TAG_class_type:
+  case DW_TAG_interface_type:
+  case DW_TAG_enumeration_type:
+  case DW_TAG_pointer_type:
+  case DW_TAG_reference_type:
+  case DW_TAG_rvalue_reference_type:
+  case DW_TAG_string_type:
+  case DW_TAG_structure_type:
+  case DW_TAG_subroutine_type:
+  case DW_TAG_union_type:
+  case DW_TAG_ptr_to_member_type:
+  case DW_TAG_set_type:
+  case DW_TAG_subrange_type:
+  case DW_TAG_base_type:
+  case DW_TAG_const_type:
+  case DW_TAG_file_type:
+  case DW_TAG_packed_type:
+  case DW_TAG_volatile_type:
+  case DW_TAG_typedef:
+    return true;
+  default:
+    return false;
+  }
+}
+
+enum Attribute : uint16_t {
+  // Attributes
+  DW_AT_sibling = 0x01,
+  DW_AT_location = 0x02,
+  DW_AT_name = 0x03,
+  DW_AT_ordering = 0x09,
+  DW_AT_byte_size = 0x0b,
+  DW_AT_bit_offset = 0x0c,
+  DW_AT_bit_size = 0x0d,
+  DW_AT_stmt_list = 0x10,
+  DW_AT_low_pc = 0x11,
+  DW_AT_high_pc = 0x12,
+  DW_AT_language = 0x13,
+  DW_AT_discr = 0x15,
+  DW_AT_discr_value = 0x16,
+  DW_AT_visibility = 0x17,
+  DW_AT_import = 0x18,
+  DW_AT_string_length = 0x19,
+  DW_AT_common_reference = 0x1a,
+  DW_AT_comp_dir = 0x1b,
+  DW_AT_const_value = 0x1c,
+  DW_AT_containing_type = 0x1d,
+  DW_AT_default_value = 0x1e,
+  DW_AT_inline = 0x20,
+  DW_AT_is_optional = 0x21,
+  DW_AT_lower_bound = 0x22,
+  DW_AT_producer = 0x25,
+  DW_AT_prototyped = 0x27,
+  DW_AT_return_addr = 0x2a,
+  DW_AT_start_scope = 0x2c,
+  DW_AT_bit_stride = 0x2e,
+  DW_AT_upper_bound = 0x2f,
+  DW_AT_abstract_origin = 0x31,
+  DW_AT_accessibility = 0x32,
+  DW_AT_address_class = 0x33,
+  DW_AT_artificial = 0x34,
+  DW_AT_base_types = 0x35,
+  DW_AT_calling_convention = 0x36,
+  DW_AT_count = 0x37,
+  DW_AT_data_member_location = 0x38,
+  DW_AT_decl_column = 0x39,
+  DW_AT_decl_file = 0x3a,
+  DW_AT_decl_line = 0x3b,
+  DW_AT_declaration = 0x3c,
+  DW_AT_discr_list = 0x3d,
+  DW_AT_encoding = 0x3e,
+  DW_AT_external = 0x3f,
+  DW_AT_frame_base = 0x40,
+  DW_AT_friend = 0x41,
+  DW_AT_identifier_case = 0x42,
+  DW_AT_macro_info = 0x43,
+  DW_AT_namelist_item = 0x44,
+  DW_AT_priority = 0x45,
+  DW_AT_segment = 0x46,
+  DW_AT_specification = 0x47,
+  DW_AT_static_link = 0x48,
+  DW_AT_type = 0x49,
+  DW_AT_use_location = 0x4a,
+  DW_AT_variable_parameter = 0x4b,
+  DW_AT_virtuality = 0x4c,
+  DW_AT_vtable_elem_location = 0x4d,
+  DW_AT_allocated = 0x4e,
+  DW_AT_associated = 0x4f,
+  DW_AT_data_location = 0x50,
+  DW_AT_byte_stride = 0x51,
+  DW_AT_entry_pc = 0x52,
+  DW_AT_use_UTF8 = 0x53,
+  DW_AT_extension = 0x54,
+  DW_AT_ranges = 0x55,
+  DW_AT_trampoline = 0x56,
+  DW_AT_call_column = 0x57,
+  DW_AT_call_file = 0x58,
+  DW_AT_call_line = 0x59,
+  DW_AT_description = 0x5a,
+  DW_AT_binary_scale = 0x5b,
+  DW_AT_decimal_scale = 0x5c,
+  DW_AT_small = 0x5d,
+  DW_AT_decimal_sign = 0x5e,
+  DW_AT_digit_count = 0x5f,
+  DW_AT_picture_string = 0x60,
+  DW_AT_mutable = 0x61,
+  DW_AT_threads_scaled = 0x62,
+  DW_AT_explicit = 0x63,
+  DW_AT_object_pointer = 0x64,
+  DW_AT_endianity = 0x65,
+  DW_AT_elemental = 0x66,
+  DW_AT_pure = 0x67,
+  DW_AT_recursive = 0x68,
+  DW_AT_signature = 0x69,
+  DW_AT_main_subprogram = 0x6a,
+  DW_AT_data_bit_offset = 0x6b,
+  DW_AT_const_expr = 0x6c,
+  DW_AT_enum_class = 0x6d,
+  DW_AT_linkage_name = 0x6e,
+
+  // New in DWARF 5:
+  DW_AT_string_length_bit_size = 0x6f,
+  DW_AT_string_length_byte_size = 0x70,
+  DW_AT_rank = 0x71,
+  DW_AT_str_offsets_base = 0x72,
+  DW_AT_addr_base = 0x73,
+  DW_AT_ranges_base = 0x74,
+  DW_AT_dwo_id = 0x75,
+  DW_AT_dwo_name = 0x76,
+  DW_AT_reference = 0x77,
+  DW_AT_rvalue_reference = 0x78,
+  DW_AT_macros = 0x79,
+
+  DW_AT_lo_user = 0x2000,
+  DW_AT_hi_user = 0x3fff,
+
+  DW_AT_MIPS_loop_begin = 0x2002,
+  DW_AT_MIPS_tail_loop_begin = 0x2003,
+  DW_AT_MIPS_epilog_begin = 0x2004,
+  DW_AT_MIPS_loop_unroll_factor = 0x2005,
+  DW_AT_MIPS_software_pipeline_depth = 0x2006,
+  DW_AT_MIPS_linkage_name = 0x2007,
+  DW_AT_MIPS_stride = 0x2008,
+  DW_AT_MIPS_abstract_name = 0x2009,
+  DW_AT_MIPS_clone_origin = 0x200a,
+  DW_AT_MIPS_has_inlines = 0x200b,
+  DW_AT_MIPS_stride_byte = 0x200c,
+  DW_AT_MIPS_stride_elem = 0x200d,
+  DW_AT_MIPS_ptr_dopetype = 0x200e,
+  DW_AT_MIPS_allocatable_dopetype = 0x200f,
+  DW_AT_MIPS_assumed_shape_dopetype = 0x2010,
+
+  // This one appears to have only been implemented by Open64 for
+  // fortran and may conflict with other extensions.
+  DW_AT_MIPS_assumed_size = 0x2011,
+
+  // GNU extensions
+  DW_AT_sf_names = 0x2101,
+  DW_AT_src_info = 0x2102,
+  DW_AT_mac_info = 0x2103,
+  DW_AT_src_coords = 0x2104,
+  DW_AT_body_begin = 0x2105,
+  DW_AT_body_end = 0x2106,
+  DW_AT_GNU_vector = 0x2107,
+  DW_AT_GNU_template_name = 0x2110,
+
+  DW_AT_GNU_odr_signature = 0x210f,
+  DW_AT_GNU_macros = 0x2119,
+
+  // Extensions for Fission proposal.
+  DW_AT_GNU_dwo_name = 0x2130,
+  DW_AT_GNU_dwo_id = 0x2131,
+  DW_AT_GNU_ranges_base = 0x2132,
+  DW_AT_GNU_addr_base = 0x2133,
+  DW_AT_GNU_pubnames = 0x2134,
+  DW_AT_GNU_pubtypes = 0x2135,
+  DW_AT_GNU_discriminator = 0x2136,
+
+  // Borland extensions.
+  DW_AT_BORLAND_property_read = 0x3b11,
+  DW_AT_BORLAND_property_write = 0x3b12,
+  DW_AT_BORLAND_property_implements = 0x3b13,
+  DW_AT_BORLAND_property_index = 0x3b14,
+  DW_AT_BORLAND_property_default = 0x3b15,
+  DW_AT_BORLAND_Delphi_unit = 0x3b20,
+  DW_AT_BORLAND_Delphi_class = 0x3b21,
+  DW_AT_BORLAND_Delphi_record = 0x3b22,
+  DW_AT_BORLAND_Delphi_metaclass = 0x3b23,
+  DW_AT_BORLAND_Delphi_constructor = 0x3b24,
+  DW_AT_BORLAND_Delphi_destructor = 0x3b25,
+  DW_AT_BORLAND_Delphi_anonymous_method = 0x3b26,
+  DW_AT_BORLAND_Delphi_interface = 0x3b27,
+  DW_AT_BORLAND_Delphi_ABI = 0x3b28,
+  DW_AT_BORLAND_Delphi_return = 0x3b29,
+  DW_AT_BORLAND_Delphi_frameptr = 0x3b30,
+  DW_AT_BORLAND_closure = 0x3b31,
+
+  // LLVM project extensions.
+  DW_AT_LLVM_include_path = 0x3e00,
+  DW_AT_LLVM_config_macros = 0x3e01,
+  DW_AT_LLVM_isysroot = 0x3e02,
+
+  // Apple extensions.
+  DW_AT_APPLE_optimized = 0x3fe1,
+  DW_AT_APPLE_flags = 0x3fe2,
+  DW_AT_APPLE_isa = 0x3fe3,
+  DW_AT_APPLE_block = 0x3fe4,
+  DW_AT_APPLE_major_runtime_vers = 0x3fe5,
+  DW_AT_APPLE_runtime_class = 0x3fe6,
+  DW_AT_APPLE_omit_frame_ptr = 0x3fe7,
+  DW_AT_APPLE_property_name = 0x3fe8,
+  DW_AT_APPLE_property_getter = 0x3fe9,
+  DW_AT_APPLE_property_setter = 0x3fea,
+  DW_AT_APPLE_property_attribute = 0x3feb,
+  DW_AT_APPLE_objc_complete_type = 0x3fec,
+  DW_AT_APPLE_property = 0x3fed
+};
+
+enum Form : uint16_t {
+  // Attribute form encodings
+  DW_FORM_addr = 0x01,
+  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_ref_sig8 = 0x20,
+
+  // Extensions for Fission proposal
+  DW_FORM_GNU_addr_index = 0x1f01,
+  DW_FORM_GNU_str_index = 0x1f02,
+
+  // Alternate debug sections proposal (output of "dwz" tool).
+  DW_FORM_GNU_ref_alt = 0x1f20,
+  DW_FORM_GNU_strp_alt = 0x1f21
+};
+
+enum LocationAtom {
+#define HANDLE_DW_OP(ID, NAME) DW_OP_##NAME = ID,
+#include "Dwarf.def"
+  DW_OP_lo_user = 0xe0,
+  DW_OP_hi_user = 0xff
+};
+
+enum TypeKind {
+#define HANDLE_DW_ATE(ID, NAME) DW_ATE_##NAME = ID,
+#include "Dwarf.def"
+  DW_ATE_lo_user = 0x80,
+  DW_ATE_hi_user = 0xff
+};
+
+enum DecimalSignEncoding {
+  // Decimal sign attribute values
+  DW_DS_unsigned = 0x01,
+  DW_DS_leading_overpunch = 0x02,
+  DW_DS_trailing_overpunch = 0x03,
+  DW_DS_leading_separate = 0x04,
+  DW_DS_trailing_separate = 0x05
+};
+
+enum EndianityEncoding {
+  // Endianity attribute values
+  DW_END_default = 0x00,
+  DW_END_big = 0x01,
+  DW_END_little = 0x02,
+  DW_END_lo_user = 0x40,
+  DW_END_hi_user = 0xff
+};
+
+enum AccessAttribute {
+  // Accessibility codes
+  DW_ACCESS_public = 0x01,
+  DW_ACCESS_protected = 0x02,
+  DW_ACCESS_private = 0x03
+};
+
+enum VisibilityAttribute {
+  // Visibility codes
+  DW_VIS_local = 0x01,
+  DW_VIS_exported = 0x02,
+  DW_VIS_qualified = 0x03
+};
+
+enum VirtualityAttribute {
+#define HANDLE_DW_VIRTUALITY(ID, NAME) DW_VIRTUALITY_##NAME = ID,
+#include "Dwarf.def"
+  DW_VIRTUALITY_max = 0x02
+};
+
+enum SourceLanguage {
+#define HANDLE_DW_LANG(ID, NAME) DW_LANG_##NAME = ID,
+#include "Dwarf.def"
+  DW_LANG_lo_user = 0x8000,
+  DW_LANG_hi_user = 0xffff
+};
+
+enum CaseSensitivity {
+  // Identifier case codes
+  DW_ID_case_sensitive = 0x00,
+  DW_ID_up_case = 0x01,
+  DW_ID_down_case = 0x02,
+  DW_ID_case_insensitive = 0x03
+};
+
+enum CallingConvention {
+  // Calling convention codes
+  DW_CC_normal = 0x01,
+  DW_CC_program = 0x02,
+  DW_CC_nocall = 0x03,
+  DW_CC_lo_user = 0x40,
+  DW_CC_GNU_borland_fastcall_i386 = 0x41,
+  DW_CC_BORLAND_safecall = 0xb0,
+  DW_CC_BORLAND_stdcall = 0xb1,
+  DW_CC_BORLAND_pascal = 0xb2,
+  DW_CC_BORLAND_msfastcall = 0xb3,
+  DW_CC_BORLAND_msreturn = 0xb4,
+  DW_CC_BORLAND_thiscall = 0xb5,
+  DW_CC_BORLAND_fastcall = 0xb6,
+  DW_CC_hi_user = 0xff
+};
+
+enum InlineAttribute {
+  // Inline codes
+  DW_INL_not_inlined = 0x00,
+  DW_INL_inlined = 0x01,
+  DW_INL_declared_not_inlined = 0x02,
+  DW_INL_declared_inlined = 0x03
+};
+
+enum ArrayDimensionOrdering {
+  // Array ordering
+  DW_ORD_row_major = 0x00,
+  DW_ORD_col_major = 0x01
+};
+
+enum DiscriminantList {
+  // Discriminant descriptor values
+  DW_DSC_label = 0x00,
+  DW_DSC_range = 0x01
+};
+
+enum LineNumberOps {
+  // Line Number Standard Opcode Encodings
+  DW_LNS_extended_op = 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
+};
+
+enum LineNumberExtendedOps {
+  // Line Number Extended Opcode Encodings
+  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
+};
+
+enum MacinfoRecordType {
+  // Macinfo Type Encodings
+  DW_MACINFO_define = 0x01,
+  DW_MACINFO_undef = 0x02,
+  DW_MACINFO_start_file = 0x03,
+  DW_MACINFO_end_file = 0x04,
+  DW_MACINFO_vendor_ext = 0xff
+};
+
+enum MacroEntryType {
+  // Macro Information Entry Type Encodings
+  DW_MACRO_define = 0x01,
+  DW_MACRO_undef = 0x02,
+  DW_MACRO_start_file = 0x03,
+  DW_MACRO_end_file = 0x04,
+  DW_MACRO_define_indirect = 0x05,
+  DW_MACRO_undef_indirect = 0x06,
+  DW_MACRO_transparent_include = 0x07,
+  DW_MACRO_define_indirect_sup = 0x08,
+  DW_MACRO_undef_indirect_sup = 0x09,
+  DW_MACRO_transparent_include_sup = 0x0a,
+  DW_MACRO_define_indirectx = 0x0b,
+  DW_MACRO_undef_indirectx = 0x0c,
+  DW_MACRO_lo_user = 0xe0,
+  DW_MACRO_hi_user = 0xff
+};
+
+enum CallFrameInfo {
+  // Call frame instruction encodings
+  DW_CFA_extended = 0x00,
+  DW_CFA_nop = 0x00,
+  DW_CFA_advance_loc = 0x40,
+  DW_CFA_offset = 0x80,
+  DW_CFA_restore = 0xc0,
+  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_MIPS_advance_loc8 = 0x1d,
+  DW_CFA_GNU_window_save = 0x2d,
+  DW_CFA_GNU_args_size = 0x2e,
+  DW_CFA_lo_user = 0x1c,
+  DW_CFA_hi_user = 0x3f
+};
+
+enum Constants {
+  // Children flag
+  DW_CHILDREN_no = 0x00,
+  DW_CHILDREN_yes = 0x01,
+
+  DW_EH_PE_absptr = 0x00,
+  DW_EH_PE_omit = 0xff,
+  DW_EH_PE_uleb128 = 0x01,
+  DW_EH_PE_udata2 = 0x02,
+  DW_EH_PE_udata4 = 0x03,
+  DW_EH_PE_udata8 = 0x04,
+  DW_EH_PE_sleb128 = 0x09,
+  DW_EH_PE_sdata2 = 0x0A,
+  DW_EH_PE_sdata4 = 0x0B,
+  DW_EH_PE_sdata8 = 0x0C,
+  DW_EH_PE_signed = 0x08,
+  DW_EH_PE_pcrel = 0x10,
+  DW_EH_PE_textrel = 0x20,
+  DW_EH_PE_datarel = 0x30,
+  DW_EH_PE_funcrel = 0x40,
+  DW_EH_PE_aligned = 0x50,
+  DW_EH_PE_indirect = 0x80
+};
+
+// Constants for debug_loc.dwo in the DWARF5 Split Debug Info Proposal
+enum LocationListEntry : unsigned char {
+  DW_LLE_end_of_list_entry,
+  DW_LLE_base_address_selection_entry,
+  DW_LLE_start_end_entry,
+  DW_LLE_start_length_entry,
+  DW_LLE_offset_pair_entry
+};
+
+/// Contstants for the DW_APPLE_PROPERTY_attributes attribute.
+/// Keep this list in sync with clang's DeclSpec.h ObjCPropertyAttributeKind.
+enum ApplePropertyAttributes {
+  // Apple Objective-C Property Attributes
+  DW_APPLE_PROPERTY_readonly = 0x01,
+  DW_APPLE_PROPERTY_getter = 0x02,
+  DW_APPLE_PROPERTY_assign = 0x04,
+  DW_APPLE_PROPERTY_readwrite = 0x08,
+  DW_APPLE_PROPERTY_retain = 0x10,
+  DW_APPLE_PROPERTY_copy = 0x20,
+  DW_APPLE_PROPERTY_nonatomic = 0x40,
+  DW_APPLE_PROPERTY_setter = 0x80,
+  DW_APPLE_PROPERTY_atomic = 0x100,
+  DW_APPLE_PROPERTY_weak =   0x200,
+  DW_APPLE_PROPERTY_strong = 0x400,
+  DW_APPLE_PROPERTY_unsafe_unretained = 0x800
+};
+
+// Constants for the DWARF5 Accelerator Table Proposal
+enum AcceleratorTable {
+  // Data layout descriptors.
+  DW_ATOM_null = 0u,       // Marker as the end of a list of atoms.
+  DW_ATOM_die_offset = 1u, // DIE offset in the debug_info section.
+  DW_ATOM_cu_offset = 2u, // Offset of the compile unit header that contains the
+                          // item in question.
+  DW_ATOM_die_tag = 3u,   // A tag entry.
+  DW_ATOM_type_flags = 4u, // Set of flags for a type.
+
+  // DW_ATOM_type_flags values.
+
+  // Always set for C++, only set for ObjC if this is the @implementation for a
+  // class.
+  DW_FLAG_type_implementation = 2u,
+
+  // Hash functions.
+
+  // Daniel J. Bernstein hash.
+  DW_hash_function_djb = 0u
+};
+
+// Constants for the GNU pubnames/pubtypes extensions supporting gdb index.
+enum GDBIndexEntryKind {
+  GIEK_NONE,
+  GIEK_TYPE,
+  GIEK_VARIABLE,
+  GIEK_FUNCTION,
+  GIEK_OTHER,
+  GIEK_UNUSED5,
+  GIEK_UNUSED6,
+  GIEK_UNUSED7
+};
+
+enum GDBIndexEntryLinkage {
+  GIEL_EXTERNAL,
+  GIEL_STATIC
+};
+
+/// \defgroup DwarfConstantsDumping Dwarf constants dumping functions
+///
+/// All these functions map their argument's value back to the
+/// corresponding enumerator name or return nullptr if the value isn't
+/// known.
+///
+/// @{
+const char *TagString(unsigned Tag);
+const char *ChildrenString(unsigned Children);
+const char *AttributeString(unsigned Attribute);
+const char *FormEncodingString(unsigned Encoding);
+const char *OperationEncodingString(unsigned Encoding);
+const char *AttributeEncodingString(unsigned Encoding);
+const char *DecimalSignString(unsigned Sign);
+const char *EndianityString(unsigned Endian);
+const char *AccessibilityString(unsigned Access);
+const char *VisibilityString(unsigned Visibility);
+const char *VirtualityString(unsigned Virtuality);
+const char *LanguageString(unsigned Language);
+const char *CaseString(unsigned Case);
+const char *ConventionString(unsigned Convention);
+const char *InlineCodeString(unsigned Code);
+const char *ArrayOrderString(unsigned Order);
+const char *DiscriminantString(unsigned Discriminant);
+const char *LNStandardString(unsigned Standard);
+const char *LNExtendedString(unsigned Encoding);
+const char *MacinfoString(unsigned Encoding);
+const char *CallFrameString(unsigned Encoding);
+const char *ApplePropertyString(unsigned);
+const char *AtomTypeString(unsigned Atom);
+const char *GDBIndexEntryKindString(GDBIndexEntryKind Kind);
+const char *GDBIndexEntryLinkageString(GDBIndexEntryLinkage Linkage);
+/// @}
+
+/// \brief Returns the symbolic string representing Val when used as a value
+/// for attribute Attr.
+const char *AttributeValueString(uint16_t Attr, unsigned Val);
+
+/// \brief Decsribes an entry of the various gnu_pub* debug sections.
+///
+/// The gnu_pub* kind looks like:
+///
+/// 0-3  reserved
+/// 4-6  symbol kind
+/// 7    0 == global, 1 == static
+///
+/// A gdb_index descriptor includes the above kind, shifted 24 bits up with the
+/// offset of the cu within the debug_info section stored in those 24 bits.
+struct PubIndexEntryDescriptor {
+  GDBIndexEntryKind Kind;
+  GDBIndexEntryLinkage Linkage;
+  PubIndexEntryDescriptor(GDBIndexEntryKind Kind, GDBIndexEntryLinkage Linkage)
+      : Kind(Kind), Linkage(Linkage) {}
+  /* implicit */ PubIndexEntryDescriptor(GDBIndexEntryKind Kind)
+      : Kind(Kind), Linkage(GIEL_EXTERNAL) {}
+  explicit PubIndexEntryDescriptor(uint8_t Value)
+      : Kind(static_cast<GDBIndexEntryKind>((Value & KIND_MASK) >>
+                                            KIND_OFFSET)),
+        Linkage(static_cast<GDBIndexEntryLinkage>((Value & LINKAGE_MASK) >>
+                                                  LINKAGE_OFFSET)) {}
+  uint8_t toBits() { return Kind << KIND_OFFSET | Linkage << LINKAGE_OFFSET; }
+
+private:
+  enum {
+    KIND_OFFSET = 4,
+    KIND_MASK = 7 << KIND_OFFSET,
+    LINKAGE_OFFSET = 7,
+    LINKAGE_MASK = 1 << LINKAGE_OFFSET
+  };
+};
+
+#endif