--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/include/llvm/BinaryFormat/XCOFF.h	Wed Aug 14 19:46:37 2019 +0900
@@ -0,0 +1,153 @@
+//===-- llvm/BinaryFormat/XCOFF.h - The XCOFF file format -------*- C++/-*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// This file defines manifest constants for the XCOFF object file format.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_BINARYFORMAT_XCOFF_H
+#define LLVM_BINARYFORMAT_XCOFF_H
+
+#include <cstdint>
+
+namespace llvm {
+namespace XCOFF {
+
+// Constants used in the XCOFF definition.
+enum { NameSize = 8 };
+enum ReservedSectionNum { N_DEBUG = -2, N_ABS = -1, N_UNDEF = 0 };
+
+// x_smclas field of x_csect from system header: /usr/include/syms.h
+/// Storage Mapping Class definitions.
+enum StorageMappingClass {
+  //     READ ONLY CLASSES
+  XMC_PR = 0,      ///< Program Code
+  XMC_RO = 1,      ///< Read Only Constant
+  XMC_DB = 2,      ///< Debug Dictionary Table
+  XMC_GL = 6,      ///< Global Linkage (Interfile Interface Code)
+  XMC_XO = 7,      ///< Extended Operation (Pseudo Machine Instruction)
+  XMC_SV = 8,      ///< Supervisor Call (32-bit process only)
+  XMC_SV64 = 17,   ///< Supervisor Call for 64-bit process
+  XMC_SV3264 = 18, ///< Supervisor Call for both 32- and 64-bit processes
+  XMC_TI = 12,     ///< Traceback Index csect
+  XMC_TB = 13,     ///< Traceback Table csect
+
+  //       READ WRITE CLASSES
+  XMC_RW = 5,   ///< Read Write Data
+  XMC_TC0 = 15, ///< TOC Anchor for TOC Addressability
+  XMC_TC = 3,   ///< General TOC item
+  XMC_TD = 16,  ///< Scalar data item in the TOC
+  XMC_DS = 10,  ///< Descriptor csect
+  XMC_UA = 4,   ///< Unclassified - Treated as Read Write
+  XMC_BS = 9,   ///< BSS class (uninitialized static internal)
+  XMC_UC = 11,  ///< Un-named Fortran Common
+
+  XMC_TL = 20, ///< Initialized thread-local variable
+  XMC_UL = 21, ///< Uninitialized thread-local variable
+  XMC_TE = 22  ///< Symbol mapped at the end of TOC
+};
+
+// Flags for defining the section type. Used for the s_flags field of
+// the section header structure. Defined in the system header `scnhdr.h`.
+enum SectionTypeFlags {
+  STYP_PAD = 0x0008,
+  STYP_DWARF = 0x0010,
+  STYP_TEXT = 0x0020,
+  STYP_DATA = 0x0040,
+  STYP_BSS = 0x0080,
+  STYP_EXCEPT = 0x0100,
+  STYP_INFO = 0x0200,
+  STYP_TDATA = 0x0400,
+  STYP_TBSS = 0x0800,
+  STYP_LOADER = 0x1000,
+  STYP_DEBUG = 0x2000,
+  STYP_TYPCHK = 0x4000,
+  STYP_OVRFLO = 0x8000
+};
+
+// STORAGE CLASSES, n_sclass field of syment.
+// The values come from `storclass.h` and `dbxstclass.h`.
+enum StorageClass : uint8_t {
+  // Storage classes used for symbolic debugging symbols.
+  C_FILE = 103,  // File name
+  C_BINCL = 108, // Beginning of include file
+  C_EINCL = 109, // Ending of include file
+  C_GSYM = 128,  // Global variable
+  C_STSYM = 133, // Statically allocated symbol
+  C_BCOMM = 135, // Beginning of common block
+  C_ECOMM = 137, // End of common block
+  C_ENTRY = 141, // Alternate entry
+  C_BSTAT = 143, // Beginning of static block
+  C_ESTAT = 144, // End of static block
+  C_GTLS = 145,  // Global thread-local variable
+  C_STTLS = 146, // Static thread-local variable
+
+  // Storage classes used for DWARF symbols.
+  C_DWARF = 112, // DWARF section symbol
+
+  // Storage classes used for absolute symbols.
+  C_LSYM = 129,  // Automatic variable allocated on stack
+  C_PSYM = 130,  // Argument to subroutine allocated on stack
+  C_RSYM = 131,  // Register variable
+  C_RPSYM = 132, // Argument to function or procedure stored in register
+  C_ECOML = 136, // Local member of common block
+  C_FUN = 142,   // Function or procedure
+
+  // Storage classes used for undefined external symbols or
+  // symbols of general sections.
+  C_EXT = 2,       // External symbol
+  C_WEAKEXT = 111, // Weak external symbol
+
+  // Storage classes used for symbols of general sections.
+  C_NULL = 0,
+  C_STAT = 3,     // Static
+  C_BLOCK = 100,  // ".bb" or ".eb"
+  C_FCN = 101,    // ".bf" or ".ef"
+  C_HIDEXT = 107, // Un-named external symbol
+  C_INFO = 110,   // Comment string in .info section
+  C_DECL = 140,   // Declaration of object (type)
+
+  // Storage classes - Obsolete/Undocumented.
+  C_AUTO = 1,     // Automatic variable
+  C_REG = 4,      // Register variable
+  C_EXTDEF = 5,   // External definition
+  C_LABEL = 6,    // Label
+  C_ULABEL = 7,   // Undefined label
+  C_MOS = 8,      // Member of structure
+  C_ARG = 9,      // Function argument
+  C_STRTAG = 10,  // Structure tag
+  C_MOU = 11,     // Member of union
+  C_UNTAG = 12,   // Union tag
+  C_TPDEF = 13,   // Type definition
+  C_USTATIC = 14, // Undefined static
+  C_ENTAG = 15,   // Enumeration tag
+  C_MOE = 16,     // Member of enumeration
+  C_REGPARM = 17, // Register parameter
+  C_FIELD = 18,   // Bit field
+  C_EOS = 102,    // End of structure
+  C_LINE = 104,
+  C_ALIAS = 105,  // Duplicate tag
+  C_HIDDEN = 106, // Special storage class for external
+  C_EFCN = 255,   // Physical end of function
+
+  // Storage classes - reserved
+  C_TCSYM = 134 // Reserved
+};
+
+enum SymbolType {
+  XTY_ER = 0, ///< External reference.
+  XTY_SD = 1, ///< Csect definition for initialized storage.
+  XTY_LD = 2, ///< Label definition.
+              ///< Defines an entry point to an initialized csect.
+  XTY_CM = 3  ///< Common csect definition. For uninitialized storage.
+};
+
+} // end namespace XCOFF
+} // end namespace llvm
+
+#endif