kusmour updated this revision to Diff 203061.
kusmour added a comment.

Update the `GetReturnValueObjectImpl` using function `CanPassInRegisters` to 
explicitly check

NOTE: There's NO register context info about registers beyond general purpose 
registers
So floating point return type is not supported since it uses XMM0 to return
need to update register context for windows x64


Repository:
  rLLDB LLDB

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D62213/new/

https://reviews.llvm.org/D62213

Files:
  lldb/source/API/SystemInitializerFull.cpp
  lldb/source/Plugins/ABI/CMakeLists.txt
  lldb/source/Plugins/ABI/SysV-x86_64/ABISysV_x86_64.cpp
  lldb/source/Plugins/ABI/Windows-x86_64/ABIWindows_x86_64.cpp
  lldb/source/Plugins/ABI/Windows-x86_64/ABIWindows_x86_64.h
  lldb/source/Plugins/ABI/Windows-x86_64/CMakeLists.txt
  lldb/source/Plugins/Process/Windows/Common/x64/RegisterContextWindows_x64.cpp

Index: lldb/source/Plugins/Process/Windows/Common/x64/RegisterContextWindows_x64.cpp
===================================================================
--- lldb/source/Plugins/Process/Windows/Common/x64/RegisterContextWindows_x64.cpp
+++ lldb/source/Plugins/Process/Windows/Common/x64/RegisterContextWindows_x64.cpp
@@ -133,14 +133,14 @@
      nullptr,
      0},
     {DEFINE_GPR(r10, nullptr),
-     {dwarf_r10_x86_64, dwarf_r10_x86_64, LLDB_REGNUM_GENERIC_ARG5,
+     {dwarf_r10_x86_64, dwarf_r10_x86_64, LLDB_INVALID_REGNUM,
       LLDB_INVALID_REGNUM, lldb_r10_x86_64},
      nullptr,
      nullptr,
      nullptr,
      0},
     {DEFINE_GPR(r11, nullptr),
-     {dwarf_r11_x86_64, dwarf_r11_x86_64, LLDB_REGNUM_GENERIC_ARG6,
+     {dwarf_r11_x86_64, dwarf_r11_x86_64, LLDB_INVALID_REGNUM,
       LLDB_INVALID_REGNUM, lldb_r11_x86_64},
      nullptr,
      nullptr,
Index: lldb/source/Plugins/ABI/Windows-x86_64/CMakeLists.txt
===================================================================
--- /dev/null
+++ lldb/source/Plugins/ABI/Windows-x86_64/CMakeLists.txt
@@ -0,0 +1,10 @@
+add_lldb_library(lldbPluginABIWindows_x86_64 PLUGIN
+  ABIWindows_x86_64.cpp
+
+  LINK_LIBS
+    lldbCore
+    lldbSymbol
+    lldbTarget
+  LINK_COMPONENTS
+    Support
+  )
Index: lldb/source/Plugins/ABI/Windows-x86_64/ABIWindows_x86_64.h
===================================================================
--- /dev/null
+++ lldb/source/Plugins/ABI/Windows-x86_64/ABIWindows_x86_64.h
@@ -0,0 +1,99 @@
+//===-- ABIWindows_x86_64.h ----------------------------------------*- 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
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef liblldb_ABIWindows_x86_64_h_
+#define liblldb_ABIWindows_x86_64_h_
+
+#include "lldb/Target/ABI.h"
+#include "lldb/lldb-private.h"
+
+class ABIWindows_x86_64 : public lldb_private::ABI {
+public:
+  ~ABIWindows_x86_64() override = default;
+
+  size_t GetRedZoneSize() const override;
+
+  bool PrepareTrivialCall(lldb_private::Thread &thread, lldb::addr_t sp,
+                          lldb::addr_t functionAddress,
+                          lldb::addr_t returnAddress,
+                          llvm::ArrayRef<lldb::addr_t> args) const override;
+
+  bool GetArgumentValues(lldb_private::Thread &thread,
+                         lldb_private::ValueList &values) const override;
+
+  lldb_private::Status
+  SetReturnValueObject(lldb::StackFrameSP &frame_sp,
+                       lldb::ValueObjectSP &new_value) override;
+
+  lldb::ValueObjectSP
+  GetReturnValueObjectImpl(lldb_private::Thread &thread,
+                           lldb_private::CompilerType &type) const override;
+
+  bool
+  CreateFunctionEntryUnwindPlan(lldb_private::UnwindPlan &unwind_plan) override;
+
+  bool CreateDefaultUnwindPlan(lldb_private::UnwindPlan &unwind_plan) override;
+
+  bool RegisterIsVolatile(const lldb_private::RegisterInfo *reg_info) override;
+
+  // In Windows_x86_64 ABI, stack will always be maintained 16-byte aligned
+  bool CallFrameAddressIsValid(lldb::addr_t cfa) override {
+	  if (cfa & (16ull - 1ull))
+      return false; // Not 16 byte aligned
+    if (cfa == 0)
+      return false; // Zero is not a valid stack address
+    return true;
+  }
+
+  bool CodeAddressIsValid(lldb::addr_t pc) override {
+    // We have a 64 bit address space, so anything is valid as opcodes
+    // aren't fixed width...
+    return true;
+  }
+
+  const lldb_private::RegisterInfo *
+  GetRegisterInfoArray(uint32_t &count) override;
+
+  bool GetPointerReturnRegister(const char *&name) override;
+
+  //------------------------------------------------------------------
+  // Static Functions
+  //------------------------------------------------------------------
+
+  static void Initialize();
+
+  static void Terminate();
+
+  static lldb::ABISP CreateInstance(lldb::ProcessSP process_sp, const lldb_private::ArchSpec &arch);
+
+  static lldb_private::ConstString GetPluginNameStatic();
+
+  //------------------------------------------------------------------
+  // PluginInterface protocol
+  //------------------------------------------------------------------
+
+  lldb_private::ConstString GetPluginName() override;
+
+  uint32_t GetPluginVersion() override;
+
+protected:
+  void CreateRegisterMapIfNeeded();
+
+  lldb::ValueObjectSP
+  GetReturnValueObjectSimple(lldb_private::Thread &thread,
+                             lldb_private::CompilerType &ast_type) const;
+
+  bool RegisterIsCalleeSaved(const lldb_private::RegisterInfo *reg_info);
+
+private:
+  ABIWindows_x86_64(lldb::ProcessSP process_sp) : lldb_private::ABI(process_sp) {
+    // Call CreateInstance instead.
+  }
+};
+
+#endif // liblldb_ABISysV_x86_64_h_
Index: lldb/source/Plugins/ABI/Windows-x86_64/ABIWindows_x86_64.cpp
===================================================================
--- /dev/null
+++ lldb/source/Plugins/ABI/Windows-x86_64/ABIWindows_x86_64.cpp
@@ -0,0 +1,1811 @@
+//===-- ABIWindows_x86_64.cpp --------------------------------------*- 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
+//
+//===----------------------------------------------------------------------===//
+
+#include "ABIWindows_x86_64.h"
+
+#include "llvm/ADT/STLExtras.h"
+#include "llvm/ADT/StringSwitch.h"
+#include "llvm/ADT/Triple.h"
+
+#include "lldb/Core/Module.h"
+#include "lldb/Core/PluginManager.h"
+#include "lldb/Core/Value.h"
+#include "lldb/Core/ValueObjectConstResult.h"
+#include "lldb/Core/ValueObjectMemory.h"
+#include "lldb/Core/ValueObjectRegister.h"
+#include "lldb/Symbol/UnwindPlan.h"
+#include "lldb/Target/Process.h"
+#include "lldb/Target/RegisterContext.h"
+#include "lldb/Target/StackFrame.h"
+#include "lldb/Target/Target.h"
+#include "lldb/Target/Thread.h"
+#include "lldb/Utility/ConstString.h"
+#include "lldb/Utility/DataExtractor.h"
+#include "lldb/Utility/Log.h"
+#include "lldb/Utility/RegisterValue.h"
+#include "lldb/Utility/Status.h"
+
+using namespace lldb;
+using namespace lldb_private;
+
+enum dwarf_regnums {
+  dwarf_rax = 0,
+  dwarf_rdx,
+  dwarf_rcx,
+  dwarf_rbx,
+  dwarf_rsi,
+  dwarf_rdi,
+  dwarf_rbp,
+  dwarf_rsp,
+  dwarf_r8,
+  dwarf_r9,
+  dwarf_r10,
+  dwarf_r11,
+  dwarf_r12,
+  dwarf_r13,
+  dwarf_r14,
+  dwarf_r15,
+  dwarf_rip,
+  dwarf_xmm0,
+  dwarf_xmm1,
+  dwarf_xmm2,
+  dwarf_xmm3,
+  dwarf_xmm4,
+  dwarf_xmm5,
+  dwarf_xmm6,
+  dwarf_xmm7,
+  dwarf_xmm8,
+  dwarf_xmm9,
+  dwarf_xmm10,
+  dwarf_xmm11,
+  dwarf_xmm12,
+  dwarf_xmm13,
+  dwarf_xmm14,
+  dwarf_xmm15,
+  dwarf_stmm0,
+  dwarf_stmm1,
+  dwarf_stmm2,
+  dwarf_stmm3,
+  dwarf_stmm4,
+  dwarf_stmm5,
+  dwarf_stmm6,
+  dwarf_stmm7,
+  dwarf_ymm0,
+  dwarf_ymm1,
+  dwarf_ymm2,
+  dwarf_ymm3,
+  dwarf_ymm4,
+  dwarf_ymm5,
+  dwarf_ymm6,
+  dwarf_ymm7,
+  dwarf_ymm8,
+  dwarf_ymm9,
+  dwarf_ymm10,
+  dwarf_ymm11,
+  dwarf_ymm12,
+  dwarf_ymm13,
+  dwarf_ymm14,
+  dwarf_ymm15,
+  dwarf_bnd0 = 126,
+  dwarf_bnd1,
+  dwarf_bnd2,
+  dwarf_bnd3
+};
+
+static RegisterInfo g_register_infos[] = {
+    //  NAME      ALT      SZ OFF ENCODING         FORMAT              EH_FRAME
+    //  DWARF                 GENERIC                     PROCESS PLUGIN
+    //  LLDB NATIVE
+    //  ========  =======  == === =============    ===================
+    //  ======================= =====================
+    //  =========================== ===================== ======================
+    {"rax",
+     nullptr,
+     8,
+     0,
+     eEncodingUint,
+     eFormatHex,
+     {dwarf_rax, dwarf_rax, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM,
+      LLDB_INVALID_REGNUM},
+     nullptr,
+     nullptr,
+     nullptr,
+     0},
+    {"rbx",
+     nullptr,
+     8,
+     0,
+     eEncodingUint,
+     eFormatHex,
+     {dwarf_rbx, dwarf_rbx, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM,
+      LLDB_INVALID_REGNUM},
+     nullptr,
+     nullptr,
+     nullptr,
+     0},
+    {"rcx",
+     "arg1",
+     8,
+     0,
+     eEncodingUint,
+     eFormatHex,
+     {dwarf_rcx, dwarf_rcx, LLDB_REGNUM_GENERIC_ARG1, LLDB_INVALID_REGNUM,
+      LLDB_INVALID_REGNUM},
+     nullptr,
+     nullptr,
+     nullptr,
+     0},
+    {"rdx",
+     "arg2",
+     8,
+     0,
+     eEncodingUint,
+     eFormatHex,
+     {dwarf_rdx, dwarf_rdx, LLDB_REGNUM_GENERIC_ARG2, LLDB_INVALID_REGNUM,
+      LLDB_INVALID_REGNUM},
+     nullptr,
+     nullptr,
+     nullptr,
+     0},
+    {"rsi",
+     nullptr,
+     8,
+     0,
+     eEncodingUint,
+     eFormatHex,
+     {dwarf_rsi, dwarf_rsi, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM,
+      LLDB_INVALID_REGNUM},
+     nullptr,
+     nullptr,
+     nullptr,
+     0},
+    {"rdi",
+     nullptr,
+     8,
+     0,
+     eEncodingUint,
+     eFormatHex,
+     {dwarf_rdi, dwarf_rdi, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM,
+      LLDB_INVALID_REGNUM},
+     nullptr,
+     nullptr,
+     nullptr,
+     0},
+    {"rbp",
+     "fp",
+     8,
+     0,
+     eEncodingUint,
+     eFormatHex,
+     {dwarf_rbp, dwarf_rbp, LLDB_REGNUM_GENERIC_FP, LLDB_INVALID_REGNUM,
+      LLDB_INVALID_REGNUM},
+     nullptr,
+     nullptr,
+     nullptr,
+     0},
+    {"rsp",
+     "sp",
+     8,
+     0,
+     eEncodingUint,
+     eFormatHex,
+     {dwarf_rsp, dwarf_rsp, LLDB_REGNUM_GENERIC_SP, LLDB_INVALID_REGNUM,
+      LLDB_INVALID_REGNUM},
+     nullptr,
+     nullptr,
+     nullptr,
+     0},
+    {"r8",
+     "arg3",
+     8,
+     0,
+     eEncodingUint,
+     eFormatHex,
+     {dwarf_r8, dwarf_r8, LLDB_REGNUM_GENERIC_ARG3, LLDB_INVALID_REGNUM,
+      LLDB_INVALID_REGNUM},
+     nullptr,
+     nullptr,
+     nullptr,
+     0},
+    {"r9",
+     "arg4",
+     8,
+     0,
+     eEncodingUint,
+     eFormatHex,
+     {dwarf_r9, dwarf_r9, LLDB_REGNUM_GENERIC_ARG4, LLDB_INVALID_REGNUM,
+      LLDB_INVALID_REGNUM},
+     nullptr,
+     nullptr,
+     nullptr,
+     0},
+    {"r10",
+     nullptr,
+     8,
+     0,
+     eEncodingUint,
+     eFormatHex,
+     {dwarf_r10, dwarf_r10, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM,
+      LLDB_INVALID_REGNUM},
+     nullptr,
+     nullptr,
+     nullptr,
+     0},
+    {"r11",
+     nullptr,
+     8,
+     0,
+     eEncodingUint,
+     eFormatHex,
+     {dwarf_r11, dwarf_r11, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM,
+      LLDB_INVALID_REGNUM},
+     nullptr,
+     nullptr,
+     nullptr,
+     0},
+    {"r12",
+     nullptr,
+     8,
+     0,
+     eEncodingUint,
+     eFormatHex,
+     {dwarf_r12, dwarf_r12, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM,
+      LLDB_INVALID_REGNUM},
+     nullptr,
+     nullptr,
+     nullptr,
+     0},
+    {"r13",
+     nullptr,
+     8,
+     0,
+     eEncodingUint,
+     eFormatHex,
+     {dwarf_r13, dwarf_r13, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM,
+      LLDB_INVALID_REGNUM},
+     nullptr,
+     nullptr,
+     nullptr,
+     0},
+    {"r14",
+     nullptr,
+     8,
+     0,
+     eEncodingUint,
+     eFormatHex,
+     {dwarf_r14, dwarf_r14, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM,
+      LLDB_INVALID_REGNUM},
+     nullptr,
+     nullptr,
+     nullptr,
+     0},
+    {"r15",
+     nullptr,
+     8,
+     0,
+     eEncodingUint,
+     eFormatHex,
+     {dwarf_r15, dwarf_r15, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM,
+      LLDB_INVALID_REGNUM},
+     nullptr,
+     nullptr,
+     nullptr,
+     0},
+    {"rip",
+     "pc",
+     8,
+     0,
+     eEncodingUint,
+     eFormatHex,
+     {dwarf_rip, dwarf_rip, LLDB_REGNUM_GENERIC_PC, LLDB_INVALID_REGNUM,
+      LLDB_INVALID_REGNUM},
+     nullptr,
+     nullptr,
+     nullptr,
+     0},
+    {"rflags",
+     nullptr,
+     4,
+     0,
+     eEncodingUint,
+     eFormatHex,
+     {LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, LLDB_REGNUM_GENERIC_FLAGS,
+      LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM},
+     nullptr,
+     nullptr,
+     nullptr,
+     0},
+    {"cs",
+     nullptr,
+     4,
+     0,
+     eEncodingUint,
+     eFormatHex,
+     {LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM,
+      LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM},
+     nullptr,
+     nullptr,
+     nullptr,
+     0},
+    {"ss",
+     nullptr,
+     4,
+     0,
+     eEncodingUint,
+     eFormatHex,
+     {LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM,
+      LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM},
+     nullptr,
+     nullptr,
+     nullptr,
+     0},
+    {"ds",
+     nullptr,
+     4,
+     0,
+     eEncodingUint,
+     eFormatHex,
+     {LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM,
+      LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM},
+     nullptr,
+     nullptr,
+     nullptr,
+     0},
+    {"es",
+     nullptr,
+     4,
+     0,
+     eEncodingUint,
+     eFormatHex,
+     {LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM,
+      LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM},
+     nullptr,
+     nullptr,
+     nullptr,
+     0},
+    {"fs",
+     nullptr,
+     4,
+     0,
+     eEncodingUint,
+     eFormatHex,
+     {LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM,
+      LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM},
+     nullptr,
+     nullptr,
+     nullptr,
+     0},
+    {"gs",
+     nullptr,
+     4,
+     0,
+     eEncodingUint,
+     eFormatHex,
+     {LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM,
+      LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM},
+     nullptr,
+     nullptr,
+     nullptr,
+     0},
+    {"stmm0",
+     nullptr,
+     10,
+     0,
+     eEncodingVector,
+     eFormatVectorOfUInt8,
+     {dwarf_stmm0, dwarf_stmm0, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM,
+      LLDB_INVALID_REGNUM},
+     nullptr,
+     nullptr,
+     nullptr,
+     0},
+    {"stmm1",
+     nullptr,
+     10,
+     0,
+     eEncodingVector,
+     eFormatVectorOfUInt8,
+     {dwarf_stmm1, dwarf_stmm1, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM,
+      LLDB_INVALID_REGNUM},
+     nullptr,
+     nullptr,
+     nullptr,
+     0},
+    {"stmm2",
+     nullptr,
+     10,
+     0,
+     eEncodingVector,
+     eFormatVectorOfUInt8,
+     {dwarf_stmm2, dwarf_stmm2, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM,
+      LLDB_INVALID_REGNUM},
+     nullptr,
+     nullptr,
+     nullptr,
+     0},
+    {"stmm3",
+     nullptr,
+     10,
+     0,
+     eEncodingVector,
+     eFormatVectorOfUInt8,
+     {dwarf_stmm3, dwarf_stmm3, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM,
+      LLDB_INVALID_REGNUM},
+     nullptr,
+     nullptr,
+     nullptr,
+     0},
+    {"stmm4",
+     nullptr,
+     10,
+     0,
+     eEncodingVector,
+     eFormatVectorOfUInt8,
+     {dwarf_stmm4, dwarf_stmm4, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM,
+      LLDB_INVALID_REGNUM},
+     nullptr,
+     nullptr,
+     nullptr,
+     0},
+    {"stmm5",
+     nullptr,
+     10,
+     0,
+     eEncodingVector,
+     eFormatVectorOfUInt8,
+     {dwarf_stmm5, dwarf_stmm5, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM,
+      LLDB_INVALID_REGNUM},
+     nullptr,
+     nullptr,
+     nullptr,
+     0},
+    {"stmm6",
+     nullptr,
+     10,
+     0,
+     eEncodingVector,
+     eFormatVectorOfUInt8,
+     {dwarf_stmm6, dwarf_stmm6, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM,
+      LLDB_INVALID_REGNUM},
+     nullptr,
+     nullptr,
+     nullptr,
+     0},
+    {"stmm7",
+     nullptr,
+     10,
+     0,
+     eEncodingVector,
+     eFormatVectorOfUInt8,
+     {dwarf_stmm7, dwarf_stmm7, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM,
+      LLDB_INVALID_REGNUM},
+     nullptr,
+     nullptr,
+     nullptr,
+     0},
+    {"fctrl",
+     nullptr,
+     4,
+     0,
+     eEncodingUint,
+     eFormatHex,
+     {LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM,
+      LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM},
+     nullptr,
+     nullptr,
+     nullptr,
+     0},
+    {"fstat",
+     nullptr,
+     4,
+     0,
+     eEncodingUint,
+     eFormatHex,
+     {LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM,
+      LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM},
+     nullptr,
+     nullptr,
+     nullptr,
+     0},
+    {"ftag",
+     nullptr,
+     4,
+     0,
+     eEncodingUint,
+     eFormatHex,
+     {LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM,
+      LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM},
+     nullptr,
+     nullptr,
+     nullptr,
+     0},
+    {"fiseg",
+     nullptr,
+     4,
+     0,
+     eEncodingUint,
+     eFormatHex,
+     {LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM,
+      LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM},
+     nullptr,
+     nullptr,
+     nullptr,
+     0},
+    {"fioff",
+     nullptr,
+     4,
+     0,
+     eEncodingUint,
+     eFormatHex,
+     {LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM,
+      LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM},
+     nullptr,
+     nullptr,
+     nullptr,
+     0},
+    {"foseg",
+     nullptr,
+     4,
+     0,
+     eEncodingUint,
+     eFormatHex,
+     {LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM,
+      LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM},
+     nullptr,
+     nullptr,
+     nullptr,
+     0},
+    {"fooff",
+     nullptr,
+     4,
+     0,
+     eEncodingUint,
+     eFormatHex,
+     {LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM,
+      LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM},
+     nullptr,
+     nullptr,
+     nullptr,
+     0},
+    {"fop",
+     nullptr,
+     4,
+     0,
+     eEncodingUint,
+     eFormatHex,
+     {LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM,
+      LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM},
+     nullptr,
+     nullptr,
+     nullptr,
+     0},
+    {"xmm0",
+     nullptr,
+     16,
+     0,
+     eEncodingVector,
+     eFormatVectorOfUInt8,
+     {dwarf_xmm0, dwarf_xmm0, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM,
+      LLDB_INVALID_REGNUM},
+     nullptr,
+     nullptr,
+     nullptr,
+     0},
+    {"xmm1",
+     nullptr,
+     16,
+     0,
+     eEncodingVector,
+     eFormatVectorOfUInt8,
+     {dwarf_xmm1, dwarf_xmm1, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM,
+      LLDB_INVALID_REGNUM},
+     nullptr,
+     nullptr,
+     nullptr,
+     0},
+    {"xmm2",
+     nullptr,
+     16,
+     0,
+     eEncodingVector,
+     eFormatVectorOfUInt8,
+     {dwarf_xmm2, dwarf_xmm2, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM,
+      LLDB_INVALID_REGNUM},
+     nullptr,
+     nullptr,
+     nullptr,
+     0},
+    {"xmm3",
+     nullptr,
+     16,
+     0,
+     eEncodingVector,
+     eFormatVectorOfUInt8,
+     {dwarf_xmm3, dwarf_xmm3, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM,
+      LLDB_INVALID_REGNUM},
+     nullptr,
+     nullptr,
+     nullptr,
+     0},
+    {"xmm4",
+     nullptr,
+     16,
+     0,
+     eEncodingVector,
+     eFormatVectorOfUInt8,
+     {dwarf_xmm4, dwarf_xmm4, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM,
+      LLDB_INVALID_REGNUM},
+     nullptr,
+     nullptr,
+     nullptr,
+     0},
+    {"xmm5",
+     nullptr,
+     16,
+     0,
+     eEncodingVector,
+     eFormatVectorOfUInt8,
+     {dwarf_xmm5, dwarf_xmm5, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM,
+      LLDB_INVALID_REGNUM},
+     nullptr,
+     nullptr,
+     nullptr,
+     0},
+    {"xmm6",
+     nullptr,
+     16,
+     0,
+     eEncodingVector,
+     eFormatVectorOfUInt8,
+     {dwarf_xmm6, dwarf_xmm6, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM,
+      LLDB_INVALID_REGNUM},
+     nullptr,
+     nullptr,
+     nullptr,
+     0},
+    {"xmm7",
+     nullptr,
+     16,
+     0,
+     eEncodingVector,
+     eFormatVectorOfUInt8,
+     {dwarf_xmm7, dwarf_xmm7, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM,
+      LLDB_INVALID_REGNUM},
+     nullptr,
+     nullptr,
+     nullptr,
+     0},
+    {"xmm8",
+     nullptr,
+     16,
+     0,
+     eEncodingVector,
+     eFormatVectorOfUInt8,
+     {dwarf_xmm8, dwarf_xmm8, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM,
+      LLDB_INVALID_REGNUM},
+     nullptr,
+     nullptr,
+     nullptr,
+     0},
+    {"xmm9",
+     nullptr,
+     16,
+     0,
+     eEncodingVector,
+     eFormatVectorOfUInt8,
+     {dwarf_xmm9, dwarf_xmm9, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM,
+      LLDB_INVALID_REGNUM},
+     nullptr,
+     nullptr,
+     nullptr,
+     0},
+    {"xmm10",
+     nullptr,
+     16,
+     0,
+     eEncodingVector,
+     eFormatVectorOfUInt8,
+     {dwarf_xmm10, dwarf_xmm10, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM,
+      LLDB_INVALID_REGNUM},
+     nullptr,
+     nullptr,
+     nullptr,
+     0},
+    {"xmm11",
+     nullptr,
+     16,
+     0,
+     eEncodingVector,
+     eFormatVectorOfUInt8,
+     {dwarf_xmm11, dwarf_xmm11, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM,
+      LLDB_INVALID_REGNUM},
+     nullptr,
+     nullptr,
+     nullptr,
+     0},
+    {"xmm12",
+     nullptr,
+     16,
+     0,
+     eEncodingVector,
+     eFormatVectorOfUInt8,
+     {dwarf_xmm12, dwarf_xmm12, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM,
+      LLDB_INVALID_REGNUM},
+     nullptr,
+     nullptr,
+     nullptr,
+     0},
+    {"xmm13",
+     nullptr,
+     16,
+     0,
+     eEncodingVector,
+     eFormatVectorOfUInt8,
+     {dwarf_xmm13, dwarf_xmm13, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM,
+      LLDB_INVALID_REGNUM},
+     nullptr,
+     nullptr,
+     nullptr,
+     0},
+    {"xmm14",
+     nullptr,
+     16,
+     0,
+     eEncodingVector,
+     eFormatVectorOfUInt8,
+     {dwarf_xmm14, dwarf_xmm14, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM,
+      LLDB_INVALID_REGNUM},
+     nullptr,
+     nullptr,
+     nullptr,
+     0},
+    {"xmm15",
+     nullptr,
+     16,
+     0,
+     eEncodingVector,
+     eFormatVectorOfUInt8,
+     {dwarf_xmm15, dwarf_xmm15, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM,
+      LLDB_INVALID_REGNUM},
+     nullptr,
+     nullptr,
+     nullptr,
+     0},
+    {"mxcsr",
+     nullptr,
+     4,
+     0,
+     eEncodingUint,
+     eFormatHex,
+     {LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM,
+      LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM},
+     nullptr,
+     nullptr,
+     nullptr,
+     0},
+    {"ymm0",
+     nullptr,
+     32,
+     0,
+     eEncodingVector,
+     eFormatVectorOfUInt8,
+     {dwarf_ymm0, dwarf_ymm0, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM,
+      LLDB_INVALID_REGNUM},
+     nullptr,
+     nullptr,
+     nullptr,
+     0},
+    {"ymm1",
+     nullptr,
+     32,
+     0,
+     eEncodingVector,
+     eFormatVectorOfUInt8,
+     {dwarf_ymm1, dwarf_ymm1, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM,
+      LLDB_INVALID_REGNUM},
+     nullptr,
+     nullptr,
+     nullptr,
+     0},
+    {"ymm2",
+     nullptr,
+     32,
+     0,
+     eEncodingVector,
+     eFormatVectorOfUInt8,
+     {dwarf_ymm2, dwarf_ymm2, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM,
+      LLDB_INVALID_REGNUM},
+     nullptr,
+     nullptr,
+     nullptr,
+     0},
+    {"ymm3",
+     nullptr,
+     32,
+     0,
+     eEncodingVector,
+     eFormatVectorOfUInt8,
+     {dwarf_ymm3, dwarf_ymm3, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM,
+      LLDB_INVALID_REGNUM},
+     nullptr,
+     nullptr,
+     nullptr,
+     0},
+    {"ymm4",
+     nullptr,
+     32,
+     0,
+     eEncodingVector,
+     eFormatVectorOfUInt8,
+     {dwarf_ymm4, dwarf_ymm4, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM,
+      LLDB_INVALID_REGNUM},
+     nullptr,
+     nullptr,
+     nullptr,
+     0},
+    {"ymm5",
+     nullptr,
+     32,
+     0,
+     eEncodingVector,
+     eFormatVectorOfUInt8,
+     {dwarf_ymm5, dwarf_ymm5, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM,
+      LLDB_INVALID_REGNUM},
+     nullptr,
+     nullptr,
+     nullptr,
+     0},
+    {"ymm6",
+     nullptr,
+     32,
+     0,
+     eEncodingVector,
+     eFormatVectorOfUInt8,
+     {dwarf_ymm6, dwarf_ymm6, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM,
+      LLDB_INVALID_REGNUM},
+     nullptr,
+     nullptr,
+     nullptr,
+     0},
+    {"ymm7",
+     nullptr,
+     32,
+     0,
+     eEncodingVector,
+     eFormatVectorOfUInt8,
+     {dwarf_ymm7, dwarf_ymm7, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM,
+      LLDB_INVALID_REGNUM},
+     nullptr,
+     nullptr,
+     nullptr,
+     0},
+    {"ymm8",
+     nullptr,
+     32,
+     0,
+     eEncodingVector,
+     eFormatVectorOfUInt8,
+     {dwarf_ymm8, dwarf_ymm8, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM,
+      LLDB_INVALID_REGNUM},
+     nullptr,
+     nullptr,
+     nullptr,
+     0},
+    {"ymm9",
+     nullptr,
+     32,
+     0,
+     eEncodingVector,
+     eFormatVectorOfUInt8,
+     {dwarf_ymm9, dwarf_ymm9, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM,
+      LLDB_INVALID_REGNUM},
+     nullptr,
+     nullptr,
+     nullptr,
+     0},
+    {"ymm10",
+     nullptr,
+     32,
+     0,
+     eEncodingVector,
+     eFormatVectorOfUInt8,
+     {dwarf_ymm10, dwarf_ymm10, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM,
+      LLDB_INVALID_REGNUM},
+     nullptr,
+     nullptr,
+     nullptr,
+     0},
+    {"ymm11",
+     nullptr,
+     32,
+     0,
+     eEncodingVector,
+     eFormatVectorOfUInt8,
+     {dwarf_ymm11, dwarf_ymm11, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM,
+      LLDB_INVALID_REGNUM},
+     nullptr,
+     nullptr,
+     nullptr,
+     0},
+    {"ymm12",
+     nullptr,
+     32,
+     0,
+     eEncodingVector,
+     eFormatVectorOfUInt8,
+     {dwarf_ymm12, dwarf_ymm12, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM,
+      LLDB_INVALID_REGNUM},
+     nullptr,
+     nullptr,
+     nullptr,
+     0},
+    {"ymm13",
+     nullptr,
+     32,
+     0,
+     eEncodingVector,
+     eFormatVectorOfUInt8,
+     {dwarf_ymm13, dwarf_ymm13, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM,
+      LLDB_INVALID_REGNUM},
+     nullptr,
+     nullptr,
+     nullptr,
+     0},
+    {"ymm14",
+     nullptr,
+     32,
+     0,
+     eEncodingVector,
+     eFormatVectorOfUInt8,
+     {dwarf_ymm14, dwarf_ymm14, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM,
+      LLDB_INVALID_REGNUM},
+     nullptr,
+     nullptr,
+     nullptr,
+     0},
+    {"ymm15",
+     nullptr,
+     32,
+     0,
+     eEncodingVector,
+     eFormatVectorOfUInt8,
+     {dwarf_ymm15, dwarf_ymm15, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM,
+      LLDB_INVALID_REGNUM},
+     nullptr,
+     nullptr,
+     nullptr,
+     0},
+    {"bnd0",
+     nullptr,
+     16,
+     0,
+     eEncodingVector,
+     eFormatVectorOfUInt64,
+     {dwarf_bnd0, dwarf_bnd0, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM,
+      LLDB_INVALID_REGNUM},
+     nullptr,
+     nullptr,
+     nullptr,
+     0},
+    {"bnd1",
+     nullptr,
+     16,
+     0,
+     eEncodingVector,
+     eFormatVectorOfUInt64,
+     {dwarf_bnd1, dwarf_bnd1, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM,
+      LLDB_INVALID_REGNUM},
+     nullptr,
+     nullptr,
+     nullptr,
+     0},
+    {"bnd2",
+     nullptr,
+     16,
+     0,
+     eEncodingVector,
+     eFormatVectorOfUInt64,
+     {dwarf_bnd2, dwarf_bnd2, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM,
+      LLDB_INVALID_REGNUM},
+     nullptr,
+     nullptr,
+     nullptr,
+     0},
+    {"bnd3",
+     nullptr,
+     16,
+     0,
+     eEncodingVector,
+     eFormatVectorOfUInt64,
+     {dwarf_bnd3, dwarf_bnd3, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM,
+      LLDB_INVALID_REGNUM},
+     nullptr,
+     nullptr,
+     nullptr,
+     0},
+    {"bndcfgu",
+     nullptr,
+     8,
+     0,
+     eEncodingVector,
+     eFormatVectorOfUInt8,
+     {LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM,
+      LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM},
+     nullptr,
+     nullptr,
+     nullptr,
+     0},
+    {"bndstatus",
+     nullptr,
+     8,
+     0,
+     eEncodingVector,
+     eFormatVectorOfUInt8,
+     {LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM,
+      LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM},
+     nullptr,
+     nullptr,
+     nullptr,
+     0}};
+
+static const uint32_t k_num_register_infos =
+    llvm::array_lengthof(g_register_infos);
+static bool g_register_info_names_constified = false;
+
+const lldb_private::RegisterInfo *
+ABIWindows_x86_64::GetRegisterInfoArray(uint32_t &count) {
+  // Make the C-string names and alt_names for the register infos into const
+  // C-string values by having the ConstString unique the names in the global
+  // constant C-string pool.
+  if (!g_register_info_names_constified) {
+    g_register_info_names_constified = true;
+    for (uint32_t i = 0; i < k_num_register_infos; ++i) {
+      if (g_register_infos[i].name)
+        g_register_infos[i].name =
+            ConstString(g_register_infos[i].name).GetCString();
+      if (g_register_infos[i].alt_name)
+        g_register_infos[i].alt_name =
+            ConstString(g_register_infos[i].alt_name).GetCString();
+    }
+  }
+  count = k_num_register_infos;
+  return g_register_infos;
+}
+
+bool ABIWindows_x86_64::GetPointerReturnRegister(const char *&name) {
+  name = "rax";
+  return true;
+}
+
+size_t ABIWindows_x86_64::GetRedZoneSize() const { return 0; }
+
+//------------------------------------------------------------------
+// Static Functions
+//------------------------------------------------------------------
+
+ABISP
+ABIWindows_x86_64::CreateInstance(lldb::ProcessSP process_sp, const ArchSpec &arch) {
+  if (arch.GetTriple().getArch() == llvm::Triple::x86_64 &&
+      arch.GetTriple().isOSWindows()) {
+    return ABISP(new ABIWindows_x86_64(process_sp));
+  }
+  return ABISP();
+}
+
+bool ABIWindows_x86_64::PrepareTrivialCall(Thread &thread, addr_t sp,
+                                           addr_t func_addr, addr_t return_addr,
+                                           llvm::ArrayRef<addr_t> args) const {
+  Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_EXPRESSIONS));
+
+  if (log) {
+    StreamString s;
+    s.Printf("ABIWindows_x86_64::PrepareTrivialCall (tid = 0x%" PRIx64
+             ", sp = 0x%" PRIx64 ", func_addr = 0x%" PRIx64
+             ", return_addr = 0x%" PRIx64,
+             thread.GetID(), (uint64_t)sp, (uint64_t)func_addr,
+             (uint64_t)return_addr);
+
+    for (size_t i = 0; i < args.size(); ++i)
+      s.Printf(", arg%" PRIu64 " = 0x%" PRIx64, static_cast<uint64_t>(i + 1),
+               args[i]);
+    s.PutCString(")");
+    log->PutString(s.GetString());
+  }
+
+  RegisterContext *reg_ctx = thread.GetRegisterContext().get();
+  if (!reg_ctx)
+    return false;
+
+  const RegisterInfo *reg_info = nullptr;
+
+  if (args.size() > 4) // Windows x64 only put first 4 arguments into registers
+    return false;
+
+  for (size_t i = 0; i < args.size(); ++i) {
+    reg_info = reg_ctx->GetRegisterInfo(eRegisterKindGeneric,
+                                        LLDB_REGNUM_GENERIC_ARG1 + i);
+    if (log)
+      log->Printf("About to write arg%" PRIu64 " (0x%" PRIx64 ") into %s",
+                  static_cast<uint64_t>(i + 1), args[i], reg_info->name);
+    if (!reg_ctx->WriteRegisterFromUnsigned(reg_info, args[i]))
+      return false;
+  }
+
+  // First, align the SP
+
+  if (log)
+    log->Printf("16-byte aligning SP: 0x%" PRIx64 " to 0x%" PRIx64,
+                (uint64_t)sp, (uint64_t)(sp & ~0xfull));
+
+  sp &= ~(0xfull); // 16-byte alignment
+
+  sp -= 8; // return address
+
+  Status error;
+  const RegisterInfo *pc_reg_info =
+      reg_ctx->GetRegisterInfo(eRegisterKindGeneric, LLDB_REGNUM_GENERIC_PC);
+  const RegisterInfo *sp_reg_info =
+      reg_ctx->GetRegisterInfo(eRegisterKindGeneric, LLDB_REGNUM_GENERIC_SP);
+  ProcessSP process_sp(thread.GetProcess());
+
+  RegisterValue reg_value;
+  if (log)
+    log->Printf("Pushing the return address onto the stack: 0x%" PRIx64
+                ": 0x%" PRIx64,
+                (uint64_t)sp, (uint64_t)return_addr);
+
+  // Save return address onto the stack
+  if (!process_sp->WritePointerToMemory(sp, return_addr, error))
+    return false;
+
+  // %rsp is set to the actual stack value.
+
+  if (log)
+    log->Printf("Writing SP: 0x%" PRIx64, (uint64_t)sp);
+
+  if (!reg_ctx->WriteRegisterFromUnsigned(sp_reg_info, sp))
+    return false;
+
+  // %rip is set to the address of the called function.
+
+  if (log)
+    log->Printf("Writing IP: 0x%" PRIx64, (uint64_t)func_addr);
+
+  if (!reg_ctx->WriteRegisterFromUnsigned(pc_reg_info, func_addr))
+    return false;
+
+  return true;
+}
+
+static bool ReadIntegerArgument(Scalar &scalar, unsigned int bit_width,
+                                bool is_signed, Thread &thread,
+                                uint32_t *argument_register_ids,
+                                unsigned int &current_argument_register,
+                                addr_t &current_stack_argument) {
+  if (bit_width > 64)
+    return false; // Scalar can't hold large integer arguments
+
+  if (current_argument_register < 4) { // Windows pass first 4 arguments to register
+    scalar = thread.GetRegisterContext()->ReadRegisterAsUnsigned(
+        argument_register_ids[current_argument_register], 0);
+    current_argument_register++;
+    if (is_signed)
+      scalar.SignExtend(bit_width);
+  	return true;
+  }
+  uint32_t byte_size = (bit_width + (CHAR_BIT - 1)) / CHAR_BIT;
+  Status error;
+  if (thread.GetProcess()->ReadScalarIntegerFromMemory(
+          current_stack_argument, byte_size, is_signed, scalar, error)) {
+    current_stack_argument += byte_size;
+    return true;
+  }
+  return false;
+}
+
+bool ABIWindows_x86_64::GetArgumentValues(Thread &thread,
+                                       ValueList &values) const {
+  unsigned int num_values = values.GetSize();
+  unsigned int value_index;
+
+  // Extract the register context so we can read arguments from registers
+
+  RegisterContext *reg_ctx = thread.GetRegisterContext().get();
+
+  if (!reg_ctx)
+    return false;
+
+  // Get the pointer to the first stack argument so we have a place to start
+  // when reading data
+
+  addr_t sp = reg_ctx->GetSP(0);
+
+  if (!sp)
+    return false;
+
+  addr_t current_stack_argument = sp + 8; // jump over return address
+
+  uint32_t argument_register_ids[4];
+
+  argument_register_ids[0] =
+      reg_ctx->GetRegisterInfo(eRegisterKindGeneric, LLDB_REGNUM_GENERIC_ARG1)
+          ->kinds[eRegisterKindLLDB];
+  argument_register_ids[1] =
+      reg_ctx->GetRegisterInfo(eRegisterKindGeneric, LLDB_REGNUM_GENERIC_ARG2)
+          ->kinds[eRegisterKindLLDB];
+  argument_register_ids[2] =
+      reg_ctx->GetRegisterInfo(eRegisterKindGeneric, LLDB_REGNUM_GENERIC_ARG3)
+          ->kinds[eRegisterKindLLDB];
+  argument_register_ids[3] =
+      reg_ctx->GetRegisterInfo(eRegisterKindGeneric, LLDB_REGNUM_GENERIC_ARG4)
+          ->kinds[eRegisterKindLLDB];
+
+  unsigned int current_argument_register = 0;
+
+  for (value_index = 0; value_index < num_values; ++value_index) {
+    Value *value = values.GetValueAtIndex(value_index);
+
+    if (!value)
+      return false;
+
+    CompilerType compiler_type = value->GetCompilerType();
+    llvm::Optional<uint64_t> bit_size = compiler_type.GetBitSize(&thread);
+    if (!bit_size)
+      return false;
+    bool is_signed;
+
+    if (compiler_type.IsIntegerOrEnumerationType(is_signed)) {
+      ReadIntegerArgument(value->GetScalar(), *bit_size, is_signed, thread,
+                          argument_register_ids, current_argument_register,
+                          current_stack_argument);
+    } else if (compiler_type.IsPointerType()) {
+      ReadIntegerArgument(value->GetScalar(), *bit_size, false, thread,
+                          argument_register_ids, current_argument_register,
+                          current_stack_argument);
+    }
+  }
+
+  return true;
+}
+
+Status ABIWindows_x86_64::SetReturnValueObject(lldb::StackFrameSP &frame_sp,
+                                            lldb::ValueObjectSP &new_value_sp) {
+  Status error;
+  if (!new_value_sp) {
+    error.SetErrorString("Empty value object for return value.");
+    return error;
+  }
+
+  CompilerType compiler_type = new_value_sp->GetCompilerType();
+  if (!compiler_type) {
+    error.SetErrorString("Null clang type for return value.");
+    return error;
+  }
+
+  Thread *thread = frame_sp->GetThread().get();
+
+  bool is_signed;
+  uint32_t count;
+  bool is_complex;
+
+  RegisterContext *reg_ctx = thread->GetRegisterContext().get();
+
+  bool set_it_simple = false;
+  if (compiler_type.IsIntegerOrEnumerationType(is_signed) ||
+      compiler_type.IsPointerType()) {
+    const RegisterInfo *reg_info = reg_ctx->GetRegisterInfoByName("rax", 0);
+
+    DataExtractor data;
+    Status data_error;
+    size_t num_bytes = new_value_sp->GetData(data, data_error);
+    if (data_error.Fail()) {
+      error.SetErrorStringWithFormat(
+          "Couldn't convert return value to raw data: %s",
+          data_error.AsCString());
+      return error;
+    }
+    lldb::offset_t offset = 0;
+    if (num_bytes <= 8) {
+      uint64_t raw_value = data.GetMaxU64(&offset, num_bytes);
+
+      if (reg_ctx->WriteRegisterFromUnsigned(reg_info, raw_value))
+        set_it_simple = true;
+    } else {
+      error.SetErrorString("We don't support returning longer than 64 bit "
+                           "integer values at present.");
+    }
+  } else if (compiler_type.IsFloatingPointType(count, is_complex)) {
+    if (is_complex)
+      error.SetErrorString(
+          "We don't support returning complex values at present");
+    else {
+      llvm::Optional<uint64_t> bit_width =
+          compiler_type.GetBitSize(frame_sp.get());
+      if (!bit_width) {
+        error.SetErrorString("can't get type size");
+        return error;
+      }
+      if (*bit_width <= 64) {
+        const RegisterInfo *xmm0_info =
+            reg_ctx->GetRegisterInfoByName("xmm0", 0);
+        RegisterValue xmm0_value;
+        DataExtractor data;
+        Status data_error;
+        size_t num_bytes = new_value_sp->GetData(data, data_error);
+        if (data_error.Fail()) {
+          error.SetErrorStringWithFormat(
+              "Couldn't convert return value to raw data: %s",
+              data_error.AsCString());
+          return error;
+        }
+
+        unsigned char buffer[16];
+        ByteOrder byte_order = data.GetByteOrder();
+
+        data.CopyByteOrderedData(0, num_bytes, buffer, 16, byte_order);
+        xmm0_value.SetBytes(buffer, 16, byte_order);
+        reg_ctx->WriteRegister(xmm0_info, xmm0_value);
+        set_it_simple = true;
+      } else {
+        // Windows doesn't support 80 bit FP
+        error.SetErrorString(
+            "Windows-x86_64 doesn't allow FP larger than 64 bits.");
+      }
+    }
+  }
+
+  if (!set_it_simple) {
+    // Okay we've got a structure or something that doesn't fit in a simple
+    // register.
+    // TODO(wanyi): On Windows, if the return type is a struct:
+    // 1) smaller that 64 bits and return by value -> RAX
+    // 2) bigger than 64 bits, the caller will allocate memory for that struct
+    // and pass the struct pointer in RCX then return the pointer in RAX
+    error.SetErrorString("We only support setting simple integer and float "
+                         "return types at present.");
+  }
+
+  return error;
+}
+
+ValueObjectSP ABIWindows_x86_64::GetReturnValueObjectSimple(
+    Thread &thread, CompilerType &return_compiler_type) const {
+  ValueObjectSP return_valobj_sp;
+  Value value;
+
+  if (!return_compiler_type)
+    return return_valobj_sp;
+
+  value.SetCompilerType(return_compiler_type);
+
+  RegisterContext *reg_ctx = thread.GetRegisterContext().get();
+  if (!reg_ctx)
+    return return_valobj_sp;
+
+  const uint32_t type_flags = return_compiler_type.GetTypeInfo();
+  if (type_flags & eTypeIsScalar) {
+    value.SetValueType(Value::eValueTypeScalar);
+
+    bool success = false;
+    if (type_flags & eTypeIsInteger) {
+      // Extract the register context so we can read arguments from registers
+      llvm::Optional<uint64_t> byte_size =
+          return_compiler_type.GetByteSize(nullptr);
+      if (!byte_size)
+        return return_valobj_sp;
+      uint64_t raw_value = thread.GetRegisterContext()->ReadRegisterAsUnsigned(
+          reg_ctx->GetRegisterInfoByName("rax", 0), 0);
+      const bool is_signed = (type_flags & eTypeIsSigned) != 0;
+      switch (*byte_size) {
+      default:
+        break;
+
+      case sizeof(uint64_t):
+        if (is_signed)
+          value.GetScalar() = (int64_t)(raw_value);
+        else
+          value.GetScalar() = (uint64_t)(raw_value);
+        success = true;
+        break;
+
+      case sizeof(uint32_t):
+        if (is_signed)
+          value.GetScalar() = (int32_t)(raw_value & UINT32_MAX);
+        else
+          value.GetScalar() = (uint32_t)(raw_value & UINT32_MAX);
+        success = true;
+        break;
+
+      case sizeof(uint16_t):
+        if (is_signed)
+          value.GetScalar() = (int16_t)(raw_value & UINT16_MAX);
+        else
+          value.GetScalar() = (uint16_t)(raw_value & UINT16_MAX);
+        success = true;
+        break;
+
+      case sizeof(uint8_t):
+        if (is_signed)
+          value.GetScalar() = (int8_t)(raw_value & UINT8_MAX);
+        else
+          value.GetScalar() = (uint8_t)(raw_value & UINT8_MAX);
+        success = true;
+        break;
+      }
+    } else if (type_flags & eTypeIsFloat) {
+      if (type_flags & eTypeIsComplex) {
+        // Don't handle complex yet.
+      } else {
+        llvm::Optional<uint64_t> byte_size =
+            return_compiler_type.GetByteSize(nullptr);
+        if (byte_size && *byte_size <= sizeof(long double)) {
+          const RegisterInfo *xmm0_info =
+              reg_ctx->GetRegisterInfoByName("xmm0", 0);
+          RegisterValue xmm0_value;
+          if (reg_ctx->ReadRegister(xmm0_info, xmm0_value)) {
+            DataExtractor data;
+            if (xmm0_value.GetData(data)) {
+              lldb::offset_t offset = 0;
+              if (*byte_size == sizeof(float)) {
+                value.GetScalar() = (float)data.GetFloat(&offset);
+                success = true;
+              } else if (*byte_size == sizeof(double)) {
+                // double and long double are the same on windows
+                value.GetScalar() = (double)data.GetDouble(&offset);
+                success = true;
+              }
+            }
+          }
+        }
+      }
+    }
+
+    if (success)
+      return_valobj_sp = ValueObjectConstResult::Create(
+          thread.GetStackFrameAtIndex(0).get(), value, ConstString(""));
+  } else if ((type_flags & eTypeIsPointer) ||
+             (type_flags & eTypeInstanceIsPointer)) {
+    unsigned rax_id =
+        reg_ctx->GetRegisterInfoByName("rax", 0)->kinds[eRegisterKindLLDB];
+    value.GetScalar() =
+        (uint64_t)thread.GetRegisterContext()->ReadRegisterAsUnsigned(rax_id,
+                                                                      0);
+    value.SetValueType(Value::eValueTypeScalar);
+    return_valobj_sp = ValueObjectConstResult::Create(
+        thread.GetStackFrameAtIndex(0).get(), value, ConstString(""));
+  } else if (type_flags & eTypeIsVector) {
+    llvm::Optional<uint64_t> byte_size =
+        return_compiler_type.GetByteSize(nullptr);
+    if (byte_size && *byte_size > 0) {
+      const RegisterInfo *xmm_reg =
+          reg_ctx->GetRegisterInfoByName("xmm0", 0);
+      if (xmm_reg == nullptr)
+        xmm_reg = reg_ctx->GetRegisterInfoByName("mm0", 0);
+
+      if (xmm_reg) {
+        if (*byte_size <= xmm_reg->byte_size) {
+          ProcessSP process_sp(thread.GetProcess());
+          if (process_sp) {
+            std::unique_ptr<DataBufferHeap> heap_data_up(
+                new DataBufferHeap(*byte_size, 0));
+            const ByteOrder byte_order = process_sp->GetByteOrder();
+            RegisterValue reg_value;
+            if (reg_ctx->ReadRegister(xmm_reg, reg_value)) {
+              Status error;
+              if (reg_value.GetAsMemoryData(
+                      xmm_reg, heap_data_up->GetBytes(),
+                      heap_data_up->GetByteSize(), byte_order, error)) {
+                DataExtractor data(DataBufferSP(heap_data_up.release()),
+                                   byte_order,
+                                   process_sp->GetTarget()
+                                       .GetArchitecture()
+                                       .GetAddressByteSize());
+                return_valobj_sp = ValueObjectConstResult::Create(
+                    &thread, return_compiler_type, ConstString(""), data);
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+
+  return return_valobj_sp;
+}
+
+// The compiler will flatten the nested aggregate type into single
+// layer and push the value to stack
+// This helper function will flatten an aggregate type
+// and return true if it can be returned in register(s) by value
+// return false if the aggregate is in memory
+static bool FlattenAggregateType(
+    Thread &thread, ExecutionContext &exe_ctx,
+    CompilerType &return_compiler_type,
+    uint32_t data_byte_offset,
+    std::vector<uint32_t> &aggregate_field_offsets,
+    std::vector<CompilerType> &aggregate_compiler_types) {
+
+  const uint32_t num_children = return_compiler_type.GetNumFields();
+  for (uint32_t idx = 0; idx < num_children; ++idx) {
+    std::string name;
+    bool is_signed;
+    uint32_t count;
+    bool is_complex;
+
+    uint64_t field_bit_offset = 0;
+    CompilerType field_compiler_type = return_compiler_type.GetFieldAtIndex(
+        idx, name, &field_bit_offset, nullptr, nullptr);
+    llvm::Optional<uint64_t> field_bit_width =
+          field_compiler_type.GetBitSize(&thread);
+
+    // if we don't know the size of the field (e.g. invalid type), exit
+    if (!field_bit_width || *field_bit_width == 0) {
+      return false;
+    }
+    // If there are any unaligned fields, this is stored in memory.
+    if (field_bit_offset % *field_bit_width != 0) {
+      return false;
+    }
+
+    // add overall offset
+    uint32_t field_byte_offset = field_bit_offset / 8 + data_byte_offset;
+
+    const uint32_t field_type_flags = field_compiler_type.GetTypeInfo();
+    if (field_compiler_type.IsIntegerOrEnumerationType(is_signed) ||
+        field_compiler_type.IsPointerType() ||
+        field_compiler_type.IsFloatingPointType(count, is_complex)) {
+      aggregate_field_offsets.push_back(field_byte_offset);
+      aggregate_compiler_types.push_back(field_compiler_type);
+    } else if (field_type_flags & eTypeHasChildren) {
+      if (!FlattenAggregateType(thread, exe_ctx, field_compiler_type,
+                                field_byte_offset, aggregate_field_offsets,
+                                aggregate_compiler_types)) {
+        return false;
+      }
+    }
+  }
+  return true;
+}
+
+ValueObjectSP ABIWindows_x86_64::GetReturnValueObjectImpl(
+    Thread &thread, CompilerType &return_compiler_type) const {
+  ValueObjectSP return_valobj_sp;
+
+  if (!return_compiler_type) {
+    return return_valobj_sp;
+  }
+
+  // try extract value as if it's a simple type
+  return_valobj_sp = GetReturnValueObjectSimple(thread, return_compiler_type);
+  if (return_valobj_sp) {
+    return return_valobj_sp;
+  }
+
+  RegisterContextSP reg_ctx_sp = thread.GetRegisterContext();
+  if (!reg_ctx_sp) {
+    return return_valobj_sp;
+  }
+
+  llvm::Optional<uint64_t> bit_width = return_compiler_type.GetBitSize(&thread);
+  if (!bit_width) {
+    return return_valobj_sp;
+  }
+
+  // if it's not simple or aggregate type, then we don't know how to handle it
+  if (!return_compiler_type.IsAggregateType()) {
+    return return_valobj_sp;
+  }
+
+  ExecutionContext exe_ctx(thread.shared_from_this());
+  Target *target = exe_ctx.GetTargetPtr();
+  uint32_t max_register_value_bit_width = 64;
+
+  // The scenario here is to have a struct/class which is POD
+  // if the return struct/class size is larger than 64 bits,
+  // the caller will allocate memory for it and pass the return addr in RCX
+  // then return the address in RAX
+
+  // if the struct is returned by value in register (RAX)
+  // its size has to be: 1, 2, 4, 8, 16, 32, or 64 bits (aligned)
+  // for floating point, the return value will be copied over to RAX
+  bool is_memory = *bit_width > max_register_value_bit_width ||
+                   *bit_width & (*bit_width - 1);
+  std::vector<uint32_t> aggregate_field_offsets;
+  std::vector<CompilerType> aggregate_compiler_types;
+  if (!is_memory &&
+      return_compiler_type.GetTypeSystem()->CanPassInRegisters(
+          return_compiler_type) &&
+      FlattenAggregateType(thread, exe_ctx, return_compiler_type,
+                           0, aggregate_field_offsets,
+                           aggregate_compiler_types)) {
+    ByteOrder byte_order = target->GetArchitecture().GetByteOrder();
+    DataBufferSP data_sp(
+        new DataBufferHeap(max_register_value_bit_width / 8, 0));
+    DataExtractor return_ext(data_sp, byte_order,
+        target->GetArchitecture().GetAddressByteSize());
+
+    // The only register used to return struct/class by value
+    const RegisterInfo *rax_info =
+        reg_ctx_sp->GetRegisterInfoByName("rax", 0);
+    RegisterValue rax_value;
+    reg_ctx_sp->ReadRegister(rax_info, rax_value);
+    DataExtractor rax_data;
+    rax_value.GetData(rax_data);
+
+    uint32_t used_bytes =
+        0; // Tracks how much of the rax registers we've consumed so far
+
+    // in case of the returned type is a subclass of non-abstract-base class
+    // it will have a padding to skip the base content
+    if (aggregate_field_offsets.size())
+      used_bytes = aggregate_field_offsets[0];
+
+    const uint32_t num_children = aggregate_compiler_types.size();
+    for (uint32_t idx = 0; idx < num_children; idx++) {
+      bool is_signed;
+      bool is_complex;
+      uint32_t count;
+
+      CompilerType field_compiler_type = aggregate_compiler_types[idx];
+      uint32_t field_byte_width = (uint32_t) (*field_compiler_type.GetByteSize(&thread));
+      uint32_t field_byte_offset = aggregate_field_offsets[idx];
+
+      uint32_t field_bit_width = field_byte_width * 8;
+
+      // this is unlikely w/o the overall size being greater than 8 bytes
+      // For now, return a nullptr return value object.
+      if (used_bytes >= 8 || used_bytes + field_byte_width > 8) {
+        return return_valobj_sp;
+      }
+
+      DataExtractor *copy_from_extractor = nullptr;
+      uint32_t copy_from_offset = 0;
+      const uint32_t field_byte_flags = field_compiler_type.GetTypeInfo();
+
+      if (field_compiler_type.IsIntegerOrEnumerationType(is_signed) ||
+          field_compiler_type.IsPointerType() ||
+          field_compiler_type.IsFloatingPointType(count, is_complex)) {
+        copy_from_extractor = &rax_data;
+        copy_from_offset = used_bytes;
+        used_bytes += field_byte_width;
+      }
+      // These two tests are just sanity checks.  If I somehow get the type
+      // calculation wrong above it is better to just return nothing than to
+      // assert or crash.
+      if (!copy_from_extractor) {
+        return return_valobj_sp;
+      }
+      if (copy_from_offset + field_byte_width >
+          copy_from_extractor->GetByteSize()) {
+        return return_valobj_sp;
+      }
+      copy_from_extractor->CopyByteOrderedData(copy_from_offset,
+          field_byte_width, data_sp->GetBytes() + field_byte_offset,
+          field_byte_width, byte_order);
+    }
+    if (!is_memory) {
+      // The result is in our data buffer.  Let's make a variable object out
+      // of it:
+      return_valobj_sp = ValueObjectConstResult::Create(
+          &thread, return_compiler_type, ConstString(""), return_ext);
+    }
+  }
+
+  // The Windows x86_64 ABI specifies that the return address for MEMORY
+  // objects be placed in rax on exit from the function.
+
+  // FIXME: This is just taking a guess, rax may very well no longer hold the
+  // return storage location.
+  // If we are going to do this right, when we make a new frame we should
+  // check to see if it uses a memory return, and if we are at the first
+  // instruction and if so stash away the return location.  Then we would
+  // only return the memory return value if we know it is valid.
+  if (is_memory) {
+    unsigned rax_id =
+        reg_ctx_sp->GetRegisterInfoByName("rax", 0)->kinds[eRegisterKindLLDB];
+    lldb::addr_t storage_addr =
+        (uint64_t)thread.GetRegisterContext()->ReadRegisterAsUnsigned(rax_id,
+                                                                      0);
+    return_valobj_sp = ValueObjectMemory::Create(
+        &thread, "", Address(storage_addr, nullptr), return_compiler_type);
+  }
+  return return_valobj_sp;
+}
+
+// This defines the CFA as rsp+8
+// the saved pc is at CFA-8 (i.e. rsp+0)
+// The saved rsp is CFA+0
+
+bool ABIWindows_x86_64::CreateFunctionEntryUnwindPlan(UnwindPlan &unwind_plan) {
+  unwind_plan.Clear();
+  unwind_plan.SetRegisterKind(eRegisterKindDWARF);
+
+  uint32_t sp_reg_num = dwarf_rsp;
+  uint32_t pc_reg_num = dwarf_rip;
+
+  UnwindPlan::RowSP row(new UnwindPlan::Row);
+  row->GetCFAValue().SetIsRegisterPlusOffset(sp_reg_num, 8);
+  row->SetRegisterLocationToAtCFAPlusOffset(pc_reg_num, -8, false);
+  row->SetRegisterLocationToIsCFAPlusOffset(sp_reg_num, 0, true);
+  unwind_plan.AppendRow(row);
+  unwind_plan.SetSourceName("x86_64 at-func-entry default");
+  unwind_plan.SetSourcedFromCompiler(eLazyBoolNo);
+  return true;
+}
+
+// Windows-x86_64 doesn't use %rbp
+// No available Unwind information for Windows-x86_64 (section .pdata)
+// Let's use SysV-x86_64 one for now
+bool ABIWindows_x86_64::CreateDefaultUnwindPlan(UnwindPlan &unwind_plan) {
+  unwind_plan.Clear();
+  unwind_plan.SetRegisterKind(eRegisterKindDWARF);
+
+  uint32_t fp_reg_num = dwarf_rbp;
+  uint32_t sp_reg_num = dwarf_rsp;
+  uint32_t pc_reg_num = dwarf_rip;
+
+  UnwindPlan::RowSP row(new UnwindPlan::Row);
+
+  const int32_t ptr_size = 8;
+  row->GetCFAValue().SetIsRegisterPlusOffset(dwarf_rbp, 2 * ptr_size);
+  row->SetOffset(0);
+
+  row->SetRegisterLocationToAtCFAPlusOffset(fp_reg_num, ptr_size * -2, true);
+  row->SetRegisterLocationToAtCFAPlusOffset(pc_reg_num, ptr_size * -1, true);
+  row->SetRegisterLocationToIsCFAPlusOffset(sp_reg_num, 0, true);
+
+  unwind_plan.AppendRow(row);
+  unwind_plan.SetSourceName("x86_64 default unwind plan");
+  unwind_plan.SetSourcedFromCompiler(eLazyBoolNo);
+  unwind_plan.SetUnwindPlanValidAtAllInstructions(eLazyBoolNo);
+
+  return true;
+}
+
+bool ABIWindows_x86_64::RegisterIsVolatile(const RegisterInfo *reg_info) {
+  return !RegisterIsCalleeSaved(reg_info);
+}
+
+bool ABIWindows_x86_64::RegisterIsCalleeSaved(const RegisterInfo *reg_info) {
+  if (!reg_info)
+    return false;
+  assert(reg_info->name != nullptr && "unnamed register?");
+  std::string Name = std::string(reg_info->name);
+  bool IsCalleeSaved =
+      llvm::StringSwitch<bool>(Name)
+          .Cases("rbx", "ebx", "rbp", "ebp", "rdi", "edi", "rsi", "esi", true)
+          .Cases("rsp", "esp", "r12", "r13", "r14", "r15", "sp", "fp", true)
+          .Cases("xmm6", "xmm7", "xmm8", "xmm9", "xmm10", "xmm11", "xmm12",
+                 "xmm13", "xmm14", "xmm15", true)
+          .Default(false);
+  return IsCalleeSaved;
+}
+
+void ABIWindows_x86_64::Initialize() {
+  PluginManager::RegisterPlugin(
+      GetPluginNameStatic(), "Windows ABI for x86_64 targets", CreateInstance);
+}
+
+void ABIWindows_x86_64::Terminate() {
+  PluginManager::UnregisterPlugin(CreateInstance);
+}
+
+lldb_private::ConstString ABIWindows_x86_64::GetPluginNameStatic() {
+  static ConstString g_name("windows-x86_64");
+  return g_name;
+}
+
+//------------------------------------------------------------------
+// PluginInterface protocol
+//------------------------------------------------------------------
+
+lldb_private::ConstString ABIWindows_x86_64::GetPluginName() {
+  return GetPluginNameStatic();
+}
+
+uint32_t ABIWindows_x86_64::GetPluginVersion() { return 1; }
Index: lldb/source/Plugins/ABI/SysV-x86_64/ABISysV_x86_64.cpp
===================================================================
--- lldb/source/Plugins/ABI/SysV-x86_64/ABISysV_x86_64.cpp
+++ lldb/source/Plugins/ABI/SysV-x86_64/ABISysV_x86_64.cpp
@@ -1090,8 +1090,18 @@
 
 ABISP
 ABISysV_x86_64::CreateInstance(lldb::ProcessSP process_sp, const ArchSpec &arch) {
-  if (arch.GetTriple().getArch() == llvm::Triple::x86_64) {
-    return ABISP(new ABISysV_x86_64(process_sp));
+  const llvm::Triple::ArchType arch_type = arch.GetTriple().getArch();
+  const llvm::Triple::OSType os_type = arch.GetTriple().getOS();
+  if (arch_type == llvm::Triple::x86_64) {
+    switch(os_type) {
+      case llvm::Triple::OSType::MacOSX:
+      case llvm::Triple::OSType::Linux:
+      case llvm::Triple::OSType::FreeBSD:
+      case llvm::Triple::OSType::Solaris:
+        return ABISP(new ABISysV_x86_64(process_sp));
+      default: 
+        return ABISP();
+    }
   }
   return ABISP();
 }
Index: lldb/source/Plugins/ABI/CMakeLists.txt
===================================================================
--- lldb/source/Plugins/ABI/CMakeLists.txt
+++ lldb/source/Plugins/ABI/CMakeLists.txt
@@ -11,3 +11,4 @@
 add_subdirectory(MacOSX-i386)
 add_subdirectory(MacOSX-arm)
 add_subdirectory(MacOSX-arm64)
+add_subdirectory(Windows-x86_64)
Index: lldb/source/API/SystemInitializerFull.cpp
===================================================================
--- lldb/source/API/SystemInitializerFull.cpp
+++ lldb/source/API/SystemInitializerFull.cpp
@@ -34,6 +34,7 @@
 #include "Plugins/ABI/SysV-ppc64/ABISysV_ppc64.h"
 #include "Plugins/ABI/SysV-s390x/ABISysV_s390x.h"
 #include "Plugins/ABI/SysV-x86_64/ABISysV_x86_64.h"
+#include "Plugins/ABI/Windows-x86_64/ABIWindows_x86_64.h"
 #include "Plugins/Architecture/Arm/ArchitectureArm.h"
 #include "Plugins/Architecture/Mips/ArchitectureMips.h"
 #include "Plugins/Architecture/PPC64/ArchitecturePPC64.h"
@@ -186,6 +187,7 @@
   ABISysV_mips::Initialize();
   ABISysV_mips64::Initialize();
   ABISysV_s390x::Initialize();
+  ABIWindows_x86_64::Initialize();
 
   ArchitectureArm::Initialize();
   ArchitectureMips::Initialize();
@@ -299,6 +301,7 @@
   ABISysV_mips::Terminate();
   ABISysV_mips64::Terminate();
   ABISysV_s390x::Terminate();
+  ABIWindows_x86_64::Terminate();
   DisassemblerLLVMC::Terminate();
 
   JITLoaderGDB::Terminate();
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