[ABI] Implement Windows ABI for x86_64

Summary:
Implement the ABI for WIndows-x86_64 including register info and calling convention.
Handled nested struct returned in register (SysV doesn't have it supported)

Reviewers: xiaobai, compnerd

Reviewed By: compnerd

Subscribers: labath, jasonmolenda, fedor.sergeev, mgorny, teemperor, lldb-commits

Tags: #lldb

Differential Revision: https://reviews.llvm.org/D62213

llvm-svn: 364216
diff --git a/lldb/source/API/SystemInitializerFull.cpp b/lldb/source/API/SystemInitializerFull.cpp
index 1cd6ce6..e7f2206 100644
--- a/lldb/source/API/SystemInitializerFull.cpp
+++ b/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();