Fix setjmp/longjmp on native Windows (#1331)

* Add setjmp wrapper

* Add to projects

* Use wrapper on x64

* Always build on x64 and exclude on win32

* Fix signature

* Add comments

* Add comments for os-win32.h

* Add extern decleration

* Support cmake Windows build

* Fix for MinGW

CMakeLists.txt

@@ -859,6 +859,10 @@ if (MSVC)
         ${CMAKE_CURRENT_SOURCE_DIR}/msvc/unicorn/qapi-types.c
         ${CMAKE_CURRENT_SOURCE_DIR}/msvc/unicorn/qapi-visit.c
     )
+    if(CMAKE_SIZEOF_VOID_P EQUAL 8)
+        enable_language(ASM_MASM)
+        set(UNICORN_SRCS ${UNICORN_SRCS} qemu/util/setjmp-wrapper-win32.asm)
+    endif()
 else()
     set(UNICORN_SRCS
         ${UNICORN_SRCS_COMMON}