Bug 1525416 - Teach libffi/src/closures.c about ARM64_WIN64 r=froydnj

I added ARM64_WIN64 to every line that mentioned X86_WIN32 and X86_WIN64.

This makes sure the allocation routines do the proper VirtualProtect on the trampolines.

Differential Revision: https://phabricator.services.mozilla.com/D19567

--HG--
extra : moz-landing-system : lando

js/src/ctypes/libffi/src/closures.c

@@ -45,7 +45,7 @@
 #  define FFI_MMAP_EXEC_WRIT 1
 #  define HAVE_MNTENT 1
 # endif
-# if defined(X86_WIN32) || defined(X86_WIN64) || defined(__OS2__)
+# if defined(X86_WIN32) || defined(X86_WIN64) || defined(ARM64_WIN64) || defined(__OS2__)
 /* Windows systems may have Data Execution Protection (DEP) enabled, 
    which requires the use of VirtualMalloc/VirtualFree to alloc/free
    executable memory. */
@@ -111,7 +111,7 @@
 #endif
 #include <string.h>
 #include <stdio.h>
-#if !defined(X86_WIN32) && !defined(X86_WIN64)
+#if !defined(X86_WIN32) && !defined(X86_WIN64) && !defined(ARM64_WIN64)
 #ifdef HAVE_MNTENT
 #include <mntent.h>
 #endif /* HAVE_MNTENT */
@@ -214,7 +214,7 @@ emutramp_enabled_check (void)
 /* Cygwin is Linux-like, but not quite that Linux-like.  */
 #define is_selinux_enabled() 0
 
-#endif /* !defined(X86_WIN32) && !defined(X86_WIN64) */
+#endif /* !defined(X86_WIN32) && !defined(X86_WIN64) && !defined(ARM64_WIN64) */
 
 #ifndef FFI_MMAP_EXEC_EMUTRAMP_PAX
 #define is_emutramp_enabled() 0
@@ -237,11 +237,11 @@ static int dlmalloc_trim(size_t) MAYBE_UNUSED;
 static size_t dlmalloc_usable_size(void*) MAYBE_UNUSED;
 static void dlmalloc_stats(void) MAYBE_UNUSED;
 
-#if !(defined(X86_WIN32) || defined(X86_WIN64) || defined(__OS2__)) || defined (__CYGWIN__) || defined(__INTERIX)
+#if !(defined(X86_WIN32) || defined(X86_WIN64) || defined(ARM64_WIN64) || defined(__OS2__)) || defined (__CYGWIN__) || defined(__INTERIX)
 /* Use these for mmap and munmap within dlmalloc.c.  */
 static void *dlmmap(void *, size_t, int, int, int, off_t);
 static int dlmunmap(void *, size_t);
-#endif /* !(defined(X86_WIN32) || defined(X86_WIN64) || defined(__OS2__)) || defined (__CYGWIN__) || defined(__INTERIX) */
+#endif /* !(defined(X86_WIN32) || defined(X86_WIN64) || defined(ARM64_WIN64) || defined(__OS2__)) || defined (__CYGWIN__) || defined(__INTERIX) */
 
 #define mmap dlmmap
 #define munmap dlmunmap
@@ -251,7 +251,7 @@ static int dlmunmap(void *, size_t);
 #undef mmap
 #undef munmap
 
-#if !(defined(X86_WIN32) || defined(X86_WIN64) || defined(__OS2__)) || defined (__CYGWIN__) || defined(__INTERIX)
+#if !(defined(X86_WIN32) || defined(X86_WIN64) || defined(ARM64_WIN64) || defined(__OS2__)) || defined (__CYGWIN__) || defined(__INTERIX)
 
 /* A mutex used to synchronize access to *exec* variables in this file.  */
 static pthread_mutex_t open_temp_exec_file_mutex = PTHREAD_MUTEX_INITIALIZER;
@@ -572,7 +572,7 @@ segment_holding_code (mstate m, char* addr)
 }
 #endif
 
-#endif /* !(defined(X86_WIN32) || defined(X86_WIN64) || defined(__OS2__)) || defined (__CYGWIN__) || defined(__INTERIX) */
+#endif /* !(defined(X86_WIN32) || defined(X86_WIN64) || defined(ARM64_WIN64) || defined(__OS2__)) || defined (__CYGWIN__) || defined(__INTERIX) */
 
 /* Allocate a chunk of memory with the given size.  Returns a pointer
    to the writable address, and sets *CODE to the executable