Arm64: Ensure that csp is always aligned to 16 byte values even if jssp is not.

src/v8globals.h

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef V8_V8GLOBALS_H_
 #define V8_V8GLOBALS_H_
 
 #include "globals.h"
 #include "checks.h"
 
@@ skipping 395 matching lines @@
                   SSE2 = 26,   // x86
                   CMOV = 15,   // x86
                   VFP3 = 1,    // ARM
                   ARMv7 = 2,   // ARM
                   SUDIV = 3,   // ARM
                   UNALIGNED_ACCESSES = 4,  // ARM
                   MOVW_MOVT_IMMEDIATE_LOADS = 5,  // ARM
                   VFP32DREGS = 6,  // ARM
                   NEON = 7,    // ARM
                   SAHF = 0,    // x86
-                  FPU = 1};    // MIPS
+                  FPU = 1,     // MIPS
+                  ALWAYS_ALIGN_CSP = 1 };    // ARM64
 
 
 // Used to specify if a macro instruction must perform a smi check on tagged
 // values.
 enum SmiCheckType {
   DONT_DO_SMI_CHECK,
   DO_SMI_CHECK
 };
 
 
@@ skipping 118 matching lines @@
 enum MinusZeroMode {
   TREAT_MINUS_ZERO_AS_ZERO,
   FAIL_ON_MINUS_ZERO
 };
 
 } }  // namespace v8::internal
 
 namespace i = v8::internal;
 
 #endif  // V8_V8GLOBALS_H_