[gn] Add cctest

test/cctest/test-platform.cc

 // Copyright 2013 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.
 
 #include <stdint.h>
 #include "src/base/build_config.h"
 #include "src/base/platform/platform.h"
 #include "test/cctest/cctest.h"
 
 #ifdef V8_CC_GNU
 
 static uintptr_t sp_addr = 0;
 
 void GetStackPointer(const v8::FunctionCallbackInfo<v8::Value>& args) {
 #if V8_HOST_ARCH_X64
   __asm__ __volatile__("mov %%rsp, %0" : "=g"(sp_addr));
 #elif V8_HOST_ARCH_IA32
   __asm__ __volatile__("mov %%esp, %0" : "=g"(sp_addr));
 #elif V8_HOST_ARCH_ARM
-  __asm__ __volatile__("str %%sp, %0" : "=g"(sp_addr));
+  __asm__ __volatile__("str sp, %0" : "=g"(sp_addr));
 #elif V8_HOST_ARCH_ARM64
   __asm__ __volatile__("mov x16, sp; str x16, %0" : "=g"(sp_addr));
 #elif V8_HOST_ARCH_MIPS
   __asm__ __volatile__("sw $sp, %0" : "=g"(sp_addr));
 #elif V8_HOST_ARCH_MIPS64
   __asm__ __volatile__("sd $sp, %0" : "=g"(sp_addr));
 #elif defined(__s390x__) || defined(_ARCH_S390X)
   __asm__ __volatile__("stg 15, %0" : "=g"(sp_addr));
 #elif defined(__s390__) || defined(_ARCH_S390)
   __asm__ __volatile__("st 15, %0" : "=g"(sp_addr));
@@ skipping 30 matching lines @@
           .ToLocalChecked());
 
   v8::Local<v8::Value> result =
       foo->Call(isolate->GetCurrentContext(), global_object, 0, NULL)
           .ToLocalChecked();
   CHECK_EQ(0u, result->Uint32Value(isolate->GetCurrentContext()).FromJust() %
                    v8::base::OS::ActivationFrameAlignment());
 }
 
 #endif  // V8_CC_GNU