Line data    Source code

       1             : // Copyright 2013 the V8 project authors. All rights reserved.
       2             : // Use of this source code is governed by a BSD-style license that can be
       3             : // found in the LICENSE file.
       4             : 
       5             : #include <stdint.h>
       6             : #include "src/base/build_config.h"
       7             : #include "src/base/platform/platform.h"
       8             : #include "test/cctest/cctest.h"
       9             : 
      10             : using OS = v8::base::OS;
      11             : 
      12             : namespace v8 {
      13             : namespace internal {
      14             : 
      15             : #ifdef V8_CC_GNU
      16             : static uintptr_t sp_addr = 0;
      17             : 
      18           0 : void GetStackPointer(const v8::FunctionCallbackInfo<v8::Value>& args) {
      19             : #if V8_HOST_ARCH_X64
      20           0 :   __asm__ __volatile__("mov %%rsp, %0" : "=g"(sp_addr));
      21             : #elif V8_HOST_ARCH_IA32
      22             :   __asm__ __volatile__("mov %%esp, %0" : "=g"(sp_addr));
      23             : #elif V8_HOST_ARCH_ARM
      24             :   __asm__ __volatile__("str sp, %0" : "=g"(sp_addr));
      25             : #elif V8_HOST_ARCH_ARM64
      26             :   __asm__ __volatile__("mov x16, sp; str x16, %0" : "=g"(sp_addr));
      27             : #elif V8_HOST_ARCH_MIPS
      28             :   __asm__ __volatile__("sw $sp, %0" : "=g"(sp_addr));
      29             : #elif V8_HOST_ARCH_MIPS64
      30             :   __asm__ __volatile__("sd $sp, %0" : "=g"(sp_addr));
      31             : #elif defined(__s390x__) || defined(_ARCH_S390X)
      32             :   __asm__ __volatile__("stg %%r15, %0" : "=m"(sp_addr));
      33             : #elif defined(__s390__) || defined(_ARCH_S390)
      34             :   __asm__ __volatile__("st 15, %0" : "=m"(sp_addr));
      35             : #elif defined(__PPC64__) || defined(_ARCH_PPC64)
      36             :   __asm__ __volatile__("std 1, %0" : "=g"(sp_addr));
      37             : #elif defined(__PPC__) || defined(_ARCH_PPC)
      38             :   __asm__ __volatile__("stw 1, %0" : "=g"(sp_addr));
      39             : #else
      40             : #error Host architecture was not detected as supported by v8
      41             : #endif
      42             : 
      43           0 :   args.GetReturnValue().Set(v8::Integer::NewFromUnsigned(
      44             :       args.GetIsolate(), static_cast<uint32_t>(sp_addr)));
      45           0 : }
      46             : 
      47       26639 : TEST(StackAlignment) {
      48           0 :   v8::Isolate* isolate = CcTest::isolate();
      49           0 :   v8::HandleScope handle_scope(isolate);
      50             :   v8::Local<v8::ObjectTemplate> global_template =
      51           0 :       v8::ObjectTemplate::New(isolate);
      52           0 :   global_template->Set(v8_str("get_stack_pointer"),
      53           0 :                        v8::FunctionTemplate::New(isolate, GetStackPointer));
      54             : 
      55           0 :   LocalContext env(nullptr, global_template);
      56             :   CompileRun(
      57             :       "function foo() {"
      58             :       "  return get_stack_pointer();"
      59             :       "}");
      60             : 
      61           0 :   v8::Local<v8::Object> global_object = env->Global();
      62             :   v8::Local<v8::Function> foo = v8::Local<v8::Function>::Cast(
      63           0 :       global_object->Get(isolate->GetCurrentContext(), v8_str("foo"))
      64             :           .ToLocalChecked());
      65             : 
      66             :   v8::Local<v8::Value> result =
      67           0 :       foo->Call(isolate->GetCurrentContext(), global_object, 0, nullptr)
      68             :           .ToLocalChecked();
      69           0 :   CHECK_EQ(0u, result->Uint32Value(isolate->GetCurrentContext()).FromJust() %
      70             :                    OS::ActivationFrameAlignment());
      71           0 : }
      72             : #endif  // V8_CC_GNU
      73             : 
      74             : }  // namespace internal
      75       79917 : }  // namespace v8