| // 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)); |
| #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)); |
| #else |
| #error Host architecture was not detected as supported by v8 |
| #endif |
| |
| args.GetReturnValue().Set(v8::Integer::NewFromUnsigned( |
| args.GetIsolate(), static_cast<uint32_t>(sp_addr))); |
| } |
| |
| |
| TEST(StackAlignment) { |
| v8::Isolate* isolate = CcTest::isolate(); |
| v8::HandleScope handle_scope(isolate); |
| v8::Handle<v8::ObjectTemplate> global_template = |
| v8::ObjectTemplate::New(isolate); |
| global_template->Set(v8_str("get_stack_pointer"), |
| v8::FunctionTemplate::New(isolate, GetStackPointer)); |
| |
| LocalContext env(NULL, global_template); |
| CompileRun( |
| "function foo() {" |
| " return get_stack_pointer();" |
| "}"); |
| |
| v8::Local<v8::Object> global_object = env->Global(); |
| v8::Local<v8::Function> foo = |
| v8::Local<v8::Function>::Cast(global_object->Get(v8_str("foo"))); |
| |
| v8::Local<v8::Value> result = foo->Call(global_object, 0, NULL); |
| CHECK_EQ(0, result->Uint32Value() % v8::base::OS::ActivationFrameAlignment()); |
| } |
| |
| #endif // V8_CC_GNU |