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 "include/v8stdint.h" 6 #include "src/base/build_config.h" 7 #include "src/base/platform/platform.h" 8 #include "test/cctest/cctest.h" 9 10 #ifdef V8_CC_GNU 11 12 static uintptr_t sp_addr = 0; 13 14 void GetStackPointer(const v8::FunctionCallbackInfo<v8::Value>& args) { 15 #if V8_HOST_ARCH_X64 16 __asm__ __volatile__("mov %%rsp, %0" : "=g"(sp_addr)); 17 #elif V8_HOST_ARCH_IA32 18 __asm__ __volatile__("mov %%esp, %0" : "=g"(sp_addr)); 19 #elif V8_HOST_ARCH_ARM 20 __asm__ __volatile__("str %%sp, %0" : "=g"(sp_addr)); 21 #elif V8_HOST_ARCH_ARM64 22 __asm__ __volatile__("mov x16, sp; str x16, %0" : "=g"(sp_addr)); 23 #elif V8_HOST_ARCH_MIPS 24 __asm__ __volatile__("sw $sp, %0" : "=g"(sp_addr)); 25 #elif V8_HOST_ARCH_MIPS64 26 __asm__ __volatile__("sd $sp, %0" : "=g"(sp_addr)); 27 #else 28 #error Host architecture was not detected as supported by v8 29 #endif 30 31 args.GetReturnValue().Set(v8::Integer::NewFromUnsigned( 32 args.GetIsolate(), static_cast<uint32_t>(sp_addr))); 33 } 34 35 36 TEST(StackAlignment) { 37 v8::Isolate* isolate = CcTest::isolate(); 38 v8::HandleScope handle_scope(isolate); 39 v8::Handle<v8::ObjectTemplate> global_template = 40 v8::ObjectTemplate::New(isolate); 41 global_template->Set(v8_str("get_stack_pointer"), 42 v8::FunctionTemplate::New(isolate, GetStackPointer)); 43 44 LocalContext env(NULL, global_template); 45 CompileRun( 46 "function foo() {" 47 " return get_stack_pointer();" 48 "}"); 49 50 v8::Local<v8::Object> global_object = env->Global(); 51 v8::Local<v8::Function> foo = 52 v8::Local<v8::Function>::Cast(global_object->Get(v8_str("foo"))); 53 54 v8::Local<v8::Value> result = foo->Call(global_object, 0, NULL); 55 CHECK_EQ(0, result->Uint32Value() % v8::base::OS::ActivationFrameAlignment()); 56 } 57 58 #endif // V8_CC_GNU 59
