Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 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 |