1// Copyright (c) 2014, the Dart project authors. Please see the AUTHORS file
2// for details. All rights reserved. Use of this source code is governed by a
3// BSD-style license that can be found in the LICENSE file.
4
5#include "vm/globals.h"
6#if defined(TARGET_ARCH_ARM64)
7
8#include "vm/code_patcher.h"
9#include "vm/compiler/assembler/assembler.h"
10#include "vm/dart_entry.h"
11#include "vm/instructions.h"
12#include "vm/native_entry.h"
13#include "vm/native_entry_test.h"
14#include "vm/runtime_entry.h"
15#include "vm/stub_code.h"
16#include "vm/symbols.h"
17#include "vm/unit_test.h"
18
19namespace dart {
20
21#define __ assembler->
22
23ASSEMBLER_TEST_GENERATE(IcDataAccess, assembler) {
24 Thread* thread = Thread::Current();
25 const String& class_name = String::Handle(Symbols::New(thread, "ownerClass"));
26 const Script& script = Script::Handle();
27 const Class& owner_class = Class::Handle(Class::New(
28 Library::Handle(), class_name, script, TokenPosition::kNoSource));
29 const String& function_name =
30 String::Handle(Symbols::New(thread, "callerFunction"));
31 const Function& function = Function::Handle(Function::New(
32 function_name, FunctionLayout::kRegularFunction, true, false, false,
33 false, false, owner_class, TokenPosition::kNoSource));
34
35 const String& target_name = String::Handle(String::New("targetFunction"));
36 const intptr_t kTypeArgsLen = 0;
37 const intptr_t kNumArgs = 1;
38 const Array& args_descriptor = Array::Handle(ArgumentsDescriptor::NewBoxed(
39 kTypeArgsLen, kNumArgs, Object::null_array()));
40 const ICData& ic_data = ICData::ZoneHandle(ICData::New(
41 function, target_name, args_descriptor, 15, 1, ICData::kInstance));
42 const Code& stub = StubCode::OneArgCheckInlineCache();
43
44 // Code accessing pp is generated, but not executed. Uninitialized pp is OK.
45 __ set_constant_pool_allowed(true);
46
47 compiler::ObjectPoolBuilder& op = __ object_pool_builder();
48 const intptr_t ic_data_index =
49 op.AddObject(ic_data, ObjectPool::Patchability::kPatchable);
50 const intptr_t stub_index =
51 op.AddObject(stub, ObjectPool::Patchability::kPatchable);
52 ASSERT((ic_data_index + 1) == stub_index);
53 __ LoadDoubleWordFromPoolOffset(R5, CODE_REG,
54 ObjectPool::element_offset(ic_data_index));
55 __ ldr(LR, compiler::FieldAddress(
56 CODE_REG,
57 Code::entry_point_offset(Code::EntryKind::kMonomorphic)));
58 __ blr(LR);
59 __ ret();
60}
61
62ASSEMBLER_TEST_RUN(IcDataAccess, test) {
63 uword end = test->payload_start() + test->code().Size();
64 uword return_address = end - Instr::kInstrSize;
65 ICData& ic_data = ICData::Handle();
66 CodePatcher::GetInstanceCallAt(return_address, test->code(), &ic_data);
67 EXPECT_STREQ("targetFunction",
68 String::Handle(ic_data.target_name()).ToCString());
69 EXPECT_EQ(1, ic_data.NumArgsTested());
70 EXPECT_EQ(0, ic_data.NumberOfChecks());
71}
72
73} // namespace dart
74
75#endif // defined TARGET_ARCH_ARM64
76