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/*
* Copyright (C) 2014 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <stdint.h>
#include "art_method-inl.h"
#include "base/callee_save_type.h"
#include "callee_save_frame.h"
#include "common_runtime_test.h"
#include "quick/quick_method_frame_info.h"
namespace art {
class QuickTrampolineEntrypointsTest : public CommonRuntimeTest {
protected:
void SetUpRuntimeOptions(RuntimeOptions *options) OVERRIDE {
// Use 64-bit ISA for runtime setup to make method size potentially larger
// than necessary (rather than smaller) during CreateCalleeSaveMethod
options->push_back(std::make_pair("imageinstructionset", "x86_64"));
}
// Do not do any of the finalization. We don't want to run any code, we don't need the heap
// prepared, it actually will be a problem with setting the instruction set to x86_64 in
// SetUpRuntimeOptions.
void FinalizeSetup() OVERRIDE {
ASSERT_EQ(InstructionSet::kX86_64, Runtime::Current()->GetInstructionSet());
}
static ArtMethod* CreateCalleeSaveMethod(InstructionSet isa, CalleeSaveType type)
NO_THREAD_SAFETY_ANALYSIS {
Runtime* r = Runtime::Current();
Thread* t = Thread::Current();
ScopedObjectAccess soa(t);
r->SetInstructionSet(isa);
ArtMethod* save_method = r->CreateCalleeSaveMethod();
r->SetCalleeSaveMethod(save_method, type);
return save_method;
}
static void CheckFrameSize(InstructionSet isa, CalleeSaveType type, uint32_t save_size)
NO_THREAD_SAFETY_ANALYSIS {
ArtMethod* save_method = CreateCalleeSaveMethod(isa, type);
QuickMethodFrameInfo frame_info = Runtime::Current()->GetRuntimeMethodFrameInfo(save_method);
EXPECT_EQ(frame_info.FrameSizeInBytes(), save_size) << "Expected and real size differs for "
<< type << " core spills=" << std::hex << frame_info.CoreSpillMask() << " fp spills="
<< frame_info.FpSpillMask() << std::dec << " ISA " << isa;
}
static void CheckPCOffset(InstructionSet isa, CalleeSaveType type, size_t pc_offset)
NO_THREAD_SAFETY_ANALYSIS {
ArtMethod* save_method = CreateCalleeSaveMethod(isa, type);
QuickMethodFrameInfo frame_info = Runtime::Current()->GetRuntimeMethodFrameInfo(save_method);
EXPECT_EQ(frame_info.GetReturnPcOffset(), pc_offset)
<< "Expected and real pc offset differs for " << type
<< " core spills=" << std::hex << frame_info.CoreSpillMask()
<< " fp spills=" << frame_info.FpSpillMask() << std::dec << " ISA " << isa;
}
};
// Note: these tests are all runtime tests. They let the Runtime create the corresponding ArtMethod
// and check against it. Technically we know and expect certain values, but the Runtime code is
// not constexpr, so we cannot make this compile-time checks (and I want the Runtime code tested).
// This test ensures that kQuickCalleeSaveFrame_RefAndArgs_FrameSize is correct.
TEST_F(QuickTrampolineEntrypointsTest, FrameSize) {
// We have to use a define here as the callee_save_frame.h functions are constexpr.
#define CHECK_FRAME_SIZE(isa) \
CheckFrameSize(isa, \
CalleeSaveType::kSaveRefsAndArgs, \
GetCalleeSaveFrameSize(isa, CalleeSaveType::kSaveRefsAndArgs)); \
CheckFrameSize(isa, \
CalleeSaveType::kSaveRefsOnly, \
GetCalleeSaveFrameSize(isa, CalleeSaveType::kSaveRefsOnly)); \
CheckFrameSize(isa, \
CalleeSaveType::kSaveAllCalleeSaves, \
GetCalleeSaveFrameSize(isa, CalleeSaveType::kSaveAllCalleeSaves))
CHECK_FRAME_SIZE(kArm);
CHECK_FRAME_SIZE(kArm64);
CHECK_FRAME_SIZE(kMips);
CHECK_FRAME_SIZE(kMips64);
CHECK_FRAME_SIZE(kX86);
CHECK_FRAME_SIZE(kX86_64);
}
// This test ensures that GetConstExprPointerSize is correct with respect to
// GetInstructionSetPointerSize.
TEST_F(QuickTrampolineEntrypointsTest, PointerSize) {
EXPECT_EQ(GetInstructionSetPointerSize(kArm), GetConstExprPointerSize(kArm));
EXPECT_EQ(GetInstructionSetPointerSize(kArm64), GetConstExprPointerSize(kArm64));
EXPECT_EQ(GetInstructionSetPointerSize(kMips), GetConstExprPointerSize(kMips));
EXPECT_EQ(GetInstructionSetPointerSize(kMips64), GetConstExprPointerSize(kMips64));
EXPECT_EQ(GetInstructionSetPointerSize(kX86), GetConstExprPointerSize(kX86));
EXPECT_EQ(GetInstructionSetPointerSize(kX86_64), GetConstExprPointerSize(kX86_64));
}
// This test ensures that the constexpr specialization of the return PC offset computation in
// GetCalleeSavePCOffset is correct.
TEST_F(QuickTrampolineEntrypointsTest, ReturnPC) {
// Ensure that the computation in callee_save_frame.h correct.
// Note: we can only check against the kRuntimeISA, because the ArtMethod computation uses
// sizeof(void*), which is wrong when the target bitwidth is not the same as the host's.
CheckPCOffset(kRuntimeISA, CalleeSaveType::kSaveRefsAndArgs,
GetCalleeSaveReturnPcOffset(kRuntimeISA, CalleeSaveType::kSaveRefsAndArgs));
CheckPCOffset(kRuntimeISA, CalleeSaveType::kSaveRefsOnly,
GetCalleeSaveReturnPcOffset(kRuntimeISA, CalleeSaveType::kSaveRefsOnly));
CheckPCOffset(kRuntimeISA, CalleeSaveType::kSaveAllCalleeSaves,
GetCalleeSaveReturnPcOffset(kRuntimeISA, CalleeSaveType::kSaveAllCalleeSaves));
}
} // namespace art
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