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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 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;
}
};
// 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,
RuntimeCalleeSaveFrame::GetReturnPcOffset(CalleeSaveType::kSaveRefsAndArgs));
CheckPCOffset(
kRuntimeISA,
CalleeSaveType::kSaveRefsOnly,
RuntimeCalleeSaveFrame::GetReturnPcOffset(CalleeSaveType::kSaveRefsOnly));
CheckPCOffset(
kRuntimeISA,
CalleeSaveType::kSaveAllCalleeSaves,
RuntimeCalleeSaveFrame::GetReturnPcOffset(CalleeSaveType::kSaveAllCalleeSaves));
CheckPCOffset(
kRuntimeISA,
CalleeSaveType::kSaveEverything,
RuntimeCalleeSaveFrame::GetReturnPcOffset(CalleeSaveType::kSaveEverything));
CheckPCOffset(
kRuntimeISA,
CalleeSaveType::kSaveEverythingForClinit,
RuntimeCalleeSaveFrame::GetReturnPcOffset(CalleeSaveType::kSaveEverythingForClinit));
CheckPCOffset(
kRuntimeISA,
CalleeSaveType::kSaveEverythingForSuspendCheck,
RuntimeCalleeSaveFrame::GetReturnPcOffset(CalleeSaveType::kSaveEverythingForSuspendCheck));
}
} // namespace art
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