/*
* Copyright ( C ) 2015 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 "arch/context.h"
#include "art_method-inl.h"
#include "jni.h"
#include "oat/oat_quick_method_header.h"
#include "scoped_thread_state_change-inl.h"
#include "stack.h"
#include "thread.h"
namespace art {
namespace {
class TestVisitor : public StackVisitor {
public :
TestVisitor(Thread* thread, Context* context, mirror::Object* this_value)
REQUIRES_SHARED(Locks::mutator_lock_)
: StackVisitor(thread, context, StackVisitor::StackWalkKind::kIncludeInlinedFrames),
this_value_(this_value),
found_method_index_(0 ) {}
bool VisitFrame() override REQUIRES_SHARED(Locks::mutator_lock_) {
ArtMethod* m = GetMethod();
std::string m_name(m->GetName());
if (m_name.compare("testSimpleVReg" ) == 0 ) {
found_method_index_ = 1 ;
uint32_t value = 0 ;
CHECK(GetVReg(m, 0 , kIntVReg, &value));
CHECK_EQ(value, 42 u);
bool success = GetVReg(m, 1 , kIntVReg, &value);
if (!IsShadowFrame() && GetCurrentOatQuickMethodHeader()->IsOptimized()) {
CHECK(!success);
}
success = GetVReg(m, 2 , kIntVReg, &value);
if (!IsShadowFrame() && GetCurrentOatQuickMethodHeader()->IsOptimized()) {
CHECK(!success);
}
CHECK(GetVReg(m, 3 , kReferenceVReg, &value));
CHECK_EQ(reinterpret_cast <mirror::Object*>(value), this_value_);
CHECK(GetVReg(m, 4 , kIntVReg, &value));
CHECK_EQ(value, 1 u);
CHECK(GetVReg(m, 5 , kFloatVReg, &value));
uint32_t cast = bit_cast<uint32_t, float >(1 .0 f);
CHECK_EQ(value, cast);
CHECK(GetVReg(m, 6 , kIntVReg, &value));
CHECK_EQ(value, 2 u);
CHECK(GetVReg(m, 7 , kIntVReg, &value));
CHECK_EQ(value, true );
CHECK(GetVReg(m, 8 , kIntVReg, &value));
CHECK_EQ(value, 3 u);
CHECK(GetVReg(m, 9 , kIntVReg, &value));
CHECK_EQ(value, static_cast <uint32_t>('c' ));
} else if (m_name.compare("testPairVReg" ) == 0 ) {
found_method_index_ = 2 ;
uint64_t value = 0 ;
CHECK(GetVRegPair(m, 0 , kLongLoVReg, kLongHiVReg, &value));
CHECK_EQ(value, 42 u);
bool success = GetVRegPair(m, 2 , kLongLoVReg, kLongHiVReg, &value);
if (!IsShadowFrame() && GetCurrentOatQuickMethodHeader()->IsOptimized()) {
CHECK(!success);
}
success = GetVRegPair(m, 4 , kLongLoVReg, kLongHiVReg, &value);
if (!IsShadowFrame() && GetCurrentOatQuickMethodHeader()->IsOptimized()) {
CHECK(!success);
}
uint32_t value32 = 0 ;
CHECK(GetVReg(m, 6 , kReferenceVReg, &value32));
CHECK_EQ(reinterpret_cast <mirror::Object*>(value32), this_value_);
CHECK(GetVRegPair(m, 7 , kLongLoVReg, kLongHiVReg, &value));
CHECK_EQ(static_cast <int64_t>(value), std::numeric_limits<int64_t>::min());
CHECK(GetVRegPair(m, 9 , kLongLoVReg, kLongHiVReg, &value));
CHECK_EQ(static_cast <int64_t>(value), std::numeric_limits<int64_t>::max());
CHECK(GetVRegPair(m, 11 , kLongLoVReg, kLongHiVReg, &value));
CHECK_EQ(value, 0 u);
CHECK(GetVRegPair(m, 13 , kDoubleLoVReg, kDoubleHiVReg, &value));
uint64_t cast = bit_cast<uint64_t, double >(2 .0 );
CHECK_EQ(value, cast);
}
return true ;
}
mirror::Object* this_value_;
// Value returned to Java to ensure the methods testSimpleVReg and testPairVReg
// have been found and tested.
jint found_method_index_;
};
extern "C" JNIEXPORT jint JNICALL Java_Main_doNativeCall(JNIEnv*, jobject value) {
ScopedObjectAccess soa(Thread::Current());
std::unique_ptr<Context> context(Context::Create());
TestVisitor visitor(soa.Self(), context.get(), soa.Decode<mirror::Object>(value).Ptr());
visitor.WalkStack();
return visitor.found_method_index_;
}
} // namespace
} // namespace art
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(vorverarbeitet am 2026-06-29)
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