Implement CFI for JNI.
CFI is necessary for stack unwinding in gdb, lldb, and libunwind.
Change-Id: I37eb7973f99a6975034cf0e699e138c3a9aba10f
diff --git a/compiler/jni/jni_cfi_test.cc b/compiler/jni/jni_cfi_test.cc
new file mode 100644
index 0000000..3a0d520
--- /dev/null
+++ b/compiler/jni/jni_cfi_test.cc
@@ -0,0 +1,93 @@
+/*
+ * 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 <memory>
+#include <vector>
+
+#include "arch/instruction_set.h"
+#include "cfi_test.h"
+#include "gtest/gtest.h"
+#include "jni/quick/calling_convention.h"
+#include "utils/assembler.h"
+
+#include "jni/jni_cfi_test_expected.inc"
+
+namespace art {
+
+// Run the tests only on host.
+#ifndef HAVE_ANDROID_OS
+
+class JNICFITest : public CFITest {
+ public:
+ // Enable this flag to generate the expected outputs.
+ static constexpr bool kGenerateExpected = false;
+
+ void TestImpl(InstructionSet isa, const char* isa_str,
+ const std::vector<uint8_t>& expected_asm,
+ const std::vector<uint8_t>& expected_cfi) {
+ // Description of simple method.
+ const bool is_static = true;
+ const bool is_synchronized = false;
+ const char* shorty = "IIFII";
+ std::unique_ptr<JniCallingConvention> jni_conv(
+ JniCallingConvention::Create(is_static, is_synchronized, shorty, isa));
+ std::unique_ptr<ManagedRuntimeCallingConvention> mr_conv(
+ ManagedRuntimeCallingConvention::Create(is_static, is_synchronized, shorty, isa));
+ const int frame_size(jni_conv->FrameSize());
+ const std::vector<ManagedRegister>& callee_save_regs = jni_conv->CalleeSaveRegisters();
+
+ // Assemble the method.
+ std::unique_ptr<Assembler> jni_asm(Assembler::Create(isa));
+ jni_asm->BuildFrame(frame_size, mr_conv->MethodRegister(),
+ callee_save_regs, mr_conv->EntrySpills());
+ jni_asm->IncreaseFrameSize(32);
+ jni_asm->DecreaseFrameSize(32);
+ jni_asm->RemoveFrame(frame_size, callee_save_regs);
+ jni_asm->EmitSlowPaths();
+ std::vector<uint8_t> actual_asm(jni_asm->CodeSize());
+ MemoryRegion code(&actual_asm[0], actual_asm.size());
+ jni_asm->FinalizeInstructions(code);
+ ASSERT_EQ(jni_asm->cfi().GetCurrentCFAOffset(), frame_size);
+ const std::vector<uint8_t>& actual_cfi = *(jni_asm->cfi().data());
+
+ if (kGenerateExpected) {
+ GenerateExpected(stdout, isa, isa_str, actual_asm, actual_cfi);
+ } else {
+ EXPECT_EQ(expected_asm, actual_asm);
+ EXPECT_EQ(expected_cfi, actual_cfi);
+ }
+ }
+};
+
+#define TEST_ISA(isa) \
+ TEST_F(JNICFITest, isa) { \
+ std::vector<uint8_t> expected_asm(expected_asm_##isa, \
+ expected_asm_##isa + arraysize(expected_asm_##isa)); \
+ std::vector<uint8_t> expected_cfi(expected_cfi_##isa, \
+ expected_cfi_##isa + arraysize(expected_cfi_##isa)); \
+ TestImpl(isa, #isa, expected_asm, expected_cfi); \
+ }
+
+TEST_ISA(kThumb2)
+TEST_ISA(kArm64)
+TEST_ISA(kX86)
+TEST_ISA(kX86_64)
+TEST_ISA(kMips)
+TEST_ISA(kMips64)
+
+#endif // HAVE_ANDROID_OS
+
+} // namespace art