135 lines
4.7 KiB
C++
135 lines
4.7 KiB
C++
/*
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* Copyright (C) 2014 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "stack_map.h"
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#include "stack_map_stream.h"
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#include "utils/arena_bit_vector.h"
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#include "gtest/gtest.h"
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namespace art {
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bool SameBits(MemoryRegion region, const BitVector& bit_vector) {
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for (size_t i = 0; i < region.size_in_bits(); ++i) {
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if (region.LoadBit(i) != bit_vector.IsBitSet(i)) {
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return false;
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}
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}
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return true;
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}
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TEST(StackMapTest, Test1) {
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ArenaPool pool;
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ArenaAllocator arena(&pool);
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StackMapStream<size_t> stream(&arena);
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ArenaBitVector sp_mask(&arena, 0, false);
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stream.AddStackMapEntry(0, 64, 0x3, &sp_mask, 2, 0);
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stream.AddDexRegisterEntry(DexRegisterMap::kInStack, 0);
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stream.AddDexRegisterEntry(DexRegisterMap::kConstant, -2);
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size_t size = stream.ComputeNeededSize();
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void* memory = arena.Alloc(size, kArenaAllocMisc);
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MemoryRegion region(memory, size);
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stream.FillIn(region);
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CodeInfo<size_t> code_info(region);
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ASSERT_EQ(0u, code_info.GetStackMaskSize());
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ASSERT_EQ(1u, code_info.GetNumberOfStackMaps());
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StackMap<size_t> stack_map = code_info.GetStackMapAt(0);
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ASSERT_TRUE(stack_map.Equals(code_info.GetStackMapForDexPc(0)));
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ASSERT_TRUE(stack_map.Equals(code_info.GetStackMapForNativePc(64)));
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ASSERT_EQ(0u, stack_map.GetDexPc());
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ASSERT_EQ(64u, stack_map.GetNativePc());
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ASSERT_EQ(0x3u, stack_map.GetRegisterMask());
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ASSERT_FALSE(stack_map.HasInlineInfo());
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MemoryRegion stack_mask = stack_map.GetStackMask();
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ASSERT_TRUE(SameBits(stack_mask, sp_mask));
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DexRegisterMap dex_registers = code_info.GetDexRegisterMapOf(stack_map, 2);
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ASSERT_EQ(DexRegisterMap::kInStack, dex_registers.GetLocationKind(0));
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ASSERT_EQ(DexRegisterMap::kConstant, dex_registers.GetLocationKind(1));
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ASSERT_EQ(0, dex_registers.GetValue(0));
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ASSERT_EQ(-2, dex_registers.GetValue(1));
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}
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TEST(StackMapTest, Test2) {
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ArenaPool pool;
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ArenaAllocator arena(&pool);
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StackMapStream<size_t> stream(&arena);
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ArenaBitVector sp_mask1(&arena, 0, true);
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sp_mask1.SetBit(2);
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sp_mask1.SetBit(4);
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stream.AddStackMapEntry(0, 64, 0x3, &sp_mask1, 2, 2);
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stream.AddDexRegisterEntry(DexRegisterMap::kInStack, 0);
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stream.AddDexRegisterEntry(DexRegisterMap::kConstant, -2);
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stream.AddInlineInfoEntry(42);
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stream.AddInlineInfoEntry(82);
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ArenaBitVector sp_mask2(&arena, 0, true);
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sp_mask2.SetBit(3);
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sp_mask1.SetBit(8);
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stream.AddStackMapEntry(1, 128, 0xFF, &sp_mask2, 1, 0);
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stream.AddDexRegisterEntry(DexRegisterMap::kInRegister, 0);
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size_t size = stream.ComputeNeededSize();
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void* memory = arena.Alloc(size, kArenaAllocMisc);
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MemoryRegion region(memory, size);
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stream.FillIn(region);
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CodeInfo<size_t> code_info(region);
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ASSERT_EQ(1u, code_info.GetStackMaskSize());
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ASSERT_EQ(2u, code_info.GetNumberOfStackMaps());
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StackMap<size_t> stack_map = code_info.GetStackMapAt(0);
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ASSERT_TRUE(stack_map.Equals(code_info.GetStackMapForDexPc(0)));
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ASSERT_TRUE(stack_map.Equals(code_info.GetStackMapForNativePc(64)));
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ASSERT_EQ(0u, stack_map.GetDexPc());
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ASSERT_EQ(64u, stack_map.GetNativePc());
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ASSERT_EQ(0x3u, stack_map.GetRegisterMask());
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MemoryRegion stack_mask = stack_map.GetStackMask();
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ASSERT_TRUE(SameBits(stack_mask, sp_mask1));
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DexRegisterMap dex_registers = code_info.GetDexRegisterMapOf(stack_map, 2);
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ASSERT_EQ(DexRegisterMap::kInStack, dex_registers.GetLocationKind(0));
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ASSERT_EQ(DexRegisterMap::kConstant, dex_registers.GetLocationKind(1));
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ASSERT_EQ(0, dex_registers.GetValue(0));
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ASSERT_EQ(-2, dex_registers.GetValue(1));
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InlineInfo inline_info = code_info.GetInlineInfoOf(stack_map);
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ASSERT_EQ(2u, inline_info.GetDepth());
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ASSERT_EQ(42u, inline_info.GetMethodReferenceIndexAtDepth(0));
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ASSERT_EQ(82u, inline_info.GetMethodReferenceIndexAtDepth(1));
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stack_map = code_info.GetStackMapAt(1);
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ASSERT_TRUE(stack_map.Equals(code_info.GetStackMapForDexPc(1u)));
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ASSERT_TRUE(stack_map.Equals(code_info.GetStackMapForNativePc(128u)));
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ASSERT_EQ(1u, stack_map.GetDexPc());
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ASSERT_EQ(128u, stack_map.GetNativePc());
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ASSERT_EQ(0xFFu, stack_map.GetRegisterMask());
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stack_mask = stack_map.GetStackMask();
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ASSERT_TRUE(SameBits(stack_mask, sp_mask2));
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ASSERT_FALSE(stack_map.HasInlineInfo());
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}
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} // namespace art
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