Reserve bits in the lock word for read barriers.
This prepares for the CC collector to use the standard object header
model by storing the read barrier state in the lock word.
Bug: 19355854
Bug: 12687968
Change-Id: Ia7585662dd2cebf0479a3e74f734afe5059fb70f
diff --git a/runtime/asm_support.h b/runtime/asm_support.h
index a35e05b..ee70fe7 100644
--- a/runtime/asm_support.h
+++ b/runtime/asm_support.h
@@ -18,6 +18,7 @@
#define ART_RUNTIME_ASM_SUPPORT_H_
#if defined(__cplusplus)
+#include "lock_word.h"
#include "mirror/art_method.h"
#include "mirror/class.h"
#include "mirror/string.h"
@@ -156,6 +157,27 @@
ADD_TEST_EQ(MIRROR_ART_METHOD_QUICK_CODE_OFFSET_64,
art::mirror::ArtMethod::EntryPointFromQuickCompiledCodeOffset(8).Int32Value())
+#define LOCK_WORD_STATE_SHIFT 30
+ADD_TEST_EQ(LOCK_WORD_STATE_SHIFT, static_cast<int32_t>(art::LockWord::kStateShift))
+
+#define LOCK_WORD_STATE_MASK 0xC0000000
+ADD_TEST_EQ(LOCK_WORD_STATE_MASK, static_cast<uint32_t>(art::LockWord::kStateMaskShifted))
+
+#define LOCK_WORD_READ_BARRIER_STATE_SHIFT 28
+ADD_TEST_EQ(LOCK_WORD_READ_BARRIER_STATE_SHIFT,
+ static_cast<int32_t>(art::LockWord::kReadBarrierStateShift))
+
+#define LOCK_WORD_READ_BARRIER_STATE_MASK 0x30000000
+ADD_TEST_EQ(LOCK_WORD_READ_BARRIER_STATE_MASK,
+ static_cast<int32_t>(art::LockWord::kReadBarrierStateMaskShifted))
+
+#define LOCK_WORD_READ_BARRIER_STATE_MASK_TOGGLED 0xCFFFFFFF
+ADD_TEST_EQ(LOCK_WORD_READ_BARRIER_STATE_MASK_TOGGLED,
+ static_cast<uint32_t>(art::LockWord::kReadBarrierStateMaskShiftedToggled))
+
+#define LOCK_WORD_THIN_LOCK_COUNT_ONE 65536
+ADD_TEST_EQ(LOCK_WORD_THIN_LOCK_COUNT_ONE, static_cast<int32_t>(art::LockWord::kThinLockCountOne))
+
#if defined(__cplusplus)
} // End of CheckAsmSupportOffsets.
#endif