diff options
Diffstat (limited to 'compiler/utils/jni_macro_assembler.cc')
| -rw-r--r-- | compiler/utils/jni_macro_assembler.cc | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/compiler/utils/jni_macro_assembler.cc b/compiler/utils/jni_macro_assembler.cc index 7a90a46f51..e17d915ad7 100644 --- a/compiler/utils/jni_macro_assembler.cc +++ b/compiler/utils/jni_macro_assembler.cc @@ -38,6 +38,8 @@ #include "base/globals.h" #include "base/memory_region.h" #include "gc_root.h" +#include "jni/jni_env_ext.h" +#include "jni/local_reference_table.h" #include "stack_reference.h" namespace art HIDDEN { @@ -129,4 +131,54 @@ template void JNIMacroAssembler<PointerSize::k64>::LoadStackReference(ManagedRegister dest, FrameOffset offs); +template <PointerSize kPointerSize> +void JNIMacroAssembler<kPointerSize>::PushLocalReferenceFrame(ManagedRegister jni_env_reg, + ManagedRegister saved_cookie_reg, + ManagedRegister temp_reg) { + constexpr size_t kLRTSegmentStateSize = sizeof(jni::LRTSegmentState); + const MemberOffset jni_env_cookie_offset = JNIEnvExt::LocalRefCookieOffset(kPointerSize); + const MemberOffset jni_env_segment_state_offset = JNIEnvExt::SegmentStateOffset(kPointerSize); + + // Load the old cookie that we shall need to restore. + Load(saved_cookie_reg, jni_env_reg, jni_env_cookie_offset, kLRTSegmentStateSize); + + // Set the cookie to the current segment state. + Load(temp_reg, jni_env_reg, jni_env_segment_state_offset, kLRTSegmentStateSize); + Store(jni_env_reg, jni_env_cookie_offset, temp_reg, kLRTSegmentStateSize); +} + +template +void JNIMacroAssembler<PointerSize::k32>::PushLocalReferenceFrame(ManagedRegister jni_env_reg, + ManagedRegister saved_cookie_reg, + ManagedRegister temp_reg); +template +void JNIMacroAssembler<PointerSize::k64>::PushLocalReferenceFrame(ManagedRegister jni_env_reg, + ManagedRegister saved_cookie_reg, + ManagedRegister temp_reg); + +template <PointerSize kPointerSize> +void JNIMacroAssembler<kPointerSize>::PopLocalReferenceFrame(ManagedRegister jni_env_reg, + ManagedRegister saved_cookie_reg, + ManagedRegister temp_reg) { + constexpr size_t kLRTSegmentStateSize = sizeof(jni::LRTSegmentState); + const MemberOffset jni_env_cookie_offset = JNIEnvExt::LocalRefCookieOffset(kPointerSize); + const MemberOffset jni_env_segment_state_offset = JNIEnvExt::SegmentStateOffset(kPointerSize); + + // Set the current segment state to the current cookie. + Load(temp_reg, jni_env_reg, jni_env_cookie_offset, kLRTSegmentStateSize); + Store(jni_env_reg, jni_env_segment_state_offset, temp_reg, kLRTSegmentStateSize); + + // Restore the cookie to the saved value. + Store(jni_env_reg, jni_env_cookie_offset, saved_cookie_reg, kLRTSegmentStateSize); +} + +template +void JNIMacroAssembler<PointerSize::k32>::PopLocalReferenceFrame(ManagedRegister jni_env_reg, + ManagedRegister saved_cookie_reg, + ManagedRegister temp_reg); +template +void JNIMacroAssembler<PointerSize::k64>::PopLocalReferenceFrame(ManagedRegister jni_env_reg, + ManagedRegister saved_cookie_reg, + ManagedRegister temp_reg); + } // namespace art |