JVMTI PopFrame support

Implement support for the JVMTI can_pop_frames capability. This works
by marking shadow-frames with a bit that forces it to be popped or an
instruction to be retried. When a PopFrame is requested the plugin
will deoptimize the targeted thread and force the interpreter to deal
with the frame pop. If the can_pop_frames capability is enabled the
runtime will be forced to handle all exceptions through the
interpreter. This is required to support PopFrame during some
exception events.

Test: ./test.py --host
Test: ./art/tools/run-libjdwp-tests.sh --mode=host
Bug: 73255278
Bug: 111357976
Change-Id: I62d6b1f4ff387c794ba45093c3d6773aaf642067

1 files changed, 9 insertions, 0 deletions

diff --git a/runtime/common_dex_operations.h b/runtime/common_dex_operations.h
index c29043e7c6..15ab5f0387 100644
--- a/runtime/common_dex_operations.h
+++ b/runtime/common_dex_operations.h
@@ -27,6 +27,7 @@
 #include "dex/primitive.h"
 #include "handle_scope-inl.h"
 #include "instrumentation.h"
+#include "interpreter/interpreter.h"
 #include "interpreter/shadow_frame.h"
 #include "interpreter/unstarted_runtime.h"
 #include "jvalue-inl.h"
@@ -172,6 +173,14 @@ ALWAYS_INLINE bool DoFieldPutCommon(Thread* self,
     if (UNLIKELY(self->IsExceptionPending())) {
       return false;
     }
+    if (shadow_frame.GetForcePopFrame()) {
+      // We need to check this here since we expect that the FieldWriteEvent happens before the
+      // actual field write. If one pops the stack we should not modify the field.  The next
+      // instruction will force a pop. Return true.
+      DCHECK(Runtime::Current()->AreNonStandardExitsEnabled());
+      DCHECK(interpreter::PrevFrameWillRetry(self, shadow_frame));
+      return true;
+    }
   }
 
   switch (field_type) {