diff options
Diffstat (limited to 'runtime/stack.h')
| -rw-r--r-- | runtime/stack.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/runtime/stack.h b/runtime/stack.h index 4ee5de1..ab903d6 100644 --- a/runtime/stack.h +++ b/runtime/stack.h @@ -100,6 +100,14 @@ enum VRegBaseRegNum : int { kVRegNonSpecialTempBaseReg = -3, }; +// Special object used to mark the gap in the stack placed when a stack +// overflow fault occurs during implicit stack checking. This is not +// a real object - it is used simply as a valid address to which a +// mirror::ArtMethod* can be compared during a stack walk. It is inserted +// into the stack during the stack overflow signal handling to mark the gap +// in which the memory is protected against read and write. +extern void* stack_overflow_gap_marker; + // A reference from the shadow stack to a MirrorType object within the Java heap. template<class MirrorType> class MANAGED StackReference : public mirror::ObjectReference<false, MirrorType> { |