DynamoRIO / DynamoRIO/dynamorio
track app actions to maintain lazy fpstate save on delayed signal
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OpSys-Linux
Performance
Priority-Low
Type-Feature
- Dominant language
- C
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Description
_From [bruen...@google.com](https://code.google.com/u/109494838902877177630/) on December 17, 2011 14:25:27_
xref issue #637 xref issue #639 today when DR delays signal delivery, even if fpstate was not saved by the
kernel b/c the app hadn't used any fp/xmm instrs yet, DR must save on the
delivery just in case the app did use such instrs in between.
this issue covers tracking the app actions in order to avoid the fpstate
save when not necessary.
_Original issue: http://code.google.com/p/dynamorio/issues/detail?id=641_
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