analysis and instrumentation support for Wasm reference and table instructions - #10
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abelstuker wants to merge 7 commits into
Open
analysis and instrumentation support for Wasm reference and table instructions#10abelstuker wants to merge 7 commits into
abelstuker wants to merge 7 commits into
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Added instrumentation logic and analysis hooks for the following instructions:
Note: funcrefs are never accessible from within the analysis.
As with the existing analysis hooks, some hooks allow for modification of stack operands.
Additionally, some new hooks (i.e. table_copy and table_init) let the implemented analysis modify multiple stack operands in the same hook.
Due to the lack of multivalue return support, the set of modified values are not returned by the trap, but they are stored within the analysis module instead. The analysis module exposes functions for the retrieval of those values by the instrumented input program. Hereby, the (potentially modified) values retrieved from the analysis logic are put on the stack as operands for the original instruction.