Previously, the AEX handler only called C code (more specific to our use case, the code that works on the untrusted-thread stack) for SGX profiling logic and only when Gramine was built in debug mode.
As a preparation for AEX-Notify support, this commit modifies the AEX handler such that it can call C code when Gramine is built in release mode. Also, the AEX handler logic is not restricted to SGX profiling only, so the _PROF/_prof suffixes in related function and variable names are removed.
This commit also adds two small prerequisites for AEX-Notify: (1) eenter_pointer helper so that signal handling logic can learn whether an exception happened at EENTER instruction, and (2) dummy function maybe_raise_pending_signal that will be populated in a later commit.
Description of the changes
Part 1 in AEX-Notify series.
Previously, the AEX handler only called C code (more specific to our use case, the code that works on the untrusted-thread stack) for SGX profiling logic and only when Gramine was built in debug mode.
As a preparation for AEX-Notify support, this commit modifies the AEX handler such that it can call C code when Gramine is built in release mode. Also, the AEX handler logic is not restricted to SGX profiling only, so the
_PROF/_profsuffixes in related function and variable names are removed.This commit also adds two small prerequisites for AEX-Notify: (1)
eenter_pointerhelper so that signal handling logic can learn whether an exception happened at EENTER instruction, and (2) dummy functionmaybe_raise_pending_signalthat will be populated in a later commit.See also related PRs and discussions:
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How to test this PR?
CI is enough.
This change is