tree 3344c1be3a6f3d251d3949d83c4241394901e0fe
parent fc31677a1dc96bb9286c30a1f047751c0ff774e0
author David Benjamin <davidben@google.com> 1549164598 -0600
committer CQ bot account: commit-bot@chromium.org <commit-bot@chromium.org> 1549394535 +0000

Implement unwind testing for Windows.

Unfortunately, due to most OpenSSL assembly using custom exception
handlers to unwind, most of our assembly doesn't work with
non-destructive unwind. For now, CHECK_ABI behaves like
CHECK_ABI_NO_UNWIND on Windows, and CHECK_ABI_SEH will test unwinding on
both platforms.

The tests do, however, work with the unwind-code-based assembly we
recently added, as well as the clmul-based GHASH which is also
code-based. Remove the ad-hoc SEH tests which intentionally hit memory
access exceptions, now that we can test unwind directly.

Now that we can test it, the next step is to implement SEH directives in
perlasm so writing these unwind codes is less of a chore.

Bug: 259
Change-Id: I23a57a22c5dc9fa4513f575f18192335779678a5
Reviewed-on: https://boringssl-review.googlesource.com/c/34784
Commit-Queue: David Benjamin <davidben@google.com>
Reviewed-by: Adam Langley <agl@google.com>