tree b43adebb42e4f271bfea52d063f50e4b7c3bd87d
parent 7a968ae283ecd994223d3c327ffabbcf8b6227db
author Martin Kustermann <kustermann@google.com> 1544723102 +0000
committer commit-bot@chromium.org <commit-bot@chromium.org> 1544723102 +0000

[VM] Bare instructions - Part 3: Add support for building a PC -> Code mapping table

This CL adds a [ReversePcLookupCache] which, based on a list of code
objects, builds up a binary searchable table for mapping PCs to Code
objects (where all the metadata is available, like stackmaps, ...).

This CL also adds stack walking support for "bare instruction" frames.

In a later part we will start emitting the sorted list of code objects
(via the new field in the object store) under a flag.

Issue https://github.com/dart-lang/sdk/issues/33274

Change-Id: I3c06c12bc0fb266dc1bd843a4a11b5208773151d
Reviewed-on: https://dart-review.googlesource.com/c/85746
Commit-Queue: Martin Kustermann <kustermann@google.com>
Reviewed-by: Vyacheslav Egorov <vegorov@google.com>