tree c37a9a1aad0367cf6748690bf30e65c2ca43c4d1
parent 4b551344e6ba3243636d841d5a2d944a20a3a956
author Saleem Abdulrasool <abdulras@google.com> 1659637188 -0700
committer Copybara-Service <copybara-worker@google.com> 1659637244 -0700

debugging: handle alternate signal stacks better on RISCV

In the case that we are unwinding with context, if the retreived frame pointer
matches the signal context, assume that the value is valid and do not perform
confidence checks.  In any other case, continue to perform some validation to
avoid returning an incorrect frame pointer.

Given that the VDSO path is currently untested, remove the code to simplify the
logic in the frame walking.

PiperOrigin-RevId: 465360612
Change-Id: Iac656012182a12814bafecf20225ba68b90b4db1