This repository was archived by the owner on Mar 24, 2022. It is now read-only.

Stack unwinding improvements#254

Open

acfoltzer wants to merge 37 commits into

mainfrom

acf/unwinding-improvements

Commits on Jun 19, 2020

appears to be a start

awortman-fastly
authored and
iximeow
committed
temporarily disable panic_unwind in hostcall macro

acfoltzer
authored and
iximeow
committed
WIP, get pieces in place for backstop CFI directives to work

awortman-fastly
authored and
iximeow
committed
add ld argumet to get eh_frame_hdr emitted

awortman-fastly
authored and
iximeow
committed
temporarily copy in Rust's system unwinder bindings, and win in ph2

acfoltzer
authored and
iximeow
committed
experimental checkin of CFA calculation expression

acfoltzer
authored and
iximeow
committed
🎉 add CFI for all saved registers in the backstop

acfoltzer
authored and
iximeow
committed
remove the attempt at a landing pad, and its associated code

acfoltzer
authored and
iximeow
committed
add nested hostcall unwinding test

acfoltzer
authored and
iximeow
committed
add test that panics across guest with callee-saved variables

acfoltzer
authored and
iximeow
committed
update cranelift version and add callee-saved regs test

acfoltzer
authored and
iximeow
committed
add (currently-ignored) callee-saved registers test

acfoltzer
authored and
iximeow
committed
switch to the most recent working nightly, and fix for wasi-sdk 6

acfoltzer
authored and
iximeow
committed
add `#[unwind(allowed)]` to hostcalls and enable relevant test

acfoltzer
authored and
iximeow
committed
add unwind attribute to spectest crate, install nightly in devenv

acfoltzer
authored and
iximeow
committed
wip: induce unwinding when resetting a faulted instance

acfoltzer
authored and
iximeow
committed
add stub function so we can pad stack to ABI requirements

awortman-fastly
authored and
iximeow
committed
add a helper to push values onto a guest stack

awortman-fastly
authored and
iximeow
committed
found some sharp bits

awortman-fastly
authored and
iximeow
committed
only force an unwind if n>0 host frames are on a guest stack

awortman-fastly
authored and
iximeow
committed
test and support forced unwinding of guests stopped from stack overflows

awortman-fastly
authored and
iximeow
committed
improve forced unwinding in cases with termination and yield

acfoltzer
authored and
iximeow
committed
simplify unwinding implementation by using `Faulted` state

acfoltzer
authored and
iximeow
committed
add rudimentary backtrace support, still needs to be cleaned up

acfoltzer
authored and
iximeow
committed
address rebase conflicts in host tests
iximeow
committed
misimplemented some cranelift functions, fix that
iximeow
committed
adjust cfi expressions to use the correct parent_ctx offset
iximeow
committed
fix conflict from rebase
iximeow
committed
eh_frame writing needs to be upstream
iximeow
committed
forced unwinding of guests has had its assumptions challenged
iximeow
committed
roll back the last of lucetc eh_frame emission changes. this should all be upstream
iximeow
committed
rustfmt
iximeow
committed
tidy a little more
iximeow
committed

Commits on Jun 23, 2020

Commits on Jun 25, 2020

implement stack redzone for uffd
iximeow
committed