The relocated addresses are populated during BSS::Initialize() for
natively loaded ELF snapshots, and during the non-native loader when it
is used. Putting this information in the BSS segment avoids having to
change the embedder interface, since we only need this information for
AOT snapshots. This also avoids depending on our ELF snapshot layout
to reverse-engineer the DSO base for ELF-compiled snapshots.
We now always print the DSO base for both the VM and isolate in
non-symbolic stack traces, not just for ELF-compiled snapshots. However,
we still only print the relocated addresses in individual stack frames
if we're guaranteed they match those in separately saved debugging
information.
Bug: https://github.com/dart-lang/sdk/issues/41880
Cq-Include-Trybots: luci.dart.try:vm-kernel-precomp-linux-release-x64-try,vm-kernel-precomp-linux-product-x64-try,vm-kernel-precomp-linux-debug-x64-try,vm-kernel-precomp-win-release-x64-try,vm-kernel-precomp-mac-release-simarm64-try
Change-Id: I4837262f78e6e73a32eb7e24ef7a68ccb8ec2669
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/148441
Commit-Queue: Tess Strickland <sstrickl@google.com>
Reviewed-by: Martin Kustermann <kustermann@google.com>
If lookup succeeds, then the DWARF stack frame uses the symbol
name and offset instead of the dynamic library name. The
native_stack_traces package (once updated) can translate these
stack frames into symbolic stack frames even if given a partial
stack trace without the header.
Also, consistently use uword instead of a mix of uintptr_t and uword.
Change-Id: Ida9ba4726a306fb77b141cb9c6ad635a12a320ec
Cq-Include-Trybots: luci.dart.try:vm-kernel-precomp-linux-release-x64-try,vm-kernel-precomp-linux-release-simarm_x64-try,vm-kernel-precomp-mac-release-simarm64-try,vm-kernel-precomp-win-release-x64-try
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/140282
Commit-Queue: Teagan Strickland <sstrickl@google.com>
Reviewed-by: Ryan Macnak <rmacnak@google.com>
Reviewed-by: Martin Kustermann <kustermann@google.com>
Gardening.
This reverts commit ca20aab384.
That commit causes generation of incorrect register names on
vm-noopt-simarm64-mac-be, and it seems to cause a disk full
error later on (making the bot purple).
Review-Url: https://codereview.chromium.org/2754233002 .
Emit CFI information to teach gdb how to unwind Dart frames. Fixes unwinding for Mac x64 and Linux x64/ARM/ARM64. Unwinding already worked for iOS ARM64. Fixes unwinding on Android 6+ ARM.
Emit DWARF information about function inlining and line number mappings. Works with gdb, addr2line and llvm-symbolizer.
With --dwarf-stack-traces, also remove CodeSourceMaps from snapshots and change stack traces to a non-compliant form resembling Android's debuggerd output, which can be passed to ndk-stack.
Issue #28785R=fschneider@google.com, johnmccutchan@google.com, vegorov@google.com
Review-Url: https://codereview.chromium.org/2723213002 .
i.e. #ifndef VM_WHATEVER -> #ifndef RUNTIME_VM_WHATEVER
This lets us remove a hack from the PRESUBMIT.py script that existed
for reasons that are no longer valid, and sets us up to add some
presubmit checks for the GN build.
R=asiva@google.com, rmacnak@google.com
Review URL: https://codereview.chromium.org/2450713004 .
Tess Strickland