Commit Graph

9 Commits

Author SHA1 Message Date
Pavel Labath b53203ec1f A more robust way of testing debug_line parser near the end of module
Summary:
While removing -z separate-code makes lld produce place the code at the
end of a segment right now, it's possible that future changes to the
linker will change that, thereby removing the coverage for the changes
in r367983. This patch adds a linker script to one of the line table
tests, which ensures that the code (and its line table) will be placed
at the very end of a module.

Reviewers: MaskRay

Subscribers: lldb-commits

Differential Revision: https://reviews.llvm.org/D65789

llvm-svn: 368154
2019-08-07 11:33:56 +00:00
Pavel Labath a3bdcdf714 Fix line table resolution near the end of a section
Summary:
lld r367537 changed the way the linker organizes sections and segments.
This exposed an lldb bug and caused some tests to fail.

In all of the failing tests the root cause was the same -- when we were
trying to resolve the last address in the line_table section, we failed
because it pointed past the end of the section.

This patch changes the line table address resolution code to back up the
address by one for end-of-sequence entries. This ensures the address
still points inside a section/module even if the line table sequence
ends at the very end of a section.

It also reverts the linker flags which were added to the failing tests
to restore previous behavior.

Reviewers: clayborg, jingham

Subscribers: mgorny, MaskRay, lldb-commits

Differential Revision: https://reviews.llvm.org/D65647

llvm-svn: 367983
2019-08-06 06:52:05 +00:00
Fangrui Song caf03a41f3 [lit] Use ld.lld -z separate-code to work around a debug_line parsing bug
The issue was exposed by D64903/r367537.
http://lab.llvm.org:8011/builders/lldb-x64-windows-ninja/builds/7321/

In these tests, .debug_str immediately follows .text.
The last section of last RX PT_LOAD was originally padded with trap
instructions and .debug_str started at a new page (actually
common-page-size). Now, .debug_str immediately follows .test.
Add -z separate-code to use the old layout.

llvm-svn: 367549
2019-08-01 12:34:43 +00:00
Pavel Labath c573032ded Add "REQUIRES: x86" to DWARF assembly tests
These tests don't require an x86 host, but they do require that we build
the x86 llvm target.

llvm-svn: 362948
2019-06-10 15:08:00 +00:00
Michal Gorny 377d9dc872 [lldb] [test] Adjust XFAIL list to match buildbot results
Adjust the XFAIL-ing tests to match consistent results from buildbot.
I'm going to work on differences between them and my local results
following this.

llvm-svn: 355774
2019-03-09 12:47:38 +00:00
Michal Gorny de11105d2e [lldb] [test] Mark failing tests XFAIL on NetBSD
Add a convenience 'expectedFailureNetBSD' decorator and mark all tests
currently failing on NetBSD with it.  Also skip a few tests that hang
the test suite.  This should establish a baseline for the test suite
and get us closer to enabling tests on buildbot.  This will help us
catch regressions while we still have a lot of work to do to get tests
working.

It seems that there are also some flaky tests.  I am going to address
them later on.

Differential Revision: https://reviews.llvm.org/D58527

llvm-svn: 355320
2019-03-04 16:54:06 +00:00
Pavel Labath bdbc14dc01 Recommit "Add a verbose mode to "image dump line-table" and use it to write a .debug_line test"
This reapplies r350802, which was reverted because of issues with
parsing posix-style paths on windows hosts (and vice-versa). These have
since been fixed in r351328, and lldb should now recognise the path
style used in a dwarf compile unit correctly.

llvm-svn: 351435
2019-01-17 13:11:04 +00:00
Pavel Labath 59f600f2f6 Revert "Add a verbose mode to "image dump line-table" and use it to write a .debug_line test"
This reverts commit r350802 because the test fails on windows. This
happens because we treat the paths as windows paths even though they
have linux path separators in the asm file. That results in wrong paths
being computed (\tmp\tmp\a.c instead of /tmp/a.c).

Reverting until I can figure out what to do with this.

llvm-svn: 350810
2019-01-10 10:23:27 +00:00
Pavel Labath 1c69ab2860 Add a verbose mode to "image dump line-table" and use it to write a .debug_line test
Summary:
The motivation for this is being able to write tests for the upcoming
breakpad line table parser, but this could be useful for testing the
low-level workings of any line table format. Or simply for viewing the
line table information with more detail (the brief format doesn't
include any of the flags for end_of_prologue and similar).

I've also removed the load_addresses argument from the
DumpCompileUnitLineTable function, as it wasn't being used anywhere.

Reviewers: clayborg, zturner

Subscribers: JDevlieghere, lldb-commits

Differential Revision: https://reviews.llvm.org/D56315

llvm-svn: 350802
2019-01-10 09:16:00 +00:00