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Summary:
Recently, yaml2obj has been turned into a library. This means we can use
it from our unit tests directly, instead of shelling out to an external
process. This patch does just that.
Reviewers: JDevlieghere, aadsm, espindola, jdoerfert
Subscribers: emaste, mgorny, arichardson, MaskRay, jhenderson, abrachet, lldb-commits
Differential Revision: https://reviews.llvm.org/D65949
llvm-svn: 369374
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It is much easier to test this functionality via lldb-test.
llvm-svn: 368289
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https://reviews.llvm.org/D60122 (r357595) changed the
symbols description format in yaml2obj.
This change updates the LLDB tests.
llvm-svn: 357600
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Summary:
pcm files can end up being processed by lldb with relocations to be
made for the .debug_info section. When a R_AARCH64_ABS64 relocation
was required lldb would hit an `assert(false)` and die.
Add R_AARCH64_ABS64 relocations to the S+A 64 bit width code path. Add
a test for R_AARCH64_ABS64 and R_AARCH64_ABS32 .rela.debug_info
relocations in a pcm file.
Reviewers: sas, xiaobai, davide, javed.absar, espindola
Reviewed By: davide
Subscribers: labath, zturner, emaste, mgorny, arichardson, kristof.beyls
Differential Revision: https://reviews.llvm.org/D51566
llvm-svn: 346171
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GetModuleSpecifications_EarlySectionHeaders was generated
Davide pointed out this would be useful if the file ever needs to be
regenerated (and I certainly agree).
I also replace the test binary with a slightly smaller one -- I intended
to do this in the original commit, but I forgot to add it to the patch
as I was juggling several things at the same time.
llvm-svn: 324256
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ObjectFileELF::GetModuleSpecifications contained a lot of tip-toing code
which was trying to avoid loading the full object file into memory. It
did this by trying to load data only up to the offset if was accessing.
However, in practice this was useless, as 99% of object files we
encounter have section headers at the end, so we would load the whole
file as soon as we start parsing the section headers.
In fact, this would break as soon as we encounter a file which does
*not* have section headers at the end (yaml2obj produces these), as the
access to .strtab (which we need to get the section names) was not
guarded by this offset check.
As this strategy was completely ineffective anyway, I do not attempt to
proliferate it further by guarding the .strtab accesses. Instead I just
lead the full file as soon as we are reasonably sure that we are indeed
processing an elf file.
If we really care about the load size here, we would need to reimplement
this to just load the bits of the object file we need, instead of
loading everything from the start of the object file to the given
offset. However, given that the OS will do this for us for free when
using mmap, I think think this is really necessary.
For testing this I check a (tiny) SO file instead of yaml2obj-ing it
because the fact that they come out first is an implementation detail of
yaml2obj that can change in the future.
llvm-svn: 324254
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Summary:
If we have symbol information in a separate file, we need to be very
careful about presenting a unified section view of module to the rest of
the debugger. ObjectFileELF had code to handle that, but it was being
overly cautious -- the section->GetFileSize()!=0 meant that the
unification would fail for sections which do not occupy any space in the
object file (e.g., .bss). In my case, that manifested itself as not
being able to display the values of .bss variables properly as the
section associated with the variable did not have it's load address set
(because it was not present in the unified section list).
I test this by making sure the unified section list and the variables
refer to the same section.
Reviewers: eugene, zturner
Subscribers: tberghammer, lldb-commits, mgorny
Differential Revision: https://reviews.llvm.org/D32434
llvm-svn: 301917
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