SectionRef::getName() returns std::error_code now.
Returning Expected<> instead has multiple benefits.
For example, it forces user to check the error returned.
Also Expected<> may keep a valuable string error message,
what is more useful than having a error code.
(Object\invalid.test was updated to show the new messages printed.)
This patch makes a change for all users to switch to Expected<> version.
Note: in a few places the error returned was ignored before my changes.
In such places I left them ignored. My intention was to convert the interface
used, and not to improve and/or the existent users in this patch.
(Though I think this is good idea for a follow-ups to revisit such places
and either remove consumeError calls or comment each of them to clarify why
it is OK to have them).
Differential revision: https://reviews.llvm.org/D66089
llvm-svn: 368812
- Add LC_SEGMENT_64 handling in getSectionsAndSymbols to be able to find the base segment address from 64-bit Mach-O binaries.
- Add "data in code" detection into the !symbolTableWorked case, extract it into a separate function.
- Fix uninitialized variable usage on BaseSegmentAddress (initialize to 0).
- Add test.
Differential Revision: https://reviews.llvm.org/D65491
llvm-svn: 367578
Summary:
Every time PrettyPrinter::printInst is called, stdout is flushed and it makes llvm-objdump slow. This patches adds a string
buffer to prevent stdout from being flushed.
Benchmark results (./llvm-objdump-master: without this patch, ./bin/llvm-objcopy: with this patch):
$ hyperfine --warmup 10 './llvm-objdump-master -d ./bin/llvm-objcopy' './bin/llvm-objdump -d ./bin/llvm-objcopy'
Benchmark #1: ./llvm-objdump-master -d ./bin/llvm-objcopy
Time (mean ± σ): 2.230 s ± 0.050 s [User: 1.533 s, System: 0.682 s]
Range (min … max): 2.115 s … 2.278 s 10 runs
Benchmark #2: ./bin/llvm-objdump -d ./bin/llvm-objcopy
Time (mean ± σ): 386.4 ms ± 13.0 ms [User: 376.6 ms, System: 6.1 ms]
Range (min … max): 366.1 ms … 407.0 ms 10 runs
Summary
'./bin/llvm-objdump -d ./bin/llvm-objcopy' ran
5.77 ± 0.23 times faster than './llvm-objdump-master -d ./bin/llvm-objcopy'
Reviewers: alexshap, Bigcheese, jhenderson, rupprecht, grimar, MaskRay
Reviewed By: jhenderson, MaskRay
Subscribers: dexonsmith, jhenderson, javed.absar, kristof.beyls, rupprecht, llvm-commits
Tags: #llvm
Differential Revision: https://reviews.llvm.org/D64969
llvm-svn: 366984
NB: the warning is about the input file itself regardless of the options used
such as `-r`, `-s` etc..
https://bugs.llvm.org/show_bug.cgi?id=41911
Reviewers: jhenderson, grimar, MaskRay, rupprecht
Reviewed by: MaskRay, jhenderson
Differential Revision: https://reviews.llvm.org/D64779
llvm-svn: 366923
Currently, the symbolizer lib can only symbolize a file on disk.
This patch teaches the symbolizer lib to symbolize objects.
llvm-objdump needs this to support archive disassembly with source info.
https://bugs.llvm.org/show_bug.cgi?id=41871
Reviewed by: jhenderson, grimar, MaskRay
Differential Revision: https://reviews.llvm.org/D63521
llvm-svn: 365376
-d code.
Summary:
Move it into `main` function so the checking is effective for all actions
user may do with llvm-objdump; notably, -r and -s in addition to existing -d.
Match GNU behavior.
Reviewers: jhenderson, grimar, MaskRay, rupprecht
Subscribers: llvm-commits
Tags: #llvm
Differential Revision: https://reviews.llvm.org/D63631
llvm-svn: 364118
Many LLVM-based tools already support response files (i.e. files
containing a list of options, specified with '@'). This change simply
updates the documentation and help text for some of these tools to
include it. I haven't attempted to fix all tools, just a selection that
I am interested in.
I've taken the opportunity to add some tests for --help behaviour, where
they were missing. We could expand these tests, but I don't think that's
within scope of this patch.
This fixes https://bugs.llvm.org/show_bug.cgi?id=42233 and
https://bugs.llvm.org/show_bug.cgi?id=42236.
Reviewed by: grimar, MaskRay, jkorous
Differential Revision: https://reviews.llvm.org/D63597
llvm-svn: 364036
The ARMDisassembler changes allow changing between ARM and Thumb mode
based on the MCSubtargetInfo, rather than the Target, which simplifies
the other changes a bit.
I'm not really happy with adding more target-specific logic to
tools/llvm-objdump/, but there isn't any easy way around it: the logic
in question specifically applies to disassembling an object file, and
that code simply isn't located in lib/Target, at least at the moment.
Differential Revision: https://reviews.llvm.org/D60927
llvm-svn: 363903
Summary:
Historically llvm-objdump prints the path to a dylib as well as the
dylib's compatibility version and current version number. This change
extends this information by adding the kind of dylib load: weak,
reexport, etc.
rdar://51383512
Reviewers: pete, lhames
Reviewed By: pete
Subscribers: rupprecht, llvm-commits
Tags: #llvm
Differential Revision: https://reviews.llvm.org/D62866
llvm-svn: 363746
Summary:
This fixes the bugzilla id,41862 to support dealing with checking
stop address against start address to support this not being a
proper object to check the disasembly against like gnu objdump
currently does.
Reviewers: jakehehrlich, rupprecht, echristo, jhenderson, grimar
Reviewed By: jhenderson
Subscribers: MaskRay, smeenai, rupprecht, llvm-commits
Tags: #llvm
Differential Revision: https://reviews.llvm.org/D61969
Patch by Nicholas Krause!
llvm-svn: 362847
Summary:
The tests for r362121 ran dsymutil against a test binary every time.
This caused problems on lld-x86_64-ubuntu-fast as dsymutil required
a lipo tool be available to process those binaries.
This change rewrites the new test cases in macho-disassemble-g-dsym
to use bespoke test binaries (exe and dwarf) simplifying the test's
runtime dependencies.
The changes to tools/llvm-objdump/MachODump.cpp are unchanged from
r362121
Reviewers: pete, lhames, JDevlieghere
Reviewed By: pete
Subscribers: smeenai, aprantl, rupprecht, llvm-commits
Tags: #llvm
Differential Revision: https://reviews.llvm.org/D62694
llvm-svn: 362141
Summary:
Commonly programmers use llvm-objdump to disassemble Mach-O target
binaries with Mach-O dSYMS. While llvm-objdump allows programmers to
disassemble Universal binaries, it previously did not recognize
Universal dSYM files. This change updates llvm-objdump to support
passing in Universal files via the -dsym option. Now, when
disassembling a Mach-O file either as a stand alone file or as an entry
in a Universal binariy, llvm-objdump will search through a Universal
dSYM for a Mach-O matching the architecture flag of the file being
disassembled.
Reviewers: pete, lhames
Reviewed By: pete
Subscribers: rupprecht, llvm-commits
Tags: #llvm
Differential Revision: https://reviews.llvm.org/D62642
llvm-svn: 362121
For clients iterating the symbol table, none expects to handle index 0
(STN_UNDEF). Skip it to improve consistency with other binary formats.
Clients that need STN_UNDEF (e.g. lld) can use
getSectionContentsAsArray(). A test will be added in D62148.
Reviewed By: mtrent
Differential Revision: https://reviews.llvm.org/D62296
llvm-svn: 361506
This fixes PR41886: llvm-objdump -d -r -j .text doesn't show inline relocations of .text
While here, switch to stable_sort() because we don't want to change the order of relocations applied to the same location. gABI says consecutive relocation records are composed together and their order matters. In practise it is difficult to see relocations applied to the same location not consecutive, we just have to keep the relative order of relocations with the same offset.
Reviewed By: grimar
Differential Revision: https://reviews.llvm.org/D62253
llvm-svn: 361395
r360876 didn't fix 2 call sites in clang.
Expected<ArrayRef<uint8_t>> may be better but use Expected<StringRef> for now.
Follow-up of D61781.
llvm-svn: 360892
It broke the Clang build, see llvm-commits thread.
> Expected<ArrayRef<uint8_t>> may be better but use Expected<StringRef> for now.
>
> Follow-up of D61781.
llvm-svn: 360878
This adds support for the arm64_32 watchOS ABI to LLVM's low level tools,
teaching them about the specific MachO choices and constants needed to
disassemble things.
llvm-svn: 360663
Change
std::error_code getSectionContents(DataRefImpl, StringRef &) const;
to
Expected<ArrayRef<uint8_t>> getSectionContents(DataRefImpl) const;
Many object formats use ArrayRef<uint8_t> as the underlying type, which
is generally better than StringRef to represent binary data, so change
the type to decrease the number of type conversions.
Reviewed By: ruiu, sbc100
Differential Revision: https://reviews.llvm.org/D61781
llvm-svn: 360648
Add support for ".hidden" ".internal" ".protected" and " 0x%02x" for
other st_other bits used by some architectures.
Reviewed By: sfertile
Differential Revision: https://reviews.llvm.org/D61718
llvm-svn: 360439
This fixes the https://bugs.llvm.org/show_bug.cgi?id=41355.
Previously with -r we printed relocation section name instead of the target section name.
It was like this: "RELOCATION RECORDS FOR [.rel.text]"
Now it is: "RELOCATION RECORDS FOR [.text]"
Also when relocation target section has more than one relocation section,
we did not combine the output. Now we do.
Differential revision: https://reviews.llvm.org/D61312
llvm-svn: 360143
Summary:
It currently receives an output parameter and returns
std::error_code. Expected<StringRef> fits for this purpose perfectly.
Differential Revision: https://reviews.llvm.org/D61421
llvm-svn: 359774
This improves readability and the behavior is consistent with GNU objdump.
The new test test/tools/llvm-objdump/X86/disassemble-section-name.s
checks we print newlines before and after "Disassembly of section ...:"
Differential Revision: https://reviews.llvm.org/D61127
llvm-svn: 359668
George Rimar