| Commit message (Collapse) | Author | Age | Files | Lines |
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Instead of GetProgramHeaderCount+GetProgramHeaderByIndex, expose an
ArrayRef of all program headers, to enable range-based iteration.
Instead of GetSegmentDataByIndex, expose GetSegmentData, taking a
program header (reference).
This makes the code simpler by enabling range-based loops and also
allowed to remove some null checks, as it became locally obvious that
some pointers can never be null.
llvm-svn: 348928
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Test cases were updated to not use the local compilation dir which
is different between development pc and build bots.
Original commit message:
[LLDB] - Support the single file split DWARF.
DWARF5 spec describes a single file split dwarf case
(when .dwo sections are in the .o files).
Problem is that LLDB does not work correctly in that case.
The issue is that, for example, both .debug_info and .debug_info.dwo
has the same type: eSectionTypeDWARFDebugInfo. And when code searches
section by type it might find the regular debug section
and not the .dwo one.
The patch fixes that. With it, LLDB is able to work with
output compiled with -gsplit-dwarf=single flag correctly.
Differential revision: https://reviews.llvm.org/D52403
llvm-svn: 346855
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It broke BB:
http://green.lab.llvm.org/green/job/lldb-cmake/12522/testReport/junit/LLDB/Breakpoint/single_file_split_dwarf_test/
llvm-svn: 346853
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DWARF5 spec describes a single file split dwarf case
(when .dwo sections are in the .o files).
Problem is that LLDB does not work correctly in that case.
The issue is that, for example, both .debug_info and .debug_info.dwo
has the same type: eSectionTypeDWARFDebugInfo. And when code searches
section by type it might find the regular debug section
and not the .dwo one.
The patch fixes that. With it, LLDB is able to work with
output compiled with -gsplit-dwarf=single flag correctly.
Differential revision: https://reviews.llvm.org/D52296
llvm-svn: 346848
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This patch removes the comments grouping header includes. They were
added after running IWYU over the LLDB codebase. However they add little
value, are often outdates and burdensome to maintain.
llvm-svn: 346626
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llvm-svn: 346244
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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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It broke MacOS buildbots.
llvm-svn: 346045
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Summary:
This patch adds possibility of searching a public symbol with name and type in a
symbol file. It is helpful when working with PE, because PE's symtabs contain
only imported / exported symbols only. Such a search is required for e.g.
evaluation of an expression that calls some function of the debuggee.
Reviewers: zturner, asmith, labath, clayborg, espindola
Reviewed By: clayborg
Subscribers: emaste, arichardson, aleksandr.urakov, jingham, lldb-commits, stella.stamenova
Tags: #lldb
Differential Revision: https://reviews.llvm.org/D53368
llvm-svn: 345957
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This patch removes the logic for resolving paths out of FileSpec and
updates call sites to rely on the FileSystem class instead.
Differential revision: https://reviews.llvm.org/D53915
llvm-svn: 345890
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This patch removes the GetByteSize method from FileSpec and updates its
uses with calls to the FileSystem.
Differential revision: https://reviews.llvm.org/D53788
llvm-svn: 345812
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This implements the support for .debug_loclists section, which is
DWARF 5 version of .debug_loc.
Currently, clang is able to emit it with the use of D53365.
Differential revision: https://reviews.llvm.org/D53436
llvm-svn: 345016
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This adds a basic support of the .debug_rnglists section.
Only the DW_RLE_start_length and DW_RLE_end_of_list entries are supported.
Differential revision: https://reviews.llvm.org/D52981
llvm-svn: 344119
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This patch improves the support of DWARF5.
Particularly the reporting of source code locations.
Differential revision: https://reviews.llvm.org/D51935
llvm-svn: 342153
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Summary:
.rela.debug_info relocations are being done via
ObjectFileELF::ApplyRelocations for aarch64. Currently, the switch case
that iterates over the relocation type is only implemented for a few
different types and `assert(false)`es over the rest.
Implement the relocation for R_AARCH64_ABS32 in ApplyRelocations
Reviewers: sas, xiaobai, javed.absar, espindola
Reviewed By: sas
Subscribers: emaste, arichardson, kristof.beyls
Differential Revision: https://reviews.llvm.org/D50369
Change by Nathan Lanza <lanza@fb.com>
llvm-svn: 339974
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This change improves the logging for the lldb.module category to note a few interesting cases:
1. Local object file found, but specs not matching
2. Local object file not found, using a placeholder module
The handling and logging for the cases wehre we fail to load compressed dwarf
symbols is also improved.
Differential Revision: https://reviews.llvm.org/D50274
llvm-svn: 339161
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This reverts commit f055ce7eb893cd0d17ebcfd4125018f46f983aff.
llvm-svn: 339071
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Summary:
.rela.debug_info relocations are being done via
ObjectFileELF::ApplyRelocations for aarch64. Currently, the switch case
that iterates over the relocation type is only implemented for a few
different types and `assert(false)`es over the rest.
Implement the relocation for R_AARCH64_ABS32 in ApplyRelocations
Reviewers: sas, xiaobai, peter.smith, clayborg, javed.absar, espindola
Differential Revision: https://reviews.llvm.org/D49407
Change by Nathan Lanza <lanza@fb.com>
llvm-svn: 339068
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Summary:
The data structure is optimized for the case where the UUID size is <=
20 bytes (standard length emitted by the GNU linkers), but larger sizes
are also possible.
I've modified the string conversion function to support the new sizes as
well. For standard UUIDs it maintains the traditional formatting
(4-2-2-2-6). If a UUID is shorter, we just cut this sequence short, and
for longer UUIDs it will just repeat the last 6-byte block as long as
necessary.
I've also modified ObjectFileELF to take advantage of the new UUIDs and
avoid manually padding the UUID to 16 bytes. While there, I also made
sure the computed UUID does not depend on host endianness.
Reviewers: clayborg, lemo, sas, davide, espindola
Subscribers: emaste, arichardson, lldb-commits
Differential Revision: https://reviews.llvm.org/D48633
llvm-svn: 335963
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to manage it.
This change allows to make AddressClass strongly typed enum and not to have issues with old versions of SWIG that don't support enum classes.
llvm-svn: 335710
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Summary:
During the previous attempt to generalize the UUID class, it was
suggested that we represent invalid UUIDs as length zero (previously, we
used an all-zero UUID for that). This meant that some valid build-ids
could not be represented (it's possible however unlikely that a checksum of
some file would be zero) and complicated adding support for variable
length build-ids (should a 16-byte empty UUID compare equal to a 20-byte
empty UUID?).
This patch resolves these issues by introducing a canonical
representation for an invalid UUID. The slight complication here is that
some clients (MachO) actually use the all-zero notation to mean "no UUID
has been set". To keep this use case working (while making it very
explicit about which construction semantices are wanted), replaced the
UUID constructors and the SetBytes functions with named factory methods.
- "fromData" creates a UUID from the given data, and it treats all bytes
equally.
- "fromOptionalData" first checks the data contents - if all bytes are
zero, it treats this as an invalid/empty UUID.
Reviewers: clayborg, sas, lemo, davide, espindola
Subscribers: emaste, lldb-commits, arichardson
Differential Revision: https://reviews.llvm.org/D48479
llvm-svn: 335612
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If we have a function with signature f(addr_t, AddressClass), it is easy to muddle up the order of arguments without any warnings from compiler. 'enum class' prevents passing integer in place of AddressClass and vice versa.
llvm-svn: 335599
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With the recent changes in FileSpec to use LLVM's path style, it is
possible to delegate a bunch of common path operations to LLVM's path
helpers. This means we only have to maintain a single implementation and
at the same time can benefit from the efforts made by the rest of the
LLVM community.
This is part one of a set of patches. There was no obvious way to split
this so I just worked from top to bottom.
Differential revision: https://reviews.llvm.org/D48084
llvm-svn: 334615
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llvm-svn: 333743
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This reverts commit r332162 as it breaks the bots (Ubuntu 14.04)
with the following message:
Build Command Output:
objcopy: option '--compress-debug-sections' doesn't allow an argument
llvm-svn: 332165
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Patch by Erik Welander!
Differential Revision: https://reviews.llvm.org/D45628
llvm-svn: 332162
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In an effort to make the .debug_types patch smaller, breaking out the part that reads the .debug_types from object files into a separate patch
Differential Revision: https://reviews.llvm.org/D46529
llvm-svn: 331777
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This brings the LLDB configuration closer to LLVM's and removes visual
clutter in the source code by removing the @brief commands from
comments.
This patch also reflows the paragraphs in all doxygen comments.
See also https://reviews.llvm.org/D46290.
Differential Revision: https://reviews.llvm.org/D46321
llvm-svn: 331373
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This is intended as a clean up after the big clang-format commit
(r280751), which unfortunately resulted in many of the comment
paragraphs in LLDB being very hard to read.
FYI, the script I used was:
import textwrap
import commands
import os
import sys
import re
tmp = "%s.tmp"%sys.argv[1]
out = open(tmp, "w+")
with open(sys.argv[1], "r") as f:
header = ""
text = ""
comment = re.compile(r'^( *//) ([^ ].*)$')
special = re.compile(r'^((([A-Z]+[: ])|([0-9]+ )).*)|(.*;)$')
for line in f:
match = comment.match(line)
if match and not special.match(match.group(2)):
# skip intentionally short comments.
if not text and len(match.group(2)) < 40:
out.write(line)
continue
if text:
text += " " + match.group(2)
else:
header = match.group(1)
text = match.group(2)
continue
if text:
filled = textwrap.wrap(text, width=(78-len(header)),
break_long_words=False)
for l in filled:
out.write(header+" "+l+'\n')
text = ""
out.write(line)
os.rename(tmp, sys.argv[1])
Differential Revision: https://reviews.llvm.org/D46144
llvm-svn: 331197
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ObjectFileELF assumes that code section has ".text" name. There is an
exception for kalimba toolchain that can use arbitrary names, but other
toolchains also could use arbitrary names for code sections. For
example, corert uses separate section for compiled managed code. As lldb
doesn't recognize such section it leads to problem with breakpoints on
arm, because debugger cannot determine instruction set (arm/thumb) and
uses incorrect breakpoint opcode that breaks program execution.
This change allows debugger to correctly handle such code sections. We
assume that section is a code section if it has SHF_EXECINSTR flag set
and has SHT_PROGBITS type.
Patch by Konstantin Baladurin <k.baladurin@partner.samsung.com>.
Differential Revision: https://reviews.llvm.org/D44998
llvm-svn: 331173
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Differential revision: https://reviews.llvm.org/D40468
llvm-svn: 331148
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regions
The difference between this and the previous patch is that now we use
ELF physical addresses only for loading objects into the target (and the
rest of the module load address logic still uses virtual addresses).
Summary:
When writing an object file over gdb-remote, use the vFlashErase, vFlashWrite, and vFlashDone commands if the write address is in a flash memory region. A bare metal target may have this kind of setup.
- Update ObjectFileELF to set load addresses using physical addresses. A typical case may be a data section with a physical address in ROM and a virtual address in RAM, which should be loaded to the ROM address.
- Add support for querying the target's qXfer:memory-map, which contains information about flash memory regions, leveraging MemoryRegionInfo data structures with minor modifications
- Update ProcessGDBRemote to use vFlash commands in DoWriteMemory when the target address is in a flash region
Original discussion at http://lists.llvm.org/pipermail/lldb-dev/2018-January/013093.html
Reviewers: clayborg, labath
Reviewed By: labath
Subscribers: llvm-commits, arichardson, emaste, mgorny, lldb-commits
Differential Revision: https://reviews.llvm.org/D42145
Patch by Owen Shaw <llvm@owenpshaw.net>.
llvm-svn: 327970
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Summary:
Besides being superfluous, this double merging was actually wrong and
causing some sections to be added twice. The reason for that was that
the code assumes section IDs are unique in the section list, but this is
only true if all sections in the list come from the same object file.
Reviewers: fjricci, jankratochvil
Subscribers: emaste, lldb-commits, arichardson
Differential Revision: https://reviews.llvm.org/D44157
llvm-svn: 327123
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regions"
This reverts commit r326261 as it introduces inconsistencies in the
handling of load addresses for ObjectFileELF -- some parts of the class
use physical addresses, and some use virtual. This has manifested itself
as us not being able to set the load address of the vdso "module" on
android.
llvm-svn: 326367
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Summary:
When writing an object file over gdb-remote, use the vFlashErase, vFlashWrite, and vFlashDone commands if the write address is in a flash memory region. A bare metal target may have this kind of setup.
- Update ObjectFileELF to set load addresses using physical addresses. A typical case may be a data section with a physical address in ROM and a virtual address in RAM, which should be loaded to the ROM address.
- Add support for querying the target's qXfer:memory-map, which contains information about flash memory regions, leveraging MemoryRegionInfo data structures with minor modifications
- Update ProcessGDBRemote to use vFlash commands in DoWriteMemory when the target address is in a flash region
Original discussion at http://lists.llvm.org/pipermail/lldb-dev/2018-January/013093.html
Reviewers: clayborg, labath
Reviewed By: labath
Subscribers: arichardson, emaste, mgorny, lldb-commits
Differential Revision: https://reviews.llvm.org/D42145
Patch by Owen Shaw <llvm@owenpshaw.net>
llvm-svn: 326261
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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:
The difference between this and regular LLDB_LOG is that this one clears
the error object unconditionally. This was inspired by the
ObjectFileELF bug (r322664), where the error object was being cleared
only if logging was enabled.
Reviewers: davide, zturner, jingham, clayborg
Subscribers: lldb-commits, emaste
Differential Revision: https://reviews.llvm.org/D42182
llvm-svn: 323753
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In D40616 I (mistakenly) assumed that logging an llvm::Error would clear
it. This of course is only true if logging is actually enabled.
This fixes the assertion by manually clearing the error, but it raises
the point of whether we need a special error-clearing logging primitive.
llvm-svn: 322664
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Summary:
We sometimes need to write to the object file we've mapped into memory,
generally to apply relocations to debug info sections. We've had that
ability before, but with the introduction of DataBufferLLVM, we have
lost it, as the underlying llvm class (MemoryBuffer) only supports
read-only mappings.
This switches DataBufferLLVM to use the new llvm::WritableMemoryBuffer
class as a back-end, as this one guarantees to return a writable buffer.
This removes the need for the "Private" flag to the DataBufferLLVM
creation functions, as it was really used to mean "writable". The LLVM
function also does not have the NullTerminate flag, so I've modified our
clients to not require this feature and removed that flag as well.
Reviewers: zturner, clayborg, jingham
Subscribers: emaste, aprantl, arichardson, krytarowski, lldb-commits
Differential Revision: https://reviews.llvm.org/D40079
llvm-svn: 321255
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llvm-svn: 320967
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cast to size_t to avoid narrowing error.
llvm-svn: 320816
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Summary:
We use the llvm decompressor to decompress SHF_COMPRESSED sections. This enables
us to read data from debug info sections, which are sometimes compressed,
particuarly in the split-dwarf case. This functionality is only available if
llvm is compiled with zlib support.
Reviewers: clayborg, zturner
Subscribers: emaste, mgorny, aprantl, lldb-commits
Differential Revision: https://reviews.llvm.org/D40616
llvm-svn: 320813
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Differential Revision: https://reviews.llvm.org/D40745
llvm-svn: 319599
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The rationale here is that ArchSpec is used throughout the codebase,
including in places which should not depend on the rest of the code in
the Core module.
This commit touches many files, but most of it is just renaming of
#include lines. In a couple of cases, I removed the #include ArchSpec
line altogether, as the file was not using it. In one or two places,
this necessitated adding other #includes like lldb-private-defines.h.
llvm-svn: 318048
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FreeBSD kernel modules are actually relocatable (.o) ELF files and this
previously caused some issues for LLDB. This change addresses these when
using lldb to symbolicate FreeBSD kernel backtraces.
The major problems:
- Relocations were not being applied to the DWARF debug info despite
there being code to do this. Several issues prevented it from working:
- Relocations are computed at the same time as the symbol table, but
in the case of split debug files, symbol table parsing always
redirects to the primary object file, meaning that relocations would
never be applied in the debug file.
- There's actually no guarantee that the symbol table has been parsed
yet when trying to parse debug information.
- When actually applying relocations, it will segfault because the
object files are not mapped with MAP_PRIVATE and PROT_WRITE.
- LLDB returned invalid results when performing ordinary address-to-
symbol resolution. It turned out that the addresses specified in the
section headers were all 0, so LLDB believed all the sections had
overlapping "file addresses" and would sometimes return a symbol from
the wrong section.
Patch by Brian Koropoff
Differential Revision: https://reviews.llvm.org/D38142
llvm-svn: 314672
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std::unique_ptr is pretty much a drop-in replacement here. Also remove nullptr
checks that are doing nothing.
llvm-svn: 313265
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Summary:
The DWP (DWARF package) format is used to pack multiple dwo files
generated by split-dwarf into a single ELF file to make distributing
them easier. It is part of the DWARFv5 spec and can be generated by
dwp or llvm-dwp from a set of dwo files.
Caviats:
* Only the new version of the dwp format is supported (v2 in GNU
numbering schema and v5 in the DWARF spec). The old version (v1) is
already deprecated but binutils 2.24 still generates that one.
* Combining DWP files with module debugging is not yet supported.
Subscribers: emaste, mgorny, aprantl
Differential Revision: https://reviews.llvm.org/D36062
llvm-svn: 311775
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ELF section to LLDB_INVALID_ADDRESS if SHF_ALLOC is not set.
Reviewers: labath, clayborg
Subscribers: jaydeep, bhushan, lldb-commits
Differential Revision: https://reviews.llvm.org/D35784
llvm-svn: 310855
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Summary:
The classes have no dependencies, and they are used both by lldb and
lldb-server, so it makes sense for them to live in the lowest layers.
Reviewers: zturner, jingham
Subscribers: emaste, mgorny, lldb-commits
Differential Revision: https://reviews.llvm.org/D34746
llvm-svn: 306682
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Summary: Reported by coverity, I don't know how to provide a test.
Reviewers: zturner
Subscribers: lldb-commits, emaste
Differential Revision: https://reviews.llvm.org/D34550
llvm-svn: 306134
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