13751 Commits

Author SHA1 Message Date
Med Ismail Bennani
868b45b5b3 [lldb/interpreter] Add REPL-specific init file
This patch adds the infrastructure to have language specific REPL init
files. It's the foundation work to a following patch that will introduce
Swift REPL init file.

When lldb is launched with the `--repl` option, it will look for a REPL
init file in the home directory and source it. This overrides the
default `~/.lldbinit`, which content might make the REPL behave
unexpectedly. If the REPL init file doesn't exists, lldb will fall back
to the default init file.

rdar://65836048

Differential Revision: https://reviews.llvm.org/D86242

Signed-off-by: Med Ismail Bennani <medismail.bennani@gmail.com>
2020-08-20 00:36:32 +02:00
Pavel Labath
d7363397c6 [lldb] Add typedefs to the DeclContext they are created in
TypeSystemClang::CreateTypedef was creating a typedef in the right
DeclContext, but it was not actually adding it as a child of the
context. The resulting inconsistent state meant that we would be unable
to reference the typedef from an expression directly, but we could use
them if they end up being pulled in by some previous subexpression
(because the ASTImporter will set up the correct links in the expression
ast).

This patch adds the typedef to the decl context it is created in.

Differential Revision: https://reviews.llvm.org/D86140
2020-08-19 14:57:43 +02:00
Muhammad Omair Javaid
567ba6c468 [LLDB] Add ptrace register access for AArch64 SVE registers
This patch adds NativeRegisterContext_arm64 ptrace routines to access
AArch64 SVE register set. This patch also adds a test-case to test
AArch64 SVE register access and dynamic size configuration capability.

Reviewed By: labath

Differential Revision: https://reviews.llvm.org/D79699
2020-08-19 15:11:01 +05:00
Muhammad Omair Javaid
af4f40c376 [LLDB] NativeThreadLinux invalidate register cache on stop
In our discussion D79699 SVE ptrace register access support we decide to
invalidate register context cached data on every stop instead of doing
at before Step/Resume.

InvalidateAllRegisters was added to facilitate flushing of SVE register
context configuration and cached register values. It now makes more
sense to move invalidation after every stop where we initiate SVE
configuration update if needed by calling ConfigureRegisterContext.

Reviewed By: labath

Differential Revision: https://reviews.llvm.org/D84501
2020-08-19 12:30:38 +05:00
Muhammad Omair Javaid
090306fc80 Convert SVE macros into c++ constants and inlines
This patch updates LLDB's in house version of SVE ptrace/sig macros by
converting them into constants and inlines. They are housed under sve
namespace and are used by process elf-core for reading SVE register data.

Reviewed By: labath

Differential Revision: https://reviews.llvm.org/D85641
2020-08-19 12:28:16 +05:00
Greg Clayton
08748d15b8 Fix a check that was attempting to see if an object file was in memory.
Checking if an object file is in memory should use the ObjectFile::IsInMemory(), not test ObjectFile::BaseAddress(). ObjectFile::BaseAddress() is designed to be overridden by all classes and is for mach-o, ELF and COFF plug-ins. They find the header base adddress and return that as a section offset address. The default implementation of ObjectFile::BaseAddress() does try and make an Address() from the ObjectFile::m_memory_addr, but I switched it to a correct function call.

Differential Revision: https://reviews.llvm.org/D86122
2020-08-18 13:24:22 -07:00
David Blaikie
f7a49d2aa6 [WIP][DebugInfo] Lazily parse debug_loclist offsets
Parsing DWARFv5 debug_loclist offsets when a CU is parsed is weighing
down memory usage of symbolizers that don't need to parse this data at
all. There's not much benefit to caching these anyway - since they are
O(1) lookup and reading once you know where the offset list starts (and
can do bounds checking with the offset list size too).

In general, I think it might be time to start paying down some of the
technical debt of loc/loclist/range/rnglist parsing to try to unify it a
bit more.

eg:

* Currently DWARFUnit has: RangeSection, RangeSectionBase, LocSection,
  LocSectionBase, LocTable, RngListTable, LoclistTableHeader (be nice if
  these were all wrapped up in two variables - one for loclists, one for
  rnglists)

* rnglists and loclists are handled differently (see:
  LoclistTableHeader, but no RnglistTableHeader)

* maybe all these types could be less stateful - lazily parse what they
  need to, even reparsing rather than caching because it doesn't seem
  too expensive, for instance. (though admittedly so long as it's
  constantcost/overead per compilatiton that's probably adequate)

* Maybe implementing and using a DWARFDataExtractor that can be
  sub-ranged (so we could slice it up to just the single contribution) -
  though maybe that's not so useful because loc/ranges need to refer to
  it by absolute, not contribution-relative mechanisms

Differential Revision: https://reviews.llvm.org/D86110
2020-08-18 10:49:39 -07:00
Luboš Luňák
dcd4589a0d [lldb][gui] use left/right in the source view to scroll
I intentionally decided not to reset the column automatically
anywhere, because I don't know where and if at all that should happen.
There should be always an indication of being scrolled (too much)
to the right, so I'll leave this to whoever has an opinion.

Differential Revision: https://reviews.llvm.org/D85290
2020-08-18 13:25:01 +02:00
Harmen Stoppels
a52173a3e5 Use find_library for ncurses
Currently it is hard to avoid having LLVM link to the system install of
ncurses, since it uses check_library_exists to find e.g. libtinfo and
not find_library or find_package.

With this change the ncurses lib is found with find_library, which also
considers CMAKE_PREFIX_PATH. This solves an issue for the spack package
manager, where we want to use the zlib installed by spack, and spack
provides the CMAKE_PREFIX_PATH for it.

This is a similar change as https://reviews.llvm.org/D79219, which just
landed in master.

Differential revision: https://reviews.llvm.org/D85820
2020-08-17 19:52:52 -07:00
Adrian Prantl
a1a3b86910 Convert to early exit (NFC) 2020-08-17 14:42:25 -07:00
Adrian Prantl
fc1464c6df Simplify error reporting (NFC) 2020-08-17 14:42:25 -07:00
Adrian Prantl
a615ec9a1b Convert if cascade to switch (NFC) 2020-08-17 14:42:25 -07:00
Adrian Prantl
8bb81c29b9 Convert to early exit (NFC) 2020-08-17 14:42:25 -07:00
Adrian Prantl
1d5e9d37c3 Convert to early exit (NFC) 2020-08-17 14:42:24 -07:00
Jonas Devlieghere
e095e98a3a [lldb] Add missing LLDB_REGISTER for GarbageCollectAllocatedModules
Add the missing LLDB_REGISTER_STATIC_METHOD macro and format the file.
2020-08-17 10:14:41 -07:00
Jonas Devlieghere
75966ee241 [lldb] Get rid of helper CMake variables for Python
This patch is a big sed to rename the following variables:

  s/PYTHON_LIBRARIES/Python3_LIBRARIES/g
  s/PYTHON_INCLUDE_DIRS/Python3_INCLUDE_DIRS/g
  s/PYTHON_EXECUTABLE/Python3_EXECUTABLE/g
  s/PYTHON_RPATH/Python3_RPATH/g

I've also renamed the CMake module to better express its purpose and for
consistency with FindLuaAndSwig.

Differential revision: https://reviews.llvm.org/D85976
2020-08-17 08:47:52 -07:00
Raphael Isemann
cfb773c676 [lldb][NFC] Use StringRef in CreateFunctionDeclaration/GetDeclarationName
CreateFunctionDeclaration should just take a StringRef. GetDeclarationName is
(only) used by CreateFunctionDeclaration so that's why now also takes a
StringRef.
2020-08-17 14:17:20 +02:00
Raphael Isemann
7e6c437fb4 [lldb][NFC] Remove name parameter from CreateFunctionTemplateDecl
It's unused and not documented.
2020-08-17 13:44:10 +02:00
Raphael Isemann
cd2139a527 [lldb][NFC] Use the proper type for the 'storage' parameter of CreateFunctionDeclaration
All the callers pass an enum and we cast the int anyway back to the actual type,
so we might as well just use the type for the parameter.
2020-08-17 12:53:58 +02:00
Raphael Isemann
24c74f5e8c [lldb] Don't delete orphaned shared modules in SBDebugger::DeleteTarget
In D83876 the consensus seems that LLDB should never deleted orphaned modules
implicitly. However, SBDebugger::DeleteTarget is currently doing exactly that.
This code was added in 753406221b55b95141c8c1239660dc4db4e35ea5 but I don't see
any explanation in the commit, so I think we should delete it.

Reviewed By: clayborg

Differential Revision: https://reviews.llvm.org/D83933
2020-08-17 11:30:56 +02:00
Pavel Labath
67cdb899c6 [lldb/Utility] Simplify and generalize Scalar class
The class contains an enum listing all host integer types as well as
some non-host types. This setup is a remnant of a time when this class
was actually implemented in terms of host integer types. Now that we are
using llvm::APInt, they are mostly useless and mean that each function
needs to enumerate all of these cases even though it treats most of them
identically.

I only leave e_sint and e_uint to denote the integer signedness, but I
want to remove that in a follow-up as well.

Removing these cases simplifies most of these functions, with the only
exception being PromoteToMaxType, which can no longer rely on a simple
enum comparison to determine what needs to be promoted.

This also makes the class ready to work with arbitrary integer sizes, so
it does not need to be modified when someone needs to add a larger
integer size.

Differential Revision: https://reviews.llvm.org/D85836
2020-08-17 11:09:56 +02:00
Pavel Labath
2d89a3ba12 [lldb] Forcefully complete a type when adding nested classes
With -flimit-debug-info, we can run into cases when we only have a class
as a declaration, but we do have a definition of a nested class. In this
case, clang will hit an assertion when adding a member to an incomplete
type (but only if it's adding a c++ class, and not C struct).

It turns out we already had code to handle a similar situation arising
in the -gmodules scenario. This extends the code to handle
-flimit-debug-info as well, and reorganizes bits of other code handling
completion of types to move functions doing similar things closer
together.

Differential Revision: https://reviews.llvm.org/D85968
2020-08-17 11:09:13 +02:00
Raphael Isemann
c2f9454a16 [lldb] Add SBModule::GarbageCollectAllocatedModules and clear modules after each test run
Right now the only places in the SB API where lldb:: ModuleSP instances are
destroyed are in SBDebugger::MemoryPressureDetected (where it's just attempted
but not guaranteed) and in SBDebugger::DeleteTarget (which will be removed in
D83933). Tests that directly create an lldb::ModuleSP and never create a target
therefore currently leak lldb::Module instances. This triggers the sanity checks
in lldbtest that make sure that the global module list is empty after a test.

This patch adds SBModule::GarbageCollectAllocatedModules as an explicit way to
clean orphaned lldb::ModuleSP instances. Also we now start calling this method
at the end of each test run and move the sanity check behind that call to make
this work. This way even tests that don't create targets can pass the sanity
check.

This fixes TestUnicodeSymbols.py when D83865 is applied (which makes that the
sanity checks actually fail the test).

Reviewed By: JDevlieghere

Differential Revision: https://reviews.llvm.org/D83876
2020-08-17 11:00:19 +02:00
Raphael Isemann
867c347c32 [lldb] Fix that log enable's -f parameter causes LLDB to crash when it can't open the log file
We didn't do anything with the llvm::Error we get from `Open`, so when we end up in the
error case we just crash due to the llvm::Error sanity check. Also add the missing newline
behind the error message so it no longer messes with the next (lldb) prompt.

Reviewed By: JDevlieghere

Differential Revision: https://reviews.llvm.org/D85970
2020-08-17 10:43:00 +02:00
Raphael Isemann
5913f2591c [lldb][NFC] Remove stride parameter from GetArrayElementType
This parameter isn't used anywhere in LLDB nor the Swift downstream branch. It
also doesn't really fit into the TypeSystem APIs that usually don't return
additional related functionality via some output parameters. Also the
implementations already states that the calculated value there is wrong.

Let's remove it. If we need this functionality at some point then Swift's much
nicer `GetByteStride` function seems like the way to go.

Reviewed By: aprantl

Differential Revision: https://reviews.llvm.org/D84299
2020-08-17 10:19:51 +02:00
Pavel Labath
fdc6aea3fd [lldb] Check Decl kind when completing -flimit-debug-info types
The search for the complete class definition can also produce entries
which are not of the expected type. This can happen for instance when
there is a function with the same name as the class we're looking up
(which means that the class needs to be disambiguated with the
struct/class tag in most contexts).

Previously we were just picking the first Decl that the lookup returned,
which later caused crashes or assertion failures if it was not of the
correct type. This patch changes that to search for an entry of the
correct type.

Differential Revision: https://reviews.llvm.org/D85904
2020-08-14 12:31:37 +02:00
Raphael Isemann
f974d64b37 [lldb] Deduplicate copy-pasted TypeSystemMap::GetTypeSystemForLanguage
There are two implementations for `TypeSystemMap::GetTypeSystemForLanguage`
which are both identical beside one taking a `Module` and one taking a `Target`
(and then passing that argument to the `TypeSystem::CreateInstance` function).

This merges both implementations into one function with a lambda that wraps the
different calls to `TypeSystem::CreateInstance`.

Reviewed By: #lldb, JDevlieghere

Differential Revision: https://reviews.llvm.org/D82537
2020-08-14 11:58:54 +02:00
Shu Anzai
de9e85026f [lldb] Display autosuggestion part in gray if there is one possible suggestion
This is relanding D81001. The patch originally failed as on newer editline
versions it seems CC_REFRESH will move the cursor to the start of the line via
\r and then back to the original position. On older editline versions like
the one used by default on macOS, CC_REFRESH doesn't move the cursor at all.
As the patch changed the way we handle tab completion (previously we did
REDISPLAY but now we're doing CC_REFRESH), this caused a few completion tests
to receive this unexpected cursor movement in the output stream.
This patch updates those tests to also accept output that contains the specific
cursor movement commands (\r and then \x1b[XC). lldbpexpect.py received an
utility method for generating the cursor movement escape sequence.

Original summary:

I implemented autosuggestion if there is one possible suggestion.
I set the keybinds for every character. When a character is typed, Editline::TypedCharacter is called.
Then, autosuggestion part is displayed in gray, and you can actually input by typing C-k.
Editline::Autosuggest is a function for finding completion, and it is like Editline::TabCommand now, but I will add more features to it.

Testing does not work well in my environment, so I can't confirm that it goes well, sorry. I am dealing with it now.

Reviewed By: teemperor, JDevlieghere, #lldb

Differential Revision: https://reviews.llvm.org/D81001
2020-08-14 11:37:49 +02:00
Pavel Labath
40d774265b [lldb/Utility] Simplify Scalar::PromoteToMaxType
The function had very complicated signature, because it was trying to
avoid making unnecessary copies of the Scalar object. However, this
class is not hot enough to worry about these kinds of optimizations. My
making copies unconditionally, we can simplify the function and all of
its call sites.

Differential Revision: https://reviews.llvm.org/D85906
2020-08-14 11:09:16 +02:00
Raphael Isemann
bbe3c479a6 [lldb] Fix a crash when tab-completion an empty line in a function with only one local variable
When LLDB sees only one possible completion for an input, it will add a trailing
space to the completion to signal that to the user. If the current argument is
quoted, that also means LLDB needs to add the trailing quote to finish the
current argument first.

In case the user is in a function with only one local variable and is currently
editing an empty line in the multiline expression editor, then we are in the
unique situation where we can have a unique completion for an empty input line.
(In a normal LLDB session this would never occur as empty input would just list
all the possible commands).

In this special situation our check if the current argument needs to receive a
trailing quote will crash LLDB as there is no current argument and the
completion code just unconditionally tries to access the current argument. This
just adds the missing check if we even have a current argument before we check
if we need to add a terminating quote character.

Reviewed By: labath

Differential Revision: https://reviews.llvm.org/D85903
2020-08-14 09:06:52 +02:00
shafik
25bbceb047 [LLDB] Fix how ValueObjectChild handles bit-fields stored in a Scalar in UpdateValue()
When bit-field data was stored in a Scalar in ValueObjectChild during UpdateValue()
it was extracting the bit-field value. Later on in lldb_private::DumpDataExtractor(…)
we were again attempting to extract the bit-field. Which would then not obtain the
correct value. This will remove the extra extraction in UpdateValue().
We hit this specific case when values are passed in registers, which we could only
reproduce in an optimized build.

Differential Revision: https://reviews.llvm.org/D85376
2020-08-13 11:53:14 -07:00
Raphael Isemann
8af160b0b8 [lldb][NFC] Use llvm::is_contained instead of std::find in a few places 2020-08-13 14:11:28 +02:00
Raphael Isemann
ac2b7f8ac1 [lldb][NFC] Fix indentation in TCPSocket::CloseListenSockets 2020-08-13 12:29:24 +02:00
Vedant Kumar
d49aedd315 Build a flat LLDB.framework for embedded Darwin targets
This patch configures LLDB.framework to build as a flat unversioned
framework on non-macOS Darwin targets, which have never supported the
macOS framework layout.

This patch also renames the 'IOS' cmake variable to 'APPLE_EMBEDDED' to
reflect the fact that lldb is built for several different kinds of embedded
Darwin targets, not just iOS.

Differential Revision: https://reviews.llvm.org/D85770
2020-08-12 13:34:29 -07:00
Raphael Isemann
cff880b0c9 Revert "[lldb] Display autosuggestion part in gray if there is one possible suggestion"
This reverts commit 246afe0cd17fce935a01171f3cca548e02523e5c. This broke
the following tests on Linux it seems:
  lldb-api :: commands/expression/multiline-completion/TestMultilineCompletion.py
  lldb-api :: iohandler/completion/TestIOHandlerCompletion.py
2020-08-12 13:52:03 +02:00
Shu Anzai
246afe0cd1 [lldb] Display autosuggestion part in gray if there is one possible suggestion
I implemented autosuggestion if there is one possible suggestion.
I set the keybinds for every character. When a character is typed, Editline::TypedCharacter is called.
Then, autosuggestion part is displayed in gray, and you can actually input by typing C-k.
Editline::Autosuggest is a function for finding completion, and it is like Editline::TabCommand now, but I will add more features to it.

Testing does not work well in my environment, so I can't confirm that it goes well, sorry. I am dealing with it now.

Reviewed By: teemperor, JDevlieghere, #lldb

Differential Revision: https://reviews.llvm.org/D81001
2020-08-12 13:11:20 +02:00
Petr Hosek
31e5f7120b [CMake] Simplify CMake handling for zlib
Rather than handling zlib handling manually, use find_package from CMake
to find zlib properly. Use this to normalize the LLVM_ENABLE_ZLIB,
HAVE_ZLIB, HAVE_ZLIB_H. Furthermore, require zlib if LLVM_ENABLE_ZLIB is
set to YES, which requires the distributor to explicitly select whether
zlib is enabled or not. This simplifies the CMake handling and usage in
the rest of the tooling.

This is a reland of abb0075 with all followup changes and fixes that
should address issues that were reported in PR44780.

Differential Revision: https://reviews.llvm.org/D79219
2020-08-11 20:22:11 -07:00
Adrian McCarthy
479f5bfdb0 [LLDB] Improve PDB discovery
When loading a PE/COFF target, the associated PDB file often wasn't
found.  The executable module contains a path for the associated PDB
file, but people often debug from a different directory than the one
their build system uses.  (This is especially common in post-mortem
and cross platform debugging.)

Suppose the COFF executable being debugged is `~/proj/foo.exe`, but
it was built elsewhere and refers to `D:\remote\build\env\foobar.pdb`,
LLDB wouldn't find it.

With this change, if no file exists at the PDB path, LLDB will look
in the executable directory for a PDB file that matches the name of
the one it expected (e.g., `~/proj/foobar.pdb`).  If found, the PDB
is subject to the same matching criteria (GUIDs and age) as would
have been used had it been in the original location.

This same-directory-as-the-binary rule is commonly used by debuggers
on Windows.

Differential Review: https://reviews.llvm.org/D84815
2020-08-11 13:44:14 -07:00
Jonas Devlieghere
c135744b1d [lldb/CMake] Separate CMake code for Lua and Python (NFC)
Separate the CMake logic for Lua and Python to clearly distinguish
between code specific to either scripting language and the code shared
by both.

What this patch does is:

 - Move Python specific code into the bindings/python subdirectory.
 - Move the Lua specific code into the bindings/lua subdirectory.
 - Add the _python suffix to Python specific functions/targets.
 - Fix a dependency issue that would check the binding instead of
   whether the scripting language is enabled.

Note that this patch also changes where the bindings are generated,
which might affect downstream projects that check them in.

Differential revision: https://reviews.llvm.org/D85708
2020-08-11 09:04:18 -07:00
Raphael Isemann
950f1bf976 [lldb] Add SubstTemplateTypeParm to RemoveWrappingTypes
Like the other type sugar removed by RemoveWrappingTypes, SubstTemplateTypeParm
is just pure sugar that should be ignored. If we don't ignore it (as we do now),
LLDB will fail to read values from record fields that have a
SubstTemplateTypeParm type.

Only way to produce such a type in LLDB is to either use the `import-std-module`
setting to get a template into the expression parser or just create your own
template directly in the expression parser which is what we do in the test.

Reviewed By: jarin

Differential Revision: https://reviews.llvm.org/D85132
2020-08-11 14:31:47 +02:00
Gongyu Deng
4f3559db1f [lldb] watchpoint ID common completion for commands watchpoint delete/enable/disable/modify/ignore
1. Added a common completion WatchPointIDs to complete with a list of the IDs of the current watchpoints;
2. Applied the completion to these commands: watchpoint delete/enable/disable/modify/ignore;
3. Added a correlated test case.

Reviewed By: teemperor

Differential Revision: https://reviews.llvm.org/D84104
2020-08-11 14:25:09 +02:00
Gongyu Deng
a952fe236f [lldb] thread index common completion for commands like thread select/step-over
1. Added a common completion completing with a list of the threads of the current process;
2. Apply the common completion above to these commands: thread
   continue/info/exception/select/step-in/step-inst/step-inst-over/step-out/step-over/step-script​
3. Correlated test case test_common_completion_thread_index.

Reviewed By: teemperor

Differential Revision: https://reviews.llvm.org/D84088
2020-08-11 13:27:13 +02:00
Gongyu Deng
b2b7dbb47a [lldb] stop-hook ID common completion for commands `target stop-hook enable/disable/delete'
1. Added a common completion StopHookIDs to provide completion with a list of stop hook ids;
2. Applied the common completion to commands: `target stop-hook delete/enable/disable';
3. Added an related test case.

Reviewed By: teemperor

Differential Revision: https://reviews.llvm.org/D84123
2020-08-11 13:14:27 +02:00
Raphael Isemann
33d0031edb [lldb] Fix unhandled switch case for GOFF in GDBRemoteCommunicationClient
Just implementing the default case that emits an error to supress the compiler
warning.
2020-08-11 12:57:18 +02:00
Gongyu Deng
419f1be7b5 [lldb] tab completion for target modules load -u
1. Added a common completion ModuleUUIDs to provide a list of the UUIDs of modules for completion;
2. Added a new enumeration item eArgTypeModuleUUID to CommandArgumentType which is set as the option argument type of OptionGroupUUID;
3. Applied the module UUID completion to the argument of the type eArgTypeModuleUUID in lldb/source/Interpreter/CommandObject.cpp;
4. Added an related test case in lldb/test/API/functionalities/completion/TestCompletion.py.
2020-08-11 12:35:36 +02:00
Gongyu Deng
66fa73fa27 [lldb] move the frame index completion into a common completion and apply it to thread backtrace -s
Commands frame select and thread backtrace -s can be completed in the same way.
Moved the dedicated completion of frame select into a common completion and
apply it to the both commands, along with the test modified.
2020-08-11 12:25:39 +02:00
Gongyu Deng
24bc8afd4b [lldb] tab completion for target modules search-paths insert​
Dedicated completion for the command `target modules search-paths insert​` with a test case.

Reviewed By: JDevlieghere

Differential Revision: https://reviews.llvm.org/D83309
2020-08-11 11:58:14 +02:00
Gongyu Deng
3ce57e0121 [lldb] type language common completion
1. Added a new common completion TypeLanguages to provide a list of supporting languages;
2. Bound the completion to eArgTypeLanguage;
3. Added a related test case.
2020-08-11 11:07:19 +02:00
Gongyu Deng
31fd64ac57 [lldb] tab completion for 'command delete/unalias'
Provided dedicated tab completions for `command delete/unalias`.

Reviewed By: teemperor

Differential Revision: https://reviews.llvm.org/D81128
2020-08-11 10:27:04 +02:00
Raphael Isemann
df916062c8 [lldb][NFC] Fix warning in Thread::AutoCompleteThreadPlans 2020-08-11 10:26:01 +02:00