Commit Graph

4879 Commits

Author SHA1 Message Date
Walter Erquinigo bddebca61e [intel-pt] Refactor the JSON parsing
Recently https://reviews.llvm.org/D88103 introduced a nice API for
converting a JSON object into C++ types, which include nice error
messaging.

I'm using that new functioniality to perform the parsing in a much more
elegant way. As a result, the code looks simpler and more maintainable,
as we aren't parsing anymore individual fields manually.

I updated the test cases accordingly.

Differential Revision: https://reviews.llvm.org/D88264
2020-09-24 16:35:34 -07:00
Walter Erquinigo 74c93956e1 Add a "Trace" plug-in to LLDB to add process trace support in stages.
This is the first in a series of patches that will adds a new processor trace plug-in to LLDB.

The idea for this first patch to to add the plug-in interface with simple commands for the trace files that can "load" and "dump" the trace information. We can test the functionality and ensure people are happy with the way things are done and how things are organized before moving on to adding more functionality.

Processor trace information can be view in a few different ways:
- post mortem where a trace is saved off that can be viewed later in the debugger
- gathered while a process is running and allow the user to step back in time (with no variables, memory or registers) to see how each thread arrived at where it is currently stopped.

This patch attempts to start with the first solution of loading a trace file after the fact. The idea is that we will use a JSON file to load the trace information. JSON allows us to specify information about the trace like:
- plug-in name in LLDB
- path to trace file
- shared library load information so we can re-create a target and symbolicate the information in the trace
- any other info that the trace plug-in will need to be able to successfully parse the trace information
  - cpu type
  - version info
  - ???

A new "trace" command was added at the top level of the LLDB commmands:
- "trace load"
- "trace dump"

I did this because if we load trace information we don't need to have a process and we might end up creating a new target for the trace information that will become active. If anyone has any input on where this would be better suited, please let me know. Walter Erquinigo will end up filling in the Intel PT specific plug-in so that it works and is tested once we can agree that the direction of this patch is the correct one, so please feel free to chime in with ideas on comments!

Reviewed By: clayborg

Differential Revision: https://reviews.llvm.org/D85705
2020-09-21 17:13:18 -07:00
Jonas Devlieghere 57dd92746a [lldb] Return FileSP and StreamFileSP by value in IOHandler (NFC)
Smart pointers should be returned by value.
2020-09-16 21:15:05 -07:00
Dave Lee 757ac4ccfb [lldb] Reword CompilerType docstring to not say "generic type"
Since "generic type" has a precise meaning in some languages, reword the docstring of `CompilerType` to avoid ambiguity.

Differential Revision: https://reviews.llvm.org/D87633
2020-09-15 22:14:57 -07:00
Med Ismail Bennani 4da8fa45a0 [lldb/API] Add Breakpoint::SerializeToStructuredData to SBAPI
This patch adds a way to fetch breakpoint metadatas as a serialized
`Structured` Data format (JSON). This can be used by IDEs to update
their UI when a breakpoint is set or modified from the console.

rdar://11013798

Differential Revision: https://reviews.llvm.org/D87491

Signed-off-by: Med Ismail Bennani <medismail.bennani@gmail.com>
2020-09-11 20:09:55 +02:00
Jonas Devlieghere 3746906193 [lldb] Add reproducer verifier
Add a reproducer verifier that catches:

 - Missing or invalid home directory
 - Missing or invalid working directory
 - Missing or invalid module/symbol paths
 - Missing files from the VFS

The verifier is enabled by default during replay, but can be skipped by
passing --reproducer-no-verify.

Differential revision: https://reviews.llvm.org/D86497
2020-09-02 22:00:00 -07:00
Med Ismail Bennani addb5148f5 [lldb/Target] Add custom interpreter option to `platform shell`
This patch adds the ability to use a custom interpreter with the
`platform shell` command. If the user set the `-s|--shell` option
with the path to a binary, lldb passes it down to the platform's
`RunShellProcess` method and set it as the shell to use in
`ProcessLaunchInfo to run commands.

Note that not all the Platforms support running shell commands with
custom interpreters (i.e. RemoteGDBServer is only expected to use the
default shell).

This patch also makes some refactoring and cleanups, like swapping
CString for StringRef when possible and updating `SBPlatformShellCommand`
with new methods and a new constructor.

rdar://67759256

Differential Revision: https://reviews.llvm.org/D86667

Signed-off-by: Med Ismail Bennani <medismail.bennani@gmail.com>
2020-09-02 16:36:10 +02:00
Jonas Devlieghere 9390b346fc [lldb] Move ScriptCommand and RegexCommand under Commands (NFC)
Move the CommandObjectScript and CommandObjectRegexCommand under
Commands where all the other CommandObject implementations live.

Although neither implementations currently use the TableGen-generated
CommandOptions.inc, this move would have been necessary anyway if they
were to in the future.
2020-09-01 17:33:39 -07:00
Raphael Isemann 7c80f2da81 Revert "[lldb] Add reproducer verifier"
This reverts commit 297f69afac. It broke
the Fedora 33 x86-64 bot. See the review for more info.
2020-09-01 12:21:44 +02:00
Jonas Devlieghere 297f69afac [lldb] Add reproducer verifier
Add a reproducer verifier that catches:

 - Missing or invalid home directory
 - Missing or invalid working directory
 - Missing or invalid module/symbol paths
 - Missing files from the VFS

The verifier is enabled by default during replay, but can be skipped by
passing --reproducer-no-verify.

Differential revision: https://reviews.llvm.org/D86497
2020-08-31 15:14:18 -07:00
Gongyu Deng 1cd99fe9d4 [lldb] tab completion for class `CommandObjectTypeFormatterDelete`
1. Added a dedicated completion to class `CommandObjectTypeFormatterDelete`
   which can be used by these commands: `type filter/format/summary/synthetic delete`;
2. Added a related test case.

Reviewed By: teemperor

Differential Revision: https://reviews.llvm.org/D84142
2020-08-31 14:18:07 +02:00
Pavel Labath 9b50546b0b [lldb/Utility] Polish the Scalar class
This patch is mostly about removing the "Category" enum, which was
very useful when the Type enum contained a large number of types, but
now the two are completely identical.

It also removes some other artifacts like unused typedefs and macros.
2020-08-28 11:51:25 +02:00
Pavel Labath 219ccdfdde [lldb/Utility] Use APSInt in the Scalar class
This enables us to further simplify some code because it no longer needs
to switch on the signedness of the type (APSInt handles that).
2020-08-27 15:05:47 +02:00
Benjamin Kramer 642cb7865f Copy m_plan_is_for_signal_trap member.
Otherwise it would stay uninitialized. Found by msan.
2020-08-26 13:27:01 +02:00
Dave Lee 66c4880291 Remove unused/misnamed SetObjectModificationTime
Remove `SetObjectModificationTime` which is not currently used, and assigns to the wrong member.

Differential Revision: https://reviews.llvm.org/D86493
2020-08-25 14:49:34 -07:00
Jonas Devlieghere 521220690a [lldb] Make Reproducer compatbile with SubsystemRAII (NFC)
Make Reproducer compatbile with SubsystemRAII and use it in
LocateSymbolFileTest.
2020-08-25 13:00:04 -07:00
Jonas Devlieghere a842950b62 [lldb] Add a SymbolFileProvider to record and replay calls to dsymForUUID
When replaying a reproducer captured from a core file, we always use
dsymForUUID for the kernel binary. When enabled, we also use it to find
kexts. Since these files are already contained in the reproducer,
there's no reason to call out to an external tool. If the tool returns a
different result, e.g. because the dSYM got garbage collected, it will
break reproducer replay. The SymbolFileProvider solves the issue by
mapping UUIDs to module and symbol paths in the reproducer.

Differential revision: https://reviews.llvm.org/D86389
2020-08-24 15:09:08 -07:00
Gongyu Deng 188f1ac301 [lldb] type category name common completion
1. Added a new common completion TypeCategoryNames to provide a list of category names for completion;
2. Applied the completion to these commands: type category delete/enable/disable/list/define;
3. Added a related test case;
4. Bound the completion to the arguments of the type 'eArgTypeName'.

Reviewed By: teemperor, JDevlieghere

Differential Revision: https://reviews.llvm.org/D84124
2020-08-24 19:54:23 +02:00
Gongyu Deng 3cd8d7b172 [lldb] Remote disk file/directory completion for platform commands
1. Extended the gdb-remote communication related classes with disk file/directory
   completion functions;
2. Added two common completion functions RemoteDiskFiles and
   RemoteDiskDirectories based on the functions above;
3. Added completion for these commands:
   A. platform get-file <remote-file> <local-file>;
   B. platform put-file <local-file> <remote-file>;
   C. platform get-size <remote-file>;
   D. platform settings -w <remote-dir>;
   E. platform open file <remote-file>.
4. Added related tests for client and server;
5. Updated docs/lldb-platform-packets.txt.

Reviewed By: labath

Differential Revision: https://reviews.llvm.org/D85284
2020-08-24 17:55:54 +02:00
Gongyu Deng 19311f5c3e [lldb] common completion for process pids and process names
1. Added two common completions: `ProcessIDs` and `ProcessNames`, which are
refactored from their original dedicated option completions;
2. Removed the dedicated option completion functions of `process attach` and
`platform process attach`, so that they can use arg-type-bound common
completions instead;
3. Bound `eArgTypePid` to the pid completion, `eArgTypeProcessName` to the
process name completion in `CommandObject.cpp`;
4. Added a related test case.

Reviewed By: teemperor

Differential Revision: https://reviews.llvm.org/D80700
2020-08-24 17:30:43 +02:00
Pavel Labath 0e301fd023 [lldb/Utility] Remove some Scalar type accessors
Now that the number of Scalar "types" has been reduced, these don't make
sense anymore.
2020-08-24 11:45:30 +02:00
Jonas Devlieghere bb894b9782 [lldb] Extract reproducer providers & co into their own header.
Extract all the provider related logic from Reproducer.h and move it
into its own header ReproducerProvider.h. These classes are seeing most
of the development these days and this reorganization reduces
incremental compilation from ~520 to ~110 files when making changes to
the new header.
2020-08-22 10:04:27 -07:00
Gongyu Deng e1cd7cac8a [lldb] Tab completion for process load/unload
1. Complete `process load` with the common disk file completion, so there is not test provided for it;
2. Complete `process unload` with the tokens of valid loaded images.

Thanks for Raphael's help on the test for `process unload`.

Reviewed By: teemperor

Differential Revision: https://reviews.llvm.org/D79887
2020-08-21 10:36:39 +02:00
Jonas Devlieghere 6ad3de350c [lldb] Fix a new -Wdocumetnation issues (NFC) 2020-08-20 22:59:13 -07:00
Jonas Devlieghere 73af341beb [lldb] Capture and load home directory from the reproducer.
When replaying the reproducer, lldb should source the .lldbinit file
that was captured by the reproducer and not the one in the current home
directory. This requires that we store the home directory as part of the
reproducer. By returning the virtual home directory during replay, we
ensure the correct virtual path gets constructed which the VFS can then
find and remap to the correct file in the reproducer root.

This patch adds a new HomeDirectoryProvider, similar to the existing
WorkingDirectoryProvider. As the home directory is not part of the VFS,
it is stored in LLDB's FileSystem instance.
2020-08-20 18:08:59 -07:00
Jonas Devlieghere c90ca0c8e4 [lldb] Implement WorkingDirectoryProvider in terms of DirectoryProvider (NFC)
Add an abstract base class that can be used to create other directory
providers.
2020-08-20 18:08:59 -07:00
Eric Leese 4e266eaf13 Make DWARFExpression::GetLocationExpression public
This method is used to get the DataExtractor when the expression is a location list.

Reviewed By: labath

Differential Revision: https://reviews.llvm.org/D86090
2020-08-20 15:12:28 -07:00
Jonas Devlieghere 921c1b7df3 [lldb] Provide GetHomeDirectory wrapper in Host::FileSystem (NFC)
Provider a wrapper around llvm::sys::path::home_directory in the
FileSystem class. This will make it possible for the reproducers to
intercept the call in a central place.
2020-08-20 14:07:05 -07:00
Gongyu Deng 22e63cba17 [lldb] tab completion for breakpoint names
1. created a common completion for breakpoint names;
2. bound the breakpoint name common completion with eArgTypeBreakpointName;
3. implemented the dedicated completion for breakpoint read -N.

Reviewed By: JDevlieghere

Differential Revision: https://reviews.llvm.org/D80693
2020-08-20 20:56:34 +02:00
Jordan Rupprecht 0de3d0c612 [lldb][asan] Mark destructor as virtual to allow subclasses.
`lldb_private::ScriptInterpreterPython::CommandDataPython` inherits from `lldb_private::BreakpointOptions::CommandData`, but the latter does not have a virtual destructor. This leads to a new-delete-type-mismatch error when running certain tests (such as `functionalities/breakpoint/breakpoint_command/TestBreakpointCommand.py`) under asan.
2020-08-20 09:21:33 -07:00
Pavel Labath 8a8a2dd316 [lldb/Utility] Simplify Scalar handling of float types
Similarly to D85836, collapse all Scalar float types to a single enum
value, and use APFloat semantics to differentiate between. This
simplifies the code, and opens to door to supporting other floating
point semantics (which would be needed for fully supporting
architectures with more interesting float types such as PPC).

Differential Revision: https://reviews.llvm.org/D86220
2020-08-20 16:26:02 +02:00
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 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
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 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
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 cff880b0c9 Revert "[lldb] Display autosuggestion part in gray if there is one possible suggestion"
This reverts commit 246afe0cd1. 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
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
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 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
Gongyu Deng f99a18bbaa [lldb] tab completion for `thread plan discard`
Dedicated completion for the command `thread plan discard` with a corresponding
test case.

Reviewed By: teemperor

Differential Revision: https://reviews.llvm.org/D83234
2020-08-11 10:08:16 +02:00
Raphael Isemann 51117e3c51 [lldb][NFC] Remove unused custom reimplementation of realpath for Windows
No one is calling this function it seems and according to
https://bugs.llvm.org/show_bug.cgi?id=47088 this can leak memory, so let's just
remove it:

Quote from the bug report:
> Before return on line 146, the memory allocated on line 130 is not freed.

Reviewed By: amccarth

Differential Revision: https://reviews.llvm.org/D85633
2020-08-11 10:04:42 +02:00
Gongyu Deng 8a5e296975 [lldb] tab completion for `disassemble -F`
1.Added a new common completion DisassemblyFlavors;

2. Bound DisassemblyFlavors to argument of type eArgTypeDisassemblyFlavor in
CommandObject.cpp;

3. Added a related test case.
2020-08-11 10:01:45 +02:00