282 Commits

Author SHA1 Message Date
Jim Ingham 1893065d7b Allow the ThreadPlanStackMap to hold the thread plans for threads
that were not reported by the OS plugin.  To facilitate this, move
adding/updating the ThreadPlans for a Thread to the ThreadPlanStackMap.
Also move dumping thread plans there as well.

Added some tests for "thread plan list" and "thread plan discard" since
I didn't seem to have written any originally.

Differential Revision: https://reviews.llvm.org/D76814
2020-04-03 14:56:28 -07:00
Jim Ingham 61e8e6882d Move thread plan stacks into the Process, indexed by TID.
Differential Revision: https://reviews.llvm.org/D75880
2020-04-03 14:56:28 -07:00
Pavel Labath d00dff88b4 [lldb] Make UnwindLLDB a non-plugin
Summary:
This is the only real unwinder, and things have been this way for quite
a long time. At this point, the class has accumulated so many features
it is unlikely that anyone will want to reimplement the whole thing.

The class is also fairly closely coupled (through UnwindPlans and
FuncUnwinders) with a lot of other lldb components that it is hard to
imagine a different unwinder implementation being substantially
different without reimplementing all of those.

The existing unwinding functionality is nonetheless fairly complex and
there is space for adding more structure to it, but I believe a more
worthwhile effort would be to take the existing UnwindLLDB class and try
to break it down and introduce extension/customization points, instead
of writing a brand new Unwind implementation.

Reviewers: jasonmolenda, JDevlieghere, xiaobai

Subscribers: mgorny, lldb-commits

Tags: #lldb

Differential Revision: https://reviews.llvm.org/D75848
2020-03-10 13:56:15 +01:00
Pavel Labath c0b1af6878 [lldb] Return Unwinder& from Thread::GetUnwinder
The function always returns a valid object. Let the return type reflect
that, and remove some null checks.
2020-03-09 14:13:22 +01:00
Pavel Labath 71c1c18474 [lldb] Delete UnwindMacOSXFrameBackchain
Summary:
It isn't used anywhere (except on imaginary triples like
sparc-apple-ios) and it also violates plugin separation.

This patch deletes it and declares UnwindLLDB to be _the_ lldb unwinder.

Reviewers: jasonmolenda, JDevlieghere, xiaobai

Subscribers: jyknight, mgorny, krytarowski, fedor.sergeev, lldb-commits

Tags: #lldb

Differential Revision: https://reviews.llvm.org/D75680
2020-03-06 08:27:13 +01:00
Fred Riss 20ce8affce [lldb/API] NFC: Reformat and simplify SBThread::GetStopDescription()
Summary:
This gets rid of some nesting and of the raw char* variable that caused
the memory management bug we hit recently.

This commit also removes the fallback code which should trigger when
the StopInfo provides no stop description. All currently implemented
StopInfos have a `GetDescription()` method that shouldn't return an
empty description.

Reviewers: JDevlieghere, labath, mib

Subscribers: lldb-commits

Tags: #lldb

Differential Revision: https://reviews.llvm.org/D74157
2020-03-02 17:43:35 -08:00
Med Ismail Bennani 7ebe9cc4fc [lldb/Target] Add Assert StackFrame Recognizer
When a thread stops, this checks depending on the platform if the top frame is
an abort stack frame. If so, it looks for an assert stack frame in the upper
frames and set it as the most relavant frame when found.

To do so, the StackFrameRecognizer class holds a "Most Relevant Frame" and a
"cooked" stop reason description. When the thread is about to stop, it checks
if the current frame is recognized, and if so, it fetches the recognized frame's
attributes and applies them.

rdar://58528686

Differential Revision: https://reviews.llvm.org/D73303

Signed-off-by: Med Ismail Bennani <medismail.bennani@gmail.com>
2020-02-06 18:27:48 +01:00
Pavel Labath 98b273c893 Revert "[lldb/Target] Add Assert StackFrame Recognizer"
This reverts commit 2b7f32892b because of test
failures due to dangling pointers.
2020-02-05 15:51:38 -08:00
Med Ismail Bennani 2b7f32892b [lldb/Target] Add Assert StackFrame Recognizer
When a thread stops, this checks depending on the platform if the top frame is
an abort stack frame. If so, it looks for an assert stack frame in the upper
frames and set it as the most relavant frame when found.

To do so, the StackFrameRecognizer class holds a "Most Relevant Frame" and a
"cooked" stop reason description. When the thread is about to stop, it checks
if the current frame is recognized, and if so, it fetches the recognized frame's
attributes and applies them.

rdar://58528686

Differential Revision: https://reviews.llvm.org/D73303

Signed-off-by: Med Ismail Bennani <medismail.bennani@gmail.com>
2020-02-05 17:49:13 +01:00
Benjamin Kramer adcd026838 Make llvm::StringRef to std::string conversions explicit.
This is how it should've been and brings it more in line with
std::string_view. There should be no functional change here.

This is mostly mechanical from a custom clang-tidy check, with a lot of
manual fixups. It uncovers a lot of minor inefficiencies.

This doesn't actually modify StringRef yet, I'll do that in a follow-up.
2020-01-28 23:25:25 +01:00
Med Ismail Bennani 954d04295b Revert "[lldb/Target] Add Assert StackFrame Recognizer"
This reverts commit 03a6b858fd.

The test doesn't pass on Debian.
2020-01-28 18:40:08 +01:00
Med Ismail Bennani 03a6b858fd [lldb/Target] Add Assert StackFrame Recognizer
When a thread stops, this checks depending on the platform if the top frame is
an abort stack frame. If so, it looks for an assert stack frame in the upper
frames and set it as the most relavant frame when found.

To do so, the StackFrameRecognizer class holds a "Most Relevant Frame" and a
"cooked" stop reason description. When the thread is about to stop, it checks
if the current frame is recognized, and if so, it fetches the recognized frame's
attributes and applies them.

rdar://58528686

Differential Revision: https://reviews.llvm.org/D73303

Signed-off-by: Med Ismail Bennani <medismail.bennani@gmail.com>
2020-01-28 18:21:29 +01:00
Raphael Isemann 808142876c [lldb][NFC] Fix all formatting errors in .cpp file headers
Summary:
A *.cpp file header in LLDB (and in LLDB) should like this:
```
//===-- TestUtilities.cpp -------------------------------------------------===//
```
However in LLDB most of our source files have arbitrary changes to this format and
these changes are spreading through LLDB as folks usually just use the existing
source files as templates for their new files (most notably the unnecessary
editor language indicator `-*- C++ -*-` is spreading and in every review
someone is pointing out that this is wrong, resulting in people pointing out that this
is done in the same way in other files).

This patch removes most of these inconsistencies including the editor language indicators,
all the different missing/additional '-' characters, files that center the file name, missing
trailing `===//` (mostly caused by clang-format breaking the line).

Reviewers: aprantl, espindola, jfb, shafik, JDevlieghere

Reviewed By: JDevlieghere

Subscribers: dexonsmith, wuzish, emaste, sdardis, nemanjai, kbarton, MaskRay, atanasyan, arphaman, jfb, abidh, jsji, JDevlieghere, usaxena95, lldb-commits

Tags: #lldb

Differential Revision: https://reviews.llvm.org/D73258
2020-01-24 08:52:55 +01:00
Tatyana Krasnukha faf6b2543e [ARC] Basic support in gdb-remote process plugin
Differential Revision: https://reviews.llvm.org/D55718

llvm-svn: 375122
2019-10-17 15:16:21 +00:00
Jason Molenda 7dd7a36075 Add arm64_32 support to lldb, an ILP32 codegen
that runs on arm64 ISA targets, specifically 
Apple watches.


Differential Revision: https://reviews.llvm.org/D68858

llvm-svn: 375032
2019-10-16 19:14:49 +00:00
Jim Ingham 27a14f19c8 Pass an SBStructuredData to scripted ThreadPlans on use.
This will allow us to write reusable scripted ThreadPlans, since
you can use key/value pairs with known keys in the plan to parametrize
its behavior.

Differential Revision: https://reviews.llvm.org/D68366

llvm-svn: 373675
2019-10-03 22:50:18 +00:00
Jim Ingham 7049b0ad4d Stop-hooks weren't getting called on step-out. Fix that.
There was a little bit of logic in the StopInfoBreakpoint::PerformAction
that would null out the StopInfo once we had a completed plan so that the
next call to GetStopInfo would replace it with the StopInfoThreadPlan.

But the stop-hooks check for whether a thread stopped for a reason didn't
trigger this conversion.  So I added an API to do that directly, and then
called it where before we just reset the StopInfo.

<rdar://problem/54270767>

Differential Revision: https://reviews.llvm.org/D66241

llvm-svn: 369052
2019-08-15 21:37:52 +00:00
Jordan Rupprecht 6a253d378b [lldb] Qualify includes of Properties[Enum].inc files. NFC
Summary:
This is a bit more explicit, and makes it possible to build LLDB without
varying the -I lines per-directory.
(The latter is useful because many build systems only allow this to be
configured per-library, and LLDB is insufficiently layered to be split into
multiple libraries on stricter build systems).

(My comment on D65185 has some more context)

Reviewers: JDevlieghere, labath, chandlerc, jdoerfert

Reviewed By: labath

Subscribers: mgorny, lldb-commits

Tags: #lldb

Differential Revision: https://reviews.llvm.org/D65397

Patch by Sam McCall!

llvm-svn: 367241
2019-07-29 17:22:10 +00:00
Jonas Devlieghere a8ea595509 [lldb] Also include the array definition in Properties.inc
Right now our Properties.inc only generates the initializer for the
options list but not the array declaration boilerplate around it. As the
array definition is identical for all arrays, we might as well also let
the Properties.inc generate it alongside the initializers.

Unfortunately we cannot do the same for enums, as there's this magic
ePropertyExperimental, which needs to come at the end to be interpreted
correctly. Hopefully we can get rid of this in the future and do the
same for the property enums.

Differential revision: https://reviews.llvm.org/D65353

llvm-svn: 367238
2019-07-29 16:41:30 +00:00
Jonas Devlieghere 463a48e416 [TableGen] Move target properties into a separate file (NFC)
With the plugins having their own tablgen file, it makes sense to split
off the target properties as well.

llvm-svn: 367139
2019-07-26 18:14:08 +00:00
Jonas Devlieghere 971f9ca612 Let tablegen generate property definitions
Property definitions are currently defined in a PropertyDefinition array
and have a corresponding enum to index in this array. Unfortunately this
is quite error prone. Indeed, just today we found an incorrect merge
where a discrepancy between the order of the enum values and their
definition caused the test suite to fail spectacularly.

Tablegen can streamline the process of generating the property
definition table while at the same time guaranteeing that the enums stay
in sync. That's exactly what this patch does. It adds a new tablegen
file for the properties, building on top of the infrastructure that
Raphael added recently for the command options. It also introduces two
new tablegen backends: one for the property definitions and one for
their corresponding enums.

It might be worth mentioning that I generated most of the tablegen
definitions from the existing property definitions, by adding a dump
method to the struct. This seems both more efficient and less error
prone that copying everything over by hand. Only Enum properties needed
manual fixup for the EnumValues and DefaultEnumValue fields.

Differential revision: https://reviews.llvm.org/D65185

llvm-svn: 367058
2019-07-25 21:36:37 +00:00
Jonas Devlieghere 63e5fb76ec [Logging] Replace Log::Printf with LLDB_LOG macro (NFC)
This patch replaces explicit calls to log::Printf with the new LLDB_LOGF
macro. The macro is similar to LLDB_LOG but supports printf-style format
strings, instead of formatv-style format strings.

So instead of writing:

  if (log)
    log->Printf("%s\n", str);

You'd write:

  LLDB_LOG(log, "%s\n", str);

This change was done mechanically with the command below. I replaced the
spurious if-checks with vim, since I know how to do multi-line
replacements with it.

  find . -type f -name '*.cpp' -exec \
  sed -i '' -E 's/log->Printf\(/LLDB_LOGF\(log, /g' "{}" +

Differential revision: https://reviews.llvm.org/D65128

llvm-svn: 366936
2019-07-24 17:56:10 +00:00
Alex Langford 591ede411d [Target] Adjust header in Thread
llvm-svn: 362318
2019-06-02 06:03:05 +00:00
Alex Langford 03e1a82f52 [Target] Introduce Process::GetLanguageRuntimes
Summary:
Currently there's not really a good way to iterate over the language runtimes a
process has. This is sometimes desirable (as seen in my change to Thread).
Additionally, there's not really a good reason to iterate over every available
language, but rather only over languages for which we have a plugin loaded.

Reviewers: JDevlieghere, davide, jingham

Subscribers: lldb-commits

Differential Revision: https://reviews.llvm.org/D62562

llvm-svn: 361999
2019-05-29 18:08:22 +00:00
Jonas Devlieghere 09ad8c8f73 Fix integer literals which are cast to bool
This change replaces built-in types that are implicitly converted to
booleans.

Differential revision: https://reviews.llvm.org/D62284

llvm-svn: 361580
2019-05-24 00:44:33 +00:00