Commit Graph

786 Commits

Author SHA1 Message Date
Saleem Abdulrasool 55eec2ba96 build: workaround stale caches (NFC)
`LLVM_DEFAULT_TARGET_TRIPLE` is a cached variable, which means that it
may actually be unset.  Furthermore, in standalone builds, the variable
may be fully undefined.  Apply the regular expression over the empty
string in such a case.  This should improve the state of the green
dragon bot.
2019-10-29 08:20:58 -07:00
Vedant Kumar 82d3ba87d0 [debugserver] Detect arch from LLVM_DEFAULT_TARGET_TRIPLE
The debugserver build needs to conditionally include files depending on the
target architecture.

Switch on the architecture specified by LLVM_DEFAULT_TARGET_TRIPLE, as
the llvm and swift build systems use this variable to identify the
target (the latter, indirectly, through LLVM_HOST_TRIPLE).

It would be possible to switch on CMAKE_OSX_ARCHITECTURES, but the swift
build does not provide it, preferring instead to pass arch-specific
CFLAGS etc explicitly. Switching on LLVM_HOST_TRIPLE is also an option,
but it breaks down when cross-compiling.

Differential Revision: https://reviews.llvm.org/D69523
2019-10-28 15:34:39 -07:00
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
Jason Molenda d6e9e99cec Change debugserver to use the brk #0 for breakpoints.
debugserver had been using an instruction that would work
for armv7 or aarch64 processes, but we don't have armv7 code
running on arm64 devices any more so this is unnecessary.

<rdar://problem/56133118>

llvm-svn: 374264
2019-10-10 00:12:05 +00:00
Davide Italiano 2b371fbedd [debugserver] Include the correct header.
<rdar://problem/55916729>

llvm-svn: 373957
2019-10-07 20:35:22 +00:00
Davide Italiano 68d01d9429 [debugserver] Don't link against Cocoa, it's not needed.
<rdar://problem/55916729>

llvm-svn: 373795
2019-10-04 21:51:35 +00:00
Raphael Isemann 91ad5398d1 [lldb] Fix that 'ninja clean' breaks the build by deleting debugserver_vers.c
Summary:
We mark debugserver_vers.c as a generated file in CMake. This means that when we run `ninja clean` we end up deleting that file,
but any following `ninja` invocation will fail due to the file missing. The file can't be generated as `ninja` doesn't know it has to
rerun CMake to create the file. Turns out that marking the output of configure_file as generated is wrong as explained in this bug report:
https://gitlab.kitware.com/cmake/cmake/issues/18032

This patch just removes that property. The only side effect of this seems to be that this file maybe shows up in your IDE when
opening our CMake project, but that seems like a small sacrifice.

This patch can be quickly tested by running `ninja clean ; ninja lldbDebugserverCommon`. Before this patch the build will fail
due to debugserver_vers.c missing.

Reviewers: JDevlieghere, labath

Reviewed By: labath

Subscribers: mgorny, abidh, lldb-commits

Tags: #lldb

Differential Revision: https://reviews.llvm.org/D68376

llvm-svn: 373723
2019-10-04 09:52:26 +00:00
Jonas Devlieghere 0b1b3c6068 [debugserver] Add --version/-V command line option to debugserver.
When not running under a TTY the output is buffered and not flushed
before debugserver exits which makes it impossible to parse the version
string. This adds a -V/--version command that just prints the version to
stdout and exits with an exit code zero.

Differential revision: https://reviews.llvm.org/D68156

llvm-svn: 373127
2019-09-27 21:26:44 +00:00
Jonas Devlieghere cb4cda2d45 [CMake] Copy over the system debugserver when using LLDB_USE_SYSTEM_DEBUGSERVER
r366433 broke support for the system debugserver. Although the change
was well-intended, it (presumably) unintentionally removed the logic to
copy over the debugserver. As a result, even with
LLDB_USE_SYSTEM_DEBUGSERVER enabled, we ended up building, signing and
using the just-built debugserver.

This patch partially recovers the old behavior: when
LLDB_USE_SYSTEM_DEBUGSERVER is set we don't build debugserver and just
copy over the system one.

Differential revision: https://reviews.llvm.org/D67991

llvm-svn: 372786
2019-09-24 22:39:04 +00:00
Jim Ingham 6ca76ceb63 Fix a thinko in handling the QSetLogging packet.
The comparison against LOG_MEMORY shortcut all the LOG_MEMORY_*
log channels.  It has to come last.

llvm-svn: 371560
2019-09-10 21:58:22 +00:00
Adrian Prantl 2461061168 Upstream macCatalyst support in debugserver and the macOS dynamic loader
plugin.

Unfortunately the test is currently XFAILed because of missing changes
to the clang driver.

Differential Revision: https://reviews.llvm.org/D67124

llvm-svn: 370931
2019-09-04 17:23:15 +00:00
Frederic Riss cc5b509b9e Workaround TestConcurrentMany* flakiness in a more pricipled way
The flakiness on our local machines seems to come for a race in the kernel
between task_suspend and the creation of the Mach exceptions for the threads
that hit breakpoints. The debugserver code is written with the assumption
that the kernel will be able to provide us with all the exceptions for a
given task once task_suspend returns. On machines with higher core counts,
this seems not to be the case. The first batch of exceptions we get after
task_suspend does not contain exceptions for all the threads that have hit
a breakpoint, thus they get misreprorted in the first stop packet.

Adding a 1ms timeout to the call that retrieves the batch of exceptions
seems to workaround the issue reliably on our machines, and it shoulnd't
impact standard debugging scenarios too much (a stop will incur an additional
1ms delay). We'll be talking to the kernel team to figure out the right
contract for those APIs.

This patch also reverts part of Jonas' previous workaround for the
issue (r370785).

llvm-svn: 370916
2019-09-04 16:13:12 +00:00
Jason Molenda fe64323fd5 Send error message on failed attach from debugerserver.
Instead of using a magic return error code from debugserver to
indicate that an attach failed because of SIP being enabled in
RNBRemote::HandlePacket_v, use the extended error reporting that
Pavel added to lldb/lldb-server in https://reviews.llvm.org/D45573


<rdar://problem/39398385> 

llvm-svn: 369990
2019-08-27 00:08:27 +00:00
Jonas Devlieghere 83ee8d4463 [debugserver] Switch back to std::once_flag
We cannot use llvm::once_flag in debugserver because doesn't link
against llvm.

llvm-svn: 369621
2019-08-22 03:48:19 +00:00
Davide Italiano 0a8e634b3b [lldb] Replace std::once_flag with llvm::once_flag.
Summary:
The former seems like it's not working on some platforms.
All the other uses use `llvm::`, so, let's change for consistency.

Reviewers: jasonmolenda, friss

Subscribers: lldb-commits

Tags: #lldb

Differential Revision: https://reviews.llvm.org/D66566

llvm-svn: 369618
2019-08-22 03:12:49 +00:00
Jonas Devlieghere d35b42f20a [NFC] Return llvm::StringRef from StringExtractor::GetStringRef.
This patch removes the two variant of StringExtractor::GetStringRef that
return (non-)const references to std::string. The non-const one was
being abused to reinitialize the StringExtractor and its uses are
replaced by calls to the copy asignment operator. The const variant was
refactored to return an actual llvm::StringRef.

llvm-svn: 369493
2019-08-21 04:55:56 +00:00
Jonas Devlieghere 7483005c59 [NFC] Remove unused function GetHexWithFixedSize
The implementation of this function was obviously incorrect, as the
result variable was never used. This led me to check if it was actually
used anywhere, which came back negative.

llvm-svn: 369492
2019-08-21 04:55:53 +00:00
Stefan Granitz f241001793 [lldb][CMake] Workaround debugserver code-signing issue in generated Xcode project
Summary:
Explicitly code-sign the LLDB.framework copy of debugserver in the build-tree. This is necessary, because the Xcode-specific logic in `llvm_codesign` [1] has the side-effect that Xcode code-signs after post-build steps (here: after copying debugserver over into the framework). The special case for Xcode was necessary to avoid double-signing errors in the past (see D55116 and D55816).

[1] https://github.com/llvm/llvm-project/blob/36fb93982f0e/llvm/cmake/modules/AddLLVM.cmake#L1676

Reviewers: jingham, davide, JDevlieghere, teemperor

Reviewed By: JDevlieghere

Subscribers: beanz, mgorny, lldb-commits, #lldb

Tags: #lldb

Differential Revision: https://reviews.llvm.org/D65566

llvm-svn: 368151
2019-08-07 11:02:04 +00:00
Jason Molenda 6cebeafac3 Upstream a few small Apple changes to debugserver - arm64_32, Catalyst
Adrian's changes to support Catalyst processes and my
changes to support debugserver running on an arm64_32
device (Apple Watch Series 4, which uses an IPL32 model
on arm64 cpus).

llvm-svn: 368118
2019-08-07 02:06:06 +00:00
Stefan Granitz e8bffd3ff0 [lldb] Configure debugserver_vers.c from CMake
llvm-svn: 366932
2019-07-24 17:28:24 +00:00
Jonas Devlieghere 63b921f01d Remove Xcode project remnants
llvm-svn: 366745
2019-07-22 21:51:04 +00:00
Stefan Granitz f44d7c3f9f [NFC] Remove indent after r366433
llvm-svn: 366560
2019-07-19 10:20:35 +00:00
Stefan Granitz 0c4948455d [CMake] Always build debugserver on Darwin and allow tests to use the system's one
Summary:
We can always build debugserver, but we can't always sign it to be useable for testing. `LLDB_USE_SYSTEM_DEBUGSERVER` should only tell whether or not the system debugserver should be used for testing.
The old behavior complicated the logic around debugserver a lot. The new logic sorts out most of it.

Please note that this patch is in early stage and needs some more testing. It should not affect platfroms other than Darwin. It builds on Davide's approach to validate the code-signing identity at configuration time.

What do you think?

Reviewers: xiaobai, JDevlieghere, davide, compnerd, friss, labath, mgorny, jasonmolenda

Reviewed By: JDevlieghere

Subscribers: lldb-commits, #lldb

Tags: #lldb

Differential Revision: https://reviews.llvm.org/D64806

llvm-svn: 366433
2019-07-18 13:30:37 +00:00
Stefan Granitz 110f97632e [CMake] `install-distribution` for LLDB on Darwin
Summary:
There's a number of requirements for installing LLDB on macOS that are untypical for LLVM projects: use special install-prefix for LLDB.framework, ship headers and tools as framework resources, patch RPATHs, externalize debug-info to dSYM's and strip binaries with `-ST`. For some of it we could use `llvm_externalize_debuginfo()` in the past and just add special cases. However, this complicates the code for all projects and comes with the major drawback, that it adds all these actions at build-time, i.e. dSYM creation and stripping take a lot of time and don't make sense at build-time.

LLVM's distribution mechanism (https://llvm.org/docs/BuildingADistribution.html) appears to be the natural candidate to install LLDB. Based on D64399 (enable in standalone builds), this patch integrates framework installation with the distribution mechanism and adds custom stripping flags and dSYM creation at install-time. Unlike the abandoned D61952, it leaves build-tree binaries untouched, so there's no side-effects on testing. Potential install-order issues must be handled externally.

Please let me know what you think, while I run a few more tests and add remarks+documentation.

Reviewers: xiaobai, compnerd, JDevlieghere, davide, labath, mgorny

Reviewed By: xiaobai, JDevlieghere

Subscribers: lldb-commits, #lldb

Tags: #lldb

Differential Revision: https://reviews.llvm.org/D64408

llvm-svn: 365617
2019-07-10 11:09:29 +00:00
Davide Italiano 97017a8ef9 [CMake] Check that a certificate for lldb is present at build time.
Reviewers: JDevlieghere, sgraenitz, aprantl, friss

Subscribers: mgorny, lldb-commits

Tags: #lldb

Differential Revision: https://reviews.llvm.org/D63745

llvm-svn: 364334
2019-06-25 17:13:24 +00:00
Stefan Granitz a866d3b2ee [CMake] Two extra FOLDER properties for debugserver
llvm-svn: 363171
2019-06-12 14:46:30 +00:00
Stefan Granitz 5dc9036746 [CMake] LLDB.framework tools handling
Summary:
Modify the way LLDB.framework tools are collected. This allows for better fine-tuning of the install behavior downstream. Each target calls `lldb_add_to_framework()` individually. When entering the function, the target exists and we can tweak its very own post-build and install steps. This was not possible with the old `LLDB_FRAMEWORK_TOOLS` approach.

No function change otherwise.
This is a reduced follow-up from the proposal in D61952.

Reviewers: xiaobai, compnerd, JDevlieghere

Reviewed By: JDevlieghere

Subscribers: clayborg, friss, ki.stfu, mgorny, lldb-commits, labath, #lldb

Tags: #lldb

Differential Revision: https://reviews.llvm.org/D62472

llvm-svn: 361946
2019-05-29 11:26:06 +00:00
Stefan Granitz a3388e5f9e [CMake] Folder structure for generated Xcode project to cover more targets
llvm-svn: 361799
2019-05-28 09:29:05 +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
J. Ryan Stinnett b4cb7d8045 [NFC] Add blank line (test commit)
llvm-svn: 361555
2019-05-23 21:13:50 +00:00
Fangrui Song 1d846e1a4d Delete unnecessary copy ctors
llvm-svn: 361358
2019-05-22 08:38:23 +00:00
Jonas Devlieghere 4c1d6ee83d Replace assert with static_assert here applicable.
Replaces assert() with static_assert() if the condition is can be
evaluated at compile time.

llvm-svn: 360753
2019-05-15 05:39:41 +00:00
Jonas Devlieghere c18740976e Mark private unimplemented functions as deleted
Applies modernize-use-equals-delete to the LLDB code base and removes
the now redundant comments.

llvm-svn: 360751
2019-05-15 05:31:14 +00:00
Fangrui Song efe8e7e36d typedef enum -> enum
Reviewed By: labath

Differential Revision: https://reviews.llvm.org/D61883

llvm-svn: 360654
2019-05-14 08:55:50 +00:00
Fangrui Song b0e54cbcdf Fix file names in file headers. NFC
llvm-svn: 360554
2019-05-13 04:42:32 +00:00
Frederic Riss b47d356093 [debugserver] Relax the codesigning identity check
In an effort to help new LLDB developers, we added checks and messaging around
the selection of your codesigning identity on macOS. While helpful, it is not
actually correct. It's perfectly valid to codesign with an identity that is
not named lldb_codesign. Currently this fails the build.

This patch keeps a warning that informs developers how to setup lldb_codesign
and how to pass it to cmake, but it allows the build to proceed with a
different identity.

llvm-svn: 358525
2019-04-16 20:54:42 +00:00
Jonas Devlieghere 8b3af63b89 [NFC] Remove ASCII lines from comments
A lot of comments in LLDB are surrounded by an ASCII line to delimit the
begging and end of the comment.

Its use is not really consistent across the code base, sometimes the
lines are longer, sometimes they are shorter and sometimes they are
omitted. Furthermore, it looks kind of weird with the 80 column limit,
where the comment actually extends past the line, but not by much.
Furthermore, when /// is used for Doxygen comments, it looks
particularly odd. And when // is used, it incorrectly gives the
impression that it's actually a Doxygen comment.

I assume these lines were added to improve distinguishing between
comments and code. However, given that todays editors and IDEs do a
great job at highlighting comments, I think it's worth to drop this for
the sake of consistency. The alternative is fixing all the
inconsistencies, which would create a lot more churn.

Differential revision: https://reviews.llvm.org/D60508

llvm-svn: 358135
2019-04-10 20:48:55 +00:00
Jason Molenda 9d760a0a76 Change the logging on ptrace(PT_KILL) in MachProcess::Kill to log
if LOG_PROCESS is enabled or if there was an error making that call.

<rdar://problem/49036508> 

llvm-svn: 356626
2019-03-20 22:59:16 +00:00
Adrian Prantl f05b42e960 Bring Doxygen comment syntax in sync with LLVM coding style.
This changes '@' prefix to '\'.

llvm-svn: 355841
2019-03-11 17:09:29 +00:00
Frederic Riss fcda044d22 [debugserver] Fix IsUserReady thread filtering
Summary:
In 2010 (r118866), filtering code was added to debugserver to avoid reporting threads
that were "not ready to be displayed to the user". This code inspects the thread's
state and discards threads marked 'uninterruptible'. Turns out, this state is pretty
common and not only a characterisitic of 'user-readiness'. This filtering was tracked
down as the source of the flakiness of TestQueues and TestConcurrent* with the symptom
of missing threads.

We discussed with the kernel team and there should be no need for us to filter the
restult of task_threads(). Everything that is returned from there can be examined.
So I went on and tried to remove the filtering completely. This produces other test
failures, where we were reporting more theads than expected. Always threads that had
been terminated, but weren't removed from the task bookkeeping structures yet. Those
threads always had a PC of 0.

This patch changes the heuristic to make the filtering a little less strict and only
rejects threads that are 'uninteruptible' *and* have a PC of 0. This has proven to be
solid in my testing.

Reviewers: jasonmolenda, clayborg, jingham

Subscribers: jdoerfert, lldb-commits

Differential Revision: https://reviews.llvm.org/D58912

llvm-svn: 355555
2019-03-06 21:56:14 +00:00
Jason Molenda 7cdaf1e06b Update com.apple.diagnosticd.diagnostic entitlement
name to the newer com.apple.private.logging.diagnostic.

<rdar://problem/47183116> 

llvm-svn: 355170
2019-03-01 03:34:51 +00:00
Jason Molenda 461c416878 One more fix while I'm looking at this - remove the
unused IsSBProcess method, and have IsFBSProcess
return false if we don't have API that we can use to
make that determination, so we'll try other API
if we can.

llvm-svn: 354289
2019-02-18 22:18:11 +00:00
Jason Molenda 870c0a648b Ah, misunderstood Jonas' feedback - fix this so we'll
do the right thing when both API are available.  We
want to try both of them if the first one fails.

llvm-svn: 354288
2019-02-18 22:13:34 +00:00
Jason Molenda 5044316d16 Clean up an unused variable warning when building this for
mac native.

llvm-svn: 354287
2019-02-18 22:10:23 +00:00
Jason Molenda 3bf883eac9 Add some unconditional logging on the failure points when attaching
to a process so we'll always get messages in the console logs.  

Also make the "is frontboard process" / "is backboard process"
determination lazy, specifically take it out of the
MachProcess::AttachForDebug codepath when we are attaching to a
process, to simplify attaching.

<rdar://problem/47982516> 
<rdar://problem/48060134> 

llvm-svn: 354181
2019-02-15 22:39:30 +00:00
Jonas Devlieghere d5b440369d Replace 'ap' with 'up' suffix in variable names. (NFC)
The `ap` suffix is a remnant of lldb's former use of auto pointers,
before they got deprecated. Although all their uses were replaced by
unique pointers, some variables still carried the suffix.

In r353795 I removed another auto_ptr remnant, namely redundant calls to
::get for unique_pointers. Jim justly noted that this is a good
opportunity to clean up the variable names as well.

I went over all the changes to ensure my find-and-replace didn't have
any undesired side-effects. I hope I didn't miss any, but if you end up
at this commit doing a git blame on a weirdly named variable, please
know that the change was unintentional.

llvm-svn: 353912
2019-02-13 06:25:41 +00:00
Jonas Devlieghere 796ac80b86 Use std::make_shared in LLDB (NFC)
Unlike std::make_unique, which is only available since C++14,
std::make_shared is available since C++11. Not only is std::make_shared
a lot more readable compared to ::reset(new), it also performs a single
heap allocation for the object and control block.

Differential revision: https://reviews.llvm.org/D57990

llvm-svn: 353764
2019-02-11 23:13:08 +00:00
Adrian Prantl 238ce2128c Silence fallthrough warnings in debugserver.
llvm-svn: 353468
2019-02-07 21:22:38 +00:00
Chandler Carruth 2946cd7010 Update the file headers across all of the LLVM projects in the monorepo
to reflect the new license.

We understand that people may be surprised that we're moving the header
entirely to discuss the new license. We checked this carefully with the
Foundation's lawyer and we believe this is the correct approach.

Essentially, all code in the project is now made available by the LLVM
project under our new license, so you will see that the license headers
include that license only. Some of our contributors have contributed
code under our old license, and accordingly, we have retained a copy of
our old license notice in the top-level files in each project and
repository.

llvm-svn: 351636
2019-01-19 08:50:56 +00:00
Alex Langford cb1c467edb [CMake] Prevent lldbDebugserverCommon from building if you disable debugserver builds
Summary:
The flags `LLDB_USE_SYSTEM_DEBUGSERVER` and `LLDB_NO_DEBUGSERVER` were
introduced to the debugserver build. If one of these two flags are set, then we
do not build and sign debugserver. However I noticed that we were still building
the lldbDebugserverCommon and lldbDebugserverCommon_NonUI libraries regardless
of whether or not these flags were set. I don't believe we should be building
these libraries unless we are building and signing debugserver.

Reviewers: sgraenitz, davide, JDevlieghere, beanz, vsk, aprantl, labath

Subscribers: mgorny, jfb, lldb-commits

Differential Revision: https://reviews.llvm.org/D56763

llvm-svn: 351496
2019-01-17 23:14:04 +00:00
Alex Langford 76cb3089de [debugserver][CMake] Remove commented out line
This has been commented out since rL300111
(commit d742d081f3a1e7412cc609765139ba32d597ac15). Looks like it was
committed as a commented out line, so I'm removing it.

llvm-svn: 351263
2019-01-15 22:27:59 +00:00
Stefan Granitz f126ce6881 [CMake] Revised LLDB.framework builds
Summary:
Add features to LLDB CMake builds that have so far only been available in Xcode. Clean up a few inconveniences and prepare further improvements.

Options:
* `LLDB_FRAMEWORK_BUILD_DIR` determines target directory (in build-tree)
* `LLDB_FRAMEWORK_INSTALL_DIR` **only** determines target directory in install-tree
* `LLVM_EXTERNALIZE_DEBUGINFO` allows externalized debug info (dSYM on Darwin, emitted to `bin`)
* `LLDB_FRAMEWORK_TOOLS` determines which executables will be copied to the framework's Resources (dropped symlinking, removed INCLUDE_IN_SUITE, removed dummy targets)

Other changes:
* clean up `add_lldb_executable()`
* include `LLDBFramework.cmake` from `source/API/CMakeLists.txt`
* use `*.plist.in` files, which are typical for CMake and independent from Xcode
* add clang headers to the framework bundle

Reviewers: xiaobai, JDevlieghere, aprantl, davide, beanz, stella.stamenova, clayborg, labath

Reviewed By: aprantl

Subscribers: friss, mgorny, lldb-commits, #lldb

Differential Revision: https://reviews.llvm.org/D55328

llvm-svn: 350391
2019-01-04 12:46:50 +00:00
Stefan Granitz d0dc161f62 [CMake] Move debugserver options to separate debugserverConfig.cmake
Summary:
One place for debugserver options, analog to LLDBConfig for LLDB options (see D55317). It was discussed in earlier reviews already, e.g. D55013.

Reviewers: JDevlieghere, aprantl, xiaobai

Reviewed By: aprantl, xiaobai

Subscribers: mgorny, lldb-commits, #lldb

Differential Revision: https://reviews.llvm.org/D55320

llvm-svn: 350390
2019-01-04 12:46:38 +00:00
Stefan Granitz 90aeb4c8d9 [CMake] Streamline code signing for debugserver #2
Summary:
Major fixes after D54476 (use Diff1 as base for comparison to see only recent changes):
* In standalone builds target directory for debugserver must be LLDB's bin, not LLVM's bin
* Default identity for code signing must not force-override LLVM_CODESIGNING_IDENTITY globally

We have a lot of cases, make them explicit:

* ID used for code signing (debugserver and in tests):
** `LLDB_CODESIGN_IDENTITY` if set explicitly, or otherwise
** `LLVM_CODESIGNING_IDENTITY` if set explicitly, or otherwise
** `lldb_codesign` as the default

* On Darwin we have a debugserver target that:

* On other systems, the debugserver target is not defined, which is equivalent to **[3A]**

Common configurations on Darwin:
* **[1A]** `cmake -GNinja ../llvm` builds debugserver from source and signs with `lldb_codesign`, no code signing for other binaries (prints status: //lldb debugserver: /path/to/bin/debugserver//)
* **[1A]** `cmake -GNinja -DLLVM_CODESIGNING_IDENTITY=- -DLLDB_CODESIGN_IDENTITY=lldb_codesign ../llvm` builds debugserver from source and signs with `lldb_codesign`, ad-hoc code signing for other binaries (prints status: //lldb debugserver: /path/to/bin/debugserver//)
* **[2A]** `cmake -GNinja -DLLVM_CODESIGNING_IDENTITY=- -DLLDB_USE_SYSTEM_DEBUGSERVER=ON ../llvm` copies debugserver from system, ad-hoc code signing for other binaries (prints status: //Copy system debugserver from: /path/to/system/debugserver//)
* **[2B]** `cmake -GNinja -DLLVM_CODESIGNING_IDENTITY=- ../llvm` same, but prints additional warning: //Cannot code sign debugserver with identity '-'. Will fall back to system's debugserver. Pass -DLLDB_CODESIGN_IDENTITY=lldb_codesign to override the LLVM value for debugserver.//
* **[3A]** `cmake -GNinja -DLLVM_CODESIGNING_IDENTITY=- -DLLDB_NO_DEBUGSERVER=ON ../llvm` debugserver not available (prints status: //lldb debugserver will not be available)//

Reviewers: JDevlieghere, beanz, davide, vsk, aprantl, labath

Reviewed By: JDevlieghere, labath

Subscribers: mgorny, #lldb, lldb-commits

Differential Revision: https://reviews.llvm.org/D55013

llvm-svn: 350388
2019-01-04 12:46:30 +00:00
Jonas Devlieghere 8d20cfdfc6 [NFC] Replace `compare` with (in)equality operator where applicable.
Using compare is verbose, bug prone and potentially inefficient (because
of early termination). Replace relevant call sites with the (in)equality
operator.

llvm-svn: 349972
2018-12-21 22:46:10 +00:00
Jason Molenda 681f6c2f55 Un-conditionalize use of libcompression. debugserver only builds
on Darwin systems and libcompression has been in the OS for over
three years. 

Remove use of / linking to zlib.  We'll always have libcompression
available now.

Create a scratch buffer via compression_encode_scratch_buffer_size()
and use it in calls to compression_encode_buffer() to avoid 
compression_encode_buffer having to malloc & free a scratch buffer
on each call.  

Tested by forcing compression to be enabled on macos native (normally
only enabled on iOS et al devices), running the testsuite.

<rdar://problem/41601084>

llvm-svn: 349553
2018-12-18 22:21:48 +00:00
Jonas Devlieghere a6682a413d Simplify Boolean expressions
This patch simplifies boolean expressions acorss LLDB. It was generated
using clang-tidy with the following command:

run-clang-tidy.py -checks='-*,readability-simplify-boolean-expr' -format -fix $PWD

Differential revision: https://reviews.llvm.org/D55584

llvm-svn: 349215
2018-12-15 00:15:33 +00:00
Stefan Granitz 10c1116c09 [CMake] Fix standalone build for debugserver on macOS
Summary:
Quick-fix to avoid CMake config issue:
```
CMake Error at /path/to/lldb/cmake/modules/AddLLDB.cmake:116 (add_dependencies):
  Cannot add target-level dependencies to non-existent target "lldb-suite".
```

Reviewers: xiaobai, beanz

Subscribers: mgorny, lldb-commits

Differential Revision: https://reviews.llvm.org/D55032

llvm-svn: 347869
2018-11-29 14:51:49 +00:00
Davide Italiano 3bd249018c Revert "[CMake] Streamline code signing for debugserver and pass entitlements to extended llvm_codesign"
It breaks the lldb cmake bots.

llvm-svn: 347619
2018-11-27 00:25:49 +00:00
Stefan Granitz 6e6b4ac18e [CMake] Streamline code signing for debugserver and pass entitlements to extended llvm_codesign
Summary:
Use llvm_codesign to sign debugserver with entitlements.
Set global LLVM_CODESIGNING_IDENTITY from LLDB_CODESIGN_IDENTITY (if given).
Pass through ENTITLEMENTS from add_lldb_executable to add_llvm_executable.
Handle reconfigurations correctly.

We have a lot of cases, make them explicit:

(1) build and sign debugserver, if all conditions apply:
* LLDB_NO_DEBUGSERVER=OFF (default)
* On Darwin: LLDB_USE_SYSTEM_DEBUGSERVER=OFF (default)
* On Darwin: LLVM_CODESIGNING_IDENTITY == lldb_codesign

(2) use system debugserver, if on Darwin and any of:
* LLDB_USE_SYSTEM_DEBUGSERVER=ON and found on system (explicit case)
* LLVM_CODESIGNING_IDENTITY != lldb_codesign and found on system (fallback case)

(3) debugserver will not be available, in case of:
* LLDB_NO_DEBUGSERVER=ON
* On Darwin: LLVM_CODESIGNING_IDENTITY != lldb_codesign and not found on system

(4) error state, in case of:
* LLDB_USE_SYSTEM_DEBUGSERVER=ON and not found on system
* LLDB_USE_SYSTEM_DEBUGSERVER=ON and LLDB_NO_DEBUGSERVER=ON

Reviewers: xiaobai, beanz, vsk, JDevlieghere

Subscribers: mgorny, lldb-commits, llvm-commits

Differential Revision: https://reviews.llvm.org/D54476

llvm-svn: 347305
2018-11-20 14:10:33 +00:00
Jonas Devlieghere ceff6644bb Remove header grouping comments.
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
2018-11-11 23:17:06 +00:00
Jonas Devlieghere 672d2c1255 Remove comments after header includes.
This patch removes the comments following the header includes. They were
added after running IWYU over the LLDB codebase. However they add little
value, are often outdates and burdensome to maintain.

Differential revision: https://reviews.llvm.org/D54385

llvm-svn: 346625
2018-11-11 23:16:43 +00:00
Jason Molenda a9796ede39 Enable listening for EXC_RESOURCE events, and format mach
event as a thread stop reason if we receive one, using 
some macros to decode the payload.  

Patch originally written by Fred Riss, with a few small changes
by myself.

Writing a test for this is a little tricky because the 
mach exception data interpretation relies on header macros
or function calls - it may change over time and writing
a gdb_remote_client test for this would break as older 
encoding interpretation is changed.  I'll tak with Fred
about this more, but neither of us has been thrilled with
the kind of tests we could write for it.

<rdar://problem/13097323>, <rdar://problem/40144456> 

llvm-svn: 346571
2018-11-10 00:14:14 +00:00
Jason Molenda a1050973ed Remove llvm include from debugserver, change
LLVM_FALLTHROUGH's to [[clang::fallthrough]] -
debugserver is only ever compiled on darwin
systems with clang.

llvm-svn: 346553
2018-11-09 20:31:41 +00:00
Adrian Prantl 567906d8c7 Add missing include
llvm-svn: 346527
2018-11-09 17:58:05 +00:00
Adrian Prantl 69cf5571e3 Add missing include
llvm-svn: 346525
2018-11-09 17:44:20 +00:00
Adrian Prantl 96d37cf537 Annotate switch with LLVM_FALLTHROUGH
llvm-svn: 346519
2018-11-09 17:11:17 +00:00
Nathan Lanza 5652cd3fe9 Remove working directory for debugserver code signing target
Summary:
LLVM puts output binaries in
`${CMAKE_CURRENT_BINARY_DIR}/${CMAKE_CFG_INTDIR}/bin`. This chunk of
code left out the `${CMAKE_CFG_INTDIR}`. Ultimately, the code signing target
does not need a working directory anyways, so it's safe to just remove it.

Reviewers: sas, xiaobai, beanz

Reviewed By: beanz

Subscribers: mgorny

Differential Revision: https://reviews.llvm.org/D53959

llvm-svn: 346281
2018-11-06 23:54:52 +00:00
Jason Molenda b0d33e9b3c Re-instate a bit of code that was commented out in r188246 which
reads an ObjectFileMachO's string table in one chunk.  Originally
this was commented out because binaries in the system's shared cache
all share a mega-string table and so reading the entire mega-strtab
for each binary was a performance problem.

In the reinstated code, I add a check that the binary we're reading
from memory is not in the shared cache (there isn't a constant in
<mach-o/loader.h> for this bit yet; we hardcode the value in one
other place in ObjectFileMachO alread).  For binaries that we're
reading out of memory that are NOT in the shared cache, reading 
the string table in one chunk is a big performance improvement.

Also have debugserver send up the flags value for binaries in its
response to the jGetLoadedDynamicLibrariesInfos request.

NFC.

<rdar://problem/33604496> 

llvm-svn: 341511
2018-09-06 00:55:27 +00:00
Jason Molenda f04833f9ee Remove unnecessary entitlement in debugserver for iOS.
<rdar://problem/43631901> 

llvm-svn: 340877
2018-08-28 22:28:34 +00:00
Alex Langford 27510c18ad Introduce lldb-framework CMake target and centralize its logic
Summary:
In this patch I aim to do the following:

1) Create an lldb-framework target that acts as the target that handles generating LLDB.framework. Previously, liblldb acted as the target for generating the framework in addition to generating the actual lldb library. This made the target feel overloaded.
2) Centralize framework generation as much as it makes sense to do so.
3) Create a target lldb-suite, which depends on every tool and library that makes liblldb fully functional. One result of having this target is it makes tracking dependencies much clearer.

Differential Revision: https://reviews.llvm.org/D48060

llvm-svn: 334968
2018-06-18 18:27:16 +00:00
Jason Molenda 94405ddb95 Sort the files in the PBXBuildFile and PBXFileReference sections
of debugserver's xcode project file to reduce automerger issues
with the github swift repository of lldb where the order of these
entries has drifted significantly over the years.

llvm-svn: 334873
2018-06-15 23:32:37 +00:00
Frederic Riss 9745a0adb2 Add support for PLATFORM_*SIMULATOR
The toolchain in Xcode 10 uses a new LC_BUILD_VERSION entry to identify
simulator binaries. Add support for reading those to debugserver.

The exisitng test testing that code is currently failling when run
with Xcode 10, no need for a new test.

llvm-svn: 334784
2018-06-15 02:50:45 +00:00
Frederic Riss 2153c42358 Add an entitlement to debugserver
On macOS 10.14, debugserver needs to have an entitlement do be
allowed to debug processes. Adding this to both the Xcode and
cmake build system. This shouldn't have any impact on previous
OSs.

llvm-svn: 334772
2018-06-14 21:17:59 +00:00
Alex Langford 9391061fd7 Delete some dead code
llvm-svn: 334320
2018-06-08 21:13:26 +00:00
Bruce Mitchener 4ebdee0a59 Typo fixes.
Reviewers: javed.absar

Subscribers: ki.stfu, JDevlieghere, lldb-commits

Differential Revision: https://reviews.llvm.org/D47421

llvm-svn: 333399
2018-05-29 09:10:46 +00:00
Jonas Devlieghere 52721286b2 [CMake] Unify and relayer testing
This patch restructures part of LLDB's testing configuration:

1. I moved the test dependencies up the chain so every dotest dependency
   becomes a lit dependency as well. It wouldn't make sense for dotest to
   have other dependencies when it's being run by lit. Lit on the other
   hand can still specify extra dependencies.

2. I replaced as much generator expressions with variables as possible.
   This is consistent with the rest of LLVM and doesn't break generators
   that support multiple targets (MSVC, Xcode). This wasn't a problem
   before, but now we need to expand the dotest arguments in the lit
   configuration and there's only one test suite even with multiple
   targets.

3. I moved lldb-dotest into it's own directory under utils since there's
   no need anymore for it to located under `test/`.

Differential revision: https://reviews.llvm.org/D46334

llvm-svn: 331463
2018-05-03 16:54:10 +00:00
Adrian Prantl 6e9f77126b Silence compiler warning.
llvm-svn: 331375
2018-05-02 17:11:43 +00:00
Adrian Prantl d8f460e864 Enable AUTOBRIEF in doxygen configuration.
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
2018-05-02 16:55:16 +00:00
Frederic Riss 60b94c296e [debugserver] Fix the G packet handling.
Of course r331004 needed a counterpart on the write side.

llvm-svn: 331073
2018-04-27 19:59:42 +00:00
Frederic Riss 34ec0bfb5e [debugserver] Fix handling of the 'g' packet
LLDB doesn't use this packet so we never hit this, but it looks like
some other projects talk to debugserver and are hitting an assert
(https://github.com/derekparker/delve/issues/1015).

We had an off by 1 in the accounting of the FPU structure sizes.
I added a test that basically just check that 'g' doesn't return
an error (currently it assert in debug builds). I didn't make
it an lldb-server test because it looks like lldb-server doesn't
implement the g packet.

llvm-svn: 331004
2018-04-27 00:09:04 +00:00
Frederic Riss 05e8bc85e6 [debugserver] Return 'ios' instead of 'iphoneos' for the ostype.
When I merged the 2 codepaths that return an OS type, I hade
checked that the places accepting 'iphoneos' would also accept
'ios', but then I got it backwards and return 'iphoneos'.

We use this value to build triples, and there 'iphoneos' is
invalid.

This also makes the test slightly simpler.

llvm-svn: 330877
2018-04-25 22:12:12 +00:00
Davide Italiano e185dcf13d Revert "[debugserver] Remove dead function call. NFCI."
This reverts commit r330066 as it was wrong and the call was
not dead. Thanks to Fred for pointing this out.

llvm-svn: 330071
2018-04-13 21:26:32 +00:00
Davide Italiano 0bd55b187e [debugserver] Remove dead function call. NFCI.
llvm-svn: 330066
2018-04-13 20:47:25 +00:00
Frederic Riss cd90f878d4 [debugserver] Fix LC_BUILD_VERSION load command handling.
Summary:
In one of the 2 places the LC_BUILD_VERSION load command is handled, there
is a bug preventing us from actually handling them (the address where to
read the load command was not updated). This patch factors reading the
deployment target load commands into a helper and adds testing for the 2
code paths calling the helper.

The testing is a little bit complicated because the only times those load
commands matter is when debugging a simulator process. I added a new
decorator to check that a specific SDK is available. The actual testing was
fairly easy once I knew how to run a simulated process.

Reviewers: jasonmolenda, labath

Subscribers: lldb-commits

Differential Revision: https://reviews.llvm.org/D45298

llvm-svn: 329374
2018-04-06 04:28:12 +00:00
Frederic Riss fa37026db3 Prevent double release of mach ports
Summary:
When a MIG routine returns KERN_FAILURE, the demux function will release any OOL resources like ports. In this case, task_port and thread_port will be released twice, potentially resulting in use after free of the ports.

I don't think we can test this in any useful way
rdar://problem/37331387

Reviewers: jasonmolenda

Subscribers: lldb-commits

Differential Revision: https://reviews.llvm.org/D45011

llvm-svn: 328761
2018-03-29 03:49:41 +00:00
Jason Molenda 49b30d5ad5 Add the same new entitlement from r326399 to
the macos entitlement list.
<rdar://problem/38887712> 

llvm-svn: 328591
2018-03-26 23:13:17 +00:00
Jason Molenda f92817ab23 Rename remotectl_com.apple.internal.xpc.remote.debugserver.plist
to com.apple.internal.xpc.remote.debugserver.plist, not sure where
that remotectl_ prefix came from.

<rdar://problem/36751222> 

llvm-svn: 327922
2018-03-19 23:07:31 +00:00
Jason Molenda 695b211ce6 I didn't see that SocketAddress.cpp was already being pulled
in to debugserver; my re-addition resulted in duplicated
symbols.  Remove my added SocketAddress.cpp, and change the
original one to also be included for the debugserver-mini target.

llvm-svn: 327918
2018-03-19 22:55:19 +00:00
Jason Molenda cd063214b0 Add the ios-mini target to the top-level xcodeproj, which builds
the debugserver-mini target in debugserver.  Add a new plist
which needs to be installed for debugserver-mini.
<rdar://problem/36751222> 

llvm-svn: 327915
2018-03-19 22:04:45 +00:00
Vedant Kumar 51bc20527b [cmake] Copy system debugserver from the right place when only CommandLineTools
are installed

Instead of building debugserver when building lldb, I'd rather pass
LLDB_CODESIGN_IDENTITY="" to cmake and use the one already on my system.
However, on one of my machines I only have the CommandLineTools installed, and
so the hardcoded path to the system debugserver does not work for me.
Additionally, we should verify the LLDB framework exists on the machine before
trying to set the path to debugserver. This allows us to warn the user at
configure time that a system debugserver can't be found if they choose not to
build it themselves.

Patch by Alex Langford!

Differential Revision: https://reviews.llvm.org/D44507

llvm-svn: 327691
2018-03-16 03:31:16 +00:00
Jason Molenda 250524f7ed I added CFLAGS etc to one part of the project file I should not have.
llvm-svn: 327097
2018-03-09 01:43:18 +00:00
Jason Molenda 4b7ea1f33c More cleanups of debugserver project file and the libpmenergy/libpmsample
stuff.  Activate it when an internal SDK is selected.  Update the name of
the LDFLAGS to match the rest of the settings.  Update the default arch for 
ios builds.

llvm-svn: 327095
2018-03-09 01:37:37 +00:00
Jason Molenda fc7321197e Remove unneeded per-arch sdk specifications from debugserver xcode project file.
llvm-svn: 327088
2018-03-09 00:32:56 +00:00
Jason Molenda c13a14ac26 Remove the explicit dependency on libpmenergy and libpmsample.
llvm-svn: 327087
2018-03-09 00:28:51 +00:00
Jason Molenda a608510b13 Fixed two more sdk inconsistencies with the pmenergy stuff.
llvm-svn: 327085
2018-03-09 00:23:29 +00:00
Jason Molenda 917f5b9944 Three little cleanups in the debugserver xcode project file.
1. Link against libpmenergy and pmsample unconditionally.  It is available on 
macOS 10.10 ("Yosemite") and newer.  We're already linking against libcompression
unconditionally which is only available on macOS 10.11 & newer.

2. Change a few "sdk=macosx.internal"'s to sdk=macosx.

3. Clean up a few places where libcompression was being enabled inconsistently.


Note: the -DLLDB_ENERGY define is only set when building against the macosx.internal
SDK; it includes a header file that is not public.  We link against the dylibs
unconditionally for simplicity.

llvm-svn: 327084
2018-03-09 00:17:22 +00:00
Jason Molenda a1bd9508e0 Upstreaming avx512 register support in debugserver. These changes
were originally written by Chris Bieneman, they've undergone a
number of changes since then.

Also including the debugserver bridgeos support, another arm
environment that runs Darwin akin to ios.  These codepaths are
activated when running in a bridgeos environment which we're not
set up to test today.

There's additional (small) lldb changes to handle bridgeos binaries
that still need to be merged up.

Tested on a darwin system with avx512 hardware and without.

<rdar://problem/36424951> 

llvm-svn: 326756
2018-03-06 00:27:41 +00:00
Jason Molenda f50299fb87 Add another entitlement that we need for debugserver.
<rdar://problem/29855293> 

llvm-svn: 326399
2018-03-01 01:04:07 +00:00
Han Ming Ong 4142369204 Add ability to collect memory limit.
Reviewer: Jason Molenda

<rdar://problem/37686560>

llvm-svn: 326374
2018-02-28 22:18:45 +00:00