Commit Graph

436 Commits

Author SHA1 Message Date
Jonas Devlieghere 9916633997
[lldb] Fix modernize-use-override warnings (NFC)
Fix modernize-use-override warnings. Because this check is listed in
LLDB's top level .clang-tidy configuration, the check is enabled by
default and the resulting warnings show up in my editor.

I've audited the modified lines. This is not a blind change.
2022-06-17 15:08:02 -07:00
Jonas Devlieghere b945b62cf3
[lldb] Add a function to check if lldb is running in an interactive session
This patch adds a function to check if lldb is running in an interactive
debug session. Currently this API only works on macOS. It's expected to
be used in combination with Host::OpenFileInExternalEditor.

Differential revision: https://reviews.llvm.org/D124872
2022-05-03 15:11:57 -07:00
Jonas Devlieghere 5205c17749
[lldb] Fix escaping when launching in terminal with AppleScript
Fix escaping when launching in terminal with AppleScript. The invocation
we're building up is wrapped in single quotes when passed to bash and
wrapped in double quotes for AppleScript.

Here's an example invocation with the new escaping:

  tell application "Terminal"
    activate
          do script "/bin/bash -c 'arch -arch arm64 'darwin-debug'
            --unix-socket=/tmp/dL2jSh --arch=arm64 --working-dir
            \"/private/tmp/with spaces\" --disable-aslr --  \"foo\"
            \"bar\" \"baz\" ; echo Process exited with status $?';exit"
  end tell

Previously we were using unescaped single quotes which resulted in the
whole bash invocation being passed in pieces. That works most of the
time but breaks when you have a space in your current working directory
for example.

rdar://91870763

Differential revision: https://reviews.llvm.org/D124568
2022-04-27 16:37:42 -07:00
Shafik Yaghmour 24f9a2f53d [LLDB] Applying clang-tidy modernize-use-equals-default over LLDB
Applied modernize-use-equals-default clang-tidy check over LLDB.

This check is already present in the lldb/.clang-tidy config.

Differential Revision: https://reviews.llvm.org/D121844
2022-03-31 13:21:49 -07:00
Fred Riss 3427eddd9a
Adopt new dyld SPIs to introspect the shared cache.
With the shared cache getting split into multiple files, the current
way we created ObjectFileMachO objects for shared cache dylib images
will break.

This patch conditionally adopts new SPIs which will do the right
thing in the new world of multi-file caches.
2022-03-25 18:02:15 -07:00
Jason Molenda 99515783a6 Don't search for sim SDK path until we know we need it
When iterating over all Platforms looking for the best one, on a Mac the
Simulator platforms (iOS, tvOS, watchOS) will first find their SDK
directory by calling xcrun, then decide if they should activate or not.
When that SDK is absent, the call to xcrun to find it can be very slow.
This patch delays that directory search until we know we're activating
this platform, so non-simulator environments don't pay a perf cost ever
time they go through the list of platforms.

Differential Revision: https://reviews.llvm.org/D122373
rdar://87960090
2022-03-24 15:44:57 -07:00
Jonas Devlieghere 59eb705277
[lldb] Remove FileSystem::Initialize from VFS mapping
This patch removes the ability to instantiate the LLDB FileSystem class
based on a VFS overlay. This also removes the "hack" where we cast the
VFS to a RedirectingFileSystem to obtain the external path. You can
still instantiate a FileSystem with a VFS, but with the caveat that
operations that rely on the external path won't work.

Differential revision: https://reviews.llvm.org/D120923
2022-03-03 11:02:11 -08:00
Pavel Labath a85d3b66cb [lldb] Fix macos build for D120425 2022-02-24 12:47:43 +01:00
Pavel Labath 12c9c4a885 [lldb/host] Remove monitor_signals argument from process monitoring functions
All current callers set the argument to false. monitor_signals=true used
to be used in the Process plugins (which needed to know when the
debugged process gets a signal), but this implementation has several
serious issues, which means that individual process plugins now
orchestrate the monitoring of debugged processes themselves.

This allows us to simplify the implementation (no need to play with
process groups), and the interface (we only catch fatal events, so the
callback is always called just once).

Differential Revision: https://reviews.llvm.org/D120425
2022-02-24 11:12:59 +01:00
Pavel Labath f4568e1221 [lldb] Simplify HostThreadMacOSX
The class is using an incredibly elaborate setup to create and destroy
an NSAutoreleasePool object. We can do it in a much simpler way by
making those calls inside our thread startup function.

The only effect of this patch is that the pool gets released at the end
of the ThreadCreateTrampoline function, instead of slightly later, when
pthreads begin thread-specific cleanup. However, the key destruction
order is unspecified, so nothing should be relying on that.

I didn't find a specific reason for why this would have to be done that
way in git history. It seems that before D5198, this was thread-specific
keys were the only way an os implementation (in Host::ThreadCreated)
could attach some value to a thread.

Differential Revision: https://reviews.llvm.org/D120322
2022-02-23 14:25:59 +01:00
Pavel Labath d0810779b1 [lldb] Modernize ThreadLauncher
Accept a function object instead of a raw pointer. This avoids a bunch
of boilerplate typically needed to pass arguments to the thread
functions.

Differential Revision: https://reviews.llvm.org/D120321
2022-02-23 14:25:59 +01:00
Pavel Labath c34698a811 [lldb] Rename Logging.h to LLDBLog.h and clean up includes
Most of our code was including Log.h even though that is not where the
"lldb" log channel is defined (Log.h defines the generic logging
infrastructure). This worked because Log.h included Logging.h, even
though it should.

After the recent refactor, it became impossible the two files include
each other in this direction (the opposite inclusion is needed), so this
patch removes the workaround that was put in place and cleans up all
files to include the right thing. It also renames the file to LLDBLog to
better reflect its purpose.
2022-02-03 14:47:01 +01:00
Pavel Labath a007a6d844 [lldb] Convert "LLDB" log channel to the new API 2022-02-02 14:13:08 +01:00
Pavel Labath 0a39a9c2cb Modernize and simplify HostInfo::GetOSKernelDescription
Replace bool+by-ref argument with llvm::Optional, and move the common
implementation into HostInfoPOSIX. Based on my (simple) experiment,
the uname and the sysctl approach return the same value on MacOS, so
there's no need for a mac-specific implementation of this functionality.

Differential Revision: https://reviews.llvm.org/D112457
2021-10-26 11:17:02 +02:00
Pavel Labath a53978c95c [lldb] Remove a trailing \0 from the result of HostInfoMacOSX::GetOSBuildString
This has been in there since forever, but only started to matter once
40e4ac3e changed how we print the string.
2021-10-25 17:33:06 +02:00
Pavel Labath 8b8070e234 Host::GetOSBuildString 2021-10-22 12:59:58 +02:00
Pavel Labath 93c1b3caf0 [lldb] Remove some anonymous namespaces
.. and reduce the scope of others. They don't follow llvm coding
standards (which say they should be used only when the same effect
cannot be achieved with the static keyword), and they set a bad example.
2021-10-05 08:35:18 +02:00
Jonas Devlieghere fd2433e139 [lldb] Replace default bodies of special member functions with = default;
Replace default bodies of special member functions with = default;

$ run-clang-tidy.py -header-filter='lldb' -checks='-*,modernize-use-equals-default' -fix ,

https://clang.llvm.org/extra/clang-tidy/checks/modernize-use-equals-default.html

Differential revision: https://reviews.llvm.org/D104041
2021-07-02 11:31:16 -07:00
Raphael Isemann 355541a1b7 [lldb] Avoid using any shell when calling xcrun.
When we run `xcrun` we don't have any user input in our command so relying on
the user's default shell doesn't make a lot of sense. If the user has set the
system shell to a something that isn't supported yet (dash, ash) then we would
run into the problem that we don't know how to escape our command string.

This patch just avoids using any shell at all as xcrun is always at the same
path.

Reviewed By: aprantl, JDevlieghere, kastiglione

Differential Revision: https://reviews.llvm.org/D104653
2021-06-28 19:53:52 +02:00
Raphael Isemann 8a5165b3b9 [lldb][NFC] Remove some redundant semicolons on HostInfoMacOSX 2021-06-23 15:06:12 +02:00
Jonas Devlieghere 9494c510af [lldb] Use C++11 default member initializers
This converts a default constructor's member initializers into C++11
default member initializers. This patch was automatically generated with
clang-tidy and the modernize-use-default-member-init check.

$ run-clang-tidy.py -header-filter='lldb' -checks='-*,modernize-use-default-member-init' -fix

This is a mass-refactoring patch and this commit will be added to
.git-blame-ignore-revs.

Differential revision: https://reviews.llvm.org/D103483
2021-06-09 09:43:13 -07:00
Raphael Isemann 76e47d4887 [lldb][NFC] Use C++ versions of the deprecated C standard library headers
The C headers are deprecated so as requested in D102845, this is replacing them
all with their (not deprecated) C++ equivalent.

Reviewed By: shafik

Differential Revision: https://reviews.llvm.org/D103084
2021-05-26 12:46:12 +02:00
Jonas Devlieghere 479b672ff9 [lldb] Pretend host architecture is arm64 on AS
The arm64e architecture is a preview. On Apple Silicon, pretend the host
architecture is arm64.
2021-04-13 18:57:23 -07:00
Jonas Devlieghere 6dbea3efc5 [lldb] Add scoped timer to HostInfoMacOSX::GetXcodeSDKPath 2021-03-01 14:57:42 -08:00
Jonas Devlieghere 732534ed64 [lldb] s/TARGET_OS_EMBEDDED/TARGET_OS_IPHONE/
TARGET_OS_EMBEDDED is deprecated, use TARGET_OS_IPHONE and/or
TARGET_OS_SIMULATOR instead.
2021-02-11 20:40:59 -08:00
Jonas Devlieghere 98e50a7d4c [lldb] Honor the CPU type & subtype when launching on macOS
Honor the CPU type (and subtype) when launching the inferior on macOS.

Part of this functionality was thought to be no longer needed and
removed in 85bd436961, however it's still
needed, for example to launch binaries under Rosetta 2 on Apple Silicon.

This patch will use posix_spawnattr_setarchpref_np if available and
fallback to posix_spawnattr_setbinpref_np if not.

Differential revision: https://reviews.llvm.org/D95922
2021-02-03 13:42:00 -08:00
Jonas Devlieghere e3b0414b0e [lldb] Change the xcrun (fallback) logic in GetXcodeSDK
This changes the logic in GetXcodeSDK to find an SDK with xcrun. The
code now executes the following steps:

 1. If DEVELOPER_DIR is set in the environment, it invokes xcrun with
    the given developer dir. If this fails we stop and don't fall back.
 2. If the shlib dir is set and exists,it invokes xcrun with the
    developer dir corresponding to the shlib dir. If this fails we fall
    back to 3.
 3. We run xcrun without a developer dir.

The new behavior introduced in this patch is that we fall back to
running xcrun without a developer dir if running it based on the shlib
dir failed.

A situation where this matters is when you're running lldb from an Xcode
that has no SDKs and that is not xcode-selected. Based on lldb's shlib
dir pointing into this Xcode installation, it will do an xcrun with the
developer set to the Xcode without any SDKs which will fail. With this
patch, when that happens, we'll fall back to trying the xcode-selected
Xcode by running xcrun without a developer dir.

Differential revision: https://reviews.llvm.org/D88866
2020-10-06 15:55:06 -07:00
Jonas Devlieghere fa95e35593 [lldb] Pass -fno-objc-exceptions for objcxx targets
When compiling an Objective-C++ file, __has_feature(cxx_exceptions) will
return true with -fno-exceptions but without -fno-objc-exceptions. This
was causing LLVM_ENABLE_EXCEPTIONS to be defined for a subset of files.
2020-09-02 21:59:48 -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 249a1d4f1b [lldb] Add an option to inherit TCC permissions from parent.
Add an option that allows the user to decide to not make the inferior is
responsible for its own TCC permissions. If you don't make the inferior
responsible, it inherits the permissions of its parent. The motivation
is the scenario of running the LLDB test suite from an external hard
drive. If the inferior is responsible, every test needs to be granted
access to the external volume. When the permissions are inherited,
approval needs to be granted only once.

Differential revision: https://reviews.llvm.org/D85237
2020-08-05 10:08:28 -07:00
Jonas Devlieghere 041c7b84a4 [lldb/Host] Upstream macOS TCC code
Upstream the code for dealing with TCC introduced in macOS Mojave. This
will make the debuggee instead of the debugger responsible for the
privileges it needs.

Differential revision: https://reviews.llvm.org/D85217
2020-08-04 09:23:54 -07:00
Fred Riss 8113a8bb79 [lldb/ObjectFileMachO] Fetch shared cache images from our own shared cache
Summary:
On macOS 11, the libraries that have been integrated in the system
shared cache are not present on the filesystem anymore. LLDB was
using those files to get access to the symbols of those libraries.
LLDB can get the images from the target process memory though.

This has 2 consequences:
 - LLDB cannot load the images before the process starts, reporting
   an error if someone tries to break on a system symbol.
 - Loading the symbols by downloading the data from the inferior
   is super slow. It takes tens of seconds at the start of the
   debug session to populate the Module list.

To fix this, we can use the library images LLDB has in its own
mapping of the shared cache. Shared cache images are somewhat
special as their LINKEDIT segment is moved to the end of the cache
and thus the images are not contiguous in memory. All of this can
hidden in ObjectFileMachO.

This patch fixes a number of test failures on macOS 11 due to the
first problem described above and adds some specific unittesting
for the new SharedCache Host utilities.

Reviewers: jasonmolenda, labath

Subscribers: llvm-commits, lldb-commits

Tags: #lldb, #llvm

Differential Revision: https://reviews.llvm.org/D83023
2020-07-16 10:37:37 -07:00
Davide Italiano 47ac45332e [HostInfoMacOS] Parse correctly the triple for Apple Silicon.
Again, debugging doesn't work on the new platform without this, so
it's implicitly covered by the testsuite.
2020-06-24 16:37:21 -07:00
Davide Italiano b4fdddf971 [Apple Silicon] Debugging of process under Rosetta is supported.
Remove this early exit. It's vestigial from the ppc -> Intel transition,
but it doesn't apply anymore.
2020-06-24 12:25:01 -07:00
Davide Italiano 3c79212319 [Host] Check for TARGET_OS_EMBEDDED instead of listing architectures.
With the advent of Apple Silicon, checking for the architectures
specifically is not correct anymore. This code is only supposed to
run on embedded devices (iPhones et similia), so mark it accordingly.
2020-06-23 12:27:21 -07:00
Adrian Prantl ad4e7b9dc8 Fix an oversight in GetXcodeContentsDirectory()
Since FindXcodeContentsDirectoryInPath expects the *.app/Contents and
DEVELOPER_DIR is supposed to point to Xcode.app, we need to append the
Contents path first.

Differential Revision: https://reviews.llvm.org/D81290
2020-06-05 13:50:37 -07:00
Adrian Prantl f28177dbe8 Factor out GetEnvDeveloperDir() (NFC)
Differential Revision: https://reviews.llvm.org/D81289
2020-06-05 13:50:37 -07:00
Adrian Prantl 79daa3d896 Teach GetXcodeSDK to look in the Xcode that contains LLDB
instead of preferring the one chosen with xcode-select.

<rdar://problem/64000666>

Differential Revision: https://reviews.llvm.org/D81210
2020-06-05 11:59:22 -07:00
Adrian Prantl 3d7b926dd1 Move GetXcode*Directory into HostInfo (NFC)
These functions really don't belong into PlatformDarwin, since they
actualy query state of the Host and not of the remote platform.
2020-06-05 11:59:22 -07:00
Konrad Kleine eaebcbc679 [lldb] NFC remove DISALLOW_COPY_AND_ASSIGN
Summary:
This is how I applied my clang-tidy check (see
https://reviews.llvm.org/D80531) in order to remove
`DISALLOW_COPY_AND_ASSIGN` and have deleted copy ctors and deleted
assignment operators instead.

```
lang=bash
grep DISALLOW_COPY_AND_ASSIGN /opt/notnfs/kkleine/llvm/lldb -r -l | sort | uniq > files

for i in $(cat files);
do
  clang-tidy \
    --checks="-*,modernize-replace-disallow-copy-and-assign-macro" \
    --format-style=LLVM \
    --header-filter=.* \
    --fix \
    -fix-errors \
    $i;
done
```

Reviewers: espindola, labath, aprantl, teemperor

Reviewed By: labath, aprantl, teemperor

Subscribers: teemperor, aprantl, labath, emaste, sbc100, aheejin, MaskRay, arphaman, usaxena95, lldb-commits

Tags: #lldb

Differential Revision: https://reviews.llvm.org/D80543
2020-06-02 13:23:53 -04:00
Adrian Prantl a57a67c59b Fix a use-after-free in GetXcodeSDKPath
Introduced in https://reviews.llvm.org/D80595. Thanks Jonas for noticing!

Differential Revision: https://reviews.llvm.org/D80666
2020-05-27 14:27:16 -07:00
Adrian Prantl 3345521507 Also cache negative results in GetXcodeSDKPath (NFC)
This fixes a performance issue in the failure case.

rdar://63547920

Differential Revision: https://reviews.llvm.org/D80595
2020-05-27 12:26:04 -07:00
Adrian Prantl f0c08b7eac Move the Xcode SDK path caching to HostInfo
When debugging a remote platform, the platform you get from
GetPlatformForArchitecture doesn't inherit from PlatformDarwin.
HostInfoMacOSX seems like the right place to have a global store of
local paths.

Differential Revision: https://reviews.llvm.org/D79364
2020-05-06 13:43:50 -07:00
Adrian Prantl 79feafa514 Add an internal bit to the XcodeSDK class.
For developing the OS itself there exists an "internal" variant of
each SDK. This patch adds support for these SDK directories to the
XcodeSDK class.

Differential Revision: https://reviews.llvm.org/D78675
2020-04-24 12:55:53 -07:00
Adrian Prantl 1e05d7b3d3 Remap the target (Xcode) SDK directory to the host SDK directory.
This is mostly useful for Swift support; it allows LLDB to substitute
a matching SDK it shipped with instead of the sysroot path that was
used at compile time.

The goal of this is to make the Xcode SDK something that behaves more
like the compiler's resource directory, as in that it ships with LLDB
rather than with the debugged program. This important primarily for
importing Swift and Clang modules in the expression evaluator, and
getting at the APINotes from the SDK in Swift.

For a cross-debugging scenario, this means you have to have an SDK for
your target installed alongside LLDB. In Xcode this will always be the
case.

rdar://problem/60640017

Differential Revision: https://reviews.llvm.org/D76471
2020-04-06 15:51:30 -07:00
Vedant Kumar f203100ebe Reapply: [Host.mm] Check for the right macro instead of inlining it
Previously, this was reverted in bf65f19b becuase it checked whether
TARGET_OS_EMBEDDED is defined, but that macro is always defined.

Update the condition to check that TARGET_OS_OSX is true.
2020-04-01 15:23:07 -07:00
Davide Italiano 85bd436961 [Host] Remove some code that's not needed anymore.
Discussed offline with Jason.
2020-03-18 14:44:53 -07:00
Jonas Devlieghere 2451cbf07b [lldb/Reproducers] Intercept the FindProcesses API
This patch extends the reproducers to intercept calls to FindProcesses.
During capture it serializes the ProcessInstanceInfoList returned by the
API. During replay, it returns the serialized data instead of querying
the host.

The motivation for this patch is supporting the process attach workflow
during replay. Without this change it would incorrectly look for the
inferior on the host during replay and failing if no matching process
was found.

Differential revision: https://reviews.llvm.org/D75877
2020-03-13 09:31:35 -07:00
Jonas Devlieghere 638b06cf29 [lldb/Utility] Replace ProcessInstanceInfoList with std::vector. (NFCI)
Replace ProcessInstanceInfoList with std::vector<ProcessInstanceInfo>
and update the call sites.
2020-03-12 14:10:25 -07:00
Jonas Devlieghere cdc514e4c6 [lldb] Update header guards to be consistent and compliant with LLVM (NFC)
LLDB has a few different styles of header guards and they're not very
consistent because things get moved around or copy/pasted. This patch
unifies the header guards across LLDB and converts everything to match
LLVM's style.

Differential revision: https://reviews.llvm.org/D74743
2020-02-17 23:15:40 -08:00