Commit Graph

2012 Commits

Author SHA1 Message Date
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
kuperxu 8dd106028b [debugserver] Add platform cache support to improve performance.
The dyld SPI used by debugserver (_dyld_process_info_create) has become
much slower in macOS BigSur 11.3 causing a significant performance
regression when attaching. This commit mitigates that by caching the
result when calling the SPI to compute the platform.

Differential revision: https://reviews.llvm.org/D102833
2021-05-20 19:10:46 -07:00
Jason Molenda afee09751d [NFC] Add GetInferiorAddrSize method, unify code to compute
MachProcess.mm has a sequence to get the address size in
the inferior in three places; and I'm about to add a fourth
in a future patch.  Not a fan.
2021-05-13 00:47:58 -07:00
Jason Molenda 0c443e92d3 Add some warnings when debugserver is running in translation
A debugserver launched x86_64 cannot control an arm64/arm64e
process on an Apple Silicon system.  Warn when this situation
has happened and return an error for the most common case of
attach.  I think there will be refinements to this in the
future, but start out by making it easy to spot the problem
when it happens.

rdar://76630595
2021-05-12 22:18:24 -07:00
Brad Smith 3a62d4fde8 Fix typo, arvm7 -> armv7 2021-05-05 00:56:44 -04:00
Jonas Devlieghere 2d5d720df0 [debugserver] Include LLDB_VERSION_SUFFIX in debugserver version
The lack of a dot before the suffix is intentional, as the suffix itself
includes a dot or dash.

Differential revision: https://reviews.llvm.org/D101655
2021-05-03 15:05:32 -07:00
Jonas Devlieghere b535459d0a [debugserver] Use add_lldb_library instead of add_library
Use add_lldb_library to ensure debugserver inherits the defines set by
llvm and lldb.

Differential revision: https://reviews.llvm.org/D101596
2021-04-29 22:09:10 -07:00
Walter Erquinigo 1141ba677e [lldb-vscode] Follow up of D99989 - store some strings more safely
As a follow up of https://reviews.llvm.org/D99989#inline-953343, I'm now
storing std::string instead of char *. I know it might never break as char *,
but if it does, chasing that bug might be dauting.
Besides, I'm also checking of the strings gotten through the SB API are
null or not.
2021-04-29 18:37:44 -07:00
Michał Górny 6c37984eba [lldb] [gdb-remote server] Introduce new stop reasons for fork and vfork
Introduce three new stop reasons for fork, vfork and vforkdone events.
This includes server support for serializing fork/vfork events into
gdb-remote protocol.  The stop infos for the two base events take a pair
of PID and TID for the newly forked process.

Differential Revision: https://reviews.llvm.org/D100196
2021-04-24 11:08:33 +02:00
Benjamin Kramer edc869cb57 [lldb-vscode] Use a DenseMap to pacify overly aggressive linters
Some linters get rather upset upon seeing
`std::unordered_map<const char*`, because it looks like a map of
strings but isn't. lldb uses interned strings so this is not a problem.
DenseMap is a better data structure for this anyways, so use that
instead.
2021-04-22 13:07:39 +02:00
Walter Erquinigo 875654f897 Fix VSCode/TestOptions.test
Found by https://lab.llvm.org/buildbot/#/builders/96/builds/6936
2021-04-21 15:46:26 -07:00
Walter Erquinigo c4a83c4e69 Fix TestVSCode_runInTerminal
It failed in https://lab.llvm.org/buildbot/#/builders/68/builds/10912

And it was caused due to https://reviews.llvm.org/rG64f47c1e58a1
2021-04-21 15:20:47 -07:00
Walter Erquinigo c9a0754b44 [lldb-vscode] Distinguish shadowed variables in the scopes request
VSCode doesn't render multiple variables with the same name in the variables view. It only renders one of them. This is a situation that happens often when there are shadowed variables.
The nodejs debugger solves this by adding a number suffix to the variable, e.g. "x", "x2", "x3" are the different x variables in nested blocks.

In this patch I'm doing something similar, but the suffix is " @ <file_name:line>), e.g. "x @ main.cpp:17", "x @ main.cpp:21". The fallback would be an address if the source and line information is not present, which should be rare.

This fix is only needed for globals and locals. Children of variables don't suffer of this problem.

When there are shadowed variables
{F16182150}

Without shadowed variables
{F16182152}

Modifying these variables through the UI works

Reviewed By: clayborg

Differential Revision: https://reviews.llvm.org/D99989
2021-04-21 15:09:39 -07:00
Walter Erquinigo 64f47c1e58 [lldb-vscode] redirect stderr/stdout to the IDE's console
In certain occasions times, like when LLDB is initializing and
evaluating the .lldbinit files, it tries to print to stderr and stdout
directly. This confuses the IDE with malformed data, as it talks to
lldb-vscode using stdin and stdout following the JSON RPC protocol. This
ends up terminating the debug session with the user unaware of what's
going on. There might be other situations in which this can happen, and
they will be harder to debug than the .lldbinit case.

After several discussions with @clayborg, @yinghuitan and @aadsm, we
realized that the best course of action is to simply redirect stdout and
stderr to the console, without modifying LLDB itself. This will prove to
be resilient to future bugs or features.

I made the simplest possible redirection logic I could come up with. It
only works for POSIX, and to make it work with Windows should be merely
changing pipe and dup2 for the windows equivalents like _pipe and _dup2.
Sadly I don't have a Windows machine, so I'll do it later once my office
reopens, or maybe someone else can do it.

I'm intentionally not adding a stop-redirecting logic, as I don't see it
useful for the lldb-vscode case (why would we want to do that, really?).

I added a test.

Note: this is a simpler version of D80659. I first tried to implement a
RIIA version of it, but it was problematic to manage the state of the
thread and reverting the redirection came with some non trivial
complexities, like what to do with unflushed data after the debug
session has finished on the IDE's side.
2021-04-21 14:48:48 -07:00
Walter Erquinigo 79fbbeb412 [lldb-vscode] Add postRunCommands
This diff ass postRunCommands, which are the counterpart of the preRunCommands. TThey will be executed right after the target is launched or attached correctly, which means that the targets can assume that the target is running.

Differential Revision: https://reviews.llvm.org/D100340
2021-04-21 13:51:30 -07:00
Fangrui Song cdae6d7711 [lldb] Fix one leak in reproducer
Use a variable of static storage duration to reference an intentionally
leaked variable. A static data area is in the GC-set of various leak
checkers.

This fixes 3 `check-lldb-shell` tests in a `-DLLVM_USE_SANITIZER={Leaks,Address}` build,
e.g. `test/Shell/Reproducer/TestHomeDir.test`

Differential Revision: https://reviews.llvm.org/D100806
2021-04-19 19:39:10 -07:00
Jason Molenda 9d4415d01d Don't refer to allocation map entry after deallocating it
debugserver's MachTask::DeallocateMemory when removing an
allocate entry from our map (in resposne to an '_m' packet),
copy the size from the entry before removing it from the
map and then using the iterator to fix an ASAN error on
the bots when running TestGdbRemoteMemoryAllocation.py

rdar://76595998
2021-04-15 20:16:38 -07:00
Walter Erquinigo cc88d301a0 [lldb-vscode] Reduce chattiness of progress events
Progress events internally have a completed count and a total count, which can mean that for a job with 20000 total counts, then there will be 20000 events fired. Sending all these events to the IDE can break it. For example, debugging a huge binary resulted in around 50 million messages, which rendered the IDE useless, as it was spending all of its resources simply parsing messages and updating the UI.

A way to fix this is to send unique percentage updates, which are at most 100 per job, which is not much. I was able to debug that big target and confirm that only unique percentage notifications are sent. I can't write a test for this because the current test is flaky. I'll figure out later how to make the test reliable, but fixing this will unblock us from deploy a new version of lldb-vscode.

Differential Revision: https://reviews.llvm.org/D100443
2021-04-14 13:00:01 -07:00
Jonas Devlieghere e825effe9b [lldb] Build debugserver 2-way fat on AS
When compiling for arm, build debugserver 2 way fat with an arm64 and
arm64e slice. You can only debug arm64e processes using an arm64e
debugserver.
2021-04-13 19:55:13 -07:00
Jonas Devlieghere ae8a5c6852 [debugserver] Use class member initialization for RNBContext
Address Shafik Yaghmour's post commit code review feedback.
2021-04-13 10:39:27 -07:00
Jonas Devlieghere 8a5af9e284 [debugserver] Fix unintialized member variable
Caught by ubsan (__ubsan_handle_load_invalid_value_abort) when running
the unit tests.
2021-04-13 09:46:59 -07:00
Abhina Sreeskantharajan 82b3e28e83 [SystemZ][z/OS][Windows] Add new OF_TextWithCRLF flag and use this flag instead of OF_Text
Problem:
On SystemZ we need to open text files in text mode. On Windows, files opened in text mode adds a CRLF '\r\n' which may not be desirable.

Solution:
This patch adds two new flags

  - OF_CRLF which indicates that CRLF translation is used.
  - OF_TextWithCRLF = OF_Text | OF_CRLF indicates that the file is text and uses CRLF translation.

Developers should now use either the OF_Text or OF_TextWithCRLF for text files and OF_None for binary files. If the developer doesn't want carriage returns on Windows, they should use OF_Text, if they do want carriage returns on Windows, they should use OF_TextWithCRLF.

So this is the behaviour per platform with my patch:

z/OS:
OF_None: open in binary mode
OF_Text : open in text mode
OF_TextWithCRLF: open in text mode

Windows:
OF_None: open file with no carriage return
OF_Text: open file with no carriage return
OF_TextWithCRLF: open file with carriage return

The Major change is in llvm/lib/Support/Windows/Path.inc to only set text mode if the OF_CRLF is set.
```
  if (Flags & OF_CRLF)
    CrtOpenFlags |= _O_TEXT;
```

These following files are the ones that still use OF_Text which I left unchanged. I modified all these except raw_ostream.cpp in recent patches so I know these were previously in Binary mode on Windows.
./llvm/lib/Support/raw_ostream.cpp
./llvm/lib/TableGen/Main.cpp
./llvm/tools/dsymutil/DwarfLinkerForBinary.cpp
./llvm/unittests/Support/Path.cpp
./clang/lib/StaticAnalyzer/Core/HTMLDiagnostics.cpp
./clang/lib/Frontend/CompilerInstance.cpp
./clang/lib/Driver/Driver.cpp
./clang/lib/Driver/ToolChains/Clang.cpp

Reviewed By: MaskRay

Differential Revision: https://reviews.llvm.org/D99426
2021-04-06 07:23:31 -04:00
Jonas Devlieghere b7e2c2acb8 [lldb-vscode] Use LLVM's ScopeExit to ensure we always terminate the debugger
Make sure we always terminate the debugger by using a RAII object.

Differential revision: https://reviews.llvm.org/D99702
2021-03-31 21:41:59 -07:00
Jonas Devlieghere 54c3c2e828 [lldb-vscode] Consistently use return EXIT_SUCCESS and EXIT_FAILURE (NFC)
Consistently use return with EXIT_SUCCESS or EXIT_FAILURE instead of
mix-and-matching return, exit 0, 1 etc.

Differential revision: https://reviews.llvm.org/D99701
2021-03-31 21:41:59 -07:00
Walter Erquinigo 0b69756110 [trace][intel-pt] Implement trace start and trace stop
This implements the interactive trace start and stop methods.

This diff ended up being much larger than I anticipated because, by doing it, I found that I had implemented in the beginning many things in a non optimal way. In any case, the code is much better now.

There's a lot of boilerplate code due to the gdb-remote protocol, but the main changes are:

- New tracing packets: jLLDBTraceStop, jLLDBTraceStart, jLLDBTraceGetBinaryData. The gdb-remote packet definitions are quite comprehensive.
- Implementation of the "process trace start|stop" and "thread trace start|stop" commands.
- Implementaiton of an API in Trace.h to interact with live traces.
- Created an IntelPTDecoder for live threads, that use the debugger's stop id as checkpoint for its internal cache.
- Added a functionality to stop the process in case "process tracing" is enabled and a new thread can't traced.
- Added tests

I have some ideas to unify the code paths for post mortem and live threads, but I'll do that in another diff.

Differential Revision: https://reviews.llvm.org/D91679
2021-03-30 17:31:37 -07:00
Jonas Devlieghere 984e2f440a [lldb] Prints error using WithColor::error in lldb-platform 2021-03-29 15:45:33 -07:00
Jonas Devlieghere 047cbfe2bb [lldb] Print stack trace when lldb-vscode crashes
Print LLVM's pretty stack trace when lldb-vscode crashes. Also removes
the unnecessary call to PrintStackTraceOnErrorSignal in lldb-server as
it's already part of InitLLVM.

Differential revision: https://reviews.llvm.org/D99535
2021-03-29 14:20:59 -07:00
Greg Clayton e122877f10 Add a progress class that can track long running operations in LLDB.
LLDB can often appear deadlocked to users that use IDEs when it is indexing DWARF, or parsing symbol tables. These long running operations can make a debug session appear to be doing nothing even though a lot of work is going on inside LLDB. This patch adds a public API to allow clients to listen to debugger events that report progress and will allow UI to create an activity window or display that can show users what is going on and keep them informed of expensive operations that are going on inside LLDB.

Differential Revision: https://reviews.llvm.org/D97739
2021-03-24 12:58:13 -07:00
Shafik Yaghmour ec00502b9f [NFC][LLDB] Removing extra semicolons to silence -Wc++98-compat-extra-semi diagnostics 2021-03-23 14:32:36 -07:00
Jonas Devlieghere e089b5e9e1 [lldb] Call os_log_fault on lldb_assert
Call `os_log_fault` when an lldb assert fails. We piggyback off
`LLVM_SUPPORT_XCODE_SIGNPOSTS`, which also depends on `os_log`, to avoid
having to introduce another CMake check and corresponding define.

This patch also adds a small test using lldb-test that verifies we abort
with a "regular" assertion when asserts are enabled.

Differential revision: https://reviews.llvm.org/D98987
2021-03-19 14:23:50 -07:00
Walter Erquinigo 34885bffdf [lldb-vscode] Handle request_evaluate's context attribute
Summary:
The request "evaluate" supports a "context" attribute, which is sent by VSCode. The attribute is defined here https://microsoft.github.io/debug-adapter-protocol/specification#Requests_Evaluate

The "clipboard" context is not yet supported by lldb-vscode, so we can forget about it for now. The 'repl' (i.e. Debug Console) and 'watch' (i.e. Watch Expression) contexts must use the expression parser in case the frame's variable path is not enough, as the user expects these expressions to never fail. On the other hand, the 'hover' expression is invoked whenever the user hovers on any keyword on the UI and the user is fine with the expression not being fully resolved, as they know that the 'repl' case is the fallback they can rely on.

Given that the 'hover' expression is invoked many many times without the user noticing it due to it being triggered by the mouse, I'm making it use only the frame's variable path functionality and not the expression parser. This should speed up tremendously the responsiveness of a debug session when the user only sets source breakpoints and inspect local variables, as the entire debug info is not needed to be parsed.

Regarding tests, I've tried to be as comprehensive as possible considering a multi-file project. Fortunately, the results from the "hover" case are enough most of the times.

Differential Revision: https://reviews.llvm.org/D98656
2021-03-15 15:09:23 -07:00
Jonas Devlieghere 3dcbfa27d4 [debugserver] Fix more compiler warnings on arm64
This fixes the following two warnings in code that's only compiled on
arm64:

 - warning: cast from 'const void *' to 'unsigned char *' drops const
   qualifier [-Wcast-qual]
 - warning: embedding a directive within macro arguments has undefined
   behavior [-Wembedded-directive]
2021-03-03 23:12:12 -08:00
Jonas Devlieghere 011a8e218e [debugserver] Fix logic to extract app bundle from file path
Fix the logic to find the app bundle in a path by correctly accounting
for paths containing multiple occurrences of `.app`. The new logic will
correctly extract `com.app.Foo.app` from `com.app.Foo.app/com.app.Foo`.

rdar://74666208

Differential revision: https://reviews.llvm.org/D97441
2021-02-24 23:08:42 -08:00
António Afonso 878d82c4f2 Revert "[lldb-vscode] Emit the breakpoint changed event on location resolved"
This reverts commit 1f21d488bd.
2021-02-21 13:08:06 -08:00
António Afonso 1f21d488bd [lldb-vscode] Emit the breakpoint changed event on location resolved
VSCode was not being informed whenever a location had been resolved (after being initated as non-resolved), so even though it was actually resolved, the IDE would show a hollow dot (instead of a red dot) because it didn't know about the change.

Differential Revision: https://reviews.llvm.org/D96680
2021-02-21 09:46:29 -08:00
Pavel Labath 004a264f8c [lldb] Fix shared library directory computation on windows
Our code for locating the shared library directory works via dladdr (or
the windows equivalent) to locate the path of an address known to reside
in liblldb. This works great for C++ programs, but there's a catch.

When (lib)lldb is used from python (like in our test suite), this dladdr
call will return a path to the _lldb.so (or such) file in the python
directory. To compensate for this, we have code which attempts to
resolve this symlink, to ensure we get the canonical location. However,
here's the second catch.

On windows, this file is not a symlink (but a copy), so this logic
fails. Since most of our other paths are derived from the liblldb
location, all of these paths will be wrong, when running the test suite.
One effect of this was the failure to find lldb-server in D96202.

To fix this issue, I add some windows-specific code to locate the
liblldb directory. Since it cannot rely on symlinks, it works by
manually walking the directory tree -- essentially doing the opposite of
what we do when computing the python directory.

To avoid python leaking back into the host code, I implement this with
the help of a callback which can be passed to HostInfo::Initialize in
order to assist with the directory location. The callback lives inside
the python plugin.

I also strenghten the existing path test to ensure the returned path is
the right one.

Differential Revision: https://reviews.llvm.org/D96779
2021-02-18 15:37:52 +01:00
Jonas Devlieghere 71811048c0 [debugserver] Correctly pass argv[0] to execl
The execl function takes both the executable and argv[0].
2021-02-15 18:42:21 -08:00
Michał Górny bee4d6efe1 [lldb] Rename FreeBSDRemote to FreeBSD (NFC)
Differential Revision: https://reviews.llvm.org/D96557
2021-02-15 13:04:11 +01:00
Michał Górny cd44339856 [lldb] Remove the legacy FreeBSD plugin
The new FreeBSDRemote plugin has reached feature parity with the legacy
plugin, so we can finally remove the latter.  The new plugin will
be renamed to FreeBSD in a separate commit to avoid confusion.

Differential Revision: https://reviews.llvm.org/D96555
2021-02-15 13:04:11 +01:00
Jonas Devlieghere ac1242bce3 [debugserver] Fix more warnings in DNBArchImplARM64 2021-02-05 15:21:24 -08:00
Walter Erquinigo 36496cc299 [lldb-vscode] correctly use Windows macros
@mstorsjo found a mistake that I made when trying to fix some Windows
compilation errors encountered by @stella.stamenova.

I was incorrectly using the LLVM_ON_UNIX macro. In any case, proper use
of

  #if defined(_WIN32)

should be the actual fix.

Differential Revision: https://reviews.llvm.org/D96060
2021-02-04 11:03:33 -08:00
Jonas Devlieghere 5580fa10db [lldb] Fix debugserver-entitlements.plist path 2021-02-03 10:42:36 -08:00
Jonas Devlieghere 39047f6c2e [debugserver] Fix -Wmissing-field-initializers warnings on arm64 2021-02-02 10:29:09 -08:00
Jonas Devlieghere ec6815a72d [debugserver] Fix -Wsign-compare warnings on arm64 2021-02-02 10:23:57 -08:00
Jonas Devlieghere 9a62b7242a [debugserver] Fix -Wunused-function warnings on arm64 2021-02-02 10:20:11 -08:00
Jonas Devlieghere 870a58a758 [debugserver] Fix -Winconsistent-missing-override warnings on arm64 2021-02-02 09:41:18 -08:00
Martin Storsjö 11e74e512d [lldb] Remove a stray semicolon, fixing GCC warnings. NFC. 2021-02-01 13:45:07 +02:00
serge-sans-paille 27f2fe9163 Adapt lldb-instr to d47ee525f9 APi change 2021-01-29 10:58:40 +01:00
Walter Erquinigo 0bca9a7ce2 Fix lldb-vscode builds on Windows targeting POSIX
@stella.stamenova found out that lldb-vscode's Win32 macros were failing
when building on windows targetings POSIX platforms.

I'm changing these macros for LLVM_ON_UNIX, which should be more
accurate.
2021-01-28 09:36:13 -08:00
Walter Erquinigo ab5591e1d8 Fix runInTerminal failures on Windows
stella.stemenova mentioned in https://reviews.llvm.org/D93951 failures on Windows for this test.

I'm fixing the macro definitions and disabling the tests for python
versions lower than 3.7. I'll figure out that actual issue with
python3.6 after the buildbots are fine again.
2021-01-27 13:17:23 -08:00
Walter Erquinigo 1ac36b34db Fix 0f0462cacf
This fails on Windows because std::future<llvm::Error> fail to compile.
Now switching to SBError as a workaround.

Failed buildbot: http://lab.llvm.org:8011/#/builders/83/builds/3021
2021-01-25 14:06:10 -08:00
Walter Erquinigo 0f0462cacf [vscode] Improve runInTerminal and support linux
Depends on D93874.

runInTerminal was using --wait-for, but it was some problems because it uses process polling looking for a single instance of the debuggee:

- it gets to know of the target late, which renders breakpoints in the main function almost impossible
- polling might fail if there are already other processes with the same name
- polling might also fail on some linux machine, as it's implemented with the ps command, and the ps command's args and output are not standard everywhere

As a better way to implement this so that it works well on Darwin and Linux, I'm using now the following process:

- lldb-vscode notices the runInTerminal, so it spawns lldb-vscode with a special flag --launch-target <target>. This flags tells lldb-vscode to wait to be attached and then it execs the target program. I'm using lldb-vscode itself to do this, because it makes finding the launcher program easier. Also no CMAKE INSTALL scripts are needed.
- Besides this, the debugger creates a temporary FIFO file where the launcher program will write its pid to. That way the debugger will be sure of which program to attach.
- Once attach happend, the debugger creates a second temporary file to notify the launcher program that it has been attached, so that it can then exec. I'm using this instead of using a signal or a similar mechanism because I don't want the launcher program to wait indefinitely to be attached in case the debugger crashed. That would pollute the process list with a lot of hanging processes. Instead, I'm setting a 20 seconds timeout (that's an overkill) and the launcher program seeks in intervals the second tepmorary file.

Some notes:
- I preferred not to use sockets because it requires a lot of code and I only need a pid. It would also require a lot of code when windows support is implemented.
- I didn't add Windows support, as I don't have a windows machine, but adding support for it should be easy, as the FIFO file can be implemented with a named pipe, which is standard on Windows and works pretty much the same way.

The existing test which didn't pass on Linux, now passes.

Differential Revision: https://reviews.llvm.org/D93951
2021-01-25 12:30:05 -08:00
Jason Molenda ad25bdcb8e Change static buffer to be BSS instead of DATA in HandlePacket_qSpeedTest
Having this 4MB buffer with a compile-time initialized string forced it
into the DATA section and it took up 4MB of space in the binary, which
accounts for like 80% of debugserver's footprint on disk.  Change it to
BSS and strcpy in the initial value at runtime instead.

<rdar://problem/73503892>
2021-01-22 16:14:24 -08:00
Walter Erquinigo 39239f9b56 [lldb-vscode] improve modules request
lldb-vsdode was communicating the list of modules to the IDE with events, which in practice ended up having some drawbacks
- when debugging large targets, the number of these events were easily 10k, which polluted the messages being transmitted, which caused the following: a harder time debugging the messages, a lag after terminated the process because of these messages being processes (this could easily take several seconds). The latter was specially bad, as users were complaining about it even when they didn't check the modules view.
- these events were rarely used, as users only check the modules view when something is wrong and they try to debug things.

After getting some feedback from users, we realized that it's better to not used events but make this simply a request and is triggered by users whenever they needed.

This diff achieves that and does some small clean up in the existing code.

Differential Revision: https://reviews.llvm.org/D94033
2021-01-21 13:18:50 -08:00
Jonas Devlieghere 999f5da6b3 [debugserver] Fix inverted if block that resulted in us using the private entitlements 2021-01-15 17:41:07 -08:00
Jason Molenda edde2eb1d2 Add unconditional logging to debugserver for launch/attach processes
Debugging app launch/attach failures can be difficult because of
all of the messages logged to the console on a darwin system;
emitting specific messages around critical API calls can make it
easier to narrow the search for the console messages related to
the failure.

<rdar://problem/67220442>

Differential revision: https://reviews.llvm.org/D94357
2021-01-11 22:17:10 -08:00
Jonas Devlieghere 272355128f [debugserver] Various plist changes
- Remove unused plists that were referenced (but unused) by Xcode.
 - Move all debugserver plists unders tools/debugserver/resources.
 - Add the ability to distinguish between com.apple.security.cs.debugger
   and com.apple.private.cs.debugger.

rdar://66082043

Differential revision: https://reviews.llvm.org/D94320
2021-01-08 18:53:08 -08:00
Michał Górny b9bfe8a753 [lldb] [debugserver] Add stN aliases for stmmN for compatibility
Add stN aliases for the FPU (stmmN) registers on MacOSX.  This should
improve compatibility between MacOSX and other platforms, and partially
fix x86*-fp-write tests without having to duplicate them.  Note that
the tests are currently still broken due to ftag incompatibility.

Differential Revision: https://reviews.llvm.org/D91847
2021-01-07 02:10:38 +01:00
Pavel Labath aca4488847 [lldb] Surpress "ingoring result" warning in reproducer_handler 2020-12-27 13:58:05 +01:00
Jonas Devlieghere 5c1c8443eb [lldb] Abstract scoped timer logic behind LLDB_SCOPED_TIMER (NFC)
This patch introduces a LLDB_SCOPED_TIMER macro to hide the needlessly
repetitive creation of scoped timers in LLDB. It's similar to the
LLDB_LOG(F) macro.

Differential revision: https://reviews.llvm.org/D93663
2020-12-22 09:10:27 -08:00
Jordan Rupprecht 869f8363c4 [lldb][NFC] Apply performance-faster-string-find (`str.find("X")` -> `str.find('x')`) 2020-12-16 10:53:18 -08:00
Jonas Devlieghere d6f5e08199 [lldb] Kill the inferior instead of detaching during test suite runs
Kill (rather than detach) form the inferior if debugserver loses its
connection to lldb to prevent zombie processes.

Differential revision: https://reviews.llvm.org/D92908
2020-12-09 18:40:06 -08:00
Jonas Devlieghere ee607ed5c3 [debugserver] Call posix_spawnattr_setarchpref_np throught the fn ptr.
Fourth time is the charm? Of course all of these issues don't show up
when the function is available...
2020-12-05 17:38:42 -08:00
Jonas Devlieghere 13ee00d0c9 [debugserver] Use dlsym for posix_spawnattr_setarchpref_np
The @available check did not work as I thought it did. Use good old
dlsym instead.
2020-12-05 14:06:45 -08:00
Jonas Devlieghere c722096b39 [debugserver] Remove bridgeos availability
I didn't realize that the 'bridgeos' is not part of the public SDK.
2020-12-05 10:18:45 -08:00
Jonas Devlieghere 0db37576c1 [debugserver] Honor the cpu sub type if specified
Use the newly added spawnattr API, posix_spawnattr_setarchpref_np, to
select a slice preferences per cpu and subcpu types, instead of just cpu
with posix_spawnattr_setarchpref_np.

rdar://16094957

Differential revision: https://reviews.llvm.org/D92712
2020-12-04 20:37:41 -08:00
David Spickett a7f8d96b16 [lldb] Use llvm::Optional for port in LaunchGDBServer
Previously we used UINT16_MAX to mean no port/no specifc
port. This leads to confusion because 65535 is a valid
port number.

Instead use an optional. If you want a specific port call
LaunchGDBServer as normal, otherwise pass an empty optional
and it will be set to the port that gets chosen.
(or left empty in the case where we fail to find a port)

Reviewed By: labath

Differential Revision: https://reviews.llvm.org/D92035
2020-11-30 11:20:39 +00:00
David Spickett 98e87f76d0 [lldb] Error when there are no ports to launch a gdbserver on
Previously if you did:
$ lldb-server platform --server <...> --min-gdbserver-port 12346
--max-gdbserver-port 12347
(meaning only use port 12346 for gdbservers)

Then tried to launch two gdbservers on the same connection,
the second one would return port 65535. Which is a real port
number but it actually means lldb-server didn't find one it was
allowed to use.

send packet: $qLaunchGDBServer;<...>
read packet: $pid:1919;port:12346;#c0
<...>
send packet: $qLaunchGDBServer;<...>
read packet: $pid:1927;port:65535;#c7

This situation should be an error even if port 65535 does happen
to be available on the current machine.

To fix this make PortMap it's own class within
GDBRemoteCommunicationServerPlatform.

This almost the same as the old typedef but for
GetNextAvailablePort() returning an llvm::Expected.
This means we have to handle not finding a port,
by returning an error packet.

Also add unit tests for this new PortMap class.

Reviewed By: labath

Differential Revision: https://reviews.llvm.org/D91634
2020-11-30 10:19:14 +00:00
Alessandro Arzilli 27012c0f75 [debugserver] Add option to propagate SIGSEGV to target process
Adds a command line option that makes debugserver propagate the SIGSEGV
signal to the target process.

Motivation: I'm one of the maintainers of Delve [1] a debugger for Go.
We use debugserver as our backend on macOS and one of the most often
reported bugs is that, on macOS, we don't propagate SIGSEGV back to the
target process [2]. Sometimes some programs will actually cause a
SIGSEGV, by design, and then handle it. Those programs can not be
debugged at all.

Since catching signals isn't very important for a Go debugger I'd much
rather have a command line option in debugserver that causes it to let
SIGSEGV go directly to the target process.

[1] https://github.com/go-delve/delve/
[2] https://github.com/go-delve/delve/issues/852

Differential revision: https://reviews.llvm.org/D89315
2020-11-17 09:27:52 -08:00
Jason Molenda 92b036dea2 debugserver should advance pc past builtin_debugtrap insn
On x86_64, when you hit a __builtin_debugtrap instruction, you
can continue past this in the debugger.  This patch has debugserver
recognize the specific instruction used for __builtin_debugtrap
and advance the pc past it, so that the user can continue execution
once they've hit one of these.

In the patch discussion, we were in agreement that it would be better
to have this knowledge up in lldb instead of depending on each
stub rewriting the pc behind the debugger's back, but that's a
larger scale change for another day.

<rdar://problem/65521634>
Differential revision: https://reviews.llvm.org/D91238
2020-11-12 23:31:14 -08:00
Jonas Devlieghere 0ca90eb335 [lldb] Don't use ::exit but instead return from the driver loop (NFC)
This fixes a reproducer test failure that was caused by the undefined
order in which global destructors run. More concretely, the static
instance of the RealFileSystem had been destroyed before we finalized
the reproducer, which uses it to copy files into the reproducer. By
exiting normally, we call SBDebugger::Terminate and finalize the
reproducer before any static dtors are run.
2020-11-09 16:47:30 -08:00
Jonas Devlieghere 6ac12b5b6c [lldb] Destory the debugger in the Driver dtor (NFC) 2020-11-09 16:47:30 -08:00
Jonas Devlieghere 73811d32c7 [lldb] Move copying of files into reproducer out of process
For performance reasons the reproducers don't copy the files captured by
the file collector eagerly, but wait until the reproducer needs to be
generated.

This is a problematic when LLDB crashes and we have to do all this
signal-unsafe work in the signal handler. This patch uses a similar
trick to clang, which has the driver invoke a new cc1 instance to do all
this work out-of-process.

This patch moves the writing of the mapping file as well as copying over
the reproducers into a separate process spawned when lldb crashes.

Differential revision: https://reviews.llvm.org/D89600
2020-10-23 12:33:54 -07:00
Pavel Labath d900b755ed [lldb] Fix windows build for fa5fa63fd1 2020-10-21 17:51:11 +02:00
Pavel Labath fa5fa63fd1 [lldb] Port lldb gdb-server to libOption
The existing help text was very terse and was missing several important
options. In the new version, I add a short description of each option
and a slightly longer description of the tool as a whole.

The new option list does not include undocumented no-op options:
--debug and --verbose. It also does not include undocumented short
aliases for long options, with two exceptions: -h, because it's
well-known; and -S (--setsid), as it's used in one test. Using these
options will now produce an error. I believe that is acceptable as users
aren't generally invoking lldb-server directly, and the only way to
learn about the short aliases was by looking at the source.

Differential Revision: https://reviews.llvm.org/D89477
2020-10-21 16:16:18 +02:00
Jason Molenda b19856881c Fix typeo in attach failed error message.
<rdar://problem/70296751>
2020-10-14 23:31:24 -07:00
Jason Molenda 7d67c06391 Remove unused build configurations from debugserver xcode project
the xcode project file for debugserver exists only to make my
life easier when I'm working only on debugserver and don't need
to build the rest of llvm/lldb.  It had many build configurations
to reflect our old lldb xcode project file, which is long gone.
Removing them to simplify the configurations.

Specifically dropping CustomSwift-Debug, DebugClang, DebugPresubmission,
CustomSwift-Release, BuildAndIntegration.  Keeping Debug & Release.
2020-10-13 16:39:30 -07:00
Jason Molenda e763709d14 Add a new launch flag option for watchos, WatchComplicationLaunch.
Link against CarouselServices on watchos, recognize the
WatchComplicationLaunch launch flag option when that framework
is available.

<rdar://problem/62473967>, <rdar://problem/61230088>
2020-10-13 16:28:16 -07:00
Michał Górny 1a600266c3 [lldb] Initial version of FreeBSD remote process plugin
Add a new FreeBSD Process plugin using client/server model.  This plugin
is based on the one used by NetBSD.  It currently supports a subset
of functionality for amd64.  It is automatically used when spawning
lldb-server.  It can also be used by lldb client by setting
FREEBSD_REMOTE_PLUGIN environment variable (to any value).

The code is capable of debugging simple single-threaded programs.  It
supports general purpose, debug and FPU registers (up to XMM) of amd64,
basic signalling, software breakpoints.

Adding the support for the plugin involves removing some dead code
from FreeBSDPlatform plugin (that was not ever used because
CanDebugProcess() returned false), and replacing it with appropriate
code from NetBSD platform support.

Differential Revision: https://reviews.llvm.org/D88796
2020-10-08 16:03:00 +02:00
Jordan Rupprecht ad865d9d10 [lldb-vscode] Allow an empty 'breakpoints' field to clear breakpoints.
Per the DAP spec for SetBreakpoints [1], the way to clear breakpoints is: `To clear all breakpoint for a source, specify an empty array.`

However, leaving the breakpoints field unset is also a well formed request (note the `breakpoints?:` in the `SetBreakpointsArguments` definition). If it's unset, we have a couple choices:

1. Crash (current behavior)
2. Clear breakpoints
3. Return an error response that the breakpoints field is missing.

I propose we do (2) instead of (1), and treat an unset breakpoints field the same as an empty breakpoints field.

[1] https://microsoft.github.io/debug-adapter-protocol/specification#Requests_SetBreakpoints

Reviewed By: wallace, labath

Differential Revision: https://reviews.llvm.org/D88513
2020-09-30 11:32:06 -07:00
Jordan Rupprecht c3193e464c [lldb/ipv6] Support running lldb tests in an ipv6-only environment.
When running in an ipv6-only environment where `AF_INET` sockets are not available, many lldb tests (mostly gdb remote tests) fail because things like `127.0.0.1` don't work there.

Use `localhost` instead of `127.0.0.1` whenever possible, or include a fallback of creating `AF_INET6` sockets when `AF_INET` fails.

Reviewed By: labath

Differential Revision: https://reviews.llvm.org/D87333
2020-09-30 11:08:41 -07:00
Dave Lee 9abd1e8f4e [lldb] Remove lldb-perf remenant
Delete a file remaining from the deletion of lldb-perf in D64362.

Differential Revision: https://reviews.llvm.org/D88119
2020-09-23 08:23:50 -07:00
Walter Erquinigo a3bc0401d4 Fix 132e57bc59
Compile error found in
http://lab.llvm.org:8011/builders/lldb-x86_64-debian/builds/17403/steps/build/logs/stdio

Simple fix
2020-09-14 10:54:17 -07:00
Walter Erquinigo 132e57bc59 Retry of D84974
- Fix a small issue caused by a conflicting name (GetObject) on Windows.
  The fix was to rename the internal GetObject function to
  GetNextFunction.
2020-09-14 10:44:13 -07:00
Jordan Rupprecht 6040d52550 [NFC] Fix whitespace in lldb-vscode --help 2020-09-10 10:57:23 -07:00
Dave Lee 55dd731b29 [debugserver] Extract function for default launch flavor
Extract a function for turning `eLaunchFlavorDefault` into a concreate `eLaunchFlavor` value.

This new function encapsulates the few compile time variables involved, and also prevents clang unused code diagnostics.

Differential Revision: https://reviews.llvm.org/D87327
2020-09-09 11:35:44 -07:00
Walter Erquinigo 5c463d107d Revert "Retry of D84974"
This reverts commit 5b2b4f331d.

This caused a link error in
http://lab.llvm.org:8011/builders/lldb-x64-windows-ninja/builds/18794/steps/build/logs/stdio
2020-09-08 13:41:11 -07:00
Walter Erquinigo 5b2b4f331d Retry of D84974
The test is being disabled on Linux, as lldb-vscode has a bug with
--wait-for on LInux.
I'm also fixing some compilation warnings.
2020-09-08 11:50:09 -07:00
Raphael Isemann f0699d9109 [debugserver] Fix that debugserver's stop reply packets always return signal code 0
If our process terminates due to an unhandled signal, we are supposed to get the
signal code via WTERMSIG. However, we instead try to get the exit status via
WEXITSTATUS which just ends up always calculating signal code 0 (at least on the
macOS implementation where it just shifts the signal code bits away and we're
left with only 0 bits).

The exit status calculation on the LLDB side also seems a bit off as it claims
an exit status that is just the signal code (instead of for example 128 + signal
code), but that will be another patch.

Reviewed By: jasonmolenda

Differential Revision: https://reviews.llvm.org/D86336
2020-09-03 09:47:03 +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
Walter Erquinigo 5f6ca065a5 Revert de6caf871b and 51128b670d (https://reviews.llvm.org/D84974)
The tests seem to be timing out in all linux bots. Need further analysis.

Revert "run in terminal"

This reverts commit de6caf871b.
2020-09-02 17:06:48 -07:00
Walter Erquinigo 51128b670d Fix de6caf871b
Failure found in
http://lab.llvm.org:8011/builders/lldb-x86_64-debian/builds/16855

The issue is a header not being included
2020-09-02 15:05:33 -07:00
Walter Erquinigo de6caf871b run in terminal 2020-09-02 14:38:00 -07:00
Yifan Shen 82139b8770 Simplify Symbol Status Message to Only Debug Info Size
The Symbol Status in modules view is simplified so that only when the module has debug info and its size is non-zero, will the status message be displayed. The symbol status message is renamed to debug info size and flag message like "Symbols not found" and "Symbols loaded" is deleted.

Differential Revision: https://reviews.llvm.org/D86662
2020-09-01 16:25:20 -07:00
Med Ismail Bennani 0224738c1a [lldb/interpreter] Improve REPL init file compatibility
This patch changes the command interpreter sourcing logic for the REPL
init file. Instead of looking for a arbitrary file name, it standardizes
the REPL init file name to match to following scheme:

                          `.lldbinit-<language>-repl`

This will make the naming more homogenous and the sourcing logic future-proof.

rdar://65836048

Differential Revision: https://reviews.llvm.org/D86987

Signed-off-by: Med Ismail Bennani <medismail.bennani@gmail.com>
2020-09-02 01:21:22 +02:00
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
Jonas Devlieghere 141c8475b6 [lldb] Get rid of LLDB_LIB_DIR and LLDB_IMPLIB_DIR in dotest
This patch removes the rather confusing LLDB_LIB_DIR and LLDB_IMPLIB_DIR
environment variables. They are confusing because LLDB_LIB_DIR would
point to the bin subdirectory in the build root while LLDB_IMPLIB_DIR
would point to the lib subdirectory. The reason far this was
LLDB.framework, which gets build under bin.

This patch replaces their uses with configuration.lldb_framework_path
and configuration.lldb_libs_dir respectively.

Differential revision: https://reviews.llvm.org/D86817
2020-08-28 15:45:54 -07:00
Jonas Devlieghere a7e4a17735 [lldb] Make lldb-argdumper a dependency of liblldb
Always make lldb-argdumper a dependency of liblldb. Currently it is only
a dependency of the python swig target because of the relative symlink
in the python resource directory. That means that the dependency won't
be there when LLDB_ENABLE_PYTHON is disabled.

Differential revision: https://reviews.llvm.org/D86722
2020-08-27 09:31:02 -07:00
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