code. This will enable disassembly of the optional subset of
neon that some Cortex cores support. Add a unit test to check
that a few of these instructions disassemble as expected.
<rdar://problem/26674303>
llvm-svn: 341623
The GetLanguageForExpr has side effects, so we can't remove this
call without breaking the completion mechanism. However, we can
keep the change that gets rid of this unnecessary variable.
llvm-svn: 341535
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
This patch allows LLDB to print column info in backtraces et al. if
available, which is useful when the backtrace contains a frame like
the following:
f(can_crash(0), can_crash(1));
Differential Revision: https://reviews.llvm.org/D51661
llvm-svn: 341506
return the opcode as a Expected<ArrayRef> instead of a
Status+pointer+size combo.
I also move the linux implementation to the base class, as the trap
opcodes are likely to be the same for all/most implementations of the
class (except the arm one, where linux chooses a different opcode than
what the arm spec recommends, which I keep linux-specific).
llvm-svn: 341487
Summary:
Swig wraps C++ code into SWIG_PYTHON_THREAD_BEGIN_ALLOW; ... SWIG_PYTHON_THREAD_END_ALLOW;
Thus, LLDB crashes with "Fatal Python error: Python memory allocator called without holding the GIL" when calls an lldb_SB***___str__ function.
Reviewers: clayborg
Reviewed By: clayborg
Differential Revision: https://reviews.llvm.org/D51569
llvm-svn: 341482
TestCompletion was failing quite frequently on our Linux bots. Some tracing
revealed that when we are iterating BaseDir we are not getting all the entries.
More specifically, we are sometimes missing the entry corresponding to the
TestCompletion directory that the first test in DirCompletionAbsolute is
looking for. BaseDir is the directory where lit is creating all the temporary
files. The semantics of opendir/readdir are unclear when it comes to iterating
over a directory that changes contents, but it seems like on Linux you might
fail to list an entry even if it was there before opendir and is still present
throughout the iteration. Changing the test to only look inside of the test-
specific directory seems to fix the instability.
This commit also removes some assertions that were added to try to track down
this issue.
llvm-svn: 341425
Summary:
LLVM provide (str)errno helpers, so convert code to use it.
Also fixes warning:
/home/xbolva00/LLVM/llvm/tools/lldb/source/Host/common/PseudoTerminal.cpp:248:25: warning: ignoring return value of ‘char* strerror_r(int, char*, size_t)’, declared with attribute warn_unused_result [-Wunused-result]
::strerror_r(errno, error_str, error_len);
Reviewers: JDevlieghere
Reviewed By: JDevlieghere
Subscribers: abidh, lldb-commits
Differential Revision: https://reviews.llvm.org/D51591
llvm-svn: 341320
Summary:
`dwarf5-index-is-used.cpp` have been failing after rL340206, because `clang`
have stopped to emit pubnames by default after that change. Current patch adds
`-gpubnames` option to the `clang` command line in the test to emit pubnames.
Reviewers: labath, dblaikie
Reviewed By: labath
Subscribers: clayborg, probinson, teemperor, lldb-commits, aprantl, JDevlieghere, abidh, stella.stamenova
Tags: #lldb
Differential Revision: https://reviews.llvm.org/D51208
llvm-svn: 341296
These happen in a couple of tests when lldb tries to pretty print a
const char * variable in the inferior which points to garbage. Instead,
we have the python replace the invalid sequences with the unicode
replacement character.
llvm-svn: 341274
If you tried to complete somwthing like ~/., lldb would come up with a lot
of non-existent filenames by concatenating every exisitng file in the directory
with an initial '.'.
This was due to a workaround for an llvm::fs::path::filename behavior that
was not applied selectively enough.
llvm-svn: 341268
This applies the same workaround as r321271 to other tests. The root
problem is that lldb finds an internal symbol with the same name in the
debug info of system libraries, and then fails to disambiguate between
the two.
llvm-svn: 341235
presumably the or subexpression was meant to be evaluated first. The way
it is now means that we apply the workaround for any python in `/usr`,
which matches pretty much every unix system.
llvm-svn: 341167
Host info computation can involve DNS traffic (to compute the remote
host name). On very unreliable networks (such as free WiFi on trains),
this can take several seconds to complete or timeout. Increase the
qHostInfo timeout to account for this.
llvm-svn: 341164
The patch was originally written before we had a CompletionRequest,
so it still used a StringList to pass back the completions to
the request.
llvm-svn: 341124
Using a listen queue of length 0 caused a deadlock on my machine in the
gdb-client tests while attempting to establish the loopback socket
connection.
I am not sure if this is down to a different python or kernel version,
but in either case, having queue of length zero sounds like a bad idea,
so I'm bumping that to one (which also fixes the deadlock).
llvm-svn: 341096
Summary:
This class was initially in Host because its implementation used to be
very OS-specific. However, with C++11, it has become a very simple
std::condition_variable wrapper, with no host-specific code.
It is also a general purpose utility class, so it makes sense for it to
live in a place where it can be used by everyone.
This has no effect on the layering right now, but it enables me to later
move the Listener+Broadcaster+Event combo to a lower layer, which is
important, as these are used in a lot of places (notably for launching a
process in Host code).
Reviewers: jingham, zturner, teemperor
Reviewed By: zturner
Subscribers: xiaobai, mgorny, lldb-commits
Differential Revision: https://reviews.llvm.org/D50384
llvm-svn: 341089
Summary:
This patch adds initial code completion support for the `expr` command.
We now have a completion handler in the expression CommandObject that
essentially just attempts to parse the given user expression with Clang with
an attached code completion consumer. We filter and prepare the
code completions provided by Clang and send them back to the completion
API.
The current completion is limited to variables that are in the current scope.
This includes local variables and all types used by local variables. We however
don't do any completion of symbols that are not used in the local scope (or
in some other way already in the ASTContext).
This is partly because there is not yet any code that manually searches for additiona
information in the debug information. Another cause is that for some reason the existing
code for loading these additional symbols when requested by Clang doesn't seem to work.
This will be fixed in a future patch.
Reviewers: jingham, teemperor
Reviewed By: teemperor
Subscribers: labath, aprantl, JDevlieghere, friss, lldb-commits
Differential Revision: https://reviews.llvm.org/D48465
llvm-svn: 341086
This patch extends the SBAPI to allow for setting a breakpoint not
only at a specific line, but also at a specific (minimum) column. When
a column is specified, it will try to find an exact match or the
closest match on the same line that comes after the specified
location.
Differential Revision: https://reviews.llvm.org/D51461
llvm-svn: 341078
Summary:
The syntax highlighting feature so far is mutually exclusive with the lldb feature
that marks the current column in the line by underlining it via an ANSI color code.
Meaning that if you enable one, the other is automatically disabled by LLDB.
This was caused by the fact that both features inserted color codes into the the
source code and were likely to interfere with each other (which would result
in a broken source code printout to the user).
This patch moves the cursor code into the highlighting framework, which provides
the same feature to the user in normal non-C source code. For any source code
that is highlighted by Clang, we now also have cursor marking for the whole token
that is under the current source location. E.g., before we underlined only the '!' in the
expression '1 != 2', but now the whole token '!=' is underlined. The same for function
calls and so on. Below you can see two examples where we before only underlined
the first character of the token, but now underline the whole token.
{F7075400}
{F7075414}
It also simplifies the DisplaySourceLines method in the SourceManager as most of
the code in there was essentially just for getting this column marker to work as
a FormatEntity.
Reviewers: aprantl
Reviewed By: aprantl
Subscribers: lldb-commits
Differential Revision: https://reviews.llvm.org/D51466
llvm-svn: 341003
read/understand/maintain.
As a side-effect, this should also improve the performance by avoiding
costly vector element removals and switching from a std::map to a
SmallDenseSet.
Differential Revision: https://reviews.llvm.org/D51453
llvm-svn: 340994
Summary:
D48465 is currently blocked by the fact that tab-completing the first expression is deadlocking LLDB.
The reason for this deadlock is that when we push the ProcessIO handler for reading the Objective-C runtime
information from the executable (which is triggered when we parse the an expression for the first time),
the IOHandler can't be pushed as the Editline::Cancel method is deadlocking.
The deadlock in Editline is coming from the m_output_mutex, which is locked before we go into tab completion.
Even without this lock, calling Cancel on Editline will mean that Editline cleans up behind itself and deletes the
current user-input, which is screws up the console when we are tab-completing at the same time.
I think for now the most reasonable way of fixing this is to just not call Cancel on the current IOHandler when we push
the IOHandler for running an internal utility function.
As we can't really write unit tests for IOHandler itself (due to the hard dependency on an initialized Debugger including
all its global state) and Editline completion is currently also not really testable in an automatic fashion, the test for this has
to be that the expression command completion in D48465 doesn't fail when requesting completion the first time.
A more precise test plan for this is:
1. Apply D48465.
2. Start lldb and break in some function.
3. Type `expr foo` and press tab to request completion.
4. Without this patch, we deadlock and LLDB stops responding.
I'll provide an actual unit test for this once I got around and made the IOHandler code testable,
but for now unblocking D48465 is more critical.
Thanks to Jim for helping me debugging this.
Reviewers: jingham
Reviewed By: jingham
Subscribers: emaste, clayborg, abidh, lldb-commits
Differential Revision: https://reviews.llvm.org/D50912
llvm-svn: 340988
The CvRecordPdb70 structure looks like:
struct CvRecordPdb70 {
uint8_t Uuid[16];
llvm::support::ulittle32_t Age;
// char PDBFileName[];
};
We were including the "Age" in the UUID for Apple vedors which caused us to not be able to match the UUID to built binaries. The "Age" field is set to zero in breakpad minidump files for Apple targets.
Differential Revision: https://reviews.llvm.org/D51442
llvm-svn: 340966
Summary:
This patch allows to resolve a symbol context block info even if a function
info was not requested. Also it adds the correct resolving of nested blocks
(the previous implementation used function blocks instead of them).
Reviewers: zturner, asmith, labath
Reviewed By: asmith
Subscribers: lldb-commits, stella.stamenova
Tags: #lldb
Differential Revision: https://reviews.llvm.org/D51104
llvm-svn: 340901
GNU sed and BSD sed have a different command-line syntax for in-place
editing, and the current form of the script would only work with BSD
sed. The easiest way to get cross-platform behavior is to specify a
backup suffix and then just delete the backup file at the end. (BSD sed
is the default on macOS, but it's possible to acquire GNU coreutils and
have your `sed` be GNU sed even on macOS; I'm aware it's not officially
supported in any capacity, but it's easy enough to support here.)
An alternative would be using `perl -p -i -e` instead of `sed -i`, but I
figured it was best to make the minimal working change.
Differential Revision: https://reviews.llvm.org/D51374
llvm-svn: 340885
Summary:
For some bitfield patterns (like the one added by this commit), Clang will
generate non-regular data types like i24 or i48. This patch follows a
pretty naive approach of just bumping the type size to the next power of 2.
DataExtractor know how to deal with weird sizes. The operations on Scalar
do not know how to deal with those types though, so we have to legalize the
size when creating a Scalar.
Reviewers: jingham, clayborg
Subscribers: lldb-commits
Differential Revision: https://reviews.llvm.org/D51245
llvm-svn: 340880
Summary: limits.h is needed for getting PATH_MAX definition, this comes to fore
with musl libc where limits.h is not included indirectly via other system headers.
Patch by Khem Raj, thanks!
Reviewers: compnerd
Reviewed By: compnerd
Subscribers: llvm-commits
Tags: #lldb
Differential Revision: https://reviews.llvm.org/D31275
llvm-svn: 340876
Summary:
This patch replaces the manual lock/unlock calls for gaining exclusive access to the disassembler with
a RAII-powered access scope. This should prevent that we somehow skip over these trailing Unlock calls
(e.g. with early returns).
We also have a second `GetDisasmToUse` method now that takes an already constructed access scope to
prevent deadlocks when we call this from other methods.
Reviewers: #lldb, davide, vsk
Reviewed By: #lldb, davide, vsk
Subscribers: davide, vsk, lldb-commits
Differential Revision: https://reviews.llvm.org/D51319
llvm-svn: 340835
Jason Molenda
