Summary:
Adding a new test would require one to duplicate a significant part of
the existing test that we have. This attempts to reduce that by moving
some part of that code to the test fixture. The StandardStartupTest
fixture automatically starts up the server and connects it to the
client. I also add a more low-level TestBase fixture, which allows one
to start up the client and server in a custom way (I am going to need
this for the test I am writing).
Reviewers: eugene, zturner
Subscribers: lldb-commits, mgorny
Differential Revision: https://reviews.llvm.org/D41066
llvm-svn: 320809
Host::GetEnvironment returns a StringList, but the interface for
launching a process takes Args. The fact that we use two classes for
representing an environment is not ideal, but for now we should at least
have an easy way to convert between the two.
llvm-svn: 320366
Summary:
For ptys (at least on Linux), the end-of-file (closing of the slave FD)
is signalled by the POLLHUP flag. We were ignoring this flag, which
meant that when this happened, we would spin in a loop, continuously
calling poll(2) and not making any progress.
This makes sure we treat POLLHUP as a read event (reading will return
0), and we call the registered callback when it happens. This is the
behavior our clients expect (and is consistent with how select(2)
works).
Reviewers: eugene, beanz
Subscribers: lldb-commits
Differential Revision: https://reviews.llvm.org/D41008
llvm-svn: 320345
We currently use target_link_libraries without an explicit scope
specifier (INTERFACE, PRIVATE or PUBLIC) when linking executables.
Dependencies added in this way apply to both the target and its
dependencies, i.e. they become part of the executable's link interface
and are transitive.
Transitive dependencies generally don't make sense for executables,
since you wouldn't normally be linking against an executable. This also
causes issues for generating install export files when using
LLVM_DISTRIBUTION_COMPONENTS. For example, clang has a lot of LLVM
library dependencies, which are currently added as interface
dependencies. If clang is in the distribution components but the LLVM
libraries it depends on aren't (which is a perfectly legitimate use case
if the LLVM libraries are being built static and there are therefore no
run-time dependencies on them), CMake will complain about the LLVM
libraries not being in export set when attempting to generate the
install export file for clang. This is reasonable behavior on CMake's
part, and the right thing is for LLVM's build system to explicitly use
PRIVATE dependencies for executables.
Unfortunately, CMake doesn't allow you to mix and match the keyword and
non-keyword target_link_libraries signatures for a single target; i.e.,
if a single call to target_link_libraries for a particular target uses
one of the INTERFACE, PRIVATE, or PUBLIC keywords, all other calls must
also be updated to use those keywords. This means we must do this change
in a single shot. I also fully expect to have missed some instances; I
tested by enabling all the projects in the monorepo (except dragonegg),
and configuring both with and without shared libraries, on both Darwin
and Linux, but I'm planning to rely on the buildbots for other
configurations (since it should be pretty easy to fix those).
Even after this change, we still have a lot of target_link_libraries
calls that don't specify a scope keyword, mostly for shared libraries.
I'm thinking about addressing those in a follow-up, but that's a
separate change IMO.
Differential Revision: https://reviews.llvm.org/D40823
llvm-svn: 319840
1. Move TaskPool into the namespace lldb_private.
2. Add missing std::move in TaskPoolImpl::Worker.
3. std:🧵:hardware_concurrency may return 0,
handle this case correctly.
Differential revision: https://reviews.llvm.org/D40587
Test plan: make check-all
llvm-svn: 319492
Summary:
llvm::APSInt(0) asserts because it creates an int with bit-width 0 and
not (as I thought) a value 0.
Theoretically it should be sufficient to change this to APSInt(1), as
the intention there was that the value of the first argument should be
ignored if the type is invalid, but that would look dodgy.
Instead, I use llvm::Optional to denote an invalid value and use a
special struct instead of a std::pair, to reduce typing and increase
clarity.
Reviewers: clayborg
Subscribers: lldb-commits
Differential Revision: https://reviews.llvm.org/D40615
llvm-svn: 319414
The rationale here is that ArchSpec is used throughout the codebase,
including in places which should not depend on the rest of the code in
the Core module.
This commit touches many files, but most of it is just renaming of
#include lines. In a couple of cases, I removed the #include ArchSpec
line altogether, as the file was not using it. In one or two places,
this necessitated adding other #includes like lldb-private-defines.h.
llvm-svn: 318048
Summary:
In D39387, I was quick to jump to conclusion that ArchSpec has no
external dependencies. It turns there still was one call to
HostInfo::GetArchitecture left -- for implementing the "systemArch32"
architecture and friends.
Since GetAugmentedArchSpec is the place we handle these "incomplete"
triples that don't specify os or vendor and "systemArch" looks very much
like an incomplete triple, I move its handling there.
After this ArchSpec *really* does not have external dependencies, and
I'll move it to the Utility module as a follow-up.
Reviewers: zturner, clayborg, jingham
Subscribers: lldb-commits
Differential Revision: https://reviews.llvm.org/D39896
llvm-svn: 318046
Summary:
Despite it's name, GetTemplateArgument was only really working for Type
template arguments. This adds the ability to retrieve integral arguments
as well (which I've needed for the std::bitset data formatter).
I've done this by splitting the function into three pieces. The idea is
that one first calls GetTemplateArgumentKind (first function) to
determine the what kind of a parameter this is. Based on that, one can
then use specialized functions to retrieve the correct value. Currently,
I only implement two of these: GetTypeTemplateArgument and
GetIntegralTemplateArgument.
Reviewers: jingham, clayborg
Subscribers: lldb-commits
Differential Revision: https://reviews.llvm.org/D39844
llvm-svn: 318040
Summary:
These tests used to log the error message and return plain bool mainly
because at the time they we written, we did not have a nice way to
assert on llvm::Error values. That is no longer true, so replace this
pattern with a more idiomatic approach.
As a part of this patch, I also move the formatting of
GDBRemoteCommunication::PacketResult values out of the test code, as
that can be useful elsewhere.
Reviewers: zturner, eugene
Subscribers: mgorny, lldb-commits
Differential Revision: https://reviews.llvm.org/D39790
llvm-svn: 317795
Summary:
r316368 broke this build when it introduced a reference to a pthread
function to the Utility module. This caused cmake to generate an
incorrect link line (wrong order of libs) because it did not see the
dependency from Utility to the system libraries. Instead these libraries
were being manually added to each final target.
This changes moves the dependency management from the individual targets
to the lldbUtility module, which is consistent with how llvm does it.
The final targets will pick up these libraries as they will be a part of
the link interface of the module.
Technically, some of these dependencies could go into the host module,
as that's where most of the os-specific code is, but I did not try to
investigate which ones.
Reviewers: zturner, sylvestre.ledru
Subscribers: lldb-commits, mgorny
Differential Revision: https://reviews.llvm.org/D39246
llvm-svn: 316997
Summary:
ArchSpec::SetTriple was taking a Platform as an argument, and used it to
fill in missing pieces of the specified triple. I invert the dependency
by moving this code to other classes. For this purpose, I've created
three new functions.
- HostInfo::GetAugmentedArchSpec: fills in the triple using the host
platform (this used to be implemented by passing a null platform
pointer). By putting this code in the Host module, we can provide a
way to anyone who does not have a platform instance (lldb-server) an
easy way to get Host data.
- Platform::GetAugmentedArchSpec: if you have a platform instance, you
can call this to let it fill in the triple.
- static Platform::GetAugmentedArchSpec: implements the "if platform ==
0 then use_host() else use_platform()" part.
Reviewers: zturner, jingham, clayborg
Subscribers: mgorny, javed.absar, lldb-commits
Differential Revision: https://reviews.llvm.org/D39387
llvm-svn: 316987
Summary:
Without this, the launching of the test inferior may fail if it depends
on some component of the environment (most likely LD_LIBRARY_PATH). This
makes sure we propagate the environment variable to the inferior
process.
Reviewers: eugene
Subscribers: lldb-commits
Differential Revision: https://reviews.llvm.org/D39010
llvm-svn: 316244
Summary:
This adds support for running the lldb-server test suite (currently consisting
of only one test) against the debugserver. Currently, the choice which binary
to test is based on the host system. This will need to be replaced by something
more elaborate if/when lldb-server starts supporting debugging on darwin.
I need to make a couple of tweaks to the test client to work with debugserver:
- debugserver has different command-line arguments - launching code adjusted to
handle that
- debugserver sends duplicate "medata" fields in the stop reply packet -
adjusted stop-reply parsing code to handle that
- debugserver replies to the k packet instead of just dropping the connection -
stopping code adjusted, although we should probably consider aligning the
behavior of the two stubs in this case
Reviewers: jmajors, beanz
Subscribers: srhines, mgorny, lldb-commits
Differential Revision: https://reviews.llvm.org/D35311
llvm-svn: 316010
* Prevent dumping of characters in DumpDataExtractor() with
item_byte_size bigger than 8 bytes. This case is not supported by the
code and results in a crash because the code calls
DataExtractor::GetMaxU64Bitfield() -> GetMaxU64() that asserts for
byte size > 8 bytes.
* Teach DataExtractor::GetMaxU64(), GetMaxU32(), GetMaxS64() and
GetMaxU64_unchecked() how to handle byte sizes that are not a multiple
of 2. This allows DumpDataExtractor() to dump characters and booleans
with item_byte_size in the interval of [1, 8] bytes. Values that are
not a multiple of 2 would previously result in a crash because they
were not handled by GetMaxU64().
llvm-svn: 315444
Summary:
At present, several gtests in the lldb open source codebase are using
#include statements rooted at $(SOURCE_ROOT)/${LLDB_PROJECT_ROOT}.
This patch cleans up this directory/include structure for both CMake and
Xcode build systems.
rdar://problem/33835795
Reviewers: zturner, jingham, beanz
Reviewed By: beanz
Subscribers: emaste, lldb-commits, mgorny
Differential Revision: https://reviews.llvm.org/D36598
llvm-svn: 314849
Summary:
This allows for the stack size to be configured, which isn't
possible with std::thread. Prevents overflowing the stack when
performing complex operations in the task pool on darwin,
where the default pthread stack size is only 512kb.
This also moves TaskPool from Utility to Host.
Reviewers: labath, tberghammer, clayborg
Subscribers: lldb-commits
Differential Revision: https://reviews.llvm.org/D37930
llvm-svn: 313637
Turns out WITH_LOCKDOWN define changes the struct layout and constructor implementation for RNBSocket which is used in debugserver.cpp, so we need to make sure this is consistent.
In the future we should change WITH_LOCKDOWN to be configured in a generated header, but for now we can just set it correctly.
<rdar://problem/33900552>
llvm-svn: 312666
The socket bind address should either be localhost or anyaddress. This bug in the listen behavior was preventing lldb-server from opening sockets for non-localhost connections.
The added test verifies that opening an anyaddress socket works and has a non-zero port assignment.
This should resolve PR34183.
llvm-svn: 312008
The Process/gdb-remote test now requires the LLVMTestingSupport library
that is not installed by LLVM. As a result, when doing an out-of-source
build it fails being unable to find the library. To solve that, build
a local copy of the library when building LLDB with unittests and LLVM
sources available. This is based on how we deal with bundled gtest
sources.
Differential Revision: https://reviews.llvm.org/D36886
llvm-svn: 311355
Summary:
The EncodingError test ensures that trying to encode a multibyte wchar
with a given codepage fails. If setlocale() fails, the encoding is
performed using the current locale, which may or may not fail.
This patch asserts that both setlocale() operations are successful, as
well as falling back to a widely available unibyte encoding for
non-Windows systems.
<rdar://problem/33782806>
Reviewers: zturner, labath, lhames
Reviewed By: zturner
Subscribers: lldb-commits
Differential Revision: https://reviews.llvm.org/D36496
llvm-svn: 310499
While adding IPv6 support to debugserver I broke handling wildcard addresses and fully qualified address filtering. This patch resolves that bug and adds a test for matching the address "*".
<rdar://problem/32947613>
llvm-svn: 307957
blocks of memory, and if the final bytes of that block look like a long
x86 instruction, it can cause the llvm disassembler to read past the end
of the buffer. Use the maximum allowed instruction length that we pass
to the llvm disassembler as a way to limit this to the size of the buffer.
An example of how to trigger this is when lldb does a function call, it
puts a breakpoint on the beginning of main() and uses that as the return
address from the function call. When we stop at that location, lldb may
try to find the first frame up the stack. Because this is on the first
instruction of a function, it will get the word-size value at the stack
pointer and assume that this was the caller's pc value. But this is random
stack memory and could point to anything - an object in memory, something
in the data section, whatever. And if we have a symbol for that thing,
we'll try to disassemble it.
This was leading to infrequent crashes in customer scenarios; figured out
what was happening with address sanitizer.
<rdar://problem/30463256>
llvm-svn: 307454
Summary:
The classes have no dependencies, and they are used both by lldb and
lldb-server, so it makes sense for them to live in the lowest layers.
Reviewers: zturner, jingham
Subscribers: emaste, mgorny, lldb-commits
Differential Revision: https://reviews.llvm.org/D34746
llvm-svn: 306682
Summary:
Fetching an input file required about five lines of code, and this was
repeated in multiple unit tests, with slight variations. Add a helper
function for doing that into the lldbUtilityMocks module (which I rename
to lldbUtilityHelpers to commemorate the fact it includes more than
mocks)
Reviewers: zturner, eugene
Subscribers: emaste, mgorny, lldb-commits
Differential Revision: https://reviews.llvm.org/D34683
llvm-svn: 306668
Summary:
The instruction pattern:
and $-16, %esp
sub $imm, %esp
...
lea imm(%ebp), %esp
appears when the compiler is realigning the stack (for example in
main(), or almost everywhere with -mstackrealign switch). The "and"
instruction is very difficult to model, but that's not necessary, as
these frames are always %ebp-based (the compiler also needs a way to
restore the original %esp). Therefore the plans we were generating for
these function were almost correct already. The only place we were doing
it wrong were the last instructions of the epilogue (usually just
"ret"), where we had to revert to %esp-based unwinding, as the %ebp had
been popped already.
This was wrong because our "distance of esp from cfa" counter had picked
up the "sub" instruction (and incremented the counter) but it had not
seen that the register was reset by the "lea" instruction.
This patch fixes that shortcoming, and adds a test for handling
functions like this.
I have not been able to tickle the compiler into producing a 64-bit
function with this pattern, but I don't see a reason why it couldn't
produce it, if it chose to, so I add a x86_64 test as well.
Reviewers: jasonmolenda, tberghammer
Subscribers: lldb-commits
Differential Revision: https://reviews.llvm.org/D34750
llvm-svn: 306666
Summary:
instead of using a boolean to differentiate between the two section
types, use an enum to make the intent clearer.
I also remove the RegisterKind argument from the constructor, as this
can be deduced from the Type argument.
Reviewers: clayborg, jasonmolenda
Subscribers: lldb-commits
Differential Revision: https://reviews.llvm.org/D34681
llvm-svn: 306521
Summary:
This patch implements support for Intel(R) Processor Trace
in lldb server. The changes have support for
starting/stopping and reading the trace data. The code
is only available on Linux versions where the perf
attributes for aux buffers are available.
The patch also consists of Unit tests for testing the
core buffer reading function.
Reviewers: lldb-commits, labath, clayborg, zturner, tberghammer
Reviewed By: labath, clayborg
Subscribers: mgorny
Differential Revision: https://reviews.llvm.org/D33674
llvm-svn: 306516
Summary:
This is a beefed-up version of D33504, which adds support for dwarf 4
debug_frame section format.
The main difference here is that the decision whether to use eh_frame or
debug_frame is done on a per-function basis instead of per-object file.
This is necessary because one module can contain both sections (for
example, the start files added by the linker will typically pull in
eh_frame), but we want to be able to access both, for maximum
information.
I also add unit test for parsing various CFI formats (eh_frame,
debug_frame v3 and debug_frame v4).
Reviewers: jasonmolenda, clayborg
Subscribers: mgorny, aprantl, abidh, lldb-commits, tatyana-krasnukha
Differential Revision: https://reviews.llvm.org/D34613
llvm-svn: 306397
Summary:
It had a dependency on StringConvert and file reading code, which is not
in Utility. I've replaced that code by equivalent llvm operations.
I've added a unit test to demonstrate that parsing a file still works.
Reviewers: zturner, jingham
Subscribers: kubamracek, mgorny, lldb-commits
Differential Revision: https://reviews.llvm.org/D34625
llvm-svn: 306394
Instead of every test creating a client-server combo, do that in the
SetUp method of the test fixture. This also means that we can rely on
gtest to not run the test if the SetUp method fails and delete the
if(HasFailure) calls.
llvm-svn: 306013
Summary:
A number of places were trying to decode the result of wait(). Add a simple
utility function that does that and a struct that encapsulates the
decoded result. Then also provide a pretty-printer for that class.
Reviewers: zturner, krytarowski, eugene
Subscribers: lldb-commits, mgorny
Differential Revision: https://reviews.llvm.org/D33998
llvm-svn: 305689
Summary:
ProcessLauncherPosix was using posix_spawn for launching the process,
but this function is not available on all platforms we support, and even
where it was avaialable, it did not support the full range of options we
require for launching (most importantly, launching in stop-on-entry
mode). For these reasons, the set of ifdefs around these functions has
grown untractably large, and we were forced to implement our own
launcher from more basic primitives anyway (ProcessLauncherPosixFork --
used on Linux, Android, and NetBSD).
Therefore, I remove this class, and move the relevant parts of the code
to the darwin-specific Host.mm file. This is the platform that code was
originally written for anyway, and it's the only platform where this
implementation makes sense (e.g. the lack of the "thread-specific
working directory" concept makes these functions racy on all other
platforms). This allows us to remove a lot of ifdefs and simplify the
code.
Effectively, the only change this introduces is that FreeBSD will now
use the fork-based launcher instead of posix_spawnp. That sholdn't be a
problem as this approach works at least on one other BSD-based system
already.
Reviewers: krytarowski, emaste, jingham
Subscribers: srhines, mgorny, lldb-commits
Differential Revision: https://reviews.llvm.org/D34236
llvm-svn: 305686
This creates a new library called BinaryFormat that has all of
the headers from llvm/Support containing structure and layout
definitions for various types of binary formats like dwarf, coff,
elf, etc as well as the code for identifying a file from its
magic.
Differential Revision: https://reviews.llvm.org/D33843
llvm-svn: 304864
Summary:
This is a new C++ test framework based on Google Test, and one working
example test.
The intention is to replace the existing tests in
packages/Python/lldbsuite/test/tools/lldb-server/ with this suite
and use this framework for all new client server tests.
Reviewers: labath, beanz
Reviewed By: labath, beanz
Subscribers: beanz, emaste, zturner, tberghammer, takuto.ikuta, krytarowski, mgorny, lldb-commits
Differential Revision: https://reviews.llvm.org/D32930
Patch by Jason Majors <jmajors@google.com>
llvm-svn: 304793
Summary:
- Added API to access data types
-- integer, double, array, string, boolean and dictionary data types
-- Earlier user had to parse through the string output to get these
values
- Added Test cases for API testing
- Added new StructuredDataType enum in public include file
-- Replaced locally-defined enum in StructuredData.h with this new
one
-- Modified other internal files using this locally-defined enum
Signed-off-by: Abhishek Aggarwal <abhishek.a.aggarwal@intel.com>
Reviewers: clayborg, lldb-commits
Reviewed By: clayborg
Subscribers: labath
Differential Revision: https://reviews.llvm.org/D33434
llvm-svn: 304138
Summary:
The changes consist of new packets for trace manipulation and
trace collection. The new packets are also documented. The packets
are capable of providing custom trace specific parameters to start
tracing and also retrieve such configuration from the server.
Reviewers: clayborg, lldb-commits, tberghammer, labath, zturner
Reviewed By: clayborg, labath
Subscribers: krytarowski, lldb-commits
Differential Revision: https://reviews.llvm.org/D32585
llvm-svn: 303972
Summary:
This adds functions to convert between llvm::Error and Status classes.
Posix errors in Status are represented as llvm::ECError, and the rest as
llvm::StringError.
For the conversion from Error to Status, ECError is again represented as
a posix error in Status, while other errors are stored as generic errors
and only the string value is preserved.
Reviewers: zturner, jingham
Subscribers: lldb-commits
Differential Revision: https://reviews.llvm.org/D33241
llvm-svn: 303348
The Timer destructor would grab a global mutex in order to update
execution time. Add a class to define a category once, statically; the
class adds itself to an atomic singly linked list, and thus subsequent
updates only need to use an atomic rather than grab a lock and perform a
hashtable lookup.
Differential Revision: https://reviews.llvm.org/D32823
Patch by Scott Smith <scott.smith@purestorage.com>.
llvm-svn: 303058
This renames the LLDB error class to Status, as discussed
on the lldb-dev mailing list.
A change of this magnitude cannot easily be done without
find and replace, but that has potential to catch unwanted
occurrences of common strings such as "Error". Every effort
was made to find all the obvious things such as the word "Error"
appearing in a string, etc, but it's possible there are still
some lingering occurences left around. Hopefully nothing too
serious.
llvm-svn: 302872
Summary:
Many parallel tasks just want to iterate over all the possible numbers from 0 to N-1. Rather than enqueue N work items, instead just "map" the function across the requested integer space.
Reviewers: clayborg, labath, tberghammer, zturner
Reviewed By: clayborg, zturner
Subscribers: zturner, lldb-commits
Differential Revision: https://reviews.llvm.org/D32757
Patch by Scott Smith <scott.smith@purestorage.com>.
llvm-svn: 302223
Summary:
This adds a couple of unit tests to the MainLoop class. To get the
kqueue based version of the signal handling passing, I needed to
modify the implementation a bit to make the queue object persistent.
Otherwise, only the signals which are send during the Run call would get
processed, which did not match the ppoll behaviour.
I also took the opportunity to remove the ForEach template functions and
replace them with something more reasonable.
Reviewers: beanz, eugene
Subscribers: lldb-commits, mgorny
Differential Revision: https://reviews.llvm.org/D32753
llvm-svn: 302133
Summary:
If we have symbol information in a separate file, we need to be very
careful about presenting a unified section view of module to the rest of
the debugger. ObjectFileELF had code to handle that, but it was being
overly cautious -- the section->GetFileSize()!=0 meant that the
unification would fail for sections which do not occupy any space in the
object file (e.g., .bss). In my case, that manifested itself as not
being able to display the values of .bss variables properly as the
section associated with the variable did not have it's load address set
(because it was not present in the unified section list).
I test this by making sure the unified section list and the variables
refer to the same section.
Reviewers: eugene, zturner
Subscribers: tberghammer, lldb-commits, mgorny
Differential Revision: https://reviews.llvm.org/D32434
llvm-svn: 301917
This support was landed in r300579, and reverted in r300669 due to failures on the bots.
The failures were caused by sockets not being properly closed, and this updated version of the patches should resolve that.
Summary from the original change:
This patch adds IPv6 support to LLDB/Host's TCP socket implementation. Supporting IPv6 involved a few significant changes to the implementation of the socket layers, and I have performed some significant code cleanup along the way.
This patch changes the Socket constructors for all types of sockets to not create sockets until first use. This is required for IPv6 support because the socket type will vary based on the address you are connecting to. This also has the benefit of removing code that could have errors from the Socket subclass constructors (which seems like a win to me).
The patch also slightly changes the API and behaviors of the Listen/Accept pattern. Previously both Listen and Accept calls took an address specified as a string. Now only listen does. This change was made because the Listen call can result in opening more than one socket. In order to support listening for both IPv4 and IPv6 connections we need to open one AF_INET socket and one AF_INET6 socket. During the listen call we construct a map of file descriptors to addrin structures which represent the allowable incoming connection address. This map removes the need for taking an address into the Accept call.
This does have a change in functionality. Previously you could Listen for connections based on one address, and Accept connections from a different address. This is no longer supported. I could not find anywhere in LLDB where we actually used the APIs in that way. The new API does still support AnyAddr for allowing incoming connections from any address.
The Listen implementation is implemented using kqueue on FreeBSD and Darwin, WSAPoll on Windows and poll(2) everywhere else.
https://reviews.llvm.org/D31823
llvm-svn: 301492
Summary:
the reason for this is two-fold:
- getaddrinfo without the extra arguments will return the same
(network-level) address multiple times, once for each supported
transport protocol, which is not what is usually intended (it certainly
wasn't in D31823)
- it enables us to rewrite the getaddrinfo member function in terms of
the static GetAddressInfo function.
Reviewers: beanz, tberghammer
Subscribers: lldb-commits
Differential Revision: https://reviews.llvm.org/D32357
llvm-svn: 301168
Summary:
MergeFrom was updating the architecture if the target triple did not
have it set. However, it was leaving the core field as invalid. This
resulted in assertion failures in core file tests as a missing core
meant we were unable to compute the address byte size properly.
Add a unit test for the new behaviour.
Reviewers: jingham, clayborg
Subscribers: lldb-commits
Differential Revision: https://reviews.llvm.org/D32221
llvm-svn: 300836
The break the linux bots (and probably any other machine which would
run the test suite in a massively parallel way). The problem is that it
can happen that we only successfully create an IPv6 listening socket
(because the relevant IPv4 port is used by another process) and then the
connecting side attempts to connect to the IPv4 port and fails.
It's not very obvious how to fix this problem, so I am reverting this
until we come up with a solution.
llvm-svn: 300669
Summary: This patch adds IPv6 support to debugserver. It follows a similar pattern to the changes proposed for LLDB/Host except that the listen implementation is only with kqueue(2) because debugserver is only supported on Darwin.
Reviewers: jingham, jasonmolenda, clayborg
Reviewed By: clayborg
Subscribers: mgorny, lldb-commits
Differential Revision: https://reviews.llvm.org/D31824
llvm-svn: 300580
Summary:
This patch adds IPv6 support to LLDB/Host's TCP socket implementation. Supporting IPv6 involved a few significant changes to the implementation of the socket layers, and I have performed some significant code cleanup along the way.
This patch changes the Socket constructors for all types of sockets to not create sockets until first use. This is required for IPv6 support because the socket type will vary based on the address you are connecting to. This also has the benefit of removing code that could have errors from the Socket subclass constructors (which seems like a win to me).
The patch also slightly changes the API and behaviors of the Listen/Accept pattern. Previously both Listen and Accept calls took an address specified as a string. Now only listen does. This change was made because the Listen call can result in opening more than one socket. In order to support listening for both IPv4 and IPv6 connections we need to open one AF_INET socket and one AF_INET6 socket. During the listen call we construct a map of file descriptors to addrin structures which represent the allowable incoming connection address. This map removes the need for taking an address into the Accept call.
This does have a change in functionality. Previously you could Listen for connections based on one address, and Accept connections from a different address. This is no longer supported. I could not find anywhere in LLDB where we actually used the APIs in that way. The new API does still support AnyAddr for allowing incoming connections from any address.
The Listen implementation is implemented using kqueue on FreeBSD and Darwin, WSAPoll on Windows and poll(2) everywhere else.
Reviewers: zturner, clayborg
Subscribers: jasonmolenda, labath, lldb-commits, emaste
Differential Revision: https://reviews.llvm.org/D31823
llvm-svn: 300579
Summary:
This patch refactors the CMake build system's support for building debugserver to allow us to build the majority of debugserver's sources into the debugserverCommon library which can then be reused by unit tests.
The first unit test I've written tests debug server's ability to accept incoming connections from LLDB. The test forks the process, and one side creates a listening socket using debugserver's socket API, the other side creates a transmitting socket using LLDB's TCPSocket class.
I have no clue where to even start getting this connected into the LLDB Xcode project, so for now these tests are CMake-only.
Reviewers: zturner, labath, jasonmolenda
Subscribers: lldb-commits, mgorny
Differential Revision: https://reviews.llvm.org/D31357
llvm-svn: 300111
Current implementation of CPlusPlusLanguage::MethodName::Parse() doesn't
get anywhere close to covering full extent of possible function declarations.
It causes incorrect behavior in avoid-stepping and sometimes messes
printing of thread backtrace.
This change implements more methodical parsing logic based on clang
lexer and simple recursive parser.
Examples:
void std::vector<Class, std::allocator<Class>>::_M_emplace_back_aux<Class const&>(Class const&)
void (*&std::_Any_data::_M_access<void (*)()>())()
Previous version of this change (D31451) was rolled back due to an issue
with Objective-C selectors being incorrectly recognized as a C++ identifier.
Differential Revision: https://reviews.llvm.org/D31451
llvm-svn: 299721
This caused a failure in the test case:
functionalities/breakpoint/objc/TestObjCBreakpoints.py
When we are parsing up names we stick interesting parts of the names
in various buckets, one of which is the ObjC selector bucket. The new
C++ name parser must be interfering with this process somehow.
<rdar://problem/31439305>
llvm-svn: 299489
Current implementation of CPlusPlusLanguage::MethodName::Parse() doesn't
get anywhere close to covering full extent of possible function declarations.
It causes incorrect behavior in avoid-stepping and sometimes messes
printing of thread backtrace.
This change implements more methodical parsing logic based on clang
lexer and simple recursive parser.
Examples:
void std::vector<Class, std::allocator<Class>>::_M_emplace_back_aux<Class const&>(Class const&)
void (*&std::_Any_data::_M_access<void (*)()>())()
Differential Revision: https://reviews.llvm.org/D31451
llvm-svn: 299374
Summary:
This aims to verify the validity of the response from the debugging
server in GDBRemoteCommunicationClient::GetMemoryRegionInfo. I was
working with ds2 (https://github.com/facebook/ds2) and encountered a bug
that caused the server's response to have a 'size' value of 0, which
caused lldb to behave incorrectly.
Reviewers: k8stone, labath, clayborg
Reviewed By: labath, clayborg
Subscribers: clayborg, sas, lldb-commits
Differential Revision: https://reviews.llvm.org/D31485
Change by Alex Langford <apl@fb.com>
llvm-svn: 299239
GetNormalizedPath seems to be slow, so it's worth
shortcutting it if possible. This change does so
when the filenames and not equal and we can tell
GetNormalizedPath would not make them equal.
Also added a test for "." final component since that
was missing.
llvm-svn: 298876
This was causing a test failure in one of LLDB's tests which
specifically dealt with a limitation in LLVM's implementation
of home_directory() that LLDB's own implementation had worked
around.
This limitation has been addressed in r298513 on the LLVM side,
so the failing test (which is now unnecessary as the limitation
no longer exists) was removed in r298519, allowing this patch to
be re-submitted without modification.
llvm-svn: 298526
Summary:
ProcFileReader is the cause of the dependency from Host to ProcessLinux
module. Since it's interface is also obsolete (ReadIntoDataBuffer is
trivially replaceable by llvm::MemoryBuffer functions and
ProcessLineByLine is trivially implementable with StringRefs), instead
of moving it around I'm planning to obliterate it. This is the first
step, where I remove a couple of occurences in linux/Host.cpp, and
modernize some code around that.
I have introduced linux/Support.h, which holds two utility functions
now, whose resposibility is to construct the appropriate proc file names
-- the only useful feature of ProcFileReader.
I add a couple of tests for these functions, and for
Host::GetProcessInfo. It's worth noting that these are the first
host-specific unit tests in lldb.
Reviewers: zturner, eugene
Subscribers: srhines, lldb-commits, mgorny
Differential Revision: https://reviews.llvm.org/D30942
llvm-svn: 297843
Summary:
previously we switched to llvm streams for log output, this completes
the switch for the error streams.
I also clean up the includes and remove the unused argument from
DisableAllLogChannels().
This required adding a bit of boiler plate to convert the output in the
command interpreter, but that should go away when we switch command
results to use llvm streams as well.
Reviewers: zturner, eugene
Subscribers: lldb-commits, emaste
Differential Revision: https://reviews.llvm.org/D30894
llvm-svn: 297812
One of the file name templates was occasionally generating the name
"fooa***", which conflicted with the one of the tests expectation that
there is only one item beginning with "fooa".
There doesn't seem to be a good reason for using random file templates
here, so just switch to a fixed set of files to increase
reproducibility.
llvm-svn: 297743
This reverts commit a6a29374662716710f80c8ece96629751697841e.
It has a few compilation failures that I don't have time to fix
at the moment.
llvm-svn: 297589
There were a couple of problems with this function on Windows. Different
separators and differences in how tilde expressions are resolved for
starters, but in addition there was no clear indication of what the
function's inputs or outputs were supposed to be, and there were no tests
to demonstrate its use.
To more easily paper over the differences between Windows paths,
non-Windows paths, and tilde expressions, I've ported this function to use
LLVM-based directory iteration (in fact, I would like to eliminate all of
LLDB's directory iteration code entirely since LLVM's is cleaner / more
efficient (i.e. it invokes fewer stat calls)). and llvm's portable path
manipulation library.
Since file and directory completion assumes you are referring to files and
directories on your local machine, it's safe to assume the path syntax
properties of the host in doing so, so LLVM's APIs are perfect for this.
I've also added a fairly robust set of unit tests. Since you can't really
predict what users will be on your machine, or what their home directories
will be, I added an interface called TildeExpressionResolver, and in the
unit test I've mocked up a fake implementation that acts like a unix
password database. This allows us to configure some fake users and home
directories in the test, so we can exercise all of those hard-to-test
codepaths that normally otherwise depend on the host.
Differential Revision: https://reviews.llvm.org/D30789
llvm-svn: 297585
Summary:
This fixes two threading issues in the logging code. The access to the
mask and options flags had data races when we were trying to
enable/disable logging while another thread was writing to the log.
Since we can log from almost any context, and we want it to be fast, so
I avoided locking primitives and used atomic variables instead. I have
also removed the (unused) setters for the mask and flags to make sure
that the only way to set them is through the enable/disable channel
functions.
I also add tests, which when run under tsan, verify that the use cases
like "doing an LLDB_LOGV while another thread disables logging" are
data-race-free.
Reviewers: zturner, clayborg
Subscribers: lldb-commits
Differential Revision: https://reviews.llvm.org/D30702
llvm-svn: 297368
If QPassSignals packaet is supported by lldb-server, lldb-client will
utilize it and ask the server to ignore signals that don't require stops
or notifications.
Such signals will be immediately re-injected into inferior to continue
normal execution.
Differential Revision: https://reviews.llvm.org/D30520
llvm-svn: 297231
This functionality is subsumed by DataBufferLLVM, which is
also more efficient since it will try to mmap. However, we
don't yet support mmaping writable private sections, and in
some cases we were using ReadFileContents and then modifying
the buffer. To address that I've added a flag to the
DataBufferLLVM methods that allow you to map privately, which
disables the mmaping path entirely. Eventually we should teach
DataBufferLLVM to use mmap with writable private, but that is
orthogonal to this effort.
Differential Revision: https://reviews.llvm.org/D30622
llvm-svn: 297095
it was accessing the details of the Log class directly. Let it go
through the channel class instead.
This also discovered a bug when we were setting but not clearing the log
options when enabling a channel.
llvm-svn: 297053
All references to Host and Core have been removed, so this
class can now safely be lowered into Utility.
Differential Revision: https://reviews.llvm.org/D30559
llvm-svn: 296909
Prior to MSVC 2015 we had to manually include this header any
time we were going to include <thread> or <future> due to a
bug in MSVC's STL implementation. This has been fixed in MSVC
for some time now, and we require VS 2015 minimum, so we can
remove this across all subprojects.
llvm-svn: 296906
Summary:
Use StringRef and ArrayRef where possible. This adds an accessor to the
Args class to get a view of the arguments as ArrayRef<const char *>.
Reviewers: zturner
Subscribers: lldb-commits
Differential Revision: https://reviews.llvm.org/D30402
llvm-svn: 296592
load_size should be 64-bit unconditionally to match the underlying API.
This makes sure the MAX value correctly signals to auto-detect the file
size when mmap()ing.
llvm-svn: 296334
The channel refactor introduced a regression where we were not honoring
the log options passed when enabling the channel. Fix that and add a
test.
llvm-svn: 296329
After a series of patches on the LLVM side to get the mmaping
code up to compatibility with LLDB's needs, it is now ready
to go, which means LLDB's custom mmapping code is redundant.
So this patch deletes it all and uses LLVM's code instead.
In the future, we could take this one step further and delete
even the lldb DataBuffer base class and rely entirely on
LLVM's facilities, but this is a job for another day.
Differential Revision: https://reviews.llvm.org/D30054
llvm-svn: 296159
Summary:
The code was attempting to copy the shared pointer member in order to
guarantee atomicity, but this is not enough. Instead, protect the
pointer with a proper read-write mutex.
This bug was present here for a long time, but my recent refactors must
have altered the timings slightly, such that now this fails fairly often
when running the tests: the test runner runs the "log disable" command
just as the thread monitoring the lldb-server child is about to report
that the server has exited.
I add a test case for this. It's not possible to reproduce the race
deterministically in normal circumstances, but I have verified that
before the fix, the test failed when run under tsan, and was running
fine afterwards.
Reviewers: clayborg, zturner
Subscribers: lldb-commits
Differential Revision: https://reviews.llvm.org/D30168
llvm-svn: 295712
Summary:
I originally set out to move the NameMatches closer to the relevant
function and add some unit tests. However, in the process I've found a
couple of bugs in the implementation:
- the early exits where not always correct:
- (test==pattern) does not mean the match will always suceed because
of regular expressions
- pattern.empty() does not mean the match will fail because the "" is
a valid prefix of any string
So I cleaned up those and added some tests. The only tricky part here
was that regcomp() implementation on darwin did not recognise the empty
string as a regular expression and returned an REG_EMPTY error instead.
The simples fix here seemed to be to replace the empty expression with
an equivalent non-empty one.
Reviewers: clayborg, zturner
Subscribers: mgorny, lldb-commits
Differential Revision: https://reviews.llvm.org/D30094
llvm-svn: 295651
The way of injecting an error into the printf call was not working on
darwin - the C library still happily format the character. It only
returns an error after we use a wide character that does not fit into a
single byte, so switch the test to use that.
llvm-svn: 295443
Changes wrt. previous version:
- add #include <atomic>: fix build on windows
- add extra {} around the string literals used to initialize
llvm::StringLiteral: fix gcc build
llvm-svn: 295442
Summary:
We currently have two log channel registration mechanisms. One uses a
set of function pointers and the other one is based on the
PluginManager.
The PluginManager dependency is unfortunate, as logging
is also used in lldb-server, and the PluginManager pulls in a lot of
classes which are not used in lldb-server.
Both approach have the problem that they leave too much to do for the
user, and so the individual log channels end up reimplementing command
line argument parsing, category listing, etc.
Here, I replace the PluginManager-based approach with a one. The new API
is more declarative, so the user only needs to specify the list of list
of channels, their descriptions, etc., and all the common tasks like
enabling/disabling categories are hadled by common code. I migrate the
LogChannelDWARF (only user of the PluginManager method) to the new API.
In the follow-up commits I'll replace the other channels with something
similar.
Reviewers: clayborg, zturner, beanz
Subscribers: aprantl, lldb-commits
Differential Revision: https://reviews.llvm.org/D29895
llvm-svn: 295190
With this patch, the only dependency left is from Utility
to Host. After this is broken, Utility will finally be
standalone.
Differential Revision: https://reviews.llvm.org/D29909
llvm-svn: 295088
and use it in the appropriate log statements.
Formatting of chrono types in log messages was very clunky. This should
make it much nicer to use and give better output. For details of the
formatting options see the chrono formatter in llvm.
llvm-svn: 294738
Summary:
This converts LLDB's logging to use llvm streams instead of
lldb_private::Stream and friends. The changes are mostly
straight-forward and amount to s/lldb_private::Stream/llvm::raw_ostream.
The part worth calling out is the rewrite of the StreamCallback class.
Previously this class contained a per-thread buffer of data written. I
assume this had something to do with it trying to make sure each log
line is delivered as a single event, instead of multiple (possibly
interleaved) events. However, this is no longer relevant as the Log
class already writes things to a temporary buffer and then delivers the
message as a single "write", so I have just removed the code in
question.
Reviewers: zturner, clayborg
Subscribers: emaste, lldb-commits, mgorny
Differential Revision: https://reviews.llvm.org/D29615
llvm-svn: 294736
Summary:
This patch removes the over-specified dependencies from LLDBDependencies and instead relies on the dependencies as expressed in each library and tool.
This also removes the library looping in favor of allowing CMake to do its thing. I've tested this patch on Darwin, and found no issues, but since linker semantics vary by system I'll also work on testing it on other platforms too.
Help testing would be greatly appreciated.
Reviewers: labath, zturner
Subscribers: danalbert, srhines, mgorny, jgosnell, lldb-commits
Differential Revision: https://reviews.llvm.org/D29352
llvm-svn: 294515
Summary:
Per discussion in D28616, having two ways two request logging (log
enable lldb XXX verbose && log enable -v lldb XXX) is confusing. This
removes the first option and standardizes all code to use the second
one.
I've added a LLDB_LOGV macro as a shorthand for if(log &&
log->GetVerbose()) and switched most of the affected log statements to
use that (I've only left a couple of cases that were doing complex
computations in an if(log) block).
Reviewers: jingham, zturner
Subscribers: lldb-commits
Differential Revision: https://reviews.llvm.org/D29510
llvm-svn: 294113
This moves the following classes from Core -> Utility.
ConstString
Error
RegularExpression
Stream
StreamString
The goal here is to get lldbUtility into a state where it has
no dependendencies except on itself and LLVM, so it can be the
starting point at which to start untangling LLDB's dependencies.
These are all low level and very widely used classes, and
previously lldbUtility had dependencies up to lldbCore in order
to use these classes. So moving then down to lldbUtility makes
sense from both the short term and long term perspective in
solving this problem.
Differential Revision: https://reviews.llvm.org/D29427
llvm-svn: 293941
We started passing the list of libraries to link to the
add_lldb_unittest macro, but that macro wasn't actually doing anything
with them. Fix that.
llvm-svn: 293913
Summary:
Problem:
There are three filelds in the ELF header - e_phnum, e_shnum, and e_shstrndx -
that could be bigger than 64K and therefore do not fit in 16 bits reserved for
them in the header. If this happens, pretty often there is a special section at
index 0 which contains their real values for these fields in the section header
in the fields sh_info, sh_size, and sh_link respectively.
Fix:
- Rename original fields in the header declaration. We want to have them around
just in case.
- Reintroduce these fields as 32-bit members at the end of the header. By default
they are initialized from the header in Parse() method.
- In Parse(), detect the situation when the header might have been extended into
section info #0 and try to read it from the same data source.
- ObjectFileELF::GetModuleSpecifications accesses some of these fields but the
original parse uses too small data source. Re-parse the header if necessary
using bigger data source.
- ProcessElfCore::CreateInstance uses header with potentially sentinel values,
but it does not access these fields, so a comment here is enough.
Reviewers: labath
Reviewed By: labath
Subscribers: davidb, lldb-commits, mgorny
Differential Revision: https://reviews.llvm.org/D29095
Author: Eugene Birukov <eugenebi@hotmail.com>
llvm-svn: 293714
This adds the LLDB_LOG macro, which enables one to write more succinct log
statements.
if (log)
log->Printf("log something: %d", var);
becomes
LLDB_LOG(log, "log something: {0}, var);
The macro still internally does the "if(log)" dance, so the arguments are only
evaluated if logging is enabled, meaning it has the same overhead as the
previous syntax.
Additionally, the log statements will be automatically prefixed with the file
and function generating the log (if the corresponding new argument to the "log
enable" command is enabled), so one does not need to manually specify this in
the log statement.
It also uses the new llvm formatv syntax, which means we don't have to worry
about PRIx64 macros and similar, and we can log complex object (llvm::StringRef,
lldb_private::Error, ...) more easily.
Differential Revision: https://reviews.llvm.org/D27459
llvm-svn: 292360
Summary:
PrependPathComponent was unconditionally inserting path separators between the
path components. This is not correct if the prepended path is "/", which caused
problems down the line. Fix the function to use the same algorithm as
AppendPathComponent and add a test. This fixes one part of llvm.org/pr31611.
Reviewers: clayborg, zturner
Subscribers: lldb-commits
Differential Revision: https://reviews.llvm.org/D28677
llvm-svn: 292100
Summary:
The formatter supports the same options as the string-like classes, i.e. the
ability to truncate the displayed string. I don't anticipate it would be much
used, but it seems consistent.
Reviewers: zturner, clayborg
Subscribers: mgorny, lldb-commits
Differential Revision: https://reviews.llvm.org/D28519
llvm-svn: 291759
Previously it failed to handle nested types inside templated classes
making it impossible to look up these types using the fully qualified
name.
Differential revision: https://reviews.llvm.org/D28466
llvm-svn: 291559
Split the PDB tests into DWARF test and actual PDB tests, the latter
requiring DIA SDK. Use the new LLVMConfig.cmake LLVM_ENABLE_DIA_SDK
symbol to enable the PDB tests rather than relying on
llvm/Config/config.h private include file that is not available when
building standalone.
Differential Revision: https://reviews.llvm.org/D26249
llvm-svn: 290819
This adds formatv-backed formatting functions in various
places in LLDB such as StreamString, logging, constructing
error messages, etc. A couple of callsites are changed
from Printf style syntax to formatv style syntax to
illustrate its usage. Additionally, a FileSpec formatter
is introduced so that FileSpecs can be formatted natively.
Differential Revision: https://reviews.llvm.org/D27632
llvm-svn: 289922
LLVM build trees export the gtest library through a special export set. If you're building against a build tree you shouldn't need to re-add gtest, but if you're building against an installed LLVM you do.
llvm-svn: 288691
The core of the function was actually handling them correctly. However, the
early exit was being too optimistic and did not give the function a chance to
fire if the path did not contain dots as well.
Fix that and add a couple of unit tests.
llvm-svn: 288247
Summary:
Communication classes use the Timeout<> class to specify the timeout. Listener
class was converted to chrono some time ago, but it used a different meaning for
a timeout of zero (Listener: infinite wait, Communication: no wait). Instead,
Listener provided separate functions which performed a non-blocking event read.
This converts the Listener class to the new Timeout class, to improve
consistency. It also allows us to get merge the different GetNextEvent*** and
WaitForEvent*** functions into one. No functional change intended.
Reviewers: jingham, clayborg, zturner
Subscribers: lldb-commits
Differential Revision: https://reviews.llvm.org/D27136
llvm-svn: 288238
This replaces the raw integer timeout parameters in the class with their
chrono-based equivalents. To achieve this, I have moved the Timeout class to a
more generic place and added a quick unit test for it.
llvm-svn: 287920
the chrono library there uses long long as the underlying chrono type, but
defines int64_t as long (or the other way around, I am not sure). In any case,
this caused the implicit conversion to not trigger. This should address that.
Also fix up the relevant unit test.
llvm-svn: 287867
This is a large API change that removes the two functions from
StreamString that return a std::string& and a const std::string&,
and instead provide one function which returns a StringRef.
Direct access to the underlying buffer violates the concept of
a "stream" which is intended to provide forward only access,
and makes porting to llvm::raw_ostream more difficult in the
future.
Differential Revision: https://reviews.llvm.org/D26698
llvm-svn: 287152
This is forcing to use Error::success(), which is in a wide majority
of cases a lot more readable.
Differential Revision: https://reviews.llvm.org/D26481
llvm-svn: 286561
The mock server was listening for only one packet (I forgot to put a loop around
it), which caused the client to stall in debug builds, as the timeout there is
1000 seconds. In case of a release builds the test would just silently succeed as
the tested function does not check or report errors (which should be fixed).
This fixes the test by adding the server loop. Since the test was taking quite a
long time now (8s), I have added a parameter to control the amount of data sent
(default 4MB), and call it with a smaller value in the test, to make the test run
faster.
llvm-svn: 285992
I did not take into account that the output of the Dump function will be
non-deterministic. Fix that by increasing of the times, this also makes the test
check that the dump function sorts the output.
llvm-svn: 285892
Summary:
While removing TimeValue from this class I noticed a lot of room for small
simplifications here. Main are:
- instead of complicated start-stop dances to compute own time, each Timer
just starts the timer once, and keeps track of the durations of child
timers. Then the own time can be computed at the end by subtracting the two
values.
- remove double accounting in TimerStack - the stack object already knows the
number of timers.
The interface does not lend itself well to unit testing, but I have added a
couple of tests which can (and did) catch any obvious errors.
Reviewers: tberghammer, clayborg
Subscribers: mgorny, lldb-commits
Differential Revision: https://reviews.llvm.org/D26243
llvm-svn: 285890
Include the gtest utility directory from LLVM sources when performing
a stand-alone build of LLDB. This is necessary to have a correct gtest
library to link tests against, as the one used by LLVM is not installed
(and not supposed to be). This is the same approach as used in clang.
Differential Revision: https://reviews.llvm.org/D26245
llvm-svn: 285865
Summary:
The only usage there was in GetModificationTime(). I also took the opportunity
to move this function from FileSpec to the FileSystem class - since we are
using FileSpecs to also represent remote files for which we cannot (easily)
retrieve modification time, it makes sense to make the decision to get the
modification time more explicit.
The new function returns a llvm::sys::TimePoint<>. To aid the transition
from TimeValue, I have added a constructor to it which enables implicit
conversion from a time_point.
Reviewers: zturner, clayborg
Subscribers: mehdi_amini, tberghammer, danalbert, beanz, mgorny, lldb-commits
Differential Revision: https://reviews.llvm.org/D25392
llvm-svn: 285702
for floating point registers was not recording them correctly. I needed to
change the EmulateInstructionARM64 unwind plans from using the DWARF
register numbering scheme to using the LLDB register numbering scheme
(because dwarf doesn't define register numbers for the 64-bit "d" registers).
Updated the EmulateInstructionARM64 unit tests to work with the LLDB
register numbering scheme and added a unit test to check the floating
point register spills & restores are correctly recorded.
https://reviews.llvm.org/D25864
<rdar://problem/28745483>
llvm-svn: 285662
Summary:
Most of the changes are very straight-forward, the only tricky part was the
"packet speed-test" function, which is very time-heavy. As the function was
completely untested, I added a quick unit smoke test for it.
Reviewers: clayborg, zturner
Subscribers: lldb-commits
Differential Revision: https://reviews.llvm.org/D25391
llvm-svn: 285602
Summary:
.. handling for windows path was completely broken because the function was
expecting \ as path separators, but we were passing it normalized file paths,
where these have been replaced by forward slashes. Apart from this, the function
was incorrect for posix paths as well in some corner cases, as well as being
generally hard to follow.
The corner cases were:
- /../bar -> should be same as /bar
- /bar/.. -> should be same as / (slightly dodgy as the former depends on /bar actually
existing, but since we're doing it in an abstract way, I think the
transformation is reasonable)
I rewrite the function to fix these corner cases and handle windows paths more
correctly. The function should now handle the posix paths (modulo symlinks, but
we cannot really do anything about that without a real filesystem). For windows
paths, there are a couple of corner cases left, mostly to do with drive letter
handling, which cannot be fixed until the rest of the class understands drive
letters better.
Reviewers: clayborg, zturner
Subscribers: lldb-commits
Differential Revision: https://reviews.llvm.org/D26081
llvm-svn: 285593
Summary:
This plugin resembles the already existing Windows-only Minidump plugin.
The WinMinidumpPlugin uses the Windows API for parsing Minidumps
while this plugin is cross-platform because it includes a Minidump
parser (which is already commited)
It is able to produce a backtrace, to read the general puprose regiters,
inspect local variables, show image list, do memory reads, etc.
For now the only arches that this supports are x86_32 and x86_64.
This is because I have only written register contexts for those.
Others will come in next CLs.
I copied the WinMinidump tests and adapted them a little bit for them to
work with the new plugin (and they pass)
I will add more tests, aiming for better code coverage.
There is still functionality to be added, see TODOs in code.
Reviewers: labath, zturner
Subscribers: beanz, mgorny, modocache, lldb-commits, amccarth
Differential Revision: https://reviews.llvm.org/D25905
llvm-svn: 285587
Summary:
This, like the x86_64 case, reads the register values from the minidump
file, and emits a binary buffer that is ordered using the offsets from
the RegisterInfoInterface argument. That way we can reuse an existing
register context.
Added unit tests.
Reviewers: labath, zturner
Subscribers: beanz, mgorny, modocache, amccarth, lldb-commits
Differential Revision: https://reviews.llvm.org/D25832
llvm-svn: 285584
Most of them fail right now and are commented out. The main problem is handling
of backslashes on windows, but also the posix path code has a couple of issues.
llvm-svn: 285393
Summary:
Now the Minidump parser can parse the:
1) MemoryInfoList - containing region info about memory ranges (readable,
writable, executable)
2) Memory64List - this is the stuct used when the Minidump is a
full-memory one.
3) Adding filtering of the module list (shared libraries list) - there
can be mutliple records in the module list under the same name but with
different load address (e.g. when the binary has non contigious
sections). FilterModuleList eliminates the duplicated modules, leaving
the one with the lowest load addr.
Added unit tests for everything.
Reviewers: labath, zturner
Subscribers: beanz, mgorny, modocache, lldb-commits, amccarth
Differential Revision: https://reviews.llvm.org/D25569
llvm-svn: 284593
prologue, then loads & stores x20 on the stack from a different
location in the middle of the function, and then restores the
reg in the epilogue. The saving/restoring of x20 in the middle
of the function should be ignored.
llvm-svn: 283969
MSVC does not like the declaration of a terminate() function (I guess it looks
too much like std::terminate()). While I'm there, move the setup/teardown code
into the functions gtest provides for that purpose.
llvm-svn: 283870
plan generator.
Fix a small bug in EmulateInstructionARM64::GetFramePointerRegister
which was returning the stack pointer reg instead of fp, prevented
the unwinder from recognizing the switch to using the fp in a
function. (<rdar://problem/28663117>)
Add a new eContextRestoreStackPointer context hint so that the arm64
emulator can flag when the frame pointer value is copied back in to
the stack pointer and that should be used to compute the canonical
frame address again in an epilogue sequence. (<rdar://problem/28704862>)
Small changes to UnwindAssemblyInstEmulation to have a method we can
call without a live process/thread/etc for unit tests.
<rdar://problem/28663117>
<rdar://problem/28704862>
<rdar://problem/28509178>
llvm-svn: 283847
insturction profiling. Add a test that verifies that we reject a
32-bit only instruction in 64-bit (long) mode.
This wraps up all the testing I want to add for
x86AssemblyInspectionEngine.
llvm-svn: 283404
Tests are failing and build is failing on windows and darwin.
Will fix and commit it later
-------------------------------------------------------------
Revert "xfailing minidump tests again ... :("
This reverts commit 97eade002c9e43c1e0d11475a4888083a8965044.
Revert "Fixing new Minidump plugin tests"
This reverts commit 0dd93b3ab39c8288696001dd50b9a093b813b09c.
Revert "Add the new minidump files to the Xcode project."
This reverts commit 2f638a1d046b8a88e61e212220edc40aecd2ce44.
Revert "xfailing tests for Minidump plugin"
This reverts commit 99311c0b22338a83e6a00c4fbddfd3577914c003.
Revert "Adding a new Minidump post-mortem debugging plugin"
This reverts commit b09a7e4dae231663095a84dac4be3da00b03a021.
llvm-svn: 283352
Summary:
This plugin resembles the already existing Windows-only Minidump plugin.
The WinMinidumpPlugin uses the Windows API for parsing Minidumps
while this plugin is cross-platform because it includes a Minidump
parser (which is already commited)
It is able to produce a backtrace, to read the general puprose regiters,
inspect local variables, show image list, do memory reads, etc.
For now the only arch that this supports is x86 64 bit
This is because I have only written a register context for that arch.
Others will come in next CLs.
I copied the WinMinidump tests and adapted them a little bit for them to
work with the new plugin (and they pass)
I will add more tests, aiming for better code coverage.
There is still functionality to be added, see TODOs in code.
Reviewers: labath, zturner
Subscribers: beanz, mgorny, amccarth, lldb-commits, modocache
Differential Revision: https://reviews.llvm.org/D25196
llvm-svn: 283259
unittests. If I have time, I'd like to see if I can write some
tests of the eh_frame augmentation which is a wholly separate code
path (it seems like maybe it should be rolled into the main instruction
scanning codepath, to be honest, and operate on the generated
UnwindPlan instead of bothering with raw instructions at all).
Outside the eh_frame augmentation, I'm comfortable that this unwind
generator is being tested well now.
llvm-svn: 283186
There were a number of issues with the Args class preventing
efficient use of strings and incoporating LLVM's StringRef class.
The two biggest were:
1. Backing memory stored in a std::string, so we would frequently
have to use const_cast to get a mutable buffer for passing to
various low level APIs.
2. backing std::strings stored in a std::list, which doesn't
provide random access.
I wanted to solve these two issues so that we could provide
StringRef access to the underlying arguments, and also a way
to provide range-based access to the underlying argument array
while still providing convenient c-style access via an argv style
const char**.
The solution here is to store arguments in a single "entry" class
which contains the backing memory, a StringRef with precomputed
length, and the quote char. The backing memory is a manually
allocated const char* so that it is not invalidated when the
container is resized, and there is a separate argv array provided
for c-style access.
Differential revision: https://reviews.llvm.org/D25099
llvm-svn: 283157
assembly inspection class is designed to detect. This is only about
half of the instructions that it needs to recognize - I'll complete
this in a separate checkin.
The larger full-function style test cases I'd checked in previously
covered nearly all of these already, but I wanted simpler test cases
too, so if they fail in the future, it will be easier to spot the
issue.
llvm-svn: 283010
'push 0x20(%esp)' which clang can generate when emitting
-fomit-frame-pointer code for 32-bit.
Add a unit test program which includes this instruction.
Also fix a bug in the refactoring/rewrite of the x86 assembly
instruction profiler where I'd hard coded it as a 64-bit disassembler
instead of using the ArchSpec to pick a 32-bit or 64-bit disassembler
from llvm. When the disassembler would hit an instruction
that is invalid in 64-bit mode, it would stop disassembling the function.
This likely led to the TestSBData testsuite failure on linux with 32-bit
i386 and gcc-4.9; I'll test that in a bit.
The newly added unit test program is 32-bit i386 code and it includes
an instruction which is invalid in 64-bit mode so it will catch this.
<rdar://problem/28557876>
llvm-svn: 282991
a large stack frame with lots of spilled registers.
While writing the i386 version of this test, it looks
like I found a bug in the 32-bit instruction profiler
code. I may ned to fix the assembly inspection engine
before I can finish writing that test, so I'm only
committing the 64-bit one tonight.
<rdar://problem/28509178>
llvm-svn: 282683
a linux bot test failure. That one is fixed; hopefully there won't
be any others turned up this time.
The eh_frame augmentation code wasn't working right after the
reorg/rewrite of the classes. It works correctly now for the one
test that was failing - but we'll see what the test bots come up
with.
<rdar://problem/28509178>
llvm-svn: 282659
A testbot found a regression introduced in the testsuite with
the changes in r282565 on Ubuntu (TestStepNoDebug.ReturnValueTestCase).
I'll get this set up on an ubuntu box and figure out what is happening
there -- likely a problem with the eh_frame augmentation, which isn't
used on macosx.
llvm-svn: 282566
x86AssemblyInspectionEngine and the current UnwindAssembly_x86 to
allow for the core engine to be exercised by unit tests.
The UnwindAssembly_x86 class will have access to Targets, Processes,
Threads, RegisterContexts -- it will be working in the full lldb
environment.
x86AssemblyInspectionEngine is layered away from all of that, it is
given some register definitions and a bag of bytes to profile.
I wrote an initial unittest for a do-nothing simple x86_64/i386
function to start with. I'll be adding more.
The x86 assembly unwinder was added to lldb early in its bringup;
I made some modernization changes as I was refactoring the code
to make it more consistent with how we write lldb today.
I also added RegisterContextMinidump_x86_64.cpp to the xcode project
file so I can run the unittests from that.
The testsuite passes with this change, but there was quite a bit of
code change by the refactoring and it's possible there are some
issues. I'll be testing this more in the coming days, but it looks
like it is behaving correctly as far as I can tell with automated
testing.
<rdar://problem/28509178>
llvm-svn: 282565
Summary:
This is a register context converter from Minidump to Linux reg context.
This knows the layout of the register context in the Minidump file
(which is the same as in Windows FYI) and as a result emits a binary data
buffer that matches the Linux register context binary layout.
This way we can reuse the existing RegisterContextLinux_x86_64 and
RegisterContextCorePOSIX_x86_64 classes.
Reviewers: labath, zturner
Subscribers: beanz, mgorny, lldb-commits, amccarth
Differential Revision: https://reviews.llvm.org/D24919
llvm-svn: 282529
Also fixed up a couple misbehaving functions. It is perfectly
legal to have env vars with no values (i.e. the '=' and following
need not be present).
llvm-svn: 282171
The test exposed a bug in the StructuredData Serialization code, which did not
escape the backslash properly. This manifested itself as windows breakpoint
serialization roundtrip test not succeeding (as windows paths included
backslashes).
llvm-svn: 282167
This patch also marks the const char* versions as =delete to prevent
their use. This has the potential to cause build breakages on some
platforms which I can't compile. I have tested on Windows, Linux,
and OSX. Best practices for fixing broken callsites are outlined in
Args.h in a comment above the deleted function declarations.
Eventually we can remove these =delete declarations, but for now they
are important to make sure that all implicit conversions from
const char * are manually audited to make sure that they do not invoke a
conversion from nullptr.
llvm-svn: 281919
Where possible, remove the const char* version. To keep the
risk and impact here minimal, I've only done the simplest
functions.
In the process, I found a few opportunities for adding some
unit tests, so I added those as well.
Tested on Windows, Linux, and OSX.
llvm-svn: 281799
This makes the code easier to grok, and since this is a very low
level function it also is very helpful to have this take a StringRef
since it means anyone higher up the chain who has a StringRef would
have to first convert it to a null-terminated string. This way it
can work equally well with StringRefs or const char*'s, which will
enable the conversion of higher up functions to StringRef.
Tested on Windows, Linux, and OSX and saw no regressions.
llvm-svn: 281642
I'm was trying to do some cleanup and code modernization and in
doing so I needed to change ParseMachCPUDashSubtypeTriple to take
a StringRef. To ensure I don't break anything, I'm adding some
unit tests for this function. As a side benefit, this also expands
test coverage of this function to all platforms, since in general
this code would rarely be exercised on non Mac platforms, and never
in the test suite.
llvm-svn: 281387
Summary:
Added parsing of the MiscInfo data stream.
The main member of it that we care about is the process_id
On Linux generated Minidump (from breakpad) we don't have
the MiscInfo, we have the /proc/$pid/status from where we can get the
pid.
Also parsing the module list - the list of all of the loaded
modules/shared libraries.
Parsing the exception stream.
Parsing MinidumpStrings.
I have unit tests for all of that.
Also added some tests using a Minidump generated from Windows tools (not
from breakpad)
Reviewers: labath, zturner
Subscribers: beanz, lldb-commits
Differential Revision: https://reviews.llvm.org/D24385
llvm-svn: 281348
This change does the following:
* Changes the signature for the continuation delegate method that handles
async structured data from accepting an already-parsed structured data
element to taking just the packet contents.
* Moves the conversion of the JSON-async: packet contents from
GDBRemoteClientBase to the continuation delegate method.
* Adds a new unit test for verifying that the $JSON-asyc: packets get
decoded and that the decoded packets get forwarded on to the delegate
for further processing. Thanks to Pavel for making that whole section of
code easily unit testable!
* Tightens up the packet verification on reception of a $JSON-async:
packet contents. The code prior to this change is susceptible to a
segfault if a packet is carefully crafted that starts with $J but
has a total length shorter than the length of "$JSON-async:".
Reviewers: labath, clayborg, zturner
Differential Revision: https://reviews.llvm.org/D23884
llvm-svn: 281121
The behaviour of FileSpec differed between host OS versions. Hardcode the path
syntax to posix, as we don't care about that in this test.
llvm-svn: 281025
Pavel Labath