Commit Graph

623 Commits

Author SHA1 Message Date
Saleem Abdulrasool f1585a4b47 Windows: support `DoLoadImage`
This implements `DoLoadImage` and `UnloadImage` in the Windows platform
plugin modelled after the POSIX platform plugin.  This was previously
unimplemented and resulted in a difficult to decipher error without any
logging.

This implementation is intended to support enables the use of LLDB's
Swift REPL on Windows.

Paths which are added to the library search path are persistent and
applied to all subsequent loads.  This can be adjusted in the future by
storing all the cookies and restoring the path prior to returning from
the helper.  However, the dynamic path count makes this a bit more
challenging.

Reviewed By: @JDevlieghere
Differential Revision: https://reviews.llvm.org/D77287
2021-12-04 11:11:47 -08:00
Muhammad Omair Javaid 80792368bb [LLDB] XFAIL on Arm/Linux minidebuginfo-set-and-hit-breakpoint.test
minidebuginfo-set-and-hit-breakpoint.test is failing on Arm/Linux most
probably due to an ill formed binary after removal of certain sections
from executable. I am marking it as XFAIL for further investigation.
2021-12-03 21:52:21 +05:00
Greg Clayton 266a66c915 Include extra input contents on this test so we can see why lldb-arm-ubuntu buildbot is failing.
Only lldb-arm-ubuntu is failing after https://reviews.llvm.org/D114288 and there isn't enough input context to see why this is failing. It works on x86_64 linux just fine.
2021-12-02 15:47:15 -08:00
Zequan Wu fe270ab061 [LLDB][NativePDB] fix find-functions.cpp failure on windows bots (2) 2021-11-29 11:06:06 -08:00
Zequan Wu 34d02fada2 [LLDB][NativePDB] fix find-functions.cpp failure on windows bots 2021-11-29 10:05:09 -08:00
Saleem Abdulrasool 6488bd1d51 test: add a lit configuration for Windows subdirectory
This adds a local configuration to the Windows subdirectory to filter
out the tests on non-Windows platforms using the lit filtering.
2021-11-28 18:27:47 -08:00
Zequan Wu 22ced33a2f [LLDB][NativePDB] Allow find functions by full names
I don't see a reason why not to. If we allows lookup functions by full names,
I can change the test case in D113930 to use `lldb-test symbols --find=function --name=full::name --function-flags=full ...`,
though the duplicate method decl prolem is still there for `lldb-test symbols --dump-ast`.
That's a seprate bug, we can fix it later.

Differential Revision: https://reviews.llvm.org/D114467
2021-11-23 17:57:05 -08:00
Zequan Wu b6d3535230 [LLDB][NativePDB] Fix local-variables.cpp failure on windows bots 2021-11-15 16:14:55 -08:00
Matheus Izvekov c9e46219f3
[clang] retain type sugar in auto / template argument deduction
This implements the following changes:
* AutoType retains sugared deduced-as-type.
* Template argument deduction machinery analyses the sugared type all the way
down. It would previously lose the sugar on first recursion.
* Undeduced AutoType will be properly canonicalized, including the constraint
template arguments.
* Remove the decltype node created from the decltype(auto) deduction.

As a result, we start seeing sugared types in a lot more test cases,
including some which showed very unfriendly `type-parameter-*-*` types.

Signed-off-by: Matheus Izvekov <mizvekov@gmail.com>

Reviewed By: rsmith, #libc, ldionne

Differential Revision: https://reviews.llvm.org/D110216
2021-11-15 23:07:45 +01:00
Zequan Wu f17404a733 [LLDB][NativePDB] Fix image lookup by address
`image lookup -a ` doesn't work because the compilands list is always empty.
Create CU at given index if doesn't exit.

Differential Revision: https://reviews.llvm.org/D113821
2021-11-15 12:30:23 -08:00
Matheus Izvekov 6438a52df1
Revert "[clang] retain type sugar in auto / template argument deduction"
This reverts commit 4d8fff477e.
2021-11-15 00:29:05 +01:00
Matheus Izvekov 4d8fff477e
[clang] retain type sugar in auto / template argument deduction
This implements the following changes:
* AutoType retains sugared deduced-as-type.
* Template argument deduction machinery analyses the sugared type all the way
down. It would previously lose the sugar on first recursion.
* Undeduced AutoType will be properly canonicalized, including the constraint
template arguments.
* Remove the decltype node created from the decltype(auto) deduction.

As a result, we start seeing sugared types in a lot more test cases,
including some which showed very unfriendly `type-parameter-*-*` types.

Signed-off-by: Matheus Izvekov <mizvekov@gmail.com>

Reviewed By: rsmith

Differential Revision: https://reviews.llvm.org/D110216
2021-11-13 03:35:22 +01:00
Adrian Kuegel c30c37c00a Revert "[lldb] fix test expectation broken by clang fix at D110216"
This reverts commit 5508595217.
The patch it depends on is reverted.
2021-11-12 13:21:30 +01:00
Matheus Izvekov 5508595217
[lldb] fix test expectation broken by clang fix at D110216
Signed-off-by: Matheus Izvekov <mizvekov@gmail.com>

Differential Revision: https://reviews.llvm.org/D113722
2021-11-12 01:47:29 +01:00
Zequan Wu cc9ced0ed4 [LLDB][Breakpad] Make lldb understand INLINE and INLINE_ORIGIN records in breakpad.
Teach LLDB to understand INLINE and INLINE_ORIGIN records in breakpad.
They have the following formats:
```
INLINE inline_nest_level call_site_line call_site_file_num origin_num [address size]+
INLINE_ORIGIN origin_num name
```
`INLNIE_ORIGIN` is simply a string pool for INLINE so that we won't have
duplicated names for inlined functions and can show up anywhere in the symbol
file.
`INLINE` follows immediately after `FUNC` represents the ranges of momery
address that has functions inlined inside the function.

Differential Revision: https://reviews.llvm.org/D113330
2021-11-10 11:20:32 -08:00
Zequan Wu fbf665a008 [LLDB][Breakpad] Create a function for each compilation unit.
Since every FUNC record (in breakpad) is a compilation unit, creating the
function for the CU allows `ResolveSymbolContext` to resolve
`eSymbolContextFunction`.

Differential Revision: https://reviews.llvm.org/D113163
2021-11-10 10:51:16 -08:00
Lawrence D'Anna bbef51eb43 [lldb] make it easier to find LLDB's python
It is surprisingly difficult to write a simple python script that
can reliably `import lldb` without failing, or crashing.   I'm
currently resorting to convolutions like this:

    def find_lldb(may_reexec=False):
		if prefix := os.environ.get('LLDB_PYTHON_PREFIX'):
			if os.path.realpath(prefix) != os.path.realpath(sys.prefix):
				raise Exception("cannot import lldb.\n"
					f"  sys.prefix should be: {prefix}\n"
					f"  but it is: {sys.prefix}")
		else:
			line1, line2 = subprocess.run(
				['lldb', '-x', '-b', '-o', 'script print(sys.prefix)'],
				encoding='utf8', stdout=subprocess.PIPE,
				check=True).stdout.strip().splitlines()
			assert line1.strip() == '(lldb) script print(sys.prefix)'
			prefix = line2.strip()
			os.environ['LLDB_PYTHON_PREFIX'] = prefix

		if sys.prefix != prefix:
			if not may_reexec:
				raise Exception(
					"cannot import lldb.\n" +
					f"  This python, at {sys.prefix}\n"
					f"  does not math LLDB's python at {prefix}")
			os.environ['LLDB_PYTHON_PREFIX'] = prefix
			python_exe = os.path.join(prefix, 'bin', 'python3')
			os.execl(python_exe, python_exe, *sys.argv)

		lldb_path = subprocess.run(['lldb', '-P'],
			check=True, stdout=subprocess.PIPE,
				encoding='utf8').stdout.strip()

		sys.path = [lldb_path] + sys.path

This patch aims to replace all that with:

  #!/usr/bin/env lldb-python
  import lldb
  ...

... by adding the following features:

* new command line option: --print-script-interpreter-info.  This
   prints language-specific information about the script interpreter
   in JSON format.

* new tool (unix only): lldb-python which finds python and exec's it.

Reviewed By: JDevlieghere

Differential Revision: https://reviews.llvm.org/D112973
2021-11-10 10:33:34 -08:00
Adrian Prantl 68a4d179c2 Use yaml2obj instead of relying on invoking the Darwin system assembler. 2021-11-09 10:47:26 -08:00
Adrian Prantl 56f7da6e0d Add a requires line to test. 2021-11-09 10:16:03 -08:00
Adrian Prantl c9881c7d99 Support looking up absolute symbols
The Swift stdlib uses absolute symbols in the dylib to communicate
feature flags to the process. LLDB's expression evaluator needs to be
able to find them. This wires up absolute symbols so they show up in
the symtab lookup command, which is also all that's needed for them to
be visible to the expression evaluator JIT.

rdar://85093828

Differential Revision: https://reviews.llvm.org/D113445
2021-11-09 09:44:37 -08:00
Muhammad Omair Javaid cbd215dfe5 [LIT] Add win32 PLATFORM env var to test config
LIT skips various system environment variables while building test
config. It turns out that we require PLATFORM environment variable for
detection of x86 vs Arm windows platform.

This patch adds system environment variable PLATFORM into LIT test
config for detection of win32 Arm platform.

Reviewed By: mstorsjo

Differential Revision: https://reviews.llvm.org/D113165
2021-11-04 17:42:43 +05:00
Lawrence D'Anna 531d877ee6 [lldb] Fix TestEchoCommands.test again
In 7f01f78593 [lldb] update TestEchoCommands -- I fixed this test,
but not on windows, becuase I used  some unix shell syntax that
doesn't work with cmd.exe.   Fixed it so it will work in both.
Test logic is the same.

This is a trivial fix, so bypassing review to get the build clean again
ASAP.
2021-11-04 01:24:25 -07:00
Lawrence D'Anna 7f01f78593 [lldb] update TestEchoCommands
Followup to https://reviews.llvm.org/D112988

Sorry, I broke this test.   The test was verifying the bad behavior
of --source-quietly that the previous change fixed -- namely that
it still echos the initial list of startup commands while
sourcing them.

Updated the test to verify that --source-quietly is quiet, rather than
loud.

Reviewed By: JDevlieghere

Differential Revision: https://reviews.llvm.org/D113047
2021-11-02 14:30:08 -07:00
Lawrence D'Anna e2a6c08bbc [lldb] fix --source-quietly
Jim says:

lldb has a -Q or --source-quietly option, which supposedly does:

    --source-quietly     Tells the debugger to execute this one-line lldb command before any file has been loaded.

That seems like a weird description, since we don't generally use source for one line entries, but anyway, let's try it:

    > $LLDB_LLVM/clean-mono/build/Debug/bin/lldb -Q "script print('I should be quiet')" a.out -O "script print('I should be before')" -o "script print('I should be after')"
    (lldb) script print('I should be before')
    I should be before
    (lldb) target create "script print('I should be quiet')"
    error: unable to find executable for 'script print('I should be quiet')'

That was weird.  The first real -O gets sourced but not quietly, then the argument to the -Q gets treated as the target.

    > $LLDB_LLVM/clean-mono/build/Debug/bin/lldb -Q a.out -O "script print('I should be before')" -o "script print('I should be after')"
    (lldb) script print('I should be before')
    I should be before
    (lldb) target create "a.out"
    Current executable set to '/tmp/a.out' (x86_64).
    (lldb) script print('I should be after')
    I should be after

Well, that's a little better, but the -Q option seems to have done nothing.

---

This fixes the description of --source-quietly, as well as causing it
to actually suppress echoing while executing the initialization
commands.

Reviewed By: jingham

Differential Revision: https://reviews.llvm.org/D112988
2021-11-02 11:01:55 -07:00
Muhammad Omair Javaid 4c8ea90b25 [LLDB] Fix LLDB buildbots break due to --image-base
LLDB build were failing due to following two test failures:
lldb-shell :: ObjectFile/ELF/basic-info.yaml
lldb-shell :: SymbolFile/DWARF/x86/debug-types-address-ranges.s

There were caused by commit 6506907a0a
2021-10-26 12:07:16 +05:00
Pavel Labath c1055f0919 [lldb/DWARF] Don't create lldb_private::Functions for gc'ed DW_TAG_subprograms
Front-load the first_valid_code_address check, so that we avoid creating
the function object (instead of simply refusing to use it in queries).

Differential Revision: https://reviews.llvm.org/D112310
2021-10-25 10:32:35 +02:00
David Blaikie 64f002c6d3 Follow-up fixes for aee4925507 2021-10-21 13:00:56 -07:00
David Blaikie aee4925507 Recommit: Compress formatting of array type names (int [4] -> int[4])
Based on post-commit review discussion on
2bd8493847 with Richard Smith.

Other uses of forcing HasEmptyPlaceHolder to false seem OK to me -
they're all around pointer/reference types where the pointer/reference
token will appear at the rightmost side of the left side of the type
name, so they make nested types (eg: the "int" in "int *") behave as
though there is a non-empty placeholder (because the "*" is essentially
the placeholder as far as the "int" is concerned).

This was originally committed in 277623f4d5

Reverted in f9ad1d1c77 due to breakages
outside of clang - lldb seems to have some strange/strong dependence on
"char [N]" versus "char[N]" when printing strings (not due to that name
appearing in DWARF, but probably due to using clang to stringify type
names) that'll need to be addressed, plus a few other odds and ends in
other subprojects (clang-tools-extra, compiler-rt, etc).
2021-10-21 11:34:43 -07:00
Jaroslav Sevcik 5a3556aa55 [lldb] Add omitted abstract formal parameters in DWARF symbol files
This patch fixes a problem introduced by clang change
https://reviews.llvm.org/D95617 and described by
https://bugs.llvm.org/show_bug.cgi?id=50076#c6, where inlined functions
omit unused parameters both in the stack trace and in `frame var`
command. With this patch, the parameters are listed correctly in the
stack trace and in `frame var` command.

Specifically, we parse formal parameters from the abstract version of
inlined functions and use those formal parameters if they are missing
from the concrete version.

Differential Revision: https://reviews.llvm.org/D110571
2021-10-21 12:33:42 +02:00
Pavel Labath ffbff6c511 [lldb/DWARF] Ignore debug info pointing to the low addresses
specifically, ignore addresses that point before the first code section.

This resurrects D87172 with several notable changes:
- it fixes a bug where the early exits in InitializeObject left
  m_first_code_address "initialized" to LLDB_INVALID_ADDRESS (0xfff..f),
  which caused _everything_ to be ignored.
- it extends the line table fix to function parsing as well, where it
  replaces a similar check which was checking the executable permissions
  of the section. This was insufficient because some
  position-independent elf executables can have an executable segment
  mapped at file address zero. (What makes this fix different is that it
  checks for the executable-ness of the sections contained within that
  segment, and those will not be at address zero.)
- It uses a different test case, with an elf file with near-zero
  addresses, and checks for both line table and function parsing.

Differential Revision: https://reviews.llvm.org/D112058
2021-10-20 11:19:30 +02:00
Raphael Isemann 7dfb139554 [lldb] Adjust udt-layout.test after MS mangling change
The demangled name no longer contains the redundant name since D111715.
2021-10-19 12:43:24 +02:00
Pavel Labath b37efed957 [lldb] Fix PDB/compilands.test for a3939e1 2021-10-18 14:11:47 +02:00
Pavel Labath a3939e159f [lldb] Return StringRef from PluginInterface::GetPluginName
There is no reason why this function should be returning a ConstString.

While modifying these files, I also fixed several instances where
GetPluginName and GetPluginNameStatic were returning different strings.

I am not changing the return type of GetPluginNameStatic in this patch, as that
would necessitate additional changes, and this patch is big enough as it is.

Differential Revision: https://reviews.llvm.org/D111877
2021-10-18 10:14:42 +02:00
Pavel Labath ca0ce99fc8 [lldb] Print embedded nuls in char arrays (PR44649)
When we know the bounds of the array, print any embedded nuls instead of
treating them as terminators. An exception to this rule is made for the
nul character at the very end of the string. We don't print that, as
otherwise 99% of the strings would end in \0. This way the strings
usually come out the same as how the user typed it into the compiler
(char foo[] = "with\0nuls"). It also matches how they come out in gdb.

This resolves a FIXME left from D111399, and leaves another FIXME for dealing
with nul characters in "escape-non-printables=false" mode. In this mode the
characters cause the entire summary string to be terminated prematurely.

Differential Revision: https://reviews.llvm.org/D111634
2021-10-14 09:50:40 +02:00
Qiu Chaofan da0b62dfb3 Revert a LIT typo fix in a RUN line
Commit 573531f changes the behavior of the test, revert it back.
2021-10-09 11:29:44 +08:00
Qiu Chaofan 573531fb1f Fix typo of colon to semicolon in lit tests 2021-10-09 10:03:50 +08:00
Jonas Devlieghere b225c5f786 [lldb] Parse and display reporting errors from JSON crashlogs
JSON crashlogs have an optional field named reportNotes that contains
any potential errors encountered by the crash reporter when generating
the crashlog. Parse and display them in LLDB.

Differential revision: https://reviews.llvm.org/D111339
2021-10-07 15:53:52 -07:00
Jonas Devlieghere b913065bf4 [lldb] Support missing threadState in JSON crashlogs
Gracefully deal with JSON crashlogs that don't have thread state
available and print an error saying as much: "No thread state (register
information) available".

rdar://83955858

Differential revision: https://reviews.llvm.org/D111341
2021-10-07 15:53:52 -07:00
David Blaikie f6a561c4d6 DebugInfo: Use clang's preferred names for integer types
This reverts c7f16ab3e3 / r109694 - which
suggested this was done to improve consistency with the gdb test suite.
Possible that at the time GCC did not canonicalize integer types, and so
matching types was important for cross-compiler validity, or that it was
only a case of over-constrained test cases that printed out/tested the
exact names of integer types.

In any case neither issue seems to exist today based on my limited
testing - both gdb and lldb canonicalize integer types (in a way that
happens to match Clang's preferred naming, incidentally) and so never
print the original text name produced in the DWARF by GCC or Clang.

This canonicalization appears to be in `integer_types_same_name_p` for
GDB and in `TypeSystemClang::GetBasicTypeEnumeration` for lldb.

(I tested this with one translation unit defining 3 variables - `long`,
`long (*)()`, and `int (*)()`, and another translation unit that had
main, and a function that took `long (*)()` as a parameter - then
compiled them with mismatched compilers (either GCC+Clang, or
Clang+(Clang with this patch applied)) and no matter the combination,
despite the debug info for one CU naming the type "long int" and the
other naming it "long", both debuggers printed out the name as "long"
and were able to correctly perform overload resolution and pass the
`long int (*)()` variable to the `long (*)()` function parameter)

Did find one hiccup, identified by the lldb test suite - that CodeView
was relying on these names to map them to builtin types in that format.
So added some handling for that in LLVM. (these could be split out into
separate patches, but seems small enough to not warrant it - will do
that if there ends up needing any reverti/revisiting)

Differential Revision: https://reviews.llvm.org/D110455
2021-10-06 16:02:34 -07:00
Jonas Devlieghere 730fca46fc [lldb] Improve meta data stripping from JSON crashlogs
JSON crashlogs normally start with a single line of meta data that we
strip unconditionally. Some producers started omitting the meta data
which tripped up crashlog. Be more resilient by only removing the first
line when we know it really is meta data.

rdar://82641662
2021-10-05 12:15:54 -07:00
Pavel Labath cd6893a5a3 [lldb] Fix target-symbols-add-unwind.test for clang 7647a841
We need a different flag combination to produce .debug_frame.
2021-09-24 09:06:44 +02:00
Stefan Gränitz 9689c1b7bb [lldb] JITLoaderGDB tests can use lli in ORC greedy mode
At first, lli only supported lazy mode for ORC. Greedy mode was added with e1579894d2 and is the default settings now. JITLoaderGDB tests don't rely on laziness, so we can switch them to greedy and remove some complexity.
2021-09-22 14:46:19 +02:00
David Blaikie 40e971a210 nullptr printing - update for a change to clang type printing that now uses "std::nullptr_t" 2021-09-21 11:50:24 -07:00
Nico Weber 99ece01a0f [lldb/win] Fix TestIRMemoryMapWindows.test when running tests in git bash
lit.util.which('link') picks up the wrong link.exe in git bash, leading
to this error:

  # command stderr:
  /usr/bin/link: extra operand '/LIBPATH:C:\\Progra....'
  Try '/usr/bin/link --help' for more information.

Instead, assume that link.exe is next to cl.exe.

Differential Revision: https://reviews.llvm.org/D109832
2021-09-16 07:40:54 -04:00
Michał Górny dd58083304 [lldb] [test] Remove parent output checks from follow-child tests
Remove the parent output checks, as they make the test flaky while
serving no real purpose.  If the parent crashed/hanged, it will never
resume the child and the test would fail anyway.
2021-09-13 15:50:00 +02:00
Michał Górny 4e7ac6faca [lldb] [test] Remove parent check in Subprocess/clone-follow-child-softbp.test
Hopefully this will resolve the remaining flakiness.
2021-09-10 18:03:05 +02:00
Michał Górny caf508d712 [lldb] [test] Synchronize before the breakpoint in fork tests
We set breakpoint on child_func, so synchronization inside it is too
late to guarantee ordering between the parent output and child
breakpoint.  Split the function in two, and perform synchronization
before the breakpoint.

Differential Revision: https://reviews.llvm.org/D109591
2021-09-10 13:06:01 +02:00
Michał Górny f659bf00b4 [lldb] [test] Add synchronization fix Subprocess test flakiness
Add synchronization routines to ensure that Subprocess tests output
in a predictable order, and all test strings are output before the tests
terminate.

Differential Revision: https://reviews.llvm.org/D109495
2021-09-10 09:11:08 +02:00
Michał Górny d1280f6967 [lldb] [test] Add tests for coredumps with multiple threads
Differential Revision: https://reviews.llvm.org/D101157
2021-09-09 09:59:52 +02:00
Michał Górny 5ef63c953f [lldb] [test] Mark the remaining vfork-follow-child test unsupported (flaky) on aarch64 2021-09-03 16:30:25 +02:00
Michał Górny dda643c9fb [lldb] [test] Mark vfork-follow-child-* tests unsupported (flaky) on aarch64 2021-09-03 16:04:34 +02:00
Kim-Anh Tran ec671f3ea0 [lldb] Support .debug_rnglists.dwo sections in dwp file
This patch considers the CU index entry
when reading the .debug_rnglists.dwo section.

Reviewed By: jankratochvil

Differential Revision: https://reviews.llvm.org/D107456
2021-09-03 15:19:50 +02:00
Michał Górny 808bcb7a0e [lldb] [test] Mark *fork-follow-child* tests non-Darwin 2021-09-03 09:07:53 +02:00
Raphael Isemann bbcb4d6bc0 Revert "[lldb server] Tidy up LLDB server return codes and associated tests"
This reverts commit e387c8c413. The
TestErrorMessages.test is failing on the Linux bots.
2021-09-02 15:27:39 +02:00
Michał Górny 4a2a947317 [lldb] [client] Implement follow-fork-mode
Implement a new target.process.follow-fork-mode setting to control
LLDB's behavior on fork.  If set to 'parent', the forked child is
detached and parent continues being traced.  If set to 'child',
the parent is detached and child becomes traced instead.

Differential Revision: https://reviews.llvm.org/D100503
2021-09-02 12:16:58 +02:00
Sebastian Schwartz e387c8c413 [lldb server] Tidy up LLDB server return codes and associated tests
This diff modifies the LLDB server return codes to more accurately reflect usage
error paths. Specifically we always propagate the return codes from the main
entrypoints into GDB remote LLDB server, and platform LLDB server. This way, the
top-level caller of LLDB server will be able to correctly check whether the
executable exited with or without an error.

We additionally modify and extend the associated shell unit tests to expect
nonzero return codes on error conditions.

Test Plan:
LLDB tests pass:

```
ninja check-lldb
```

Reviewed By: teemperor

Differential Revision: https://reviews.llvm.org/D108351
2021-09-02 11:16:37 +02:00
Michał Górny c568985845 [lldb] [gdb-remote client] Remove breakpoints throughout vfork
Temporarily remove breakpoints for the duration of vfork, in order
to prevent them from triggering in the child process.  Restore them
once the server reports that vfork has finished and it is ready to
resume execution.

Differential Revision: https://reviews.llvm.org/D100267
2021-09-01 10:33:48 +02:00
Michał Górny ceccbb8145 Revert "[lldb] [gdb-remote client] Remove breakpoints throughout vfork"
This reverts commit 199344d832.
It caused regressions on arm, as reported by lldb-arm-ubuntu buildbot.
2021-09-01 08:53:35 +02:00
Michał Górny 199344d832 [lldb] [gdb-remote client] Remove breakpoints throughout vfork
Temporarily remove breakpoints for the duration of vfork, in order
to prevent them from triggering in the child process.  Restore them
once the server reports that vfork has finished and it is ready to
resume execution.

Differential Revision: https://reviews.llvm.org/D100267
2021-09-01 08:16:12 +02:00
Michał Górny 84f99ef2b1 [lldb] [test] Mark fork-follow-parent-softbp.test as darwin-unsupported 2021-08-31 21:19:27 +02:00
Michał Górny 8307869a22 [lldb] [gdb-remote client] Remove breakpoints in forked processes
Remove software breakpoints from forked processes in order to restore
the original program code before detaching it.

Differential Revision: https://reviews.llvm.org/D100263
2021-08-31 13:41:35 +02:00
Jan Kratochvil e21a21a977 [lldb] Fix#2 of DW_AT_ranges DW_FORM_sec_offset not using DW_AT_rnglists_base (used by GCC)
Fix D98289 so that it works even for 2nd..nth compilation unit
(.debug_rnglists).

Reviewed By: dblaikie, ikudrin

Differential Revision: https://reviews.llvm.org/D106466
2021-08-17 22:19:16 +02:00
Raphael Isemann 7377997134 [lldb] Rework 'lldb' substitution workaround in dwarf5-lazy-dwo.c
This test is specifying the lldb log channel via `ll""db` which only really works
because the command parser ends up parsing that as `lldb`. Just putting the
channel name in quotes is enough to avoid the lldb command substitution and
doesn't rely on this weird parser behaviour.
2021-08-11 12:12:25 +02:00
Jan Kratochvil f3932b9a0b [nfc] [lldb] Assertions for D106270 - [DWARF5] Fix offset check when using .debug_names
Skeleton vs. DWO units mismatch has been fixed in D106270. As they both
have type DWARFUnit it is a bit difficult to debug. So it is better to
make it safe against future changes.

Reviewed By: kimanh, clayborg

Differential Revision: https://reviews.llvm.org/D107659
2021-08-10 20:43:24 +02:00
Michał Górny 15cacab73f [lldb] [test] Skip Expr/nodefaultlib.cpp test if LD_PRELOAD Is used
Some LD_PRELOAD-ed libraries tend to interact badly with --nodefaultlib,
particularly Gentoo sandbox.  Do not run this test if LD_PRELOAD is
present in the running environment.

Differential Revision: https://reviews.llvm.org/D107701
2021-08-09 21:35:11 +02:00
Kim-Anh Tran 0dda542531 [DWARF5] Fix offset check when using .debug_names
When going through the CU entries in the name index,
make sure to compare the name entry's CU
offset against the skeleton CU's offset.

Previously there would be a mismatch, since the
wrong offset was compared, and thus no suitable
entry was found.

Reviewed By: jankratochvil

Differential Revision: https://reviews.llvm.org/D106270
2021-08-09 13:15:14 +02:00
Jaroslav Sevcik f968bd77bb Reland "[lldb/DWARF] Only match mangled name in full-name function lookup (with accelerators)"
Summary:

In the spirit of https://reviews.llvm.org/D70846, we only return functions with
matching mangled name from Apple/DebugNamesDWARFIndex::GetFunction if
eFunctionNameTypeFull is requested.

This speeds up lookup in the presence of large amount of class methods of the
same name (a typical examples would be constructors of templates with many
instantiations or overloaded operators).

Reviewers: labath, teemperor

Reviewed By: labath, teemperor

Subscribers: aprantl, arphaman, lldb-commits

Tags: #lldb

Differential Revision: https://reviews.llvm.org/D73191
2021-08-04 12:50:13 +02:00
Kim-Anh Tran 0092dbcd80 [lldb] Fix lookup of .debug_loclists with split-dwarf
This patch fixes the lookup of locations in
.debug_loclists, if they are split in a .dwp file.

Mainly, we need to consider the cu index offsets.

Reviewed By: jankratochvil

Differential Revision: https://reviews.llvm.org/D107161
2021-08-04 11:36:44 +02:00
Alex Langford d2b2ab4e1c [lldb] Further constrain a test that fails without python enabled
The test relies on the python embedded interpreter being available and
fails otherwise.
2021-08-03 11:50:36 -07:00
Eric Leese ea9706626c [test] [lldb] Use filename instead of index in test
In some environments this test could fail if start.S has its own DWARF
CompileUnit or similar are included before the DWARF CompileUnit for the
file.

This change makes the test independent of the index of the compile unit,
instead checking the filename.

Reviewed By: herhut, jankratochvil

Differential Revision: https://reviews.llvm.org/D107300
2021-08-02 21:12:57 +02:00
Eric Leese fb09f365ae [lldb] [DWARF-5] Be lazier about loading .dwo files
This change makes sure that DwarfUnit does not load a .dwo file until
necessary. I also take advantage of DWARF 5's guarantee that the first
support file is also the primary file to make it possible to create
a compile unit without loading the .dwo file.

Testcases now require Linux as it is needed for -gsplit-dwarf.

Review By: jankratochvil, dblaikie

Differential Revision: https://reviews.llvm.org/D100299
2021-07-31 10:45:31 +02:00
Stella Stamenova dfb6f7b015 Revert "[lldb] [DWARF-5] Be lazier about loading .dwo files"
This reverts commit 8dfd6cae9b.

This change broke the windows lldb bot:
https://lab.llvm.org/buildbot/#/builders/83/builds/8842
2021-07-30 18:33:13 -07:00
Eric Leese 8dfd6cae9b [lldb] [DWARF-5] Be lazier about loading .dwo files
This change makes sure that DwarfUnit does not load a .dwo file until
necessary. I also take advantage of DWARF 5's guarantee that the first
support file is also the primary file to make it possible to create
a compile unit without loading the .dwo file.

Review By: jankratochvil, dblaikie

Differential Revision: https://reviews.llvm.org/D100299
2021-07-30 23:17:06 +02:00
Jan Kratochvil d0e6d946b6 Revert "[lldb] [DWARF-5] Be lazier about loading .dwo files"
This reverts commit e7b8ba103a.

It broke 32-bit ARM - lldb-arm-ubuntu, reported by omjavaid:
  https://lab.llvm.org/buildbot/#/builders/17/builds/9595
2021-07-30 14:54:27 +02:00
Eric Leese e7b8ba103a [lldb] [DWARF-5] Be lazier about loading .dwo files
This change makes sure that DwarfUnit does not load a .dwo file until
necessary. I also take advantage of DWARF 5's guarantee that the first
support file is also the primary file to make it possible to create
a compile unit without loading the .dwo file.

Review By: jankratochvil, dblaikie

Differential Revision: https://reviews.llvm.org/D100299
2021-07-30 13:34:51 +02:00
Stella Stamenova 66ba4e3dc6 Revert "[lldb] Assert filecache and live memory match on debug under a setting"
This reverts commit 77e9d10f0f.

This change broke the Windows LLDB bot:
https://lab.llvm.org/buildbot/#/builders/83/builds/8784/steps/7/logs/stdio
2021-07-29 10:48:57 -07:00
Augusto Noronha 77e9d10f0f [lldb] Assert filecache and live memory match on debug under a setting 2021-07-29 10:29:34 -03:00
Greg Clayton ec1a491701 Create synthetic symbol names on demand to improve memory consumption and startup times.
This is a resubmission of https://reviews.llvm.org/D105160 after fixing testing issues.

This fix was created after profiling the target creation of a large C/C++/ObjC application that contained almost 4,000,000 redacted symbol names. The symbol table parsing code was creating names for each of these synthetic symbols and adding them to the name indexes. The code was also adding the object file basename to the end of the symbol name which doesn't allow symbols from different shared libraries to share the names in the constant string pool.

Prior to this fix this was creating 180MB of "___lldb_unnamed_symbol" symbol names and was taking a long time to generate each name, add them to the string pool and then add each of these names to the name index.

This patch fixes the issue by:

not adding a name to synthetic symbols at creation time, and allows name to be dynamically generated when accessed
doesn't add synthetic symbol names to the name indexes, but catches this special case as name lookup time. Users won't typically set breakpoints or lookup these synthetic names, but support was added to do the lookup in case it does happen
removes the object file baseanme from the generated names to allow the names to be shared in the constant string pool
Prior to this fix the startup times for a large application was:
12.5 seconds (cold file caches)
8.5 seconds (warm file caches)

After this fix:
9.7 seconds (cold file caches)
5.7 seconds (warm file caches)

The names of the symbols are auto generated by appending the symbol's UserID to the end of the "___lldb_unnamed_symbol" string and is only done when the name is requested from a synthetic symbol if it has no name.

Differential Revision: https://reviews.llvm.org/D106837
2021-07-27 16:51:12 -07:00
Amy Huang 1a3bf2953a [DebugInfo] Switch to using constructor homing (-debug-info-kind=constructor) by default when debug info is enabled
Constructor homing reduces the amount of class type info that is emitted
by emitting conmplete type info for a class only when a constructor for
that class is emitted.

This will mainly reduce the amount of duplicate debug info in object
files. In Chrome enabling ctor homing decreased total build directory sizes
by about 30%.

It's also expected that some class types (such as unused classes)
will no longer be emitted in the debug info. This is fine, since we wouldn't
expect to need these types when debugging.

In some cases (e.g. libc++, https://reviews.llvm.org/D98750), classes
are used without calling the constructor. Since this is technically
undefined behavior, enabling constructor homing should be fine.
However Clang now has an attribute
`__attribute__((standalone_debug))` that can be used on classes to
ignore ctor homing.

Bug: https://bugs.llvm.org/show_bug.cgi?id=46537

Differential Revision: https://reviews.llvm.org/D106084
2021-07-26 17:24:42 -07:00
Fangrui Song b71b25008f [test] Fix PayloadString: in lldb tests 2021-07-26 10:00:05 -07:00
Jonas Devlieghere 3338819b08 [lldb] Drop REQUIRES where redundant because of lit.local.cfg 2021-07-09 13:25:10 -07:00
Jonas Devlieghere 488fcea3b5 [lldb] Use custom script instead of lldb.macosx.crashlog in test
I'm not entirely sure this is the problem, but the Windows bot doesn't
seem to like this test. Let's do something similar to
command_import.test which doesn't have that issue.
2021-07-09 12:42:11 -07:00
Jonas Devlieghere f951735395 [lldb] Add the ability to silently import scripted commands
Add the ability to silence command script import. The motivation for
this change is being able to add command script import -s
lldb.macosx.crashlog to your ~/.lldbinit without it printing the
following message at the beginning of every debug session.

  "malloc_info", "ptr_refs", "cstr_refs", "find_variable", and
  "objc_refs" commands have been installed, use the "--help" options on
  these commands for detailed help.

In addition to forwarding the silent option to LoadScriptingModule, this
also changes ScriptInterpreterPythonImpl::ExecuteOneLineWithReturn and
ScriptInterpreterPythonImpl::ExecuteMultipleLines to honor the enable IO
option in ExecuteScriptOptions, which until now was ignored.

Note that IO is only enabled (or disabled) at the start of a session,
and for this particular use case, that's done when taking the Python
lock in LoadScriptingModule, which means that the changes to these two
functions are not strictly necessary, but (IMO) desirable nonetheless.

Differential revision: https://reviews.llvm.org/D105327
2021-07-09 10:05:39 -07:00
Siger Yang e81ba28313 [lldb/lua] Add scripted watchpoints for Lua
Add support for Lua scripted watchpoints, with basic tests.

Differential Revision: https://reviews.llvm.org/D105034
2021-07-07 14:51:02 -03:00
Jonas Devlieghere 6b0d266036 Revert "Create synthetic symbol names on demand to improve memory consumption and startup times."
This reverts commit c8164d0276 and
43f6dad234 because it breaks
TestDyldTrieSymbols.py on GreenDragon.
2021-07-02 16:21:47 -07:00
Greg Clayton c8164d0276 Create synthetic symbol names on demand to improve memory consumption and startup times.
This fix was created after profiling the target creation of a large C/C++/ObjC application that contained almost 4,000,000 redacted symbol names. The symbol table parsing code was creating names for each of these synthetic symbols and adding them to the name indexes. The code was also adding the object file basename to the end of the symbol name which doesn't allow symbols from different shared libraries to share the names in the constant string pool.

Prior to this fix this was creating 180MB of "___lldb_unnamed_symbol" symbol names and was taking a long time to generate each name, add them to the string pool and then add each of these names to the name index.

This patch fixes the issue by:
- not adding a name to synthetic symbols at creation time, and allows name to be dynamically generated when accessed
- doesn't add synthetic symbol names to the name indexes, but catches this special case as name lookup time. Users won't typically set breakpoints or lookup these synthetic names, but support was added to do the lookup in case it does happen
- removes the object file baseanme from the generated names to allow the names to be shared in the constant string pool

Prior to this fix the startup times for a large application was:
12.5 seconds (cold file caches)
8.5 seconds (warm file caches)

After this fix:
9.7 seconds (cold file caches)
5.7 seconds (warm file caches)

The names of the symbols are auto generated by appending the symbol's UserID to the end of the "___lldb_unnamed_symbol" string and is only done when the name is requested from a synthetic symbol if it has no name.

Differential Revision: https://reviews.llvm.org/D105160
2021-06-29 17:44:33 -07:00
Stella Stamenova c8a9c78e17 [lldb] Fix debug_loc.s which was broken after https://reviews.llvm.org/D103502
An empty location is now printed as <empty>
2021-06-29 13:54:48 -07:00
Stella Stamenova 9952d591cc [lldb] Fix globals-bss.cpp which was broken in https://reviews.llvm.org/D105055
-S replaced -s, so the test needs to be updated to use the new option
2021-06-29 13:39:18 -07:00
Stella Stamenova bb2cfca2f3 Revert D104488 and friends since it broke the windows bot
Reverts commits:
"Fix failing tests after https://reviews.llvm.org/D104488."
"Fix buildbot failure after https://reviews.llvm.org/D104488."
"Create synthetic symbol names on demand to improve memory consumption and startup times."

This series of commits broke the windows lldb bot and then failed to fix all of the failing tests.
2021-06-29 12:58:55 -07:00
Greg Clayton 42c05ed8be Fix failing tests after https://reviews.llvm.org/D104488.
Synthetic names no longer have the shared library name appended to the end.
2021-06-28 19:59:24 -07:00
Michał Górny d4c437c428 [lldb] [Process/elf-core] Fix reading NetBSD/i386 core dumps
Add support for extracting basic data from NetBSD/i386 core dumps.
FPU registers are not supported at the moment.

Differential Revision: https://reviews.llvm.org/D101091
2021-06-20 18:59:21 +02:00
Jim Ingham 80b2da42d2 Don't depend on the "run" alias doing shell expanding.
Instead dial it up explicitly.

This test started failing recently and I'm not sure why.  It also
doesn't make sense to me the replacing "run" with "process launch -X 1 --"
should make any difference - run is an alias for the latter.  But
it does pass with the change, and unless we are testing for the exact
run alias, it's better to ask for what we want explicitly.
2021-06-15 16:37:46 -07:00
David Spickett 31b9acaec5 Reland "[lldb] Set return status to failed when adding a command error"
This reverts commit ac031c8db2.

SB API usage has been corrected.
2021-06-14 14:26:47 +01:00
David Spickett ac031c8db2 Revert "[lldb] Set return status to failed when adding a command error" (and fixups)
This reverts commit f583029da3,
0f94d68a2e and
a2363c0cf9.

Due to test failures from incorrect SB API usage.
2021-06-14 12:09:42 +00:00
David Spickett a2363c0cf9 Reland "[lldb] Set return status to failed when adding a command error"
This reverts commit db93e4e70a.

This modifies TestRegsters.py to account for Darwin showing
AVX registers as part of "Floating Point Registers" instead
of in a separate "Advanced Vector Extensions" category.
2021-06-14 09:19:25 +00:00
David Spickett db93e4e70a Revert "[lldb] Set return status to failed when adding a command error"
This reverts commit e05b03cf4f.

While I investigate a register test failure:
http://green.lab.llvm.org/green/blue/organizations/jenkins/lldb-cmake/detail/lldb-cmake/32693/pipeline/
2021-06-09 09:41:59 +01:00
Jonas Devlieghere 1a216fb15a [lldb] Don't print script output twice in HandleCommand
When executing a script command in HandleCommand(s) we currently print
its output twice
You can see this issue in action when adding a breakpoint command:

(lldb) b main
Breakpoint 1: where = main.out`main + 13 at main.cpp:2:3, address = 0x0000000100003fad
(lldb) break command add 1 -o "script print(\"Hey!\")"
(lldb) r
Process 76041 launched: '/tmp/main.out' (x86_64)
Hey!
(lldb)  script print("Hey!")
Hey!
Process 76041 stopped

The issue is caused by HandleCommands using a temporary
CommandReturnObject and one of the commands (`script` in this case)
setting an immediate output stream. This causes the result to be printed
twice: once directly to the immediate output stream and once when
printing the result of HandleCommands.

This patch fixes the issue by introducing a new option to suppress
immediate output for temporary CommandReturnObjects.

Differential revision: https://reviews.llvm.org/D103349
2021-06-08 13:57:39 -07:00
David Spickett e05b03cf4f [lldb] Set return status to failed when adding a command error
There is a common pattern:
result.AppendError(...);
result.SetStatus(eReturnStatusFailed);

I found that some commands don't actually "fail" but only
print "error: ..." because the second line got missed.

This can cause you to miss a failed command when you're
using the Python interface during testing.
(and produce some confusing script results)

I did not find any place where you would want to add
an error without setting the return status, so just
set eReturnStatusFailed whenever you add an error to
a command result.

This change does not remove any of the now redundant
SetStatus. This should allow us to see if there are any
tests that have commands unexpectedly fail with this change.
(the test suite passes for me but I don't have access to all
the systems we cover so there could be some corner cases)

Some tests that failed on x86 and AArch64 have been modified
to work with the new behaviour.

Differential Revision: https://reviews.llvm.org/D103701
2021-06-08 09:41:07 +01:00
Daniel Rodríguez Troitiño 5e327785da [lldb] Match test dependencies name to other LLVM projects.
Other LLVM projects use the suffix `-depends` for the test dependencies,
however LLDB uses `-deps` and seems to be the only project under the
LLVM to do so.

In order to make the projects more homogeneous, switch all the
references to `lldb-test-deps` to `lldb-test-depends`.

Additionally, provide a compatibility target with the old name and
depending on the new name, in order to not break anyone workflow.

Reviewed By: JDevlieghere

Differential Revision: https://reviews.llvm.org/D102889
2021-05-21 00:10:27 -07:00
Jan Kratochvil 6d19c84cd9 [lldb] Improve invalid DWARF DW_AT_ranges error reporting
In D98289#inline-939112 @dblaikie said:
  Perhaps this could be more informative about what makes the range list
  index of 0 invalid? "index 0 out of range of range list table (with
  range list base 0xXXX) with offset entry count of XX (valid indexes
  0-(XX-1))" Maybe that's too verbose/not worth worrying about since
  this'll only be relevant to DWARF producers trying to debug their
  DWARFv5, maybe no one will ever see this message in practice. Just
  a thought.

Reviewed By: dblaikie

Differential Revision: https://reviews.llvm.org/D102851
2021-05-20 21:37:01 +02:00