The build system is currently miss-identifying GNU/kFreeBSD as FreeBSD.
This kind of simplification is sometimes useful, but in general it's not correct.
As GNU/kFreeBSD is an hybrid system, for kernel-related issues we want to match the
build definitions used for FreeBSD, whereas for userland-related issues we want to
match the definitions used for other systems with Glibc.
The current modification adjusts the build system so that they can be distinguished,
and explicitly adds GNU/kFreeBSD to the build checks in which it belongs.
Fixes bug #16446.
Patch by Robert Millan in the context of Debian.
llvm-svn: 185313
been suitable for preparing a single IR function
for operation in the target. However, using blocks
and lambdas creates other IR functions that also
need to be processed.
I have audited IRForTarget to make it process
multiple functions. Where IRForTarget would add
new instructions at the beginning of the main
expression function, it now adds them on-demand
in the function where they are needed. This is
enabled by a system of FunctionValueCaches, which
invoke a lambda to create or derive the values as
needed, or report the result of that lambda if it
has already been called for the given function.
<rdar://problem/14180236>
llvm-svn: 185224
bother checking if a region is safe to use. In
cases where regions need to be synthesized rather
than properly allocated, the memory reads required
to determine whether the area is used are
- insufficient, because intermediate locations
could be in use, and
- unsafe, because on some platforms reading from
memory can trigger events.
All this only makes a difference on platforms
where memory allocation in the target is impossible.
Behavior on platforms where it is possible should
stay the same.
<rdar://problem/14023970>
llvm-svn: 185046
The semi-unofficial way of returning a status from a Python command was to return a string (e.g. return "no such variable was found") that LLDB would pick as a clue of an error having happened
This checkin changes that:
- SBCommandReturnObject now exports a SetError() call, which can take an SBError or a plain C-string
- script commands now drop any return value and expect the SBCommandReturnObject ("return object") to be filled in appropriately - if you do nothing, a success will be assumed
If your commands were relying on returning a value and having LLDB pick that up as an error, please change your commands to SetError() through the return object or expect changes in behavior
llvm-svn: 184893
Made sure that temporary object created from HarmonizeThreadIdsForProfileData() doesn’t get passed around without creating an object first.
Reviewed by Greg
llvm-svn: 184769
Specifically, the ${target ${process ${thread and ${frame specifiers have been extended to allow a subkeyword .script:<fctName> (e.g. ${frame.script:FooFunction})
The functions are prototyped as
def FooFunction(Object,unused)
where object is of the respective SB-type (SBTarget for target.script, ... and so on)
This has not been implemented for ${var because it would be akin to a Python summary which is already well-defined in LLDB
llvm-svn: 184500
dematerialization of registers that caused
conditional breakpoint expressions not to
work properly. Also added a testcase.
<rdar://problem/14129252>
llvm-svn: 184451
The script was able to point out and save 40 bytes in each lldb_private::Section by being very careful where we need to have virtual destructors and also by re-ordering members.
llvm-svn: 184364
//------------------------------------------------------------------
/// Get all types matching \a type_mask from debug info in this
/// module.
///
/// @param[in] type_mask
/// A bitfield that consists of one or more bits logically OR'ed
/// together from the lldb::TypeClass enumeration. This allows
/// you to request only structure types, or only class, struct
/// and union types. Passing in lldb::eTypeClassAny will return
/// all types found in the debug information for this module.
///
/// @return
/// A list of types in this module that match \a type_mask
//------------------------------------------------------------------
lldb::SBTypeList
SBModule::GetTypes (uint32_t type_mask)
//------------------------------------------------------------------
/// Get all types matching \a type_mask from debug info in this
/// compile unit.
///
/// @param[in] type_mask
/// A bitfield that consists of one or more bits logically OR'ed
/// together from the lldb::TypeClass enumeration. This allows
/// you to request only structure types, or only class, struct
/// and union types. Passing in lldb::eTypeClassAny will return
/// all types found in the debug information for this compile
/// unit.
///
/// @return
/// A list of types in this compile unit that match \a type_mask
//------------------------------------------------------------------
lldb::SBTypeList
SBCompileUnit::GetTypes (uint32_t type_mask = lldb::eTypeClassAny);
This lets you request types by filling out a mask that contains one or more bits from the lldb::TypeClass enumerations, so you can only get the types you really want.
llvm-svn: 184251
Modifying our data formatters matching algorithm to ensure that "const X*" is treated as equivalent to "X*"
Also, a couple improvements to the "lldb types" logging
llvm-svn: 184215
Only add the — (double dash) separator to a command syntax if it has any options to be separated from arguments
Also remove the unused Translate() method from CommandObject
llvm-svn: 184163
This is a rewrite of the command history facility of LLDB
It takes the history management out of the CommandInterpreter into its own CommandHistory class
It reimplements the command history command to allow more combinations of options to work correctly (e.g. com hist -c 1 -s 5)
It adds a new --wipe (-w) option to command history to allow clearing the history on demand
It extends the lldbtest runCmd: and expect: methods to allow adding commands to history if need be
It adds a test case for the reimplemented facility
llvm-svn: 184140
If you type help command <word> <word> <word> <missingSubCommand> (e.g. help script import or help type summary fake), you will get help on the deepest matched command word (i.e. script or type summary in the examples)
Also, reworked the logic for commands to produce their help to make it more object-oriented
llvm-svn: 183822
325,000 breakpoints for running "breakpoint set --func-regex ." on lldb itself (after hitting a breakpoint at main so that LLDB.framework is loaded) used to take up to an hour to set, now we are down under a minute. With warm file caches, we are at 40 seconds, and that is with setting 325,000 breakpoint through the GDB remote API. Linux and the native debuggers might be faster. I haven't timed what how much is debug info parsing and how much is the protocol traffic to/from GDB remote.
That there were many performance issues. Most of them were due to storing breakpoints in the wrong data structures, or using the wrong iterators to traverse the lists, traversing the lists in inefficient ways, and not optimizing certain function name lookups/symbol merges correctly.
Debugging after that is also now very efficient. There were issues with replacing the breakpoint opcodes in memory that was read, and those routines were also fixed.
llvm-svn: 183820
Modified the test programs to use floating point constants that always will display correctly. We had some numbers that were being rounded, and now that we are using clang, we no longer round them and we get more correct results.
llvm-svn: 183792
Adding a new setting interpreter.stop-command-source-on-error that dictates a default behavior for whether command source should stop upon hitting an error
You can still override the setting for each individual invocation with the usual -e setting
llvm-svn: 183719
Add support for half-floats, as specified by IEEE-754-2008
With this checkin, you can now say:
(lldb) x/7hf foo
to read 7 half-floats at address foo
llvm-svn: 183716
condition in two different processes (with the
same target) could cause crashes. Now the breakpoint
condition is always evaluated (and possibly parsed)
by one thread at a time.
<rdar://problem/14083737>
llvm-svn: 183440
Two things:
1) fixing a bug where memory read was not clearing the m_force flag after it was passed, so that subsequent memory reads would not need to be forced even if over boundary
2) adding a setting target.max-memory-read-size that you can set instead of the hardcoded 1024 bytes limit we had before
llvm-svn: 183276
LLDB API versioning
This checkin makes the LLDB API versioned
We are starting at version 1.0 and will then revise and update the API from there
Further details:
API versioning
---------------------------------
The LLDB API is versioned independently of the LLDB source base
Our API version numbers are composed of a major and a minor number
The major number means a complete and stable revision of the API. Major numbers are compatibility breakers
(i.e. when we change the API major number, there is no promise of compatibility with the previous major version
and we are free to remove and/or change any APIs)
Minor numbers are a work-in-progress evolution of the API. APIs will not be removed or changed across minor versions
(minors do not break compatibility). However, we can deprecate APIs in minor versions or add new APIs in minor versions
A deprecated API is supposedly going to be removed in the next major version and will generate a warning if used
APIs we add in minor versions will not be removed (at least until the following major) but they might theoretically be deprecated
in a following minor version
Users are discouraged from using the LLDB version number to test for API features and should instead use the API version checking
as discussed below
API version checking
---------------------------------
You can (optionally) sign into an API version checking feature
To do so you need to define three macros:
LLDB_API_CHECK_VERSIONING - define to any value (or no value)
LLDB_API_MAJOR_VERSION_WANTED - which major version of the LLDB API you are targeting
LLDB_API_MINOR_VERSION_WANTED - which minor version of the LLDB API you are targeting
If these macros exist - LLDB will enable version checking of the public API
If LLDB_API_MAJOR_VERSION is not equal to LLDB_API_MAJOR_VERSION_WANTED we will immediately halt your compilation with an error
This is by design, since we do not make any promise of compatibility across major versions - if you really want to test your luck, disable the versioning altogether
If the major version test passes, you have signed up for a specific minor version of the API
Whenever we add or deprecate an API in a minor version, we will mark it with either
LLDB_API_NEW_IN_DOT_x - this API is new in LLDB .x
LLDB_API_DEPRECATED_IN_DOT_x - this API is deprecated as of .x
If you are using an API new in DOT_x
if LLDB_API_MINOR_VERSION_WANTED >= x then all is well, else you will get a compilation error
This is meant to prevent you from using APIs that are newer than whatever LLDB you want to target
If you are using an API deprecated in DOT_x
if LLDB_API_MINOR_VERSION_WANTED >= x then you will get a compilation warning, else all is well
This is meant to let you know that you are using an API that is deprecated and might go away
Caveats
---------------------------------
Version checking only works on clang on OSX - you will get an error if you try to enable it on any other OS/compiler
If you want to enable version checking on other platforms, you will need to define appropriate implementations for
LLDB_API_IMPL_DEPRECATED and LLDB_API_IMPL_TOONEW and any other infrastructure your compiler needs for this purpose
We have no deprecation-as-error mode
There is no support for API versioning in Python
We reserve to use macros whose names begin with LLDB_API_ and you should not use them in your source code as they might conflict
with present or future macro names we are using to implement versioning
For API implementors:
If you need to add a new public API call, please remember to add the LLDB_API_NEW_IN_DOT_x marker in the header file
and when you are done with adding stuff, to also update LLDB_API_MINOR_VERSION
If you want to remove a function, deprecate it first, by using LLDB_API_DEPRECATED_IN_DOT_x
and when you are done with deprecating stuff, to also update LLDB_API_MINOR_VERSION
A new major version (LLDB_API_MAJOR_VERSION++) is your only chance to remove and/or change API calls
but is probably quite a big deal and you might want to consider deprecating the existing calls for a while
before doing your changes
A couple more caveats:
Currently, the lldb-tool does NOT use the version checking feature. It would be a nice future improvement to make it do that, once we have proper version checking on other OSs
APIs marked as deprecated by a comment in the source are still deprecated just that way. A good purpose for API 1.1 might be to deprecate them with appropriate markers
llvm-svn: 183244
Fixing an issue where formats would not propagate from parents to children in all cases
Details follow:
an SBValue has children and those are fetched along with their values
Now, one calls SBValue::SetFormat() on the parent
Technically, the format choices should propagate onto the children (see ValueObject::GetFormat())
But if the children values are already fetched, they won't notice the format change and won't update themselves
This commit fixes that by making ValueObject::GetValueAsCString() check if any format change intervened from the previous call to the current one
A test case is also added
llvm-svn: 183030
Fixed performance issues that arose after changing SBTarget, SBProcess, SBThread and SBFrame over to using a std::shared_ptr to a ExecutionContextRef. The ExecutionContextRef doesn't store a std::weak_ptr to a stack frame because stack frames often get replaced with new version, so it held onto a StackID object that would allow us to ask the thread each time for the frame for the StackID. The linear function was too slow for large recursive stacks. We also fixed an issue where anytime the std::shared_ptr<ExecutionContextRef> in any SBTarget, SBProcess, SBThread objects was turned into an ExecutionContext object, it would try to resolve all items in the ExecutionContext which are shared pointers. Even if the StackID in the ExecutionContextRef was invalid, it was looking through all frames in every thread. This causes a lot of unnecessary frame accesses.
llvm-svn: 182627
Which means "platform process list" should work and list the architecture.
We are now parsing the elf build-id if it exists, which should allow us to load stripped symbols (looking at that next).
llvm-svn: 182610
settings set use-color [false|true]
settings set prompt "${ansi.bold}${ansi.fg.green}(lldb)${ansi.normal} "
also "--no-use-colors" on the command prompt
llvm-svn: 182609
removed the bitfields. This should be conforming
C++11, though, cf. C++03 9.6(3):
"
A bit-field shall have integral or enumeration
type (3.9.1).
"
llvm-svn: 182545
Added logging for the OS plug-in python objects in OperatingSystemPython so we can see the python dictionary returned from the plug-in when logging is enabled.
llvm-svn: 182530
Daniel Malea