Commit Graph

129 Commits

Author SHA1 Message Date
Jim Ingham 73ca05a2a0 Add the ability to capture the return value in a thread's stop info, and print it
as part of the thread format output.
Currently this is only done for the ThreadPlanStepOut.
Add a convenience API ABI::GetReturnValueObject.
Change the ValueObject::EvaluationPoint to BE an ExecutionContextScope, rather than
trying to hand out one of its subsidiary object's pointers.  That way this will always
be good.

llvm-svn: 146806
2011-12-17 01:35:57 +00:00
Jim Ingham 30b74fa886 Remove unnecessary #include.
llvm-svn: 146717
2011-12-16 00:46:12 +00:00
Greg Clayton e91b7957b2 Expose new read memory fucntion through python in SBProcess:
size_t
    SBProcess::ReadCStringFromMemory (addr_t addr, void *buf, size_t size, lldb::SBError &error);

    uint64_t
    SBProcess::ReadUnsignedFromMemory (addr_t addr, uint32_t byte_size, lldb::SBError &error);

    lldb::addr_t
    SBProcess::ReadPointerFromMemory (addr_t addr, lldb::SBError &error);

These ReadCStringFromMemory() has some SWIG type magic that makes it return the
python string directly and the "buf" is not needed:

error = SBError()
max_cstr_len = 256
cstr = lldb.process.ReadCStringFromMemory (0x1000, max_cstr_len, error)
if error.Success():
    ....

The other two functions behave as expteced. This will make it easier to get integer values
from the inferior process that are correctly byte swapped. Also for pointers, the correct
pointer byte size will be used.

Also cleaned up a few printf style warnings for the 32 bit lldb build on darwin.

llvm-svn: 146636
2011-12-15 03:14:23 +00:00
Greg Clayton 3649ef008d Fixed the remaining test suite failures after the recent objective C cleanup
and fixes we did. Now that objective C classes are represented by symbols with
their own type, there were a few more places in the objective C code that needed
to be fixed when searching for dynamic types.

Cleaned up the objective C runtime plug-in a bit to not keep having to create
constant strings and make one less memory access when we find an "isa" in the
objective C cache.

llvm-svn: 145799
2011-12-05 06:07:35 +00:00
Sean Callanan 09ab4b777c Added support to the Objective-C language runtime
to find Objective-C class types by looking in the
symbol tables for the individual object files.

I did this as follows:

- I added code to SymbolFileSymtab that vends
  Clang types for symbols matching the pattern
  "_OBJC_CLASS_$_NSMyClassName," making them
  appear as Objective-C classes.  This only occurs
  in modules that do not have debug information,
  since otherwise SymbolFileDWARF would be in
  charge of looking up types.

- I made a new SymbolVendor subclass for the
  Apple Objective-C runtime that is in charge of
  making global lookups of Objective-C types.  It
  currently just sends out type lookup requests to
  the appropriate SymbolFiles, but in the future we
  will probably extend it to query the runtime more
  completely.

I also modified a testcase whose behavior is changed
by the fact that we now actually return an Objective-C
type for __NSCFString.

llvm-svn: 145526
2011-11-30 22:11:59 +00:00
Jim Ingham ce553d885a Enhanced the ObjC DynamicCheckerFunction to test for "object responds to selector" as well as
"object borked"...  Also made the error when the checker fails reflect this fact rather than
report a crash at 0x0.

Also a little cleanup:
- StopInfoMachException had a redundant copy of the description string.
- ThreadPlanCallFunction had a redundant copy of the thread, and had a 
copy of the process that it didn't really need.

llvm-svn: 143419
2011-11-01 02:46:54 +00:00
Daniel Dunbar 647bf23510 AppleObjCTrampolineHandler: Use array_lengthof instead of unnecessary sentinel.
llvm-svn: 143375
2011-10-31 22:50:24 +00:00
Sean Callanan 7ba9636f0a Added an extra parameter to the object-checker
functions in the Objective-C language runtime
that is set to the selector that is being passed
to the object.

llvm-svn: 143083
2011-10-27 00:02:05 +00:00
Greg Clayton 85ae2e1349 Changed lldb_private::Type over to use the intrusive ref counted pointers
so we don't have to lookup types in a type list by ID.

Changed the DWARF parser to remove the "can externally complete myself" bits
from the type when we are in the process of completing the type itself to
avoid an onslaught of external visible decl requests from the 
clang::ExternalASTSource.

llvm-svn: 142461
2011-10-18 23:36:41 +00:00
Jim Ingham 87df91b866 Added the ability to restrict breakpoints by function name, function regexp, selector
etc to specific source files.
Added SB API's to specify these source files & also more than one module.
Added an "exact" option to CompileUnit's FindLineEntry API.

llvm-svn: 140362
2011-09-23 00:54:11 +00:00
Greg Clayton c14ee32db5 Converted the lldb_private::Process over to use the intrusive
shared pointers.

Changed the ExecutionContext over to use shared pointers for
the target, process, thread and frame since these objects can
easily go away at any time and any object that was holding onto
an ExecutionContext was running the risk of using a bad object.

Now that the shared pointers for target, process, thread and
frame are just a single pointer (they all use the instrusive
shared pointers) the execution context is much safer and still
the same size. 

Made the shared pointers in the the ExecutionContext class protected
and made accessors for all of the various ways to get at the pointers,
references, and shared pointers.

llvm-svn: 140298
2011-09-22 04:58:26 +00:00
Greg Clayton 4d122c4009 Adopt the intrusive pointers in:
lldb_private::Breakpoint
lldb_private::BreakpointLocations
lldb_private::BreakpointSite
lldb_private::Debugger
lldb_private::StackFrame
lldb_private::Thread
lldb_private::Target

llvm-svn: 139985
2011-09-17 08:33:22 +00:00
Greg Clayton 747bcb03d2 Convert lldb::ModuleSP to use an instrusive ref counted pointer.
We had some cases where getting the shared pointer for a module from
the global module list was causing a performance issue when debugging
with DWARF in .o files. Now that the module uses intrusive ref counts,
we can easily convert any pointer to a shared pointer.

llvm-svn: 139983
2011-09-17 06:21:20 +00:00
Enrico Granata 9128ee2f7a Redesign of the interaction between Python and frozen objects:
- introduced two new classes ValueObjectConstResultChild and ValueObjectConstResultImpl: the first one is a ValueObjectChild obtained from
   a ValueObjectConstResult, the second is a common implementation backend for VOCR and VOCRCh of method calls meant to read through pointers stored
   in frozen objects ; now such reads transparently move from host to target as required
 - as a consequence of the above, removed code that made target-memory copies of expression results in several places throughout LLDB, and also
   removed code that enabled to recognize an expression result VO as such
 - introduced a new GetPointeeData() method in ValueObject that lets you read a given amount of objects of type T from a VO
   representing a T* or T[], and doing dereferences transparently
   in private layer it returns a DataExtractor ; in public layer it returns an instance of a newly created lldb::SBData
 - as GetPointeeData() does the right thing for both frozen and non-frozen ValueObject's, reimplemented ReadPointedString() to use it
   en lieu of doing the raw read itself
 - introduced a new GetData() method in ValueObject that lets you get a copy of the data that backs the ValueObject (for pointers,
   this returns the address without any previous dereferencing steps ; for arrays it actually reads the whole chunk of memory)
   in public layer this returns an SBData, just like GetPointeeData()
 - introduced a new CreateValueFromData() method in SBValue that lets you create a new SBValue from a chunk of data wrapped in an SBData
   the limitation to remember for this kind of SBValue is that they have no address: extracting the address-of for these objects (with any
   of GetAddress(), GetLoadAddress() and AddressOf()) will return invalid values
 - added several tests to check that "p"-ing objects (STL classes, char* and char[]) will do the right thing
Solved a bug where global pointers to global variables were not dereferenced correctly for display
New target setting "max-string-summary-length" gives the maximum number of characters to show in a string when summarizing it, instead of the hardcoded 128
Solved a bug where the summary for char[] and char* would not be shown if the ValueObject's were dumped via the "p" command
Removed m_pointers_point_to_load_addrs from ValueObject. Introduced a new m_address_type_of_children, which each ValueObject can set to tell the address type
 of any pointers and/or references it creates. In the current codebase, this is load address most of the time (the only notable exception being file
 addresses that generate file address children UNLESS we have a live process)
Updated help text for summary-string
Fixed an issue in STL formatters where std::stlcontainer::iterator would match the container's synthetic children providers
Edited the syntax and help for some commands to have proper argument types

llvm-svn: 139160
2011-09-06 19:20:51 +00:00
Greg Clayton 56d9a1b31b Added a new plug-in type: lldb_private::OperatingSystem. The operating system
plug-ins are add on plug-ins for the lldb_private::Process class that can add
thread contexts that are read from memory. It is common in kernels to have
a lot of threads that are not currently executing on any cores (JTAG debugging
also follows this sort of thing) and are context switched out whose state is
stored in memory data structures. Clients can now subclass the OperatingSystem
plug-ins and then make sure their Create functions correcltly only enable 
themselves when the right binary/target triple are being debugged. The 
operating system plug-ins get a chance to attach themselves to processes just
after launching or attaching and are given a lldb_private::Process object 
pointer which can be inspected to see if the main executable, target triple,
or any shared  libraries match a case where the OS plug-in should be used.
Currently the OS plug-ins can create new threads, define the register contexts
for these threads (which can all be different if desired), and populate and
manage the thread info (stop reason, registers in the register context) as
the debug session goes on.

llvm-svn: 138228
2011-08-22 02:49:39 +00:00
Enrico Granata 217f91fc57 New category "gnu-libstdc++" provides summary for std::string and synthetic children for types std::map, std::list and std::vector
The category is enabled by default. If you run into issues with it, disable it and the previous behavior of LLDB is restored
 ** This is a temporary solution. The general solution to having formatters pulled in at startup should involve going through the Platform.
Fixed an issue in type synthetic list where a category with synthetic providers in it was not shown if all the providers were regex-based

llvm-svn: 137850
2011-08-17 19:07:52 +00:00
Enrico Granata 99f0b8f935 When defining a scripted command, it is possible to provide a docstring and that will be used as the help text for the command
If no docstring is provided, a default help text is created
LLDB will refuse to create scripted commands if the scripting language is anything but Python
Some additional comments in AppleObjCRuntimeV2.cpp to describe the memory layout expected by the dynamic type lookup code

llvm-svn: 137801
2011-08-17 01:30:04 +00:00
Enrico Granata d0b8505a64 Objective-C runtime now caches resolved ISA information for increased efficiency
llvm-svn: 137612
2011-08-15 15:56:02 +00:00
Johnny Chen d62fe94b45 Fix indentation for a log statement.
llvm-svn: 137178
2011-08-09 23:26:20 +00:00
Enrico Granata 890af72acc Basic handling of Objective-C tagged pointers: return a custom ISA and typename when one is detected
llvm-svn: 136819
2011-08-03 22:01:27 +00:00
Enrico Granata 9910bc855d Fixed an issue where the KVO swizzled type would be returned as the dynamic type instead of the actual user-level type
- see the test case in lang/objc/objc-dynamic-value for an example
Objective-C dynamic type lookup now works for every Objective-C type
 - previously, true dynamic lookup was only performed for type id

llvm-svn: 136763
2011-08-03 02:18:51 +00:00
Enrico Granata c3e320a7a0 Fixed a bug where a variable could not be formatted in a summary if its datatype already had a custom format
Fixed a bug where Objective-C variables coming out of the expression parser could crash the Python synthetic providers:
 - expression parser output has a "frozen data" component, which is a byte-exact copy of the value (in host memory),
   if trying to read into memory based on the host address, LLDB would crash. we are now passing the correct (target)
   pointer to the Python code
Objective-C "id" variables are now formatted according to their dynamic type, if the -d option to frame variable is used:
 - Code based on the Objective-C 2.0 runtime is used to obtain this information without running code on the target

llvm-svn: 136695
2011-08-02 17:27:39 +00:00
Enrico Granata 6f3533fb1d Public API changes:
- Completely new implementation of SBType
 - Various enhancements in several other classes
Python synthetic children providers for std::vector<T>, std::list<T> and std::map<K,V>:
 - these return the actual elements into the container as the children of the container
 - basic template name parsing that works (hopefully) on both Clang and GCC
 - find them in examples/synthetic and in the test suite in functionalities/data-formatter/data-formatter-python-synth
New summary string token ${svar :
 - the syntax is just the same as in ${var but this new token lets you read the values
   coming from the synthetic children provider instead of the actual children
 - Python providers above provide a synthetic child len that returns the number of elements
   into the container
Full bug fix for the issue in which getting byte size for a non-complete type would crash LLDB
Several other fixes, including:
 - inverted the order of arguments in the ClangASTType constructor
 - EvaluationPoint now only returns SharedPointer's to Target and Process
 - the help text for several type subcommands now correctly indicates argument-less options as such

llvm-svn: 136504
2011-07-29 19:53:35 +00:00
Jim Ingham e3846fd16a Don't delete & remake the exception breakpoints every time you need them. Make them once & enable/disable
them as appropriate.
Also reformatted the lldb summaries to make them easier to read, and added one.  I'll do more as I get time.

llvm-svn: 135827
2011-07-23 00:12:05 +00:00
Enrico Granata 20edcdbe8a The implementation of categories is now synchronization safe
Code cleanup:
 - The Format Manager implementation is now split between two files: FormatClasses.{h|cpp} where the
   actual formatter classes (ValueFormat, SummaryFormat, ...) are implemented and
   FormatManager.{h|cpp} where the infrastructure classes (FormatNavigator, FormatManager, ...)
   are contained. The wrapper code always remains in Debugger.{h|cpp}
 - Several leftover fields, methods and comments from previous design choices have been removed
type category subcommands (enable, disable, delete) now can take a list of category names as input
 - for type category enable, saying "enable A B C" is the same as saying
    enable C
    enable B
    enable A
   (the ordering is relevant in enabling categories, and it is expected that a user typing
    enable A B C wants to look into category A, then into B, then into C and not the other
    way round)
 - for the other two commands, the order is not really relevant (however, the same inverted ordering
   is used for consistency)

llvm-svn: 135494
2011-07-19 18:03:25 +00:00
Greg Clayton 644247c1dc Added "target variable" command that allows introspection of global
variables prior to running your binary. Zero filled sections now get
section data correctly filled with zeroes when Target::ReadMemory
reads from the object file section data.

Added new option groups and option values for file lists. I still need
to hook up all of the options to "target variable" to allow more complete
introspection by file and shlib.

Added the ability for ValueObjectVariable objects to be created with
only the target as the execution context. This allows them to be read
from the object files through Target::ReadMemory(...). 

Added a "virtual Module * GetModule()" function to the ValueObject
class. By default it will look to the parent variable object and
return its module. The module is needed when we have global variables
that have file addresses (virtual addresses that are specific to
module object files) and in turn allows global variables to be displayed
prior to running.

Removed all of the unused proxy object support that bit rotted in 
lldb_private::Value.

Replaced a lot of places that used "FileSpec::Compare (lhs, rhs) == 0" code
with the more efficient "FileSpec::Equal (lhs, rhs)".

Improved logging in GDB remote plug-in.

llvm-svn: 134579
2011-07-07 01:59:51 +00:00
Greg Clayton e305594277 Centralize all of the type name code so that we always strip the leading
"struct ", "class ", and "union " from the start of any type names that are
extracted from clang QualType objects. I had to fix test suite cases that
were expecting the struct/union/class prefix to be there.

llvm-svn: 134132
2011-06-30 02:28:26 +00:00
Jim Ingham d555bacca3 Add support for looking up ivar offset from the ObjC runtime.
llvm-svn: 133831
2011-06-24 22:03:24 +00:00
Greg Clayton 007d5be653 lldb-59.
llvm-svn: 132304
2011-05-30 00:49:24 +00:00
Jim Ingham 0a042ced97 Fix a thinko in converting to ReadCStringFromMemory.
llvm-svn: 131984
2011-05-24 19:08:00 +00:00
Greg Clayton f3ef3d2af9 Added new lldb_private::Process memory read/write functions to stop a bunch
of duplicated code from appearing all over LLDB:

lldb::addr_t
Process::ReadPointerFromMemory (lldb::addr_t vm_addr, Error &error);

bool
Process::WritePointerToMemory (lldb::addr_t vm_addr, lldb::addr_t ptr_value, Error &error);

size_t
Process::ReadScalarIntegerFromMemory (lldb::addr_t addr, uint32_t byte_size, bool is_signed, Scalar &scalar, Error &error);

size_t
Process::WriteScalarToMemory (lldb::addr_t vm_addr, const Scalar &scalar, uint32_t size, Error &error);

in lldb_private::Process the following functions were renamed:

From:
uint64_t
Process::ReadUnsignedInteger (lldb::addr_t load_addr, 
                              size_t byte_size,
                              Error &error);

To:
uint64_t
Process::ReadUnsignedIntegerFromMemory (lldb::addr_t load_addr, 
                                        size_t byte_size,
                                        uint64_t fail_value, 
                                        Error &error);

Cleaned up a lot of code that was manually doing what the above functions do
to use the functions listed above.

Added the ability to get a scalar value as a buffer that can be written down
to a process (byte swapping the Scalar value if needed):

uint32_t 
Scalar::GetAsMemoryData (void *dst,
                        uint32_t dst_len, 
                        lldb::ByteOrder dst_byte_order,
                        Error &error) const;

The "dst_len" can be smaller that the size of the scalar and the least 
significant bytes will be written. "dst_len" can also be larger and the
most significant bytes will be padded with zeroes. 

Centralized the code that adds or removes address bits for callable and opcode
addresses into lldb_private::Target:

lldb::addr_t
Target::GetCallableLoadAddress (lldb::addr_t load_addr, AddressClass addr_class) const;

lldb::addr_t
Target::GetOpcodeLoadAddress (lldb::addr_t load_addr, AddressClass addr_class) const;

All necessary lldb_private::Address functions now use the target versions so
changes should only need to happen in one place if anything needs updating.

Fixed up a lot of places that were calling :

addr_t
Address::GetLoadAddress(Target*);

to call the Address::GetCallableLoadAddress() or Address::GetOpcodeLoadAddress()
as needed. There were many places in the breakpoint code where things could
go wrong for ARM if these weren't used.

llvm-svn: 131878
2011-05-22 22:46:53 +00:00
Greg Clayton cff851ab33 Added functions to lldb_private::Address to set an address from a load address
and set the address as an opcode address or as a callable address. This is
needed in various places in the thread plans to make sure that addresses that
might be found in symbols or runtime might already have extra bits set (ARM/Thumb).
The new functions are:

bool
Address::SetCallableLoadAddress (lldb::addr_t load_addr, Target *target);

bool
Address::SetOpcodeLoadAddress (lldb::addr_t load_addr, Target *target);

SetCallableLoadAddress will initialize a section offset address if it can,
and if so it might possibly set some bits in the address to make the address
callable (bit zero might get set for ARM for Thumb functions).

SetOpcodeLoadAddress will initialize a section offset address using the
specified target and it will strip any special address bits if needed 
depending on the target.

Fixed the ABIMacOSX_arm::GetArgumentValues() function to require arguments
1-4 to be in the needed registers (previously this would incorrectly fallback
to the stack) and return false if unable to get the register values. The
function was also modified to first look for the generic argument registers
and then fall back to finding the registers by name.

Fixed the objective trampoline handler to use the new Address::SetOpcodeLoadAddress
function when needed to avoid address mismatches when trying to complete 
steps into objective C methods. Make similar fixes inside the
AppleThreadPlanStepThroughObjCTrampoline::ShouldStop() function.

Modified ProcessGDBRemote::BuildDynamicRegisterInfo(...) to be able to deal with
the new generic argument registers.

Modified RNBRemote::HandlePacket_qRegisterInfo() to handle the new generic
argument registers on the debugserver side.

Modified DNBArchMachARM::NumSupportedHardwareBreakpoints() to be able to 
detect how many hardware breakpoint registers there are using a darwin sysctl.
Did the same for hardware watchpoints in 
DNBArchMachARM::NumSupportedHardwareWatchpoints().

llvm-svn: 131834
2011-05-22 04:32:55 +00:00
Greg Clayton 5fe15d2d52 Fixed an issue in GDBRemoteCommunicationClient where we weren't listening to
the "payload_length" argument for the "payload" packet data. This meant we 
could end up sending random extra data with a packet depending on how the 
packet was constructed.

Fixed GDBRemoteRegisterContext to properly save and restore all registers. 
Previous fixes had been added to work around the "payload_length" issues fixed
above and aren't needed anymore.

Fix logging in GDBRemoteCommunication to make sure we log the correct packet
data being sent by using the packet length when dumping the packet contents.

Added register definitions for 'arm-lldb' in the "disasm-gdb-remote.pl" script
so if you have a register dump from the GDB remote that doesn't include the
qRegisterInfo packets, you can manually tell the script which registers are
which.

llvm-svn: 131715
2011-05-20 03:15:54 +00:00
Charles Davis 51be6b5dfa Add the LanguageRuntime plugins to the makefile build, and remove the
Mac OS X Process plugin from the build.

I'm surprised no one caught this earlier. Am I the only one who builds with
the makefiles on Mac?

llvm-svn: 131704
2011-05-19 23:44:09 +00:00
Charles Davis c9c24af6f2 Fix trailing commas at the end of enumerator lists.
Seriously, I have no idea how you guys managed to build LLDB before.

llvm-svn: 131684
2011-05-19 21:59:12 +00:00
Greg Clayton 70b5765740 Added the ability to get the return value from a ThreadPlanCallFunction
thread plan. In order to get the return value, you can call:

        void
        ThreadPlanCallFunction::RequestReturnValue (lldb::ValueSP &return_value_sp);
        
This registers a shared pointer to a return value that will get filled in if
everything goes well. After the thread plan is run the return value will be
extracted for you.

Added an ifdef to be able to switch between the LLVM MCJIT and the standand JIT.
We currently have the standard JIT selected because we have some work to do to
get the MCJIT fuctioning properly.

Added the ability to call functions with 6 argument in the x86_64 ABI.

Added the ability for GDBRemoteCommunicationClient to detect if the allocate
and deallocate memory packets are supported and to not call allocate memory 
("_M") or deallocate ("_m") if we find they aren't supported.

Modified the ProcessGDBRemote::DoAllocateMemory(...) and ProcessGDBRemote::DoDeallocateMemory(...) 
to be able to deal with the allocate and deallocate memory packets not being 
supported. If they are not supported, ProcessGDBRemote will switch to calling
"mmap" and "munmap" to allocate and deallocate memory instead using our 
trivial function call support.

Modified the "void ProcessGDBRemote::DidLaunchOrAttach()" to correctly ignore 
the qHostInfo triple information if any was specified in the target. Currently 
if the target only specifies an architecture when creating the target:

(lldb) target create --arch i386 a.out

Then the vendor, os and environemnt will be adopted by the target.

If the target was created with any triple that specifies more than the arch:

(lldb) target create --arch i386-unknown-unknown a.out

Then the target will maintain its triple and not adopt any new values. This
can be used to help force bare board debugging where the dynamic loader for
static files will get used and users can then use "target modules load ..."
to set addressses for any files that are desired.

Added back some convenience functions to the lldb_private::RegisterContext class
for writing registers with unsigned values. Also made all RegisterContext
constructors explicit to make sure we know when an integer is being converted
to a RegisterValue. 

llvm-svn: 131370
2011-05-15 01:25:55 +00:00
Greg Clayton 31f1d2f535 Moved all code from ArchDefaultUnwindPlan and ArchVolatileRegs into their
respective ABI plugins as they were plug-ins that supplied ABI specfic info.

Also hookep up the UnwindAssemblyInstEmulation so that it can generate the
unwind plans for ARM.

Changed the way ABI plug-ins are handed out when you get an instance from
the plug-in manager. They used to return pointers that would be mananged
individually by each client that requested them, but now they are handed out
as shared pointers since there is no state in the ABI objects, they can be
shared.

llvm-svn: 131193
2011-05-11 18:39:18 +00:00
Jim Ingham 2837b766f5 Change "frame var" over to using OptionGroups (and thus the OptionGroupVariableObjectDisplay).
Change the boolean "use_dynamic" over to a tri-state, no-dynamic, dynamic-w/o running target,
and dynamic with running target.

llvm-svn: 130832
2011-05-04 03:43:18 +00:00
Jim Ingham 61be0903e5 Adding support for fetching the Dynamic Value for ObjC Objects.
llvm-svn: 130701
2011-05-02 18:13:59 +00:00
Jim Ingham 78a685aa2d Add support for "dynamic values" for C++ classes. This currently only works for "frame var" and for the
expressions that are simple enough to get passed to the "frame var" underpinnings.  The parser code will
have to be changed to also query for the dynamic types & offsets as it is looking up variables.

The behavior of "frame var" is controlled in two ways.  You can pass "-d {true/false} to the frame var
command to get the dynamic or static value of the variables you are printing.

There's also a general setting:

target.prefer-dynamic-value (boolean) = 'true'

which is consulted if you call "frame var" without supplying a value for the -d option.

llvm-svn: 129623
2011-04-16 00:01:13 +00:00
Jim Ingham 8d543de400 Remove unneeded ExecutionContextScope variables.
llvm-svn: 128685
2011-03-31 23:01:21 +00:00
Greg Clayton e0d378b334 Fixed the LLDB build so that we can have private types, private enums and
public types and public enums. This was done to keep the SWIG stuff from
parsing all sorts of enums and types that weren't needed, and allows us to
abstract our API better.

llvm-svn: 128239
2011-03-24 21:19:54 +00:00
Jim Ingham b7603bb48d Relax the constraint on the types of ValueObjects that we'll by default try the
ObjC runtime for print object to Pointer AND Integer (from just pointer.)

llvm-svn: 127841
2011-03-18 00:05:18 +00:00
Jim Ingham 8268ccab60 Fix a problem where we were looking up the class pointer in the {class/sel -> implementation} cache for a objc_msgSendSuper call - where we should have looked up the class's super-class.
llvm-svn: 127830
2011-03-17 21:04:33 +00:00
Jim Ingham 35944dda10 Get ObjC stepping working again when the process is not the default host architecture.
llvm-svn: 127825
2011-03-17 20:02:56 +00:00
Greg Clayton e996fd30be LLDB now has "Platform" plug-ins. Platform plug-ins are plug-ins that provide
an interface to a local or remote debugging platform. By default each host OS
that supports LLDB should be registering a "default" platform that will be
used unless a new platform is selected. Platforms are responsible for things
such as:
- getting process information by name or by processs ID
- finding platform files. This is useful for remote debugging where there is 
  an SDK with files that might already or need to be cached for debug access.
- getting a list of platform supported architectures in the exact order they
  should be selected. This helps the native x86 platform on MacOSX select the
  correct x86_64/i386 slice from universal binaries.
- Connect to remote platforms for remote debugging
- Resolving an executable including finding an executable inside platform
  specific bundles (macosx uses .app bundles that contain files) and also
  selecting the appropriate slice of universal files for a given platform.

So by default there is always a local platform, but remote platforms can be
connected to. I will soon be adding a new "platform" command that will support
the following commands:
(lldb) platform connect --name machine1 macosx connect://host:port
Connected to "machine1" platform.
(lldb) platform disconnect macosx

This allows LLDB to be well setup to do remote debugging and also once 
connected process listing and finding for things like:
(lldb) process attach --name x<TAB>

The currently selected platform plug-in can now auto complete any available
processes that start with "x". The responsibilities for the platform plug-in
will soon grow and expand.

llvm-svn: 127286
2011-03-08 22:40:15 +00:00
Greg Clayton 514487e806 Made lldb_private::ArchSpec contain much more than just an architecture. It
now, in addition to cpu type/subtype and architecture flavor, contains:
- byte order (big endian, little endian)
- address size in bytes
- llvm::Triple for true target triple support and for more powerful plug-in
  selection.

llvm-svn: 125602
2011-02-15 21:59:32 +00:00
Greg Clayton 53239f00b5 Moved FileSpec into the Host layer since it will vary from host to host.
We have a common unix implementation in lldb/source/Host/common/FileSpec.cpp.

llvm-svn: 125078
2011-02-08 05:05:52 +00:00
Jim Ingham 9b23df5903 Initialize an uninitialized variable. I don't think this is ever used, but just to be sure...
llvm-svn: 124304
2011-01-26 19:09:39 +00:00
Greg Clayton 1a65ae11bd Enabled extra warnings and fixed a bunch of small issues.
llvm-svn: 124250
2011-01-25 23:55:37 +00:00
Greg Clayton 481cef25dc Added support for stepping out of a frame. If you have 10 stack frames, and you
select frame #3, you can then do a step out and be able to go directly to the
frame above frame #3! 

Added StepOverUntil and StepOutOfFrame to the SBThread API to allow more powerful
stepping.

llvm-svn: 123970
2011-01-21 06:11:58 +00:00
Jim Ingham 5caed4e8a8 Add a method on the ObjC Language Runtime that returns the runtime version.
llvm-svn: 123693
2011-01-17 23:06:54 +00:00
Greg Clayton 388b33b5cd Another fix for the objective C runtime object checker to not use NULL when it isn't defined.
llvm-svn: 123617
2011-01-17 06:17:42 +00:00
Greg Clayton 7d87b92d2e Fix the objective C object validator that I broke. When we have ObjC runtime
V2 and we only have gdb_class_getClass, then make sure the isa isn't NULL 
before trying to call gdb_class_getClass otherwise we end up deadlocking the
objective C runtime.

llvm-svn: 123615
2011-01-17 04:34:26 +00:00
Greg Clayton 1629c43dd3 Removed printf statements in code.
llvm-svn: 123455
2011-01-14 19:21:25 +00:00
Greg Clayton ca512b397c Fixed an error in the type map for "char **" that was a bad memory smasher.
Anytime we had a valid python list that was trying to go from Python down into
our C++ API, it was allocating too little memory and it ended up smashing
whatever was next to the allocated memory.

Added typemap conversions for "void *, size_t" so we can get 
SBProcess::ReadMemory() working. Also added a typemap for "const void *, size_t"
so we can get SBProcess::WriteMemory() to work.

Fixed an issue in the DWARF parser where we weren't correctly calculating the
DeclContext for all types and classes. We now should be a lot more accurate.
Fixes include: enums should now be setting their parent decl context correctly.
We saw a lot of examples where enums in classes were not being properly
namespace scoped. Also, classes within classes now get properly scoped.

Fixed the objective C runtime pointer checkers to let "nil" pointers through
since these are accepted by compiled code. We also now don't call "abort()"
when a pointer doesn't validate correctly since this was wreaking havoc on
the process due to the way abort() works. We now just dereference memory
which should give us an exception from which we can easily and reliably 
recover.

llvm-svn: 123428
2011-01-14 04:54:56 +00:00
Greg Clayton 710dd5aebf Spelling changes applied from lldb_spelling.diffs from Bruce Mitchener.
Thanks Bruce!

llvm-svn: 123083
2011-01-08 20:28:42 +00:00
Greg Clayton 8b2fe6dcbd Modified LLDB expressions to not have to JIT and run code just to see variable
values or persistent expression variables. Now if an expression consists of
a value that is a child of a variable, or of a persistent variable only, we
will create a value object for it and make a ValueObjectConstResult from it to
freeze the value (for program variables only, not persistent variables) and
avoid running JITed code. For everything else we still parse up and JIT code
and run it in the inferior. 

There was also a lot of clean up in the expression code. I made the 
ClangExpressionVariables be stored in collections of shared pointers instead
of in collections of objects. This will help stop a lot of copy constructors on
these large objects and also cleans up the code considerably. The persistent
clang expression variables were moved over to the Target to ensure they persist
across process executions.

Added the ability for lldb_private::Target objects to evaluate expressions.
We want to evaluate expressions at the target level in case we aren't running
yet, or we have just completed running. We still want to be able to access the
persistent expression variables between runs, and also evaluate constant 
expressions. 

Added extra logging to the dynamic loader plug-in for MacOSX. ModuleList objects
can now dump their contents with the UUID, arch and full paths being logged with
appropriate prefix values.

Thread hardened the Communication class a bit by making the connection auto_ptr
member into a shared pointer member and then making a local copy of the shared
pointer in each method that uses it to make sure another thread can't nuke the
connection object while it is being used by another thread.

Added a new file to the lldb/test/load_unload test that causes the test a.out file
to link to the libd.dylib file all the time. This will allow us to test using
the DYLD_LIBRARY_PATH environment variable after moving libd.dylib somewhere else.

llvm-svn: 121745
2010-12-14 02:59:59 +00:00
Jim Ingham 957373fc84 Changing the ObjC find method implementation to use a ClangUtilityFunction inserted into the target. Consolidate all the
logic for finding the target of a method dispatch into this function, insert & call it.  Gets calls to super, and all the
fixup & fixedup variants working properly.  Also gets the class from the object so that we step through KVO wrapper methods
into the actual user code.

llvm-svn: 121437
2010-12-10 00:26:25 +00:00
Jim Ingham f48169bb4f Moved the code in ClangUserExpression that set up & ran the thread plan with timeouts, and restarting with all threads into a utility function in Process. This required a bunch of renaming.
Added a ThreadPlanCallUserExpression that differs from ThreadPlanCallFunction in that it holds onto a shared pointer to its ClangUserExpression so that can't go away before the thread plan is done using it.

Fixed the stop message when you hit a breakpoint while running a user expression so it is more obvious what has happened.

llvm-svn: 120386
2010-11-30 02:22:11 +00:00
Greg Clayton 526e5afb2d Modified the lldb_private::Type clang type resolving code to handle three
cases when getting the clang type:
- need only a forward declaration
- need a clang type that can be used for layout (members and args/return types)
- need a full clang type

This allows us to partially parse the clang types and be as lazy as possible.
The first case is when we just need to declare a type and we will complete it
later. The forward declaration happens only for class/union/structs and enums.
The layout type allows us to resolve the full clang type _except_ if we have
any modifiers on a pointer or reference (both R and L value). In this case
when we are adding members or function args or return types, we only need to
know how the type will be laid out and we can defer completing the pointee
type until we later need it. The last type means we need a full definition for
the clang type.

Did some renaming of some enumerations to get rid of the old "DC" prefix (which
stands for DebugCore which is no longer around).

Modified the clang namespace support to be almost ready to be fed to the
expression parser. I made a new ClangNamespaceDecl class that can carry around
the AST and the namespace decl so we can copy it into the expression AST. I
modified the symbol vendor and symbol file plug-ins to use this new class.

llvm-svn: 118976
2010-11-13 03:52:47 +00:00
Sean Callanan c126acc1a9 Temporary extension of the timeout for Objective-C
object diagnostic expressions while we work on the
logic for handling the timeout.

llvm-svn: 118873
2010-11-12 01:49:03 +00:00
Sean Callanan 6f86aa630f Removed redundant code for object introspection.
llvm-svn: 118872
2010-11-12 01:41:35 +00:00
Jim Ingham 06e827cc43 Add ThreadPlanTracer class to allow instruction step tracing of execution.
Also changed eSetVarTypeBool to eSetVarTypeBoolean to make it consistent with eArgTypeBoolean.

llvm-svn: 118824
2010-11-11 19:26:09 +00:00
Greg Clayton c615ce4964 Fixed an issue in the DWARF parser that was causing forward declarations
to not get resolved.

Fixed the "void **isa_ptr" variable inside the objective C verifier to start
with a '$' character so we don't go looking for it in our program.

Moved the lookup for "$__lldb_class" into the part that knows we are looking
for internal types that start with a '$'.

llvm-svn: 118488
2010-11-09 04:42:43 +00:00
Greg Clayton 2d4edfbc6a Modified all logging calls to hand out shared pointers to make sure we
don't crash if we disable logging when some code already has a copy of the
logger. Prior to this fix, logs were handed out as pointers and if they were
held onto while a log got disabled, then it could cause a crash. Now all logs
are handed out as shared pointers so this problem shouldn't happen anymore.
We are also using our new shared pointers that put the shared pointer count
and the object into the same allocation for a tad better performance.

llvm-svn: 118319
2010-11-06 01:53:30 +00:00
Jim Ingham 399f1cafa6 Added the equivalent of gdb's "unwind-on-signal" to the expression command, and a parameter to control it in ClangUserExpression, and on down to ClangFunction.
llvm-svn: 118290
2010-11-05 19:25:48 +00:00
Sean Callanan 2a39652303 Fixed error handling when the utility functions
that check pointer validity fail to parse.  Now
lldb does not crash in that case.  Also added
support for checking Objective-C class validity
in the Version 1 runtime as well as Version 2
runtimes with varying levels of available debug
support.

llvm-svn: 118271
2010-11-05 00:57:06 +00:00
Jim Ingham 5822173bc8 Handle stepping through ObjC vtable trampoline code.
llvm-svn: 118270
2010-11-05 00:18:21 +00:00
Jim Ingham 2a5e0f03fb Add a ObjC V1 runtime, and a generic AppleObjCRuntime plugin.
Also move the Checker creation into the Apple Runtime code.

llvm-svn: 118255
2010-11-04 18:30:59 +00:00
Sean Callanan f211510ff6 Factored the code that implements breakpoints on
exceptions for different languages out of 
ThreadPlanCallFunction and put it into the 
appropriate language runtimes.

llvm-svn: 118200
2010-11-03 22:19:38 +00:00
Sean Callanan 0d546439b9 Using proper Objective-C types doesn't seem to
make the sky fall.

llvm-svn: 117767
2010-10-30 01:46:19 +00:00
Jim Ingham e3dad2c881 Use the ValueObject directly where possible.
llvm-svn: 116638
2010-10-15 22:53:49 +00:00
Greg Clayton 0603aa9dc8 There are now to new "settings set" variables that live in each debugger
instance:

settings set frame-format <string>
settings set thread-format <string>

This allows users to control the information that is seen when dumping
threads and frames. The default values are set such that they do what they
used to do prior to changing over the the user defined formats.

This allows users with terminals that can display color to make different
items different colors using the escape control codes. A few alias examples
that will colorize your thread and frame prompts are:

settings set frame-format 'frame #${frame.index}: \033[0;33m${frame.pc}\033[0m{ \033[1;4;36m${module.file.basename}\033[0;36m ${function.name}{${function.pc-offset}}\033[0m}{ \033[0;35mat \033[1;35m${line.file.basename}:${line.number}}\033[0m\n'

settings set thread-format 'thread #${thread.index}: \033[1;33mtid\033[0;33m = ${thread.id}\033[0m{, \033[0;33m${frame.pc}\033[0m}{ \033[1;4;36m${module.file.basename}\033[0;36m ${function.name}{${function.pc-offset}}\033[0m}{, \033[1;35mstop reason\033[0;35m = ${thread.stop-reason}\033[0m}{, \033[1;36mname = \033[0;36m${thread.name}\033[0m}{, \033[1;32mqueue = \033[0;32m${thread.queue}}\033[0m\n'

A quick web search for "colorize terminal output" should allow you to see what
you can do to make your output look like you want it.

The "settings set" commands above can of course be added to your ~/.lldbinit
file for permanent use.

Changed the pure virtual 
    void ExecutionContextScope::Calculate (ExecutionContext&);
To:
    void ExecutionContextScope::CalculateExecutionContext (ExecutionContext&);
    
I did this because this is a class that anything in the execution context
heirarchy inherits from and "target->Calculate (exe_ctx)" didn't always tell
you what it was really trying to do unless you look at the parameter.

llvm-svn: 115485
2010-10-04 01:05:56 +00:00
Jim Ingham 6c68fb4549 Add "-o" option to "expression" which prints the object description if available.
llvm-svn: 115115
2010-09-30 00:54:27 +00:00
Greg Clayton 1be10fca5f Fixed the forward declaration issue that was present in the DWARF parser after
adding methods to C++ and objective C classes. In order to make methods, we
need the function prototype which means we need the arguments. Parsing these
could cause a circular reference that caused an  assertion.

Added a new typedef for the clang opaque types which are just void pointers:
lldb::clang_type_t. This appears in lldb-types.h.

This was fixed by enabling struct, union, class, and enum types to only get
a forward declaration when we make the clang opaque qual type for these
types. When they need to actually be resolved, lldb_private::Type will call
a new function in the SymbolFile protocol to resolve a clang type when it is
not fully defined (clang::TagDecl::getDefinition() returns NULL). This allows
us to be a lot more lazy when parsing clang types and keeps down the amount
of data that gets parsed into the ASTContext for each module. 

Getting the clang type from a "lldb_private::Type" object now takes a boolean
that indicates if a forward declaration is ok:

    clang_type_t lldb_private::Type::GetClangType (bool forward_decl_is_ok);
    
So function prototypes that define parameters that are "const T&" can now just
parse the forward declaration for type 'T' and we avoid circular references in
the type system.

llvm-svn: 115012
2010-09-29 01:12:09 +00:00
Jim Ingham a8298d3ba5 Make sure we've read in the ObjC runtime library data before trying to use it...
llvm-svn: 114956
2010-09-28 16:06:31 +00:00
Jim Ingham 5a369128f6 Replace the vestigial Value::GetOpaqueCLangQualType with the more correct Value::GetValueOpaqueClangQualType.
But mostly, move the ObjC Trampoline handling code from the MacOSX dyld plugin to the AppleObjCRuntime classes.

llvm-svn: 114935
2010-09-28 01:25:32 +00:00
Jim Ingham 2277701c7b Committing the skeleton of Language runtime plugin classes.
llvm-svn: 114620
2010-09-23 02:01:19 +00:00