This version relies on a newer and more convenient way
to use a class to implement a command. It has been in place
since early 2015, so it should be pretty safe to use.
llvm-svn: 317043
When the expression parser does name resolution for local
variables in C++ closures it doesn't give the local name
priority over other global symbols of the same name. heap.py
uses "info" which is a fairly common name, and so the commands
in it fail. This is a workaround, just use lldb_info not info.
<rdar://problem/34026140>
llvm-svn: 314959
Sometimes you want to step along and print a local each time as you go.
You can do that with stop hooks, but that's a little heavy-weight. This
is a sketch of a command that steps and then does "frame variable" on all
its arguments.
llvm-svn: 314958
Sometimes you are debugging in source, but you really only want to see
the disassembly. That's easy to do but you have to set a few variables.
This command toggles between your old values, and a disassembly only mode.
llvm-svn: 300902
*** to conform to clang-format’s LLVM style. This kind of mass change has
*** two obvious implications:
Firstly, merging this particular commit into a downstream fork may be a huge
effort. Alternatively, it may be worth merging all changes up to this commit,
performing the same reformatting operation locally, and then discarding the
merge for this particular commit. The commands used to accomplish this
reformatting were as follows (with current working directory as the root of
the repository):
find . \( -iname "*.c" -or -iname "*.cpp" -or -iname "*.h" -or -iname "*.mm" \) -exec clang-format -i {} +
find . -iname "*.py" -exec autopep8 --in-place --aggressive --aggressive {} + ;
The version of clang-format used was 3.9.0, and autopep8 was 1.2.4.
Secondly, “blame” style tools will generally point to this commit instead of
a meaningful prior commit. There are alternatives available that will attempt
to look through this change and find the appropriate prior commit. YMMV.
llvm-svn: 280751
This class enables one to easily write a synthetic child provider by writing a class that returns pairs of names and primitive Python values - the base class then converts those into LLDB SBValues
Comes with a test case
llvm-svn: 280172
A few fixes:
- Check the process state to make sure it is stopped
- Grab the frame from the "exe_ctx" so this will work during breakpoint callbacks
- Print out the SBDeclaration objects of the variables that shadow each other so we can see the source locations of which variable declarations are shodowing each other.
llvm-svn: 273963
This shows how to grab individual blocks from stack frames and get only the variables from those blocks. It then will iterate over all of the parent blocks and look for shadowed variables.
llvm-svn: 273604
This patch fixes a bunch of issues that show up on big-endian systems:
- The gnu_libstdcpp.py script doesn't follow the way libstdc++ encodes
bit vectors: it should identify the enclosing *word* and then access
the appropriate bit within that word. Instead, the script simply
operates on bytes. This gives the same result on little-endian
systems, but not on big-endian.
- lldb_private::formatters::WCharSummaryProvider always assumes wchar_t
is UTF16, even though it could also be UTF8 or UTF32. This is mostly
not an issue on little-endian systems, but immediately fails on BE.
Fixed by checking the size of wchar_t like WCharStringSummaryProvider
already does.
- ClangASTContext::GetChildCompilerTypeAtIndex uses uint32_t to access
the virtual base offset stored in the vtable, even though the size
of this field matches the target pointer size according to the C++
ABI. Again, this is mostly not visible on LE, but fails on BE.
- Process::ReadStringFromMemory uses strncmp to search for a terminator
consisting of multiple zero bytes. This doesn't work since strncmp
will stop already at the first zero byte. Use memcmp instead.
Differential Revision: http://reviews.llvm.org/D18983
llvm-svn: 266313
Old-style syntax: `except Exception, e:`
New-style syntax: `except Exception as e:`
These two statements are identical, except that the former has
been deprecated for may versions, and was removed in Python 3.
This converts everything to use the new syntax (which also works
in Python 2). I had to convert unittest2 as well. What we really
need to do is just delete unittest2, and use unittest instead since
it is a standard module that ships with every Python distribution.
But this is the path of least resistance for now, although at
some point we will really need to do it.
llvm-svn: 251968
Even though these are under examples/, they actually get loaded
when LLDB starts up during initialization of ScriptInterpreterPython.
There's obviously some kind of layering issue here (and comments
in the code even point to that as well), but for now just make them
py3 compatible.
llvm-svn: 250710
lldb::addr_t SBFrame::GetCFA();
This gets the CFA (call frame address) of the frame so it allows us to take an address that is on the stack and figure out which thread it comes from.
Also modified the heap.py module to be able to find out which variable in a frame's stack frame contains an address. This way when ptr_refs finds a match on the stack, it get then report which variable contains the pointer.
llvm-svn: 238393
expr_options = lldb.SBExpressionOptions()
expr_options.SetPrefix('''
struct Foo {
int a;
int b;
int c;
}
'''
expr_result = frame.EvaluateExpression ("Foo foo = { 1, 2, 3}; foo", expr_options)
This fixed a current issue with ptr_refs, cstr_refs and malloc_info so that they can work. If expressions define their own types and then return expression results that use those types, those types get copied into the target's AST context so they persist and the expression results can be still printed and used in future expressions. Code was added to the expression parser to copy the context in which types are defined if they are used as the expression results. So in the case of types defined by expressions, they get defined in a lldb_expr function and that function and _all_ of its statements get copied. Many types of statements are not supported in this copy (array subscript, lambdas, etc) so this causes expressions to fail as they can't copy the result types. To work around this issue I have added code that allows expressions to specify an expression specific prefix. Then when you evaluate the expression you can pass the "expr_options" and have types that can be correctly copied out into the target. I added this as a way to work around an issue, but I also think it is nice to be allowed to specify an expression prefix that can be reused by many expressions, so this feature is very useful.
<rdar://problem/21130675>
llvm-svn: 238365
version of this script. We picked up a bug at some point in March
where scripts that fail to call SBDebugger::Destroy() will crash
in the Debugger C++ dtor. I want to track the change down which
introduced the change - but this script should be calling
SBDebugger::Destroy() in the first place, so do that.
llvm-svn: 233779
The previous implementation only read out the first element of the
underlying storage array. Because of it only the first 32 (on x86) or
the first 64 (on x86_64) element was displayed.
Differential revision: http://reviews.llvm.org/D8585
llvm-svn: 233179
Summary:
GCC does not emit some DWARF required for the simplified formatter
to work. A workaround for it has been incorporated in the formatter.
The corresponding test TestDataFormatterStdMap has also been enabled
for GCC.
Test Plan: dotest.py -C <clang|gcc> -p TestDataFormatterStdMap
Reviewers: clayborg, vharron, granata.enrico
Subscribers: lldb-commits
Differential Revision: http://reviews.llvm.org/D8424
llvm-svn: 232678
Summary:
The existing formatter in C++ has been removed as it was not being used.
The associated test TestDataFormatterStdVBool.py has been enabled for
both Clang and GCC on Linux.
Test Plan: dotest.py -p TestDataFormatterStdVBool
Reviewers: vharron, clayborg
Reviewed By: clayborg
Subscribers: lldb-commits
Differential Revision: http://reviews.llvm.org/D8390
llvm-svn: 232548
- tree items can define any number of key/value pairs
- creating a tree you specify which columns you want to display and it will pick out the right key/value pairs from the new tree item dictionaries
- added new "tk-target" command to explore the target's images, sections, symbols, compile units and line tables.
llvm-svn: 219219
If you "command script import" this file, then you will have two new commands:
(lldb) tk-variables
(lldb) tk-process
Not sure how this will work on all other systems, but on MacOSX, you will get a window with a tree view that allows you to inspect your local variables by expanding variables to see the child values.
The "tk-process" allows you to inspect the currently selected process by expanding the process to see the threads, the threads to see the frames, and the frames to see the variables. Very handy if you want to view variables for all frames simultaneously.
llvm-svn: 218279
SBTarget::AddModule(const char *path,
const char *triple,
const char *uuid_cstr,
const char *symfile);
If "symfile" was filled in, it would cause us to not correctly add the module. Same goes for:
SBTarget::AddModule(SBModuleSpec ...)
Where you filled in the symfile.
<rdar://problem/16529799>
llvm-svn: 205750
- If there is only 1 frame ptr_refs now works (fixed issue with stack detection)
- Fixed test for result now that it isn't a pointer anymore
llvm-svn: 198712
This commit adds an example python file that can be used with 'target-definition-file' setting for Linux gdbserver.
This file has an extra key 'breakpoint-pc-offset' that LLDB uses to determine how much to change the PC
after hitting the breakpoint.
llvm-svn: 192962
- Made the dynamic register context for the GDB remote plug-in inherit from the generic DynamicRegisterInfo to avoid code duplication
- Finished up the target definition python setting stuff.
- Added a new "slice" key/value pair that can specify that a register is part of another register:
{ 'name':'eax', 'set':0, 'bitsize':32, 'encoding':eEncodingUint, 'format':eFormatHex, 'slice': 'rax[31:0]' },
- Added a new "composite" key/value pair that can specify that a register is made up of two or more registers:
{ 'name':'d0', 'set':0, 'bitsize':64 , 'encoding':eEncodingIEEE754, 'format':eFormatFloat, 'composite': ['s1', 's0'] },
- Added a new "invalidate-regs" key/value pair for when a register is modified, it can invalidate other registers:
{ 'name':'cpsr', 'set':0, 'bitsize':32 , 'encoding':eEncodingUint, 'format':eFormatHex, 'invalidate-regs': ['r8', 'r9', 'r10', 'r11', 'r12', 'r13', 'r14', 'r15']},
This now completes the feature that allows a GDB remote target to completely describe itself.
llvm-svn: 192858
When debugging with the GDB remote in LLDB, LLDB uses special packets to discover the
registers on the remote server. When those packets aren't supported, LLDB doesn't
know what the registers look like. This checkin implements a setting that can be used
to specify a python file that contains the registers definitions. The setting is:
(lldb) settings set plugin.process.gdb-remote.target-definition-file /path/to/module.py
Inside module there should be a function:
def get_dynamic_setting(target, setting_name):
This dynamic setting function is handed the "target" which is a SBTarget, and the
"setting_name", which is the name of the dynamic setting to retrieve. For the GDB
remote target definition the setting name is 'gdb-server-target-definition'. The
return value is a dictionary that follows the same format as the OperatingSystem
plugins follow. I have checked in an example file that implements the x86_64 GDB
register set for people to see:
examples/python/x86_64_target_definition.py
This allows LLDB to debug to any archticture that is support and allows users to
define the registers contexts when the discovery packets (qRegisterInfo, qHostInfo)
are not supported by the remote GDB server.
A few benefits of doing this in Python:
1 - The dynamic register context was already supported in the OperatingSystem plug-in
2 - Register contexts can use all of the LLDB enumerations and definitions for things
like lldb::Format, lldb::Encoding, generic register numbers, invalid registers
numbers, etc.
3 - The code that generates the register context can use the program to calculate the
register context contents (like offsets, register numbers, and more)
4 - True dynamic detection could be used where variables and types could be read from
the target program itself in order to determine which registers are available since
the target is passed into the python function.
This is designed to be used instead of XML since it is more dynamic and code flow and
functions can be used to make the dictionary.
llvm-svn: 192646
Added "mach_o.py" which is a mach-o parser that can dump mach-o file contents and also extract sections. It uses the "file_extract" module and the "dict_utils" module.
llvm-svn: 189959
print five words of memory at the beginning of the stack frame so it's
easier to track where an incorrect saved-fp or saved-pc may have come from.
llvm-svn: 185903
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
Change the simple-minded stack walk to not depend on lldb to unwind
the first frame.
Collect a list of Modules and Addresses seen while backtracing (with
both methods), display the image list output for all of those modules,
plus disassemble and image show-unwind any additional frames that
the simple backtrace was able to unwind through instead of just the
lldb unwind algorithm frames.
Remove checks for older lldb's that didn't support -a for disassemble
or specifying the assembler syntax on x86 targets.
llvm-svn: 184280
- specify the architecture
- specify the platform
- specify if only external symbols should be dumped
- specify if types in the function signatures should be canonicalized
llvm-svn: 183961
Improved the makefile "clean" to include deleting all ".d.[0-9]+" files.
Added options to the "lldb/examples/lookup" example and made it build using the LLDB_BUILD_DIR. If this is not set, it will default to "/Applications/Xcode.app/Contents/SharedFrameworks" on Darwin.
Added options to the "lldb/examples/function" example and made it build using the LLDB_BUILD_DIR.
llvm-svn: 183949
This example shows someone could iterate over all functions and do something intelligent with them, like create function signatures. Then two different builds could be compared to verify the API hasn't changed.
llvm-svn: 183923
This module uses Python's sys.settrace() mechanism so setup a hook that can log every significant operation
This is a first step in providing a good debugging experience of Python embedded in LLDB
This module comprises an OO infrastructure that wraps Python's tracing and inspecting mechanisms, plus a very simple logging tracer
Output from this tracer looks like:
call print_keyword_args from <module> @ 243 args are kwargs are {'first_name': 'John', 'last_name': 'Doe'}
running print_keyword_args @ 228 locals are {'kwargs': {'first_name': 'John', 'last_name': 'Doe'}}
running print_keyword_args @ 229 locals are {'key': 'first_name', 'value': 'John', 'kwargs': {'first_name': 'John', 'last_name': 'Doe'}}
first_name = John
running print_keyword_args @ 228 locals are {'key': 'first_name', 'value': 'John', 'kwargs': {'first_name': 'John', 'last_name': 'Doe'}}
running print_keyword_args @ 229 locals are {'key': 'last_name', 'value': 'Doe', 'kwargs': {'first_name': 'John', 'last_name': 'Doe'}}
last_name = Doe
running print_keyword_args @ 228 locals are {'key': 'last_name', 'value': 'Doe', 'kwargs': {'first_name': 'John', 'last_name': 'Doe'}}
return from print_keyword_args value is None locals are {'key': 'last_name', 'value': 'Doe', 'kwargs': {'first_name': 'John', 'last_name': 'Doe'}}
llvm-svn: 181343
finish-swig-Python-LLDB.sh to create a new lldb.diagnose subdirectory
in the LLDB framework; the first diagnostic command in this directory
is diagnose-unwind. There may be others added in the future.
Users can load these diagnostic tools into their session with
"script import lldb.diagnose".
llvm-svn: 180768
lldb-179 version numberings and the new lldb-300 version numberings.
Remove the pretense that someone might run this from the command
line; this is only used from within a live lldb debug session. Fix
the loading so it can be loaded via "script import lldb.macosx" or
the script can be loaded individually like "command script import
unwind_diagnose.py"
llvm-svn: 180085
unwind instructions for a function/symbol which contains that
address.
Update the unwind_diagnose.py script to use this instead of doing
image show-unwind by name to avoid cases where there are multiple
name definitions.
llvm-svn: 180079
Jim Ingham