Renamed monitor -> driver, to make clear that the implementation here
is in no way related to that of other process plugins which have also
implemented classes with similar names such as DebugMonitor.
Also created a DebugEventHandler interface, which will be used by
implementors to get notified when debugging events happen in the
inferiors.
llvm-svn: 221322
a nop). Fixes an instruction stepping problem when trying to step
over the final instructions of an epilogue.
<rdar://problem/18068877>
llvm-svn: 221241
let's let lldb try the arch default unwind every time but not destructively --
it doesn't permanently replace the main unwind method for that function from
now on.
This fix is for <rdar://problem/18683658>.
I tested it against Ryan Brown's go program test case and also a
collection of core files of tricky unwind scenarios
<rdar://problem/15664282> <rdar://problem/15835846>
<rdar://problem/15982682> <rdar://problem/16099440>
<rdar://problem/17364005> <rdar://problem/18556719>
that I've fixed over the last 6-9 months.
llvm-svn: 221238
is "invalid" -- it is past the end of the stack trace. Add a new
method IsCompletedStackWalk() so we can tell if an invalid stack
frame is from a complete backtrace or if it might be worth re-trying
the last unwind with a different method.
This fixes the unwinder problems Ryan Brown was having with go
programs. The unwinder can (under the right circumstances) still
destructively replace unwind plans permanently - I'll work on
that in a different patch.
<rdar://problem/18683658>
llvm-svn: 221229
The problem was that SBTarget::ReadMemory() was making a new section offset lldb_private::Address by doing:
size_t
SBTarget::ReadMemory (const SBAddress addr,
void *buf,
size_t size,
lldb::SBError &error)
{
...
lldb_private::Address addr_priv(addr.GetFileAddress(), NULL);
bytes_read = target_sp->ReadMemory(addr_priv, false, buf, size, err_priv);
This is wrong. If you get the file addresss from the "addr" argument and try to read memory using that, it will think the file address is a load address and it will try to resolve it accordingly. This will work fine if your executable is loaded at the same address (no slide), but it won't work if there is a slide.
The fix is to just pass along the "addr.ref()" instead of making a new addr_priv as this will pass along the lldb_private::Address that is inside the SBAddress (which is what we want), and not always change it into something that becomes a load address (if we are running), or abmigious file address (think address zero when you have 150 shared libraries that have sections that start at zero, which one would you pick). The main reason for passing a section offset address to SBTarget::ReadMemory() is so you _can_ read from the actual section + offset that is specified in the SBAddress.
llvm-svn: 221213
Objective-C runtime. We'll need to do more
(subclasses, partially-defined classes, etc.)
but this tests that at least the basics work.
llvm-svn: 221208
When processes are launched for debugging on Windows now, LLDB
will detect changes such as DLL loads and unloads, breakpoints,
thread creation and deletion, etc.
These notifications are not yet propagated to LLDB in a way that
LLDB understands what is happening with the process. This only
picks up the notifications from the OS in a way that they can be
sent to LLDB with subsequent patches.
Reviewed by: Scott Graham
Differential Revision: http://reviews.llvm.org/D6037
llvm-svn: 221207
The details are: large packets (like large memory reads (m packets) or large binary memory reads (x packet)) can get responses that come in across multiple read() calls. The while loop that was added meant that if only a partial packet came in (like only "$abc" coming for a response) GDBRemoteCommunication::CheckForPacket() was called, it would deadlock in the while loop because no more data is going to come in as this function needs to be called again with more data from another read. So the original fix will need to be corrected and resubmitted.
<rdar://problem/18853744>
llvm-svn: 221181
Summary:
Instead of using a homegrown solution to get the auxv from a process, instead
use the OS-provided sysctl to get the needed data. This allows the same code to
be used for both 32-bit and 64-bit processes on a 64-bit host.
Reviewers: emaste
Reviewed By: emaste
Subscribers: emaste, lldb-commits
Differential Revision: http://reviews.llvm.org/D6071
llvm-svn: 221063
Summary:
SIGPROF is used for profiling processes (with google-perftools for
instance), which results in the inferior receiving a SIGPROF from the
kernel every few milliseconds. Instead of stopping the debugging session
and notifying the user of this, we should just pass the signal and keep
running.
This follows the behavior we have in UnixSignals.cpp.
Test Plan: Run LLDB on linux with a binary using google-perftools, see that execution gets interrupted all the time because we receive SIGPROF. Apply the patch, everything works fine.
Subscribers: lldb-commits
Differential Revision: http://reviews.llvm.org/D5953
llvm-svn: 221011
If it has an Address object, it is assumed to be Valid.
Change SBAddress to always have an Address object and check
whether it is valid or not in those case.
This is fixing a subtle problem where we ended up with
a SBAddress with an Address of LLDB_INVALID_ADDRESS could
run through a copy constructor and turn into an SBAddress
with no Address object being backed (because it wasn't
distinguishing between invalid-Address versus no-Address.)
The cost of an Address object is not high and this will be
an easy mistake for someone else to make; I'm fixing
SBAddress so it doesn't come up again.
<rdar://problem/18069407>
llvm-svn: 221002
the runtime rather than trying to fix it up,
because now those types have ivars regardless of
whether they come from "frame variable" or from
expressions.
Patch by Enrico Granata.
llvm-svn: 220982
would fail if the class had no ivars.
- Updated use of the RealizeType API by the class
descriptors to use "for_expression" rather than
the misnamed "allow_unknownanytype."
llvm-svn: 220980
to indicate that we're doing stuff for the expression
parser.
- When for_expression is true, look through @s and find
the actual class rather than just returning id.
- Rename BuildObjCObjectType to BuildObjCObjectPointerType
since it's actually returning an object *pointer* type.
llvm-svn: 220979
Summary:
Ed Maste found some problems with the commit in D5988. Address most of these.
While here, also add floating point return handling. This doesn't handle
128-bit long double yet. Since I don't have any system that uses it, I don't
currently have plans to implement it.
Reviewers: emaste
Reviewed By: emaste
Subscribers: emaste, lldb-commits
Differential Revision: http://reviews.llvm.org/D6049
llvm-svn: 220963
better output when we don't have any symbol name.
It looked like this:
0x1097fd029 <ud2
0x1097fd02b <addb %al, (%rax)
now, like this:
0x10cdd3064: ud2
0x10cdd3066: addb %al, (%rax)
<rdar://problem/18833391>
llvm-svn: 220948
Summary:
This adds preliminary support for PowerPC/PowerPC64, for FreeBSD. There are
some issues still:
* Breakpoints don't work well on powerpc64.
* Shared libraries don't yet get loaded for a 32-bit process on powerpc64 host.
* Backtraces don't work. This is due to PowerPC ABI using a backchain pointer
in memory, instead of a dedicated frame pointer register for the backchain.
* Breakpoints on functions without debug info may not work correctly for 32-bit
powerpc.
Reviewers: emaste, tfiala, jingham, clayborg
Reviewed By: clayborg
Subscribers: emaste, lldb-commits
Differential Revision: http://reviews.llvm.org/D5988
llvm-svn: 220944
After r220894 (StringPrinter change) it is no longer emitted. Update the
test rather than considering it a bug as the new format is preferred.
llvm-svn: 220914
Zachary Turner