69 Commits

Author SHA1 Message Date
Jason Molenda
c73a3f16f8 [lldb] [mostly NFC] Large WP foundation: WatchpointResources (#68845)
This patch is rearranging code a bit to add WatchpointResources to
Process. A WatchpointResource is meant to represent a hardware
watchpoint register in the inferior process. It has an address, a size,
a type, and a list of Watchpoints that are using this
WatchpointResource.

This current patch doesn't add any of the features of
WatchpointResources that make them interesting -- a user asking to watch
a 24 byte object could watch this with three 8 byte WatchpointResources.
Or a Watchpoint on 1 byte at 0x1002 and a second watchpoint on 1 byte at
0x1003, these must both be served by a single WatchpointResource on that
doubleword at 0x1000 on a 64-bit target, if two hardware watchpoint
registers were used to track these separately, one of them may not be
hit. Or if you have one Watchpoint on a variable with a condition set,
and another Watchpoint on that same variable with a command defined or
different condition, or ignorecount, both of those Watchpoints need to
evaluate their criteria/commands when their WatchpointResource has been
hit.

There's a bit of code movement to rearrange things in the direction I'll
need for implementing this feature, so I want to start with reviewing &
landing this mostly NFC patch and we can focus on the algorithmic
choices about how WatchpointResources are shared and handled as they're
triggeed, separately.

This patch also stops printing "Watchpoint <n> hit: old value: <x>, new
vlaue: <y>" for Read watchpoints. I could make an argument for print
"Watchpoint <n> hit: current value <x>" but the current output doesn't
make any sense, and the user can print the value if they are
particularly interested. Read watchpoints are used primarily to
understand what code is reading a variable.

This patch adds more fallbacks for how to print the objects being
watched if we have types, instead of assuming they are all integral
values, so a struct will print its elements. As large watchpoints are
added, we'll be doing a lot more of those.

To track the WatchpointSP in the WatchpointResources, I changed the
internal API which took a WatchpointSP and devolved it to a Watchpoint*,
which meant touching several different Process files. I removed the
watchpoint code in ProcessKDP which only reported that watchpoints
aren't supported, the base class does that already.

I haven't yet changed how we receive a watchpoint to identify the
WatchpointResource responsible for the trigger, and identify all
Watchpoints that are using this Resource to evaluate their conditions
etc. This is the same work that a BreakpointSite needs to do when it has
been tiggered, where multiple Breakpoints may be at the same address.

There is not yet any printing of the Resources that a Watchpoint is
implemented in terms of ("watchpoint list", or
SBWatchpoint::GetDescription).

"watchpoint set var" and "watchpoint set expression" take a size
argument which was previously 1, 2, 4, or 8 (an enum). I've changed this
to an unsigned int. Most hardware implementations can only watch 1, 2,
4, 8 byte ranges, but with Resources we'll allow a user to ask for
different sized watchpoints and set them in hardware-expressble terms
soon.

I've annotated areas where I know there is work still needed with
LWP_TODO that I'll be working on once this is landed.

I've tested this on aarch64 macOS, aarch64 Linux, and Intel macOS.

https://discourse.llvm.org/t/rfc-large-watchpoint-support-in-lldb/72116
(cherry picked from commit fc6b72523f3d73b921690a713e97a433c96066c6)
2023-11-30 14:59:10 -08:00
David Spickett
b0af8a1ede Revert "[lldb] [mostly NFC] Large WP foundation: WatchpointResources (#68845)"
...and follow ups.

As it has caused test failures on Linux Arm and AArch64:
https://lab.llvm.org/buildbot/#/builders/96/builds/49126
https://lab.llvm.org/buildbot/#/builders/17/builds/45824

```
  lldb-shell :: Subprocess/clone-follow-child-wp.test
  lldb-shell :: Subprocess/fork-follow-child-wp.test
  lldb-shell :: Subprocess/vfork-follow-child-wp.test
```

This reverts commit a6c62bf1a4717accc852463b664cd1012237d334,
commit a0a1ff3ab40e347589b4e27d8fd350c600526735 and commit
fc6b72523f3d73b921690a713e97a433c96066c6.
2023-11-28 09:39:37 +00:00
Jason Molenda
fc6b72523f
[lldb] [mostly NFC] Large WP foundation: WatchpointResources (#68845)
This patch is rearranging code a bit to add WatchpointResources to
Process. A WatchpointResource is meant to represent a hardware
watchpoint register in the inferior process. It has an address, a size,
a type, and a list of Watchpoints that are using this
WatchpointResource.

This current patch doesn't add any of the features of
WatchpointResources that make them interesting -- a user asking to watch
a 24 byte object could watch this with three 8 byte WatchpointResources.
Or a Watchpoint on 1 byte at 0x1002 and a second watchpoint on 1 byte at
0x1003, these must both be served by a single WatchpointResource on that
doubleword at 0x1000 on a 64-bit target, if two hardware watchpoint
registers were used to track these separately, one of them may not be
hit. Or if you have one Watchpoint on a variable with a condition set,
and another Watchpoint on that same variable with a command defined or
different condition, or ignorecount, both of those Watchpoints need to
evaluate their criteria/commands when their WatchpointResource has been
hit.

There's a bit of code movement to rearrange things in the direction I'll
need for implementing this feature, so I want to start with reviewing &
landing this mostly NFC patch and we can focus on the algorithmic
choices about how WatchpointResources are shared and handled as they're
triggeed, separately.

This patch also stops printing "Watchpoint <n> hit: old value: <x>, new
vlaue: <y>" for Read watchpoints. I could make an argument for print
"Watchpoint <n> hit: current value <x>" but the current output doesn't
make any sense, and the user can print the value if they are
particularly interested. Read watchpoints are used primarily to
understand what code is reading a variable.

This patch adds more fallbacks for how to print the objects being
watched if we have types, instead of assuming they are all integral
values, so a struct will print its elements. As large watchpoints are
added, we'll be doing a lot more of those.

To track the WatchpointSP in the WatchpointResources, I changed the
internal API which took a WatchpointSP and devolved it to a Watchpoint*,
which meant touching several different Process files. I removed the
watchpoint code in ProcessKDP which only reported that watchpoints
aren't supported, the base class does that already.

I haven't yet changed how we receive a watchpoint to identify the
WatchpointResource responsible for the trigger, and identify all
Watchpoints that are using this Resource to evaluate their conditions
etc. This is the same work that a BreakpointSite needs to do when it has
been tiggered, where multiple Breakpoints may be at the same address.

There is not yet any printing of the Resources that a Watchpoint is
implemented in terms of ("watchpoint list", or
SBWatchpoint::GetDescription).

"watchpoint set var" and "watchpoint set expression" take a size
argument which was previously 1, 2, 4, or 8 (an enum). I've changed this
to an unsigned int. Most hardware implementations can only watch 1, 2,
4, 8 byte ranges, but with Resources we'll allow a user to ask for
different sized watchpoints and set them in hardware-expressble terms
soon.

I've annotated areas where I know there is work still needed with
LWP_TODO that I'll be working on once this is landed.

I've tested this on aarch64 macOS, aarch64 Linux, and Intel macOS.

https://discourse.llvm.org/t/rfc-large-watchpoint-support-in-lldb/72116
2023-11-27 13:28:59 -08:00
Pavel Labath
c34698a811 [lldb] Rename Logging.h to LLDBLog.h and clean up includes
Most of our code was including Log.h even though that is not where the
"lldb" log channel is defined (Log.h defines the generic logging
infrastructure). This worked because Log.h included Logging.h, even
though it should.

After the recent refactor, it became impossible the two files include
each other in this direction (the opposite inclusion is needed), so this
patch removes the workaround that was put in place and cleans up all
files to include the right thing. It also renames the file to LLDBLog to
better reflect its purpose.
2022-02-03 14:47:01 +01:00
Pavel Labath
a007a6d844 [lldb] Convert "LLDB" log channel to the new API 2022-02-02 14:13:08 +01:00
Dave Lee
9d3b9e5799 [lldb] Rename {stop,run}_vote to report_{stop,run}_vote
Rename `stop_vote` and `run_vote` to `report_stop_vote` and `report_run_vote`
respectively. These variables are limited to logic involving (event) reporting only.
This naming is intended to make their context more clear.

Differential Revision: https://reviews.llvm.org/D96917
2021-02-19 13:04:53 -08:00
Jim Ingham
1893065d7b Allow the ThreadPlanStackMap to hold the thread plans for threads
that were not reported by the OS plugin.  To facilitate this, move
adding/updating the ThreadPlans for a Thread to the ThreadPlanStackMap.
Also move dumping thread plans there as well.

Added some tests for "thread plan list" and "thread plan discard" since
I didn't seem to have written any originally.

Differential Revision: https://reviews.llvm.org/D76814
2020-04-03 14:56:28 -07:00
Jim Ingham
e4598dc04a Make ThreadPlans use TID and Process, rather than Thread *.
Differential Revision: https://reviews.llvm.org/D75711
2020-04-03 14:56:28 -07:00
Ted Woodward
6fd818c5a9 Don't fail step out if remote server doesn't implement qMemoryRegionInfo
Summary:
The return address validation in D71372 will fail if the memory permissions can't be determined. Many embedded stubs either don't implement the qMemoryRegionInfo packet, or don't have memory permissions at all.

Remove the return from the if clause that calls GetLoadAddressPermissions, so this call failing doesn't cause the step out to abort. Instead, assume that the memory permission check doesn't apply to this type of target.

Reviewers: labath, jingham, clayborg, mossberg

Reviewed By: labath, jingham

Subscribers: lldb-commits

Tags: #lldb

Differential Revision: https://reviews.llvm.org/D72513
2020-02-10 13:40:44 -06:00
Ted Woodward
04488c485a Don't fail step out if remote server doesn't implement qMemoryRegionInfo
Summary:
The return address validation in D71372 will fail if the memory permissions can't be determined. Many embedded stubs either don't implement the qMemoryRegionInfo packet, or don't have memory permissions at all.

Remove the return from the if clause that calls GetLoadAddressPermissions, so this call failing doesn't cause the step out to abort. Instead, assume that the memory permission check doesn't apply to this type of target.

Reviewers: labath, jingham, clayborg, mossberg

Reviewed By: labath

Subscribers: lldb-commits

Tags: #lldb

Differential Revision: https://reviews.llvm.org/D72513
2020-01-28 13:36:06 -06:00
Raphael Isemann
808142876c [lldb][NFC] Fix all formatting errors in .cpp file headers
Summary:
A *.cpp file header in LLDB (and in LLDB) should like this:
```
//===-- TestUtilities.cpp -------------------------------------------------===//
```
However in LLDB most of our source files have arbitrary changes to this format and
these changes are spreading through LLDB as folks usually just use the existing
source files as templates for their new files (most notably the unnecessary
editor language indicator `-*- C++ -*-` is spreading and in every review
someone is pointing out that this is wrong, resulting in people pointing out that this
is done in the same way in other files).

This patch removes most of these inconsistencies including the editor language indicators,
all the different missing/additional '-' characters, files that center the file name, missing
trailing `===//` (mostly caused by clang-format breaking the line).

Reviewers: aprantl, espindola, jfb, shafik, JDevlieghere

Reviewed By: JDevlieghere

Subscribers: dexonsmith, wuzish, emaste, sdardis, nemanjai, kbarton, MaskRay, atanasyan, arphaman, jfb, abidh, jsji, JDevlieghere, usaxena95, lldb-commits

Tags: #lldb

Differential Revision: https://reviews.llvm.org/D73258
2020-01-24 08:52:55 +01:00
Jim Ingham
2a42a5a2f4 In 'thread step-out' command, only insert a breakpoint in executable memory.
Previously, if the current function had a nonstandard stack layout/ABI, and had a valid
data pointer in the location where the return address is usually located, data corruption
would occur when the breakpoint was written. This could lead to an incorrectly reported
crash or silent corruption of the program's state. Now, if the above check fails, the command safely aborts.

Differential Revision: https://reviews.llvm.org/D71372
2019-12-20 11:02:24 -08:00
Jonas Devlieghere
63e5fb76ec [Logging] Replace Log::Printf with LLDB_LOG macro (NFC)
This patch replaces explicit calls to log::Printf with the new LLDB_LOGF
macro. The macro is similar to LLDB_LOG but supports printf-style format
strings, instead of formatv-style format strings.

So instead of writing:

  if (log)
    log->Printf("%s\n", str);

You'd write:

  LLDB_LOG(log, "%s\n", str);

This change was done mechanically with the command below. I replaced the
spurious if-checks with vim, since I know how to do multi-line
replacements with it.

  find . -type f -name '*.cpp' -exec \
  sed -i '' -E 's/log->Printf\(/LLDB_LOGF\(log, /g' "{}" +

Differential revision: https://reviews.llvm.org/D65128

llvm-svn: 366936
2019-07-24 17:56:10 +00:00
Greg Clayton
8a7779209d Include inlined functions when figuring out a contiguous address range
Checking this in for Antonio Afonso:

This diff changes the function LineEntry::GetSameLineContiguousAddressRange so that it also includes function calls that were inlined at the same line of code.

My motivation is to decrease the step over time of lines that heavly rely on inlined functions. I have multiple examples in the code base I work that makes a step over stop 20 or mote times internally. This can easly had up to step overs that take >500ms which I was able to lower to 25ms with this new strategy.

The reason the current code is not extending the address range beyond an inlined function is because when we resolve the symbol at the next address of the line entry we will get the entry line corresponding to where the original code for the inline function lives, making us barely extend the range. This then will end up on a step over having to stop multiple times everytime there's an inlined function.

To check if the range is an inlined function at that line I also get the block associated with the next address and check if there is a parent block with a call site at the line we're trying to extend.

To check this I created a new function in Block called GetContainingInlinedBlockWithCallSite that does exactly that. I also added a new function to Declaration for convinence of checking file/line named CompareFileAndLine.

To avoid potential issues when extending an address range I added an Extend function that extends the range by the AddressRange given as an argument. This function returns true to indicate sucess when the rage was agumented, false otherwise (e.g.: the ranges are not connected). The reason I do is to make sure that we're not just blindly extending complete_line_range by whatever GetByteSize() we got. If for some reason the ranges are not connected or overlap, or even 0, this could be an issue.

I also added a unit tests for this change and include the instructions on the test itself on how to generate the yaml file I use for testing.


Differential Revision: https://reviews.llvm.org/D61292

llvm-svn: 360071
2019-05-06 20:01:21 +00:00
Jonas Devlieghere
8b3af63b89 [NFC] Remove ASCII lines from comments
A lot of comments in LLDB are surrounded by an ASCII line to delimit the
begging and end of the comment.

Its use is not really consistent across the code base, sometimes the
lines are longer, sometimes they are shorter and sometimes they are
omitted. Furthermore, it looks kind of weird with the 80 column limit,
where the comment actually extends past the line, but not by much.
Furthermore, when /// is used for Doxygen comments, it looks
particularly odd. And when // is used, it incorrectly gives the
impression that it's actually a Doxygen comment.

I assume these lines were added to improve distinguishing between
comments and code. However, given that todays editors and IDEs do a
great job at highlighting comments, I think it's worth to drop this for
the sake of consistency. The alternative is fixing all the
inconsistencies, which would create a lot more churn.

Differential revision: https://reviews.llvm.org/D60508

llvm-svn: 358135
2019-04-10 20:48:55 +00:00
Jonas Devlieghere
796ac80b86 Use std::make_shared in LLDB (NFC)
Unlike std::make_unique, which is only available since C++14,
std::make_shared is available since C++11. Not only is std::make_shared
a lot more readable compared to ::reset(new), it also performs a single
heap allocation for the object and control block.

Differential revision: https://reviews.llvm.org/D57990

llvm-svn: 353764
2019-02-11 23:13:08 +00:00
Chandler Carruth
2946cd7010 Update the file headers across all of the LLVM projects in the monorepo
to reflect the new license.

We understand that people may be surprised that we're moving the header
entirely to discuss the new license. We checked this carefully with the
Foundation's lawyer and we believe this is the correct approach.

Essentially, all code in the project is now made available by the LLVM
project under our new license, so you will see that the license headers
include that license only. Some of our contributors have contributed
code under our old license, and accordingly, we have retained a copy of
our old license notice in the top-level files in each project and
repository.

llvm-svn: 351636
2019-01-19 08:50:56 +00:00
Jonas Devlieghere
e103ae92ef Add setting to require hardware breakpoints.
When debugging read-only memory we cannot use software breakpoint. We
already have support for hardware breakpoints and users can specify them
with `-H`. However, there's no option to force LLDB to use hardware
breakpoints internally, for example while stepping.

This patch adds a setting target.require-hardware-breakpoint that forces
LLDB to always use hardware breakpoints. Because hardware breakpoints
are a limited resource and can fail to resolve, this patch also extends
error handling in thread plans, where breakpoints are used for stepping.

Differential revision: https://reviews.llvm.org/D54221

llvm-svn: 346920
2018-11-15 01:18:15 +00:00
Jonas Devlieghere
ceff6644bb Remove header grouping comments.
This patch removes the comments grouping header includes. They were
added after running IWYU over the LLDB codebase. However they add little
value, are often outdates and burdensome to maintain.

llvm-svn: 346626
2018-11-11 23:17:06 +00:00
Vedant Kumar
4b36f7911d Add support for artificial tail call frames
This patch teaches lldb to detect when there are missing frames in a
backtrace due to a sequence of tail calls, and to fill in the backtrace
with artificial tail call frames when this happens. This is only done
when the execution history can be determined from the call graph and
from the return PC addresses of calls on the stack. Ambiguous sequences
of tail calls (e.g anything involving tail calls and recursion) are
detected and ignored.

Depends on D49887.

Differential Revision: https://reviews.llvm.org/D50478

llvm-svn: 343900
2018-10-05 23:23:15 +00:00
Adrian Prantl
05097246f3 Reflow paragraphs in comments.
This is intended as a clean up after the big clang-format commit
(r280751), which unfortunately resulted in many of the comment
paragraphs in LLDB being very hard to read.

FYI, the script I used was:

import textwrap
import commands
import os
import sys
import re
tmp = "%s.tmp"%sys.argv[1]
out = open(tmp, "w+")
with open(sys.argv[1], "r") as f:
  header = ""
  text = ""
  comment = re.compile(r'^( *//) ([^ ].*)$')
  special = re.compile(r'^((([A-Z]+[: ])|([0-9]+ )).*)|(.*;)$')
  for line in f:
      match = comment.match(line)
      if match and not special.match(match.group(2)):
          # skip intentionally short comments.
          if not text and len(match.group(2)) < 40:
              out.write(line)
              continue

          if text:
              text += " " + match.group(2)
          else:
              header = match.group(1)
              text = match.group(2)

          continue

      if text:
          filled = textwrap.wrap(text, width=(78-len(header)),
                                 break_long_words=False)
          for l in filled:
              out.write(header+" "+l+'\n')
              text = ""

      out.write(line)

os.rename(tmp, sys.argv[1])

Differential Revision: https://reviews.llvm.org/D46144

llvm-svn: 331197
2018-04-30 16:49:04 +00:00
Zachary Turner
6f9e690199 Move Log from Core -> Utility.
All references to Host and Core have been removed, so this
class can now safely be lowered into Utility.

Differential Revision: https://reviews.llvm.org/D30559

llvm-svn: 296909
2017-03-03 20:56:28 +00:00
Kate Stone
b9c1b51e45 *** This commit represents a complete reformatting of the LLDB source code
*** 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
2016-09-06 20:57:50 +00:00
Zachary Turner
6c978aa9da Remove unused variables.
Patch by Taras Tsugrii

llvm-svn: 280283
2016-08-31 20:03:14 +00:00
Jim Ingham
b612ac3775 Implementation "step out" plans shouldn't gather the return value.
When, for instance, "step-in" steps into a function that it doesn't want
to stop in (e.g. has no debug info) it will push a step-out plan to implement
the step out so it can then continue stepping.  These step out's don't use
the result of the function stepped out of, so they shouldn't spend the time 
to compute it.

llvm-svn: 279540
2016-08-23 17:55:21 +00:00
Jason Molenda
fd4cea53d5 Re-apply r257117 (reverted in r257138 temporarily),
with the one change that ThreadPlanStepOut::ThreadPlanStepOut
will now only advance the return address breakpoint to
the end of a source line, if we have source line debug information.
It will not advance to the end of a Symbol if we lack source line
information.  This, or the recognition of the LEAVE instruction
in r257209, would have fixed the regression that Siva was seeing.
Both were good changes, so I've made both.

Original commit message:

Performance improvement: Change lldb so that it puts a breakpoint
on the first branch instruction after a function return (or the end
of a source line), instead of a breakpoint on the return address,
to skip an extra stop & start of the inferior process.

I changed Process::AdvanceAddressToNextBranchInstruction to not
take an optional InstructionList argument - no callers are providing
a cached InstructionList today, and if this function was going to
do that, the right thing to do would be to fill out / use a
DisassemblerSP which is a disassembler with the InstructionList for
this address range.


http://reviews.llvm.org/D15708
<rdar://problem/23309838> 

llvm-svn: 257210
2016-01-08 21:40:11 +00:00
Jason Molenda
7cb9d98cf9 Revert r257117 "Performance improvement: Change lldb so that it
puts a breakpoint" it is causing a regression in the TestStepNoDebug
test case on ubuntu 14.04 with gcc 4.9.2.  Thanks for the email
Siva.  I'll recommit when I've figured out the regression.

llvm-svn: 257138
2016-01-08 02:26:03 +00:00
Jason Molenda
b4a8b4c401 Performance improvement: Change lldb so that it puts a breakpoint
on the first branch instruction after a function return (or the end
of a source line), instead of a breakpoint on the return address,
to skip an extra stop & start of the inferior process.

I changed Process::AdvanceAddressToNextBranchInstruction to not
take an optional InstructionList argument - no callers are providing
a cached InstructionList today, and if this function was going to
do that, the right thing to do would be to fill out / use a
DisassemblerSP which is a disassembler with the InstructionList for
this address range.


http://reviews.llvm.org/D15708
<rdar://problem/23309838> 

llvm-svn: 257117
2016-01-08 00:06:03 +00:00
Eugene Zelenko
e65b2cf297 Fix Clang-tidy modernize-use-nullptr and readability-simplify-boolean-expr warnings in some files in source/Target/.
Simplify smart pointers checks in conditions. Other minor fixes.

llvm-svn: 255598
2015-12-15 01:33:19 +00:00
Jason Molenda
afdf6cbf3c Add a space char so step logging doesn't print things like
"Stepping out from a.out`bar at a.c:3returning to frame"

llvm-svn: 254698
2015-12-04 02:52:49 +00:00
Bruce Mitchener
3ad353f3f4 Rename clang_type -> compiler_type for variables.
Reviewers: clayborg

Subscribers: lldb-commits

Differential Revision: http://reviews.llvm.org/D13102

llvm-svn: 248461
2015-09-24 03:54:50 +00:00
Greg Clayton
99558cc424 Final bit of type system cleanup that abstracts declaration contexts into lldb_private::CompilerDeclContext and renames ClangType to CompilerType in many accessors and functions.
Create a new "lldb_private::CompilerDeclContext" class that will replace all direct uses of "clang::DeclContext" when used in compiler agnostic code, yet still allow for conversion to clang::DeclContext subclasses by clang specific code. This completes the abstraction of type parsing by removing all "clang::" references from the SymbolFileDWARF. The new "lldb_private::CompilerDeclContext" class abstracts decl contexts found in compiler type systems so they can be used in internal API calls. The TypeSystem is required to support CompilerDeclContexts with new pure virtual functions that start with "DeclContext" in the member function names. Converted all code that used lldb_private::ClangNamespaceDecl over to use the new CompilerDeclContext class and removed the ClangNamespaceDecl.cpp and ClangNamespaceDecl.h files.

Removed direct use of clang APIs from SBType and now use the abstract type systems to correctly explore types.

Bulk renames for things that used to return a ClangASTType which is now CompilerType:

    "Type::GetClangFullType()" to "Type::GetFullCompilerType()"
    "Type::GetClangLayoutType()" to "Type::GetLayoutCompilerType()"
    "Type::GetClangForwardType()" to "Type::GetForwardCompilerType()"
    "Value::GetClangType()" to "Value::GetCompilerType()"
    "Value::SetClangType (const CompilerType &)" to "Value::SetCompilerType (const CompilerType &)"
    "ValueObject::GetClangType ()" to "ValueObject::GetCompilerType()"
    many more renames that are similar.

llvm-svn: 245905
2015-08-24 23:46:31 +00:00
Greg Clayton
a1e5dc86a6 ClangASTType is now CompilerType.
This is more preparation for multiple different kinds of types from different compilers (clang, Pascal, Go, RenderScript, Swift, etc).

llvm-svn: 244689
2015-08-11 22:53:00 +00:00
Jim Ingham
9b03fa0c69 Most thread plans don't handle eStopReasonInstrumentation stop reasons,
but that wasn't added to the list of reasons they don't explain.  That
would mean we keep stepping after hitting the AsanDie breakpoint rather
than stopping when the Asan event occurred.

<rdar://problem/21925479>

llvm-svn: 243035
2015-07-23 19:55:02 +00:00
Zachary Turner
3294de270e Move lldb-log.cpp to core/Logging.cpp
So that we don't have to update every single #include in the entire
codebase to #include this new header (which used to get included by
lldb-private-log.h, we automatically #include "Logging.h" from
within "Log.h".

llvm-svn: 232653
2015-03-18 18:20:42 +00:00
Zachary Turner
32abc6edac Reduce header footprint of Target.h
This continues the effort to reduce header footprint and improve
build speed by removing clang and other unnecessary headers
from Target.h.  In one case, some headers were included solely
for the purpose of declaring a nested class in Target, which was
not needed by anybody outside the class.  In this case the
definition and implementation of the nested class were isolated
in the .cpp file so the header could be removed.

llvm-svn: 231107
2015-03-03 19:23:09 +00:00
Jim Ingham
2bdbfd50d2 This checkin is the first step in making the lldb thread stepping mechanism more accessible from
the user level.  It adds the ability to invent new stepping modes implemented by python classes,
and to view the current thread plan stack and to some extent alter it.

I haven't gotten to documentation or tests yet.  But this should not cause any behavior changes
if you don't use it, so its safe to check it in now and work on it incrementally.

llvm-svn: 218642
2014-09-29 23:17:18 +00:00
Jim Ingham
4b4b2478fc This commit reworks how the thread plan's ShouldStopHere mechanism works, so that it is useful not only
for customizing "step-in" behavior (e.g. step-in doesn't step into code with no debug info), but also 
the behavior of step-in/step-out and step-over when they step out of the frame they started in.

I also added as a proof of concept of this reworking a mode for stepping where stepping out of a frame
into a frame with no debug information will continue stepping out till it arrives at a frame that does
have debug information.  This is useful when you are debugging callback based code where the callbacks
are separated from the code that initiated them by some library glue you don't care about, among other
things.

llvm-svn: 203747
2014-03-13 02:47:14 +00:00
Jason Molenda
b57e4a1bc6 Roll back the changes I made in r193907 which created a new Frame
pure virtual base class and made StackFrame a subclass of that.  As
I started to build on top of that arrangement today, I found that it
wasn't working out like I intended.  Instead I'll try sticking with
the single StackFrame class -- there's too much code duplication to
make a more complicated class hierarchy sensible I think.

llvm-svn: 193983
2013-11-04 09:33:30 +00:00
Jason Molenda
f23bf7432c Add a new base class, Frame. It is a pure virtual function which
defines a protocol that all subclasses will implement.  StackFrame
is currently the only subclass and the methods that Frame vends are
nearly identical to StackFrame's old methods.

Update all callers to use Frame*/Frame& instead of pointers to
StackFrames.

This is almost entirely a mechanical change that touches a lot of
the code base so I'm committing it alone.  No new functionality is
added with this patch, no new subclasses of Frame exist yet.

I'll probably need to tweak some of the separation, possibly moving
some of StackFrame's methods up in to Frame, but this is a good
starting point.

<rdar://problem/15314068>

llvm-svn: 193907
2013-11-02 02:23:02 +00:00
Greg Clayton
eb023e75dc <rdar://problem/13635174>
Added a way to set hardware breakpoints from the "breakpoint set" command with the new "--hardware" option. Hardware breakpoints are not a request, they currently are a requirement. So when breakpoints are specified as hardware breakpoints, they might fail to be set when they are able to be resolved and should be used sparingly. This is currently hooked up for GDB remote debugging. 

Linux and FreeBSD should quickly enable this feature if possible, or return an error for any breakpoints that are hardware breakpoint sites in the "virtual Error Process::EnableBreakpointSite (BreakpointSite *bp_site);" function.

llvm-svn: 192491
2013-10-11 19:48:25 +00:00
Greg Clayton
57ee306789 Huge change to clean up types.
A long time ago we start with clang types that were created by the symbol files and there were many functions in lldb_private::ClangASTContext that helped. Later we create ClangASTType which contains a clang::ASTContext and an opauque QualType, but we didn't switch over to fully using it. There were a lot of places where we would pass around a raw clang_type_t and also pass along a clang::ASTContext separately. This left room for error.

This checkin change all type code over to use ClangASTType everywhere and I cleaned up the interfaces quite a bit. Any code that was in ClangASTContext that was type related, was moved over into ClangASTType. All code that used these types was switched over to use all of the new goodness.

llvm-svn: 186130
2013-07-11 22:46:58 +00:00
Jim Ingham
60c4118c88 If ThreadPlanCallFunction hasn't set its notion of the "real stop info" yet, just return the current PrivateStopInfo.
Also renamed a few more places where we were using StopReason in functions that were returning StopInfo's.

<rdar://problem/14042692>

llvm-svn: 183177
2013-06-04 01:40:51 +00:00
Jim Ingham
221d51cf84 Figure out the reply to "PlanExplainsStop" once when we stop and then use the cached
value.  This fixes problems, for instance, with the StepRange plans, where they know that
they explained the stop because they were at their "run to here" breakpoint, then deleted
that breakpoint, so when they got asked again, doh!  I had done this for a couple of plans
in an ad hoc fashion, this just formalizes it.

Also add a "ResumeRequested" in Process so that the code in the completion handlers can
tell the ShouldStop logic they want to resume rather than just directly resuming.  That allows 
us to handle resuming in a more controlled fashion.

Also, SetPublicState can take a "restarted" flag, so that it doesn't drop the run lock when
the target was immediately restarted.
--This line, and those below , will be ignored--

M    test/lang/objc/objc-dynamic-value/TestObjCDynamicValue.py
M    include/lldb/Target/ThreadList.h
M    include/lldb/Target/ThreadPlanStepOut.h
M    include/lldb/Target/Thread.h
M    include/lldb/Target/ThreadPlanBase.h
M    include/lldb/Target/ThreadPlanStepThrough.h
M    include/lldb/Target/ThreadPlanStepInstruction.h
M    include/lldb/Target/ThreadPlanStepInRange.h
M    include/lldb/Target/ThreadPlanStepOverBreakpoint.h
M    include/lldb/Target/ThreadPlanStepUntil.h
M    include/lldb/Target/StopInfo.h
M    include/lldb/Target/Process.h
M    include/lldb/Target/ThreadPlanRunToAddress.h
M    include/lldb/Target/ThreadPlan.h
M    include/lldb/Target/ThreadPlanCallFunction.h
M    include/lldb/Target/ThreadPlanStepOverRange.h
M    source/Plugins/LanguageRuntime/ObjC/AppleObjCRuntime/AppleThreadPlanStepThroughObjCTrampoline.h
M    source/Plugins/LanguageRuntime/ObjC/AppleObjCRuntime/AppleThreadPlanStepThroughObjCTrampoline.cpp
M    source/Target/StopInfo.cpp
M    source/Target/Process.cpp
M    source/Target/ThreadPlanRunToAddress.cpp
M    source/Target/ThreadPlan.cpp
M    source/Target/ThreadPlanCallFunction.cpp
M    source/Target/ThreadPlanStepOverRange.cpp
M    source/Target/ThreadList.cpp
M    source/Target/ThreadPlanStepOut.cpp
M    source/Target/Thread.cpp
M    source/Target/ThreadPlanBase.cpp
M    source/Target/ThreadPlanStepThrough.cpp
M    source/Target/ThreadPlanStepInstruction.cpp
M    source/Target/ThreadPlanStepInRange.cpp
M    source/Target/ThreadPlanStepOverBreakpoint.cpp
M    source/Target/ThreadPlanStepUntil.cpp
M    lldb.xcodeproj/xcshareddata/xcschemes/Run Testsuite.xcscheme

llvm-svn: 181381
2013-05-08 00:35:16 +00:00
Greg Clayton
5160ce5c72 <rdar://problem/13521159>
LLDB is crashing when logging is enabled from lldb-perf-clang. This has to do with the global destructor chain as the process and its threads are being torn down.

All logging channels now make one and only one instance that is kept in a global pointer which is never freed. This guarantees that logging can correctly continue as the process tears itself down.

llvm-svn: 178191
2013-03-27 23:08:40 +00:00
Jim Ingham
0161b49cba Reworked the way Process::RunThreadPlan and the ThreadPlanCallFunction interoperate to fix problems where
hitting auto-continue signals while running a thread plan would cause us to lose control of the debug 
session.

<rdar://problem/12993641>

llvm-svn: 174793
2013-02-09 01:29:05 +00:00
Jim Ingham
2995077d8a Add "target.process.stop-on-shared-library-events" setting, and make it work.
Add the ability to give breakpoints a "kind" string, and have the StopInfoBreakpoint
print that in the brief description if set.  Also print the kind - if set - in the breakpoint
listing.
Give kinds to a bunch of the internal breakpoints.
We were deleting the Mac OS X dynamic loader breakpoint as though the id we had stored away was
a breakpoint site ID, but in fact it was a breakpoint id, so we never actually deleted it.  Fixed that.

llvm-svn: 173555
2013-01-26 02:19:28 +00:00
Andrew Kaylor
f85defaea5 Adding eStopReasonThreadExiting and fixing the handling of this state on Linux.
llvm-svn: 170800
2012-12-20 23:08:03 +00:00
Greg Clayton
90ba81150e <rdar://problem/12649160>
Added the ability to debug through your process exec'ing itself to the same architecture.

llvm-svn: 169340
2012-12-05 00:16:59 +00:00
Daniel Malea
d01b2953fa Resolve printf formatting warnings on Linux:
- use macros from inttypes.h for format strings instead of OS-specific types

Patch from Matt Kopec!

llvm-svn: 168945
2012-11-29 21:49:15 +00:00