Commit Graph

145 Commits

Author SHA1 Message Date
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 a6682a413d Simplify Boolean expressions
This patch simplifies boolean expressions acorss LLDB. It was generated
using clang-tidy with the following command:

run-clang-tidy.py -checks='-*,readability-simplify-boolean-expr' -format -fix $PWD

Differential revision: https://reviews.llvm.org/D55584

llvm-svn: 349215
2018-12-15 00:15:33 +00:00
Pavel Labath d821c997aa Move RegisterValue,Scalar,State from Core to Utility
These three classes have no external dependencies, but they are used
from various low-level APIs. Moving them down to Utility improves
overall code layering (although it still does not break any particular
dependency completely).

The XCode project will need to be updated after this change.

Differential Revision: https://reviews.llvm.org/D49740

llvm-svn: 339127
2018-08-07 11:07:21 +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 97206d5727 Rename Error -> Status.
This renames the LLDB error class to Status, as discussed
on the lldb-dev mailing list.

A change of this magnitude cannot easily be done without
find and replace, but that has potential to catch unwanted
occurrences of common strings such as "Error".  Every effort
was made to find all the obvious things such as the word "Error"
appearing in a string, etc, but it's possible there are still
some lingering occurences left around.  Hopefully nothing too
serious.

llvm-svn: 302872
2017-05-12 04:51:55 +00:00
Zachary Turner 666cc0b291 Move DataBuffer / DataExtractor and friends from Core -> Utility.
llvm-svn: 296943
2017-03-04 01:30:05 +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
Zachary Turner bf9a77305f Move classes from Core -> Utility.
This moves the following classes from Core -> Utility.

ConstString
Error
RegularExpression
Stream
StreamString

The goal here is to get lldbUtility into a state where it has
no dependendencies except on itself and LLVM, so it can be the
starting point at which to start untangling LLDB's dependencies.
These are all low level and very widely used classes, and
previously lldbUtility had dependencies up to lldbCore in order
to use these classes.  So moving then down to lldbUtility makes
sense from both the short term and long term perspective in
solving this problem.

Differential Revision: https://reviews.llvm.org/D29427

llvm-svn: 293941
2017-02-02 21:39:50 +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
Enrico Granata 106aae5108 Because of our lifetime rules w.r.t. ValueObjects and ClusterManagers, synthetic children caching is a tricky area:
- if a synthetic child comes from the same hierarchy as its parent object, then it can't be cached by SharedPointer inside the synthetic provider, or it will cause a reference loop;
- but, if a synthetic child is made from whole cloth (e.g. from an expression, a memory region, ...), then it better be cached by SharedPointer, or it will be cleared out and cause an assert() to fail if used at a later point

For most cases of self-rooted synthetic children, we have a flag we set "IsSyntheticChildrenGenerated", but we were not using it to track caching. So, what ended up happening is each provider would set up its own cache, and if it got it wrong, a hard to diagnose crash would ensue

This patch fixes that by centralizing caching in ValueObjectSynthetic - if a provider returns a self-rooted child (as per the flag), then it gets cached centrally by the ValueObject itself
This cache is used only for lifetime management and not later retrieval of child values - a different cache handles that (because we might have a mix of self-rooted and properly nested child values for the same parent, we can't trivially use this lifetime cache for retrieval)

Fixes rdar://26480007

llvm-svn: 274683
2016-07-06 21:24:28 +00:00
Greg Clayton 63a27afae3 Added support for thread local variables on all Apple OS variants.
We had support that assumed that thread local data for a variable could be determined solely from the module in which the variable exists. While this work for linux, it doesn't work for Apple OSs. The DWARF for thread local variables consists of location opcodes that do something like:

DW_OP_const8u (x)
DW_OP_form_tls_address

or 

DW_OP_const8u (x)
DW_OP_GNU_push_tls_address

The "x" is allowed to be anything that is needed to determine the location of the variable. For Linux "x" is the offset within the TLS data for a given executable (ModuleSP in LLDB). For Apple OS variants, it is the file address of the data structure that contains a pthread key that can be used with pthread_getspecific() and the offset needed. 

This fix passes the "x" along to the thread:

virtual lldb::addr_t
lldb_private::Thread::GetThreadLocalData(const lldb::ModuleSP module, lldb::addr_t tls_file_addr);

Then this is passed along to the DynamicLoader::GetThreadLocalData():

virtual lldb::addr_t
lldb_private::DynamicLoader::GetThreadLocalData(const lldb::ModuleSP module, const lldb::ThreadSP thread, lldb::addr_t tls_file_addr);

This allows each DynamicLoader plug-in do the right thing for the current OS.

The DynamicLoaderMacOSXDYLD was modified to be able to grab the pthread key from the data structure that is in memory and call "void *pthread_getspecific(pthread_key_t key)" to get the value of the thread local storage and it caches it per thread since it never changes.

I had to update the test case to access the thread local data before trying to print it as on Apple OS variants, thread locals are not available unless they have been accessed at least one by the current thread.

I also added a new lldb::ValueType named "eValueTypeVariableThreadLocal" so that we can ask SBValue objects for their ValueType and be able to tell when we have a thread local variable.

<rdar://problem/23308080>

llvm-svn: 274366
2016-07-01 17:17:23 +00:00
Enrico Granata 64c034da2b SBValue::CreateValueFromData didn’t check whether the SBType passed into it is in fact a valid type - this can lead to LLDB crashing upon access
Committing on behalf of Sebastian Theophil

llvm-svn: 270456
2016-05-23 17:11:14 +00:00
Saleem Abdulrasool bb19a13c0b second pass over removal of Mutex and Condition
llvm-svn: 270024
2016-05-19 05:13:57 +00:00
Jim Ingham d612918367 Make the error return more explicit when an SBValue has no value.
llvm-svn: 251722
2015-10-30 21:43:15 +00:00
Siva Chandra 9ac7a6c51f [SBValue] Add a method GetNumChildren(uint32_t max)
Summary:
Along with this, support for an optional argument to the "num_children"
method of a Python synthetic child provider has also been added. These have
been added with the following use case in mind:

Synthetic child providers currently have a method "has_children" and
"num_children". While the former is good enough to know if there are
children, it does not give any insight into how many children there are.
Though the latter serves this purpose, calculating the number for children
of a data structure could be an O(N) operation if the data structure has N
children. The new method added in this change provide a middle ground.
One can call GetNumChildren(K) to know if a child exists at an index K
which can be as large as the callers tolerance can be. If the caller wants
to know about children beyond K, it can make an other call with 2K. If the
synthetic child provider maintains state about it counting till K
previosly, then the next call is only an O(K) operation. Infact, all
calls made progressively with steps of K will be O(K) operations.

Reviewers: vharron, clayborg, granata.enrico

Subscribers: labath, lldb-commits

Differential Revision: http://reviews.llvm.org/D13778

llvm-svn: 250930
2015-10-21 19:28:08 +00:00
Keno Fischer 8cd7d34508 Fix build with python disabled after r249597
Summary: r249597 introduced a usage of GetTypeSummary in lldb-mi.
That function used to only be available when python is enabled.
However, there is no reason for that anymore since that is now
dealt with at a different abstraction layer.

Reviewers: ki.stfu, evgeny777, clayborg, granata.enrico

Subscribers: elehcim, brucem, lldb-commits

Differential Revision: http://reviews.llvm.org/D13577

llvm-svn: 250494
2015-10-16 05:21:23 +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
Chaoren Lin 4630de80c5 Deprecate SBValue::TypeIsPointerType.
Reviewers: clayborg

Subscribers: lldb-commits

Differential Revision: http://reviews.llvm.org/D11540

llvm-svn: 243333
2015-07-27 21:51:56 +00:00
Enrico Granata 989e213c18 Fix an issue where an SBValue could end up capturing a synthetic value and would then be unable to return the non-synthetic version thereof
This patch makes the backing ValueImpl always store the root-most value no matter the "flavor" that is initially passed into it

llvm-svn: 240578
2015-06-24 19:53:22 +00:00
Greg Clayton 7d1483f51c Cleanup the code a bit to make it more readable.
Add some if/then to avoid calling a function to get dynamic/synthetic types if we know we aren't going to need to call it.

Avoid calling a function that returns a shared pointer twice: once for testing it and once for assigning it (even though that shared pointer is cached inside the value object), it just makes the code a bit clearer.

llvm-svn: 240299
2015-06-22 17:38:30 +00:00
Zachary Turner 1124045ac7 Don't #include "lldb-python.h" from anywhere.
Since interaction with the python interpreter is moving towards
being more isolated, we won't be able to include this header from
normal files anymore, all includes of it should be localized to
the python library which will live under source/bindings/API/Python
after a future patch.

None of the files that were including this header actually depended
on it anyway, so it was just a dead include in every single instance.

llvm-svn: 238581
2015-05-29 17:41:47 +00:00
Bruce Mitchener 11d86362ae Remove duplicated code for synthetic array members.
Summary:
The code for GetSyntheticArrayMemberFromPointer and
GetSyntheticArrayMemberFromArray was identical, so just collapse the
the methods into one.

Reviewers: granata.enrico, clayborg

Reviewed By: clayborg

Subscribers: lldb-commits

Differential Revision: http://reviews.llvm.org/D7911

llvm-svn: 230708
2015-02-26 23:55:39 +00:00
Enrico Granata 560558eb7c Introduce the notion of "runtime support values"
A runtime support value is a ValueObject whose only purpose is to support some language runtime's operation, but it does not directly provide any user-visible benefit
As such, unless the user is working on the runtime support, it is mostly safe for them not to see such a value when debugging

It is a language runtime's job to check whether a ValueObject is a support value, and that - in conjunction with a target setting - is used by frame variable and target variable
SBFrame::GetVariables gets a new overload with yet another flag to dictate whether to return those support values to the caller - that which defaults to the setting's value

rdar://problem/15539930

llvm-svn: 228791
2015-02-11 02:35:39 +00:00
Ilia K 761a7a4b67 Fix evaluation commands (MI)
Summary:
These changes include:
* Fix -var-create to be able use current frame '*' (MI)
* Fix print-values option in -var-update (MI)
* Fix 'variable doesn't exist' error in -var-show-attributes (MI)
* Mark print-values option as 'handled-by-cmd' in -var-update (MI)
* Fix SBValue::GetValueDidChange if value was changed
* Fix lldb-mi: -data-evaluate-expression shows undef vars. Before this fix -data-evaluate-expression perceives undefined variables as strings:
```
(gdb)
-data-evaluate-expression undef
^done,value="undef"
```
* Minor fix: -data-evaluate-expression uses IsUnknownValue()
* Enable MiEvaluateTestCase test

All test pass on OS X.

Reviewers: abidh, clayborg

Subscribers: lldb-commits, clayborg, abidh

Differential Revision: http://reviews.llvm.org/D7463

llvm-svn: 228414
2015-02-06 18:10:30 +00:00