Commit Graph

1182 Commits

Author SHA1 Message Date
Jim Ingham 798174455f Fix Cmake files for ExpressionSourceCode.cpp -> ClangExpressionSourceCode.cpp.
llvm-svn: 355561
2019-03-06 22:53:38 +00:00
Jim Ingham ea401ec7f4 Factor the clang specific parts of ExpressionSourceCode.{h,cpp} into the clang plugin.
NFC

Differential Revision: https://reviews.llvm.org/D59040

llvm-svn: 355560
2019-03-06 22:43:25 +00:00
Adrian Prantl 0e4c482124 Pass ConstString by value (NFC)
My apologies for the large patch. With the exception of ConstString.h
itself it was entirely produced by sed.

ConstString has exactly one const char * data member, so passing a
ConstString by reference is not any more efficient than copying it by
value. In both cases a single pointer is passed. But passing it by
value makes it harder to accidentally return the address of a local
object.

(This fixes rdar://problem/48640859 for the Apple folks)

Differential Revision: https://reviews.llvm.org/D59030

llvm-svn: 355553
2019-03-06 21:22:25 +00:00
Alex Langford 81dbc02671 [Expression] Remove unused parameter from Evaluate
llvm-svn: 355375
2019-03-05 03:33:34 +00:00
Jonas Devlieghere d77c2e0926 [Reproducers] Capture and replay interpreter commands.
This patch adds the necessary logic to capture and replay commands
entered into the command interpreter. A DataRecorder shadows the input
and writes its data to a know file. During replay this file is used as
the command interpreter's input.

It's possible to the command interpreter more than once, with a
different input source. We support this scenario by using multiple
buffers. The synchronization for this takes place at the SB layer, where
we create a new recorder every time the debugger input is changed.
During replay we use the corresponding buffer as input.

Differential revision: https://reviews.llvm.org/D58564

llvm-svn: 355249
2019-03-02 00:20:26 +00:00
Jim Ingham b12ac2b689 Pass arguments correctly to the objc object checker on arm64
Traditionally objc had two entry points, objc_msgSend for scalar
return methods, and objc_msgSend_stret for struct return convention
methods.  But on arm64 the second was not needed (since arm64 doesn't
use an argument register for the struct return pointer) so it was removed.

The code that dispatches to the objc object checker when it sees some
flavor of objc_msgSend was not aware of this change so was sending the
wrong arguments to the checker.

<rdar://problem/48315890>

Differential Revision: https://reviews.llvm.org/D58699

llvm-svn: 355026
2019-02-27 20:27:25 +00:00
Jonas Devlieghere d5b440369d Replace 'ap' with 'up' suffix in variable names. (NFC)
The `ap` suffix is a remnant of lldb's former use of auto pointers,
before they got deprecated. Although all their uses were replaced by
unique pointers, some variables still carried the suffix.

In r353795 I removed another auto_ptr remnant, namely redundant calls to
::get for unique_pointers. Jim justly noted that this is a good
opportunity to clean up the variable names as well.

I went over all the changes to ensure my find-and-replace didn't have
any undesired side-effects. I hope I didn't miss any, but if you end up
at this commit doing a git blame on a weirdly named variable, please
know that the change was unintentional.

llvm-svn: 353912
2019-02-13 06:25:41 +00:00
Jonas Devlieghere 70355ace3f Remove redundant ::get() for smart pointer. (NFC)
This commit removes redundant calls to smart pointer’s ::get() method.

https://clang.llvm.org/extra/clang-tidy/checks/readability-redundant-smartptr-get.html

llvm-svn: 353795
2019-02-12 03:47:39 +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
James Y Knight ae2f951219 [opaque pointer types] Update calls to CreateCall to pass the function
type in lldb and polly.

llvm-svn: 353549
2019-02-08 19:30:46 +00:00
Aleksandr Urakov 40624a085c [Expressions] Add support of expressions evaluation in some object's context
Summary:
This patch adds support of expression evaluation in a context of some object.
Consider the following example:
```
struct S {
  int a = 11;
  int b = 12;
};

int main() {
  S s;
  int a = 1;
  int b = 2;
  // We have stopped here
  return 0;
}
```
This patch allows to do something like that:
```
lldb.frame.FindVariable("s").EvaluateExpression("a + b")
```
and the result will be `33` (not `3`) because fields `a` and `b` of `s` will be
used (not locals `a` and `b`).

This is achieved by replacing of `this` type and object for the expression. This
has some limitations: an expression can be evaluated only for values located in
the debuggee process memory (they must have an address of `eAddressTypeLoad`
type).

Reviewers: teemperor, clayborg, jingham, zturner, labath, davide, spyffe, serge-sans-paille

Reviewed By: jingham

Subscribers: abidh, lldb-commits, leonid.mashinskiy

Tags: #lldb

Differential Revision: https://reviews.llvm.org/D55318

llvm-svn: 353149
2019-02-05 09:14:36 +00:00
Aleksandr Urakov 758657e565 [PDB] Fix location retrieval for function local variables and arguments that are
stored relative to VFRAME

Summary:
This patch makes LLDB able to retrieve proper values for function arguments and
local variables stored in PDB relative to VFRAME register.

Patch contains retrieval of corresponding FPO table entries from PDB and a
generic translator from FPO programs to DWARF expressions to get correct VFRAME
value.

Patch also improves variables-locations.test and makes this test passable on
x86.

Patch By: leonid.mashinsky

Reviewers: zturner, asmith, stella.stamenova, aleksandr.urakov

Reviewed By: zturner

Subscribers: arphaman, labath, mgorny, aprantl, JDevlieghere, lldb-commits

Tags: #lldb

Differential Revision: https://reviews.llvm.org/D55122

llvm-svn: 352845
2019-02-01 10:01:18 +00:00
Adrian Prantl d13777aa18 Make Type::GetByteSize optional (NFC)
This is a continuation of my quest to make the size 0 a supported value.

This reapplies r352394 with additional PDB parser fixes prepared by
Pavel Labath!

Differential Revision: https://reviews.llvm.org/D57273

llvm-svn: 352521
2019-01-29 17:52:34 +00:00
Adrian Prantl 2a56e97f74 Revert "Make Type::GetByteSize optional (NFC)"
This reverts commit r352394 because it broke three windows-specific tests.

llvm-svn: 352434
2019-01-28 21:44:35 +00:00
Adrian Prantl 729fcf1793 Make Type::GetByteSize optional (NFC)
This is a continuation of my quest to make the size 0 a supported value.

Differential Revision: https://reviews.llvm.org/D57273

llvm-svn: 352394
2019-01-28 17:49:33 +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
Adrian Prantl d6a9bbf68e Replace auto -> llvm::Optional<uint64_t>
This addresses post-commit feedback for https://reviews.llvm.org/D56688

llvm-svn: 351237
2019-01-15 20:33:58 +00:00
Adrian Prantl d963a7c398 Make CompilerType::getBitSize() / getByteSize() return an optional result. NFC
The code in LLDB assumes that CompilerType and friends use the size 0
as a sentinel value to signal an error. This works for C++, where no
zero-sized type exists, but in many other programming languages
(including I believe C) types of size zero are possible and even
common. This is a particular pain point in swift-lldb, where extra
code exists to double-check that a type is *really* of size zero and
not an error at various locations.

To remedy this situation, this patch starts by converting
CompilerType::getBitSize() and getByteSize() to return an optional
result. To avoid wasting space, I hand-rolled my own optional data
type assuming that no type is larger than what fits into 63
bits. Follow-up patches would make similar changes to the ValueObject
hierarchy.

rdar://problem/47178964

Differential Revision: https://reviews.llvm.org/D56688

llvm-svn: 351214
2019-01-15 18:07:52 +00:00
James Y Knight 62df5eed16 [opaque pointer types] Remove some calls to generic Type subtype accessors.
That is, remove many of the calls to Type::getNumContainedTypes(),
Type::subtypes(), and Type::getContainedType(N).

I'm not intending to remove these accessors -- they are
useful/necessary in some cases. However, removing the pointee type
from pointers would potentially break some uses, and reducing the
number of calls makes it easier to audit.

llvm-svn: 350835
2019-01-10 16:07:20 +00:00
Pavel Labath f760f5aef4 Simplify ObjectFile::GetArchitecture
Summary:
instead of returning the architecture through by-ref argument and a
boolean value indicating success, we can just return the ArchSpec
directly. Since the ArchSpec already has an invalid state, it can be
used to denote the failure without the additional bool.

Reviewers: clayborg, zturner, espindola

Subscribers: emaste, arichardson, JDevlieghere, lldb-commits

Differential Revision: https://reviews.llvm.org/D56129

llvm-svn: 350291
2019-01-03 10:37:19 +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
Aleksandr Urakov a5235af980 [PDB] Support PDB-backed expressions evaluation (+ fix stuck test)
Summary:
This patch contains several small fixes, which makes it possible to evaluate
expressions on Windows using information from PDB. The changes are:
- several sanitize checks;
- make IRExecutionUnit::MemoryManager::getSymbolAddress to not return a magic
  value on a failure, because callers wait 0 in this case;
- entry point required to be a file address, not RVA, in the ObjectFilePECOFF;
- do not crash on a debuggee second chance exception - it may be an expression
  evaluation crash. Also fix detection of "crushed" threads in tests;
- create parameter declarations for functions in AST to make it possible to call
  debugee functions from expressions;
- relax name searching rules for variables, functions, namespaces and types. Now
  it works just like in the DWARF plugin;
- fix endless recursion in SymbolFilePDB::ParseCompileUnitFunctionForPDBFunc.

Reviewers: zturner, asmith, stella.stamenova

Reviewed By: stella.stamenova, asmith

Tags: #lldb

Differential Revision: https://reviews.llvm.org/D53759

llvm-svn: 348136
2018-12-03 13:31:13 +00:00
Stella Stamenova 9a3686b208 Revert "[PDB] Support PDB-backed expressions evaluation"
This reverts commit dec87759523b2f22fcff3325bc2cd543e4cda0e7.

This commit caused the tests on Windows to run forever rather than complete.
Reverting until the commit can be fixed to not stall.

llvm-svn: 348009
2018-11-30 17:29:54 +00:00
Aleksandr Urakov e0366d1db5 [PDB] Support PDB-backed expressions evaluation
Summary:
This patch contains several small fixes, which makes it possible to evaluate
expressions on Windows using information from PDB. The changes are:
- several sanitize checks;
- make IRExecutionUnit::MemoryManager::getSymbolAddress to not return a magic
  value on a failure, because callers wait 0 in this case;
- entry point required to be a file address, not RVA, in the ObjectFilePECOFF;
- do not crash on a debuggee second chance exception - it may be an expression
  evaluation crash;
- create parameter declarations for functions in AST to make it possible to call
  debugee functions from expressions;
- relax name searching rules for variables, functions, namespaces and types. Now
  it works just like in the DWARF plugin;
- fix endless recursion in SymbolFilePDB::ParseCompileUnitFunctionForPDBFunc.

Reviewers: zturner, asmith, stella.stamenova

Reviewed By: stella.stamenova, asmith

Tags: #lldb

Differential Revision: https://reviews.llvm.org/D53759

llvm-svn: 347962
2018-11-30 07:12:22 +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
Jonas Devlieghere 50bc1ed290 [FileSystem] Open File instances through the FileSystem.
This patch modifies how we open File instances in LLDB. Rather than
passing a path or FileSpec to the constructor, we now go through the
virtual file system. This is needed in order to make things work with
the VFS in the future.

Differential revision: https://reviews.llvm.org/D54020

llvm-svn: 346049
2018-11-02 22:34:51 +00:00
Jonas Devlieghere 8f3be7a32b [FileSystem] Move path resolution logic out of FileSpec
This patch removes the logic for resolving paths out of FileSpec and
updates call sites to rely on the FileSystem class instead.

Differential revision: https://reviews.llvm.org/D53915

llvm-svn: 345890
2018-11-01 21:05:36 +00:00
Zachary Turner 117b1fa19a Don't type-erase the FunctionNameType or TypeClass enums.
This is similar to D53597, but following up with 2 more enums.
After this, all flag enums should be strongly typed all the way
through to the symbol files plugins.

Differential Revision: https://reviews.llvm.org/D53616

llvm-svn: 345314
2018-10-25 20:45:40 +00:00
George Rimar d871964887 [LLDB] - Parse the DW_LLE_startx_length correctly for DWARF v5 case.
Currently, we always parse the length field of DW_LLE_startx_length entry as U32.
That is correct for pre-standard definition:

https://gcc.gnu.org/wiki/DebugFission - "A start/length entry contains one unsigned LEB128 number
and a 4-byte unsigned value (as would be represented by the form code DW_FORM_const4u). The first
number is an index into the .debug_addr section that selects the beginning offset, and the second
number is the length of the range. ")

But DWARF v5 says: "This is a form of bounded location description that has two unsigned ULEB operands.
The first value is an address index (into the .debug_addr section) that indicates the beginning of the address
range over which the location is valid. The second value is the length of the range."

Fortunately, we can easily handle the difference. No test case because it seems impossible to test
until we will be ready to use DWARF v5 in tests that need to run the executables.

Differential revision: https://reviews.llvm.org/D53646

llvm-svn: 345249
2018-10-25 09:22:26 +00:00
George Rimar e4dee2696e [LLDB] - Implement the support for the .debug_loclists section.
This implements the support for .debug_loclists section, which is
DWARF 5 version of .debug_loc.

Currently, clang is able to emit it with the use of D53365.

Differential revision: https://reviews.llvm.org/D53436

llvm-svn: 345016
2018-10-23 09:46:15 +00:00
Krasimir Georgiev a35912da9f Revert "Return a named error in the result object of an expression with no result"
This reverts commit r344647.
This causes build failures with [-Werror, -Wswitch]. Some cases where the newly
introduced enum value is not handled in particular are in:
  lldb/source/Expression/REPL.cpp:350
  lldb/source/Interpreter/CommandInterpreter.cpp:1529
(maybe there could be more)

As I don't understand lldb to make sure the likely trivial fixes are
correct and also as they might need additional tests, leaving to the
author to resolve.

llvm-svn: 344722
2018-10-18 03:10:43 +00:00
Jim Ingham b1ecc3cac2 Return a named error in the result object of an expression with no result
Before we returned an error that was not exposed in the SB API and no useful
error message.  This change returns eExpressionProducedNoResult and an
appropriate error string.

<rdar://problem/44539514>

Differential Revision: https://reviews.llvm.org/D53309

llvm-svn: 344647
2018-10-16 21:58:40 +00:00
Davide Italiano d405d2792d Revert "[IRInterpreter] Minor cleanups, add comments. NFCI."
This breaks buildbots.

llvm-svn: 342404
2018-09-17 18:14:38 +00:00
Davide Italiano a64157f19f [IRInterpreter] Minor cleanups, add comments. NFCI.
llvm-svn: 342280
2018-09-14 20:48:34 +00:00
Davide Italiano 5f6789ef6e [IRInterpreter] Fall back to JIT with 128-bit values.
They're not that common, and falling back is definitely
better than throwing an error instead of the result. If we
feel motivated, we might end up implementing support for these,
but it's unclear whether it's worth the effort/complexity.

Fixes PR38925.

<rdar://problem/44436068>

llvm-svn: 342262
2018-09-14 18:55:31 +00:00
Raphael Isemann 7f88829cea Add support for descriptions with command completions.
Summary:
This patch adds a framework for adding descriptions to the command completions we provide.
It also adds descriptions for completed top-level commands so that we can test this code.

Completions are in general supposed to be displayed alongside the completion itself. The descriptions
can be used to provide additional information about the completion to the user. Examples for descriptions
are function signatures when completing function calls in the expression command or the binary name
when providing completion for a symbol.

There is still some boilerplate code from the old completion API left in LLDB (mostly because the respective
APIs are reused for non-completion related purposes, so the CompletionRequest doesn't make sense to be
used), so that's why I still had to change some function signatures. Also, as the old API only passes around a
list of matches, and the descriptions are for these functions just another list, I had to add some code that
essentially just ensures that both lists are always the same side (e.g. all the manual calls to
`descriptions->AddString(X)` below a `matches->AddString(Y)` call).

The initial command descriptions that come with this patch are just reusing the existing
short help that is already added in LLDB.

An example completion with descriptions looks like this:
```
(lldb) pl
Available completions:
        platform -- Commands to manage and create platforms.
        plugin   -- Commands for managing LLDB plugins.
```

Reviewers: #lldb, jingham

Reviewed By: #lldb, jingham

Subscribers: jingham, JDevlieghere, lldb-commits

Differential Revision: https://reviews.llvm.org/D51175

llvm-svn: 342181
2018-09-13 21:26:00 +00:00
Jonas Devlieghere bf2d112c15 [DWARFExpression] Read literars as unsigned values.
After landing r341457, we started seeing a failure on the swift-lldb
bots. The change was correct and pretty straightforward, a DW_OP_constu
was replaced with DW_OP_lit23, the value remaining identical.

  0x000000f4: DW_TAG_variable
		DW_AT_location    (0x00000000
		  [0x0000000100000a51,  0x0000000100000d47): DW_OP_lit23, DW_OP_stack_value)
		DW_AT_name        ("number")

However, this broke LLDB.

  (Int) number = <extracting data from value failed>

The value was read correctly, but apparently the value's type was different.
When reading a constu it was reading a uint64 (m_type = e_ulonglong) while for
the literal, it got a signed int (m_type = e_sint). This change makes sure we
read the value as an unsigned.

Differential revision: https://reviews.llvm.org/D51730

llvm-svn: 342142
2018-09-13 15:18:39 +00:00
Frederic Riss ae6ca2fc3f Allow IRInterpreter to deal with non-power-of-2 sized types to support some bitfield accesses.
Summary:
For some bitfield patterns (like the one added by this commit), Clang will
generate non-regular data types like i24 or i48. This patch follows a
pretty naive approach of just bumping the type size to the next power of 2.
DataExtractor know how to deal with weird sizes. The operations on Scalar
do not know how to deal with those types though, so we have to legalize the
size when creating a Scalar.

Reviewers: jingham, clayborg

Subscribers: lldb-commits

Differential Revision: https://reviews.llvm.org/D51245

llvm-svn: 340880
2018-08-28 22:50:01 +00:00
Vedant Kumar f71dd3445b [IRMemoryMap] Shrink Allocation and make it move-only (NFC)
Profiling data show that Allocation::operator= is hot (see the data
attached to the Phab review).

Reorder a few fields within Allocation to avoid implicit structure
padding and shrink the structure. This should make copies a bit cheaper.

Also, given that an Allocation contains a std::vector (by way of
DataBufferHeap), it's preferable to make it move-only instead of
permitting expensive copies. As an added benefit this allows us to have
a single Allocation constructor instead of two.

Differential Revision: https://reviews.llvm.org/D50271

llvm-svn: 339290
2018-08-08 21:26:49 +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
Vedant Kumar 9452359887 [IRMemoryMap] Avoid redundant zero-init in the Allocation constructor (NFC)
In the lldb-bench/arithmetic benchmark, 1.7% of the total running time
is spent zero-initializing a std::vector that has already been zeroed.

llvm-svn: 339051
2018-08-06 20:13:52 +00:00
Pavel Labath 67b8f573a7 Fix whitespace formatting in DWARFExpression::DumpLocation
we were printing an extra space before the start for the expression and
an extra space after some dwarf operators. This makes sure we only print
exactly one space **between** operators and nowhere else.

llvm-svn: 337452
2018-07-19 13:30:56 +00:00
Jim Ingham 0d231f7161 Add a way to load an image using a library name and list of paths.
This provides an efficient (at least on Posix platforms) way to offload to the
target process the search & loading of a library when all we have are the 
library name and a set of potential candidate locations.

<rdar://problem/40905971>

llvm-svn: 335912
2018-06-28 20:02:11 +00:00
Greg Clayton 59a1be3acf Fix an issue where DW_OP_deref might be dereferencing a file address. Convert the file address to a load address so this works.
https://bugs.llvm.org/show_bug.cgi?id=36871

llvm-svn: 335263
2018-06-21 17:58:06 +00:00
Pavel Labath c7c9d76187 IRInterpreter: fix sign extension of small types (pr37840)
Sign-extension of small types (e.g. short) was not handled correctly.
The reason for that was that when we were assigning the a value to the
Scalar object, we would accidentally promote the type to int (even
though the assignment code in AssignTypeToMatch tried to cast the value
to the appropriate type, it would still invoke the "int" version of
operator=). Instead, I use the APInt version of operator=, where the
bitwidth is specified explicitly. Among other things, this allows us to
fold the individual size cases into one.

llvm-svn: 335114
2018-06-20 10:45:29 +00:00
Pavel Labath 60f028ff03 Replace HostInfo::GetLLDBPath with specific functions
Summary:
Instead of a function taking an enum value determining which path to
return, we now have a suite of functions, each returning a single path
kind. This makes it easy to move the python-path function into a
specific plugin in a follow-up commit.

All the users of GetLLDBPath were converted to call specific functions
instead. Most of them were hard-coding the enum value anyway, so this
conversion was simple. The only exception was SBHostOS, which I've
changed to use a switch on the incoming enum value.

Reviewers: clayborg, zturner

Subscribers: lldb-commits

Differential Revision: https://reviews.llvm.org/D48272

llvm-svn: 335052
2018-06-19 15:09:07 +00:00
Vedant Kumar 5b71e75ed3 [IRMemoryMap] Fix the alignment adjustment in Malloc
This prevents Malloc from allocating the same chunk of memory twice, as
a byproduct of an alignment adjustment which gave the client access to
unallocated memory.

Prior to this patch, the newly-added test failed with:

$ lldb-test ir-memory-map ... ir-memory-map-overlap1.test
...
Command: malloc(size=64, alignment=32)
Malloc: address = 0x1000cd080
Command: malloc(size=64, alignment=8)
Malloc: address = 0x1000cd0b0
Malloc error: overlapping allocation detected, previous allocation at [0x1000cd080, 0x1000cd0c0)

Differential Revision: https://reviews.llvm.org/D47551

llvm-svn: 333697
2018-05-31 22:08:59 +00:00
Jason Molenda a6922415b1 Set m_struct_valid to initial value in ctor.
Patch from Tom Tromey <ttromey@mozilla.com>.

Differential Revision: https://reviews.llvm.org/D47481

llvm-svn: 333690
2018-05-31 20:01:15 +00:00
Bruce Mitchener 4ebdee0a59 Typo fixes.
Reviewers: javed.absar

Subscribers: ki.stfu, JDevlieghere, lldb-commits

Differential Revision: https://reviews.llvm.org/D47421

llvm-svn: 333399
2018-05-29 09:10:46 +00:00
Zachary Turner 8e8d4b91a8 Break dependency from Core to ObjectFileJIT.
The only reason this was here was so that Module could have a
function called CreateJITModule which created things in a special
order.  Instead of making this specific to creating JIT modules,
I converted this into a template function that can create a module
for any type of object file plugin and just forwards arguments
through.  Since the template is not instantiated in Core, the linker
(and header file) dependency moves to the point where it is
instantiated, which only happens in Expression.  Conceptually, this
location also makes more sense for a dependency on ObjectFileJIT.
After all, we JIT expressions so it's no surprise that Expression
needs to make use of ObjectFileJIT.

Differential Revision: https://reviews.llvm.org/D47228

llvm-svn: 333143
2018-05-23 23:56:09 +00:00
Adrian Prantl b51804e0d8 DWARFExpression: Convert file addresses to load addresses early on.
This is a change that only affects Swift and is NFC for the language
plugins on llvm.org. In Swift, we can have global variables with a
location such as DW_OP_addr <addr> DW_OP_deref. The DWARF expression
evaluator doesn't know how to apply a DW_OP_deref to a file address,
but at the very end we convert the file address into a load address.

This patch moves the file->load address conversion to right after the
result of the DW_OP_addr is pushed onto the stack so that a subsequent
DW_OP_deref (and potentially other operations) can be interpreted.

rdar://problem/39767528

Differential revision: https://reviews.llvm.org/D46362

llvm-svn: 331492
2018-05-03 23:32:47 +00:00
Adrian Prantl b78a577179 Revert "DWARFExpression: Convert file addresses to load addresses early on."
This reverts commit 331462 while investigating bot breakage.

llvm-svn: 331480
2018-05-03 20:19:39 +00:00
Adrian Prantl c42fa4be1f DWARFExpression: Convert file addresses to load addresses early on.
This is a change that only affects Swift and is NFC for the language
plugins on llvm.org. In Swift, we can have global variables with a
location such as DW_OP_addr <addr> DW_OP_deref. The DWARF expression
evaluator doesn't know how to apply a DW_OP_deref to a file address,
but at the very end we convert the file address into a load address.

This patch moves the file->load address conversion to right after the
result of the DW_OP_addr is pushed onto the stack so that a subsequent
DW_OP_deref (and potentially other operations) can be interpreted.

rdar://problem/39767528

Differential revision: https://reviews.llvm.org/D46362

llvm-svn: 331462
2018-05-03 16:51:37 +00:00
Adrian Prantl d8f460e864 Enable AUTOBRIEF in doxygen configuration.
This brings the LLDB configuration closer to LLVM's and removes visual
clutter in the source code by removing the @brief commands from
comments.

This patch also reflows the paragraphs in all doxygen comments.

See also https://reviews.llvm.org/D46290.

Differential Revision: https://reviews.llvm.org/D46321

llvm-svn: 331373
2018-05-02 16:55:16 +00:00
Adrian Prantl 03219f7f64 Refactor GetNextPersistentVariableName into a non-virtual method
that takes a prefix string. This simplifies the implementation and
allows plugins such as the Swift plugin to supply different prefixes
for return and error variables.

rdar://problem/39299889

Differential Revision: https://reviews.llvm.org/D46088

llvm-svn: 331235
2018-04-30 23:59:17 +00:00
Adrian Prantl 5435f78046 Move the persistent variable counter into Target
so it can be shared across multiple language plugins.

In a multi-language project it is counterintuitive to have a result
variables reuse numbers just because they are using a different
language plugin in LLDB (but not for example, when they are
Objective-C versus C++, since they are both handled by Clang).

This is NFC on llvm.org except for the Go plugin.

rdar://problem/39299889

Differential Revision: https://reviews.llvm.org/D46083

llvm-svn: 331234
2018-04-30 23:59:15 +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
Jan Kratochvil e4777a9df5 Support reading section ".gnu_debugaltlink"
Differential revision: https://reviews.llvm.org/D40468

llvm-svn: 331148
2018-04-29 19:47:48 +00:00
Jan Kratochvil c4d65751df Move the codebase to use: DWARFCompileUnit -> DWARFUnit
Now the codebase can use the DWARFUnit superclass. It will make it later
seamlessly work also with DWARFPartialUnit for DWZ.

This patch is only a search-and-replace easily undone, nothing interesting
in it.

Differential revision: https://reviews.llvm.org/D42892

llvm-svn: 327810
2018-03-18 20:11:02 +00:00
Davide Italiano 45925d77d6 [IRExecutionUnit] Remove broken/dead code.
llvm-svn: 321833
2018-01-04 23:37:18 +00:00
Fangrui Song c09bce1146 Do not use default arguments of DataLayout::getPointer*. NFC
Summary: There are "FIXME"s in include/llvm/IR/DataLayout.h to remove the default arguments.

Reviewers: zturner, clayborg

Reviewed By: zturner

Subscribers: bjope

Differential Revision: https://reviews.llvm.org/D40064

llvm-svn: 319869
2017-12-06 01:32:06 +00:00
Pavel Labath d739636ccf Revert "[lldb] Use OrcMCJITReplacement rather than MCJIT as the underlying JIT for LLDB"
This commit really did not introduce any functional changes (for most
people) but it turns out it's not for the reason we thought it was.

The reason wasn't that Orc is a perfect drop-in replacement for MCJIT,
but it was because we were never using Orc in the first place, as it was
not initialized.

Orc's initialization relies on a global constructor in the LLVMOrcJIT.a.
Since this archive does not expose any symbols referenced from other
object files, it does not get linked into liblldb when linking against
llvm components statically. However, in an LLVM_LINK_LLVM_DYLIB=On
build, LLVMOrcJit.a is linked into libLLVM.so using --whole-archive, so
the global constructor does end up firing.

The result of using Orc jit is pr34194, where lldb fails to evaluate
even very simple expressions. This bug can be reproduced in
non-LLVM_LINK_LLVM_DYLIB builds by making sure Orc jit is linked into
liblldb, for example by #including
llvm/ExecutionEngine/OrcMCJITReplacement.h in IRExecutionUnit.cpp (and
adding OrcJIT as a dependency to the relevant CMakeLists.txt file). The
bug reproduces (at least) on linux and osx.

The root cause of the bug seems to be related to relocation processing.
It seems Orc processes relocations earlier than the system it is
replacing. This means the relocation processing happens before we have
had a chance to remap section load addresses to reflect their address in
the target process memory, so they end up pointing to locations in the
lldb's address space instead.

I am not sure whether this is a bug in Orc jit, or in how we are using
it from lldb, but in any case it is preventing us from using Orc right
now. Reverting this fixes LLVM_LINK_LLVM_DYLIB build, and makes it clear
that we are in fact *not* using Orc, and we never really were.

This reverts commit r279327.

llvm-svn: 318039
2017-11-13 14:03:17 +00:00
Tamas Berghammer 963ce483b8 Add support for the DWP debug info format
Summary:
The DWP (DWARF package) format is used to pack multiple dwo files
generated by split-dwarf into a single ELF file to make distributing
them easier. It is part of the DWARFv5 spec and can be generated by
dwp or llvm-dwp from a set of dwo files.

Caviats:
* Only the new version of the dwp format is supported (v2 in GNU
  numbering schema and v5 in the DWARF spec). The old version (v1) is
  already deprecated but binutils 2.24 still generates that one.
* Combining DWP files with module debugging is not yet supported.

Subscribers: emaste, mgorny, aprantl

Differential Revision: https://reviews.llvm.org/D36062

llvm-svn: 311775
2017-08-25 13:56:14 +00:00
Tamas Berghammer bba2c83493 Remove the DWARFExpression -> Clang ExpressionParser dependency
It was completly unused and broke the part of the encapsulation that
common code shouldn't depend on specific plugins or language specific
features.

llvm-svn: 311000
2017-08-16 11:45:10 +00:00
Rafael Espindola 86b875fc08 Update for llvm api change.
llvm-svn: 309916
2017-08-03 02:45:01 +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
Jim Ingham 56454b592d Add CopyDiagnostic to the DiagnosticManager.
From Gregor Milos (gmilos@apple.com), for:

https://reviews.llvm.org/D32078

llvm-svn: 300733
2017-04-19 18:56:44 +00:00
Michal Gorny 1052b72361 Revert r298776 - Expression: add missing linkage to RuntimeDyld ...
This needs to be addressed within LLVM itself.

llvm-svn: 299095
2017-03-30 18:24:07 +00:00
Michal Gorny a32fc333d2 Expression: add missing linkage to RuntimeDyld component
Add missing linkage from lldbExpression library to LLVMRuntimeDyld.
Otherwise the build against shared LLVM libraries fails with:

    lib64/liblldbExpression.a(IRExecutionUnit.cpp.o):IRExecutionUnit.cpp:function llvm::RTDyldMemoryManager::deregisterEHFrames(unsigned char*, unsigned long, unsigned long): error: undefined reference to 'llvm::RTDyldMemoryManager::deregisterEHFramesInProcess(unsigned char*, unsigned long)'

Differential Revision: https://reviews.llvm.org/D31367

llvm-svn: 298776
2017-03-25 18:51:29 +00:00
Bruce Mitchener ef4536c389 Fix warnings from clang build on macOS.
Reviewers: lldb-commits

Subscribers: lldb-commits

Differential Revision: https://reviews.llvm.org/D31279

llvm-svn: 298585
2017-03-23 09:52:26 +00:00
Jason Molenda ab2dae0a9c Initialize m_allow_cxx, m_allow_objc. These ivars in the base class are not
initialized in the ctor and they're only initialized to 'true' in ClangUserExpression.cpp
when specific languages are detected so we can use uninitialized values.  This
bug has been present since the ivars were added in r144042.
<rdar://problem/31105864> 

llvm-svn: 298333
2017-03-21 02:59:15 +00:00
Zachary Turner fb1a0a0d2f Move many other files from Core -> Utility.
llvm-svn: 297043
2017-03-06 18:34:25 +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 9739a552c2 Fix DataExtractor failures.
Some code that doesn't get compiled on Windows had some references
that needed updating, and I missed those.

llvm-svn: 296930
2017-03-03 23:52:09 +00:00
Zachary Turner 29cb868aa4 Isolate Target-specific functionality of DataExtractor.
In an effort to move the various DataBuffer / DataExtractor
classes from Core -> Utility, we have to separate the low-level
functionality from the higher level functionality.  Only a
few functions required anything other than reading/writing
raw bytes, so those functions are separated out into a
more appropriate area.  Specifically, Dump() and DumpHexBytes()
are moved into free functions in Core/DumpDataExtractor.cpp,
and GetGNUEHPointer is moved into a static function in the
only file that it's referenced from.

Differential Revision: https://reviews.llvm.org/D30560

llvm-svn: 296910
2017-03-03 20:57:05 +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 01c3243fc1 Remove dependencies from Utility to Core and Target.
With this patch, the only dependency left is from Utility
to Host.  After this is broken, Utility will finally be
standalone.

Differential Revision: https://reviews.llvm.org/D29909

llvm-svn: 295088
2017-02-14 19:06:07 +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
Chris Bieneman 494f277af5 [CMake] Add accurate dependency specifications
Summary:
This patch adds accurate dependency specifications to the mail LLDB libraries and tools.

In all cases except lldb-server, these dependencies are added in addition to existing dependencies (making this low risk), and I performed some code cleanup along the way.

For lldb-server I've cleaned up the LLVM dependencies down to just the minimum actually required. This is more than lldb-server actually directly references, and I've left a todo in the code to clean that up.

Reviewers: labath, zturner

Subscribers: lldb-commits, danalbert, srhines, ki.stfu, mgorny, jgosnell

Differential Revision: https://reviews.llvm.org/D29333

llvm-svn: 293686
2017-01-31 20:43:05 +00:00
David Blaikie a322f36cfd Make lldb -Werror clean for -Wstring-conversion
Also found/fixed one bug identified by this warning in
RenderScriptx86ABIFixups.cpp where a string literal was being used in an
effort to provide a name for an instruction/register, but was instead
being passed as the bool 'isVolatile' parameter.

llvm-svn: 291198
2017-01-06 00:38:06 +00:00
Pavel Labath f31c9d27a4 Silence some -Wstring-conversion warnings
lldbassert(!"foo") -> lldbassert(0 && "foo")

In one case, this actually detected a logic error in the assertion (missing !).

llvm-svn: 291102
2017-01-05 13:18:42 +00:00
Luke Drummond f5bb1d6c4e Expression evaluation for overloaded C functions (redux)
This is a redux of [Ewan's patch](https://reviews.llvm.org/D17957) , refactored
to properly substitute primitive  types using a hook in the itanium demangler,
and updated after the previous patch went stale

The new `SubsPrimitiveParmItanium` function takes a symbol name and replacement
primitive type parameter as before but parses it using the FastDemangler, which
has been modified to be able to notify clients of parse events (primitive types
at this point).

Additionally, we now use a `set` of `ConstStrings` instead of a `vector` so
that we don't try and resolve the same invalid candidate multiple times.

Differential Revision: https://reviews.llvm.org/D27223
Subscribers: lldb-commits

llvm-svn: 290117
2016-12-19 17:22:44 +00:00
Pavel Labath 43d354182f Use Timeout<> in EvaluateExpressionOptions class
llvm-svn: 288797
2016-12-06 11:24:51 +00:00
Alexander Shaposhnikov 696bd63550 [lldb] Fix typos in file headers
This diff fixes typos in file headers (incorrect file names).

Test plan:

Under llvm/tools/lldb/source:
find ./* -type f | grep -e '\(cpp\|h\)$' | while read F; do B=$(basename $F); echo $F head -n 1 $F | grep -v $B | wc -l ; done

Differential revision: https://reviews.llvm.org/D27115

llvm-svn: 287966
2016-11-26 05:23:44 +00:00
Chris Bieneman b653c4957d [CMake] NFC. Updating CMake dependency specifications
This patch updates a bunch of places where add_dependencies was being explicitly called to add dependencies on intrinsics_gen to instead use the DEPENDS named parameter. This cleanup is needed for a patch I'm working on to add a dependency debugging mode to the build system.

llvm-svn: 287408
2016-11-18 23:31:53 +00:00
Zachary Turner c156427ded Don't allow direct access to StreamString's internal buffer.
This is a large API change that removes the two functions from
StreamString that return a std::string& and a const std::string&,
and instead provide one function which returns a StringRef.

Direct access to the underlying buffer violates the concept of
a "stream" which is intended to provide forward only access,
and makes porting to llvm::raw_ostream more difficult in the
future.

Differential Revision: https://reviews.llvm.org/D26698

llvm-svn: 287152
2016-11-16 21:15:24 +00:00
Zachary Turner e2411fabda Make DiagnosticsManager functions take StringRefs.
llvm-svn: 286730
2016-11-12 19:12:56 +00:00
Zachary Turner c5d7df9035 Convert some Expression parser functions to StringRef.
llvm-svn: 286208
2016-11-08 04:52:16 +00:00
Jim Ingham 0298082541 UserExpression::Evaluate only returns a non-empty ValueObjectSP
if it returns eExpressionCompleted.  Don't try to get the error
from the ValueObjectSP if that's not true.

I just have a report of this from the field, I don't know how
to make it fail yet.

<rdar://problem/29113004>

llvm-svn: 286170
2016-11-07 22:47:01 +00:00
Malcolm Parsons 771ef6d4f1 Fix Clang-tidy readability-redundant-string-cstr warnings
Reviewers: zturner, labath

Subscribers: tberghammer, danalbert, lldb-commits
    
Differential Revision: https://reviews.llvm.org/D26233

llvm-svn: 285855
2016-11-02 20:34:10 +00:00
Pavel Labath 6b91e405e3 Use the right dwarf attributes for parsing location list entries (fixup for r285441)
Note that the parsing code here is still incorrect wrt. the new draft of the
dwarf 5 spec (seconds arguments to DW_LLE_startx_length should be uleb128, not
u32). Once we have compilers actually emitting dwarf conformant with the new
spec, we'll need to revisit this and figure out the proper behavior there.

This should unbreak the linux bot.

llvm-svn: 285562
2016-10-31 11:53:13 +00:00
Adrian Prantl e704506c93 Rename DWARF 5 constants to adapt to change in LLVM
llvm-svn: 285441
2016-10-28 20:11:27 +00:00
Sean Callanan 8f04805c9f Remove a stray dump().
<rdar://problem/28635530>

llvm-svn: 283604
2016-10-07 21:25:29 +00:00
Zachary Turner a01bccdbe6 Convert some more aliasing and CI functions to StringRef.
llvm-svn: 283386
2016-10-05 21:14:56 +00:00
Chris Bieneman e3e6474824 [CMake] LLDB/Expression needs to depend on intrinsics_gen
IRExecutionUnit.h includes Module.h, which through a long chain of includes eventually includes Attributes.gen.

This fixes a build issue reported to lldb-dev by Hal. Thanks Hal!

llvm-svn: 282803
2016-09-29 22:55:09 +00:00
Sean Callanan 5deb06eb43 Added a setting that enables saving all .o files from a given JIT expression.
This allows debugging of the JIT and other analyses of the internals of the
expression parser.  I've also added a testcase that verifies that the setting
works correctly when off and on.

llvm-svn: 282434
2016-09-26 20:18:51 +00:00
Zachary Turner 514d8cd83e Update the prompt related functions to use StringRefs.
llvm-svn: 282269
2016-09-23 18:06:53 +00:00
Sean Callanan aa4b44c662 Replaced two instances of std::function with auto.
Thanks to Zachary Turner for the suggestion.  It's distasteful that the actual
type of the lambda can't be spelled out, but it should be evident from the
definition of the lambda body.

llvm-svn: 281536
2016-09-14 20:58:31 +00:00
Sean Callanan 807ee2ff69 Cleaned up some of the "frame diagnose" code to use Operands as currency.
Also added some utility functions around Operands to make code easier and more
compact to write.

llvm-svn: 281398
2016-09-13 21:18:27 +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