Commit Graph

92 Commits

Author SHA1 Message Date
Greg Clayton 32c940de37 Now that there are no cycles that cause leaks in the disassembler/instruction classes, we can get rid of the FIXME lines that were working around this issue.
<rdar://problem/26684190>

llvm-svn: 272071
2016-06-07 23:19:00 +00:00
Jason Molenda 583b1a8a1b Consolidate the knowledge of what arm cores are always executing
in thumb mode into one method in ArchSpec, replace checks for
specific cores in the disassembler with calls to this.  Also call
this from the arm instruction emulation code.

The determination of whether a given ArchSpec is thumb-only is still
a bit of a hack, but at least the hack is consolidated into a single
place.  In my original version of this patch http://reviews.llvm.org/D13578
I was calling into llvm's feature arm feature tables to make this
determination, like

#include "llvm/Support/TargetRegistry.h"
#include "llvm/MC/MCSubtargetInfo.h"
#include "llvm/../../lib/Target/ARM/ARMGenRegisterInfo.inc"
#include "llvm/../../lib/Target/ARM/ARMFeatures.h"

[...]

        std::string triple (GetTriple().getTriple());
        const char *cpu = "";
        const char *features_str = "";
        const llvm::Target *curr_target = llvm::TargetRegistry::lookupTarget(triple.c_str(), Error);
        std::unique_ptr<llvm::MCSubtargetInfo> subtarget_info_up (curr_target->createMCSubtargetInfo(triple.c_str(), cpu, features_str));
        if (subtarget_info_up->getFeatureBits()[llvm::ARM::FeatureNoARM])
        {
            return true;
        }

but those tables are post-llvm-build generated and linking against them
for all of our different build system methods was a big hiccup that I
haven't had time to revisit convincingly.

I'll keep that reviews.llvm.org patch around to remind myself that I
need to take another run at linking against the necessary tables 
again in llvm.

<rdar://problem/23022803> 

llvm-svn: 265377
2016-04-05 05:01:30 +00:00
Zachary Turner 190fadcdb2 Unicode support on Win32.
Win32 API calls that are Unicode aware require wide character
strings, but LLDB uses UTF8 everywhere.  This patch does conversions
wherever necessary when passing strings into and out of Win32 API
calls.

Patch by Cameron
Differential Revision: http://reviews.llvm.org/D17107
Reviewed By: zturner, amccarth

llvm-svn: 264074
2016-03-22 17:58:09 +00:00
Jim Ingham 9d9b46bf74 Remove unnecessary <limits> includes.
llvm-svn: 263588
2016-03-15 21:11:02 +00:00
Jim Ingham 190636bcc1 Let's not convert from UINT32_MAX to the std::numeric_limits version.
llvm-svn: 263333
2016-03-12 03:33:36 +00:00
Eugene Zelenko 34ede34acd Fix Clang-tidy modernize-use-nullptr warnings in some files in source/Core; other minor fixes.
llvm-svn: 262570
2016-03-03 00:51:40 +00:00
Bhushan D. Attarde 7f3daeda9a [MIPS] Avoid breakpoint in delay slot
SUMMARY:
    This patch implements Target::GetBreakableLoadAddress() method that takes an address
    and checks for any reason there is a better address than this to put a breakpoint on.
    If there is then return that address.
    MIPS uses this method to avoid breakpoint in delay slot.
    
    Reviewers: clayborg, jingham
    Subscribers: jingham, mohit.bhakkad, sagar, jaydeep, nitesh.jain, lldb-commits
    Differential Revision: http://http://reviews.llvm.org/D12184

llvm-svn: 246015
2015-08-26 06:04:54 +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
Jason Molenda 6d9fe8c156 The llvm Triple for an armv6m now comes back as llvm::Triple::thumb.
This was breaking disassembly for arm machines that we force to be
thumb mode all the time because we were only checking for llvm::Triple::arm.
i.e.

armv6m (ARM Cortex-M0)
armv7m (ARM Cortex-M3)
armv7em (ARM Cortex-M4)

<rdar://problem/22334522>

llvm-svn: 245645
2015-08-21 00:13:37 +00:00
Greg Clayton 358cf1ea30 Resubmitting 240466 after fixing the linux test suite failures.
A few extras were fixed

- Symbol::GetAddress() now returns an Address object, not a reference. There were places where people were accessing the address of a symbol when the symbol's value wasn't an address symbol. On MacOSX, undefined symbols have a value zero and some places where using the symbol's address and getting an absolute address of zero (since an Address object with no section and an m_offset whose value isn't LLDB_INVALID_ADDRESS is considered an absolute address). So fixing this required some changes to make sure people were getting what they expected. 
- Since some places want to access the address as a reference, I added a few new functions to symbol:
    Address &Symbol::GetAddressRef();
    const Address &Symbol::GetAddressRef() const;

Linux test suite passes just fine now.

<rdar://problem/21494354>

llvm-svn: 240702
2015-06-25 21:46:34 +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
Ted Woodward e76e7e9369 Add Hexagon packet support to ThreadPlanStepRange
Summary:
Hexagon is a VLIW processor. It can execute multiple instructions at once, called a packet. Breakpoints need to be alone in a packet. This patch will make sure that temporary breakpoints used for stepping are set at the start of a packet, which will put the breakpoint in a packet by itself.

Patch by Deepak Panickal of CodePlay and Ted Woodward of Qualcomm.

Reviewers: deepak2427, clayborg

Reviewed By: clayborg

Subscribers: lldb-commits

Differential Revision: http://reviews.llvm.org/D9437

llvm-svn: 237047
2015-05-11 21:12:33 +00:00
Pavel Labath c95f7e2a7c Refactor OptionValue::SetValueFromCString to use llvm::StringRef
Reviewers: clayborg

Subscribers: lldb-commits

Differential Revision: http://reviews.llvm.org/D7676

llvm-svn: 230005
2015-02-20 11:14:59 +00:00
Jason Molenda c980fa92eb Change the default disassembly format again. First attempt at
changing it was in r219544 - after living on that for a few 
months, I wanted to take another crack at this.

The disassembly-format setting still exists and the old format
can be user specified with a setting like

${current-pc-arrow}${addr-file-or-load}{ <${function.name-without-args}${function.concrete-only-addr-offset-no-padding}>}: 

This patch was discussed in http://reviews.llvm.org/D7578

<rdar://problem/19726421>

llvm-svn: 229186
2015-02-13 23:24:21 +00:00
Jason Molenda 75452e8c5c When creating a disassembler for one of the arm variants that can
only execute thumb instructions, force the arch triple string to
be "thumbv..." instead of "armv..." so we do the right thing by
default when disassembling arbitrary chunks of code.
<rdar://problem/15126397> 

llvm-svn: 228486
2015-02-07 06:03:49 +00:00
Greg Clayton 554f68d385 Get rid of Debugger::FormatPrompt() and replace it with the new FormatEntity class.
Why? Debugger::FormatPrompt() would run through the format prompt every time and parse it and emit it piece by piece. It also did formatting differently depending on which key/value pair it was parsing. 

The new code improves on this with the following features:
1 - Allow format strings to be parsed into a FormatEntity::Entry which can contain multiple child FormatEntity::Entry objects. This FormatEntity::Entry is a parsed version of what was previously always done in Debugger::FormatPrompt() so it is more efficient to emit formatted strings using the new parsed FormatEntity::Entry.
2 - Allows errors in format strings to be shown immediately when setting the settings (frame-format, thread-format, disassembly-format
3 - Allows auto completion by implementing a new OptionValueFormatEntity and switching frame-format, thread-format, and disassembly-format settings over to using it.
4 - The FormatEntity::Entry for each of the frame-format, thread-format, disassembly-format settings only replaces the old one if the format parses correctly
5 - Combines all consecutive string values together for efficient output. This means all "${ansi.*}" keys and all desensitized characters like "\n" "\t" "\0721" "\x23" will get combined with their previous strings
6 - ${*.script:} (like "${var.script:mymodule.my_var_function}") have all been switched over to use ${script.*:} "${script.var:mymodule.my_var_function}") to make the format easier to parse as I don't believe anyone was using these format string power user features.
7 - All key values pairs are defined in simple C arrays of entries so it is much easier to add new entries.

These changes pave the way for subsequent modifications where we can modify formats to do more (like control the width of value strings can do more and add more functionality more easily like string formatting to control the width, printf formats and more).

llvm-svn: 228207
2015-02-04 22:00:53 +00:00
Jason Molenda aff1b357b0 Add a new disassembly-format specification so that the disassembler
output style can be customized.  Change the built-in default to be
more similar to gdb's disassembly formatting.

The disassembly-format for a gdb-like output is

${addr-file-or-load} <${function.name-without-args}${function.concrete-only-addr-offset-no-padding}>: 

The disassembly-format for the lldb style output is

{${function.initial-function}{${module.file.basename}`}{${function.name-without-args}}:\n}{${function.changed}\n{${module.file.basename}`}{${function.name-without-args}}:\n}{${current-pc-arrow} }{${addr-file-or-load}}: 

The two backticks in the lldb style formatter triggers the sub-expression evaluation in
CommandInterpreter::PreprocessCommand() so you can't use that one as-is ... changing to
use ' characters instead of ` would work around that.

<rdar://problem/9885398> 

llvm-svn: 219544
2014-10-10 23:07:36 +00:00
Greg Clayton 44d937820b Merging the iohandler branch back into main.
The many many benefits include:
1 - Input/Output/Error streams are now handled as real streams not a push style input
2 - auto completion in python embedded interpreter
3 - multi-line input for "script" and "expression" commands now allow you to edit previous/next lines using up and down arrow keys and this makes multi-line input actually a viable thing to use
4 - it is now possible to use curses to drive LLDB (please try the "gui" command)

We will need to deal with and fix any buildbot failures and tests and arise now that input/output and error are correctly hooked up in all cases.

llvm-svn: 200263
2014-01-27 23:43:24 +00:00
Ed Maste 90359963ab Handle endianness in the Opcode class
Previously, an opcode set via SetOpcode32 (for example) was later
extracted via GetData() as a byte sequence in host order rather than
target order.

Review: http://llvm-reviews.chandlerc.com/D1838
llvm-svn: 196808
2013-12-09 19:45:33 +00:00
Greg Clayton d5944cd118 For logical backtrace work, lldb needs to track Module unloads etc & symoblicate an address based on a point in time
<rdar://problem/15314403> 

This patch adds a new lldb_private::SectionLoadHistory class that tracks what shared libraries were loaded given a process stop ID. This allows us to keep a history of the sections that were loaded for a time T. Many items in history objects will rely upon the process stop ID in the future.

llvm-svn: 196557
2013-12-06 01:12:00 +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
Ed Maste d616c97a81 Update comment (MIPS also has 32-bit opcodes)
llvm-svn: 192388
2013-10-10 19:17:07 +00:00
Jason Molenda 6b3e6d5487 Disassembler::DisassembleRange() currently calls Target::ReadMemory
with prefer_file_cache == false.  This is what we want to do when
the user is doing a disassemble command -- show the actual memory
contents in case the memory has been corrupted or something -- but
when we're profiling functions for stepping or unwinding
(ThreadPlanStepRange::GetInstructionsForAddress,
UnwindAssemblyInstEmulation::GetNonCallSiteUnwindP) we can read
__TEXT instructions directly out of the file, if it exists.
<rdar://problem/14397491> 

llvm-svn: 190638
2013-09-12 23:23:35 +00:00
Jim Ingham 56d404281f The DisassemblerLLVMC has a retain cycle - the InstructionLLVMC's contained in its instruction
list have a shared pointer back to their DisassemblerLLVMC.  This checkin force clears the InstructionList
in all the places we use the DisassemblerSP to stop the leaking for now.  I'll go back and fix this
for real when I have time to do so.

<rdar://problem/14581918>

llvm-svn: 187473
2013-07-31 02:19:15 +00:00