forked from OSchip/llvm-project
709 lines
30 KiB
C++
709 lines
30 KiB
C++
//===-- CommandObjectFrame.cpp ----------------------------------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#include "CommandObjectFrame.h"
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// C Includes
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// C++ Includes
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#include <string>
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// Other libraries and framework includes
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// Project includes
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#include "lldb/Breakpoint/Watchpoint.h"
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#include "lldb/Core/DataVisualization.h"
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#include "lldb/Core/Debugger.h"
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#include "lldb/Core/Module.h"
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#include "lldb/Core/StreamFile.h"
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#include "lldb/Core/StreamString.h"
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#include "lldb/Core/Timer.h"
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#include "lldb/Core/Value.h"
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#include "lldb/Core/ValueObject.h"
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#include "lldb/Core/ValueObjectVariable.h"
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#include "lldb/Host/Host.h"
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#include "lldb/Interpreter/Args.h"
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#include "lldb/Interpreter/CommandInterpreter.h"
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#include "lldb/Interpreter/CommandReturnObject.h"
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#include "lldb/Interpreter/Options.h"
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#include "lldb/Interpreter/OptionGroupFormat.h"
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#include "lldb/Interpreter/OptionGroupValueObjectDisplay.h"
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#include "lldb/Interpreter/OptionGroupVariable.h"
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#include "lldb/Interpreter/OptionGroupWatchpoint.h"
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#include "lldb/Symbol/ClangASTType.h"
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#include "lldb/Symbol/ClangASTContext.h"
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#include "lldb/Symbol/ObjectFile.h"
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#include "lldb/Symbol/SymbolContext.h"
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#include "lldb/Symbol/Type.h"
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#include "lldb/Symbol/Variable.h"
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#include "lldb/Symbol/VariableList.h"
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#include "lldb/Target/Process.h"
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#include "lldb/Target/StackFrame.h"
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#include "lldb/Target/Thread.h"
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#include "lldb/Target/Target.h"
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using namespace lldb;
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using namespace lldb_private;
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#pragma mark CommandObjectFrameInfo
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//-------------------------------------------------------------------------
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// CommandObjectFrameInfo
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//-------------------------------------------------------------------------
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class CommandObjectFrameInfo : public CommandObject
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{
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public:
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CommandObjectFrameInfo (CommandInterpreter &interpreter) :
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CommandObject (interpreter,
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"frame info",
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"List information about the currently selected frame in the current thread.",
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"frame info",
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eFlagProcessMustBeLaunched | eFlagProcessMustBePaused)
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{
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}
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~CommandObjectFrameInfo ()
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{
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}
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bool
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Execute (Args& command,
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CommandReturnObject &result)
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{
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ExecutionContext exe_ctx(m_interpreter.GetExecutionContext());
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StackFrame *frame = exe_ctx.GetFramePtr();
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if (frame)
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{
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frame->DumpUsingSettingsFormat (&result.GetOutputStream());
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result.SetStatus (eReturnStatusSuccessFinishResult);
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}
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else
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{
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result.AppendError ("no current frame");
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result.SetStatus (eReturnStatusFailed);
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}
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return result.Succeeded();
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}
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};
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#pragma mark CommandObjectFrameSelect
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//-------------------------------------------------------------------------
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// CommandObjectFrameSelect
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//-------------------------------------------------------------------------
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class CommandObjectFrameSelect : public CommandObject
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{
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public:
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class CommandOptions : public Options
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{
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public:
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CommandOptions (CommandInterpreter &interpreter) :
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Options(interpreter)
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{
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OptionParsingStarting ();
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}
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virtual
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~CommandOptions ()
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{
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}
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virtual Error
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SetOptionValue (uint32_t option_idx, const char *option_arg)
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{
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Error error;
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bool success = false;
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char short_option = (char) m_getopt_table[option_idx].val;
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switch (short_option)
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{
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case 'r':
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relative_frame_offset = Args::StringToSInt32 (option_arg, INT32_MIN, 0, &success);
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if (!success)
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error.SetErrorStringWithFormat ("invalid frame offset argument '%s'", option_arg);
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break;
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default:
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error.SetErrorStringWithFormat ("invalid short option character '%c'", short_option);
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break;
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}
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return error;
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}
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void
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OptionParsingStarting ()
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{
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relative_frame_offset = INT32_MIN;
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}
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const OptionDefinition*
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GetDefinitions ()
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{
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return g_option_table;
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}
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// Options table: Required for subclasses of Options.
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static OptionDefinition g_option_table[];
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int32_t relative_frame_offset;
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};
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CommandObjectFrameSelect (CommandInterpreter &interpreter) :
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CommandObject (interpreter,
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"frame select",
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"Select a frame by index from within the current thread and make it the current frame.",
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NULL,
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eFlagProcessMustBeLaunched | eFlagProcessMustBePaused),
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m_options (interpreter)
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{
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CommandArgumentEntry arg;
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CommandArgumentData index_arg;
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// Define the first (and only) variant of this arg.
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index_arg.arg_type = eArgTypeFrameIndex;
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index_arg.arg_repetition = eArgRepeatOptional;
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// There is only one variant this argument could be; put it into the argument entry.
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arg.push_back (index_arg);
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// Push the data for the first argument into the m_arguments vector.
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m_arguments.push_back (arg);
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}
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~CommandObjectFrameSelect ()
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{
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}
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virtual
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Options *
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GetOptions ()
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{
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return &m_options;
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}
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bool
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Execute (Args& command,
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CommandReturnObject &result)
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{
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ExecutionContext exe_ctx (m_interpreter.GetExecutionContext());
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Thread *thread = exe_ctx.GetThreadPtr();
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if (thread)
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{
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const uint32_t num_frames = thread->GetStackFrameCount();
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uint32_t frame_idx = UINT32_MAX;
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if (m_options.relative_frame_offset != INT32_MIN)
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{
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// The one and only argument is a signed relative frame index
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frame_idx = thread->GetSelectedFrameIndex ();
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if (frame_idx == UINT32_MAX)
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frame_idx = 0;
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if (m_options.relative_frame_offset < 0)
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{
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if (frame_idx >= -m_options.relative_frame_offset)
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frame_idx += m_options.relative_frame_offset;
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else
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{
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if (frame_idx == 0)
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{
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//If you are already at the bottom of the stack, then just warn and don't reset the frame.
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result.AppendError("Already at the bottom of the stack");
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result.SetStatus(eReturnStatusFailed);
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return false;
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}
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else
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frame_idx = 0;
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}
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}
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else if (m_options.relative_frame_offset > 0)
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{
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if (num_frames - frame_idx > m_options.relative_frame_offset)
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frame_idx += m_options.relative_frame_offset;
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else
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{
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if (frame_idx == num_frames - 1)
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{
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//If we are already at the top of the stack, just warn and don't reset the frame.
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result.AppendError("Already at the top of the stack");
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result.SetStatus(eReturnStatusFailed);
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return false;
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}
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else
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frame_idx = num_frames - 1;
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}
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}
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}
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else
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{
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if (command.GetArgumentCount() == 1)
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{
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const char *frame_idx_cstr = command.GetArgumentAtIndex(0);
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frame_idx = Args::StringToUInt32 (frame_idx_cstr, UINT32_MAX, 0);
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}
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else if (command.GetArgumentCount() == 0)
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{
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frame_idx = thread->GetSelectedFrameIndex ();
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if (frame_idx == UINT32_MAX)
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{
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frame_idx = 0;
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}
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}
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else
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{
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result.AppendError ("invalid arguments.\n");
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m_options.GenerateOptionUsage (result.GetErrorStream(), this);
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}
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}
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if (frame_idx < num_frames)
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{
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thread->SetSelectedFrameByIndex (frame_idx);
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exe_ctx.SetFrameSP(thread->GetSelectedFrame ());
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StackFrame *frame = exe_ctx.GetFramePtr();
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if (frame)
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{
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bool already_shown = false;
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SymbolContext frame_sc(frame->GetSymbolContext(eSymbolContextLineEntry));
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if (m_interpreter.GetDebugger().GetUseExternalEditor() && frame_sc.line_entry.file && frame_sc.line_entry.line != 0)
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{
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already_shown = Host::OpenFileInExternalEditor (frame_sc.line_entry.file, frame_sc.line_entry.line);
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}
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bool show_frame_info = true;
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bool show_source = !already_shown;
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uint32_t source_lines_before = 3;
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uint32_t source_lines_after = 3;
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if (frame->GetStatus (result.GetOutputStream(),
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show_frame_info,
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show_source,
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source_lines_before,
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source_lines_after))
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{
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result.SetStatus (eReturnStatusSuccessFinishResult);
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return result.Succeeded();
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}
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}
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}
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result.AppendErrorWithFormat ("Frame index (%u) out of range.\n", frame_idx);
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}
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else
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{
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result.AppendError ("no current thread");
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}
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result.SetStatus (eReturnStatusFailed);
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return false;
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}
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protected:
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CommandOptions m_options;
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};
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OptionDefinition
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CommandObjectFrameSelect::CommandOptions::g_option_table[] =
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{
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{ LLDB_OPT_SET_1, false, "relative", 'r', required_argument, NULL, 0, eArgTypeOffset, "A relative frame index offset from the current frame index."},
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{ 0, false, NULL, 0, 0, NULL, NULL, eArgTypeNone, NULL }
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};
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#pragma mark CommandObjectFrameVariable
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//----------------------------------------------------------------------
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// List images with associated information
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//----------------------------------------------------------------------
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class CommandObjectFrameVariable : public CommandObject
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{
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public:
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CommandObjectFrameVariable (CommandInterpreter &interpreter) :
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CommandObject (interpreter,
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"frame variable",
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"Show frame variables. All argument and local variables "
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"that are in scope will be shown when no arguments are given. "
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"If any arguments are specified, they can be names of "
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"argument, local, file static and file global variables. "
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"Children of aggregate variables can be specified such as "
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"'var->child.x'. "
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"You can choose to watch a variable with the '-w' option. "
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"Note that hardware resources for watching are often limited.",
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NULL,
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eFlagProcessMustBeLaunched | eFlagProcessMustBePaused),
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m_option_group (interpreter),
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m_option_variable(true), // Include the frame specific options by passing "true"
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m_option_format (eFormatDefault),
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m_option_watchpoint(),
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m_varobj_options()
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{
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CommandArgumentEntry arg;
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CommandArgumentData var_name_arg;
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// Define the first (and only) variant of this arg.
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var_name_arg.arg_type = eArgTypeVarName;
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var_name_arg.arg_repetition = eArgRepeatStar;
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// There is only one variant this argument could be; put it into the argument entry.
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arg.push_back (var_name_arg);
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// Push the data for the first argument into the m_arguments vector.
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m_arguments.push_back (arg);
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m_option_group.Append (&m_option_variable, LLDB_OPT_SET_ALL, LLDB_OPT_SET_1);
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m_option_group.Append (&m_option_format, OptionGroupFormat::OPTION_GROUP_FORMAT, LLDB_OPT_SET_1);
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m_option_group.Append (&m_option_watchpoint, LLDB_OPT_SET_ALL, LLDB_OPT_SET_1);
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m_option_group.Append (&m_varobj_options, LLDB_OPT_SET_ALL, LLDB_OPT_SET_1);
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m_option_group.Finalize();
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}
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virtual
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~CommandObjectFrameVariable ()
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{
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}
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virtual
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Options *
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GetOptions ()
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{
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return &m_option_group;
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}
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virtual bool
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Execute
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(
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Args& command,
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CommandReturnObject &result
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)
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{
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ExecutionContext exe_ctx(m_interpreter.GetExecutionContext());
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StackFrame *frame = exe_ctx.GetFramePtr();
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if (frame == NULL)
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{
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result.AppendError ("you must be stopped in a valid stack frame to view frame variables.");
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result.SetStatus (eReturnStatusFailed);
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return false;
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}
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Stream &s = result.GetOutputStream();
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bool get_file_globals = true;
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// Be careful about the stack frame, if any summary formatter runs code, it might clear the StackFrameList
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// for the thread. So hold onto a shared pointer to the frame so it stays alive.
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VariableList *variable_list = frame->GetVariableList (get_file_globals);
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VariableSP var_sp;
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ValueObjectSP valobj_sp;
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const char *name_cstr = NULL;
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size_t idx;
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SummaryFormatSP summary_format_sp;
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if (!m_option_variable.summary.empty())
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DataVisualization::NamedSummaryFormats::GetSummaryFormat(ConstString(m_option_variable.summary.c_str()), summary_format_sp);
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ValueObject::DumpValueObjectOptions options;
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options.SetPointerDepth(m_varobj_options.ptr_depth)
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.SetMaximumDepth(m_varobj_options.max_depth)
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.SetShowTypes(m_varobj_options.show_types)
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.SetShowLocation(m_varobj_options.show_location)
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.SetUseObjectiveC(m_varobj_options.use_objc)
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.SetUseDynamicType(m_varobj_options.use_dynamic)
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.SetUseSyntheticValue((lldb::SyntheticValueType)m_varobj_options.use_synth)
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.SetFlatOutput(m_varobj_options.flat_output)
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.SetOmitSummaryDepth(m_varobj_options.no_summary_depth)
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.SetIgnoreCap(m_varobj_options.ignore_cap);
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if (m_varobj_options.be_raw)
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options.SetRawDisplay(true);
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if (variable_list)
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{
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// If watching a variable, there are certain restrictions to be followed.
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if (m_option_watchpoint.watch_variable)
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{
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if (command.GetArgumentCount() != 1) {
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result.GetErrorStream().Printf("error: specify exactly one variable when using the '-w' option\n");
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result.SetStatus(eReturnStatusFailed);
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return false;
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} else if (m_option_variable.use_regex) {
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result.GetErrorStream().Printf("error: specify your variable name exactly (no regex) when using the '-w' option\n");
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result.SetStatus(eReturnStatusFailed);
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return false;
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}
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// Things have checked out ok...
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// m_option_watchpoint.watch_type specifies the type of watching.
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}
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const Format format = m_option_format.GetFormat();
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if (command.GetArgumentCount() > 0)
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{
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VariableList regex_var_list;
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// If we have any args to the variable command, we will make
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// variable objects from them...
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for (idx = 0; (name_cstr = command.GetArgumentAtIndex(idx)) != NULL; ++idx)
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{
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if (m_option_variable.use_regex)
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{
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const uint32_t regex_start_index = regex_var_list.GetSize();
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RegularExpression regex (name_cstr);
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if (regex.Compile(name_cstr))
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{
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size_t num_matches = 0;
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const size_t num_new_regex_vars = variable_list->AppendVariablesIfUnique(regex,
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regex_var_list,
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num_matches);
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if (num_new_regex_vars > 0)
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{
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for (uint32_t regex_idx = regex_start_index, end_index = regex_var_list.GetSize();
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regex_idx < end_index;
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++regex_idx)
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{
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var_sp = regex_var_list.GetVariableAtIndex (regex_idx);
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if (var_sp)
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{
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valobj_sp = frame->GetValueObjectForFrameVariable (var_sp, m_varobj_options.use_dynamic);
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if (valobj_sp)
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{
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if (format != eFormatDefault)
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valobj_sp->SetFormat (format);
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if (m_option_variable.show_decl && var_sp->GetDeclaration ().GetFile())
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{
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bool show_fullpaths = false;
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bool show_module = true;
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if (var_sp->DumpDeclaration(&s, show_fullpaths, show_module))
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s.PutCString (": ");
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}
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if (summary_format_sp)
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valobj_sp->SetCustomSummaryFormat(summary_format_sp);
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ValueObject::DumpValueObject (result.GetOutputStream(),
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valobj_sp.get(),
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options);
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}
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}
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}
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}
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else if (num_matches == 0)
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{
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result.GetErrorStream().Printf ("error: no variables matched the regular expression '%s'.\n", name_cstr);
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}
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}
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else
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{
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char regex_error[1024];
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if (regex.GetErrorAsCString(regex_error, sizeof(regex_error)))
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result.GetErrorStream().Printf ("error: %s\n", regex_error);
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else
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result.GetErrorStream().Printf ("error: unkown regex error when compiling '%s'\n", name_cstr);
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}
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}
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else // No regex, either exact variable names or variable expressions.
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{
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Error error;
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uint32_t expr_path_options = StackFrame::eExpressionPathOptionCheckPtrVsMember;
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lldb::VariableSP var_sp;
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valobj_sp = frame->GetValueForVariableExpressionPath (name_cstr,
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m_varobj_options.use_dynamic,
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expr_path_options,
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var_sp,
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error);
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if (valobj_sp)
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{
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if (format != eFormatDefault)
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valobj_sp->SetFormat (format);
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if (m_option_variable.show_decl && var_sp && var_sp->GetDeclaration ().GetFile())
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{
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var_sp->GetDeclaration ().DumpStopContext (&s, false);
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s.PutCString (": ");
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}
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if (summary_format_sp)
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|
valobj_sp->SetCustomSummaryFormat(summary_format_sp);
|
|
|
|
Stream &output_stream = result.GetOutputStream();
|
|
ValueObject::DumpValueObject (output_stream,
|
|
valobj_sp.get(),
|
|
valobj_sp->GetParent() ? name_cstr : NULL,
|
|
options);
|
|
// Process watchpoint if necessary.
|
|
if (m_option_watchpoint.watch_variable)
|
|
{
|
|
AddressType addr_type;
|
|
lldb::addr_t addr = 0;
|
|
size_t size = 0;
|
|
if (m_option_watchpoint.watch_size == 0) {
|
|
addr = valobj_sp->GetAddressOf(false, &addr_type);
|
|
if (addr_type == eAddressTypeLoad) {
|
|
// We're in business.
|
|
// Find out the size of this variable.
|
|
size = valobj_sp->GetByteSize();
|
|
}
|
|
} else {
|
|
// The '-xsize'/'-x' option means to treat the value object as
|
|
// a pointer and to watch the pointee with the specified size.
|
|
addr = valobj_sp->GetValueAsUnsigned(0);
|
|
size = m_option_watchpoint.watch_size;
|
|
}
|
|
uint32_t watch_type = m_option_watchpoint.watch_type;
|
|
Watchpoint *wp = exe_ctx.GetTargetRef().CreateWatchpoint(addr, size, watch_type).get();
|
|
if (wp)
|
|
{
|
|
if (var_sp && var_sp->GetDeclaration().GetFile())
|
|
{
|
|
StreamString ss;
|
|
// True to show fullpath for declaration file.
|
|
var_sp->GetDeclaration().DumpStopContext(&ss, true);
|
|
wp->SetDeclInfo(ss.GetString());
|
|
}
|
|
StreamString ss;
|
|
output_stream.Printf("Watchpoint created: ");
|
|
wp->GetDescription(&output_stream, lldb::eDescriptionLevelFull);
|
|
output_stream.EOL();
|
|
result.SetStatus(eReturnStatusSuccessFinishResult);
|
|
}
|
|
else
|
|
{
|
|
result.AppendErrorWithFormat("Watchpoint creation failed.\n");
|
|
result.SetStatus(eReturnStatusFailed);
|
|
}
|
|
return (wp != NULL);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
const char *error_cstr = error.AsCString(NULL);
|
|
if (error_cstr)
|
|
result.GetErrorStream().Printf("error: %s\n", error_cstr);
|
|
else
|
|
result.GetErrorStream().Printf ("error: unable to find any variable expression path that matches '%s'\n", name_cstr);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
else // No command arg specified. Use variable_list, instead.
|
|
{
|
|
const uint32_t num_variables = variable_list->GetSize();
|
|
if (num_variables > 0)
|
|
{
|
|
for (uint32_t i=0; i<num_variables; i++)
|
|
{
|
|
var_sp = variable_list->GetVariableAtIndex(i);
|
|
bool dump_variable = true;
|
|
switch (var_sp->GetScope())
|
|
{
|
|
case eValueTypeVariableGlobal:
|
|
dump_variable = m_option_variable.show_globals;
|
|
if (dump_variable && m_option_variable.show_scope)
|
|
s.PutCString("GLOBAL: ");
|
|
break;
|
|
|
|
case eValueTypeVariableStatic:
|
|
dump_variable = m_option_variable.show_globals;
|
|
if (dump_variable && m_option_variable.show_scope)
|
|
s.PutCString("STATIC: ");
|
|
break;
|
|
|
|
case eValueTypeVariableArgument:
|
|
dump_variable = m_option_variable.show_args;
|
|
if (dump_variable && m_option_variable.show_scope)
|
|
s.PutCString(" ARG: ");
|
|
break;
|
|
|
|
case eValueTypeVariableLocal:
|
|
dump_variable = m_option_variable.show_locals;
|
|
if (dump_variable && m_option_variable.show_scope)
|
|
s.PutCString(" LOCAL: ");
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
|
|
if (dump_variable)
|
|
{
|
|
// Use the variable object code to make sure we are
|
|
// using the same APIs as the the public API will be
|
|
// using...
|
|
valobj_sp = frame->GetValueObjectForFrameVariable (var_sp,
|
|
m_varobj_options.use_dynamic);
|
|
if (valobj_sp)
|
|
{
|
|
if (format != eFormatDefault)
|
|
valobj_sp->SetFormat (format);
|
|
|
|
// When dumping all variables, don't print any variables
|
|
// that are not in scope to avoid extra unneeded output
|
|
if (valobj_sp->IsInScope ())
|
|
{
|
|
if (m_option_variable.show_decl && var_sp->GetDeclaration ().GetFile())
|
|
{
|
|
var_sp->GetDeclaration ().DumpStopContext (&s, false);
|
|
s.PutCString (": ");
|
|
}
|
|
if (summary_format_sp)
|
|
valobj_sp->SetCustomSummaryFormat(summary_format_sp);
|
|
ValueObject::DumpValueObject (result.GetOutputStream(),
|
|
valobj_sp.get(),
|
|
name_cstr,
|
|
options);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
result.SetStatus (eReturnStatusSuccessFinishResult);
|
|
}
|
|
|
|
if (m_interpreter.TruncationWarningNecessary())
|
|
{
|
|
result.GetOutputStream().Printf(m_interpreter.TruncationWarningText(),
|
|
m_cmd_name.c_str());
|
|
m_interpreter.TruncationWarningGiven();
|
|
}
|
|
|
|
return result.Succeeded();
|
|
}
|
|
protected:
|
|
|
|
OptionGroupOptions m_option_group;
|
|
OptionGroupVariable m_option_variable;
|
|
OptionGroupFormat m_option_format;
|
|
OptionGroupWatchpoint m_option_watchpoint;
|
|
OptionGroupValueObjectDisplay m_varobj_options;
|
|
};
|
|
|
|
|
|
#pragma mark CommandObjectMultiwordFrame
|
|
|
|
//-------------------------------------------------------------------------
|
|
// CommandObjectMultiwordFrame
|
|
//-------------------------------------------------------------------------
|
|
|
|
CommandObjectMultiwordFrame::CommandObjectMultiwordFrame (CommandInterpreter &interpreter) :
|
|
CommandObjectMultiword (interpreter,
|
|
"frame",
|
|
"A set of commands for operating on the current thread's frames.",
|
|
"frame <subcommand> [<subcommand-options>]")
|
|
{
|
|
LoadSubCommand ("info", CommandObjectSP (new CommandObjectFrameInfo (interpreter)));
|
|
LoadSubCommand ("select", CommandObjectSP (new CommandObjectFrameSelect (interpreter)));
|
|
LoadSubCommand ("variable", CommandObjectSP (new CommandObjectFrameVariable (interpreter)));
|
|
}
|
|
|
|
CommandObjectMultiwordFrame::~CommandObjectMultiwordFrame ()
|
|
{
|
|
}
|
|
|