forked from OSchip/llvm-project
1375 lines
49 KiB
C++
1375 lines
49 KiB
C++
//===-- CommandObjectWatchpoint.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 "lldb/lldb-python.h"
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#include "CommandObjectWatchpoint.h"
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#include "CommandObjectWatchpointCommand.h"
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// C Includes
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// C++ Includes
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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/Breakpoint/WatchpointList.h"
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#include "lldb/Core/StreamString.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/Interpreter/CommandInterpreter.h"
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#include "lldb/Interpreter/CommandReturnObject.h"
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#include "lldb/Interpreter/CommandCompletions.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/Target.h"
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#include <vector>
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using namespace lldb;
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using namespace lldb_private;
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static void
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AddWatchpointDescription(Stream *s, Watchpoint *wp, lldb::DescriptionLevel level)
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{
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s->IndentMore();
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wp->GetDescription(s, level);
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s->IndentLess();
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s->EOL();
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}
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static bool
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CheckTargetForWatchpointOperations(Target *target, CommandReturnObject &result)
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{
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if (target == NULL)
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{
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result.AppendError ("Invalid target. No existing target or watchpoints.");
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result.SetStatus (eReturnStatusFailed);
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return false;
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}
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bool process_is_valid = target->GetProcessSP() && target->GetProcessSP()->IsAlive();
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if (!process_is_valid)
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{
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result.AppendError ("Thre's no process or it is not alive.");
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result.SetStatus (eReturnStatusFailed);
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return false;
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}
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// Target passes our checks, return true.
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return true;
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}
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// FIXME: This doesn't seem to be the right place for this functionality.
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#include "llvm/ADT/StringRef.h"
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static inline void StripLeadingSpaces(llvm::StringRef &Str)
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{
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while (!Str.empty() && isspace(Str[0]))
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Str = Str.substr(1);
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}
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static inline llvm::StringRef StripOptionTerminator(llvm::StringRef &Str, bool with_dash_w, bool with_dash_x)
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{
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llvm::StringRef ExprStr = Str;
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// Get rid of the leading spaces first.
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StripLeadingSpaces(ExprStr);
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// If there's no '-w' and no '-x', we can just return.
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if (!with_dash_w && !with_dash_x)
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return ExprStr;
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// Otherwise, split on the "--" option terminator string, and return the rest of the string.
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ExprStr = ExprStr.split("--").second;
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StripLeadingSpaces(ExprStr);
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return ExprStr;
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}
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// Equivalent class: {"-", "to", "To", "TO"} of range specifier array.
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static const char* RSA[4] = { "-", "to", "To", "TO" };
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// Return the index to RSA if found; otherwise -1 is returned.
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static int32_t
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WithRSAIndex(llvm::StringRef &Arg)
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{
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uint32_t i;
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for (i = 0; i < 4; ++i)
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if (Arg.find(RSA[i]) != llvm::StringRef::npos)
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return i;
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return -1;
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}
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// Return true if wp_ids is successfully populated with the watch ids.
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// False otherwise.
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bool
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CommandObjectMultiwordWatchpoint::VerifyWatchpointIDs(Args &args, std::vector<uint32_t> &wp_ids)
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{
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// Pre-condition: args.GetArgumentCount() > 0.
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assert(args.GetArgumentCount() > 0);
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llvm::StringRef Minus("-");
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std::vector<llvm::StringRef> StrRefArgs;
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std::pair<llvm::StringRef, llvm::StringRef> Pair;
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size_t i;
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int32_t idx;
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// Go through the argments and make a canonical form of arg list containing
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// only numbers with possible "-" in between.
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for (i = 0; i < args.GetArgumentCount(); ++i) {
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llvm::StringRef Arg(args.GetArgumentAtIndex(i));
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if ((idx = WithRSAIndex(Arg)) == -1) {
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StrRefArgs.push_back(Arg);
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continue;
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}
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// The Arg contains the range specifier, split it, then.
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Pair = Arg.split(RSA[idx]);
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if (!Pair.first.empty())
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StrRefArgs.push_back(Pair.first);
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StrRefArgs.push_back(Minus);
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if (!Pair.second.empty())
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StrRefArgs.push_back(Pair.second);
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}
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// Now process the canonical list and fill in the vector of uint32_t's.
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// If there is any error, return false and the client should ignore wp_ids.
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uint32_t beg, end, id;
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size_t size = StrRefArgs.size();
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bool in_range = false;
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for (i = 0; i < size; ++i) {
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llvm::StringRef Arg = StrRefArgs[i];
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if (in_range) {
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// Look for the 'end' of the range. Note StringRef::getAsInteger()
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// returns true to signify error while parsing.
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if (Arg.getAsInteger(0, end))
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return false;
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// Found a range! Now append the elements.
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for (id = beg; id <= end; ++id)
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wp_ids.push_back(id);
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in_range = false;
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continue;
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}
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if (i < (size - 1) && StrRefArgs[i+1] == Minus) {
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if (Arg.getAsInteger(0, beg))
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return false;
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// Turn on the in_range flag, we are looking for end of range next.
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++i; in_range = true;
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continue;
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}
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// Otherwise, we have a simple ID. Just append it.
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if (Arg.getAsInteger(0, beg))
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return false;
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wp_ids.push_back(beg);
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}
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// It is an error if after the loop, we're still in_range.
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if (in_range)
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return false;
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return true; // Success!
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}
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//-------------------------------------------------------------------------
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// CommandObjectWatchpointList
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//-------------------------------------------------------------------------
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#pragma mark List
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class CommandObjectWatchpointList : public CommandObjectParsed
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{
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public:
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CommandObjectWatchpointList (CommandInterpreter &interpreter) :
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CommandObjectParsed (interpreter,
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"watchpoint list",
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"List all watchpoints at configurable levels of detail.",
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NULL),
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m_options(interpreter)
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{
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CommandArgumentEntry arg;
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CommandObject::AddIDsArgumentData(arg, eArgTypeWatchpointID, eArgTypeWatchpointIDRange);
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// Add the entry for the first argument for this command to the object's arguments vector.
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m_arguments.push_back(arg);
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}
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virtual
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~CommandObjectWatchpointList () {}
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virtual 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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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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m_level(lldb::eDescriptionLevelBrief) // Watchpoint List defaults to brief descriptions
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{
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}
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virtual
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~CommandOptions () {}
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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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const int short_option = m_getopt_table[option_idx].val;
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switch (short_option)
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{
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case 'b':
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m_level = lldb::eDescriptionLevelBrief;
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break;
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case 'f':
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m_level = lldb::eDescriptionLevelFull;
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break;
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case 'v':
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m_level = lldb::eDescriptionLevelVerbose;
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break;
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default:
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error.SetErrorStringWithFormat("unrecognized option '%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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m_level = lldb::eDescriptionLevelFull;
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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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// Instance variables to hold the values for command options.
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lldb::DescriptionLevel m_level;
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};
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protected:
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virtual bool
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DoExecute (Args& command, CommandReturnObject &result)
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{
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Target *target = m_interpreter.GetDebugger().GetSelectedTarget().get();
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if (target == NULL)
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{
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result.AppendError ("Invalid target. No current target or watchpoints.");
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result.SetStatus (eReturnStatusSuccessFinishNoResult);
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return true;
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}
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if (target->GetProcessSP() && target->GetProcessSP()->IsAlive())
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{
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uint32_t num_supported_hardware_watchpoints;
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Error error = target->GetProcessSP()->GetWatchpointSupportInfo(num_supported_hardware_watchpoints);
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if (error.Success())
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result.AppendMessageWithFormat("Number of supported hardware watchpoints: %u\n",
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num_supported_hardware_watchpoints);
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}
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const WatchpointList &watchpoints = target->GetWatchpointList();
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Mutex::Locker locker;
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target->GetWatchpointList().GetListMutex(locker);
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size_t num_watchpoints = watchpoints.GetSize();
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if (num_watchpoints == 0)
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{
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result.AppendMessage("No watchpoints currently set.");
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result.SetStatus(eReturnStatusSuccessFinishNoResult);
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return true;
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}
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Stream &output_stream = result.GetOutputStream();
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if (command.GetArgumentCount() == 0)
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{
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// No watchpoint selected; show info about all currently set watchpoints.
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result.AppendMessage ("Current watchpoints:");
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for (size_t i = 0; i < num_watchpoints; ++i)
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{
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Watchpoint *wp = watchpoints.GetByIndex(i).get();
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AddWatchpointDescription(&output_stream, wp, m_options.m_level);
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}
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result.SetStatus(eReturnStatusSuccessFinishNoResult);
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}
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else
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{
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// Particular watchpoints selected; enable them.
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std::vector<uint32_t> wp_ids;
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if (!CommandObjectMultiwordWatchpoint::VerifyWatchpointIDs(command, wp_ids))
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{
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result.AppendError("Invalid watchpoints specification.");
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result.SetStatus(eReturnStatusFailed);
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return false;
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}
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const size_t size = wp_ids.size();
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for (size_t i = 0; i < size; ++i)
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{
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Watchpoint *wp = watchpoints.FindByID(wp_ids[i]).get();
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if (wp)
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AddWatchpointDescription(&output_stream, wp, m_options.m_level);
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result.SetStatus(eReturnStatusSuccessFinishNoResult);
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}
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}
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return result.Succeeded();
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}
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private:
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CommandOptions m_options;
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};
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//-------------------------------------------------------------------------
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// CommandObjectWatchpointList::Options
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//-------------------------------------------------------------------------
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#pragma mark List::CommandOptions
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OptionDefinition
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CommandObjectWatchpointList::CommandOptions::g_option_table[] =
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{
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{ LLDB_OPT_SET_1, false, "brief", 'b', no_argument, NULL, 0, eArgTypeNone,
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"Give a brief description of the watchpoint (no location info)."},
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{ LLDB_OPT_SET_2, false, "full", 'f', no_argument, NULL, 0, eArgTypeNone,
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"Give a full description of the watchpoint and its locations."},
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{ LLDB_OPT_SET_3, false, "verbose", 'v', no_argument, NULL, 0, eArgTypeNone,
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"Explain everything we know about the watchpoint (for debugging debugger bugs)." },
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{ 0, false, NULL, 0, 0, NULL, 0, eArgTypeNone, NULL }
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};
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//-------------------------------------------------------------------------
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// CommandObjectWatchpointEnable
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//-------------------------------------------------------------------------
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#pragma mark Enable
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class CommandObjectWatchpointEnable : public CommandObjectParsed
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{
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public:
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CommandObjectWatchpointEnable (CommandInterpreter &interpreter) :
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CommandObjectParsed (interpreter,
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"enable",
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"Enable the specified disabled watchpoint(s). If no watchpoints are specified, enable all of them.",
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NULL)
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{
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CommandArgumentEntry arg;
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CommandObject::AddIDsArgumentData(arg, eArgTypeWatchpointID, eArgTypeWatchpointIDRange);
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// Add the entry for the first argument for this command to the object's arguments vector.
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m_arguments.push_back(arg);
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}
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virtual
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~CommandObjectWatchpointEnable () {}
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protected:
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virtual bool
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DoExecute (Args& command,
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CommandReturnObject &result)
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{
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Target *target = m_interpreter.GetDebugger().GetSelectedTarget().get();
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if (!CheckTargetForWatchpointOperations(target, result))
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return false;
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Mutex::Locker locker;
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target->GetWatchpointList().GetListMutex(locker);
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const WatchpointList &watchpoints = target->GetWatchpointList();
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size_t num_watchpoints = watchpoints.GetSize();
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if (num_watchpoints == 0)
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{
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result.AppendError("No watchpoints exist to be enabled.");
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result.SetStatus(eReturnStatusFailed);
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return false;
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}
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if (command.GetArgumentCount() == 0)
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{
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// No watchpoint selected; enable all currently set watchpoints.
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target->EnableAllWatchpoints();
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result.AppendMessageWithFormat("All watchpoints enabled. (%lu watchpoints)\n", num_watchpoints);
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result.SetStatus(eReturnStatusSuccessFinishNoResult);
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}
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else
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{
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// Particular watchpoints selected; enable them.
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std::vector<uint32_t> wp_ids;
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if (!CommandObjectMultiwordWatchpoint::VerifyWatchpointIDs(command, wp_ids))
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{
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result.AppendError("Invalid watchpoints specification.");
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result.SetStatus(eReturnStatusFailed);
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return false;
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}
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int count = 0;
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const size_t size = wp_ids.size();
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for (size_t i = 0; i < size; ++i)
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if (target->EnableWatchpointByID(wp_ids[i]))
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++count;
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result.AppendMessageWithFormat("%d watchpoints enabled.\n", count);
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result.SetStatus(eReturnStatusSuccessFinishNoResult);
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}
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return result.Succeeded();
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}
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private:
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};
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//-------------------------------------------------------------------------
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// CommandObjectWatchpointDisable
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//-------------------------------------------------------------------------
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#pragma mark Disable
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class CommandObjectWatchpointDisable : public CommandObjectParsed
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{
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public:
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CommandObjectWatchpointDisable (CommandInterpreter &interpreter) :
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CommandObjectParsed (interpreter,
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"watchpoint disable",
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"Disable the specified watchpoint(s) without removing it/them. If no watchpoints are specified, disable them all.",
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NULL)
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{
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CommandArgumentEntry arg;
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CommandObject::AddIDsArgumentData(arg, eArgTypeWatchpointID, eArgTypeWatchpointIDRange);
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// Add the entry for the first argument for this command to the object's arguments vector.
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m_arguments.push_back(arg);
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}
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virtual
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~CommandObjectWatchpointDisable () {}
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protected:
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virtual bool
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DoExecute (Args& command, CommandReturnObject &result)
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{
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Target *target = m_interpreter.GetDebugger().GetSelectedTarget().get();
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if (!CheckTargetForWatchpointOperations(target, result))
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return false;
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Mutex::Locker locker;
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target->GetWatchpointList().GetListMutex(locker);
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const WatchpointList &watchpoints = target->GetWatchpointList();
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size_t num_watchpoints = watchpoints.GetSize();
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if (num_watchpoints == 0)
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{
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result.AppendError("No watchpoints exist to be disabled.");
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result.SetStatus(eReturnStatusFailed);
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return false;
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}
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if (command.GetArgumentCount() == 0)
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{
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// No watchpoint selected; disable all currently set watchpoints.
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if (target->DisableAllWatchpoints())
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{
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result.AppendMessageWithFormat("All watchpoints disabled. (%lu watchpoints)\n", num_watchpoints);
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result.SetStatus(eReturnStatusSuccessFinishNoResult);
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}
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else
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{
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result.AppendError("Disable all watchpoints failed\n");
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result.SetStatus(eReturnStatusFailed);
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}
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}
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else
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{
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// Particular watchpoints selected; disable them.
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std::vector<uint32_t> wp_ids;
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if (!CommandObjectMultiwordWatchpoint::VerifyWatchpointIDs(command, wp_ids))
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{
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result.AppendError("Invalid watchpoints specification.");
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result.SetStatus(eReturnStatusFailed);
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return false;
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}
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int count = 0;
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const size_t size = wp_ids.size();
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for (size_t i = 0; i < size; ++i)
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if (target->DisableWatchpointByID(wp_ids[i]))
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++count;
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result.AppendMessageWithFormat("%d watchpoints disabled.\n", count);
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result.SetStatus(eReturnStatusSuccessFinishNoResult);
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}
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return result.Succeeded();
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}
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};
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//-------------------------------------------------------------------------
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// CommandObjectWatchpointDelete
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//-------------------------------------------------------------------------
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#pragma mark Delete
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class CommandObjectWatchpointDelete : public CommandObjectParsed
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{
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public:
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CommandObjectWatchpointDelete (CommandInterpreter &interpreter) :
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CommandObjectParsed(interpreter,
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"watchpoint delete",
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"Delete the specified watchpoint(s). If no watchpoints are specified, delete them all.",
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NULL)
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|
{
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CommandArgumentEntry arg;
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CommandObject::AddIDsArgumentData(arg, eArgTypeWatchpointID, eArgTypeWatchpointIDRange);
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// Add the entry for the first argument for this command to the object's arguments vector.
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m_arguments.push_back(arg);
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}
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virtual
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~CommandObjectWatchpointDelete () {}
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protected:
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virtual bool
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DoExecute (Args& command, CommandReturnObject &result)
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|
{
|
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Target *target = m_interpreter.GetDebugger().GetSelectedTarget().get();
|
|
if (!CheckTargetForWatchpointOperations(target, result))
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return false;
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|
|
|
Mutex::Locker locker;
|
|
target->GetWatchpointList().GetListMutex(locker);
|
|
|
|
const WatchpointList &watchpoints = target->GetWatchpointList();
|
|
|
|
size_t num_watchpoints = watchpoints.GetSize();
|
|
|
|
if (num_watchpoints == 0)
|
|
{
|
|
result.AppendError("No watchpoints exist to be deleted.");
|
|
result.SetStatus(eReturnStatusFailed);
|
|
return false;
|
|
}
|
|
|
|
if (command.GetArgumentCount() == 0)
|
|
{
|
|
if (!m_interpreter.Confirm("About to delete all watchpoints, do you want to do that?", true))
|
|
{
|
|
result.AppendMessage("Operation cancelled...");
|
|
}
|
|
else
|
|
{
|
|
target->RemoveAllWatchpoints();
|
|
result.AppendMessageWithFormat("All watchpoints removed. (%lu watchpoints)\n", num_watchpoints);
|
|
}
|
|
result.SetStatus (eReturnStatusSuccessFinishNoResult);
|
|
}
|
|
else
|
|
{
|
|
// Particular watchpoints selected; delete them.
|
|
std::vector<uint32_t> wp_ids;
|
|
if (!CommandObjectMultiwordWatchpoint::VerifyWatchpointIDs(command, wp_ids))
|
|
{
|
|
result.AppendError("Invalid watchpoints specification.");
|
|
result.SetStatus(eReturnStatusFailed);
|
|
return false;
|
|
}
|
|
|
|
int count = 0;
|
|
const size_t size = wp_ids.size();
|
|
for (size_t i = 0; i < size; ++i)
|
|
if (target->RemoveWatchpointByID(wp_ids[i]))
|
|
++count;
|
|
result.AppendMessageWithFormat("%d watchpoints deleted.\n",count);
|
|
result.SetStatus (eReturnStatusSuccessFinishNoResult);
|
|
}
|
|
|
|
return result.Succeeded();
|
|
}
|
|
|
|
};
|
|
|
|
//-------------------------------------------------------------------------
|
|
// CommandObjectWatchpointIgnore
|
|
//-------------------------------------------------------------------------
|
|
|
|
class CommandObjectWatchpointIgnore : public CommandObjectParsed
|
|
{
|
|
public:
|
|
CommandObjectWatchpointIgnore (CommandInterpreter &interpreter) :
|
|
CommandObjectParsed (interpreter,
|
|
"watchpoint ignore",
|
|
"Set ignore count on the specified watchpoint(s). If no watchpoints are specified, set them all.",
|
|
NULL),
|
|
m_options (interpreter)
|
|
{
|
|
CommandArgumentEntry arg;
|
|
CommandObject::AddIDsArgumentData(arg, eArgTypeWatchpointID, eArgTypeWatchpointIDRange);
|
|
// Add the entry for the first argument for this command to the object's arguments vector.
|
|
m_arguments.push_back(arg);
|
|
}
|
|
|
|
virtual
|
|
~CommandObjectWatchpointIgnore () {}
|
|
|
|
virtual Options *
|
|
GetOptions ()
|
|
{
|
|
return &m_options;
|
|
}
|
|
|
|
class CommandOptions : public Options
|
|
{
|
|
public:
|
|
|
|
CommandOptions (CommandInterpreter &interpreter) :
|
|
Options (interpreter),
|
|
m_ignore_count (0)
|
|
{
|
|
}
|
|
|
|
virtual
|
|
~CommandOptions () {}
|
|
|
|
virtual Error
|
|
SetOptionValue (uint32_t option_idx, const char *option_arg)
|
|
{
|
|
Error error;
|
|
const int short_option = m_getopt_table[option_idx].val;
|
|
|
|
switch (short_option)
|
|
{
|
|
case 'i':
|
|
{
|
|
m_ignore_count = Args::StringToUInt32(option_arg, UINT32_MAX, 0);
|
|
if (m_ignore_count == UINT32_MAX)
|
|
error.SetErrorStringWithFormat ("invalid ignore count '%s'", option_arg);
|
|
}
|
|
break;
|
|
default:
|
|
error.SetErrorStringWithFormat ("unrecognized option '%c'", short_option);
|
|
break;
|
|
}
|
|
|
|
return error;
|
|
}
|
|
|
|
void
|
|
OptionParsingStarting ()
|
|
{
|
|
m_ignore_count = 0;
|
|
}
|
|
|
|
const OptionDefinition *
|
|
GetDefinitions ()
|
|
{
|
|
return g_option_table;
|
|
}
|
|
|
|
|
|
// Options table: Required for subclasses of Options.
|
|
|
|
static OptionDefinition g_option_table[];
|
|
|
|
// Instance variables to hold the values for command options.
|
|
|
|
uint32_t m_ignore_count;
|
|
};
|
|
|
|
protected:
|
|
virtual bool
|
|
DoExecute (Args& command,
|
|
CommandReturnObject &result)
|
|
{
|
|
Target *target = m_interpreter.GetDebugger().GetSelectedTarget().get();
|
|
if (!CheckTargetForWatchpointOperations(target, result))
|
|
return false;
|
|
|
|
Mutex::Locker locker;
|
|
target->GetWatchpointList().GetListMutex(locker);
|
|
|
|
const WatchpointList &watchpoints = target->GetWatchpointList();
|
|
|
|
size_t num_watchpoints = watchpoints.GetSize();
|
|
|
|
if (num_watchpoints == 0)
|
|
{
|
|
result.AppendError("No watchpoints exist to be ignored.");
|
|
result.SetStatus(eReturnStatusFailed);
|
|
return false;
|
|
}
|
|
|
|
if (command.GetArgumentCount() == 0)
|
|
{
|
|
target->IgnoreAllWatchpoints(m_options.m_ignore_count);
|
|
result.AppendMessageWithFormat("All watchpoints ignored. (%lu watchpoints)\n", num_watchpoints);
|
|
result.SetStatus (eReturnStatusSuccessFinishNoResult);
|
|
}
|
|
else
|
|
{
|
|
// Particular watchpoints selected; ignore them.
|
|
std::vector<uint32_t> wp_ids;
|
|
if (!CommandObjectMultiwordWatchpoint::VerifyWatchpointIDs(command, wp_ids))
|
|
{
|
|
result.AppendError("Invalid watchpoints specification.");
|
|
result.SetStatus(eReturnStatusFailed);
|
|
return false;
|
|
}
|
|
|
|
int count = 0;
|
|
const size_t size = wp_ids.size();
|
|
for (size_t i = 0; i < size; ++i)
|
|
if (target->IgnoreWatchpointByID(wp_ids[i], m_options.m_ignore_count))
|
|
++count;
|
|
result.AppendMessageWithFormat("%d watchpoints ignored.\n",count);
|
|
result.SetStatus (eReturnStatusSuccessFinishNoResult);
|
|
}
|
|
|
|
return result.Succeeded();
|
|
}
|
|
|
|
private:
|
|
CommandOptions m_options;
|
|
};
|
|
|
|
#pragma mark Ignore::CommandOptions
|
|
OptionDefinition
|
|
CommandObjectWatchpointIgnore::CommandOptions::g_option_table[] =
|
|
{
|
|
{ LLDB_OPT_SET_ALL, true, "ignore-count", 'i', required_argument, NULL, 0, eArgTypeCount, "Set the number of times this watchpoint is skipped before stopping." },
|
|
{ 0, false, NULL, 0 , 0, NULL, 0, eArgTypeNone, NULL }
|
|
};
|
|
|
|
|
|
//-------------------------------------------------------------------------
|
|
// CommandObjectWatchpointModify
|
|
//-------------------------------------------------------------------------
|
|
#pragma mark Modify
|
|
|
|
class CommandObjectWatchpointModify : public CommandObjectParsed
|
|
{
|
|
public:
|
|
|
|
CommandObjectWatchpointModify (CommandInterpreter &interpreter) :
|
|
CommandObjectParsed (interpreter,
|
|
"watchpoint modify",
|
|
"Modify the options on a watchpoint or set of watchpoints in the executable. "
|
|
"If no watchpoint is specified, act on the last created watchpoint. "
|
|
"Passing an empty argument clears the modification.",
|
|
NULL),
|
|
m_options (interpreter)
|
|
{
|
|
CommandArgumentEntry arg;
|
|
CommandObject::AddIDsArgumentData(arg, eArgTypeWatchpointID, eArgTypeWatchpointIDRange);
|
|
// Add the entry for the first argument for this command to the object's arguments vector.
|
|
m_arguments.push_back (arg);
|
|
}
|
|
|
|
virtual
|
|
~CommandObjectWatchpointModify () {}
|
|
|
|
virtual Options *
|
|
GetOptions ()
|
|
{
|
|
return &m_options;
|
|
}
|
|
|
|
class CommandOptions : public Options
|
|
{
|
|
public:
|
|
|
|
CommandOptions (CommandInterpreter &interpreter) :
|
|
Options (interpreter),
|
|
m_condition (),
|
|
m_condition_passed (false)
|
|
{
|
|
}
|
|
|
|
virtual
|
|
~CommandOptions () {}
|
|
|
|
virtual Error
|
|
SetOptionValue (uint32_t option_idx, const char *option_arg)
|
|
{
|
|
Error error;
|
|
const int short_option = m_getopt_table[option_idx].val;
|
|
|
|
switch (short_option)
|
|
{
|
|
case 'c':
|
|
if (option_arg != NULL)
|
|
m_condition.assign (option_arg);
|
|
else
|
|
m_condition.clear();
|
|
m_condition_passed = true;
|
|
break;
|
|
default:
|
|
error.SetErrorStringWithFormat ("unrecognized option '%c'", short_option);
|
|
break;
|
|
}
|
|
|
|
return error;
|
|
}
|
|
|
|
void
|
|
OptionParsingStarting ()
|
|
{
|
|
m_condition.clear();
|
|
m_condition_passed = false;
|
|
}
|
|
|
|
const OptionDefinition*
|
|
GetDefinitions ()
|
|
{
|
|
return g_option_table;
|
|
}
|
|
|
|
// Options table: Required for subclasses of Options.
|
|
|
|
static OptionDefinition g_option_table[];
|
|
|
|
// Instance variables to hold the values for command options.
|
|
|
|
std::string m_condition;
|
|
bool m_condition_passed;
|
|
};
|
|
|
|
protected:
|
|
virtual bool
|
|
DoExecute (Args& command, CommandReturnObject &result)
|
|
{
|
|
Target *target = m_interpreter.GetDebugger().GetSelectedTarget().get();
|
|
if (!CheckTargetForWatchpointOperations(target, result))
|
|
return false;
|
|
|
|
Mutex::Locker locker;
|
|
target->GetWatchpointList().GetListMutex(locker);
|
|
|
|
const WatchpointList &watchpoints = target->GetWatchpointList();
|
|
|
|
size_t num_watchpoints = watchpoints.GetSize();
|
|
|
|
if (num_watchpoints == 0)
|
|
{
|
|
result.AppendError("No watchpoints exist to be modified.");
|
|
result.SetStatus(eReturnStatusFailed);
|
|
return false;
|
|
}
|
|
|
|
if (command.GetArgumentCount() == 0)
|
|
{
|
|
WatchpointSP wp_sp = target->GetLastCreatedWatchpoint();
|
|
wp_sp->SetCondition(m_options.m_condition.c_str());
|
|
result.SetStatus (eReturnStatusSuccessFinishNoResult);
|
|
}
|
|
else
|
|
{
|
|
// Particular watchpoints selected; set condition on them.
|
|
std::vector<uint32_t> wp_ids;
|
|
if (!CommandObjectMultiwordWatchpoint::VerifyWatchpointIDs(command, wp_ids))
|
|
{
|
|
result.AppendError("Invalid watchpoints specification.");
|
|
result.SetStatus(eReturnStatusFailed);
|
|
return false;
|
|
}
|
|
|
|
int count = 0;
|
|
const size_t size = wp_ids.size();
|
|
for (size_t i = 0; i < size; ++i)
|
|
{
|
|
WatchpointSP wp_sp = watchpoints.FindByID(wp_ids[i]);
|
|
if (wp_sp)
|
|
{
|
|
wp_sp->SetCondition(m_options.m_condition.c_str());
|
|
++count;
|
|
}
|
|
}
|
|
result.AppendMessageWithFormat("%d watchpoints modified.\n",count);
|
|
result.SetStatus (eReturnStatusSuccessFinishNoResult);
|
|
}
|
|
|
|
return result.Succeeded();
|
|
}
|
|
|
|
private:
|
|
CommandOptions m_options;
|
|
};
|
|
|
|
#pragma mark Modify::CommandOptions
|
|
OptionDefinition
|
|
CommandObjectWatchpointModify::CommandOptions::g_option_table[] =
|
|
{
|
|
{ LLDB_OPT_SET_ALL, false, "condition", 'c', required_argument, NULL, 0, eArgTypeExpression, "The watchpoint stops only if this condition expression evaluates to true."},
|
|
{ 0, false, NULL, 0 , 0, NULL, 0, eArgTypeNone, NULL }
|
|
};
|
|
|
|
//-------------------------------------------------------------------------
|
|
// CommandObjectWatchpointSetVariable
|
|
//-------------------------------------------------------------------------
|
|
#pragma mark SetVariable
|
|
|
|
class CommandObjectWatchpointSetVariable : public CommandObjectParsed
|
|
{
|
|
public:
|
|
|
|
CommandObjectWatchpointSetVariable (CommandInterpreter &interpreter) :
|
|
CommandObjectParsed (interpreter,
|
|
"watchpoint set variable",
|
|
"Set a watchpoint on a variable. "
|
|
"Use the '-w' option to specify the type of watchpoint and "
|
|
"the '-x' option to specify the byte size to watch for. "
|
|
"If no '-w' option is specified, it defaults to write. "
|
|
"If no '-x' option is specified, it defaults to the variable's "
|
|
"byte size. "
|
|
"Note that there are limited hardware resources for watchpoints. "
|
|
"If watchpoint setting fails, consider disable/delete existing ones "
|
|
"to free up resources.",
|
|
NULL,
|
|
eFlagProcessMustBeLaunched | eFlagProcessMustBePaused),
|
|
m_option_group (interpreter),
|
|
m_option_watchpoint ()
|
|
{
|
|
SetHelpLong(
|
|
"Examples: \n\
|
|
\n\
|
|
watchpoint set variable -w read_wriate my_global_var \n\
|
|
# Watch my_global_var for read/write access, with the region to watch corresponding to the byte size of the data type.\n");
|
|
|
|
CommandArgumentEntry arg;
|
|
CommandArgumentData var_name_arg;
|
|
|
|
// Define the only variant of this arg.
|
|
var_name_arg.arg_type = eArgTypeVarName;
|
|
var_name_arg.arg_repetition = eArgRepeatPlain;
|
|
|
|
// Push the variant into the argument entry.
|
|
arg.push_back (var_name_arg);
|
|
|
|
// Push the data for the only argument into the m_arguments vector.
|
|
m_arguments.push_back (arg);
|
|
|
|
// Absorb the '-w' and '-x' options into our option group.
|
|
m_option_group.Append (&m_option_watchpoint, LLDB_OPT_SET_ALL, LLDB_OPT_SET_1);
|
|
m_option_group.Finalize();
|
|
}
|
|
|
|
virtual
|
|
~CommandObjectWatchpointSetVariable () {}
|
|
|
|
virtual Options *
|
|
GetOptions ()
|
|
{
|
|
return &m_option_group;
|
|
}
|
|
|
|
protected:
|
|
static uint32_t GetVariableCallback (void *baton,
|
|
const char *name,
|
|
VariableList &variable_list)
|
|
{
|
|
Target *target = static_cast<Target *>(baton);
|
|
if (target)
|
|
{
|
|
return target->GetImages().FindGlobalVariables (ConstString(name),
|
|
true,
|
|
UINT32_MAX,
|
|
variable_list);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
virtual bool
|
|
DoExecute (Args& command,
|
|
CommandReturnObject &result)
|
|
{
|
|
Target *target = m_interpreter.GetDebugger().GetSelectedTarget().get();
|
|
ExecutionContext exe_ctx(m_interpreter.GetExecutionContext());
|
|
StackFrame *frame = exe_ctx.GetFramePtr();
|
|
if (frame == NULL)
|
|
{
|
|
result.AppendError ("you must be stopped in a valid stack frame to set a watchpoint.");
|
|
result.SetStatus (eReturnStatusFailed);
|
|
return false;
|
|
}
|
|
|
|
// If no argument is present, issue an error message. There's no way to set a watchpoint.
|
|
if (command.GetArgumentCount() <= 0)
|
|
{
|
|
result.GetErrorStream().Printf("error: required argument missing; specify your program variable to watch for\n");
|
|
result.SetStatus(eReturnStatusFailed);
|
|
return false;
|
|
}
|
|
|
|
// If no '-w' is specified, default to '-w write'.
|
|
if (!m_option_watchpoint.watch_type_specified)
|
|
{
|
|
m_option_watchpoint.watch_type = OptionGroupWatchpoint::eWatchWrite;
|
|
}
|
|
|
|
// We passed the sanity check for the command.
|
|
// Proceed to set the watchpoint now.
|
|
lldb::addr_t addr = 0;
|
|
size_t size = 0;
|
|
|
|
VariableSP var_sp;
|
|
ValueObjectSP valobj_sp;
|
|
Stream &output_stream = result.GetOutputStream();
|
|
|
|
// A simple watch variable gesture allows only one argument.
|
|
if (command.GetArgumentCount() != 1) {
|
|
result.GetErrorStream().Printf("error: specify exactly one variable to watch for\n");
|
|
result.SetStatus(eReturnStatusFailed);
|
|
return false;
|
|
}
|
|
|
|
// Things have checked out ok...
|
|
Error error;
|
|
uint32_t expr_path_options = StackFrame::eExpressionPathOptionCheckPtrVsMember |
|
|
StackFrame::eExpressionPathOptionsAllowDirectIVarAccess;
|
|
valobj_sp = frame->GetValueForVariableExpressionPath (command.GetArgumentAtIndex(0),
|
|
eNoDynamicValues,
|
|
expr_path_options,
|
|
var_sp,
|
|
error);
|
|
|
|
if (!valobj_sp) {
|
|
// Not in the frame; let's check the globals.
|
|
|
|
VariableList variable_list;
|
|
ValueObjectList valobj_list;
|
|
|
|
Error error (Variable::GetValuesForVariableExpressionPath (command.GetArgumentAtIndex(0),
|
|
exe_ctx.GetBestExecutionContextScope(),
|
|
GetVariableCallback,
|
|
target,
|
|
variable_list,
|
|
valobj_list));
|
|
|
|
if (valobj_list.GetSize())
|
|
valobj_sp = valobj_list.GetValueObjectAtIndex(0);
|
|
}
|
|
|
|
ClangASTType type;
|
|
|
|
if (valobj_sp) {
|
|
AddressType addr_type;
|
|
addr = valobj_sp->GetAddressOf(false, &addr_type);
|
|
if (addr_type == eAddressTypeLoad) {
|
|
// We're in business.
|
|
// Find out the size of this variable.
|
|
size = m_option_watchpoint.watch_size == 0 ? valobj_sp->GetByteSize()
|
|
: m_option_watchpoint.watch_size;
|
|
}
|
|
type.SetClangType(valobj_sp->GetClangAST(), valobj_sp->GetClangType());
|
|
} 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",
|
|
command.GetArgumentAtIndex(0));
|
|
return false;
|
|
}
|
|
|
|
// Now it's time to create the watchpoint.
|
|
uint32_t watch_type = m_option_watchpoint.watch_type;
|
|
error.Clear();
|
|
Watchpoint *wp = target->CreateWatchpoint(addr, size, &type, watch_type, error).get();
|
|
if (wp) {
|
|
wp->SetWatchSpec(command.GetArgumentAtIndex(0));
|
|
wp->SetWatchVariable(true);
|
|
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());
|
|
}
|
|
output_stream.Printf("Watchpoint created: ");
|
|
wp->GetDescription(&output_stream, lldb::eDescriptionLevelFull);
|
|
output_stream.EOL();
|
|
result.SetStatus(eReturnStatusSuccessFinishResult);
|
|
} else {
|
|
result.AppendErrorWithFormat("Watchpoint creation failed (addr=0x%" PRIx64 ", size=%lu, variable expression='%s').\n",
|
|
addr, size, command.GetArgumentAtIndex(0));
|
|
if (error.AsCString(NULL))
|
|
result.AppendError(error.AsCString());
|
|
result.SetStatus(eReturnStatusFailed);
|
|
}
|
|
|
|
return result.Succeeded();
|
|
}
|
|
|
|
private:
|
|
OptionGroupOptions m_option_group;
|
|
OptionGroupWatchpoint m_option_watchpoint;
|
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};
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//-------------------------------------------------------------------------
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// CommandObjectWatchpointSetExpression
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//-------------------------------------------------------------------------
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#pragma mark Set
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class CommandObjectWatchpointSetExpression : public CommandObjectRaw
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{
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public:
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CommandObjectWatchpointSetExpression (CommandInterpreter &interpreter) :
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CommandObjectRaw (interpreter,
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"watchpoint set expression",
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"Set a watchpoint on an address by supplying an expression. "
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"Use the '-w' option to specify the type of watchpoint and "
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"the '-x' option to specify the byte size to watch for. "
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"If no '-w' option is specified, it defaults to write. "
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"If no '-x' option is specified, it defaults to the target's "
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|
"pointer byte size. "
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"Note that there are limited hardware resources for watchpoints. "
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"If watchpoint setting fails, consider disable/delete existing ones "
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"to free up resources.",
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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_watchpoint ()
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{
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SetHelpLong(
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"Examples: \n\
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\n\
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watchpoint set expression -w write -x 1 -- foo + 32\n\
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# Watch write access for the 1-byte region pointed to by the address 'foo + 32'.\n");
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|
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CommandArgumentEntry arg;
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CommandArgumentData expression_arg;
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// Define the only variant of this arg.
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expression_arg.arg_type = eArgTypeExpression;
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expression_arg.arg_repetition = eArgRepeatPlain;
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// Push the only variant into the argument entry.
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arg.push_back (expression_arg);
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// Push the data for the only argument into the m_arguments vector.
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m_arguments.push_back (arg);
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// Absorb the '-w' and '-x' options into our option group.
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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.Finalize();
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}
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|
|
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virtual
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~CommandObjectWatchpointSetExpression () {}
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// Overrides base class's behavior where WantsCompletion = !WantsRawCommandString.
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virtual bool
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|
WantsCompletion() { return true; }
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|
|
|
virtual Options *
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|
GetOptions ()
|
|
{
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|
return &m_option_group;
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|
}
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|
|
|
protected:
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|
virtual bool
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|
DoExecute (const char *raw_command, CommandReturnObject &result)
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|
{
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|
Target *target = m_interpreter.GetDebugger().GetSelectedTarget().get();
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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 set a watchpoint.");
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|
result.SetStatus (eReturnStatusFailed);
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|
return false;
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|
}
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|
|
|
Args command(raw_command);
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|
|
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// Process possible options.
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if (!ParseOptions (command, result))
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|
return false;
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|
|
|
// If no argument is present, issue an error message. There's no way to set a watchpoint.
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|
if (command.GetArgumentCount() <= 0)
|
|
{
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|
result.GetErrorStream().Printf("error: required argument missing; specify an expression to evaulate into the addres to watch for\n");
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|
result.SetStatus(eReturnStatusFailed);
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|
return false;
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|
}
|
|
|
|
bool with_dash_w = m_option_watchpoint.watch_type_specified;
|
|
bool with_dash_x = (m_option_watchpoint.watch_size != 0);
|
|
|
|
// If no '-w' is specified, default to '-w write'.
|
|
if (!with_dash_w)
|
|
{
|
|
m_option_watchpoint.watch_type = OptionGroupWatchpoint::eWatchWrite;
|
|
}
|
|
|
|
// We passed the sanity check for the command.
|
|
// Proceed to set the watchpoint now.
|
|
lldb::addr_t addr = 0;
|
|
size_t size = 0;
|
|
|
|
VariableSP var_sp;
|
|
ValueObjectSP valobj_sp;
|
|
Stream &output_stream = result.GetOutputStream();
|
|
|
|
// We will process the raw command string to rid of the '-w', '-x', or '--'
|
|
llvm::StringRef raw_expr_str(raw_command);
|
|
std::string expr_str = StripOptionTerminator(raw_expr_str, with_dash_w, with_dash_x).str();
|
|
|
|
// Sanity check for when the user forgets to terminate the option strings with a '--'.
|
|
if ((with_dash_w || with_dash_w) && expr_str.empty())
|
|
{
|
|
result.GetErrorStream().Printf("error: did you forget to enter the option terminator string \"--\"?\n");
|
|
result.SetStatus(eReturnStatusFailed);
|
|
return false;
|
|
}
|
|
|
|
// Use expression evaluation to arrive at the address to watch.
|
|
EvaluateExpressionOptions options;
|
|
options.SetCoerceToId(false)
|
|
.SetUnwindOnError(true)
|
|
.SetKeepInMemory(false)
|
|
.SetRunOthers(true)
|
|
.SetTimeoutUsec(0);
|
|
|
|
ExecutionResults expr_result = target->EvaluateExpression (expr_str.c_str(),
|
|
frame,
|
|
valobj_sp,
|
|
options);
|
|
if (expr_result != eExecutionCompleted) {
|
|
result.GetErrorStream().Printf("error: expression evaluation of address to watch failed\n");
|
|
result.GetErrorStream().Printf("expression evaluated: %s\n", expr_str.c_str());
|
|
result.SetStatus(eReturnStatusFailed);
|
|
return false;
|
|
}
|
|
|
|
// Get the address to watch.
|
|
bool success = false;
|
|
addr = valobj_sp->GetValueAsUnsigned(0, &success);
|
|
if (!success) {
|
|
result.GetErrorStream().Printf("error: expression did not evaluate to an address\n");
|
|
result.SetStatus(eReturnStatusFailed);
|
|
return false;
|
|
}
|
|
size = with_dash_x ? m_option_watchpoint.watch_size
|
|
: target->GetArchitecture().GetAddressByteSize();
|
|
|
|
// Now it's time to create the watchpoint.
|
|
uint32_t watch_type = m_option_watchpoint.watch_type;
|
|
|
|
// Fetch the type from the value object, the type of the watched object is the pointee type
|
|
/// of the expression, so convert to that if we found a valid type.
|
|
ClangASTType type(valobj_sp->GetClangAST(), valobj_sp->GetClangType());
|
|
if (type.IsValid())
|
|
type.SetClangType(type.GetASTContext(), type.GetPointeeType());
|
|
|
|
Error error;
|
|
Watchpoint *wp = target->CreateWatchpoint(addr, size, &type, watch_type, error).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());
|
|
}
|
|
output_stream.Printf("Watchpoint created: ");
|
|
wp->GetDescription(&output_stream, lldb::eDescriptionLevelFull);
|
|
output_stream.EOL();
|
|
result.SetStatus(eReturnStatusSuccessFinishResult);
|
|
} else {
|
|
result.AppendErrorWithFormat("Watchpoint creation failed (addr=0x%" PRIx64 ", size=%lu).\n",
|
|
addr, size);
|
|
if (error.AsCString(NULL))
|
|
result.AppendError(error.AsCString());
|
|
result.SetStatus(eReturnStatusFailed);
|
|
}
|
|
|
|
return result.Succeeded();
|
|
}
|
|
|
|
private:
|
|
OptionGroupOptions m_option_group;
|
|
OptionGroupWatchpoint m_option_watchpoint;
|
|
};
|
|
|
|
//-------------------------------------------------------------------------
|
|
// CommandObjectWatchpointSet
|
|
//-------------------------------------------------------------------------
|
|
#pragma mark Set
|
|
|
|
class CommandObjectWatchpointSet : public CommandObjectMultiword
|
|
{
|
|
public:
|
|
|
|
CommandObjectWatchpointSet (CommandInterpreter &interpreter) :
|
|
CommandObjectMultiword (interpreter,
|
|
"watchpoint set",
|
|
"A set of commands for setting a watchpoint.",
|
|
"watchpoint set <subcommand> [<subcommand-options>]")
|
|
{
|
|
|
|
LoadSubCommand ("variable", CommandObjectSP (new CommandObjectWatchpointSetVariable (interpreter)));
|
|
LoadSubCommand ("expression", CommandObjectSP (new CommandObjectWatchpointSetExpression (interpreter)));
|
|
}
|
|
|
|
|
|
virtual
|
|
~CommandObjectWatchpointSet () {}
|
|
|
|
};
|
|
|
|
//-------------------------------------------------------------------------
|
|
// CommandObjectMultiwordWatchpoint
|
|
//-------------------------------------------------------------------------
|
|
#pragma mark MultiwordWatchpoint
|
|
|
|
CommandObjectMultiwordWatchpoint::CommandObjectMultiwordWatchpoint(CommandInterpreter &interpreter) :
|
|
CommandObjectMultiword (interpreter,
|
|
"watchpoint",
|
|
"A set of commands for operating on watchpoints.",
|
|
"watchpoint <command> [<command-options>]")
|
|
{
|
|
CommandObjectSP list_command_object (new CommandObjectWatchpointList (interpreter));
|
|
CommandObjectSP enable_command_object (new CommandObjectWatchpointEnable (interpreter));
|
|
CommandObjectSP disable_command_object (new CommandObjectWatchpointDisable (interpreter));
|
|
CommandObjectSP delete_command_object (new CommandObjectWatchpointDelete (interpreter));
|
|
CommandObjectSP ignore_command_object (new CommandObjectWatchpointIgnore (interpreter));
|
|
CommandObjectSP command_command_object (new CommandObjectWatchpointCommand (interpreter));
|
|
CommandObjectSP modify_command_object (new CommandObjectWatchpointModify (interpreter));
|
|
CommandObjectSP set_command_object (new CommandObjectWatchpointSet (interpreter));
|
|
|
|
list_command_object->SetCommandName ("watchpoint list");
|
|
enable_command_object->SetCommandName("watchpoint enable");
|
|
disable_command_object->SetCommandName("watchpoint disable");
|
|
delete_command_object->SetCommandName("watchpoint delete");
|
|
ignore_command_object->SetCommandName("watchpoint ignore");
|
|
command_command_object->SetCommandName ("watchpoint command");
|
|
modify_command_object->SetCommandName("watchpoint modify");
|
|
set_command_object->SetCommandName("watchpoint set");
|
|
|
|
LoadSubCommand ("list", list_command_object);
|
|
LoadSubCommand ("enable", enable_command_object);
|
|
LoadSubCommand ("disable", disable_command_object);
|
|
LoadSubCommand ("delete", delete_command_object);
|
|
LoadSubCommand ("ignore", ignore_command_object);
|
|
LoadSubCommand ("command", command_command_object);
|
|
LoadSubCommand ("modify", modify_command_object);
|
|
LoadSubCommand ("set", set_command_object);
|
|
}
|
|
|
|
CommandObjectMultiwordWatchpoint::~CommandObjectMultiwordWatchpoint()
|
|
{
|
|
}
|
|
|