mirror of
https://github.com/capstone-engine/llvm-capstone.git
synced 2025-04-15 12:50:38 +00:00
4bb3cb2bcb
Currently we only show the user that the expression failed but not what is actually wrong with it. This just dumps the error we get back alongside the other output to the error stream. This should also help with finding out with why sometimees the TestWatchLocationWithWatchSet.py test fails here on the LLDB incremental bot on Green Dragon.
1195 lines
41 KiB
C++
1195 lines
41 KiB
C++
//===-- CommandObjectWatchpoint.cpp ---------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#include "CommandObjectWatchpoint.h"
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#include "CommandObjectWatchpointCommand.h"
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#include <vector>
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#include "llvm/ADT/StringRef.h"
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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/ValueObject.h"
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#include "lldb/Host/OptionParser.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/Symbol/Variable.h"
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#include "lldb/Symbol/VariableList.h"
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#include "lldb/Target/StackFrame.h"
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#include "lldb/Target/Target.h"
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#include "lldb/Utility/StreamString.h"
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using namespace lldb;
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using namespace lldb_private;
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static void AddWatchpointDescription(Stream *s, Watchpoint *wp,
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lldb::DescriptionLevel level) {
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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 CheckTargetForWatchpointOperations(Target *target,
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CommandReturnObject &result) {
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bool process_is_valid =
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target->GetProcessSP() && target->GetProcessSP()->IsAlive();
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if (!process_is_valid) {
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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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// 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 WithRSAIndex(llvm::StringRef Arg) {
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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. False
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// otherwise.
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bool CommandObjectMultiwordWatchpoint::VerifyWatchpointIDs(
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Target *target, Args &args, std::vector<uint32_t> &wp_ids) {
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// Pre-condition: args.GetArgumentCount() > 0.
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if (args.GetArgumentCount() == 0) {
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if (target == nullptr)
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return false;
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WatchpointSP watch_sp = target->GetLastCreatedWatchpoint();
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if (watch_sp) {
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wp_ids.push_back(watch_sp->GetID());
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return true;
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} else
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return false;
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}
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llvm::StringRef Minus("-");
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std::vector<llvm::StringRef> StrRefArgs;
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llvm::StringRef first;
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llvm::StringRef second;
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size_t i;
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int32_t idx;
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// Go through the arguments and make a canonical form of arg list containing
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// only numbers with possible "-" in between.
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for (auto &entry : args.entries()) {
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if ((idx = WithRSAIndex(entry.ref())) == -1) {
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StrRefArgs.push_back(entry.ref());
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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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std::tie(first, second) = entry.ref().split(RSA[idx]);
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if (!first.empty())
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StrRefArgs.push_back(first);
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StrRefArgs.push_back(Minus);
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if (!second.empty())
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StrRefArgs.push_back(second);
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}
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// Now process the canonical list and fill in the vector of uint32_t's. If
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// 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;
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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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return !in_range;
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}
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// CommandObjectWatchpointList
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// CommandObjectWatchpointList::Options
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#pragma mark List::CommandOptions
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#define LLDB_OPTIONS_watchpoint_list
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#include "CommandOptions.inc"
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#pragma mark List
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class CommandObjectWatchpointList : public CommandObjectParsed {
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public:
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CommandObjectWatchpointList(CommandInterpreter &interpreter)
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: CommandObjectParsed(
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interpreter, "watchpoint list",
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"List all watchpoints at configurable levels of detail.", nullptr,
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eCommandRequiresTarget),
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m_options() {
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CommandArgumentEntry arg;
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CommandObject::AddIDsArgumentData(arg, eArgTypeWatchpointID,
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eArgTypeWatchpointIDRange);
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// Add the entry for the first argument for this command to the object's
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// arguments vector.
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m_arguments.push_back(arg);
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}
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~CommandObjectWatchpointList() override = default;
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Options *GetOptions() override { return &m_options; }
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class CommandOptions : public Options {
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public:
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CommandOptions()
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: Options(),
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m_level(lldb::eDescriptionLevelBrief) // Watchpoint List defaults to
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// brief descriptions
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{}
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~CommandOptions() override = default;
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Status SetOptionValue(uint32_t option_idx, llvm::StringRef option_arg,
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ExecutionContext *execution_context) override {
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Status 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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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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llvm_unreachable("Unimplemented option");
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}
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return error;
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}
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void OptionParsingStarting(ExecutionContext *execution_context) override {
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m_level = lldb::eDescriptionLevelFull;
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}
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llvm::ArrayRef<OptionDefinition> GetDefinitions() override {
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return llvm::makeArrayRef(g_watchpoint_list_options);
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}
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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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bool DoExecute(Args &command, CommandReturnObject &result) override {
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Target *target = &GetSelectedTarget();
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if (target->GetProcessSP() && target->GetProcessSP()->IsAlive()) {
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uint32_t num_supported_hardware_watchpoints;
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Status error = target->GetProcessSP()->GetWatchpointSupportInfo(
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num_supported_hardware_watchpoints);
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if (error.Success())
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result.AppendMessageWithFormat(
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"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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std::unique_lock<std::recursive_mutex> lock;
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target->GetWatchpointList().GetListMutex(lock);
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size_t num_watchpoints = watchpoints.GetSize();
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if (num_watchpoints == 0) {
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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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// 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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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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} else {
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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(
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target, command, wp_ids)) {
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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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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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// CommandObjectWatchpointEnable
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#pragma mark Enable
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class CommandObjectWatchpointEnable : public CommandObjectParsed {
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public:
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CommandObjectWatchpointEnable(CommandInterpreter &interpreter)
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: CommandObjectParsed(interpreter, "enable",
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"Enable the specified disabled watchpoint(s). If "
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"no watchpoints are specified, enable all of them.",
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nullptr, eCommandRequiresTarget) {
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CommandArgumentEntry arg;
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CommandObject::AddIDsArgumentData(arg, eArgTypeWatchpointID,
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eArgTypeWatchpointIDRange);
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// Add the entry for the first argument for this command to the object's
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// arguments vector.
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m_arguments.push_back(arg);
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}
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~CommandObjectWatchpointEnable() override = default;
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protected:
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bool DoExecute(Args &command, CommandReturnObject &result) override {
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Target *target = &GetSelectedTarget();
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if (!CheckTargetForWatchpointOperations(target, result))
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return false;
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std::unique_lock<std::recursive_mutex> lock;
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target->GetWatchpointList().GetListMutex(lock);
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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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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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// No watchpoint selected; enable all currently set watchpoints.
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target->EnableAllWatchpoints();
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result.AppendMessageWithFormat("All watchpoints enabled. (%" PRIu64
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" watchpoints)\n",
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(uint64_t)num_watchpoints);
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result.SetStatus(eReturnStatusSuccessFinishNoResult);
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} else {
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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(
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target, command, wp_ids)) {
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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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};
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// CommandObjectWatchpointDisable
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#pragma mark Disable
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class CommandObjectWatchpointDisable : public CommandObjectParsed {
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public:
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CommandObjectWatchpointDisable(CommandInterpreter &interpreter)
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: CommandObjectParsed(interpreter, "watchpoint disable",
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"Disable the specified watchpoint(s) without "
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"removing it/them. If no watchpoints are "
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"specified, disable them all.",
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nullptr, eCommandRequiresTarget) {
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CommandArgumentEntry arg;
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CommandObject::AddIDsArgumentData(arg, eArgTypeWatchpointID,
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eArgTypeWatchpointIDRange);
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// Add the entry for the first argument for this command to the object's
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// arguments vector.
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m_arguments.push_back(arg);
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}
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~CommandObjectWatchpointDisable() override = default;
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protected:
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bool DoExecute(Args &command, CommandReturnObject &result) override {
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Target *target = &GetSelectedTarget();
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if (!CheckTargetForWatchpointOperations(target, result))
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return false;
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std::unique_lock<std::recursive_mutex> lock;
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target->GetWatchpointList().GetListMutex(lock);
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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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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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// No watchpoint selected; disable all currently set watchpoints.
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if (target->DisableAllWatchpoints()) {
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result.AppendMessageWithFormat("All watchpoints disabled. (%" PRIu64
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" watchpoints)\n",
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(uint64_t)num_watchpoints);
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result.SetStatus(eReturnStatusSuccessFinishNoResult);
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} else {
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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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} else {
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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(
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target, command, wp_ids)) {
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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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// CommandObjectWatchpointDelete
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#define LLDB_OPTIONS_watchpoint_delete
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#include "CommandOptions.inc"
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// CommandObjectWatchpointDelete
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#pragma mark Delete
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class CommandObjectWatchpointDelete : public CommandObjectParsed {
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public:
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CommandObjectWatchpointDelete(CommandInterpreter &interpreter)
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: CommandObjectParsed(interpreter, "watchpoint delete",
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"Delete the specified watchpoint(s). If no "
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"watchpoints are specified, delete them all.",
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nullptr, eCommandRequiresTarget),
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m_options() {
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CommandArgumentEntry arg;
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CommandObject::AddIDsArgumentData(arg, eArgTypeWatchpointID,
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eArgTypeWatchpointIDRange);
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// Add the entry for the first argument for this command to the object's
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// arguments vector.
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m_arguments.push_back(arg);
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}
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~CommandObjectWatchpointDelete() override = default;
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Options *GetOptions() override { return &m_options; }
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class CommandOptions : public Options {
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public:
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CommandOptions() : Options(), m_force(false) {}
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~CommandOptions() override = default;
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Status SetOptionValue(uint32_t option_idx, llvm::StringRef option_arg,
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ExecutionContext *execution_context) override {
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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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case 'f':
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m_force = true;
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break;
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default:
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llvm_unreachable("Unimplemented option");
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}
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return {};
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}
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void OptionParsingStarting(ExecutionContext *execution_context) override {
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m_force = false;
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}
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llvm::ArrayRef<OptionDefinition> GetDefinitions() override {
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return llvm::makeArrayRef(g_watchpoint_delete_options);
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}
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// Instance variables to hold the values for command options.
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bool m_force;
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};
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protected:
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bool DoExecute(Args &command, CommandReturnObject &result) override {
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Target *target = &GetSelectedTarget();
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if (!CheckTargetForWatchpointOperations(target, result))
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return false;
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std::unique_lock<std::recursive_mutex> lock;
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target->GetWatchpointList().GetListMutex(lock);
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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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result.AppendError("No watchpoints exist to be deleted.");
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result.SetStatus(eReturnStatusFailed);
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return false;
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}
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if (command.empty()) {
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if (!m_options.m_force &&
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!m_interpreter.Confirm(
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"About to delete all watchpoints, do you want to do that?",
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true)) {
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result.AppendMessage("Operation cancelled...");
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} else {
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target->RemoveAllWatchpoints();
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result.AppendMessageWithFormat("All watchpoints removed. (%" PRIu64
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" watchpoints)\n",
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(uint64_t)num_watchpoints);
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}
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result.SetStatus(eReturnStatusSuccessFinishNoResult);
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return result.Succeeded();
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}
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// Particular watchpoints selected; delete them.
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std::vector<uint32_t> wp_ids;
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if (!CommandObjectMultiwordWatchpoint::VerifyWatchpointIDs(target, command,
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wp_ids)) {
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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;
|
|
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();
|
|
}
|
|
|
|
private:
|
|
CommandOptions m_options;
|
|
};
|
|
|
|
// CommandObjectWatchpointIgnore
|
|
|
|
#pragma mark Ignore::CommandOptions
|
|
#define LLDB_OPTIONS_watchpoint_ignore
|
|
#include "CommandOptions.inc"
|
|
|
|
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.",
|
|
nullptr, eCommandRequiresTarget),
|
|
m_options() {
|
|
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);
|
|
}
|
|
|
|
~CommandObjectWatchpointIgnore() override = default;
|
|
|
|
Options *GetOptions() override { return &m_options; }
|
|
|
|
class CommandOptions : public Options {
|
|
public:
|
|
CommandOptions() : Options(), m_ignore_count(0) {}
|
|
|
|
~CommandOptions() override = default;
|
|
|
|
Status SetOptionValue(uint32_t option_idx, llvm::StringRef option_arg,
|
|
ExecutionContext *execution_context) override {
|
|
Status error;
|
|
const int short_option = m_getopt_table[option_idx].val;
|
|
|
|
switch (short_option) {
|
|
case 'i':
|
|
if (option_arg.getAsInteger(0, m_ignore_count))
|
|
error.SetErrorStringWithFormat("invalid ignore count '%s'",
|
|
option_arg.str().c_str());
|
|
break;
|
|
default:
|
|
llvm_unreachable("Unimplemented option");
|
|
}
|
|
|
|
return error;
|
|
}
|
|
|
|
void OptionParsingStarting(ExecutionContext *execution_context) override {
|
|
m_ignore_count = 0;
|
|
}
|
|
|
|
llvm::ArrayRef<OptionDefinition> GetDefinitions() override {
|
|
return llvm::makeArrayRef(g_watchpoint_ignore_options);
|
|
}
|
|
|
|
// Instance variables to hold the values for command options.
|
|
|
|
uint32_t m_ignore_count;
|
|
};
|
|
|
|
protected:
|
|
bool DoExecute(Args &command, CommandReturnObject &result) override {
|
|
Target *target = &GetSelectedTarget();
|
|
if (!CheckTargetForWatchpointOperations(target, result))
|
|
return false;
|
|
|
|
std::unique_lock<std::recursive_mutex> lock;
|
|
target->GetWatchpointList().GetListMutex(lock);
|
|
|
|
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. (%" PRIu64
|
|
" watchpoints)\n",
|
|
(uint64_t)num_watchpoints);
|
|
result.SetStatus(eReturnStatusSuccessFinishNoResult);
|
|
} else {
|
|
// Particular watchpoints selected; ignore them.
|
|
std::vector<uint32_t> wp_ids;
|
|
if (!CommandObjectMultiwordWatchpoint::VerifyWatchpointIDs(
|
|
target, 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;
|
|
};
|
|
|
|
// CommandObjectWatchpointModify
|
|
|
|
#pragma mark Modify::CommandOptions
|
|
#define LLDB_OPTIONS_watchpoint_modify
|
|
#include "CommandOptions.inc"
|
|
|
|
#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.",
|
|
nullptr, eCommandRequiresTarget),
|
|
m_options() {
|
|
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);
|
|
}
|
|
|
|
~CommandObjectWatchpointModify() override = default;
|
|
|
|
Options *GetOptions() override { return &m_options; }
|
|
|
|
class CommandOptions : public Options {
|
|
public:
|
|
CommandOptions() : Options(), m_condition(), m_condition_passed(false) {}
|
|
|
|
~CommandOptions() override = default;
|
|
|
|
Status SetOptionValue(uint32_t option_idx, llvm::StringRef option_arg,
|
|
ExecutionContext *execution_context) override {
|
|
Status error;
|
|
const int short_option = m_getopt_table[option_idx].val;
|
|
|
|
switch (short_option) {
|
|
case 'c':
|
|
m_condition = std::string(option_arg);
|
|
m_condition_passed = true;
|
|
break;
|
|
default:
|
|
llvm_unreachable("Unimplemented option");
|
|
}
|
|
|
|
return error;
|
|
}
|
|
|
|
void OptionParsingStarting(ExecutionContext *execution_context) override {
|
|
m_condition.clear();
|
|
m_condition_passed = false;
|
|
}
|
|
|
|
llvm::ArrayRef<OptionDefinition> GetDefinitions() override {
|
|
return llvm::makeArrayRef(g_watchpoint_modify_options);
|
|
}
|
|
|
|
// Instance variables to hold the values for command options.
|
|
|
|
std::string m_condition;
|
|
bool m_condition_passed;
|
|
};
|
|
|
|
protected:
|
|
bool DoExecute(Args &command, CommandReturnObject &result) override {
|
|
Target *target = &GetSelectedTarget();
|
|
if (!CheckTargetForWatchpointOperations(target, result))
|
|
return false;
|
|
|
|
std::unique_lock<std::recursive_mutex> lock;
|
|
target->GetWatchpointList().GetListMutex(lock);
|
|
|
|
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(
|
|
target, 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;
|
|
};
|
|
|
|
// 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 '-s' option to specify the byte size to watch for. "
|
|
"If no '-w' option is specified, it defaults to write. "
|
|
"If no '-s' 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.",
|
|
nullptr,
|
|
eCommandRequiresFrame | eCommandTryTargetAPILock |
|
|
eCommandProcessMustBeLaunched | eCommandProcessMustBePaused),
|
|
m_option_group(), m_option_watchpoint() {
|
|
SetHelpLong(
|
|
R"(
|
|
Examples:
|
|
|
|
(lldb) watchpoint set variable -w read_write my_global_var
|
|
|
|
)"
|
|
" Watches my_global_var for read/write access, with the region to watch \
|
|
corresponding to the byte size of the data type.");
|
|
|
|
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 '-s' options into our option group.
|
|
m_option_group.Append(&m_option_watchpoint, LLDB_OPT_SET_ALL,
|
|
LLDB_OPT_SET_1);
|
|
m_option_group.Finalize();
|
|
}
|
|
|
|
~CommandObjectWatchpointSetVariable() override = default;
|
|
|
|
Options *GetOptions() override { return &m_option_group; }
|
|
|
|
protected:
|
|
static size_t GetVariableCallback(void *baton, const char *name,
|
|
VariableList &variable_list) {
|
|
size_t old_size = variable_list.GetSize();
|
|
Target *target = static_cast<Target *>(baton);
|
|
if (target)
|
|
target->GetImages().FindGlobalVariables(ConstString(name), UINT32_MAX,
|
|
variable_list);
|
|
return variable_list.GetSize() - old_size;
|
|
}
|
|
|
|
bool DoExecute(Args &command, CommandReturnObject &result) override {
|
|
Target *target = GetDebugger().GetSelectedTarget().get();
|
|
StackFrame *frame = m_exe_ctx.GetFramePtr();
|
|
|
|
// 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...
|
|
Status 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;
|
|
|
|
Status error(Variable::GetValuesForVariableExpressionPath(
|
|
command.GetArgumentAtIndex(0),
|
|
m_exe_ctx.GetBestExecutionContextScope(), GetVariableCallback, target,
|
|
variable_list, valobj_list));
|
|
|
|
if (valobj_list.GetSize())
|
|
valobj_sp = valobj_list.GetValueObjectAtIndex(0);
|
|
}
|
|
|
|
CompilerType compiler_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;
|
|
}
|
|
compiler_type = valobj_sp->GetCompilerType();
|
|
} else {
|
|
const char *error_cstr = error.AsCString(nullptr);
|
|
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, &compiler_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(std::string(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=%" PRIu64
|
|
", variable expression='%s').\n",
|
|
addr, (uint64_t)size, command.GetArgumentAtIndex(0));
|
|
if (error.AsCString(nullptr))
|
|
result.AppendError(error.AsCString());
|
|
result.SetStatus(eReturnStatusFailed);
|
|
}
|
|
|
|
return result.Succeeded();
|
|
}
|
|
|
|
private:
|
|
OptionGroupOptions m_option_group;
|
|
OptionGroupWatchpoint m_option_watchpoint;
|
|
};
|
|
|
|
// CommandObjectWatchpointSetExpression
|
|
#pragma mark Set
|
|
|
|
class CommandObjectWatchpointSetExpression : public CommandObjectRaw {
|
|
public:
|
|
CommandObjectWatchpointSetExpression(CommandInterpreter &interpreter)
|
|
: CommandObjectRaw(
|
|
interpreter, "watchpoint set expression",
|
|
"Set a watchpoint on an address by supplying an expression. "
|
|
"Use the '-w' option to specify the type of watchpoint and "
|
|
"the '-s' option to specify the byte size to watch for. "
|
|
"If no '-w' option is specified, it defaults to write. "
|
|
"If no '-s' option is specified, it defaults to the target's "
|
|
"pointer byte size. "
|
|
"Note that there are limited hardware resources for watchpoints. "
|
|
"If watchpoint setting fails, consider disable/delete existing "
|
|
"ones "
|
|
"to free up resources.",
|
|
"",
|
|
eCommandRequiresFrame | eCommandTryTargetAPILock |
|
|
eCommandProcessMustBeLaunched | eCommandProcessMustBePaused),
|
|
m_option_group(), m_option_watchpoint() {
|
|
SetHelpLong(
|
|
R"(
|
|
Examples:
|
|
|
|
(lldb) watchpoint set expression -w write -s 1 -- foo + 32
|
|
|
|
Watches write access for the 1-byte region pointed to by the address 'foo + 32')");
|
|
|
|
CommandArgumentEntry arg;
|
|
CommandArgumentData expression_arg;
|
|
|
|
// Define the only variant of this arg.
|
|
expression_arg.arg_type = eArgTypeExpression;
|
|
expression_arg.arg_repetition = eArgRepeatPlain;
|
|
|
|
// Push the only variant into the argument entry.
|
|
arg.push_back(expression_arg);
|
|
|
|
// Push the data for the only argument into the m_arguments vector.
|
|
m_arguments.push_back(arg);
|
|
|
|
// Absorb the '-w' and '-s' options into our option group.
|
|
m_option_group.Append(&m_option_watchpoint, LLDB_OPT_SET_ALL,
|
|
LLDB_OPT_SET_1);
|
|
m_option_group.Finalize();
|
|
}
|
|
|
|
~CommandObjectWatchpointSetExpression() override = default;
|
|
|
|
// Overrides base class's behavior where WantsCompletion =
|
|
// !WantsRawCommandString.
|
|
bool WantsCompletion() override { return true; }
|
|
|
|
Options *GetOptions() override { return &m_option_group; }
|
|
|
|
protected:
|
|
bool DoExecute(llvm::StringRef raw_command,
|
|
CommandReturnObject &result) override {
|
|
auto exe_ctx = GetCommandInterpreter().GetExecutionContext();
|
|
m_option_group.NotifyOptionParsingStarting(
|
|
&exe_ctx); // This is a raw command, so notify the option group
|
|
|
|
Target *target = GetDebugger().GetSelectedTarget().get();
|
|
StackFrame *frame = m_exe_ctx.GetFramePtr();
|
|
|
|
OptionsWithRaw args(raw_command);
|
|
|
|
llvm::StringRef expr = args.GetRawPart();
|
|
|
|
if (args.HasArgs())
|
|
if (!ParseOptionsAndNotify(args.GetArgs(), result, m_option_group,
|
|
exe_ctx))
|
|
return false;
|
|
|
|
// If no argument is present, issue an error message. There's no way to
|
|
// set a watchpoint.
|
|
if (raw_command.trim().empty()) {
|
|
result.GetErrorStream().Printf("error: required argument missing; "
|
|
"specify an expression to evaulate into "
|
|
"the address 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;
|
|
|
|
ValueObjectSP valobj_sp;
|
|
|
|
// Use expression evaluation to arrive at the address to watch.
|
|
EvaluateExpressionOptions options;
|
|
options.SetCoerceToId(false);
|
|
options.SetUnwindOnError(true);
|
|
options.SetKeepInMemory(false);
|
|
options.SetTryAllThreads(true);
|
|
options.SetTimeout(llvm::None);
|
|
|
|
ExpressionResults expr_result =
|
|
target->EvaluateExpression(expr, frame, valobj_sp, options);
|
|
if (expr_result != eExpressionCompleted) {
|
|
result.GetErrorStream().Printf(
|
|
"error: expression evaluation of address to watch failed\n");
|
|
result.GetErrorStream() << "expression evaluated: \n" << expr << "\n";
|
|
if (valobj_sp && !valobj_sp->GetError().Success())
|
|
result.GetErrorStream() << valobj_sp->GetError().AsCString() << "\n";
|
|
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;
|
|
}
|
|
|
|
if (m_option_watchpoint.watch_size != 0)
|
|
size = m_option_watchpoint.watch_size;
|
|
else
|
|
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.
|
|
CompilerType compiler_type(valobj_sp->GetCompilerType());
|
|
|
|
Status error;
|
|
Watchpoint *wp =
|
|
target->CreateWatchpoint(addr, size, &compiler_type, watch_type, error)
|
|
.get();
|
|
if (wp) {
|
|
Stream &output_stream = result.GetOutputStream();
|
|
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=%" PRIu64 ").\n",
|
|
addr, (uint64_t)size);
|
|
if (error.AsCString(nullptr))
|
|
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", "Commands for setting a watchpoint.",
|
|
"watchpoint set <subcommand> [<subcommand-options>]") {
|
|
|
|
LoadSubCommand(
|
|
"variable",
|
|
CommandObjectSP(new CommandObjectWatchpointSetVariable(interpreter)));
|
|
LoadSubCommand(
|
|
"expression",
|
|
CommandObjectSP(new CommandObjectWatchpointSetExpression(interpreter)));
|
|
}
|
|
|
|
~CommandObjectWatchpointSet() override = default;
|
|
};
|
|
|
|
// CommandObjectMultiwordWatchpoint
|
|
#pragma mark MultiwordWatchpoint
|
|
|
|
CommandObjectMultiwordWatchpoint::CommandObjectMultiwordWatchpoint(
|
|
CommandInterpreter &interpreter)
|
|
: CommandObjectMultiword(interpreter, "watchpoint",
|
|
"Commands for operating on watchpoints.",
|
|
"watchpoint <subcommand> [<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() = default;
|