b62a3be1a2
watch the location pointed to by the variable. An example,
(lldb) frame variable -w write -x 1 -g g_char_ptr
(char *) g_char_ptr = 0x0000000100100860 ""...
Watchpoint created: WatchpointLocation 1: addr = 0x100100860 size = 1 state = enabled type = w
declare @ '/Volumes/data/lldb/svn/trunk/test/functionalities/watchpoint/hello_watchlocation/main.cpp:21'
...
(lldb) c
Process 3936 resuming
...
rocess 3936 stopped
* thread #2: tid = 0x3403, 0x00000001000009b7 a.out`do_bad_thing_with_location(char*, char) + 23 at main.cpp:27, stop reason = watchpoint 1
frame #0: 0x00000001000009b7 a.out`do_bad_thing_with_location(char*, char) + 23 at main.cpp:27
24 do_bad_thing_with_location(char *char_ptr, char new_val)
25 {
26 *char_ptr = new_val;
-> 27 }
28
29 uint32_t access_pool (uint32_t flag = 0);
30
(lldb)
Also add TestWatchLocation.py test to exercise this functionality.
llvm-svn: 140836
110 lines
3.4 KiB
C++
110 lines
3.4 KiB
C++
//===-- OptionGroupWatchpoint.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/Interpreter/OptionGroupWatchpoint.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/lldb-enumerations.h"
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#include "lldb/Interpreter/Args.h"
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#include "lldb/Utility/Utils.h"
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using namespace lldb;
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using namespace lldb_private;
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static OptionEnumValueElement g_watch_type[] =
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{
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{ OptionGroupWatchpoint::eWatchRead, "read", "Watch for read"},
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{ OptionGroupWatchpoint::eWatchWrite, "write", "Watch for write"},
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{ OptionGroupWatchpoint::eWatchReadWrite, "read_write", "Watch for read/write"},
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{ 0, NULL, NULL }
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};
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static OptionEnumValueElement g_watch_size[] =
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{
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{ 1, "1", "Watch for byte size of 1"},
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{ 2, "2", "Watch for byte size of 2"},
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{ 4, "4", "Watch for byte size of 4"},
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{ 8, "8", "Watch for byte size of 8"},
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{ 0, NULL, NULL }
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};
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// if you add any options here, remember to update the counters in OptionGroupWatchpoint::GetNumDefinitions()
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static OptionDefinition
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g_option_table[] =
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{
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{ LLDB_OPT_SET_1, false, "watch", 'w', required_argument, g_watch_type, 0, eArgTypeWatchType, "Determine how to watch a variable (read, write, or read/write)."},
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{ LLDB_OPT_SET_1, false, "xsize", 'x', required_argument, g_watch_size, 0, eArgTypeByteSize, "Number of bytes to use to watch a location (1, 2, 4, or 8)."}
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};
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OptionGroupWatchpoint::OptionGroupWatchpoint () :
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OptionGroup()
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{
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}
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OptionGroupWatchpoint::~OptionGroupWatchpoint ()
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{
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}
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Error
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OptionGroupWatchpoint::SetOptionValue (CommandInterpreter &interpreter,
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uint32_t option_idx,
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const char *option_arg)
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{
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Error error;
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char short_option = (char) g_option_table[option_idx].short_option;
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switch (short_option)
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{
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case 'w': {
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OptionEnumValueElement *enum_values = g_option_table[option_idx].enum_values;
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watch_type = (WatchType) Args::StringToOptionEnum(option_arg, enum_values, 0, &watch_variable);
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if (!watch_variable)
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error.SetErrorStringWithFormat("Invalid option arg for '-w': '%s'.\n", option_arg);
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break;
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}
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case 'x': {
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bool success = false;
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OptionEnumValueElement *enum_values = g_option_table[option_idx].enum_values;
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watch_size = (WatchType) Args::StringToOptionEnum(option_arg, enum_values, 0, &success);
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if (!success)
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error.SetErrorStringWithFormat("Invalid option arg for '-x': '%s'.\n", option_arg);
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break;
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}
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default:
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error.SetErrorStringWithFormat("Invalid short option character '%c'.\n", 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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OptionGroupWatchpoint::OptionParsingStarting (CommandInterpreter &interpreter)
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{
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watch_variable = false;
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watch_type = eWatchInvalid;
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watch_size = 0;
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}
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const OptionDefinition*
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OptionGroupWatchpoint::GetDefinitions ()
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{
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return g_option_table;
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}
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uint32_t
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OptionGroupWatchpoint::GetNumDefinitions ()
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{
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return arraysize(g_option_table);
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}
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