1 //===-- OptionGroupWatchpoint.cpp -------------------------------*- C++ -*-===//
2 //
3 //                     The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 
10 #include "lldb/Interpreter/OptionGroupWatchpoint.h"
11 
12 // C Includes
13 // C++ Includes
14 // Other libraries and framework includes
15 // Project includes
16 #include "lldb/Host/OptionParser.h"
17 #include "lldb/Interpreter/Args.h"
18 #include "lldb/lldb-enumerations.h"
19 
20 using namespace lldb;
21 using namespace lldb_private;
22 
23 static OptionEnumValueElement g_watch_type[] = {
24     {OptionGroupWatchpoint::eWatchRead, "read", "Watch for read"},
25     {OptionGroupWatchpoint::eWatchWrite, "write", "Watch for write"},
26     {OptionGroupWatchpoint::eWatchReadWrite, "read_write",
27      "Watch for read/write"},
28     {0, nullptr, nullptr}};
29 
30 static OptionEnumValueElement g_watch_size[] = {
31     {1, "1", "Watch for byte size of 1"},
32     {2, "2", "Watch for byte size of 2"},
33     {4, "4", "Watch for byte size of 4"},
34     {8, "8", "Watch for byte size of 8"},
35     {0, nullptr, nullptr}};
36 
37 static OptionDefinition g_option_table[] = {
38     {LLDB_OPT_SET_1, false, "watch", 'w', OptionParser::eRequiredArgument,
39      nullptr, g_watch_type, 0, eArgTypeWatchType,
40      "Specify the type of watching to perform."},
41     {LLDB_OPT_SET_1, false, "size", 's', OptionParser::eRequiredArgument,
42      nullptr, g_watch_size, 0, eArgTypeByteSize,
43      "Number of bytes to use to watch a region."}};
44 
45 bool OptionGroupWatchpoint::IsWatchSizeSupported(uint32_t watch_size) {
46   for (uint32_t i = 0; i < llvm::array_lengthof(g_watch_size); ++i) {
47     if (g_watch_size[i].value == 0)
48       break;
49     if (watch_size == g_watch_size[i].value)
50       return true;
51   }
52   return false;
53 }
54 
55 OptionGroupWatchpoint::OptionGroupWatchpoint() : OptionGroup() {}
56 
57 OptionGroupWatchpoint::~OptionGroupWatchpoint() {}
58 
59 Status
60 OptionGroupWatchpoint::SetOptionValue(uint32_t option_idx,
61                                       llvm::StringRef option_arg,
62                                       ExecutionContext *execution_context) {
63   Status error;
64   const int short_option = g_option_table[option_idx].short_option;
65   switch (short_option) {
66   case 'w': {
67     WatchType tmp_watch_type;
68     tmp_watch_type = (WatchType)Args::StringToOptionEnum(
69         option_arg, g_option_table[option_idx].enum_values, 0, error);
70     if (error.Success()) {
71       watch_type = tmp_watch_type;
72       watch_type_specified = true;
73     }
74     break;
75   }
76   case 's':
77     watch_size = (uint32_t)Args::StringToOptionEnum(
78         option_arg, g_option_table[option_idx].enum_values, 0, error);
79     break;
80 
81   default:
82     error.SetErrorStringWithFormat("unrecognized short option '%c'",
83                                    short_option);
84     break;
85   }
86 
87   return error;
88 }
89 
90 void OptionGroupWatchpoint::OptionParsingStarting(
91     ExecutionContext *execution_context) {
92   watch_type_specified = false;
93   watch_type = eWatchInvalid;
94   watch_size = 0;
95 }
96 
97 llvm::ArrayRef<OptionDefinition> OptionGroupWatchpoint::GetDefinitions() {
98   return llvm::makeArrayRef(g_option_table);
99 }
100