LLDB  mainline
OptionGroupWatchpoint.cpp
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1 //===-- OptionGroupWatchpoint.cpp -----------------------------------------===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 
10 
11 #include "lldb/Host/OptionParser.h"
13 #include "lldb/lldb-enumerations.h"
14 
15 using namespace lldb;
16 using namespace lldb_private;
17 
18 static constexpr OptionEnumValueElement g_watch_type[] = {
19  {
20  OptionGroupWatchpoint::eWatchRead,
21  "read",
22  "Watch for read",
23  },
24  {
25  OptionGroupWatchpoint::eWatchWrite,
26  "write",
27  "Watch for write",
28  },
29  {
30  OptionGroupWatchpoint::eWatchReadWrite,
31  "read_write",
32  "Watch for read/write",
33  },
34 };
35 
36 static constexpr OptionEnumValueElement g_watch_size[] = {
37  {
38  1,
39  "1",
40  "Watch for byte size of 1",
41  },
42  {
43  2,
44  "2",
45  "Watch for byte size of 2",
46  },
47  {
48  4,
49  "4",
50  "Watch for byte size of 4",
51  },
52  {
53  8,
54  "8",
55  "Watch for byte size of 8",
56  },
57 };
58 
59 static constexpr OptionDefinition g_option_table[] = {
60  {LLDB_OPT_SET_1, false, "watch", 'w', OptionParser::eRequiredArgument,
61  nullptr, OptionEnumValues(g_watch_type), 0, eArgTypeWatchType,
62  "Specify the type of watching to perform."},
63  {LLDB_OPT_SET_1, false, "size", 's', OptionParser::eRequiredArgument,
64  nullptr, OptionEnumValues(g_watch_size), 0, eArgTypeByteSize,
65  "Number of bytes to use to watch a region."}};
66 
67 bool OptionGroupWatchpoint::IsWatchSizeSupported(uint32_t watch_size) {
68  for (const auto& size : g_watch_size) {
69  if (0 == size.value)
70  break;
71  if (watch_size == size.value)
72  return true;
73  }
74  return false;
75 }
76 
77 Status
78 OptionGroupWatchpoint::SetOptionValue(uint32_t option_idx,
79  llvm::StringRef option_arg,
80  ExecutionContext *execution_context) {
81  Status error;
82  const int short_option = g_option_table[option_idx].short_option;
83  switch (short_option) {
84  case 'w': {
85  WatchType tmp_watch_type;
86  tmp_watch_type = (WatchType)OptionArgParser::ToOptionEnum(
87  option_arg, g_option_table[option_idx].enum_values, 0, error);
88  if (error.Success()) {
89  watch_type = tmp_watch_type;
90  watch_type_specified = true;
91  }
92  break;
93  }
94  case 's':
95  watch_size = (uint32_t)OptionArgParser::ToOptionEnum(
96  option_arg, g_option_table[option_idx].enum_values, 0, error);
97  break;
98 
99  default:
100  llvm_unreachable("Unimplemented option");
101  }
102 
103  return error;
104 }
105 
106 void OptionGroupWatchpoint::OptionParsingStarting(
107  ExecutionContext *execution_context) {
108  watch_type_specified = false;
109  watch_type = eWatchInvalid;
110  watch_size = 0;
111 }
112 
113 llvm::ArrayRef<OptionDefinition> OptionGroupWatchpoint::GetDefinitions() {
114  return llvm::makeArrayRef(g_option_table);
115 }
lldb_private::ExecutionContext
Definition: ExecutionContext.h:292
g_watch_size
static constexpr OptionEnumValueElement g_watch_size[]
Definition: OptionGroupWatchpoint.cpp:36
OptionArgParser.h
g_option_table
static constexpr OptionDefinition g_option_table[]
Definition: OptionGroupWatchpoint.cpp:59
lldb::eArgTypeByteSize
@ eArgTypeByteSize
Definition: lldb-enumerations.h:525
error
static llvm::raw_ostream & error(Stream &strm)
Definition: CommandReturnObject.cpp:17
LLDB_OPT_SET_1
#define LLDB_OPT_SET_1
Definition: lldb-defines.h:113
lldb_private::OptionGroupWatchpoint::WatchType
WatchType
Definition: OptionGroupWatchpoint.h:36
OptionGroupWatchpoint.h
lldb-enumerations.h
lldb_private::Status
Definition: Status.h:44
uint32_t
lldb::eArgTypeWatchType
@ eArgTypeWatchType
Definition: lldb-enumerations.h:599
g_watch_type
static constexpr OptionEnumValueElement g_watch_type[]
Definition: OptionGroupWatchpoint.cpp:18
OptionParser.h
lldb_private
A class that represents a running process on the host machine.
Definition: SBCommandInterpreterRunOptions.h:16
lldb_private::OptionDefinition
Definition: OptionDefinition.h:20
lldb_private::OptionDefinition::short_option
int short_option
Single character for this option.
Definition: OptionDefinition.h:32
lldb
Definition: SBAddress.h:15