1 //===-- OptionGroupWatchpoint.cpp -------------------------------*- C++ -*-===// 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 9 #include "lldb/Interpreter/OptionGroupWatchpoint.h" 10 11 #include "lldb/Host/OptionParser.h" 12 #include "lldb/Interpreter/OptionArgParser.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 {OptionGroupWatchpoint::eWatchRead, "read", "Watch for read"}, 20 {OptionGroupWatchpoint::eWatchWrite, "write", "Watch for write"}, 21 {OptionGroupWatchpoint::eWatchReadWrite, "read_write", 22 "Watch for read/write"} }; 23 24 static constexpr OptionEnumValueElement g_watch_size[] = { 25 {1, "1", "Watch for byte size of 1"}, 26 {2, "2", "Watch for byte size of 2"}, 27 {4, "4", "Watch for byte size of 4"}, 28 {8, "8", "Watch for byte size of 8"} }; 29 30 static constexpr OptionDefinition g_option_table[] = { 31 {LLDB_OPT_SET_1, false, "watch", 'w', OptionParser::eRequiredArgument, 32 nullptr, OptionEnumValues(g_watch_type), 0, eArgTypeWatchType, 33 "Specify the type of watching to perform."}, 34 {LLDB_OPT_SET_1, false, "size", 's', OptionParser::eRequiredArgument, 35 nullptr, OptionEnumValues(g_watch_size), 0, eArgTypeByteSize, 36 "Number of bytes to use to watch a region."}}; 37 38 bool OptionGroupWatchpoint::IsWatchSizeSupported(uint32_t watch_size) { 39 for (const auto& size : g_watch_size) { 40 if (0 == size.value) 41 break; 42 if (watch_size == size.value) 43 return true; 44 } 45 return false; 46 } 47 48 OptionGroupWatchpoint::OptionGroupWatchpoint() : OptionGroup() {} 49 50 OptionGroupWatchpoint::~OptionGroupWatchpoint() {} 51 52 Status 53 OptionGroupWatchpoint::SetOptionValue(uint32_t option_idx, 54 llvm::StringRef option_arg, 55 ExecutionContext *execution_context) { 56 Status error; 57 const int short_option = g_option_table[option_idx].short_option; 58 switch (short_option) { 59 case 'w': { 60 WatchType tmp_watch_type; 61 tmp_watch_type = (WatchType)OptionArgParser::ToOptionEnum( 62 option_arg, g_option_table[option_idx].enum_values, 0, error); 63 if (error.Success()) { 64 watch_type = tmp_watch_type; 65 watch_type_specified = true; 66 } 67 break; 68 } 69 case 's': 70 watch_size = (uint32_t)OptionArgParser::ToOptionEnum( 71 option_arg, g_option_table[option_idx].enum_values, 0, error); 72 break; 73 74 default: 75 error.SetErrorStringWithFormat("unrecognized short option '%c'", 76 short_option); 77 break; 78 } 79 80 return error; 81 } 82 83 void OptionGroupWatchpoint::OptionParsingStarting( 84 ExecutionContext *execution_context) { 85 watch_type_specified = false; 86 watch_type = eWatchInvalid; 87 watch_size = 0; 88 } 89 90 llvm::ArrayRef<OptionDefinition> OptionGroupWatchpoint::GetDefinitions() { 91 return llvm::makeArrayRef(g_option_table); 92 } 93