Jim Flynn | bbfe603 | 2020-07-20 16:57:44 +0100 | [diff] [blame] | 1 | // |
| 2 | // Copyright © 2020 Arm Ltd and Contributors. All rights reserved. |
| 3 | // SPDX-License-Identifier: MIT |
| 4 | // |
| 5 | |
| 6 | #include <common/include/CommonProfilingUtils.hpp> |
| 7 | #include <common/include/NumericCast.hpp> |
| 8 | #include <common/include/ProfilingException.hpp> |
| 9 | #include <common/include/SwTrace.hpp> |
| 10 | |
| 11 | #include <sstream> |
| 12 | |
| 13 | namespace arm |
| 14 | { |
| 15 | |
| 16 | namespace pipe |
| 17 | { |
| 18 | |
| 19 | // Calculate the actual length an SwString will be including the terminating null character |
| 20 | // padding to bring it to the next uint32_t boundary but minus the leading uint32_t encoding |
| 21 | // the size to allow the offset to be correctly updated when decoding a binary packet. |
| 22 | uint32_t CalculateSizeOfPaddedSwString(const std::string& str) |
| 23 | { |
| 24 | std::vector<uint32_t> swTraceString; |
| 25 | StringToSwTraceString<SwTraceCharPolicy>(str, swTraceString); |
| 26 | unsigned int uint32_t_size = sizeof(uint32_t); |
| 27 | uint32_t size = (numeric_cast<uint32_t>(swTraceString.size()) - 1) * uint32_t_size; |
| 28 | return size; |
| 29 | } |
| 30 | |
| 31 | // Read TimelineMessageDirectoryPacket from given IPacketBuffer and offset |
| 32 | SwTraceMessage ReadSwTraceMessage(const unsigned char* packetBuffer, |
| 33 | unsigned int& offset, |
| 34 | const unsigned int& packetLength) |
| 35 | { |
| 36 | ARM_PIPE_ASSERT(packetBuffer); |
| 37 | |
| 38 | unsigned int uint32_t_size = sizeof(uint32_t); |
| 39 | |
| 40 | SwTraceMessage swTraceMessage; |
| 41 | |
| 42 | // Read the decl_id |
| 43 | uint32_t readDeclId = ReadUint32(packetBuffer, offset); |
| 44 | swTraceMessage.m_Id = readDeclId; |
| 45 | |
| 46 | // SWTrace "namestring" format |
| 47 | // length of the string (first 4 bytes) + string + null terminator |
| 48 | |
| 49 | // Check the decl_name |
| 50 | offset += uint32_t_size; |
| 51 | uint32_t swTraceDeclNameLength = ReadUint32(packetBuffer, offset); |
| 52 | |
| 53 | if (swTraceDeclNameLength == 0 || swTraceDeclNameLength > packetLength) |
| 54 | { |
| 55 | throw arm::pipe::ProfilingException("Error swTraceDeclNameLength is an invalid size", LOCATION()); |
| 56 | } |
| 57 | |
| 58 | offset += uint32_t_size; |
| 59 | std::vector<unsigned char> swTraceStringBuffer(swTraceDeclNameLength - 1); |
| 60 | std::memcpy(swTraceStringBuffer.data(), |
| 61 | packetBuffer + offset, swTraceStringBuffer.size()); |
| 62 | |
| 63 | swTraceMessage.m_Name.assign(swTraceStringBuffer.begin(), swTraceStringBuffer.end()); // name |
| 64 | |
| 65 | // Check the ui_name |
| 66 | offset += CalculateSizeOfPaddedSwString(swTraceMessage.m_Name); |
| 67 | uint32_t swTraceUINameLength = ReadUint32(packetBuffer, offset); |
| 68 | |
| 69 | if (swTraceUINameLength == 0 || swTraceUINameLength > packetLength) |
| 70 | { |
| 71 | throw arm::pipe::ProfilingException("Error swTraceUINameLength is an invalid size", LOCATION()); |
| 72 | } |
| 73 | |
| 74 | offset += uint32_t_size; |
| 75 | swTraceStringBuffer.resize(swTraceUINameLength - 1); |
| 76 | std::memcpy(swTraceStringBuffer.data(), |
| 77 | packetBuffer + offset, swTraceStringBuffer.size()); |
| 78 | |
| 79 | swTraceMessage.m_UiName.assign(swTraceStringBuffer.begin(), swTraceStringBuffer.end()); // ui_name |
| 80 | |
| 81 | // Check arg_types |
| 82 | offset += CalculateSizeOfPaddedSwString(swTraceMessage.m_UiName); |
| 83 | uint32_t swTraceArgTypesLength = ReadUint32(packetBuffer, offset); |
| 84 | |
| 85 | if (swTraceArgTypesLength == 0 || swTraceArgTypesLength > packetLength) |
| 86 | { |
| 87 | throw arm::pipe::ProfilingException("Error swTraceArgTypesLength is an invalid size", LOCATION()); |
| 88 | } |
| 89 | |
| 90 | offset += uint32_t_size; |
| 91 | swTraceStringBuffer.resize(swTraceArgTypesLength - 1); |
| 92 | std::memcpy(swTraceStringBuffer.data(), |
| 93 | packetBuffer + offset, swTraceStringBuffer.size()); |
| 94 | |
| 95 | swTraceMessage.m_ArgTypes.assign(swTraceStringBuffer.begin(), swTraceStringBuffer.end()); // arg_types |
| 96 | |
| 97 | std::string swTraceString(swTraceStringBuffer.begin(), swTraceStringBuffer.end()); |
| 98 | |
| 99 | // Check arg_names |
| 100 | offset += CalculateSizeOfPaddedSwString(swTraceString); |
| 101 | uint32_t swTraceArgNamesLength = ReadUint32(packetBuffer, offset); |
| 102 | |
| 103 | if (swTraceArgNamesLength == 0 || swTraceArgNamesLength > packetLength) |
| 104 | { |
| 105 | throw arm::pipe::ProfilingException("Error swTraceArgNamesLength is an invalid size", LOCATION()); |
| 106 | } |
| 107 | |
| 108 | offset += uint32_t_size; |
| 109 | swTraceStringBuffer.resize(swTraceArgNamesLength - 1); |
| 110 | std::memcpy(swTraceStringBuffer.data(), |
| 111 | packetBuffer + offset, swTraceStringBuffer.size()); |
| 112 | |
| 113 | swTraceString.assign(swTraceStringBuffer.begin(), swTraceStringBuffer.end()); |
| 114 | std::stringstream stringStream(swTraceString); |
| 115 | std::string argName; |
| 116 | while (std::getline(stringStream, argName, ',')) |
| 117 | { |
| 118 | swTraceMessage.m_ArgNames.push_back(argName); |
| 119 | } |
| 120 | |
| 121 | offset += CalculateSizeOfPaddedSwString(swTraceString); |
| 122 | |
| 123 | return swTraceMessage; |
| 124 | } |
| 125 | |
| 126 | } // namespace pipe |
| 127 | |
| 128 | } // namespace arm |