lldb/source/Utility/GDBRemote.cpp

   1 //===-- GDBRemote.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
   9 #include "lldb/Utility/GDBRemote.h"
  10
  11 #include "lldb/Utility/Flags.h"
  12 #include "lldb/Utility/Stream.h"
  13
  14 #include <cstdio>
  15
  16 using namespace lldb;
  17 using namespace lldb_private;
  18 using namespace llvm;
  19
  20 StreamGDBRemote::StreamGDBRemote() : StreamString() {}
  21
  22 StreamGDBRemote::StreamGDBRemote(uint32_t flags, uint32_t addr_size,
  23                                  ByteOrder byte_order)
  24     : StreamString(flags, addr_size, byte_order) {}
  25
  26 StreamGDBRemote::~StreamGDBRemote() = default;
  27
  28 int StreamGDBRemote::PutEscapedBytes(const void *s, size_t src_len) {
  29   int bytes_written = 0;
  30   const uint8_t *src = static_cast<const uint8_t *>(s);
  31   bool binary_is_set = m_flags.Test(eBinary);
  32   m_flags.Clear(eBinary);
  33   while (src_len) {
  34     uint8_t byte = *src;
  35     src++;
  36     src_len--;
  37     if (byte == 0x23 || byte == 0x24 || byte == 0x7d || byte == 0x2a) {
  38       bytes_written += PutChar(0x7d);
  39       byte ^= 0x20;
  40     }
  41     bytes_written += PutChar(byte);
  42   };
  43   if (binary_is_set)
  44     m_flags.Set(eBinary);
  45   return bytes_written;
  46 }
  47
  48 llvm::StringRef GDBRemotePacket::GetTypeStr() const {
  49   switch (type) {
  50   case GDBRemotePacket::ePacketTypeSend:
  51     return "send";
  52   case GDBRemotePacket::ePacketTypeRecv:
  53     return "read";
  54   case GDBRemotePacket::ePacketTypeInvalid:
  55     return "invalid";
  56   }
  57   llvm_unreachable("All enum cases should be handled");
  58 }
  59
  60 void GDBRemotePacket::Dump(Stream &strm) const {
  61   strm.Printf("tid=0x%4.4" PRIx64 " <%4u> %s packet: %s\n", tid,
  62               bytes_transmitted, GetTypeStr().data(), packet.data.c_str());
  63 }