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//===-- GDBRemote.cpp -----------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include "lldb/Utility/GDBRemote.h"
#include "lldb/Utility/Flags.h"
#include "lldb/Utility/Stream.h"
#include <stdio.h>
using namespace lldb;
using namespace lldb_private::repro;
using namespace lldb_private;
using namespace llvm;
StreamGDBRemote::StreamGDBRemote() : StreamString() {}
StreamGDBRemote::StreamGDBRemote(uint32_t flags, uint32_t addr_size,
ByteOrder byte_order)
: StreamString(flags, addr_size, byte_order) {}
StreamGDBRemote::~StreamGDBRemote() {}
int StreamGDBRemote::PutEscapedBytes(const void *s, size_t src_len) {
int bytes_written = 0;
const uint8_t *src = static_cast<const uint8_t *>(s);
bool binary_is_set = m_flags.Test(eBinary);
m_flags.Clear(eBinary);
while (src_len) {
uint8_t byte = *src;
src++;
src_len--;
if (byte == 0x23 || byte == 0x24 || byte == 0x7d || byte == 0x2a) {
bytes_written += PutChar(0x7d);
byte ^= 0x20;
}
bytes_written += PutChar(byte);
};
if (binary_is_set)
m_flags.Set(eBinary);
return bytes_written;
}
llvm::StringRef GDBRemotePacket::GetTypeStr() const {
switch (type) {
case GDBRemotePacket::ePacketTypeSend:
return "send";
case GDBRemotePacket::ePacketTypeRecv:
return "read";
case GDBRemotePacket::ePacketTypeInvalid:
return "invalid";
}
llvm_unreachable("All enum cases should be handled");
}
void GDBRemotePacket::Dump(Stream &strm) const {
strm.Printf("tid=0x%4.4" PRIx64 " <%4u> %s packet: %s\n", tid,
bytes_transmitted, GetTypeStr().data(), packet.data.c_str());
}
void yaml::ScalarEnumerationTraits<GDBRemotePacket::Type>::enumeration(
IO &io, GDBRemotePacket::Type &value) {
io.enumCase(value, "Invalid", GDBRemotePacket::ePacketTypeInvalid);
io.enumCase(value, "Send", GDBRemotePacket::ePacketTypeSend);
io.enumCase(value, "Recv", GDBRemotePacket::ePacketTypeRecv);
}
void yaml::ScalarTraits<GDBRemotePacket::BinaryData>::output(
const GDBRemotePacket::BinaryData &Val, void *, raw_ostream &Out) {
Out << toHex(Val.data);
}
StringRef yaml::ScalarTraits<GDBRemotePacket::BinaryData>::input(
StringRef Scalar, void *, GDBRemotePacket::BinaryData &Val) {
Val.data = fromHex(Scalar);
return {};
}
void yaml::MappingTraits<GDBRemotePacket>::mapping(IO &io,
GDBRemotePacket &Packet) {
io.mapRequired("packet", Packet.packet);
io.mapRequired("type", Packet.type);
io.mapRequired("bytes", Packet.bytes_transmitted);
io.mapRequired("index", Packet.packet_idx);
io.mapRequired("tid", Packet.tid);
}
StringRef
yaml::MappingTraits<GDBRemotePacket>::validate(IO &io,
GDBRemotePacket &Packet) {
return {};
}
void GDBRemoteProvider::Keep() {
std::vector<std::string> files;
for (auto &recorder : m_packet_recorders) {
files.push_back(recorder->GetFilename().GetPath());
}
FileSpec file = GetRoot().CopyByAppendingPathComponent(Info::file);
std::error_code ec;
llvm::raw_fd_ostream os(file.GetPath(), ec, llvm::sys::fs::OF_Text);
if (ec)
return;
yaml::Output yout(os);
yout << files;
}
void GDBRemoteProvider::Discard() { m_packet_recorders.clear(); }
llvm::Expected<std::unique_ptr<PacketRecorder>>
PacketRecorder::Create(const FileSpec &filename) {
std::error_code ec;
auto recorder = std::make_unique<PacketRecorder>(std::move(filename), ec);
if (ec)
return llvm::errorCodeToError(ec);
return std::move(recorder);
}
PacketRecorder *GDBRemoteProvider::GetNewPacketRecorder() {
std::size_t i = m_packet_recorders.size() + 1;
std::string filename = (llvm::Twine(Info::name) + llvm::Twine("-") +
llvm::Twine(i) + llvm::Twine(".yaml"))
.str();
auto recorder_or_error =
PacketRecorder::Create(GetRoot().CopyByAppendingPathComponent(filename));
if (!recorder_or_error) {
llvm::consumeError(recorder_or_error.takeError());
return nullptr;
}
m_packet_recorders.push_back(std::move(*recorder_or_error));
return m_packet_recorders.back().get();
}
void PacketRecorder::Record(const GDBRemotePacket &packet) {
if (!m_record)
return;
yaml::Output yout(m_os);
yout << const_cast<GDBRemotePacket &>(packet);
m_os.flush();
}
llvm::raw_ostream *GDBRemoteProvider::GetHistoryStream() {
FileSpec history_file = GetRoot().CopyByAppendingPathComponent(Info::file);
std::error_code EC;
m_stream_up = std::make_unique<raw_fd_ostream>(history_file.GetPath(), EC,
sys::fs::OpenFlags::OF_Text);
return m_stream_up.get();
}
char GDBRemoteProvider::ID = 0;
const char *GDBRemoteProvider::Info::file = "gdb-remote.yaml";
const char *GDBRemoteProvider::Info::name = "gdb-remote";
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