GDB debug protocol that IDA can connect to.

Unfortunately, IDA sucks, and this likely won't ever work right.

src/xenia/debug/protocols/gdb/message.cc

@@ -0,0 +1,90 @@
+/**
+ ******************************************************************************
+ * Xenia : Xbox 360 Emulator Research Project                                 *
+ ******************************************************************************
+ * Copyright 2013 Ben Vanik. All rights reserved.                             *
+ * Released under the BSD license - see LICENSE in the root for more details. *
+ ******************************************************************************
+ */
+
+#include <xenia/debug/protocols/gdb/message.h>
+
+
+using namespace xe;
+using namespace xe::debug;
+using namespace xe::debug::protocols::gdb;
+
+
+MessageReader::MessageReader() {
+  Reset();
+}
+
+MessageReader::~MessageReader() {
+}
+
+void MessageReader::Reset() {
+  buffer_.Reset();
+}
+
+void MessageReader::Append(const uint8_t* buffer, size_t length) {
+  buffer_.AppendBytes(buffer, length);
+}
+
+bool MessageReader::CheckComplete() {
+  // TODO(benvanik): verify checksum.
+  return true;
+}
+
+const char* MessageReader::GetString() {
+  return buffer_.GetString();
+}
+
+
+MessageWriter::MessageWriter() :
+    offset_(0) {
+  Reset();
+}
+
+MessageWriter::~MessageWriter() {
+}
+
+const uint8_t* MessageWriter::buffer() const {
+  return (const uint8_t*)buffer_.GetString();
+}
+
+size_t MessageWriter::length() const {
+  return buffer_.length() + 1;
+}
+
+void MessageWriter::Reset() {
+  buffer_.Reset();
+  buffer_.Append("$");
+  offset_ = 0;
+}
+
+void MessageWriter::Append(const char* format, ...) {
+  va_list args;
+  va_start(args, format);
+  buffer_.AppendVarargs(format, args);
+  va_end(args);
+}
+
+void MessageWriter::AppendVarargs(const char* format, va_list args) {
+  buffer_.AppendVarargs(format, args);
+}
+
+void MessageWriter::Finalize() {
+  uint8_t checksum = 0;
+  const uint8_t* data = (const uint8_t*)buffer_.GetString();
+  data++; // skip $
+  while (true) {
+    uint8_t c = *data;
+    if (!c) {
+      break;
+    }
+    checksum += c;
+    data++;
+  }
+
+  buffer_.Append("#%.2X", checksum);
+}