Convince GDB that it is connected

1 files changed, 20 insertions, 3 deletions

diff --git a/gdbremote.cpp b/gdbremote.cpp
index a093192..eb0fed8 100644
--- a/gdbremote.cpp
+++ b/gdbremote.cpp
@@ -56,6 +56,24 @@ static int setup_socket(uint16_t port)
     return socket_fd;
 }
 
+static std::string CreateResponse(const GDBRemote::Packet& packet)
+{
+    using namespace GDBRemote;
+    if (0) {
+    } else if (packet.type == PacketType::kQueryHaltReason) {
+        return "S05";
+    } else if (packet.type == PacketType::kSetThreadForCont) {
+        return "OK";
+    } else if (packet.type == PacketType::kQueryAttached) {
+        return "1";
+    } else if (packet.type == PacketType::kInterrupt) {
+        return "OK";
+    } else if (packet.type == PacketType::kReadGeneralRegisters) {
+        return std::string(2*4*17, '0') + "00000200"; // 17 registers + PC
+    }
+    return "";
+}
+
 int main(int argc, char *argv[])
 {
     const int port = argc > 1 ? atoi(argv[1]) : 3333;
@@ -94,9 +112,8 @@ int main(int argc, char *argv[])
             }
             if (res->packet.length() > 0) {
                 const auto packet = GDBRemote::Packet::Parse(res->packet);
-
-                (void) packet;
-                const auto response = exchange_ctx.WrapDataToSend();
+                const auto response =
+                    exchange_ctx.WrapDataToSend(CreateResponse(packet));
                 printf("-> \"%s\"\n", response.c_str());
                 if (send(conn_fd, &response[0], response.length(), 0) == -1)
                     perror("Send failed (response)");