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/*
* debugserver.cc: handle usecode debugging messages from client
*
* Copyright (C) 2002 The Exult Team
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#if (defined(USE_EXULTSTUDIO) && defined(USECODE_DEBUGGER))
#include <iostream>
#include <iomanip>
#include "servemsg.h"
#include "server.h"
#include "gamewin.h"
#include "ucinternal.h"
#include "debugserver.h"
#include "debugmsg.h"
#include "ucdebugging.h"
#include "utils.h"
#include "stackframe.h"
#include "ucserial.h"
#include "useval.h"
#include "ucfunction.h"
// message handler that only handles debugging messages.
void Handle_client_debug_message(int& fd)
{
unsigned char data[Exult_server::maxlength];
Exult_server::Msg_type id;
int datalen = Exult_server::Receive_data(fd, id, data, sizeof(data));
if (datalen < 0)
return;
switch (id) {
case Exult_server::usecode_debugging:
Handle_debug_message(&data[0], datalen);
break;
default:
// maybe reply something like "unable to handle message" ?
break;
}
}
void Handle_debug_message(unsigned char* data, int datalen)
{
Usecode_machine *ucm = Game_window::get_instance()->get_usecode();
Usecode_internal *uci = dynamic_cast<Usecode_internal*>(ucm);
if (uci == 0)
return; // huh?
Exult_server::Debug_msg_type id = (Exult_server::Debug_msg_type)data[0];
unsigned char *ptr = data;
if (uci->is_on_breakpoint()) {
// accept extra messages now
switch(id) {
case Exult_server::dbg_continue:
uci->set_breakpoint_action(0);
break;
case Exult_server::dbg_stepinto:
uci->set_breakpoint_action(0);
uci->set_breakpoint();
break;
case Exult_server::dbg_stepover:
uci->set_breakpoint_action(0);
uci->dbg_stepover();
break;
case Exult_server::dbg_finish:
uci->set_breakpoint_action(0);
uci->dbg_finish();
break;
case Exult_server::dbg_get_callstack:
{
unsigned char d[3];
d[0] = (unsigned char)Exult_server::dbg_callstack;
unsigned char* ptr = &d[1];
int callstacksize = uci->get_callstack_size();
Write2(ptr, callstacksize);
Exult_server::Send_data(client_socket,
Exult_server::usecode_debugging,
d, 3);
for (int i=0; i < callstacksize; i++) {
Stack_frame *frame = uci->get_stackframe(i);
Stack_frame_out(client_socket,
frame->function->id,
(int)(frame->ip - frame->code),
frame->call_chain,
frame->call_depth,
frame->eventid,
(long)frame->caller_item,
frame->num_args,
frame->num_vars,
frame->locals);
}
break;
}
case Exult_server::dbg_get_stack:
{
Usecode_value zeroval((int)0);
unsigned char data[Exult_server::maxlength];
unsigned char* ptr = &data[0];
*ptr++ = (unsigned char)Exult_server::dbg_stack;
int stacksize = uci->get_stack_size();
Write2(ptr, stacksize);
int remaining = Exult_server::maxlength - 3;
for (int i=0; i < stacksize; i++) {
Usecode_value* val = uci->peek_stack(i);
int vallen = -1;
if (val) {
vallen = val->save(ptr, remaining);
}
if (vallen == -1) {
if (remaining >= 5)
vallen = zeroval.save(ptr, remaining);
std::cerr << "Error: stack larger than max. message!"
<< std::endl;
}
if (vallen != -1) {
remaining -= vallen;
ptr += vallen;
}
}
Exult_server::Send_data(client_socket,
Exult_server::usecode_debugging,
data, Exult_server::maxlength - remaining);
break;
}
default:
break;
}
}
// these messages can always be handled
switch(id) {
case Exult_server::dbg_break:
uci->set_breakpoint();
break;
case Exult_server::dbg_get_status:
{
unsigned char c;
if (uci->is_on_breakpoint()) {
c = (unsigned char)Exult_server::dbg_on_breakpoint;
} else {
c = (unsigned char)Exult_server::dbg_continuing;
}
Exult_server::Send_data(client_socket,
Exult_server::usecode_debugging,
&c, 1);
break;
}
case Exult_server::dbg_set_location_bp:
{
ptr++;
int funcid = Read4(ptr);
int ip = Read4(ptr);
std::cout << "Setting breakpoint at " << std::hex << std::setfill('0')
<< std::setw(4) << funcid << ", " << std::setw(4) << ip
<< std::setfill(' ') << std::dec << std::endl;
// +++++ check for duplicates?
int breakpoint_id = uci->set_location_breakpoint(funcid, ip);
unsigned char d[13];
d[0] = (unsigned char)(Exult_server::dbg_set_location_bp);
unsigned char *dptr = &d[1];
Write4(dptr, funcid);
Write4(dptr, ip);
Write4(dptr, breakpoint_id);
Exult_server::Send_data(client_socket,
Exult_server::usecode_debugging,
d, 13);
break;
}
case Exult_server::dbg_clear_breakpoint:
{
ptr++;
int breakpoint_id = Read4(ptr);
bool ok = uci->clear_breakpoint(breakpoint_id);
if (ok) {
// reply
Exult_server::Send_data(client_socket,
Exult_server::usecode_debugging,
data, 5);
}
break;
}
case Exult_server::dbg_get_breakpoints:
{
uci->transmit_breakpoints(client_socket);
break;
}
default:
break;
}
}
#endif
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