Fail* directories reorganized, Code-cleanup (-> coding-style), Typos+comments fixed.

git-svn-id: https://www4.informatik.uni-erlangen.de/i4svn/danceos/trunk/devel/fail@1321 8c4709b5-6ec9-48aa-a5cd-a96041d1645a
2012-06-08 20:09:43 +00:00
parent d474a5b952
commit 2575604b41
866 changed files with 1848 additions and 1879 deletions
--- a/simulators/bochs/iodev/guest2host.cc
+++ b/simulators/bochs/iodev/guest2host.cc
@ -0,0 +1,135 @@
+/////////////////////////////////////////////////////////////////////////
+// $Id$
+/////////////////////////////////////////////////////////////////////////
+//
+//  Copyright (C) 2001-2009  The Bochs Project
+//
+//  This library is free software; you can redistribute it and/or
+//  modify it under the terms of the GNU Lesser General Public
+//  License as published by the Free Software Foundation; either
+//  version 2 of the License, or (at your option) any later version.
+//
+//  This library 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
+//  Lesser General Public License for more details.
+//
+//  You should have received a copy of the GNU Lesser General Public
+//  License along with this library; if not, write to the Free Software
+//  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
+/////////////////////////////////////////////////////////////////////////
+
+#include "iodev.h"
+#include "guest2host.h"
+
+#define LOG_THIS  bx_g2h.
+
+bx_g2h_c bx_g2h;
+
+bx_g2h_c::bx_g2h_c()
+{
+  put("G2H");
+  unsigned i;
+
+  for (i=0; i<BX_MAX_G2H_CHANNELS; i++) {
+    s.callback[i].f = NULL;
+    s.callback[i].used = 0;
+  }
+}
+
+bx_g2h_c::~bx_g2h_c()
+{
+  // nothing for now
+}
+
+void bx_g2h_c::init(void)
+{
+  BX_DEBUG(("Init $Id$"));
+  // Reserve a dword port for this interface
+  for (Bit32u addr=BX_G2H_PORT; addr<=(BX_G2H_PORT+3); addr++) {
+    bx_devices.register_io_read_handler(&bx_g2h,
+      inp_handler, addr, "g2h");
+    bx_devices.register_io_write_handler(&bx_g2h,
+      outp_handler, addr, "g2h");
+  }
+  memset(&bx_g2h.s, 0, sizeof(bx_g2h.s));
+}
+
+void bx_g2h_c::reset(unsigned type)
+{
+}
+
+unsigned bx_g2h_c::acquire_channel(bx_g2h_callback_t f)
+{
+  unsigned i;
+
+  for (i=0; i<BX_MAX_G2H_CHANNELS; i++) {
+    if (bx_g2h.s.callback[i].used==0) {
+      bx_g2h.s.callback[i].f = f;
+      bx_g2h.s.callback[i].used = 1;
+      return(i);
+    }
+  }
+
+  BX_INFO(("g2h: attempt to acquire channel: maxed out"));
+  return BX_G2H_ERROR; // No more free channels
+}
+
+unsigned bx_g2h_c::deacquire_channel(unsigned channel)
+{
+  if ((channel >= BX_MAX_G2H_CHANNELS) ||
+      (bx_g2h.s.callback[channel].used==0))
+  {
+    BX_PANIC(("g2h: attempt to deacquire channel %u: not acquired", channel));
+  }
+  bx_g2h.s.callback[channel].used = 0;
+  bx_g2h.s.callback[channel].f = NULL;
+  return 0;
+}
+
+
+// static IO port read callback handler
+// redirects to non-static class handler to avoid virtual functions
+
+Bit32u bx_g2h_c::inp_handler(void *this_ptr, Bit32u addr, unsigned io_len)
+{
+  UNUSED(this_ptr);
+
+  if (addr != BX_G2H_PORT)
+    BX_PANIC(("g2h: IO read not aligned on dword boundary."));
+  if (io_len != 4)
+    BX_PANIC(("g2h: IO read not dword."));
+
+  BX_PANIC(("g2h: IO read not complete."));
+  return(0);
+}
+
+void bx_g2h_c::outp_handler(void *this_ptr, Bit32u addr, Bit32u val32, unsigned io_len)
+{
+  UNUSED(this_ptr);
+
+  if (addr != BX_G2H_PORT)
+    BX_PANIC(("g2h: IO write not aligned on dword boundary."));
+  if (io_len != 4)
+    BX_PANIC(("g2h: IO write not dword."));
+
+  if ((bx_g2h.s.packet_count==0) && (val32!=BX_G2H_MAGIC)) {
+    BX_INFO(("g2h: IO W: Not magic header."));
+    return;
+  }
+  bx_g2h.s.guest_packet[bx_g2h.s.packet_count++] = val32;
+  if (bx_g2h.s.packet_count >= BX_G2H_PACKET_SIZE) {
+    unsigned channel;
+
+    // Full packet received from guest.  Pass on to the host code.
+    channel = bx_g2h.s.guest_packet[1];
+    if (channel >= BX_MAX_G2H_CHANNELS) {
+      BX_PANIC(("g2h: channel (%u) out of bounds", channel));
+    }
+    if (bx_g2h.s.callback[channel].used==0) {
+      BX_PANIC(("g2h: channel (%u) not active", channel));
+    }
+    bx_g2h.s.callback[channel].f(&bx_g2h.s.guest_packet);
+    bx_g2h.s.packet_count = 0; // Ready for next packet
+  }
+}