[1/2] hw: add isa-debug-exit device v5

diff --git a/hw/debugexit.c b/hw/debugexit.c
new file mode 100644
index 0000000..b90983b
--- /dev/null
+++ b/hw/debugexit.c
@@ -0,0 +1,87 @@ 
+/*
+ * QEMU debug exit port ("LGPL'ed-VGA-BIOS-style port 501/502") emulation
+ *
+ * Copyright (c) 2012 Gerd Hoffmann
+ *
+ * (Based on previous work from Herve Poussineau)
+ *
+ * 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, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "hw.h"
+#include "isa.h"
+
+#define TYPE_ISA_DEBUG_EXIT_DEVICE "isa-debug-exit"
+#define ISA_DEBUG_EXIT_DEVICE(obj) \
+     OBJECT_CHECK(ISADebugExitState, (obj), TYPE_ISA_DEBUG_EXIT_DEVICE)
+
+typedef struct ISADebugExitState {
+    ISADevice parent_obj;
+
+    uint32_t iobase;
+    uint8_t access_size;
+    MemoryRegion io;
+} ISADebugExitState;
+
+static void debug_exit_write(void *opaque, hwaddr addr, uint64_t val,
+                             unsigned width)
+{
+    exit((val << 1) | 1);
+}
+
+static const MemoryRegionOps debug_exit_ops = {
+    .write = debug_exit_write,
+    .valid.min_access_size = 1,
+    .valid.max_access_size = 1,
+    .endianness = DEVICE_LITTLE_ENDIAN,
+};
+
+static int debug_exit_initfn(ISADevice *dev)
+{
+    ISADebugExitState *isa = ISA_DEBUG_EXIT_DEVICE(dev);
+
+    memory_region_init_io(&isa->io, &debug_exit_ops, isa,
+                          TYPE_ISA_DEBUG_EXIT_DEVICE, isa->access_size);
+    memory_region_add_subregion(isa_address_space_io(dev),
+                                isa->iobase, &isa->io);
+    return 0;
+}
+
+static Property debug_exit_properties[] = {
+    DEFINE_PROP_HEX32("iobase", ISADebugExitState, iobase, 0x501),
+    DEFINE_PROP_UINT8("access-size", ISADebugExitState, access_size, 1),
+    DEFINE_PROP_END_OF_LIST(),
+};
+
+static void debug_exit_class_initfn(ObjectClass *klass, void *data)
+{
+    DeviceClass *dc = DEVICE_CLASS(klass);
+    ISADeviceClass *ic = ISA_DEVICE_CLASS(klass);
+    ic->init = debug_exit_initfn;
+    dc->props = debug_exit_properties;
+}
+
+static const TypeInfo debug_exit_info = {
+    .name          = TYPE_ISA_DEBUG_EXIT_DEVICE,
+    .parent        = TYPE_ISA_DEVICE,
+    .instance_size = sizeof(ISADebugExitState),
+    .class_init    = debug_exit_class_initfn,
+};
+
+static void debug_exit_register_types(void)
+{
+    type_register_static(&debug_exit_info);
+}
+
+type_init(debug_exit_register_types)
diff --git a/hw/i386/Makefile.objs b/hw/i386/Makefile.objs
index 0d3f6a8..56aaa9d 100644
--- a/hw/i386/Makefile.objs
+++ b/hw/i386/Makefile.objs
@@ -3,7 +3,7 @@  obj-y += apic_common.o apic.o kvmvapic.o
 obj-y += sga.o ioapic_common.o ioapic.o piix_pci.o
 obj-y += vmport.o
 obj-y += pci-hotplug.o smbios.o wdt_ib700.o
-obj-y += debugcon.o multiboot.o
+obj-y += debugcon.o debugexit.o multiboot.o
 obj-y += pc_piix.o
 obj-y += pc_sysfw.o
 obj-y += lpc_ich9.o q35.o pc_q35.o