mirrors/qemu
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

add isa-debug-exit device.

Browse Source 
When present it makes qemu exit on any write.
Mapped to port 0x501 by default.

Without this patch Anthony doesn't allow me to
remove the bochs bios debug ports because his
test suite uses this.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
This commit is contained in:
Gerd Hoffmann 2012-12-12 15:54:59 +01:00
parent e8ba1ce92d
commit bb355b1859
2 changed files with 76 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

75
hw/debugexit.c Normal file
View File

@ -0,0 +1,75 @@
/*
* debug exit port emulation
*
* 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 or
* (at your option) any later version.
*/
#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;
uint32_t iosize;
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 = 4,
.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->iosize);
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_HEX32("iosize", ISADebugExitState, iosize, 0x02),
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 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)

2
hw/i386/Makefile.objs
View File

@ -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/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