Re: [Qemu-devel] [PATCH] add isa-debug-exit device.

[Paolo Bonzini]

Il 12/12/2012 16:23, Gerd Hoffmann ha scritto:
> 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.

Wasn't this patch submitted already by Herve' first and Lucas second? :)

Lucas, what happened to your testdev patches?

Paolo

> Signed-off-by: Gerd Hoffmann <address@hidden>
> ---
>  hw/debugexit.c        |   71 
> +++++++++++++++++++++++++++++++++++++++++++++++++
>  hw/i386/Makefile.objs |    2 +-
>  2 files changed, 72 insertions(+), 1 deletions(-)
>  create mode 100644 hw/debugexit.c
> 
> diff --git a/hw/debugexit.c b/hw/debugexit.c
> new file mode 100644
> index 0000000..e1f7570
> --- /dev/null
> +++ b/hw/debugexit.c
> @@ -0,0 +1,71 @@
> +/*
> + * 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) version 3 of the License.
> + */
> +
> +#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;
> +    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, 1);
> +    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_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)
> 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
>