From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([208.118.235.92]:52152) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1SnGSD-0006Yh-O8 for qemu-devel@nongnu.org; Fri, 06 Jul 2012 17:52:48 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1SnGSB-0006m8-JD for qemu-devel@nongnu.org; Fri, 06 Jul 2012 17:52:45 -0400 Received: from smtp1-g21.free.fr ([212.27.42.1]:33302) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1SnGSB-0006ht-0R for qemu-devel@nongnu.org; Fri, 06 Jul 2012 17:52:43 -0400 From: =?UTF-8?q?Herv=C3=A9=20Poussineau?= Date: Fri, 6 Jul 2012 23:53:13 +0200 Message-Id: <1341611595-9847-1-git-send-email-hpoussin@reactos.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Subject: [Qemu-devel] [PATCH 1/2] debugexit: support for custom exit port (e.g LGPL'ed VGA BIOS port 0x501) List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: Anthony Liguori , =?UTF-8?q?Herv=C3=A9=20Poussineau?= Add generic support for simple I/O port which, when written to, cause QEMU to exit with the given written value. There is no vmstate associated with the debugging port, simply because the entire interface is a single, stateless, write-only port. Signed-off-by: Herv=C3=A9 Poussineau --- hw/debugexit.c | 68 +++++++++++++++++++++++++++++++++++++++++++= ++++++ hw/i386/Makefile.objs | 2 +- 2 files changed, 69 insertions(+), 1 deletion(-) create mode 100644 hw/debugexit.c diff --git a/hw/debugexit.c b/hw/debugexit.c new file mode 100644 index 0000000..72ddf31 --- /dev/null +++ b/hw/debugexit.c @@ -0,0 +1,68 @@ +/* + * QEMU debug exit port ("LGPL'ed-VGA-BIOS-style port 501/502") emulatio= n + * + * Copyright (c) 2012 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 you= r + * 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 alo= ng + * with this program; if not, see . + */ + +#include "isa.h" + +typedef struct ISADebugExitState { + ISADevice dev; + uint32_t iobase; + uint8_t access_size; +} ISADebugExitState; + +static void debugexit_ioport_write(void *opaque, uint32_t addr, uint32_t= val) +{ + exit((val << 1) | 1); +} + +static int debugexit_isa_initfn(ISADevice *dev) +{ + ISADebugExitState *isa =3D DO_UPCAST(ISADebugExitState, dev, dev); + + register_ioport_write(isa->iobase, 1, isa->access_size, + debugexit_ioport_write, NULL); + return 0; +} + +static Property debugexit_isa_properties[] =3D { + DEFINE_PROP_HEX32("iobase", ISADebugExitState, iobase, 0x501), + DEFINE_PROP_UINT8("access-size", ISADebugExitState, access_size, 1), + DEFINE_PROP_END_OF_LIST(), +}; + +static void debugexit_isa_class_initfn(ObjectClass *klass, void *data) +{ + DeviceClass *dc =3D DEVICE_CLASS(klass); + ISADeviceClass *ic =3D ISA_DEVICE_CLASS(klass); + ic->init =3D debugexit_isa_initfn; + dc->props =3D debugexit_isa_properties; +} + +static TypeInfo debugexit_isa_info =3D { + .name =3D "isa-debugexit", + .parent =3D TYPE_ISA_DEVICE, + .instance_size =3D sizeof(ISADebugExitState), + .class_init =3D debugexit_isa_class_initfn, +}; + +static void debugexit_register_types(void) +{ + type_register_static(&debugexit_isa_info); +} + +type_init(debugexit_register_types) diff --git a/hw/i386/Makefile.objs b/hw/i386/Makefile.objs index eb171b7..23be2d3 100644 --- a/hw/i386/Makefile.objs +++ b/hw/i386/Makefile.objs @@ -3,7 +3,7 @@ obj-y +=3D apic_common.o apic.o kvmvapic.o obj-y +=3D sga.o ioapic_common.o ioapic.o piix_pci.o obj-y +=3D vmport.o obj-y +=3D pci-hotplug.o smbios.o wdt_ib700.o -obj-y +=3D debugcon.o multiboot.o +obj-y +=3D debugcon.o debugexit.o multiboot.o obj-y +=3D pc_piix.o obj-y +=3D pc_sysfw.o obj-$(CONFIG_XEN) +=3D xen_platform.o xen_apic.o --=20 1.7.10