6e42be7cd1
A transition from CPUFooState to FooCPU can be considered safe,
just like FooCPU::env access in the opposite direction.
The only benefit of the FOO_CPU() casts would be protection against
bogus CPUFooState pointers, but then surrounding code would likely
break, too.
This should slightly improve interrupt etc. performance when going from
CPUFooState to FooCPU.
For any additional CPU() casts see 3556c233d9
(qom: allow turning cast debugging off).
Reported-by: Anthony Liguori <aliguori@us.ibm.com>
Acked-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Andreas Färber <afaerber@suse.de>
79 lines
2 KiB
C
79 lines
2 KiB
C
/*
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* QEMU S/390 CPU
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*
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* Copyright (c) 2012 SUSE LINUX Products GmbH
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, see
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* <http://www.gnu.org/licenses/lgpl-2.1.html>
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*/
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#ifndef QEMU_S390_CPU_QOM_H
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#define QEMU_S390_CPU_QOM_H
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#include "qom/cpu.h"
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#include "cpu.h"
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#define TYPE_S390_CPU "s390-cpu"
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#define S390_CPU_CLASS(klass) \
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OBJECT_CLASS_CHECK(S390CPUClass, (klass), TYPE_S390_CPU)
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#define S390_CPU(obj) \
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OBJECT_CHECK(S390CPU, (obj), TYPE_S390_CPU)
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#define S390_CPU_GET_CLASS(obj) \
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OBJECT_GET_CLASS(S390CPUClass, (obj), TYPE_S390_CPU)
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/**
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* S390CPUClass:
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* @parent_realize: The parent class' realize handler.
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* @parent_reset: The parent class' reset handler.
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*
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* An S/390 CPU model.
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*/
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typedef struct S390CPUClass {
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/*< private >*/
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CPUClass parent_class;
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/*< public >*/
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DeviceRealize parent_realize;
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void (*parent_reset)(CPUState *cpu);
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} S390CPUClass;
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/**
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* S390CPU:
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* @env: #CPUS390XState.
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*
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* An S/390 CPU.
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*/
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typedef struct S390CPU {
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/*< private >*/
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CPUState parent_obj;
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/*< public >*/
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CPUS390XState env;
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} S390CPU;
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static inline S390CPU *s390_env_get_cpu(CPUS390XState *env)
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{
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return container_of(env, S390CPU, env);
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}
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#define ENV_GET_CPU(e) CPU(s390_env_get_cpu(e))
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#define ENV_OFFSET offsetof(S390CPU, env)
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void s390_cpu_do_interrupt(CPUState *cpu);
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void s390_cpu_dump_state(CPUState *cpu, FILE *f, fprintf_function cpu_fprintf,
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int flags);
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#endif
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