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c05efcb18e
The target-specific ENV_GET_CPU() macros have allowed us to navigate from CPUArchState to CPUState. The reverse direction was not supported. Avoid introducing CPU_GET_ENV() macros by initializing an untyped pointer that is initialized in derived instance_init functions. The field may not be called "env" due to it being poisoned. Acked-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Andreas Färber <afaerber@suse.de>
123 lines
3.9 KiB
C
123 lines
3.9 KiB
C
/*
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* QEMU Xtensa CPU
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*
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* Copyright (c) 2011, Max Filippov, Open Source and Linux Lab.
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* Copyright (c) 2012 SUSE LINUX Products GmbH
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* * Neither the name of the Open Source and Linux Lab nor the
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* names of its contributors may be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "cpu.h"
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#include "qemu-common.h"
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#include "migration/vmstate.h"
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/* CPUClass::reset() */
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static void xtensa_cpu_reset(CPUState *s)
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{
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XtensaCPU *cpu = XTENSA_CPU(s);
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XtensaCPUClass *xcc = XTENSA_CPU_GET_CLASS(cpu);
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CPUXtensaState *env = &cpu->env;
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xcc->parent_reset(s);
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env->exception_taken = 0;
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env->pc = env->config->exception_vector[EXC_RESET];
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env->sregs[LITBASE] &= ~1;
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env->sregs[PS] = xtensa_option_enabled(env->config,
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XTENSA_OPTION_INTERRUPT) ? 0x1f : 0x10;
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env->sregs[VECBASE] = env->config->vecbase;
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env->sregs[IBREAKENABLE] = 0;
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env->sregs[CACHEATTR] = 0x22222222;
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env->sregs[ATOMCTL] = xtensa_option_enabled(env->config,
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XTENSA_OPTION_ATOMCTL) ? 0x28 : 0x15;
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env->pending_irq_level = 0;
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reset_mmu(env);
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}
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static void xtensa_cpu_realizefn(DeviceState *dev, Error **errp)
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{
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XtensaCPU *cpu = XTENSA_CPU(dev);
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XtensaCPUClass *xcc = XTENSA_CPU_GET_CLASS(dev);
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qemu_init_vcpu(&cpu->env);
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xcc->parent_realize(dev, errp);
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}
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static void xtensa_cpu_initfn(Object *obj)
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{
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CPUState *cs = CPU(obj);
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XtensaCPU *cpu = XTENSA_CPU(obj);
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CPUXtensaState *env = &cpu->env;
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static bool tcg_inited;
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cs->env_ptr = env;
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cpu_exec_init(env);
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if (tcg_enabled() && !tcg_inited) {
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tcg_inited = true;
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xtensa_translate_init();
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cpu_set_debug_excp_handler(xtensa_breakpoint_handler);
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}
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}
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static const VMStateDescription vmstate_xtensa_cpu = {
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.name = "cpu",
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.unmigratable = 1,
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};
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static void xtensa_cpu_class_init(ObjectClass *oc, void *data)
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{
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DeviceClass *dc = DEVICE_CLASS(oc);
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CPUClass *cc = CPU_CLASS(oc);
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XtensaCPUClass *xcc = XTENSA_CPU_CLASS(cc);
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xcc->parent_realize = dc->realize;
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dc->realize = xtensa_cpu_realizefn;
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xcc->parent_reset = cc->reset;
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cc->reset = xtensa_cpu_reset;
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dc->vmsd = &vmstate_xtensa_cpu;
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}
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static const TypeInfo xtensa_cpu_type_info = {
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.name = TYPE_XTENSA_CPU,
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.parent = TYPE_CPU,
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.instance_size = sizeof(XtensaCPU),
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.instance_init = xtensa_cpu_initfn,
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.abstract = false,
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.class_size = sizeof(XtensaCPUClass),
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.class_init = xtensa_cpu_class_init,
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};
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static void xtensa_cpu_register_types(void)
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{
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type_register_static(&xtensa_cpu_type_info);
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}
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type_init(xtensa_cpu_register_types)
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