/* * QEMU SuperH CPU * * Copyright (c) 2005 Samuel Tardieu * Copyright (c) 2012 SUSE LINUX Products GmbH * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * This library 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 * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, see * <http://www.gnu.org/licenses/lgpl-2.1.html> */ #include "cpu.h" #include "qemu-common.h" /* CPUClass::reset() */ static void superh_cpu_reset(CPUState *s) { SuperHCPU *cpu = SUPERH_CPU(s); SuperHCPUClass *scc = SUPERH_CPU_GET_CLASS(cpu); CPUSH4State *env = &cpu->env; if (qemu_loglevel_mask(CPU_LOG_RESET)) { qemu_log("CPU Reset (CPU %d)\n", env->cpu_index); log_cpu_state(env, 0); } scc->parent_reset(s); memset(env, 0, offsetof(CPUSH4State, breakpoints)); tlb_flush(env, 1); env->pc = 0xA0000000; #if defined(CONFIG_USER_ONLY) env->fpscr = FPSCR_PR; /* value for userspace according to the kernel */ set_float_rounding_mode(float_round_nearest_even, &env->fp_status); /* ?! */ #else env->sr = SR_MD | SR_RB | SR_BL | SR_I3 | SR_I2 | SR_I1 | SR_I0; env->fpscr = FPSCR_DN | FPSCR_RM_ZERO; /* CPU reset value according to SH4 manual */ set_float_rounding_mode(float_round_to_zero, &env->fp_status); set_flush_to_zero(1, &env->fp_status); #endif set_default_nan_mode(1, &env->fp_status); } static void superh_cpu_initfn(Object *obj) { SuperHCPU *cpu = SUPERH_CPU(obj); CPUSH4State *env = &cpu->env; cpu_exec_init(env); env->movcal_backup_tail = &(env->movcal_backup); } static void superh_cpu_class_init(ObjectClass *oc, void *data) { CPUClass *cc = CPU_CLASS(oc); SuperHCPUClass *scc = SUPERH_CPU_CLASS(oc); scc->parent_reset = cc->reset; cc->reset = superh_cpu_reset; } static const TypeInfo superh_cpu_type_info = { .name = TYPE_SUPERH_CPU, .parent = TYPE_CPU, .instance_size = sizeof(SuperHCPU), .instance_init = superh_cpu_initfn, .abstract = false, .class_size = sizeof(SuperHCPUClass), .class_init = superh_cpu_class_init, }; static void superh_cpu_register_types(void) { type_register_static(&superh_cpu_type_info); } type_init(superh_cpu_register_types)