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Annotation of qemu/target-sh4/cpu.c, revision 1.1

1.1     ! root        1: /*
        !             2:  * QEMU SuperH CPU
        !             3:  *
        !             4:  * Copyright (c) 2005 Samuel Tardieu
        !             5:  * Copyright (c) 2012 SUSE LINUX Products GmbH
        !             6:  *
        !             7:  * This library is free software; you can redistribute it and/or
        !             8:  * modify it under the terms of the GNU Lesser General Public
        !             9:  * License as published by the Free Software Foundation; either
        !            10:  * version 2.1 of the License, or (at your option) any later version.
        !            11:  *
        !            12:  * This library is distributed in the hope that it will be useful,
        !            13:  * but WITHOUT ANY WARRANTY; without even the implied warranty of
        !            14:  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
        !            15:  * Lesser General Public License for more details.
        !            16:  *
        !            17:  * You should have received a copy of the GNU Lesser General Public
        !            18:  * License along with this library; if not, see
        !            19:  * <http://www.gnu.org/licenses/lgpl-2.1.html>
        !            20:  */
        !            21: 
        !            22: #include "cpu.h"
        !            23: #include "qemu-common.h"
        !            24: 
        !            25: 
        !            26: /* CPUClass::reset() */
        !            27: static void superh_cpu_reset(CPUState *s)
        !            28: {
        !            29:     SuperHCPU *cpu = SUPERH_CPU(s);
        !            30:     SuperHCPUClass *scc = SUPERH_CPU_GET_CLASS(cpu);
        !            31:     CPUSH4State *env = &cpu->env;
        !            32: 
        !            33:     if (qemu_loglevel_mask(CPU_LOG_RESET)) {
        !            34:         qemu_log("CPU Reset (CPU %d)\n", env->cpu_index);
        !            35:         log_cpu_state(env, 0);
        !            36:     }
        !            37: 
        !            38:     scc->parent_reset(s);
        !            39: 
        !            40:     memset(env, 0, offsetof(CPUSH4State, breakpoints));
        !            41:     tlb_flush(env, 1);
        !            42: 
        !            43:     env->pc = 0xA0000000;
        !            44: #if defined(CONFIG_USER_ONLY)
        !            45:     env->fpscr = FPSCR_PR; /* value for userspace according to the kernel */
        !            46:     set_float_rounding_mode(float_round_nearest_even, &env->fp_status); /* ?! */
        !            47: #else
        !            48:     env->sr = SR_MD | SR_RB | SR_BL | SR_I3 | SR_I2 | SR_I1 | SR_I0;
        !            49:     env->fpscr = FPSCR_DN | FPSCR_RM_ZERO; /* CPU reset value according to SH4 manual */
        !            50:     set_float_rounding_mode(float_round_to_zero, &env->fp_status);
        !            51:     set_flush_to_zero(1, &env->fp_status);
        !            52: #endif
        !            53:     set_default_nan_mode(1, &env->fp_status);
        !            54: }
        !            55: 
        !            56: static void superh_cpu_initfn(Object *obj)
        !            57: {
        !            58:     SuperHCPU *cpu = SUPERH_CPU(obj);
        !            59:     CPUSH4State *env = &cpu->env;
        !            60: 
        !            61:     cpu_exec_init(env);
        !            62: 
        !            63:     env->movcal_backup_tail = &(env->movcal_backup);
        !            64: }
        !            65: 
        !            66: static void superh_cpu_class_init(ObjectClass *oc, void *data)
        !            67: {
        !            68:     CPUClass *cc = CPU_CLASS(oc);
        !            69:     SuperHCPUClass *scc = SUPERH_CPU_CLASS(oc);
        !            70: 
        !            71:     scc->parent_reset = cc->reset;
        !            72:     cc->reset = superh_cpu_reset;
        !            73: }
        !            74: 
        !            75: static const TypeInfo superh_cpu_type_info = {
        !            76:     .name = TYPE_SUPERH_CPU,
        !            77:     .parent = TYPE_CPU,
        !            78:     .instance_size = sizeof(SuperHCPU),
        !            79:     .instance_init = superh_cpu_initfn,
        !            80:     .abstract = false,
        !            81:     .class_size = sizeof(SuperHCPUClass),
        !            82:     .class_init = superh_cpu_class_init,
        !            83: };
        !            84: 
        !            85: static void superh_cpu_register_types(void)
        !            86: {
        !            87:     type_register_static(&superh_cpu_type_info);
        !            88: }
        !            89: 
        !            90: type_init(superh_cpu_register_types)

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