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Annotation of qemu/target-sh4/cpu.c, revision 1.1.1.1

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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