target-tricore/helper.c

   1 /*
   2  *  Copyright (c) 2012-2014 Bastian Koppelmann C-Lab/University Paderborn
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Lesser General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Lesser General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Lesser General Public
  15  * License along with this library; if not, see <http://www.gnu.org/licenses/>.
  16  */
  17
  18 #include <stdarg.h>
  19 #include <stdlib.h>
  20 #include <stdio.h>
  21 #include <string.h>
  22 #include <inttypes.h>
  23 #include <signal.h>
  24
  25 #include "cpu.h"
  26
  27 int cpu_tricore_handle_mmu_fault(CPUState *cs, target_ulong address,
  28                                  int rw, int mmu_idx)
  29 {
  30     return 0;
  31 }
  32
  33 void tricore_cpu_do_interrupt(CPUState *cs)
  34 {
  35 }
  36
  37 TriCoreCPU *cpu_tricore_init(const char *cpu_model)
  38 {
  39     return TRICORE_CPU(cpu_generic_init(TYPE_TRICORE_CPU, cpu_model));
  40 }
  41
  42 static void tricore_cpu_list_entry(gpointer data, gpointer user_data)
  43 {
  44     ObjectClass *oc = data;
  45     CPUListState *s = user_data;
  46     const char *typename;
  47     char *name;
  48
  49     typename = object_class_get_name(oc);
  50     name = g_strndup(typename, strlen(typename) - strlen("-" TYPE_TRICORE_CPU));
  51     (*s->cpu_fprintf)(s->file, "  %s\n",
  52                       name);
  53     g_free(name);
  54 }
  55
  56 void tricore_cpu_list(FILE *f, fprintf_function cpu_fprintf)
  57 {
  58     CPUListState s = {
  59         .file = f,
  60         .cpu_fprintf = cpu_fprintf,
  61     };
  62     GSList *list;
  63
  64     list = object_class_get_list(TYPE_TRICORE_CPU, false);
  65     (*cpu_fprintf)(f, "Available CPUs:\n");
  66     g_slist_foreach(list, tricore_cpu_list_entry, &s);
  67     g_slist_free(list);
  68 }
  69
  70 uint32_t psw_read(CPUTriCoreState *env)
  71 {
  72     /* clear all USB bits */
  73     env->PSW &= 0xffffff;
  74     /* now set them from the cache */
  75     env->PSW |= ((env->PSW_USB_C != 0) << 31);
  76     env->PSW |= ((env->PSW_USB_V   & (1 << 31))  >> 1);
  77     env->PSW |= ((env->PSW_USB_SV  & (1 << 31))  >> 2);
  78     env->PSW |= ((env->PSW_USB_AV  & (1 << 31))  >> 3);
  79     env->PSW |= ((env->PSW_USB_SAV & (1 << 31))  >> 4);
  80
  81     return env->PSW;
  82 }
  83
  84 void psw_write(CPUTriCoreState *env, uint32_t val)
  85 {
  86     env->PSW_USB_C = (val & MASK_USB_C);
  87     env->PSW_USB_V = (val & MASK_USB_V << 1);
  88     env->PSW_USB_SV = (val & MASK_USB_SV << 2);
  89     env->PSW_USB_AV = ((val & MASK_USB_AV) << 3);
  90     env->PSW_USB_SAV = ((val & MASK_USB_SAV) << 4);
  91     env->PSW = val;
  92 }