target/hppa/helper.c

   1 /*
   2  *  HPPA emulation cpu helpers for qemu.
   3  *
   4  * Copyright (c) 2016 Richard Henderson <rth@twiddle.net>
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, see <http://www.gnu.org/licenses/>.
  18  */
  19
  20 #include "qemu/osdep.h"
  21
  22 #include "cpu.h"
  23 #include "fpu/softfloat.h"
  24 #include "exec/exec-all.h"
  25 #include "exec/helper-proto.h"
  26
  27 target_ureg cpu_hppa_get_psw(CPUHPPAState *env)
  28 {
  29     target_ureg psw;
  30
  31     /* Fold carry bits down to 8 consecutive bits.  */
  32     /* ??? Needs tweaking for hppa64.  */
  33     /* .......b...c...d...e...f...g...h */
  34     psw = (env->psw_cb >> 4) & 0x01111111;
  35     /* .......b..bc..cd..de..ef..fg..gh */
  36     psw |= psw >> 3;
  37     /* .............bcd............efgh */
  38     psw |= (psw >> 6) & 0x000f000f;
  39     /* .........................bcdefgh */
  40     psw |= (psw >> 12) & 0xf;
  41     psw |= env->psw_cb_msb << 7;
  42     psw = (psw & 0xff) << 8;
  43
  44     psw |= env->psw_n * PSW_N;
  45     psw |= (env->psw_v < 0) * PSW_V;
  46     psw |= env->psw;
  47
  48     return psw;
  49 }
  50
  51 void cpu_hppa_put_psw(CPUHPPAState *env, target_ureg psw)
  52 {
  53     target_ureg old_psw = env->psw;
  54     target_ureg cb = 0;
  55
  56     env->psw = psw & ~(PSW_N | PSW_V | PSW_CB);
  57     env->psw_n = (psw / PSW_N) & 1;
  58     env->psw_v = -((psw / PSW_V) & 1);
  59     env->psw_cb_msb = (psw >> 15) & 1;
  60
  61     cb |= ((psw >> 14) & 1) << 28;
  62     cb |= ((psw >> 13) & 1) << 24;
  63     cb |= ((psw >> 12) & 1) << 20;
  64     cb |= ((psw >> 11) & 1) << 16;
  65     cb |= ((psw >> 10) & 1) << 12;
  66     cb |= ((psw >>  9) & 1) <<  8;
  67     cb |= ((psw >>  8) & 1) <<  4;
  68     env->psw_cb = cb;
  69
  70     /* If PSW_P changes, it affects how we translate addresses.  */
  71     if ((psw ^ old_psw) & PSW_P) {
  72 #ifndef CONFIG_USER_ONLY
  73         CPUState *src = CPU(hppa_env_get_cpu(env));
  74         tlb_flush_by_mmuidx(src, 0xf);
  75 #endif
  76     }
  77 }
  78
  79 void hppa_cpu_dump_state(CPUState *cs, FILE *f,
  80                          fprintf_function cpu_fprintf, int flags)
  81 {
  82     HPPACPU *cpu = HPPA_CPU(cs);
  83     CPUHPPAState *env = &cpu->env;
  84     target_ureg psw = cpu_hppa_get_psw(env);
  85     target_ureg psw_cb;
  86     char psw_c[20];
  87     int i;
  88
  89     cpu_fprintf(f, "IA_F " TARGET_FMT_lx " IA_B " TARGET_FMT_lx "\n",
  90                 hppa_form_gva_psw(psw, env->iasq_f, env->iaoq_f),
  91                 hppa_form_gva_psw(psw, env->iasq_b, env->iaoq_b));
  92
  93     psw_c[0]  = (psw & PSW_W ? 'W' : '-');
  94     psw_c[1]  = (psw & PSW_E ? 'E' : '-');
  95     psw_c[2]  = (psw & PSW_S ? 'S' : '-');
  96     psw_c[3]  = (psw & PSW_T ? 'T' : '-');
  97     psw_c[4]  = (psw & PSW_H ? 'H' : '-');
  98     psw_c[5]  = (psw & PSW_L ? 'L' : '-');
  99     psw_c[6]  = (psw & PSW_N ? 'N' : '-');
 100     psw_c[7]  = (psw & PSW_X ? 'X' : '-');
 101     psw_c[8]  = (psw & PSW_B ? 'B' : '-');
 102     psw_c[9]  = (psw & PSW_C ? 'C' : '-');
 103     psw_c[10] = (psw & PSW_V ? 'V' : '-');
 104     psw_c[11] = (psw & PSW_M ? 'M' : '-');
 105     psw_c[12] = (psw & PSW_F ? 'F' : '-');
 106     psw_c[13] = (psw & PSW_R ? 'R' : '-');
 107     psw_c[14] = (psw & PSW_Q ? 'Q' : '-');
 108     psw_c[15] = (psw & PSW_P ? 'P' : '-');
 109     psw_c[16] = (psw & PSW_D ? 'D' : '-');
 110     psw_c[17] = (psw & PSW_I ? 'I' : '-');
 111     psw_c[18] = '\0';
 112     psw_cb = ((env->psw_cb >> 4) & 0x01111111) | (env->psw_cb_msb << 28);
 113
 114     cpu_fprintf(f, "PSW  " TREG_FMT_lx " CB   " TREG_FMT_lx " %s\n",
 115                 psw, psw_cb, psw_c);
 116
 117     for (i = 0; i < 32; i++) {
 118         cpu_fprintf(f, "GR%02d " TREG_FMT_lx "%c", i, env->gr[i],
 119                     (i & 3) == 3 ? '\n' : ' ');
 120     }
 121 #ifndef CONFIG_USER_ONLY
 122     for (i = 0; i < 8; i++) {
 123         cpu_fprintf(f, "SR%02d %08x%c", i, (uint32_t)(env->sr[i] >> 32),
 124                     (i & 3) == 3 ? '\n' : ' ');
 125     }
 126 #endif
 127      cpu_fprintf(f, "\n");
 128
 129     /* ??? FR */
 130 }