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 #include "qemu/qemu-print.h"
  27
  28 target_ureg cpu_hppa_get_psw(CPUHPPAState *env)
  29 {
  30     target_ureg psw;
  31
  32     /* Fold carry bits down to 8 consecutive bits.  */
  33     /* ??? Needs tweaking for hppa64.  */
  34     /* .......b...c...d...e...f...g...h */
  35     psw = (env->psw_cb >> 4) & 0x01111111;
  36     /* .......b..bc..cd..de..ef..fg..gh */
  37     psw |= psw >> 3;
  38     /* .............bcd............efgh */
  39     psw |= (psw >> 6) & 0x000f000f;
  40     /* .........................bcdefgh */
  41     psw |= (psw >> 12) & 0xf;
  42     psw |= env->psw_cb_msb << 7;
  43     psw = (psw & 0xff) << 8;
  44
  45     psw |= env->psw_n * PSW_N;
  46     psw |= (env->psw_v < 0) * PSW_V;
  47     psw |= env->psw;
  48
  49     return psw;
  50 }
  51
  52 void cpu_hppa_put_psw(CPUHPPAState *env, target_ureg psw)
  53 {
  54     target_ureg old_psw = env->psw;
  55     target_ureg cb = 0;
  56
  57     env->psw = psw & ~(PSW_N | PSW_V | PSW_CB);
  58     env->psw_n = (psw / PSW_N) & 1;
  59     env->psw_v = -((psw / PSW_V) & 1);
  60     env->psw_cb_msb = (psw >> 15) & 1;
  61
  62     cb |= ((psw >> 14) & 1) << 28;
  63     cb |= ((psw >> 13) & 1) << 24;
  64     cb |= ((psw >> 12) & 1) << 20;
  65     cb |= ((psw >> 11) & 1) << 16;
  66     cb |= ((psw >> 10) & 1) << 12;
  67     cb |= ((psw >>  9) & 1) <<  8;
  68     cb |= ((psw >>  8) & 1) <<  4;
  69     env->psw_cb = cb;
  70
  71     /* If PSW_P changes, it affects how we translate addresses.  */
  72     if ((psw ^ old_psw) & PSW_P) {
  73 #ifndef CONFIG_USER_ONLY
  74         tlb_flush_by_mmuidx(env_cpu(env), 0xf);
  75 #endif
  76     }
  77 }
  78
  79 void hppa_cpu_dump_state(CPUState *cs, FILE *f, int flags)
  80 {
  81     HPPACPU *cpu = HPPA_CPU(cs);
  82     CPUHPPAState *env = &cpu->env;
  83     target_ureg psw = cpu_hppa_get_psw(env);
  84     target_ureg psw_cb;
  85     char psw_c[20];
  86     int i;
  87
  88     qemu_fprintf(f, "IA_F " TARGET_FMT_lx " IA_B " TARGET_FMT_lx "\n",
  89                  hppa_form_gva_psw(psw, env->iasq_f, env->iaoq_f),
  90                  hppa_form_gva_psw(psw, env->iasq_b, env->iaoq_b));
  91
  92     psw_c[0]  = (psw & PSW_W ? 'W' : '-');
  93     psw_c[1]  = (psw & PSW_E ? 'E' : '-');
  94     psw_c[2]  = (psw & PSW_S ? 'S' : '-');
  95     psw_c[3]  = (psw & PSW_T ? 'T' : '-');
  96     psw_c[4]  = (psw & PSW_H ? 'H' : '-');
  97     psw_c[5]  = (psw & PSW_L ? 'L' : '-');
  98     psw_c[6]  = (psw & PSW_N ? 'N' : '-');
  99     psw_c[7]  = (psw & PSW_X ? 'X' : '-');
 100     psw_c[8]  = (psw & PSW_B ? 'B' : '-');
 101     psw_c[9]  = (psw & PSW_C ? 'C' : '-');
 102     psw_c[10] = (psw & PSW_V ? 'V' : '-');
 103     psw_c[11] = (psw & PSW_M ? 'M' : '-');
 104     psw_c[12] = (psw & PSW_F ? 'F' : '-');
 105     psw_c[13] = (psw & PSW_R ? 'R' : '-');
 106     psw_c[14] = (psw & PSW_Q ? 'Q' : '-');
 107     psw_c[15] = (psw & PSW_P ? 'P' : '-');
 108     psw_c[16] = (psw & PSW_D ? 'D' : '-');
 109     psw_c[17] = (psw & PSW_I ? 'I' : '-');
 110     psw_c[18] = '\0';
 111     psw_cb = ((env->psw_cb >> 4) & 0x01111111) | (env->psw_cb_msb << 28);
 112
 113     qemu_fprintf(f, "PSW  " TREG_FMT_lx " CB   " TREG_FMT_lx " %s\n",
 114                  psw, psw_cb, psw_c);
 115
 116     for (i = 0; i < 32; i++) {
 117         qemu_fprintf(f, "GR%02d " TREG_FMT_lx "%c", i, env->gr[i],
 118                      (i & 3) == 3 ? '\n' : ' ');
 119     }
 120 #ifndef CONFIG_USER_ONLY
 121     for (i = 0; i < 8; i++) {
 122         qemu_fprintf(f, "SR%02d %08x%c", i, (uint32_t)(env->sr[i] >> 32),
 123                      (i & 3) == 3 ? '\n' : ' ');
 124     }
 125 #endif
 126      qemu_fprintf(f, "\n");
 127
 128     /* ??? FR */
 129 }