LXR qemu/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 2.1 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
  28target_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
  52void 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
  79void 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}
 130