LXR qemu/target-ppc/timebase

   1/*
   2 *  PowerPC emulation helpers for QEMU.
   3 *
   4 *  Copyright (c) 2003-2007 Jocelyn Mayer
   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#include "qemu/osdep.h"
  20#include "cpu.h"
  21#include "exec/helper-proto.h"
  22
  23/*****************************************************************************/
  24/* SPR accesses */
  25
  26target_ulong helper_load_tbl(CPUPPCState *env)
  27{
  28    return (target_ulong)cpu_ppc_load_tbl(env);
  29}
  30
  31target_ulong helper_load_tbu(CPUPPCState *env)
  32{
  33    return cpu_ppc_load_tbu(env);
  34}
  35
  36target_ulong helper_load_atbl(CPUPPCState *env)
  37{
  38    return (target_ulong)cpu_ppc_load_atbl(env);
  39}
  40
  41target_ulong helper_load_atbu(CPUPPCState *env)
  42{
  43    return cpu_ppc_load_atbu(env);
  44}
  45
  46#if defined(TARGET_PPC64) && !defined(CONFIG_USER_ONLY)
  47target_ulong helper_load_purr(CPUPPCState *env)
  48{
  49    return (target_ulong)cpu_ppc_load_purr(env);
  50}
  51#endif
  52
  53target_ulong helper_load_601_rtcl(CPUPPCState *env)
  54{
  55    return cpu_ppc601_load_rtcl(env);
  56}
  57
  58target_ulong helper_load_601_rtcu(CPUPPCState *env)
  59{
  60    return cpu_ppc601_load_rtcu(env);
  61}
  62
  63#if !defined(CONFIG_USER_ONLY)
  64void helper_store_tbl(CPUPPCState *env, target_ulong val)
  65{
  66    cpu_ppc_store_tbl(env, val);
  67}
  68
  69void helper_store_tbu(CPUPPCState *env, target_ulong val)
  70{
  71    cpu_ppc_store_tbu(env, val);
  72}
  73
  74void helper_store_atbl(CPUPPCState *env, target_ulong val)
  75{
  76    cpu_ppc_store_atbl(env, val);
  77}
  78
  79void helper_store_atbu(CPUPPCState *env, target_ulong val)
  80{
  81    cpu_ppc_store_atbu(env, val);
  82}
  83
  84void helper_store_601_rtcl(CPUPPCState *env, target_ulong val)
  85{
  86    cpu_ppc601_store_rtcl(env, val);
  87}
  88
  89void helper_store_601_rtcu(CPUPPCState *env, target_ulong val)
  90{
  91    cpu_ppc601_store_rtcu(env, val);
  92}
  93
  94target_ulong helper_load_decr(CPUPPCState *env)
  95{
  96    return cpu_ppc_load_decr(env);
  97}
  98
  99void helper_store_decr(CPUPPCState *env, target_ulong val)
 100{
 101    cpu_ppc_store_decr(env, val);
 102}
 103
 104target_ulong helper_load_40x_pit(CPUPPCState *env)
 105{
 106    return load_40x_pit(env);
 107}
 108
 109void helper_store_40x_pit(CPUPPCState *env, target_ulong val)
 110{
 111    store_40x_pit(env, val);
 112}
 113
 114void helper_store_booke_tcr(CPUPPCState *env, target_ulong val)
 115{
 116    store_booke_tcr(env, val);
 117}
 118
 119void helper_store_booke_tsr(CPUPPCState *env, target_ulong val)
 120{
 121    store_booke_tsr(env, val);
 122}
 123#endif
 124
 125/*****************************************************************************/
 126/* Embedded PowerPC specific helpers */
 127
 128/* XXX: to be improved to check access rights when in user-mode */
 129target_ulong helper_load_dcr(CPUPPCState *env, target_ulong dcrn)
 130{
 131    uint32_t val = 0;
 132
 133    if (unlikely(env->dcr_env == NULL)) {
 134        qemu_log_mask(LOG_GUEST_ERROR, "No DCR environment\n");
 135        helper_raise_exception_err(env, POWERPC_EXCP_PROGRAM,
 136                                   POWERPC_EXCP_INVAL |
 137                                   POWERPC_EXCP_INVAL_INVAL);
 138    } else if (unlikely(ppc_dcr_read(env->dcr_env,
 139                                     (uint32_t)dcrn, &val) != 0)) {
 140        qemu_log_mask(LOG_GUEST_ERROR, "DCR read error %d %03x\n",
 141                      (uint32_t)dcrn, (uint32_t)dcrn);
 142        helper_raise_exception_err(env, POWERPC_EXCP_PROGRAM,
 143                                   POWERPC_EXCP_INVAL | POWERPC_EXCP_PRIV_REG);
 144    }
 145    return val;
 146}
 147
 148void helper_store_dcr(CPUPPCState *env, target_ulong dcrn, target_ulong val)
 149{
 150    if (unlikely(env->dcr_env == NULL)) {
 151        qemu_log_mask(LOG_GUEST_ERROR, "No DCR environment\n");
 152        helper_raise_exception_err(env, POWERPC_EXCP_PROGRAM,
 153                                   POWERPC_EXCP_INVAL |
 154                                   POWERPC_EXCP_INVAL_INVAL);
 155    } else if (unlikely(ppc_dcr_write(env->dcr_env, (uint32_t)dcrn,
 156                                      (uint32_t)val) != 0)) {
 157        qemu_log_mask(LOG_GUEST_ERROR, "DCR write error %d %03x\n",
 158                      (uint32_t)dcrn, (uint32_t)dcrn);
 159        helper_raise_exception_err(env, POWERPC_EXCP_PROGRAM,
 160                                   POWERPC_EXCP_INVAL | POWERPC_EXCP_PRIV_REG);
 161    }
 162}
 163