softmmu_header.h

   1 /*
   2  *  Software MMU support
   3  *
   4  * Generate inline load/store functions for one MMU mode and data
   5  * size.
   6  *
   7  * Generate a store function as well as signed and unsigned loads. For
   8  * 32 and 64 bit cases, also generate floating point functions with
   9  * the same size.
  10  *
  11  * Not used directly but included from softmmu_exec.h and exec-all.h.
  12  *
  13  *  Copyright (c) 2003 Fabrice Bellard
  14  *
  15  * This library is free software; you can redistribute it and/or
  16  * modify it under the terms of the GNU Lesser General Public
  17  * License as published by the Free Software Foundation; either
  18  * version 2 of the License, or (at your option) any later version.
  19  *
  20  * This library is distributed in the hope that it will be useful,
  21  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  22  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  23  * Lesser General Public License for more details.
  24  *
  25  * You should have received a copy of the GNU Lesser General Public
  26  * License along with this library; if not, see <http://www.gnu.org/licenses/>.
  27  */
  28 #if DATA_SIZE == 8
  29 #define SUFFIX q
  30 #define USUFFIX q
  31 #define DATA_TYPE uint64_t
  32 #elif DATA_SIZE == 4
  33 #define SUFFIX l
  34 #define USUFFIX l
  35 #define DATA_TYPE uint32_t
  36 #elif DATA_SIZE == 2
  37 #define SUFFIX w
  38 #define USUFFIX uw
  39 #define DATA_TYPE uint16_t
  40 #define DATA_STYPE int16_t
  41 #elif DATA_SIZE == 1
  42 #define SUFFIX b
  43 #define USUFFIX ub
  44 #define DATA_TYPE uint8_t
  45 #define DATA_STYPE int8_t
  46 #else
  47 #error unsupported data size
  48 #endif
  49
  50 #if ACCESS_TYPE < (NB_MMU_MODES)
  51
  52 #define CPU_MMU_INDEX ACCESS_TYPE
  53 #define MMUSUFFIX _mmu
  54
  55 #elif ACCESS_TYPE == (NB_MMU_MODES)
  56
  57 #define CPU_MMU_INDEX (cpu_mmu_index(env))
  58 #define MMUSUFFIX _mmu
  59
  60 #elif ACCESS_TYPE == (NB_MMU_MODES + 1)
  61
  62 #define CPU_MMU_INDEX (cpu_mmu_index(env))
  63 #define MMUSUFFIX _cmmu
  64
  65 #else
  66 #error invalid ACCESS_TYPE
  67 #endif
  68
  69 #if DATA_SIZE == 8
  70 #define RES_TYPE uint64_t
  71 #else
  72 #define RES_TYPE uint32_t
  73 #endif
  74
  75 #if ACCESS_TYPE == (NB_MMU_MODES + 1)
  76 #define ADDR_READ addr_code
  77 #else
  78 #define ADDR_READ addr_read
  79 #endif
  80
  81 #ifndef CONFIG_TCG_PASS_AREG0
  82 #define ENV_PARAM
  83 #define ENV_VAR
  84 #define CPU_PREFIX
  85 #define HELPER_PREFIX __
  86 #else
  87 #define ENV_PARAM CPUArchState *env,
  88 #define ENV_VAR env,
  89 #define CPU_PREFIX cpu_
  90 #define HELPER_PREFIX helper_
  91 #endif
  92
  93 /* generic load/store macros */
  94
  95 static inline RES_TYPE
  96 glue(glue(glue(CPU_PREFIX, ld), USUFFIX), MEMSUFFIX)(ENV_PARAM
  97                                                      target_ulong ptr)
  98 {
  99     int page_index;
 100     RES_TYPE res;
 101     target_ulong addr;
 102     unsigned long physaddr;
 103     int mmu_idx;
 104
 105     addr = ptr;
 106     page_index = (addr >> TARGET_PAGE_BITS) & (CPU_TLB_SIZE - 1);
 107     mmu_idx = CPU_MMU_INDEX;
 108     if (unlikely(env->tlb_table[mmu_idx][page_index].ADDR_READ !=
 109                  (addr & (TARGET_PAGE_MASK | (DATA_SIZE - 1))))) {
 110         res = glue(glue(glue(HELPER_PREFIX, ld), SUFFIX), MMUSUFFIX)(ENV_VAR
 111                                                                      addr,
 112                                                                      mmu_idx);
 113     } else {
 114         physaddr = addr + env->tlb_table[mmu_idx][page_index].addend;
 115         res = glue(glue(ld, USUFFIX), _raw)((uint8_t *)physaddr);
 116     }
 117     return res;
 118 }
 119
 120 #if DATA_SIZE <= 2
 121 static inline int
 122 glue(glue(glue(CPU_PREFIX, lds), SUFFIX), MEMSUFFIX)(ENV_PARAM
 123                                                      target_ulong ptr)
 124 {
 125     int res, page_index;
 126     target_ulong addr;
 127     unsigned long physaddr;
 128     int mmu_idx;
 129
 130     addr = ptr;
 131     page_index = (addr >> TARGET_PAGE_BITS) & (CPU_TLB_SIZE - 1);
 132     mmu_idx = CPU_MMU_INDEX;
 133     if (unlikely(env->tlb_table[mmu_idx][page_index].ADDR_READ !=
 134                  (addr & (TARGET_PAGE_MASK | (DATA_SIZE - 1))))) {
 135         res = (DATA_STYPE)glue(glue(glue(HELPER_PREFIX, ld), SUFFIX),
 136                                MMUSUFFIX)(ENV_VAR addr, mmu_idx);
 137     } else {
 138         physaddr = addr + env->tlb_table[mmu_idx][page_index].addend;
 139         res = glue(glue(lds, SUFFIX), _raw)((uint8_t *)physaddr);
 140     }
 141     return res;
 142 }
 143 #endif
 144
 145 #if ACCESS_TYPE != (NB_MMU_MODES + 1)
 146
 147 /* generic store macro */
 148
 149 static inline void
 150 glue(glue(glue(CPU_PREFIX, st), SUFFIX), MEMSUFFIX)(ENV_PARAM target_ulong ptr,
 151                                                     RES_TYPE v)
 152 {
 153     int page_index;
 154     target_ulong addr;
 155     unsigned long physaddr;
 156     int mmu_idx;
 157
 158     addr = ptr;
 159     page_index = (addr >> TARGET_PAGE_BITS) & (CPU_TLB_SIZE - 1);
 160     mmu_idx = CPU_MMU_INDEX;
 161     if (unlikely(env->tlb_table[mmu_idx][page_index].addr_write !=
 162                  (addr & (TARGET_PAGE_MASK | (DATA_SIZE - 1))))) {
 163         glue(glue(glue(HELPER_PREFIX, st), SUFFIX), MMUSUFFIX)(ENV_VAR addr, v,
 164                                                                mmu_idx);
 165     } else {
 166         physaddr = addr + env->tlb_table[mmu_idx][page_index].addend;
 167         glue(glue(st, SUFFIX), _raw)((uint8_t *)physaddr, v);
 168     }
 169 }
 170
 171 #endif /* ACCESS_TYPE != (NB_MMU_MODES + 1) */
 172
 173 #if ACCESS_TYPE != (NB_MMU_MODES + 1)
 174
 175 #if DATA_SIZE == 8
 176 static inline float64 glue(glue(CPU_PREFIX, ldfq), MEMSUFFIX)(ENV_PARAM
 177                                                               target_ulong ptr)
 178 {
 179     union {
 180         float64 d;
 181         uint64_t i;
 182     } u;
 183     u.i = glue(glue(CPU_PREFIX, ldq), MEMSUFFIX)(ENV_VAR ptr);
 184     return u.d;
 185 }
 186
 187 static inline void glue(glue(CPU_PREFIX, stfq), MEMSUFFIX)(ENV_PARAM
 188                                                            target_ulong ptr,
 189                                                            float64 v)
 190 {
 191     union {
 192         float64 d;
 193         uint64_t i;
 194     } u;
 195     u.d = v;
 196     glue(glue(CPU_PREFIX, stq), MEMSUFFIX)(ENV_VAR ptr, u.i);
 197 }
 198 #endif /* DATA_SIZE == 8 */
 199
 200 #if DATA_SIZE == 4
 201 static inline float32 glue(glue(CPU_PREFIX, ldfl), MEMSUFFIX)(ENV_PARAM
 202                                                               target_ulong ptr)
 203 {
 204     union {
 205         float32 f;
 206         uint32_t i;
 207     } u;
 208     u.i = glue(glue(CPU_PREFIX, ldl), MEMSUFFIX)(ENV_VAR ptr);
 209     return u.f;
 210 }
 211
 212 static inline void glue(glue(CPU_PREFIX, stfl), MEMSUFFIX)(ENV_PARAM
 213                                                            target_ulong ptr,
 214                                                            float32 v)
 215 {
 216     union {
 217         float32 f;
 218         uint32_t i;
 219     } u;
 220     u.f = v;
 221     glue(glue(CPU_PREFIX, stl), MEMSUFFIX)(ENV_VAR ptr, u.i);
 222 }
 223 #endif /* DATA_SIZE == 4 */
 224
 225 #endif /* ACCESS_TYPE != (NB_MMU_MODES + 1) */
 226
 227 #undef RES_TYPE
 228 #undef DATA_TYPE
 229 #undef DATA_STYPE
 230 #undef SUFFIX
 231 #undef USUFFIX
 232 #undef DATA_SIZE
 233 #undef CPU_MMU_INDEX
 234 #undef MMUSUFFIX
 235 #undef ADDR_READ
 236 #undef ENV_PARAM
 237 #undef ENV_VAR
 238 #undef CPU_PREFIX
 239 #undef HELPER_PREFIX