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     int mmu_idx;
 103
 104     addr = ptr;
 105     page_index = (addr >> TARGET_PAGE_BITS) & (CPU_TLB_SIZE - 1);
 106     mmu_idx = CPU_MMU_INDEX;
 107     if (unlikely(env->tlb_table[mmu_idx][page_index].ADDR_READ !=
 108                  (addr & (TARGET_PAGE_MASK | (DATA_SIZE - 1))))) {
 109         res = glue(glue(glue(HELPER_PREFIX, ld), SUFFIX), MMUSUFFIX)(ENV_VAR
 110                                                                      addr,
 111                                                                      mmu_idx);
 112     } else {
 113         uintptr_t hostaddr = addr + env->tlb_table[mmu_idx][page_index].addend;
 114         res = glue(glue(ld, USUFFIX), _raw)(hostaddr);
 115     }
 116     return res;
 117 }
 118
 119 #if DATA_SIZE <= 2
 120 static inline int
 121 glue(glue(glue(CPU_PREFIX, lds), SUFFIX), MEMSUFFIX)(ENV_PARAM
 122                                                      target_ulong ptr)
 123 {
 124     int res, page_index;
 125     target_ulong addr;
 126     int mmu_idx;
 127
 128     addr = ptr;
 129     page_index = (addr >> TARGET_PAGE_BITS) & (CPU_TLB_SIZE - 1);
 130     mmu_idx = CPU_MMU_INDEX;
 131     if (unlikely(env->tlb_table[mmu_idx][page_index].ADDR_READ !=
 132                  (addr & (TARGET_PAGE_MASK | (DATA_SIZE - 1))))) {
 133         res = (DATA_STYPE)glue(glue(glue(HELPER_PREFIX, ld), SUFFIX),
 134                                MMUSUFFIX)(ENV_VAR addr, mmu_idx);
 135     } else {
 136         uintptr_t hostaddr = addr + env->tlb_table[mmu_idx][page_index].addend;
 137         res = glue(glue(lds, SUFFIX), _raw)(hostaddr);
 138     }
 139     return res;
 140 }
 141 #endif
 142
 143 #if ACCESS_TYPE != (NB_MMU_MODES + 1)
 144
 145 /* generic store macro */
 146
 147 static inline void
 148 glue(glue(glue(CPU_PREFIX, st), SUFFIX), MEMSUFFIX)(ENV_PARAM target_ulong ptr,
 149                                                     RES_TYPE v)
 150 {
 151     int page_index;
 152     target_ulong addr;
 153     int mmu_idx;
 154
 155     addr = ptr;
 156     page_index = (addr >> TARGET_PAGE_BITS) & (CPU_TLB_SIZE - 1);
 157     mmu_idx = CPU_MMU_INDEX;
 158     if (unlikely(env->tlb_table[mmu_idx][page_index].addr_write !=
 159                  (addr & (TARGET_PAGE_MASK | (DATA_SIZE - 1))))) {
 160         glue(glue(glue(HELPER_PREFIX, st), SUFFIX), MMUSUFFIX)(ENV_VAR addr, v,
 161                                                                mmu_idx);
 162     } else {
 163         uintptr_t hostaddr = addr + env->tlb_table[mmu_idx][page_index].addend;
 164         glue(glue(st, SUFFIX), _raw)(hostaddr, v);
 165     }
 166 }
 167
 168 #endif /* ACCESS_TYPE != (NB_MMU_MODES + 1) */
 169
 170 #if ACCESS_TYPE != (NB_MMU_MODES + 1)
 171
 172 #if DATA_SIZE == 8
 173 static inline float64 glue(glue(CPU_PREFIX, ldfq), MEMSUFFIX)(ENV_PARAM
 174                                                               target_ulong ptr)
 175 {
 176     union {
 177         float64 d;
 178         uint64_t i;
 179     } u;
 180     u.i = glue(glue(CPU_PREFIX, ldq), MEMSUFFIX)(ENV_VAR ptr);
 181     return u.d;
 182 }
 183
 184 static inline void glue(glue(CPU_PREFIX, stfq), MEMSUFFIX)(ENV_PARAM
 185                                                            target_ulong ptr,
 186                                                            float64 v)
 187 {
 188     union {
 189         float64 d;
 190         uint64_t i;
 191     } u;
 192     u.d = v;
 193     glue(glue(CPU_PREFIX, stq), MEMSUFFIX)(ENV_VAR ptr, u.i);
 194 }
 195 #endif /* DATA_SIZE == 8 */
 196
 197 #if DATA_SIZE == 4
 198 static inline float32 glue(glue(CPU_PREFIX, ldfl), MEMSUFFIX)(ENV_PARAM
 199                                                               target_ulong ptr)
 200 {
 201     union {
 202         float32 f;
 203         uint32_t i;
 204     } u;
 205     u.i = glue(glue(CPU_PREFIX, ldl), MEMSUFFIX)(ENV_VAR ptr);
 206     return u.f;
 207 }
 208
 209 static inline void glue(glue(CPU_PREFIX, stfl), MEMSUFFIX)(ENV_PARAM
 210                                                            target_ulong ptr,
 211                                                            float32 v)
 212 {
 213     union {
 214         float32 f;
 215         uint32_t i;
 216     } u;
 217     u.f = v;
 218     glue(glue(CPU_PREFIX, stl), MEMSUFFIX)(ENV_VAR ptr, u.i);
 219 }
 220 #endif /* DATA_SIZE == 4 */
 221
 222 #endif /* ACCESS_TYPE != (NB_MMU_MODES + 1) */
 223
 224 #undef RES_TYPE
 225 #undef DATA_TYPE
 226 #undef DATA_STYPE
 227 #undef SUFFIX
 228 #undef USUFFIX
 229 #undef DATA_SIZE
 230 #undef CPU_MMU_INDEX
 231 #undef MMUSUFFIX
 232 #undef ADDR_READ
 233 #undef ENV_PARAM
 234 #undef ENV_VAR
 235 #undef CPU_PREFIX
 236 #undef HELPER_PREFIX