softmmu_header.h

   1 /*
   2  *  Software MMU support
   3  *
   4  *  Copyright (c) 2003 Fabrice Bellard
   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 #if DATA_SIZE == 8
  20 #define SUFFIX q
  21 #define USUFFIX q
  22 #define DATA_TYPE uint64_t
  23 #elif DATA_SIZE == 4
  24 #define SUFFIX l
  25 #define USUFFIX l
  26 #define DATA_TYPE uint32_t
  27 #elif DATA_SIZE == 2
  28 #define SUFFIX w
  29 #define USUFFIX uw
  30 #define DATA_TYPE uint16_t
  31 #define DATA_STYPE int16_t
  32 #elif DATA_SIZE == 1
  33 #define SUFFIX b
  34 #define USUFFIX ub
  35 #define DATA_TYPE uint8_t
  36 #define DATA_STYPE int8_t
  37 #else
  38 #error unsupported data size
  39 #endif
  40
  41 #if ACCESS_TYPE < (NB_MMU_MODES)
  42
  43 #define CPU_MMU_INDEX ACCESS_TYPE
  44 #define MMUSUFFIX _mmu
  45
  46 #elif ACCESS_TYPE == (NB_MMU_MODES)
  47
  48 #define CPU_MMU_INDEX (cpu_mmu_index(env))
  49 #define MMUSUFFIX _mmu
  50
  51 #elif ACCESS_TYPE == (NB_MMU_MODES + 1)
  52
  53 #define CPU_MMU_INDEX (cpu_mmu_index(env))
  54 #define MMUSUFFIX _cmmu
  55
  56 #else
  57 #error invalid ACCESS_TYPE
  58 #endif
  59
  60 #if DATA_SIZE == 8
  61 #define RES_TYPE uint64_t
  62 #else
  63 #define RES_TYPE uint32_t
  64 #endif
  65
  66 #if ACCESS_TYPE == (NB_MMU_MODES + 1)
  67 #define ADDR_READ addr_code
  68 #else
  69 #define ADDR_READ addr_read
  70 #endif
  71
  72 /* generic load/store macros */
  73
  74 static inline RES_TYPE glue(glue(ld, USUFFIX), MEMSUFFIX)(target_ulong ptr)
  75 {
  76     int page_index;
  77     RES_TYPE res;
  78     target_ulong addr;
  79     unsigned long physaddr;
  80     int mmu_idx;
  81
  82     addr = ptr;
  83     page_index = (addr >> TARGET_PAGE_BITS) & (CPU_TLB_SIZE - 1);
  84     mmu_idx = CPU_MMU_INDEX;
  85     if (unlikely(env->tlb_table[mmu_idx][page_index].ADDR_READ !=
  86                  (addr & (TARGET_PAGE_MASK | (DATA_SIZE - 1))))) {
  87         res = glue(glue(__ld, SUFFIX), MMUSUFFIX)(addr, mmu_idx);
  88     } else {
  89         physaddr = addr + env->tlb_table[mmu_idx][page_index].addend;
  90         res = glue(glue(ld, USUFFIX), _raw)((uint8_t *)physaddr);
  91     }
  92     return res;
  93 }
  94
  95 #if DATA_SIZE <= 2
  96 static inline int glue(glue(lds, SUFFIX), MEMSUFFIX)(target_ulong ptr)
  97 {
  98     int res, page_index;
  99     target_ulong addr;
 100     unsigned long physaddr;
 101     int mmu_idx;
 102
 103     addr = ptr;
 104     page_index = (addr >> TARGET_PAGE_BITS) & (CPU_TLB_SIZE - 1);
 105     mmu_idx = CPU_MMU_INDEX;
 106     if (unlikely(env->tlb_table[mmu_idx][page_index].ADDR_READ !=
 107                  (addr & (TARGET_PAGE_MASK | (DATA_SIZE - 1))))) {
 108         res = (DATA_STYPE)glue(glue(__ld, SUFFIX), MMUSUFFIX)(addr, mmu_idx);
 109     } else {
 110         physaddr = addr + env->tlb_table[mmu_idx][page_index].addend;
 111         res = glue(glue(lds, SUFFIX), _raw)((uint8_t *)physaddr);
 112     }
 113     return res;
 114 }
 115 #endif
 116
 117 #if ACCESS_TYPE != (NB_MMU_MODES + 1)
 118
 119 /* generic store macro */
 120
 121 static inline void glue(glue(st, SUFFIX), MEMSUFFIX)(target_ulong ptr, RES_TYPE v)
 122 {
 123     int page_index;
 124     target_ulong addr;
 125     unsigned long physaddr;
 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_write !=
 132                  (addr & (TARGET_PAGE_MASK | (DATA_SIZE - 1))))) {
 133         glue(glue(__st, SUFFIX), MMUSUFFIX)(addr, v, mmu_idx);
 134     } else {
 135         physaddr = addr + env->tlb_table[mmu_idx][page_index].addend;
 136         glue(glue(st, SUFFIX), _raw)((uint8_t *)physaddr, v);
 137     }
 138 }
 139
 140 #endif /* ACCESS_TYPE != (NB_MMU_MODES + 1) */
 141
 142 #if ACCESS_TYPE != (NB_MMU_MODES + 1)
 143
 144 #if DATA_SIZE == 8
 145 static inline float64 glue(ldfq, MEMSUFFIX)(target_ulong ptr)
 146 {
 147     union {
 148         float64 d;
 149         uint64_t i;
 150     } u;
 151     u.i = glue(ldq, MEMSUFFIX)(ptr);
 152     return u.d;
 153 }
 154
 155 static inline void glue(stfq, MEMSUFFIX)(target_ulong ptr, float64 v)
 156 {
 157     union {
 158         float64 d;
 159         uint64_t i;
 160     } u;
 161     u.d = v;
 162     glue(stq, MEMSUFFIX)(ptr, u.i);
 163 }
 164 #endif /* DATA_SIZE == 8 */
 165
 166 #if DATA_SIZE == 4
 167 static inline float32 glue(ldfl, MEMSUFFIX)(target_ulong ptr)
 168 {
 169     union {
 170         float32 f;
 171         uint32_t i;
 172     } u;
 173     u.i = glue(ldl, MEMSUFFIX)(ptr);
 174     return u.f;
 175 }
 176
 177 static inline void glue(stfl, MEMSUFFIX)(target_ulong ptr, float32 v)
 178 {
 179     union {
 180         float32 f;
 181         uint32_t i;
 182     } u;
 183     u.f = v;
 184     glue(stl, MEMSUFFIX)(ptr, u.i);
 185 }
 186 #endif /* DATA_SIZE == 4 */
 187
 188 #endif /* ACCESS_TYPE != (NB_MMU_MODES + 1) */
 189
 190 #undef RES_TYPE
 191 #undef DATA_TYPE
 192 #undef DATA_STYPE
 193 #undef SUFFIX
 194 #undef USUFFIX
 195 #undef DATA_SIZE
 196 #undef CPU_MMU_INDEX
 197 #undef MMUSUFFIX
 198 #undef ADDR_READ