src/recompiler/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
  20 /*
  21  * Oracle LGPL Disclaimer: For the avoidance of doubt, except that if any license choice
  22  * other than GPL or LGPL is available it will apply instead, Oracle elects to use only
  23  * the Lesser General Public License version 2.1 (LGPLv2) at this time for any software where
  24  * a choice of LGPL license versions is made available with the language indicating
  25  * that LGPLv2 or any later version may be used, or where a choice of which version
  26  * of the LGPL is applied is otherwise unspecified.
  27  */
  28
  29 #if DATA_SIZE == 8
  30 #define SUFFIX q
  31 #define USUFFIX q
  32 #define DATA_TYPE uint64_t
  33 #elif DATA_SIZE == 4
  34 #define SUFFIX l
  35 #define USUFFIX l
  36 #define DATA_TYPE uint32_t
  37 #elif DATA_SIZE == 2
  38 #define SUFFIX w
  39 #define USUFFIX uw
  40 #define DATA_TYPE uint16_t
  41 #define DATA_STYPE int16_t
  42 #elif DATA_SIZE == 1
  43 #define SUFFIX b
  44 #define USUFFIX ub
  45 #define DATA_TYPE uint8_t
  46 #define DATA_STYPE int8_t
  47 #else
  48 #error unsupported data size
  49 #endif
  50
  51 #if ACCESS_TYPE < (NB_MMU_MODES)
  52
  53 #define CPU_MMU_INDEX ACCESS_TYPE
  54 #define MMUSUFFIX _mmu
  55
  56 #elif ACCESS_TYPE == (NB_MMU_MODES)
  57
  58 #define CPU_MMU_INDEX (cpu_mmu_index(env))
  59 #define MMUSUFFIX _mmu
  60
  61 #elif ACCESS_TYPE == (NB_MMU_MODES + 1)
  62
  63 #define CPU_MMU_INDEX (cpu_mmu_index(env))
  64 #define MMUSUFFIX _cmmu
  65
  66 #else
  67 #error invalid ACCESS_TYPE
  68 #endif
  69
  70 #if DATA_SIZE == 8
  71 #define RES_TYPE uint64_t
  72 #else
  73 #define RES_TYPE uint32_t
  74 #endif
  75
  76 #if ACCESS_TYPE == (NB_MMU_MODES + 1)
  77 #define ADDR_READ addr_code
  78 #else
  79 #define ADDR_READ addr_read
  80 #endif
  81
  82 /* generic load/store macros */
  83
  84 static inline RES_TYPE glue(glue(ld, USUFFIX), MEMSUFFIX)(target_ulong ptr)
  85 {
  86     int page_index;
  87     RES_TYPE res;
  88     target_ulong addr;
  89     uintptr_t physaddr;
  90     int mmu_idx;
  91
  92     addr = ptr;
  93     page_index = (addr >> TARGET_PAGE_BITS) & (CPU_TLB_SIZE - 1);
  94     mmu_idx = CPU_MMU_INDEX;
  95     if (unlikely(env->tlb_table[mmu_idx][page_index].ADDR_READ !=
  96                  (addr & (TARGET_PAGE_MASK | (DATA_SIZE - 1))))) {
  97         res = glue(glue(__ld, SUFFIX), MMUSUFFIX)(addr, mmu_idx);
  98     } else {
  99         physaddr = addr + env->tlb_table[mmu_idx][page_index].addend;
 100         res = glue(glue(ld, USUFFIX), _raw)((uint8_t *)physaddr);
 101     }
 102     return res;
 103 }
 104
 105 #if DATA_SIZE <= 2
 106 static inline int glue(glue(lds, SUFFIX), MEMSUFFIX)(target_ulong ptr)
 107 {
 108     int res, page_index;
 109     target_ulong addr;
 110     uintptr_t physaddr;
 111     int mmu_idx;
 112
 113     addr = ptr;
 114     page_index = (addr >> TARGET_PAGE_BITS) & (CPU_TLB_SIZE - 1);
 115     mmu_idx = CPU_MMU_INDEX;
 116     if (unlikely(env->tlb_table[mmu_idx][page_index].ADDR_READ !=
 117                  (addr & (TARGET_PAGE_MASK | (DATA_SIZE - 1))))) {
 118         res = (DATA_STYPE)glue(glue(__ld, SUFFIX), MMUSUFFIX)(addr, mmu_idx);
 119     } else {
 120         physaddr = addr + env->tlb_table[mmu_idx][page_index].addend;
 121         res = glue(glue(lds, SUFFIX), _raw)((uint8_t *)physaddr);
 122     }
 123     return res;
 124 }
 125 #endif
 126
 127 #if ACCESS_TYPE != (NB_MMU_MODES + 1)
 128
 129 /* generic store macro */
 130
 131 static inline void glue(glue(st, SUFFIX), MEMSUFFIX)(target_ulong ptr, RES_TYPE v)
 132 {
 133     int page_index;
 134     target_ulong addr;
 135     uintptr_t physaddr;
 136     int mmu_idx;
 137
 138     addr = ptr;
 139     page_index = (addr >> TARGET_PAGE_BITS) & (CPU_TLB_SIZE - 1);
 140     mmu_idx = CPU_MMU_INDEX;
 141     if (unlikely(env->tlb_table[mmu_idx][page_index].addr_write !=
 142                  (addr & (TARGET_PAGE_MASK | (DATA_SIZE - 1))))) {
 143         glue(glue(__st, SUFFIX), MMUSUFFIX)(addr, v, mmu_idx);
 144     } else {
 145         physaddr = addr + env->tlb_table[mmu_idx][page_index].addend;
 146         glue(glue(st, SUFFIX), _raw)((uint8_t *)physaddr, v);
 147     }
 148 }
 149
 150 #endif /* ACCESS_TYPE != (NB_MMU_MODES + 1) */
 151
 152 #if ACCESS_TYPE != (NB_MMU_MODES + 1)
 153
 154 #if DATA_SIZE == 8
 155 static inline float64 glue(ldfq, MEMSUFFIX)(target_ulong ptr)
 156 {
 157     union {
 158         float64 d;
 159         uint64_t i;
 160     } u;
 161     u.i = glue(ldq, MEMSUFFIX)(ptr);
 162     return u.d;
 163 }
 164
 165 static inline void glue(stfq, MEMSUFFIX)(target_ulong ptr, float64 v)
 166 {
 167     union {
 168         float64 d;
 169         uint64_t i;
 170     } u;
 171     u.d = v;
 172     glue(stq, MEMSUFFIX)(ptr, u.i);
 173 }
 174 #endif /* DATA_SIZE == 8 */
 175
 176 #if DATA_SIZE == 4
 177 static inline float32 glue(ldfl, MEMSUFFIX)(target_ulong ptr)
 178 {
 179     union {
 180         float32 f;
 181         uint32_t i;
 182     } u;
 183     u.i = glue(ldl, MEMSUFFIX)(ptr);
 184     return u.f;
 185 }
 186
 187 static inline void glue(stfl, MEMSUFFIX)(target_ulong ptr, float32 v)
 188 {
 189     union {
 190         float32 f;
 191         uint32_t i;
 192     } u;
 193     u.f = v;
 194     glue(stl, MEMSUFFIX)(ptr, u.i);
 195 }
 196 #endif /* DATA_SIZE == 4 */
 197
 198 #endif /* ACCESS_TYPE != (NB_MMU_MODES + 1) */
 199
 200 #undef RES_TYPE
 201 #undef DATA_TYPE
 202 #undef DATA_STYPE
 203 #undef SUFFIX
 204 #undef USUFFIX
 205 #undef DATA_SIZE
 206 #undef CPU_MMU_INDEX
 207 #undef MMUSUFFIX
 208 #undef ADDR_READ