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 /* generic load/store macros */
  82
  83 static inline RES_TYPE
  84 glue(glue(cpu_ld, USUFFIX), MEMSUFFIX)(CPUArchState *env, target_ulong ptr)
  85 {
  86     int page_index;
  87     RES_TYPE res;
  88     target_ulong addr;
  89     int mmu_idx;
  90
  91     addr = ptr;
  92     page_index = (addr >> TARGET_PAGE_BITS) & (CPU_TLB_SIZE - 1);
  93     mmu_idx = CPU_MMU_INDEX;
  94     if (unlikely(env->tlb_table[mmu_idx][page_index].ADDR_READ !=
  95                  (addr & (TARGET_PAGE_MASK | (DATA_SIZE - 1))))) {
  96         res = glue(glue(helper_ld, SUFFIX), MMUSUFFIX)(env, addr, mmu_idx);
  97     } else {
  98         uintptr_t hostaddr = addr + env->tlb_table[mmu_idx][page_index].addend;
  99         res = glue(glue(ld, USUFFIX), _raw)(hostaddr);
 100     }
 101     return res;
 102 }
 103
 104 #if DATA_SIZE <= 2
 105 static inline int
 106 glue(glue(cpu_lds, SUFFIX), MEMSUFFIX)(CPUArchState *env, target_ulong ptr)
 107 {
 108     int res, page_index;
 109     target_ulong addr;
 110     int mmu_idx;
 111
 112     addr = ptr;
 113     page_index = (addr >> TARGET_PAGE_BITS) & (CPU_TLB_SIZE - 1);
 114     mmu_idx = CPU_MMU_INDEX;
 115     if (unlikely(env->tlb_table[mmu_idx][page_index].ADDR_READ !=
 116                  (addr & (TARGET_PAGE_MASK | (DATA_SIZE - 1))))) {
 117         res = (DATA_STYPE)glue(glue(helper_ld, SUFFIX),
 118                                MMUSUFFIX)(env, addr, mmu_idx);
 119     } else {
 120         uintptr_t hostaddr = addr + env->tlb_table[mmu_idx][page_index].addend;
 121         res = glue(glue(lds, SUFFIX), _raw)(hostaddr);
 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
 132 glue(glue(cpu_st, SUFFIX), MEMSUFFIX)(CPUArchState *env, target_ulong ptr,
 133                                       RES_TYPE v)
 134 {
 135     int page_index;
 136     target_ulong addr;
 137     int mmu_idx;
 138
 139     addr = ptr;
 140     page_index = (addr >> TARGET_PAGE_BITS) & (CPU_TLB_SIZE - 1);
 141     mmu_idx = CPU_MMU_INDEX;
 142     if (unlikely(env->tlb_table[mmu_idx][page_index].addr_write !=
 143                  (addr & (TARGET_PAGE_MASK | (DATA_SIZE - 1))))) {
 144         glue(glue(helper_st, SUFFIX), MMUSUFFIX)(env, addr, v, mmu_idx);
 145     } else {
 146         uintptr_t hostaddr = addr + env->tlb_table[mmu_idx][page_index].addend;
 147         glue(glue(st, SUFFIX), _raw)(hostaddr, v);
 148     }
 149 }
 150
 151 #endif /* ACCESS_TYPE != (NB_MMU_MODES + 1) */
 152
 153 #if ACCESS_TYPE != (NB_MMU_MODES + 1)
 154
 155 #if DATA_SIZE == 8
 156 static inline float64 glue(cpu_ldfq, MEMSUFFIX)(CPUArchState *env,
 157                                                 target_ulong ptr)
 158 {
 159     union {
 160         float64 d;
 161         uint64_t i;
 162     } u;
 163     u.i = glue(cpu_ldq, MEMSUFFIX)(env, ptr);
 164     return u.d;
 165 }
 166
 167 static inline void glue(cpu_stfq, MEMSUFFIX)(CPUArchState *env,
 168                                              target_ulong ptr, float64 v)
 169 {
 170     union {
 171         float64 d;
 172         uint64_t i;
 173     } u;
 174     u.d = v;
 175     glue(cpu_stq, MEMSUFFIX)(env, ptr, u.i);
 176 }
 177 #endif /* DATA_SIZE == 8 */
 178
 179 #if DATA_SIZE == 4
 180 static inline float32 glue(cpu_ldfl, MEMSUFFIX)(CPUArchState *env,
 181                                                 target_ulong ptr)
 182 {
 183     union {
 184         float32 f;
 185         uint32_t i;
 186     } u;
 187     u.i = glue(cpu_ldl, MEMSUFFIX)(env, ptr);
 188     return u.f;
 189 }
 190
 191 static inline void glue(cpu_stfl, MEMSUFFIX)(CPUArchState *env,
 192                                              target_ulong ptr, float32 v)
 193 {
 194     union {
 195         float32 f;
 196         uint32_t i;
 197     } u;
 198     u.f = v;
 199     glue(cpu_stl, MEMSUFFIX)(env, ptr, u.i);
 200 }
 201 #endif /* DATA_SIZE == 4 */
 202
 203 #endif /* ACCESS_TYPE != (NB_MMU_MODES + 1) */
 204
 205 #undef RES_TYPE
 206 #undef DATA_TYPE
 207 #undef DATA_STYPE
 208 #undef SUFFIX
 209 #undef USUFFIX
 210 #undef DATA_SIZE
 211 #undef CPU_MMU_INDEX
 212 #undef MMUSUFFIX
 213 #undef ADDR_READ