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, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  */
  20 #if DATA_SIZE == 8
  21 #define SUFFIX q
  22 #define USUFFIX q
  23 #define DATA_TYPE uint64_t
  24 #elif DATA_SIZE == 4
  25 #define SUFFIX l
  26 #define USUFFIX l
  27 #define DATA_TYPE uint32_t
  28 #elif DATA_SIZE == 2
  29 #define SUFFIX w
  30 #define USUFFIX uw
  31 #define DATA_TYPE uint16_t
  32 #define DATA_STYPE int16_t
  33 #elif DATA_SIZE == 1
  34 #define SUFFIX b
  35 #define USUFFIX ub
  36 #define DATA_TYPE uint8_t
  37 #define DATA_STYPE int8_t
  38 #else
  39 #error unsupported data size
  40 #endif
  41
  42 #if ACCESS_TYPE < (NB_MMU_MODES)
  43
  44 #define CPU_MMU_INDEX ACCESS_TYPE
  45 #define MMUSUFFIX _mmu
  46
  47 #elif ACCESS_TYPE == (NB_MMU_MODES)
  48
  49 #define CPU_MMU_INDEX (cpu_mmu_index(env))
  50 #define MMUSUFFIX _mmu
  51
  52 #elif ACCESS_TYPE == (NB_MMU_MODES + 1)
  53
  54 #define CPU_MMU_INDEX (cpu_mmu_index(env))
  55 #define MMUSUFFIX _cmmu
  56
  57 #else
  58 #error invalid ACCESS_TYPE
  59 #endif
  60
  61 #if DATA_SIZE == 8
  62 #define RES_TYPE uint64_t
  63 #else
  64 #define RES_TYPE int
  65 #endif
  66
  67 #if ACCESS_TYPE == (NB_MMU_MODES + 1)
  68 #define ADDR_READ addr_code
  69 #else
  70 #define ADDR_READ addr_read
  71 #endif
  72
  73 DATA_TYPE REGPARM glue(glue(__ld, SUFFIX), MMUSUFFIX)(target_ulong addr,
  74                                                          int mmu_idx);
  75 void REGPARM glue(glue(__st, SUFFIX), MMUSUFFIX)(target_ulong addr, DATA_TYPE v, int mmu_idx);
  76
  77 #if (DATA_SIZE <= 4) && (TARGET_LONG_BITS == 32) && defined(__i386__) && \
  78     (ACCESS_TYPE < NB_MMU_MODES) && defined(ASM_SOFTMMU)
  79
  80 static inline RES_TYPE glue(glue(ld, USUFFIX), MEMSUFFIX)(target_ulong ptr)
  81 {
  82     int res;
  83
  84     asm volatile ("movl %1, %%edx\n"
  85                   "movl %1, %%eax\n"
  86                   "shrl %3, %%edx\n"
  87                   "andl %4, %%eax\n"
  88                   "andl %2, %%edx\n"
  89                   "leal %5(%%edx, %%ebp), %%edx\n"
  90                   "cmpl (%%edx), %%eax\n"
  91                   "movl %1, %%eax\n"
  92                   "je 1f\n"
  93                   "movl %6, %%edx\n"
  94                   "call %7\n"
  95                   "movl %%eax, %0\n"
  96                   "jmp 2f\n"
  97                   "1:\n"
  98                   "addl 12(%%edx), %%eax\n"
  99 #if DATA_SIZE == 1
 100                   "movzbl (%%eax), %0\n"
 101 #elif DATA_SIZE == 2
 102                   "movzwl (%%eax), %0\n"
 103 #elif DATA_SIZE == 4
 104                   "movl (%%eax), %0\n"
 105 #else
 106 #error unsupported size
 107 #endif
 108                   "2:\n"
 109                   : "=r" (res)
 110                   : "r" (ptr),
 111                   "i" ((CPU_TLB_SIZE - 1) << CPU_TLB_ENTRY_BITS),
 112                   "i" (TARGET_PAGE_BITS - CPU_TLB_ENTRY_BITS),
 113                   "i" (TARGET_PAGE_MASK | (DATA_SIZE - 1)),
 114                   "m" (*(uint32_t *)offsetof(CPUState, tlb_table[CPU_MMU_INDEX][0].addr_read)),
 115                   "i" (CPU_MMU_INDEX),
 116                   "m" (*(uint8_t *)&glue(glue(__ld, SUFFIX), MMUSUFFIX))
 117                   : "%eax", "%ecx", "%edx", "memory", "cc");
 118     return res;
 119 }
 120
 121 #if DATA_SIZE <= 2
 122 static inline int glue(glue(lds, SUFFIX), MEMSUFFIX)(target_ulong ptr)
 123 {
 124     int res;
 125
 126     asm volatile ("movl %1, %%edx\n"
 127                   "movl %1, %%eax\n"
 128                   "shrl %3, %%edx\n"
 129                   "andl %4, %%eax\n"
 130                   "andl %2, %%edx\n"
 131                   "leal %5(%%edx, %%ebp), %%edx\n"
 132                   "cmpl (%%edx), %%eax\n"
 133                   "movl %1, %%eax\n"
 134                   "je 1f\n"
 135                   "movl %6, %%edx\n"
 136                   "call %7\n"
 137 #if DATA_SIZE == 1
 138                   "movsbl %%al, %0\n"
 139 #elif DATA_SIZE == 2
 140                   "movswl %%ax, %0\n"
 141 #else
 142 #error unsupported size
 143 #endif
 144                   "jmp 2f\n"
 145                   "1:\n"
 146                   "addl 12(%%edx), %%eax\n"
 147 #if DATA_SIZE == 1
 148                   "movsbl (%%eax), %0\n"
 149 #elif DATA_SIZE == 2
 150                   "movswl (%%eax), %0\n"
 151 #else
 152 #error unsupported size
 153 #endif
 154                   "2:\n"
 155                   : "=r" (res)
 156                   : "r" (ptr),
 157                   "i" ((CPU_TLB_SIZE - 1) << CPU_TLB_ENTRY_BITS),
 158                   "i" (TARGET_PAGE_BITS - CPU_TLB_ENTRY_BITS),
 159                   "i" (TARGET_PAGE_MASK | (DATA_SIZE - 1)),
 160                   "m" (*(uint32_t *)offsetof(CPUState, tlb_table[CPU_MMU_INDEX][0].addr_read)),
 161                   "i" (CPU_MMU_INDEX),
 162                   "m" (*(uint8_t *)&glue(glue(__ld, SUFFIX), MMUSUFFIX))
 163                   : "%eax", "%ecx", "%edx", "memory", "cc");
 164     return res;
 165 }
 166 #endif
 167
 168 static inline void glue(glue(st, SUFFIX), MEMSUFFIX)(target_ulong ptr, RES_TYPE v)
 169 {
 170     asm volatile ("movl %0, %%edx\n"
 171                   "movl %0, %%eax\n"
 172                   "shrl %3, %%edx\n"
 173                   "andl %4, %%eax\n"
 174                   "andl %2, %%edx\n"
 175                   "leal %5(%%edx, %%ebp), %%edx\n"
 176                   "cmpl (%%edx), %%eax\n"
 177                   "movl %0, %%eax\n"
 178                   "je 1f\n"
 179 #if DATA_SIZE == 1
 180                   "movzbl %b1, %%edx\n"
 181 #elif DATA_SIZE == 2
 182                   "movzwl %w1, %%edx\n"
 183 #elif DATA_SIZE == 4
 184                   "movl %1, %%edx\n"
 185 #else
 186 #error unsupported size
 187 #endif
 188                   "movl %6, %%ecx\n"
 189                   "call %7\n"
 190                   "jmp 2f\n"
 191                   "1:\n"
 192                   "addl 8(%%edx), %%eax\n"
 193 #if DATA_SIZE == 1
 194                   "movb %b1, (%%eax)\n"
 195 #elif DATA_SIZE == 2
 196                   "movw %w1, (%%eax)\n"
 197 #elif DATA_SIZE == 4
 198                   "movl %1, (%%eax)\n"
 199 #else
 200 #error unsupported size
 201 #endif
 202                   "2:\n"
 203                   :
 204                   : "r" (ptr),
 205 #if DATA_SIZE == 1
 206                   "q" (v),
 207 #else
 208                   "r" (v),
 209 #endif
 210                   "i" ((CPU_TLB_SIZE - 1) << CPU_TLB_ENTRY_BITS),
 211                   "i" (TARGET_PAGE_BITS - CPU_TLB_ENTRY_BITS),
 212                   "i" (TARGET_PAGE_MASK | (DATA_SIZE - 1)),
 213                   "m" (*(uint32_t *)offsetof(CPUState, tlb_table[CPU_MMU_INDEX][0].addr_write)),
 214                   "i" (CPU_MMU_INDEX),
 215                   "m" (*(uint8_t *)&glue(glue(__st, SUFFIX), MMUSUFFIX))
 216                   : "%eax", "%ecx", "%edx", "memory", "cc");
 217 }
 218
 219 #else
 220
 221 /* generic load/store macros */
 222
 223 static inline RES_TYPE glue(glue(ld, USUFFIX), MEMSUFFIX)(target_ulong ptr)
 224 {
 225     int page_index;
 226     RES_TYPE res;
 227     target_ulong addr;
 228     unsigned long physaddr;
 229     int mmu_idx;
 230
 231     addr = ptr;
 232     page_index = (addr >> TARGET_PAGE_BITS) & (CPU_TLB_SIZE - 1);
 233     mmu_idx = CPU_MMU_INDEX;
 234     if (unlikely(env->tlb_table[mmu_idx][page_index].ADDR_READ !=
 235                  (addr & (TARGET_PAGE_MASK | (DATA_SIZE - 1))))) {
 236         res = glue(glue(__ld, SUFFIX), MMUSUFFIX)(addr, mmu_idx);
 237     } else {
 238         physaddr = addr + env->tlb_table[mmu_idx][page_index].addend;
 239         res = glue(glue(ld, USUFFIX), _raw)((uint8_t *)physaddr);
 240     }
 241     return res;
 242 }
 243
 244 #if DATA_SIZE <= 2
 245 static inline int glue(glue(lds, SUFFIX), MEMSUFFIX)(target_ulong ptr)
 246 {
 247     int res, page_index;
 248     target_ulong addr;
 249     unsigned long physaddr;
 250     int mmu_idx;
 251
 252     addr = ptr;
 253     page_index = (addr >> TARGET_PAGE_BITS) & (CPU_TLB_SIZE - 1);
 254     mmu_idx = CPU_MMU_INDEX;
 255     if (unlikely(env->tlb_table[mmu_idx][page_index].ADDR_READ !=
 256                  (addr & (TARGET_PAGE_MASK | (DATA_SIZE - 1))))) {
 257         res = (DATA_STYPE)glue(glue(__ld, SUFFIX), MMUSUFFIX)(addr, mmu_idx);
 258     } else {
 259         physaddr = addr + env->tlb_table[mmu_idx][page_index].addend;
 260         res = glue(glue(lds, SUFFIX), _raw)((uint8_t *)physaddr);
 261     }
 262     return res;
 263 }
 264 #endif
 265
 266 #if ACCESS_TYPE != (NB_MMU_MODES + 1)
 267
 268 /* generic store macro */
 269
 270 static inline void glue(glue(st, SUFFIX), MEMSUFFIX)(target_ulong ptr, RES_TYPE v)
 271 {
 272     int page_index;
 273     target_ulong addr;
 274     unsigned long physaddr;
 275     int mmu_idx;
 276
 277     addr = ptr;
 278     page_index = (addr >> TARGET_PAGE_BITS) & (CPU_TLB_SIZE - 1);
 279     mmu_idx = CPU_MMU_INDEX;
 280     if (unlikely(env->tlb_table[mmu_idx][page_index].addr_write !=
 281                  (addr & (TARGET_PAGE_MASK | (DATA_SIZE - 1))))) {
 282         glue(glue(__st, SUFFIX), MMUSUFFIX)(addr, v, mmu_idx);
 283     } else {
 284         physaddr = addr + env->tlb_table[mmu_idx][page_index].addend;
 285         glue(glue(st, SUFFIX), _raw)((uint8_t *)physaddr, v);
 286     }
 287 }
 288
 289 #endif /* ACCESS_TYPE != (NB_MMU_MODES + 1) */
 290
 291 #endif /* !asm */
 292
 293 #if ACCESS_TYPE != (NB_MMU_MODES + 1)
 294
 295 #if DATA_SIZE == 8
 296 static inline float64 glue(ldfq, MEMSUFFIX)(target_ulong ptr)
 297 {
 298     union {
 299         float64 d;
 300         uint64_t i;
 301     } u;
 302     u.i = glue(ldq, MEMSUFFIX)(ptr);
 303     return u.d;
 304 }
 305
 306 static inline void glue(stfq, MEMSUFFIX)(target_ulong ptr, float64 v)
 307 {
 308     union {
 309         float64 d;
 310         uint64_t i;
 311     } u;
 312     u.d = v;
 313     glue(stq, MEMSUFFIX)(ptr, u.i);
 314 }
 315 #endif /* DATA_SIZE == 8 */
 316
 317 #if DATA_SIZE == 4
 318 static inline float32 glue(ldfl, MEMSUFFIX)(target_ulong ptr)
 319 {
 320     union {
 321         float32 f;
 322         uint32_t i;
 323     } u;
 324     u.i = glue(ldl, MEMSUFFIX)(ptr);
 325     return u.f;
 326 }
 327
 328 static inline void glue(stfl, MEMSUFFIX)(target_ulong ptr, float32 v)
 329 {
 330     union {
 331         float32 f;
 332         uint32_t i;
 333     } u;
 334     u.f = v;
 335     glue(stl, MEMSUFFIX)(ptr, u.i);
 336 }
 337 #endif /* DATA_SIZE == 4 */
 338
 339 #endif /* ACCESS_TYPE != (NB_MMU_MODES + 1) */
 340
 341 #undef RES_TYPE
 342 #undef DATA_TYPE
 343 #undef DATA_STYPE
 344 #undef SUFFIX
 345 #undef USUFFIX
 346 #undef DATA_SIZE
 347 #undef CPU_MMU_INDEX
 348 #undef MMUSUFFIX
 349 #undef ADDR_READ