| 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 |
|
|---|
| 21 | #if DATA_SIZE == 8
|
|---|
| 22 | #define SUFFIX q
|
|---|
| 23 | #define USUFFIX q
|
|---|
| 24 | #define DATA_TYPE uint64_t
|
|---|
| 25 | #elif DATA_SIZE == 4
|
|---|
| 26 | #define SUFFIX l
|
|---|
| 27 | #define USUFFIX l
|
|---|
| 28 | #define DATA_TYPE uint32_t
|
|---|
| 29 | #elif DATA_SIZE == 2
|
|---|
| 30 | #define SUFFIX w
|
|---|
| 31 | #define USUFFIX uw
|
|---|
| 32 | #define DATA_TYPE uint16_t
|
|---|
| 33 | #define DATA_STYPE int16_t
|
|---|
| 34 | #elif DATA_SIZE == 1
|
|---|
| 35 | #define SUFFIX b
|
|---|
| 36 | #define USUFFIX ub
|
|---|
| 37 | #define DATA_TYPE uint8_t
|
|---|
| 38 | #define DATA_STYPE int8_t
|
|---|
| 39 | #else
|
|---|
| 40 | #error unsupported data size
|
|---|
| 41 | #endif
|
|---|
| 42 |
|
|---|
| 43 | #if ACCESS_TYPE == 0
|
|---|
| 44 |
|
|---|
| 45 | #define CPU_MEM_INDEX 0
|
|---|
| 46 | #define MMUSUFFIX _mmu
|
|---|
| 47 |
|
|---|
| 48 | #elif ACCESS_TYPE == 1
|
|---|
| 49 |
|
|---|
| 50 | #define CPU_MEM_INDEX 1
|
|---|
| 51 | #define MMUSUFFIX _mmu
|
|---|
| 52 |
|
|---|
| 53 | #elif ACCESS_TYPE == 2
|
|---|
| 54 |
|
|---|
| 55 | #ifdef TARGET_I386
|
|---|
| 56 | #define CPU_MEM_INDEX ((env->hflags & HF_CPL_MASK) == 3)
|
|---|
| 57 | #elif defined (TARGET_PPC)
|
|---|
| 58 | #define CPU_MEM_INDEX (msr_pr)
|
|---|
| 59 | #elif defined (TARGET_SPARC)
|
|---|
| 60 | #define CPU_MEM_INDEX ((env->psrs) == 0)
|
|---|
| 61 | #endif
|
|---|
| 62 | #define MMUSUFFIX _mmu
|
|---|
| 63 |
|
|---|
| 64 | #elif ACCESS_TYPE == 3
|
|---|
| 65 |
|
|---|
| 66 | #ifdef TARGET_I386
|
|---|
| 67 | #define CPU_MEM_INDEX ((env->hflags & HF_CPL_MASK) == 3)
|
|---|
| 68 | #elif defined (TARGET_PPC)
|
|---|
| 69 | #define CPU_MEM_INDEX (msr_pr)
|
|---|
| 70 | #elif defined (TARGET_SPARC)
|
|---|
| 71 | #define CPU_MEM_INDEX ((env->psrs) == 0)
|
|---|
| 72 | #endif
|
|---|
| 73 | #define MMUSUFFIX _cmmu
|
|---|
| 74 |
|
|---|
| 75 | #else
|
|---|
| 76 | #error invalid ACCESS_TYPE
|
|---|
| 77 | #endif
|
|---|
| 78 |
|
|---|
| 79 | #if DATA_SIZE == 8
|
|---|
| 80 | #define RES_TYPE uint64_t
|
|---|
| 81 | #else
|
|---|
| 82 | #define RES_TYPE int
|
|---|
| 83 | #endif
|
|---|
| 84 |
|
|---|
| 85 |
|
|---|
| 86 | DATA_TYPE REGPARM(1) glue(glue(__ld, SUFFIX), MMUSUFFIX)(target_ulong addr,
|
|---|
| 87 | int is_user);
|
|---|
| 88 | void REGPARM(2) glue(glue(__st, SUFFIX), MMUSUFFIX)(target_ulong addr, DATA_TYPE v, int is_user);
|
|---|
| 89 |
|
|---|
| 90 | #if (DATA_SIZE <= 4) && (TARGET_LONG_BITS == 32) && defined(__i386__) && \
|
|---|
| 91 | (ACCESS_TYPE <= 1) && defined(ASM_SOFTMMU)
|
|---|
| 92 |
|
|---|
| 93 | static inline RES_TYPE glue(glue(ld, USUFFIX), MEMSUFFIX)(target_ulong ptr)
|
|---|
| 94 | {
|
|---|
| 95 | int res;
|
|---|
| 96 |
|
|---|
| 97 | asm volatile ("movl %1, %%edx\n"
|
|---|
| 98 | "movl %1, %%eax\n"
|
|---|
| 99 | "shrl %3, %%edx\n"
|
|---|
| 100 | "andl %4, %%eax\n"
|
|---|
| 101 | "andl %2, %%edx\n"
|
|---|
| 102 | "leal %5(%%edx, %%ebp), %%edx\n"
|
|---|
| 103 | "cmpl (%%edx), %%eax\n"
|
|---|
| 104 | "movl %1, %%eax\n"
|
|---|
| 105 | "je 1f\n"
|
|---|
| 106 | "pushl %6\n"
|
|---|
| 107 | "call %7\n"
|
|---|
| 108 | "popl %%edx\n"
|
|---|
| 109 | "movl %%eax, %0\n"
|
|---|
| 110 | "jmp 2f\n"
|
|---|
| 111 | "1:\n"
|
|---|
| 112 | "addl 4(%%edx), %%eax\n"
|
|---|
| 113 | #if DATA_SIZE == 1
|
|---|
| 114 | "movzbl (%%eax), %0\n"
|
|---|
| 115 | #elif DATA_SIZE == 2
|
|---|
| 116 | "movzwl (%%eax), %0\n"
|
|---|
| 117 | #elif DATA_SIZE == 4
|
|---|
| 118 | "movl (%%eax), %0\n"
|
|---|
| 119 | #else
|
|---|
| 120 | #error unsupported size
|
|---|
| 121 | #endif
|
|---|
| 122 | "2:\n"
|
|---|
| 123 | : "=r" (res)
|
|---|
| 124 | : "r" (ptr),
|
|---|
| 125 | "i" ((CPU_TLB_SIZE - 1) << 3),
|
|---|
| 126 | "i" (TARGET_PAGE_BITS - 3),
|
|---|
| 127 | "i" (TARGET_PAGE_MASK | (DATA_SIZE - 1)),
|
|---|
| 128 | "m" (*(uint32_t *)offsetof(CPUState, tlb_read[CPU_MEM_INDEX][0].address)),
|
|---|
| 129 | "i" (CPU_MEM_INDEX),
|
|---|
| 130 | "m" (*(uint8_t *)&glue(glue(__ld, SUFFIX), MMUSUFFIX))
|
|---|
| 131 | : "%eax", "%ecx", "%edx", "memory", "cc");
|
|---|
| 132 | return res;
|
|---|
| 133 | }
|
|---|
| 134 |
|
|---|
| 135 | #if DATA_SIZE <= 2
|
|---|
| 136 | static inline int glue(glue(lds, SUFFIX), MEMSUFFIX)(target_ulong ptr)
|
|---|
| 137 | {
|
|---|
| 138 | int res;
|
|---|
| 139 |
|
|---|
| 140 | asm volatile ("movl %1, %%edx\n"
|
|---|
| 141 | "movl %1, %%eax\n"
|
|---|
| 142 | "shrl %3, %%edx\n"
|
|---|
| 143 | "andl %4, %%eax\n"
|
|---|
| 144 | "andl %2, %%edx\n"
|
|---|
| 145 | "leal %5(%%edx, %%ebp), %%edx\n"
|
|---|
| 146 | "cmpl (%%edx), %%eax\n"
|
|---|
| 147 | "movl %1, %%eax\n"
|
|---|
| 148 | "je 1f\n"
|
|---|
| 149 | "pushl %6\n"
|
|---|
| 150 | "call %7\n"
|
|---|
| 151 | "popl %%edx\n"
|
|---|
| 152 | #if DATA_SIZE == 1
|
|---|
| 153 | "movsbl %%al, %0\n"
|
|---|
| 154 | #elif DATA_SIZE == 2
|
|---|
| 155 | "movswl %%ax, %0\n"
|
|---|
| 156 | #else
|
|---|
| 157 | #error unsupported size
|
|---|
| 158 | #endif
|
|---|
| 159 | "jmp 2f\n"
|
|---|
| 160 | "1:\n"
|
|---|
| 161 | "addl 4(%%edx), %%eax\n"
|
|---|
| 162 | #if DATA_SIZE == 1
|
|---|
| 163 | "movsbl (%%eax), %0\n"
|
|---|
| 164 | #elif DATA_SIZE == 2
|
|---|
| 165 | "movswl (%%eax), %0\n"
|
|---|
| 166 | #else
|
|---|
| 167 | #error unsupported size
|
|---|
| 168 | #endif
|
|---|
| 169 | "2:\n"
|
|---|
| 170 | : "=r" (res)
|
|---|
| 171 | : "r" (ptr),
|
|---|
| 172 | "i" ((CPU_TLB_SIZE - 1) << 3),
|
|---|
| 173 | "i" (TARGET_PAGE_BITS - 3),
|
|---|
| 174 | "i" (TARGET_PAGE_MASK | (DATA_SIZE - 1)),
|
|---|
| 175 | "m" (*(uint32_t *)offsetof(CPUState, tlb_read[CPU_MEM_INDEX][0].address)),
|
|---|
| 176 | "i" (CPU_MEM_INDEX),
|
|---|
| 177 | "m" (*(uint8_t *)&glue(glue(__ld, SUFFIX), MMUSUFFIX))
|
|---|
| 178 | : "%eax", "%ecx", "%edx", "memory", "cc");
|
|---|
| 179 | return res;
|
|---|
| 180 | }
|
|---|
| 181 | #endif
|
|---|
| 182 |
|
|---|
| 183 | #ifdef VBOX
|
|---|
| 184 | /* generic store macro */
|
|---|
| 185 |
|
|---|
| 186 | static inline void glue(glue(st, SUFFIX), MEMSUFFIX)(target_ulong ptr, RES_TYPE v)
|
|---|
| 187 | {
|
|---|
| 188 | int index;
|
|---|
| 189 | target_ulong addr;
|
|---|
| 190 | unsigned long physaddr;
|
|---|
| 191 | int is_user;
|
|---|
| 192 |
|
|---|
| 193 | addr = ptr;
|
|---|
| 194 | index = (addr >> TARGET_PAGE_BITS) & (CPU_TLB_SIZE - 1);
|
|---|
| 195 | is_user = CPU_MEM_INDEX;
|
|---|
| 196 | if (__builtin_expect(env->tlb_write[is_user][index].address !=
|
|---|
| 197 | (addr & (TARGET_PAGE_MASK | (DATA_SIZE - 1))), 0)) {
|
|---|
| 198 | glue(glue(__st, SUFFIX), MMUSUFFIX)(addr, v, is_user);
|
|---|
| 199 | } else {
|
|---|
| 200 | physaddr = addr + env->tlb_write[is_user][index].addend;
|
|---|
| 201 | glue(glue(st, SUFFIX), _raw)((uint8_t *)physaddr, v);
|
|---|
| 202 | }
|
|---|
| 203 | }
|
|---|
| 204 |
|
|---|
| 205 | #else
|
|---|
| 206 |
|
|---|
| 207 | static inline void glue(glue(st, SUFFIX), MEMSUFFIX)(target_ulong ptr, RES_TYPE v)
|
|---|
| 208 | {
|
|---|
| 209 | asm volatile ("movl %0, %%edx\n"
|
|---|
| 210 | "movl %0, %%eax\n"
|
|---|
| 211 | "shrl %3, %%edx\n"
|
|---|
| 212 | "andl %4, %%eax\n"
|
|---|
| 213 | "andl %2, %%edx\n"
|
|---|
| 214 | "leal %5(%%edx, %%ebp), %%edx\n"
|
|---|
| 215 | "cmpl (%%edx), %%eax\n"
|
|---|
| 216 | "movl %0, %%eax\n"
|
|---|
| 217 | "je 1f\n"
|
|---|
| 218 | #if DATA_SIZE == 1
|
|---|
| 219 | "movzbl %b1, %%edx\n"
|
|---|
| 220 | #elif DATA_SIZE == 2
|
|---|
| 221 | "movzwl %w1, %%edx\n"
|
|---|
| 222 | #elif DATA_SIZE == 4
|
|---|
| 223 | "movl %1, %%edx\n"
|
|---|
| 224 | #else
|
|---|
| 225 | #error unsupported size
|
|---|
| 226 | #endif
|
|---|
| 227 | "pushl %6\n"
|
|---|
| 228 | "call %7\n"
|
|---|
| 229 | "popl %%eax\n"
|
|---|
| 230 | "jmp 2f\n"
|
|---|
| 231 | "1:\n"
|
|---|
| 232 | "addl 4(%%edx), %%eax\n"
|
|---|
| 233 | #if DATA_SIZE == 1
|
|---|
| 234 | "movb %b1, (%%eax)\n"
|
|---|
| 235 | #elif DATA_SIZE == 2
|
|---|
| 236 | "movw %w1, (%%eax)\n"
|
|---|
| 237 | #elif DATA_SIZE == 4
|
|---|
| 238 | "movl %1, (%%eax)\n"
|
|---|
| 239 | #else
|
|---|
| 240 | #error unsupported size
|
|---|
| 241 | #endif
|
|---|
| 242 | "2:\n"
|
|---|
| 243 | :
|
|---|
| 244 | : "r" (ptr),
|
|---|
| 245 | /* NOTE: 'q' would be needed as constraint, but we could not use it
|
|---|
| 246 | with T1 ! */
|
|---|
| 247 | "r" (v),
|
|---|
| 248 | "i" ((CPU_TLB_SIZE - 1) << 3),
|
|---|
| 249 | "i" (TARGET_PAGE_BITS - 3),
|
|---|
| 250 | "i" (TARGET_PAGE_MASK | (DATA_SIZE - 1)),
|
|---|
| 251 | "m" (*(uint32_t *)offsetof(CPUState, tlb_write[CPU_MEM_INDEX][0].address)),
|
|---|
| 252 | "i" (CPU_MEM_INDEX),
|
|---|
| 253 | "m" (*(uint8_t *)&glue(glue(__st, SUFFIX), MMUSUFFIX))
|
|---|
| 254 | : "%eax", "%ecx", "%edx", "memory", "cc");
|
|---|
| 255 | }
|
|---|
| 256 | #endif /* VBOX */
|
|---|
| 257 |
|
|---|
| 258 | #else
|
|---|
| 259 |
|
|---|
| 260 | /* generic load/store macros */
|
|---|
| 261 |
|
|---|
| 262 | static inline RES_TYPE glue(glue(ld, USUFFIX), MEMSUFFIX)(target_ulong ptr)
|
|---|
| 263 | {
|
|---|
| 264 | int index;
|
|---|
| 265 | RES_TYPE res;
|
|---|
| 266 | target_ulong addr;
|
|---|
| 267 | unsigned long physaddr;
|
|---|
| 268 | int is_user;
|
|---|
| 269 |
|
|---|
| 270 | addr = ptr;
|
|---|
| 271 | index = (addr >> TARGET_PAGE_BITS) & (CPU_TLB_SIZE - 1);
|
|---|
| 272 | is_user = CPU_MEM_INDEX;
|
|---|
| 273 | if (__builtin_expect(env->tlb_read[is_user][index].address !=
|
|---|
| 274 | (addr & (TARGET_PAGE_MASK | (DATA_SIZE - 1))), 0)) {
|
|---|
| 275 | res = glue(glue(__ld, SUFFIX), MMUSUFFIX)(addr, is_user);
|
|---|
| 276 | } else {
|
|---|
| 277 | physaddr = addr + env->tlb_read[is_user][index].addend;
|
|---|
| 278 | res = glue(glue(ld, USUFFIX), _raw)((uint8_t *)physaddr);
|
|---|
| 279 | }
|
|---|
| 280 | return res;
|
|---|
| 281 | }
|
|---|
| 282 |
|
|---|
| 283 | #if DATA_SIZE <= 2
|
|---|
| 284 | static inline int glue(glue(lds, SUFFIX), MEMSUFFIX)(target_ulong ptr)
|
|---|
| 285 | {
|
|---|
| 286 | int res, index;
|
|---|
| 287 | target_ulong addr;
|
|---|
| 288 | unsigned long physaddr;
|
|---|
| 289 | int is_user;
|
|---|
| 290 |
|
|---|
| 291 | addr = ptr;
|
|---|
| 292 | index = (addr >> TARGET_PAGE_BITS) & (CPU_TLB_SIZE - 1);
|
|---|
| 293 | is_user = CPU_MEM_INDEX;
|
|---|
| 294 | if (__builtin_expect(env->tlb_read[is_user][index].address !=
|
|---|
| 295 | (addr & (TARGET_PAGE_MASK | (DATA_SIZE - 1))), 0)) {
|
|---|
| 296 | res = (DATA_STYPE)glue(glue(__ld, SUFFIX), MMUSUFFIX)(addr, is_user);
|
|---|
| 297 | } else {
|
|---|
| 298 | physaddr = addr + env->tlb_read[is_user][index].addend;
|
|---|
| 299 | res = glue(glue(lds, SUFFIX), _raw)((uint8_t *)physaddr);
|
|---|
| 300 | }
|
|---|
| 301 | return res;
|
|---|
| 302 | }
|
|---|
| 303 | #endif
|
|---|
| 304 |
|
|---|
| 305 | /* generic store macro */
|
|---|
| 306 |
|
|---|
| 307 | static inline void glue(glue(st, SUFFIX), MEMSUFFIX)(target_ulong ptr, RES_TYPE v)
|
|---|
| 308 | {
|
|---|
| 309 | int index;
|
|---|
| 310 | target_ulong addr;
|
|---|
| 311 | unsigned long physaddr;
|
|---|
| 312 | int is_user;
|
|---|
| 313 |
|
|---|
| 314 | addr = ptr;
|
|---|
| 315 | index = (addr >> TARGET_PAGE_BITS) & (CPU_TLB_SIZE - 1);
|
|---|
| 316 | is_user = CPU_MEM_INDEX;
|
|---|
| 317 | if (__builtin_expect(env->tlb_write[is_user][index].address !=
|
|---|
| 318 | (addr & (TARGET_PAGE_MASK | (DATA_SIZE - 1))), 0)) {
|
|---|
| 319 | glue(glue(__st, SUFFIX), MMUSUFFIX)(addr, v, is_user);
|
|---|
| 320 | } else {
|
|---|
| 321 | physaddr = addr + env->tlb_write[is_user][index].addend;
|
|---|
| 322 | glue(glue(st, SUFFIX), _raw)((uint8_t *)physaddr, v);
|
|---|
| 323 | }
|
|---|
| 324 | }
|
|---|
| 325 |
|
|---|
| 326 | #endif
|
|---|
| 327 |
|
|---|
| 328 | #if DATA_SIZE == 8
|
|---|
| 329 | static inline double glue(ldfq, MEMSUFFIX)(target_ulong ptr)
|
|---|
| 330 | {
|
|---|
| 331 | union {
|
|---|
| 332 | double d;
|
|---|
| 333 | uint64_t i;
|
|---|
| 334 | } u;
|
|---|
| 335 | u.i = glue(ldq, MEMSUFFIX)(ptr);
|
|---|
| 336 | return u.d;
|
|---|
| 337 | }
|
|---|
| 338 |
|
|---|
| 339 | static inline void glue(stfq, MEMSUFFIX)(target_ulong ptr, double v)
|
|---|
| 340 | {
|
|---|
| 341 | union {
|
|---|
| 342 | double d;
|
|---|
| 343 | uint64_t i;
|
|---|
| 344 | } u;
|
|---|
| 345 | u.d = v;
|
|---|
| 346 | glue(stq, MEMSUFFIX)(ptr, u.i);
|
|---|
| 347 | }
|
|---|
| 348 | #endif /* DATA_SIZE == 8 */
|
|---|
| 349 |
|
|---|
| 350 | #if DATA_SIZE == 4
|
|---|
| 351 | static inline float glue(ldfl, MEMSUFFIX)(target_ulong ptr)
|
|---|
| 352 | {
|
|---|
| 353 | union {
|
|---|
| 354 | float f;
|
|---|
| 355 | uint32_t i;
|
|---|
| 356 | } u;
|
|---|
| 357 | u.i = glue(ldl, MEMSUFFIX)(ptr);
|
|---|
| 358 | return u.f;
|
|---|
| 359 | }
|
|---|
| 360 |
|
|---|
| 361 | static inline void glue(stfl, MEMSUFFIX)(target_ulong ptr, float v)
|
|---|
| 362 | {
|
|---|
| 363 | union {
|
|---|
| 364 | float f;
|
|---|
| 365 | uint32_t i;
|
|---|
| 366 | } u;
|
|---|
| 367 | u.f = v;
|
|---|
| 368 | glue(stl, MEMSUFFIX)(ptr, u.i);
|
|---|
| 369 | }
|
|---|
| 370 | #endif /* DATA_SIZE == 4 */
|
|---|
| 371 |
|
|---|
| 372 | #undef RES_TYPE
|
|---|
| 373 | #undef DATA_TYPE
|
|---|
| 374 | #undef DATA_STYPE
|
|---|
| 375 | #undef SUFFIX
|
|---|
| 376 | #undef USUFFIX
|
|---|
| 377 | #undef DATA_SIZE
|
|---|
| 378 | #undef CPU_MEM_INDEX
|
|---|
| 379 | #undef MMUSUFFIX
|
|---|
