target-ppc/op_helper_mem.h

   1 /*
   2  *  PowerPC emulation micro-operations helpers for qemu.
   3  *
   4  *  Copyright (c) 2003-2007 Jocelyn Mayer
   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 /* Multiple word / string load and store */
  22 static inline target_ulong glue(ld32r, MEMSUFFIX) (target_ulong EA)
  23 {
  24     uint32_t tmp = glue(ldl, MEMSUFFIX)(EA);
  25     return ((tmp & 0xFF000000UL) >> 24) | ((tmp & 0x00FF0000UL) >> 8) |
  26         ((tmp & 0x0000FF00UL) << 8) | ((tmp & 0x000000FFUL) << 24);
  27 }
  28
  29 static inline void glue(st32r, MEMSUFFIX) (target_ulong EA, target_ulong data)
  30 {
  31     uint32_t tmp =
  32         ((data & 0xFF000000UL) >> 24) | ((data & 0x00FF0000UL) >> 8) |
  33         ((data & 0x0000FF00UL) << 8) | ((data & 0x000000FFUL) << 24);
  34     glue(stl, MEMSUFFIX)(EA, tmp);
  35 }
  36
  37 void glue(do_lmw, MEMSUFFIX) (int dst)
  38 {
  39     for (; dst < 32; dst++, T0 += 4) {
  40         ugpr(dst) = glue(ldl, MEMSUFFIX)((uint32_t)T0);
  41     }
  42 }
  43
  44 #if defined(TARGET_PPC64)
  45 void glue(do_lmw_64, MEMSUFFIX) (int dst)
  46 {
  47     for (; dst < 32; dst++, T0 += 4) {
  48         ugpr(dst) = glue(ldl, MEMSUFFIX)((uint64_t)T0);
  49     }
  50 }
  51 #endif
  52
  53 void glue(do_stmw, MEMSUFFIX) (int src)
  54 {
  55     for (; src < 32; src++, T0 += 4) {
  56         glue(stl, MEMSUFFIX)((uint32_t)T0, ugpr(src));
  57     }
  58 }
  59
  60 #if defined(TARGET_PPC64)
  61 void glue(do_stmw_64, MEMSUFFIX) (int src)
  62 {
  63     for (; src < 32; src++, T0 += 4) {
  64         glue(stl, MEMSUFFIX)((uint64_t)T0, ugpr(src));
  65     }
  66 }
  67 #endif
  68
  69 void glue(do_lmw_le, MEMSUFFIX) (int dst)
  70 {
  71     for (; dst < 32; dst++, T0 += 4) {
  72         ugpr(dst) = glue(ld32r, MEMSUFFIX)((uint32_t)T0);
  73     }
  74 }
  75
  76 #if defined(TARGET_PPC64)
  77 void glue(do_lmw_le_64, MEMSUFFIX) (int dst)
  78 {
  79     for (; dst < 32; dst++, T0 += 4) {
  80         ugpr(dst) = glue(ld32r, MEMSUFFIX)((uint64_t)T0);
  81     }
  82 }
  83 #endif
  84
  85 void glue(do_stmw_le, MEMSUFFIX) (int src)
  86 {
  87     for (; src < 32; src++, T0 += 4) {
  88         glue(st32r, MEMSUFFIX)((uint32_t)T0, ugpr(src));
  89     }
  90 }
  91
  92 #if defined(TARGET_PPC64)
  93 void glue(do_stmw_le_64, MEMSUFFIX) (int src)
  94 {
  95     for (; src < 32; src++, T0 += 4) {
  96         glue(st32r, MEMSUFFIX)((uint64_t)T0, ugpr(src));
  97     }
  98 }
  99 #endif
 100
 101 void glue(do_lsw, MEMSUFFIX) (int dst)
 102 {
 103     uint32_t tmp;
 104     int sh;
 105
 106     for (; T1 > 3; T1 -= 4, T0 += 4) {
 107         ugpr(dst++) = glue(ldl, MEMSUFFIX)((uint32_t)T0);
 108         if (unlikely(dst == 32))
 109             dst = 0;
 110     }
 111     if (unlikely(T1 != 0)) {
 112         tmp = 0;
 113         for (sh = 24; T1 > 0; T1--, T0++, sh -= 8) {
 114             tmp |= glue(ldub, MEMSUFFIX)((uint32_t)T0) << sh;
 115         }
 116         ugpr(dst) = tmp;
 117     }
 118 }
 119
 120 #if defined(TARGET_PPC64)
 121 void glue(do_lsw_64, MEMSUFFIX) (int dst)
 122 {
 123     uint32_t tmp;
 124     int sh;
 125
 126     for (; T1 > 3; T1 -= 4, T0 += 4) {
 127         ugpr(dst++) = glue(ldl, MEMSUFFIX)((uint64_t)T0);
 128         if (unlikely(dst == 32))
 129             dst = 0;
 130     }
 131     if (unlikely(T1 != 0)) {
 132         tmp = 0;
 133         for (sh = 24; T1 > 0; T1--, T0++, sh -= 8) {
 134             tmp |= glue(ldub, MEMSUFFIX)((uint64_t)T0) << sh;
 135         }
 136         ugpr(dst) = tmp;
 137     }
 138 }
 139 #endif
 140
 141 void glue(do_stsw, MEMSUFFIX) (int src)
 142 {
 143     int sh;
 144
 145     for (; T1 > 3; T1 -= 4, T0 += 4) {
 146         glue(stl, MEMSUFFIX)((uint32_t)T0, ugpr(src++));
 147         if (unlikely(src == 32))
 148             src = 0;
 149     }
 150     if (unlikely(T1 != 0)) {
 151         for (sh = 24; T1 > 0; T1--, T0++, sh -= 8)
 152             glue(stb, MEMSUFFIX)((uint32_t)T0, (ugpr(src) >> sh) & 0xFF);
 153     }
 154 }
 155
 156 #if defined(TARGET_PPC64)
 157 void glue(do_stsw_64, MEMSUFFIX) (int src)
 158 {
 159     int sh;
 160
 161     for (; T1 > 3; T1 -= 4, T0 += 4) {
 162         glue(stl, MEMSUFFIX)((uint64_t)T0, ugpr(src++));
 163         if (unlikely(src == 32))
 164             src = 0;
 165     }
 166     if (unlikely(T1 != 0)) {
 167         for (sh = 24; T1 > 0; T1--, T0++, sh -= 8)
 168             glue(stb, MEMSUFFIX)((uint64_t)T0, (ugpr(src) >> sh) & 0xFF);
 169     }
 170 }
 171 #endif
 172
 173 void glue(do_lsw_le, MEMSUFFIX) (int dst)
 174 {
 175     uint32_t tmp;
 176     int sh;
 177
 178     for (; T1 > 3; T1 -= 4, T0 += 4) {
 179         ugpr(dst++) = glue(ld32r, MEMSUFFIX)((uint32_t)T0);
 180         if (unlikely(dst == 32))
 181             dst = 0;
 182     }
 183     if (unlikely(T1 != 0)) {
 184         tmp = 0;
 185         for (sh = 0; T1 > 0; T1--, T0++, sh += 8) {
 186             tmp |= glue(ldub, MEMSUFFIX)((uint32_t)T0) << sh;
 187         }
 188         ugpr(dst) = tmp;
 189     }
 190 }
 191
 192 #if defined(TARGET_PPC64)
 193 void glue(do_lsw_le_64, MEMSUFFIX) (int dst)
 194 {
 195     uint32_t tmp;
 196     int sh;
 197
 198     for (; T1 > 3; T1 -= 4, T0 += 4) {
 199         ugpr(dst++) = glue(ld32r, MEMSUFFIX)((uint64_t)T0);
 200         if (unlikely(dst == 32))
 201             dst = 0;
 202     }
 203     if (unlikely(T1 != 0)) {
 204         tmp = 0;
 205         for (sh = 0; T1 > 0; T1--, T0++, sh += 8) {
 206             tmp |= glue(ldub, MEMSUFFIX)((uint64_t)T0) << sh;
 207         }
 208         ugpr(dst) = tmp;
 209     }
 210 }
 211 #endif
 212
 213 void glue(do_stsw_le, MEMSUFFIX) (int src)
 214 {
 215     int sh;
 216
 217     for (; T1 > 3; T1 -= 4, T0 += 4) {
 218         glue(st32r, MEMSUFFIX)((uint32_t)T0, ugpr(src++));
 219         if (unlikely(src == 32))
 220             src = 0;
 221     }
 222     if (unlikely(T1 != 0)) {
 223         for (sh = 0; T1 > 0; T1--, T0++, sh += 8)
 224             glue(stb, MEMSUFFIX)((uint32_t)T0, (ugpr(src) >> sh) & 0xFF);
 225     }
 226 }
 227
 228 #if defined(TARGET_PPC64)
 229 void glue(do_stsw_le_64, MEMSUFFIX) (int src)
 230 {
 231     int sh;
 232
 233     for (; T1 > 3; T1 -= 4, T0 += 4) {
 234         glue(st32r, MEMSUFFIX)((uint64_t)T0, ugpr(src++));
 235         if (unlikely(src == 32))
 236             src = 0;
 237     }
 238     if (unlikely(T1 != 0)) {
 239         for (sh = 0; T1 > 0; T1--, T0++, sh += 8)
 240             glue(stb, MEMSUFFIX)((uint64_t)T0, (ugpr(src) >> sh) & 0xFF);
 241     }
 242 }
 243 #endif
 244
 245 /* Instruction cache invalidation helper */
 246 void glue(do_icbi, MEMSUFFIX) (void)
 247 {
 248     uint32_t tmp;
 249     /* Invalidate one cache line :
 250      * PowerPC specification says this is to be treated like a load
 251      * (not a fetch) by the MMU. To be sure it will be so,
 252      * do the load "by hand".
 253      */
 254     tmp = glue(ldl, MEMSUFFIX)((uint32_t)T0);
 255     T0 &= ~(ICACHE_LINE_SIZE - 1);
 256     tb_invalidate_page_range((uint32_t)T0, (uint32_t)(T0 + ICACHE_LINE_SIZE));
 257 }
 258
 259 #if defined(TARGET_PPC64)
 260 void glue(do_icbi_64, MEMSUFFIX) (void)
 261 {
 262     uint64_t tmp;
 263     /* Invalidate one cache line :
 264      * PowerPC specification says this is to be treated like a load
 265      * (not a fetch) by the MMU. To be sure it will be so,
 266      * do the load "by hand".
 267      */
 268     tmp = glue(ldq, MEMSUFFIX)((uint64_t)T0);
 269     T0 &= ~(ICACHE_LINE_SIZE - 1);
 270     tb_invalidate_page_range((uint64_t)T0, (uint64_t)(T0 + ICACHE_LINE_SIZE));
 271 }
 272 #endif
 273
 274 /* PPC 601 specific instructions (POWER bridge) */
 275 // XXX: to be tested
 276 void glue(do_POWER_lscbx, MEMSUFFIX) (int dest, int ra, int rb)
 277 {
 278     int i, c, d, reg;
 279
 280     d = 24;
 281     reg = dest;
 282     for (i = 0; i < T1; i++) {
 283         c = glue(ldub, MEMSUFFIX)((uint32_t)T0++);
 284         /* ra (if not 0) and rb are never modified */
 285         if (likely(reg != rb && (ra == 0 || reg != ra))) {
 286             ugpr(reg) = (ugpr(reg) & ~(0xFF << d)) | (c << d);
 287         }
 288         if (unlikely(c == T2))
 289             break;
 290         if (likely(d != 0)) {
 291             d -= 8;
 292         } else {
 293             d = 24;
 294             reg++;
 295             reg = reg & 0x1F;
 296         }
 297     }
 298     T0 = i;
 299 }
 300
 301 /* XXX: TAGs are not managed */
 302 void glue(do_POWER2_lfq, MEMSUFFIX) (void)
 303 {
 304     FT0 = glue(ldfq, MEMSUFFIX)((uint32_t)T0);
 305     FT1 = glue(ldfq, MEMSUFFIX)((uint32_t)(T0 + 4));
 306 }
 307
 308 static inline double glue(ldfqr, MEMSUFFIX) (target_ulong EA)
 309 {
 310     union {
 311         double d;
 312         uint64_t u;
 313     } u;
 314
 315     u.d = glue(ldfq, MEMSUFFIX)(EA);
 316     u.u = ((u.u & 0xFF00000000000000ULL) >> 56) |
 317         ((u.u & 0x00FF000000000000ULL) >> 40) |
 318         ((u.u & 0x0000FF0000000000ULL) >> 24) |
 319         ((u.u & 0x000000FF00000000ULL) >> 8) |
 320         ((u.u & 0x00000000FF000000ULL) << 8) |
 321         ((u.u & 0x0000000000FF0000ULL) << 24) |
 322         ((u.u & 0x000000000000FF00ULL) << 40) |
 323         ((u.u & 0x00000000000000FFULL) << 56);
 324
 325     return u.d;
 326 }
 327
 328 void glue(do_POWER2_lfq_le, MEMSUFFIX) (void)
 329 {
 330     FT0 = glue(ldfqr, MEMSUFFIX)((uint32_t)(T0 + 4));
 331     FT1 = glue(ldfqr, MEMSUFFIX)((uint32_t)T0);
 332 }
 333
 334 void glue(do_POWER2_stfq, MEMSUFFIX) (void)
 335 {
 336     glue(stfq, MEMSUFFIX)((uint32_t)T0, FT0);
 337     glue(stfq, MEMSUFFIX)((uint32_t)(T0 + 4), FT1);
 338 }
 339
 340 static inline void glue(stfqr, MEMSUFFIX) (target_ulong EA, double d)
 341 {
 342     union {
 343         double d;
 344         uint64_t u;
 345     } u;
 346
 347     u.d = d;
 348     u.u = ((u.u & 0xFF00000000000000ULL) >> 56) |
 349         ((u.u & 0x00FF000000000000ULL) >> 40) |
 350         ((u.u & 0x0000FF0000000000ULL) >> 24) |
 351         ((u.u & 0x000000FF00000000ULL) >> 8) |
 352         ((u.u & 0x00000000FF000000ULL) << 8) |
 353         ((u.u & 0x0000000000FF0000ULL) << 24) |
 354         ((u.u & 0x000000000000FF00ULL) << 40) |
 355         ((u.u & 0x00000000000000FFULL) << 56);
 356     glue(stfq, MEMSUFFIX)(EA, u.d);
 357 }
 358
 359 void glue(do_POWER2_stfq_le, MEMSUFFIX) (void)
 360 {
 361     glue(stfqr, MEMSUFFIX)((uint32_t)(T0 + 4), FT0);
 362     glue(stfqr, MEMSUFFIX)((uint32_t)T0, FT1);
 363 }
 364
 365 #undef MEMSUFFIX