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1.1 ! root 1: /* ! 2: * PowerPC emulation helpers for qemu. ! 3: * ! 4: * Copyright (c) 2003-2005 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: #include <stdarg.h> ! 21: #include <stdlib.h> ! 22: #include <stdio.h> ! 23: #include <string.h> ! 24: #include <inttypes.h> ! 25: #include <signal.h> ! 26: #include <assert.h> ! 27: ! 28: #include "cpu.h" ! 29: #include "exec-all.h" ! 30: ! 31: //#define DEBUG_MMU ! 32: //#define DEBUG_BATS ! 33: //#define DEBUG_EXCEPTIONS ! 34: //#define FLUSH_ALL_TLBS ! 35: ! 36: /*****************************************************************************/ ! 37: /* PowerPC MMU emulation */ ! 38: ! 39: /* Perform BAT hit & translation */ ! 40: static int get_bat (CPUState *env, uint32_t *real, int *prot, ! 41: uint32_t virtual, int rw, int type) ! 42: { ! 43: uint32_t *BATlt, *BATut, *BATu, *BATl; ! 44: uint32_t base, BEPIl, BEPIu, bl; ! 45: int i; ! 46: int ret = -1; ! 47: ! 48: #if defined (DEBUG_BATS) ! 49: if (loglevel > 0) { ! 50: fprintf(logfile, "%s: %cBAT v 0x%08x\n", __func__, ! 51: type == ACCESS_CODE ? 'I' : 'D', virtual); ! 52: } ! 53: #endif ! 54: switch (type) { ! 55: case ACCESS_CODE: ! 56: BATlt = env->IBAT[1]; ! 57: BATut = env->IBAT[0]; ! 58: break; ! 59: default: ! 60: BATlt = env->DBAT[1]; ! 61: BATut = env->DBAT[0]; ! 62: break; ! 63: } ! 64: #if defined (DEBUG_BATS) ! 65: if (loglevel > 0) { ! 66: fprintf(logfile, "%s...: %cBAT v 0x%08x\n", __func__, ! 67: type == ACCESS_CODE ? 'I' : 'D', virtual); ! 68: } ! 69: #endif ! 70: base = virtual & 0xFFFC0000; ! 71: for (i = 0; i < 4; i++) { ! 72: BATu = &BATut[i]; ! 73: BATl = &BATlt[i]; ! 74: BEPIu = *BATu & 0xF0000000; ! 75: BEPIl = *BATu & 0x0FFE0000; ! 76: bl = (*BATu & 0x00001FFC) << 15; ! 77: #if defined (DEBUG_BATS) ! 78: if (loglevel > 0) { ! 79: fprintf(logfile, "%s: %cBAT%d v 0x%08x BATu 0x%08x BATl 0x%08x\n", ! 80: __func__, type == ACCESS_CODE ? 'I' : 'D', i, virtual, ! 81: *BATu, *BATl); ! 82: } ! 83: #endif ! 84: if ((virtual & 0xF0000000) == BEPIu && ! 85: ((virtual & 0x0FFE0000) & ~bl) == BEPIl) { ! 86: /* BAT matches */ ! 87: if ((msr_pr == 0 && (*BATu & 0x00000002)) || ! 88: (msr_pr == 1 && (*BATu & 0x00000001))) { ! 89: /* Get physical address */ ! 90: *real = (*BATl & 0xF0000000) | ! 91: ((virtual & 0x0FFE0000 & bl) | (*BATl & 0x0FFE0000)) | ! 92: (virtual & 0x0001F000); ! 93: if (*BATl & 0x00000001) ! 94: *prot = PAGE_READ; ! 95: if (*BATl & 0x00000002) ! 96: *prot = PAGE_WRITE | PAGE_READ; ! 97: #if defined (DEBUG_BATS) ! 98: if (loglevel > 0) { ! 99: fprintf(logfile, "BAT %d match: r 0x%08x prot=%c%c\n", ! 100: i, *real, *prot & PAGE_READ ? 'R' : '-', ! 101: *prot & PAGE_WRITE ? 'W' : '-'); ! 102: } ! 103: #endif ! 104: ret = 0; ! 105: break; ! 106: } ! 107: } ! 108: } ! 109: if (ret < 0) { ! 110: #if defined (DEBUG_BATS) ! 111: printf("no BAT match for 0x%08x:\n", virtual); ! 112: for (i = 0; i < 4; i++) { ! 113: BATu = &BATut[i]; ! 114: BATl = &BATlt[i]; ! 115: BEPIu = *BATu & 0xF0000000; ! 116: BEPIl = *BATu & 0x0FFE0000; ! 117: bl = (*BATu & 0x00001FFC) << 15; ! 118: printf("%s: %cBAT%d v 0x%08x BATu 0x%08x BATl 0x%08x \n\t" ! 119: "0x%08x 0x%08x 0x%08x\n", ! 120: __func__, type == ACCESS_CODE ? 'I' : 'D', i, virtual, ! 121: *BATu, *BATl, BEPIu, BEPIl, bl); ! 122: } ! 123: #endif ! 124: } ! 125: /* No hit */ ! 126: return ret; ! 127: } ! 128: ! 129: /* PTE table lookup */ ! 130: static int find_pte (uint32_t *RPN, int *prot, uint32_t base, uint32_t va, ! 131: int h, int key, int rw) ! 132: { ! 133: uint32_t pte0, pte1, keep = 0, access = 0; ! 134: int i, good = -1, store = 0; ! 135: int ret = -1; /* No entry found */ ! 136: ! 137: for (i = 0; i < 8; i++) { ! 138: pte0 = ldl_phys(base + (i * 8)); ! 139: pte1 = ldl_phys(base + (i * 8) + 4); ! 140: #if defined (DEBUG_MMU) ! 141: if (loglevel > 0) { ! 142: fprintf(logfile, "Load pte from 0x%08x => 0x%08x 0x%08x " ! 143: "%d %d %d 0x%08x\n", base + (i * 8), pte0, pte1, ! 144: pte0 >> 31, h, (pte0 >> 6) & 1, va); ! 145: } ! 146: #endif ! 147: /* Check validity and table match */ ! 148: if (pte0 & 0x80000000 && (h == ((pte0 >> 6) & 1))) { ! 149: /* Check vsid & api */ ! 150: if ((pte0 & 0x7FFFFFBF) == va) { ! 151: if (good == -1) { ! 152: good = i; ! 153: keep = pte1; ! 154: } else { ! 155: /* All matches should have equal RPN, WIMG & PP */ ! 156: if ((keep & 0xFFFFF07B) != (pte1 & 0xFFFFF07B)) { ! 157: if (loglevel > 0) ! 158: fprintf(logfile, "Bad RPN/WIMG/PP\n"); ! 159: return -1; ! 160: } ! 161: } ! 162: /* Check access rights */ ! 163: if (key == 0) { ! 164: access = PAGE_READ; ! 165: if ((pte1 & 0x00000003) != 0x3) ! 166: access |= PAGE_WRITE; ! 167: } else { ! 168: switch (pte1 & 0x00000003) { ! 169: case 0x0: ! 170: access = 0; ! 171: break; ! 172: case 0x1: ! 173: case 0x3: ! 174: access = PAGE_READ; ! 175: break; ! 176: case 0x2: ! 177: access = PAGE_READ | PAGE_WRITE; ! 178: break; ! 179: } ! 180: } ! 181: if (ret < 0) { ! 182: if ((rw == 0 && (access & PAGE_READ)) || ! 183: (rw == 1 && (access & PAGE_WRITE))) { ! 184: #if defined (DEBUG_MMU) ! 185: if (loglevel > 0) ! 186: fprintf(logfile, "PTE access granted !\n"); ! 187: #endif ! 188: good = i; ! 189: keep = pte1; ! 190: ret = 0; ! 191: } else { ! 192: /* Access right violation */ ! 193: ret = -2; ! 194: #if defined (DEBUG_MMU) ! 195: if (loglevel > 0) ! 196: fprintf(logfile, "PTE access rejected\n"); ! 197: #endif ! 198: } ! 199: *prot = access; ! 200: } ! 201: } ! 202: } ! 203: } ! 204: if (good != -1) { ! 205: *RPN = keep & 0xFFFFF000; ! 206: #if defined (DEBUG_MMU) ! 207: if (loglevel > 0) { ! 208: fprintf(logfile, "found PTE at addr 0x%08x prot=0x%01x ret=%d\n", ! 209: *RPN, *prot, ret); ! 210: } ! 211: #endif ! 212: /* Update page flags */ ! 213: if (!(keep & 0x00000100)) { ! 214: /* Access flag */ ! 215: keep |= 0x00000100; ! 216: store = 1; ! 217: } ! 218: if (!(keep & 0x00000080)) { ! 219: if (rw && ret == 0) { ! 220: /* Change flag */ ! 221: keep |= 0x00000080; ! 222: store = 1; ! 223: } else { ! 224: /* Force page fault for first write access */ ! 225: *prot &= ~PAGE_WRITE; ! 226: } ! 227: } ! 228: if (store) { ! 229: stl_phys_notdirty(base + (good * 8) + 4, keep); ! 230: } ! 231: } ! 232: ! 233: return ret; ! 234: } ! 235: ! 236: static inline uint32_t get_pgaddr (uint32_t sdr1, uint32_t hash, uint32_t mask) ! 237: { ! 238: return (sdr1 & 0xFFFF0000) | (hash & mask); ! 239: } ! 240: ! 241: /* Perform segment based translation */ ! 242: static int get_segment (CPUState *env, uint32_t *real, int *prot, ! 243: uint32_t virtual, int rw, int type) ! 244: { ! 245: uint32_t pg_addr, sdr, ptem, vsid, pgidx; ! 246: uint32_t hash, mask; ! 247: uint32_t sr; ! 248: int key; ! 249: int ret = -1, ret2; ! 250: ! 251: sr = env->sr[virtual >> 28]; ! 252: #if defined (DEBUG_MMU) ! 253: if (loglevel > 0) { ! 254: fprintf(logfile, "Check segment v=0x%08x %d 0x%08x nip=0x%08x " ! 255: "lr=0x%08x ir=%d dr=%d pr=%d %d t=%d\n", ! 256: virtual, virtual >> 28, sr, env->nip, ! 257: env->lr, msr_ir, msr_dr, msr_pr, rw, type); ! 258: } ! 259: #endif ! 260: key = (((sr & 0x20000000) && msr_pr == 1) || ! 261: ((sr & 0x40000000) && msr_pr == 0)) ? 1 : 0; ! 262: if ((sr & 0x80000000) == 0) { ! 263: #if defined (DEBUG_MMU) ! 264: if (loglevel > 0) ! 265: fprintf(logfile, "pte segment: key=%d n=0x%08x\n", ! 266: key, sr & 0x10000000); ! 267: #endif ! 268: /* Check if instruction fetch is allowed, if needed */ ! 269: if (type != ACCESS_CODE || (sr & 0x10000000) == 0) { ! 270: /* Page address translation */ ! 271: vsid = sr & 0x00FFFFFF; ! 272: pgidx = (virtual >> 12) & 0xFFFF; ! 273: sdr = env->sdr1; ! 274: hash = ((vsid ^ pgidx) & 0x0007FFFF) << 6; ! 275: mask = ((sdr & 0x000001FF) << 16) | 0xFFC0; ! 276: pg_addr = get_pgaddr(sdr, hash, mask); ! 277: ptem = (vsid << 7) | (pgidx >> 10); ! 278: #if defined (DEBUG_MMU) ! 279: if (loglevel > 0) { ! 280: fprintf(logfile, "0 sdr1=0x%08x vsid=0x%06x api=0x%04x " ! 281: "hash=0x%07x pg_addr=0x%08x\n", sdr, vsid, pgidx, hash, ! 282: pg_addr); ! 283: } ! 284: #endif ! 285: /* Primary table lookup */ ! 286: ret = find_pte(real, prot, pg_addr, ptem, 0, key, rw); ! 287: if (ret < 0) { ! 288: /* Secondary table lookup */ ! 289: hash = (~hash) & 0x01FFFFC0; ! 290: pg_addr = get_pgaddr(sdr, hash, mask); ! 291: #if defined (DEBUG_MMU) ! 292: if (virtual != 0xEFFFFFFF && loglevel > 0) { ! 293: fprintf(logfile, "1 sdr1=0x%08x vsid=0x%06x api=0x%04x " ! 294: "hash=0x%05x pg_addr=0x%08x\n", sdr, vsid, pgidx, ! 295: hash, pg_addr); ! 296: } ! 297: #endif ! 298: ret2 = find_pte(real, prot, pg_addr, ptem, 1, key, rw); ! 299: if (ret2 != -1) ! 300: ret = ret2; ! 301: } ! 302: } else { ! 303: #if defined (DEBUG_MMU) ! 304: if (loglevel > 0) ! 305: fprintf(logfile, "No access allowed\n"); ! 306: #endif ! 307: ret = -3; ! 308: } ! 309: } else { ! 310: #if defined (DEBUG_MMU) ! 311: if (loglevel > 0) ! 312: fprintf(logfile, "direct store...\n"); ! 313: #endif ! 314: /* Direct-store segment : absolutely *BUGGY* for now */ ! 315: switch (type) { ! 316: case ACCESS_INT: ! 317: /* Integer load/store : only access allowed */ ! 318: break; ! 319: case ACCESS_CODE: ! 320: /* No code fetch is allowed in direct-store areas */ ! 321: return -4; ! 322: case ACCESS_FLOAT: ! 323: /* Floating point load/store */ ! 324: return -4; ! 325: case ACCESS_RES: ! 326: /* lwarx, ldarx or srwcx. */ ! 327: return -4; ! 328: case ACCESS_CACHE: ! 329: /* dcba, dcbt, dcbtst, dcbf, dcbi, dcbst, dcbz, or icbi */ ! 330: /* Should make the instruction do no-op. ! 331: * As it already do no-op, it's quite easy :-) ! 332: */ ! 333: *real = virtual; ! 334: return 0; ! 335: case ACCESS_EXT: ! 336: /* eciwx or ecowx */ ! 337: return -4; ! 338: default: ! 339: if (logfile) { ! 340: fprintf(logfile, "ERROR: instruction should not need " ! 341: "address translation\n"); ! 342: } ! 343: printf("ERROR: instruction should not need " ! 344: "address translation\n"); ! 345: return -4; ! 346: } ! 347: if ((rw == 1 || key != 1) && (rw == 0 || key != 0)) { ! 348: *real = virtual; ! 349: ret = 2; ! 350: } else { ! 351: ret = -2; ! 352: } ! 353: } ! 354: ! 355: return ret; ! 356: } ! 357: ! 358: int get_physical_address (CPUState *env, uint32_t *physical, int *prot, ! 359: uint32_t address, int rw, int access_type) ! 360: { ! 361: int ret; ! 362: #if 0 ! 363: if (loglevel > 0) { ! 364: fprintf(logfile, "%s\n", __func__); ! 365: } ! 366: #endif ! 367: if ((access_type == ACCESS_CODE && msr_ir == 0) || ! 368: (access_type != ACCESS_CODE && msr_dr == 0)) { ! 369: /* No address translation */ ! 370: *physical = address & ~0xFFF; ! 371: *prot = PAGE_READ | PAGE_WRITE; ! 372: ret = 0; ! 373: } else { ! 374: /* Try to find a BAT */ ! 375: ret = get_bat(env, physical, prot, address, rw, access_type); ! 376: if (ret < 0) { ! 377: /* We didn't match any BAT entry */ ! 378: ret = get_segment(env, physical, prot, address, rw, access_type); ! 379: } ! 380: } ! 381: #if 0 ! 382: if (loglevel > 0) { ! 383: fprintf(logfile, "%s address %08x => %08x\n", ! 384: __func__, address, *physical); ! 385: } ! 386: #endif ! 387: return ret; ! 388: } ! 389: ! 390: #if defined(CONFIG_USER_ONLY) ! 391: target_ulong cpu_get_phys_page_debug(CPUState *env, target_ulong addr) ! 392: { ! 393: return addr; ! 394: } ! 395: #else ! 396: target_ulong cpu_get_phys_page_debug(CPUState *env, target_ulong addr) ! 397: { ! 398: uint32_t phys_addr; ! 399: int prot; ! 400: ! 401: if (get_physical_address(env, &phys_addr, &prot, addr, 0, ACCESS_INT) != 0) ! 402: return -1; ! 403: return phys_addr; ! 404: } ! 405: #endif ! 406: ! 407: /* Perform address translation */ ! 408: int cpu_ppc_handle_mmu_fault (CPUState *env, uint32_t address, int rw, ! 409: int is_user, int is_softmmu) ! 410: { ! 411: uint32_t physical; ! 412: int prot; ! 413: int exception = 0, error_code = 0; ! 414: int access_type; ! 415: int ret = 0; ! 416: ! 417: if (rw == 2) { ! 418: /* code access */ ! 419: rw = 0; ! 420: access_type = ACCESS_CODE; ! 421: } else { ! 422: /* data access */ ! 423: /* XXX: put correct access by using cpu_restore_state() ! 424: correctly */ ! 425: access_type = ACCESS_INT; ! 426: // access_type = env->access_type; ! 427: } ! 428: if (env->user_mode_only) { ! 429: /* user mode only emulation */ ! 430: ret = -2; ! 431: goto do_fault; ! 432: } ! 433: ret = get_physical_address(env, &physical, &prot, ! 434: address, rw, access_type); ! 435: if (ret == 0) { ! 436: ret = tlb_set_page(env, address & ~0xFFF, physical, prot, ! 437: is_user, is_softmmu); ! 438: } else if (ret < 0) { ! 439: do_fault: ! 440: #if defined (DEBUG_MMU) ! 441: if (loglevel > 0) ! 442: cpu_dump_state(env, logfile, fprintf, 0); ! 443: #endif ! 444: if (access_type == ACCESS_CODE) { ! 445: exception = EXCP_ISI; ! 446: switch (ret) { ! 447: case -1: ! 448: /* No matches in page tables */ ! 449: error_code = 0x40000000; ! 450: break; ! 451: case -2: ! 452: /* Access rights violation */ ! 453: error_code = 0x08000000; ! 454: break; ! 455: case -3: ! 456: /* No execute protection violation */ ! 457: error_code = 0x10000000; ! 458: break; ! 459: case -4: ! 460: /* Direct store exception */ ! 461: /* No code fetch is allowed in direct-store areas */ ! 462: error_code = 0x10000000; ! 463: break; ! 464: case -5: ! 465: /* No match in segment table */ ! 466: exception = EXCP_ISEG; ! 467: error_code = 0; ! 468: break; ! 469: } ! 470: } else { ! 471: exception = EXCP_DSI; ! 472: switch (ret) { ! 473: case -1: ! 474: /* No matches in page tables */ ! 475: error_code = 0x40000000; ! 476: break; ! 477: case -2: ! 478: /* Access rights violation */ ! 479: error_code = 0x08000000; ! 480: break; ! 481: case -4: ! 482: /* Direct store exception */ ! 483: switch (access_type) { ! 484: case ACCESS_FLOAT: ! 485: /* Floating point load/store */ ! 486: exception = EXCP_ALIGN; ! 487: error_code = EXCP_ALIGN_FP; ! 488: break; ! 489: case ACCESS_RES: ! 490: /* lwarx, ldarx or srwcx. */ ! 491: error_code = 0x04000000; ! 492: break; ! 493: case ACCESS_EXT: ! 494: /* eciwx or ecowx */ ! 495: error_code = 0x04100000; ! 496: break; ! 497: default: ! 498: printf("DSI: invalid exception (%d)\n", ret); ! 499: exception = EXCP_PROGRAM; ! 500: error_code = EXCP_INVAL | EXCP_INVAL_INVAL; ! 501: break; ! 502: } ! 503: break; ! 504: case -5: ! 505: /* No match in segment table */ ! 506: exception = EXCP_DSEG; ! 507: error_code = 0; ! 508: break; ! 509: } ! 510: if (exception == EXCP_DSI && rw == 1) ! 511: error_code |= 0x02000000; ! 512: /* Store fault address */ ! 513: env->spr[SPR_DAR] = address; ! 514: env->spr[SPR_DSISR] = error_code; ! 515: } ! 516: #if 0 ! 517: printf("%s: set exception to %d %02x\n", ! 518: __func__, exception, error_code); ! 519: #endif ! 520: env->exception_index = exception; ! 521: env->error_code = error_code; ! 522: ret = 1; ! 523: } ! 524: return ret; ! 525: } ! 526: ! 527: /*****************************************************************************/ ! 528: /* BATs management */ ! 529: #if !defined(FLUSH_ALL_TLBS) ! 530: static inline void do_invalidate_BAT (CPUPPCState *env, ! 531: target_ulong BATu, target_ulong mask) ! 532: { ! 533: target_ulong base, end, page; ! 534: base = BATu & ~0x0001FFFF; ! 535: end = base + mask + 0x00020000; ! 536: #if defined (DEBUG_BATS) ! 537: if (loglevel != 0) ! 538: fprintf(logfile, "Flush BAT from %08x to %08x (%08x)\n", base, end, mask); ! 539: #endif ! 540: for (page = base; page != end; page += TARGET_PAGE_SIZE) ! 541: tlb_flush_page(env, page); ! 542: #if defined (DEBUG_BATS) ! 543: if (loglevel != 0) ! 544: fprintf(logfile, "Flush done\n"); ! 545: #endif ! 546: } ! 547: #endif ! 548: ! 549: static inline void dump_store_bat (CPUPPCState *env, char ID, int ul, int nr, ! 550: target_ulong value) ! 551: { ! 552: #if defined (DEBUG_BATS) ! 553: if (loglevel != 0) { ! 554: fprintf(logfile, "Set %cBAT%d%c to 0x%08lx (0x%08lx)\n", ! 555: ID, nr, ul == 0 ? 'u' : 'l', (unsigned long)value, ! 556: (unsigned long)env->nip); ! 557: } ! 558: #endif ! 559: } ! 560: ! 561: target_ulong do_load_ibatu (CPUPPCState *env, int nr) ! 562: { ! 563: return env->IBAT[0][nr]; ! 564: } ! 565: ! 566: target_ulong do_load_ibatl (CPUPPCState *env, int nr) ! 567: { ! 568: return env->IBAT[1][nr]; ! 569: } ! 570: ! 571: void do_store_ibatu (CPUPPCState *env, int nr, target_ulong value) ! 572: { ! 573: target_ulong mask; ! 574: ! 575: dump_store_bat(env, 'I', 0, nr, value); ! 576: if (env->IBAT[0][nr] != value) { ! 577: mask = (value << 15) & 0x0FFE0000UL; ! 578: #if !defined(FLUSH_ALL_TLBS) ! 579: do_invalidate_BAT(env, env->IBAT[0][nr], mask); ! 580: #endif ! 581: /* When storing valid upper BAT, mask BEPI and BRPN ! 582: * and invalidate all TLBs covered by this BAT ! 583: */ ! 584: mask = (value << 15) & 0x0FFE0000UL; ! 585: env->IBAT[0][nr] = (value & 0x00001FFFUL) | ! 586: (value & ~0x0001FFFFUL & ~mask); ! 587: env->IBAT[1][nr] = (env->IBAT[1][nr] & 0x0000007B) | ! 588: (env->IBAT[1][nr] & ~0x0001FFFF & ~mask); ! 589: #if !defined(FLUSH_ALL_TLBS) ! 590: do_invalidate_BAT(env, env->IBAT[0][nr], mask); ! 591: #endif ! 592: #if defined(FLUSH_ALL_TLBS) ! 593: tlb_flush(env, 1); ! 594: #endif ! 595: } ! 596: } ! 597: ! 598: void do_store_ibatl (CPUPPCState *env, int nr, target_ulong value) ! 599: { ! 600: dump_store_bat(env, 'I', 1, nr, value); ! 601: env->IBAT[1][nr] = value; ! 602: } ! 603: ! 604: target_ulong do_load_dbatu (CPUPPCState *env, int nr) ! 605: { ! 606: return env->DBAT[0][nr]; ! 607: } ! 608: ! 609: target_ulong do_load_dbatl (CPUPPCState *env, int nr) ! 610: { ! 611: return env->DBAT[1][nr]; ! 612: } ! 613: ! 614: void do_store_dbatu (CPUPPCState *env, int nr, target_ulong value) ! 615: { ! 616: target_ulong mask; ! 617: ! 618: dump_store_bat(env, 'D', 0, nr, value); ! 619: if (env->DBAT[0][nr] != value) { ! 620: /* When storing valid upper BAT, mask BEPI and BRPN ! 621: * and invalidate all TLBs covered by this BAT ! 622: */ ! 623: mask = (value << 15) & 0x0FFE0000UL; ! 624: #if !defined(FLUSH_ALL_TLBS) ! 625: do_invalidate_BAT(env, env->DBAT[0][nr], mask); ! 626: #endif ! 627: mask = (value << 15) & 0x0FFE0000UL; ! 628: env->DBAT[0][nr] = (value & 0x00001FFFUL) | ! 629: (value & ~0x0001FFFFUL & ~mask); ! 630: env->DBAT[1][nr] = (env->DBAT[1][nr] & 0x0000007B) | ! 631: (env->DBAT[1][nr] & ~0x0001FFFF & ~mask); ! 632: #if !defined(FLUSH_ALL_TLBS) ! 633: do_invalidate_BAT(env, env->DBAT[0][nr], mask); ! 634: #else ! 635: tlb_flush(env, 1); ! 636: #endif ! 637: } ! 638: } ! 639: ! 640: void do_store_dbatl (CPUPPCState *env, int nr, target_ulong value) ! 641: { ! 642: dump_store_bat(env, 'D', 1, nr, value); ! 643: env->DBAT[1][nr] = value; ! 644: } ! 645: ! 646: static inline void invalidate_all_tlbs (CPUPPCState *env) ! 647: { ! 648: /* XXX: this needs to be completed for sotware driven TLB support */ ! 649: tlb_flush(env, 1); ! 650: } ! 651: ! 652: /*****************************************************************************/ ! 653: /* Special registers manipulation */ ! 654: target_ulong do_load_nip (CPUPPCState *env) ! 655: { ! 656: return env->nip; ! 657: } ! 658: ! 659: void do_store_nip (CPUPPCState *env, target_ulong value) ! 660: { ! 661: env->nip = value; ! 662: } ! 663: ! 664: target_ulong do_load_sdr1 (CPUPPCState *env) ! 665: { ! 666: return env->sdr1; ! 667: } ! 668: ! 669: void do_store_sdr1 (CPUPPCState *env, target_ulong value) ! 670: { ! 671: #if defined (DEBUG_MMU) ! 672: if (loglevel != 0) { ! 673: fprintf(logfile, "%s: 0x%08lx\n", __func__, (unsigned long)value); ! 674: } ! 675: #endif ! 676: if (env->sdr1 != value) { ! 677: env->sdr1 = value; ! 678: invalidate_all_tlbs(env); ! 679: } ! 680: } ! 681: ! 682: target_ulong do_load_sr (CPUPPCState *env, int srnum) ! 683: { ! 684: return env->sr[srnum]; ! 685: } ! 686: ! 687: void do_store_sr (CPUPPCState *env, int srnum, target_ulong value) ! 688: { ! 689: #if defined (DEBUG_MMU) ! 690: if (loglevel != 0) { ! 691: fprintf(logfile, "%s: reg=%d 0x%08lx %08lx\n", ! 692: __func__, srnum, (unsigned long)value, env->sr[srnum]); ! 693: } ! 694: #endif ! 695: if (env->sr[srnum] != value) { ! 696: env->sr[srnum] = value; ! 697: #if !defined(FLUSH_ALL_TLBS) && 0 ! 698: { ! 699: target_ulong page, end; ! 700: /* Invalidate 256 MB of virtual memory */ ! 701: page = (16 << 20) * srnum; ! 702: end = page + (16 << 20); ! 703: for (; page != end; page += TARGET_PAGE_SIZE) ! 704: tlb_flush_page(env, page); ! 705: } ! 706: #else ! 707: invalidate_all_tlbs(env); ! 708: #endif ! 709: } ! 710: } ! 711: ! 712: uint32_t do_load_cr (CPUPPCState *env) ! 713: { ! 714: return (env->crf[0] << 28) | ! 715: (env->crf[1] << 24) | ! 716: (env->crf[2] << 20) | ! 717: (env->crf[3] << 16) | ! 718: (env->crf[4] << 12) | ! 719: (env->crf[5] << 8) | ! 720: (env->crf[6] << 4) | ! 721: (env->crf[7] << 0); ! 722: } ! 723: ! 724: void do_store_cr (CPUPPCState *env, uint32_t value, uint32_t mask) ! 725: { ! 726: int i, sh; ! 727: ! 728: for (i = 0, sh = 7; i < 8; i++, sh --) { ! 729: if (mask & (1 << sh)) ! 730: env->crf[i] = (value >> (sh * 4)) & 0xFUL; ! 731: } ! 732: } ! 733: ! 734: uint32_t do_load_xer (CPUPPCState *env) ! 735: { ! 736: return (xer_so << XER_SO) | ! 737: (xer_ov << XER_OV) | ! 738: (xer_ca << XER_CA) | ! 739: (xer_bc << XER_BC) | ! 740: (xer_cmp << XER_CMP); ! 741: } ! 742: ! 743: void do_store_xer (CPUPPCState *env, uint32_t value) ! 744: { ! 745: xer_so = (value >> XER_SO) & 0x01; ! 746: xer_ov = (value >> XER_OV) & 0x01; ! 747: xer_ca = (value >> XER_CA) & 0x01; ! 748: xer_cmp = (value >> XER_CMP) & 0xFF; ! 749: xer_bc = (value >> XER_BC) & 0x3F; ! 750: } ! 751: ! 752: target_ulong do_load_msr (CPUPPCState *env) ! 753: { ! 754: return (msr_vr << MSR_VR) | ! 755: (msr_ap << MSR_AP) | ! 756: (msr_sa << MSR_SA) | ! 757: (msr_key << MSR_KEY) | ! 758: (msr_pow << MSR_POW) | ! 759: (msr_tlb << MSR_TLB) | ! 760: (msr_ile << MSR_ILE) | ! 761: (msr_ee << MSR_EE) | ! 762: (msr_pr << MSR_PR) | ! 763: (msr_fp << MSR_FP) | ! 764: (msr_me << MSR_ME) | ! 765: (msr_fe0 << MSR_FE0) | ! 766: (msr_se << MSR_SE) | ! 767: (msr_be << MSR_BE) | ! 768: (msr_fe1 << MSR_FE1) | ! 769: (msr_al << MSR_AL) | ! 770: (msr_ip << MSR_IP) | ! 771: (msr_ir << MSR_IR) | ! 772: (msr_dr << MSR_DR) | ! 773: (msr_pe << MSR_PE) | ! 774: (msr_px << MSR_PX) | ! 775: (msr_ri << MSR_RI) | ! 776: (msr_le << MSR_LE); ! 777: } ! 778: ! 779: void do_compute_hflags (CPUPPCState *env) ! 780: { ! 781: /* Compute current hflags */ ! 782: env->hflags = (msr_pr << MSR_PR) | (msr_le << MSR_LE) | ! 783: (msr_fp << MSR_FP) | (msr_fe0 << MSR_FE0) | (msr_fe1 << MSR_FE1) | ! 784: (msr_vr << MSR_VR) | (msr_ap << MSR_AP) | (msr_sa << MSR_SA) | ! 785: (msr_se << MSR_SE) | (msr_be << MSR_BE); ! 786: } ! 787: ! 788: void do_store_msr (CPUPPCState *env, target_ulong value) ! 789: { ! 790: value &= env->msr_mask; ! 791: if (((value >> MSR_IR) & 1) != msr_ir || ! 792: ((value >> MSR_DR) & 1) != msr_dr) { ! 793: /* Flush all tlb when changing translation mode ! 794: * When using software driven TLB, we may also need to reload ! 795: * all defined TLBs ! 796: */ ! 797: tlb_flush(env, 1); ! 798: env->interrupt_request |= CPU_INTERRUPT_EXITTB; ! 799: } ! 800: #if 0 ! 801: if (loglevel != 0) { ! 802: fprintf(logfile, "%s: T0 %08lx\n", __func__, value); ! 803: } ! 804: #endif ! 805: msr_vr = (value >> MSR_VR) & 1; ! 806: msr_ap = (value >> MSR_AP) & 1; ! 807: msr_sa = (value >> MSR_SA) & 1; ! 808: msr_key = (value >> MSR_KEY) & 1; ! 809: msr_pow = (value >> MSR_POW) & 1; ! 810: msr_tlb = (value >> MSR_TLB) & 1; ! 811: msr_ile = (value >> MSR_ILE) & 1; ! 812: msr_ee = (value >> MSR_EE) & 1; ! 813: msr_pr = (value >> MSR_PR) & 1; ! 814: msr_fp = (value >> MSR_FP) & 1; ! 815: msr_me = (value >> MSR_ME) & 1; ! 816: msr_fe0 = (value >> MSR_FE0) & 1; ! 817: msr_se = (value >> MSR_SE) & 1; ! 818: msr_be = (value >> MSR_BE) & 1; ! 819: msr_fe1 = (value >> MSR_FE1) & 1; ! 820: msr_al = (value >> MSR_AL) & 1; ! 821: msr_ip = (value >> MSR_IP) & 1; ! 822: msr_ir = (value >> MSR_IR) & 1; ! 823: msr_dr = (value >> MSR_DR) & 1; ! 824: msr_pe = (value >> MSR_PE) & 1; ! 825: msr_px = (value >> MSR_PX) & 1; ! 826: msr_ri = (value >> MSR_RI) & 1; ! 827: msr_le = (value >> MSR_LE) & 1; ! 828: do_compute_hflags(env); ! 829: } ! 830: ! 831: float64 do_load_fpscr (CPUPPCState *env) ! 832: { ! 833: /* The 32 MSB of the target fpr are undefined. ! 834: * They'll be zero... ! 835: */ ! 836: union { ! 837: float64 d; ! 838: struct { ! 839: uint32_t u[2]; ! 840: } s; ! 841: } u; ! 842: int i; ! 843: ! 844: #ifdef WORDS_BIGENDIAN ! 845: #define WORD0 0 ! 846: #define WORD1 1 ! 847: #else ! 848: #define WORD0 1 ! 849: #define WORD1 0 ! 850: #endif ! 851: u.s.u[WORD0] = 0; ! 852: u.s.u[WORD1] = 0; ! 853: for (i = 0; i < 8; i++) ! 854: u.s.u[WORD1] |= env->fpscr[i] << (4 * i); ! 855: return u.d; ! 856: } ! 857: ! 858: void do_store_fpscr (CPUPPCState *env, float64 f, uint32_t mask) ! 859: { ! 860: /* ! 861: * We use only the 32 LSB of the incoming fpr ! 862: */ ! 863: union { ! 864: double d; ! 865: struct { ! 866: uint32_t u[2]; ! 867: } s; ! 868: } u; ! 869: int i, rnd_type; ! 870: ! 871: u.d = f; ! 872: if (mask & 0x80) ! 873: env->fpscr[0] = (env->fpscr[0] & 0x9) | ((u.s.u[WORD1] >> 28) & ~0x9); ! 874: for (i = 1; i < 7; i++) { ! 875: if (mask & (1 << (7 - i))) ! 876: env->fpscr[i] = (u.s.u[WORD1] >> (4 * (7 - i))) & 0xF; ! 877: } ! 878: /* TODO: update FEX & VX */ ! 879: /* Set rounding mode */ ! 880: switch (env->fpscr[0] & 0x3) { ! 881: case 0: ! 882: /* Best approximation (round to nearest) */ ! 883: rnd_type = float_round_nearest_even; ! 884: break; ! 885: case 1: ! 886: /* Smaller magnitude (round toward zero) */ ! 887: rnd_type = float_round_to_zero; ! 888: break; ! 889: case 2: ! 890: /* Round toward +infinite */ ! 891: rnd_type = float_round_up; ! 892: break; ! 893: default: ! 894: case 3: ! 895: /* Round toward -infinite */ ! 896: rnd_type = float_round_down; ! 897: break; ! 898: } ! 899: set_float_rounding_mode(rnd_type, &env->fp_status); ! 900: } ! 901: ! 902: /*****************************************************************************/ ! 903: /* Exception processing */ ! 904: #if defined (CONFIG_USER_ONLY) ! 905: void do_interrupt (CPUState *env) ! 906: { ! 907: env->exception_index = -1; ! 908: } ! 909: #else ! 910: static void dump_syscall(CPUState *env) ! 911: { ! 912: fprintf(logfile, "syscall r0=0x%08x r3=0x%08x r4=0x%08x r5=0x%08x r6=0x%08x nip=0x%08x\n", ! 913: env->gpr[0], env->gpr[3], env->gpr[4], ! 914: env->gpr[5], env->gpr[6], env->nip); ! 915: } ! 916: ! 917: void do_interrupt (CPUState *env) ! 918: { ! 919: target_ulong msr, *srr_0, *srr_1, tmp; ! 920: int excp; ! 921: ! 922: excp = env->exception_index; ! 923: msr = do_load_msr(env); ! 924: /* The default is to use SRR0 & SRR1 to save the exception context */ ! 925: srr_0 = &env->spr[SPR_SRR0]; ! 926: srr_1 = &env->spr[SPR_SRR1]; ! 927: #if defined (DEBUG_EXCEPTIONS) ! 928: if ((excp == EXCP_PROGRAM || excp == EXCP_DSI) && msr_pr == 1) { ! 929: if (loglevel != 0) { ! 930: fprintf(logfile, "Raise exception at 0x%08lx => 0x%08x (%02x)\n", ! 931: (unsigned long)env->nip, excp, env->error_code); ! 932: cpu_dump_state(env, logfile, fprintf, 0); ! 933: } ! 934: } ! 935: #endif ! 936: if (loglevel & CPU_LOG_INT) { ! 937: fprintf(logfile, "Raise exception at 0x%08lx => 0x%08x (%02x)\n", ! 938: (unsigned long)env->nip, excp, env->error_code); ! 939: } ! 940: msr_pow = 0; ! 941: /* Generate informations in save/restore registers */ ! 942: switch (excp) { ! 943: /* Generic PowerPC exceptions */ ! 944: case EXCP_RESET: /* 0x0100 */ ! 945: if (PPC_EXCP(env) != PPC_FLAGS_EXCP_40x) { ! 946: if (msr_ip) ! 947: excp += 0xFFC00; ! 948: excp |= 0xFFC00000; ! 949: } else { ! 950: srr_0 = &env->spr[SPR_40x_SRR2]; ! 951: srr_1 = &env->spr[SPR_40x_SRR3]; ! 952: } ! 953: goto store_next; ! 954: case EXCP_MACHINE_CHECK: /* 0x0200 */ ! 955: if (msr_me == 0) { ! 956: cpu_abort(env, "Machine check exception while not allowed\n"); ! 957: } ! 958: if (PPC_EXCP(env) == PPC_FLAGS_EXCP_40x) { ! 959: srr_0 = &env->spr[SPR_40x_SRR2]; ! 960: srr_1 = &env->spr[SPR_40x_SRR3]; ! 961: } ! 962: msr_me = 0; ! 963: break; ! 964: case EXCP_DSI: /* 0x0300 */ ! 965: /* Store exception cause */ ! 966: /* data location address has been stored ! 967: * when the fault has been detected ! 968: */ ! 969: msr &= ~0xFFFF0000; ! 970: #if defined (DEBUG_EXCEPTIONS) ! 971: if (loglevel) { ! 972: fprintf(logfile, "DSI exception: DSISR=0x%08x, DAR=0x%08x\n", ! 973: env->spr[SPR_DSISR], env->spr[SPR_DAR]); ! 974: } else { ! 975: printf("DSI exception: DSISR=0x%08x, DAR=0x%08x\n", ! 976: env->spr[SPR_DSISR], env->spr[SPR_DAR]); ! 977: } ! 978: #endif ! 979: goto store_next; ! 980: case EXCP_ISI: /* 0x0400 */ ! 981: /* Store exception cause */ ! 982: msr &= ~0xFFFF0000; ! 983: msr |= env->error_code; ! 984: #if defined (DEBUG_EXCEPTIONS) ! 985: if (loglevel != 0) { ! 986: fprintf(logfile, "ISI exception: msr=0x%08x, nip=0x%08x\n", ! 987: msr, env->nip); ! 988: } ! 989: #endif ! 990: goto store_next; ! 991: case EXCP_EXTERNAL: /* 0x0500 */ ! 992: if (msr_ee == 0) { ! 993: #if defined (DEBUG_EXCEPTIONS) ! 994: if (loglevel > 0) { ! 995: fprintf(logfile, "Skipping hardware interrupt\n"); ! 996: } ! 997: #endif ! 998: /* Requeue it */ ! 999: env->interrupt_request |= CPU_INTERRUPT_HARD; ! 1000: return; ! 1001: } ! 1002: goto store_next; ! 1003: case EXCP_ALIGN: /* 0x0600 */ ! 1004: if (PPC_EXCP(env) != PPC_FLAGS_EXCP_601) { ! 1005: /* Store exception cause */ ! 1006: /* Get rS/rD and rA from faulting opcode */ ! 1007: env->spr[SPR_DSISR] |= ! 1008: (ldl_code((env->nip - 4)) & 0x03FF0000) >> 16; ! 1009: /* data location address has been stored ! 1010: * when the fault has been detected ! 1011: */ ! 1012: } else { ! 1013: /* IO error exception on PowerPC 601 */ ! 1014: /* XXX: TODO */ ! 1015: cpu_abort(env, ! 1016: "601 IO error exception is not implemented yet !\n"); ! 1017: } ! 1018: goto store_current; ! 1019: case EXCP_PROGRAM: /* 0x0700 */ ! 1020: msr &= ~0xFFFF0000; ! 1021: switch (env->error_code & ~0xF) { ! 1022: case EXCP_FP: ! 1023: if (msr_fe0 == 0 && msr_fe1 == 0) { ! 1024: #if defined (DEBUG_EXCEPTIONS) ! 1025: printf("Ignore floating point exception\n"); ! 1026: #endif ! 1027: return; ! 1028: } ! 1029: msr |= 0x00100000; ! 1030: /* Set FX */ ! 1031: env->fpscr[7] |= 0x8; ! 1032: /* Finally, update FEX */ ! 1033: if ((((env->fpscr[7] & 0x3) << 3) | (env->fpscr[6] >> 1)) & ! 1034: ((env->fpscr[1] << 1) | (env->fpscr[0] >> 3))) ! 1035: env->fpscr[7] |= 0x4; ! 1036: break; ! 1037: case EXCP_INVAL: ! 1038: // printf("Invalid instruction at 0x%08x\n", env->nip); ! 1039: msr |= 0x00080000; ! 1040: break; ! 1041: case EXCP_PRIV: ! 1042: msr |= 0x00040000; ! 1043: break; ! 1044: case EXCP_TRAP: ! 1045: msr |= 0x00020000; ! 1046: break; ! 1047: default: ! 1048: /* Should never occur */ ! 1049: break; ! 1050: } ! 1051: msr |= 0x00010000; ! 1052: goto store_current; ! 1053: case EXCP_NO_FP: /* 0x0800 */ ! 1054: msr &= ~0xFFFF0000; ! 1055: goto store_current; ! 1056: case EXCP_DECR: ! 1057: if (msr_ee == 0) { ! 1058: #if 1 ! 1059: /* Requeue it */ ! 1060: env->interrupt_request |= CPU_INTERRUPT_TIMER; ! 1061: #endif ! 1062: return; ! 1063: } ! 1064: goto store_next; ! 1065: case EXCP_SYSCALL: /* 0x0C00 */ ! 1066: /* NOTE: this is a temporary hack to support graphics OSI ! 1067: calls from the MOL driver */ ! 1068: if (env->gpr[3] == 0x113724fa && env->gpr[4] == 0x77810f9b && ! 1069: env->osi_call) { ! 1070: if (env->osi_call(env) != 0) ! 1071: return; ! 1072: } ! 1073: if (loglevel & CPU_LOG_INT) { ! 1074: dump_syscall(env); ! 1075: } ! 1076: goto store_next; ! 1077: case EXCP_TRACE: /* 0x0D00 */ ! 1078: /* XXX: TODO */ ! 1079: cpu_abort(env, "Trace exception is not implemented yet !\n"); ! 1080: goto store_next; ! 1081: case EXCP_PERF: /* 0x0F00 */ ! 1082: /* XXX: TODO */ ! 1083: cpu_abort(env, ! 1084: "Performance counter exception is not implemented yet !\n"); ! 1085: goto store_next; ! 1086: /* 32 bits PowerPC specific exceptions */ ! 1087: case EXCP_FP_ASSIST: /* 0x0E00 */ ! 1088: /* XXX: TODO */ ! 1089: cpu_abort(env, "Floating point assist exception " ! 1090: "is not implemented yet !\n"); ! 1091: goto store_next; ! 1092: /* 64 bits PowerPC exceptions */ ! 1093: case EXCP_DSEG: /* 0x0380 */ ! 1094: /* XXX: TODO */ ! 1095: cpu_abort(env, "Data segment exception is not implemented yet !\n"); ! 1096: goto store_next; ! 1097: case EXCP_ISEG: /* 0x0480 */ ! 1098: /* XXX: TODO */ ! 1099: cpu_abort(env, ! 1100: "Instruction segment exception is not implemented yet !\n"); ! 1101: goto store_next; ! 1102: case EXCP_HDECR: /* 0x0980 */ ! 1103: if (msr_ee == 0) { ! 1104: #if 1 ! 1105: /* Requeue it */ ! 1106: env->interrupt_request |= CPU_INTERRUPT_TIMER; ! 1107: #endif ! 1108: return; ! 1109: } ! 1110: cpu_abort(env, ! 1111: "Hypervisor decrementer exception is not implemented yet !\n"); ! 1112: goto store_next; ! 1113: /* Implementation specific exceptions */ ! 1114: case 0x0A00: ! 1115: if (PPC_EXCP(env) != PPC_FLAGS_EXCP_602) { ! 1116: /* Critical interrupt on G2 */ ! 1117: /* XXX: TODO */ ! 1118: cpu_abort(env, "G2 critical interrupt is not implemented yet !\n"); ! 1119: goto store_next; ! 1120: } else { ! 1121: cpu_abort(env, "Invalid exception 0x0A00 !\n"); ! 1122: } ! 1123: return; ! 1124: case 0x0F20: ! 1125: switch (PPC_EXCP(env)) { ! 1126: case PPC_FLAGS_EXCP_40x: ! 1127: /* APU unavailable on 405 */ ! 1128: /* XXX: TODO */ ! 1129: cpu_abort(env, ! 1130: "APU unavailable exception is not implemented yet !\n"); ! 1131: goto store_next; ! 1132: case PPC_FLAGS_EXCP_74xx: ! 1133: /* Altivec unavailable */ ! 1134: /* XXX: TODO */ ! 1135: cpu_abort(env, "Altivec unavailable exception " ! 1136: "is not implemented yet !\n"); ! 1137: goto store_next; ! 1138: default: ! 1139: cpu_abort(env, "Invalid exception 0x0F20 !\n"); ! 1140: break; ! 1141: } ! 1142: return; ! 1143: case 0x1000: ! 1144: switch (PPC_EXCP(env)) { ! 1145: case PPC_FLAGS_EXCP_40x: ! 1146: /* PIT on 4xx */ ! 1147: /* XXX: TODO */ ! 1148: cpu_abort(env, "40x PIT exception is not implemented yet !\n"); ! 1149: goto store_next; ! 1150: case PPC_FLAGS_EXCP_602: ! 1151: case PPC_FLAGS_EXCP_603: ! 1152: /* ITLBMISS on 602/603 */ ! 1153: msr &= ~0xF00F0000; ! 1154: msr_tgpr = 1; ! 1155: goto store_gprs; ! 1156: default: ! 1157: cpu_abort(env, "Invalid exception 0x1000 !\n"); ! 1158: break; ! 1159: } ! 1160: return; ! 1161: case 0x1010: ! 1162: switch (PPC_EXCP(env)) { ! 1163: case PPC_FLAGS_EXCP_40x: ! 1164: /* FIT on 4xx */ ! 1165: cpu_abort(env, "40x FIT exception is not implemented yet !\n"); ! 1166: /* XXX: TODO */ ! 1167: goto store_next; ! 1168: default: ! 1169: cpu_abort(env, "Invalid exception 0x1010 !\n"); ! 1170: break; ! 1171: } ! 1172: return; ! 1173: case 0x1020: ! 1174: switch (PPC_EXCP(env)) { ! 1175: case PPC_FLAGS_EXCP_40x: ! 1176: /* Watchdog on 4xx */ ! 1177: /* XXX: TODO */ ! 1178: cpu_abort(env, ! 1179: "40x watchdog exception is not implemented yet !\n"); ! 1180: goto store_next; ! 1181: default: ! 1182: cpu_abort(env, "Invalid exception 0x1020 !\n"); ! 1183: break; ! 1184: } ! 1185: return; ! 1186: case 0x1100: ! 1187: switch (PPC_EXCP(env)) { ! 1188: case PPC_FLAGS_EXCP_40x: ! 1189: /* DTLBMISS on 4xx */ ! 1190: /* XXX: TODO */ ! 1191: cpu_abort(env, ! 1192: "40x DTLBMISS exception is not implemented yet !\n"); ! 1193: goto store_next; ! 1194: case PPC_FLAGS_EXCP_602: ! 1195: case PPC_FLAGS_EXCP_603: ! 1196: /* DLTLBMISS on 602/603 */ ! 1197: msr &= ~0xF00F0000; ! 1198: msr_tgpr = 1; ! 1199: goto store_gprs; ! 1200: default: ! 1201: cpu_abort(env, "Invalid exception 0x1100 !\n"); ! 1202: break; ! 1203: } ! 1204: return; ! 1205: case 0x1200: ! 1206: switch (PPC_EXCP(env)) { ! 1207: case PPC_FLAGS_EXCP_40x: ! 1208: /* ITLBMISS on 4xx */ ! 1209: /* XXX: TODO */ ! 1210: cpu_abort(env, ! 1211: "40x ITLBMISS exception is not implemented yet !\n"); ! 1212: goto store_next; ! 1213: case PPC_FLAGS_EXCP_602: ! 1214: case PPC_FLAGS_EXCP_603: ! 1215: /* DSTLBMISS on 602/603 */ ! 1216: msr &= ~0xF00F0000; ! 1217: msr_tgpr = 1; ! 1218: store_gprs: ! 1219: #if defined (DEBUG_SOFTWARE_TLB) ! 1220: if (loglevel != 0) { ! 1221: fprintf(logfile, "6xx %sTLB miss: IM %08x DM %08x IC %08x " ! 1222: "DC %08x H1 %08x H2 %08x %08x\n", ! 1223: excp == 0x1000 ? "I" : excp == 0x1100 ? "DL" : "DS", ! 1224: env->spr[SPR_IMISS], env->spr[SPR_DMISS], ! 1225: env->spr[SPR_ICMP], env->spr[SPR_DCMP], ! 1226: env->spr[SPR_DHASH1], env->spr[SPR_DHASH2], ! 1227: env->error_code); ! 1228: } ! 1229: #endif ! 1230: /* Swap temporary saved registers with GPRs */ ! 1231: tmp = env->gpr[0]; ! 1232: env->gpr[0] = env->tgpr[0]; ! 1233: env->tgpr[0] = tmp; ! 1234: tmp = env->gpr[1]; ! 1235: env->gpr[1] = env->tgpr[1]; ! 1236: env->tgpr[1] = tmp; ! 1237: tmp = env->gpr[2]; ! 1238: env->gpr[2] = env->tgpr[2]; ! 1239: env->tgpr[2] = tmp; ! 1240: tmp = env->gpr[3]; ! 1241: env->gpr[3] = env->tgpr[3]; ! 1242: env->tgpr[3] = tmp; ! 1243: msr |= env->crf[0] << 28; ! 1244: msr |= env->error_code; /* key, D/I, S/L bits */ ! 1245: /* Set way using a LRU mechanism */ ! 1246: msr |= (env->last_way ^ 1) << 17; ! 1247: goto store_next; ! 1248: default: ! 1249: cpu_abort(env, "Invalid exception 0x1200 !\n"); ! 1250: break; ! 1251: } ! 1252: return; ! 1253: case 0x1300: ! 1254: switch (PPC_EXCP(env)) { ! 1255: case PPC_FLAGS_EXCP_601: ! 1256: case PPC_FLAGS_EXCP_602: ! 1257: case PPC_FLAGS_EXCP_603: ! 1258: case PPC_FLAGS_EXCP_604: ! 1259: case PPC_FLAGS_EXCP_7x0: ! 1260: case PPC_FLAGS_EXCP_7x5: ! 1261: /* IABR on 6xx/7xx */ ! 1262: /* XXX: TODO */ ! 1263: cpu_abort(env, "IABR exception is not implemented yet !\n"); ! 1264: goto store_next; ! 1265: default: ! 1266: cpu_abort(env, "Invalid exception 0x1300 !\n"); ! 1267: break; ! 1268: } ! 1269: return; ! 1270: case 0x1400: ! 1271: switch (PPC_EXCP(env)) { ! 1272: case PPC_FLAGS_EXCP_601: ! 1273: case PPC_FLAGS_EXCP_602: ! 1274: case PPC_FLAGS_EXCP_603: ! 1275: case PPC_FLAGS_EXCP_604: ! 1276: case PPC_FLAGS_EXCP_7x0: ! 1277: case PPC_FLAGS_EXCP_7x5: ! 1278: /* SMI on 6xx/7xx */ ! 1279: /* XXX: TODO */ ! 1280: cpu_abort(env, "SMI exception is not implemented yet !\n"); ! 1281: goto store_next; ! 1282: default: ! 1283: cpu_abort(env, "Invalid exception 0x1400 !\n"); ! 1284: break; ! 1285: } ! 1286: return; ! 1287: case 0x1500: ! 1288: switch (PPC_EXCP(env)) { ! 1289: case PPC_FLAGS_EXCP_602: ! 1290: /* Watchdog on 602 */ ! 1291: cpu_abort(env, ! 1292: "602 watchdog exception is not implemented yet !\n"); ! 1293: goto store_next; ! 1294: case PPC_FLAGS_EXCP_970: ! 1295: /* Soft patch exception on 970 */ ! 1296: /* XXX: TODO */ ! 1297: cpu_abort(env, ! 1298: "970 soft-patch exception is not implemented yet !\n"); ! 1299: goto store_next; ! 1300: case PPC_FLAGS_EXCP_74xx: ! 1301: /* VPU assist on 74xx */ ! 1302: /* XXX: TODO */ ! 1303: cpu_abort(env, "VPU assist exception is not implemented yet !\n"); ! 1304: goto store_next; ! 1305: default: ! 1306: cpu_abort(env, "Invalid exception 0x1500 !\n"); ! 1307: break; ! 1308: } ! 1309: return; ! 1310: case 0x1600: ! 1311: switch (PPC_EXCP(env)) { ! 1312: case PPC_FLAGS_EXCP_602: ! 1313: /* Emulation trap on 602 */ ! 1314: /* XXX: TODO */ ! 1315: cpu_abort(env, "602 emulation trap exception " ! 1316: "is not implemented yet !\n"); ! 1317: goto store_next; ! 1318: case PPC_FLAGS_EXCP_970: ! 1319: /* Maintenance exception on 970 */ ! 1320: /* XXX: TODO */ ! 1321: cpu_abort(env, ! 1322: "970 maintenance exception is not implemented yet !\n"); ! 1323: goto store_next; ! 1324: default: ! 1325: cpu_abort(env, "Invalid exception 0x1600 !\n"); ! 1326: break; ! 1327: } ! 1328: return; ! 1329: case 0x1700: ! 1330: switch (PPC_EXCP(env)) { ! 1331: case PPC_FLAGS_EXCP_7x0: ! 1332: case PPC_FLAGS_EXCP_7x5: ! 1333: /* Thermal management interrupt on G3 */ ! 1334: /* XXX: TODO */ ! 1335: cpu_abort(env, "G3 thermal management exception " ! 1336: "is not implemented yet !\n"); ! 1337: goto store_next; ! 1338: case PPC_FLAGS_EXCP_970: ! 1339: /* VPU assist on 970 */ ! 1340: /* XXX: TODO */ ! 1341: cpu_abort(env, ! 1342: "970 VPU assist exception is not implemented yet !\n"); ! 1343: goto store_next; ! 1344: default: ! 1345: cpu_abort(env, "Invalid exception 0x1700 !\n"); ! 1346: break; ! 1347: } ! 1348: return; ! 1349: case 0x1800: ! 1350: switch (PPC_EXCP(env)) { ! 1351: case PPC_FLAGS_EXCP_970: ! 1352: /* Thermal exception on 970 */ ! 1353: /* XXX: TODO */ ! 1354: cpu_abort(env, "970 thermal management exception " ! 1355: "is not implemented yet !\n"); ! 1356: goto store_next; ! 1357: default: ! 1358: cpu_abort(env, "Invalid exception 0x1800 !\n"); ! 1359: break; ! 1360: } ! 1361: return; ! 1362: case 0x2000: ! 1363: switch (PPC_EXCP(env)) { ! 1364: case PPC_FLAGS_EXCP_40x: ! 1365: /* DEBUG on 4xx */ ! 1366: /* XXX: TODO */ ! 1367: cpu_abort(env, "40x debug exception is not implemented yet !\n"); ! 1368: goto store_next; ! 1369: case PPC_FLAGS_EXCP_601: ! 1370: /* Run mode exception on 601 */ ! 1371: /* XXX: TODO */ ! 1372: cpu_abort(env, ! 1373: "601 run mode exception is not implemented yet !\n"); ! 1374: goto store_next; ! 1375: default: ! 1376: cpu_abort(env, "Invalid exception 0x1800 !\n"); ! 1377: break; ! 1378: } ! 1379: return; ! 1380: /* Other exceptions */ ! 1381: /* Qemu internal exceptions: ! 1382: * we should never come here with those values: abort execution ! 1383: */ ! 1384: default: ! 1385: cpu_abort(env, "Invalid exception: code %d (%04x)\n", excp, excp); ! 1386: return; ! 1387: store_current: ! 1388: /* save current instruction location */ ! 1389: *srr_0 = (env->nip - 4) & 0xFFFFFFFFULL; ! 1390: break; ! 1391: store_next: ! 1392: /* save next instruction location */ ! 1393: *srr_0 = env->nip & 0xFFFFFFFFULL; ! 1394: break; ! 1395: } ! 1396: /* Save msr */ ! 1397: *srr_1 = msr; ! 1398: /* If we disactivated any translation, flush TLBs */ ! 1399: if (msr_ir || msr_dr) { ! 1400: tlb_flush(env, 1); ! 1401: } ! 1402: /* reload MSR with correct bits */ ! 1403: msr_ee = 0; ! 1404: msr_pr = 0; ! 1405: msr_fp = 0; ! 1406: msr_fe0 = 0; ! 1407: msr_se = 0; ! 1408: msr_be = 0; ! 1409: msr_fe1 = 0; ! 1410: msr_ir = 0; ! 1411: msr_dr = 0; ! 1412: msr_ri = 0; ! 1413: msr_le = msr_ile; ! 1414: msr_sf = msr_isf; ! 1415: do_compute_hflags(env); ! 1416: /* Jump to handler */ ! 1417: env->nip = excp; ! 1418: env->exception_index = EXCP_NONE; ! 1419: #if 0 ! 1420: /* ensure that no TB jump will be modified as ! 1421: the program flow was changed */ ! 1422: #ifdef __sparc__ ! 1423: tmp_T0 = 0; ! 1424: #else ! 1425: T0 = 0; ! 1426: #endif ! 1427: #endif ! 1428: env->interrupt_request |= CPU_INTERRUPT_EXITTB; ! 1429: } ! 1430: #endif /* !CONFIG_USER_ONLY */
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