5 //#define DEBUG_UNALIGNED
6 //#define DEBUG_UNASSIGNED
8 void raise_exception(int tt)
10 env->exception_index = tt;
14 void check_ieee_exceptions()
16 T0 = get_float_exception_flags(&env->fp_status);
19 /* Copy IEEE 754 flags into FSR */
20 if (T0 & float_flag_invalid)
22 if (T0 & float_flag_overflow)
24 if (T0 & float_flag_underflow)
26 if (T0 & float_flag_divbyzero)
28 if (T0 & float_flag_inexact)
31 if ((env->fsr & FSR_CEXC_MASK) & ((env->fsr & FSR_TEM_MASK) >> 23))
33 /* Unmasked exception, generate a trap */
34 env->fsr |= FSR_FTT_IEEE_EXCP;
35 raise_exception(TT_FP_EXCP);
39 /* Accumulate exceptions */
40 env->fsr |= (env->fsr & FSR_CEXC_MASK) << 5;
45 #ifdef USE_INT_TO_FLOAT_HELPERS
48 set_float_exception_flags(0, &env->fp_status);
49 FT0 = int32_to_float32(*((int32_t *)&FT1), &env->fp_status);
50 check_ieee_exceptions();
55 DT0 = int32_to_float64(*((int32_t *)&FT1), &env->fp_status);
61 FT0 = float32_abs(FT1);
67 DT0 = float64_abs(DT1);
73 set_float_exception_flags(0, &env->fp_status);
74 FT0 = float32_sqrt(FT1, &env->fp_status);
75 check_ieee_exceptions();
80 set_float_exception_flags(0, &env->fp_status);
81 DT0 = float64_sqrt(DT1, &env->fp_status);
82 check_ieee_exceptions();
85 #define GEN_FCMP(name, size, reg1, reg2, FS, TRAP) \
86 void glue(do_, name) (void) \
88 env->fsr &= ~((FSR_FCC1 | FSR_FCC0) << FS); \
89 switch (glue(size, _compare) (reg1, reg2, &env->fp_status)) { \
90 case float_relation_unordered: \
91 T0 = (FSR_FCC1 | FSR_FCC0) << FS; \
92 if ((env->fsr & FSR_NVM) || TRAP) { \
94 env->fsr |= FSR_NVC; \
95 env->fsr |= FSR_FTT_IEEE_EXCP; \
96 raise_exception(TT_FP_EXCP); \
98 env->fsr |= FSR_NVA; \
101 case float_relation_less: \
102 T0 = FSR_FCC0 << FS; \
104 case float_relation_greater: \
105 T0 = FSR_FCC1 << FS; \
114 GEN_FCMP(fcmps, float32, FT0, FT1, 0, 0);
115 GEN_FCMP(fcmpd, float64, DT0, DT1, 0, 0);
117 GEN_FCMP(fcmpes, float32, FT0, FT1, 0, 1);
118 GEN_FCMP(fcmped, float64, DT0, DT1, 0, 1);
120 #ifdef TARGET_SPARC64
121 GEN_FCMP(fcmps_fcc1, float32, FT0, FT1, 22, 0);
122 GEN_FCMP(fcmpd_fcc1, float64, DT0, DT1, 22, 0);
124 GEN_FCMP(fcmps_fcc2, float32, FT0, FT1, 24, 0);
125 GEN_FCMP(fcmpd_fcc2, float64, DT0, DT1, 24, 0);
127 GEN_FCMP(fcmps_fcc3, float32, FT0, FT1, 26, 0);
128 GEN_FCMP(fcmpd_fcc3, float64, DT0, DT1, 26, 0);
130 GEN_FCMP(fcmpes_fcc1, float32, FT0, FT1, 22, 1);
131 GEN_FCMP(fcmped_fcc1, float64, DT0, DT1, 22, 1);
133 GEN_FCMP(fcmpes_fcc2, float32, FT0, FT1, 24, 1);
134 GEN_FCMP(fcmped_fcc2, float64, DT0, DT1, 24, 1);
136 GEN_FCMP(fcmpes_fcc3, float32, FT0, FT1, 26, 1);
137 GEN_FCMP(fcmped_fcc3, float64, DT0, DT1, 26, 1);
140 #if defined(CONFIG_USER_ONLY)
141 void helper_ld_asi(int asi, int size, int sign)
145 void helper_st_asi(int asi, int size, int sign)
149 #ifndef TARGET_SPARC64
150 void helper_ld_asi(int asi, int size, int sign)
155 case 2: /* SuperSparc MXCC registers */
157 case 3: /* MMU probe */
161 mmulev = (T0 >> 8) & 15;
165 ret = mmu_probe(env, T0, mmulev);
169 printf("mmu_probe: 0x%08x (lev %d) -> 0x%08x\n", T0, mmulev, ret);
173 case 4: /* read MMU regs */
175 int reg = (T0 >> 8) & 0xf;
177 ret = env->mmuregs[reg];
178 if (reg == 3) /* Fault status cleared on read */
179 env->mmuregs[reg] = 0;
181 printf("mmu_read: reg[%d] = 0x%08x\n", reg, ret);
185 case 9: /* Supervisor code access */
191 ret = lduw_code(T0 & ~1);
195 ret = ldl_code(T0 & ~3);
198 ret = ldl_code(T0 & ~3);
199 T0 = ldl_code((T0 + 4) & ~3);
203 case 0xc: /* I-cache tag */
204 case 0xd: /* I-cache data */
205 case 0xe: /* D-cache tag */
206 case 0xf: /* D-cache data */
208 case 0x20: /* MMU passthrough */
214 ret = lduw_phys(T0 & ~1);
218 ret = ldl_phys(T0 & ~3);
221 ret = ldl_phys(T0 & ~3);
222 T0 = ldl_phys((T0 + 4) & ~3);
226 case 0x21 ... 0x2f: /* MMU passthrough, unassigned */
228 do_unassigned_access(T0, 0, 0, 1);
235 void helper_st_asi(int asi, int size, int sign)
238 case 2: /* SuperSparc MXCC registers */
240 case 3: /* MMU flush */
244 mmulev = (T0 >> 8) & 15;
246 printf("mmu flush level %d\n", mmulev);
249 case 0: // flush page
250 tlb_flush_page(env, T0 & 0xfffff000);
252 case 1: // flush segment (256k)
253 case 2: // flush region (16M)
254 case 3: // flush context (4G)
255 case 4: // flush entire
266 case 4: /* write MMU regs */
268 int reg = (T0 >> 8) & 0xf;
271 oldreg = env->mmuregs[reg];
274 env->mmuregs[reg] &= ~(MMU_E | MMU_NF);
275 env->mmuregs[reg] |= T1 & (MMU_E | MMU_NF);
276 // Mappings generated during no-fault mode or MMU
277 // disabled mode are invalid in normal mode
278 if (oldreg != env->mmuregs[reg])
282 env->mmuregs[reg] = T1;
283 if (oldreg != env->mmuregs[reg]) {
284 /* we flush when the MMU context changes because
285 QEMU has no MMU context support */
293 env->mmuregs[reg] = T1;
297 if (oldreg != env->mmuregs[reg]) {
298 printf("mmu change reg[%d]: 0x%08x -> 0x%08x\n", reg, oldreg, env->mmuregs[reg]);
304 case 0xc: /* I-cache tag */
305 case 0xd: /* I-cache data */
306 case 0xe: /* D-cache tag */
307 case 0xf: /* D-cache data */
308 case 0x10: /* I/D-cache flush page */
309 case 0x11: /* I/D-cache flush segment */
310 case 0x12: /* I/D-cache flush region */
311 case 0x13: /* I/D-cache flush context */
312 case 0x14: /* I/D-cache flush user */
314 case 0x17: /* Block copy, sta access */
317 // address (T0) = dst
320 uint32_t src = T1 & ~3, dst = T0 & ~3, temp;
322 for (i = 0; i < 32; i += 4, src += 4, dst += 4) {
323 temp = ldl_kernel(src);
324 stl_kernel(dst, temp);
328 case 0x1f: /* Block fill, stda access */
331 // address (T0) = dst
334 uint32_t dst = T0 & 7;
337 val = (((uint64_t)T1) << 32) | T2;
339 for (i = 0; i < 32; i += 8, dst += 8)
340 stq_kernel(dst, val);
343 case 0x20: /* MMU passthrough */
350 stw_phys(T0 & ~1, T1);
354 stl_phys(T0 & ~3, T1);
357 stl_phys(T0 & ~3, T1);
358 stl_phys((T0 + 4) & ~3, T2);
363 case 0x31: /* Ross RT620 I-cache flush */
364 case 0x36: /* I-cache flash clear */
365 case 0x37: /* D-cache flash clear */
367 case 9: /* Supervisor code access, XXX */
368 case 0x21 ... 0x2f: /* MMU passthrough, unassigned */
370 do_unassigned_access(T0, 1, 0, 1);
377 void helper_ld_asi(int asi, int size, int sign)
381 if (asi < 0x80 && (env->pstate & PS_PRIV) == 0)
382 raise_exception(TT_PRIV_ACT);
386 case 0x15: // Bypass, non-cacheable
393 ret = lduw_phys(T0 & ~1);
396 ret = ldl_phys(T0 & ~3);
400 ret = ldq_phys(T0 & ~7);
405 case 0x04: // Nucleus
406 case 0x0c: // Nucleus Little Endian (LE)
407 case 0x10: // As if user primary
408 case 0x11: // As if user secondary
409 case 0x18: // As if user primary LE
410 case 0x19: // As if user secondary LE
411 case 0x1c: // Bypass LE
412 case 0x1d: // Bypass, non-cacheable LE
413 case 0x24: // Nucleus quad LDD 128 bit atomic
414 case 0x2c: // Nucleus quad LDD 128 bit atomic
415 case 0x4a: // UPA config
416 case 0x82: // Primary no-fault
417 case 0x83: // Secondary no-fault
418 case 0x88: // Primary LE
419 case 0x89: // Secondary LE
420 case 0x8a: // Primary no-fault LE
421 case 0x8b: // Secondary no-fault LE
427 case 0x50: // I-MMU regs
429 int reg = (T0 >> 3) & 0xf;
431 ret = env->immuregs[reg];
434 case 0x51: // I-MMU 8k TSB pointer
435 case 0x52: // I-MMU 64k TSB pointer
436 case 0x55: // I-MMU data access
439 case 0x56: // I-MMU tag read
443 for (i = 0; i < 64; i++) {
444 // Valid, ctx match, vaddr match
445 if ((env->itlb_tte[i] & 0x8000000000000000ULL) != 0 &&
446 env->itlb_tag[i] == T0) {
447 ret = env->itlb_tag[i];
453 case 0x58: // D-MMU regs
455 int reg = (T0 >> 3) & 0xf;
457 ret = env->dmmuregs[reg];
460 case 0x5e: // D-MMU tag read
464 for (i = 0; i < 64; i++) {
465 // Valid, ctx match, vaddr match
466 if ((env->dtlb_tte[i] & 0x8000000000000000ULL) != 0 &&
467 env->dtlb_tag[i] == T0) {
468 ret = env->dtlb_tag[i];
474 case 0x59: // D-MMU 8k TSB pointer
475 case 0x5a: // D-MMU 64k TSB pointer
476 case 0x5b: // D-MMU data pointer
477 case 0x5d: // D-MMU data access
478 case 0x48: // Interrupt dispatch, RO
479 case 0x49: // Interrupt data receive
480 case 0x7f: // Incoming interrupt vector, RO
483 case 0x54: // I-MMU data in, WO
484 case 0x57: // I-MMU demap, WO
485 case 0x5c: // D-MMU data in, WO
486 case 0x5f: // D-MMU demap, WO
487 case 0x77: // Interrupt vector, WO
489 do_unassigned_access(T0, 0, 0, 1);
496 void helper_st_asi(int asi, int size, int sign)
498 if (asi < 0x80 && (env->pstate & PS_PRIV) == 0)
499 raise_exception(TT_PRIV_ACT);
503 case 0x15: // Bypass, non-cacheable
510 stw_phys(T0 & ~1, T1);
513 stl_phys(T0 & ~3, T1);
517 stq_phys(T0 & ~7, T1);
522 case 0x04: // Nucleus
523 case 0x0c: // Nucleus Little Endian (LE)
524 case 0x10: // As if user primary
525 case 0x11: // As if user secondary
526 case 0x18: // As if user primary LE
527 case 0x19: // As if user secondary LE
528 case 0x1c: // Bypass LE
529 case 0x1d: // Bypass, non-cacheable LE
530 case 0x24: // Nucleus quad LDD 128 bit atomic
531 case 0x2c: // Nucleus quad LDD 128 bit atomic
532 case 0x4a: // UPA config
533 case 0x88: // Primary LE
534 case 0x89: // Secondary LE
542 env->lsu = T1 & (DMMU_E | IMMU_E);
543 // Mappings generated during D/I MMU disabled mode are
544 // invalid in normal mode
545 if (oldreg != env->lsu) {
547 printf("LSU change: 0x%" PRIx64 " -> 0x%" PRIx64 "\n", oldreg, env->lsu);
554 case 0x50: // I-MMU regs
556 int reg = (T0 >> 3) & 0xf;
559 oldreg = env->immuregs[reg];
564 case 1: // Not in I-MMU
571 T1 = 0; // Clear SFSR
573 case 5: // TSB access
574 case 6: // Tag access
578 env->immuregs[reg] = T1;
580 if (oldreg != env->immuregs[reg]) {
581 printf("mmu change reg[%d]: 0x%08" PRIx64 " -> 0x%08" PRIx64 "\n", reg, oldreg, env->immuregs[reg]);
587 case 0x54: // I-MMU data in
591 // Try finding an invalid entry
592 for (i = 0; i < 64; i++) {
593 if ((env->itlb_tte[i] & 0x8000000000000000ULL) == 0) {
594 env->itlb_tag[i] = env->immuregs[6];
595 env->itlb_tte[i] = T1;
599 // Try finding an unlocked entry
600 for (i = 0; i < 64; i++) {
601 if ((env->itlb_tte[i] & 0x40) == 0) {
602 env->itlb_tag[i] = env->immuregs[6];
603 env->itlb_tte[i] = T1;
610 case 0x55: // I-MMU data access
612 unsigned int i = (T0 >> 3) & 0x3f;
614 env->itlb_tag[i] = env->immuregs[6];
615 env->itlb_tte[i] = T1;
618 case 0x57: // I-MMU demap
621 case 0x58: // D-MMU regs
623 int reg = (T0 >> 3) & 0xf;
626 oldreg = env->dmmuregs[reg];
633 T1 = 0; // Clear SFSR, Fault address
634 env->dmmuregs[4] = 0;
636 env->dmmuregs[reg] = T1;
638 case 1: // Primary context
639 case 2: // Secondary context
640 case 5: // TSB access
641 case 6: // Tag access
642 case 7: // Virtual Watchpoint
643 case 8: // Physical Watchpoint
647 env->dmmuregs[reg] = T1;
649 if (oldreg != env->dmmuregs[reg]) {
650 printf("mmu change reg[%d]: 0x%08" PRIx64 " -> 0x%08" PRIx64 "\n", reg, oldreg, env->dmmuregs[reg]);
656 case 0x5c: // D-MMU data in
660 // Try finding an invalid entry
661 for (i = 0; i < 64; i++) {
662 if ((env->dtlb_tte[i] & 0x8000000000000000ULL) == 0) {
663 env->dtlb_tag[i] = env->dmmuregs[6];
664 env->dtlb_tte[i] = T1;
668 // Try finding an unlocked entry
669 for (i = 0; i < 64; i++) {
670 if ((env->dtlb_tte[i] & 0x40) == 0) {
671 env->dtlb_tag[i] = env->dmmuregs[6];
672 env->dtlb_tte[i] = T1;
679 case 0x5d: // D-MMU data access
681 unsigned int i = (T0 >> 3) & 0x3f;
683 env->dtlb_tag[i] = env->dmmuregs[6];
684 env->dtlb_tte[i] = T1;
687 case 0x5f: // D-MMU demap
688 case 0x49: // Interrupt data receive
691 case 0x51: // I-MMU 8k TSB pointer, RO
692 case 0x52: // I-MMU 64k TSB pointer, RO
693 case 0x56: // I-MMU tag read, RO
694 case 0x59: // D-MMU 8k TSB pointer, RO
695 case 0x5a: // D-MMU 64k TSB pointer, RO
696 case 0x5b: // D-MMU data pointer, RO
697 case 0x5e: // D-MMU tag read, RO
698 case 0x48: // Interrupt dispatch, RO
699 case 0x7f: // Incoming interrupt vector, RO
700 case 0x82: // Primary no-fault, RO
701 case 0x83: // Secondary no-fault, RO
702 case 0x8a: // Primary no-fault LE, RO
703 case 0x8b: // Secondary no-fault LE, RO
705 do_unassigned_access(T0, 1, 0, 1);
710 #endif /* !CONFIG_USER_ONLY */
712 #ifndef TARGET_SPARC64
718 raise_exception(TT_ILL_INSN);
721 cwp = (env->cwp + 1) & (NWINDOWS - 1);
722 if (env->wim & (1 << cwp)) {
723 raise_exception(TT_WIN_UNF);
726 env->psrs = env->psrps;
730 void helper_ldfsr(void)
733 switch (env->fsr & FSR_RD_MASK) {
735 rnd_mode = float_round_nearest_even;
739 rnd_mode = float_round_to_zero;
742 rnd_mode = float_round_up;
745 rnd_mode = float_round_down;
748 set_float_rounding_mode(rnd_mode, &env->fp_status);
753 env->exception_index = EXCP_DEBUG;
757 #ifndef TARGET_SPARC64
760 if ((T0 & PSR_CWP) >= NWINDOWS)
761 raise_exception(TT_ILL_INSN);
775 T0 = (T1 & 0x5555555555555555ULL) + ((T1 >> 1) & 0x5555555555555555ULL);
776 T0 = (T0 & 0x3333333333333333ULL) + ((T0 >> 2) & 0x3333333333333333ULL);
777 T0 = (T0 & 0x0f0f0f0f0f0f0f0fULL) + ((T0 >> 4) & 0x0f0f0f0f0f0f0f0fULL);
778 T0 = (T0 & 0x00ff00ff00ff00ffULL) + ((T0 >> 8) & 0x00ff00ff00ff00ffULL);
779 T0 = (T0 & 0x0000ffff0000ffffULL) + ((T0 >> 16) & 0x0000ffff0000ffffULL);
780 T0 = (T0 & 0x00000000ffffffffULL) + ((T0 >> 32) & 0x00000000ffffffffULL);
783 static inline uint64_t *get_gregset(uint64_t pstate)
800 uint64_t new_pstate, pstate_regs, new_pstate_regs;
803 new_pstate = T0 & 0xf3f;
804 pstate_regs = env->pstate & 0xc01;
805 new_pstate_regs = new_pstate & 0xc01;
806 if (new_pstate_regs != pstate_regs) {
807 // Switch global register bank
808 src = get_gregset(new_pstate_regs);
809 dst = get_gregset(pstate_regs);
810 memcpy32(dst, env->gregs);
811 memcpy32(env->gregs, src);
813 env->pstate = new_pstate;
819 env->pc = env->tnpc[env->tl];
820 env->npc = env->tnpc[env->tl] + 4;
821 PUT_CCR(env, env->tstate[env->tl] >> 32);
822 env->asi = (env->tstate[env->tl] >> 24) & 0xff;
823 env->pstate = (env->tstate[env->tl] >> 8) & 0xfff;
824 set_cwp(env->tstate[env->tl] & 0xff);
830 env->pc = env->tpc[env->tl];
831 env->npc = env->tnpc[env->tl];
832 PUT_CCR(env, env->tstate[env->tl] >> 32);
833 env->asi = (env->tstate[env->tl] >> 24) & 0xff;
834 env->pstate = (env->tstate[env->tl] >> 8) & 0xfff;
835 set_cwp(env->tstate[env->tl] & 0xff);
839 void set_cwp(int new_cwp)
841 /* put the modified wrap registers at their proper location */
842 if (env->cwp == (NWINDOWS - 1))
843 memcpy32(env->regbase, env->regbase + NWINDOWS * 16);
845 /* put the wrap registers at their temporary location */
846 if (new_cwp == (NWINDOWS - 1))
847 memcpy32(env->regbase + NWINDOWS * 16, env->regbase);
848 env->regwptr = env->regbase + (new_cwp * 16);
849 REGWPTR = env->regwptr;
852 void cpu_set_cwp(CPUState *env1, int new_cwp)
856 target_ulong *saved_regwptr;
861 saved_regwptr = REGWPTR;
867 REGWPTR = saved_regwptr;
871 #ifdef TARGET_SPARC64
872 void do_interrupt(int intno)
875 if (loglevel & CPU_LOG_INT) {
877 fprintf(logfile, "%6d: v=%04x pc=%016" PRIx64 " npc=%016" PRIx64 " SP=%016" PRIx64 "\n",
880 env->npc, env->regwptr[6]);
881 cpu_dump_state(env, logfile, fprintf, 0);
887 fprintf(logfile, " code=");
888 ptr = (uint8_t *)env->pc;
889 for(i = 0; i < 16; i++) {
890 fprintf(logfile, " %02x", ldub(ptr + i));
892 fprintf(logfile, "\n");
898 #if !defined(CONFIG_USER_ONLY)
899 if (env->tl == MAXTL) {
900 cpu_abort(env, "Trap 0x%04x while trap level is MAXTL, Error state", env->exception_index);
904 env->tstate[env->tl] = ((uint64_t)GET_CCR(env) << 32) | ((env->asi & 0xff) << 24) |
905 ((env->pstate & 0xfff) << 8) | (env->cwp & 0xff);
906 env->tpc[env->tl] = env->pc;
907 env->tnpc[env->tl] = env->npc;
908 env->tt[env->tl] = intno;
909 env->pstate = PS_PEF | PS_PRIV | PS_AG;
910 env->tbr &= ~0x7fffULL;
911 env->tbr |= ((env->tl > 1) ? 1 << 14 : 0) | (intno << 5);
912 if (env->tl < MAXTL - 1) {
915 env->pstate |= PS_RED;
916 if (env->tl != MAXTL)
920 env->npc = env->pc + 4;
921 env->exception_index = 0;
924 void do_interrupt(int intno)
929 if (loglevel & CPU_LOG_INT) {
931 fprintf(logfile, "%6d: v=%02x pc=%08x npc=%08x SP=%08x\n",
934 env->npc, env->regwptr[6]);
935 cpu_dump_state(env, logfile, fprintf, 0);
941 fprintf(logfile, " code=");
942 ptr = (uint8_t *)env->pc;
943 for(i = 0; i < 16; i++) {
944 fprintf(logfile, " %02x", ldub(ptr + i));
946 fprintf(logfile, "\n");
952 #if !defined(CONFIG_USER_ONLY)
953 if (env->psret == 0) {
954 cpu_abort(env, "Trap 0x%02x while interrupts disabled, Error state", env->exception_index);
959 cwp = (env->cwp - 1) & (NWINDOWS - 1);
961 env->regwptr[9] = env->pc;
962 env->regwptr[10] = env->npc;
963 env->psrps = env->psrs;
965 env->tbr = (env->tbr & TBR_BASE_MASK) | (intno << 4);
967 env->npc = env->pc + 4;
968 env->exception_index = 0;
972 #if !defined(CONFIG_USER_ONLY)
974 static void do_unaligned_access(target_ulong addr, int is_write, int is_user,
977 #define MMUSUFFIX _mmu
979 #define GETPC() (__builtin_return_address(0))
982 #include "softmmu_template.h"
985 #include "softmmu_template.h"
988 #include "softmmu_template.h"
991 #include "softmmu_template.h"
993 static void do_unaligned_access(target_ulong addr, int is_write, int is_user,
996 #ifdef DEBUG_UNALIGNED
997 printf("Unaligned access to 0x%x from 0x%x\n", addr, env->pc);
999 raise_exception(TT_UNALIGNED);
1002 /* try to fill the TLB and return an exception if error. If retaddr is
1003 NULL, it means that the function was called in C code (i.e. not
1004 from generated code or from helper.c) */
1005 /* XXX: fix it to restore all registers */
1006 void tlb_fill(target_ulong addr, int is_write, int is_user, void *retaddr)
1008 TranslationBlock *tb;
1011 CPUState *saved_env;
1013 /* XXX: hack to restore env in all cases, even if not called from
1016 env = cpu_single_env;
1018 ret = cpu_sparc_handle_mmu_fault(env, addr, is_write, is_user, 1);
1021 /* now we have a real cpu fault */
1022 pc = (unsigned long)retaddr;
1023 tb = tb_find_pc(pc);
1025 /* the PC is inside the translated code. It means that we have
1026 a virtual CPU fault */
1027 cpu_restore_state(tb, env, pc, (void *)T2);
1037 #ifndef TARGET_SPARC64
1038 void do_unassigned_access(target_ulong addr, int is_write, int is_exec,
1041 CPUState *saved_env;
1043 /* XXX: hack to restore env in all cases, even if not called from
1046 env = cpu_single_env;
1047 if (env->mmuregs[3]) /* Fault status register */
1048 env->mmuregs[3] = 1; /* overflow (not read before another fault) */
1050 env->mmuregs[3] |= 1 << 16;
1052 env->mmuregs[3] |= 1 << 5;
1054 env->mmuregs[3] |= 1 << 6;
1056 env->mmuregs[3] |= 1 << 7;
1057 env->mmuregs[3] |= (5 << 2) | 2;
1058 env->mmuregs[4] = addr; /* Fault address register */
1059 if ((env->mmuregs[0] & MMU_E) && !(env->mmuregs[0] & MMU_NF)) {
1060 #ifdef DEBUG_UNASSIGNED
1061 printf("Unassigned mem access to " TARGET_FMT_lx " from " TARGET_FMT_lx
1062 "\n", addr, env->pc);
1064 raise_exception(TT_DATA_ACCESS);
1069 void do_unassigned_access(target_ulong addr, int is_write, int is_exec,
1072 #ifdef DEBUG_UNASSIGNED
1073 CPUState *saved_env;
1075 /* XXX: hack to restore env in all cases, even if not called from
1078 env = cpu_single_env;
1079 printf("Unassigned mem access to " TARGET_FMT_lx " from " TARGET_FMT_lx "\n",
1083 raise_exception(TT_DATA_ACCESS);