2 * i386 helpers (without register variable usage)
4 * Copyright (c) 2003 Fabrice Bellard
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.
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.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, see <http://www.gnu.org/licenses/>.
22 #ifndef CONFIG_USER_ONLY
29 /* NOTE: must be called outside the CPU execute loop */
30 void cpu_state_reset(CPUX86State *env)
32 cpu_reset(ENV_GET_CPU(env));
35 static void cpu_x86_version(CPUX86State *env, int *family, int *model)
37 int cpuver = env->cpuid_version;
39 if (family == NULL || model == NULL) {
43 *family = (cpuver >> 8) & 0x0f;
44 *model = ((cpuver >> 12) & 0xf0) + ((cpuver >> 4) & 0x0f);
47 /* Broadcast MCA signal for processor version 06H_EH and above */
48 int cpu_x86_support_mca_broadcast(CPUX86State *env)
53 cpu_x86_version(env, &family, &model);
54 if ((family == 6 && model >= 14) || family > 6) {
61 /***********************************************************/
64 static const char *cc_op_str[] = {
120 cpu_x86_dump_seg_cache(CPUX86State *env, FILE *f, fprintf_function cpu_fprintf,
121 const char *name, struct SegmentCache *sc)
124 if (env->hflags & HF_CS64_MASK) {
125 cpu_fprintf(f, "%-3s=%04x %016" PRIx64 " %08x %08x", name,
126 sc->selector, sc->base, sc->limit, sc->flags & 0x00ffff00);
130 cpu_fprintf(f, "%-3s=%04x %08x %08x %08x", name, sc->selector,
131 (uint32_t)sc->base, sc->limit, sc->flags & 0x00ffff00);
134 if (!(env->hflags & HF_PE_MASK) || !(sc->flags & DESC_P_MASK))
137 cpu_fprintf(f, " DPL=%d ", (sc->flags & DESC_DPL_MASK) >> DESC_DPL_SHIFT);
138 if (sc->flags & DESC_S_MASK) {
139 if (sc->flags & DESC_CS_MASK) {
140 cpu_fprintf(f, (sc->flags & DESC_L_MASK) ? "CS64" :
141 ((sc->flags & DESC_B_MASK) ? "CS32" : "CS16"));
142 cpu_fprintf(f, " [%c%c", (sc->flags & DESC_C_MASK) ? 'C' : '-',
143 (sc->flags & DESC_R_MASK) ? 'R' : '-');
145 cpu_fprintf(f, (sc->flags & DESC_B_MASK) ? "DS " : "DS16");
146 cpu_fprintf(f, " [%c%c", (sc->flags & DESC_E_MASK) ? 'E' : '-',
147 (sc->flags & DESC_W_MASK) ? 'W' : '-');
149 cpu_fprintf(f, "%c]", (sc->flags & DESC_A_MASK) ? 'A' : '-');
151 static const char *sys_type_name[2][16] = {
153 "Reserved", "TSS16-avl", "LDT", "TSS16-busy",
154 "CallGate16", "TaskGate", "IntGate16", "TrapGate16",
155 "Reserved", "TSS32-avl", "Reserved", "TSS32-busy",
156 "CallGate32", "Reserved", "IntGate32", "TrapGate32"
159 "<hiword>", "Reserved", "LDT", "Reserved", "Reserved",
160 "Reserved", "Reserved", "Reserved", "Reserved",
161 "TSS64-avl", "Reserved", "TSS64-busy", "CallGate64",
162 "Reserved", "IntGate64", "TrapGate64"
166 sys_type_name[(env->hflags & HF_LMA_MASK) ? 1 : 0]
167 [(sc->flags & DESC_TYPE_MASK)
168 >> DESC_TYPE_SHIFT]);
171 cpu_fprintf(f, "\n");
174 #define DUMP_CODE_BYTES_TOTAL 50
175 #define DUMP_CODE_BYTES_BACKWARD 20
177 void cpu_dump_state(CPUX86State *env, FILE *f, fprintf_function cpu_fprintf,
182 static const char *seg_name[6] = { "ES", "CS", "SS", "DS", "FS", "GS" };
184 cpu_synchronize_state(env);
186 eflags = env->eflags;
188 if (env->hflags & HF_CS64_MASK) {
190 "RAX=%016" PRIx64 " RBX=%016" PRIx64 " RCX=%016" PRIx64 " RDX=%016" PRIx64 "\n"
191 "RSI=%016" PRIx64 " RDI=%016" PRIx64 " RBP=%016" PRIx64 " RSP=%016" PRIx64 "\n"
192 "R8 =%016" PRIx64 " R9 =%016" PRIx64 " R10=%016" PRIx64 " R11=%016" PRIx64 "\n"
193 "R12=%016" PRIx64 " R13=%016" PRIx64 " R14=%016" PRIx64 " R15=%016" PRIx64 "\n"
194 "RIP=%016" PRIx64 " RFL=%08x [%c%c%c%c%c%c%c] CPL=%d II=%d A20=%d SMM=%d HLT=%d\n",
212 eflags & DF_MASK ? 'D' : '-',
213 eflags & CC_O ? 'O' : '-',
214 eflags & CC_S ? 'S' : '-',
215 eflags & CC_Z ? 'Z' : '-',
216 eflags & CC_A ? 'A' : '-',
217 eflags & CC_P ? 'P' : '-',
218 eflags & CC_C ? 'C' : '-',
219 env->hflags & HF_CPL_MASK,
220 (env->hflags >> HF_INHIBIT_IRQ_SHIFT) & 1,
221 (env->a20_mask >> 20) & 1,
222 (env->hflags >> HF_SMM_SHIFT) & 1,
227 cpu_fprintf(f, "EAX=%08x EBX=%08x ECX=%08x EDX=%08x\n"
228 "ESI=%08x EDI=%08x EBP=%08x ESP=%08x\n"
229 "EIP=%08x EFL=%08x [%c%c%c%c%c%c%c] CPL=%d II=%d A20=%d SMM=%d HLT=%d\n",
230 (uint32_t)env->regs[R_EAX],
231 (uint32_t)env->regs[R_EBX],
232 (uint32_t)env->regs[R_ECX],
233 (uint32_t)env->regs[R_EDX],
234 (uint32_t)env->regs[R_ESI],
235 (uint32_t)env->regs[R_EDI],
236 (uint32_t)env->regs[R_EBP],
237 (uint32_t)env->regs[R_ESP],
238 (uint32_t)env->eip, eflags,
239 eflags & DF_MASK ? 'D' : '-',
240 eflags & CC_O ? 'O' : '-',
241 eflags & CC_S ? 'S' : '-',
242 eflags & CC_Z ? 'Z' : '-',
243 eflags & CC_A ? 'A' : '-',
244 eflags & CC_P ? 'P' : '-',
245 eflags & CC_C ? 'C' : '-',
246 env->hflags & HF_CPL_MASK,
247 (env->hflags >> HF_INHIBIT_IRQ_SHIFT) & 1,
248 (env->a20_mask >> 20) & 1,
249 (env->hflags >> HF_SMM_SHIFT) & 1,
253 for(i = 0; i < 6; i++) {
254 cpu_x86_dump_seg_cache(env, f, cpu_fprintf, seg_name[i],
257 cpu_x86_dump_seg_cache(env, f, cpu_fprintf, "LDT", &env->ldt);
258 cpu_x86_dump_seg_cache(env, f, cpu_fprintf, "TR", &env->tr);
261 if (env->hflags & HF_LMA_MASK) {
262 cpu_fprintf(f, "GDT= %016" PRIx64 " %08x\n",
263 env->gdt.base, env->gdt.limit);
264 cpu_fprintf(f, "IDT= %016" PRIx64 " %08x\n",
265 env->idt.base, env->idt.limit);
266 cpu_fprintf(f, "CR0=%08x CR2=%016" PRIx64 " CR3=%016" PRIx64 " CR4=%08x\n",
267 (uint32_t)env->cr[0],
270 (uint32_t)env->cr[4]);
271 for(i = 0; i < 4; i++)
272 cpu_fprintf(f, "DR%d=%016" PRIx64 " ", i, env->dr[i]);
273 cpu_fprintf(f, "\nDR6=%016" PRIx64 " DR7=%016" PRIx64 "\n",
274 env->dr[6], env->dr[7]);
278 cpu_fprintf(f, "GDT= %08x %08x\n",
279 (uint32_t)env->gdt.base, env->gdt.limit);
280 cpu_fprintf(f, "IDT= %08x %08x\n",
281 (uint32_t)env->idt.base, env->idt.limit);
282 cpu_fprintf(f, "CR0=%08x CR2=%08x CR3=%08x CR4=%08x\n",
283 (uint32_t)env->cr[0],
284 (uint32_t)env->cr[2],
285 (uint32_t)env->cr[3],
286 (uint32_t)env->cr[4]);
287 for(i = 0; i < 4; i++) {
288 cpu_fprintf(f, "DR%d=" TARGET_FMT_lx " ", i, env->dr[i]);
290 cpu_fprintf(f, "\nDR6=" TARGET_FMT_lx " DR7=" TARGET_FMT_lx "\n",
291 env->dr[6], env->dr[7]);
293 if (flags & X86_DUMP_CCOP) {
294 if ((unsigned)env->cc_op < CC_OP_NB)
295 snprintf(cc_op_name, sizeof(cc_op_name), "%s", cc_op_str[env->cc_op]);
297 snprintf(cc_op_name, sizeof(cc_op_name), "[%d]", env->cc_op);
299 if (env->hflags & HF_CS64_MASK) {
300 cpu_fprintf(f, "CCS=%016" PRIx64 " CCD=%016" PRIx64 " CCO=%-8s\n",
301 env->cc_src, env->cc_dst,
306 cpu_fprintf(f, "CCS=%08x CCD=%08x CCO=%-8s\n",
307 (uint32_t)env->cc_src, (uint32_t)env->cc_dst,
311 cpu_fprintf(f, "EFER=%016" PRIx64 "\n", env->efer);
312 if (flags & X86_DUMP_FPU) {
315 for(i = 0; i < 8; i++) {
316 fptag |= ((!env->fptags[i]) << i);
318 cpu_fprintf(f, "FCW=%04x FSW=%04x [ST=%d] FTW=%02x MXCSR=%08x\n",
320 (env->fpus & ~0x3800) | (env->fpstt & 0x7) << 11,
326 u.d = env->fpregs[i].d;
327 cpu_fprintf(f, "FPR%d=%016" PRIx64 " %04x",
328 i, u.l.lower, u.l.upper);
330 cpu_fprintf(f, "\n");
334 if (env->hflags & HF_CS64_MASK)
339 cpu_fprintf(f, "XMM%02d=%08x%08x%08x%08x",
341 env->xmm_regs[i].XMM_L(3),
342 env->xmm_regs[i].XMM_L(2),
343 env->xmm_regs[i].XMM_L(1),
344 env->xmm_regs[i].XMM_L(0));
346 cpu_fprintf(f, "\n");
351 if (flags & CPU_DUMP_CODE) {
352 target_ulong base = env->segs[R_CS].base + env->eip;
353 target_ulong offs = MIN(env->eip, DUMP_CODE_BYTES_BACKWARD);
357 cpu_fprintf(f, "Code=");
358 for (i = 0; i < DUMP_CODE_BYTES_TOTAL; i++) {
359 if (cpu_memory_rw_debug(env, base - offs + i, &code, 1, 0) == 0) {
360 snprintf(codestr, sizeof(codestr), "%02x", code);
362 snprintf(codestr, sizeof(codestr), "??");
364 cpu_fprintf(f, "%s%s%s%s", i > 0 ? " " : "",
365 i == offs ? "<" : "", codestr, i == offs ? ">" : "");
367 cpu_fprintf(f, "\n");
371 /***********************************************************/
373 /* XXX: add PGE support */
375 void cpu_x86_set_a20(CPUX86State *env, int a20_state)
377 a20_state = (a20_state != 0);
378 if (a20_state != ((env->a20_mask >> 20) & 1)) {
379 #if defined(DEBUG_MMU)
380 printf("A20 update: a20=%d\n", a20_state);
382 /* if the cpu is currently executing code, we must unlink it and
383 all the potentially executing TB */
384 cpu_interrupt(env, CPU_INTERRUPT_EXITTB);
386 /* when a20 is changed, all the MMU mappings are invalid, so
387 we must flush everything */
389 env->a20_mask = ~(1 << 20) | (a20_state << 20);
393 void cpu_x86_update_cr0(CPUX86State *env, uint32_t new_cr0)
397 #if defined(DEBUG_MMU)
398 printf("CR0 update: CR0=0x%08x\n", new_cr0);
400 if ((new_cr0 & (CR0_PG_MASK | CR0_WP_MASK | CR0_PE_MASK)) !=
401 (env->cr[0] & (CR0_PG_MASK | CR0_WP_MASK | CR0_PE_MASK))) {
406 if (!(env->cr[0] & CR0_PG_MASK) && (new_cr0 & CR0_PG_MASK) &&
407 (env->efer & MSR_EFER_LME)) {
408 /* enter in long mode */
409 /* XXX: generate an exception */
410 if (!(env->cr[4] & CR4_PAE_MASK))
412 env->efer |= MSR_EFER_LMA;
413 env->hflags |= HF_LMA_MASK;
414 } else if ((env->cr[0] & CR0_PG_MASK) && !(new_cr0 & CR0_PG_MASK) &&
415 (env->efer & MSR_EFER_LMA)) {
417 env->efer &= ~MSR_EFER_LMA;
418 env->hflags &= ~(HF_LMA_MASK | HF_CS64_MASK);
419 env->eip &= 0xffffffff;
422 env->cr[0] = new_cr0 | CR0_ET_MASK;
424 /* update PE flag in hidden flags */
425 pe_state = (env->cr[0] & CR0_PE_MASK);
426 env->hflags = (env->hflags & ~HF_PE_MASK) | (pe_state << HF_PE_SHIFT);
427 /* ensure that ADDSEG is always set in real mode */
428 env->hflags |= ((pe_state ^ 1) << HF_ADDSEG_SHIFT);
429 /* update FPU flags */
430 env->hflags = (env->hflags & ~(HF_MP_MASK | HF_EM_MASK | HF_TS_MASK)) |
431 ((new_cr0 << (HF_MP_SHIFT - 1)) & (HF_MP_MASK | HF_EM_MASK | HF_TS_MASK));
434 /* XXX: in legacy PAE mode, generate a GPF if reserved bits are set in
436 void cpu_x86_update_cr3(CPUX86State *env, target_ulong new_cr3)
438 env->cr[3] = new_cr3;
439 if (env->cr[0] & CR0_PG_MASK) {
440 #if defined(DEBUG_MMU)
441 printf("CR3 update: CR3=" TARGET_FMT_lx "\n", new_cr3);
447 void cpu_x86_update_cr4(CPUX86State *env, uint32_t new_cr4)
449 #if defined(DEBUG_MMU)
450 printf("CR4 update: CR4=%08x\n", (uint32_t)env->cr[4]);
452 if ((new_cr4 & (CR4_PGE_MASK | CR4_PAE_MASK | CR4_PSE_MASK)) !=
453 (env->cr[4] & (CR4_PGE_MASK | CR4_PAE_MASK | CR4_PSE_MASK))) {
457 if (!(env->cpuid_features & CPUID_SSE))
458 new_cr4 &= ~CR4_OSFXSR_MASK;
459 if (new_cr4 & CR4_OSFXSR_MASK)
460 env->hflags |= HF_OSFXSR_MASK;
462 env->hflags &= ~HF_OSFXSR_MASK;
464 env->cr[4] = new_cr4;
467 #if defined(CONFIG_USER_ONLY)
469 int cpu_x86_handle_mmu_fault(CPUX86State *env, target_ulong addr,
470 int is_write, int mmu_idx)
472 /* user mode only emulation */
475 env->error_code = (is_write << PG_ERROR_W_BIT);
476 env->error_code |= PG_ERROR_U_MASK;
477 env->exception_index = EXCP0E_PAGE;
483 /* XXX: This value should match the one returned by CPUID
485 # if defined(TARGET_X86_64)
486 # define PHYS_ADDR_MASK 0xfffffff000LL
488 # define PHYS_ADDR_MASK 0xffffff000LL
492 -1 = cannot handle fault
493 0 = nothing more to do
494 1 = generate PF fault
496 int cpu_x86_handle_mmu_fault(CPUX86State *env, target_ulong addr,
497 int is_write1, int mmu_idx)
500 target_ulong pde_addr, pte_addr;
501 int error_code, is_dirty, prot, page_size, is_write, is_user;
502 target_phys_addr_t paddr;
503 uint32_t page_offset;
504 target_ulong vaddr, virt_addr;
506 is_user = mmu_idx == MMU_USER_IDX;
507 #if defined(DEBUG_MMU)
508 printf("MMU fault: addr=" TARGET_FMT_lx " w=%d u=%d eip=" TARGET_FMT_lx "\n",
509 addr, is_write1, is_user, env->eip);
511 is_write = is_write1 & 1;
513 if (!(env->cr[0] & CR0_PG_MASK)) {
515 virt_addr = addr & TARGET_PAGE_MASK;
516 prot = PAGE_READ | PAGE_WRITE | PAGE_EXEC;
521 if (env->cr[4] & CR4_PAE_MASK) {
523 target_ulong pdpe_addr;
526 if (env->hflags & HF_LMA_MASK) {
527 uint64_t pml4e_addr, pml4e;
530 /* test virtual address sign extension */
531 sext = (int64_t)addr >> 47;
532 if (sext != 0 && sext != -1) {
534 env->exception_index = EXCP0D_GPF;
538 pml4e_addr = ((env->cr[3] & ~0xfff) + (((addr >> 39) & 0x1ff) << 3)) &
540 pml4e = ldq_phys(pml4e_addr);
541 if (!(pml4e & PG_PRESENT_MASK)) {
545 if (!(env->efer & MSR_EFER_NXE) && (pml4e & PG_NX_MASK)) {
546 error_code = PG_ERROR_RSVD_MASK;
549 if (!(pml4e & PG_ACCESSED_MASK)) {
550 pml4e |= PG_ACCESSED_MASK;
551 stl_phys_notdirty(pml4e_addr, pml4e);
553 ptep = pml4e ^ PG_NX_MASK;
554 pdpe_addr = ((pml4e & PHYS_ADDR_MASK) + (((addr >> 30) & 0x1ff) << 3)) &
556 pdpe = ldq_phys(pdpe_addr);
557 if (!(pdpe & PG_PRESENT_MASK)) {
561 if (!(env->efer & MSR_EFER_NXE) && (pdpe & PG_NX_MASK)) {
562 error_code = PG_ERROR_RSVD_MASK;
565 ptep &= pdpe ^ PG_NX_MASK;
566 if (!(pdpe & PG_ACCESSED_MASK)) {
567 pdpe |= PG_ACCESSED_MASK;
568 stl_phys_notdirty(pdpe_addr, pdpe);
573 /* XXX: load them when cr3 is loaded ? */
574 pdpe_addr = ((env->cr[3] & ~0x1f) + ((addr >> 27) & 0x18)) &
576 pdpe = ldq_phys(pdpe_addr);
577 if (!(pdpe & PG_PRESENT_MASK)) {
581 ptep = PG_NX_MASK | PG_USER_MASK | PG_RW_MASK;
584 pde_addr = ((pdpe & PHYS_ADDR_MASK) + (((addr >> 21) & 0x1ff) << 3)) &
586 pde = ldq_phys(pde_addr);
587 if (!(pde & PG_PRESENT_MASK)) {
591 if (!(env->efer & MSR_EFER_NXE) && (pde & PG_NX_MASK)) {
592 error_code = PG_ERROR_RSVD_MASK;
595 ptep &= pde ^ PG_NX_MASK;
596 if (pde & PG_PSE_MASK) {
598 page_size = 2048 * 1024;
600 if ((ptep & PG_NX_MASK) && is_write1 == 2)
601 goto do_fault_protect;
603 if (!(ptep & PG_USER_MASK))
604 goto do_fault_protect;
605 if (is_write && !(ptep & PG_RW_MASK))
606 goto do_fault_protect;
608 if ((env->cr[0] & CR0_WP_MASK) &&
609 is_write && !(ptep & PG_RW_MASK))
610 goto do_fault_protect;
612 is_dirty = is_write && !(pde & PG_DIRTY_MASK);
613 if (!(pde & PG_ACCESSED_MASK) || is_dirty) {
614 pde |= PG_ACCESSED_MASK;
616 pde |= PG_DIRTY_MASK;
617 stl_phys_notdirty(pde_addr, pde);
619 /* align to page_size */
620 pte = pde & ((PHYS_ADDR_MASK & ~(page_size - 1)) | 0xfff);
621 virt_addr = addr & ~(page_size - 1);
624 if (!(pde & PG_ACCESSED_MASK)) {
625 pde |= PG_ACCESSED_MASK;
626 stl_phys_notdirty(pde_addr, pde);
628 pte_addr = ((pde & PHYS_ADDR_MASK) + (((addr >> 12) & 0x1ff) << 3)) &
630 pte = ldq_phys(pte_addr);
631 if (!(pte & PG_PRESENT_MASK)) {
635 if (!(env->efer & MSR_EFER_NXE) && (pte & PG_NX_MASK)) {
636 error_code = PG_ERROR_RSVD_MASK;
639 /* combine pde and pte nx, user and rw protections */
640 ptep &= pte ^ PG_NX_MASK;
642 if ((ptep & PG_NX_MASK) && is_write1 == 2)
643 goto do_fault_protect;
645 if (!(ptep & PG_USER_MASK))
646 goto do_fault_protect;
647 if (is_write && !(ptep & PG_RW_MASK))
648 goto do_fault_protect;
650 if ((env->cr[0] & CR0_WP_MASK) &&
651 is_write && !(ptep & PG_RW_MASK))
652 goto do_fault_protect;
654 is_dirty = is_write && !(pte & PG_DIRTY_MASK);
655 if (!(pte & PG_ACCESSED_MASK) || is_dirty) {
656 pte |= PG_ACCESSED_MASK;
658 pte |= PG_DIRTY_MASK;
659 stl_phys_notdirty(pte_addr, pte);
662 virt_addr = addr & ~0xfff;
663 pte = pte & (PHYS_ADDR_MASK | 0xfff);
668 /* page directory entry */
669 pde_addr = ((env->cr[3] & ~0xfff) + ((addr >> 20) & 0xffc)) &
671 pde = ldl_phys(pde_addr);
672 if (!(pde & PG_PRESENT_MASK)) {
676 /* if PSE bit is set, then we use a 4MB page */
677 if ((pde & PG_PSE_MASK) && (env->cr[4] & CR4_PSE_MASK)) {
678 page_size = 4096 * 1024;
680 if (!(pde & PG_USER_MASK))
681 goto do_fault_protect;
682 if (is_write && !(pde & PG_RW_MASK))
683 goto do_fault_protect;
685 if ((env->cr[0] & CR0_WP_MASK) &&
686 is_write && !(pde & PG_RW_MASK))
687 goto do_fault_protect;
689 is_dirty = is_write && !(pde & PG_DIRTY_MASK);
690 if (!(pde & PG_ACCESSED_MASK) || is_dirty) {
691 pde |= PG_ACCESSED_MASK;
693 pde |= PG_DIRTY_MASK;
694 stl_phys_notdirty(pde_addr, pde);
697 pte = pde & ~( (page_size - 1) & ~0xfff); /* align to page_size */
699 virt_addr = addr & ~(page_size - 1);
701 if (!(pde & PG_ACCESSED_MASK)) {
702 pde |= PG_ACCESSED_MASK;
703 stl_phys_notdirty(pde_addr, pde);
706 /* page directory entry */
707 pte_addr = ((pde & ~0xfff) + ((addr >> 10) & 0xffc)) &
709 pte = ldl_phys(pte_addr);
710 if (!(pte & PG_PRESENT_MASK)) {
714 /* combine pde and pte user and rw protections */
717 if (!(ptep & PG_USER_MASK))
718 goto do_fault_protect;
719 if (is_write && !(ptep & PG_RW_MASK))
720 goto do_fault_protect;
722 if ((env->cr[0] & CR0_WP_MASK) &&
723 is_write && !(ptep & PG_RW_MASK))
724 goto do_fault_protect;
726 is_dirty = is_write && !(pte & PG_DIRTY_MASK);
727 if (!(pte & PG_ACCESSED_MASK) || is_dirty) {
728 pte |= PG_ACCESSED_MASK;
730 pte |= PG_DIRTY_MASK;
731 stl_phys_notdirty(pte_addr, pte);
734 virt_addr = addr & ~0xfff;
737 /* the page can be put in the TLB */
739 if (!(ptep & PG_NX_MASK))
741 if (pte & PG_DIRTY_MASK) {
742 /* only set write access if already dirty... otherwise wait
745 if (ptep & PG_RW_MASK)
748 if (!(env->cr[0] & CR0_WP_MASK) ||
754 pte = pte & env->a20_mask;
756 /* Even if 4MB pages, we map only one 4KB page in the cache to
757 avoid filling it too fast */
758 page_offset = (addr & TARGET_PAGE_MASK) & (page_size - 1);
759 paddr = (pte & TARGET_PAGE_MASK) + page_offset;
760 vaddr = virt_addr + page_offset;
762 tlb_set_page(env, vaddr, paddr, prot, mmu_idx, page_size);
765 error_code = PG_ERROR_P_MASK;
767 error_code |= (is_write << PG_ERROR_W_BIT);
769 error_code |= PG_ERROR_U_MASK;
770 if (is_write1 == 2 &&
771 (env->efer & MSR_EFER_NXE) &&
772 (env->cr[4] & CR4_PAE_MASK))
773 error_code |= PG_ERROR_I_D_MASK;
774 if (env->intercept_exceptions & (1 << EXCP0E_PAGE)) {
775 /* cr2 is not modified in case of exceptions */
776 stq_phys(env->vm_vmcb + offsetof(struct vmcb, control.exit_info_2),
781 env->error_code = error_code;
782 env->exception_index = EXCP0E_PAGE;
786 target_phys_addr_t cpu_get_phys_page_debug(CPUX86State *env, target_ulong addr)
788 target_ulong pde_addr, pte_addr;
790 target_phys_addr_t paddr;
791 uint32_t page_offset;
794 if (env->cr[4] & CR4_PAE_MASK) {
795 target_ulong pdpe_addr;
799 if (env->hflags & HF_LMA_MASK) {
800 uint64_t pml4e_addr, pml4e;
803 /* test virtual address sign extension */
804 sext = (int64_t)addr >> 47;
805 if (sext != 0 && sext != -1)
808 pml4e_addr = ((env->cr[3] & ~0xfff) + (((addr >> 39) & 0x1ff) << 3)) &
810 pml4e = ldq_phys(pml4e_addr);
811 if (!(pml4e & PG_PRESENT_MASK))
814 pdpe_addr = ((pml4e & ~0xfff & ~(PG_NX_MASK | PG_HI_USER_MASK)) +
815 (((addr >> 30) & 0x1ff) << 3)) & env->a20_mask;
816 pdpe = ldq_phys(pdpe_addr);
817 if (!(pdpe & PG_PRESENT_MASK))
822 pdpe_addr = ((env->cr[3] & ~0x1f) + ((addr >> 27) & 0x18)) &
824 pdpe = ldq_phys(pdpe_addr);
825 if (!(pdpe & PG_PRESENT_MASK))
829 pde_addr = ((pdpe & ~0xfff & ~(PG_NX_MASK | PG_HI_USER_MASK)) +
830 (((addr >> 21) & 0x1ff) << 3)) & env->a20_mask;
831 pde = ldq_phys(pde_addr);
832 if (!(pde & PG_PRESENT_MASK)) {
835 if (pde & PG_PSE_MASK) {
837 page_size = 2048 * 1024;
838 pte = pde & ~( (page_size - 1) & ~0xfff); /* align to page_size */
841 pte_addr = ((pde & ~0xfff & ~(PG_NX_MASK | PG_HI_USER_MASK)) +
842 (((addr >> 12) & 0x1ff) << 3)) & env->a20_mask;
844 pte = ldq_phys(pte_addr);
846 pte &= ~(PG_NX_MASK | PG_HI_USER_MASK);
847 if (!(pte & PG_PRESENT_MASK))
852 if (!(env->cr[0] & CR0_PG_MASK)) {
856 /* page directory entry */
857 pde_addr = ((env->cr[3] & ~0xfff) + ((addr >> 20) & 0xffc)) & env->a20_mask;
858 pde = ldl_phys(pde_addr);
859 if (!(pde & PG_PRESENT_MASK))
861 if ((pde & PG_PSE_MASK) && (env->cr[4] & CR4_PSE_MASK)) {
862 pte = pde & ~0x003ff000; /* align to 4MB */
863 page_size = 4096 * 1024;
865 /* page directory entry */
866 pte_addr = ((pde & ~0xfff) + ((addr >> 10) & 0xffc)) & env->a20_mask;
867 pte = ldl_phys(pte_addr);
868 if (!(pte & PG_PRESENT_MASK))
873 pte = pte & env->a20_mask;
876 page_offset = (addr & TARGET_PAGE_MASK) & (page_size - 1);
877 paddr = (pte & TARGET_PAGE_MASK) + page_offset;
881 void hw_breakpoint_insert(CPUX86State *env, int index)
885 switch (hw_breakpoint_type(env->dr[7], index)) {
887 if (hw_breakpoint_enabled(env->dr[7], index))
888 err = cpu_breakpoint_insert(env, env->dr[index], BP_CPU,
889 &env->cpu_breakpoint[index]);
892 type = BP_CPU | BP_MEM_WRITE;
895 /* No support for I/O watchpoints yet */
898 type = BP_CPU | BP_MEM_ACCESS;
900 err = cpu_watchpoint_insert(env, env->dr[index],
901 hw_breakpoint_len(env->dr[7], index),
902 type, &env->cpu_watchpoint[index]);
906 env->cpu_breakpoint[index] = NULL;
909 void hw_breakpoint_remove(CPUX86State *env, int index)
911 if (!env->cpu_breakpoint[index])
913 switch (hw_breakpoint_type(env->dr[7], index)) {
915 if (hw_breakpoint_enabled(env->dr[7], index))
916 cpu_breakpoint_remove_by_ref(env, env->cpu_breakpoint[index]);
920 cpu_watchpoint_remove_by_ref(env, env->cpu_watchpoint[index]);
923 /* No support for I/O watchpoints yet */
928 int check_hw_breakpoints(CPUX86State *env, int force_dr6_update)
934 dr6 = env->dr[6] & ~0xf;
935 for (reg = 0; reg < 4; reg++) {
936 type = hw_breakpoint_type(env->dr[7], reg);
937 if ((type == 0 && env->dr[reg] == env->eip) ||
938 ((type & 1) && env->cpu_watchpoint[reg] &&
939 (env->cpu_watchpoint[reg]->flags & BP_WATCHPOINT_HIT))) {
941 if (hw_breakpoint_enabled(env->dr[7], reg))
945 if (hit_enabled || force_dr6_update)
950 static CPUDebugExcpHandler *prev_debug_excp_handler;
952 static void breakpoint_handler(CPUX86State *env)
956 if (env->watchpoint_hit) {
957 if (env->watchpoint_hit->flags & BP_CPU) {
958 env->watchpoint_hit = NULL;
959 if (check_hw_breakpoints(env, 0))
960 raise_exception_env(EXCP01_DB, env);
962 cpu_resume_from_signal(env, NULL);
965 QTAILQ_FOREACH(bp, &env->breakpoints, entry)
966 if (bp->pc == env->eip) {
967 if (bp->flags & BP_CPU) {
968 check_hw_breakpoints(env, 1);
969 raise_exception_env(EXCP01_DB, env);
974 if (prev_debug_excp_handler)
975 prev_debug_excp_handler(env);
978 typedef struct MCEInjectionParams {
987 } MCEInjectionParams;
989 static void do_inject_x86_mce(void *data)
991 MCEInjectionParams *params = data;
992 CPUX86State *cenv = params->env;
993 uint64_t *banks = cenv->mce_banks + 4 * params->bank;
995 cpu_synchronize_state(cenv);
998 * If there is an MCE exception being processed, ignore this SRAO MCE
999 * unless unconditional injection was requested.
1001 if (!(params->flags & MCE_INJECT_UNCOND_AO)
1002 && !(params->status & MCI_STATUS_AR)
1003 && (cenv->mcg_status & MCG_STATUS_MCIP)) {
1007 if (params->status & MCI_STATUS_UC) {
1009 * if MSR_MCG_CTL is not all 1s, the uncorrected error
1010 * reporting is disabled
1012 if ((cenv->mcg_cap & MCG_CTL_P) && cenv->mcg_ctl != ~(uint64_t)0) {
1013 monitor_printf(params->mon,
1014 "CPU %d: Uncorrected error reporting disabled\n",
1020 * if MSR_MCi_CTL is not all 1s, the uncorrected error
1021 * reporting is disabled for the bank
1023 if (banks[0] != ~(uint64_t)0) {
1024 monitor_printf(params->mon,
1025 "CPU %d: Uncorrected error reporting disabled for"
1027 cenv->cpu_index, params->bank);
1031 if ((cenv->mcg_status & MCG_STATUS_MCIP) ||
1032 !(cenv->cr[4] & CR4_MCE_MASK)) {
1033 monitor_printf(params->mon,
1034 "CPU %d: Previous MCE still in progress, raising"
1037 qemu_log_mask(CPU_LOG_RESET, "Triple fault\n");
1038 qemu_system_reset_request();
1041 if (banks[1] & MCI_STATUS_VAL) {
1042 params->status |= MCI_STATUS_OVER;
1044 banks[2] = params->addr;
1045 banks[3] = params->misc;
1046 cenv->mcg_status = params->mcg_status;
1047 banks[1] = params->status;
1048 cpu_interrupt(cenv, CPU_INTERRUPT_MCE);
1049 } else if (!(banks[1] & MCI_STATUS_VAL)
1050 || !(banks[1] & MCI_STATUS_UC)) {
1051 if (banks[1] & MCI_STATUS_VAL) {
1052 params->status |= MCI_STATUS_OVER;
1054 banks[2] = params->addr;
1055 banks[3] = params->misc;
1056 banks[1] = params->status;
1058 banks[1] |= MCI_STATUS_OVER;
1062 void cpu_x86_inject_mce(Monitor *mon, CPUX86State *cenv, int bank,
1063 uint64_t status, uint64_t mcg_status, uint64_t addr,
1064 uint64_t misc, int flags)
1066 MCEInjectionParams params = {
1071 .mcg_status = mcg_status,
1076 unsigned bank_num = cenv->mcg_cap & 0xff;
1079 if (!cenv->mcg_cap) {
1080 monitor_printf(mon, "MCE injection not supported\n");
1083 if (bank >= bank_num) {
1084 monitor_printf(mon, "Invalid MCE bank number\n");
1087 if (!(status & MCI_STATUS_VAL)) {
1088 monitor_printf(mon, "Invalid MCE status code\n");
1091 if ((flags & MCE_INJECT_BROADCAST)
1092 && !cpu_x86_support_mca_broadcast(cenv)) {
1093 monitor_printf(mon, "Guest CPU does not support MCA broadcast\n");
1097 run_on_cpu(cenv, do_inject_x86_mce, ¶ms);
1098 if (flags & MCE_INJECT_BROADCAST) {
1100 params.status = MCI_STATUS_VAL | MCI_STATUS_UC;
1101 params.mcg_status = MCG_STATUS_MCIP | MCG_STATUS_RIPV;
1104 for (env = first_cpu; env != NULL; env = env->next_cpu) {
1109 run_on_cpu(cenv, do_inject_x86_mce, ¶ms);
1114 void cpu_report_tpr_access(CPUX86State *env, TPRAccess access)
1116 TranslationBlock *tb;
1118 if (kvm_enabled()) {
1119 env->tpr_access_type = access;
1121 cpu_interrupt(env, CPU_INTERRUPT_TPR);
1123 tb = tb_find_pc(env->mem_io_pc);
1124 cpu_restore_state(tb, env, env->mem_io_pc);
1126 apic_handle_tpr_access_report(env->apic_state, env->eip, access);
1129 #endif /* !CONFIG_USER_ONLY */
1131 int cpu_x86_get_descr_debug(CPUX86State *env, unsigned int selector,
1132 target_ulong *base, unsigned int *limit,
1133 unsigned int *flags)
1144 index = selector & ~7;
1145 ptr = dt->base + index;
1146 if ((index + 7) > dt->limit
1147 || cpu_memory_rw_debug(env, ptr, (uint8_t *)&e1, sizeof(e1), 0) != 0
1148 || cpu_memory_rw_debug(env, ptr+4, (uint8_t *)&e2, sizeof(e2), 0) != 0)
1151 *base = ((e1 >> 16) | ((e2 & 0xff) << 16) | (e2 & 0xff000000));
1152 *limit = (e1 & 0xffff) | (e2 & 0x000f0000);
1153 if (e2 & DESC_G_MASK)
1154 *limit = (*limit << 12) | 0xfff;
1160 CPUX86State *cpu_x86_init(const char *cpu_model)
1166 cpu = X86_CPU(object_new(TYPE_X86_CPU));
1168 env->cpu_model_str = cpu_model;
1170 /* init various static tables used in TCG mode */
1171 if (tcg_enabled() && !inited) {
1173 optimize_flags_init();
1174 #ifndef CONFIG_USER_ONLY
1175 prev_debug_excp_handler =
1176 cpu_set_debug_excp_handler(breakpoint_handler);
1179 if (cpu_x86_register(cpu, cpu_model) < 0) {
1180 object_delete(OBJECT(cpu));
1184 x86_cpu_realize(OBJECT(cpu), NULL);
1189 #if !defined(CONFIG_USER_ONLY)
1190 void do_cpu_init(CPUX86State *env)
1192 int sipi = env->interrupt_request & CPU_INTERRUPT_SIPI;
1193 uint64_t pat = env->pat;
1195 cpu_state_reset(env);
1196 env->interrupt_request = sipi;
1198 apic_init_reset(env->apic_state);
1199 env->halted = !cpu_is_bsp(env);
1202 void do_cpu_sipi(CPUX86State *env)
1204 apic_sipi(env->apic_state);
1207 void do_cpu_init(CPUX86State *env)
1210 void do_cpu_sipi(CPUX86State *env)