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(CPUState *env)
34 if (qemu_loglevel_mask(CPU_LOG_RESET)) {
35 qemu_log("CPU Reset (CPU %d)\n", env->cpu_index);
36 log_cpu_state(env, X86_DUMP_FPU | X86_DUMP_CCOP);
39 memset(env, 0, offsetof(CPUX86State, breakpoints));
43 env->old_exception = -1;
45 /* init to reset state */
48 env->hflags |= HF_SOFTMMU_MASK;
50 env->hflags2 |= HF2_GIF_MASK;
52 cpu_x86_update_cr0(env, 0x60000010);
54 env->smbase = 0x30000;
56 env->idt.limit = 0xffff;
57 env->gdt.limit = 0xffff;
58 env->ldt.limit = 0xffff;
59 env->ldt.flags = DESC_P_MASK | (2 << DESC_TYPE_SHIFT);
60 env->tr.limit = 0xffff;
61 env->tr.flags = DESC_P_MASK | (11 << DESC_TYPE_SHIFT);
63 cpu_x86_load_seg_cache(env, R_CS, 0xf000, 0xffff0000, 0xffff,
64 DESC_P_MASK | DESC_S_MASK | DESC_CS_MASK |
65 DESC_R_MASK | DESC_A_MASK);
66 cpu_x86_load_seg_cache(env, R_DS, 0, 0, 0xffff,
67 DESC_P_MASK | DESC_S_MASK | DESC_W_MASK |
69 cpu_x86_load_seg_cache(env, R_ES, 0, 0, 0xffff,
70 DESC_P_MASK | DESC_S_MASK | DESC_W_MASK |
72 cpu_x86_load_seg_cache(env, R_SS, 0, 0, 0xffff,
73 DESC_P_MASK | DESC_S_MASK | DESC_W_MASK |
75 cpu_x86_load_seg_cache(env, R_FS, 0, 0, 0xffff,
76 DESC_P_MASK | DESC_S_MASK | DESC_W_MASK |
78 cpu_x86_load_seg_cache(env, R_GS, 0, 0, 0xffff,
79 DESC_P_MASK | DESC_S_MASK | DESC_W_MASK |
83 env->regs[R_EDX] = env->cpuid_version;
94 env->pat = 0x0007040600070406ULL;
95 env->msr_ia32_misc_enable = MSR_IA32_MISC_ENABLE_DEFAULT;
97 memset(env->dr, 0, sizeof(env->dr));
98 env->dr[6] = DR6_FIXED_1;
99 env->dr[7] = DR7_FIXED_1;
100 cpu_breakpoint_remove_all(env, BP_CPU);
101 cpu_watchpoint_remove_all(env, BP_CPU);
104 void cpu_x86_close(CPUX86State *env)
109 static void cpu_x86_version(CPUState *env, int *family, int *model)
111 int cpuver = env->cpuid_version;
113 if (family == NULL || model == NULL) {
117 *family = (cpuver >> 8) & 0x0f;
118 *model = ((cpuver >> 12) & 0xf0) + ((cpuver >> 4) & 0x0f);
121 /* Broadcast MCA signal for processor version 06H_EH and above */
122 int cpu_x86_support_mca_broadcast(CPUState *env)
127 cpu_x86_version(env, &family, &model);
128 if ((family == 6 && model >= 14) || family > 6) {
135 /***********************************************************/
138 static const char *cc_op_str[] = {
194 cpu_x86_dump_seg_cache(CPUState *env, FILE *f, fprintf_function cpu_fprintf,
195 const char *name, struct SegmentCache *sc)
198 if (env->hflags & HF_CS64_MASK) {
199 cpu_fprintf(f, "%-3s=%04x %016" PRIx64 " %08x %08x", name,
200 sc->selector, sc->base, sc->limit, sc->flags & 0x00ffff00);
204 cpu_fprintf(f, "%-3s=%04x %08x %08x %08x", name, sc->selector,
205 (uint32_t)sc->base, sc->limit, sc->flags & 0x00ffff00);
208 if (!(env->hflags & HF_PE_MASK) || !(sc->flags & DESC_P_MASK))
211 cpu_fprintf(f, " DPL=%d ", (sc->flags & DESC_DPL_MASK) >> DESC_DPL_SHIFT);
212 if (sc->flags & DESC_S_MASK) {
213 if (sc->flags & DESC_CS_MASK) {
214 cpu_fprintf(f, (sc->flags & DESC_L_MASK) ? "CS64" :
215 ((sc->flags & DESC_B_MASK) ? "CS32" : "CS16"));
216 cpu_fprintf(f, " [%c%c", (sc->flags & DESC_C_MASK) ? 'C' : '-',
217 (sc->flags & DESC_R_MASK) ? 'R' : '-');
219 cpu_fprintf(f, (sc->flags & DESC_B_MASK) ? "DS " : "DS16");
220 cpu_fprintf(f, " [%c%c", (sc->flags & DESC_E_MASK) ? 'E' : '-',
221 (sc->flags & DESC_W_MASK) ? 'W' : '-');
223 cpu_fprintf(f, "%c]", (sc->flags & DESC_A_MASK) ? 'A' : '-');
225 static const char *sys_type_name[2][16] = {
227 "Reserved", "TSS16-avl", "LDT", "TSS16-busy",
228 "CallGate16", "TaskGate", "IntGate16", "TrapGate16",
229 "Reserved", "TSS32-avl", "Reserved", "TSS32-busy",
230 "CallGate32", "Reserved", "IntGate32", "TrapGate32"
233 "<hiword>", "Reserved", "LDT", "Reserved", "Reserved",
234 "Reserved", "Reserved", "Reserved", "Reserved",
235 "TSS64-avl", "Reserved", "TSS64-busy", "CallGate64",
236 "Reserved", "IntGate64", "TrapGate64"
240 sys_type_name[(env->hflags & HF_LMA_MASK) ? 1 : 0]
241 [(sc->flags & DESC_TYPE_MASK)
242 >> DESC_TYPE_SHIFT]);
245 cpu_fprintf(f, "\n");
248 #define DUMP_CODE_BYTES_TOTAL 50
249 #define DUMP_CODE_BYTES_BACKWARD 20
251 void cpu_dump_state(CPUState *env, FILE *f, fprintf_function cpu_fprintf,
256 static const char *seg_name[6] = { "ES", "CS", "SS", "DS", "FS", "GS" };
258 cpu_synchronize_state(env);
260 eflags = env->eflags;
262 if (env->hflags & HF_CS64_MASK) {
264 "RAX=%016" PRIx64 " RBX=%016" PRIx64 " RCX=%016" PRIx64 " RDX=%016" PRIx64 "\n"
265 "RSI=%016" PRIx64 " RDI=%016" PRIx64 " RBP=%016" PRIx64 " RSP=%016" PRIx64 "\n"
266 "R8 =%016" PRIx64 " R9 =%016" PRIx64 " R10=%016" PRIx64 " R11=%016" PRIx64 "\n"
267 "R12=%016" PRIx64 " R13=%016" PRIx64 " R14=%016" PRIx64 " R15=%016" PRIx64 "\n"
268 "RIP=%016" PRIx64 " RFL=%08x [%c%c%c%c%c%c%c] CPL=%d II=%d A20=%d SMM=%d HLT=%d\n",
286 eflags & DF_MASK ? 'D' : '-',
287 eflags & CC_O ? 'O' : '-',
288 eflags & CC_S ? 'S' : '-',
289 eflags & CC_Z ? 'Z' : '-',
290 eflags & CC_A ? 'A' : '-',
291 eflags & CC_P ? 'P' : '-',
292 eflags & CC_C ? 'C' : '-',
293 env->hflags & HF_CPL_MASK,
294 (env->hflags >> HF_INHIBIT_IRQ_SHIFT) & 1,
295 (env->a20_mask >> 20) & 1,
296 (env->hflags >> HF_SMM_SHIFT) & 1,
301 cpu_fprintf(f, "EAX=%08x EBX=%08x ECX=%08x EDX=%08x\n"
302 "ESI=%08x EDI=%08x EBP=%08x ESP=%08x\n"
303 "EIP=%08x EFL=%08x [%c%c%c%c%c%c%c] CPL=%d II=%d A20=%d SMM=%d HLT=%d\n",
304 (uint32_t)env->regs[R_EAX],
305 (uint32_t)env->regs[R_EBX],
306 (uint32_t)env->regs[R_ECX],
307 (uint32_t)env->regs[R_EDX],
308 (uint32_t)env->regs[R_ESI],
309 (uint32_t)env->regs[R_EDI],
310 (uint32_t)env->regs[R_EBP],
311 (uint32_t)env->regs[R_ESP],
312 (uint32_t)env->eip, eflags,
313 eflags & DF_MASK ? 'D' : '-',
314 eflags & CC_O ? 'O' : '-',
315 eflags & CC_S ? 'S' : '-',
316 eflags & CC_Z ? 'Z' : '-',
317 eflags & CC_A ? 'A' : '-',
318 eflags & CC_P ? 'P' : '-',
319 eflags & CC_C ? 'C' : '-',
320 env->hflags & HF_CPL_MASK,
321 (env->hflags >> HF_INHIBIT_IRQ_SHIFT) & 1,
322 (env->a20_mask >> 20) & 1,
323 (env->hflags >> HF_SMM_SHIFT) & 1,
327 for(i = 0; i < 6; i++) {
328 cpu_x86_dump_seg_cache(env, f, cpu_fprintf, seg_name[i],
331 cpu_x86_dump_seg_cache(env, f, cpu_fprintf, "LDT", &env->ldt);
332 cpu_x86_dump_seg_cache(env, f, cpu_fprintf, "TR", &env->tr);
335 if (env->hflags & HF_LMA_MASK) {
336 cpu_fprintf(f, "GDT= %016" PRIx64 " %08x\n",
337 env->gdt.base, env->gdt.limit);
338 cpu_fprintf(f, "IDT= %016" PRIx64 " %08x\n",
339 env->idt.base, env->idt.limit);
340 cpu_fprintf(f, "CR0=%08x CR2=%016" PRIx64 " CR3=%016" PRIx64 " CR4=%08x\n",
341 (uint32_t)env->cr[0],
344 (uint32_t)env->cr[4]);
345 for(i = 0; i < 4; i++)
346 cpu_fprintf(f, "DR%d=%016" PRIx64 " ", i, env->dr[i]);
347 cpu_fprintf(f, "\nDR6=%016" PRIx64 " DR7=%016" PRIx64 "\n",
348 env->dr[6], env->dr[7]);
352 cpu_fprintf(f, "GDT= %08x %08x\n",
353 (uint32_t)env->gdt.base, env->gdt.limit);
354 cpu_fprintf(f, "IDT= %08x %08x\n",
355 (uint32_t)env->idt.base, env->idt.limit);
356 cpu_fprintf(f, "CR0=%08x CR2=%08x CR3=%08x CR4=%08x\n",
357 (uint32_t)env->cr[0],
358 (uint32_t)env->cr[2],
359 (uint32_t)env->cr[3],
360 (uint32_t)env->cr[4]);
361 for(i = 0; i < 4; i++) {
362 cpu_fprintf(f, "DR%d=" TARGET_FMT_lx " ", i, env->dr[i]);
364 cpu_fprintf(f, "\nDR6=" TARGET_FMT_lx " DR7=" TARGET_FMT_lx "\n",
365 env->dr[6], env->dr[7]);
367 if (flags & X86_DUMP_CCOP) {
368 if ((unsigned)env->cc_op < CC_OP_NB)
369 snprintf(cc_op_name, sizeof(cc_op_name), "%s", cc_op_str[env->cc_op]);
371 snprintf(cc_op_name, sizeof(cc_op_name), "[%d]", env->cc_op);
373 if (env->hflags & HF_CS64_MASK) {
374 cpu_fprintf(f, "CCS=%016" PRIx64 " CCD=%016" PRIx64 " CCO=%-8s\n",
375 env->cc_src, env->cc_dst,
380 cpu_fprintf(f, "CCS=%08x CCD=%08x CCO=%-8s\n",
381 (uint32_t)env->cc_src, (uint32_t)env->cc_dst,
385 cpu_fprintf(f, "EFER=%016" PRIx64 "\n", env->efer);
386 if (flags & X86_DUMP_FPU) {
389 for(i = 0; i < 8; i++) {
390 fptag |= ((!env->fptags[i]) << i);
392 cpu_fprintf(f, "FCW=%04x FSW=%04x [ST=%d] FTW=%02x MXCSR=%08x\n",
394 (env->fpus & ~0x3800) | (env->fpstt & 0x7) << 11,
400 u.d = env->fpregs[i].d;
401 cpu_fprintf(f, "FPR%d=%016" PRIx64 " %04x",
402 i, u.l.lower, u.l.upper);
404 cpu_fprintf(f, "\n");
408 if (env->hflags & HF_CS64_MASK)
413 cpu_fprintf(f, "XMM%02d=%08x%08x%08x%08x",
415 env->xmm_regs[i].XMM_L(3),
416 env->xmm_regs[i].XMM_L(2),
417 env->xmm_regs[i].XMM_L(1),
418 env->xmm_regs[i].XMM_L(0));
420 cpu_fprintf(f, "\n");
425 if (flags & CPU_DUMP_CODE) {
426 target_ulong base = env->segs[R_CS].base + env->eip;
427 target_ulong offs = MIN(env->eip, DUMP_CODE_BYTES_BACKWARD);
431 cpu_fprintf(f, "Code=");
432 for (i = 0; i < DUMP_CODE_BYTES_TOTAL; i++) {
433 if (cpu_memory_rw_debug(env, base - offs + i, &code, 1, 0) == 0) {
434 snprintf(codestr, sizeof(codestr), "%02x", code);
436 snprintf(codestr, sizeof(codestr), "??");
438 cpu_fprintf(f, "%s%s%s%s", i > 0 ? " " : "",
439 i == offs ? "<" : "", codestr, i == offs ? ">" : "");
441 cpu_fprintf(f, "\n");
445 /***********************************************************/
447 /* XXX: add PGE support */
449 void cpu_x86_set_a20(CPUX86State *env, int a20_state)
451 a20_state = (a20_state != 0);
452 if (a20_state != ((env->a20_mask >> 20) & 1)) {
453 #if defined(DEBUG_MMU)
454 printf("A20 update: a20=%d\n", a20_state);
456 /* if the cpu is currently executing code, we must unlink it and
457 all the potentially executing TB */
458 cpu_interrupt(env, CPU_INTERRUPT_EXITTB);
460 /* when a20 is changed, all the MMU mappings are invalid, so
461 we must flush everything */
463 env->a20_mask = ~(1 << 20) | (a20_state << 20);
467 void cpu_x86_update_cr0(CPUX86State *env, uint32_t new_cr0)
471 #if defined(DEBUG_MMU)
472 printf("CR0 update: CR0=0x%08x\n", new_cr0);
474 if ((new_cr0 & (CR0_PG_MASK | CR0_WP_MASK | CR0_PE_MASK)) !=
475 (env->cr[0] & (CR0_PG_MASK | CR0_WP_MASK | CR0_PE_MASK))) {
480 if (!(env->cr[0] & CR0_PG_MASK) && (new_cr0 & CR0_PG_MASK) &&
481 (env->efer & MSR_EFER_LME)) {
482 /* enter in long mode */
483 /* XXX: generate an exception */
484 if (!(env->cr[4] & CR4_PAE_MASK))
486 env->efer |= MSR_EFER_LMA;
487 env->hflags |= HF_LMA_MASK;
488 } else if ((env->cr[0] & CR0_PG_MASK) && !(new_cr0 & CR0_PG_MASK) &&
489 (env->efer & MSR_EFER_LMA)) {
491 env->efer &= ~MSR_EFER_LMA;
492 env->hflags &= ~(HF_LMA_MASK | HF_CS64_MASK);
493 env->eip &= 0xffffffff;
496 env->cr[0] = new_cr0 | CR0_ET_MASK;
498 /* update PE flag in hidden flags */
499 pe_state = (env->cr[0] & CR0_PE_MASK);
500 env->hflags = (env->hflags & ~HF_PE_MASK) | (pe_state << HF_PE_SHIFT);
501 /* ensure that ADDSEG is always set in real mode */
502 env->hflags |= ((pe_state ^ 1) << HF_ADDSEG_SHIFT);
503 /* update FPU flags */
504 env->hflags = (env->hflags & ~(HF_MP_MASK | HF_EM_MASK | HF_TS_MASK)) |
505 ((new_cr0 << (HF_MP_SHIFT - 1)) & (HF_MP_MASK | HF_EM_MASK | HF_TS_MASK));
508 /* XXX: in legacy PAE mode, generate a GPF if reserved bits are set in
510 void cpu_x86_update_cr3(CPUX86State *env, target_ulong new_cr3)
512 env->cr[3] = new_cr3;
513 if (env->cr[0] & CR0_PG_MASK) {
514 #if defined(DEBUG_MMU)
515 printf("CR3 update: CR3=" TARGET_FMT_lx "\n", new_cr3);
521 void cpu_x86_update_cr4(CPUX86State *env, uint32_t new_cr4)
523 #if defined(DEBUG_MMU)
524 printf("CR4 update: CR4=%08x\n", (uint32_t)env->cr[4]);
526 if ((new_cr4 & (CR4_PGE_MASK | CR4_PAE_MASK | CR4_PSE_MASK)) !=
527 (env->cr[4] & (CR4_PGE_MASK | CR4_PAE_MASK | CR4_PSE_MASK))) {
531 if (!(env->cpuid_features & CPUID_SSE))
532 new_cr4 &= ~CR4_OSFXSR_MASK;
533 if (new_cr4 & CR4_OSFXSR_MASK)
534 env->hflags |= HF_OSFXSR_MASK;
536 env->hflags &= ~HF_OSFXSR_MASK;
538 env->cr[4] = new_cr4;
541 #if defined(CONFIG_USER_ONLY)
543 int cpu_x86_handle_mmu_fault(CPUX86State *env, target_ulong addr,
544 int is_write, int mmu_idx)
546 /* user mode only emulation */
549 env->error_code = (is_write << PG_ERROR_W_BIT);
550 env->error_code |= PG_ERROR_U_MASK;
551 env->exception_index = EXCP0E_PAGE;
557 /* XXX: This value should match the one returned by CPUID
559 # if defined(TARGET_X86_64)
560 # define PHYS_ADDR_MASK 0xfffffff000LL
562 # define PHYS_ADDR_MASK 0xffffff000LL
566 -1 = cannot handle fault
567 0 = nothing more to do
568 1 = generate PF fault
570 int cpu_x86_handle_mmu_fault(CPUX86State *env, target_ulong addr,
571 int is_write1, int mmu_idx)
574 target_ulong pde_addr, pte_addr;
575 int error_code, is_dirty, prot, page_size, is_write, is_user;
576 target_phys_addr_t paddr;
577 uint32_t page_offset;
578 target_ulong vaddr, virt_addr;
580 is_user = mmu_idx == MMU_USER_IDX;
581 #if defined(DEBUG_MMU)
582 printf("MMU fault: addr=" TARGET_FMT_lx " w=%d u=%d eip=" TARGET_FMT_lx "\n",
583 addr, is_write1, is_user, env->eip);
585 is_write = is_write1 & 1;
587 if (!(env->cr[0] & CR0_PG_MASK)) {
589 virt_addr = addr & TARGET_PAGE_MASK;
590 prot = PAGE_READ | PAGE_WRITE | PAGE_EXEC;
595 if (env->cr[4] & CR4_PAE_MASK) {
597 target_ulong pdpe_addr;
600 if (env->hflags & HF_LMA_MASK) {
601 uint64_t pml4e_addr, pml4e;
604 /* test virtual address sign extension */
605 sext = (int64_t)addr >> 47;
606 if (sext != 0 && sext != -1) {
608 env->exception_index = EXCP0D_GPF;
612 pml4e_addr = ((env->cr[3] & ~0xfff) + (((addr >> 39) & 0x1ff) << 3)) &
614 pml4e = ldq_phys(pml4e_addr);
615 if (!(pml4e & PG_PRESENT_MASK)) {
619 if (!(env->efer & MSR_EFER_NXE) && (pml4e & PG_NX_MASK)) {
620 error_code = PG_ERROR_RSVD_MASK;
623 if (!(pml4e & PG_ACCESSED_MASK)) {
624 pml4e |= PG_ACCESSED_MASK;
625 stl_phys_notdirty(pml4e_addr, pml4e);
627 ptep = pml4e ^ PG_NX_MASK;
628 pdpe_addr = ((pml4e & PHYS_ADDR_MASK) + (((addr >> 30) & 0x1ff) << 3)) &
630 pdpe = ldq_phys(pdpe_addr);
631 if (!(pdpe & PG_PRESENT_MASK)) {
635 if (!(env->efer & MSR_EFER_NXE) && (pdpe & PG_NX_MASK)) {
636 error_code = PG_ERROR_RSVD_MASK;
639 ptep &= pdpe ^ PG_NX_MASK;
640 if (!(pdpe & PG_ACCESSED_MASK)) {
641 pdpe |= PG_ACCESSED_MASK;
642 stl_phys_notdirty(pdpe_addr, pdpe);
647 /* XXX: load them when cr3 is loaded ? */
648 pdpe_addr = ((env->cr[3] & ~0x1f) + ((addr >> 27) & 0x18)) &
650 pdpe = ldq_phys(pdpe_addr);
651 if (!(pdpe & PG_PRESENT_MASK)) {
655 ptep = PG_NX_MASK | PG_USER_MASK | PG_RW_MASK;
658 pde_addr = ((pdpe & PHYS_ADDR_MASK) + (((addr >> 21) & 0x1ff) << 3)) &
660 pde = ldq_phys(pde_addr);
661 if (!(pde & PG_PRESENT_MASK)) {
665 if (!(env->efer & MSR_EFER_NXE) && (pde & PG_NX_MASK)) {
666 error_code = PG_ERROR_RSVD_MASK;
669 ptep &= pde ^ PG_NX_MASK;
670 if (pde & PG_PSE_MASK) {
672 page_size = 2048 * 1024;
674 if ((ptep & PG_NX_MASK) && is_write1 == 2)
675 goto do_fault_protect;
677 if (!(ptep & PG_USER_MASK))
678 goto do_fault_protect;
679 if (is_write && !(ptep & PG_RW_MASK))
680 goto do_fault_protect;
682 if ((env->cr[0] & CR0_WP_MASK) &&
683 is_write && !(ptep & PG_RW_MASK))
684 goto do_fault_protect;
686 is_dirty = is_write && !(pde & PG_DIRTY_MASK);
687 if (!(pde & PG_ACCESSED_MASK) || is_dirty) {
688 pde |= PG_ACCESSED_MASK;
690 pde |= PG_DIRTY_MASK;
691 stl_phys_notdirty(pde_addr, pde);
693 /* align to page_size */
694 pte = pde & ((PHYS_ADDR_MASK & ~(page_size - 1)) | 0xfff);
695 virt_addr = addr & ~(page_size - 1);
698 if (!(pde & PG_ACCESSED_MASK)) {
699 pde |= PG_ACCESSED_MASK;
700 stl_phys_notdirty(pde_addr, pde);
702 pte_addr = ((pde & PHYS_ADDR_MASK) + (((addr >> 12) & 0x1ff) << 3)) &
704 pte = ldq_phys(pte_addr);
705 if (!(pte & PG_PRESENT_MASK)) {
709 if (!(env->efer & MSR_EFER_NXE) && (pte & PG_NX_MASK)) {
710 error_code = PG_ERROR_RSVD_MASK;
713 /* combine pde and pte nx, user and rw protections */
714 ptep &= pte ^ PG_NX_MASK;
716 if ((ptep & PG_NX_MASK) && is_write1 == 2)
717 goto do_fault_protect;
719 if (!(ptep & PG_USER_MASK))
720 goto do_fault_protect;
721 if (is_write && !(ptep & PG_RW_MASK))
722 goto do_fault_protect;
724 if ((env->cr[0] & CR0_WP_MASK) &&
725 is_write && !(ptep & PG_RW_MASK))
726 goto do_fault_protect;
728 is_dirty = is_write && !(pte & PG_DIRTY_MASK);
729 if (!(pte & PG_ACCESSED_MASK) || is_dirty) {
730 pte |= PG_ACCESSED_MASK;
732 pte |= PG_DIRTY_MASK;
733 stl_phys_notdirty(pte_addr, pte);
736 virt_addr = addr & ~0xfff;
737 pte = pte & (PHYS_ADDR_MASK | 0xfff);
742 /* page directory entry */
743 pde_addr = ((env->cr[3] & ~0xfff) + ((addr >> 20) & 0xffc)) &
745 pde = ldl_phys(pde_addr);
746 if (!(pde & PG_PRESENT_MASK)) {
750 /* if PSE bit is set, then we use a 4MB page */
751 if ((pde & PG_PSE_MASK) && (env->cr[4] & CR4_PSE_MASK)) {
752 page_size = 4096 * 1024;
754 if (!(pde & PG_USER_MASK))
755 goto do_fault_protect;
756 if (is_write && !(pde & PG_RW_MASK))
757 goto do_fault_protect;
759 if ((env->cr[0] & CR0_WP_MASK) &&
760 is_write && !(pde & PG_RW_MASK))
761 goto do_fault_protect;
763 is_dirty = is_write && !(pde & PG_DIRTY_MASK);
764 if (!(pde & PG_ACCESSED_MASK) || is_dirty) {
765 pde |= PG_ACCESSED_MASK;
767 pde |= PG_DIRTY_MASK;
768 stl_phys_notdirty(pde_addr, pde);
771 pte = pde & ~( (page_size - 1) & ~0xfff); /* align to page_size */
773 virt_addr = addr & ~(page_size - 1);
775 if (!(pde & PG_ACCESSED_MASK)) {
776 pde |= PG_ACCESSED_MASK;
777 stl_phys_notdirty(pde_addr, pde);
780 /* page directory entry */
781 pte_addr = ((pde & ~0xfff) + ((addr >> 10) & 0xffc)) &
783 pte = ldl_phys(pte_addr);
784 if (!(pte & PG_PRESENT_MASK)) {
788 /* combine pde and pte user and rw protections */
791 if (!(ptep & PG_USER_MASK))
792 goto do_fault_protect;
793 if (is_write && !(ptep & PG_RW_MASK))
794 goto do_fault_protect;
796 if ((env->cr[0] & CR0_WP_MASK) &&
797 is_write && !(ptep & PG_RW_MASK))
798 goto do_fault_protect;
800 is_dirty = is_write && !(pte & PG_DIRTY_MASK);
801 if (!(pte & PG_ACCESSED_MASK) || is_dirty) {
802 pte |= PG_ACCESSED_MASK;
804 pte |= PG_DIRTY_MASK;
805 stl_phys_notdirty(pte_addr, pte);
808 virt_addr = addr & ~0xfff;
811 /* the page can be put in the TLB */
813 if (!(ptep & PG_NX_MASK))
815 if (pte & PG_DIRTY_MASK) {
816 /* only set write access if already dirty... otherwise wait
819 if (ptep & PG_RW_MASK)
822 if (!(env->cr[0] & CR0_WP_MASK) ||
828 pte = pte & env->a20_mask;
830 /* Even if 4MB pages, we map only one 4KB page in the cache to
831 avoid filling it too fast */
832 page_offset = (addr & TARGET_PAGE_MASK) & (page_size - 1);
833 paddr = (pte & TARGET_PAGE_MASK) + page_offset;
834 vaddr = virt_addr + page_offset;
836 tlb_set_page(env, vaddr, paddr, prot, mmu_idx, page_size);
839 error_code = PG_ERROR_P_MASK;
841 error_code |= (is_write << PG_ERROR_W_BIT);
843 error_code |= PG_ERROR_U_MASK;
844 if (is_write1 == 2 &&
845 (env->efer & MSR_EFER_NXE) &&
846 (env->cr[4] & CR4_PAE_MASK))
847 error_code |= PG_ERROR_I_D_MASK;
848 if (env->intercept_exceptions & (1 << EXCP0E_PAGE)) {
849 /* cr2 is not modified in case of exceptions */
850 stq_phys(env->vm_vmcb + offsetof(struct vmcb, control.exit_info_2),
855 env->error_code = error_code;
856 env->exception_index = EXCP0E_PAGE;
860 target_phys_addr_t cpu_get_phys_page_debug(CPUState *env, target_ulong addr)
862 target_ulong pde_addr, pte_addr;
864 target_phys_addr_t paddr;
865 uint32_t page_offset;
868 if (env->cr[4] & CR4_PAE_MASK) {
869 target_ulong pdpe_addr;
873 if (env->hflags & HF_LMA_MASK) {
874 uint64_t pml4e_addr, pml4e;
877 /* test virtual address sign extension */
878 sext = (int64_t)addr >> 47;
879 if (sext != 0 && sext != -1)
882 pml4e_addr = ((env->cr[3] & ~0xfff) + (((addr >> 39) & 0x1ff) << 3)) &
884 pml4e = ldq_phys(pml4e_addr);
885 if (!(pml4e & PG_PRESENT_MASK))
888 pdpe_addr = ((pml4e & ~0xfff & ~(PG_NX_MASK | PG_HI_USER_MASK)) +
889 (((addr >> 30) & 0x1ff) << 3)) & env->a20_mask;
890 pdpe = ldq_phys(pdpe_addr);
891 if (!(pdpe & PG_PRESENT_MASK))
896 pdpe_addr = ((env->cr[3] & ~0x1f) + ((addr >> 27) & 0x18)) &
898 pdpe = ldq_phys(pdpe_addr);
899 if (!(pdpe & PG_PRESENT_MASK))
903 pde_addr = ((pdpe & ~0xfff & ~(PG_NX_MASK | PG_HI_USER_MASK)) +
904 (((addr >> 21) & 0x1ff) << 3)) & env->a20_mask;
905 pde = ldq_phys(pde_addr);
906 if (!(pde & PG_PRESENT_MASK)) {
909 if (pde & PG_PSE_MASK) {
911 page_size = 2048 * 1024;
912 pte = pde & ~( (page_size - 1) & ~0xfff); /* align to page_size */
915 pte_addr = ((pde & ~0xfff & ~(PG_NX_MASK | PG_HI_USER_MASK)) +
916 (((addr >> 12) & 0x1ff) << 3)) & env->a20_mask;
918 pte = ldq_phys(pte_addr);
920 pte &= ~(PG_NX_MASK | PG_HI_USER_MASK);
921 if (!(pte & PG_PRESENT_MASK))
926 if (!(env->cr[0] & CR0_PG_MASK)) {
930 /* page directory entry */
931 pde_addr = ((env->cr[3] & ~0xfff) + ((addr >> 20) & 0xffc)) & env->a20_mask;
932 pde = ldl_phys(pde_addr);
933 if (!(pde & PG_PRESENT_MASK))
935 if ((pde & PG_PSE_MASK) && (env->cr[4] & CR4_PSE_MASK)) {
936 pte = pde & ~0x003ff000; /* align to 4MB */
937 page_size = 4096 * 1024;
939 /* page directory entry */
940 pte_addr = ((pde & ~0xfff) + ((addr >> 10) & 0xffc)) & env->a20_mask;
941 pte = ldl_phys(pte_addr);
942 if (!(pte & PG_PRESENT_MASK))
947 pte = pte & env->a20_mask;
950 page_offset = (addr & TARGET_PAGE_MASK) & (page_size - 1);
951 paddr = (pte & TARGET_PAGE_MASK) + page_offset;
955 void hw_breakpoint_insert(CPUState *env, int index)
959 switch (hw_breakpoint_type(env->dr[7], index)) {
961 if (hw_breakpoint_enabled(env->dr[7], index))
962 err = cpu_breakpoint_insert(env, env->dr[index], BP_CPU,
963 &env->cpu_breakpoint[index]);
966 type = BP_CPU | BP_MEM_WRITE;
969 /* No support for I/O watchpoints yet */
972 type = BP_CPU | BP_MEM_ACCESS;
974 err = cpu_watchpoint_insert(env, env->dr[index],
975 hw_breakpoint_len(env->dr[7], index),
976 type, &env->cpu_watchpoint[index]);
980 env->cpu_breakpoint[index] = NULL;
983 void hw_breakpoint_remove(CPUState *env, int index)
985 if (!env->cpu_breakpoint[index])
987 switch (hw_breakpoint_type(env->dr[7], index)) {
989 if (hw_breakpoint_enabled(env->dr[7], index))
990 cpu_breakpoint_remove_by_ref(env, env->cpu_breakpoint[index]);
994 cpu_watchpoint_remove_by_ref(env, env->cpu_watchpoint[index]);
997 /* No support for I/O watchpoints yet */
1002 int check_hw_breakpoints(CPUState *env, int force_dr6_update)
1006 int hit_enabled = 0;
1008 dr6 = env->dr[6] & ~0xf;
1009 for (reg = 0; reg < 4; reg++) {
1010 type = hw_breakpoint_type(env->dr[7], reg);
1011 if ((type == 0 && env->dr[reg] == env->eip) ||
1012 ((type & 1) && env->cpu_watchpoint[reg] &&
1013 (env->cpu_watchpoint[reg]->flags & BP_WATCHPOINT_HIT))) {
1015 if (hw_breakpoint_enabled(env->dr[7], reg))
1019 if (hit_enabled || force_dr6_update)
1024 static CPUDebugExcpHandler *prev_debug_excp_handler;
1026 static void breakpoint_handler(CPUState *env)
1030 if (env->watchpoint_hit) {
1031 if (env->watchpoint_hit->flags & BP_CPU) {
1032 env->watchpoint_hit = NULL;
1033 if (check_hw_breakpoints(env, 0))
1034 raise_exception_env(EXCP01_DB, env);
1036 cpu_resume_from_signal(env, NULL);
1039 QTAILQ_FOREACH(bp, &env->breakpoints, entry)
1040 if (bp->pc == env->eip) {
1041 if (bp->flags & BP_CPU) {
1042 check_hw_breakpoints(env, 1);
1043 raise_exception_env(EXCP01_DB, env);
1048 if (prev_debug_excp_handler)
1049 prev_debug_excp_handler(env);
1052 typedef struct MCEInjectionParams {
1057 uint64_t mcg_status;
1061 } MCEInjectionParams;
1063 static void do_inject_x86_mce(void *data)
1065 MCEInjectionParams *params = data;
1066 CPUState *cenv = params->env;
1067 uint64_t *banks = cenv->mce_banks + 4 * params->bank;
1069 cpu_synchronize_state(cenv);
1072 * If there is an MCE exception being processed, ignore this SRAO MCE
1073 * unless unconditional injection was requested.
1075 if (!(params->flags & MCE_INJECT_UNCOND_AO)
1076 && !(params->status & MCI_STATUS_AR)
1077 && (cenv->mcg_status & MCG_STATUS_MCIP)) {
1081 if (params->status & MCI_STATUS_UC) {
1083 * if MSR_MCG_CTL is not all 1s, the uncorrected error
1084 * reporting is disabled
1086 if ((cenv->mcg_cap & MCG_CTL_P) && cenv->mcg_ctl != ~(uint64_t)0) {
1087 monitor_printf(params->mon,
1088 "CPU %d: Uncorrected error reporting disabled\n",
1094 * if MSR_MCi_CTL is not all 1s, the uncorrected error
1095 * reporting is disabled for the bank
1097 if (banks[0] != ~(uint64_t)0) {
1098 monitor_printf(params->mon,
1099 "CPU %d: Uncorrected error reporting disabled for"
1101 cenv->cpu_index, params->bank);
1105 if ((cenv->mcg_status & MCG_STATUS_MCIP) ||
1106 !(cenv->cr[4] & CR4_MCE_MASK)) {
1107 monitor_printf(params->mon,
1108 "CPU %d: Previous MCE still in progress, raising"
1111 qemu_log_mask(CPU_LOG_RESET, "Triple fault\n");
1112 qemu_system_reset_request();
1115 if (banks[1] & MCI_STATUS_VAL) {
1116 params->status |= MCI_STATUS_OVER;
1118 banks[2] = params->addr;
1119 banks[3] = params->misc;
1120 cenv->mcg_status = params->mcg_status;
1121 banks[1] = params->status;
1122 cpu_interrupt(cenv, CPU_INTERRUPT_MCE);
1123 } else if (!(banks[1] & MCI_STATUS_VAL)
1124 || !(banks[1] & MCI_STATUS_UC)) {
1125 if (banks[1] & MCI_STATUS_VAL) {
1126 params->status |= MCI_STATUS_OVER;
1128 banks[2] = params->addr;
1129 banks[3] = params->misc;
1130 banks[1] = params->status;
1132 banks[1] |= MCI_STATUS_OVER;
1136 void cpu_x86_inject_mce(Monitor *mon, CPUState *cenv, int bank,
1137 uint64_t status, uint64_t mcg_status, uint64_t addr,
1138 uint64_t misc, int flags)
1140 MCEInjectionParams params = {
1145 .mcg_status = mcg_status,
1150 unsigned bank_num = cenv->mcg_cap & 0xff;
1153 if (!cenv->mcg_cap) {
1154 monitor_printf(mon, "MCE injection not supported\n");
1157 if (bank >= bank_num) {
1158 monitor_printf(mon, "Invalid MCE bank number\n");
1161 if (!(status & MCI_STATUS_VAL)) {
1162 monitor_printf(mon, "Invalid MCE status code\n");
1165 if ((flags & MCE_INJECT_BROADCAST)
1166 && !cpu_x86_support_mca_broadcast(cenv)) {
1167 monitor_printf(mon, "Guest CPU does not support MCA broadcast\n");
1171 run_on_cpu(cenv, do_inject_x86_mce, ¶ms);
1172 if (flags & MCE_INJECT_BROADCAST) {
1174 params.status = MCI_STATUS_VAL | MCI_STATUS_UC;
1175 params.mcg_status = MCG_STATUS_MCIP | MCG_STATUS_RIPV;
1178 for (env = first_cpu; env != NULL; env = env->next_cpu) {
1183 run_on_cpu(cenv, do_inject_x86_mce, ¶ms);
1188 void cpu_report_tpr_access(CPUState *env, TPRAccess access)
1190 TranslationBlock *tb;
1192 if (kvm_enabled()) {
1193 env->tpr_access_type = access;
1195 cpu_interrupt(env, CPU_INTERRUPT_TPR);
1197 tb = tb_find_pc(env->mem_io_pc);
1198 cpu_restore_state(tb, env, env->mem_io_pc);
1200 apic_handle_tpr_access_report(env->apic_state, env->eip, access);
1203 #endif /* !CONFIG_USER_ONLY */
1205 static void mce_init(CPUX86State *cenv)
1209 if (((cenv->cpuid_version >> 8) & 0xf) >= 6
1210 && (cenv->cpuid_features & (CPUID_MCE | CPUID_MCA)) ==
1211 (CPUID_MCE | CPUID_MCA)) {
1212 cenv->mcg_cap = MCE_CAP_DEF | MCE_BANKS_DEF;
1213 cenv->mcg_ctl = ~(uint64_t)0;
1214 for (bank = 0; bank < MCE_BANKS_DEF; bank++) {
1215 cenv->mce_banks[bank * 4] = ~(uint64_t)0;
1220 int cpu_x86_get_descr_debug(CPUX86State *env, unsigned int selector,
1221 target_ulong *base, unsigned int *limit,
1222 unsigned int *flags)
1233 index = selector & ~7;
1234 ptr = dt->base + index;
1235 if ((index + 7) > dt->limit
1236 || cpu_memory_rw_debug(env, ptr, (uint8_t *)&e1, sizeof(e1), 0) != 0
1237 || cpu_memory_rw_debug(env, ptr+4, (uint8_t *)&e2, sizeof(e2), 0) != 0)
1240 *base = ((e1 >> 16) | ((e2 & 0xff) << 16) | (e2 & 0xff000000));
1241 *limit = (e1 & 0xffff) | (e2 & 0x000f0000);
1242 if (e2 & DESC_G_MASK)
1243 *limit = (*limit << 12) | 0xfff;
1249 CPUX86State *cpu_x86_init(const char *cpu_model)
1254 env = g_malloc0(sizeof(CPUX86State));
1256 env->cpu_model_str = cpu_model;
1258 /* init various static tables used in TCG mode */
1259 if (tcg_enabled() && !inited) {
1261 optimize_flags_init();
1262 #ifndef CONFIG_USER_ONLY
1263 prev_debug_excp_handler =
1264 cpu_set_debug_excp_handler(breakpoint_handler);
1267 if (cpu_x86_register(env, cpu_model) < 0) {
1271 env->cpuid_apic_id = env->cpu_index;
1274 qemu_init_vcpu(env);
1279 #if !defined(CONFIG_USER_ONLY)
1280 void do_cpu_init(CPUState *env)
1282 int sipi = env->interrupt_request & CPU_INTERRUPT_SIPI;
1283 uint64_t pat = env->pat;
1285 cpu_state_reset(env);
1286 env->interrupt_request = sipi;
1288 apic_init_reset(env->apic_state);
1289 env->halted = !cpu_is_bsp(env);
1292 void do_cpu_sipi(CPUState *env)
1294 apic_sipi(env->apic_state);
1297 void do_cpu_init(CPUState *env)
1300 void do_cpu_sipi(CPUState *env)