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/>.
21 #include "sysemu/kvm.h"
23 #ifndef CONFIG_USER_ONLY
24 #include "sysemu/sysemu.h"
25 #include "monitor/monitor.h"
30 static void cpu_x86_version(CPUX86State *env, int *family, int *model)
32 int cpuver = env->cpuid_version;
34 if (family == NULL || model == NULL) {
38 *family = (cpuver >> 8) & 0x0f;
39 *model = ((cpuver >> 12) & 0xf0) + ((cpuver >> 4) & 0x0f);
42 /* Broadcast MCA signal for processor version 06H_EH and above */
43 int cpu_x86_support_mca_broadcast(CPUX86State *env)
48 cpu_x86_version(env, &family, &model);
49 if ((family == 6 && model >= 14) || family > 6) {
56 /***********************************************************/
59 static const char *cc_op_str[CC_OP_NB] = {
126 cpu_x86_dump_seg_cache(CPUX86State *env, FILE *f, fprintf_function cpu_fprintf,
127 const char *name, struct SegmentCache *sc)
130 if (env->hflags & HF_CS64_MASK) {
131 cpu_fprintf(f, "%-3s=%04x %016" PRIx64 " %08x %08x", name,
132 sc->selector, sc->base, sc->limit, sc->flags & 0x00ffff00);
136 cpu_fprintf(f, "%-3s=%04x %08x %08x %08x", name, sc->selector,
137 (uint32_t)sc->base, sc->limit, sc->flags & 0x00ffff00);
140 if (!(env->hflags & HF_PE_MASK) || !(sc->flags & DESC_P_MASK))
143 cpu_fprintf(f, " DPL=%d ", (sc->flags & DESC_DPL_MASK) >> DESC_DPL_SHIFT);
144 if (sc->flags & DESC_S_MASK) {
145 if (sc->flags & DESC_CS_MASK) {
146 cpu_fprintf(f, (sc->flags & DESC_L_MASK) ? "CS64" :
147 ((sc->flags & DESC_B_MASK) ? "CS32" : "CS16"));
148 cpu_fprintf(f, " [%c%c", (sc->flags & DESC_C_MASK) ? 'C' : '-',
149 (sc->flags & DESC_R_MASK) ? 'R' : '-');
152 (sc->flags & DESC_B_MASK || env->hflags & HF_LMA_MASK)
154 cpu_fprintf(f, " [%c%c", (sc->flags & DESC_E_MASK) ? 'E' : '-',
155 (sc->flags & DESC_W_MASK) ? 'W' : '-');
157 cpu_fprintf(f, "%c]", (sc->flags & DESC_A_MASK) ? 'A' : '-');
159 static const char *sys_type_name[2][16] = {
161 "Reserved", "TSS16-avl", "LDT", "TSS16-busy",
162 "CallGate16", "TaskGate", "IntGate16", "TrapGate16",
163 "Reserved", "TSS32-avl", "Reserved", "TSS32-busy",
164 "CallGate32", "Reserved", "IntGate32", "TrapGate32"
167 "<hiword>", "Reserved", "LDT", "Reserved", "Reserved",
168 "Reserved", "Reserved", "Reserved", "Reserved",
169 "TSS64-avl", "Reserved", "TSS64-busy", "CallGate64",
170 "Reserved", "IntGate64", "TrapGate64"
174 sys_type_name[(env->hflags & HF_LMA_MASK) ? 1 : 0]
175 [(sc->flags & DESC_TYPE_MASK)
176 >> DESC_TYPE_SHIFT]);
179 cpu_fprintf(f, "\n");
182 #define DUMP_CODE_BYTES_TOTAL 50
183 #define DUMP_CODE_BYTES_BACKWARD 20
185 void x86_cpu_dump_state(CPUState *cs, FILE *f, fprintf_function cpu_fprintf,
188 X86CPU *cpu = X86_CPU(cs);
189 CPUX86State *env = &cpu->env;
192 static const char *seg_name[6] = { "ES", "CS", "SS", "DS", "FS", "GS" };
194 eflags = cpu_compute_eflags(env);
196 if (env->hflags & HF_CS64_MASK) {
198 "RAX=%016" PRIx64 " RBX=%016" PRIx64 " RCX=%016" PRIx64 " RDX=%016" PRIx64 "\n"
199 "RSI=%016" PRIx64 " RDI=%016" PRIx64 " RBP=%016" PRIx64 " RSP=%016" PRIx64 "\n"
200 "R8 =%016" PRIx64 " R9 =%016" PRIx64 " R10=%016" PRIx64 " R11=%016" PRIx64 "\n"
201 "R12=%016" PRIx64 " R13=%016" PRIx64 " R14=%016" PRIx64 " R15=%016" PRIx64 "\n"
202 "RIP=%016" PRIx64 " RFL=%08x [%c%c%c%c%c%c%c] CPL=%d II=%d A20=%d SMM=%d HLT=%d\n",
220 eflags & DF_MASK ? 'D' : '-',
221 eflags & CC_O ? 'O' : '-',
222 eflags & CC_S ? 'S' : '-',
223 eflags & CC_Z ? 'Z' : '-',
224 eflags & CC_A ? 'A' : '-',
225 eflags & CC_P ? 'P' : '-',
226 eflags & CC_C ? 'C' : '-',
227 env->hflags & HF_CPL_MASK,
228 (env->hflags >> HF_INHIBIT_IRQ_SHIFT) & 1,
229 (env->a20_mask >> 20) & 1,
230 (env->hflags >> HF_SMM_SHIFT) & 1,
235 cpu_fprintf(f, "EAX=%08x EBX=%08x ECX=%08x EDX=%08x\n"
236 "ESI=%08x EDI=%08x EBP=%08x ESP=%08x\n"
237 "EIP=%08x EFL=%08x [%c%c%c%c%c%c%c] CPL=%d II=%d A20=%d SMM=%d HLT=%d\n",
238 (uint32_t)env->regs[R_EAX],
239 (uint32_t)env->regs[R_EBX],
240 (uint32_t)env->regs[R_ECX],
241 (uint32_t)env->regs[R_EDX],
242 (uint32_t)env->regs[R_ESI],
243 (uint32_t)env->regs[R_EDI],
244 (uint32_t)env->regs[R_EBP],
245 (uint32_t)env->regs[R_ESP],
246 (uint32_t)env->eip, eflags,
247 eflags & DF_MASK ? 'D' : '-',
248 eflags & CC_O ? 'O' : '-',
249 eflags & CC_S ? 'S' : '-',
250 eflags & CC_Z ? 'Z' : '-',
251 eflags & CC_A ? 'A' : '-',
252 eflags & CC_P ? 'P' : '-',
253 eflags & CC_C ? 'C' : '-',
254 env->hflags & HF_CPL_MASK,
255 (env->hflags >> HF_INHIBIT_IRQ_SHIFT) & 1,
256 (env->a20_mask >> 20) & 1,
257 (env->hflags >> HF_SMM_SHIFT) & 1,
261 for(i = 0; i < 6; i++) {
262 cpu_x86_dump_seg_cache(env, f, cpu_fprintf, seg_name[i],
265 cpu_x86_dump_seg_cache(env, f, cpu_fprintf, "LDT", &env->ldt);
266 cpu_x86_dump_seg_cache(env, f, cpu_fprintf, "TR", &env->tr);
269 if (env->hflags & HF_LMA_MASK) {
270 cpu_fprintf(f, "GDT= %016" PRIx64 " %08x\n",
271 env->gdt.base, env->gdt.limit);
272 cpu_fprintf(f, "IDT= %016" PRIx64 " %08x\n",
273 env->idt.base, env->idt.limit);
274 cpu_fprintf(f, "CR0=%08x CR2=%016" PRIx64 " CR3=%016" PRIx64 " CR4=%08x\n",
275 (uint32_t)env->cr[0],
278 (uint32_t)env->cr[4]);
279 for(i = 0; i < 4; i++)
280 cpu_fprintf(f, "DR%d=%016" PRIx64 " ", i, env->dr[i]);
281 cpu_fprintf(f, "\nDR6=%016" PRIx64 " DR7=%016" PRIx64 "\n",
282 env->dr[6], env->dr[7]);
286 cpu_fprintf(f, "GDT= %08x %08x\n",
287 (uint32_t)env->gdt.base, env->gdt.limit);
288 cpu_fprintf(f, "IDT= %08x %08x\n",
289 (uint32_t)env->idt.base, env->idt.limit);
290 cpu_fprintf(f, "CR0=%08x CR2=%08x CR3=%08x CR4=%08x\n",
291 (uint32_t)env->cr[0],
292 (uint32_t)env->cr[2],
293 (uint32_t)env->cr[3],
294 (uint32_t)env->cr[4]);
295 for(i = 0; i < 4; i++) {
296 cpu_fprintf(f, "DR%d=" TARGET_FMT_lx " ", i, env->dr[i]);
298 cpu_fprintf(f, "\nDR6=" TARGET_FMT_lx " DR7=" TARGET_FMT_lx "\n",
299 env->dr[6], env->dr[7]);
301 if (flags & CPU_DUMP_CCOP) {
302 if ((unsigned)env->cc_op < CC_OP_NB)
303 snprintf(cc_op_name, sizeof(cc_op_name), "%s", cc_op_str[env->cc_op]);
305 snprintf(cc_op_name, sizeof(cc_op_name), "[%d]", env->cc_op);
307 if (env->hflags & HF_CS64_MASK) {
308 cpu_fprintf(f, "CCS=%016" PRIx64 " CCD=%016" PRIx64 " CCO=%-8s\n",
309 env->cc_src, env->cc_dst,
314 cpu_fprintf(f, "CCS=%08x CCD=%08x CCO=%-8s\n",
315 (uint32_t)env->cc_src, (uint32_t)env->cc_dst,
319 cpu_fprintf(f, "EFER=%016" PRIx64 "\n", env->efer);
320 if (flags & CPU_DUMP_FPU) {
323 for(i = 0; i < 8; i++) {
324 fptag |= ((!env->fptags[i]) << i);
326 cpu_fprintf(f, "FCW=%04x FSW=%04x [ST=%d] FTW=%02x MXCSR=%08x\n",
328 (env->fpus & ~0x3800) | (env->fpstt & 0x7) << 11,
334 u.d = env->fpregs[i].d;
335 cpu_fprintf(f, "FPR%d=%016" PRIx64 " %04x",
336 i, u.l.lower, u.l.upper);
338 cpu_fprintf(f, "\n");
342 if (env->hflags & HF_CS64_MASK)
347 cpu_fprintf(f, "XMM%02d=%08x%08x%08x%08x",
349 env->xmm_regs[i].XMM_L(3),
350 env->xmm_regs[i].XMM_L(2),
351 env->xmm_regs[i].XMM_L(1),
352 env->xmm_regs[i].XMM_L(0));
354 cpu_fprintf(f, "\n");
359 if (flags & CPU_DUMP_CODE) {
360 target_ulong base = env->segs[R_CS].base + env->eip;
361 target_ulong offs = MIN(env->eip, DUMP_CODE_BYTES_BACKWARD);
365 cpu_fprintf(f, "Code=");
366 for (i = 0; i < DUMP_CODE_BYTES_TOTAL; i++) {
367 if (cpu_memory_rw_debug(cs, base - offs + i, &code, 1, 0) == 0) {
368 snprintf(codestr, sizeof(codestr), "%02x", code);
370 snprintf(codestr, sizeof(codestr), "??");
372 cpu_fprintf(f, "%s%s%s%s", i > 0 ? " " : "",
373 i == offs ? "<" : "", codestr, i == offs ? ">" : "");
375 cpu_fprintf(f, "\n");
379 /***********************************************************/
381 /* XXX: add PGE support */
383 void x86_cpu_set_a20(X86CPU *cpu, int a20_state)
385 CPUX86State *env = &cpu->env;
387 a20_state = (a20_state != 0);
388 if (a20_state != ((env->a20_mask >> 20) & 1)) {
389 CPUState *cs = CPU(cpu);
391 #if defined(DEBUG_MMU)
392 printf("A20 update: a20=%d\n", a20_state);
394 /* if the cpu is currently executing code, we must unlink it and
395 all the potentially executing TB */
396 cpu_interrupt(cs, CPU_INTERRUPT_EXITTB);
398 /* when a20 is changed, all the MMU mappings are invalid, so
399 we must flush everything */
401 env->a20_mask = ~(1 << 20) | (a20_state << 20);
405 void cpu_x86_update_cr0(CPUX86State *env, uint32_t new_cr0)
407 X86CPU *cpu = x86_env_get_cpu(env);
410 #if defined(DEBUG_MMU)
411 printf("CR0 update: CR0=0x%08x\n", new_cr0);
413 if ((new_cr0 & (CR0_PG_MASK | CR0_WP_MASK | CR0_PE_MASK)) !=
414 (env->cr[0] & (CR0_PG_MASK | CR0_WP_MASK | CR0_PE_MASK))) {
415 tlb_flush(CPU(cpu), 1);
419 if (!(env->cr[0] & CR0_PG_MASK) && (new_cr0 & CR0_PG_MASK) &&
420 (env->efer & MSR_EFER_LME)) {
421 /* enter in long mode */
422 /* XXX: generate an exception */
423 if (!(env->cr[4] & CR4_PAE_MASK))
425 env->efer |= MSR_EFER_LMA;
426 env->hflags |= HF_LMA_MASK;
427 } else if ((env->cr[0] & CR0_PG_MASK) && !(new_cr0 & CR0_PG_MASK) &&
428 (env->efer & MSR_EFER_LMA)) {
430 env->efer &= ~MSR_EFER_LMA;
431 env->hflags &= ~(HF_LMA_MASK | HF_CS64_MASK);
432 env->eip &= 0xffffffff;
435 env->cr[0] = new_cr0 | CR0_ET_MASK;
437 /* update PE flag in hidden flags */
438 pe_state = (env->cr[0] & CR0_PE_MASK);
439 env->hflags = (env->hflags & ~HF_PE_MASK) | (pe_state << HF_PE_SHIFT);
440 /* ensure that ADDSEG is always set in real mode */
441 env->hflags |= ((pe_state ^ 1) << HF_ADDSEG_SHIFT);
442 /* update FPU flags */
443 env->hflags = (env->hflags & ~(HF_MP_MASK | HF_EM_MASK | HF_TS_MASK)) |
444 ((new_cr0 << (HF_MP_SHIFT - 1)) & (HF_MP_MASK | HF_EM_MASK | HF_TS_MASK));
447 /* XXX: in legacy PAE mode, generate a GPF if reserved bits are set in
449 void cpu_x86_update_cr3(CPUX86State *env, target_ulong new_cr3)
451 X86CPU *cpu = x86_env_get_cpu(env);
453 env->cr[3] = new_cr3;
454 if (env->cr[0] & CR0_PG_MASK) {
455 #if defined(DEBUG_MMU)
456 printf("CR3 update: CR3=" TARGET_FMT_lx "\n", new_cr3);
458 tlb_flush(CPU(cpu), 0);
462 void cpu_x86_update_cr4(CPUX86State *env, uint32_t new_cr4)
464 X86CPU *cpu = x86_env_get_cpu(env);
466 #if defined(DEBUG_MMU)
467 printf("CR4 update: CR4=%08x\n", (uint32_t)env->cr[4]);
469 if ((new_cr4 ^ env->cr[4]) &
470 (CR4_PGE_MASK | CR4_PAE_MASK | CR4_PSE_MASK |
471 CR4_SMEP_MASK | CR4_SMAP_MASK)) {
472 tlb_flush(CPU(cpu), 1);
475 if (!(env->features[FEAT_1_EDX] & CPUID_SSE)) {
476 new_cr4 &= ~CR4_OSFXSR_MASK;
478 env->hflags &= ~HF_OSFXSR_MASK;
479 if (new_cr4 & CR4_OSFXSR_MASK) {
480 env->hflags |= HF_OSFXSR_MASK;
483 if (!(env->features[FEAT_7_0_EBX] & CPUID_7_0_EBX_SMAP)) {
484 new_cr4 &= ~CR4_SMAP_MASK;
486 env->hflags &= ~HF_SMAP_MASK;
487 if (new_cr4 & CR4_SMAP_MASK) {
488 env->hflags |= HF_SMAP_MASK;
491 env->cr[4] = new_cr4;
494 #if defined(CONFIG_USER_ONLY)
496 int x86_cpu_handle_mmu_fault(CPUState *cs, vaddr addr,
497 int is_write, int mmu_idx)
499 X86CPU *cpu = X86_CPU(cs);
500 CPUX86State *env = &cpu->env;
502 /* user mode only emulation */
505 env->error_code = (is_write << PG_ERROR_W_BIT);
506 env->error_code |= PG_ERROR_U_MASK;
507 cs->exception_index = EXCP0E_PAGE;
514 * -1 = cannot handle fault
515 * 0 = nothing more to do
516 * 1 = generate PF fault
518 int x86_cpu_handle_mmu_fault(CPUState *cs, vaddr addr,
519 int is_write1, int mmu_idx)
521 X86CPU *cpu = X86_CPU(cs);
522 CPUX86State *env = &cpu->env;
524 target_ulong pde_addr, pte_addr;
526 int is_dirty, prot, page_size, is_write, is_user;
528 uint64_t rsvd_mask = PG_HI_RSVD_MASK;
529 uint32_t page_offset;
532 is_user = mmu_idx == MMU_USER_IDX;
533 #if defined(DEBUG_MMU)
534 printf("MMU fault: addr=%" VADDR_PRIx " w=%d u=%d eip=" TARGET_FMT_lx "\n",
535 addr, is_write1, is_user, env->eip);
537 is_write = is_write1 & 1;
539 if (!(env->cr[0] & CR0_PG_MASK)) {
542 if (!(env->hflags & HF_LMA_MASK)) {
543 /* Without long mode we can only address 32bits in real mode */
547 prot = PAGE_READ | PAGE_WRITE | PAGE_EXEC;
552 if (!(env->efer & MSR_EFER_NXE)) {
553 rsvd_mask |= PG_NX_MASK;
556 if (env->cr[4] & CR4_PAE_MASK) {
558 target_ulong pdpe_addr;
561 if (env->hflags & HF_LMA_MASK) {
562 uint64_t pml4e_addr, pml4e;
565 /* test virtual address sign extension */
566 sext = (int64_t)addr >> 47;
567 if (sext != 0 && sext != -1) {
569 cs->exception_index = EXCP0D_GPF;
573 pml4e_addr = ((env->cr[3] & ~0xfff) + (((addr >> 39) & 0x1ff) << 3)) &
575 pml4e = ldq_phys(cs->as, pml4e_addr);
576 if (!(pml4e & PG_PRESENT_MASK)) {
579 if (pml4e & (rsvd_mask | PG_PSE_MASK)) {
582 if (!(pml4e & PG_ACCESSED_MASK)) {
583 pml4e |= PG_ACCESSED_MASK;
584 stl_phys_notdirty(cs->as, pml4e_addr, pml4e);
586 ptep = pml4e ^ PG_NX_MASK;
587 pdpe_addr = ((pml4e & PG_ADDRESS_MASK) + (((addr >> 30) & 0x1ff) << 3)) &
589 pdpe = ldq_phys(cs->as, pdpe_addr);
590 if (!(pdpe & PG_PRESENT_MASK)) {
593 if (pdpe & rsvd_mask) {
596 ptep &= pdpe ^ PG_NX_MASK;
597 if (!(pdpe & PG_ACCESSED_MASK)) {
598 pdpe |= PG_ACCESSED_MASK;
599 stl_phys_notdirty(cs->as, pdpe_addr, pdpe);
601 if (pdpe & PG_PSE_MASK) {
603 page_size = 1024 * 1024 * 1024;
604 pte_addr = pdpe_addr;
606 goto do_check_protect;
611 /* XXX: load them when cr3 is loaded ? */
612 pdpe_addr = ((env->cr[3] & ~0x1f) + ((addr >> 27) & 0x18)) &
614 pdpe = ldq_phys(cs->as, pdpe_addr);
615 if (!(pdpe & PG_PRESENT_MASK)) {
618 rsvd_mask |= PG_HI_USER_MASK | PG_NX_MASK;
619 if (pdpe & rsvd_mask) {
622 ptep = PG_NX_MASK | PG_USER_MASK | PG_RW_MASK;
625 pde_addr = ((pdpe & PG_ADDRESS_MASK) + (((addr >> 21) & 0x1ff) << 3)) &
627 pde = ldq_phys(cs->as, pde_addr);
628 if (!(pde & PG_PRESENT_MASK)) {
631 if (pde & rsvd_mask) {
634 ptep &= pde ^ PG_NX_MASK;
635 if (pde & PG_PSE_MASK) {
637 page_size = 2048 * 1024;
640 goto do_check_protect;
643 if (!(pde & PG_ACCESSED_MASK)) {
644 pde |= PG_ACCESSED_MASK;
645 stl_phys_notdirty(cs->as, pde_addr, pde);
647 pte_addr = ((pde & PG_ADDRESS_MASK) + (((addr >> 12) & 0x1ff) << 3)) &
649 pte = ldq_phys(cs->as, pte_addr);
650 if (!(pte & PG_PRESENT_MASK)) {
653 if (pte & rsvd_mask) {
656 /* combine pde and pte nx, user and rw protections */
657 ptep &= pte ^ PG_NX_MASK;
662 /* page directory entry */
663 pde_addr = ((env->cr[3] & ~0xfff) + ((addr >> 20) & 0xffc)) &
665 pde = ldl_phys(cs->as, pde_addr);
666 if (!(pde & PG_PRESENT_MASK)) {
669 ptep = pde | PG_NX_MASK;
671 /* if PSE bit is set, then we use a 4MB page */
672 if ((pde & PG_PSE_MASK) && (env->cr[4] & CR4_PSE_MASK)) {
673 page_size = 4096 * 1024;
676 /* Bits 20-13 provide bits 39-32 of the address, bit 21 is reserved.
677 * Leave bits 20-13 in place for setting accessed/dirty bits below.
679 pte = pde | ((pde & 0x1fe000) << (32 - 13));
680 rsvd_mask = 0x200000;
681 goto do_check_protect_pse36;
684 if (!(pde & PG_ACCESSED_MASK)) {
685 pde |= PG_ACCESSED_MASK;
686 stl_phys_notdirty(cs->as, pde_addr, pde);
689 /* page directory entry */
690 pte_addr = ((pde & ~0xfff) + ((addr >> 10) & 0xffc)) &
692 pte = ldl_phys(cs->as, pte_addr);
693 if (!(pte & PG_PRESENT_MASK)) {
696 /* combine pde and pte user and rw protections */
697 ptep &= pte | PG_NX_MASK;
703 rsvd_mask |= (page_size - 1) & PG_ADDRESS_MASK & ~PG_PSE_PAT_MASK;
704 do_check_protect_pse36:
705 if (pte & rsvd_mask) {
709 if ((ptep & PG_NX_MASK) && is_write1 == 2) {
710 goto do_fault_protect;
714 if (!(ptep & PG_USER_MASK)) {
715 goto do_fault_protect;
717 if (is_write && !(ptep & PG_RW_MASK)) {
718 goto do_fault_protect;
723 if (is_write1 != 2 && (ptep & PG_USER_MASK)) {
724 goto do_fault_protect;
727 case MMU_KNOSMAP_IDX:
728 if (is_write1 == 2 && (env->cr[4] & CR4_SMEP_MASK) &&
729 (ptep & PG_USER_MASK)) {
730 goto do_fault_protect;
732 if ((env->cr[0] & CR0_WP_MASK) &&
733 is_write && !(ptep & PG_RW_MASK)) {
734 goto do_fault_protect;
738 default: /* cannot happen */
741 is_dirty = is_write && !(pte & PG_DIRTY_MASK);
742 if (!(pte & PG_ACCESSED_MASK) || is_dirty) {
743 pte |= PG_ACCESSED_MASK;
745 pte |= PG_DIRTY_MASK;
747 stl_phys_notdirty(cs->as, pte_addr, pte);
750 /* the page can be put in the TLB */
752 if (!(ptep & PG_NX_MASK) &&
753 (mmu_idx == MMU_USER_IDX ||
754 !((env->cr[4] & CR4_SMEP_MASK) && (ptep & PG_USER_MASK)))) {
757 if (pte & PG_DIRTY_MASK) {
758 /* only set write access if already dirty... otherwise wait
761 if (ptep & PG_RW_MASK)
764 if (!(env->cr[0] & CR0_WP_MASK) ||
770 pte = pte & env->a20_mask;
772 /* align to page_size */
773 pte &= PG_ADDRESS_MASK & ~(page_size - 1);
775 /* Even if 4MB pages, we map only one 4KB page in the cache to
776 avoid filling it too fast */
777 vaddr = addr & TARGET_PAGE_MASK;
778 page_offset = vaddr & (page_size - 1);
779 paddr = pte + page_offset;
781 tlb_set_page(cs, vaddr, paddr, prot, mmu_idx, page_size);
784 error_code |= PG_ERROR_RSVD_MASK;
786 error_code |= PG_ERROR_P_MASK;
788 error_code |= (is_write << PG_ERROR_W_BIT);
790 error_code |= PG_ERROR_U_MASK;
791 if (is_write1 == 2 &&
792 (((env->efer & MSR_EFER_NXE) &&
793 (env->cr[4] & CR4_PAE_MASK)) ||
794 (env->cr[4] & CR4_SMEP_MASK)))
795 error_code |= PG_ERROR_I_D_MASK;
796 if (env->intercept_exceptions & (1 << EXCP0E_PAGE)) {
797 /* cr2 is not modified in case of exceptions */
799 env->vm_vmcb + offsetof(struct vmcb, control.exit_info_2),
804 env->error_code = error_code;
805 cs->exception_index = EXCP0E_PAGE;
809 hwaddr x86_cpu_get_phys_page_debug(CPUState *cs, vaddr addr)
811 X86CPU *cpu = X86_CPU(cs);
812 CPUX86State *env = &cpu->env;
813 target_ulong pde_addr, pte_addr;
815 uint32_t page_offset;
818 if (!(env->cr[0] & CR0_PG_MASK)) {
819 pte = addr & env->a20_mask;
821 } else if (env->cr[4] & CR4_PAE_MASK) {
822 target_ulong pdpe_addr;
826 if (env->hflags & HF_LMA_MASK) {
827 uint64_t pml4e_addr, pml4e;
830 /* test virtual address sign extension */
831 sext = (int64_t)addr >> 47;
832 if (sext != 0 && sext != -1) {
835 pml4e_addr = ((env->cr[3] & ~0xfff) + (((addr >> 39) & 0x1ff) << 3)) &
837 pml4e = ldq_phys(cs->as, pml4e_addr);
838 if (!(pml4e & PG_PRESENT_MASK)) {
841 pdpe_addr = ((pml4e & PG_ADDRESS_MASK) +
842 (((addr >> 30) & 0x1ff) << 3)) & env->a20_mask;
843 pdpe = ldq_phys(cs->as, pdpe_addr);
844 if (!(pdpe & PG_PRESENT_MASK)) {
847 if (pdpe & PG_PSE_MASK) {
848 page_size = 1024 * 1024 * 1024;
856 pdpe_addr = ((env->cr[3] & ~0x1f) + ((addr >> 27) & 0x18)) &
858 pdpe = ldq_phys(cs->as, pdpe_addr);
859 if (!(pdpe & PG_PRESENT_MASK))
863 pde_addr = ((pdpe & PG_ADDRESS_MASK) +
864 (((addr >> 21) & 0x1ff) << 3)) & env->a20_mask;
865 pde = ldq_phys(cs->as, pde_addr);
866 if (!(pde & PG_PRESENT_MASK)) {
869 if (pde & PG_PSE_MASK) {
871 page_size = 2048 * 1024;
875 pte_addr = ((pde & PG_ADDRESS_MASK) +
876 (((addr >> 12) & 0x1ff) << 3)) & env->a20_mask;
878 pte = ldq_phys(cs->as, pte_addr);
880 if (!(pte & PG_PRESENT_MASK)) {
886 /* page directory entry */
887 pde_addr = ((env->cr[3] & ~0xfff) + ((addr >> 20) & 0xffc)) & env->a20_mask;
888 pde = ldl_phys(cs->as, pde_addr);
889 if (!(pde & PG_PRESENT_MASK))
891 if ((pde & PG_PSE_MASK) && (env->cr[4] & CR4_PSE_MASK)) {
892 pte = pde | ((pde & 0x1fe000) << (32 - 13));
893 page_size = 4096 * 1024;
895 /* page directory entry */
896 pte_addr = ((pde & ~0xfff) + ((addr >> 10) & 0xffc)) & env->a20_mask;
897 pte = ldl_phys(cs->as, pte_addr);
898 if (!(pte & PG_PRESENT_MASK)) {
903 pte = pte & env->a20_mask;
909 pte &= PG_ADDRESS_MASK & ~(page_size - 1);
910 page_offset = (addr & TARGET_PAGE_MASK) & (page_size - 1);
911 return pte | page_offset;
914 void hw_breakpoint_insert(CPUX86State *env, int index)
916 CPUState *cs = CPU(x86_env_get_cpu(env));
917 int type = 0, err = 0;
919 switch (hw_breakpoint_type(env->dr[7], index)) {
920 case DR7_TYPE_BP_INST:
921 if (hw_breakpoint_enabled(env->dr[7], index)) {
922 err = cpu_breakpoint_insert(cs, env->dr[index], BP_CPU,
923 &env->cpu_breakpoint[index]);
926 case DR7_TYPE_DATA_WR:
927 type = BP_CPU | BP_MEM_WRITE;
930 /* No support for I/O watchpoints yet */
932 case DR7_TYPE_DATA_RW:
933 type = BP_CPU | BP_MEM_ACCESS;
938 err = cpu_watchpoint_insert(cs, env->dr[index],
939 hw_breakpoint_len(env->dr[7], index),
940 type, &env->cpu_watchpoint[index]);
944 env->cpu_breakpoint[index] = NULL;
948 void hw_breakpoint_remove(CPUX86State *env, int index)
952 if (!env->cpu_breakpoint[index]) {
955 cs = CPU(x86_env_get_cpu(env));
956 switch (hw_breakpoint_type(env->dr[7], index)) {
957 case DR7_TYPE_BP_INST:
958 if (hw_breakpoint_enabled(env->dr[7], index)) {
959 cpu_breakpoint_remove_by_ref(cs, env->cpu_breakpoint[index]);
962 case DR7_TYPE_DATA_WR:
963 case DR7_TYPE_DATA_RW:
964 cpu_watchpoint_remove_by_ref(cs, env->cpu_watchpoint[index]);
967 /* No support for I/O watchpoints yet */
972 bool check_hw_breakpoints(CPUX86State *env, bool force_dr6_update)
976 bool hit_enabled = false;
978 dr6 = env->dr[6] & ~0xf;
979 for (reg = 0; reg < DR7_MAX_BP; reg++) {
980 bool bp_match = false;
981 bool wp_match = false;
983 switch (hw_breakpoint_type(env->dr[7], reg)) {
984 case DR7_TYPE_BP_INST:
985 if (env->dr[reg] == env->eip) {
989 case DR7_TYPE_DATA_WR:
990 case DR7_TYPE_DATA_RW:
991 if (env->cpu_watchpoint[reg] &&
992 env->cpu_watchpoint[reg]->flags & BP_WATCHPOINT_HIT) {
999 if (bp_match || wp_match) {
1001 if (hw_breakpoint_enabled(env->dr[7], reg)) {
1007 if (hit_enabled || force_dr6_update) {
1014 void breakpoint_handler(CPUX86State *env)
1016 CPUState *cs = CPU(x86_env_get_cpu(env));
1019 if (cs->watchpoint_hit) {
1020 if (cs->watchpoint_hit->flags & BP_CPU) {
1021 cs->watchpoint_hit = NULL;
1022 if (check_hw_breakpoints(env, false)) {
1023 raise_exception(env, EXCP01_DB);
1025 cpu_resume_from_signal(cs, NULL);
1029 QTAILQ_FOREACH(bp, &cs->breakpoints, entry) {
1030 if (bp->pc == env->eip) {
1031 if (bp->flags & BP_CPU) {
1032 check_hw_breakpoints(env, true);
1033 raise_exception(env, EXCP01_DB);
1041 typedef struct MCEInjectionParams {
1046 uint64_t mcg_status;
1050 } MCEInjectionParams;
1052 static void do_inject_x86_mce(void *data)
1054 MCEInjectionParams *params = data;
1055 CPUX86State *cenv = ¶ms->cpu->env;
1056 CPUState *cpu = CPU(params->cpu);
1057 uint64_t *banks = cenv->mce_banks + 4 * params->bank;
1059 cpu_synchronize_state(cpu);
1062 * If there is an MCE exception being processed, ignore this SRAO MCE
1063 * unless unconditional injection was requested.
1065 if (!(params->flags & MCE_INJECT_UNCOND_AO)
1066 && !(params->status & MCI_STATUS_AR)
1067 && (cenv->mcg_status & MCG_STATUS_MCIP)) {
1071 if (params->status & MCI_STATUS_UC) {
1073 * if MSR_MCG_CTL is not all 1s, the uncorrected error
1074 * reporting is disabled
1076 if ((cenv->mcg_cap & MCG_CTL_P) && cenv->mcg_ctl != ~(uint64_t)0) {
1077 monitor_printf(params->mon,
1078 "CPU %d: Uncorrected error reporting disabled\n",
1084 * if MSR_MCi_CTL is not all 1s, the uncorrected error
1085 * reporting is disabled for the bank
1087 if (banks[0] != ~(uint64_t)0) {
1088 monitor_printf(params->mon,
1089 "CPU %d: Uncorrected error reporting disabled for"
1091 cpu->cpu_index, params->bank);
1095 if ((cenv->mcg_status & MCG_STATUS_MCIP) ||
1096 !(cenv->cr[4] & CR4_MCE_MASK)) {
1097 monitor_printf(params->mon,
1098 "CPU %d: Previous MCE still in progress, raising"
1101 qemu_log_mask(CPU_LOG_RESET, "Triple fault\n");
1102 qemu_system_reset_request();
1105 if (banks[1] & MCI_STATUS_VAL) {
1106 params->status |= MCI_STATUS_OVER;
1108 banks[2] = params->addr;
1109 banks[3] = params->misc;
1110 cenv->mcg_status = params->mcg_status;
1111 banks[1] = params->status;
1112 cpu_interrupt(cpu, CPU_INTERRUPT_MCE);
1113 } else if (!(banks[1] & MCI_STATUS_VAL)
1114 || !(banks[1] & MCI_STATUS_UC)) {
1115 if (banks[1] & MCI_STATUS_VAL) {
1116 params->status |= MCI_STATUS_OVER;
1118 banks[2] = params->addr;
1119 banks[3] = params->misc;
1120 banks[1] = params->status;
1122 banks[1] |= MCI_STATUS_OVER;
1126 void cpu_x86_inject_mce(Monitor *mon, X86CPU *cpu, int bank,
1127 uint64_t status, uint64_t mcg_status, uint64_t addr,
1128 uint64_t misc, int flags)
1130 CPUState *cs = CPU(cpu);
1131 CPUX86State *cenv = &cpu->env;
1132 MCEInjectionParams params = {
1137 .mcg_status = mcg_status,
1142 unsigned bank_num = cenv->mcg_cap & 0xff;
1144 if (!cenv->mcg_cap) {
1145 monitor_printf(mon, "MCE injection not supported\n");
1148 if (bank >= bank_num) {
1149 monitor_printf(mon, "Invalid MCE bank number\n");
1152 if (!(status & MCI_STATUS_VAL)) {
1153 monitor_printf(mon, "Invalid MCE status code\n");
1156 if ((flags & MCE_INJECT_BROADCAST)
1157 && !cpu_x86_support_mca_broadcast(cenv)) {
1158 monitor_printf(mon, "Guest CPU does not support MCA broadcast\n");
1162 run_on_cpu(cs, do_inject_x86_mce, ¶ms);
1163 if (flags & MCE_INJECT_BROADCAST) {
1167 params.status = MCI_STATUS_VAL | MCI_STATUS_UC;
1168 params.mcg_status = MCG_STATUS_MCIP | MCG_STATUS_RIPV;
1171 CPU_FOREACH(other_cs) {
1172 if (other_cs == cs) {
1175 params.cpu = X86_CPU(other_cs);
1176 run_on_cpu(other_cs, do_inject_x86_mce, ¶ms);
1181 void cpu_report_tpr_access(CPUX86State *env, TPRAccess access)
1183 X86CPU *cpu = x86_env_get_cpu(env);
1184 CPUState *cs = CPU(cpu);
1186 if (kvm_enabled()) {
1187 env->tpr_access_type = access;
1189 cpu_interrupt(cs, CPU_INTERRUPT_TPR);
1191 cpu_restore_state(cs, cs->mem_io_pc);
1193 apic_handle_tpr_access_report(cpu->apic_state, env->eip, access);
1196 #endif /* !CONFIG_USER_ONLY */
1198 int cpu_x86_get_descr_debug(CPUX86State *env, unsigned int selector,
1199 target_ulong *base, unsigned int *limit,
1200 unsigned int *flags)
1202 X86CPU *cpu = x86_env_get_cpu(env);
1203 CPUState *cs = CPU(cpu);
1213 index = selector & ~7;
1214 ptr = dt->base + index;
1215 if ((index + 7) > dt->limit
1216 || cpu_memory_rw_debug(cs, ptr, (uint8_t *)&e1, sizeof(e1), 0) != 0
1217 || cpu_memory_rw_debug(cs, ptr+4, (uint8_t *)&e2, sizeof(e2), 0) != 0)
1220 *base = ((e1 >> 16) | ((e2 & 0xff) << 16) | (e2 & 0xff000000));
1221 *limit = (e1 & 0xffff) | (e2 & 0x000f0000);
1222 if (e2 & DESC_G_MASK)
1223 *limit = (*limit << 12) | 0xfff;
1229 #if !defined(CONFIG_USER_ONLY)
1230 void do_cpu_init(X86CPU *cpu)
1232 CPUState *cs = CPU(cpu);
1233 CPUX86State *env = &cpu->env;
1234 CPUX86State *save = g_new(CPUX86State, 1);
1235 int sipi = cs->interrupt_request & CPU_INTERRUPT_SIPI;
1240 cs->interrupt_request = sipi;
1241 memcpy(&env->start_init_save, &save->start_init_save,
1242 offsetof(CPUX86State, end_init_save) -
1243 offsetof(CPUX86State, start_init_save));
1246 if (kvm_enabled()) {
1247 kvm_arch_do_init_vcpu(cpu);
1249 apic_init_reset(cpu->apic_state);
1252 void do_cpu_sipi(X86CPU *cpu)
1254 apic_sipi(cpu->apic_state);
1257 void do_cpu_init(X86CPU *cpu)
1260 void do_cpu_sipi(X86CPU *cpu)