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"
22 #ifndef CONFIG_USER_ONLY
23 #include "sysemu/sysemu.h"
24 #include "monitor/monitor.h"
29 static void cpu_x86_version(CPUX86State *env, int *family, int *model)
31 int cpuver = env->cpuid_version;
33 if (family == NULL || model == NULL) {
37 *family = (cpuver >> 8) & 0x0f;
38 *model = ((cpuver >> 12) & 0xf0) + ((cpuver >> 4) & 0x0f);
41 /* Broadcast MCA signal for processor version 06H_EH and above */
42 int cpu_x86_support_mca_broadcast(CPUX86State *env)
47 cpu_x86_version(env, &family, &model);
48 if ((family == 6 && model >= 14) || family > 6) {
55 /***********************************************************/
58 static const char *cc_op_str[CC_OP_NB] = {
125 cpu_x86_dump_seg_cache(CPUX86State *env, FILE *f, fprintf_function cpu_fprintf,
126 const char *name, struct SegmentCache *sc)
129 if (env->hflags & HF_CS64_MASK) {
130 cpu_fprintf(f, "%-3s=%04x %016" PRIx64 " %08x %08x", name,
131 sc->selector, sc->base, sc->limit, sc->flags & 0x00ffff00);
135 cpu_fprintf(f, "%-3s=%04x %08x %08x %08x", name, sc->selector,
136 (uint32_t)sc->base, sc->limit, sc->flags & 0x00ffff00);
139 if (!(env->hflags & HF_PE_MASK) || !(sc->flags & DESC_P_MASK))
142 cpu_fprintf(f, " DPL=%d ", (sc->flags & DESC_DPL_MASK) >> DESC_DPL_SHIFT);
143 if (sc->flags & DESC_S_MASK) {
144 if (sc->flags & DESC_CS_MASK) {
145 cpu_fprintf(f, (sc->flags & DESC_L_MASK) ? "CS64" :
146 ((sc->flags & DESC_B_MASK) ? "CS32" : "CS16"));
147 cpu_fprintf(f, " [%c%c", (sc->flags & DESC_C_MASK) ? 'C' : '-',
148 (sc->flags & DESC_R_MASK) ? 'R' : '-');
150 cpu_fprintf(f, (sc->flags & DESC_B_MASK) ? "DS " : "DS16");
151 cpu_fprintf(f, " [%c%c", (sc->flags & DESC_E_MASK) ? 'E' : '-',
152 (sc->flags & DESC_W_MASK) ? 'W' : '-');
154 cpu_fprintf(f, "%c]", (sc->flags & DESC_A_MASK) ? 'A' : '-');
156 static const char *sys_type_name[2][16] = {
158 "Reserved", "TSS16-avl", "LDT", "TSS16-busy",
159 "CallGate16", "TaskGate", "IntGate16", "TrapGate16",
160 "Reserved", "TSS32-avl", "Reserved", "TSS32-busy",
161 "CallGate32", "Reserved", "IntGate32", "TrapGate32"
164 "<hiword>", "Reserved", "LDT", "Reserved", "Reserved",
165 "Reserved", "Reserved", "Reserved", "Reserved",
166 "TSS64-avl", "Reserved", "TSS64-busy", "CallGate64",
167 "Reserved", "IntGate64", "TrapGate64"
171 sys_type_name[(env->hflags & HF_LMA_MASK) ? 1 : 0]
172 [(sc->flags & DESC_TYPE_MASK)
173 >> DESC_TYPE_SHIFT]);
176 cpu_fprintf(f, "\n");
179 #define DUMP_CODE_BYTES_TOTAL 50
180 #define DUMP_CODE_BYTES_BACKWARD 20
182 void cpu_dump_state(CPUX86State *env, FILE *f, fprintf_function cpu_fprintf,
185 CPUState *cs = CPU(x86_env_get_cpu(env));
188 static const char *seg_name[6] = { "ES", "CS", "SS", "DS", "FS", "GS" };
190 cpu_synchronize_state(env);
192 eflags = cpu_compute_eflags(env);
194 if (env->hflags & HF_CS64_MASK) {
196 "RAX=%016" PRIx64 " RBX=%016" PRIx64 " RCX=%016" PRIx64 " RDX=%016" PRIx64 "\n"
197 "RSI=%016" PRIx64 " RDI=%016" PRIx64 " RBP=%016" PRIx64 " RSP=%016" PRIx64 "\n"
198 "R8 =%016" PRIx64 " R9 =%016" PRIx64 " R10=%016" PRIx64 " R11=%016" PRIx64 "\n"
199 "R12=%016" PRIx64 " R13=%016" PRIx64 " R14=%016" PRIx64 " R15=%016" PRIx64 "\n"
200 "RIP=%016" PRIx64 " RFL=%08x [%c%c%c%c%c%c%c] CPL=%d II=%d A20=%d SMM=%d HLT=%d\n",
218 eflags & DF_MASK ? 'D' : '-',
219 eflags & CC_O ? 'O' : '-',
220 eflags & CC_S ? 'S' : '-',
221 eflags & CC_Z ? 'Z' : '-',
222 eflags & CC_A ? 'A' : '-',
223 eflags & CC_P ? 'P' : '-',
224 eflags & CC_C ? 'C' : '-',
225 env->hflags & HF_CPL_MASK,
226 (env->hflags >> HF_INHIBIT_IRQ_SHIFT) & 1,
227 (env->a20_mask >> 20) & 1,
228 (env->hflags >> HF_SMM_SHIFT) & 1,
233 cpu_fprintf(f, "EAX=%08x EBX=%08x ECX=%08x EDX=%08x\n"
234 "ESI=%08x EDI=%08x EBP=%08x ESP=%08x\n"
235 "EIP=%08x EFL=%08x [%c%c%c%c%c%c%c] CPL=%d II=%d A20=%d SMM=%d HLT=%d\n",
236 (uint32_t)env->regs[R_EAX],
237 (uint32_t)env->regs[R_EBX],
238 (uint32_t)env->regs[R_ECX],
239 (uint32_t)env->regs[R_EDX],
240 (uint32_t)env->regs[R_ESI],
241 (uint32_t)env->regs[R_EDI],
242 (uint32_t)env->regs[R_EBP],
243 (uint32_t)env->regs[R_ESP],
244 (uint32_t)env->eip, eflags,
245 eflags & DF_MASK ? 'D' : '-',
246 eflags & CC_O ? 'O' : '-',
247 eflags & CC_S ? 'S' : '-',
248 eflags & CC_Z ? 'Z' : '-',
249 eflags & CC_A ? 'A' : '-',
250 eflags & CC_P ? 'P' : '-',
251 eflags & CC_C ? 'C' : '-',
252 env->hflags & HF_CPL_MASK,
253 (env->hflags >> HF_INHIBIT_IRQ_SHIFT) & 1,
254 (env->a20_mask >> 20) & 1,
255 (env->hflags >> HF_SMM_SHIFT) & 1,
259 for(i = 0; i < 6; i++) {
260 cpu_x86_dump_seg_cache(env, f, cpu_fprintf, seg_name[i],
263 cpu_x86_dump_seg_cache(env, f, cpu_fprintf, "LDT", &env->ldt);
264 cpu_x86_dump_seg_cache(env, f, cpu_fprintf, "TR", &env->tr);
267 if (env->hflags & HF_LMA_MASK) {
268 cpu_fprintf(f, "GDT= %016" PRIx64 " %08x\n",
269 env->gdt.base, env->gdt.limit);
270 cpu_fprintf(f, "IDT= %016" PRIx64 " %08x\n",
271 env->idt.base, env->idt.limit);
272 cpu_fprintf(f, "CR0=%08x CR2=%016" PRIx64 " CR3=%016" PRIx64 " CR4=%08x\n",
273 (uint32_t)env->cr[0],
276 (uint32_t)env->cr[4]);
277 for(i = 0; i < 4; i++)
278 cpu_fprintf(f, "DR%d=%016" PRIx64 " ", i, env->dr[i]);
279 cpu_fprintf(f, "\nDR6=%016" PRIx64 " DR7=%016" PRIx64 "\n",
280 env->dr[6], env->dr[7]);
284 cpu_fprintf(f, "GDT= %08x %08x\n",
285 (uint32_t)env->gdt.base, env->gdt.limit);
286 cpu_fprintf(f, "IDT= %08x %08x\n",
287 (uint32_t)env->idt.base, env->idt.limit);
288 cpu_fprintf(f, "CR0=%08x CR2=%08x CR3=%08x CR4=%08x\n",
289 (uint32_t)env->cr[0],
290 (uint32_t)env->cr[2],
291 (uint32_t)env->cr[3],
292 (uint32_t)env->cr[4]);
293 for(i = 0; i < 4; i++) {
294 cpu_fprintf(f, "DR%d=" TARGET_FMT_lx " ", i, env->dr[i]);
296 cpu_fprintf(f, "\nDR6=" TARGET_FMT_lx " DR7=" TARGET_FMT_lx "\n",
297 env->dr[6], env->dr[7]);
299 if (flags & CPU_DUMP_CCOP) {
300 if ((unsigned)env->cc_op < CC_OP_NB)
301 snprintf(cc_op_name, sizeof(cc_op_name), "%s", cc_op_str[env->cc_op]);
303 snprintf(cc_op_name, sizeof(cc_op_name), "[%d]", env->cc_op);
305 if (env->hflags & HF_CS64_MASK) {
306 cpu_fprintf(f, "CCS=%016" PRIx64 " CCD=%016" PRIx64 " CCO=%-8s\n",
307 env->cc_src, env->cc_dst,
312 cpu_fprintf(f, "CCS=%08x CCD=%08x CCO=%-8s\n",
313 (uint32_t)env->cc_src, (uint32_t)env->cc_dst,
317 cpu_fprintf(f, "EFER=%016" PRIx64 "\n", env->efer);
318 if (flags & CPU_DUMP_FPU) {
321 for(i = 0; i < 8; i++) {
322 fptag |= ((!env->fptags[i]) << i);
324 cpu_fprintf(f, "FCW=%04x FSW=%04x [ST=%d] FTW=%02x MXCSR=%08x\n",
326 (env->fpus & ~0x3800) | (env->fpstt & 0x7) << 11,
332 u.d = env->fpregs[i].d;
333 cpu_fprintf(f, "FPR%d=%016" PRIx64 " %04x",
334 i, u.l.lower, u.l.upper);
336 cpu_fprintf(f, "\n");
340 if (env->hflags & HF_CS64_MASK)
345 cpu_fprintf(f, "XMM%02d=%08x%08x%08x%08x",
347 env->xmm_regs[i].XMM_L(3),
348 env->xmm_regs[i].XMM_L(2),
349 env->xmm_regs[i].XMM_L(1),
350 env->xmm_regs[i].XMM_L(0));
352 cpu_fprintf(f, "\n");
357 if (flags & CPU_DUMP_CODE) {
358 target_ulong base = env->segs[R_CS].base + env->eip;
359 target_ulong offs = MIN(env->eip, DUMP_CODE_BYTES_BACKWARD);
363 cpu_fprintf(f, "Code=");
364 for (i = 0; i < DUMP_CODE_BYTES_TOTAL; i++) {
365 if (cpu_memory_rw_debug(env, base - offs + i, &code, 1, 0) == 0) {
366 snprintf(codestr, sizeof(codestr), "%02x", code);
368 snprintf(codestr, sizeof(codestr), "??");
370 cpu_fprintf(f, "%s%s%s%s", i > 0 ? " " : "",
371 i == offs ? "<" : "", codestr, i == offs ? ">" : "");
373 cpu_fprintf(f, "\n");
377 /***********************************************************/
379 /* XXX: add PGE support */
381 void x86_cpu_set_a20(X86CPU *cpu, int a20_state)
383 CPUX86State *env = &cpu->env;
385 a20_state = (a20_state != 0);
386 if (a20_state != ((env->a20_mask >> 20) & 1)) {
387 #if defined(DEBUG_MMU)
388 printf("A20 update: a20=%d\n", a20_state);
390 /* if the cpu is currently executing code, we must unlink it and
391 all the potentially executing TB */
392 cpu_interrupt(CPU(cpu), CPU_INTERRUPT_EXITTB);
394 /* when a20 is changed, all the MMU mappings are invalid, so
395 we must flush everything */
397 env->a20_mask = ~(1 << 20) | (a20_state << 20);
401 void cpu_x86_update_cr0(CPUX86State *env, uint32_t new_cr0)
405 #if defined(DEBUG_MMU)
406 printf("CR0 update: CR0=0x%08x\n", new_cr0);
408 if ((new_cr0 & (CR0_PG_MASK | CR0_WP_MASK | CR0_PE_MASK)) !=
409 (env->cr[0] & (CR0_PG_MASK | CR0_WP_MASK | CR0_PE_MASK))) {
414 if (!(env->cr[0] & CR0_PG_MASK) && (new_cr0 & CR0_PG_MASK) &&
415 (env->efer & MSR_EFER_LME)) {
416 /* enter in long mode */
417 /* XXX: generate an exception */
418 if (!(env->cr[4] & CR4_PAE_MASK))
420 env->efer |= MSR_EFER_LMA;
421 env->hflags |= HF_LMA_MASK;
422 } else if ((env->cr[0] & CR0_PG_MASK) && !(new_cr0 & CR0_PG_MASK) &&
423 (env->efer & MSR_EFER_LMA)) {
425 env->efer &= ~MSR_EFER_LMA;
426 env->hflags &= ~(HF_LMA_MASK | HF_CS64_MASK);
427 env->eip &= 0xffffffff;
430 env->cr[0] = new_cr0 | CR0_ET_MASK;
432 /* update PE flag in hidden flags */
433 pe_state = (env->cr[0] & CR0_PE_MASK);
434 env->hflags = (env->hflags & ~HF_PE_MASK) | (pe_state << HF_PE_SHIFT);
435 /* ensure that ADDSEG is always set in real mode */
436 env->hflags |= ((pe_state ^ 1) << HF_ADDSEG_SHIFT);
437 /* update FPU flags */
438 env->hflags = (env->hflags & ~(HF_MP_MASK | HF_EM_MASK | HF_TS_MASK)) |
439 ((new_cr0 << (HF_MP_SHIFT - 1)) & (HF_MP_MASK | HF_EM_MASK | HF_TS_MASK));
442 /* XXX: in legacy PAE mode, generate a GPF if reserved bits are set in
444 void cpu_x86_update_cr3(CPUX86State *env, target_ulong new_cr3)
446 env->cr[3] = new_cr3;
447 if (env->cr[0] & CR0_PG_MASK) {
448 #if defined(DEBUG_MMU)
449 printf("CR3 update: CR3=" TARGET_FMT_lx "\n", new_cr3);
455 void cpu_x86_update_cr4(CPUX86State *env, uint32_t new_cr4)
457 #if defined(DEBUG_MMU)
458 printf("CR4 update: CR4=%08x\n", (uint32_t)env->cr[4]);
460 if ((new_cr4 ^ env->cr[4]) &
461 (CR4_PGE_MASK | CR4_PAE_MASK | CR4_PSE_MASK |
462 CR4_SMEP_MASK | CR4_SMAP_MASK)) {
466 if (!(env->features[FEAT_1_EDX] & CPUID_SSE)) {
467 new_cr4 &= ~CR4_OSFXSR_MASK;
469 env->hflags &= ~HF_OSFXSR_MASK;
470 if (new_cr4 & CR4_OSFXSR_MASK) {
471 env->hflags |= HF_OSFXSR_MASK;
474 if (!(env->features[FEAT_7_0_EBX] & CPUID_7_0_EBX_SMAP)) {
475 new_cr4 &= ~CR4_SMAP_MASK;
477 env->hflags &= ~HF_SMAP_MASK;
478 if (new_cr4 & CR4_SMAP_MASK) {
479 env->hflags |= HF_SMAP_MASK;
482 env->cr[4] = new_cr4;
485 #if defined(CONFIG_USER_ONLY)
487 int cpu_x86_handle_mmu_fault(CPUX86State *env, target_ulong addr,
488 int is_write, int mmu_idx)
490 /* user mode only emulation */
493 env->error_code = (is_write << PG_ERROR_W_BIT);
494 env->error_code |= PG_ERROR_U_MASK;
495 env->exception_index = EXCP0E_PAGE;
501 /* XXX: This value should match the one returned by CPUID
503 # if defined(TARGET_X86_64)
504 # define PHYS_ADDR_MASK 0xfffffff000LL
506 # define PHYS_ADDR_MASK 0xffffff000LL
510 -1 = cannot handle fault
511 0 = nothing more to do
512 1 = generate PF fault
514 int cpu_x86_handle_mmu_fault(CPUX86State *env, target_ulong addr,
515 int is_write1, int mmu_idx)
518 target_ulong pde_addr, pte_addr;
519 int error_code, is_dirty, prot, page_size, is_write, is_user;
521 uint32_t page_offset;
522 target_ulong vaddr, virt_addr;
524 is_user = mmu_idx == MMU_USER_IDX;
525 #if defined(DEBUG_MMU)
526 printf("MMU fault: addr=" TARGET_FMT_lx " w=%d u=%d eip=" TARGET_FMT_lx "\n",
527 addr, is_write1, is_user, env->eip);
529 is_write = is_write1 & 1;
531 if (!(env->cr[0] & CR0_PG_MASK)) {
533 virt_addr = addr & TARGET_PAGE_MASK;
534 prot = PAGE_READ | PAGE_WRITE | PAGE_EXEC;
539 if (env->cr[4] & CR4_PAE_MASK) {
541 target_ulong pdpe_addr;
544 if (env->hflags & HF_LMA_MASK) {
545 uint64_t pml4e_addr, pml4e;
548 /* test virtual address sign extension */
549 sext = (int64_t)addr >> 47;
550 if (sext != 0 && sext != -1) {
552 env->exception_index = EXCP0D_GPF;
556 pml4e_addr = ((env->cr[3] & ~0xfff) + (((addr >> 39) & 0x1ff) << 3)) &
558 pml4e = ldq_phys(pml4e_addr);
559 if (!(pml4e & PG_PRESENT_MASK)) {
563 if (!(env->efer & MSR_EFER_NXE) && (pml4e & PG_NX_MASK)) {
564 error_code = PG_ERROR_RSVD_MASK;
567 if (!(pml4e & PG_ACCESSED_MASK)) {
568 pml4e |= PG_ACCESSED_MASK;
569 stl_phys_notdirty(pml4e_addr, pml4e);
571 ptep = pml4e ^ PG_NX_MASK;
572 pdpe_addr = ((pml4e & PHYS_ADDR_MASK) + (((addr >> 30) & 0x1ff) << 3)) &
574 pdpe = ldq_phys(pdpe_addr);
575 if (!(pdpe & PG_PRESENT_MASK)) {
579 if (!(env->efer & MSR_EFER_NXE) && (pdpe & PG_NX_MASK)) {
580 error_code = PG_ERROR_RSVD_MASK;
583 ptep &= pdpe ^ PG_NX_MASK;
584 if (!(pdpe & PG_ACCESSED_MASK)) {
585 pdpe |= PG_ACCESSED_MASK;
586 stl_phys_notdirty(pdpe_addr, pdpe);
591 /* XXX: load them when cr3 is loaded ? */
592 pdpe_addr = ((env->cr[3] & ~0x1f) + ((addr >> 27) & 0x18)) &
594 pdpe = ldq_phys(pdpe_addr);
595 if (!(pdpe & PG_PRESENT_MASK)) {
599 ptep = PG_NX_MASK | PG_USER_MASK | PG_RW_MASK;
602 pde_addr = ((pdpe & PHYS_ADDR_MASK) + (((addr >> 21) & 0x1ff) << 3)) &
604 pde = ldq_phys(pde_addr);
605 if (!(pde & PG_PRESENT_MASK)) {
609 if (!(env->efer & MSR_EFER_NXE) && (pde & PG_NX_MASK)) {
610 error_code = PG_ERROR_RSVD_MASK;
613 ptep &= pde ^ PG_NX_MASK;
614 if (pde & PG_PSE_MASK) {
616 page_size = 2048 * 1024;
618 if ((ptep & PG_NX_MASK) && is_write1 == 2) {
619 goto do_fault_protect;
623 if (!(ptep & PG_USER_MASK)) {
624 goto do_fault_protect;
626 if (is_write && !(ptep & PG_RW_MASK)) {
627 goto do_fault_protect;
632 if (is_write1 != 2 && (env->cr[4] & CR4_SMAP_MASK) &&
633 (ptep & PG_USER_MASK)) {
634 goto do_fault_protect;
638 if (is_write1 == 2 && (env->cr[4] & CR4_SMEP_MASK) &&
639 (ptep & PG_USER_MASK)) {
640 goto do_fault_protect;
642 if ((env->cr[0] & CR0_WP_MASK) &&
643 is_write && !(ptep & PG_RW_MASK)) {
644 goto do_fault_protect;
648 default: /* cannot happen */
651 is_dirty = is_write && !(pde & PG_DIRTY_MASK);
652 if (!(pde & PG_ACCESSED_MASK) || is_dirty) {
653 pde |= PG_ACCESSED_MASK;
655 pde |= PG_DIRTY_MASK;
656 stl_phys_notdirty(pde_addr, pde);
658 /* align to page_size */
659 pte = pde & ((PHYS_ADDR_MASK & ~(page_size - 1)) | 0xfff);
660 virt_addr = addr & ~(page_size - 1);
663 if (!(pde & PG_ACCESSED_MASK)) {
664 pde |= PG_ACCESSED_MASK;
665 stl_phys_notdirty(pde_addr, pde);
667 pte_addr = ((pde & PHYS_ADDR_MASK) + (((addr >> 12) & 0x1ff) << 3)) &
669 pte = ldq_phys(pte_addr);
670 if (!(pte & PG_PRESENT_MASK)) {
674 if (!(env->efer & MSR_EFER_NXE) && (pte & PG_NX_MASK)) {
675 error_code = PG_ERROR_RSVD_MASK;
678 /* combine pde and pte nx, user and rw protections */
679 ptep &= pte ^ PG_NX_MASK;
681 if ((ptep & PG_NX_MASK) && is_write1 == 2)
682 goto do_fault_protect;
685 if (!(ptep & PG_USER_MASK)) {
686 goto do_fault_protect;
688 if (is_write && !(ptep & PG_RW_MASK)) {
689 goto do_fault_protect;
694 if (is_write1 != 2 && (env->cr[4] & CR4_SMAP_MASK) &&
695 (ptep & PG_USER_MASK)) {
696 goto do_fault_protect;
700 if (is_write1 == 2 && (env->cr[4] & CR4_SMEP_MASK) &&
701 (ptep & PG_USER_MASK)) {
702 goto do_fault_protect;
704 if ((env->cr[0] & CR0_WP_MASK) &&
705 is_write && !(ptep & PG_RW_MASK)) {
706 goto do_fault_protect;
710 default: /* cannot happen */
713 is_dirty = is_write && !(pte & PG_DIRTY_MASK);
714 if (!(pte & PG_ACCESSED_MASK) || is_dirty) {
715 pte |= PG_ACCESSED_MASK;
717 pte |= PG_DIRTY_MASK;
718 stl_phys_notdirty(pte_addr, pte);
721 virt_addr = addr & ~0xfff;
722 pte = pte & (PHYS_ADDR_MASK | 0xfff);
727 /* page directory entry */
728 pde_addr = ((env->cr[3] & ~0xfff) + ((addr >> 20) & 0xffc)) &
730 pde = ldl_phys(pde_addr);
731 if (!(pde & PG_PRESENT_MASK)) {
735 /* if PSE bit is set, then we use a 4MB page */
736 if ((pde & PG_PSE_MASK) && (env->cr[4] & CR4_PSE_MASK)) {
737 page_size = 4096 * 1024;
740 if (!(pde & PG_USER_MASK)) {
741 goto do_fault_protect;
743 if (is_write && !(pde & PG_RW_MASK)) {
744 goto do_fault_protect;
749 if (is_write1 != 2 && (env->cr[4] & CR4_SMAP_MASK) &&
750 (pde & PG_USER_MASK)) {
751 goto do_fault_protect;
755 if (is_write1 == 2 && (env->cr[4] & CR4_SMEP_MASK) &&
756 (pde & PG_USER_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;
765 default: /* cannot happen */
768 is_dirty = is_write && !(pde & PG_DIRTY_MASK);
769 if (!(pde & PG_ACCESSED_MASK) || is_dirty) {
770 pde |= PG_ACCESSED_MASK;
772 pde |= PG_DIRTY_MASK;
773 stl_phys_notdirty(pde_addr, pde);
776 pte = pde & ~( (page_size - 1) & ~0xfff); /* align to page_size */
778 virt_addr = addr & ~(page_size - 1);
780 if (!(pde & PG_ACCESSED_MASK)) {
781 pde |= PG_ACCESSED_MASK;
782 stl_phys_notdirty(pde_addr, pde);
785 /* page directory entry */
786 pte_addr = ((pde & ~0xfff) + ((addr >> 10) & 0xffc)) &
788 pte = ldl_phys(pte_addr);
789 if (!(pte & PG_PRESENT_MASK)) {
793 /* combine pde and pte user and rw protections */
797 if (!(ptep & PG_USER_MASK)) {
798 goto do_fault_protect;
800 if (is_write && !(ptep & PG_RW_MASK)) {
801 goto do_fault_protect;
806 if (is_write1 != 2 && (env->cr[4] & CR4_SMAP_MASK) &&
807 (ptep & PG_USER_MASK)) {
808 goto do_fault_protect;
812 if (is_write1 == 2 && (env->cr[4] & CR4_SMEP_MASK) &&
813 (ptep & PG_USER_MASK)) {
814 goto do_fault_protect;
816 if ((env->cr[0] & CR0_WP_MASK) &&
817 is_write && !(ptep & PG_RW_MASK)) {
818 goto do_fault_protect;
822 default: /* cannot happen */
825 is_dirty = is_write && !(pte & PG_DIRTY_MASK);
826 if (!(pte & PG_ACCESSED_MASK) || is_dirty) {
827 pte |= PG_ACCESSED_MASK;
829 pte |= PG_DIRTY_MASK;
830 stl_phys_notdirty(pte_addr, pte);
833 virt_addr = addr & ~0xfff;
836 /* the page can be put in the TLB */
838 if (!(ptep & PG_NX_MASK))
840 if (pte & PG_DIRTY_MASK) {
841 /* only set write access if already dirty... otherwise wait
844 if (ptep & PG_RW_MASK)
847 if (!(env->cr[0] & CR0_WP_MASK) ||
853 pte = pte & env->a20_mask;
855 /* Even if 4MB pages, we map only one 4KB page in the cache to
856 avoid filling it too fast */
857 page_offset = (addr & TARGET_PAGE_MASK) & (page_size - 1);
858 paddr = (pte & TARGET_PAGE_MASK) + page_offset;
859 vaddr = virt_addr + page_offset;
861 tlb_set_page(env, vaddr, paddr, prot, mmu_idx, page_size);
864 error_code = PG_ERROR_P_MASK;
866 error_code |= (is_write << PG_ERROR_W_BIT);
868 error_code |= PG_ERROR_U_MASK;
869 if (is_write1 == 2 &&
870 (((env->efer & MSR_EFER_NXE) &&
871 (env->cr[4] & CR4_PAE_MASK)) ||
872 (env->cr[4] & CR4_SMEP_MASK)))
873 error_code |= PG_ERROR_I_D_MASK;
874 if (env->intercept_exceptions & (1 << EXCP0E_PAGE)) {
875 /* cr2 is not modified in case of exceptions */
876 stq_phys(env->vm_vmcb + offsetof(struct vmcb, control.exit_info_2),
881 env->error_code = error_code;
882 env->exception_index = EXCP0E_PAGE;
886 hwaddr cpu_get_phys_page_debug(CPUX86State *env, target_ulong addr)
888 target_ulong pde_addr, pte_addr;
891 uint32_t page_offset;
894 if (env->cr[4] & CR4_PAE_MASK) {
895 target_ulong pdpe_addr;
899 if (env->hflags & HF_LMA_MASK) {
900 uint64_t pml4e_addr, pml4e;
903 /* test virtual address sign extension */
904 sext = (int64_t)addr >> 47;
905 if (sext != 0 && sext != -1)
908 pml4e_addr = ((env->cr[3] & ~0xfff) + (((addr >> 39) & 0x1ff) << 3)) &
910 pml4e = ldq_phys(pml4e_addr);
911 if (!(pml4e & PG_PRESENT_MASK))
914 pdpe_addr = ((pml4e & ~0xfff & ~(PG_NX_MASK | PG_HI_USER_MASK)) +
915 (((addr >> 30) & 0x1ff) << 3)) & env->a20_mask;
916 pdpe = ldq_phys(pdpe_addr);
917 if (!(pdpe & PG_PRESENT_MASK))
922 pdpe_addr = ((env->cr[3] & ~0x1f) + ((addr >> 27) & 0x18)) &
924 pdpe = ldq_phys(pdpe_addr);
925 if (!(pdpe & PG_PRESENT_MASK))
929 pde_addr = ((pdpe & ~0xfff & ~(PG_NX_MASK | PG_HI_USER_MASK)) +
930 (((addr >> 21) & 0x1ff) << 3)) & env->a20_mask;
931 pde = ldq_phys(pde_addr);
932 if (!(pde & PG_PRESENT_MASK)) {
935 if (pde & PG_PSE_MASK) {
937 page_size = 2048 * 1024;
938 pte = pde & ~( (page_size - 1) & ~0xfff); /* align to page_size */
941 pte_addr = ((pde & ~0xfff & ~(PG_NX_MASK | PG_HI_USER_MASK)) +
942 (((addr >> 12) & 0x1ff) << 3)) & env->a20_mask;
944 pte = ldq_phys(pte_addr);
946 pte &= ~(PG_NX_MASK | PG_HI_USER_MASK);
947 if (!(pte & PG_PRESENT_MASK))
952 if (!(env->cr[0] & CR0_PG_MASK)) {
956 /* page directory entry */
957 pde_addr = ((env->cr[3] & ~0xfff) + ((addr >> 20) & 0xffc)) & env->a20_mask;
958 pde = ldl_phys(pde_addr);
959 if (!(pde & PG_PRESENT_MASK))
961 if ((pde & PG_PSE_MASK) && (env->cr[4] & CR4_PSE_MASK)) {
962 pte = pde & ~0x003ff000; /* align to 4MB */
963 page_size = 4096 * 1024;
965 /* page directory entry */
966 pte_addr = ((pde & ~0xfff) + ((addr >> 10) & 0xffc)) & env->a20_mask;
967 pte = ldl_phys(pte_addr);
968 if (!(pte & PG_PRESENT_MASK))
973 pte = pte & env->a20_mask;
976 page_offset = (addr & TARGET_PAGE_MASK) & (page_size - 1);
977 paddr = (pte & TARGET_PAGE_MASK) + page_offset;
981 void hw_breakpoint_insert(CPUX86State *env, int index)
983 int type = 0, err = 0;
985 switch (hw_breakpoint_type(env->dr[7], index)) {
986 case DR7_TYPE_BP_INST:
987 if (hw_breakpoint_enabled(env->dr[7], index)) {
988 err = cpu_breakpoint_insert(env, env->dr[index], BP_CPU,
989 &env->cpu_breakpoint[index]);
992 case DR7_TYPE_DATA_WR:
993 type = BP_CPU | BP_MEM_WRITE;
996 /* No support for I/O watchpoints yet */
998 case DR7_TYPE_DATA_RW:
999 type = BP_CPU | BP_MEM_ACCESS;
1004 err = cpu_watchpoint_insert(env, env->dr[index],
1005 hw_breakpoint_len(env->dr[7], index),
1006 type, &env->cpu_watchpoint[index]);
1010 env->cpu_breakpoint[index] = NULL;
1014 void hw_breakpoint_remove(CPUX86State *env, int index)
1016 if (!env->cpu_breakpoint[index])
1018 switch (hw_breakpoint_type(env->dr[7], index)) {
1019 case DR7_TYPE_BP_INST:
1020 if (hw_breakpoint_enabled(env->dr[7], index)) {
1021 cpu_breakpoint_remove_by_ref(env, env->cpu_breakpoint[index]);
1024 case DR7_TYPE_DATA_WR:
1025 case DR7_TYPE_DATA_RW:
1026 cpu_watchpoint_remove_by_ref(env, env->cpu_watchpoint[index]);
1028 case DR7_TYPE_IO_RW:
1029 /* No support for I/O watchpoints yet */
1034 bool check_hw_breakpoints(CPUX86State *env, bool force_dr6_update)
1038 bool hit_enabled = false;
1040 dr6 = env->dr[6] & ~0xf;
1041 for (reg = 0; reg < DR7_MAX_BP; reg++) {
1042 bool bp_match = false;
1043 bool wp_match = false;
1045 switch (hw_breakpoint_type(env->dr[7], reg)) {
1046 case DR7_TYPE_BP_INST:
1047 if (env->dr[reg] == env->eip) {
1051 case DR7_TYPE_DATA_WR:
1052 case DR7_TYPE_DATA_RW:
1053 if (env->cpu_watchpoint[reg] &&
1054 env->cpu_watchpoint[reg]->flags & BP_WATCHPOINT_HIT) {
1058 case DR7_TYPE_IO_RW:
1061 if (bp_match || wp_match) {
1063 if (hw_breakpoint_enabled(env->dr[7], reg)) {
1069 if (hit_enabled || force_dr6_update) {
1076 void breakpoint_handler(CPUX86State *env)
1080 if (env->watchpoint_hit) {
1081 if (env->watchpoint_hit->flags & BP_CPU) {
1082 env->watchpoint_hit = NULL;
1083 if (check_hw_breakpoints(env, false)) {
1084 raise_exception(env, EXCP01_DB);
1086 cpu_resume_from_signal(env, NULL);
1090 QTAILQ_FOREACH(bp, &env->breakpoints, entry)
1091 if (bp->pc == env->eip) {
1092 if (bp->flags & BP_CPU) {
1093 check_hw_breakpoints(env, true);
1094 raise_exception(env, EXCP01_DB);
1101 typedef struct MCEInjectionParams {
1106 uint64_t mcg_status;
1110 } MCEInjectionParams;
1112 static void do_inject_x86_mce(void *data)
1114 MCEInjectionParams *params = data;
1115 CPUX86State *cenv = ¶ms->cpu->env;
1116 CPUState *cpu = CPU(params->cpu);
1117 uint64_t *banks = cenv->mce_banks + 4 * params->bank;
1119 cpu_synchronize_state(cenv);
1122 * If there is an MCE exception being processed, ignore this SRAO MCE
1123 * unless unconditional injection was requested.
1125 if (!(params->flags & MCE_INJECT_UNCOND_AO)
1126 && !(params->status & MCI_STATUS_AR)
1127 && (cenv->mcg_status & MCG_STATUS_MCIP)) {
1131 if (params->status & MCI_STATUS_UC) {
1133 * if MSR_MCG_CTL is not all 1s, the uncorrected error
1134 * reporting is disabled
1136 if ((cenv->mcg_cap & MCG_CTL_P) && cenv->mcg_ctl != ~(uint64_t)0) {
1137 monitor_printf(params->mon,
1138 "CPU %d: Uncorrected error reporting disabled\n",
1144 * if MSR_MCi_CTL is not all 1s, the uncorrected error
1145 * reporting is disabled for the bank
1147 if (banks[0] != ~(uint64_t)0) {
1148 monitor_printf(params->mon,
1149 "CPU %d: Uncorrected error reporting disabled for"
1151 cpu->cpu_index, params->bank);
1155 if ((cenv->mcg_status & MCG_STATUS_MCIP) ||
1156 !(cenv->cr[4] & CR4_MCE_MASK)) {
1157 monitor_printf(params->mon,
1158 "CPU %d: Previous MCE still in progress, raising"
1161 qemu_log_mask(CPU_LOG_RESET, "Triple fault\n");
1162 qemu_system_reset_request();
1165 if (banks[1] & MCI_STATUS_VAL) {
1166 params->status |= MCI_STATUS_OVER;
1168 banks[2] = params->addr;
1169 banks[3] = params->misc;
1170 cenv->mcg_status = params->mcg_status;
1171 banks[1] = params->status;
1172 cpu_interrupt(cpu, CPU_INTERRUPT_MCE);
1173 } else if (!(banks[1] & MCI_STATUS_VAL)
1174 || !(banks[1] & MCI_STATUS_UC)) {
1175 if (banks[1] & MCI_STATUS_VAL) {
1176 params->status |= MCI_STATUS_OVER;
1178 banks[2] = params->addr;
1179 banks[3] = params->misc;
1180 banks[1] = params->status;
1182 banks[1] |= MCI_STATUS_OVER;
1186 void cpu_x86_inject_mce(Monitor *mon, X86CPU *cpu, int bank,
1187 uint64_t status, uint64_t mcg_status, uint64_t addr,
1188 uint64_t misc, int flags)
1190 CPUX86State *cenv = &cpu->env;
1191 MCEInjectionParams params = {
1196 .mcg_status = mcg_status,
1201 unsigned bank_num = cenv->mcg_cap & 0xff;
1204 if (!cenv->mcg_cap) {
1205 monitor_printf(mon, "MCE injection not supported\n");
1208 if (bank >= bank_num) {
1209 monitor_printf(mon, "Invalid MCE bank number\n");
1212 if (!(status & MCI_STATUS_VAL)) {
1213 monitor_printf(mon, "Invalid MCE status code\n");
1216 if ((flags & MCE_INJECT_BROADCAST)
1217 && !cpu_x86_support_mca_broadcast(cenv)) {
1218 monitor_printf(mon, "Guest CPU does not support MCA broadcast\n");
1222 run_on_cpu(CPU(cpu), do_inject_x86_mce, ¶ms);
1223 if (flags & MCE_INJECT_BROADCAST) {
1225 params.status = MCI_STATUS_VAL | MCI_STATUS_UC;
1226 params.mcg_status = MCG_STATUS_MCIP | MCG_STATUS_RIPV;
1229 for (env = first_cpu; env != NULL; env = env->next_cpu) {
1233 params.cpu = x86_env_get_cpu(env);
1234 run_on_cpu(CPU(cpu), do_inject_x86_mce, ¶ms);
1239 void cpu_report_tpr_access(CPUX86State *env, TPRAccess access)
1241 if (kvm_enabled()) {
1242 env->tpr_access_type = access;
1244 cpu_interrupt(CPU(x86_env_get_cpu(env)), CPU_INTERRUPT_TPR);
1246 cpu_restore_state(env, env->mem_io_pc);
1248 apic_handle_tpr_access_report(env->apic_state, env->eip, access);
1251 #endif /* !CONFIG_USER_ONLY */
1253 int cpu_x86_get_descr_debug(CPUX86State *env, unsigned int selector,
1254 target_ulong *base, unsigned int *limit,
1255 unsigned int *flags)
1266 index = selector & ~7;
1267 ptr = dt->base + index;
1268 if ((index + 7) > dt->limit
1269 || cpu_memory_rw_debug(env, ptr, (uint8_t *)&e1, sizeof(e1), 0) != 0
1270 || cpu_memory_rw_debug(env, ptr+4, (uint8_t *)&e2, sizeof(e2), 0) != 0)
1273 *base = ((e1 >> 16) | ((e2 & 0xff) << 16) | (e2 & 0xff000000));
1274 *limit = (e1 & 0xffff) | (e2 & 0x000f0000);
1275 if (e2 & DESC_G_MASK)
1276 *limit = (*limit << 12) | 0xfff;
1282 #if !defined(CONFIG_USER_ONLY)
1283 void do_cpu_init(X86CPU *cpu)
1285 CPUState *cs = CPU(cpu);
1286 CPUX86State *env = &cpu->env;
1287 int sipi = cs->interrupt_request & CPU_INTERRUPT_SIPI;
1288 uint64_t pat = env->pat;
1291 cs->interrupt_request = sipi;
1293 apic_init_reset(env->apic_state);
1296 void do_cpu_sipi(X86CPU *cpu)
1298 CPUX86State *env = &cpu->env;
1300 apic_sipi(env->apic_state);
1303 void do_cpu_init(X86CPU *cpu)
1306 void do_cpu_sipi(X86CPU *cpu)