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' : '-');
151 (sc->flags & DESC_B_MASK || env->hflags & HF_LMA_MASK)
153 cpu_fprintf(f, " [%c%c", (sc->flags & DESC_E_MASK) ? 'E' : '-',
154 (sc->flags & DESC_W_MASK) ? 'W' : '-');
156 cpu_fprintf(f, "%c]", (sc->flags & DESC_A_MASK) ? 'A' : '-');
158 static const char *sys_type_name[2][16] = {
160 "Reserved", "TSS16-avl", "LDT", "TSS16-busy",
161 "CallGate16", "TaskGate", "IntGate16", "TrapGate16",
162 "Reserved", "TSS32-avl", "Reserved", "TSS32-busy",
163 "CallGate32", "Reserved", "IntGate32", "TrapGate32"
166 "<hiword>", "Reserved", "LDT", "Reserved", "Reserved",
167 "Reserved", "Reserved", "Reserved", "Reserved",
168 "TSS64-avl", "Reserved", "TSS64-busy", "CallGate64",
169 "Reserved", "IntGate64", "TrapGate64"
173 sys_type_name[(env->hflags & HF_LMA_MASK) ? 1 : 0]
174 [(sc->flags & DESC_TYPE_MASK)
175 >> DESC_TYPE_SHIFT]);
178 cpu_fprintf(f, "\n");
181 #define DUMP_CODE_BYTES_TOTAL 50
182 #define DUMP_CODE_BYTES_BACKWARD 20
184 void x86_cpu_dump_state(CPUState *cs, FILE *f, fprintf_function cpu_fprintf,
187 X86CPU *cpu = X86_CPU(cs);
188 CPUX86State *env = &cpu->env;
191 static const char *seg_name[6] = { "ES", "CS", "SS", "DS", "FS", "GS" };
193 eflags = cpu_compute_eflags(env);
195 if (env->hflags & HF_CS64_MASK) {
197 "RAX=%016" PRIx64 " RBX=%016" PRIx64 " RCX=%016" PRIx64 " RDX=%016" PRIx64 "\n"
198 "RSI=%016" PRIx64 " RDI=%016" PRIx64 " RBP=%016" PRIx64 " RSP=%016" PRIx64 "\n"
199 "R8 =%016" PRIx64 " R9 =%016" PRIx64 " R10=%016" PRIx64 " R11=%016" PRIx64 "\n"
200 "R12=%016" PRIx64 " R13=%016" PRIx64 " R14=%016" PRIx64 " R15=%016" PRIx64 "\n"
201 "RIP=%016" PRIx64 " RFL=%08x [%c%c%c%c%c%c%c] CPL=%d II=%d A20=%d SMM=%d HLT=%d\n",
219 eflags & DF_MASK ? 'D' : '-',
220 eflags & CC_O ? 'O' : '-',
221 eflags & CC_S ? 'S' : '-',
222 eflags & CC_Z ? 'Z' : '-',
223 eflags & CC_A ? 'A' : '-',
224 eflags & CC_P ? 'P' : '-',
225 eflags & CC_C ? 'C' : '-',
226 env->hflags & HF_CPL_MASK,
227 (env->hflags >> HF_INHIBIT_IRQ_SHIFT) & 1,
228 (env->a20_mask >> 20) & 1,
229 (env->hflags >> HF_SMM_SHIFT) & 1,
234 cpu_fprintf(f, "EAX=%08x EBX=%08x ECX=%08x EDX=%08x\n"
235 "ESI=%08x EDI=%08x EBP=%08x ESP=%08x\n"
236 "EIP=%08x EFL=%08x [%c%c%c%c%c%c%c] CPL=%d II=%d A20=%d SMM=%d HLT=%d\n",
237 (uint32_t)env->regs[R_EAX],
238 (uint32_t)env->regs[R_EBX],
239 (uint32_t)env->regs[R_ECX],
240 (uint32_t)env->regs[R_EDX],
241 (uint32_t)env->regs[R_ESI],
242 (uint32_t)env->regs[R_EDI],
243 (uint32_t)env->regs[R_EBP],
244 (uint32_t)env->regs[R_ESP],
245 (uint32_t)env->eip, eflags,
246 eflags & DF_MASK ? 'D' : '-',
247 eflags & CC_O ? 'O' : '-',
248 eflags & CC_S ? 'S' : '-',
249 eflags & CC_Z ? 'Z' : '-',
250 eflags & CC_A ? 'A' : '-',
251 eflags & CC_P ? 'P' : '-',
252 eflags & CC_C ? 'C' : '-',
253 env->hflags & HF_CPL_MASK,
254 (env->hflags >> HF_INHIBIT_IRQ_SHIFT) & 1,
255 (env->a20_mask >> 20) & 1,
256 (env->hflags >> HF_SMM_SHIFT) & 1,
260 for(i = 0; i < 6; i++) {
261 cpu_x86_dump_seg_cache(env, f, cpu_fprintf, seg_name[i],
264 cpu_x86_dump_seg_cache(env, f, cpu_fprintf, "LDT", &env->ldt);
265 cpu_x86_dump_seg_cache(env, f, cpu_fprintf, "TR", &env->tr);
268 if (env->hflags & HF_LMA_MASK) {
269 cpu_fprintf(f, "GDT= %016" PRIx64 " %08x\n",
270 env->gdt.base, env->gdt.limit);
271 cpu_fprintf(f, "IDT= %016" PRIx64 " %08x\n",
272 env->idt.base, env->idt.limit);
273 cpu_fprintf(f, "CR0=%08x CR2=%016" PRIx64 " CR3=%016" PRIx64 " CR4=%08x\n",
274 (uint32_t)env->cr[0],
277 (uint32_t)env->cr[4]);
278 for(i = 0; i < 4; i++)
279 cpu_fprintf(f, "DR%d=%016" PRIx64 " ", i, env->dr[i]);
280 cpu_fprintf(f, "\nDR6=%016" PRIx64 " DR7=%016" PRIx64 "\n",
281 env->dr[6], env->dr[7]);
285 cpu_fprintf(f, "GDT= %08x %08x\n",
286 (uint32_t)env->gdt.base, env->gdt.limit);
287 cpu_fprintf(f, "IDT= %08x %08x\n",
288 (uint32_t)env->idt.base, env->idt.limit);
289 cpu_fprintf(f, "CR0=%08x CR2=%08x CR3=%08x CR4=%08x\n",
290 (uint32_t)env->cr[0],
291 (uint32_t)env->cr[2],
292 (uint32_t)env->cr[3],
293 (uint32_t)env->cr[4]);
294 for(i = 0; i < 4; i++) {
295 cpu_fprintf(f, "DR%d=" TARGET_FMT_lx " ", i, env->dr[i]);
297 cpu_fprintf(f, "\nDR6=" TARGET_FMT_lx " DR7=" TARGET_FMT_lx "\n",
298 env->dr[6], env->dr[7]);
300 if (flags & CPU_DUMP_CCOP) {
301 if ((unsigned)env->cc_op < CC_OP_NB)
302 snprintf(cc_op_name, sizeof(cc_op_name), "%s", cc_op_str[env->cc_op]);
304 snprintf(cc_op_name, sizeof(cc_op_name), "[%d]", env->cc_op);
306 if (env->hflags & HF_CS64_MASK) {
307 cpu_fprintf(f, "CCS=%016" PRIx64 " CCD=%016" PRIx64 " CCO=%-8s\n",
308 env->cc_src, env->cc_dst,
313 cpu_fprintf(f, "CCS=%08x CCD=%08x CCO=%-8s\n",
314 (uint32_t)env->cc_src, (uint32_t)env->cc_dst,
318 cpu_fprintf(f, "EFER=%016" PRIx64 "\n", env->efer);
319 if (flags & CPU_DUMP_FPU) {
322 for(i = 0; i < 8; i++) {
323 fptag |= ((!env->fptags[i]) << i);
325 cpu_fprintf(f, "FCW=%04x FSW=%04x [ST=%d] FTW=%02x MXCSR=%08x\n",
327 (env->fpus & ~0x3800) | (env->fpstt & 0x7) << 11,
333 u.d = env->fpregs[i].d;
334 cpu_fprintf(f, "FPR%d=%016" PRIx64 " %04x",
335 i, u.l.lower, u.l.upper);
337 cpu_fprintf(f, "\n");
341 if (env->hflags & HF_CS64_MASK)
346 cpu_fprintf(f, "XMM%02d=%08x%08x%08x%08x",
348 env->xmm_regs[i].XMM_L(3),
349 env->xmm_regs[i].XMM_L(2),
350 env->xmm_regs[i].XMM_L(1),
351 env->xmm_regs[i].XMM_L(0));
353 cpu_fprintf(f, "\n");
358 if (flags & CPU_DUMP_CODE) {
359 target_ulong base = env->segs[R_CS].base + env->eip;
360 target_ulong offs = MIN(env->eip, DUMP_CODE_BYTES_BACKWARD);
364 cpu_fprintf(f, "Code=");
365 for (i = 0; i < DUMP_CODE_BYTES_TOTAL; i++) {
366 if (cpu_memory_rw_debug(cs, base - offs + i, &code, 1, 0) == 0) {
367 snprintf(codestr, sizeof(codestr), "%02x", code);
369 snprintf(codestr, sizeof(codestr), "??");
371 cpu_fprintf(f, "%s%s%s%s", i > 0 ? " " : "",
372 i == offs ? "<" : "", codestr, i == offs ? ">" : "");
374 cpu_fprintf(f, "\n");
378 /***********************************************************/
380 /* XXX: add PGE support */
382 void x86_cpu_set_a20(X86CPU *cpu, int a20_state)
384 CPUX86State *env = &cpu->env;
386 a20_state = (a20_state != 0);
387 if (a20_state != ((env->a20_mask >> 20) & 1)) {
388 #if defined(DEBUG_MMU)
389 printf("A20 update: a20=%d\n", a20_state);
391 /* if the cpu is currently executing code, we must unlink it and
392 all the potentially executing TB */
393 cpu_interrupt(CPU(cpu), CPU_INTERRUPT_EXITTB);
395 /* when a20 is changed, all the MMU mappings are invalid, so
396 we must flush everything */
398 env->a20_mask = ~(1 << 20) | (a20_state << 20);
402 void cpu_x86_update_cr0(CPUX86State *env, uint32_t new_cr0)
406 #if defined(DEBUG_MMU)
407 printf("CR0 update: CR0=0x%08x\n", new_cr0);
409 if ((new_cr0 & (CR0_PG_MASK | CR0_WP_MASK | CR0_PE_MASK)) !=
410 (env->cr[0] & (CR0_PG_MASK | CR0_WP_MASK | CR0_PE_MASK))) {
415 if (!(env->cr[0] & CR0_PG_MASK) && (new_cr0 & CR0_PG_MASK) &&
416 (env->efer & MSR_EFER_LME)) {
417 /* enter in long mode */
418 /* XXX: generate an exception */
419 if (!(env->cr[4] & CR4_PAE_MASK))
421 env->efer |= MSR_EFER_LMA;
422 env->hflags |= HF_LMA_MASK;
423 } else if ((env->cr[0] & CR0_PG_MASK) && !(new_cr0 & CR0_PG_MASK) &&
424 (env->efer & MSR_EFER_LMA)) {
426 env->efer &= ~MSR_EFER_LMA;
427 env->hflags &= ~(HF_LMA_MASK | HF_CS64_MASK);
428 env->eip &= 0xffffffff;
431 env->cr[0] = new_cr0 | CR0_ET_MASK;
433 /* update PE flag in hidden flags */
434 pe_state = (env->cr[0] & CR0_PE_MASK);
435 env->hflags = (env->hflags & ~HF_PE_MASK) | (pe_state << HF_PE_SHIFT);
436 /* ensure that ADDSEG is always set in real mode */
437 env->hflags |= ((pe_state ^ 1) << HF_ADDSEG_SHIFT);
438 /* update FPU flags */
439 env->hflags = (env->hflags & ~(HF_MP_MASK | HF_EM_MASK | HF_TS_MASK)) |
440 ((new_cr0 << (HF_MP_SHIFT - 1)) & (HF_MP_MASK | HF_EM_MASK | HF_TS_MASK));
443 /* XXX: in legacy PAE mode, generate a GPF if reserved bits are set in
445 void cpu_x86_update_cr3(CPUX86State *env, target_ulong new_cr3)
447 env->cr[3] = new_cr3;
448 if (env->cr[0] & CR0_PG_MASK) {
449 #if defined(DEBUG_MMU)
450 printf("CR3 update: CR3=" TARGET_FMT_lx "\n", new_cr3);
456 void cpu_x86_update_cr4(CPUX86State *env, uint32_t new_cr4)
458 #if defined(DEBUG_MMU)
459 printf("CR4 update: CR4=%08x\n", (uint32_t)env->cr[4]);
461 if ((new_cr4 ^ env->cr[4]) &
462 (CR4_PGE_MASK | CR4_PAE_MASK | CR4_PSE_MASK |
463 CR4_SMEP_MASK | CR4_SMAP_MASK)) {
467 if (!(env->features[FEAT_1_EDX] & CPUID_SSE)) {
468 new_cr4 &= ~CR4_OSFXSR_MASK;
470 env->hflags &= ~HF_OSFXSR_MASK;
471 if (new_cr4 & CR4_OSFXSR_MASK) {
472 env->hflags |= HF_OSFXSR_MASK;
475 if (!(env->features[FEAT_7_0_EBX] & CPUID_7_0_EBX_SMAP)) {
476 new_cr4 &= ~CR4_SMAP_MASK;
478 env->hflags &= ~HF_SMAP_MASK;
479 if (new_cr4 & CR4_SMAP_MASK) {
480 env->hflags |= HF_SMAP_MASK;
483 env->cr[4] = new_cr4;
486 #if defined(CONFIG_USER_ONLY)
488 int x86_cpu_handle_mmu_fault(CPUState *cs, vaddr addr,
489 int is_write, int mmu_idx)
491 X86CPU *cpu = X86_CPU(cs);
492 CPUX86State *env = &cpu->env;
494 /* user mode only emulation */
497 env->error_code = (is_write << PG_ERROR_W_BIT);
498 env->error_code |= PG_ERROR_U_MASK;
499 cs->exception_index = EXCP0E_PAGE;
505 /* XXX: This value should match the one returned by CPUID
507 # if defined(TARGET_X86_64)
508 # define PHYS_ADDR_MASK 0xfffffff000LL
510 # define PHYS_ADDR_MASK 0xffffff000LL
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;
525 int error_code, is_dirty, prot, page_size, is_write, is_user;
527 uint32_t page_offset;
528 target_ulong vaddr, virt_addr;
530 is_user = mmu_idx == MMU_USER_IDX;
531 #if defined(DEBUG_MMU)
532 printf("MMU fault: addr=%" VADDR_PRIx " w=%d u=%d eip=" TARGET_FMT_lx "\n",
533 addr, is_write1, is_user, env->eip);
535 is_write = is_write1 & 1;
537 if (!(env->cr[0] & CR0_PG_MASK)) {
540 if (!(env->hflags & HF_LMA_MASK)) {
541 /* Without long mode we can only address 32bits in real mode */
545 virt_addr = addr & TARGET_PAGE_MASK;
546 prot = PAGE_READ | PAGE_WRITE | PAGE_EXEC;
551 if (env->cr[4] & CR4_PAE_MASK) {
553 target_ulong pdpe_addr;
556 if (env->hflags & HF_LMA_MASK) {
557 uint64_t pml4e_addr, pml4e;
560 /* test virtual address sign extension */
561 sext = (int64_t)addr >> 47;
562 if (sext != 0 && sext != -1) {
564 cs->exception_index = EXCP0D_GPF;
568 pml4e_addr = ((env->cr[3] & ~0xfff) + (((addr >> 39) & 0x1ff) << 3)) &
570 pml4e = ldq_phys(cs->as, pml4e_addr);
571 if (!(pml4e & PG_PRESENT_MASK)) {
575 if (!(env->efer & MSR_EFER_NXE) && (pml4e & PG_NX_MASK)) {
576 error_code = PG_ERROR_RSVD_MASK;
579 if (!(pml4e & PG_ACCESSED_MASK)) {
580 pml4e |= PG_ACCESSED_MASK;
581 stl_phys_notdirty(cs->as, pml4e_addr, pml4e);
583 ptep = pml4e ^ PG_NX_MASK;
584 pdpe_addr = ((pml4e & PHYS_ADDR_MASK) + (((addr >> 30) & 0x1ff) << 3)) &
586 pdpe = ldq_phys(cs->as, pdpe_addr);
587 if (!(pdpe & PG_PRESENT_MASK)) {
591 if (!(env->efer & MSR_EFER_NXE) && (pdpe & PG_NX_MASK)) {
592 error_code = PG_ERROR_RSVD_MASK;
595 ptep &= pdpe ^ PG_NX_MASK;
596 if (!(pdpe & PG_ACCESSED_MASK)) {
597 pdpe |= PG_ACCESSED_MASK;
598 stl_phys_notdirty(cs->as, pdpe_addr, pdpe);
603 /* XXX: load them when cr3 is loaded ? */
604 pdpe_addr = ((env->cr[3] & ~0x1f) + ((addr >> 27) & 0x18)) &
606 pdpe = ldq_phys(cs->as, pdpe_addr);
607 if (!(pdpe & PG_PRESENT_MASK)) {
611 ptep = PG_NX_MASK | PG_USER_MASK | PG_RW_MASK;
614 pde_addr = ((pdpe & PHYS_ADDR_MASK) + (((addr >> 21) & 0x1ff) << 3)) &
616 pde = ldq_phys(cs->as, pde_addr);
617 if (!(pde & PG_PRESENT_MASK)) {
621 if (!(env->efer & MSR_EFER_NXE) && (pde & PG_NX_MASK)) {
622 error_code = PG_ERROR_RSVD_MASK;
625 ptep &= pde ^ PG_NX_MASK;
626 if (pde & PG_PSE_MASK) {
628 page_size = 2048 * 1024;
630 if ((ptep & PG_NX_MASK) && is_write1 == 2) {
631 goto do_fault_protect;
635 if (!(ptep & PG_USER_MASK)) {
636 goto do_fault_protect;
638 if (is_write && !(ptep & PG_RW_MASK)) {
639 goto do_fault_protect;
644 if (is_write1 != 2 && (env->cr[4] & CR4_SMAP_MASK) &&
645 (ptep & PG_USER_MASK)) {
646 goto do_fault_protect;
650 if (is_write1 == 2 && (env->cr[4] & CR4_SMEP_MASK) &&
651 (ptep & PG_USER_MASK)) {
652 goto do_fault_protect;
654 if ((env->cr[0] & CR0_WP_MASK) &&
655 is_write && !(ptep & PG_RW_MASK)) {
656 goto do_fault_protect;
660 default: /* cannot happen */
663 is_dirty = is_write && !(pde & PG_DIRTY_MASK);
664 if (!(pde & PG_ACCESSED_MASK) || is_dirty) {
665 pde |= PG_ACCESSED_MASK;
667 pde |= PG_DIRTY_MASK;
668 stl_phys_notdirty(cs->as, pde_addr, pde);
670 /* align to page_size */
671 pte = pde & ((PHYS_ADDR_MASK & ~(page_size - 1)) | 0xfff);
672 virt_addr = addr & ~(page_size - 1);
675 if (!(pde & PG_ACCESSED_MASK)) {
676 pde |= PG_ACCESSED_MASK;
677 stl_phys_notdirty(cs->as, pde_addr, pde);
679 pte_addr = ((pde & PHYS_ADDR_MASK) + (((addr >> 12) & 0x1ff) << 3)) &
681 pte = ldq_phys(cs->as, pte_addr);
682 if (!(pte & PG_PRESENT_MASK)) {
686 if (!(env->efer & MSR_EFER_NXE) && (pte & PG_NX_MASK)) {
687 error_code = PG_ERROR_RSVD_MASK;
690 /* combine pde and pte nx, user and rw protections */
691 ptep &= pte ^ PG_NX_MASK;
693 if ((ptep & PG_NX_MASK) && is_write1 == 2)
694 goto do_fault_protect;
697 if (!(ptep & PG_USER_MASK)) {
698 goto do_fault_protect;
700 if (is_write && !(ptep & PG_RW_MASK)) {
701 goto do_fault_protect;
706 if (is_write1 != 2 && (env->cr[4] & CR4_SMAP_MASK) &&
707 (ptep & PG_USER_MASK)) {
708 goto do_fault_protect;
712 if (is_write1 == 2 && (env->cr[4] & CR4_SMEP_MASK) &&
713 (ptep & PG_USER_MASK)) {
714 goto do_fault_protect;
716 if ((env->cr[0] & CR0_WP_MASK) &&
717 is_write && !(ptep & PG_RW_MASK)) {
718 goto do_fault_protect;
722 default: /* cannot happen */
725 is_dirty = is_write && !(pte & PG_DIRTY_MASK);
726 if (!(pte & PG_ACCESSED_MASK) || is_dirty) {
727 pte |= PG_ACCESSED_MASK;
729 pte |= PG_DIRTY_MASK;
730 stl_phys_notdirty(cs->as, pte_addr, pte);
733 virt_addr = addr & ~0xfff;
734 pte = pte & (PHYS_ADDR_MASK | 0xfff);
739 /* page directory entry */
740 pde_addr = ((env->cr[3] & ~0xfff) + ((addr >> 20) & 0xffc)) &
742 pde = ldl_phys(cs->as, pde_addr);
743 if (!(pde & PG_PRESENT_MASK)) {
747 /* if PSE bit is set, then we use a 4MB page */
748 if ((pde & PG_PSE_MASK) && (env->cr[4] & CR4_PSE_MASK)) {
749 page_size = 4096 * 1024;
752 if (!(pde & PG_USER_MASK)) {
753 goto do_fault_protect;
755 if (is_write && !(pde & PG_RW_MASK)) {
756 goto do_fault_protect;
761 if (is_write1 != 2 && (env->cr[4] & CR4_SMAP_MASK) &&
762 (pde & PG_USER_MASK)) {
763 goto do_fault_protect;
767 if (is_write1 == 2 && (env->cr[4] & CR4_SMEP_MASK) &&
768 (pde & PG_USER_MASK)) {
769 goto do_fault_protect;
771 if ((env->cr[0] & CR0_WP_MASK) &&
772 is_write && !(pde & PG_RW_MASK)) {
773 goto do_fault_protect;
777 default: /* cannot happen */
780 is_dirty = is_write && !(pde & PG_DIRTY_MASK);
781 if (!(pde & PG_ACCESSED_MASK) || is_dirty) {
782 pde |= PG_ACCESSED_MASK;
784 pde |= PG_DIRTY_MASK;
785 stl_phys_notdirty(cs->as, pde_addr, pde);
788 pte = pde & ~( (page_size - 1) & ~0xfff); /* align to page_size */
790 virt_addr = addr & ~(page_size - 1);
792 if (!(pde & PG_ACCESSED_MASK)) {
793 pde |= PG_ACCESSED_MASK;
794 stl_phys_notdirty(cs->as, pde_addr, pde);
797 /* page directory entry */
798 pte_addr = ((pde & ~0xfff) + ((addr >> 10) & 0xffc)) &
800 pte = ldl_phys(cs->as, pte_addr);
801 if (!(pte & PG_PRESENT_MASK)) {
805 /* combine pde and pte user and rw protections */
809 if (!(ptep & PG_USER_MASK)) {
810 goto do_fault_protect;
812 if (is_write && !(ptep & PG_RW_MASK)) {
813 goto do_fault_protect;
818 if (is_write1 != 2 && (env->cr[4] & CR4_SMAP_MASK) &&
819 (ptep & PG_USER_MASK)) {
820 goto do_fault_protect;
824 if (is_write1 == 2 && (env->cr[4] & CR4_SMEP_MASK) &&
825 (ptep & PG_USER_MASK)) {
826 goto do_fault_protect;
828 if ((env->cr[0] & CR0_WP_MASK) &&
829 is_write && !(ptep & PG_RW_MASK)) {
830 goto do_fault_protect;
834 default: /* cannot happen */
837 is_dirty = is_write && !(pte & PG_DIRTY_MASK);
838 if (!(pte & PG_ACCESSED_MASK) || is_dirty) {
839 pte |= PG_ACCESSED_MASK;
841 pte |= PG_DIRTY_MASK;
842 stl_phys_notdirty(cs->as, pte_addr, pte);
845 virt_addr = addr & ~0xfff;
848 /* the page can be put in the TLB */
850 if (!(ptep & PG_NX_MASK))
852 if (pte & PG_DIRTY_MASK) {
853 /* only set write access if already dirty... otherwise wait
856 if (ptep & PG_RW_MASK)
859 if (!(env->cr[0] & CR0_WP_MASK) ||
865 pte = pte & env->a20_mask;
867 /* Even if 4MB pages, we map only one 4KB page in the cache to
868 avoid filling it too fast */
869 page_offset = (addr & TARGET_PAGE_MASK) & (page_size - 1);
870 paddr = (pte & TARGET_PAGE_MASK) + page_offset;
871 vaddr = virt_addr + page_offset;
873 tlb_set_page(env, vaddr, paddr, prot, mmu_idx, page_size);
876 error_code = PG_ERROR_P_MASK;
878 error_code |= (is_write << PG_ERROR_W_BIT);
880 error_code |= PG_ERROR_U_MASK;
881 if (is_write1 == 2 &&
882 (((env->efer & MSR_EFER_NXE) &&
883 (env->cr[4] & CR4_PAE_MASK)) ||
884 (env->cr[4] & CR4_SMEP_MASK)))
885 error_code |= PG_ERROR_I_D_MASK;
886 if (env->intercept_exceptions & (1 << EXCP0E_PAGE)) {
887 /* cr2 is not modified in case of exceptions */
889 env->vm_vmcb + offsetof(struct vmcb, control.exit_info_2),
894 env->error_code = error_code;
895 cs->exception_index = EXCP0E_PAGE;
899 hwaddr x86_cpu_get_phys_page_debug(CPUState *cs, vaddr addr)
901 X86CPU *cpu = X86_CPU(cs);
902 CPUX86State *env = &cpu->env;
903 target_ulong pde_addr, pte_addr;
906 uint32_t page_offset;
909 if (!(env->cr[0] & CR0_PG_MASK)) {
910 pte = addr & env->a20_mask;
912 } else if (env->cr[4] & CR4_PAE_MASK) {
913 target_ulong pdpe_addr;
917 if (env->hflags & HF_LMA_MASK) {
918 uint64_t pml4e_addr, pml4e;
921 /* test virtual address sign extension */
922 sext = (int64_t)addr >> 47;
923 if (sext != 0 && sext != -1)
926 pml4e_addr = ((env->cr[3] & ~0xfff) + (((addr >> 39) & 0x1ff) << 3)) &
928 pml4e = ldq_phys(cs->as, pml4e_addr);
929 if (!(pml4e & PG_PRESENT_MASK))
932 pdpe_addr = ((pml4e & ~0xfff & ~(PG_NX_MASK | PG_HI_USER_MASK)) +
933 (((addr >> 30) & 0x1ff) << 3)) & env->a20_mask;
934 pdpe = ldq_phys(cs->as, pdpe_addr);
935 if (!(pdpe & PG_PRESENT_MASK))
940 pdpe_addr = ((env->cr[3] & ~0x1f) + ((addr >> 27) & 0x18)) &
942 pdpe = ldq_phys(cs->as, pdpe_addr);
943 if (!(pdpe & PG_PRESENT_MASK))
947 pde_addr = ((pdpe & ~0xfff & ~(PG_NX_MASK | PG_HI_USER_MASK)) +
948 (((addr >> 21) & 0x1ff) << 3)) & env->a20_mask;
949 pde = ldq_phys(cs->as, pde_addr);
950 if (!(pde & PG_PRESENT_MASK)) {
953 if (pde & PG_PSE_MASK) {
955 page_size = 2048 * 1024;
956 pte = pde & ~( (page_size - 1) & ~0xfff); /* align to page_size */
959 pte_addr = ((pde & ~0xfff & ~(PG_NX_MASK | PG_HI_USER_MASK)) +
960 (((addr >> 12) & 0x1ff) << 3)) & env->a20_mask;
962 pte = ldq_phys(cs->as, pte_addr);
964 pte &= ~(PG_NX_MASK | PG_HI_USER_MASK);
965 if (!(pte & PG_PRESENT_MASK))
970 /* page directory entry */
971 pde_addr = ((env->cr[3] & ~0xfff) + ((addr >> 20) & 0xffc)) & env->a20_mask;
972 pde = ldl_phys(cs->as, pde_addr);
973 if (!(pde & PG_PRESENT_MASK))
975 if ((pde & PG_PSE_MASK) && (env->cr[4] & CR4_PSE_MASK)) {
976 pte = pde & ~0x003ff000; /* align to 4MB */
977 page_size = 4096 * 1024;
979 /* page directory entry */
980 pte_addr = ((pde & ~0xfff) + ((addr >> 10) & 0xffc)) & env->a20_mask;
981 pte = ldl_phys(cs->as, pte_addr);
982 if (!(pte & PG_PRESENT_MASK))
986 pte = pte & env->a20_mask;
989 page_offset = (addr & TARGET_PAGE_MASK) & (page_size - 1);
990 paddr = (pte & TARGET_PAGE_MASK) + page_offset;
994 void hw_breakpoint_insert(CPUX86State *env, int index)
996 int type = 0, err = 0;
998 switch (hw_breakpoint_type(env->dr[7], index)) {
999 case DR7_TYPE_BP_INST:
1000 if (hw_breakpoint_enabled(env->dr[7], index)) {
1001 err = cpu_breakpoint_insert(env, env->dr[index], BP_CPU,
1002 &env->cpu_breakpoint[index]);
1005 case DR7_TYPE_DATA_WR:
1006 type = BP_CPU | BP_MEM_WRITE;
1008 case DR7_TYPE_IO_RW:
1009 /* No support for I/O watchpoints yet */
1011 case DR7_TYPE_DATA_RW:
1012 type = BP_CPU | BP_MEM_ACCESS;
1017 err = cpu_watchpoint_insert(env, env->dr[index],
1018 hw_breakpoint_len(env->dr[7], index),
1019 type, &env->cpu_watchpoint[index]);
1023 env->cpu_breakpoint[index] = NULL;
1027 void hw_breakpoint_remove(CPUX86State *env, int index)
1029 if (!env->cpu_breakpoint[index])
1031 switch (hw_breakpoint_type(env->dr[7], index)) {
1032 case DR7_TYPE_BP_INST:
1033 if (hw_breakpoint_enabled(env->dr[7], index)) {
1034 cpu_breakpoint_remove_by_ref(env, env->cpu_breakpoint[index]);
1037 case DR7_TYPE_DATA_WR:
1038 case DR7_TYPE_DATA_RW:
1039 cpu_watchpoint_remove_by_ref(env, env->cpu_watchpoint[index]);
1041 case DR7_TYPE_IO_RW:
1042 /* No support for I/O watchpoints yet */
1047 bool check_hw_breakpoints(CPUX86State *env, bool force_dr6_update)
1051 bool hit_enabled = false;
1053 dr6 = env->dr[6] & ~0xf;
1054 for (reg = 0; reg < DR7_MAX_BP; reg++) {
1055 bool bp_match = false;
1056 bool wp_match = false;
1058 switch (hw_breakpoint_type(env->dr[7], reg)) {
1059 case DR7_TYPE_BP_INST:
1060 if (env->dr[reg] == env->eip) {
1064 case DR7_TYPE_DATA_WR:
1065 case DR7_TYPE_DATA_RW:
1066 if (env->cpu_watchpoint[reg] &&
1067 env->cpu_watchpoint[reg]->flags & BP_WATCHPOINT_HIT) {
1071 case DR7_TYPE_IO_RW:
1074 if (bp_match || wp_match) {
1076 if (hw_breakpoint_enabled(env->dr[7], reg)) {
1082 if (hit_enabled || force_dr6_update) {
1089 void breakpoint_handler(CPUX86State *env)
1091 CPUState *cs = CPU(x86_env_get_cpu(env));
1094 if (cs->watchpoint_hit) {
1095 if (cs->watchpoint_hit->flags & BP_CPU) {
1096 cs->watchpoint_hit = NULL;
1097 if (check_hw_breakpoints(env, false)) {
1098 raise_exception(env, EXCP01_DB);
1100 cpu_resume_from_signal(env, NULL);
1104 QTAILQ_FOREACH(bp, &cs->breakpoints, entry) {
1105 if (bp->pc == env->eip) {
1106 if (bp->flags & BP_CPU) {
1107 check_hw_breakpoints(env, true);
1108 raise_exception(env, EXCP01_DB);
1116 typedef struct MCEInjectionParams {
1121 uint64_t mcg_status;
1125 } MCEInjectionParams;
1127 static void do_inject_x86_mce(void *data)
1129 MCEInjectionParams *params = data;
1130 CPUX86State *cenv = ¶ms->cpu->env;
1131 CPUState *cpu = CPU(params->cpu);
1132 uint64_t *banks = cenv->mce_banks + 4 * params->bank;
1134 cpu_synchronize_state(cpu);
1137 * If there is an MCE exception being processed, ignore this SRAO MCE
1138 * unless unconditional injection was requested.
1140 if (!(params->flags & MCE_INJECT_UNCOND_AO)
1141 && !(params->status & MCI_STATUS_AR)
1142 && (cenv->mcg_status & MCG_STATUS_MCIP)) {
1146 if (params->status & MCI_STATUS_UC) {
1148 * if MSR_MCG_CTL is not all 1s, the uncorrected error
1149 * reporting is disabled
1151 if ((cenv->mcg_cap & MCG_CTL_P) && cenv->mcg_ctl != ~(uint64_t)0) {
1152 monitor_printf(params->mon,
1153 "CPU %d: Uncorrected error reporting disabled\n",
1159 * if MSR_MCi_CTL is not all 1s, the uncorrected error
1160 * reporting is disabled for the bank
1162 if (banks[0] != ~(uint64_t)0) {
1163 monitor_printf(params->mon,
1164 "CPU %d: Uncorrected error reporting disabled for"
1166 cpu->cpu_index, params->bank);
1170 if ((cenv->mcg_status & MCG_STATUS_MCIP) ||
1171 !(cenv->cr[4] & CR4_MCE_MASK)) {
1172 monitor_printf(params->mon,
1173 "CPU %d: Previous MCE still in progress, raising"
1176 qemu_log_mask(CPU_LOG_RESET, "Triple fault\n");
1177 qemu_system_reset_request();
1180 if (banks[1] & MCI_STATUS_VAL) {
1181 params->status |= MCI_STATUS_OVER;
1183 banks[2] = params->addr;
1184 banks[3] = params->misc;
1185 cenv->mcg_status = params->mcg_status;
1186 banks[1] = params->status;
1187 cpu_interrupt(cpu, CPU_INTERRUPT_MCE);
1188 } else if (!(banks[1] & MCI_STATUS_VAL)
1189 || !(banks[1] & MCI_STATUS_UC)) {
1190 if (banks[1] & MCI_STATUS_VAL) {
1191 params->status |= MCI_STATUS_OVER;
1193 banks[2] = params->addr;
1194 banks[3] = params->misc;
1195 banks[1] = params->status;
1197 banks[1] |= MCI_STATUS_OVER;
1201 void cpu_x86_inject_mce(Monitor *mon, X86CPU *cpu, int bank,
1202 uint64_t status, uint64_t mcg_status, uint64_t addr,
1203 uint64_t misc, int flags)
1205 CPUState *cs = CPU(cpu);
1206 CPUX86State *cenv = &cpu->env;
1207 MCEInjectionParams params = {
1212 .mcg_status = mcg_status,
1217 unsigned bank_num = cenv->mcg_cap & 0xff;
1219 if (!cenv->mcg_cap) {
1220 monitor_printf(mon, "MCE injection not supported\n");
1223 if (bank >= bank_num) {
1224 monitor_printf(mon, "Invalid MCE bank number\n");
1227 if (!(status & MCI_STATUS_VAL)) {
1228 monitor_printf(mon, "Invalid MCE status code\n");
1231 if ((flags & MCE_INJECT_BROADCAST)
1232 && !cpu_x86_support_mca_broadcast(cenv)) {
1233 monitor_printf(mon, "Guest CPU does not support MCA broadcast\n");
1237 run_on_cpu(cs, do_inject_x86_mce, ¶ms);
1238 if (flags & MCE_INJECT_BROADCAST) {
1242 params.status = MCI_STATUS_VAL | MCI_STATUS_UC;
1243 params.mcg_status = MCG_STATUS_MCIP | MCG_STATUS_RIPV;
1246 CPU_FOREACH(other_cs) {
1247 if (other_cs == cs) {
1250 params.cpu = X86_CPU(other_cs);
1251 run_on_cpu(other_cs, do_inject_x86_mce, ¶ms);
1256 void cpu_report_tpr_access(CPUX86State *env, TPRAccess access)
1258 X86CPU *cpu = x86_env_get_cpu(env);
1259 CPUState *cs = CPU(cpu);
1261 if (kvm_enabled()) {
1262 env->tpr_access_type = access;
1264 cpu_interrupt(cs, CPU_INTERRUPT_TPR);
1266 cpu_restore_state(env, cs->mem_io_pc);
1268 apic_handle_tpr_access_report(cpu->apic_state, env->eip, access);
1271 #endif /* !CONFIG_USER_ONLY */
1273 int cpu_x86_get_descr_debug(CPUX86State *env, unsigned int selector,
1274 target_ulong *base, unsigned int *limit,
1275 unsigned int *flags)
1277 X86CPU *cpu = x86_env_get_cpu(env);
1278 CPUState *cs = CPU(cpu);
1288 index = selector & ~7;
1289 ptr = dt->base + index;
1290 if ((index + 7) > dt->limit
1291 || cpu_memory_rw_debug(cs, ptr, (uint8_t *)&e1, sizeof(e1), 0) != 0
1292 || cpu_memory_rw_debug(cs, ptr+4, (uint8_t *)&e2, sizeof(e2), 0) != 0)
1295 *base = ((e1 >> 16) | ((e2 & 0xff) << 16) | (e2 & 0xff000000));
1296 *limit = (e1 & 0xffff) | (e2 & 0x000f0000);
1297 if (e2 & DESC_G_MASK)
1298 *limit = (*limit << 12) | 0xfff;
1304 #if !defined(CONFIG_USER_ONLY)
1305 void do_cpu_init(X86CPU *cpu)
1307 CPUState *cs = CPU(cpu);
1308 CPUX86State *env = &cpu->env;
1309 int sipi = cs->interrupt_request & CPU_INTERRUPT_SIPI;
1310 uint64_t pat = env->pat;
1313 cs->interrupt_request = sipi;
1315 apic_init_reset(cpu->apic_state);
1318 void do_cpu_sipi(X86CPU *cpu)
1320 apic_sipi(cpu->apic_state);
1323 void do_cpu_init(X86CPU *cpu)
1326 void do_cpu_sipi(X86CPU *cpu)