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/>.
26 #include "qemu-common.h"
28 #ifndef CONFIG_USER_ONLY
35 /* NOTE: must be called outside the CPU execute loop */
36 void cpu_reset(CPUX86State *env)
40 if (qemu_loglevel_mask(CPU_LOG_RESET)) {
41 qemu_log("CPU Reset (CPU %d)\n", env->cpu_index);
42 log_cpu_state(env, X86_DUMP_FPU | X86_DUMP_CCOP);
45 memset(env, 0, offsetof(CPUX86State, breakpoints));
49 env->old_exception = -1;
51 /* init to reset state */
54 env->hflags |= HF_SOFTMMU_MASK;
56 env->hflags2 |= HF2_GIF_MASK;
58 cpu_x86_update_cr0(env, 0x60000010);
60 env->smbase = 0x30000;
62 env->idt.limit = 0xffff;
63 env->gdt.limit = 0xffff;
64 env->ldt.limit = 0xffff;
65 env->ldt.flags = DESC_P_MASK | (2 << DESC_TYPE_SHIFT);
66 env->tr.limit = 0xffff;
67 env->tr.flags = DESC_P_MASK | (11 << DESC_TYPE_SHIFT);
69 cpu_x86_load_seg_cache(env, R_CS, 0xf000, 0xffff0000, 0xffff,
70 DESC_P_MASK | DESC_S_MASK | DESC_CS_MASK |
71 DESC_R_MASK | DESC_A_MASK);
72 cpu_x86_load_seg_cache(env, R_DS, 0, 0, 0xffff,
73 DESC_P_MASK | DESC_S_MASK | DESC_W_MASK |
75 cpu_x86_load_seg_cache(env, R_ES, 0, 0, 0xffff,
76 DESC_P_MASK | DESC_S_MASK | DESC_W_MASK |
78 cpu_x86_load_seg_cache(env, R_SS, 0, 0, 0xffff,
79 DESC_P_MASK | DESC_S_MASK | DESC_W_MASK |
81 cpu_x86_load_seg_cache(env, R_FS, 0, 0, 0xffff,
82 DESC_P_MASK | DESC_S_MASK | DESC_W_MASK |
84 cpu_x86_load_seg_cache(env, R_GS, 0, 0, 0xffff,
85 DESC_P_MASK | DESC_S_MASK | DESC_W_MASK |
89 env->regs[R_EDX] = env->cpuid_version;
100 env->pat = 0x0007040600070406ULL;
102 memset(env->dr, 0, sizeof(env->dr));
103 env->dr[6] = DR6_FIXED_1;
104 env->dr[7] = DR7_FIXED_1;
105 cpu_breakpoint_remove_all(env, BP_CPU);
106 cpu_watchpoint_remove_all(env, BP_CPU);
109 void cpu_x86_close(CPUX86State *env)
114 static void cpu_x86_version(CPUState *env, int *family, int *model)
116 int cpuver = env->cpuid_version;
118 if (family == NULL || model == NULL) {
122 *family = (cpuver >> 8) & 0x0f;
123 *model = ((cpuver >> 12) & 0xf0) + ((cpuver >> 4) & 0x0f);
126 /* Broadcast MCA signal for processor version 06H_EH and above */
127 int cpu_x86_support_mca_broadcast(CPUState *env)
132 cpu_x86_version(env, &family, &model);
133 if ((family == 6 && model >= 14) || family > 6) {
140 /***********************************************************/
143 static const char *cc_op_str[] = {
199 cpu_x86_dump_seg_cache(CPUState *env, FILE *f, fprintf_function cpu_fprintf,
200 const char *name, struct SegmentCache *sc)
203 if (env->hflags & HF_CS64_MASK) {
204 cpu_fprintf(f, "%-3s=%04x %016" PRIx64 " %08x %08x", name,
205 sc->selector, sc->base, sc->limit, sc->flags & 0x00ffff00);
209 cpu_fprintf(f, "%-3s=%04x %08x %08x %08x", name, sc->selector,
210 (uint32_t)sc->base, sc->limit, sc->flags & 0x00ffff00);
213 if (!(env->hflags & HF_PE_MASK) || !(sc->flags & DESC_P_MASK))
216 cpu_fprintf(f, " DPL=%d ", (sc->flags & DESC_DPL_MASK) >> DESC_DPL_SHIFT);
217 if (sc->flags & DESC_S_MASK) {
218 if (sc->flags & DESC_CS_MASK) {
219 cpu_fprintf(f, (sc->flags & DESC_L_MASK) ? "CS64" :
220 ((sc->flags & DESC_B_MASK) ? "CS32" : "CS16"));
221 cpu_fprintf(f, " [%c%c", (sc->flags & DESC_C_MASK) ? 'C' : '-',
222 (sc->flags & DESC_R_MASK) ? 'R' : '-');
224 cpu_fprintf(f, (sc->flags & DESC_B_MASK) ? "DS " : "DS16");
225 cpu_fprintf(f, " [%c%c", (sc->flags & DESC_E_MASK) ? 'E' : '-',
226 (sc->flags & DESC_W_MASK) ? 'W' : '-');
228 cpu_fprintf(f, "%c]", (sc->flags & DESC_A_MASK) ? 'A' : '-');
230 static const char *sys_type_name[2][16] = {
232 "Reserved", "TSS16-avl", "LDT", "TSS16-busy",
233 "CallGate16", "TaskGate", "IntGate16", "TrapGate16",
234 "Reserved", "TSS32-avl", "Reserved", "TSS32-busy",
235 "CallGate32", "Reserved", "IntGate32", "TrapGate32"
238 "<hiword>", "Reserved", "LDT", "Reserved", "Reserved",
239 "Reserved", "Reserved", "Reserved", "Reserved",
240 "TSS64-avl", "Reserved", "TSS64-busy", "CallGate64",
241 "Reserved", "IntGate64", "TrapGate64"
245 sys_type_name[(env->hflags & HF_LMA_MASK) ? 1 : 0]
246 [(sc->flags & DESC_TYPE_MASK)
247 >> DESC_TYPE_SHIFT]);
250 cpu_fprintf(f, "\n");
253 #define DUMP_CODE_BYTES_TOTAL 50
254 #define DUMP_CODE_BYTES_BACKWARD 20
256 void cpu_dump_state(CPUState *env, FILE *f, fprintf_function cpu_fprintf,
261 static const char *seg_name[6] = { "ES", "CS", "SS", "DS", "FS", "GS" };
263 cpu_synchronize_state(env);
265 eflags = env->eflags;
267 if (env->hflags & HF_CS64_MASK) {
269 "RAX=%016" PRIx64 " RBX=%016" PRIx64 " RCX=%016" PRIx64 " RDX=%016" PRIx64 "\n"
270 "RSI=%016" PRIx64 " RDI=%016" PRIx64 " RBP=%016" PRIx64 " RSP=%016" PRIx64 "\n"
271 "R8 =%016" PRIx64 " R9 =%016" PRIx64 " R10=%016" PRIx64 " R11=%016" PRIx64 "\n"
272 "R12=%016" PRIx64 " R13=%016" PRIx64 " R14=%016" PRIx64 " R15=%016" PRIx64 "\n"
273 "RIP=%016" PRIx64 " RFL=%08x [%c%c%c%c%c%c%c] CPL=%d II=%d A20=%d SMM=%d HLT=%d\n",
291 eflags & DF_MASK ? 'D' : '-',
292 eflags & CC_O ? 'O' : '-',
293 eflags & CC_S ? 'S' : '-',
294 eflags & CC_Z ? 'Z' : '-',
295 eflags & CC_A ? 'A' : '-',
296 eflags & CC_P ? 'P' : '-',
297 eflags & CC_C ? 'C' : '-',
298 env->hflags & HF_CPL_MASK,
299 (env->hflags >> HF_INHIBIT_IRQ_SHIFT) & 1,
300 (env->a20_mask >> 20) & 1,
301 (env->hflags >> HF_SMM_SHIFT) & 1,
306 cpu_fprintf(f, "EAX=%08x EBX=%08x ECX=%08x EDX=%08x\n"
307 "ESI=%08x EDI=%08x EBP=%08x ESP=%08x\n"
308 "EIP=%08x EFL=%08x [%c%c%c%c%c%c%c] CPL=%d II=%d A20=%d SMM=%d HLT=%d\n",
309 (uint32_t)env->regs[R_EAX],
310 (uint32_t)env->regs[R_EBX],
311 (uint32_t)env->regs[R_ECX],
312 (uint32_t)env->regs[R_EDX],
313 (uint32_t)env->regs[R_ESI],
314 (uint32_t)env->regs[R_EDI],
315 (uint32_t)env->regs[R_EBP],
316 (uint32_t)env->regs[R_ESP],
317 (uint32_t)env->eip, eflags,
318 eflags & DF_MASK ? 'D' : '-',
319 eflags & CC_O ? 'O' : '-',
320 eflags & CC_S ? 'S' : '-',
321 eflags & CC_Z ? 'Z' : '-',
322 eflags & CC_A ? 'A' : '-',
323 eflags & CC_P ? 'P' : '-',
324 eflags & CC_C ? 'C' : '-',
325 env->hflags & HF_CPL_MASK,
326 (env->hflags >> HF_INHIBIT_IRQ_SHIFT) & 1,
327 (env->a20_mask >> 20) & 1,
328 (env->hflags >> HF_SMM_SHIFT) & 1,
332 for(i = 0; i < 6; i++) {
333 cpu_x86_dump_seg_cache(env, f, cpu_fprintf, seg_name[i],
336 cpu_x86_dump_seg_cache(env, f, cpu_fprintf, "LDT", &env->ldt);
337 cpu_x86_dump_seg_cache(env, f, cpu_fprintf, "TR", &env->tr);
340 if (env->hflags & HF_LMA_MASK) {
341 cpu_fprintf(f, "GDT= %016" PRIx64 " %08x\n",
342 env->gdt.base, env->gdt.limit);
343 cpu_fprintf(f, "IDT= %016" PRIx64 " %08x\n",
344 env->idt.base, env->idt.limit);
345 cpu_fprintf(f, "CR0=%08x CR2=%016" PRIx64 " CR3=%016" PRIx64 " CR4=%08x\n",
346 (uint32_t)env->cr[0],
349 (uint32_t)env->cr[4]);
350 for(i = 0; i < 4; i++)
351 cpu_fprintf(f, "DR%d=%016" PRIx64 " ", i, env->dr[i]);
352 cpu_fprintf(f, "\nDR6=%016" PRIx64 " DR7=%016" PRIx64 "\n",
353 env->dr[6], env->dr[7]);
357 cpu_fprintf(f, "GDT= %08x %08x\n",
358 (uint32_t)env->gdt.base, env->gdt.limit);
359 cpu_fprintf(f, "IDT= %08x %08x\n",
360 (uint32_t)env->idt.base, env->idt.limit);
361 cpu_fprintf(f, "CR0=%08x CR2=%08x CR3=%08x CR4=%08x\n",
362 (uint32_t)env->cr[0],
363 (uint32_t)env->cr[2],
364 (uint32_t)env->cr[3],
365 (uint32_t)env->cr[4]);
366 for(i = 0; i < 4; i++) {
367 cpu_fprintf(f, "DR%d=" TARGET_FMT_lx " ", i, env->dr[i]);
369 cpu_fprintf(f, "\nDR6=" TARGET_FMT_lx " DR7=" TARGET_FMT_lx "\n",
370 env->dr[6], env->dr[7]);
372 if (flags & X86_DUMP_CCOP) {
373 if ((unsigned)env->cc_op < CC_OP_NB)
374 snprintf(cc_op_name, sizeof(cc_op_name), "%s", cc_op_str[env->cc_op]);
376 snprintf(cc_op_name, sizeof(cc_op_name), "[%d]", env->cc_op);
378 if (env->hflags & HF_CS64_MASK) {
379 cpu_fprintf(f, "CCS=%016" PRIx64 " CCD=%016" PRIx64 " CCO=%-8s\n",
380 env->cc_src, env->cc_dst,
385 cpu_fprintf(f, "CCS=%08x CCD=%08x CCO=%-8s\n",
386 (uint32_t)env->cc_src, (uint32_t)env->cc_dst,
390 cpu_fprintf(f, "EFER=%016" PRIx64 "\n", env->efer);
391 if (flags & X86_DUMP_FPU) {
394 for(i = 0; i < 8; i++) {
395 fptag |= ((!env->fptags[i]) << i);
397 cpu_fprintf(f, "FCW=%04x FSW=%04x [ST=%d] FTW=%02x MXCSR=%08x\n",
399 (env->fpus & ~0x3800) | (env->fpstt & 0x7) << 11,
405 u.d = env->fpregs[i].d;
406 cpu_fprintf(f, "FPR%d=%016" PRIx64 " %04x",
407 i, u.l.lower, u.l.upper);
409 cpu_fprintf(f, "\n");
413 if (env->hflags & HF_CS64_MASK)
418 cpu_fprintf(f, "XMM%02d=%08x%08x%08x%08x",
420 env->xmm_regs[i].XMM_L(3),
421 env->xmm_regs[i].XMM_L(2),
422 env->xmm_regs[i].XMM_L(1),
423 env->xmm_regs[i].XMM_L(0));
425 cpu_fprintf(f, "\n");
430 if (flags & CPU_DUMP_CODE) {
431 target_ulong base = env->segs[R_CS].base + env->eip;
432 target_ulong offs = MIN(env->eip, DUMP_CODE_BYTES_BACKWARD);
436 cpu_fprintf(f, "Code=");
437 for (i = 0; i < DUMP_CODE_BYTES_TOTAL; i++) {
438 if (cpu_memory_rw_debug(env, base - offs + i, &code, 1, 0) == 0) {
439 snprintf(codestr, sizeof(codestr), "%02x", code);
441 snprintf(codestr, sizeof(codestr), "??");
443 cpu_fprintf(f, "%s%s%s%s", i > 0 ? " " : "",
444 i == offs ? "<" : "", codestr, i == offs ? ">" : "");
446 cpu_fprintf(f, "\n");
450 /***********************************************************/
452 /* XXX: add PGE support */
454 void cpu_x86_set_a20(CPUX86State *env, int a20_state)
456 a20_state = (a20_state != 0);
457 if (a20_state != ((env->a20_mask >> 20) & 1)) {
458 #if defined(DEBUG_MMU)
459 printf("A20 update: a20=%d\n", a20_state);
461 /* if the cpu is currently executing code, we must unlink it and
462 all the potentially executing TB */
463 cpu_interrupt(env, CPU_INTERRUPT_EXITTB);
465 /* when a20 is changed, all the MMU mappings are invalid, so
466 we must flush everything */
468 env->a20_mask = ~(1 << 20) | (a20_state << 20);
472 void cpu_x86_update_cr0(CPUX86State *env, uint32_t new_cr0)
476 #if defined(DEBUG_MMU)
477 printf("CR0 update: CR0=0x%08x\n", new_cr0);
479 if ((new_cr0 & (CR0_PG_MASK | CR0_WP_MASK | CR0_PE_MASK)) !=
480 (env->cr[0] & (CR0_PG_MASK | CR0_WP_MASK | CR0_PE_MASK))) {
485 if (!(env->cr[0] & CR0_PG_MASK) && (new_cr0 & CR0_PG_MASK) &&
486 (env->efer & MSR_EFER_LME)) {
487 /* enter in long mode */
488 /* XXX: generate an exception */
489 if (!(env->cr[4] & CR4_PAE_MASK))
491 env->efer |= MSR_EFER_LMA;
492 env->hflags |= HF_LMA_MASK;
493 } else if ((env->cr[0] & CR0_PG_MASK) && !(new_cr0 & CR0_PG_MASK) &&
494 (env->efer & MSR_EFER_LMA)) {
496 env->efer &= ~MSR_EFER_LMA;
497 env->hflags &= ~(HF_LMA_MASK | HF_CS64_MASK);
498 env->eip &= 0xffffffff;
501 env->cr[0] = new_cr0 | CR0_ET_MASK;
503 /* update PE flag in hidden flags */
504 pe_state = (env->cr[0] & CR0_PE_MASK);
505 env->hflags = (env->hflags & ~HF_PE_MASK) | (pe_state << HF_PE_SHIFT);
506 /* ensure that ADDSEG is always set in real mode */
507 env->hflags |= ((pe_state ^ 1) << HF_ADDSEG_SHIFT);
508 /* update FPU flags */
509 env->hflags = (env->hflags & ~(HF_MP_MASK | HF_EM_MASK | HF_TS_MASK)) |
510 ((new_cr0 << (HF_MP_SHIFT - 1)) & (HF_MP_MASK | HF_EM_MASK | HF_TS_MASK));
513 /* XXX: in legacy PAE mode, generate a GPF if reserved bits are set in
515 void cpu_x86_update_cr3(CPUX86State *env, target_ulong new_cr3)
517 env->cr[3] = new_cr3;
518 if (env->cr[0] & CR0_PG_MASK) {
519 #if defined(DEBUG_MMU)
520 printf("CR3 update: CR3=" TARGET_FMT_lx "\n", new_cr3);
526 void cpu_x86_update_cr4(CPUX86State *env, uint32_t new_cr4)
528 #if defined(DEBUG_MMU)
529 printf("CR4 update: CR4=%08x\n", (uint32_t)env->cr[4]);
531 if ((new_cr4 & (CR4_PGE_MASK | CR4_PAE_MASK | CR4_PSE_MASK)) !=
532 (env->cr[4] & (CR4_PGE_MASK | CR4_PAE_MASK | CR4_PSE_MASK))) {
536 if (!(env->cpuid_features & CPUID_SSE))
537 new_cr4 &= ~CR4_OSFXSR_MASK;
538 if (new_cr4 & CR4_OSFXSR_MASK)
539 env->hflags |= HF_OSFXSR_MASK;
541 env->hflags &= ~HF_OSFXSR_MASK;
543 env->cr[4] = new_cr4;
546 #if defined(CONFIG_USER_ONLY)
548 int cpu_x86_handle_mmu_fault(CPUX86State *env, target_ulong addr,
549 int is_write, int mmu_idx, int is_softmmu)
551 /* user mode only emulation */
554 env->error_code = (is_write << PG_ERROR_W_BIT);
555 env->error_code |= PG_ERROR_U_MASK;
556 env->exception_index = EXCP0E_PAGE;
562 /* XXX: This value should match the one returned by CPUID
564 # if defined(TARGET_X86_64)
565 # define PHYS_ADDR_MASK 0xfffffff000LL
567 # define PHYS_ADDR_MASK 0xffffff000LL
571 -1 = cannot handle fault
572 0 = nothing more to do
573 1 = generate PF fault
575 int cpu_x86_handle_mmu_fault(CPUX86State *env, target_ulong addr,
576 int is_write1, int mmu_idx, int is_softmmu)
579 target_ulong pde_addr, pte_addr;
580 int error_code, is_dirty, prot, page_size, is_write, is_user;
581 target_phys_addr_t paddr;
582 uint32_t page_offset;
583 target_ulong vaddr, virt_addr;
585 is_user = mmu_idx == MMU_USER_IDX;
586 #if defined(DEBUG_MMU)
587 printf("MMU fault: addr=" TARGET_FMT_lx " w=%d u=%d eip=" TARGET_FMT_lx "\n",
588 addr, is_write1, is_user, env->eip);
590 is_write = is_write1 & 1;
592 if (!(env->cr[0] & CR0_PG_MASK)) {
594 virt_addr = addr & TARGET_PAGE_MASK;
595 prot = PAGE_READ | PAGE_WRITE | PAGE_EXEC;
600 if (env->cr[4] & CR4_PAE_MASK) {
602 target_ulong pdpe_addr;
605 if (env->hflags & HF_LMA_MASK) {
606 uint64_t pml4e_addr, pml4e;
609 /* test virtual address sign extension */
610 sext = (int64_t)addr >> 47;
611 if (sext != 0 && sext != -1) {
613 env->exception_index = EXCP0D_GPF;
617 pml4e_addr = ((env->cr[3] & ~0xfff) + (((addr >> 39) & 0x1ff) << 3)) &
619 pml4e = ldq_phys(pml4e_addr);
620 if (!(pml4e & PG_PRESENT_MASK)) {
624 if (!(env->efer & MSR_EFER_NXE) && (pml4e & PG_NX_MASK)) {
625 error_code = PG_ERROR_RSVD_MASK;
628 if (!(pml4e & PG_ACCESSED_MASK)) {
629 pml4e |= PG_ACCESSED_MASK;
630 stl_phys_notdirty(pml4e_addr, pml4e);
632 ptep = pml4e ^ PG_NX_MASK;
633 pdpe_addr = ((pml4e & PHYS_ADDR_MASK) + (((addr >> 30) & 0x1ff) << 3)) &
635 pdpe = ldq_phys(pdpe_addr);
636 if (!(pdpe & PG_PRESENT_MASK)) {
640 if (!(env->efer & MSR_EFER_NXE) && (pdpe & PG_NX_MASK)) {
641 error_code = PG_ERROR_RSVD_MASK;
644 ptep &= pdpe ^ PG_NX_MASK;
645 if (!(pdpe & PG_ACCESSED_MASK)) {
646 pdpe |= PG_ACCESSED_MASK;
647 stl_phys_notdirty(pdpe_addr, pdpe);
652 /* XXX: load them when cr3 is loaded ? */
653 pdpe_addr = ((env->cr[3] & ~0x1f) + ((addr >> 27) & 0x18)) &
655 pdpe = ldq_phys(pdpe_addr);
656 if (!(pdpe & PG_PRESENT_MASK)) {
660 ptep = PG_NX_MASK | PG_USER_MASK | PG_RW_MASK;
663 pde_addr = ((pdpe & PHYS_ADDR_MASK) + (((addr >> 21) & 0x1ff) << 3)) &
665 pde = ldq_phys(pde_addr);
666 if (!(pde & PG_PRESENT_MASK)) {
670 if (!(env->efer & MSR_EFER_NXE) && (pde & PG_NX_MASK)) {
671 error_code = PG_ERROR_RSVD_MASK;
674 ptep &= pde ^ PG_NX_MASK;
675 if (pde & PG_PSE_MASK) {
677 page_size = 2048 * 1024;
679 if ((ptep & PG_NX_MASK) && is_write1 == 2)
680 goto do_fault_protect;
682 if (!(ptep & PG_USER_MASK))
683 goto do_fault_protect;
684 if (is_write && !(ptep & PG_RW_MASK))
685 goto do_fault_protect;
687 if ((env->cr[0] & CR0_WP_MASK) &&
688 is_write && !(ptep & PG_RW_MASK))
689 goto do_fault_protect;
691 is_dirty = is_write && !(pde & PG_DIRTY_MASK);
692 if (!(pde & PG_ACCESSED_MASK) || is_dirty) {
693 pde |= PG_ACCESSED_MASK;
695 pde |= PG_DIRTY_MASK;
696 stl_phys_notdirty(pde_addr, pde);
698 /* align to page_size */
699 pte = pde & ((PHYS_ADDR_MASK & ~(page_size - 1)) | 0xfff);
700 virt_addr = addr & ~(page_size - 1);
703 if (!(pde & PG_ACCESSED_MASK)) {
704 pde |= PG_ACCESSED_MASK;
705 stl_phys_notdirty(pde_addr, pde);
707 pte_addr = ((pde & PHYS_ADDR_MASK) + (((addr >> 12) & 0x1ff) << 3)) &
709 pte = ldq_phys(pte_addr);
710 if (!(pte & PG_PRESENT_MASK)) {
714 if (!(env->efer & MSR_EFER_NXE) && (pte & PG_NX_MASK)) {
715 error_code = PG_ERROR_RSVD_MASK;
718 /* combine pde and pte nx, user and rw protections */
719 ptep &= pte ^ PG_NX_MASK;
721 if ((ptep & PG_NX_MASK) && is_write1 == 2)
722 goto do_fault_protect;
724 if (!(ptep & PG_USER_MASK))
725 goto do_fault_protect;
726 if (is_write && !(ptep & PG_RW_MASK))
727 goto do_fault_protect;
729 if ((env->cr[0] & CR0_WP_MASK) &&
730 is_write && !(ptep & PG_RW_MASK))
731 goto do_fault_protect;
733 is_dirty = is_write && !(pte & PG_DIRTY_MASK);
734 if (!(pte & PG_ACCESSED_MASK) || is_dirty) {
735 pte |= PG_ACCESSED_MASK;
737 pte |= PG_DIRTY_MASK;
738 stl_phys_notdirty(pte_addr, pte);
741 virt_addr = addr & ~0xfff;
742 pte = pte & (PHYS_ADDR_MASK | 0xfff);
747 /* page directory entry */
748 pde_addr = ((env->cr[3] & ~0xfff) + ((addr >> 20) & 0xffc)) &
750 pde = ldl_phys(pde_addr);
751 if (!(pde & PG_PRESENT_MASK)) {
755 /* if PSE bit is set, then we use a 4MB page */
756 if ((pde & PG_PSE_MASK) && (env->cr[4] & CR4_PSE_MASK)) {
757 page_size = 4096 * 1024;
759 if (!(pde & PG_USER_MASK))
760 goto do_fault_protect;
761 if (is_write && !(pde & PG_RW_MASK))
762 goto do_fault_protect;
764 if ((env->cr[0] & CR0_WP_MASK) &&
765 is_write && !(pde & PG_RW_MASK))
766 goto do_fault_protect;
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 */
796 if (!(ptep & PG_USER_MASK))
797 goto do_fault_protect;
798 if (is_write && !(ptep & PG_RW_MASK))
799 goto do_fault_protect;
801 if ((env->cr[0] & CR0_WP_MASK) &&
802 is_write && !(ptep & PG_RW_MASK))
803 goto do_fault_protect;
805 is_dirty = is_write && !(pte & PG_DIRTY_MASK);
806 if (!(pte & PG_ACCESSED_MASK) || is_dirty) {
807 pte |= PG_ACCESSED_MASK;
809 pte |= PG_DIRTY_MASK;
810 stl_phys_notdirty(pte_addr, pte);
813 virt_addr = addr & ~0xfff;
816 /* the page can be put in the TLB */
818 if (!(ptep & PG_NX_MASK))
820 if (pte & PG_DIRTY_MASK) {
821 /* only set write access if already dirty... otherwise wait
824 if (ptep & PG_RW_MASK)
827 if (!(env->cr[0] & CR0_WP_MASK) ||
833 pte = pte & env->a20_mask;
835 /* Even if 4MB pages, we map only one 4KB page in the cache to
836 avoid filling it too fast */
837 page_offset = (addr & TARGET_PAGE_MASK) & (page_size - 1);
838 paddr = (pte & TARGET_PAGE_MASK) + page_offset;
839 vaddr = virt_addr + page_offset;
841 tlb_set_page(env, vaddr, paddr, prot, mmu_idx, page_size);
844 error_code = PG_ERROR_P_MASK;
846 error_code |= (is_write << PG_ERROR_W_BIT);
848 error_code |= PG_ERROR_U_MASK;
849 if (is_write1 == 2 &&
850 (env->efer & MSR_EFER_NXE) &&
851 (env->cr[4] & CR4_PAE_MASK))
852 error_code |= PG_ERROR_I_D_MASK;
853 if (env->intercept_exceptions & (1 << EXCP0E_PAGE)) {
854 /* cr2 is not modified in case of exceptions */
855 stq_phys(env->vm_vmcb + offsetof(struct vmcb, control.exit_info_2),
860 env->error_code = error_code;
861 env->exception_index = EXCP0E_PAGE;
865 target_phys_addr_t cpu_get_phys_page_debug(CPUState *env, target_ulong addr)
867 target_ulong pde_addr, pte_addr;
869 target_phys_addr_t paddr;
870 uint32_t page_offset;
873 if (env->cr[4] & CR4_PAE_MASK) {
874 target_ulong pdpe_addr;
878 if (env->hflags & HF_LMA_MASK) {
879 uint64_t pml4e_addr, pml4e;
882 /* test virtual address sign extension */
883 sext = (int64_t)addr >> 47;
884 if (sext != 0 && sext != -1)
887 pml4e_addr = ((env->cr[3] & ~0xfff) + (((addr >> 39) & 0x1ff) << 3)) &
889 pml4e = ldq_phys(pml4e_addr);
890 if (!(pml4e & PG_PRESENT_MASK))
893 pdpe_addr = ((pml4e & ~0xfff) + (((addr >> 30) & 0x1ff) << 3)) &
895 pdpe = ldq_phys(pdpe_addr);
896 if (!(pdpe & PG_PRESENT_MASK))
901 pdpe_addr = ((env->cr[3] & ~0x1f) + ((addr >> 27) & 0x18)) &
903 pdpe = ldq_phys(pdpe_addr);
904 if (!(pdpe & PG_PRESENT_MASK))
908 pde_addr = ((pdpe & ~0xfff) + (((addr >> 21) & 0x1ff) << 3)) &
910 pde = ldq_phys(pde_addr);
911 if (!(pde & PG_PRESENT_MASK)) {
914 if (pde & PG_PSE_MASK) {
916 page_size = 2048 * 1024;
917 pte = pde & ~( (page_size - 1) & ~0xfff); /* align to page_size */
920 pte_addr = ((pde & ~0xfff) + (((addr >> 12) & 0x1ff) << 3)) &
923 pte = ldq_phys(pte_addr);
925 if (!(pte & PG_PRESENT_MASK))
930 if (!(env->cr[0] & CR0_PG_MASK)) {
934 /* page directory entry */
935 pde_addr = ((env->cr[3] & ~0xfff) + ((addr >> 20) & 0xffc)) & env->a20_mask;
936 pde = ldl_phys(pde_addr);
937 if (!(pde & PG_PRESENT_MASK))
939 if ((pde & PG_PSE_MASK) && (env->cr[4] & CR4_PSE_MASK)) {
940 pte = pde & ~0x003ff000; /* align to 4MB */
941 page_size = 4096 * 1024;
943 /* page directory entry */
944 pte_addr = ((pde & ~0xfff) + ((addr >> 10) & 0xffc)) & env->a20_mask;
945 pte = ldl_phys(pte_addr);
946 if (!(pte & PG_PRESENT_MASK))
951 pte = pte & env->a20_mask;
954 page_offset = (addr & TARGET_PAGE_MASK) & (page_size - 1);
955 paddr = (pte & TARGET_PAGE_MASK) + page_offset;
959 void hw_breakpoint_insert(CPUState *env, int index)
963 switch (hw_breakpoint_type(env->dr[7], index)) {
965 if (hw_breakpoint_enabled(env->dr[7], index))
966 err = cpu_breakpoint_insert(env, env->dr[index], BP_CPU,
967 &env->cpu_breakpoint[index]);
970 type = BP_CPU | BP_MEM_WRITE;
973 /* No support for I/O watchpoints yet */
976 type = BP_CPU | BP_MEM_ACCESS;
978 err = cpu_watchpoint_insert(env, env->dr[index],
979 hw_breakpoint_len(env->dr[7], index),
980 type, &env->cpu_watchpoint[index]);
984 env->cpu_breakpoint[index] = NULL;
987 void hw_breakpoint_remove(CPUState *env, int index)
989 if (!env->cpu_breakpoint[index])
991 switch (hw_breakpoint_type(env->dr[7], index)) {
993 if (hw_breakpoint_enabled(env->dr[7], index))
994 cpu_breakpoint_remove_by_ref(env, env->cpu_breakpoint[index]);
998 cpu_watchpoint_remove_by_ref(env, env->cpu_watchpoint[index]);
1001 /* No support for I/O watchpoints yet */
1006 int check_hw_breakpoints(CPUState *env, int force_dr6_update)
1010 int hit_enabled = 0;
1012 dr6 = env->dr[6] & ~0xf;
1013 for (reg = 0; reg < 4; reg++) {
1014 type = hw_breakpoint_type(env->dr[7], reg);
1015 if ((type == 0 && env->dr[reg] == env->eip) ||
1016 ((type & 1) && env->cpu_watchpoint[reg] &&
1017 (env->cpu_watchpoint[reg]->flags & BP_WATCHPOINT_HIT))) {
1019 if (hw_breakpoint_enabled(env->dr[7], reg))
1023 if (hit_enabled || force_dr6_update)
1028 static CPUDebugExcpHandler *prev_debug_excp_handler;
1030 void raise_exception_env(int exception_index, CPUState *env);
1032 static void breakpoint_handler(CPUState *env)
1036 if (env->watchpoint_hit) {
1037 if (env->watchpoint_hit->flags & BP_CPU) {
1038 env->watchpoint_hit = NULL;
1039 if (check_hw_breakpoints(env, 0))
1040 raise_exception_env(EXCP01_DB, env);
1042 cpu_resume_from_signal(env, NULL);
1045 QTAILQ_FOREACH(bp, &env->breakpoints, entry)
1046 if (bp->pc == env->eip) {
1047 if (bp->flags & BP_CPU) {
1048 check_hw_breakpoints(env, 1);
1049 raise_exception_env(EXCP01_DB, env);
1054 if (prev_debug_excp_handler)
1055 prev_debug_excp_handler(env);
1058 typedef struct MCEInjectionParams {
1063 uint64_t mcg_status;
1067 } MCEInjectionParams;
1069 static void do_inject_x86_mce(void *data)
1071 MCEInjectionParams *params = data;
1072 CPUState *cenv = params->env;
1073 uint64_t *banks = cenv->mce_banks + 4 * params->bank;
1075 cpu_synchronize_state(cenv);
1078 * If there is an MCE exception being processed, ignore this SRAO MCE
1079 * unless unconditional injection was requested.
1081 if (!(params->flags & MCE_INJECT_UNCOND_AO)
1082 && !(params->status & MCI_STATUS_AR)
1083 && (cenv->mcg_status & MCG_STATUS_MCIP)) {
1087 if (params->status & MCI_STATUS_UC) {
1089 * if MSR_MCG_CTL is not all 1s, the uncorrected error
1090 * reporting is disabled
1092 if ((cenv->mcg_cap & MCG_CTL_P) && cenv->mcg_ctl != ~(uint64_t)0) {
1093 monitor_printf(params->mon,
1094 "CPU %d: Uncorrected error reporting disabled\n",
1100 * if MSR_MCi_CTL is not all 1s, the uncorrected error
1101 * reporting is disabled for the bank
1103 if (banks[0] != ~(uint64_t)0) {
1104 monitor_printf(params->mon,
1105 "CPU %d: Uncorrected error reporting disabled for"
1107 cenv->cpu_index, params->bank);
1111 if ((cenv->mcg_status & MCG_STATUS_MCIP) ||
1112 !(cenv->cr[4] & CR4_MCE_MASK)) {
1113 monitor_printf(params->mon,
1114 "CPU %d: Previous MCE still in progress, raising"
1117 qemu_log_mask(CPU_LOG_RESET, "Triple fault\n");
1118 qemu_system_reset_request();
1121 if (banks[1] & MCI_STATUS_VAL) {
1122 params->status |= MCI_STATUS_OVER;
1124 banks[2] = params->addr;
1125 banks[3] = params->misc;
1126 cenv->mcg_status = params->mcg_status;
1127 banks[1] = params->status;
1128 cpu_interrupt(cenv, CPU_INTERRUPT_MCE);
1129 } else if (!(banks[1] & MCI_STATUS_VAL)
1130 || !(banks[1] & MCI_STATUS_UC)) {
1131 if (banks[1] & MCI_STATUS_VAL) {
1132 params->status |= MCI_STATUS_OVER;
1134 banks[2] = params->addr;
1135 banks[3] = params->misc;
1136 banks[1] = params->status;
1138 banks[1] |= MCI_STATUS_OVER;
1142 void cpu_x86_inject_mce(Monitor *mon, CPUState *cenv, int bank,
1143 uint64_t status, uint64_t mcg_status, uint64_t addr,
1144 uint64_t misc, int flags)
1146 MCEInjectionParams params = {
1151 .mcg_status = mcg_status,
1156 unsigned bank_num = cenv->mcg_cap & 0xff;
1159 if (!cenv->mcg_cap) {
1160 monitor_printf(mon, "MCE injection not supported\n");
1163 if (bank >= bank_num) {
1164 monitor_printf(mon, "Invalid MCE bank number\n");
1167 if (!(status & MCI_STATUS_VAL)) {
1168 monitor_printf(mon, "Invalid MCE status code\n");
1171 if ((flags & MCE_INJECT_BROADCAST)
1172 && !cpu_x86_support_mca_broadcast(cenv)) {
1173 monitor_printf(mon, "Guest CPU does not support MCA broadcast\n");
1177 run_on_cpu(cenv, do_inject_x86_mce, ¶ms);
1178 if (flags & MCE_INJECT_BROADCAST) {
1180 params.status = MCI_STATUS_VAL | MCI_STATUS_UC;
1181 params.mcg_status = MCG_STATUS_MCIP | MCG_STATUS_RIPV;
1184 for (env = first_cpu; env != NULL; env = env->next_cpu) {
1189 run_on_cpu(cenv, do_inject_x86_mce, ¶ms);
1193 #endif /* !CONFIG_USER_ONLY */
1195 static void mce_init(CPUX86State *cenv)
1199 if (((cenv->cpuid_version >> 8) & 0xf) >= 6
1200 && (cenv->cpuid_features & (CPUID_MCE | CPUID_MCA)) ==
1201 (CPUID_MCE | CPUID_MCA)) {
1202 cenv->mcg_cap = MCE_CAP_DEF | MCE_BANKS_DEF;
1203 cenv->mcg_ctl = ~(uint64_t)0;
1204 for (bank = 0; bank < MCE_BANKS_DEF; bank++) {
1205 cenv->mce_banks[bank * 4] = ~(uint64_t)0;
1210 int cpu_x86_get_descr_debug(CPUX86State *env, unsigned int selector,
1211 target_ulong *base, unsigned int *limit,
1212 unsigned int *flags)
1223 index = selector & ~7;
1224 ptr = dt->base + index;
1225 if ((index + 7) > dt->limit
1226 || cpu_memory_rw_debug(env, ptr, (uint8_t *)&e1, sizeof(e1), 0) != 0
1227 || cpu_memory_rw_debug(env, ptr+4, (uint8_t *)&e2, sizeof(e2), 0) != 0)
1230 *base = ((e1 >> 16) | ((e2 & 0xff) << 16) | (e2 & 0xff000000));
1231 *limit = (e1 & 0xffff) | (e2 & 0x000f0000);
1232 if (e2 & DESC_G_MASK)
1233 *limit = (*limit << 12) | 0xfff;
1239 CPUX86State *cpu_x86_init(const char *cpu_model)
1244 env = qemu_mallocz(sizeof(CPUX86State));
1246 env->cpu_model_str = cpu_model;
1248 /* init various static tables */
1251 optimize_flags_init();
1252 #ifndef CONFIG_USER_ONLY
1253 prev_debug_excp_handler =
1254 cpu_set_debug_excp_handler(breakpoint_handler);
1257 if (cpu_x86_register(env, cpu_model) < 0) {
1263 qemu_init_vcpu(env);
1268 #if !defined(CONFIG_USER_ONLY)
1269 void do_cpu_init(CPUState *env)
1271 int sipi = env->interrupt_request & CPU_INTERRUPT_SIPI;
1272 uint64_t pat = env->pat;
1275 env->interrupt_request = sipi;
1277 apic_init_reset(env->apic_state);
1278 env->halted = !cpu_is_bsp(env);
1281 void do_cpu_sipi(CPUState *env)
1283 apic_sipi(env->apic_state);
1286 void do_cpu_init(CPUState *env)
1289 void do_cpu_sipi(CPUState *env)