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, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301 USA
30 #include "qemu-common.h"
35 static void add_flagname_to_bitmaps(char *flagname, uint32_t *features,
36 uint32_t *ext_features,
37 uint32_t *ext2_features,
38 uint32_t *ext3_features)
41 /* feature flags taken from "Intel Processor Identification and the CPUID
42 * Instruction" and AMD's "CPUID Specification". In cases of disagreement
43 * about feature names, the Linux name is used. */
44 static const char *feature_name[] = {
45 "fpu", "vme", "de", "pse", "tsc", "msr", "pae", "mce",
46 "cx8", "apic", NULL, "sep", "mtrr", "pge", "mca", "cmov",
47 "pat", "pse36", "pn" /* Intel psn */, "clflush" /* Intel clfsh */, NULL, "ds" /* Intel dts */, "acpi", "mmx",
48 "fxsr", "sse", "sse2", "ss", "ht" /* Intel htt */, "tm", "ia64", "pbe",
50 static const char *ext_feature_name[] = {
51 "pni" /* Intel,AMD sse3 */, NULL, NULL, "monitor", "ds_cpl", "vmx", NULL /* Linux smx */, "est",
52 "tm2", "ssse3", "cid", NULL, NULL, "cx16", "xtpr", NULL,
53 NULL, NULL, "dca", NULL, NULL, NULL, NULL, "popcnt",
54 NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
56 static const char *ext2_feature_name[] = {
57 "fpu", "vme", "de", "pse", "tsc", "msr", "pae", "mce",
58 "cx8" /* AMD CMPXCHG8B */, "apic", NULL, "syscall", "mttr", "pge", "mca", "cmov",
59 "pat", "pse36", NULL, NULL /* Linux mp */, "nx" /* Intel xd */, NULL, "mmxext", "mmx",
60 "fxsr", "fxsr_opt" /* AMD ffxsr */, "pdpe1gb" /* AMD Page1GB */, "rdtscp", NULL, "lm" /* Intel 64 */, "3dnowext", "3dnow",
62 static const char *ext3_feature_name[] = {
63 "lahf_lm" /* AMD LahfSahf */, "cmp_legacy", "svm", "extapic" /* AMD ExtApicSpace */, "cr8legacy" /* AMD AltMovCr8 */, "abm", "sse4a", "misalignsse",
64 "3dnowprefetch", "osvw", NULL /* Linux ibs */, NULL, "skinit", "wdt", NULL, NULL,
65 NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
66 NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
69 for ( i = 0 ; i < 32 ; i++ )
70 if (feature_name[i] && !strcmp (flagname, feature_name[i])) {
74 for ( i = 0 ; i < 32 ; i++ )
75 if (ext_feature_name[i] && !strcmp (flagname, ext_feature_name[i])) {
76 *ext_features |= 1 << i;
79 for ( i = 0 ; i < 32 ; i++ )
80 if (ext2_feature_name[i] && !strcmp (flagname, ext2_feature_name[i])) {
81 *ext2_features |= 1 << i;
84 for ( i = 0 ; i < 32 ; i++ )
85 if (ext3_feature_name[i] && !strcmp (flagname, ext3_feature_name[i])) {
86 *ext3_features |= 1 << i;
89 fprintf(stderr, "CPU feature %s not found\n", flagname);
92 typedef struct x86_def_t {
95 uint32_t vendor1, vendor2, vendor3;
99 uint32_t features, ext_features, ext2_features, ext3_features;
104 #define I486_FEATURES (CPUID_FP87 | CPUID_VME | CPUID_PSE)
105 #define PENTIUM_FEATURES (I486_FEATURES | CPUID_DE | CPUID_TSC | \
106 CPUID_MSR | CPUID_MCE | CPUID_CX8 | CPUID_MMX)
107 #define PENTIUM2_FEATURES (PENTIUM_FEATURES | CPUID_PAE | CPUID_SEP | \
108 CPUID_MTRR | CPUID_PGE | CPUID_MCA | CPUID_CMOV | CPUID_PAT | \
109 CPUID_PSE36 | CPUID_FXSR)
110 #define PENTIUM3_FEATURES (PENTIUM2_FEATURES | CPUID_SSE)
111 #define PPRO_FEATURES (CPUID_FP87 | CPUID_DE | CPUID_PSE | CPUID_TSC | \
112 CPUID_MSR | CPUID_MCE | CPUID_CX8 | CPUID_PGE | CPUID_CMOV | \
113 CPUID_PAT | CPUID_FXSR | CPUID_MMX | CPUID_SSE | CPUID_SSE2 | \
114 CPUID_PAE | CPUID_SEP | CPUID_APIC)
115 static x86_def_t x86_defs[] = {
120 .vendor1 = CPUID_VENDOR_AMD_1,
121 .vendor2 = CPUID_VENDOR_AMD_2,
122 .vendor3 = CPUID_VENDOR_AMD_3,
126 .features = PPRO_FEATURES |
127 /* these features are needed for Win64 and aren't fully implemented */
128 CPUID_MTRR | CPUID_CLFLUSH | CPUID_MCA |
129 /* this feature is needed for Solaris and isn't fully implemented */
131 .ext_features = CPUID_EXT_SSE3,
132 .ext2_features = (PPRO_FEATURES & 0x0183F3FF) |
133 CPUID_EXT2_LM | CPUID_EXT2_SYSCALL | CPUID_EXT2_NX |
134 CPUID_EXT2_3DNOW | CPUID_EXT2_3DNOWEXT,
135 .ext3_features = CPUID_EXT3_SVM,
136 .xlevel = 0x8000000A,
137 .model_id = "QEMU Virtual CPU version " QEMU_VERSION,
145 /* The original CPU also implements these features:
146 CPUID_VME, CPUID_DTS, CPUID_ACPI, CPUID_SS, CPUID_HT,
147 CPUID_TM, CPUID_PBE */
148 .features = PPRO_FEATURES |
149 CPUID_MTRR | CPUID_CLFLUSH | CPUID_MCA |
151 /* The original CPU also implements these ext features:
152 CPUID_EXT_DTES64, CPUID_EXT_DSCPL, CPUID_EXT_VMX, CPUID_EXT_EST,
153 CPUID_EXT_TM2, CPUID_EXT_CX16, CPUID_EXT_XTPR, CPUID_EXT_PDCM */
154 .ext_features = CPUID_EXT_SSE3 | CPUID_EXT_MONITOR | CPUID_EXT_SSSE3,
155 .ext2_features = CPUID_EXT2_LM | CPUID_EXT2_SYSCALL | CPUID_EXT2_NX,
156 /* Missing: .ext3_features = CPUID_EXT3_LAHF_LM */
157 .xlevel = 0x80000008,
158 .model_id = "Intel(R) Core(TM)2 Duo CPU T7700 @ 2.40GHz",
167 .features = PPRO_FEATURES,
168 .ext_features = CPUID_EXT_SSE3,
170 .model_id = "QEMU Virtual CPU version " QEMU_VERSION,
178 /* The original CPU also implements these features:
179 CPUID_DTS, CPUID_ACPI, CPUID_SS, CPUID_HT,
180 CPUID_TM, CPUID_PBE */
181 .features = PPRO_FEATURES | CPUID_VME |
182 CPUID_MTRR | CPUID_CLFLUSH | CPUID_MCA,
183 /* The original CPU also implements these ext features:
184 CPUID_EXT_VMX, CPUID_EXT_EST, CPUID_EXT_TM2, CPUID_EXT_XTPR,
186 .ext_features = CPUID_EXT_SSE3 | CPUID_EXT_MONITOR,
187 .ext2_features = CPUID_EXT2_NX,
188 .xlevel = 0x80000008,
189 .model_id = "Genuine Intel(R) CPU T2600 @ 2.16GHz",
197 .features = I486_FEATURES,
206 .features = PENTIUM_FEATURES,
215 .features = PENTIUM2_FEATURES,
224 .features = PENTIUM3_FEATURES,
230 .vendor1 = 0x68747541, /* "Auth" */
231 .vendor2 = 0x69746e65, /* "enti" */
232 .vendor3 = 0x444d4163, /* "cAMD" */
236 .features = PPRO_FEATURES | CPUID_PSE36 | CPUID_VME | CPUID_MTRR | CPUID_MCA,
237 .ext2_features = (PPRO_FEATURES & 0x0183F3FF) | CPUID_EXT2_MMXEXT | CPUID_EXT2_3DNOW | CPUID_EXT2_3DNOWEXT,
238 .xlevel = 0x80000008,
239 /* XXX: put another string ? */
240 .model_id = "QEMU Virtual CPU version " QEMU_VERSION,
244 /* original is on level 10 */
249 .features = PPRO_FEATURES |
250 CPUID_MTRR | CPUID_CLFLUSH | CPUID_MCA | CPUID_VME,
251 /* Missing: CPUID_DTS | CPUID_ACPI | CPUID_SS |
252 * CPUID_HT | CPUID_TM | CPUID_PBE */
253 /* Some CPUs got no CPUID_SEP */
254 .ext_features = CPUID_EXT_MONITOR |
255 CPUID_EXT_SSE3 /* PNI */ | CPUID_EXT_SSSE3,
256 /* Missing: CPUID_EXT_DSCPL | CPUID_EXT_EST |
257 * CPUID_EXT_TM2 | CPUID_EXT_XTPR */
258 .ext2_features = (PPRO_FEATURES & 0x0183F3FF) | CPUID_EXT2_NX,
259 /* Missing: .ext3_features = CPUID_EXT3_LAHF_LM */
260 .xlevel = 0x8000000A,
261 .model_id = "Intel(R) Atom(TM) CPU N270 @ 1.60GHz",
265 static int cpu_x86_find_by_name(x86_def_t *x86_cpu_def, const char *cpu_model)
270 char *s = strdup(cpu_model);
271 char *featurestr, *name = strtok(s, ",");
272 uint32_t plus_features = 0, plus_ext_features = 0, plus_ext2_features = 0, plus_ext3_features = 0;
273 uint32_t minus_features = 0, minus_ext_features = 0, minus_ext2_features = 0, minus_ext3_features = 0;
274 int family = -1, model = -1, stepping = -1;
277 for (i = 0; i < ARRAY_SIZE(x86_defs); i++) {
278 if (strcmp(name, x86_defs[i].name) == 0) {
285 memcpy(x86_cpu_def, def, sizeof(*def));
287 featurestr = strtok(NULL, ",");
291 if (featurestr[0] == '+') {
292 add_flagname_to_bitmaps(featurestr + 1, &plus_features, &plus_ext_features, &plus_ext2_features, &plus_ext3_features);
293 } else if (featurestr[0] == '-') {
294 add_flagname_to_bitmaps(featurestr + 1, &minus_features, &minus_ext_features, &minus_ext2_features, &minus_ext3_features);
295 } else if ((val = strchr(featurestr, '='))) {
297 if (!strcmp(featurestr, "family")) {
299 family = strtol(val, &err, 10);
300 if (!*val || *err || family < 0) {
301 fprintf(stderr, "bad numerical value %s\n", val);
304 x86_cpu_def->family = family;
305 } else if (!strcmp(featurestr, "model")) {
307 model = strtol(val, &err, 10);
308 if (!*val || *err || model < 0 || model > 0xff) {
309 fprintf(stderr, "bad numerical value %s\n", val);
312 x86_cpu_def->model = model;
313 } else if (!strcmp(featurestr, "stepping")) {
315 stepping = strtol(val, &err, 10);
316 if (!*val || *err || stepping < 0 || stepping > 0xf) {
317 fprintf(stderr, "bad numerical value %s\n", val);
320 x86_cpu_def->stepping = stepping;
321 } else if (!strcmp(featurestr, "vendor")) {
322 if (strlen(val) != 12) {
323 fprintf(stderr, "vendor string must be 12 chars long\n");
326 x86_cpu_def->vendor1 = 0;
327 x86_cpu_def->vendor2 = 0;
328 x86_cpu_def->vendor3 = 0;
329 for(i = 0; i < 4; i++) {
330 x86_cpu_def->vendor1 |= ((uint8_t)val[i ]) << (8 * i);
331 x86_cpu_def->vendor2 |= ((uint8_t)val[i + 4]) << (8 * i);
332 x86_cpu_def->vendor3 |= ((uint8_t)val[i + 8]) << (8 * i);
334 } else if (!strcmp(featurestr, "model_id")) {
335 pstrcpy(x86_cpu_def->model_id, sizeof(x86_cpu_def->model_id),
338 fprintf(stderr, "unrecognized feature %s\n", featurestr);
342 fprintf(stderr, "feature string `%s' not in format (+feature|-feature|feature=xyz)\n", featurestr);
345 featurestr = strtok(NULL, ",");
347 x86_cpu_def->features |= plus_features;
348 x86_cpu_def->ext_features |= plus_ext_features;
349 x86_cpu_def->ext2_features |= plus_ext2_features;
350 x86_cpu_def->ext3_features |= plus_ext3_features;
351 x86_cpu_def->features &= ~minus_features;
352 x86_cpu_def->ext_features &= ~minus_ext_features;
353 x86_cpu_def->ext2_features &= ~minus_ext2_features;
354 x86_cpu_def->ext3_features &= ~minus_ext3_features;
363 void x86_cpu_list (FILE *f, int (*cpu_fprintf)(FILE *f, const char *fmt, ...))
367 for (i = 0; i < ARRAY_SIZE(x86_defs); i++)
368 (*cpu_fprintf)(f, "x86 %16s\n", x86_defs[i].name);
371 static int cpu_x86_register (CPUX86State *env, const char *cpu_model)
373 x86_def_t def1, *def = &def1;
375 if (cpu_x86_find_by_name(def, cpu_model) < 0)
378 env->cpuid_vendor1 = def->vendor1;
379 env->cpuid_vendor2 = def->vendor2;
380 env->cpuid_vendor3 = def->vendor3;
382 env->cpuid_vendor1 = CPUID_VENDOR_INTEL_1;
383 env->cpuid_vendor2 = CPUID_VENDOR_INTEL_2;
384 env->cpuid_vendor3 = CPUID_VENDOR_INTEL_3;
386 env->cpuid_level = def->level;
387 if (def->family > 0x0f)
388 env->cpuid_version = 0xf00 | ((def->family - 0x0f) << 20);
390 env->cpuid_version = def->family << 8;
391 env->cpuid_version |= ((def->model & 0xf) << 4) | ((def->model >> 4) << 16);
392 env->cpuid_version |= def->stepping;
393 env->cpuid_features = def->features;
394 env->pat = 0x0007040600070406ULL;
395 env->cpuid_ext_features = def->ext_features;
396 env->cpuid_ext2_features = def->ext2_features;
397 env->cpuid_xlevel = def->xlevel;
398 env->cpuid_ext3_features = def->ext3_features;
400 const char *model_id = def->model_id;
404 len = strlen(model_id);
405 for(i = 0; i < 48; i++) {
409 c = (uint8_t)model_id[i];
410 env->cpuid_model[i >> 2] |= c << (8 * (i & 3));
416 /* NOTE: must be called outside the CPU execute loop */
417 void cpu_reset(CPUX86State *env)
421 memset(env, 0, offsetof(CPUX86State, breakpoints));
425 env->old_exception = -1;
427 /* init to reset state */
429 #ifdef CONFIG_SOFTMMU
430 env->hflags |= HF_SOFTMMU_MASK;
432 env->hflags2 |= HF2_GIF_MASK;
434 cpu_x86_update_cr0(env, 0x60000010);
435 env->a20_mask = ~0x0;
436 env->smbase = 0x30000;
438 env->idt.limit = 0xffff;
439 env->gdt.limit = 0xffff;
440 env->ldt.limit = 0xffff;
441 env->ldt.flags = DESC_P_MASK | (2 << DESC_TYPE_SHIFT);
442 env->tr.limit = 0xffff;
443 env->tr.flags = DESC_P_MASK | (11 << DESC_TYPE_SHIFT);
445 cpu_x86_load_seg_cache(env, R_CS, 0xf000, 0xffff0000, 0xffff,
446 DESC_P_MASK | DESC_S_MASK | DESC_CS_MASK | DESC_R_MASK);
447 cpu_x86_load_seg_cache(env, R_DS, 0, 0, 0xffff,
448 DESC_P_MASK | DESC_S_MASK | DESC_W_MASK);
449 cpu_x86_load_seg_cache(env, R_ES, 0, 0, 0xffff,
450 DESC_P_MASK | DESC_S_MASK | DESC_W_MASK);
451 cpu_x86_load_seg_cache(env, R_SS, 0, 0, 0xffff,
452 DESC_P_MASK | DESC_S_MASK | DESC_W_MASK);
453 cpu_x86_load_seg_cache(env, R_FS, 0, 0, 0xffff,
454 DESC_P_MASK | DESC_S_MASK | DESC_W_MASK);
455 cpu_x86_load_seg_cache(env, R_GS, 0, 0, 0xffff,
456 DESC_P_MASK | DESC_S_MASK | DESC_W_MASK);
459 env->regs[R_EDX] = env->cpuid_version;
464 for(i = 0;i < 8; i++)
470 memset(env->dr, 0, sizeof(env->dr));
471 env->dr[6] = DR6_FIXED_1;
472 env->dr[7] = DR7_FIXED_1;
473 cpu_breakpoint_remove_all(env, BP_CPU);
474 cpu_watchpoint_remove_all(env, BP_CPU);
477 void cpu_x86_close(CPUX86State *env)
482 /***********************************************************/
485 static const char *cc_op_str[] = {
540 void cpu_dump_state(CPUState *env, FILE *f,
541 int (*cpu_fprintf)(FILE *f, const char *fmt, ...),
546 static const char *seg_name[6] = { "ES", "CS", "SS", "DS", "FS", "GS" };
548 eflags = env->eflags;
550 if (env->hflags & HF_CS64_MASK) {
552 "RAX=%016" PRIx64 " RBX=%016" PRIx64 " RCX=%016" PRIx64 " RDX=%016" PRIx64 "\n"
553 "RSI=%016" PRIx64 " RDI=%016" PRIx64 " RBP=%016" PRIx64 " RSP=%016" PRIx64 "\n"
554 "R8 =%016" PRIx64 " R9 =%016" PRIx64 " R10=%016" PRIx64 " R11=%016" PRIx64 "\n"
555 "R12=%016" PRIx64 " R13=%016" PRIx64 " R14=%016" PRIx64 " R15=%016" PRIx64 "\n"
556 "RIP=%016" PRIx64 " RFL=%08x [%c%c%c%c%c%c%c] CPL=%d II=%d A20=%d SMM=%d HLT=%d\n",
574 eflags & DF_MASK ? 'D' : '-',
575 eflags & CC_O ? 'O' : '-',
576 eflags & CC_S ? 'S' : '-',
577 eflags & CC_Z ? 'Z' : '-',
578 eflags & CC_A ? 'A' : '-',
579 eflags & CC_P ? 'P' : '-',
580 eflags & CC_C ? 'C' : '-',
581 env->hflags & HF_CPL_MASK,
582 (env->hflags >> HF_INHIBIT_IRQ_SHIFT) & 1,
583 (int)(env->a20_mask >> 20) & 1,
584 (env->hflags >> HF_SMM_SHIFT) & 1,
589 cpu_fprintf(f, "EAX=%08x EBX=%08x ECX=%08x EDX=%08x\n"
590 "ESI=%08x EDI=%08x EBP=%08x ESP=%08x\n"
591 "EIP=%08x EFL=%08x [%c%c%c%c%c%c%c] CPL=%d II=%d A20=%d SMM=%d HLT=%d\n",
592 (uint32_t)env->regs[R_EAX],
593 (uint32_t)env->regs[R_EBX],
594 (uint32_t)env->regs[R_ECX],
595 (uint32_t)env->regs[R_EDX],
596 (uint32_t)env->regs[R_ESI],
597 (uint32_t)env->regs[R_EDI],
598 (uint32_t)env->regs[R_EBP],
599 (uint32_t)env->regs[R_ESP],
600 (uint32_t)env->eip, eflags,
601 eflags & DF_MASK ? 'D' : '-',
602 eflags & CC_O ? 'O' : '-',
603 eflags & CC_S ? 'S' : '-',
604 eflags & CC_Z ? 'Z' : '-',
605 eflags & CC_A ? 'A' : '-',
606 eflags & CC_P ? 'P' : '-',
607 eflags & CC_C ? 'C' : '-',
608 env->hflags & HF_CPL_MASK,
609 (env->hflags >> HF_INHIBIT_IRQ_SHIFT) & 1,
610 (int)(env->a20_mask >> 20) & 1,
611 (env->hflags >> HF_SMM_SHIFT) & 1,
616 if (env->hflags & HF_LMA_MASK) {
617 for(i = 0; i < 6; i++) {
618 SegmentCache *sc = &env->segs[i];
619 cpu_fprintf(f, "%s =%04x %016" PRIx64 " %08x %08x\n",
626 cpu_fprintf(f, "LDT=%04x %016" PRIx64 " %08x %08x\n",
631 cpu_fprintf(f, "TR =%04x %016" PRIx64 " %08x %08x\n",
636 cpu_fprintf(f, "GDT= %016" PRIx64 " %08x\n",
637 env->gdt.base, env->gdt.limit);
638 cpu_fprintf(f, "IDT= %016" PRIx64 " %08x\n",
639 env->idt.base, env->idt.limit);
640 cpu_fprintf(f, "CR0=%08x CR2=%016" PRIx64 " CR3=%016" PRIx64 " CR4=%08x\n",
641 (uint32_t)env->cr[0],
644 (uint32_t)env->cr[4]);
645 for(i = 0; i < 4; i++)
646 cpu_fprintf(f, "DR%d=%016" PRIx64 " ", i, env->dr[i]);
647 cpu_fprintf(f, "\nDR6=%016" PRIx64 " DR7=%016" PRIx64 "\n",
648 env->dr[6], env->dr[7]);
652 for(i = 0; i < 6; i++) {
653 SegmentCache *sc = &env->segs[i];
654 cpu_fprintf(f, "%s =%04x %08x %08x %08x\n",
661 cpu_fprintf(f, "LDT=%04x %08x %08x %08x\n",
663 (uint32_t)env->ldt.base,
666 cpu_fprintf(f, "TR =%04x %08x %08x %08x\n",
668 (uint32_t)env->tr.base,
671 cpu_fprintf(f, "GDT= %08x %08x\n",
672 (uint32_t)env->gdt.base, env->gdt.limit);
673 cpu_fprintf(f, "IDT= %08x %08x\n",
674 (uint32_t)env->idt.base, env->idt.limit);
675 cpu_fprintf(f, "CR0=%08x CR2=%08x CR3=%08x CR4=%08x\n",
676 (uint32_t)env->cr[0],
677 (uint32_t)env->cr[2],
678 (uint32_t)env->cr[3],
679 (uint32_t)env->cr[4]);
680 for(i = 0; i < 4; i++)
681 cpu_fprintf(f, "DR%d=%08x ", i, env->dr[i]);
682 cpu_fprintf(f, "\nDR6=%08x DR7=%08x\n", env->dr[6], env->dr[7]);
684 if (flags & X86_DUMP_CCOP) {
685 if ((unsigned)env->cc_op < CC_OP_NB)
686 snprintf(cc_op_name, sizeof(cc_op_name), "%s", cc_op_str[env->cc_op]);
688 snprintf(cc_op_name, sizeof(cc_op_name), "[%d]", env->cc_op);
690 if (env->hflags & HF_CS64_MASK) {
691 cpu_fprintf(f, "CCS=%016" PRIx64 " CCD=%016" PRIx64 " CCO=%-8s\n",
692 env->cc_src, env->cc_dst,
697 cpu_fprintf(f, "CCS=%08x CCD=%08x CCO=%-8s\n",
698 (uint32_t)env->cc_src, (uint32_t)env->cc_dst,
702 if (flags & X86_DUMP_FPU) {
705 for(i = 0; i < 8; i++) {
706 fptag |= ((!env->fptags[i]) << i);
708 cpu_fprintf(f, "FCW=%04x FSW=%04x [ST=%d] FTW=%02x MXCSR=%08x\n",
710 (env->fpus & ~0x3800) | (env->fpstt & 0x7) << 11,
715 #if defined(USE_X86LDOUBLE)
723 tmp.d = env->fpregs[i].d;
724 cpu_fprintf(f, "FPR%d=%016" PRIx64 " %04x",
725 i, tmp.l.lower, tmp.l.upper);
727 cpu_fprintf(f, "FPR%d=%016" PRIx64,
728 i, env->fpregs[i].mmx.q);
731 cpu_fprintf(f, "\n");
735 if (env->hflags & HF_CS64_MASK)
740 cpu_fprintf(f, "XMM%02d=%08x%08x%08x%08x",
742 env->xmm_regs[i].XMM_L(3),
743 env->xmm_regs[i].XMM_L(2),
744 env->xmm_regs[i].XMM_L(1),
745 env->xmm_regs[i].XMM_L(0));
747 cpu_fprintf(f, "\n");
754 /***********************************************************/
756 /* XXX: add PGE support */
758 void cpu_x86_set_a20(CPUX86State *env, int a20_state)
760 a20_state = (a20_state != 0);
761 if (a20_state != ((env->a20_mask >> 20) & 1)) {
762 #if defined(DEBUG_MMU)
763 printf("A20 update: a20=%d\n", a20_state);
765 /* if the cpu is currently executing code, we must unlink it and
766 all the potentially executing TB */
767 cpu_interrupt(env, CPU_INTERRUPT_EXITTB);
769 /* when a20 is changed, all the MMU mappings are invalid, so
770 we must flush everything */
772 env->a20_mask = (~0x100000) | (a20_state << 20);
776 void cpu_x86_update_cr0(CPUX86State *env, uint32_t new_cr0)
780 #if defined(DEBUG_MMU)
781 printf("CR0 update: CR0=0x%08x\n", new_cr0);
783 if ((new_cr0 & (CR0_PG_MASK | CR0_WP_MASK | CR0_PE_MASK)) !=
784 (env->cr[0] & (CR0_PG_MASK | CR0_WP_MASK | CR0_PE_MASK))) {
789 if (!(env->cr[0] & CR0_PG_MASK) && (new_cr0 & CR0_PG_MASK) &&
790 (env->efer & MSR_EFER_LME)) {
791 /* enter in long mode */
792 /* XXX: generate an exception */
793 if (!(env->cr[4] & CR4_PAE_MASK))
795 env->efer |= MSR_EFER_LMA;
796 env->hflags |= HF_LMA_MASK;
797 } else if ((env->cr[0] & CR0_PG_MASK) && !(new_cr0 & CR0_PG_MASK) &&
798 (env->efer & MSR_EFER_LMA)) {
800 env->efer &= ~MSR_EFER_LMA;
801 env->hflags &= ~(HF_LMA_MASK | HF_CS64_MASK);
802 env->eip &= 0xffffffff;
805 env->cr[0] = new_cr0 | CR0_ET_MASK;
807 /* update PE flag in hidden flags */
808 pe_state = (env->cr[0] & CR0_PE_MASK);
809 env->hflags = (env->hflags & ~HF_PE_MASK) | (pe_state << HF_PE_SHIFT);
810 /* ensure that ADDSEG is always set in real mode */
811 env->hflags |= ((pe_state ^ 1) << HF_ADDSEG_SHIFT);
812 /* update FPU flags */
813 env->hflags = (env->hflags & ~(HF_MP_MASK | HF_EM_MASK | HF_TS_MASK)) |
814 ((new_cr0 << (HF_MP_SHIFT - 1)) & (HF_MP_MASK | HF_EM_MASK | HF_TS_MASK));
817 /* XXX: in legacy PAE mode, generate a GPF if reserved bits are set in
819 void cpu_x86_update_cr3(CPUX86State *env, target_ulong new_cr3)
821 env->cr[3] = new_cr3;
822 if (env->cr[0] & CR0_PG_MASK) {
823 #if defined(DEBUG_MMU)
824 printf("CR3 update: CR3=" TARGET_FMT_lx "\n", new_cr3);
830 void cpu_x86_update_cr4(CPUX86State *env, uint32_t new_cr4)
832 #if defined(DEBUG_MMU)
833 printf("CR4 update: CR4=%08x\n", (uint32_t)env->cr[4]);
835 if ((new_cr4 & (CR4_PGE_MASK | CR4_PAE_MASK | CR4_PSE_MASK)) !=
836 (env->cr[4] & (CR4_PGE_MASK | CR4_PAE_MASK | CR4_PSE_MASK))) {
840 if (!(env->cpuid_features & CPUID_SSE))
841 new_cr4 &= ~CR4_OSFXSR_MASK;
842 if (new_cr4 & CR4_OSFXSR_MASK)
843 env->hflags |= HF_OSFXSR_MASK;
845 env->hflags &= ~HF_OSFXSR_MASK;
847 env->cr[4] = new_cr4;
850 #if defined(CONFIG_USER_ONLY)
852 int cpu_x86_handle_mmu_fault(CPUX86State *env, target_ulong addr,
853 int is_write, int mmu_idx, int is_softmmu)
855 /* user mode only emulation */
858 env->error_code = (is_write << PG_ERROR_W_BIT);
859 env->error_code |= PG_ERROR_U_MASK;
860 env->exception_index = EXCP0E_PAGE;
864 target_phys_addr_t cpu_get_phys_page_debug(CPUState *env, target_ulong addr)
871 /* XXX: This value should match the one returned by CPUID
873 #if defined(USE_KQEMU)
874 #define PHYS_ADDR_MASK 0xfffff000LL
876 # if defined(TARGET_X86_64)
877 # define PHYS_ADDR_MASK 0xfffffff000LL
879 # define PHYS_ADDR_MASK 0xffffff000LL
884 -1 = cannot handle fault
885 0 = nothing more to do
886 1 = generate PF fault
887 2 = soft MMU activation required for this block
889 int cpu_x86_handle_mmu_fault(CPUX86State *env, target_ulong addr,
890 int is_write1, int mmu_idx, int is_softmmu)
893 target_ulong pde_addr, pte_addr;
894 int error_code, is_dirty, prot, page_size, ret, is_write, is_user;
895 target_phys_addr_t paddr;
896 uint32_t page_offset;
897 target_ulong vaddr, virt_addr;
899 is_user = mmu_idx == MMU_USER_IDX;
900 #if defined(DEBUG_MMU)
901 printf("MMU fault: addr=" TARGET_FMT_lx " w=%d u=%d eip=" TARGET_FMT_lx "\n",
902 addr, is_write1, is_user, env->eip);
904 is_write = is_write1 & 1;
906 if (!(env->cr[0] & CR0_PG_MASK)) {
908 virt_addr = addr & TARGET_PAGE_MASK;
909 prot = PAGE_READ | PAGE_WRITE | PAGE_EXEC;
914 if (env->cr[4] & CR4_PAE_MASK) {
916 target_ulong pdpe_addr;
919 if (env->hflags & HF_LMA_MASK) {
920 uint64_t pml4e_addr, pml4e;
923 /* test virtual address sign extension */
924 sext = (int64_t)addr >> 47;
925 if (sext != 0 && sext != -1) {
927 env->exception_index = EXCP0D_GPF;
931 pml4e_addr = ((env->cr[3] & ~0xfff) + (((addr >> 39) & 0x1ff) << 3)) &
933 pml4e = ldq_phys(pml4e_addr);
934 if (!(pml4e & PG_PRESENT_MASK)) {
938 if (!(env->efer & MSR_EFER_NXE) && (pml4e & PG_NX_MASK)) {
939 error_code = PG_ERROR_RSVD_MASK;
942 if (!(pml4e & PG_ACCESSED_MASK)) {
943 pml4e |= PG_ACCESSED_MASK;
944 stl_phys_notdirty(pml4e_addr, pml4e);
946 ptep = pml4e ^ PG_NX_MASK;
947 pdpe_addr = ((pml4e & PHYS_ADDR_MASK) + (((addr >> 30) & 0x1ff) << 3)) &
949 pdpe = ldq_phys(pdpe_addr);
950 if (!(pdpe & PG_PRESENT_MASK)) {
954 if (!(env->efer & MSR_EFER_NXE) && (pdpe & PG_NX_MASK)) {
955 error_code = PG_ERROR_RSVD_MASK;
958 ptep &= pdpe ^ PG_NX_MASK;
959 if (!(pdpe & PG_ACCESSED_MASK)) {
960 pdpe |= PG_ACCESSED_MASK;
961 stl_phys_notdirty(pdpe_addr, pdpe);
966 /* XXX: load them when cr3 is loaded ? */
967 pdpe_addr = ((env->cr[3] & ~0x1f) + ((addr >> 27) & 0x18)) &
969 pdpe = ldq_phys(pdpe_addr);
970 if (!(pdpe & PG_PRESENT_MASK)) {
974 ptep = PG_NX_MASK | PG_USER_MASK | PG_RW_MASK;
977 pde_addr = ((pdpe & PHYS_ADDR_MASK) + (((addr >> 21) & 0x1ff) << 3)) &
979 pde = ldq_phys(pde_addr);
980 if (!(pde & PG_PRESENT_MASK)) {
984 if (!(env->efer & MSR_EFER_NXE) && (pde & PG_NX_MASK)) {
985 error_code = PG_ERROR_RSVD_MASK;
988 ptep &= pde ^ PG_NX_MASK;
989 if (pde & PG_PSE_MASK) {
991 page_size = 2048 * 1024;
993 if ((ptep & PG_NX_MASK) && is_write1 == 2)
994 goto do_fault_protect;
996 if (!(ptep & PG_USER_MASK))
997 goto do_fault_protect;
998 if (is_write && !(ptep & PG_RW_MASK))
999 goto do_fault_protect;
1001 if ((env->cr[0] & CR0_WP_MASK) &&
1002 is_write && !(ptep & PG_RW_MASK))
1003 goto do_fault_protect;
1005 is_dirty = is_write && !(pde & PG_DIRTY_MASK);
1006 if (!(pde & PG_ACCESSED_MASK) || is_dirty) {
1007 pde |= PG_ACCESSED_MASK;
1009 pde |= PG_DIRTY_MASK;
1010 stl_phys_notdirty(pde_addr, pde);
1012 /* align to page_size */
1013 pte = pde & ((PHYS_ADDR_MASK & ~(page_size - 1)) | 0xfff);
1014 virt_addr = addr & ~(page_size - 1);
1017 if (!(pde & PG_ACCESSED_MASK)) {
1018 pde |= PG_ACCESSED_MASK;
1019 stl_phys_notdirty(pde_addr, pde);
1021 pte_addr = ((pde & PHYS_ADDR_MASK) + (((addr >> 12) & 0x1ff) << 3)) &
1023 pte = ldq_phys(pte_addr);
1024 if (!(pte & PG_PRESENT_MASK)) {
1028 if (!(env->efer & MSR_EFER_NXE) && (pte & PG_NX_MASK)) {
1029 error_code = PG_ERROR_RSVD_MASK;
1032 /* combine pde and pte nx, user and rw protections */
1033 ptep &= pte ^ PG_NX_MASK;
1035 if ((ptep & PG_NX_MASK) && is_write1 == 2)
1036 goto do_fault_protect;
1038 if (!(ptep & PG_USER_MASK))
1039 goto do_fault_protect;
1040 if (is_write && !(ptep & PG_RW_MASK))
1041 goto do_fault_protect;
1043 if ((env->cr[0] & CR0_WP_MASK) &&
1044 is_write && !(ptep & PG_RW_MASK))
1045 goto do_fault_protect;
1047 is_dirty = is_write && !(pte & PG_DIRTY_MASK);
1048 if (!(pte & PG_ACCESSED_MASK) || is_dirty) {
1049 pte |= PG_ACCESSED_MASK;
1051 pte |= PG_DIRTY_MASK;
1052 stl_phys_notdirty(pte_addr, pte);
1055 virt_addr = addr & ~0xfff;
1056 pte = pte & (PHYS_ADDR_MASK | 0xfff);
1061 /* page directory entry */
1062 pde_addr = ((env->cr[3] & ~0xfff) + ((addr >> 20) & 0xffc)) &
1064 pde = ldl_phys(pde_addr);
1065 if (!(pde & PG_PRESENT_MASK)) {
1069 /* if PSE bit is set, then we use a 4MB page */
1070 if ((pde & PG_PSE_MASK) && (env->cr[4] & CR4_PSE_MASK)) {
1071 page_size = 4096 * 1024;
1073 if (!(pde & PG_USER_MASK))
1074 goto do_fault_protect;
1075 if (is_write && !(pde & PG_RW_MASK))
1076 goto do_fault_protect;
1078 if ((env->cr[0] & CR0_WP_MASK) &&
1079 is_write && !(pde & PG_RW_MASK))
1080 goto do_fault_protect;
1082 is_dirty = is_write && !(pde & PG_DIRTY_MASK);
1083 if (!(pde & PG_ACCESSED_MASK) || is_dirty) {
1084 pde |= PG_ACCESSED_MASK;
1086 pde |= PG_DIRTY_MASK;
1087 stl_phys_notdirty(pde_addr, pde);
1090 pte = pde & ~( (page_size - 1) & ~0xfff); /* align to page_size */
1092 virt_addr = addr & ~(page_size - 1);
1094 if (!(pde & PG_ACCESSED_MASK)) {
1095 pde |= PG_ACCESSED_MASK;
1096 stl_phys_notdirty(pde_addr, pde);
1099 /* page directory entry */
1100 pte_addr = ((pde & ~0xfff) + ((addr >> 10) & 0xffc)) &
1102 pte = ldl_phys(pte_addr);
1103 if (!(pte & PG_PRESENT_MASK)) {
1107 /* combine pde and pte user and rw protections */
1110 if (!(ptep & PG_USER_MASK))
1111 goto do_fault_protect;
1112 if (is_write && !(ptep & PG_RW_MASK))
1113 goto do_fault_protect;
1115 if ((env->cr[0] & CR0_WP_MASK) &&
1116 is_write && !(ptep & PG_RW_MASK))
1117 goto do_fault_protect;
1119 is_dirty = is_write && !(pte & PG_DIRTY_MASK);
1120 if (!(pte & PG_ACCESSED_MASK) || is_dirty) {
1121 pte |= PG_ACCESSED_MASK;
1123 pte |= PG_DIRTY_MASK;
1124 stl_phys_notdirty(pte_addr, pte);
1127 virt_addr = addr & ~0xfff;
1130 /* the page can be put in the TLB */
1132 if (!(ptep & PG_NX_MASK))
1134 if (pte & PG_DIRTY_MASK) {
1135 /* only set write access if already dirty... otherwise wait
1138 if (ptep & PG_RW_MASK)
1141 if (!(env->cr[0] & CR0_WP_MASK) ||
1142 (ptep & PG_RW_MASK))
1147 pte = pte & env->a20_mask;
1149 /* Even if 4MB pages, we map only one 4KB page in the cache to
1150 avoid filling it too fast */
1151 page_offset = (addr & TARGET_PAGE_MASK) & (page_size - 1);
1152 paddr = (pte & TARGET_PAGE_MASK) + page_offset;
1153 vaddr = virt_addr + page_offset;
1155 ret = tlb_set_page_exec(env, vaddr, paddr, prot, mmu_idx, is_softmmu);
1158 error_code = PG_ERROR_P_MASK;
1160 error_code |= (is_write << PG_ERROR_W_BIT);
1162 error_code |= PG_ERROR_U_MASK;
1163 if (is_write1 == 2 &&
1164 (env->efer & MSR_EFER_NXE) &&
1165 (env->cr[4] & CR4_PAE_MASK))
1166 error_code |= PG_ERROR_I_D_MASK;
1167 if (env->intercept_exceptions & (1 << EXCP0E_PAGE)) {
1168 /* cr2 is not modified in case of exceptions */
1169 stq_phys(env->vm_vmcb + offsetof(struct vmcb, control.exit_info_2),
1174 env->error_code = error_code;
1175 env->exception_index = EXCP0E_PAGE;
1179 target_phys_addr_t cpu_get_phys_page_debug(CPUState *env, target_ulong addr)
1181 target_ulong pde_addr, pte_addr;
1183 target_phys_addr_t paddr;
1184 uint32_t page_offset;
1187 if (env->cr[4] & CR4_PAE_MASK) {
1188 target_ulong pdpe_addr;
1191 #ifdef TARGET_X86_64
1192 if (env->hflags & HF_LMA_MASK) {
1193 uint64_t pml4e_addr, pml4e;
1196 /* test virtual address sign extension */
1197 sext = (int64_t)addr >> 47;
1198 if (sext != 0 && sext != -1)
1201 pml4e_addr = ((env->cr[3] & ~0xfff) + (((addr >> 39) & 0x1ff) << 3)) &
1203 pml4e = ldq_phys(pml4e_addr);
1204 if (!(pml4e & PG_PRESENT_MASK))
1207 pdpe_addr = ((pml4e & ~0xfff) + (((addr >> 30) & 0x1ff) << 3)) &
1209 pdpe = ldq_phys(pdpe_addr);
1210 if (!(pdpe & PG_PRESENT_MASK))
1215 pdpe_addr = ((env->cr[3] & ~0x1f) + ((addr >> 27) & 0x18)) &
1217 pdpe = ldq_phys(pdpe_addr);
1218 if (!(pdpe & PG_PRESENT_MASK))
1222 pde_addr = ((pdpe & ~0xfff) + (((addr >> 21) & 0x1ff) << 3)) &
1224 pde = ldq_phys(pde_addr);
1225 if (!(pde & PG_PRESENT_MASK)) {
1228 if (pde & PG_PSE_MASK) {
1230 page_size = 2048 * 1024;
1231 pte = pde & ~( (page_size - 1) & ~0xfff); /* align to page_size */
1234 pte_addr = ((pde & ~0xfff) + (((addr >> 12) & 0x1ff) << 3)) &
1237 pte = ldq_phys(pte_addr);
1239 if (!(pte & PG_PRESENT_MASK))
1244 if (!(env->cr[0] & CR0_PG_MASK)) {
1248 /* page directory entry */
1249 pde_addr = ((env->cr[3] & ~0xfff) + ((addr >> 20) & 0xffc)) & env->a20_mask;
1250 pde = ldl_phys(pde_addr);
1251 if (!(pde & PG_PRESENT_MASK))
1253 if ((pde & PG_PSE_MASK) && (env->cr[4] & CR4_PSE_MASK)) {
1254 pte = pde & ~0x003ff000; /* align to 4MB */
1255 page_size = 4096 * 1024;
1257 /* page directory entry */
1258 pte_addr = ((pde & ~0xfff) + ((addr >> 10) & 0xffc)) & env->a20_mask;
1259 pte = ldl_phys(pte_addr);
1260 if (!(pte & PG_PRESENT_MASK))
1265 pte = pte & env->a20_mask;
1268 page_offset = (addr & TARGET_PAGE_MASK) & (page_size - 1);
1269 paddr = (pte & TARGET_PAGE_MASK) + page_offset;
1273 void hw_breakpoint_insert(CPUState *env, int index)
1277 switch (hw_breakpoint_type(env->dr[7], index)) {
1279 if (hw_breakpoint_enabled(env->dr[7], index))
1280 err = cpu_breakpoint_insert(env, env->dr[index], BP_CPU,
1281 &env->cpu_breakpoint[index]);
1284 type = BP_CPU | BP_MEM_WRITE;
1287 /* No support for I/O watchpoints yet */
1290 type = BP_CPU | BP_MEM_ACCESS;
1292 err = cpu_watchpoint_insert(env, env->dr[index],
1293 hw_breakpoint_len(env->dr[7], index),
1294 type, &env->cpu_watchpoint[index]);
1298 env->cpu_breakpoint[index] = NULL;
1301 void hw_breakpoint_remove(CPUState *env, int index)
1303 if (!env->cpu_breakpoint[index])
1305 switch (hw_breakpoint_type(env->dr[7], index)) {
1307 if (hw_breakpoint_enabled(env->dr[7], index))
1308 cpu_breakpoint_remove_by_ref(env, env->cpu_breakpoint[index]);
1312 cpu_watchpoint_remove_by_ref(env, env->cpu_watchpoint[index]);
1315 /* No support for I/O watchpoints yet */
1320 int check_hw_breakpoints(CPUState *env, int force_dr6_update)
1324 int hit_enabled = 0;
1326 dr6 = env->dr[6] & ~0xf;
1327 for (reg = 0; reg < 4; reg++) {
1328 type = hw_breakpoint_type(env->dr[7], reg);
1329 if ((type == 0 && env->dr[reg] == env->eip) ||
1330 ((type & 1) && env->cpu_watchpoint[reg] &&
1331 (env->cpu_watchpoint[reg]->flags & BP_WATCHPOINT_HIT))) {
1333 if (hw_breakpoint_enabled(env->dr[7], reg))
1337 if (hit_enabled || force_dr6_update)
1342 static CPUDebugExcpHandler *prev_debug_excp_handler;
1344 void raise_exception(int exception_index);
1346 static void breakpoint_handler(CPUState *env)
1350 if (env->watchpoint_hit) {
1351 if (env->watchpoint_hit->flags & BP_CPU) {
1352 env->watchpoint_hit = NULL;
1353 if (check_hw_breakpoints(env, 0))
1354 raise_exception(EXCP01_DB);
1356 cpu_resume_from_signal(env, NULL);
1359 TAILQ_FOREACH(bp, &env->breakpoints, entry)
1360 if (bp->pc == env->eip) {
1361 if (bp->flags & BP_CPU) {
1362 check_hw_breakpoints(env, 1);
1363 raise_exception(EXCP01_DB);
1368 if (prev_debug_excp_handler)
1369 prev_debug_excp_handler(env);
1371 #endif /* !CONFIG_USER_ONLY */
1373 static void host_cpuid(uint32_t function, uint32_t *eax, uint32_t *ebx,
1374 uint32_t *ecx, uint32_t *edx)
1376 #if defined(CONFIG_KVM)
1380 asm volatile("cpuid"
1381 : "=a"(vec[0]), "=b"(vec[1]),
1382 "=c"(vec[2]), "=d"(vec[3])
1383 : "0"(function) : "cc");
1385 asm volatile("pusha \n\t"
1387 "mov %%eax, 0(%1) \n\t"
1388 "mov %%ebx, 4(%1) \n\t"
1389 "mov %%ecx, 8(%1) \n\t"
1390 "mov %%edx, 12(%1) \n\t"
1392 : : "a"(function), "S"(vec)
1407 void cpu_x86_cpuid(CPUX86State *env, uint32_t index,
1408 uint32_t *eax, uint32_t *ebx,
1409 uint32_t *ecx, uint32_t *edx)
1411 /* test if maximum index reached */
1412 if (index & 0x80000000) {
1413 if (index > env->cpuid_xlevel)
1414 index = env->cpuid_level;
1416 if (index > env->cpuid_level)
1417 index = env->cpuid_level;
1422 *eax = env->cpuid_level;
1423 *ebx = env->cpuid_vendor1;
1424 *edx = env->cpuid_vendor2;
1425 *ecx = env->cpuid_vendor3;
1427 /* sysenter isn't supported on compatibility mode on AMD. and syscall
1428 * isn't supported in compatibility mode on Intel. so advertise the
1429 * actuall cpu, and say goodbye to migration between different vendors
1430 * is you use compatibility mode. */
1432 host_cpuid(0, NULL, ebx, ecx, edx);
1435 *eax = env->cpuid_version;
1436 *ebx = (env->cpuid_apic_id << 24) | 8 << 8; /* CLFLUSH size in quad words, Linux wants it. */
1437 *ecx = env->cpuid_ext_features;
1438 *edx = env->cpuid_features;
1440 /* "Hypervisor present" bit required for Microsoft SVVP */
1445 /* cache info: needed for Pentium Pro compatibility */
1452 /* cache info: needed for Core compatibility */
1454 case 0: /* L1 dcache info */
1460 case 1: /* L1 icache info */
1466 case 2: /* L2 cache info */
1472 default: /* end of info */
1482 /* mwait info: needed for Core compatibility */
1483 *eax = 0; /* Smallest monitor-line size in bytes */
1484 *ebx = 0; /* Largest monitor-line size in bytes */
1485 *ecx = CPUID_MWAIT_EMX | CPUID_MWAIT_IBE;
1489 /* Thermal and Power Leaf */
1496 /* Direct Cache Access Information Leaf */
1497 *eax = 0; /* Bits 0-31 in DCA_CAP MSR */
1503 /* Architectural Performance Monitoring Leaf */
1510 *eax = env->cpuid_xlevel;
1511 *ebx = env->cpuid_vendor1;
1512 *edx = env->cpuid_vendor2;
1513 *ecx = env->cpuid_vendor3;
1516 *eax = env->cpuid_features;
1518 *ecx = env->cpuid_ext3_features;
1519 *edx = env->cpuid_ext2_features;
1521 if (kvm_enabled()) {
1522 uint32_t h_eax, h_edx;
1524 host_cpuid(0x80000001, &h_eax, NULL, NULL, &h_edx);
1526 /* disable CPU features that the host does not support */
1529 if ((h_edx & 0x20000000) == 0 /* || !lm_capable_kernel */)
1530 *edx &= ~0x20000000;
1532 if ((h_edx & 0x00000800) == 0)
1533 *edx &= ~0x00000800;
1535 if ((h_edx & 0x00100000) == 0)
1536 *edx &= ~0x00100000;
1538 /* disable CPU features that KVM cannot support */
1543 *edx &= ~0xc0000000;
1549 *eax = env->cpuid_model[(index - 0x80000002) * 4 + 0];
1550 *ebx = env->cpuid_model[(index - 0x80000002) * 4 + 1];
1551 *ecx = env->cpuid_model[(index - 0x80000002) * 4 + 2];
1552 *edx = env->cpuid_model[(index - 0x80000002) * 4 + 3];
1555 /* cache info (L1 cache) */
1562 /* cache info (L2 cache) */
1569 /* virtual & phys address size in low 2 bytes. */
1570 /* XXX: This value must match the one used in the MMU code. */
1571 if (env->cpuid_ext2_features & CPUID_EXT2_LM) {
1572 /* 64 bit processor */
1573 #if defined(USE_KQEMU)
1574 *eax = 0x00003020; /* 48 bits virtual, 32 bits physical */
1576 /* XXX: The physical address space is limited to 42 bits in exec.c. */
1577 *eax = 0x00003028; /* 48 bits virtual, 40 bits physical */
1580 #if defined(USE_KQEMU)
1581 *eax = 0x00000020; /* 32 bits physical */
1583 if (env->cpuid_features & CPUID_PSE36)
1584 *eax = 0x00000024; /* 36 bits physical */
1586 *eax = 0x00000020; /* 32 bits physical */
1594 *eax = 0x00000001; /* SVM Revision */
1595 *ebx = 0x00000010; /* nr of ASIDs */
1597 *edx = 0; /* optional features */
1600 /* reserved values: zero */
1609 CPUX86State *cpu_x86_init(const char *cpu_model)
1614 env = qemu_mallocz(sizeof(CPUX86State));
1618 env->cpu_model_str = cpu_model;
1620 /* init various static tables */
1623 optimize_flags_init();
1624 #ifndef CONFIG_USER_ONLY
1625 prev_debug_excp_handler =
1626 cpu_set_debug_excp_handler(breakpoint_handler);
1629 if (cpu_x86_register(env, cpu_model) < 0) {