2 * i386 CPUID helper functions
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/>.
27 #include "qemu-option.h"
28 #include "qemu-config.h"
32 /* feature flags taken from "Intel Processor Identification and the CPUID
33 * Instruction" and AMD's "CPUID Specification". In cases of disagreement
34 * between feature naming conventions, aliases may be added.
36 static const char *feature_name[] = {
37 "fpu", "vme", "de", "pse",
38 "tsc", "msr", "pae", "mce",
39 "cx8", "apic", NULL, "sep",
40 "mtrr", "pge", "mca", "cmov",
41 "pat", "pse36", "pn" /* Intel psn */, "clflush" /* Intel clfsh */,
42 NULL, "ds" /* Intel dts */, "acpi", "mmx",
43 "fxsr", "sse", "sse2", "ss",
44 "ht" /* Intel htt */, "tm", "ia64", "pbe",
46 static const char *ext_feature_name[] = {
47 "pni|sse3" /* Intel,AMD sse3 */, "pclmulqdq|pclmuldq", "dtes64", "monitor",
48 "ds_cpl", "vmx", "smx", "est",
49 "tm2", "ssse3", "cid", NULL,
50 "fma", "cx16", "xtpr", "pdcm",
51 NULL, NULL, "dca", "sse4.1|sse4_1",
52 "sse4.2|sse4_2", "x2apic", "movbe", "popcnt",
53 "tsc-deadline", "aes", "xsave", "osxsave",
54 "avx", NULL, NULL, "hypervisor",
56 static const char *ext2_feature_name[] = {
57 "fpu", "vme", "de", "pse",
58 "tsc", "msr", "pae", "mce",
59 "cx8" /* AMD CMPXCHG8B */, "apic", NULL, "syscall",
60 "mtrr", "pge", "mca", "cmov",
61 "pat", "pse36", NULL, NULL /* Linux mp */,
62 "nx|xd", NULL, "mmxext", "mmx",
63 "fxsr", "fxsr_opt|ffxsr", "pdpe1gb" /* AMD Page1GB */, "rdtscp",
64 NULL, "lm|i64", "3dnowext", "3dnow",
66 static const char *ext3_feature_name[] = {
67 "lahf_lm" /* AMD LahfSahf */, "cmp_legacy", "svm", "extapic" /* AMD ExtApicSpace */,
68 "cr8legacy" /* AMD AltMovCr8 */, "abm", "sse4a", "misalignsse",
69 "3dnowprefetch", "osvw", "ibs", "xop",
70 "skinit", "wdt", NULL, NULL,
71 "fma4", NULL, "cvt16", "nodeid_msr",
72 NULL, NULL, NULL, NULL,
73 NULL, NULL, NULL, NULL,
74 NULL, NULL, NULL, NULL,
77 static const char *kvm_feature_name[] = {
78 "kvmclock", "kvm_nopiodelay", "kvm_mmu", "kvmclock", "kvm_asyncpf", NULL, NULL, NULL,
79 NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
80 NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
81 NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
84 static const char *svm_feature_name[] = {
85 "npt", "lbrv", "svm_lock", "nrip_save",
86 "tsc_scale", "vmcb_clean", "flushbyasid", "decodeassists",
87 NULL, NULL, "pause_filter", NULL,
88 "pfthreshold", NULL, NULL, NULL,
89 NULL, NULL, NULL, NULL,
90 NULL, NULL, NULL, NULL,
91 NULL, NULL, NULL, NULL,
92 NULL, NULL, NULL, NULL,
95 /* collects per-function cpuid data
97 typedef struct model_features_t {
101 const char **flag_names;
106 int enforce_cpuid = 0;
108 void host_cpuid(uint32_t function, uint32_t count,
109 uint32_t *eax, uint32_t *ebx, uint32_t *ecx, uint32_t *edx)
111 #if defined(CONFIG_KVM)
116 : "=a"(vec[0]), "=b"(vec[1]),
117 "=c"(vec[2]), "=d"(vec[3])
118 : "0"(function), "c"(count) : "cc");
120 asm volatile("pusha \n\t"
122 "mov %%eax, 0(%2) \n\t"
123 "mov %%ebx, 4(%2) \n\t"
124 "mov %%ecx, 8(%2) \n\t"
125 "mov %%edx, 12(%2) \n\t"
127 : : "a"(function), "c"(count), "S"(vec)
142 #define iswhite(c) ((c) && ((c) <= ' ' || '~' < (c)))
144 /* general substring compare of *[s1..e1) and *[s2..e2). sx is start of
145 * a substring. ex if !NULL points to the first char after a substring,
146 * otherwise the string is assumed to sized by a terminating nul.
147 * Return lexical ordering of *s1:*s2.
149 static int sstrcmp(const char *s1, const char *e1, const char *s2,
153 if (!*s1 || !*s2 || *s1 != *s2)
156 if (s1 == e1 && s2 == e2)
165 /* compare *[s..e) to *altstr. *altstr may be a simple string or multiple
166 * '|' delimited (possibly empty) strings in which case search for a match
167 * within the alternatives proceeds left to right. Return 0 for success,
168 * non-zero otherwise.
170 static int altcmp(const char *s, const char *e, const char *altstr)
174 for (q = p = altstr; ; ) {
175 while (*p && *p != '|')
177 if ((q == p && !*s) || (q != p && !sstrcmp(s, e, q, p)))
186 /* search featureset for flag *[s..e), if found set corresponding bit in
187 * *pval and return true, otherwise return false
189 static bool lookup_feature(uint32_t *pval, const char *s, const char *e,
190 const char **featureset)
196 for (mask = 1, ppc = featureset; mask; mask <<= 1, ++ppc) {
197 if (*ppc && !altcmp(s, e, *ppc)) {
205 static void add_flagname_to_bitmaps(const char *flagname, uint32_t *features,
206 uint32_t *ext_features,
207 uint32_t *ext2_features,
208 uint32_t *ext3_features,
209 uint32_t *kvm_features,
210 uint32_t *svm_features)
212 if (!lookup_feature(features, flagname, NULL, feature_name) &&
213 !lookup_feature(ext_features, flagname, NULL, ext_feature_name) &&
214 !lookup_feature(ext2_features, flagname, NULL, ext2_feature_name) &&
215 !lookup_feature(ext3_features, flagname, NULL, ext3_feature_name) &&
216 !lookup_feature(kvm_features, flagname, NULL, kvm_feature_name) &&
217 !lookup_feature(svm_features, flagname, NULL, svm_feature_name))
218 fprintf(stderr, "CPU feature %s not found\n", flagname);
221 typedef struct x86_def_t {
222 struct x86_def_t *next;
225 uint32_t vendor1, vendor2, vendor3;
230 uint32_t features, ext_features, ext2_features, ext3_features;
231 uint32_t kvm_features, svm_features;
236 /* Store the results of Centaur's CPUID instructions */
237 uint32_t ext4_features;
241 #define I486_FEATURES (CPUID_FP87 | CPUID_VME | CPUID_PSE)
242 #define PENTIUM_FEATURES (I486_FEATURES | CPUID_DE | CPUID_TSC | \
243 CPUID_MSR | CPUID_MCE | CPUID_CX8 | CPUID_MMX | CPUID_APIC)
244 #define PENTIUM2_FEATURES (PENTIUM_FEATURES | CPUID_PAE | CPUID_SEP | \
245 CPUID_MTRR | CPUID_PGE | CPUID_MCA | CPUID_CMOV | CPUID_PAT | \
246 CPUID_PSE36 | CPUID_FXSR)
247 #define PENTIUM3_FEATURES (PENTIUM2_FEATURES | CPUID_SSE)
248 #define PPRO_FEATURES (CPUID_FP87 | CPUID_DE | CPUID_PSE | CPUID_TSC | \
249 CPUID_MSR | CPUID_MCE | CPUID_CX8 | CPUID_PGE | CPUID_CMOV | \
250 CPUID_PAT | CPUID_FXSR | CPUID_MMX | CPUID_SSE | CPUID_SSE2 | \
251 CPUID_PAE | CPUID_SEP | CPUID_APIC)
252 #define EXT2_FEATURE_MASK 0x0183F3FF
254 #define TCG_FEATURES (CPUID_FP87 | CPUID_PSE | CPUID_TSC | CPUID_MSR | \
255 CPUID_PAE | CPUID_MCE | CPUID_CX8 | CPUID_APIC | CPUID_SEP | \
256 CPUID_MTRR | CPUID_PGE | CPUID_MCA | CPUID_CMOV | CPUID_PAT | \
257 CPUID_PSE36 | CPUID_CLFLUSH | CPUID_ACPI | CPUID_MMX | \
258 CPUID_FXSR | CPUID_SSE | CPUID_SSE2 | CPUID_SS)
259 /* partly implemented:
260 CPUID_MTRR, CPUID_MCA, CPUID_CLFLUSH (needed for Win64)
261 CPUID_PSE36 (needed for Solaris) */
263 CPUID_VME, CPUID_DTS, CPUID_SS, CPUID_HT, CPUID_TM, CPUID_PBE */
264 #define TCG_EXT_FEATURES (CPUID_EXT_SSE3 | CPUID_EXT_MONITOR | \
265 CPUID_EXT_CX16 | CPUID_EXT_POPCNT | \
266 CPUID_EXT_HYPERVISOR)
268 CPUID_EXT_DTES64, CPUID_EXT_DSCPL, CPUID_EXT_VMX, CPUID_EXT_EST,
269 CPUID_EXT_TM2, CPUID_EXT_XTPR, CPUID_EXT_PDCM, CPUID_EXT_XSAVE */
270 #define TCG_EXT2_FEATURES ((TCG_FEATURES & EXT2_FEATURE_MASK) | \
271 CPUID_EXT2_NX | CPUID_EXT2_MMXEXT | CPUID_EXT2_RDTSCP | \
272 CPUID_EXT2_3DNOW | CPUID_EXT2_3DNOWEXT)
274 CPUID_EXT2_PDPE1GB */
275 #define TCG_EXT3_FEATURES (CPUID_EXT3_LAHF_LM | CPUID_EXT3_SVM | \
276 CPUID_EXT3_CR8LEG | CPUID_EXT3_ABM | CPUID_EXT3_SSE4A)
277 #define TCG_SVM_FEATURES 0
279 /* maintains list of cpu model definitions
281 static x86_def_t *x86_defs = {NULL};
283 /* built-in cpu model definitions (deprecated)
285 static x86_def_t builtin_x86_defs[] = {
289 .vendor1 = CPUID_VENDOR_AMD_1,
290 .vendor2 = CPUID_VENDOR_AMD_2,
291 .vendor3 = CPUID_VENDOR_AMD_3,
295 .features = PPRO_FEATURES |
296 CPUID_MTRR | CPUID_CLFLUSH | CPUID_MCA |
298 .ext_features = CPUID_EXT_SSE3 | CPUID_EXT_CX16 | CPUID_EXT_POPCNT,
299 .ext2_features = (PPRO_FEATURES & EXT2_FEATURE_MASK) |
300 CPUID_EXT2_LM | CPUID_EXT2_SYSCALL | CPUID_EXT2_NX,
301 .ext3_features = CPUID_EXT3_LAHF_LM | CPUID_EXT3_SVM |
302 CPUID_EXT3_ABM | CPUID_EXT3_SSE4A,
303 .xlevel = 0x8000000A,
304 .model_id = "QEMU Virtual CPU version " QEMU_VERSION,
309 .vendor1 = CPUID_VENDOR_AMD_1,
310 .vendor2 = CPUID_VENDOR_AMD_2,
311 .vendor3 = CPUID_VENDOR_AMD_3,
315 .features = PPRO_FEATURES |
316 CPUID_MTRR | CPUID_CLFLUSH | CPUID_MCA |
317 CPUID_PSE36 | CPUID_VME | CPUID_HT,
318 .ext_features = CPUID_EXT_SSE3 | CPUID_EXT_MONITOR | CPUID_EXT_CX16 |
320 .ext2_features = (PPRO_FEATURES & EXT2_FEATURE_MASK) |
321 CPUID_EXT2_LM | CPUID_EXT2_SYSCALL | CPUID_EXT2_NX |
322 CPUID_EXT2_3DNOW | CPUID_EXT2_3DNOWEXT | CPUID_EXT2_MMXEXT |
323 CPUID_EXT2_FFXSR | CPUID_EXT2_PDPE1GB | CPUID_EXT2_RDTSCP,
324 /* Missing: CPUID_EXT3_CMP_LEG, CPUID_EXT3_EXTAPIC,
326 CPUID_EXT3_MISALIGNSSE, CPUID_EXT3_3DNOWPREFETCH,
327 CPUID_EXT3_OSVW, CPUID_EXT3_IBS */
328 .ext3_features = CPUID_EXT3_LAHF_LM | CPUID_EXT3_SVM |
329 CPUID_EXT3_ABM | CPUID_EXT3_SSE4A,
330 .svm_features = CPUID_SVM_NPT | CPUID_SVM_LBRV,
331 .xlevel = 0x8000001A,
332 .model_id = "AMD Phenom(tm) 9550 Quad-Core Processor"
340 .features = PPRO_FEATURES |
341 CPUID_MTRR | CPUID_CLFLUSH | CPUID_MCA |
342 CPUID_PSE36 | CPUID_VME | CPUID_DTS | CPUID_ACPI | CPUID_SS |
343 CPUID_HT | CPUID_TM | CPUID_PBE,
344 .ext_features = CPUID_EXT_SSE3 | CPUID_EXT_MONITOR | CPUID_EXT_SSSE3 |
345 CPUID_EXT_DTES64 | CPUID_EXT_DSCPL | CPUID_EXT_VMX | CPUID_EXT_EST |
346 CPUID_EXT_TM2 | CPUID_EXT_CX16 | CPUID_EXT_XTPR | CPUID_EXT_PDCM,
347 .ext2_features = CPUID_EXT2_LM | CPUID_EXT2_SYSCALL | CPUID_EXT2_NX,
348 .ext3_features = CPUID_EXT3_LAHF_LM,
349 .xlevel = 0x80000008,
350 .model_id = "Intel(R) Core(TM)2 Duo CPU T7700 @ 2.40GHz",
355 .vendor1 = CPUID_VENDOR_INTEL_1,
356 .vendor2 = CPUID_VENDOR_INTEL_2,
357 .vendor3 = CPUID_VENDOR_INTEL_3,
361 /* Missing: CPUID_VME, CPUID_HT */
362 .features = PPRO_FEATURES |
363 CPUID_MTRR | CPUID_CLFLUSH | CPUID_MCA |
365 /* Missing: CPUID_EXT_POPCNT, CPUID_EXT_MONITOR */
366 .ext_features = CPUID_EXT_SSE3 | CPUID_EXT_CX16,
367 /* Missing: CPUID_EXT2_PDPE1GB, CPUID_EXT2_RDTSCP */
368 .ext2_features = (PPRO_FEATURES & EXT2_FEATURE_MASK) |
369 CPUID_EXT2_LM | CPUID_EXT2_SYSCALL | CPUID_EXT2_NX,
370 /* Missing: CPUID_EXT3_LAHF_LM, CPUID_EXT3_CMP_LEG, CPUID_EXT3_EXTAPIC,
371 CPUID_EXT3_CR8LEG, CPUID_EXT3_ABM, CPUID_EXT3_SSE4A,
372 CPUID_EXT3_MISALIGNSSE, CPUID_EXT3_3DNOWPREFETCH,
373 CPUID_EXT3_OSVW, CPUID_EXT3_IBS, CPUID_EXT3_SVM */
375 .xlevel = 0x80000008,
376 .model_id = "Common KVM processor"
384 .features = PPRO_FEATURES,
385 .ext_features = CPUID_EXT_SSE3 | CPUID_EXT_POPCNT,
386 .xlevel = 0x80000004,
387 .model_id = "QEMU Virtual CPU version " QEMU_VERSION,
395 .features = PPRO_FEATURES |
396 CPUID_MTRR | CPUID_CLFLUSH | CPUID_MCA | CPUID_PSE36,
397 .ext_features = CPUID_EXT_SSE3,
398 .ext2_features = PPRO_FEATURES & EXT2_FEATURE_MASK,
400 .xlevel = 0x80000008,
401 .model_id = "Common 32-bit KVM processor"
409 .features = PPRO_FEATURES | CPUID_VME |
410 CPUID_MTRR | CPUID_CLFLUSH | CPUID_MCA | CPUID_DTS | CPUID_ACPI |
411 CPUID_SS | CPUID_HT | CPUID_TM | CPUID_PBE,
412 .ext_features = CPUID_EXT_SSE3 | CPUID_EXT_MONITOR | CPUID_EXT_VMX |
413 CPUID_EXT_EST | CPUID_EXT_TM2 | CPUID_EXT_XTPR | CPUID_EXT_PDCM,
414 .ext2_features = CPUID_EXT2_NX,
415 .xlevel = 0x80000008,
416 .model_id = "Genuine Intel(R) CPU T2600 @ 2.16GHz",
424 .features = I486_FEATURES,
433 .features = PENTIUM_FEATURES,
442 .features = PENTIUM2_FEATURES,
451 .features = PENTIUM3_FEATURES,
457 .vendor1 = CPUID_VENDOR_AMD_1,
458 .vendor2 = CPUID_VENDOR_AMD_2,
459 .vendor3 = CPUID_VENDOR_AMD_3,
463 .features = PPRO_FEATURES | CPUID_PSE36 | CPUID_VME | CPUID_MTRR | CPUID_MCA,
464 .ext2_features = (PPRO_FEATURES & EXT2_FEATURE_MASK) | CPUID_EXT2_MMXEXT | CPUID_EXT2_3DNOW | CPUID_EXT2_3DNOWEXT,
465 .xlevel = 0x80000008,
466 /* XXX: put another string ? */
467 .model_id = "QEMU Virtual CPU version " QEMU_VERSION,
471 /* original is on level 10 */
476 .features = PPRO_FEATURES |
477 CPUID_MTRR | CPUID_CLFLUSH | CPUID_MCA | CPUID_VME | CPUID_DTS |
478 CPUID_ACPI | CPUID_SS | CPUID_HT | CPUID_TM | CPUID_PBE,
479 /* Some CPUs got no CPUID_SEP */
480 .ext_features = CPUID_EXT_SSE3 | CPUID_EXT_MONITOR | CPUID_EXT_SSSE3 |
481 CPUID_EXT_DSCPL | CPUID_EXT_EST | CPUID_EXT_TM2 | CPUID_EXT_XTPR,
482 .ext2_features = (PPRO_FEATURES & EXT2_FEATURE_MASK) | CPUID_EXT2_NX,
483 .ext3_features = CPUID_EXT3_LAHF_LM,
484 .xlevel = 0x8000000A,
485 .model_id = "Intel(R) Atom(TM) CPU N270 @ 1.60GHz",
489 static int cpu_x86_fill_model_id(char *str)
491 uint32_t eax = 0, ebx = 0, ecx = 0, edx = 0;
494 for (i = 0; i < 3; i++) {
495 host_cpuid(0x80000002 + i, 0, &eax, &ebx, &ecx, &edx);
496 memcpy(str + i * 16 + 0, &eax, 4);
497 memcpy(str + i * 16 + 4, &ebx, 4);
498 memcpy(str + i * 16 + 8, &ecx, 4);
499 memcpy(str + i * 16 + 12, &edx, 4);
504 static int cpu_x86_fill_host(x86_def_t *x86_cpu_def)
506 uint32_t eax = 0, ebx = 0, ecx = 0, edx = 0;
508 x86_cpu_def->name = "host";
509 host_cpuid(0x0, 0, &eax, &ebx, &ecx, &edx);
510 x86_cpu_def->level = eax;
511 x86_cpu_def->vendor1 = ebx;
512 x86_cpu_def->vendor2 = edx;
513 x86_cpu_def->vendor3 = ecx;
515 host_cpuid(0x1, 0, &eax, &ebx, &ecx, &edx);
516 x86_cpu_def->family = ((eax >> 8) & 0x0F) + ((eax >> 20) & 0xFF);
517 x86_cpu_def->model = ((eax >> 4) & 0x0F) | ((eax & 0xF0000) >> 12);
518 x86_cpu_def->stepping = eax & 0x0F;
519 x86_cpu_def->ext_features = ecx;
520 x86_cpu_def->features = edx;
522 host_cpuid(0x80000000, 0, &eax, &ebx, &ecx, &edx);
523 x86_cpu_def->xlevel = eax;
525 host_cpuid(0x80000001, 0, &eax, &ebx, &ecx, &edx);
526 x86_cpu_def->ext2_features = edx;
527 x86_cpu_def->ext3_features = ecx;
528 cpu_x86_fill_model_id(x86_cpu_def->model_id);
529 x86_cpu_def->vendor_override = 0;
531 /* Call Centaur's CPUID instruction. */
532 if (x86_cpu_def->vendor1 == CPUID_VENDOR_VIA_1 &&
533 x86_cpu_def->vendor2 == CPUID_VENDOR_VIA_2 &&
534 x86_cpu_def->vendor3 == CPUID_VENDOR_VIA_3) {
535 host_cpuid(0xC0000000, 0, &eax, &ebx, &ecx, &edx);
536 if (eax >= 0xC0000001) {
537 /* Support VIA max extended level */
538 x86_cpu_def->xlevel2 = eax;
539 host_cpuid(0xC0000001, 0, &eax, &ebx, &ecx, &edx);
540 x86_cpu_def->ext4_features = edx;
545 * Every SVM feature requires emulation support in KVM - so we can't just
546 * read the host features here. KVM might even support SVM features not
547 * available on the host hardware. Just set all bits and mask out the
548 * unsupported ones later.
550 x86_cpu_def->svm_features = -1;
555 static int unavailable_host_feature(struct model_features_t *f, uint32_t mask)
559 for (i = 0; i < 32; ++i)
561 fprintf(stderr, "warning: host cpuid %04x_%04x lacks requested"
562 " flag '%s' [0x%08x]\n",
563 f->cpuid >> 16, f->cpuid & 0xffff,
564 f->flag_names[i] ? f->flag_names[i] : "[reserved]", mask);
570 /* best effort attempt to inform user requested cpu flags aren't making
571 * their way to the guest. Note: ft[].check_feat ideally should be
572 * specified via a guest_def field to suppress report of extraneous flags.
574 static int check_features_against_host(x86_def_t *guest_def)
579 struct model_features_t ft[] = {
580 {&guest_def->features, &host_def.features,
581 ~0, feature_name, 0x00000000},
582 {&guest_def->ext_features, &host_def.ext_features,
583 ~CPUID_EXT_HYPERVISOR, ext_feature_name, 0x00000001},
584 {&guest_def->ext2_features, &host_def.ext2_features,
585 ~PPRO_FEATURES, ext2_feature_name, 0x80000000},
586 {&guest_def->ext3_features, &host_def.ext3_features,
587 ~CPUID_EXT3_SVM, ext3_feature_name, 0x80000001}};
589 cpu_x86_fill_host(&host_def);
590 for (rv = 0, i = 0; i < ARRAY_SIZE(ft); ++i)
591 for (mask = 1; mask; mask <<= 1)
592 if (ft[i].check_feat & mask && *ft[i].guest_feat & mask &&
593 !(*ft[i].host_feat & mask)) {
594 unavailable_host_feature(&ft[i], mask);
600 static void x86_cpuid_version_set_family(CPUX86State *env, int family)
602 env->cpuid_version &= ~0xff00f00;
604 env->cpuid_version |= 0xf00 | ((family - 0x0f) << 20);
606 env->cpuid_version |= family << 8;
610 static void x86_cpuid_version_set_model(CPUX86State *env, int model)
612 env->cpuid_version &= ~0xf00f0;
613 env->cpuid_version |= ((model & 0xf) << 4) | ((model >> 4) << 16);
616 static void x86_cpuid_version_set_stepping(CPUX86State *env, int stepping)
618 env->cpuid_version &= ~0xf;
619 env->cpuid_version |= stepping & 0xf;
622 static void x86_cpuid_set_model_id(CPUX86State *env, const char *model_id)
626 if (model_id == NULL) {
629 len = strlen(model_id);
630 memset(env->cpuid_model, 0, 48);
631 for (i = 0; i < 48; i++) {
635 c = (uint8_t)model_id[i];
637 env->cpuid_model[i >> 2] |= c << (8 * (i & 3));
641 static int cpu_x86_find_by_name(x86_def_t *x86_cpu_def, const char *cpu_model)
646 char *s = g_strdup(cpu_model);
647 char *featurestr, *name = strtok(s, ",");
648 /* Features to be added*/
649 uint32_t plus_features = 0, plus_ext_features = 0;
650 uint32_t plus_ext2_features = 0, plus_ext3_features = 0;
651 uint32_t plus_kvm_features = 0, plus_svm_features = 0;
652 /* Features to be removed */
653 uint32_t minus_features = 0, minus_ext_features = 0;
654 uint32_t minus_ext2_features = 0, minus_ext3_features = 0;
655 uint32_t minus_kvm_features = 0, minus_svm_features = 0;
658 for (def = x86_defs; def; def = def->next)
659 if (name && !strcmp(name, def->name))
661 if (kvm_enabled() && name && strcmp(name, "host") == 0) {
662 cpu_x86_fill_host(x86_cpu_def);
666 memcpy(x86_cpu_def, def, sizeof(*def));
669 plus_kvm_features = ~0; /* not supported bits will be filtered out later */
671 add_flagname_to_bitmaps("hypervisor", &plus_features,
672 &plus_ext_features, &plus_ext2_features, &plus_ext3_features,
673 &plus_kvm_features, &plus_svm_features);
675 featurestr = strtok(NULL, ",");
679 if (featurestr[0] == '+') {
680 add_flagname_to_bitmaps(featurestr + 1, &plus_features,
681 &plus_ext_features, &plus_ext2_features,
682 &plus_ext3_features, &plus_kvm_features,
684 } else if (featurestr[0] == '-') {
685 add_flagname_to_bitmaps(featurestr + 1, &minus_features,
686 &minus_ext_features, &minus_ext2_features,
687 &minus_ext3_features, &minus_kvm_features,
688 &minus_svm_features);
689 } else if ((val = strchr(featurestr, '='))) {
691 if (!strcmp(featurestr, "family")) {
693 numvalue = strtoul(val, &err, 0);
695 fprintf(stderr, "bad numerical value %s\n", val);
698 x86_cpu_def->family = numvalue;
699 } else if (!strcmp(featurestr, "model")) {
701 numvalue = strtoul(val, &err, 0);
702 if (!*val || *err || numvalue > 0xff) {
703 fprintf(stderr, "bad numerical value %s\n", val);
706 x86_cpu_def->model = numvalue;
707 } else if (!strcmp(featurestr, "stepping")) {
709 numvalue = strtoul(val, &err, 0);
710 if (!*val || *err || numvalue > 0xf) {
711 fprintf(stderr, "bad numerical value %s\n", val);
714 x86_cpu_def->stepping = numvalue ;
715 } else if (!strcmp(featurestr, "level")) {
717 numvalue = strtoul(val, &err, 0);
719 fprintf(stderr, "bad numerical value %s\n", val);
722 x86_cpu_def->level = numvalue;
723 } else if (!strcmp(featurestr, "xlevel")) {
725 numvalue = strtoul(val, &err, 0);
727 fprintf(stderr, "bad numerical value %s\n", val);
730 if (numvalue < 0x80000000) {
731 numvalue += 0x80000000;
733 x86_cpu_def->xlevel = numvalue;
734 } else if (!strcmp(featurestr, "vendor")) {
735 if (strlen(val) != 12) {
736 fprintf(stderr, "vendor string must be 12 chars long\n");
739 x86_cpu_def->vendor1 = 0;
740 x86_cpu_def->vendor2 = 0;
741 x86_cpu_def->vendor3 = 0;
742 for(i = 0; i < 4; i++) {
743 x86_cpu_def->vendor1 |= ((uint8_t)val[i ]) << (8 * i);
744 x86_cpu_def->vendor2 |= ((uint8_t)val[i + 4]) << (8 * i);
745 x86_cpu_def->vendor3 |= ((uint8_t)val[i + 8]) << (8 * i);
747 x86_cpu_def->vendor_override = 1;
748 } else if (!strcmp(featurestr, "model_id")) {
749 pstrcpy(x86_cpu_def->model_id, sizeof(x86_cpu_def->model_id),
751 } else if (!strcmp(featurestr, "tsc_freq")) {
755 tsc_freq = strtosz_suffix_unit(val, &err,
756 STRTOSZ_DEFSUFFIX_B, 1000);
757 if (tsc_freq < 0 || *err) {
758 fprintf(stderr, "bad numerical value %s\n", val);
761 x86_cpu_def->tsc_khz = tsc_freq / 1000;
762 } else if (!strcmp(featurestr, "hv_spinlocks")) {
764 numvalue = strtoul(val, &err, 0);
766 fprintf(stderr, "bad numerical value %s\n", val);
769 hyperv_set_spinlock_retries(numvalue);
771 fprintf(stderr, "unrecognized feature %s\n", featurestr);
774 } else if (!strcmp(featurestr, "check")) {
776 } else if (!strcmp(featurestr, "enforce")) {
777 check_cpuid = enforce_cpuid = 1;
778 } else if (!strcmp(featurestr, "hv_relaxed")) {
779 hyperv_enable_relaxed_timing(true);
780 } else if (!strcmp(featurestr, "hv_vapic")) {
781 hyperv_enable_vapic_recommended(true);
783 fprintf(stderr, "feature string `%s' not in format (+feature|-feature|feature=xyz)\n", featurestr);
786 featurestr = strtok(NULL, ",");
788 x86_cpu_def->features |= plus_features;
789 x86_cpu_def->ext_features |= plus_ext_features;
790 x86_cpu_def->ext2_features |= plus_ext2_features;
791 x86_cpu_def->ext3_features |= plus_ext3_features;
792 x86_cpu_def->kvm_features |= plus_kvm_features;
793 x86_cpu_def->svm_features |= plus_svm_features;
794 x86_cpu_def->features &= ~minus_features;
795 x86_cpu_def->ext_features &= ~minus_ext_features;
796 x86_cpu_def->ext2_features &= ~minus_ext2_features;
797 x86_cpu_def->ext3_features &= ~minus_ext3_features;
798 x86_cpu_def->kvm_features &= ~minus_kvm_features;
799 x86_cpu_def->svm_features &= ~minus_svm_features;
801 if (check_features_against_host(x86_cpu_def) && enforce_cpuid)
812 /* generate a composite string into buf of all cpuid names in featureset
813 * selected by fbits. indicate truncation at bufsize in the event of overflow.
814 * if flags, suppress names undefined in featureset.
816 static void listflags(char *buf, int bufsize, uint32_t fbits,
817 const char **featureset, uint32_t flags)
819 const char **p = &featureset[31];
823 b = 4 <= bufsize ? buf + (bufsize -= 3) - 1 : NULL;
825 for (q = buf, bit = 31; fbits && bufsize; --p, fbits &= ~(1 << bit), --bit)
826 if (fbits & 1 << bit && (*p || !flags)) {
828 nc = snprintf(q, bufsize, "%s%s", q == buf ? "" : " ", *p);
830 nc = snprintf(q, bufsize, "%s[%d]", q == buf ? "" : " ", bit);
833 memcpy(b, "...", sizeof("..."));
842 /* generate CPU information:
843 * -? list model names
844 * -?model list model names/IDs
845 * -?dump output all model (x86_def_t) data
846 * -?cpuid list all recognized cpuid flag names
848 void x86_cpu_list(FILE *f, fprintf_function cpu_fprintf, const char *optarg)
850 unsigned char model = !strcmp("?model", optarg);
851 unsigned char dump = !strcmp("?dump", optarg);
852 unsigned char cpuid = !strcmp("?cpuid", optarg);
857 (*cpu_fprintf)(f, "Recognized CPUID flags:\n");
858 listflags(buf, sizeof (buf), (uint32_t)~0, feature_name, 1);
859 (*cpu_fprintf)(f, " f_edx: %s\n", buf);
860 listflags(buf, sizeof (buf), (uint32_t)~0, ext_feature_name, 1);
861 (*cpu_fprintf)(f, " f_ecx: %s\n", buf);
862 listflags(buf, sizeof (buf), (uint32_t)~0, ext2_feature_name, 1);
863 (*cpu_fprintf)(f, " extf_edx: %s\n", buf);
864 listflags(buf, sizeof (buf), (uint32_t)~0, ext3_feature_name, 1);
865 (*cpu_fprintf)(f, " extf_ecx: %s\n", buf);
868 for (def = x86_defs; def; def = def->next) {
869 snprintf(buf, sizeof (buf), def->flags ? "[%s]": "%s", def->name);
871 (*cpu_fprintf)(f, "x86 %16s %-48s\n", buf, def->model_id);
873 (*cpu_fprintf)(f, "x86 %16s\n", buf);
876 memcpy(buf, &def->vendor1, sizeof (def->vendor1));
877 memcpy(buf + 4, &def->vendor2, sizeof (def->vendor2));
878 memcpy(buf + 8, &def->vendor3, sizeof (def->vendor3));
881 " family %d model %d stepping %d level %d xlevel 0x%x"
883 def->family, def->model, def->stepping, def->level,
885 listflags(buf, sizeof (buf), def->features, feature_name, 0);
886 (*cpu_fprintf)(f, " feature_edx %08x (%s)\n", def->features,
888 listflags(buf, sizeof (buf), def->ext_features, ext_feature_name,
890 (*cpu_fprintf)(f, " feature_ecx %08x (%s)\n", def->ext_features,
892 listflags(buf, sizeof (buf), def->ext2_features, ext2_feature_name,
894 (*cpu_fprintf)(f, " extfeature_edx %08x (%s)\n",
895 def->ext2_features, buf);
896 listflags(buf, sizeof (buf), def->ext3_features, ext3_feature_name,
898 (*cpu_fprintf)(f, " extfeature_ecx %08x (%s)\n",
899 def->ext3_features, buf);
900 (*cpu_fprintf)(f, "\n");
904 (*cpu_fprintf)(f, "x86 %16s\n", "[host]");
908 int cpu_x86_register(X86CPU *cpu, const char *cpu_model)
910 CPUX86State *env = &cpu->env;
911 x86_def_t def1, *def = &def1;
913 memset(def, 0, sizeof(*def));
915 if (cpu_x86_find_by_name(def, cpu_model) < 0)
918 env->cpuid_vendor1 = def->vendor1;
919 env->cpuid_vendor2 = def->vendor2;
920 env->cpuid_vendor3 = def->vendor3;
922 env->cpuid_vendor1 = CPUID_VENDOR_INTEL_1;
923 env->cpuid_vendor2 = CPUID_VENDOR_INTEL_2;
924 env->cpuid_vendor3 = CPUID_VENDOR_INTEL_3;
926 env->cpuid_vendor_override = def->vendor_override;
927 env->cpuid_level = def->level;
928 x86_cpuid_version_set_family(env, def->family);
929 x86_cpuid_version_set_model(env, def->model);
930 x86_cpuid_version_set_stepping(env, def->stepping);
931 env->cpuid_features = def->features;
932 env->cpuid_ext_features = def->ext_features;
933 env->cpuid_ext2_features = def->ext2_features;
934 env->cpuid_ext3_features = def->ext3_features;
935 env->cpuid_xlevel = def->xlevel;
936 env->cpuid_kvm_features = def->kvm_features;
937 env->cpuid_svm_features = def->svm_features;
938 env->cpuid_ext4_features = def->ext4_features;
939 env->cpuid_xlevel2 = def->xlevel2;
940 env->tsc_khz = def->tsc_khz;
941 if (!kvm_enabled()) {
942 env->cpuid_features &= TCG_FEATURES;
943 env->cpuid_ext_features &= TCG_EXT_FEATURES;
944 env->cpuid_ext2_features &= (TCG_EXT2_FEATURES
946 | CPUID_EXT2_SYSCALL | CPUID_EXT2_LM
949 env->cpuid_ext3_features &= TCG_EXT3_FEATURES;
950 env->cpuid_svm_features &= TCG_SVM_FEATURES;
952 x86_cpuid_set_model_id(env, def->model_id);
956 #if !defined(CONFIG_USER_ONLY)
957 /* copy vendor id string to 32 bit register, nul pad as needed
959 static void cpyid(const char *s, uint32_t *id)
961 char *d = (char *)id;
964 for (i = sizeof (*id); i--; )
965 *d++ = *s ? *s++ : '\0';
968 /* interpret radix and convert from string to arbitrary scalar,
969 * otherwise flag failure
971 #define setscalar(pval, str, perr) \
976 ul = strtoul(str, &pend, 0); \
977 *str && !*pend ? (*pval = ul) : (*perr = 1); \
980 /* map cpuid options to feature bits, otherwise return failure
981 * (option tags in *str are delimited by whitespace)
983 static void setfeatures(uint32_t *pval, const char *str,
984 const char **featureset, int *perr)
988 for (q = p = str; *p || *q; q = p) {
991 while (*p && !iswhite(*p))
995 if (!lookup_feature(pval, q, p, featureset)) {
996 fprintf(stderr, "error: feature \"%.*s\" not available in set\n",
1004 /* map config file options to x86_def_t form
1006 static int cpudef_setfield(const char *name, const char *str, void *opaque)
1008 x86_def_t *def = opaque;
1011 if (!strcmp(name, "name")) {
1012 g_free((void *)def->name);
1013 def->name = g_strdup(str);
1014 } else if (!strcmp(name, "model_id")) {
1015 strncpy(def->model_id, str, sizeof (def->model_id));
1016 } else if (!strcmp(name, "level")) {
1017 setscalar(&def->level, str, &err)
1018 } else if (!strcmp(name, "vendor")) {
1019 cpyid(&str[0], &def->vendor1);
1020 cpyid(&str[4], &def->vendor2);
1021 cpyid(&str[8], &def->vendor3);
1022 } else if (!strcmp(name, "family")) {
1023 setscalar(&def->family, str, &err)
1024 } else if (!strcmp(name, "model")) {
1025 setscalar(&def->model, str, &err)
1026 } else if (!strcmp(name, "stepping")) {
1027 setscalar(&def->stepping, str, &err)
1028 } else if (!strcmp(name, "feature_edx")) {
1029 setfeatures(&def->features, str, feature_name, &err);
1030 } else if (!strcmp(name, "feature_ecx")) {
1031 setfeatures(&def->ext_features, str, ext_feature_name, &err);
1032 } else if (!strcmp(name, "extfeature_edx")) {
1033 setfeatures(&def->ext2_features, str, ext2_feature_name, &err);
1034 } else if (!strcmp(name, "extfeature_ecx")) {
1035 setfeatures(&def->ext3_features, str, ext3_feature_name, &err);
1036 } else if (!strcmp(name, "xlevel")) {
1037 setscalar(&def->xlevel, str, &err)
1039 fprintf(stderr, "error: unknown option [%s = %s]\n", name, str);
1043 fprintf(stderr, "error: bad option value [%s = %s]\n", name, str);
1049 /* register config file entry as x86_def_t
1051 static int cpudef_register(QemuOpts *opts, void *opaque)
1053 x86_def_t *def = g_malloc0(sizeof (x86_def_t));
1055 qemu_opt_foreach(opts, cpudef_setfield, def, 1);
1056 def->next = x86_defs;
1061 void cpu_clear_apic_feature(CPUX86State *env)
1063 env->cpuid_features &= ~CPUID_APIC;
1066 #endif /* !CONFIG_USER_ONLY */
1068 /* register "cpudef" models defined in configuration file. Here we first
1069 * preload any built-in definitions
1071 void x86_cpudef_setup(void)
1075 for (i = 0; i < ARRAY_SIZE(builtin_x86_defs); ++i) {
1076 builtin_x86_defs[i].next = x86_defs;
1077 builtin_x86_defs[i].flags = 1;
1078 x86_defs = &builtin_x86_defs[i];
1080 #if !defined(CONFIG_USER_ONLY)
1081 qemu_opts_foreach(qemu_find_opts("cpudef"), cpudef_register, NULL, 0);
1085 static void get_cpuid_vendor(CPUX86State *env, uint32_t *ebx,
1086 uint32_t *ecx, uint32_t *edx)
1088 *ebx = env->cpuid_vendor1;
1089 *edx = env->cpuid_vendor2;
1090 *ecx = env->cpuid_vendor3;
1092 /* sysenter isn't supported on compatibility mode on AMD, syscall
1093 * isn't supported in compatibility mode on Intel.
1094 * Normally we advertise the actual cpu vendor, but you can override
1095 * this if you want to use KVM's sysenter/syscall emulation
1096 * in compatibility mode and when doing cross vendor migration
1098 if (kvm_enabled() && ! env->cpuid_vendor_override) {
1099 host_cpuid(0, 0, NULL, ebx, ecx, edx);
1103 void cpu_x86_cpuid(CPUX86State *env, uint32_t index, uint32_t count,
1104 uint32_t *eax, uint32_t *ebx,
1105 uint32_t *ecx, uint32_t *edx)
1107 /* test if maximum index reached */
1108 if (index & 0x80000000) {
1109 if (index > env->cpuid_xlevel) {
1110 if (env->cpuid_xlevel2 > 0) {
1111 /* Handle the Centaur's CPUID instruction. */
1112 if (index > env->cpuid_xlevel2) {
1113 index = env->cpuid_xlevel2;
1114 } else if (index < 0xC0000000) {
1115 index = env->cpuid_xlevel;
1118 index = env->cpuid_xlevel;
1122 if (index > env->cpuid_level)
1123 index = env->cpuid_level;
1128 *eax = env->cpuid_level;
1129 get_cpuid_vendor(env, ebx, ecx, edx);
1132 *eax = env->cpuid_version;
1133 *ebx = (env->cpuid_apic_id << 24) | 8 << 8; /* CLFLUSH size in quad words, Linux wants it. */
1134 *ecx = env->cpuid_ext_features;
1135 *edx = env->cpuid_features;
1136 if (env->nr_cores * env->nr_threads > 1) {
1137 *ebx |= (env->nr_cores * env->nr_threads) << 16;
1138 *edx |= 1 << 28; /* HTT bit */
1142 /* cache info: needed for Pentium Pro compatibility */
1149 /* cache info: needed for Core compatibility */
1150 if (env->nr_cores > 1) {
1151 *eax = (env->nr_cores - 1) << 26;
1156 case 0: /* L1 dcache info */
1162 case 1: /* L1 icache info */
1168 case 2: /* L2 cache info */
1170 if (env->nr_threads > 1) {
1171 *eax |= (env->nr_threads - 1) << 14;
1177 default: /* end of info */
1186 /* mwait info: needed for Core compatibility */
1187 *eax = 0; /* Smallest monitor-line size in bytes */
1188 *ebx = 0; /* Largest monitor-line size in bytes */
1189 *ecx = CPUID_MWAIT_EMX | CPUID_MWAIT_IBE;
1193 /* Thermal and Power Leaf */
1200 if (kvm_enabled()) {
1201 KVMState *s = env->kvm_state;
1203 *eax = kvm_arch_get_supported_cpuid(s, 0x7, count, R_EAX);
1204 *ebx = kvm_arch_get_supported_cpuid(s, 0x7, count, R_EBX);
1205 *ecx = kvm_arch_get_supported_cpuid(s, 0x7, count, R_ECX);
1206 *edx = kvm_arch_get_supported_cpuid(s, 0x7, count, R_EDX);
1215 /* Direct Cache Access Information Leaf */
1216 *eax = 0; /* Bits 0-31 in DCA_CAP MSR */
1222 /* Architectural Performance Monitoring Leaf */
1223 if (kvm_enabled()) {
1224 KVMState *s = env->kvm_state;
1226 *eax = kvm_arch_get_supported_cpuid(s, 0xA, count, R_EAX);
1227 *ebx = kvm_arch_get_supported_cpuid(s, 0xA, count, R_EBX);
1228 *ecx = kvm_arch_get_supported_cpuid(s, 0xA, count, R_ECX);
1229 *edx = kvm_arch_get_supported_cpuid(s, 0xA, count, R_EDX);
1238 /* Processor Extended State */
1239 if (!(env->cpuid_ext_features & CPUID_EXT_XSAVE)) {
1246 if (kvm_enabled()) {
1247 KVMState *s = env->kvm_state;
1249 *eax = kvm_arch_get_supported_cpuid(s, 0xd, count, R_EAX);
1250 *ebx = kvm_arch_get_supported_cpuid(s, 0xd, count, R_EBX);
1251 *ecx = kvm_arch_get_supported_cpuid(s, 0xd, count, R_ECX);
1252 *edx = kvm_arch_get_supported_cpuid(s, 0xd, count, R_EDX);
1261 *eax = env->cpuid_xlevel;
1262 *ebx = env->cpuid_vendor1;
1263 *edx = env->cpuid_vendor2;
1264 *ecx = env->cpuid_vendor3;
1267 *eax = env->cpuid_version;
1269 *ecx = env->cpuid_ext3_features;
1270 *edx = env->cpuid_ext2_features;
1272 /* The Linux kernel checks for the CMPLegacy bit and
1273 * discards multiple thread information if it is set.
1274 * So dont set it here for Intel to make Linux guests happy.
1276 if (env->nr_cores * env->nr_threads > 1) {
1277 uint32_t tebx, tecx, tedx;
1278 get_cpuid_vendor(env, &tebx, &tecx, &tedx);
1279 if (tebx != CPUID_VENDOR_INTEL_1 ||
1280 tedx != CPUID_VENDOR_INTEL_2 ||
1281 tecx != CPUID_VENDOR_INTEL_3) {
1282 *ecx |= 1 << 1; /* CmpLegacy bit */
1289 *eax = env->cpuid_model[(index - 0x80000002) * 4 + 0];
1290 *ebx = env->cpuid_model[(index - 0x80000002) * 4 + 1];
1291 *ecx = env->cpuid_model[(index - 0x80000002) * 4 + 2];
1292 *edx = env->cpuid_model[(index - 0x80000002) * 4 + 3];
1295 /* cache info (L1 cache) */
1302 /* cache info (L2 cache) */
1309 /* virtual & phys address size in low 2 bytes. */
1310 /* XXX: This value must match the one used in the MMU code. */
1311 if (env->cpuid_ext2_features & CPUID_EXT2_LM) {
1312 /* 64 bit processor */
1313 /* XXX: The physical address space is limited to 42 bits in exec.c. */
1314 *eax = 0x00003028; /* 48 bits virtual, 40 bits physical */
1316 if (env->cpuid_features & CPUID_PSE36)
1317 *eax = 0x00000024; /* 36 bits physical */
1319 *eax = 0x00000020; /* 32 bits physical */
1324 if (env->nr_cores * env->nr_threads > 1) {
1325 *ecx |= (env->nr_cores * env->nr_threads) - 1;
1329 if (env->cpuid_ext3_features & CPUID_EXT3_SVM) {
1330 *eax = 0x00000001; /* SVM Revision */
1331 *ebx = 0x00000010; /* nr of ASIDs */
1333 *edx = env->cpuid_svm_features; /* optional features */
1342 *eax = env->cpuid_xlevel2;
1348 /* Support for VIA CPU's CPUID instruction */
1349 *eax = env->cpuid_version;
1352 *edx = env->cpuid_ext4_features;
1357 /* Reserved for the future, and now filled with zero */
1364 /* reserved values: zero */
1373 /* CPUClass::reset() */
1374 static void x86_cpu_reset(CPUState *s)
1376 X86CPU *cpu = X86_CPU(s);
1377 X86CPUClass *xcc = X86_CPU_GET_CLASS(cpu);
1378 CPUX86State *env = &cpu->env;
1381 if (qemu_loglevel_mask(CPU_LOG_RESET)) {
1382 qemu_log("CPU Reset (CPU %d)\n", env->cpu_index);
1383 log_cpu_state(env, X86_DUMP_FPU | X86_DUMP_CCOP);
1386 xcc->parent_reset(s);
1389 memset(env, 0, offsetof(CPUX86State, breakpoints));
1393 env->old_exception = -1;
1395 /* init to reset state */
1397 #ifdef CONFIG_SOFTMMU
1398 env->hflags |= HF_SOFTMMU_MASK;
1400 env->hflags2 |= HF2_GIF_MASK;
1402 cpu_x86_update_cr0(env, 0x60000010);
1403 env->a20_mask = ~0x0;
1404 env->smbase = 0x30000;
1406 env->idt.limit = 0xffff;
1407 env->gdt.limit = 0xffff;
1408 env->ldt.limit = 0xffff;
1409 env->ldt.flags = DESC_P_MASK | (2 << DESC_TYPE_SHIFT);
1410 env->tr.limit = 0xffff;
1411 env->tr.flags = DESC_P_MASK | (11 << DESC_TYPE_SHIFT);
1413 cpu_x86_load_seg_cache(env, R_CS, 0xf000, 0xffff0000, 0xffff,
1414 DESC_P_MASK | DESC_S_MASK | DESC_CS_MASK |
1415 DESC_R_MASK | DESC_A_MASK);
1416 cpu_x86_load_seg_cache(env, R_DS, 0, 0, 0xffff,
1417 DESC_P_MASK | DESC_S_MASK | DESC_W_MASK |
1419 cpu_x86_load_seg_cache(env, R_ES, 0, 0, 0xffff,
1420 DESC_P_MASK | DESC_S_MASK | DESC_W_MASK |
1422 cpu_x86_load_seg_cache(env, R_SS, 0, 0, 0xffff,
1423 DESC_P_MASK | DESC_S_MASK | DESC_W_MASK |
1425 cpu_x86_load_seg_cache(env, R_FS, 0, 0, 0xffff,
1426 DESC_P_MASK | DESC_S_MASK | DESC_W_MASK |
1428 cpu_x86_load_seg_cache(env, R_GS, 0, 0, 0xffff,
1429 DESC_P_MASK | DESC_S_MASK | DESC_W_MASK |
1433 env->regs[R_EDX] = env->cpuid_version;
1438 for (i = 0; i < 8; i++) {
1443 env->mxcsr = 0x1f80;
1445 env->pat = 0x0007040600070406ULL;
1446 env->msr_ia32_misc_enable = MSR_IA32_MISC_ENABLE_DEFAULT;
1448 memset(env->dr, 0, sizeof(env->dr));
1449 env->dr[6] = DR6_FIXED_1;
1450 env->dr[7] = DR7_FIXED_1;
1451 cpu_breakpoint_remove_all(env, BP_CPU);
1452 cpu_watchpoint_remove_all(env, BP_CPU);
1455 static void mce_init(X86CPU *cpu)
1457 CPUX86State *cenv = &cpu->env;
1460 if (((cenv->cpuid_version >> 8) & 0xf) >= 6
1461 && (cenv->cpuid_features & (CPUID_MCE | CPUID_MCA)) ==
1462 (CPUID_MCE | CPUID_MCA)) {
1463 cenv->mcg_cap = MCE_CAP_DEF | MCE_BANKS_DEF;
1464 cenv->mcg_ctl = ~(uint64_t)0;
1465 for (bank = 0; bank < MCE_BANKS_DEF; bank++) {
1466 cenv->mce_banks[bank * 4] = ~(uint64_t)0;
1471 static void x86_cpu_initfn(Object *obj)
1473 X86CPU *cpu = X86_CPU(obj);
1474 CPUX86State *env = &cpu->env;
1477 env->cpuid_apic_id = env->cpu_index;
1481 static void x86_cpu_common_class_init(ObjectClass *oc, void *data)
1483 X86CPUClass *xcc = X86_CPU_CLASS(oc);
1484 CPUClass *cc = CPU_CLASS(oc);
1486 xcc->parent_reset = cc->reset;
1487 cc->reset = x86_cpu_reset;
1490 static const TypeInfo x86_cpu_type_info = {
1491 .name = TYPE_X86_CPU,
1493 .instance_size = sizeof(X86CPU),
1494 .instance_init = x86_cpu_initfn,
1496 .class_size = sizeof(X86CPUClass),
1497 .class_init = x86_cpu_common_class_init,
1500 static void x86_cpu_register_types(void)
1502 type_register_static(&x86_cpu_type_info);
1505 type_init(x86_cpu_register_types)