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1 | /* | |
2 | * i386 CPUID helper functions | |
3 | * | |
4 | * Copyright (c) 2003 Fabrice Bellard | |
5 | * | |
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. | |
10 | * | |
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. | |
15 | * | |
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/>. | |
18 | */ | |
19 | #include <stdlib.h> | |
20 | #include <stdio.h> | |
21 | #include <string.h> | |
22 | #include <inttypes.h> | |
23 | ||
24 | #include "cpu.h" | |
25 | #include "kvm.h" | |
26 | ||
27 | #include "qemu-option.h" | |
28 | #include "qemu-config.h" | |
29 | ||
30 | /* feature flags taken from "Intel Processor Identification and the CPUID | |
31 | * Instruction" and AMD's "CPUID Specification". In cases of disagreement | |
32 | * between feature naming conventions, aliases may be added. | |
33 | */ | |
34 | static const char *feature_name[] = { | |
35 | "fpu", "vme", "de", "pse", | |
36 | "tsc", "msr", "pae", "mce", | |
37 | "cx8", "apic", NULL, "sep", | |
38 | "mtrr", "pge", "mca", "cmov", | |
39 | "pat", "pse36", "pn" /* Intel psn */, "clflush" /* Intel clfsh */, | |
40 | NULL, "ds" /* Intel dts */, "acpi", "mmx", | |
41 | "fxsr", "sse", "sse2", "ss", | |
42 | "ht" /* Intel htt */, "tm", "ia64", "pbe", | |
43 | }; | |
44 | static const char *ext_feature_name[] = { | |
45 | "pni|sse3" /* Intel,AMD sse3 */, NULL, NULL, "monitor", | |
46 | "ds_cpl", "vmx", NULL /* Linux smx */, "est", | |
47 | "tm2", "ssse3", "cid", NULL, | |
48 | NULL, "cx16", "xtpr", NULL, | |
49 | NULL, NULL, "dca", "sse4.1|sse4_1", | |
50 | "sse4.2|sse4_2", "x2apic", NULL, "popcnt", | |
51 | NULL, NULL, NULL, NULL, | |
52 | NULL, NULL, NULL, "hypervisor", | |
53 | }; | |
54 | static const char *ext2_feature_name[] = { | |
55 | "fpu", "vme", "de", "pse", | |
56 | "tsc", "msr", "pae", "mce", | |
57 | "cx8" /* AMD CMPXCHG8B */, "apic", NULL, "syscall", | |
58 | "mtrr", "pge", "mca", "cmov", | |
59 | "pat", "pse36", NULL, NULL /* Linux mp */, | |
60 | "nx" /* Intel xd */, NULL, "mmxext", "mmx", | |
61 | "fxsr", "fxsr_opt" /* AMD ffxsr */, "pdpe1gb" /* AMD Page1GB */, "rdtscp", | |
62 | NULL, "lm" /* Intel 64 */, "3dnowext", "3dnow", | |
63 | }; | |
64 | static const char *ext3_feature_name[] = { | |
65 | "lahf_lm" /* AMD LahfSahf */, "cmp_legacy", "svm", "extapic" /* AMD ExtApicSpace */, | |
66 | "cr8legacy" /* AMD AltMovCr8 */, "abm", "sse4a", "misalignsse", | |
67 | "3dnowprefetch", "osvw", NULL /* Linux ibs */, NULL, | |
68 | "skinit", "wdt", NULL, NULL, | |
69 | NULL, NULL, NULL, NULL, | |
70 | NULL, NULL, NULL, NULL, | |
71 | NULL, NULL, NULL, NULL, | |
72 | NULL, NULL, NULL, NULL, | |
73 | }; | |
74 | ||
75 | static const char *kvm_feature_name[] = { | |
76 | "kvmclock", "kvm_nopiodelay", "kvm_mmu", NULL, NULL, NULL, NULL, NULL, | |
77 | NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, | |
78 | NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, | |
79 | NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, | |
80 | }; | |
81 | ||
82 | /* collects per-function cpuid data | |
83 | */ | |
84 | typedef struct model_features_t { | |
85 | uint32_t *guest_feat; | |
86 | uint32_t *host_feat; | |
87 | uint32_t check_feat; | |
88 | const char **flag_names; | |
89 | uint32_t cpuid; | |
90 | } model_features_t; | |
91 | ||
92 | int check_cpuid = 0; | |
93 | int enforce_cpuid = 0; | |
94 | ||
95 | static void host_cpuid(uint32_t function, uint32_t count, uint32_t *eax, | |
96 | uint32_t *ebx, uint32_t *ecx, uint32_t *edx); | |
97 | ||
98 | #define iswhite(c) ((c) && ((c) <= ' ' || '~' < (c))) | |
99 | ||
100 | /* general substring compare of *[s1..e1) and *[s2..e2). sx is start of | |
101 | * a substring. ex if !NULL points to the first char after a substring, | |
102 | * otherwise the string is assumed to sized by a terminating nul. | |
103 | * Return lexical ordering of *s1:*s2. | |
104 | */ | |
105 | static int sstrcmp(const char *s1, const char *e1, const char *s2, | |
106 | const char *e2) | |
107 | { | |
108 | for (;;) { | |
109 | if (!*s1 || !*s2 || *s1 != *s2) | |
110 | return (*s1 - *s2); | |
111 | ++s1, ++s2; | |
112 | if (s1 == e1 && s2 == e2) | |
113 | return (0); | |
114 | else if (s1 == e1) | |
115 | return (*s2); | |
116 | else if (s2 == e2) | |
117 | return (*s1); | |
118 | } | |
119 | } | |
120 | ||
121 | /* compare *[s..e) to *altstr. *altstr may be a simple string or multiple | |
122 | * '|' delimited (possibly empty) strings in which case search for a match | |
123 | * within the alternatives proceeds left to right. Return 0 for success, | |
124 | * non-zero otherwise. | |
125 | */ | |
126 | static int altcmp(const char *s, const char *e, const char *altstr) | |
127 | { | |
128 | const char *p, *q; | |
129 | ||
130 | for (q = p = altstr; ; ) { | |
131 | while (*p && *p != '|') | |
132 | ++p; | |
133 | if ((q == p && !*s) || (q != p && !sstrcmp(s, e, q, p))) | |
134 | return (0); | |
135 | if (!*p) | |
136 | return (1); | |
137 | else | |
138 | q = ++p; | |
139 | } | |
140 | } | |
141 | ||
142 | /* search featureset for flag *[s..e), if found set corresponding bit in | |
143 | * *pval and return success, otherwise return zero | |
144 | */ | |
145 | static int lookup_feature(uint32_t *pval, const char *s, const char *e, | |
146 | const char **featureset) | |
147 | { | |
148 | uint32_t mask; | |
149 | const char **ppc; | |
150 | ||
151 | for (mask = 1, ppc = featureset; mask; mask <<= 1, ++ppc) | |
152 | if (*ppc && !altcmp(s, e, *ppc)) { | |
153 | *pval |= mask; | |
154 | break; | |
155 | } | |
156 | return (mask ? 1 : 0); | |
157 | } | |
158 | ||
159 | static void add_flagname_to_bitmaps(const char *flagname, uint32_t *features, | |
160 | uint32_t *ext_features, | |
161 | uint32_t *ext2_features, | |
162 | uint32_t *ext3_features, | |
163 | uint32_t *kvm_features) | |
164 | { | |
165 | if (!lookup_feature(features, flagname, NULL, feature_name) && | |
166 | !lookup_feature(ext_features, flagname, NULL, ext_feature_name) && | |
167 | !lookup_feature(ext2_features, flagname, NULL, ext2_feature_name) && | |
168 | !lookup_feature(ext3_features, flagname, NULL, ext3_feature_name) && | |
169 | !lookup_feature(kvm_features, flagname, NULL, kvm_feature_name)) | |
170 | fprintf(stderr, "CPU feature %s not found\n", flagname); | |
171 | } | |
172 | ||
173 | typedef struct x86_def_t { | |
174 | struct x86_def_t *next; | |
175 | const char *name; | |
176 | uint32_t level; | |
177 | uint32_t vendor1, vendor2, vendor3; | |
178 | int family; | |
179 | int model; | |
180 | int stepping; | |
181 | uint32_t features, ext_features, ext2_features, ext3_features, kvm_features; | |
182 | uint32_t xlevel; | |
183 | char model_id[48]; | |
184 | int vendor_override; | |
185 | uint32_t flags; | |
186 | } x86_def_t; | |
187 | ||
188 | #define I486_FEATURES (CPUID_FP87 | CPUID_VME | CPUID_PSE) | |
189 | #define PENTIUM_FEATURES (I486_FEATURES | CPUID_DE | CPUID_TSC | \ | |
190 | CPUID_MSR | CPUID_MCE | CPUID_CX8 | CPUID_MMX | CPUID_APIC) | |
191 | #define PENTIUM2_FEATURES (PENTIUM_FEATURES | CPUID_PAE | CPUID_SEP | \ | |
192 | CPUID_MTRR | CPUID_PGE | CPUID_MCA | CPUID_CMOV | CPUID_PAT | \ | |
193 | CPUID_PSE36 | CPUID_FXSR) | |
194 | #define PENTIUM3_FEATURES (PENTIUM2_FEATURES | CPUID_SSE) | |
195 | #define PPRO_FEATURES (CPUID_FP87 | CPUID_DE | CPUID_PSE | CPUID_TSC | \ | |
196 | CPUID_MSR | CPUID_MCE | CPUID_CX8 | CPUID_PGE | CPUID_CMOV | \ | |
197 | CPUID_PAT | CPUID_FXSR | CPUID_MMX | CPUID_SSE | CPUID_SSE2 | \ | |
198 | CPUID_PAE | CPUID_SEP | CPUID_APIC) | |
199 | ||
200 | /* maintains list of cpu model definitions | |
201 | */ | |
202 | static x86_def_t *x86_defs = {NULL}; | |
203 | ||
204 | /* built-in cpu model definitions (deprecated) | |
205 | */ | |
206 | static x86_def_t builtin_x86_defs[] = { | |
207 | #ifdef TARGET_X86_64 | |
208 | { | |
209 | .name = "qemu64", | |
210 | .level = 4, | |
211 | .vendor1 = CPUID_VENDOR_AMD_1, | |
212 | .vendor2 = CPUID_VENDOR_AMD_2, | |
213 | .vendor3 = CPUID_VENDOR_AMD_3, | |
214 | .family = 6, | |
215 | .model = 2, | |
216 | .stepping = 3, | |
217 | .features = PPRO_FEATURES | | |
218 | /* these features are needed for Win64 and aren't fully implemented */ | |
219 | CPUID_MTRR | CPUID_CLFLUSH | CPUID_MCA | | |
220 | /* this feature is needed for Solaris and isn't fully implemented */ | |
221 | CPUID_PSE36, | |
222 | .ext_features = CPUID_EXT_SSE3 | CPUID_EXT_CX16 | CPUID_EXT_POPCNT, | |
223 | .ext2_features = (PPRO_FEATURES & 0x0183F3FF) | | |
224 | CPUID_EXT2_LM | CPUID_EXT2_SYSCALL | CPUID_EXT2_NX, | |
225 | .ext3_features = CPUID_EXT3_LAHF_LM | CPUID_EXT3_SVM | | |
226 | CPUID_EXT3_ABM | CPUID_EXT3_SSE4A, | |
227 | .xlevel = 0x8000000A, | |
228 | .model_id = "QEMU Virtual CPU version " QEMU_VERSION, | |
229 | }, | |
230 | { | |
231 | .name = "phenom", | |
232 | .level = 5, | |
233 | .vendor1 = CPUID_VENDOR_AMD_1, | |
234 | .vendor2 = CPUID_VENDOR_AMD_2, | |
235 | .vendor3 = CPUID_VENDOR_AMD_3, | |
236 | .family = 16, | |
237 | .model = 2, | |
238 | .stepping = 3, | |
239 | /* Missing: CPUID_VME, CPUID_HT */ | |
240 | .features = PPRO_FEATURES | | |
241 | CPUID_MTRR | CPUID_CLFLUSH | CPUID_MCA | | |
242 | CPUID_PSE36, | |
243 | .ext_features = CPUID_EXT_SSE3 | CPUID_EXT_MONITOR | CPUID_EXT_CX16 | | |
244 | CPUID_EXT_POPCNT, | |
245 | /* Missing: CPUID_EXT2_PDPE1GB, CPUID_EXT2_RDTSCP */ | |
246 | .ext2_features = (PPRO_FEATURES & 0x0183F3FF) | | |
247 | CPUID_EXT2_LM | CPUID_EXT2_SYSCALL | CPUID_EXT2_NX | | |
248 | CPUID_EXT2_3DNOW | CPUID_EXT2_3DNOWEXT | CPUID_EXT2_MMXEXT | | |
249 | CPUID_EXT2_FFXSR, | |
250 | /* Missing: CPUID_EXT3_CMP_LEG, CPUID_EXT3_EXTAPIC, | |
251 | CPUID_EXT3_CR8LEG, | |
252 | CPUID_EXT3_MISALIGNSSE, CPUID_EXT3_3DNOWPREFETCH, | |
253 | CPUID_EXT3_OSVW, CPUID_EXT3_IBS */ | |
254 | .ext3_features = CPUID_EXT3_LAHF_LM | CPUID_EXT3_SVM | | |
255 | CPUID_EXT3_ABM | CPUID_EXT3_SSE4A, | |
256 | .xlevel = 0x8000001A, | |
257 | .model_id = "AMD Phenom(tm) 9550 Quad-Core Processor" | |
258 | }, | |
259 | { | |
260 | .name = "core2duo", | |
261 | .level = 10, | |
262 | .family = 6, | |
263 | .model = 15, | |
264 | .stepping = 11, | |
265 | /* The original CPU also implements these features: | |
266 | CPUID_VME, CPUID_DTS, CPUID_ACPI, CPUID_SS, CPUID_HT, | |
267 | CPUID_TM, CPUID_PBE */ | |
268 | .features = PPRO_FEATURES | | |
269 | CPUID_MTRR | CPUID_CLFLUSH | CPUID_MCA | | |
270 | CPUID_PSE36, | |
271 | /* The original CPU also implements these ext features: | |
272 | CPUID_EXT_DTES64, CPUID_EXT_DSCPL, CPUID_EXT_VMX, CPUID_EXT_EST, | |
273 | CPUID_EXT_TM2, CPUID_EXT_CX16, CPUID_EXT_XTPR, CPUID_EXT_PDCM */ | |
274 | .ext_features = CPUID_EXT_SSE3 | CPUID_EXT_MONITOR | CPUID_EXT_SSSE3, | |
275 | .ext2_features = CPUID_EXT2_LM | CPUID_EXT2_SYSCALL | CPUID_EXT2_NX, | |
276 | .ext3_features = CPUID_EXT3_LAHF_LM, | |
277 | .xlevel = 0x80000008, | |
278 | .model_id = "Intel(R) Core(TM)2 Duo CPU T7700 @ 2.40GHz", | |
279 | }, | |
280 | { | |
281 | .name = "kvm64", | |
282 | .level = 5, | |
283 | .vendor1 = CPUID_VENDOR_INTEL_1, | |
284 | .vendor2 = CPUID_VENDOR_INTEL_2, | |
285 | .vendor3 = CPUID_VENDOR_INTEL_3, | |
286 | .family = 15, | |
287 | .model = 6, | |
288 | .stepping = 1, | |
289 | /* Missing: CPUID_VME, CPUID_HT */ | |
290 | .features = PPRO_FEATURES | | |
291 | CPUID_MTRR | CPUID_CLFLUSH | CPUID_MCA | | |
292 | CPUID_PSE36, | |
293 | /* Missing: CPUID_EXT_POPCNT, CPUID_EXT_MONITOR */ | |
294 | .ext_features = CPUID_EXT_SSE3 | CPUID_EXT_CX16, | |
295 | /* Missing: CPUID_EXT2_PDPE1GB, CPUID_EXT2_RDTSCP */ | |
296 | .ext2_features = (PPRO_FEATURES & 0x0183F3FF) | | |
297 | CPUID_EXT2_LM | CPUID_EXT2_SYSCALL | CPUID_EXT2_NX, | |
298 | /* Missing: CPUID_EXT3_LAHF_LM, CPUID_EXT3_CMP_LEG, CPUID_EXT3_EXTAPIC, | |
299 | CPUID_EXT3_CR8LEG, CPUID_EXT3_ABM, CPUID_EXT3_SSE4A, | |
300 | CPUID_EXT3_MISALIGNSSE, CPUID_EXT3_3DNOWPREFETCH, | |
301 | CPUID_EXT3_OSVW, CPUID_EXT3_IBS, CPUID_EXT3_SVM */ | |
302 | .ext3_features = 0, | |
303 | .xlevel = 0x80000008, | |
304 | .model_id = "Common KVM processor" | |
305 | }, | |
306 | #endif | |
307 | { | |
308 | .name = "qemu32", | |
309 | .level = 4, | |
310 | .family = 6, | |
311 | .model = 3, | |
312 | .stepping = 3, | |
313 | .features = PPRO_FEATURES, | |
314 | .ext_features = CPUID_EXT_SSE3 | CPUID_EXT_POPCNT, | |
315 | .xlevel = 0, | |
316 | .model_id = "QEMU Virtual CPU version " QEMU_VERSION, | |
317 | }, | |
318 | { | |
319 | .name = "coreduo", | |
320 | .level = 10, | |
321 | .family = 6, | |
322 | .model = 14, | |
323 | .stepping = 8, | |
324 | /* The original CPU also implements these features: | |
325 | CPUID_DTS, CPUID_ACPI, CPUID_SS, CPUID_HT, | |
326 | CPUID_TM, CPUID_PBE */ | |
327 | .features = PPRO_FEATURES | CPUID_VME | | |
328 | CPUID_MTRR | CPUID_CLFLUSH | CPUID_MCA, | |
329 | /* The original CPU also implements these ext features: | |
330 | CPUID_EXT_VMX, CPUID_EXT_EST, CPUID_EXT_TM2, CPUID_EXT_XTPR, | |
331 | CPUID_EXT_PDCM */ | |
332 | .ext_features = CPUID_EXT_SSE3 | CPUID_EXT_MONITOR, | |
333 | .ext2_features = CPUID_EXT2_NX, | |
334 | .xlevel = 0x80000008, | |
335 | .model_id = "Genuine Intel(R) CPU T2600 @ 2.16GHz", | |
336 | }, | |
337 | { | |
338 | .name = "486", | |
339 | .level = 0, | |
340 | .family = 4, | |
341 | .model = 0, | |
342 | .stepping = 0, | |
343 | .features = I486_FEATURES, | |
344 | .xlevel = 0, | |
345 | }, | |
346 | { | |
347 | .name = "pentium", | |
348 | .level = 1, | |
349 | .family = 5, | |
350 | .model = 4, | |
351 | .stepping = 3, | |
352 | .features = PENTIUM_FEATURES, | |
353 | .xlevel = 0, | |
354 | }, | |
355 | { | |
356 | .name = "pentium2", | |
357 | .level = 2, | |
358 | .family = 6, | |
359 | .model = 5, | |
360 | .stepping = 2, | |
361 | .features = PENTIUM2_FEATURES, | |
362 | .xlevel = 0, | |
363 | }, | |
364 | { | |
365 | .name = "pentium3", | |
366 | .level = 2, | |
367 | .family = 6, | |
368 | .model = 7, | |
369 | .stepping = 3, | |
370 | .features = PENTIUM3_FEATURES, | |
371 | .xlevel = 0, | |
372 | }, | |
373 | { | |
374 | .name = "athlon", | |
375 | .level = 2, | |
376 | .vendor1 = CPUID_VENDOR_AMD_1, | |
377 | .vendor2 = CPUID_VENDOR_AMD_2, | |
378 | .vendor3 = CPUID_VENDOR_AMD_3, | |
379 | .family = 6, | |
380 | .model = 2, | |
381 | .stepping = 3, | |
382 | .features = PPRO_FEATURES | CPUID_PSE36 | CPUID_VME | CPUID_MTRR | CPUID_MCA, | |
383 | .ext2_features = (PPRO_FEATURES & 0x0183F3FF) | CPUID_EXT2_MMXEXT | CPUID_EXT2_3DNOW | CPUID_EXT2_3DNOWEXT, | |
384 | .xlevel = 0x80000008, | |
385 | /* XXX: put another string ? */ | |
386 | .model_id = "QEMU Virtual CPU version " QEMU_VERSION, | |
387 | }, | |
388 | { | |
389 | .name = "n270", | |
390 | /* original is on level 10 */ | |
391 | .level = 5, | |
392 | .family = 6, | |
393 | .model = 28, | |
394 | .stepping = 2, | |
395 | .features = PPRO_FEATURES | | |
396 | CPUID_MTRR | CPUID_CLFLUSH | CPUID_MCA | CPUID_VME, | |
397 | /* Missing: CPUID_DTS | CPUID_ACPI | CPUID_SS | | |
398 | * CPUID_HT | CPUID_TM | CPUID_PBE */ | |
399 | /* Some CPUs got no CPUID_SEP */ | |
400 | .ext_features = CPUID_EXT_MONITOR | | |
401 | CPUID_EXT_SSE3 /* PNI */ | CPUID_EXT_SSSE3, | |
402 | /* Missing: CPUID_EXT_DSCPL | CPUID_EXT_EST | | |
403 | * CPUID_EXT_TM2 | CPUID_EXT_XTPR */ | |
404 | .ext2_features = (PPRO_FEATURES & 0x0183F3FF) | CPUID_EXT2_NX, | |
405 | /* Missing: .ext3_features = CPUID_EXT3_LAHF_LM */ | |
406 | .xlevel = 0x8000000A, | |
407 | .model_id = "Intel(R) Atom(TM) CPU N270 @ 1.60GHz", | |
408 | }, | |
409 | }; | |
410 | ||
411 | static int cpu_x86_fill_model_id(char *str) | |
412 | { | |
413 | uint32_t eax = 0, ebx = 0, ecx = 0, edx = 0; | |
414 | int i; | |
415 | ||
416 | for (i = 0; i < 3; i++) { | |
417 | host_cpuid(0x80000002 + i, 0, &eax, &ebx, &ecx, &edx); | |
418 | memcpy(str + i * 16 + 0, &eax, 4); | |
419 | memcpy(str + i * 16 + 4, &ebx, 4); | |
420 | memcpy(str + i * 16 + 8, &ecx, 4); | |
421 | memcpy(str + i * 16 + 12, &edx, 4); | |
422 | } | |
423 | return 0; | |
424 | } | |
425 | ||
426 | static int cpu_x86_fill_host(x86_def_t *x86_cpu_def) | |
427 | { | |
428 | uint32_t eax = 0, ebx = 0, ecx = 0, edx = 0; | |
429 | ||
430 | x86_cpu_def->name = "host"; | |
431 | host_cpuid(0x0, 0, &eax, &ebx, &ecx, &edx); | |
432 | x86_cpu_def->level = eax; | |
433 | x86_cpu_def->vendor1 = ebx; | |
434 | x86_cpu_def->vendor2 = edx; | |
435 | x86_cpu_def->vendor3 = ecx; | |
436 | ||
437 | host_cpuid(0x1, 0, &eax, &ebx, &ecx, &edx); | |
438 | x86_cpu_def->family = ((eax >> 8) & 0x0F) + ((eax >> 20) & 0xFF); | |
439 | x86_cpu_def->model = ((eax >> 4) & 0x0F) | ((eax & 0xF0000) >> 12); | |
440 | x86_cpu_def->stepping = eax & 0x0F; | |
441 | x86_cpu_def->ext_features = ecx; | |
442 | x86_cpu_def->features = edx; | |
443 | ||
444 | host_cpuid(0x80000000, 0, &eax, &ebx, &ecx, &edx); | |
445 | x86_cpu_def->xlevel = eax; | |
446 | ||
447 | host_cpuid(0x80000001, 0, &eax, &ebx, &ecx, &edx); | |
448 | x86_cpu_def->ext2_features = edx; | |
449 | x86_cpu_def->ext3_features = ecx; | |
450 | cpu_x86_fill_model_id(x86_cpu_def->model_id); | |
451 | x86_cpu_def->vendor_override = 0; | |
452 | ||
453 | return 0; | |
454 | } | |
455 | ||
456 | static int unavailable_host_feature(struct model_features_t *f, uint32_t mask) | |
457 | { | |
458 | int i; | |
459 | ||
460 | for (i = 0; i < 32; ++i) | |
461 | if (1 << i & mask) { | |
462 | fprintf(stderr, "warning: host cpuid %04x_%04x lacks requested" | |
463 | " flag '%s' [0x%08x]\n", | |
464 | f->cpuid >> 16, f->cpuid & 0xffff, | |
465 | f->flag_names[i] ? f->flag_names[i] : "[reserved]", mask); | |
466 | break; | |
467 | } | |
468 | return 0; | |
469 | } | |
470 | ||
471 | /* best effort attempt to inform user requested cpu flags aren't making | |
472 | * their way to the guest. Note: ft[].check_feat ideally should be | |
473 | * specified via a guest_def field to suppress report of extraneous flags. | |
474 | */ | |
475 | static int check_features_against_host(x86_def_t *guest_def) | |
476 | { | |
477 | x86_def_t host_def; | |
478 | uint32_t mask; | |
479 | int rv, i; | |
480 | struct model_features_t ft[] = { | |
481 | {&guest_def->features, &host_def.features, | |
482 | ~0, feature_name, 0x00000000}, | |
483 | {&guest_def->ext_features, &host_def.ext_features, | |
484 | ~CPUID_EXT_HYPERVISOR, ext_feature_name, 0x00000001}, | |
485 | {&guest_def->ext2_features, &host_def.ext2_features, | |
486 | ~PPRO_FEATURES, ext2_feature_name, 0x80000000}, | |
487 | {&guest_def->ext3_features, &host_def.ext3_features, | |
488 | ~CPUID_EXT3_SVM, ext3_feature_name, 0x80000001}}; | |
489 | ||
490 | cpu_x86_fill_host(&host_def); | |
491 | for (rv = 0, i = 0; i < sizeof (ft) / sizeof (ft[0]); ++i) | |
492 | for (mask = 1; mask; mask <<= 1) | |
493 | if (ft[i].check_feat & mask && *ft[i].guest_feat & mask && | |
494 | !(*ft[i].host_feat & mask)) { | |
495 | unavailable_host_feature(&ft[i], mask); | |
496 | rv = 1; | |
497 | } | |
498 | return rv; | |
499 | } | |
500 | ||
501 | static int cpu_x86_find_by_name(x86_def_t *x86_cpu_def, const char *cpu_model) | |
502 | { | |
503 | unsigned int i; | |
504 | x86_def_t *def; | |
505 | ||
506 | char *s = strdup(cpu_model); | |
507 | char *featurestr, *name = strtok(s, ","); | |
508 | uint32_t plus_features = 0, plus_ext_features = 0, plus_ext2_features = 0, plus_ext3_features = 0, plus_kvm_features = 0; | |
509 | uint32_t minus_features = 0, minus_ext_features = 0, minus_ext2_features = 0, minus_ext3_features = 0, minus_kvm_features = 0; | |
510 | uint32_t numvalue; | |
511 | ||
512 | for (def = x86_defs; def; def = def->next) | |
513 | if (!strcmp(name, def->name)) | |
514 | break; | |
515 | if (kvm_enabled() && strcmp(name, "host") == 0) { | |
516 | cpu_x86_fill_host(x86_cpu_def); | |
517 | } else if (!def) { | |
518 | goto error; | |
519 | } else { | |
520 | memcpy(x86_cpu_def, def, sizeof(*def)); | |
521 | } | |
522 | ||
523 | plus_kvm_features = ~0; /* not supported bits will be filtered out later */ | |
524 | ||
525 | add_flagname_to_bitmaps("hypervisor", &plus_features, | |
526 | &plus_ext_features, &plus_ext2_features, &plus_ext3_features, | |
527 | &plus_kvm_features); | |
528 | ||
529 | featurestr = strtok(NULL, ","); | |
530 | ||
531 | while (featurestr) { | |
532 | char *val; | |
533 | if (featurestr[0] == '+') { | |
534 | add_flagname_to_bitmaps(featurestr + 1, &plus_features, &plus_ext_features, &plus_ext2_features, &plus_ext3_features, &plus_kvm_features); | |
535 | } else if (featurestr[0] == '-') { | |
536 | add_flagname_to_bitmaps(featurestr + 1, &minus_features, &minus_ext_features, &minus_ext2_features, &minus_ext3_features, &minus_kvm_features); | |
537 | } else if ((val = strchr(featurestr, '='))) { | |
538 | *val = 0; val++; | |
539 | if (!strcmp(featurestr, "family")) { | |
540 | char *err; | |
541 | numvalue = strtoul(val, &err, 0); | |
542 | if (!*val || *err) { | |
543 | fprintf(stderr, "bad numerical value %s\n", val); | |
544 | goto error; | |
545 | } | |
546 | x86_cpu_def->family = numvalue; | |
547 | } else if (!strcmp(featurestr, "model")) { | |
548 | char *err; | |
549 | numvalue = strtoul(val, &err, 0); | |
550 | if (!*val || *err || numvalue > 0xff) { | |
551 | fprintf(stderr, "bad numerical value %s\n", val); | |
552 | goto error; | |
553 | } | |
554 | x86_cpu_def->model = numvalue; | |
555 | } else if (!strcmp(featurestr, "stepping")) { | |
556 | char *err; | |
557 | numvalue = strtoul(val, &err, 0); | |
558 | if (!*val || *err || numvalue > 0xf) { | |
559 | fprintf(stderr, "bad numerical value %s\n", val); | |
560 | goto error; | |
561 | } | |
562 | x86_cpu_def->stepping = numvalue ; | |
563 | } else if (!strcmp(featurestr, "level")) { | |
564 | char *err; | |
565 | numvalue = strtoul(val, &err, 0); | |
566 | if (!*val || *err) { | |
567 | fprintf(stderr, "bad numerical value %s\n", val); | |
568 | goto error; | |
569 | } | |
570 | x86_cpu_def->level = numvalue; | |
571 | } else if (!strcmp(featurestr, "xlevel")) { | |
572 | char *err; | |
573 | numvalue = strtoul(val, &err, 0); | |
574 | if (!*val || *err) { | |
575 | fprintf(stderr, "bad numerical value %s\n", val); | |
576 | goto error; | |
577 | } | |
578 | if (numvalue < 0x80000000) { | |
579 | numvalue += 0x80000000; | |
580 | } | |
581 | x86_cpu_def->xlevel = numvalue; | |
582 | } else if (!strcmp(featurestr, "vendor")) { | |
583 | if (strlen(val) != 12) { | |
584 | fprintf(stderr, "vendor string must be 12 chars long\n"); | |
585 | goto error; | |
586 | } | |
587 | x86_cpu_def->vendor1 = 0; | |
588 | x86_cpu_def->vendor2 = 0; | |
589 | x86_cpu_def->vendor3 = 0; | |
590 | for(i = 0; i < 4; i++) { | |
591 | x86_cpu_def->vendor1 |= ((uint8_t)val[i ]) << (8 * i); | |
592 | x86_cpu_def->vendor2 |= ((uint8_t)val[i + 4]) << (8 * i); | |
593 | x86_cpu_def->vendor3 |= ((uint8_t)val[i + 8]) << (8 * i); | |
594 | } | |
595 | x86_cpu_def->vendor_override = 1; | |
596 | } else if (!strcmp(featurestr, "model_id")) { | |
597 | pstrcpy(x86_cpu_def->model_id, sizeof(x86_cpu_def->model_id), | |
598 | val); | |
599 | } else { | |
600 | fprintf(stderr, "unrecognized feature %s\n", featurestr); | |
601 | goto error; | |
602 | } | |
603 | } else if (!strcmp(featurestr, "check")) { | |
604 | check_cpuid = 1; | |
605 | } else if (!strcmp(featurestr, "enforce")) { | |
606 | check_cpuid = enforce_cpuid = 1; | |
607 | } else { | |
608 | fprintf(stderr, "feature string `%s' not in format (+feature|-feature|feature=xyz)\n", featurestr); | |
609 | goto error; | |
610 | } | |
611 | featurestr = strtok(NULL, ","); | |
612 | } | |
613 | x86_cpu_def->features |= plus_features; | |
614 | x86_cpu_def->ext_features |= plus_ext_features; | |
615 | x86_cpu_def->ext2_features |= plus_ext2_features; | |
616 | x86_cpu_def->ext3_features |= plus_ext3_features; | |
617 | x86_cpu_def->kvm_features |= plus_kvm_features; | |
618 | x86_cpu_def->features &= ~minus_features; | |
619 | x86_cpu_def->ext_features &= ~minus_ext_features; | |
620 | x86_cpu_def->ext2_features &= ~minus_ext2_features; | |
621 | x86_cpu_def->ext3_features &= ~minus_ext3_features; | |
622 | x86_cpu_def->kvm_features &= ~minus_kvm_features; | |
623 | if (check_cpuid) { | |
624 | if (check_features_against_host(x86_cpu_def) && enforce_cpuid) | |
625 | goto error; | |
626 | } | |
627 | free(s); | |
628 | return 0; | |
629 | ||
630 | error: | |
631 | free(s); | |
632 | return -1; | |
633 | } | |
634 | ||
635 | /* generate a composite string into buf of all cpuid names in featureset | |
636 | * selected by fbits. indicate truncation at bufsize in the event of overflow. | |
637 | * if flags, suppress names undefined in featureset. | |
638 | */ | |
639 | static void listflags(char *buf, int bufsize, uint32_t fbits, | |
640 | const char **featureset, uint32_t flags) | |
641 | { | |
642 | const char **p = &featureset[31]; | |
643 | char *q, *b, bit; | |
644 | int nc; | |
645 | ||
646 | b = 4 <= bufsize ? buf + (bufsize -= 3) - 1 : NULL; | |
647 | *buf = '\0'; | |
648 | for (q = buf, bit = 31; fbits && bufsize; --p, fbits &= ~(1 << bit), --bit) | |
649 | if (fbits & 1 << bit && (*p || !flags)) { | |
650 | if (*p) | |
651 | nc = snprintf(q, bufsize, "%s%s", q == buf ? "" : " ", *p); | |
652 | else | |
653 | nc = snprintf(q, bufsize, "%s[%d]", q == buf ? "" : " ", bit); | |
654 | if (bufsize <= nc) { | |
655 | if (b) { | |
656 | memcpy(b, "...", sizeof("...")); | |
657 | } | |
658 | return; | |
659 | } | |
660 | q += nc; | |
661 | bufsize -= nc; | |
662 | } | |
663 | } | |
664 | ||
665 | /* generate CPU information: | |
666 | * -? list model names | |
667 | * -?model list model names/IDs | |
668 | * -?dump output all model (x86_def_t) data | |
669 | * -?cpuid list all recognized cpuid flag names | |
670 | */ | |
671 | void x86_cpu_list (FILE *f, int (*cpu_fprintf)(FILE *f, const char *fmt, ...), | |
672 | const char *optarg) | |
673 | { | |
674 | unsigned char model = !strcmp("?model", optarg); | |
675 | unsigned char dump = !strcmp("?dump", optarg); | |
676 | unsigned char cpuid = !strcmp("?cpuid", optarg); | |
677 | x86_def_t *def; | |
678 | char buf[256]; | |
679 | ||
680 | if (cpuid) { | |
681 | (*cpu_fprintf)(f, "Recognized CPUID flags:\n"); | |
682 | listflags(buf, sizeof (buf), (uint32_t)~0, feature_name, 1); | |
683 | (*cpu_fprintf)(f, " f_edx: %s\n", buf); | |
684 | listflags(buf, sizeof (buf), (uint32_t)~0, ext_feature_name, 1); | |
685 | (*cpu_fprintf)(f, " f_ecx: %s\n", buf); | |
686 | listflags(buf, sizeof (buf), (uint32_t)~0, ext2_feature_name, 1); | |
687 | (*cpu_fprintf)(f, " extf_edx: %s\n", buf); | |
688 | listflags(buf, sizeof (buf), (uint32_t)~0, ext3_feature_name, 1); | |
689 | (*cpu_fprintf)(f, " extf_ecx: %s\n", buf); | |
690 | return; | |
691 | } | |
692 | for (def = x86_defs; def; def = def->next) { | |
693 | snprintf(buf, sizeof (buf), def->flags ? "[%s]": "%s", def->name); | |
694 | if (model || dump) { | |
695 | (*cpu_fprintf)(f, "x86 %16s %-48s\n", buf, def->model_id); | |
696 | } else { | |
697 | (*cpu_fprintf)(f, "x86 %16s\n", buf); | |
698 | } | |
699 | if (dump) { | |
700 | memcpy(buf, &def->vendor1, sizeof (def->vendor1)); | |
701 | memcpy(buf + 4, &def->vendor2, sizeof (def->vendor2)); | |
702 | memcpy(buf + 8, &def->vendor3, sizeof (def->vendor3)); | |
703 | buf[12] = '\0'; | |
704 | (*cpu_fprintf)(f, | |
705 | " family %d model %d stepping %d level %d xlevel 0x%x" | |
706 | " vendor \"%s\"\n", | |
707 | def->family, def->model, def->stepping, def->level, | |
708 | def->xlevel, buf); | |
709 | listflags(buf, sizeof (buf), def->features, feature_name, 0); | |
710 | (*cpu_fprintf)(f, " feature_edx %08x (%s)\n", def->features, | |
711 | buf); | |
712 | listflags(buf, sizeof (buf), def->ext_features, ext_feature_name, | |
713 | 0); | |
714 | (*cpu_fprintf)(f, " feature_ecx %08x (%s)\n", def->ext_features, | |
715 | buf); | |
716 | listflags(buf, sizeof (buf), def->ext2_features, ext2_feature_name, | |
717 | 0); | |
718 | (*cpu_fprintf)(f, " extfeature_edx %08x (%s)\n", | |
719 | def->ext2_features, buf); | |
720 | listflags(buf, sizeof (buf), def->ext3_features, ext3_feature_name, | |
721 | 0); | |
722 | (*cpu_fprintf)(f, " extfeature_ecx %08x (%s)\n", | |
723 | def->ext3_features, buf); | |
724 | (*cpu_fprintf)(f, "\n"); | |
725 | } | |
726 | } | |
727 | } | |
728 | ||
729 | int cpu_x86_register (CPUX86State *env, const char *cpu_model) | |
730 | { | |
731 | x86_def_t def1, *def = &def1; | |
732 | ||
733 | if (cpu_x86_find_by_name(def, cpu_model) < 0) | |
734 | return -1; | |
735 | if (def->vendor1) { | |
736 | env->cpuid_vendor1 = def->vendor1; | |
737 | env->cpuid_vendor2 = def->vendor2; | |
738 | env->cpuid_vendor3 = def->vendor3; | |
739 | } else { | |
740 | env->cpuid_vendor1 = CPUID_VENDOR_INTEL_1; | |
741 | env->cpuid_vendor2 = CPUID_VENDOR_INTEL_2; | |
742 | env->cpuid_vendor3 = CPUID_VENDOR_INTEL_3; | |
743 | } | |
744 | env->cpuid_vendor_override = def->vendor_override; | |
745 | env->cpuid_level = def->level; | |
746 | if (def->family > 0x0f) | |
747 | env->cpuid_version = 0xf00 | ((def->family - 0x0f) << 20); | |
748 | else | |
749 | env->cpuid_version = def->family << 8; | |
750 | env->cpuid_version |= ((def->model & 0xf) << 4) | ((def->model >> 4) << 16); | |
751 | env->cpuid_version |= def->stepping; | |
752 | env->cpuid_features = def->features; | |
753 | env->pat = 0x0007040600070406ULL; | |
754 | env->cpuid_ext_features = def->ext_features; | |
755 | env->cpuid_ext2_features = def->ext2_features; | |
756 | env->cpuid_xlevel = def->xlevel; | |
757 | env->cpuid_kvm_features = def->kvm_features; | |
758 | { | |
759 | const char *model_id = def->model_id; | |
760 | int c, len, i; | |
761 | if (!model_id) | |
762 | model_id = ""; | |
763 | len = strlen(model_id); | |
764 | for(i = 0; i < 48; i++) { | |
765 | if (i >= len) | |
766 | c = '\0'; | |
767 | else | |
768 | c = (uint8_t)model_id[i]; | |
769 | env->cpuid_model[i >> 2] |= c << (8 * (i & 3)); | |
770 | } | |
771 | } | |
772 | return 0; | |
773 | } | |
774 | ||
775 | #if !defined(CONFIG_USER_ONLY) | |
776 | /* copy vendor id string to 32 bit register, nul pad as needed | |
777 | */ | |
778 | static void cpyid(const char *s, uint32_t *id) | |
779 | { | |
780 | char *d = (char *)id; | |
781 | char i; | |
782 | ||
783 | for (i = sizeof (*id); i--; ) | |
784 | *d++ = *s ? *s++ : '\0'; | |
785 | } | |
786 | ||
787 | /* interpret radix and convert from string to arbitrary scalar, | |
788 | * otherwise flag failure | |
789 | */ | |
790 | #define setscalar(pval, str, perr) \ | |
791 | { \ | |
792 | char *pend; \ | |
793 | unsigned long ul; \ | |
794 | \ | |
795 | ul = strtoul(str, &pend, 0); \ | |
796 | *str && !*pend ? (*pval = ul) : (*perr = 1); \ | |
797 | } | |
798 | ||
799 | /* map cpuid options to feature bits, otherwise return failure | |
800 | * (option tags in *str are delimited by whitespace) | |
801 | */ | |
802 | static void setfeatures(uint32_t *pval, const char *str, | |
803 | const char **featureset, int *perr) | |
804 | { | |
805 | const char *p, *q; | |
806 | ||
807 | for (q = p = str; *p || *q; q = p) { | |
808 | while (iswhite(*p)) | |
809 | q = ++p; | |
810 | while (*p && !iswhite(*p)) | |
811 | ++p; | |
812 | if (!*q && !*p) | |
813 | return; | |
814 | if (!lookup_feature(pval, q, p, featureset)) { | |
815 | fprintf(stderr, "error: feature \"%.*s\" not available in set\n", | |
816 | (int)(p - q), q); | |
817 | *perr = 1; | |
818 | return; | |
819 | } | |
820 | } | |
821 | } | |
822 | ||
823 | /* map config file options to x86_def_t form | |
824 | */ | |
825 | static int cpudef_setfield(const char *name, const char *str, void *opaque) | |
826 | { | |
827 | x86_def_t *def = opaque; | |
828 | int err = 0; | |
829 | ||
830 | if (!strcmp(name, "name")) { | |
831 | def->name = strdup(str); | |
832 | } else if (!strcmp(name, "model_id")) { | |
833 | strncpy(def->model_id, str, sizeof (def->model_id)); | |
834 | } else if (!strcmp(name, "level")) { | |
835 | setscalar(&def->level, str, &err) | |
836 | } else if (!strcmp(name, "vendor")) { | |
837 | cpyid(&str[0], &def->vendor1); | |
838 | cpyid(&str[4], &def->vendor2); | |
839 | cpyid(&str[8], &def->vendor3); | |
840 | } else if (!strcmp(name, "family")) { | |
841 | setscalar(&def->family, str, &err) | |
842 | } else if (!strcmp(name, "model")) { | |
843 | setscalar(&def->model, str, &err) | |
844 | } else if (!strcmp(name, "stepping")) { | |
845 | setscalar(&def->stepping, str, &err) | |
846 | } else if (!strcmp(name, "feature_edx")) { | |
847 | setfeatures(&def->features, str, feature_name, &err); | |
848 | } else if (!strcmp(name, "feature_ecx")) { | |
849 | setfeatures(&def->ext_features, str, ext_feature_name, &err); | |
850 | } else if (!strcmp(name, "extfeature_edx")) { | |
851 | setfeatures(&def->ext2_features, str, ext2_feature_name, &err); | |
852 | } else if (!strcmp(name, "extfeature_ecx")) { | |
853 | setfeatures(&def->ext3_features, str, ext3_feature_name, &err); | |
854 | } else if (!strcmp(name, "xlevel")) { | |
855 | setscalar(&def->xlevel, str, &err) | |
856 | } else { | |
857 | fprintf(stderr, "error: unknown option [%s = %s]\n", name, str); | |
858 | return (1); | |
859 | } | |
860 | if (err) { | |
861 | fprintf(stderr, "error: bad option value [%s = %s]\n", name, str); | |
862 | return (1); | |
863 | } | |
864 | return (0); | |
865 | } | |
866 | ||
867 | /* register config file entry as x86_def_t | |
868 | */ | |
869 | static int cpudef_register(QemuOpts *opts, void *opaque) | |
870 | { | |
871 | x86_def_t *def = qemu_mallocz(sizeof (x86_def_t)); | |
872 | ||
873 | qemu_opt_foreach(opts, cpudef_setfield, def, 1); | |
874 | def->next = x86_defs; | |
875 | x86_defs = def; | |
876 | return (0); | |
877 | } | |
878 | #endif /* !CONFIG_USER_ONLY */ | |
879 | ||
880 | /* register "cpudef" models defined in configuration file. Here we first | |
881 | * preload any built-in definitions | |
882 | */ | |
883 | void x86_cpudef_setup(void) | |
884 | { | |
885 | int i; | |
886 | ||
887 | for (i = 0; i < ARRAY_SIZE(builtin_x86_defs); ++i) { | |
888 | builtin_x86_defs[i].next = x86_defs; | |
889 | builtin_x86_defs[i].flags = 1; | |
890 | x86_defs = &builtin_x86_defs[i]; | |
891 | } | |
892 | #if !defined(CONFIG_USER_ONLY) | |
893 | qemu_opts_foreach(&qemu_cpudef_opts, cpudef_register, NULL, 0); | |
894 | #endif | |
895 | } | |
896 | ||
897 | static void host_cpuid(uint32_t function, uint32_t count, | |
898 | uint32_t *eax, uint32_t *ebx, | |
899 | uint32_t *ecx, uint32_t *edx) | |
900 | { | |
901 | #if defined(CONFIG_KVM) | |
902 | uint32_t vec[4]; | |
903 | ||
904 | #ifdef __x86_64__ | |
905 | asm volatile("cpuid" | |
906 | : "=a"(vec[0]), "=b"(vec[1]), | |
907 | "=c"(vec[2]), "=d"(vec[3]) | |
908 | : "0"(function), "c"(count) : "cc"); | |
909 | #else | |
910 | asm volatile("pusha \n\t" | |
911 | "cpuid \n\t" | |
912 | "mov %%eax, 0(%2) \n\t" | |
913 | "mov %%ebx, 4(%2) \n\t" | |
914 | "mov %%ecx, 8(%2) \n\t" | |
915 | "mov %%edx, 12(%2) \n\t" | |
916 | "popa" | |
917 | : : "a"(function), "c"(count), "S"(vec) | |
918 | : "memory", "cc"); | |
919 | #endif | |
920 | ||
921 | if (eax) | |
922 | *eax = vec[0]; | |
923 | if (ebx) | |
924 | *ebx = vec[1]; | |
925 | if (ecx) | |
926 | *ecx = vec[2]; | |
927 | if (edx) | |
928 | *edx = vec[3]; | |
929 | #endif | |
930 | } | |
931 | ||
932 | static void get_cpuid_vendor(CPUX86State *env, uint32_t *ebx, | |
933 | uint32_t *ecx, uint32_t *edx) | |
934 | { | |
935 | *ebx = env->cpuid_vendor1; | |
936 | *edx = env->cpuid_vendor2; | |
937 | *ecx = env->cpuid_vendor3; | |
938 | ||
939 | /* sysenter isn't supported on compatibility mode on AMD, syscall | |
940 | * isn't supported in compatibility mode on Intel. | |
941 | * Normally we advertise the actual cpu vendor, but you can override | |
942 | * this if you want to use KVM's sysenter/syscall emulation | |
943 | * in compatibility mode and when doing cross vendor migration | |
944 | */ | |
945 | if (kvm_enabled() && env->cpuid_vendor_override) { | |
946 | host_cpuid(0, 0, NULL, ebx, ecx, edx); | |
947 | } | |
948 | } | |
949 | ||
950 | void cpu_x86_cpuid(CPUX86State *env, uint32_t index, uint32_t count, | |
951 | uint32_t *eax, uint32_t *ebx, | |
952 | uint32_t *ecx, uint32_t *edx) | |
953 | { | |
954 | /* test if maximum index reached */ | |
955 | if (index & 0x80000000) { | |
956 | if (index > env->cpuid_xlevel) | |
957 | index = env->cpuid_level; | |
958 | } else { | |
959 | if (index > env->cpuid_level) | |
960 | index = env->cpuid_level; | |
961 | } | |
962 | ||
963 | switch(index) { | |
964 | case 0: | |
965 | *eax = env->cpuid_level; | |
966 | get_cpuid_vendor(env, ebx, ecx, edx); | |
967 | break; | |
968 | case 1: | |
969 | *eax = env->cpuid_version; | |
970 | *ebx = (env->cpuid_apic_id << 24) | 8 << 8; /* CLFLUSH size in quad words, Linux wants it. */ | |
971 | *ecx = env->cpuid_ext_features; | |
972 | *edx = env->cpuid_features; | |
973 | if (env->nr_cores * env->nr_threads > 1) { | |
974 | *ebx |= (env->nr_cores * env->nr_threads) << 16; | |
975 | *edx |= 1 << 28; /* HTT bit */ | |
976 | } | |
977 | break; | |
978 | case 2: | |
979 | /* cache info: needed for Pentium Pro compatibility */ | |
980 | *eax = 1; | |
981 | *ebx = 0; | |
982 | *ecx = 0; | |
983 | *edx = 0x2c307d; | |
984 | break; | |
985 | case 4: | |
986 | /* cache info: needed for Core compatibility */ | |
987 | if (env->nr_cores > 1) { | |
988 | *eax = (env->nr_cores - 1) << 26; | |
989 | } else { | |
990 | *eax = 0; | |
991 | } | |
992 | switch (count) { | |
993 | case 0: /* L1 dcache info */ | |
994 | *eax |= 0x0000121; | |
995 | *ebx = 0x1c0003f; | |
996 | *ecx = 0x000003f; | |
997 | *edx = 0x0000001; | |
998 | break; | |
999 | case 1: /* L1 icache info */ | |
1000 | *eax |= 0x0000122; | |
1001 | *ebx = 0x1c0003f; | |
1002 | *ecx = 0x000003f; | |
1003 | *edx = 0x0000001; | |
1004 | break; | |
1005 | case 2: /* L2 cache info */ | |
1006 | *eax |= 0x0000143; | |
1007 | if (env->nr_threads > 1) { | |
1008 | *eax |= (env->nr_threads - 1) << 14; | |
1009 | } | |
1010 | *ebx = 0x3c0003f; | |
1011 | *ecx = 0x0000fff; | |
1012 | *edx = 0x0000001; | |
1013 | break; | |
1014 | default: /* end of info */ | |
1015 | *eax = 0; | |
1016 | *ebx = 0; | |
1017 | *ecx = 0; | |
1018 | *edx = 0; | |
1019 | break; | |
1020 | } | |
1021 | break; | |
1022 | case 5: | |
1023 | /* mwait info: needed for Core compatibility */ | |
1024 | *eax = 0; /* Smallest monitor-line size in bytes */ | |
1025 | *ebx = 0; /* Largest monitor-line size in bytes */ | |
1026 | *ecx = CPUID_MWAIT_EMX | CPUID_MWAIT_IBE; | |
1027 | *edx = 0; | |
1028 | break; | |
1029 | case 6: | |
1030 | /* Thermal and Power Leaf */ | |
1031 | *eax = 0; | |
1032 | *ebx = 0; | |
1033 | *ecx = 0; | |
1034 | *edx = 0; | |
1035 | break; | |
1036 | case 9: | |
1037 | /* Direct Cache Access Information Leaf */ | |
1038 | *eax = 0; /* Bits 0-31 in DCA_CAP MSR */ | |
1039 | *ebx = 0; | |
1040 | *ecx = 0; | |
1041 | *edx = 0; | |
1042 | break; | |
1043 | case 0xA: | |
1044 | /* Architectural Performance Monitoring Leaf */ | |
1045 | *eax = 0; | |
1046 | *ebx = 0; | |
1047 | *ecx = 0; | |
1048 | *edx = 0; | |
1049 | break; | |
1050 | case 0x80000000: | |
1051 | *eax = env->cpuid_xlevel; | |
1052 | *ebx = env->cpuid_vendor1; | |
1053 | *edx = env->cpuid_vendor2; | |
1054 | *ecx = env->cpuid_vendor3; | |
1055 | break; | |
1056 | case 0x80000001: | |
1057 | *eax = env->cpuid_version; | |
1058 | *ebx = 0; | |
1059 | *ecx = env->cpuid_ext3_features; | |
1060 | *edx = env->cpuid_ext2_features; | |
1061 | ||
1062 | /* The Linux kernel checks for the CMPLegacy bit and | |
1063 | * discards multiple thread information if it is set. | |
1064 | * So dont set it here for Intel to make Linux guests happy. | |
1065 | */ | |
1066 | if (env->nr_cores * env->nr_threads > 1) { | |
1067 | uint32_t tebx, tecx, tedx; | |
1068 | get_cpuid_vendor(env, &tebx, &tecx, &tedx); | |
1069 | if (tebx != CPUID_VENDOR_INTEL_1 || | |
1070 | tedx != CPUID_VENDOR_INTEL_2 || | |
1071 | tecx != CPUID_VENDOR_INTEL_3) { | |
1072 | *ecx |= 1 << 1; /* CmpLegacy bit */ | |
1073 | } | |
1074 | } | |
1075 | ||
1076 | if (kvm_enabled()) { | |
1077 | /* Nested SVM not yet supported in upstream QEMU */ | |
1078 | *ecx &= ~CPUID_EXT3_SVM; | |
1079 | } | |
1080 | break; | |
1081 | case 0x80000002: | |
1082 | case 0x80000003: | |
1083 | case 0x80000004: | |
1084 | *eax = env->cpuid_model[(index - 0x80000002) * 4 + 0]; | |
1085 | *ebx = env->cpuid_model[(index - 0x80000002) * 4 + 1]; | |
1086 | *ecx = env->cpuid_model[(index - 0x80000002) * 4 + 2]; | |
1087 | *edx = env->cpuid_model[(index - 0x80000002) * 4 + 3]; | |
1088 | break; | |
1089 | case 0x80000005: | |
1090 | /* cache info (L1 cache) */ | |
1091 | *eax = 0x01ff01ff; | |
1092 | *ebx = 0x01ff01ff; | |
1093 | *ecx = 0x40020140; | |
1094 | *edx = 0x40020140; | |
1095 | break; | |
1096 | case 0x80000006: | |
1097 | /* cache info (L2 cache) */ | |
1098 | *eax = 0; | |
1099 | *ebx = 0x42004200; | |
1100 | *ecx = 0x02008140; | |
1101 | *edx = 0; | |
1102 | break; | |
1103 | case 0x80000008: | |
1104 | /* virtual & phys address size in low 2 bytes. */ | |
1105 | /* XXX: This value must match the one used in the MMU code. */ | |
1106 | if (env->cpuid_ext2_features & CPUID_EXT2_LM) { | |
1107 | /* 64 bit processor */ | |
1108 | /* XXX: The physical address space is limited to 42 bits in exec.c. */ | |
1109 | *eax = 0x00003028; /* 48 bits virtual, 40 bits physical */ | |
1110 | } else { | |
1111 | if (env->cpuid_features & CPUID_PSE36) | |
1112 | *eax = 0x00000024; /* 36 bits physical */ | |
1113 | else | |
1114 | *eax = 0x00000020; /* 32 bits physical */ | |
1115 | } | |
1116 | *ebx = 0; | |
1117 | *ecx = 0; | |
1118 | *edx = 0; | |
1119 | if (env->nr_cores * env->nr_threads > 1) { | |
1120 | *ecx |= (env->nr_cores * env->nr_threads) - 1; | |
1121 | } | |
1122 | break; | |
1123 | case 0x8000000A: | |
1124 | *eax = 0x00000001; /* SVM Revision */ | |
1125 | *ebx = 0x00000010; /* nr of ASIDs */ | |
1126 | *ecx = 0; | |
1127 | *edx = 0; /* optional features */ | |
1128 | break; | |
1129 | default: | |
1130 | /* reserved values: zero */ | |
1131 | *eax = 0; | |
1132 | *ebx = 0; | |
1133 | *ecx = 0; | |
1134 | *edx = 0; | |
1135 | break; | |
1136 | } | |
1137 | } |