//#define DEBUG_MMU
-#ifdef USE_CODE_COPY
-#include <asm/ldt.h>
-#include <linux/unistd.h>
-#include <linux/version.h>
+static int cpu_x86_register (CPUX86State *env, const char *cpu_model);
-int modify_ldt(int func, void *ptr, unsigned long bytecount)
+static void add_flagname_to_bitmaps(char *flagname, uint32_t *features,
+ uint32_t *ext_features,
+ uint32_t *ext2_features,
+ uint32_t *ext3_features)
{
- return syscall(__NR_modify_ldt, func, ptr, bytecount);
+ int i;
+ /* feature flags taken from "Intel Processor Identification and the CPUID
+ * Instruction" and AMD's "CPUID Specification". In cases of disagreement
+ * about feature names, the Linux name is used. */
+ const char *feature_name[] = {
+ "fpu", "vme", "de", "pse", "tsc", "msr", "pae", "mce",
+ "cx8", "apic", NULL, "sep", "mtrr", "pge", "mca", "cmov",
+ "pat", "pse36", "pn" /* Intel psn */, "clflush" /* Intel clfsh */, NULL, "ds" /* Intel dts */, "acpi", "mmx",
+ "fxsr", "sse", "sse2", "ss", "ht" /* Intel htt */, "tm", "ia64", "pbe",
+ };
+ const char *ext_feature_name[] = {
+ "pni" /* Intel,AMD sse3 */, NULL, NULL, "monitor", "ds_cpl", "vmx", NULL /* Linux smx */, "est",
+ "tm2", "ssse3", "cid", NULL, NULL, "cx16", "xtpr", NULL,
+ NULL, NULL, "dca", NULL, NULL, NULL, NULL, "popcnt",
+ NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
+ };
+ const char *ext2_feature_name[] = {
+ "fpu", "vme", "de", "pse", "tsc", "msr", "pae", "mce",
+ "cx8" /* AMD CMPXCHG8B */, "apic", NULL, "syscall", "mttr", "pge", "mca", "cmov",
+ "pat", "pse36", NULL, NULL /* Linux mp */, "nx" /* Intel xd */, NULL, "mmxext", "mmx",
+ "fxsr", "fxsr_opt" /* AMD ffxsr */, "pdpe1gb" /* AMD Page1GB */, "rdtscp", NULL, "lm" /* Intel 64 */, "3dnowext", "3dnow",
+ };
+ const char *ext3_feature_name[] = {
+ "lahf_lm" /* AMD LahfSahf */, "cmp_legacy", "svm", "extapic" /* AMD ExtApicSpace */, "cr8legacy" /* AMD AltMovCr8 */, "abm", "sse4a", "misalignsse",
+ "3dnowprefetch", "osvw", NULL /* Linux ibs */, NULL, "skinit", "wdt", NULL, NULL,
+ NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
+ NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
+ };
+
+ for ( i = 0 ; i < 32 ; i++ )
+ if (feature_name[i] && !strcmp (flagname, feature_name[i])) {
+ *features |= 1 << i;
+ return;
+ }
+ for ( i = 0 ; i < 32 ; i++ )
+ if (ext_feature_name[i] && !strcmp (flagname, ext_feature_name[i])) {
+ *ext_features |= 1 << i;
+ return;
+ }
+ for ( i = 0 ; i < 32 ; i++ )
+ if (ext2_feature_name[i] && !strcmp (flagname, ext2_feature_name[i])) {
+ *ext2_features |= 1 << i;
+ return;
+ }
+ for ( i = 0 ; i < 32 ; i++ )
+ if (ext3_feature_name[i] && !strcmp (flagname, ext3_feature_name[i])) {
+ *ext3_features |= 1 << i;
+ return;
+ }
+ fprintf(stderr, "CPU feature %s not found\n", flagname);
}
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 5, 66)
-#define modify_ldt_ldt_s user_desc
-#endif
-#endif /* USE_CODE_COPY */
-
-CPUX86State *cpu_x86_init(void)
+CPUX86State *cpu_x86_init(const char *cpu_model)
{
CPUX86State *env;
static int inited;
if (!env)
return NULL;
cpu_exec_init(env);
+ env->cpu_model_str = cpu_model;
/* init various static tables */
if (!inited) {
inited = 1;
optimize_flags_init();
}
-#ifdef USE_CODE_COPY
- /* testing code for code copy case */
- {
- struct modify_ldt_ldt_s ldt;
-
- ldt.entry_number = 1;
- ldt.base_addr = (unsigned long)env;
- ldt.limit = (sizeof(CPUState) + 0xfff) >> 12;
- ldt.seg_32bit = 1;
- ldt.contents = MODIFY_LDT_CONTENTS_DATA;
- ldt.read_exec_only = 0;
- ldt.limit_in_pages = 1;
- ldt.seg_not_present = 0;
- ldt.useable = 1;
- modify_ldt(1, &ldt, sizeof(ldt)); /* write ldt entry */
-
- asm volatile ("movl %0, %%fs" : : "r" ((1 << 3) | 7));
+ if (cpu_x86_register(env, cpu_model) < 0) {
+ cpu_x86_close(env);
+ return NULL;
}
+ cpu_reset(env);
+#ifdef USE_KQEMU
+ kqemu_init(env);
#endif
- {
- int family, model, stepping;
+ return env;
+}
+
+typedef struct x86_def_t {
+ const char *name;
+ uint32_t level;
+ uint32_t vendor1, vendor2, vendor3;
+ int family;
+ int model;
+ int stepping;
+ uint32_t features, ext_features, ext2_features, ext3_features;
+ uint32_t xlevel;
+} x86_def_t;
+
+#define PPRO_FEATURES (CPUID_FP87 | CPUID_DE | CPUID_PSE | CPUID_TSC | \
+ CPUID_MSR | CPUID_MCE | CPUID_CX8 | CPUID_PGE | CPUID_CMOV | \
+ CPUID_PAT | CPUID_FXSR | CPUID_MMX | CPUID_SSE | CPUID_SSE2 | \
+ CPUID_PAE | CPUID_SEP | CPUID_APIC)
+static x86_def_t x86_defs[] = {
#ifdef TARGET_X86_64
- env->cpuid_vendor1 = 0x68747541; /* "Auth" */
- env->cpuid_vendor2 = 0x69746e65; /* "enti" */
- env->cpuid_vendor3 = 0x444d4163; /* "cAMD" */
- family = 6;
- model = 2;
- stepping = 3;
-#else
- env->cpuid_vendor1 = 0x756e6547; /* "Genu" */
- env->cpuid_vendor2 = 0x49656e69; /* "ineI" */
- env->cpuid_vendor3 = 0x6c65746e; /* "ntel" */
-#if 0
- /* pentium 75-200 */
- family = 5;
- model = 2;
- stepping = 11;
-#else
- /* pentium pro */
- family = 6;
- model = 3;
- stepping = 3;
-#endif
+ {
+ .name = "qemu64",
+ .level = 2,
+ .vendor1 = 0x68747541, /* "Auth" */
+ .vendor2 = 0x69746e65, /* "enti" */
+ .vendor3 = 0x444d4163, /* "cAMD" */
+ .family = 6,
+ .model = 2,
+ .stepping = 3,
+ .features = PPRO_FEATURES |
+ /* these features are needed for Win64 and aren't fully implemented */
+ CPUID_MTRR | CPUID_CLFLUSH | CPUID_MCA |
+ /* this feature is needed for Solaris and isn't fully implemented */
+ CPUID_PSE36,
+ .ext_features = CPUID_EXT_SSE3,
+ .ext2_features = (PPRO_FEATURES & 0x0183F3FF) |
+ CPUID_EXT2_LM | CPUID_EXT2_SYSCALL | CPUID_EXT2_NX,
+ .ext3_features = CPUID_EXT3_SVM,
+ .xlevel = 0x8000000A,
+ },
#endif
- env->cpuid_level = 2;
- env->cpuid_version = (family << 8) | (model << 4) | stepping;
- env->cpuid_features = (CPUID_FP87 | CPUID_DE | CPUID_PSE |
- CPUID_TSC | CPUID_MSR | CPUID_MCE |
- CPUID_CX8 | CPUID_PGE | CPUID_CMOV |
- CPUID_PAT);
- env->pat = 0x0007040600070406ULL;
- env->cpuid_ext3_features = CPUID_EXT3_SVM;
- env->cpuid_ext_features = CPUID_EXT_SSE3;
- env->cpuid_features |= CPUID_FXSR | CPUID_MMX | CPUID_SSE | CPUID_SSE2 | CPUID_PAE | CPUID_SEP;
- env->cpuid_features |= CPUID_APIC;
- env->cpuid_xlevel = 0x8000000e;
- {
- const char *model_id = "QEMU Virtual CPU version " QEMU_VERSION;
- int c, len, i;
- len = strlen(model_id);
- for(i = 0; i < 48; i++) {
- if (i >= len)
- c = '\0';
- else
- c = model_id[i];
- env->cpuid_model[i >> 2] |= c << (8 * (i & 3));
+ {
+ .name = "qemu32",
+ .level = 2,
+ .family = 6,
+ .model = 3,
+ .stepping = 3,
+ .features = PPRO_FEATURES,
+ .ext_features = CPUID_EXT_SSE3,
+ .xlevel = 0,
+ },
+ {
+ .name = "486",
+ .level = 0,
+ .family = 4,
+ .model = 0,
+ .stepping = 0,
+ .features = 0x0000000B,
+ .xlevel = 0,
+ },
+ {
+ .name = "pentium",
+ .level = 1,
+ .family = 5,
+ .model = 4,
+ .stepping = 3,
+ .features = 0x008001BF,
+ .xlevel = 0,
+ },
+ {
+ .name = "pentium2",
+ .level = 2,
+ .family = 6,
+ .model = 5,
+ .stepping = 2,
+ .features = 0x0183F9FF,
+ .xlevel = 0,
+ },
+ {
+ .name = "pentium3",
+ .level = 2,
+ .family = 6,
+ .model = 7,
+ .stepping = 3,
+ .features = 0x0383F9FF,
+ .xlevel = 0,
+ },
+};
+
+static int cpu_x86_find_by_name(x86_def_t *x86_cpu_def, const char *cpu_model)
+{
+ unsigned int i;
+ x86_def_t *def;
+
+ char *s = strdup(cpu_model);
+ char *featurestr, *name = strtok(s, ",");
+ uint32_t plus_features = 0, plus_ext_features = 0, plus_ext2_features = 0, plus_ext3_features = 0;
+ uint32_t minus_features = 0, minus_ext_features = 0, minus_ext2_features = 0, minus_ext3_features = 0;
+ int family = -1, model = -1, stepping = -1;
+
+ def = NULL;
+ for (i = 0; i < sizeof(x86_defs) / sizeof(x86_def_t); i++) {
+ if (strcmp(name, x86_defs[i].name) == 0) {
+ def = &x86_defs[i];
+ break;
+ }
+ }
+ if (!def)
+ goto error;
+ memcpy(x86_cpu_def, def, sizeof(*def));
+
+ featurestr = strtok(NULL, ",");
+
+ while (featurestr) {
+ char *val;
+ if (featurestr[0] == '+') {
+ add_flagname_to_bitmaps(featurestr + 1, &plus_features, &plus_ext_features, &plus_ext2_features, &plus_ext3_features);
+ } else if (featurestr[0] == '-') {
+ add_flagname_to_bitmaps(featurestr + 1, &minus_features, &minus_ext_features, &minus_ext2_features, &minus_ext3_features);
+ } else if ((val = strchr(featurestr, '='))) {
+ *val = 0; val++;
+ if (!strcmp(featurestr, "family")) {
+ char *err;
+ family = strtol(val, &err, 10);
+ if (!*val || *err || family < 0) {
+ fprintf(stderr, "bad numerical value %s\n", val);
+ x86_cpu_def = 0;
+ goto error;
+ }
+ x86_cpu_def->family = family;
+ } else if (!strcmp(featurestr, "model")) {
+ char *err;
+ model = strtol(val, &err, 10);
+ if (!*val || *err || model < 0 || model > 0xf) {
+ fprintf(stderr, "bad numerical value %s\n", val);
+ x86_cpu_def = 0;
+ goto error;
+ }
+ x86_cpu_def->model = model;
+ } else if (!strcmp(featurestr, "stepping")) {
+ char *err;
+ stepping = strtol(val, &err, 10);
+ if (!*val || *err || stepping < 0 || stepping > 0xf) {
+ fprintf(stderr, "bad numerical value %s\n", val);
+ x86_cpu_def = 0;
+ goto error;
+ }
+ x86_cpu_def->stepping = stepping;
+ } else {
+ fprintf(stderr, "unrecognized feature %s\n", featurestr);
+ x86_cpu_def = 0;
+ goto error;
}
+ } else {
+ fprintf(stderr, "feature string `%s' not in format (+feature|-feature|feature=xyz)\n", featurestr);
+ x86_cpu_def = 0;
+ goto error;
}
-#ifdef TARGET_X86_64
- /* currently not enabled for std i386 because not fully tested */
- env->cpuid_ext2_features = (env->cpuid_features & 0x0183F3FF);
- env->cpuid_ext2_features |= CPUID_EXT2_LM | CPUID_EXT2_SYSCALL | CPUID_EXT2_NX;
+ featurestr = strtok(NULL, ",");
+ }
+ x86_cpu_def->features |= plus_features;
+ x86_cpu_def->ext_features |= plus_ext_features;
+ x86_cpu_def->ext2_features |= plus_ext2_features;
+ x86_cpu_def->ext3_features |= plus_ext3_features;
+ x86_cpu_def->features &= ~minus_features;
+ x86_cpu_def->ext_features &= ~minus_ext_features;
+ x86_cpu_def->ext2_features &= ~minus_ext2_features;
+ x86_cpu_def->ext3_features &= ~minus_ext3_features;
+ free(s);
+ return 0;
+
+error:
+ free(s);
+ return -1;
+}
- /* these features are needed for Win64 and aren't fully implemented */
- env->cpuid_features |= CPUID_MTRR | CPUID_CLFLUSH | CPUID_MCA;
- /* this feature is needed for Solaris and isn't fully implemented */
- env->cpuid_features |= CPUID_PSE36;
-#endif
+void x86_cpu_list (FILE *f, int (*cpu_fprintf)(FILE *f, const char *fmt, ...))
+{
+ unsigned int i;
+
+ for (i = 0; i < sizeof(x86_defs) / sizeof(x86_def_t); i++)
+ (*cpu_fprintf)(f, "x86 %16s\n", x86_defs[i].name);
+}
+
+static int cpu_x86_register (CPUX86State *env, const char *cpu_model)
+{
+ x86_def_t def1, *def = &def1;
+
+ if (cpu_x86_find_by_name(def, cpu_model) < 0)
+ return -1;
+ if (def->vendor1) {
+ env->cpuid_vendor1 = def->vendor1;
+ env->cpuid_vendor2 = def->vendor2;
+ env->cpuid_vendor3 = def->vendor3;
+ } else {
+ env->cpuid_vendor1 = 0x756e6547; /* "Genu" */
+ env->cpuid_vendor2 = 0x49656e69; /* "ineI" */
+ env->cpuid_vendor3 = 0x6c65746e; /* "ntel" */
}
- cpu_reset(env);
-#ifdef USE_KQEMU
- kqemu_init(env);
-#endif
- return env;
+ env->cpuid_level = def->level;
+ env->cpuid_version = (def->family << 8) | (def->model << 4) | def->stepping;
+ env->cpuid_features = def->features;
+ env->pat = 0x0007040600070406ULL;
+ env->cpuid_ext_features = def->ext_features;
+ env->cpuid_ext2_features = def->ext2_features;
+ env->cpuid_xlevel = def->xlevel;
+ env->cpuid_ext3_features = def->ext3_features;
+ {
+ const char *model_id = "QEMU Virtual CPU version " QEMU_VERSION;
+ int c, len, i;
+ len = strlen(model_id);
+ for(i = 0; i < 48; i++) {
+ if (i >= len)
+ c = '\0';
+ else
+ c = model_id[i];
+ env->cpuid_model[i >> 2] |= c << (8 * (i & 3));
+ }
+ }
+ return 0;
}
/* NOTE: must be called outside the CPU execute loop */
cpu_x86_load_seg_cache(env, R_GS, 0, 0, 0xffff, 0);
env->eip = 0xfff0;
- env->regs[R_EDX] = 0x600; /* indicate P6 processor */
+ env->regs[R_EDX] = env->cpuid_version;
env->eflags = 0x2;
return paddr;
}
#endif /* !CONFIG_USER_ONLY */
-
-#if defined(USE_CODE_COPY)
-struct fpstate {
- uint16_t fpuc;
- uint16_t dummy1;
- uint16_t fpus;
- uint16_t dummy2;
- uint16_t fptag;
- uint16_t dummy3;
-
- uint32_t fpip;
- uint32_t fpcs;
- uint32_t fpoo;
- uint32_t fpos;
- uint8_t fpregs1[8 * 10];
-};
-
-void restore_native_fp_state(CPUState *env)
-{
- int fptag, i, j;
- struct fpstate fp1, *fp = &fp1;
-
- fp->fpuc = env->fpuc;
- fp->fpus = (env->fpus & ~0x3800) | (env->fpstt & 0x7) << 11;
- fptag = 0;
- for (i=7; i>=0; i--) {
- fptag <<= 2;
- if (env->fptags[i]) {
- fptag |= 3;
- } else {
- /* the FPU automatically computes it */
- }
- }
- fp->fptag = fptag;
- j = env->fpstt;
- for(i = 0;i < 8; i++) {
- memcpy(&fp->fpregs1[i * 10], &env->fpregs[j].d, 10);
- j = (j + 1) & 7;
- }
- asm volatile ("frstor %0" : "=m" (*fp));
- env->native_fp_regs = 1;
-}
-
-void save_native_fp_state(CPUState *env)
-{
- int fptag, i, j;
- uint16_t fpuc;
- struct fpstate fp1, *fp = &fp1;
-
- asm volatile ("fsave %0" : : "m" (*fp));
- env->fpuc = fp->fpuc;
- env->fpstt = (fp->fpus >> 11) & 7;
- env->fpus = fp->fpus & ~0x3800;
- fptag = fp->fptag;
- for(i = 0;i < 8; i++) {
- env->fptags[i] = ((fptag & 3) == 3);
- fptag >>= 2;
- }
- j = env->fpstt;
- for(i = 0;i < 8; i++) {
- memcpy(&env->fpregs[j].d, &fp->fpregs1[i * 10], 10);
- j = (j + 1) & 7;
- }
- /* we must restore the default rounding state */
- /* XXX: we do not restore the exception state */
- fpuc = 0x037f | (env->fpuc & (3 << 10));
- asm volatile("fldcw %0" : : "m" (fpuc));
- env->native_fp_regs = 0;
-}
-#endif
projects / qemu.git / blobdiff