Patchwork [17/22] target-i386: replace uint32_t vendor fields by vendor string in x86_def_t

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Submitter Igor Mammedov
Date Sept. 26, 2012, 8:32 p.m.
Message ID <1348691578-17231-18-git-send-email-imammedo@redhat.com>
Download mbox | patch
Permalink /patch/187206/
State New
Headers show

Comments

Igor Mammedov - Sept. 26, 2012, 8:32 p.m.
Vendor property setter takes string as vendor value but cpudefs
use uint32_t vendor[123] fields to define vendor value. It makes it
difficult to unify and use property setter for values from cpudefs.

Simplify code by using vendor property setter, vendor[123] fields
are converted into vendor[13] array to keep its value. And vendor
property setter is used to access/set value on CPU.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
---
[ehabkost: rebase on top of my unduplicate-features branch]
[ehabkost: fix the new CPU models to use the string .vendor field, too,
 on the CPU model array]
[ehabkost: keep CPUID_VENDOR_AMD_[123] #defines, as they are used
 in the AMD CPU feature alias handling]
---
 target-i386/cpu.c |   92 ++++++++++++++---------------------------------------
 target-i386/cpu.h |    6 ++--
 2 files changed, 27 insertions(+), 71 deletions(-)

Patch

diff --git a/target-i386/cpu.c b/target-i386/cpu.c
index 5c7c5a5..b7a9cd6 100644
--- a/target-i386/cpu.c
+++ b/target-i386/cpu.c
@@ -234,7 +234,7 @@  typedef struct x86_def_t {
     struct x86_def_t *next;
     const char *name;
     uint32_t level;
-    uint32_t vendor1, vendor2, vendor3;
+    char vendor[CPUID_VENDOR_SZ + 1];
     int family;
     int model;
     int stepping;
@@ -298,9 +298,7 @@  static x86_def_t builtin_x86_defs[] = {
     {
         .name = "qemu64",
         .level = 4,
-        .vendor1 = CPUID_VENDOR_AMD_1,
-        .vendor2 = CPUID_VENDOR_AMD_2,
-        .vendor3 = CPUID_VENDOR_AMD_3,
+        .vendor = CPUID_VENDOR_AMD,
         .family = 6,
         .model = 2,
         .stepping = 3,
@@ -317,9 +315,7 @@  static x86_def_t builtin_x86_defs[] = {
     {
         .name = "phenom",
         .level = 5,
-        .vendor1 = CPUID_VENDOR_AMD_1,
-        .vendor2 = CPUID_VENDOR_AMD_2,
-        .vendor3 = CPUID_VENDOR_AMD_3,
+        .vendor = CPUID_VENDOR_AMD,
         .family = 16,
         .model = 2,
         .stepping = 3,
@@ -363,9 +359,7 @@  static x86_def_t builtin_x86_defs[] = {
     {
         .name = "kvm64",
         .level = 5,
-        .vendor1 = CPUID_VENDOR_INTEL_1,
-        .vendor2 = CPUID_VENDOR_INTEL_2,
-        .vendor3 = CPUID_VENDOR_INTEL_3,
+        .vendor = CPUID_VENDOR_INTEL,
         .family = 15,
         .model = 6,
         .stepping = 1,
@@ -464,9 +458,7 @@  static x86_def_t builtin_x86_defs[] = {
     {
         .name = "athlon",
         .level = 2,
-        .vendor1 = CPUID_VENDOR_AMD_1,
-        .vendor2 = CPUID_VENDOR_AMD_2,
-        .vendor3 = CPUID_VENDOR_AMD_3,
+        .vendor = CPUID_VENDOR_AMD,
         .family = 6,
         .model = 2,
         .stepping = 3,
@@ -498,9 +490,7 @@  static x86_def_t builtin_x86_defs[] = {
     {
         .name = "Conroe",
         .level = 2,
-        .vendor1 = CPUID_VENDOR_INTEL_1,
-        .vendor2 = CPUID_VENDOR_INTEL_2,
-        .vendor3 = CPUID_VENDOR_INTEL_3,
+        .vendor = CPUID_VENDOR_INTEL,
         .family = 6,
         .model = 2,
         .stepping = 3,
@@ -518,9 +508,7 @@  static x86_def_t builtin_x86_defs[] = {
     {
         .name = "Penryn",
         .level = 2,
-        .vendor1 = CPUID_VENDOR_INTEL_1,
-        .vendor2 = CPUID_VENDOR_INTEL_2,
-        .vendor3 = CPUID_VENDOR_INTEL_3,
+        .vendor = CPUID_VENDOR_INTEL,
         .family = 6,
         .model = 2,
         .stepping = 3,
@@ -539,9 +527,7 @@  static x86_def_t builtin_x86_defs[] = {
     {
         .name = "Nehalem",
         .level = 2,
-        .vendor1 = CPUID_VENDOR_INTEL_1,
-        .vendor2 = CPUID_VENDOR_INTEL_2,
-        .vendor3 = CPUID_VENDOR_INTEL_3,
+        .vendor = CPUID_VENDOR_INTEL,
         .family = 6,
         .model = 2,
         .stepping = 3,
@@ -560,9 +546,7 @@  static x86_def_t builtin_x86_defs[] = {
     {
         .name = "Westmere",
         .level = 11,
-        .vendor1 = CPUID_VENDOR_INTEL_1,
-        .vendor2 = CPUID_VENDOR_INTEL_2,
-        .vendor3 = CPUID_VENDOR_INTEL_3,
+        .vendor = CPUID_VENDOR_INTEL,
         .family = 6,
         .model = 44,
         .stepping = 1,
@@ -582,9 +566,7 @@  static x86_def_t builtin_x86_defs[] = {
     {
         .name = "SandyBridge",
         .level = 0xd,
-        .vendor1 = CPUID_VENDOR_INTEL_1,
-        .vendor2 = CPUID_VENDOR_INTEL_2,
-        .vendor3 = CPUID_VENDOR_INTEL_3,
+        .vendor = CPUID_VENDOR_INTEL,
         .family = 6,
         .model = 42,
         .stepping = 1,
@@ -607,9 +589,7 @@  static x86_def_t builtin_x86_defs[] = {
     {
         .name = "Opteron_G1",
         .level = 5,
-        .vendor1 = CPUID_VENDOR_AMD_1,
-        .vendor2 = CPUID_VENDOR_AMD_2,
-        .vendor3 = CPUID_VENDOR_AMD_3,
+        .vendor = CPUID_VENDOR_AMD,
         .family = 15,
         .model = 6,
         .stepping = 1,
@@ -631,9 +611,7 @@  static x86_def_t builtin_x86_defs[] = {
     {
         .name = "Opteron_G2",
         .level = 5,
-        .vendor1 = CPUID_VENDOR_AMD_1,
-        .vendor2 = CPUID_VENDOR_AMD_2,
-        .vendor3 = CPUID_VENDOR_AMD_3,
+        .vendor = CPUID_VENDOR_AMD,
         .family = 15,
         .model = 6,
         .stepping = 1,
@@ -657,9 +635,7 @@  static x86_def_t builtin_x86_defs[] = {
     {
         .name = "Opteron_G3",
         .level = 5,
-        .vendor1 = CPUID_VENDOR_AMD_1,
-        .vendor2 = CPUID_VENDOR_AMD_2,
-        .vendor3 = CPUID_VENDOR_AMD_3,
+        .vendor = CPUID_VENDOR_AMD,
         .family = 15,
         .model = 6,
         .stepping = 1,
@@ -685,9 +661,7 @@  static x86_def_t builtin_x86_defs[] = {
     {
         .name = "Opteron_G4",
         .level = 0xd,
-        .vendor1 = CPUID_VENDOR_AMD_1,
-        .vendor2 = CPUID_VENDOR_AMD_2,
-        .vendor3 = CPUID_VENDOR_AMD_3,
+        .vendor = CPUID_VENDOR_AMD,
         .family = 21,
         .model = 1,
         .stepping = 2,
@@ -734,13 +708,16 @@  static int cpu_x86_fill_model_id(char *str)
 static int cpu_x86_fill_host(x86_def_t *x86_cpu_def)
 {
     uint32_t eax = 0, ebx = 0, ecx = 0, edx = 0;
+    int i;
 
     x86_cpu_def->name = "host";
     host_cpuid(0x0, 0, &eax, &ebx, &ecx, &edx);
     x86_cpu_def->level = eax;
-    x86_cpu_def->vendor1 = ebx;
-    x86_cpu_def->vendor2 = edx;
-    x86_cpu_def->vendor3 = ecx;
+    for (i = 0; i < 4; i++) {
+        x86_cpu_def->vendor[i] = ebx >> (8 * i);
+        x86_cpu_def->vendor[i + 4] = edx >> (8 * i);
+        x86_cpu_def->vendor[i + 8] = ecx >> (8 * i);
+    }
 
     host_cpuid(0x1, 0, &eax, &ebx, &ecx, &edx);
     x86_cpu_def->family = ((eax >> 8) & 0x0F) + ((eax >> 20) & 0xFF);
@@ -765,9 +742,7 @@  static int cpu_x86_fill_host(x86_def_t *x86_cpu_def)
     x86_cpu_def->vendor_override = 0;
 
     /* Call Centaur's CPUID instruction. */
-    if (x86_cpu_def->vendor1 == CPUID_VENDOR_VIA_1 &&
-        x86_cpu_def->vendor2 == CPUID_VENDOR_VIA_2 &&
-        x86_cpu_def->vendor3 == CPUID_VENDOR_VIA_3) {
+    if (!strcmp(x86_cpu_def->vendor, CPUID_VENDOR_VIA)) {
         host_cpuid(0xC0000000, 0, &eax, &ebx, &ecx, &edx);
         if (eax >= 0xC0000001) {
             /* Support VIA max extended level */
@@ -1335,15 +1310,8 @@  static void cpudef_2_x86_cpu(X86CPU *cpu, x86_def_t *def, Error **errp)
 {
     CPUX86State *env = &cpu->env;
 
-    if (def->vendor1) {
-        env->cpuid_vendor1 = def->vendor1;
-        env->cpuid_vendor2 = def->vendor2;
-        env->cpuid_vendor3 = def->vendor3;
-    } else {
-        env->cpuid_vendor1 = CPUID_VENDOR_INTEL_1;
-        env->cpuid_vendor2 = CPUID_VENDOR_INTEL_2;
-        env->cpuid_vendor3 = CPUID_VENDOR_INTEL_3;
-    }
+    object_property_set_str(OBJECT(cpu), def->vendor[0] ?
+                            def->vendor : CPUID_VENDOR_INTEL, "vendor", errp);
     object_property_set_bool(OBJECT(cpu), true, "vendor-override", errp);
     object_property_set_int(OBJECT(cpu), def->level, "level", errp);
     object_property_set_int(OBJECT(cpu), def->family, "family", errp);
@@ -1377,7 +1345,6 @@  static void cpudef_2_x86_cpu(X86CPU *cpu, x86_def_t *def, Error **errp)
 static int cpu_x86_find_by_name(X86CPU *cpu, x86_def_t *x86_cpu_def,
                                 const char *cpu_model, Error **errp)
 {
-    unsigned int i;
     x86_def_t *def;
 
     char *s = g_strdup(cpu_model);
@@ -1476,18 +1443,7 @@  static int cpu_x86_find_by_name(X86CPU *cpu, x86_def_t *x86_cpu_def,
                 }
                 x86_cpu_def->xlevel = numvalue;
             } else if (!strcmp(featurestr, "vendor")) {
-                if (strlen(val) != 12) {
-                    fprintf(stderr, "vendor string must be 12 chars long\n");
-                    goto error;
-                }
-                x86_cpu_def->vendor1 = 0;
-                x86_cpu_def->vendor2 = 0;
-                x86_cpu_def->vendor3 = 0;
-                for(i = 0; i < 4; i++) {
-                    x86_cpu_def->vendor1 |= ((uint8_t)val[i    ]) << (8 * i);
-                    x86_cpu_def->vendor2 |= ((uint8_t)val[i + 4]) << (8 * i);
-                    x86_cpu_def->vendor3 |= ((uint8_t)val[i + 8]) << (8 * i);
-                }
+                pstrcpy(x86_cpu_def->vendor, sizeof(x86_cpu_def->vendor), val);
                 x86_cpu_def->vendor_override = 1;
             } else if (!strcmp(featurestr, "model_id")) {
                 pstrcpy(x86_cpu_def->model_id, sizeof(x86_cpu_def->model_id),
diff --git a/target-i386/cpu.h b/target-i386/cpu.h
index b6bcdf1..5265c5a 100644
--- a/target-i386/cpu.h
+++ b/target-i386/cpu.h
@@ -479,14 +479,14 @@ 
 #define CPUID_VENDOR_INTEL_1 0x756e6547 /* "Genu" */
 #define CPUID_VENDOR_INTEL_2 0x49656e69 /* "ineI" */
 #define CPUID_VENDOR_INTEL_3 0x6c65746e /* "ntel" */
+#define CPUID_VENDOR_INTEL "GenuineIntel"
 
 #define CPUID_VENDOR_AMD_1   0x68747541 /* "Auth" */
 #define CPUID_VENDOR_AMD_2   0x69746e65 /* "enti" */
 #define CPUID_VENDOR_AMD_3   0x444d4163 /* "cAMD" */
+#define CPUID_VENDOR_AMD   "AuthenticAMD"
 
-#define CPUID_VENDOR_VIA_1   0x746e6543 /* "Cent" */
-#define CPUID_VENDOR_VIA_2   0x48727561 /* "aurH" */
-#define CPUID_VENDOR_VIA_3   0x736c7561 /* "auls" */
+#define CPUID_VENDOR_VIA   "CentaurHauls"
 
 #define CPUID_MWAIT_IBE     (1 << 1) /* Interrupts can exit capability */
 #define CPUID_MWAIT_EMX     (1 << 0) /* enumeration supported */