cpuid: better parser for processor info

[ccan] / ccan / cpuid / cpuid.c

diff --git a/ccan/cpuid/cpuid.c b/ccan/cpuid/cpuid.c
index 57883e2bd0982b17fccdeaf34fd5da945c1134ea..bc44fcf2f9d7c264071cbc3cf67cf2e31022670c 100644 (file)
--- a/ccan/cpuid/cpuid.c
+++ b/ccan/cpuid/cpuid.c
@@ -29,6 +29,7 @@
 #include "cpuid.h"
 
 #include <string.h>
+#include <stdio.h>
 
 enum {
        CPU_PROC_BRAND_STRING_INTERNAL0                 = 0x80000003,
@@ -309,10 +310,15 @@ void cpuid(cpuid_t info, uint32_t *buf)
                        buf[2] = ecx;
                        break;
                case CPU_PROCINFO_AND_FEATUREBITS:
-                       buf[0] = eax;   /* The so called "signature" of the CPU.  */
-                       buf[1] = edx;   /* Feature flags #1.  */
-                       buf[2] = ecx;   /* Feature flags #2.  */
-                       buf[3] = ebx;   /* Additional feature information.  */
+                       buf[0] = (eax & 0x0F);          /* Stepping  */
+                       buf[1] = (eax >> 4)  & 0x0F;    /* Model  */
+                       buf[2] = (eax >> 8)  & 0x0F;    /* Family  */
+                       buf[3] = (eax >> 16) & 0x0F;    /* Extended Model.  */
+                       buf[4] = (eax >> 24) & 0x0F;    /* Extended Family.  */
+
+                       buf[5] = edx;                   /* Feature flags #1.  */
+                       buf[6] = ecx;                   /* Feature flags #2.  */
+                       buf[7] = ebx;                   /* Additional feature information.  */
                        break;
                case CPU_CACHE_AND_TLBD_INFO:
                        buf[0] = eax;