buf[3] = edx;
break;
case CPU_EXTENDED_L2_CACHE_FEATURES:
- *buf = ecx;
+ buf[0] = ecx & 0xFF; /* Line size. */
+ buf[1] = (ecx >> 12) & 0xFF; /* Associativity. */
+ buf[2] = ecx >> 16; /* Cache size. */
break;
case CPU_ADV_POWER_MGT_INFO:
*buf = edx;
break;
case CPU_VIRT_PHYS_ADDR_SIZES:
- *buf = eax;
+ buf[0] = eax & 0xFF; /* physical. */
+ buf[1] = (eax >> 8) & 0xFF; /* virtual. */
break;
default:
*buf = 0xbaadf00d;
* For CPU_EXTENDED_PROC_INFO_FEATURE_BITS:
* Returns them in buf[0] and buf[1].
*
+ * For CPU_EXTENDED_L2_CACHE_FEATURES:
+ * buf[0]: Line size
+ * buf[1]: Associativity
+ * buf[2]: Cache size.
+ *
* For CPU_VIRT_PHYS_ADDR_SIZES:
- * Returns it as an integer in *buf.
+ * buf[0]: Physical
+ * buf[1]: Virtual
*
* For CPU_PROC_BRAND_STRING:
* Have a char array with at least 48 bytes assigned to it.
printf ("Highest extended function supported: %#010x\n", cpuid_highest_ext_func_supported());
- union {
- struct {
- uint32_t phys_bits : 8;
- uint32_t virt_bits : 8;
- uint32_t reserved : 16;
- };
- uint32_t w;
- } s;
- cpuid(CPU_VIRT_PHYS_ADDR_SIZES, &s.w);
- printf ("Physical address size: %d\nVirtual address size: %d\n", s.phys_bits, s.virt_bits);
+ uint32_t phys_virt[2];
+ cpuid(CPU_VIRT_PHYS_ADDR_SIZES, phys_virt);
+ printf ("Physical address size: %d\nVirtual address size: %d\n", phys_virt[0], phys_virt[1]);
uint32_t extfeatures[2];
cpuid(CPU_EXTENDED_PROC_INFO_FEATURE_BITS, extfeatures);
printf ("Extended processor info and feature bits: %d %d\n", extfeatures[0], extfeatures[1]);
- union {
- struct {
- uint32_t line_size : 8;
- uint32_t reserved : 4;
- uint32_t assoc : 4;
- uint32_t cache_size : 16;
- };
-
- uint32_t w;
- } l2c;
-
- cpuid(CPU_EXTENDED_L2_CACHE_FEATURES, &l2c.w);
- printf ("L2 Cache Size: %u KB\tLine Size: %u bytes\tAssociativity: %02xh\n",
- l2c.cache_size, l2c.line_size, l2c.assoc);
+ uint32_t l2c[3];
+ cpuid(CPU_EXTENDED_L2_CACHE_FEATURES, l2c);
+ printf("L2 Line size: %u bytes\tAssociativity: %02xh\tCache Size: %u KB\n",
+ l2c[0], l2c[1], l2c[2]);
uint32_t invalid;
cpuid(0x0ffffffUL, &invalid);
printf ("Testing invalid: %#010x\n", invalid);
return 0;
}
-