Changeset 24452 in vbox

Timestamp:

Nov 6, 2009 3:43:24 PM (15 years ago)

Author:

vboxsync

Message:

iprt/asm.h: Added ASMIsAmdCpuEx and ASMIsAmdCpu.

File:

• trunk/include/iprt/asm.h (modified) (2 diffs)

trunk/include/iprt/asm.h

@@ -980 +980 @@
 DECLINLINE(bool) ASMIsIntelCpuEx(uint32_t uEBX, uint32_t uECX, uint32_t uEDX)
 {
-    return uEBX == 0x756e6547
-        && uECX == 0x6c65746e
-        && uEDX == 0x49656e69;
+    return uEBX == UINT32_C(0x756e6547)
+        && uECX == UINT32_C(0x6c65746e)
+        && uEDX == UINT32_C(0x49656e69);
 }
 
@@ -997 +997 @@
     ASMCpuId(0, &uEAX, &uEBX, &uECX, &uEDX);
     return ASMIsIntelCpuEx(uEBX, uECX, uEDX);
+}
+
+
+/**
+ * Tests if it a authentic AMD CPU based on the ASMCpuId(0) output.
+ *
+ * @returns true/false.
+ * @param   uEBX    EBX return from ASMCpuId(0)
+ * @param   uECX    ECX return from ASMCpuId(0)
+ * @param   uEDX    EDX return from ASMCpuId(0)
+ */
+DECLINLINE(bool) ASMIsAmdCpuEx(uint32_t uEBX, uint32_t uECX, uint32_t uEDX)
+{
+    return uEBX == UINT32_C(0x68747541)
+        && uECX == UINT32_C(0x444d4163)
+        && uEDX == UINT32_C(0x69746e65);
+}
+
+
+/**
+ * Tests if this is an authentic AMD CPU.
+ *
+ * @returns true/false.
+ * @remarks ASSUMES that cpuid is supported by the CPU.
+ */
+DECLINLINE(bool) ASMIsAmdCpu(void)
+{
+    uint32_t uEAX, uEBX, uECX, uEDX;
+    ASMCpuId(0, &uEAX, &uEBX, &uECX, &uEDX);
+    return ASMIsAmdCpuEx(uEBX, uECX, uEDX);
 }