Changeset 2291

Timestamp:

Aug 21, 2005, 12:57:05 AM (20 years ago)

Author:

bird

Message:

memcpy_amd test.

Location:

trunk/src/libctests/libc

Files:

• Makefile (modified) (1 diff, 1 prop)
• smoketests/memcpy-amd-1.c (modified) (2 diffs, 1 prop)

trunk/src/libctests/libc/Makefile

@@ -90 +90 @@
         smoketests/fork-exec-1.c \
         smoketests/kill-children-1.c \
-        smoketests/kill-children-2.c
+        smoketests/kill-children-2.c \
+        smoketests/memcpy-amd-1.c
         
 #       smoketests/weak-export-1.c - dll

trunk/src/libctests/libc/smoketests/memcpy-amd-1.c

@@ -28 +28 @@
 #include <string.h>
 #include <stdlib.h>
+#include <stdint.h>
 
 char abSrc[0x40000];
@@ -113 +114 @@
 }
 
+/**
+ * Checks if the current CPU supports CPUID.
+ *
+ * @returns 1 if CPUID is supported, 0 if it doesn't.
+ */
+static inline int HasCpuId(void)
+{
+    int         fRet = 0;
+    uint32_t    u1;
+    uint32_t    u2;
+    __asm__ ("pushf\n\t"
+             "pop   %1\n\t"
+             "mov   %1, %2\n\t"
+             "xorl  $0x200000, %1\n\t"
+             "push  %1\n\t"
+             "popf\n\t"
+             "pushf\n\t"
+             "pop   %1\n\t"
+             "cmpl  %1, %2\n\t"
+             "setne %0\n\t"
+             "push  %2\n\t"
+             "popf\n\t"
+             : "=m" (fRet), "=r" (u1), "=r" (u2));
+    return fRet;
+}
+
+static int IsAmd(void)
+{
+    if (HasCpuId())
+    {
+        uint32_t eax, ebx, ecx, edx;
+        __asm__ __volatile__ ("cpuid" : "=a" (eax), "=d" (edx), "=c" (ecx), "=b" (ebx) : "0" (0));
+        if (edx == 0x69746e65 && ecx == 0x444d4163 && ebx == 0x68747541)
+            return 1;
+    }
+    return 0;
+}
+
 int main()
 {
     size_t i, j;
+    if (!IsAmd())
+    {
+        printf("amd-memcpy-1: skipping, not right amd cpu\n");
+        return 0;
+    }
     init();