Fixed #32 a SEGFAULT bug with gcc-4.6. According to i386 calling convention, The called funtion should remove the hidden return value address from the stack.

Changelog.txt

@@ -21,6 +21,7 @@ common:
 
 x86/x86_64:
 	* Fixed #28 a wrong result of dsdot on x86_64.
+	* Fixed #32 a SEGFAULT bug of zdotc with gcc-4.6.
 
 MIPS64:
 	* Fixed #28 a wrong result of dsdot on Loongson3A/MIPS64. 

kernel/x86/zdot_sse2.S

@@ -1541,5 +1541,8 @@
 	popl	%ebx
 	popl	%esi
 	popl	%edi
+/*remove the hidden return value address from the stack.*/
+	popl	%ecx
+	xchgl	%ecx, 0(%esp)
 	ret
 	EPILOGUE