Changeset 54260 in vbox

Timestamp:

Feb 18, 2015 7:07:16 AM (10 years ago)

Author:

vboxsync

Message:

iprt/asm-amd64-x86.h: Build fix for linux.x86 VM used to build the validation kit.

File:

• trunk/include/iprt/asm-amd64-x86.h (modified) (1 diff)

trunk/include/iprt/asm-amd64-x86.h

@@ -641 +641 @@
     RTUINT64U u;
 # if RT_INLINE_ASM_GNU_STYLE
-    __asm__ __volatile__("rdtscp\n\t" : "=a" (u.s.Lo), "=d" (u.s.Hi), "=c" (*puAux));
+    /* rdtscp is not supported by ancient linux build VM of course :-( */
+    /*__asm__ __volatile__("rdtscp\n\t" : "=a" (u.s.Lo), "=d" (u.s.Hi), "=c" (*puAux)); */
+    __asm__ __volatile__(".byte 0x0f,0x01,0xf9\n\t" : "=a" (u.s.Lo), "=d" (u.s.Hi), "=c" (*puAux));
 # else
 #  if RT_INLINE_ASM_USES_INTRIN >= 15