From 55e06745a639d86921e48ff56aa0c375a46d6421 Mon Sep 17 00:00:00 2001
From: M Joonas Pihlaja <jpihlaja@cc.helsinki.fi>
Date: Thu, 25 Sep 2008 00:17:57 +0300
Subject: [PATCH] [perf-suite] Explicitly read the results of rdtsc from
 edx:eax.

The =A format used to read a 64 bit result from rdtsc works on x86,
but not on x86-64.
---
 perf/cairo-perf-posix.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/perf/cairo-perf-posix.c b/perf/cairo-perf-posix.c
index 8bf78cec5..8bc4e092b 100644
--- a/perf/cairo-perf-posix.c
+++ b/perf/cairo-perf-posix.c
@@ -70,9 +70,9 @@
 static inline cairo_perf_ticks_t
 oil_profile_stamp_rdtsc (void)
 {
-    uint64_t ts;
-    __asm__ __volatile__("rdtsc\n" : "=A" (ts));
-    return ts;
+    unsigned a, d; 
+    __asm__ __volatile__("rdtsc" : "=a" (a), "=d" (d)); 
+    return ((uint64_t)a) | (((uint64_t)d) << 32); 
 }
 #define OIL_STAMP oil_profile_stamp_rdtsc
 #endif