From: Amos Jeffries <amosjeffries@squid-cache.org>
Date: Sat, 19 Apr 2008 02:04:38 +0000 (-0600)
Subject: Author: Henrik Nordstrom <henrik@henriknordstrom.net>
X-Git-Tag: SQUID_3_0_STABLE5~15
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=a2cda4ac4c08142e5fc4839ac059dba70d701ccd;p=thirdparty%2Fsquid.git

Author: Henrik Nordstrom <henrik@henriknordstrom.net>
Add x86_64 support to XPROF_STATS
---

diff --git a/include/profiling.h b/include/profiling.h
index f8311a3b8c..f47074edc8 100644
--- a/include/profiling.h
+++ b/include/profiling.h
@@ -30,6 +30,17 @@ asm volatile ("rdtsc":"=A" (regs));
     /* Note that "rdtsc" is relatively slow OP and stalls the CPU pipes, so use it wisely */
 }
 
+#elif defined(__x86_64) || defined(__x86_64__)
+static inline hrtime_t
+get_tick(void)
+{
+    uint32_t lo, hi;
+    // Based on an example in Wikipedia
+    /* We cannot use "=A", since this would use %rax on x86_64 */
+    asm volatile ("rdtsc" : "=a" (lo), "=d" (hi));
+    return (hrtime_t)hi << 32 | lo;
+}
+
 #elif defined(__alpha)
 static inline hrtime_t
 get_tick(void)