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diff src/os_cpu/solaris_x86/vm/solaris_x86_64.il @ 4749:7ab5f6318694

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7125934: Add a fast unordered timestamp capability to Hotspot on x86/x64 Summary: Add rdtsc detection and inline generation. Reviewed-by: kamg, dholmes Contributed-by: karen.kinnear@oracle.com
author phh
date Sun, 01 Jan 2012 11:17:59 -0500
parents 0a8e0d4345b3
children da4be62fb889
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line diff
--- a/src/os_cpu/solaris_x86/vm/solaris_x86_64.il	Mon Dec 26 20:36:01 2011 -0500
+++ b/src/os_cpu/solaris_x86/vm/solaris_x86_64.il	Sun Jan 01 11:17:59 2012 -0500
@@ -30,12 +30,19 @@
       movq     %fs:0, %rax 
       .end
 
-  // Get the frame pointer from current frame.
+  // Get current fp
       .inline _get_current_fp,0
       .volatile
       movq     %rbp, %rax 
       .end
 
+  // Support for os::rdtsc()
+      .inline _raw_rdtsc,0
+      rdtsc
+      salq     $32, %rdx
+      orq      %rdx, %rax
+      .end
+
   // Support for jint Atomic::add(jint add_value, volatile jint* dest)
       .inline _Atomic_add,2
       movl     %edi, %eax      // save add_value for return