https://sourceware.org/git/gitweb.cgi?p=newlib-cygwin.git;h=8f502bd33159cfe0f138a31442998a77602c8a9a
commit 8f502bd33159cfe0f138a31442998a77602c8a9a
Author: Brian Inglis <brian.ing...@systematicsw.ab.ca>
Date: Thu Jan 23 02:06:27 2020 -0700
fhandler_proc.cc:format_proc_cpuinfo add rdpru flag
rdpru flag is cpuid xfn 80000008 ebx bit 4 added in linux 5.5;
see AMD64 Architecture Programmer's Manual Volume 3:
General-Purpose and System Instructions
https://www.amd.com/system/files/TechDocs/24594.pdf#page=329
and elsewhere in that document
Diff:
---
winsup/cygwin/fhandler_proc.cc | 1 +
1 file changed, 1 insertion(+)
diff --git a/winsup/cygwin/fhandler_proc.cc b/winsup/cygwin/fhandler_proc.cc
index 8c331f5..78a6970 100644
--- a/winsup/cygwin/fhandler_proc.cc
+++ b/winsup/cygwin/fhandler_proc.cc
@@ -1255,6 +1255,7 @@ format_proc_cpuinfo (void *, char *&destbuf)
ftcprint (features1, 0, "clzero"); /* clzero instruction */
ftcprint (features1, 1, "irperf"); /* instr retired count */
ftcprint (features1, 2, "xsaveerptr"); /* save/rest FP err ptrs */
+ ftcprint (features1, 4, "rdpru"); /* user level rd proc reg */
/* ftcprint (features1, 6, "mba"); */ /* memory BW alloc */
ftcprint (features1, 9, "wbnoinvd"); /* wbnoinvd instruction */
/* ftcprint (features1, 12, "ibpb" ); */ /* ind br pred barrier */
