[newlib-cygwin] Add support for Hygon Dhyana processor

[newlib-cygwin] Add support for Hygon Dhyana processor

[Corinna Vinschen]

https://sourceware.org/git/gitweb.cgi?p=newlib-cygwin.git;h=ee7e49e19388fd0f19ca1c4773d3efc5fa123d58

commit ee7e49e19388fd0f19ca1c4773d3efc5fa123d58
Author: Jinke Fan <fanjinke@hygon.cn>
Date:   Fri May 17 11:29:11 2019 +0800

    Add support for Hygon Dhyana processor
    
    -Add vendor identification
    -Support in get_cpu_cache
    
    Background:
        Chengdu Haiguang IC Design Co., Ltd (Hygon) is a Joint Venture
        between AMD and Haiguang Information Technology Co.,Ltd., aims at
        providing high performance x86 processor for China server market.
        Its first generation processor codename is Dhyana, which
        originates from AMD technology and shares most of the
        architecture with AMD's family 17h, but with different CPU Vendor
        ID("HygonGenuine")/Family series number(Family 18h).
    
    Related Hygon kernel patch can be found on:
    http://lkml.kernel.org/r/5ce86123a7b9dad925ac583d88d2f921040e859b.1538583282.git.puwen@hygon.cn
    
    Signed-off-by: Jinke Fan <fanjinke@hygon.cn>

Diff:
---
 winsup/cygwin/fhandler_proc.cc | 3 ++-
 winsup/cygwin/sysconf.cc       | 3 ++-
 2 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/winsup/cygwin/fhandler_proc.cc b/winsup/cygwin/fhandler_proc.cc
index a6a0b68..c461bbc 100644
--- a/winsup/cygwin/fhandler_proc.cc
+++ b/winsup/cygwin/fhandler_proc.cc
@@ -706,7 +706,8 @@ format_proc_cpuinfo (void *, char *&destbuf)
 
       /* Vendor identification. */
       bool is_amd = false, is_intel = false;
-      if (!strcmp ((char*)vendor_id, "AuthenticAMD"))
+      if (!strcmp ((char*)vendor_id, "AuthenticAMD")
+          || !strcmp((char*)vendor_id, "HygonGenuine"))
 	is_amd = true;
       else if (!strcmp ((char*)vendor_id, "GenuineIntel"))
 	is_intel = true;
diff --git a/winsup/cygwin/sysconf.cc b/winsup/cygwin/sysconf.cc
index 216e514..3440c09 100644
--- a/winsup/cygwin/sysconf.cc
+++ b/winsup/cygwin/sysconf.cc
@@ -486,7 +486,8 @@ get_cpu_cache (int in)
   vendor_id[3] = 0;
   if (!strcmp ((char*) vendor_id, "GenuineIntel"))
     return get_cpu_cache_intel (in, maxf & 0xffff);
-  else if (!strcmp ((char*)vendor_id, "AuthenticAMD"))
+  else if (!strcmp ((char*)vendor_id, "AuthenticAMD")
+           || !strcmp((char*)vendor_id, "HygonGenuine"))
     {
       uint32_t maxe = 0, unused;
       cpuid (&maxe, &unused, &unused, &unused, 0x80000000);