[newlib-cygwin] fhandler_proc.cc(format_proc_cpuinfo): report Intel SGX bits

[Corinna Vinschen]

https://sourceware.org/git/gitweb.cgi?p=newlib-cygwin.git;h=1dd3f69db55056da2cac64edd227d52f9542483a

commit 1dd3f69db55056da2cac64edd227d52f9542483a
Author: Brian Inglis <Brian.Inglis@SystematicSW.ab.ca>
Date:   Thu Dec 17 00:11:28 2020 -0700

    fhandler_proc.cc(format_proc_cpuinfo): report Intel SGX bits
    
    Update to Linux next 5.10 cpuinfo flags for Intel SDM 36.7.1 Software
    Guard Extensions, and 38.1.4 SGX Launch Control Configuration.
    Launch control restricts what software can run with enclave protections,
    which helps protect the system from bad enclaves.

Diff:
---
 winsup/cygwin/fhandler_proc.cc | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/winsup/cygwin/fhandler_proc.cc b/winsup/cygwin/fhandler_proc.cc
index 13397150f..8e23c0609 100644
--- a/winsup/cygwin/fhandler_proc.cc
+++ b/winsup/cygwin/fhandler_proc.cc
@@ -1414,6 +1414,7 @@ format_proc_cpuinfo (void *, char *&destbuf)
 
 	  ftcprint (features1,  0, "fsgsbase");	    /* rd/wr fs/gs base */
 	  ftcprint (features1,  1, "tsc_adjust");   /* TSC adjustment MSR 0x3B */
+	  ftcprint (features1,  2, "sgx");	    /* software guard extensions */
 	  ftcprint (features1,  3, "bmi1");         /* bit manip ext group 1 */
 	  ftcprint (features1,  4, "hle");          /* hardware lock elision */
 	  ftcprint (features1,  5, "avx2");         /* AVX ext instructions */
@@ -1564,6 +1565,7 @@ format_proc_cpuinfo (void *, char *&destbuf)
 	  ftcprint (features1, 27, "movdiri");          /* movdiri instr */
 	  ftcprint (features1, 28, "movdir64b");        /* movdir64b instr */
 	  ftcprint (features1, 29, "enqcmd");		/* enqcmd/s instructions*/
+	  ftcprint (features1, 30, "sgx_lc");		/* sgx launch control */
         }
 
       /* AMD MCA cpuid 0x80000007 ebx */