Add a new interface, OPENSSL_cpu_caps(), to return the currently running

cpu's specific hardware capabilities users of libcrypto might be interested
in, as an integer value. This deprecates the existing OPENSSL_ia32cap()
macro and the OPENSSL_ia32cap_loc() function (which returns the pointer so
that you can mess with stuff you shouldn't mess with).

Interpreting the value returned by OPENSSL_cpu_caps() is, of course,
machine-dependent.

Minor version bump for libcrypto.
ok beck@ jsing@

1 files changed, 13 insertions, 1 deletions

diff --git a/src/lib/libcrypto/cryptlib.c b/src/lib/libcrypto/cryptlib.c
index 896e3d39cf..fff59f2dfd 100644
--- a/src/lib/libcrypto/cryptlib.c
+++ b/src/lib/libcrypto/cryptlib.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: cryptlib.c,v 1.35 2015/06/27 22:42:02 doug Exp $ */
+/* $OpenBSD: cryptlib.c,v 1.36 2015/09/13 10:02:49 miod Exp $ */
 /* ====================================================================
  * Copyright (c) 1998-2006 The OpenSSL Project.  All rights reserved.
  *
@@ -641,6 +641,12 @@ OPENSSL_ia32cap_loc(void)
         return (unsigned long *)OPENSSL_ia32cap_P;
 }
 
+uint64_t
+OPENSSL_cpu_caps(void)
+{
+        return *(uint64_t *)OPENSSL_ia32cap_P;
+}
+
 #if defined(OPENSSL_CPUID_OBJ) && !defined(OPENSSL_NO_ASM) && !defined(I386_ONLY)
 #define OPENSSL_CPUID_SETUP
 typedef unsigned long long IA32CAP;
@@ -673,6 +679,12 @@ OPENSSL_ia32cap_loc(void)
 {
         return NULL;
 }
+
+uint64_t
+OPENSSL_cpu_caps(void)
+{
+        return 0;
+}
 #endif
 
 #if !defined(OPENSSL_CPUID_SETUP) && !defined(OPENSSL_CPUID_OBJ)