Add cpuid support for arm64 so that we can recognize which

hardware crypto features are available.

"no objections" kettenis@

3 files changed, 57 insertions, 3 deletions

diff --git a/src/lib/libcrypto/arch/aarch64/Makefile.inc b/src/lib/libcrypto/arch/aarch64/Makefile.inc
index 8742504f2d..d3d33e5941 100644
--- a/src/lib/libcrypto/arch/aarch64/Makefile.inc
+++ b/src/lib/libcrypto/arch/aarch64/Makefile.inc
@@ -1,4 +1,4 @@
-# $OpenBSD: Makefile.inc,v 1.1 2017/01/11 18:11:01 patrick Exp $
+# $OpenBSD: Makefile.inc,v 1.2 2019/07/02 19:31:28 patrick Exp $
 
 # aarch64-specific libcrypto build rules
 
@@ -26,3 +26,6 @@ ${f}.S: ${LCRYPTO_SRC}/${dir}/asm/${f}.pl
         /usr/bin/perl \
                 ${LCRYPTO_SRC}/${dir}/asm/${f}.pl void ${.TARGET} > ${.TARGET}
 .endfor
+
+CFLAGS+= -DOPENSSL_CPUID_OBJ
+SRCS+=  arm64cpuid.S armcap.c
diff --git a/src/lib/libcrypto/arm64cpuid.S b/src/lib/libcrypto/arm64cpuid.S
new file mode 100644
index 0000000000..5eeff91c6e
--- /dev/null
+++ b/src/lib/libcrypto/arm64cpuid.S
@@ -0,0 +1,47 @@
+#include "arm_arch.h"
+
+.text
+.arch   armv8-a+crypto+sha3
+
+.align  5
+.globl  _armv7_neon_probe
+.type   _armv7_neon_probe,%function
+_armv7_neon_probe:
+        orr     v15.16b, v15.16b, v15.16b
+        ret
+.size   _armv7_neon_probe,.-_armv7_neon_probe
+
+.globl  _armv8_aes_probe
+.type   _armv8_aes_probe,%function
+_armv8_aes_probe:
+        aese    v0.16b, v0.16b
+        ret
+.size   _armv8_aes_probe,.-_armv8_aes_probe
+
+.globl  _armv8_sha1_probe
+.type   _armv8_sha1_probe,%function
+_armv8_sha1_probe:
+        sha1h   s0, s0
+        ret
+.size   _armv8_sha1_probe,.-_armv8_sha1_probe
+
+.globl  _armv8_sha256_probe
+.type   _armv8_sha256_probe,%function
+_armv8_sha256_probe:
+        sha256su0       v0.4s, v0.4s
+        ret
+.size   _armv8_sha256_probe,.-_armv8_sha256_probe
+
+.globl  _armv8_pmull_probe
+.type   _armv8_pmull_probe,%function
+_armv8_pmull_probe:
+        pmull   v0.1q, v0.1d, v0.1d
+        ret
+.size   _armv8_pmull_probe,.-_armv8_pmull_probe
+
+.globl  _armv8_sha512_probe
+.type   _armv8_sha512_probe,%function
+_armv8_sha512_probe:
+        sha512su0       v0.2d,v0.2d
+        ret
+.size   _armv8_sha512_probe,.-_armv8_sha512_probe
diff --git a/src/lib/libcrypto/arm_arch.h b/src/lib/libcrypto/arm_arch.h
index a64c6da46e..8c5115ea44 100644
--- a/src/lib/libcrypto/arm_arch.h
+++ b/src/lib/libcrypto/arm_arch.h
@@ -1,4 +1,4 @@
-/* $OpenBSD: arm_arch.h,v 1.9 2019/03/13 10:18:30 patrick Exp $ */
+/* $OpenBSD: arm_arch.h,v 1.10 2019/07/02 19:31:28 patrick Exp $ */
 #ifndef __ARM_ARCH_H__
 #define __ARM_ARCH_H__
 
@@ -17,7 +17,11 @@
    * gcc/config/arm/arm.c. On a side note it defines
    * __ARMEL__/__ARMEB__ for little-/big-endian.
    */
-#  if   defined(__ARM_ARCH_7__) || defined(__ARM_ARCH_7A__)     || \
+#  if   defined(__ARM_ARCH)
+#   define __ARM_ARCH__ __ARM_ARCH
+#  elif defined(__ARM_ARCH_8A__)
+#   define __ARM_ARCH__ 8
+#  elif defined(__ARM_ARCH_7__) || defined(__ARM_ARCH_7A__)     || \
         defined(__ARM_ARCH_7R__)|| defined(__ARM_ARCH_7M__)     || \
         defined(__ARM_ARCH_7EM__)
 #   define __ARM_ARCH__ 7