Disable libcrypto assembly on arm.

The arm CPU capability detection is uses SIGILL and is unsafe to call from
some contexts. Furthermore, this is only useful to detect NEON support,
which is then unused on OpenBSD due to __STRICT_ALIGNMENT. Requiring a
minimum of ARMv7+VFP+NEON is also not unreasonable.

The SHA-1, SHA-256 and SHA-512 (non-NEON) C code performs within ~5% of
the assembly, as does RSA when using the C based Montgomery multiplication.
The C versions of AES and GHASH code are around ~40-50% of the assembly,
howeer if you care about performance you really want to use
Chacha20Poly1305 on this platform.

This will enable further clean up to proceed.

ok joshua@ kinjiro@ tb@

1 files changed, 0 insertions, 59 deletions

diff --git a/src/lib/libcrypto/arch/arm/arm_arch.h b/src/lib/libcrypto/arch/arm/arm_arch.h
deleted file mode 100644
index 5ac3b935f1..0000000000
--- a/src/lib/libcrypto/arch/arm/arm_arch.h
+++ /dev/null
@@ -1,59 +0,0 @@
-/* $OpenBSD: arm_arch.h,v 1.1 2022/03/23 15:13:31 tb Exp $ */
-#ifndef __ARM_ARCH_H__
-#define __ARM_ARCH_H__
-
-#if !defined(__ARM_ARCH__)
-# if defined(__CC_ARM)
-#  define __ARM_ARCH__ __TARGET_ARCH_ARM
-#  if defined(__BIG_ENDIAN)
-#   define __ARMEB__
-#  else
-#   define __ARMEL__
-#  endif
-# elif defined(__GNUC__)
-  /*
-   * Why doesn't gcc define __ARM_ARCH__? Instead it defines
-   * bunch of below macros. See all_architectures[] table in
-   * gcc/config/arm/arm.c. On a side note it defines
-   * __ARMEL__/__ARMEB__ for little-/big-endian.
-   */
-#  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
-#  elif defined(__ARM_ARCH_6__) || defined(__ARM_ARCH_6J__)     || \
-        defined(__ARM_ARCH_6K__)|| defined(__ARM_ARCH_6M__)     || \
-        defined(__ARM_ARCH_6Z__)|| defined(__ARM_ARCH_6ZK__)    || \
-        defined(__ARM_ARCH_6T2__)
-#   define __ARM_ARCH__ 6
-#  elif defined(__ARM_ARCH_5__) || defined(__ARM_ARCH_5T__)     || \
-        defined(__ARM_ARCH_5E__)|| defined(__ARM_ARCH_5TE__)    || \
-        defined(__ARM_ARCH_5TEJ__)
-#   define __ARM_ARCH__ 5
-#  elif defined(__ARM_ARCH_4__) || defined(__ARM_ARCH_4T__)
-#   define __ARM_ARCH__ 4
-#  else
-#   error "unsupported ARM architecture"
-#  endif
-# endif
-#endif
-
-#if !defined(__ASSEMBLER__)
-extern unsigned int OPENSSL_armcap_P;
-
-#define ARMV7_NEON      (1<<0)
-#define ARMV8_AES       (1<<1)
-#define ARMV8_SHA1      (1<<2)
-#define ARMV8_SHA256    (1<<3)
-#define ARMV8_PMULL     (1<<4)
-#endif
-
-#if defined(__OpenBSD__)
-#define __STRICT_ALIGNMENT
-#endif
-
-#endif