mirror of
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178 lines
6.6 KiB
C
178 lines
6.6 KiB
C
/* ====================================================================
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* Copyright (c) 1998-2011 The OpenSSL Project. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* 3. All advertising materials mentioning features or use of this
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* software must display the following acknowledgment:
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* "This product includes software developed by the OpenSSL Project
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* for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
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*
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* 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
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* endorse or promote products derived from this software without
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* prior written permission. For written permission, please contact
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* openssl-core@openssl.org.
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*
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* 5. Products derived from this software may not be called "OpenSSL"
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* nor may "OpenSSL" appear in their names without prior written
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* permission of the OpenSSL Project.
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*
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* 6. Redistributions of any form whatsoever must retain the following
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* acknowledgment:
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* "This product includes software developed by the OpenSSL Project
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* for use in the OpenSSL Toolkit (http://www.openssl.org/)"
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*
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* THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
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* EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
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* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
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* OF THE POSSIBILITY OF SUCH DAMAGE.
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* ====================================================================
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*
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* This product includes cryptographic software written by Eric Young
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* (eay@cryptsoft.com). This product includes software written by Tim
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* Hudson (tjh@cryptsoft.com). */
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#ifndef OPENSSL_HEADER_ARM_ARCH_H
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#define OPENSSL_HEADER_ARM_ARCH_H
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#if !defined(__ARM_ARCH__)
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# if defined(__CC_ARM)
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# define __ARM_ARCH__ __TARGET_ARCH_ARM
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# if defined(__BIG_ENDIAN)
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# define __ARMEB__
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# else
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# define __ARMEL__
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# endif
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# elif defined(__GNUC__)
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# if defined(__aarch64__)
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# define __ARM_ARCH__ 8
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# if __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
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# define __ARMEB__
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# else
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# define __ARMEL__
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# endif
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// Why doesn't gcc define __ARM_ARCH__? Instead it defines
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// bunch of below macros. See all_architectires[] table in
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// gcc/config/arm/arm.c. On a side note it defines
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// __ARMEL__/__ARMEB__ for little-/big-endian.
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# elif defined(__ARM_ARCH)
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# define __ARM_ARCH__ __ARM_ARCH
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# elif defined(__ARM_ARCH_8A__)
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# define __ARM_ARCH__ 8
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# elif defined(__ARM_ARCH_7__) || defined(__ARM_ARCH_7A__) || \
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defined(__ARM_ARCH_7R__)|| defined(__ARM_ARCH_7M__) || \
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defined(__ARM_ARCH_7EM__)
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# define __ARM_ARCH__ 7
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# elif defined(__ARM_ARCH_6__) || defined(__ARM_ARCH_6J__) || \
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defined(__ARM_ARCH_6K__)|| defined(__ARM_ARCH_6M__) || \
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defined(__ARM_ARCH_6Z__)|| defined(__ARM_ARCH_6ZK__) || \
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defined(__ARM_ARCH_6T2__)
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# define __ARM_ARCH__ 6
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# elif defined(__ARM_ARCH_5__) || defined(__ARM_ARCH_5T__) || \
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defined(__ARM_ARCH_5E__)|| defined(__ARM_ARCH_5TE__) || \
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defined(__ARM_ARCH_5TEJ__)
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# define __ARM_ARCH__ 5
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# elif defined(__ARM_ARCH_4__) || defined(__ARM_ARCH_4T__)
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# define __ARM_ARCH__ 4
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# else
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# error "unsupported ARM architecture"
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# endif
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# endif
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#endif
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// Even when building for 32-bit ARM, support for aarch64 crypto instructions
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// will be included.
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#if !defined(__ARM_MAX_ARCH__)
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#define __ARM_MAX_ARCH__ 8
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#endif
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// ARMV7_NEON is true when a NEON unit is present in the current CPU.
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#define ARMV7_NEON (1 << 0)
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// ARMV8_SHA256 indicates support for hardware SHA-256 instructions.
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#define ARMV8_SHA256 (1 << 4)
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#if defined(__ASSEMBLER__)
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#if defined(__GNUC__)
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#pragma GCC diagnostic push
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#pragma GCC diagnostic ignored "-Wundef"
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#endif
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// Support macros for
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// - Armv8.3-A Pointer Authentication and
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// - Armv8.5-A Branch Target Identification
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// features which require emitting a .note.gnu.property section with the
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// appropriate architecture-dependent feature bits set.
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// Read more: "ELF for the Arm® 64-bit Architecture"
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#if defined(__ARM_FEATURE_BTI_DEFAULT) && __ARM_FEATURE_BTI_DEFAULT == 1
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#define GNU_PROPERTY_AARCH64_BTI (1 << 0) // Has Branch Target Identification
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#define AARCH64_VALID_CALL_TARGET hint #34 // BTI 'c'
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#else
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#define GNU_PROPERTY_AARCH64_BTI 0 // No Branch Target Identification
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#define AARCH64_VALID_CALL_TARGET
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#endif
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#if defined(__ARM_FEATURE_PAC_DEFAULT) && \
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(__ARM_FEATURE_PAC_DEFAULT & 1) == 1 // Signed with A-key
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#define GNU_PROPERTY_AARCH64_POINTER_AUTH \
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(1 << 1) // Has Pointer Authentication
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#define AARCH64_SIGN_LINK_REGISTER hint #25 // PACIASP
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#define AARCH64_VALIDATE_LINK_REGISTER hint #29 // AUTIASP
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#elif defined(__ARM_FEATURE_PAC_DEFAULT) && \
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(__ARM_FEATURE_PAC_DEFAULT & 2) == 2 // Signed with B-key
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#define GNU_PROPERTY_AARCH64_POINTER_AUTH \
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(1 << 1) // Has Pointer Authentication
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#define AARCH64_SIGN_LINK_REGISTER hint #27 // PACIBSP
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#define AARCH64_VALIDATE_LINK_REGISTER hint #31 // AUTIBSP
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#else
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#define GNU_PROPERTY_AARCH64_POINTER_AUTH 0 // No Pointer Authentication
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#if GNU_PROPERTY_AARCH64_BTI != 0
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#define AARCH64_SIGN_LINK_REGISTER AARCH64_VALID_CALL_TARGET
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#else
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#define AARCH64_SIGN_LINK_REGISTER
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#endif
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#define AARCH64_VALIDATE_LINK_REGISTER
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#endif
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#if GNU_PROPERTY_AARCH64_POINTER_AUTH != 0 || GNU_PROPERTY_AARCH64_BTI != 0
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.pushsection .note.gnu.property, "a";
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.balign 8;
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.long 4;
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.long 0x10;
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.long 0x5;
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.asciz "GNU";
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.long 0xc0000000; /* GNU_PROPERTY_AARCH64_FEATURE_1_AND */
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.long 4;
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.long (GNU_PROPERTY_AARCH64_POINTER_AUTH | GNU_PROPERTY_AARCH64_BTI);
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.long 0;
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.popsection;
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#endif
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#if defined(__GNUC__)
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#pragma GCC diagnostic pop
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#endif
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#endif /* defined __ASSEMBLER__ */
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#endif // OPENSSL_HEADER_ARM_ARCH_H
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