a905bbb52a
Trying to migrate Chromium to the "link all the asm files together" strategy broke the aarch64 Android build because some of the ifdef'd out assembly files were missing the .note.gnu.property section for BTI. If we add support for IBT, that'll be another one. To fix this, introduce <openssl/asm_base.h>, which must be included at the start of every assembly file (before the target ifdefs). This does a couple things: - It emits BTI and noexecstack markers into every assembly file, even those that ifdef themselves out. - It resolves the MSan -> OPENSSL_NO_ASM logic, so we only need to do it once. - It defines the same OPENSSL_X86_64, etc., defines we set elsewhere, so we can ensure they're consistent. This required carving files up a bit. <openssl/base.h> has a lot of things, such that trying to guard everything in it on __ASSEMBLER__ would be tedious. Instead, I moved the target defines to a new <openssl/target.h>. Then <openssl/asm_base.h> is the new header that pulls in all those things. Bug: 542 Change-Id: I1682b4d929adea72908655fa1bb15765a6b3473b Reviewed-on: https://boringssl-review.googlesource.com/c/boringssl/+/60765 Reviewed-by: Bob Beck <bbe@google.com> Commit-Queue: David Benjamin <davidben@google.com>
106 lines
4.2 KiB
C
106 lines
4.2 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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#include <openssl/target.h>
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// arm_arch.h contains symbols used by ARM assembly, and the C code that calls
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// it. It is included as a public header to simplify the build, but is not
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// intended for external use.
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#if defined(OPENSSL_ARM) || defined(OPENSSL_AARCH64)
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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_AES indicates support for hardware AES instructions.
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#define ARMV8_AES (1 << 2)
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// ARMV8_SHA1 indicates support for hardware SHA-1 instructions.
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#define ARMV8_SHA1 (1 << 3)
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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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// ARMV8_PMULL indicates support for carryless multiplication.
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#define ARMV8_PMULL (1 << 5)
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// ARMV8_SHA512 indicates support for hardware SHA-512 instructions.
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#define ARMV8_SHA512 (1 << 6)
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#if defined(__ASSEMBLER__)
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// We require the ARM assembler provide |__ARM_ARCH| from Arm C Language
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// Extensions (ACLE). This is supported in GCC 4.8+ and Clang 3.2+. MSVC does
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// not implement ACLE, but we require Clang's assembler on Windows.
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#if !defined(__ARM_ARCH)
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#error "ARM assembler must define __ARM_ARCH"
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#endif
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// __ARM_ARCH__ is used by OpenSSL assembly to determine the minimum target ARM
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// version.
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//
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// TODO(davidben): Switch the assembly to use |__ARM_ARCH| directly.
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#define __ARM_ARCH__ __ARM_ARCH
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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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#define __ARM_MAX_ARCH__ 8
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#endif // __ASSEMBLER__
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#endif // ARM || AARCH64
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#endif // OPENSSL_HEADER_ARM_ARCH_H
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