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360f6dcc5a
RISC-V cpuid implementation allows bitmanip extensions Zb[abcs] to be enabled at runtime using OPENSSL_riscvcap environment variable. For example, to specify 64-bit RISC-V with the G,C,Zba,Zbb,Zbc extensions, one could write: OPENSSL_riscvcap="rv64gc_zba_zbb_zbc" Architecture string parsing is still very primitive, but can be expanded in the future. Currently, only bitmanip extensions Zba, Zbb, Zbc and Zbs are supported. Includes implementation of constant-time CRYPTO_memcmp in riscv64 asm, as well as OPENSSL_cleanse. Assembly implementations are written using perlasm. Reviewed-by: Philipp Tomsich <philipp.tomsich@vrull.eu> Signed-off-by: Henry Brausen <henry.brausen@vrull.eu> Reviewed-by: Tomas Mraz <tomas@openssl.org> Reviewed-by: Paul Dale <pauli@openssl.org> (Merged from https://github.com/openssl/openssl/pull/17640)
60 lines
1.7 KiB
C
60 lines
1.7 KiB
C
/*
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* Copyright 2022 The OpenSSL Project Authors. All Rights Reserved.
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*
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* Licensed under the Apache License 2.0 (the "License"). You may not use
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* this file except in compliance with the License. You can obtain a copy
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* in the file LICENSE in the source distribution or at
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* https://www.openssl.org/source/license.html
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*/
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#ifndef OSSL_CRYPTO_RISCV_ARCH_H
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# define OSSL_CRYPTO_RISCV_ARCH_H
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# include <ctype.h>
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# include <stdint.h>
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# define RISCV_DEFINE_CAP(NAME, INDEX, BIT_INDEX) +1
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extern uint32_t OPENSSL_riscvcap_P[ ((
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# include "riscv_arch.def"
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) + sizeof(uint32_t) - 1) / sizeof(uint32_t) ];
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# ifdef OPENSSL_RISCVCAP_IMPL
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# define RISCV_DEFINE_CAP(NAME, INDEX, BIT_INDEX) +1
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uint32_t OPENSSL_riscvcap_P[ ((
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# include "riscv_arch.def"
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) + sizeof(uint32_t) - 1) / sizeof(uint32_t) ];
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# endif
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# define RISCV_DEFINE_CAP(NAME, INDEX, BIT_INDEX) \
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static inline int RISCV_HAS_##NAME(void) \
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{ \
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return (OPENSSL_riscvcap_P[INDEX] & (1 << BIT_INDEX)) != 0; \
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}
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# include "riscv_arch.def"
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struct RISCV_capability_s {
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const char *name;
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size_t index;
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size_t bit_offset;
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};
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# define RISCV_DEFINE_CAP(NAME, INDEX, BIT_INDEX) +1
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extern const struct RISCV_capability_s RISCV_capabilities[
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# include "riscv_arch.def"
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];
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# ifdef OPENSSL_RISCVCAP_IMPL
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# define RISCV_DEFINE_CAP(NAME, INDEX, BIT_INDEX) \
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{ #NAME, INDEX, BIT_INDEX },
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const struct RISCV_capability_s RISCV_capabilities[] = {
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# include "riscv_arch.def"
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};
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# endif
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# define RISCV_DEFINE_CAP(NAME, INDEX, BIT_INDEX) +1
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static const size_t kRISCVNumCaps =
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# include "riscv_arch.def"
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;
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#endif
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