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RISC-V support for the SHA256

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Reviewed-by: Paul Dale <pauli@openssl.org>
Reviewed-by: Tomas Mraz <tomas@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/16710)
This commit is contained in:
Mark Fedorov 2021-09-29 20:49:59 +03:00 committed by Tomas Mraz
parent 34901b0c39
commit 657d1927c6
1 changed files with 52 additions and 7 deletions
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59
crypto/sha/sha256.c
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@ -129,18 +129,63 @@ static const SHA_LONG K256[64] = {
0x90befffaUL, 0xa4506cebUL, 0xbef9a3f7UL, 0xc67178f2UL
};
# ifndef PEDANTIC
# if defined(__GNUC__) && __GNUC__>=2 && \
!defined(OPENSSL_NO_ASM) && !defined(OPENSSL_NO_INLINE_ASM)
# if __riscv_zknh
# define Sigma0(x) ({ MD32_REG_T ret; \
asm ("sha256sum0 %0, %1" \
: "=r"(ret) \
: "r"(x)); ret; })
# define Sigma1(x) ({ MD32_REG_T ret; \
asm ("sha256sum1 %0, %1" \
: "=r"(ret) \
: "r"(x)); ret; })
# define sigma0(x) ({ MD32_REG_T ret; \
asm ("sha256sig0 %0, %1" \
: "=r"(ret) \
: "r"(x)); ret; })
# define sigma1(x) ({ MD32_REG_T ret; \
asm ("sha256sig1 %0, %1" \
: "=r"(ret) \
: "r"(x)); ret; })
# endif
# if __riscv_zbt || __riscv_zpn
# define Ch(x,y,z) ({ MD32_REG_T ret; \
asm (".insn r4 0x33, 1, 0x3, %0, %2, %1, %3"\
: "=r"(ret) \
: "r"(x), "r"(y), "r"(z)); ret; })
# define Maj(x,y,z) ({ MD32_REG_T ret; \
asm (".insn r4 0x33, 1, 0x3, %0, %2, %1, %3"\
: "=r"(ret) \
: "r"(x^z), "r"(y), "r"(x)); ret; })
# endif
# endif
# endif
/*
* FIPS specification refers to right rotations, while our ROTATE macro
* is left one. This is why you might notice that rotation coefficients
* differ from those observed in FIPS document by 32-N...
*/
# define Sigma0(x) (ROTATE((x),30) ^ ROTATE((x),19) ^ ROTATE((x),10))
# define Sigma1(x) (ROTATE((x),26) ^ ROTATE((x),21) ^ ROTATE((x),7))
# define sigma0(x) (ROTATE((x),25) ^ ROTATE((x),14) ^ ((x)>>3))
# define sigma1(x) (ROTATE((x),15) ^ ROTATE((x),13) ^ ((x)>>10))
# define Ch(x,y,z) (((x) & (y)) ^ ((~(x)) & (z)))
# define Maj(x,y,z) (((x) & (y)) ^ ((x) & (z)) ^ ((y) & (z)))
# ifndef Sigma0
# define Sigma0(x) (ROTATE((x),30) ^ ROTATE((x),19) ^ ROTATE((x),10))
# endif
# ifndef Sigma1
# define Sigma1(x) (ROTATE((x),26) ^ ROTATE((x),21) ^ ROTATE((x),7))
# endif
# ifndef sigma0
# define sigma0(x) (ROTATE((x),25) ^ ROTATE((x),14) ^ ((x)>>3))
# endif
# ifndef sigma1
# define sigma1(x) (ROTATE((x),15) ^ ROTATE((x),13) ^ ((x)>>10))
# endif
# ifndef Ch
# define Ch(x,y,z) (((x) & (y)) ^ ((~(x)) & (z)))
# endif
# ifndef Maj
# define Maj(x,y,z) (((x) & (y)) ^ ((x) & (z)) ^ ((y) & (z)))
# endif
# ifdef OPENSSL_SMALL_FOOTPRINT