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Add ROTATE inline RISC-V zbb/zbkb asm for chacha

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Reviewed-by: Hugo Landau <hlandau@openssl.org>
Reviewed-by: Paul Dale <pauli@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/18289)
This commit is contained in:
Hongren (Zenithal) Zheng 2022-05-11 18:09:46 +08:00 committed by Hugo Landau
parent cdf0a5c460
commit ca6286c382
1 changed files with 22 additions and 0 deletions
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22
crypto/chacha/chacha_enc.c
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@ -24,6 +24,28 @@ typedef union {
# define ROTATE(v, n) (((v) << (n)) | ((v) >> (32 - (n))))
# ifndef PEDANTIC
# if defined(__GNUC__) && __GNUC__>=2 && \
!defined(OPENSSL_NO_ASM) && !defined(OPENSSL_NO_INLINE_ASM)
# if defined(__riscv_zbb) || defined(__riscv_zbkb)
# if __riscv_xlen == 64
# undef ROTATE
# define ROTATE(x, n) ({ u32 ret; \
asm ("roriw %0, %1, %2" \
: "=r"(ret) \
: "r"(x), "i"(32 - (n))); ret;})
# endif
# if __riscv_xlen == 32
# undef ROTATE
# define ROTATE(x, n) ({ u32 ret; \
asm ("rori %0, %1, %2" \
: "=r"(ret) \
: "r"(x), "i"(32 - (n))); ret;})
# endif
# endif
# endif
# endif
# define U32TO8_LITTLE(p, v) do { \
(p)[0] = (u8)(v >> 0); \
(p)[1] = (u8)(v >> 8); \