Add ROTATE inline RISC-V zbb/zbkb asm for chacha
@@ -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); \
