From c1a2478b4bbdf42a15666eaaeb96c7ab382118ee Mon Sep 17 00:00:00 2001 From: lkcl Date: Fri, 25 Dec 2020 22:16:29 +0000 Subject: [PATCH] --- openpower/sv/bitmanip.mdwn | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/openpower/sv/bitmanip.mdwn b/openpower/sv/bitmanip.mdwn index ef0dc7eab..7ae445816 100644 --- a/openpower/sv/bitmanip.mdwn +++ b/openpower/sv/bitmanip.mdwn @@ -22,6 +22,8 @@ other way round # single bit set +based on RV bitmanip + ``` uint_xlen_t sbset(uint_xlen_t rs1, uint_xlen_t rs2) { int shamt = rs2 & (XLEN - 1); } @@ -39,6 +41,7 @@ return 1 & (rs1 >> shamt); # shuffle / unshuffle +based on RV bitmanip ``` uint64_t shuffle64_stage(uint64_t src, uint64_t maskL, uint64_t maskR, int N) { uint64_t x = src & ~(maskL | maskR); } @@ -67,6 +70,7 @@ return x; # xperm +based on RV bitmanip ``` uint_xlen_t xperm(uint_xlen_t rs1, uint_xlen_t rs2, int sz_log2) { uint_xlen_t r = 0; } @@ -77,6 +81,7 @@ uint_xlen_t xperm_n (uint_xlen_t rs1, uint_xlen_t rs2) { return xperm(rs1, rs2, # gorc +based on RV bitmanip ``` uint32_t gorc32(uint32_t rs1, uint32_t rs2) { uint32_t x = rs1; } @@ -97,6 +102,8 @@ return x; # cmix +based on RV bitmanip + ``` uint_xlen_t cmix(uint_xlen_t rs1, uint_xlen_t rs2, uint_xlen_t rs3) { return (rs1 & rs2) | (rs3 & ~rs2); } -- 2.30.2