From: Luke Kenneth Casson Leighton Date: Thu, 27 Apr 2023 23:42:14 +0000 (+0100) Subject: add SVSHAPE setup for parallel/prefix but it refuses to work X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=b2d23ca2d3b5209db694227134f27e39cae4978c;p=openpower-isa.git add SVSHAPE setup for parallel/prefix but it refuses to work correctly right now because SVyd is utterly borked. needs investigating --- diff --git a/openpower/isa/simplev.mdwn b/openpower/isa/simplev.mdwn index c350b3cf..fae79b4c 100644 --- a/openpower/isa/simplev.mdwn +++ b/openpower/isa/simplev.mdwn @@ -298,11 +298,18 @@ Pseudo-code: SVSHAPE0[0:5] <- (0b0 || SVxd) # xdim SVSHAPE0[12:17] <- (0b0 || SVzd) # zdim - "striding" (2D DCT) mscale <- (0b0 || SVzd) + 1 - SVSHAPE0[30:31] <- 0b10 # parallel reduce submode + SVSHAPE0[30:31] <- 0b10 # parallel reduce/prefix submode # copy SVSHAPE1[0:31] <- SVSHAPE0[0:31] - # set up right operand (left operand 28:29 is zero) - SVSHAPE1[28:29] <- 0b01 # right operand + # set up submodes: parallel or prefix + if (SVyd = 1) then + SVSHAPE0[28:29] <- 0b00 # left operand + SVSHAPE1[28:29] <- 0b01 # right operand + if (SVyd = 2) then + SVSHAPE0[28:29] <- 0b10 # left operand + SVSHAPE1[28:29] <- 0b11 # right operand + SVSHAPE0[28:29] <- 0b00 # left operand + SVSHAPE1[28:29] <- 0b01 # right operand # set VL, MVL and Vertical-First m[0:12] <- vlen * mscale maxvl[0:6] <- m[6:12]