From: Michael Neuling Date: Thu, 14 Jul 2022 00:32:05 +0000 (+1000) Subject: Metavalue cleanup for loadstore1.vhdl X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=738702f2e2b7c938a97671c11e7a0a9679302255;p=microwatt.git Metavalue cleanup for loadstore1.vhdl Signed-off-by: Michael Neuling --- diff --git a/loadstore1.vhdl b/loadstore1.vhdl index 0a2f088..439f124 100644 --- a/loadstore1.vhdl +++ b/loadstore1.vhdl @@ -625,8 +625,12 @@ begin byte_offset := unsigned(r1.addr0(2 downto 0)); for i in 0 to 7 loop k := (to_unsigned(i, 3) - byte_offset) xor r1.req.brev_mask; - j := to_integer(k) * 8; - store_data(i * 8 + 7 downto i * 8) <= r1.req.store_data(j + 7 downto j); + if is_X(k) then + store_data(i * 8 + 7 downto i * 8) <= (others => 'X'); + else + j := to_integer(k) * 8; + store_data(i * 8 + 7 downto i * 8) <= r1.req.store_data(j + 7 downto j); + end if; end loop; dbg_spr_rd := dbg_spr_req and not (r1.req.valid and r1.req.read_spr); @@ -757,8 +761,12 @@ begin -- load data formatting -- shift and byte-reverse data bytes for i in 0 to 7 loop - j := to_integer(r2.byte_index(i)) * 8; - data_permuted(i * 8 + 7 downto i * 8) := d_in.data(j + 7 downto j); + if is_X(r2.byte_index(i)) then + data_permuted(i * 8 + 7 downto i * 8) := (others => 'X'); + else + j := to_integer(r2.byte_index(i)) * 8; + data_permuted(i * 8 + 7 downto i * 8) := d_in.data(j + 7 downto j); + end if; end loop; -- Work out the sign bit for sign extension. @@ -779,7 +787,9 @@ begin -- trim and sign-extend for i in 0 to 7 loop - if i < to_integer(unsigned(r2.req.length)) then + if is_X(r2.req.length) then + trim_ctl(i) := "XX"; + elsif i < to_integer(unsigned(r2.req.length)) then if r2.req.dword_index = '1' then trim_ctl(i) := '1' & not r2.use_second(i); else