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Merge branch 'fix-branch-alias' into branch-alias

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Merging Anton's test case for this.

Signed-off-by: Michael Neuling <mikey@neuling.org>
This commit is contained in:
Michael Neuling 2022-08-10 10:29:59 +10:00
commit f093e30a64
1 changed files with 4 additions and 2 deletions
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6
fetch1.vhdl
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@ -53,7 +53,7 @@ architecture behaviour of fetch1 is
constant BTC_TAG_BITS : integer := 62 - BTC_ADDR_BITS;
constant BTC_TARGET_BITS : integer := 62;
constant BTC_SIZE : integer := 2 ** BTC_ADDR_BITS;
constant BTC_WIDTH : integer := BTC_TAG_BITS + BTC_TARGET_BITS + 1;
constant BTC_WIDTH : integer := BTC_TAG_BITS + BTC_TARGET_BITS + 2;
type btc_mem_type is array (0 to BTC_SIZE - 1) of std_ulogic_vector(BTC_WIDTH - 1 downto 0);
signal btc_rd_data : std_ulogic_vector(BTC_WIDTH - 1 downto 0) := (others => '0');
@ -111,6 +111,7 @@ begin
signal btc_wr_addr : std_ulogic_vector(BTC_ADDR_BITS - 1 downto 0);
begin
btc_wr_data <= w_in.br_taken &
r.virt_mode &
w_in.br_nia(63 downto BTC_ADDR_BITS + 2) &
w_in.redirect_nia(63 downto 2);
btc_wr_addr <= w_in.br_nia(BTC_ADDR_BITS + 1 downto 2);
@ -193,7 +194,8 @@ begin
v.nia(63 downto 32) := x"00000000";
end if;
if btc_rd_valid = '1' and r_int.rd_is_niap4 = '1' and
btc_rd_data(BTC_WIDTH - 2 downto BTC_TARGET_BITS)
btc_rd_data(BTC_WIDTH - 2) = r.virt_mode and
btc_rd_data(BTC_WIDTH - 3 downto BTC_TARGET_BITS)
= v.nia(BTC_TAG_BITS + BTC_ADDR_BITS + 1 downto BTC_ADDR_BITS + 2) then
v_int.predicted_taken := btc_rd_data(BTC_WIDTH - 1);
v_int.pred_not_taken := not btc_rd_data(BTC_WIDTH - 1);