github-mirrors/ibex
1
0
Fork 0
mirror of https://github.com/lowRISC/ibex.git synced 2025-04-23 21:39:13 -04:00
Code Issues Projects Releases Packages Wiki Activity Actions

ID/EX stage: do not write to register file upon load errors

Browse source 
This commit fixes the write back FSM to not store values returned from
memory to the register file when the LSU is reporting a load error.

This bug was reported by @ivanmgribeiro. This commit resolves #162.
This commit is contained in:
Pirmin Vogel 2019-07-17 11:22:59 +01:00
parent f12b94c2a2
commit 63702b3e75
1 changed files with 1 additions and 1 deletions
Download patch file Download diff file Expand all files Collapse all files

2
rtl/ibex_id_stage.sv
View file

@ -622,7 +622,7 @@ module ibex_id_stage #(
if ((data_req_dec & lsu_valid_i) | (~data_req_dec & ex_valid_i)) begin
id_wb_fsm_ns = IDLE;
instr_multicycle_done_n = 1'b1;
regfile_we_wb = regfile_we_dec;
regfile_we_wb = regfile_we_dec & ~lsu_load_err_i;
instr_ret_o = 1'b1;
end else begin
stall_lsu = data_req_dec;