diff options
Diffstat (limited to '')
| -rw-r--r-- | rtl/core/control/stall.sv | 11 |
1 files changed, 2 insertions, 9 deletions
diff --git a/rtl/core/control/stall.sv b/rtl/core/control/stall.sv index d590325..d2c4de8 100644 --- a/rtl/core/control/stall.sv +++ b/rtl/core/control/stall.sv @@ -10,9 +10,7 @@ module core_control_stall input ctrl_cycle next_cycle, input logic final_update_flags, - update_flags, final_writeback, - writeback, input reg_num final_rd, output logic halted, @@ -21,8 +19,7 @@ module core_control_stall next_bubble ); - logic pc_rd_hazard, pc_wr_hazard, rn_pc_hazard, snd_pc_hazard, - flags_hazard, flags_dependency, updating_flags; + logic pc_rd_hazard, pc_wr_hazard, rn_pc_hazard, snd_pc_hazard, flags_hazard; assign stall = !next_cycle.issue || next_bubble || halt; assign halted = halt && !next_bubble; @@ -32,13 +29,9 @@ module core_control_stall assign pc_rd_hazard = final_writeback && (rn_pc_hazard || snd_pc_hazard); assign pc_wr_hazard = final_writeback && final_rd == `R15; assign rn_pc_hazard = dec.data.uses_rn && dec.data.rn == `R15; + assign flags_hazard = dec.ctrl.conditional && final_update_flags; assign snd_pc_hazard = !dec.snd.is_imm && dec.snd.r == `R15; - assign flags_hazard = flags_dependency && updating_flags; - - assign updating_flags = final_update_flags || update_flags; - assign flags_dependency = dec.psr.update_flags || dec.ctrl.conditional; - always_ff @(posedge clk or negedge rst_n) bubble <= !rst_n ? 0 : next_cycle.issue && next_bubble; |