diff options
| author | Alejandro Soto <alejandro@34project.org> | 2022-10-23 21:35:08 -0600 |
|---|---|---|
| committer | Alejandro Soto <alejandro@34project.org> | 2022-10-23 21:35:08 -0600 |
| commit | 95644e64bfde13b3cc56537740851906f0eba173 (patch) | |
| tree | 01f430a4466219348ef5b2918a973f968c16eddc /rtl/core | |
| parent | 3e134fb9758ca0bc5b0d4cad9d95564aa019be5f (diff) | |
Fix PC writeback hazard
Diffstat (limited to 'rtl/core')
| -rw-r--r-- | rtl/core/control/control.sv | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/rtl/core/control/control.sv b/rtl/core/control/control.sv index c2484ef..0f5b067 100644 --- a/rtl/core/control/control.sv +++ b/rtl/core/control/control.sv @@ -83,7 +83,8 @@ module core_control assign next_pc_visible = fetch_insn_pc + 2; assign next_bubble = - ((dec_update_flags || dec_conditional) && (final_update_flags || update_flags)) + (final_writeback && final_rd == `R15) + || ((dec_update_flags || dec_conditional) && (final_update_flags || update_flags)) || (final_writeback && ((dec_uses_rn && (final_rd == dec_data.rn || dec_data.rn == `R15)) || final_rd == dec_snd.r || dec_snd.r == `R15)); |