diff options
Diffstat (limited to 'rtl/core/control/ldst')
| -rw-r--r-- | rtl/core/control/ldst/ldst.sv | 8 |
1 files changed, 3 insertions, 5 deletions
diff --git a/rtl/core/control/ldst/ldst.sv b/rtl/core/control/ldst/ldst.sv index 0e0a39c..57f8edc 100644 --- a/rtl/core/control/ldst/ldst.sv +++ b/rtl/core/control/ldst/ldst.sv @@ -8,7 +8,6 @@ module core_control_ldst input insn_decode dec, input logic issue, mem_ready, - mem_ex_fail, input word rd_value_b, q_alu, q_shifter, @@ -43,10 +42,7 @@ module core_control_ldst assign popped = increment ? popped_lower : popped_upper; assign ldst_next = !cycle.transfer || mem_ready; - assign mem_data_wr = q_shifter; - - //TODO - assign mem_ex_lock = 0; + assign mem_data_wr = mem_ex_lock ? alu_b : q_shifter; core_control_ldst_pop pop ( @@ -83,6 +79,7 @@ module core_control_ldst mem_write <= 0; mem_start <= 0; mem_offset <= 0; + mem_ex_lock <= 0; end else begin if(mem_start) mem_start <= 0; @@ -101,6 +98,7 @@ module core_control_ldst mem_regs <= dec.ldst.regs; mem_write <= !dec.ldst.load; + mem_ex_lock <= dec.ldst.exclusive; end else if(next_cycle.transfer) begin if(!cycle.transfer) begin ldst <= 0; |