From f3b18ead59ae02f95dabbf0a1dea40873a816975 Mon Sep 17 00:00:00 2001 From: Alejandro Soto Date: Sun, 21 Jan 2024 06:23:46 -0600 Subject: rtl: refactor filenames and directory hierarchy --- rtl/core/control/stall.sv | 42 ------------------------------------------ 1 file changed, 42 deletions(-) delete mode 100644 rtl/core/control/stall.sv (limited to 'rtl/core/control/stall.sv') diff --git a/rtl/core/control/stall.sv b/rtl/core/control/stall.sv deleted file mode 100644 index 02a7552..0000000 --- a/rtl/core/control/stall.sv +++ /dev/null @@ -1,42 +0,0 @@ -`include "core/uarch.sv" - -module core_control_stall -( - input logic clk, - rst_n, - halt, - - input insn_decode dec, - - input ctrl_cycle next_cycle, - input logic rd_user, - final_update_flags, - final_restore_spsr, - final_psr_write, - final_writeback, - input reg_num final_rd, - - output logic halted, - stall, - bubble, - next_bubble -); - - logic pc_rd_hazard, pc_wr_hazard, rn_pc_hazard, snd_pc_hazard, psr_hazard, flags_hazard; - - assign stall = !next_cycle.issue || next_bubble || halt; - assign halted = halt && !next_bubble && next_cycle.issue; - assign next_bubble = pc_rd_hazard || pc_wr_hazard || flags_hazard || psr_hazard || rd_user; - - //FIXME: pc_rd_hazard no debería definirse sin final_writeback? - assign psr_hazard = final_psr_write || final_restore_spsr; - 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; - - always_ff @(posedge clk or negedge rst_n) - bubble <= !rst_n ? 0 : next_cycle.issue && next_bubble; - -endmodule -- cgit v1.2.3