From e8136120d2229ee06354a9efe942ba7edc3cfbdc Mon Sep 17 00:00:00 2001 From: Pavel Pisa Date: Tue, 12 Feb 2019 23:18:27 +0100 Subject: Add signals and multiplexers for ALU inputs forwarding. Signed-off-by: Pavel Pisa --- qtmips_machine/core.cpp | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) (limited to 'qtmips_machine/core.cpp') diff --git a/qtmips_machine/core.cpp b/qtmips_machine/core.cpp index e744848..5c8d8f3 100644 --- a/qtmips_machine/core.cpp +++ b/qtmips_machine/core.cpp @@ -591,11 +591,11 @@ void CorePipelined::do_step(bool skip_break) { // Forward result value if (dt_d.alu_req_rs && dt_m.rwrite == dt_d.inst.rs()) { dt_d.val_rs = dt_m.towrite_val; - dt_d.ff_rs = FORWARD_FROM_M; + dt_d.ff_rs = FORWARD_FROM_W; } if (dt_d.alu_req_rt && dt_m.rwrite == dt_d.inst.rt()) { dt_d.val_rt = dt_m.towrite_val; - dt_d.ff_rt = FORWARD_FROM_M; + dt_d.ff_rt = FORWARD_FROM_W; } } else stall = true; @@ -609,11 +609,11 @@ void CorePipelined::do_step(bool skip_break) { // Forward result value if (dt_d.alu_req_rs && dt_e.rwrite == dt_d.inst.rs()) { dt_d.val_rs = dt_e.alu_val; - dt_d.ff_rs = FORWARD_FROM_W; + dt_d.ff_rs = FORWARD_FROM_M; } if (dt_d.alu_req_rt && dt_e.rwrite == dt_d.inst.rt()) { dt_d.val_rt = dt_e.alu_val; - dt_d.ff_rt = FORWARD_FROM_W; + dt_d.ff_rt = FORWARD_FROM_M; } } } else -- cgit v1.2.3