[Cryptech-Commits] [core/math/modexpng] 44/92: Added simulation-only code to measure multiplier load.

[git at cryptech.is]

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paul at psgd.org pushed a commit to branch master
in repository core/math/modexpng.

commit 657678ac85785aedeb53001ec4e5d2813cd5270a
Author: Pavel V. Shatov (Meister) <meisterpaul1 at yandex.ru>
AuthorDate: Wed Oct 23 16:59:30 2019 +0300

    Added simulation-only code to measure multiplier load.
---
 rtl/modexpng_core_top.v   |  4 +++-
 rtl/modexpng_mmm_dual.v   | 12 ++++++++++++
 rtl/modexpng_uop_engine.v |  6 ++----
 3 files changed, 17 insertions(+), 5 deletions(-)

diff --git a/rtl/modexpng_core_top.v b/rtl/modexpng_core_top.v
index 18c32bb..7fdb3c5 100644
--- a/rtl/modexpng_core_top.v
+++ b/rtl/modexpng_core_top.v
@@ -112,7 +112,7 @@ module modexpng_core_top
     // uOP Engine
     //
     `ifdef MODEXPNG_ENABLE_DEBUG
-    wire [1:0] uop_decoded_stop;
+    wire uop_decoded_stop;
     `endif
     
     modexpng_uop_engine uop_engine
@@ -125,6 +125,8 @@ module modexpng_core_top
 
         `ifdef MODEXPNG_ENABLE_DEBUG
         .uop_decoded_stop               (uop_decoded_stop),
+        `else
+        .uop_decoded_stop               (),
         `endif
 
         .crt_mode                       (crt_mode),
diff --git a/rtl/modexpng_mmm_dual.v b/rtl/modexpng_mmm_dual.v
index a868362..9b6695a 100644
--- a/rtl/modexpng_mmm_dual.v
+++ b/rtl/modexpng_mmm_dual.v
@@ -994,5 +994,17 @@ module modexpng_mmm_dual
             if (rdy && ena) rdy_reg <= 1'b0;
             if (!rdy && (fsm_state == MMM_FSM_STATE_STOP)) rdy_reg <= 1'b1; 
         end
+
+
+    //
+    // Debug
+    //
+    `ifdef MODEXPNG_ENABLE_DEBUG
+        real load_cyc_mult = 0.0;
+        always @(posedge clk)
+            //
+            if (dsp_xy_ce_m)
+                load_cyc_mult <= load_cyc_mult + 1.0;    
+    `endif
     
 endmodule
diff --git a/rtl/modexpng_uop_engine.v b/rtl/modexpng_uop_engine.v
index c7b064a..ae88d1a 100644
--- a/rtl/modexpng_uop_engine.v
+++ b/rtl/modexpng_uop_engine.v
@@ -6,9 +6,7 @@ module modexpng_uop_engine
     ena,
     rdy,
  
-    `ifdef MODEXPNG_ENABLE_DEBUG
     uop_decoded_stop,
-    `endif
     
     crt_mode,
     
@@ -88,9 +86,7 @@ module modexpng_uop_engine
     input                      ena;
     output                     rdy;
 
-    `ifdef MODEXPNG_ENABLE_DEBUG
     output                     uop_decoded_stop;
-    `endif
     
     input                      crt_mode;
     
@@ -312,6 +308,8 @@ module modexpng_uop_engine
     //
     `ifdef MODEXPNG_ENABLE_DEBUG
     assign uop_decoded_stop = (uop_fsm_state == UOP_FSM_STATE_DECODE) && uop_opcode_is_stop;
+    `else
+    assign uop_decoded_stop = 1'b0;
     `endif