From 1e07460d0e0d124ed32eb04f4b784674e52fcd8a Mon Sep 17 00:00:00 2001
From: Noah Limpert <nlimpert@g.hmc.edu>
Date: Wed, 29 Mar 2023 13:07:34 -0700
Subject: [PATCH] access of 4KiB spaced mem locations, aim to fill + evict a
 line of all 4 ways

---
 tests/coverage/lsu.S | 34 ++++++++++++++++++++++++++++++++++
 1 file changed, 34 insertions(+)
 create mode 100644 tests/coverage/lsu.S

diff --git a/tests/coverage/lsu.S b/tests/coverage/lsu.S
new file mode 100644
index 000000000..92d01b196
--- /dev/null
+++ b/tests/coverage/lsu.S
@@ -0,0 +1,34 @@
+//lsu.S 
+// A set of tests meant to stress the LSU to increase coverage
+// Manuel Alejandro Mendoza Manriquez mmendozamanriquez@g.hmc.edu
+// Noah Limpert nlimpert@g.hmc.edu
+// March 28 2023
+
+
+// Test 1
+// Cache ways 1,2,3 do not have SelFlush = 0
+// To make SelFlush = 0 we must evict lines from ways 1,2,3
+// Will load 4 words with same tags, filling 4 ways of cache
+// edit and store these words so that dirty bit is set ( is this necessary?)
+// Will then load 4 more words, evicting the previous 4 words 
+// will make SelFlush = 0 for all 4 ways. 
+
+// Load code to initialize stack, handle interrupts, terminate 
+#include "WALLY-init-lib.h"
+
+main:
+    li t0, 4096 //offset such that set will be same
+    li t1, 0 #t1 = i = 0
+    li t2, 8 # n = 8
+    add t3, sp, 0 // what our offset for loads and stores will be
+
+for1: bge t1, t2, done
+    add t3, t3, t0
+    lw t4, 0(t3)
+    addi t4, t4, 1
+    sw t4, 0(t3)
+    addi t1, t1, 1
+    j for1
+
+
+