Update fibo-hazards-template.S

seminaries/qtrvsim/fibo-hazards/fibo-hazards-template.S

-// fibo-hazards.S file template, rename and implement the algorithm
-// Test algorithm in qtrvsim_gui program
-// Select the CPU core configuration to
-//    Pipelined without hazard unit and cache
-// This option select version where RAW dependencies which leads
-// to hazards are not resolved in hardware, you need to schedule
-// instruction execution according to the pipeline structure
-// (classical 5-stage RISC-V) such way, that no dependency results
-// in a hazard
-
-// copy directory with the project to your repository to
-// the directory work/fibo-hazards
-// critical is location of the file work/fibo-hazards/fibo-hazards.S
-// which is checked by the scripts
-
-// The script loads number of the last Fibonacci series element to compute
-// into fibo_limit variable and expects computed series in memory starting
-// at address fibo_series, the series has to be followed by at least
-// one zero element
-
-// Directives to make interesting windows visible
+
 #pragma qtrvsim show registers
 #pragma qtrvsim show memory
 
@@ -31,27 +11,58 @@
 .globl _start
 
 _start:
+       la      a1, fibo_limit
+        la      a1, fibo_limit
+        la      a0, fibo_series
+        la      a0, fibo_series
+        addi    a1, a1, 8
+        nop
+        addi    a0, a0, 8
+        lw      a1, 0(a1)
+
+    li    t0, 0        
+    nop   
+    nop
+    sw    t0, 0(a0)//21c 
+    li t0, 1 
+    nop
+    nop
+    sw    t0, 4(a0)    //228  
+    li    t1, 2          
+    addi  a2, a0, 8      
 
-	la   a0, fibo_series
-	la   a1, fibo_limit
-	lw   a1, 0(a1) // number of elements in the array
+fibo:
+    beq   t1, a1, end_loop    
+    nop
+    lw    t2, -4(a2)          
+    lw    t3, -8(a2)       
+    nop
+    nop
+    add   t4, t2, t3          
+    nop
+    nop
+    sw    t4, 0(a2)            
+    addi  a2, a2, 4            
+    addi  t1, t1, 1           
+    j     fibo       
+    nop
 
-//Insert your code there
 
-//Final infinite loop
 end_loop:
 	fence           // flush cache memory
 	ebreak          // stop the simulator
 	j end_loop
 	nop
 
+
 .data
 // .align    2 // not supported by QtRVSim yet
-
 fibo_limit:
-	.word 15
+	.word 12
 fibo_series:
 	.skip 1000*4
 
+
 // Specify location to show in memory window
 #pragma qtrvsim focus memory fibo_limit
+