Added .equiv directives. Need to fix runtime exceptions

src/main/asm/chocopy/common/makeint.s

@@ -1,4 +1,3 @@
-<<<<<<< HEAD
 # Box integer
 	addi sp, sp, -8
 	sw ra, 4(sp)
@@ -9,17 +8,4 @@
 	sw t0, @.__int__(a0)
 	lw ra, 4(sp)
 	addi sp, sp, 8
-	jr ra
+	jr ra
-=======
-
-    addi sp, sp, -8
-    sw ra, 4(sp)
-    sw a0, 0(sp)
-    la a0, $int$prototype
-    jal ra, alloc
-    lw t0, 0(sp)
-    sw t0, @.__int__(a0)
-    lw ra, 4(sp)
-    addi sp, sp, 8
-    jr ra
->>>>>>> origin/bill/merge-cond-cls

src/main/java/chocopy/pa3/CodeGenImpl.java

@@ -56,8 +56,12 @@ public class CodeGenImpl extends CodeGenBase
     /** A code generator emitting instructions to BACKEND. */
     public CodeGenImpl(RiscVBackend backend) 
     {
+    		
         super(backend);
-        
+        backend.defineSym("listHeaderWords", "4"); 
+        backend.defineSym("strHeaderWords", "4");
+        backend.defineSym("bool.True", "const_1"); 
+        backend.defineSym("bool.False", "const_0");
     }
     
     
@@ -76,6 +80,7 @@ public class CodeGenImpl extends CodeGenBase
      */
     protected void emitTopLevel(List<Stmt> statements) 
     {
+    	
         StmtAnalyzer stmtAnalyzer = new StmtAnalyzer(null);
         backend.emitADDI(SP, SP, -2 * backend.getWordSize(), "Saved FP and saved RA (unused at top level).");
         backend.emitSW(ZERO, SP, 0, "Top saved FP is 0.");
@@ -848,7 +853,6 @@ public class CodeGenImpl extends CodeGenBase
      * to out-of-bounds error and abort");
      */
     protected void emitCustomCode() {
-        
         emitStdFunc("concat");
         emitStdFunc("conslist");
         emitStdFunc("strcat");