Merge pull request TheThirdOne#74 from privat/test_selfmod

Test selfmod

src/rars/api/Program.java

@@ -60,6 +60,10 @@ public Program(Options set){
         simulation = new Memory();
     }
 
+    public Options getOptions() {
+        return set;
+    }
+
     /**
      * Assembles from a list of files
      *

test/RarsTest.java

@@ -48,19 +48,18 @@ Program setupProgram(boolean rv64) {
         Options opt = new Options();
         opt.startAtMain = true;
         opt.maxSteps = 1000000;
-        opt.selfModifyingCode = true;
         return new Program(opt);
     }
 
     public void checkPrograms() {
 
+        // 32-bit tests
         Program p = setupProgram(false);
         runDirectory("./test", p);
         runDirectory("./test/riscv-tests", p);
 
-        Globals.getSettings().setBooleanSettingNonPersistent(Settings.Bool.RV64_ENABLED,true);
-        InstructionSet.rv64 = true;
-        Globals.instructionSet.populate();
+        // 64-bit tests
+        p = setupProgram(true);
         runDirectory("./test", p);
         runDirectory("./test/riscv-tests-64", p);
 
@@ -100,6 +99,7 @@ public static String run(String path, Program p){
         int exitCode = 0;
         // TODO: better config system
         // This is just a temporary solution that should work for the tests I want to write
+        p.getOptions().selfModifyingCode = false;
         try {
             BufferedReader br = new BufferedReader(new FileReader(path));
             String line = br.readLine();
@@ -131,6 +131,11 @@ public static String run(String path, Program p){
                     programArgumentList = new ProgramArgumentList(args).getProgramArgumentList();
                 } else if (line.startsWith("#error:")) {
                     errorMessage = line.replaceFirst("#error:", "");
+                } else if (line.startsWith("#selfmod:")) {
+                    String selfmod = line.replaceFirst("#selfmod:", "");
+		            if (selfmod.equals("true")) {
+			            p.getOptions().selfModifyingCode = true;
+		            }
                 }
                 line = br.readLine();
             }

test/selfmod.s

@@ -1,4 +1,5 @@
 #exit:42
+#selfmod:true
 .text 
 main:
 	la s0, toload

test/selfmod_fail.s

@@ -0,0 +1,59 @@
+#error:Instruction load access error
+.text 
+main:
+	la s0, toload
+	la s1, torun
+
+	li a0, 2
+	call toload
+
+	# First copy by word to data
+	lw t0, (s0)
+	sw t0, (s1)
+	lw t0, 4(s0)
+	sw t0, 4(s1)
+
+	# try running it
+	call torun
+
+	# Copy by byte to data
+	mv s2, a0
+	mv a0, s0
+	mv a1, s1
+	call copy
+
+	mv a0, s2 
+	call torun
+
+	# copy to .text
+	mv s2, a0
+	la a0, torun
+	la a1, main
+	call copy
+
+	mv a0, s2 
+	call main
+
+
+	li a7, 93
+	ecall
+
+toload:
+	addi a0, a0, 10
+	ret
+
+copy:
+	li t0, 0
+	li t3, 8
+loop:
+	add t1, a0, t0
+	lb t1, (t1)
+	add t2, a1, t0
+	sb t1, (t2)
+	addi t0, t0, 1
+	blt t0, t3, loop
+	ret
+
+.data
+torun:
+	.space 8

test/selfmod_read.s

@@ -0,0 +1,8 @@
+# Test read-only in the code segment (should not require selfmod to be set)
+#stdout:1050771
+	.text
+foo:	li a7, 1 # PrintInt
+	lw a0, foo
+	ecall
+	li a7, 10
+	ecall