Chapter 21: Instruction Encoding and ELFlinear-chapter21

Co-authored-by:    Co-authored-by: Cliff Click <cliffc@acm.org>
Co-authored-by:    Co-authored-by: godalming123 <68993177+godalming123@users.noreply.github.com>

1 files changed, 24 insertions, 57 deletions

diff --git a/src/test/java/com/seaofnodes/simple/BrainFuckTest.java b/src/test/java/com/seaofnodes/simple/BrainFuckTest.java
index c23bb301..2733620e 100644
--- a/src/test/java/com/seaofnodes/simple/BrainFuckTest.java
+++ b/src/test/java/com/seaofnodes/simple/BrainFuckTest.java
@@ -1,71 +1,38 @@
 package com.seaofnodes.simple;
 
 import com.seaofnodes.simple.codegen.CodeGen;
-import java.nio.charset.StandardCharsets;
+import com.seaofnodes.simple.node.cpus.arm.arm;
+import com.seaofnodes.simple.node.cpus.riscv.riscv;
+import java.io.IOException;
+import java.nio.file.Files;
+import java.nio.file.Path;
 import org.junit.Test;
 import static org.junit.Assert.assertEquals;
 import static org.junit.Assert.fail;
-import static com.seaofnodes.simple.Main.PORTS;
 
 public class BrainFuckTest {
 
-    @Test
-    public void testBrainfuck() {
-        var program = "++++++++[>++++[>++>+++>+++>+<<<<-]>+>+>->>+[<]<-]>>.>---.+++++++..+++.>>.<-.<.+++.------.--------.>>+.>++.".getBytes(StandardCharsets.UTF_8);
-        var encoded = new StringBuilder("u8[] !program = new u8[").append(program.length).append("];");
-        for (int i = 0; i < program.length; i++) {
-            int value = program[i] & 0xFF;
-            encoded.append("program[").append(i).append("] = ").append(value).append(";");
-        }
+    @Test public void testBrainFuck() throws IOException {
+        String brain_fuck = "Hello World!\n";
+        TestC.run("brain_fuck", brain_fuck, 40);
 
-        String src = encoded + """
+        EvalRisc5 R5 = TestRisc5.build("brain_fuck", 0, 44, false);
+        int trap = R5.step(100000);
+        assertEquals(0,trap);
+        int ptr = (int)R5.regs[riscv.A0];
+        assertEquals(brain_fuck.length(),R5.ld4s(ptr));
+        for( int i=0; i<brain_fuck.length(); i++ )
+            assertEquals(brain_fuck.charAt(i), R5.ld1z(ptr+4+i));
 
-int d = 0;
-u8[] !output = new u8[0];
-u8[] !data = new u8[100];
+        EvalArm64 A5 = TestArm64.build("brain_fuck", 0, 28, false);
+        int trap_arm = A5.step(100000);
+        assertEquals(0,trap_arm);
+        assertEquals(0,trap);
+        int ptr_arm = (int)A5.regs[arm.X0];
+        assertEquals(brain_fuck.length(),A5.ld4s(ptr_arm));
 
-for( int pc = 0; pc < program#; pc++ ) {
-    var command = program[pc];
-    if (command == 62) {
-        d++;
-    } else if (command == 60) {
-        d--;
-    } else if (command == 43) {
-        data[d]++;
-    } else if (command == 45) {
-        data[d]--;
-    } else if (command == 46) {
-        // Output a byte; increase the output array size
-        var old = output;
-        output = new u8[output# + 1];
-        for( int i = 0; i < old#; i++ )
-            output[i] = old[i];
-        output[old#] = data[d]; // Add the extra byte on the end
-    } else if (command == 44) {
-        data[d] = 42;
-    } else if (command == 91) {
-        if (data[d] == 0) {
-            for( int d = 1; d > 0; ) {
-                command = program[++pc];
-                if (command == 91) d++;
-                if (command == 93) d--;
-            }
-        }
-    } else if (command == 93) {
-        if (data[d]) {
-            for( int d = 1; d > 0; ) {
-                command = program[--pc];
-                if (command == 93) d++;
-                if (command == 91) d--;
-            }
-        }
-    }
-}
-return output;
-""";
-        Chapter20Test.testCPU(src,"x86_64_v2", "SystemV",28,null);
-        Chapter20Test.testCPU(src,"riscv"    , "SystemV",18,null);
-        Chapter20Test.testCPU(src,"arm"      , "SystemV",12,null);
-        //assertEquals("Hello World!\n", Eval2.eval(code, 0, 10000));
+        for( int i=0; i<brain_fuck.length(); i++ )
+            assertEquals(brain_fuck.charAt(i), A5.ld1z(ptr+4+i));
     }
+
 }