1 files changed, 55 insertions, 0 deletions
diff --git a/chapter29/src/test/java/com/seaofnodes/simple/TestRisc5.java b/chapter29/src/test/java/com/seaofnodes/simple/TestRisc5.java
new file mode 100644
index 00000000..10c75d3f
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+++ b/chapter29/src/test/java/com/seaofnodes/simple/TestRisc5.java
@@ -0,0 +1,55 @@
+package com.seaofnodes.simple;
+
+import com.seaofnodes.isa.eval.EvalRisc5;
+
+import com.seaofnodes.simple.codegen.RegAllocTestSupport.CheckedCodeGen;
+import com.seaofnodes.simple.codegen.CodeGen;
+import com.seaofnodes.simple.codegen.Encoding;
+import com.seaofnodes.simple.node.FunNode;
+import com.seaofnodes.simple.node.cpus.riscv.riscv;
+import com.seaofnodes.simple.util.BAOS;
+import java.io.IOException;
+
+import static org.junit.Assert.*;
+
+// Runs 32-bit R5 code in an emulator
+public abstract class TestRisc5 {
+
+    public static EvalRisc5 build( String src, String main, int arg, int spills, boolean print ) throws IOException {
+        // Compile and export Simple
+        CodeGen code = new CheckedCodeGen(src).driver("riscv", "SystemV",true,false);
+
+        // Allocation quality not degraded
+        int delta = spills>>3;
+        if( delta==0 ) delta = 1;
+        if( spills != -1 && !CodeGen.iterSeedOverridden() )
+            assertEquals("Expect spills:",spills,code._regAlloc._spillScaled,delta);
+
+        // Image
+        byte[] image = new byte[1<<20]; // A megabyte (1024*1024 bytes)
+        EvalRisc5 R5 = new EvalRisc5(image, 1<<16);
+        int start = 0;          // Code at offset 0
+        int cpool = fill(code._encoding._bits ,image,start);
+        int sdata = fill(code._encoding._cpool,image,cpool);
+        int end   = fill(code._encoding._sdata,image,sdata);
+
+        // Initial incoming int arg
+        R5.regs[riscv.A0] = arg;
+        // malloc memory starts at 64K and goes up
+
+        // Look up starting PC or zero if not given
+        if( main!=null )
+            for( FunNode fun : code._linker )
+                if( fun != null && !fun.isDead() && fun._compunit == code.compunit() && main.equals(fun._name) )
+                    R5._pc = code._encoding.opStart(fun);
+
+        return R5;
+    }
+
+    // Fill bits into image; return end point rounded up.
+    private static int fill( BAOS bits, byte[] image, int off) {
+        System.arraycopy(bits.buf(), 0, image, off, bits.size());
+        return (off+bits.size() + 15) & -16;
+    }
+
+}