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package com.seaofnodes.simple;
import com.seaofnodes.simple.codegen.CodeGen;
import com.seaofnodes.simple.node.FunNode;
import com.seaofnodes.simple.node.Node;
import com.seaofnodes.simple.node.cpus.riscv.riscv;
import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Path;
import static org.junit.Assert.*;
// Runs 32-bit R5 code in an emulator
public abstract class TestRisc5 {
public static EvalRisc5 build( String file, int arg, int spills, boolean print ) throws IOException {
return build("src/test/java/com/seaofnodes/simple/progs",file, null, arg, spills, print);
}
// Compile and run a simple program
public static EvalRisc5 build( String dir, String file, String main, int arg, int spills, boolean print ) throws IOException {
// Compile and export Simple
String src = Files.readString(Path.of(dir+"/"+file+".smp"));
CodeGen code = new CodeGen(src).driver("riscv", "SystemV",null);
if( print ) { code.print_as_hex(); System.out.print(code.asm()); }
// Allocation quality not degraded
int delta = spills>>3;
if( delta==0 ) delta = 1;
if( spills != -1 )
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);
// Code at offset 0
System.arraycopy(code._encoding.bits(), 0, image, 0, code._encoding.bits().length);
// 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( Node use : code._start._outputs )
if( use instanceof FunNode fun && main.equals(fun._name) )
R5._pc = code._encoding._opStart[fun._nid];
return R5;
}
}
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