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package com.seaofnodes.simple;
import com.seaofnodes.simple.codegen.CodeGen;
import com.seaofnodes.simple.codegen.Encoding;
import com.seaofnodes.isa.eval.EvalArm64;
import com.seaofnodes.isa.eval.EvalRisc5;
import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Path;
import org.junit.Test;
import static org.junit.Assert.*;
public class NativeAddressTest {
@Test public void testReturnedNativeAddress() throws IOException {
Path dir = Path.of("build/objs");
Files.createDirectories(dir);
Files.writeString(dir.resolve("nativeAddress.smp"), """
val getAbs = { ->
{ i32 -> i32 } abs = "C";
return abs;
};
""");
Files.writeString(dir.resolve("nativeAddress.c"), """
typedef int (*func)(int);
extern func getAbs(void);
int main(void) {
func f = getAbs();
return f(-7) != 7 || f(9) != 9;
}
""");
TestC.run("build/objs", "nativeAddress", "", -1);
}
@Test public void testEmulatedNativeAddress() throws IOException {
// No native call: return the address itself, patched to the emulator's
// known write entry. Both ports share Encoding's symbol lookup.
String src = "{ int -> int } write = \"C\"; return write;";
for( String cpu : new String[]{"arm","riscv"} ) {
CodeGen code = new CodeGen(src).driver(cpu,"SystemV",null);
byte[] bits = code._encoding.bits();
byte[] image = new byte[1<<20];
System.arraycopy(bits,0,image,0,bits.length);
if( cpu.equals("arm") ) {
EvalArm64 eval = new EvalArm64(image,1<<16);
assertEquals(0,eval.step(100));
assertEquals(Encoding.SENTINEL_WRITE,eval.regs[0]);
} else {
EvalRisc5 eval = new EvalRisc5(image,1<<16);
assertEquals(0,eval.step(100));
assertEquals(Encoding.SENTINEL_WRITE,eval.regs[10]);
}
}
}
}
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