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package com.seaofnodes.simple;
import com.seaofnodes.simple.codegen.CodeGen;
import com.seaofnodes.simple.type.TypeInteger;
import com.seaofnodes.simple.util.Ary;
import com.seaofnodes.simple.util.Utils;
import java.io.File;
import java.io.IOException;
import java.nio.file.Files;
import java.util.concurrent.TimeUnit;
import static org.junit.Assert.*;
// Call a C driver program, which calls a Simple-generated .o, and self-checks.
// Expects GCC from the default CLI, compiles C, compiles Simple, links and runs.
public abstract class TestC {
public static final String OS = System.getProperty("os.name");
public static final String CPU = System.getProperty("os.arch");
public static final String CALL_CONVENTION = OS.startsWith("Windows") ? "win64" : "SystemV";
public static final String CPU_PORT = switch( CPU ) {
case "amd64" -> "x86_64_v2";
default -> throw Utils.TODO("Map Yer CPU Port Here");
};
public static final String CPU_ABI = CPU_PORT+"_"+CALL_CONVENTION;
public static final String RELEASE_SYS_DIR = "build/release/"+CPU_ABI;
public static final String C_DRIVERS_DIR = "src/test/java/com/seaofnodes/simple/progs/";
/**
* Compile, link and run
* - WITH a C driver
* - using the default OS/CPU calling convention.
* - no lib sys
*/
public static void runC( String src, String base, String expected, int spills) throws IOException {
String cfile = C_DRIVERS_DIR+base+".c";
run(src, base, null, CALL_CONVENTION, "", cfile, expected, spills);
}
/**
* Compile, link and run
* - withOUT a C driver
* - using the default OS/CPU calling convention.
* - no lib sys
*/
public static void runSF( String src, String base, String expected, int spills ) throws IOException {
run(src, base, null, CALL_CONVENTION, null,null, expected,spills);
}
/**
* Compile, link and run
* - withOUT a C driver
* - using the default OS/CPU calling convention.
* - WITH a test lib sys
*/
public static void runSYS( String src, String base, String expected, int spills ) throws IOException {
Ary<String> externPaths = new Ary<>(new String[]{RELEASE_SYS_DIR});
run(src, base, externPaths, CALL_CONVENTION, null,null, expected,spills);
}
/**
* Compile, link and run - general case
*
* @param src Program source to compile
* @param base Compiled binary final base name
* @param externPaths External symbol search path
* @param simple_conv Argument convention when calling Simple code
* @param c_conv Argument convention when calling C code, or null if not
* linking against a C driver program
* @param cfile Associated C program which will drive the Simple program,
* or null if not linking against a C driver program
* @param expected Expected stdout string
* @param spills Expected limit on spill code, used to validate the
* register allocation is reasonable
*/
public static void run( String src, String base, Ary<String> externPaths, String simple_conv, String c_conv, String cfile, String expected, int spills ) throws IOException {
run(src, base, externPaths, simple_conv, c_conv, cfile, null, expected, spills);
}
public static void run( String src, String base, Ary<String> externPaths, String simple_conv, String c_conv, String cfile, String stdin, String expected, int spills ) throws IOException {
// Simple file base-name example:
// foo.smp ->
// build/objs/foo.o - object file
// build/objs/foo.exe - linked executable Windows
// build/objs/foo - linked executable Linux
String pathBase = "build/objs/"+base;
String obj = pathBase+".o";
String exe = pathBase+(OS.startsWith("Windows") ? ".exe" : "");
// Compile simple, emit ELF
CodeGen code = new CodeGen(null,"build/objs",externPaths,base,src,126L,TypeInteger.BOT);
code.driver( CPU_PORT, simple_conv, false, cfile==null );
String result = gcc(obj, c_conv, cfile, stdin, linkObjs(externPaths), exe );
assertEquals(expected,result);
// 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);
}
// Link with gcc, and execute the resulting binary, returning stdout as a
// String. Any errors *assert* instead of returning some error code; this
// utility is meant to execute inside a JUnit test which will catch the
// assert and flag the test as failed.
public static String gcc( String main, double ignore, String... objs ) throws IOException {
String BLDDIR = "build/objs/test0/";
String exe = BLDDIR+main+(OS.startsWith("Windows") ? ".exe" : "");
return gcc(objs[0],null,null,false,exe);
}
// Link with gcc, and execute the resulting binary, returning stdout as a
// String. Any errors *assert* instead of returning some error code; this
// utility is meant to execute inside a JUnit test which will catch the
// assert and flag the test as failed.
public static String gcc( String obj, String c_conv, String cfile, boolean stdin, String... args ) throws IOException {
return gcc(obj,c_conv,cfile,stdin ? "" : null,null,args);
}
public static String gcc( String obj, String c_conv, String cfile, String stdin, String... args ) throws IOException {
return gcc(obj,c_conv,cfile,stdin,null,args);
}
public static String gcc( String obj, String c_conv, String cfile, String stdin, Ary<String> linkObjs, String... args ) throws IOException {
// Compile the C program. Compiling code and constants in the low
// 2Gig. Pointers are 64b BUT since always in the low 2G all the
// high bits are zero - and Simple code can be emitted treating
// pointers as 4bytes.
var params = new Ary<>(String.class);
params.add("gcc");
if( cfile!=null ) params.add(cfile); // Associated C driver, usually has a `main`
params.add(obj);
if( linkObjs != null )
params.addAll(linkObjs.asAry());
params.addAll(new String[] {
"-lm", // Picks up 'sqrt' for newtonFloat tests to compare
"-g",
"-o",
args[0],
});
// Calling convention for C calls, if any
if( cfile!=null ) {
params.add("-D");
params.add("CALL_CONV="+c_conv);
}
// Run GCC to link (optionally compile C driver code)
Process gcc = new ProcessBuilder(params.asAry()).redirectErrorStream(true).start();
int exit;
try {
boolean normal = gcc.waitFor(2, TimeUnit.SECONDS);
exit = normal ? gcc.exitValue() : -1; // no exit???
} catch( InterruptedException e ) {
throw new IOException("interrupted");
}
String result = new String(gcc.getInputStream().readAllBytes());
if( exit!=0 ) {
System.err.println("gcc error code: "+exit);
System.err.println(result);
}
assertEquals( 0, exit );
//assertTrue(result.isEmpty()); // No data in error stream
// Execute results
ProcessBuilder smp = new ProcessBuilder(args);
File stdinFile = null;
File stdoutFile = File.createTempFile("simple-stdout",".txt");
smp.redirectOutput(stdoutFile);
if( stdin!=null && stdin.isEmpty() ) smp.redirectInput(ProcessBuilder.Redirect.INHERIT);
else if( stdin!=null ) {
stdinFile = File.createTempFile("simple-stdin",".txt");
Files.writeString(stdinFile.toPath(),stdin);
smp.redirectInput(stdinFile);
}
Process p = smp.start();
if( stdin==null )
p.getOutputStream().close();
try { exit = (byte)p.waitFor(); } catch( InterruptedException e ) { throw new IOException("interrupted"); }
result = Files.readString(stdoutFile.toPath());
if( stdinFile != null )
stdinFile.delete();
stdoutFile.delete();
if( exit!=0 )
return "exec exit code: "+exit;
return result;
}
private static Ary<String> linkObjs(Ary<String> externPaths) {
if( externPaths == null )
return null;
Ary<String> objs = new Ary<>(String.class);
for( String path : externPaths ) {
File file = new File(path);
if( file.isFile() && file.getName().endsWith(".o") )
objs.add(file.toString());
else if( file.isDirectory() ) {
File sys = new File(file,"sys.o");
if( sys.isFile() )
objs.add(sys.toString());
}
}
return objs.isEmpty() ? null : objs;
}
}
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