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package com.jogamp.common.os;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.io.RandomAccessFile;
import java.util.List;
import jogamp.common.os.elf.ElfHeader;
import jogamp.common.os.elf.Section;
import jogamp.common.os.elf.SectionArmAttributes;
import jogamp.common.os.elf.SectionHeader;
import org.junit.Test;
import com.jogamp.common.os.Platform.OSType;
import com.jogamp.junit.util.JunitTracer;
public class TestElfReader01 extends JunitTracer {
public static String GNU_LINUX_SELF_EXE = "/proc/self/exe";
public static String ARM_HF_EXE = "tst-exe-armhf";
public static String ARM_SF_EXE = "tst-exe-arm";
private static boolean checkFileReadAccess(File file) {
try {
return file.isFile() && file.canRead();
} catch (Throwable t) { }
return false;
}
static File findJVMLib(String libName) {
ClassLoader cl = TestElfReader01.class.getClassLoader();
final List<String> possibleLibPaths = NativeLibrary.enumerateLibraryPaths(libName, libName, libName, true, cl);
for(int i=0; i<possibleLibPaths.size(); i++) {
final String libPath = possibleLibPaths.get(i);
final File lib = new File(libPath);
System.err.println("XXX2 #"+i+": test "+lib);
if( checkFileReadAccess(lib) ) {
return lib;
}
System.err.println("XXX2 #"+i+": "+lib+" not readable");
}
return null;
}
@Test
public void testGNULinuxSelfExe () throws IOException {
if( OSType.LINUX == Platform.getOSType() ) {
File f = new File(GNU_LINUX_SELF_EXE);
if( checkFileReadAccess(f) ) {
testElfHeaderImpl(f, false);
}
}
}
@Test
public void testJavaLib () throws IOException {
File jvmLib = findJVMLib("java");
if( null == jvmLib ) {
jvmLib = findJVMLib("jvm");
}
if( null != jvmLib ) {
testElfHeaderImpl(jvmLib, false);
}
}
void testElfHeaderImpl(File file, boolean fileOutSections) throws IOException {
System.err.println("Test file "+file.getAbsolutePath());
RandomAccessFile in = new RandomAccessFile(file, "r");
try {
final ElfHeader eh;
try {
eh = ElfHeader.read(in);
} catch (Exception e) {
System.err.println("Probably not an ELF file - or not in current format: (catched) "+e.getMessage());
e.printStackTrace();
return;
}
int i=0;
System.err.println(eh);
System.err.println("SH entsz "+eh.d.getE_shentsize());
System.err.println("SH off "+toHexString(eh.d.getE_shoff()));
System.err.println("SH strndx "+eh.d.getE_shstrndx());
System.err.println("SH num "+eh.sht.length);
if( 0 < eh.sht.length ) {
System.err.println("SH size "+eh.sht[0].d.getBuffer().limit());
}
{
SectionHeader sh = eh.getSectionHeader(SectionHeader.SHT_ARM_ATTRIBUTES);
boolean abiVFPArgsAcceptsVFPVariant = false;
if( null != sh ) {
final SectionArmAttributes sArmAttrs = (SectionArmAttributes) sh.readSection(in);
final SectionArmAttributes.Attribute abiVFPArgsAttr = sArmAttrs.get(SectionArmAttributes.Tag.ABI_VFP_args);
if( null != abiVFPArgsAttr ) {
abiVFPArgsAcceptsVFPVariant = SectionArmAttributes.abiVFPArgsAcceptsVFPVariant(abiVFPArgsAttr.getULEB128());
}
}
System.err.println("abiVFPArgsAcceptsVFPVariant "+abiVFPArgsAcceptsVFPVariant);
}
for(i=0; i<eh.sht.length; i++) {
final SectionHeader sh = eh.sht[i];
System.err.println(sh);
final int type = sh.getType();
if( SectionHeader.SHT_STRTAB == type ) {
dumpSection(in, sh, "SHT_STRTAB", fileOutSections);
} else if( SectionHeader.SHT_ARM_ATTRIBUTES == type ) {
dumpSection(in, sh, "SHT_ARM_ATTRIBUTES", fileOutSections);
}
}
} finally {
in.close();
}
}
static void dumpSection(RandomAccessFile in, SectionHeader sh, String name, boolean fileOut) throws IllegalArgumentException, IOException {
final Section s = sh.readSection(in);
if(fileOut) {
File outFile = new File("ElfSection-"+sh.getIndex()+"-"+name);
OutputStream out = new BufferedOutputStream(new FileOutputStream(outFile));
try {
out.write(s.data, s.offset, s.length);
} finally {
out.close();
}
}
System.err.println(name+": read "+s.length+", "+s);
}
public static void main(String args[]) throws IOException {
String tstname = TestElfReader01.class.getName();
org.junit.runner.JUnitCore.main(tstname);
}
static String toHexString(int i) { return "0x"+Integer.toHexString(i); }
static String toHexString(long i) { return "0x"+Long.toHexString(i); }
}
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