1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
|
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;
import org.junit.FixMethodOrder;
import org.junit.runners.MethodSorters;
@FixMethodOrder(MethodSorters.NAME_ASCENDING)
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: (caught) "+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); }
}
|
