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Code Issues Wiki Activity

The Elf class should not depend of GNU

Browse source 
binutils tools like Addr2line or CPPFilt
	It is an Elf Parser and the needs of those tools
	are now part of IBinaryParser class
	* utils/org/eclipse/cdt/uitls/elf/AR.java
	* utils/org/eclipse/cdt/uitls/elf/Elf.java
	* utils/org/eclipse/cdt/uitls/elf/ElfHelperjava
	* utils/org/eclipse/cdt/uitls/elf/parser/ElfBinaryObject.java
This commit is contained in:
Alain Magloire 2004-06-03 16:02:20 +00:00
parent 2989ee4537
commit 9ca9d91f64
5 changed files with 16 additions and 162 deletions
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11
core/org.eclipse.cdt.core/ChangeLog
View file

@ -1,3 +1,14 @@
2004-06-03 Alain Magloire
The Elf class should not depend of GNU
binutils tools like Addr2line or CPPFilt
It is an Elf Parser and the needs of those tools
are now part of IBinaryParser class
* utils/org/eclipse/cdt/uitls/elf/AR.java
* utils/org/eclipse/cdt/uitls/elf/Elf.java
* utils/org/eclipse/cdt/uitls/elf/ElfHelperjava
* utils/org/eclipse/cdt/uitls/elf/parser/ElfBinaryObject.java
2004-06-01 Alain Magloire
A release of the CDT was distributed with

4
core/org.eclipse.cdt.core/utils/org/eclipse/cdt/utils/elf/AR.java
View file

@ -189,10 +189,6 @@ public class AR {
return new Elf(filename, elf_offset);
}
public Elf getElf(boolean filter_on) throws IOException {
return new Elf(filename, elf_offset, filter_on);
}
public byte[] getObjectData() throws IOException {
byte[] temp = new byte[(int) size];
if (efile != null) {

156
core/org.eclipse.cdt.core/utils/org/eclipse/cdt/utils/elf/Elf.java
View file

@ -22,7 +22,6 @@ public class Elf {
protected ELFhdr ehdr;
protected Section[] sections;
protected Addr2line addr2line;
protected boolean cppFiltEnabled = true;
protected CPPFilt cppFilt;
protected String file;
protected byte[] section_strtab;
@ -314,22 +313,6 @@ public class Elf {
private Section sym_section;
private String cppFilt(String in) {
if (cppFiltEnabled) {
try {
if (in.indexOf("__") != -1 || in.indexOf("_._") != -1) { //$NON-NLS-1$ //$NON-NLS-2$
if (cppFilt == null) {
cppFilt = new CPPFilt();
}
return cppFilt.getFunction(in);
}
} catch (IOException e) {
return in;
}
}
return in;
}
public Symbol( Section section ) {
sym_section = section;
}
@ -362,7 +345,7 @@ public class Elf {
try {
Section sections[] = getSections();
Section symstr = sections[(int)sym_section.sh_link];
name = cppFilt(string_from_elf_section(symstr, (int)st_name ));
name = string_from_elf_section(symstr, (int)st_name );
} catch (IOException e ) {
return EMPTY_STRING;
}
@ -370,118 +353,7 @@ public class Elf {
return name;
}
/**
* Returns line information in the form of filename:line
* and if the information is not available may return null
* _or_ may return ??:??
*/
public String lineInfo() throws IOException {
if ( line == null ) {
if ( addr2line == null )
addr2line = new Addr2line(file);
long value = st_value;
// We try to get the nearest match
// since the symbol may not exactly align with debug info.
// In C line number 0 is invalid, line starts at 1 for file, we use
// this for validation.
for (int i = 0; i <= 20; i += 4, value += i) {
line = addr2line.getLine(value);
if (line != null) {
int colon = line.lastIndexOf(':');
String number = line.substring(colon + 1);
if (!number.startsWith("0")) { //$NON-NLS-1$
break; // bail out
}
}
}
func = addr2line.getFunction(value);
}
return line;
}
public String lineInfo(long vma) throws IOException {
if ( addr2line == null )
addr2line = new Addr2line(file);
return addr2line.getLine(vma);
}
/**
* If the function is available from the symbol information,
* this will return the function name. May return null if
* the function can't be determined.
*/
public String getFunction() throws IOException {
if ( func == null ) {
lineInfo();
}
return func;
}
/**
* If the filename is available from the symbol information,
* this will return the base filename information. May
* return null if the filename can't be determined.
*/
public String getFilename() throws IOException {
if ( line == null ) {
lineInfo();
}
int index1, index2;
if(line == null || (index1 = line.lastIndexOf(':')) == -1) {
return null;
}
// we do this because addr2line on win produces
// <cygdrive/pathtoexc/C:/pathtofile:##>
index2 = line.indexOf(':');
if ( index1 == index2 ) {
index2 = 0;
} else {
index2--;
}
return line.substring(index2, index1);
}
/**
* Returns the line number of the function which is closest
* associated with the address if it is available.
* from the symbol information. If it is not available,
* then -1 is returned.
*/
public int getFuncLineNumber() throws IOException {
if ( line == null ) {
lineInfo();
}
int index;
if(line == null || (index = line.lastIndexOf(':')) == -1) {
return -1;
}
try {
int lineno = Integer.parseInt(line.substring(index + 1));
return (lineno == 0) ? -1 : lineno;
} catch(Exception e) {
return -1;
}
}
/**
* Returns the line number of the file if it is available
* from the symbol information. If it is not available,
* then -1 is returned.
*/
public int getLineNumber(long vma) throws IOException {
int index;
String ligne = lineInfo(vma);
if(ligne == null || (index = ligne.lastIndexOf(':')) == -1) {
return -1;
}
try {
int lineno = Integer.parseInt(ligne.substring(index + 1));
return (lineno == 0) ? -1 : lineno;
} catch(Exception e) {
return -1;
}
}
}
/**
@ -628,11 +500,9 @@ public class Elf {
return (Dynamic[])dynList.toArray(new Dynamic[0]);
}
private void commonSetup( String file, long offset, boolean filton )
private void commonSetup( String file, long offset )
throws IOException
{
this.cppFiltEnabled = filton;
try {
efile = new ERandomAccessFile(file, "r"); //$NON-NLS-1$
efile.setFileOffset( offset );
@ -649,28 +519,12 @@ public class Elf {
protected Elf () {
}
public Elf (String file, long offset) throws IOException {
commonSetup( file, offset, true );
public Elf (String file, long offset) throws IOException {
commonSetup( file, offset);
}
public Elf (String file) throws IOException {
commonSetup( file, 0, true );
}
public Elf (String file, long offset, boolean filton) throws IOException {
commonSetup( file, offset, filton );
}
public Elf (String file, boolean filton) throws IOException {
commonSetup( file, 0, filton );
}
public boolean cppFilterEnabled() {
return cppFiltEnabled;
}
public void setCppFilter( boolean enabled ) {
cppFiltEnabled = enabled;
commonSetup( file, 0);
}
public ELFhdr getELFhdr() throws IOException {

5
core/org.eclipse.cdt.core/utils/org/eclipse/cdt/utils/elf/ElfHelper.java
View file

@ -104,11 +104,6 @@ public class ElfHelper {
commonSetup();
}
public ElfHelper(String filename, boolean filton) throws IOException {
elf = new Elf(filename, filton);
commonSetup();
}
/** Give back the Elf object that this helper is wrapping */
public Elf getElf() {
return elf;

2
core/org.eclipse.cdt.core/utils/org/eclipse/cdt/utils/elf/parser/ElfBinaryObject.java
View file

@ -127,8 +127,6 @@ public class ElfBinaryObject extends BinaryObjectAdapter {
protected void loadSymbols(ElfHelper helper) throws IOException {
ArrayList list = new ArrayList();
// Hack should be remove when Elf is clean
helper.getElf().setCppFilter(false);
Addr2line addr2line = getAddr2line();
CPPFilt cppfilt = getCPPFilt();