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Work on the Stabs debug format implementation.

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This commit is contained in:
Alain Magloire 2004-01-09 22:12:07 +00:00
parent 0bde2ce901
commit 8c26ef7560
2 changed files with 61 additions and 59 deletions
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61
core/org.eclipse.cdt.core/utils/org/eclipse/cdt/utils/stabs/Stabs.java
View file

@ -13,6 +13,7 @@ package org.eclipse.cdt.utils.stabs;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import org.eclipse.cdt.utils.elf.Elf;
@ -22,17 +23,33 @@ public class Stabs {
byte[] stabData;
byte[] stabstrData;
boolean isLe;
List entries;
Entry[] entries;
public class Entry {
public class Entry implements Comparable{
public long addr;
public long size;
public int startLine;
public String string;
public Entry(String s) {
string = s;
}
public int compareTo(Object obj) {
long thisVal = 0;
long anotherVal = 0;
if (obj instanceof Entry) {
Entry entry = (Entry) obj;
thisVal = this.addr;
anotherVal = entry.addr;
} else if (obj instanceof Long) {
Long val = (Long) obj;
anotherVal = val.longValue();
thisVal = (long) this.addr;
}
return (thisVal < anotherVal ? -1 : (thisVal == anotherVal ? 0 : 1));
}
public String toString() {
StringBuffer buf = new StringBuffer();
buf.append("Name: ").append(string).append("\n");
@ -201,14 +218,31 @@ public class Stabs {
if (entries == null) {
parse();
}
Entry[] array = new Entry[entries.size()];
entries.toArray(array);
return array;
return entries;
}
public Entry getEntry(long addr) throws IOException {
if (entries == null) {
parse();
}
int insertion = Arrays.binarySearch(entries, new Long(addr));
if (insertion >= 0) {
return entries[insertion];
}
if (insertion == -1) {
return null;
}
insertion = -insertion - 1;
Entry entry = entries[insertion - 1];
if (addr < (entry.addr + entry.size)) {
return entries[insertion - 1];
}
return null;
}
void parse() throws IOException {
entries = new ArrayList();
List list = new ArrayList();
long nstab = stabData.length / StabConstant.SIZE;
int i, offset, bracket;
@ -325,7 +359,7 @@ public class Stabs {
variable.startLine = desc;
variable.function = currentFunction;
variable.filename = currentFile;
entries.add(variable);
list.add(variable);
if (currentFunction != null) {
currentFunction.variables.add(variable);
}
@ -336,6 +370,7 @@ public class Stabs {
currentFunction.endLine = currentFunction.startLine = desc;
} else {
currentFunction.endLine = desc;
currentFunction.size = value;
}
currentFunction.lines.add(new Integer(desc));
}
@ -349,7 +384,7 @@ public class Stabs {
currentFunction.addr = value;
currentFunction.startLine = desc;
currentFunction.filename = currentFile;
entries.add(currentFunction);
list.add(currentFunction);
break;
case StabConstant.N_LBRAC :
bracket++;
@ -360,7 +395,7 @@ public class Stabs {
case StabConstant.N_BINCL :
Include include = new Include(name);
include.index = includeCount++;
entries.add(include);
list.add(include);
break;
case StabConstant.N_EINCL :
break;
@ -379,11 +414,15 @@ public class Stabs {
//System.out.println(" " + i + "\t" + Stab.type2String(type) + "\t" + other + "\t\t" +
// desc + "\t" + Long.toHexString(value) + "\t" + + stroff + "\t\t" +name);
}
entries = new Entry[list.size()];
list.toArray(entries);
list.clear();
Arrays.sort(entries);
}
public void print() {
for (int i = 0; i < entries.size(); i++) {
Entry entry = (Entry) entries.get(i);
for (int i = 0; i < entries.length; i++) {
Entry entry = entries[i];
System.out.println(entry);
}
}

59
core/org.eclipse.cdt.core/utils/org/eclipse/cdt/utils/stabs/StabsAddr2line.java
View file

@ -23,8 +23,6 @@ import org.eclipse.cdt.utils.elf.Elf;
public class StabsAddr2line {
Stabs stabs;
long lastAddress;
Stabs.Entry entry;
public StabsAddr2line(byte[] stab, byte[] stabstr, boolean le) throws IOException {
stabs = new Stabs(stab, stabstr, le);
@ -44,17 +42,8 @@ public class StabsAddr2line {
* @see IAddr2line#getStartLine(long)
*/
public int getStartLine(long address) throws IOException {
if (address != lastAddress || entry == null) {
Stabs.Entry[] entries = stabs.getEntries();
for (int i = 0; i < entries.length; i++) {
if (entries[i].addr == address) {
lastAddress = address;
entry = entries[i];
break;
}
}
}
if (address == lastAddress && entry != null) {
Stabs.Entry entry = stabs.getEntry(address);
if (entry != null) {
return entry.startLine;
}
return 0;
@ -66,17 +55,8 @@ public class StabsAddr2line {
* @see IAddr2line#getEndLine(long)
*/
public int getEndLine(long address) throws IOException {
if (address != lastAddress || entry == null) {
Stabs.Entry[] entries = stabs.getEntries();
for (int i = 0; i < entries.length; i++) {
if (entries[i].addr == address) {
lastAddress = address;
entry = entries[i];
break;
}
}
}
if (address == lastAddress && entry != null) {
Stabs.Entry entry = stabs.getEntry(address);
if (entry != null) {
if (entry instanceof Stabs.Function) {
return ((Stabs.Function)entry).endLine;
}
@ -91,17 +71,8 @@ public class StabsAddr2line {
* @see IAddr2line#getFunction(long)
*/
public String getFunction(long address) throws IOException {
if (address != lastAddress || entry == null) {
Stabs.Entry[] entries = stabs.getEntries();
for (int i = 0; i < entries.length; i++) {
if (entries[i].addr == address) {
lastAddress = address;
entry = entries[i];
break;
}
}
}
if (address == lastAddress && entry != null) {
Stabs.Entry entry = stabs.getEntry(address);
if (entry != null) {
return entry.string;
}
return null;
@ -113,17 +84,8 @@ public class StabsAddr2line {
* @see IAddr2line#getFileName(long)
*/
public String getFileName(long address) throws IOException {
if (address != lastAddress || entry == null) {
Stabs.Entry[] entries = stabs.getEntries();
for (int i = 0; i < entries.length; i++) {
if (entries[i].addr == address) {
lastAddress = address;
entry = entries[i];
break;
}
}
}
if (address == lastAddress && entry instanceof Stabs.LocatableEntry) {
Stabs.Entry entry = stabs.getEntry(address);
if (entry instanceof Stabs.LocatableEntry) {
return ((Stabs.LocatableEntry)entry).filename;
}
return null;
@ -150,11 +112,12 @@ public class StabsAddr2line {
byte[] strtab = stabstr.loadSectionData();
StabsAddr2line addr2line = new StabsAddr2line(array, strtab, true);
long address = Integer.decode(args[1]).longValue();
int line = addr2line.getStartLine(address);
int startLine = addr2line.getStartLine(address);
int endLine = addr2line.getEndLine(address);
String function = addr2line.getFunction(address);
String filename = addr2line.getFileName(address);
System.out.println(Long.toHexString(address));
System.out.println(filename + ":" + function + ":" + line);
System.out.println(filename + ":" + function + ":" + startLine + ":" + endLine);
}
} catch (IOException e) {
e.printStackTrace();