eliott/ghidra
1
0
Fork 0
mirror of https://github.com/NationalSecurityAgency/ghidra.git synced 2026-04-25 17:25:17 +02:00
Code Issues Packages Projects Releases Wiki Activity

Merge remote-tracking branch 'origin/GP-5931_dev747368_fix_dwarf64_offsets--SQUASHED'

Browse Source
This commit is contained in:
Ryan Kurtz
2025-08-15 06:01:23 -04:00
parent 98b938cc65 46b0b17c74
commit 70e28cf706
4 changed files with 31 additions and 17 deletions
Download Patch File Download Diff File Expand all files Collapse all files

10
Ghidra/Features/Base/src/main/java/ghidra/app/util/bin/format/dwarf/attribs/DWARFForm.java
View File

@@ -177,8 +177,8 @@ public enum DWARFForm {
DWARFForm indirectForm = DWARFForm.of(indirectFormInt);
DWARFAttributeDef<?> indirectAS = context.def().withForm(indirectForm);
DWARFFormContext indirectContext =
new DWARFFormContext(context.reader(), context.compUnit(), indirectAS);
DWARFFormContext indirectContext = new DWARFFormContext(context.reader(),
context.compUnit(), indirectAS, context.dwarfIntSize());
long indirectSize = indirectForm.getSize(indirectContext);
return firstSize + indirectSize;
@@ -189,8 +189,8 @@ public enum DWARFForm {
int indirectFormInt = context.reader().readNextUnsignedVarIntExact(LEB128::unsigned);
DWARFForm indirectForm = DWARFForm.of(indirectFormInt);
DWARFAttributeDef<?> indirectAS = context.def().withForm(indirectForm);
DWARFFormContext indirectContext =
new DWARFFormContext(context.reader(), context.compUnit(), indirectAS);
DWARFFormContext indirectContext = new DWARFFormContext(context.reader(),
context.compUnit(), indirectAS, context.dwarfIntSize());
return indirectForm.readValue(indirectContext);
}
},
@@ -335,7 +335,7 @@ public enum DWARFForm {
public long getSize(DWARFFormContext context) throws IOException {
switch (size) {
case DWARF_INTSIZE:
return context.compUnit().getIntSize();
return context.dwarfIntSize();
case LEB128_SIZE:
return context.reader().readNext(LEB128::getLength);
case DYNAMIC_SIZE:

25
Ghidra/Features/Base/src/main/java/ghidra/app/util/bin/format/dwarf/attribs/DWARFFormContext.java
View File

@@ -16,7 +16,8 @@
package ghidra.app.util.bin.format.dwarf.attribs;
import ghidra.app.util.bin.BinaryReader;
import ghidra.app.util.bin.format.dwarf.*;
import ghidra.app.util.bin.format.dwarf.DWARFCompilationUnit;
import ghidra.app.util.bin.format.dwarf.DWARFProgram;
/**
* Context given to the {@link DWARFForm#readValue(DWARFFormContext)} method to enable it to
@@ -25,15 +26,27 @@ import ghidra.app.util.bin.format.dwarf.*;
* @param reader {@link BinaryReader}
* @param compUnit {@link DWARFCompilationUnit}
* @param def {@link DWARFAttributeDef}
* @param dwarfIntSize size of dwarf serialization ints, either 4 (32 bit dwarf) or
* 8 (64 bit dwarf). Can be different from compUnit's intSize if this context is being used
* to read values from a non-".debuginfo" section that has unit headers that specify an
* independent intSize.
*/
public record DWARFFormContext(BinaryReader reader, DWARFCompilationUnit compUnit,
DWARFAttributeDef<?> def) {
DWARFAttributeDef<?> def, int dwarfIntSize) {
/**
* Creates a new DWARFFormContext, using the compUnit's int size
*
* @param reader stream that will be used to read the dwarf form value
* @param compUnit {@link DWARFCompilationUnit} that contains the value
* @param def identity info about the attribute being read
*/
public DWARFFormContext(BinaryReader reader, DWARFCompilationUnit compUnit,
DWARFAttributeDef<?> def) {
this(reader, compUnit, def, compUnit.getIntSize());
}
DWARFProgram dprog() {
return compUnit.getProgram();
}
int dwarfIntSize() {
return compUnit.getIntSize();
}
}

5
Ghidra/Features/Base/src/main/java/ghidra/app/util/bin/format/dwarf/line/DWARFFile.java
View File

@@ -59,12 +59,13 @@ public class DWARFFile {
* @param reader BinaryReader
* @param defs similar to a DIE's attributespec, a list of DWARFForms that define how values
* will be deserialized from the stream
* @param dwarfIntSize size of serialized dwarf ints (might be different than the CU's dwarfIntSize)
* @param cu {@link DWARFCompilationUnit}
* @return new DWARFFile
* @throws IOException if error reading
*/
public static DWARFFile readV5(BinaryReader reader, List<DWARFLineContentType.Def> defs,
DWARFCompilationUnit cu) throws IOException {
int dwarfIntSize, DWARFCompilationUnit cu) throws IOException {
String name = null;
int directoryIndex = -1;
@@ -72,7 +73,7 @@ public class DWARFFile {
long length = 0;
byte[] md5 = null;
for (DWARFLineContentType.Def def : defs) {
DWARFFormContext context = new DWARFFormContext(reader, cu, def);
DWARFFormContext context = new DWARFFormContext(reader, cu, def, dwarfIntSize);
DWARFAttributeValue val = def.getAttributeForm().readValue(context);
switch (def.getAttributeId()) {

4
Ghidra/Features/Base/src/main/java/ghidra/app/util/bin/format/dwarf/line/DWARFLine.java
View File

@@ -168,7 +168,7 @@ public class DWARFLine {
// read the directories, which are defined the same way files are
int directories_count = reader.readNextUnsignedVarIntExact(LEB128::unsigned);
for (int i = 0; i < directories_count; i++) {
DWARFFile dir = DWARFFile.readV5(reader, dirFormatDefs, cu);
DWARFFile dir = DWARFFile.readV5(reader, dirFormatDefs, result.intSize, cu);
dir = fixupDir(dir, defaultCompDir);
result.directories.add(dir);
}
@@ -182,7 +182,7 @@ public class DWARFLine {
int file_names_count = reader.readNextUnsignedVarIntExact(LEB128::unsigned);
for (int i = 0; i < file_names_count; i++) {
DWARFFile dir = DWARFFile.readV5(reader, fileFormatDefs, cu);
DWARFFile dir = DWARFFile.readV5(reader, fileFormatDefs, result.intSize, cu);
result.files.add(dir);
}
}