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Code Issues Wiki Activity

Support DWARF attribute form DW_FORM_strx1

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This commit is contained in:
John Dallaway 2025-05-03 19:16:21 +01:00
parent 4f39107b14
commit 6c53fd8bc3
5 changed files with 76 additions and 45 deletions
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34
core/org.eclipse.cdt.core/.settings/.api_filters
View file

@ -1,44 +1,28 @@
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<component id="org.eclipse.cdt.core" version="2">
<resource path="utils/org/eclipse/cdt/utils/coff/Coff64.java" type="org.eclipse.cdt.utils.coff.Coff64$SectionHeader">
<resource path="utils/org/eclipse/cdt/utils/debug/dwarf/DwarfConstants.java" type="org.eclipse.cdt.utils.debug.dwarf.DwarfConstants">
<filter id="336658481">
<message_arguments>
<message_argument value="org.eclipse.cdt.utils.coff.Coff64.SectionHeader"/>
<message_argument value="STYP_MEM_DISCARDABLE"/>
<message_argument value="org.eclipse.cdt.utils.debug.dwarf.DwarfConstants"/>
<message_argument value="DW_AT_str_offsets_base"/>
</message_arguments>
</filter>
<filter id="336658481">
<message_arguments>
<message_argument value="org.eclipse.cdt.utils.coff.Coff64.SectionHeader"/>
<message_argument value="STYP_MEM_WRITE"/>
</message_arguments>
</filter>
</resource>
<resource path="utils/org/eclipse/cdt/utils/coff/Coff64.java" type="org.eclipse.cdt.utils.coff.Coff64$Symbol">
<filter id="336658481">
<message_arguments>
<message_argument value="org.eclipse.cdt.utils.coff.Coff64.Symbol"/>
<message_argument value="SC_EXTERNAL"/>
</message_arguments>
</filter>
</resource>
<resource path="utils/org/eclipse/cdt/utils/elf/Elf.java" type="org.eclipse.cdt.utils.elf.Elf$ELFhdr">
<filter id="336658481">
<message_arguments>
<message_argument value="org.eclipse.cdt.utils.elf.Elf.ELFhdr"/>
<message_argument value="EM_AVR32"/>
<message_argument value="org.eclipse.cdt.utils.debug.dwarf.DwarfConstants"/>
<message_argument value="DW_FORM_data16"/>
</message_arguments>
</filter>
<filter id="336658481">
<message_arguments>
<message_argument value="org.eclipse.cdt.utils.elf.Elf.ELFhdr"/>
<message_argument value="EM_MICROBLAZE"/>
<message_argument value="org.eclipse.cdt.utils.debug.dwarf.DwarfConstants"/>
<message_argument value="DW_FORM_strx1"/>
</message_arguments>
</filter>
<filter id="336658481">
<message_arguments>
<message_argument value="org.eclipse.cdt.utils.elf.Elf.ELFhdr"/>
<message_argument value="EM_V800"/>
<message_argument value="org.eclipse.cdt.utils.debug.dwarf.DwarfConstants"/>
<message_argument value="DW_LNCT_MD5"/>
</message_arguments>
</filter>
</resource>

2
core/org.eclipse.cdt.core/META-INF/MANIFEST.MF
View file

@ -2,7 +2,7 @@ Manifest-Version: 1.0
Bundle-ManifestVersion: 2
Bundle-Name: %pluginName
Bundle-SymbolicName: org.eclipse.cdt.core; singleton:=true
Bundle-Version: 9.0.0.qualifier
Bundle-Version: 9.1.0.qualifier
Bundle-Activator: org.eclipse.cdt.core.CCorePlugin
Bundle-Vendor: %providerName
Bundle-Localization: plugin

13
core/org.eclipse.cdt.core/utils/org/eclipse/cdt/utils/debug/dwarf/Dwarf.java
View file

@ -1,5 +1,5 @@
/*******************************************************************************
* Copyright (c) 2000, 2024 QNX Software Systems and others.
* Copyright (c) 2000, 2025 QNX Software Systems and others.
*
* This program and the accompanying materials
* are made available under the terms of the Eclipse Public License 2.0
@ -15,6 +15,7 @@
* John Dallaway - Support DW_FORM_line_strp (#198)
* John Dallaway - Support DW_FORM_implicit_const (#443)
* Alexander Fedorov (ArSysOp) - fix resource leak (#693)
* John Dallaway - Support DW_FORM_strx1 (#1135)
*******************************************************************************/
package org.eclipse.cdt.utils.debug.dwarf;
@ -52,6 +53,7 @@ public class Dwarf implements AutoCloseable {
final static String DWARF_DEBUG_LOC = ".debug_loc"; //$NON-NLS-1$
final static String DWARF_DEBUG_PUBNAMES = ".debug_pubnames"; //$NON-NLS-1$
final static String DWARF_DEBUG_STR = ".debug_str"; //$NON-NLS-1$
final static String DWARF_DEBUG_STR_OFFSETS = ".debug_str_offsets"; //$NON-NLS-1$
final static String DWARF_DEBUG_FUNCNAMES = ".debug_funcnames"; //$NON-NLS-1$
final static String DWARF_DEBUG_TYPENAMES = ".debug_typenames"; //$NON-NLS-1$
final static String DWARF_DEBUG_VARNAMES = ".debug_varnames"; //$NON-NLS-1$
@ -797,6 +799,10 @@ public class Dwarf implements AutoCloseable {
}
break;
case DwarfConstants.DW_FORM_strx1:
obj = Integer.valueOf(Byte.toUnsignedInt(in.get()));
break;
case DwarfConstants.DW_FORM_ref1:
obj = Byte.valueOf(in.get());
break;
@ -859,7 +865,8 @@ public class Dwarf implements AutoCloseable {
return obj;
}
void processDebugInfoEntry(IDebugEntryRequestor requestor, AbbreviationEntry entry, List<AttributeValue> list) {
void processDebugInfoEntry(IDebugEntryRequestor requestor, AbbreviationEntry entry, List<AttributeValue> list)
throws IOException {
int len = list.size();
int tag = (int) entry.tag;
if (printEnabled)
@ -1015,7 +1022,7 @@ public class Dwarf implements AutoCloseable {
requestor.exitFunction(highPC);
}
void processCompileUnit(IDebugEntryRequestor requestor, List<AttributeValue> list) {
void processCompileUnit(IDebugEntryRequestor requestor, List<AttributeValue> list) throws IOException {
if (currentCU != null) {
requestor.exitCompilationUnit(currentCU.highPC);
}

10
core/org.eclipse.cdt.core/utils/org/eclipse/cdt/utils/debug/dwarf/DwarfConstants.java
View file

@ -1,5 +1,5 @@
/*******************************************************************************
* Copyright (c) 2000, 2023 QNX Software Systems and others.
* Copyright (c) 2000, 2025 QNX Software Systems and others.
*
* This program and the accompanying materials
* are made available under the terms of the Eclipse Public License 2.0
@ -148,6 +148,8 @@ public class DwarfConstants {
public final static int DW_AT_variable_parameter = 0x4b;
public final static int DW_AT_virtuality = 0x4c;
public final static int DW_AT_vtable_elem_location = 0x4d;
/** @since 9.1 */
public final static int DW_AT_str_offsets_base = 0x72;
public final static int DW_AT_lo_user = 0x2000;
public final static int DW_AT_MIPS_fde = 0x2001;
public final static int DW_AT_MIPS_loop_begin = 0x2002;
@ -209,6 +211,8 @@ public class DwarfConstants {
* @since 5.7
*/
public final static int DW_FORM_flag_present = 0x19;
/** @since 9.1 */
public final static int DW_FORM_data16 = 0x1e;
/**
* @since 8.1
*/
@ -221,6 +225,8 @@ public class DwarfConstants {
* @since 8.3
*/
public final static int DW_FORM_implicit_const = 0x21;
/** @since 9.1 */
public final static int DW_FORM_strx1 = 0x25;
/* Extensions for Fission. See http://gcc.gnu.org/wiki/DebugFission. */
/**
* @since 5.7
@ -250,6 +256,8 @@ public class DwarfConstants {
* @since 8.3
*/
public final static int DW_LNCT_directory_index = 0x02; /* Index to directories entry */
/** @since 9.1 */
public final static int DW_LNCT_MD5 = 0x05; /* MD5 digest */
/* DWARF location operation encodings. */
public final static int DW_OP_addr = 0x03; /* Constant address. */

62
core/org.eclipse.cdt.core/utils/org/eclipse/cdt/utils/debug/dwarf/DwarfReader.java
View file

@ -1,5 +1,5 @@
/*******************************************************************************
* Copyright (c) 2007, 2023 Nokia and others.
* Copyright (c) 2007, 2025 Nokia and others.
*
* This program and the accompanying materials
* are made available under the terms of the Eclipse Public License 2.0
@ -13,7 +13,7 @@
* Ling Wang (Nokia) bug 201000
* Serge Beauchamp (Freescale Semiconductor) - Bug 421070
* Red Hat Inc. - add debuginfo and macro section support
* John Dallaway - support DWARF v5 content form data (#443)
* John Dallaway - support DWARF v5 content form data (#443, #1135)
*******************************************************************************/
package org.eclipse.cdt.utils.debug.dwarf;
@ -37,6 +37,7 @@ import org.eclipse.cdt.utils.coff.PE64;
import org.eclipse.cdt.utils.debug.IDebugEntryRequestor;
import org.eclipse.cdt.utils.elf.Elf;
import org.eclipse.cdt.utils.elf.Elf.Section;
import org.eclipse.core.runtime.ILog;
import org.eclipse.core.runtime.IPath;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.core.runtime.Path;
@ -50,7 +51,7 @@ public class DwarfReader extends Dwarf implements ISymbolReader, ICompileOptions
// These are sections that need be parsed to get the source file list.
final static String[] DWARF_SectionsToParse = { DWARF_DEBUG_INFO, DWARF_DEBUG_LINE, DWARF_DEBUG_ABBREV,
DWARF_DEBUG_STR, // this is optional. Some compilers don't generate it.
DWARF_DEBUG_MACRO, DWARF_DEBUG_LINE_STR };
DWARF_DEBUG_MACRO, DWARF_DEBUG_LINE_STR, DWARF_DEBUG_STR_OFFSETS };
final static String[] DWARF_ALT_SectionsToParse = { DWARF_DEBUG_STR, DWARF_DEBUG_MACRO };
@ -368,8 +369,8 @@ public class DwarfReader extends Dwarf implements ISymbolReader, ICompileOptions
data.get(dcf_count);
List<ContentForm> directoryContentForms = new ArrayList<>();
for (int fmt = 0; fmt < dcf_count[0]; fmt++) {
ContentForm def = readContentForm(data);
directoryContentForms.add(def);
ContentForm dcf = readContentForm(data);
directoryContentForms.add(dcf);
}
// read directories
@ -386,7 +387,10 @@ public class DwarfReader extends Dwarf implements ISymbolReader, ICompileOptions
dir = new Path(cuCompDir).append(path);
}
directories.add(dir.toString());
} // TODO: support other DW_LNCT_path forms
} else {
ILog.get().warn(String.format("DWARF directory content 0x%x form 0x%x not handled", //$NON-NLS-1$
contentForm.lnct, contentForm.form));
}
}
}
@ -395,8 +399,8 @@ public class DwarfReader extends Dwarf implements ISymbolReader, ICompileOptions
data.get(fncf_count);
List<ContentForm> fileNameContentForms = new ArrayList<>();
for (int fmt = 0; fmt < fncf_count[0]; fmt++) {
ContentForm fnef = readContentForm(data);
fileNameContentForms.add(fnef);
ContentForm fncf = readContentForm(data);
fileNameContentForms.add(fncf);
}
// read file names
@ -409,12 +413,17 @@ public class DwarfReader extends Dwarf implements ISymbolReader, ICompileOptions
&& (DwarfConstants.DW_LNCT_path == contentForm.lnct)) {
long offset = readOffset(data, offsetSize);
filename = getPathInLineStr(offset);
} // TODO: support other DW_LNCT_path forms
if ((DwarfConstants.DW_FORM_udata == contentForm.form)
} else if ((DwarfConstants.DW_FORM_udata == contentForm.form)
&& (DwarfConstants.DW_LNCT_directory_index == contentForm.lnct)) {
long directory_index = read_unsigned_leb128(data);
directory = directories.get((int) directory_index);
} // TODO: support other DW_LNCT_directory_index forms
} else if ((DwarfConstants.DW_FORM_data16 == contentForm.form)
&& (DwarfConstants.DW_LNCT_MD5 == contentForm.lnct)) {
data.get(new byte[16]); // skip MD5 digest
} else {
ILog.get().warn(String.format("DWARF file content 0x%x form 0x%x not handled", //$NON-NLS-1$
contentForm.lnct, contentForm.form));
}
}
if ((null != directory) && (null != filename)) {
addSourceFile(directory, filename);
@ -704,8 +713,8 @@ public class DwarfReader extends Dwarf implements ISymbolReader, ICompileOptions
// Override parent: only handle TAG_Compile_Unit.
@Override
void processDebugInfoEntry(IDebugEntryRequestor requestor, AbbreviationEntry entry,
List<Dwarf.AttributeValue> list) {
void processDebugInfoEntry(IDebugEntryRequestor requestor, AbbreviationEntry entry, List<Dwarf.AttributeValue> list)
throws IOException {
int tag = (int) entry.tag;
switch (tag) {
case DwarfConstants.DW_TAG_compile_unit:
@ -720,10 +729,14 @@ public class DwarfReader extends Dwarf implements ISymbolReader, ICompileOptions
// Just get the file name of the CU.
// Argument "requestor" is ignored.
@Override
void processCompileUnit(IDebugEntryRequestor requestor, List<AttributeValue> list) {
void processCompileUnit(IDebugEntryRequestor requestor, List<AttributeValue> list) throws IOException {
String cuName, cuCompDir;
int stmtList = -1;
ByteBuffer strings = dwarfSections.get(DWARF_DEBUG_STR);
ByteBuffer offsets = dwarfSections.get(DWARF_DEBUG_STR_OFFSETS);
byte offsetSize = (offsets != null) ? readInitialLengthField(offsets).offsetSize : -1;
long offsetsBase = -1L;
cuName = cuCompDir = ""; //$NON-NLS-1$
@ -736,11 +749,30 @@ public class DwarfReader extends Dwarf implements ISymbolReader, ICompileOptions
cuName = (String) av.value;
break;
case DwarfConstants.DW_AT_comp_dir:
cuCompDir = (String) av.value;
if ((av.attribute.form == DwarfConstants.DW_FORM_strp)
|| (av.attribute.form == DwarfConstants.DW_FORM_line_strp)) {
cuCompDir = (String) av.value;
} else if ((av.attribute.form == DwarfConstants.DW_FORM_strx1) && (offsets != null)
&& (offsetsBase != -1L)) {
int index = ((Number) av.value).intValue();
// read the pointer into .debug_str from .debug_str_offsets
long offset = offsetsBase + (index * offsetSize);
offsets.position((int) offset);
long strp = readOffset(offsets, offsetSize);
// read the string from .debug_str
strings.position((int) strp);
cuCompDir = readString(strings);
} else {
ILog.get().warn(String.format("DW_AT_comp_dir form 0x%x not handled", av.attribute.form)); //$NON-NLS-1$
}
break;
case DwarfConstants.DW_AT_stmt_list:
stmtList = ((Number) av.value).intValue();
break;
case DwarfConstants.DW_AT_str_offsets_base:
// read the base of all offsets into .debug_str_offsets
offsetsBase = (offsetSize == 8) ? ((Number) av.value).longValue() : ((Number) av.value).intValue();
break;
default:
break;
}