Added DWARF support to Breakpad client. Thanks to Google for open sourcing their DWARF code!

Modified dump_syms to detect dSYM bundles or a binary with DWARF data appropriately, and convert data from DWARF reader to dump_syms native structures

R=danny.berlin (original writer of DWARF code)



git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@286 4c0a9323-5329-0410-9bdc-e9ce6186880e

21 files changed, 8525 insertions, 31 deletions

diff --git a/src/client/mac/handler/minidump_test.xcodeproj/project.pbxproj b/src/client/mac/handler/minidump_test.xcodeproj/project.pbxproj
index c0b09e8b..9a84a0e0 100644
--- a/src/client/mac/handler/minidump_test.xcodeproj/project.pbxproj
+++ b/src/client/mac/handler/minidump_test.xcodeproj/project.pbxproj
@@ -49,6 +49,18 @@
 		D2F6511E0BEF973600920385 /* macho_id.cc in Sources */ = {isa = PBXBuildFile; fileRef = D2F650FC0BEF947200920385 /* macho_id.cc */; };
 		D2F6511F0BEF973900920385 /* macho_utilities.cc in Sources */ = {isa = PBXBuildFile; fileRef = D2F650FE0BEF947200920385 /* macho_utilities.cc */; };
 		D2F651210BEF975400920385 /* macho_walker.cc in Sources */ = {isa = PBXBuildFile; fileRef = D2F6510C0BEF94EB00920385 /* macho_walker.cc */; };
+		F93A887D0E8B4C8C0026AF89 /* macho_walker.cc in Sources */ = {isa = PBXBuildFile; fileRef = D2F6510C0BEF94EB00920385 /* macho_walker.cc */; };
+		F93A887E0E8B4C8C0026AF89 /* macho_id.cc in Sources */ = {isa = PBXBuildFile; fileRef = D2F650FC0BEF947200920385 /* macho_id.cc */; };
+		F93A887F0E8B4C8C0026AF89 /* macho_utilities.cc in Sources */ = {isa = PBXBuildFile; fileRef = D2F650FE0BEF947200920385 /* macho_utilities.cc */; };
+		F93A88800E8B4C8C0026AF89 /* file_id.cc in Sources */ = {isa = PBXBuildFile; fileRef = D2F650FA0BEF947200920385 /* file_id.cc */; };
+		F93A88860E8B4C9A0026AF89 /* dwarftests.mm in Sources */ = {isa = PBXBuildFile; fileRef = F9721F310E8B07E800D7E813 /* dwarftests.mm */; };
+		F93A88870E8B4C9A0026AF89 /* dump_syms.mm in Sources */ = {isa = PBXBuildFile; fileRef = F9721F390E8B0D0D00D7E813 /* dump_syms.mm */; };
+		F93A88880E8B4C9A0026AF89 /* bytereader.cc in Sources */ = {isa = PBXBuildFile; fileRef = F9721F760E8B0DC700D7E813 /* bytereader.cc */; };
+		F93A88890E8B4C9A0026AF89 /* dwarf2reader.cc in Sources */ = {isa = PBXBuildFile; fileRef = F9721F770E8B0DC700D7E813 /* dwarf2reader.cc */; };
+		F93A888A0E8B4C9A0026AF89 /* functioninfo.cc in Sources */ = {isa = PBXBuildFile; fileRef = F9721F780E8B0DC700D7E813 /* functioninfo.cc */; };
+		F93A888B0E8B4C9A0026AF89 /* md5.c in Sources */ = {isa = PBXBuildFile; fileRef = F9721FA80E8B0E4800D7E813 /* md5.c */; };
+		F9721F6C0E8B0D7000D7E813 /* Cocoa.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = F9721F6B0E8B0D7000D7E813 /* Cocoa.framework */; };
+		F9721FA20E8B0E2300D7E813 /* SenTestingKit.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = F9721FA10E8B0E2300D7E813 /* SenTestingKit.framework */; };
 		F982089C0DB3280D0017AECA /* breakpad_nlist_test.cc in Sources */ = {isa = PBXBuildFile; fileRef = F982089B0DB3280D0017AECA /* breakpad_nlist_test.cc */; };
 		F98208A30DB32CAE0017AECA /* breakpad_nlist_64.cc in Sources */ = {isa = PBXBuildFile; fileRef = F98208A10DB32CAE0017AECA /* breakpad_nlist_64.cc */; };
 		F9AE5B390DBFDBDB00505983 /* dynamic_images.cc in Sources */ = {isa = PBXBuildFile; fileRef = D2F651070BEF949A00920385 /* dynamic_images.cc */; };
@@ -114,6 +126,18 @@
 		D2F6510D0BEF94EB00920385 /* macho_walker.h */ = {isa = PBXFileReference; fileEncoding = 30; lastKnownFileType = sourcecode.c.h; name = macho_walker.h; path = ../../../common/mac/macho_walker.h; sourceTree = SOURCE_ROOT; };
 		F917C4F70E03265A00F86017 /* breakpad_exc_server.c */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.c; path = breakpad_exc_server.c; sourceTree = "<group>"; };
 		F917C4F80E03265A00F86017 /* breakpad_exc_server.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = breakpad_exc_server.h; sourceTree = "<group>"; };
+		F93A88750E8B4C700026AF89 /* octestcases.octest */ = {isa = PBXFileReference; explicitFileType = wrapper.cfbundle; includeInIndex = 0; path = octestcases.octest; sourceTree = BUILT_PRODUCTS_DIR; };
+		F93A88760E8B4C700026AF89 /* obj-cTestCases-Info.plist */ = {isa = PBXFileReference; lastKnownFileType = text.plist.xml; path = "obj-cTestCases-Info.plist"; sourceTree = "<group>"; };
+		F9721F300E8B07E800D7E813 /* dwarftests.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = dwarftests.h; sourceTree = "<group>"; };
+		F9721F310E8B07E800D7E813 /* dwarftests.mm */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.objcpp; path = dwarftests.mm; sourceTree = "<group>"; };
+		F9721F380E8B0CFC00D7E813 /* dump_syms.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; name = dump_syms.h; path = ../../../common/mac/dump_syms.h; sourceTree = SOURCE_ROOT; };
+		F9721F390E8B0D0D00D7E813 /* dump_syms.mm */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.objcpp; name = dump_syms.mm; path = ../../../common/mac/dump_syms.mm; sourceTree = SOURCE_ROOT; };
+		F9721F6B0E8B0D7000D7E813 /* Cocoa.framework */ = {isa = PBXFileReference; lastKnownFileType = wrapper.framework; name = Cocoa.framework; path = /System/Library/Frameworks/Cocoa.framework; sourceTree = "<absolute>"; };
+		F9721F760E8B0DC700D7E813 /* bytereader.cc */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; name = bytereader.cc; path = ../../../common/mac/dwarf/bytereader.cc; sourceTree = SOURCE_ROOT; };
+		F9721F770E8B0DC700D7E813 /* dwarf2reader.cc */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; name = dwarf2reader.cc; path = ../../../common/mac/dwarf/dwarf2reader.cc; sourceTree = SOURCE_ROOT; };
+		F9721F780E8B0DC700D7E813 /* functioninfo.cc */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; name = functioninfo.cc; path = ../../../common/mac/dwarf/functioninfo.cc; sourceTree = SOURCE_ROOT; };
+		F9721FA10E8B0E2300D7E813 /* SenTestingKit.framework */ = {isa = PBXFileReference; lastKnownFileType = wrapper.framework; name = SenTestingKit.framework; path = /System/Library/Frameworks/SenTestingKit.framework; sourceTree = "<absolute>"; };
+		F9721FA80E8B0E4800D7E813 /* md5.c */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.c; name = md5.c; path = ../../../common/md5.c; sourceTree = SOURCE_ROOT; };
 		F982089A0DB3280D0017AECA /* breakpad_nlist_test.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = breakpad_nlist_test.h; sourceTree = "<group>"; };
 		F982089B0DB3280D0017AECA /* breakpad_nlist_test.cc */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; path = breakpad_nlist_test.cc; sourceTree = "<group>"; };
 		F98208A10DB32CAE0017AECA /* breakpad_nlist_64.cc */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; path = breakpad_nlist_64.cc; sourceTree = "<group>"; };
@@ -150,6 +174,13 @@
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 		};
+		F93A88720E8B4C700026AF89 /* Frameworks */ = {
+			isa = PBXFrameworksBuildPhase;
+			buildActionMask = 2147483647;
+			files = (
+			);
+			runOnlyForDeploymentPostprocessing = 0;
+		};
 		F9AE19C00DB04A9500C98454 /* Frameworks */ = {
 			isa = PBXFrameworksBuildPhase;
 			buildActionMask = 2147483647;
@@ -161,6 +192,8 @@
 			isa = PBXFrameworksBuildPhase;
 			buildActionMask = 2147483647;
 			files = (
+				F9721F6C0E8B0D7000D7E813 /* Cocoa.framework in Frameworks */,
+				F9721FA20E8B0E2300D7E813 /* SenTestingKit.framework in Frameworks */,
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 		};
@@ -170,6 +203,12 @@
 		08FB7794FE84155DC02AAC07 /* MinidumpWriter */ = {
 			isa = PBXGroup;
 			children = (
+				F9721FA80E8B0E4800D7E813 /* md5.c */,
+				F9721F760E8B0DC700D7E813 /* bytereader.cc */,
+				F9721F770E8B0DC700D7E813 /* dwarf2reader.cc */,
+				F9721F780E8B0DC700D7E813 /* functioninfo.cc */,
+				F9721F390E8B0D0D00D7E813 /* dump_syms.mm */,
+				F9721F380E8B0CFC00D7E813 /* dump_syms.h */,
 				F917C4F70E03265A00F86017 /* breakpad_exc_server.c */,
 				F917C4F80E03265A00F86017 /* breakpad_exc_server.h */,
 				F98208A10DB32CAE0017AECA /* breakpad_nlist_64.cc */,
@@ -191,6 +230,7 @@
 				1AB674ADFE9D54B511CA2CBB /* Products */,
 				F9AE19B50DB040E300C98454 /* minidump_tests32-Info.plist */,
 				F9AE5B340DBFDBA300505983 /* minidump_tests64-Info.plist */,
+				F93A88760E8B4C700026AF89 /* obj-cTestCases-Info.plist */,
 			);
 			name = MinidumpWriter;
 			sourceTree = "<group>";
@@ -213,6 +253,7 @@
 				9B7CA84E0B1297F200CD3A1D /* unit_test */,
 				F9AE19C30DB04A9500C98454 /* minidump_tests64.cptest */,
 				F9AE5B330DBFDBA300505983 /* minidump_tests32.cptest */,
+				F93A88750E8B4C700026AF89 /* octestcases.octest */,
 			);
 			name = Products;
 			sourceTree = "<group>";
@@ -220,6 +261,8 @@
 		9B37CEEA0AF98EB600FA4BD4 /* Frameworks */ = {
 			isa = PBXGroup;
 			children = (
+				F9721FA10E8B0E2300D7E813 /* SenTestingKit.framework */,
+				F9721F6B0E8B0D7000D7E813 /* Cocoa.framework */,
 				9B37CEEB0AF98ECD00FA4BD4 /* CoreFoundation.framework */,
 			);
 			name = Frameworks;
@@ -252,6 +295,8 @@
 				F982089B0DB3280D0017AECA /* breakpad_nlist_test.cc */,
 				F9C5A4200DB82DD800209C76 /* DynamicImagesTests.h */,
 				F9C5A4210DB82DD800209C76 /* DynamicImagesTests.cc */,
+				F9721F300E8B07E800D7E813 /* dwarftests.h */,
+				F9721F310E8B07E800D7E813 /* dwarftests.mm */,
 			);
 			path = testcases;
 			sourceTree = "<group>";
@@ -309,6 +354,24 @@
 			productReference = 9BD82A9B0B00267E0055103E /* handler_test */;
 			productType = "com.apple.product-type.tool";
 		};
+		F93A88740E8B4C700026AF89 /* obj-c_TestCases */ = {
+			isa = PBXNativeTarget;
+			buildConfigurationList = F93A88790E8B4C700026AF89 /* Build configuration list for PBXNativeTarget "obj-c_TestCases" */;
+			buildPhases = (
+				F93A88700E8B4C700026AF89 /* Resources */,
+				F93A88710E8B4C700026AF89 /* Sources */,
+				F93A88720E8B4C700026AF89 /* Frameworks */,
+				F93A88730E8B4C700026AF89 /* ShellScript */,
+			);
+			buildRules = (
+			);
+			dependencies = (
+			);
+			name = "obj-c_TestCases";
+			productName = octestcases;
+			productReference = F93A88750E8B4C700026AF89 /* octestcases.octest */;
+			productType = "com.apple.product-type.bundle";
+		};
 		F9AE19C20DB04A9500C98454 /* minidump_tests64 */ = {
 			isa = PBXNativeTarget;
 			buildConfigurationList = F9AE19C70DB04AA200C98454 /* Build configuration list for PBXNativeTarget "minidump_tests64" */;
@@ -362,11 +425,19 @@
 				9B7CA84D0B1297F200CD3A1D /* unit_test */,
 				F9AE19C20DB04A9500C98454 /* minidump_tests64 */,
 				F9AE5B320DBFDBA300505983 /* minidump_tests32 */,
+				F93A88740E8B4C700026AF89 /* obj-c_TestCases */,
 			);
 		};
 /* End PBXProject section */
 
 /* Begin PBXResourcesBuildPhase section */
+		F93A88700E8B4C700026AF89 /* Resources */ = {
+			isa = PBXResourcesBuildPhase;
+			buildActionMask = 2147483647;
+			files = (
+			);
+			runOnlyForDeploymentPostprocessing = 0;
+		};
 		F9AE19BE0DB04A9500C98454 /* Resources */ = {
 			isa = PBXResourcesBuildPhase;
 			buildActionMask = 2147483647;
@@ -384,6 +455,19 @@
 /* End PBXResourcesBuildPhase section */
 
 /* Begin PBXShellScriptBuildPhase section */
+		F93A88730E8B4C700026AF89 /* ShellScript */ = {
+			isa = PBXShellScriptBuildPhase;
+			buildActionMask = 2147483647;
+			files = (
+			);
+			inputPaths = (
+			);
+			outputPaths = (
+			);
+			runOnlyForDeploymentPostprocessing = 0;
+			shellPath = /bin/sh;
+			shellScript = "# Run the unit tests in this test bundle.\n\"${SYSTEM_DEVELOPER_DIR}/Tools/RunUnitTests\"\n";
+		};
 		F9AE19C10DB04A9500C98454 /* ShellScript */ = {
 			isa = PBXShellScriptBuildPhase;
 			buildActionMask = 2147483647;
@@ -408,7 +492,7 @@
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 			shellPath = /bin/sh;
-			shellScript = "# Run the unit tests in this test bundle.\n\"${SYSTEM_DEVELOPER_DIR}/Tools/RunUnitTests\"\n";
+			shellScript = "# Run the unit tests in this test bundle.\n\"${SYSTEM_DEVELOPER_DIR}/Tools/RunUnitTests\"\n\n";
 		};
 /* End PBXShellScriptBuildPhase section */
 
@@ -462,6 +546,23 @@
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 		};
+		F93A88710E8B4C700026AF89 /* Sources */ = {
+			isa = PBXSourcesBuildPhase;
+			buildActionMask = 2147483647;
+			files = (
+				F93A88860E8B4C9A0026AF89 /* dwarftests.mm in Sources */,
+				F93A88870E8B4C9A0026AF89 /* dump_syms.mm in Sources */,
+				F93A88880E8B4C9A0026AF89 /* bytereader.cc in Sources */,
+				F93A88890E8B4C9A0026AF89 /* dwarf2reader.cc in Sources */,
+				F93A888A0E8B4C9A0026AF89 /* functioninfo.cc in Sources */,
+				F93A888B0E8B4C9A0026AF89 /* md5.c in Sources */,
+				F93A887D0E8B4C8C0026AF89 /* macho_walker.cc in Sources */,
+				F93A887E0E8B4C8C0026AF89 /* macho_id.cc in Sources */,
+				F93A887F0E8B4C8C0026AF89 /* macho_utilities.cc in Sources */,
+				F93A88800E8B4C8C0026AF89 /* file_id.cc in Sources */,
+			);
+			runOnlyForDeploymentPostprocessing = 0;
+		};
 		F9AE19BF0DB04A9500C98454 /* Sources */ = {
 			isa = PBXSourcesBuildPhase;
 			buildActionMask = 2147483647;
@@ -614,6 +715,62 @@
 			};
 			name = Release;
 		};
+		F93A88770E8B4C700026AF89 /* Debug */ = {
+			isa = XCBuildConfiguration;
+			buildSettings = {
+				ALWAYS_SEARCH_USER_PATHS = NO;
+				COPY_PHASE_STRIP = NO;
+				FRAMEWORK_SEARCH_PATHS = "$(DEVELOPER_LIBRARY_DIR)/Frameworks";
+				GCC_CHAR_IS_UNSIGNED_CHAR = YES;
+				GCC_DYNAMIC_NO_PIC = NO;
+				GCC_ENABLE_FIX_AND_CONTINUE = NO;
+				GCC_ENABLE_OBJC_EXCEPTIONS = YES;
+				GCC_MODEL_TUNING = G5;
+				GCC_OPTIMIZATION_LEVEL = 0;
+				INFOPLIST_FILE = "obj-cTestCases-Info.plist";
+				INSTALL_PATH = "$(USER_LIBRARY_DIR)/Bundles";
+				OTHER_LDFLAGS = (
+					"-lcrypto",
+					"-framework",
+					Cocoa,
+					"-framework",
+					SenTestingKit,
+				);
+				PREBINDING = NO;
+				PRODUCT_NAME = octestcases;
+				USER_HEADER_SEARCH_PATHS = "../../../..//**";
+				WRAPPER_EXTENSION = octest;
+			};
+			name = Debug;
+		};
+		F93A88780E8B4C700026AF89 /* Release */ = {
+			isa = XCBuildConfiguration;
+			buildSettings = {
+				ALWAYS_SEARCH_USER_PATHS = NO;
+				COPY_PHASE_STRIP = YES;
+				DEBUG_INFORMATION_FORMAT = "dwarf-with-dsym";
+				FRAMEWORK_SEARCH_PATHS = "$(DEVELOPER_LIBRARY_DIR)/Frameworks";
+				GCC_CHAR_IS_UNSIGNED_CHAR = YES;
+				GCC_ENABLE_FIX_AND_CONTINUE = NO;
+				GCC_ENABLE_OBJC_EXCEPTIONS = YES;
+				GCC_MODEL_TUNING = G5;
+				INFOPLIST_FILE = "obj-cTestCases-Info.plist";
+				INSTALL_PATH = "$(USER_LIBRARY_DIR)/Bundles";
+				OTHER_LDFLAGS = (
+					"-lcrypto",
+					"-framework",
+					Cocoa,
+					"-framework",
+					SenTestingKit,
+				);
+				PREBINDING = NO;
+				PRODUCT_NAME = octestcases;
+				USER_HEADER_SEARCH_PATHS = "../../../..//**";
+				WRAPPER_EXTENSION = octest;
+				ZERO_LINK = NO;
+			};
+			name = Release;
+		};
 		F9AE19C40DB04A9500C98454 /* Debug */ = {
 			isa = XCBuildConfiguration;
 			buildSettings = {
@@ -697,6 +854,7 @@
 					Carbon,
 					"-framework",
 					CPlusTest,
+					"-lcrypto",
 				);
 				PREBINDING = NO;
 				PRODUCT_NAME = minidump_tests32;
@@ -719,6 +877,7 @@
 				INFOPLIST_FILE = "minidump_tests32-Info.plist";
 				INSTALL_PATH = "$(USER_LIBRARY_DIR)/Bundles";
 				OTHER_LDFLAGS = (
+					"-lcrypto",
 					"-framework",
 					Carbon,
 					"-framework",
@@ -771,6 +930,15 @@
 			defaultConfigurationIsVisible = 0;
 			defaultConfigurationName = Release;
 		};
+		F93A88790E8B4C700026AF89 /* Build configuration list for PBXNativeTarget "obj-c_TestCases" */ = {
+			isa = XCConfigurationList;
+			buildConfigurations = (
+				F93A88770E8B4C700026AF89 /* Debug */,
+				F93A88780E8B4C700026AF89 /* Release */,
+			);
+			defaultConfigurationIsVisible = 0;
+			defaultConfigurationName = Release;
+		};
 		F9AE19C70DB04AA200C98454 /* Build configuration list for PBXNativeTarget "minidump_tests64" */ = {
 			isa = XCConfigurationList;
 			buildConfigurations = (
diff --git a/src/client/mac/handler/obj-cTestCases-Info.plist b/src/client/mac/handler/obj-cTestCases-Info.plist
new file mode 100644
index 00000000..65013556
--- /dev/null
+++ b/src/client/mac/handler/obj-cTestCases-Info.plist
@@ -0,0 +1,20 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>CFBundleDevelopmentRegion</key>
+	<string>English</string>
+	<key>CFBundleExecutable</key>
+	<string>${EXECUTABLE_NAME}</string>
+	<key>CFBundleIdentifier</key>
+	<string>com.yourcompany.${PRODUCT_NAME:identifier}</string>
+	<key>CFBundleInfoDictionaryVersion</key>
+	<string>6.0</string>
+	<key>CFBundlePackageType</key>
+	<string>BNDL</string>
+	<key>CFBundleSignature</key>
+	<string>????</string>
+	<key>CFBundleVersion</key>
+	<string>1.0</string>
+</dict>
+</plist>
diff --git a/src/client/mac/handler/testcases/dwarftests.h b/src/client/mac/handler/testcases/dwarftests.h
new file mode 100644
index 00000000..21ff7a44
--- /dev/null
+++ b/src/client/mac/handler/testcases/dwarftests.h
@@ -0,0 +1,46 @@
+// Copyright (c) 2008, Google Inc.
+// All rights reserved
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+//
+//  dwarftests.h
+//  minidump_test
+//
+//  Created by Neal Sidhwaney on 9/24/08.
+//  Copyright 2008 Google Inc. All rights reserved.
+//
+
+#import <SenTestingKit/SenTestingKit.h>
+
+
+@interface dwarftests : SenTestCase {
+
+}
+
+- (void) testDWARFSymbolFileGeneration;
+
+@end
diff --git a/src/client/mac/handler/testcases/dwarftests.mm b/src/client/mac/handler/testcases/dwarftests.mm
new file mode 100644
index 00000000..40c69aff
--- /dev/null
+++ b/src/client/mac/handler/testcases/dwarftests.mm
@@ -0,0 +1,60 @@
+// Copyright (c) 2008, Google Inc.
+// All rights reserved
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+//
+//  dwarftests.m
+//  minidump_test
+//
+//  Created by Neal Sidhwaney on 9/24/08.
+//  Copyright 2008 Google Inc. All rights reserved.
+//
+
+#import "dwarftests.h"
+#import "dump_syms.h"
+
+@implementation dwarftests
+- (void) testDWARFSymbolFileGeneration {
+  NSString *inputBreakpadSymbolFile = @"testcases/testdata/dump_syms_i386_breakpad.sym";
+  NSString *outputBreakpadSymbolFile = @"/tmp/dump_syms_i386.breakpad";
+
+  DumpSymbols *dump = [[DumpSymbols alloc] initWithContentsOfFile:@"testcases/testdata/dump_syms_dwarf_data"];
+
+  STAssertNotNil(dump, @"DumpSymbols is nil");
+  [dump setArchitecture:@"i386"];
+  [dump writeSymbolFile:outputBreakpadSymbolFile];
+  
+  NSData *d = [[NSData alloc] initWithContentsOfFile:inputBreakpadSymbolFile];
+  STAssertNotNil(d, @"Input breakpad symbol file not found");
+  
+  NSData *d1 = [[NSData alloc] initWithContentsOfFile:outputBreakpadSymbolFile]; 
+  STAssertNotNil(d1, @"Output breakpad symbol file not found");
+
+  STAssertTrue([d isEqualToData:d1],
+  @"Symbol files were not equal!",nil);
+}
+@end
diff --git a/src/client/mac/handler/testcases/testdata/dump_syms_dwarf_data b/src/client/mac/handler/testcases/testdata/dump_syms_dwarf_data
new file mode 100644
index 00000000..5be17aee
--- /dev/null
+++ b/src/client/mac/handler/testcases/testdata/dump_syms_dwarf_data
diff --git a/src/client/mac/handler/testcases/testdata/dump_syms_i386_breakpad.sym b/src/client/mac/handler/testcases/testdata/dump_syms_i386_breakpad.sym
new file mode 100644
index 00000000..ebd8281f
--- /dev/null
+++ b/src/client/mac/handler/testcases/testdata/dump_syms_i386_breakpad.sym
@@ -0,0 +1,5161 @@
+MODULE mac x86 94BF873C47A73BC07125291390B4C5F10 dump_syms_dwarf_data
+FILE 1 /Developer/SDKs/MacOSX10.4u.sdk/usr/include/libkern/i386/OSByteOrder.h
+FILE 2 /Developer/SDKs/MacOSX10.4u.sdk/usr/include/architecture/byte_order.h
+FILE 3 /g/code/breakpad-staging/src/tools/mac/dump_syms/../../../common/mac/dump_syms.mm
+FILE 4 /Developer/SDKs/MacOSX10.4u.sdk/System/Library/Frameworks/Foundation.framework/Headers/NSRange.h
+FILE 5 /Developer/SDKs/MacOSX10.4u.sdk/usr/include/c++/4.0.0/new
+FILE 6 /Developer/SDKs/MacOSX10.4u.sdk/usr/include/c++/4.0.0/ext/hash_fun.h
+FILE 7 ../../../common/mac/dwarf/dwarf2reader.h
+FILE 8 ../../../common/mac/file_id.h
+FILE 9 ../../../common/mac/dwarf/functioninfo.h
+FILE 10 /Developer/SDKs/MacOSX10.4u.sdk/usr/include/c++/4.0.0/bits/stl_tree.h
+FILE 11 /Developer/SDKs/MacOSX10.4u.sdk/usr/include/c++/4.0.0/bits/stl_iterator.h
+FILE 12 /Developer/SDKs/MacOSX10.4u.sdk/usr/include/c++/4.0.0/ext/hashtable.h
+FILE 13 /Developer/SDKs/MacOSX10.4u.sdk/usr/include/c++/4.0.0/bits/stl_pair.h
+FILE 14 /Developer/SDKs/MacOSX10.4u.sdk/usr/include/c++/4.0.0/ext/new_allocator.h
+FILE 15 /Developer/SDKs/MacOSX10.4u.sdk/usr/include/c++/4.0.0/bits/allocator.h
+FILE 16 /Developer/SDKs/MacOSX10.4u.sdk/usr/include/c++/4.0.0/bits/stl_vector.h
+FILE 17 /Developer/SDKs/MacOSX10.4u.sdk/usr/include/c++/4.0.0/bits/stl_iterator_base_types.h
+FILE 18 /Developer/SDKs/MacOSX10.4u.sdk/usr/include/c++/4.0.0/bits/stl_iterator_base_funcs.h
+FILE 19 /Developer/SDKs/MacOSX10.4u.sdk/usr/include/c++/4.0.0/bits/stl_algo.h
+FILE 20 /Developer/SDKs/MacOSX10.4u.sdk/usr/include/c++/4.0.0/bits/stl_map.h
+FILE 21 /Developer/SDKs/MacOSX10.4u.sdk/usr/include/c++/4.0.0/bits/stl_construct.h
+FILE 22 /Developer/SDKs/MacOSX10.4u.sdk/usr/include/c++/4.0.0/bits/stl_function.h
+FILE 23 /Developer/SDKs/MacOSX10.4u.sdk/usr/include/c++/4.0.0/ext/hash_map
+FILE 24 /Developer/SDKs/MacOSX10.4u.sdk/usr/include/c++/4.0.0/bits/basic_string.h
+FILE 25 /Developer/SDKs/MacOSX10.4u.sdk/usr/include/c++/4.0.0/bits/stl_algobase.h
+FILE 26 /Developer/SDKs/MacOSX10.4u.sdk/usr/include/c++/4.0.0/bits/stl_list.h
+FILE 27 /Developer/SDKs/MacOSX10.4u.sdk/usr/include/c++/4.0.0/bits/list.tcc
+FILE 28 /Developer/SDKs/MacOSX10.4u.sdk/usr/include/c++/4.0.0/bits/stl_uninitialized.h
+FILE 29 /Developer/SDKs/MacOSX10.4u.sdk/usr/include/c++/4.0.0/bits/vector.tcc
+FILE 30 /g/code/breakpad-staging/src/tools/mac/dump_syms/../../../common/mac/dwarf/functioninfo.cc
+FILE 31 ../../../common/mac/dwarf/dwarf2reader.h
+FILE 32 ../../../common/mac/dwarf/functioninfo.h
+FILE 33 /Developer/SDKs/MacOSX10.4u.sdk/usr/include/c++/4.0.0/bits/stl_pair.h
+FILE 34 /Developer/SDKs/MacOSX10.4u.sdk/usr/include/c++/4.0.0/ext/hashtable.h
+FILE 35 /Developer/SDKs/MacOSX10.4u.sdk/usr/include/c++/4.0.0/memory
+FILE 36 /Developer/SDKs/MacOSX10.4u.sdk/usr/include/c++/4.0.0/ext/new_allocator.h
+FILE 37 /Developer/SDKs/MacOSX10.4u.sdk/usr/include/c++/4.0.0/bits/basic_string.h
+FILE 38 /Developer/SDKs/MacOSX10.4u.sdk/usr/include/c++/4.0.0/bits/stl_iterator.h
+FILE 39 /Developer/SDKs/MacOSX10.4u.sdk/usr/include/c++/4.0.0/bits/stl_vector.h
+FILE 40 /Developer/SDKs/MacOSX10.4u.sdk/usr/include/c++/4.0.0/bits/stl_tree.h
+FILE 41 /Developer/SDKs/MacOSX10.4u.sdk/usr/include/c++/4.0.0/bits/stl_function.h
+FILE 42 /Developer/SDKs/MacOSX10.4u.sdk/usr/include/c++/4.0.0/ext/hash_map
+FILE 43 /Developer/SDKs/MacOSX10.4u.sdk/usr/include/c++/4.0.0/bits/stl_construct.h
+FILE 44 /Developer/SDKs/MacOSX10.4u.sdk/usr/include/c++/4.0.0/bits/stl_algobase.h
+FILE 45 /Developer/SDKs/MacOSX10.4u.sdk/usr/include/c++/4.0.0/bits/stl_map.h
+FILE 46 /Developer/SDKs/MacOSX10.4u.sdk/usr/include/c++/4.0.0/bits/stl_uninitialized.h
+FILE 47 /Developer/SDKs/MacOSX10.4u.sdk/usr/include/c++/4.0.0/bits/vector.tcc
+FILE 48 /g/code/breakpad-staging/src/tools/mac/dump_syms/dump_syms_tool.mm
+FILE 49 /g/code/breakpad-staging/src/tools/mac/dump_syms/../../../common/mac/file_id.cc
+FILE 50 /Developer/SDKs/MacOSX10.4u.sdk/usr/include/architecture/byte_order.h
+FILE 51 /g/code/breakpad-staging/src/tools/mac/dump_syms/../../../common/mac/macho_id.cc
+FILE 52 /Developer/SDKs/MacOSX10.4u.sdk/usr/include/libkern/i386/OSByteOrder.h
+FILE 53 /Developer/SDKs/MacOSX10.4u.sdk/usr/include/architecture/byte_order.h
+FILE 54 /g/code/breakpad-staging/src/tools/mac/dump_syms/../../../common/mac/macho_walker.cc
+FILE 55 /Developer/SDKs/MacOSX10.4u.sdk/usr/include/libkern/i386/OSByteOrder.h
+FILE 56 /Developer/SDKs/MacOSX10.4u.sdk/usr/include/architecture/byte_order.h
+FILE 57 /g/code/breakpad-staging/src/tools/mac/dump_syms/../../../common/mac/macho_utilities.cc
+FILE 58 /g/code/breakpad-staging/src/tools/mac/dump_syms/../../../common/mac/dwarf/bytereader.cc
+FILE 59 ../../../common/mac/dwarf/bytereader-inl.h
+FILE 60 /g/code/breakpad-staging/src/tools/mac/dump_syms/../../../common/mac/dwarf/dwarf2reader.cc
+FILE 61 /Developer/SDKs/MacOSX10.4u.sdk/usr/include/c++/4.0.0/bits/stl_algobase.h
+FILE 62 /Developer/SDKs/MacOSX10.4u.sdk/usr/include/c++/4.0.0/bits/stl_deque.h
+FILE 63 ../../../common/mac/dwarf/bytereader.h
+FILE 64 ../../../common/mac/dwarf/bytereader-inl.h
+FILE 65 ../../../common/mac/dwarf/line_state_machine.h
+FILE 66 /Developer/SDKs/MacOSX10.4u.sdk/usr/include/c++/4.0.0/bits/stl_list.h
+FILE 67 /Developer/SDKs/MacOSX10.4u.sdk/usr/include/c++/4.0.0/memory
+FILE 68 /Developer/SDKs/MacOSX10.4u.sdk/usr/include/c++/4.0.0/ext/new_allocator.h
+FILE 69 /Developer/SDKs/MacOSX10.4u.sdk/usr/include/c++/4.0.0/bits/allocator.h
+FILE 70 /Developer/SDKs/MacOSX10.4u.sdk/usr/include/c++/4.0.0/bits/stl_pair.h
+FILE 71 /Developer/SDKs/MacOSX10.4u.sdk/usr/include/c++/4.0.0/bits/stl_vector.h
+FILE 72 /Developer/SDKs/MacOSX10.4u.sdk/usr/include/c++/4.0.0/bits/stl_iterator.h
+FILE 73 /Developer/SDKs/MacOSX10.4u.sdk/usr/include/c++/4.0.0/bits/stl_construct.h
+FILE 74 ../../../common/mac/dwarf/dwarf2reader.h
+FILE 75 /Developer/SDKs/MacOSX10.4u.sdk/usr/include/c++/4.0.0/bits/stl_stack.h
+FILE 76 /Developer/SDKs/MacOSX10.4u.sdk/usr/include/c++/4.0.0/bits/deque.tcc
+FILE 77 /Developer/SDKs/MacOSX10.4u.sdk/usr/include/c++/4.0.0/bits/list.tcc
+FILE 78 /Developer/SDKs/MacOSX10.4u.sdk/usr/include/c++/4.0.0/bits/vector.tcc
+FILE 79 /Developer/SDKs/MacOSX10.4u.sdk/usr/include/c++/4.0.0/bits/stl_uninitialized.h
+FILE 80 /var/tmp/gcc/gcc-5484~1/src/gcc/libgcc2.c
+FUNC 162a 28 0 _OSSwapInt16
+162a 10 44 1
+163a 16 46 1
+1650 2 47 1
+FUNC 1652 1c 0 _OSSwapInt32
+1652 f 53 1
+1661 8 55 1
+1669 3 56 1
+166c 2 57 1
+FUNC 166e 2b 0 _OSSwapInt64
+166e 12 64 1
+1680 11 69 1
+1691 6 70 1
+1697 2 71 1
+1699 1 71 1
+FUNC 169a 1e 0 NXSwapShort
+169a 10 43 2
+16aa c 45 2
+16b6 2 46 2
+FUNC 16b8 19 0 NXSwapInt
+16b8 f 52 2
+16c7 8 54 2
+16cf 2 55 2
+16d1 1 55 2
+FUNC 16d2 19 0 NXSwapLong
+16d2 f 61 2
+16e1 8 63 2
+16e9 2 64 2
+16eb 1 64 2
+FUNC 16ec 1f 0 NXSwapLongLong
+16ec 12 70 2
+16fe b 72 2
+1709 2 73 2
+170b 1 73 2
+FUNC 170c 181 0 -[DumpSymbols convertCPlusPlusSymbols:]
+170c 14 128 3
+1720 54 130 3
+1774 f 132 3
+1783 7 133 3
+178a 1a 136 3
+17a4 5 138 3
+17a9 1a 139 3
+17c3 23 140 3
+17e6 7 141 3
+17ed 44 142 3
+1831 1e 145 3
+184f 29 138 3
+1878 b 148 3
+1883 3 150 3
+1886 7 151 3
+188d 1 151 3
+FUNC 188e 323 0 -[DumpSymbols convertSymbols]
+188e 14 154 3
+18a2 1f 155 3
+18c1 3e 156 3
+18ff 2b 160 3
+192a c 162 3
+1936 43 164 3
+1979 2a 165 3
+19a3 20 168 3
+19c3 d 169 3
+19d0 1e 171 3
+19ee 11 162 3
+19ff 7 181 3
+1a06 6 182 3
+1a0c 5 184 3
+1a11 15 185 3
+1a26 6 18 4
+1a2c 6 19 4
+1a32 6 20 4
+1a38 6 185 4
+1a3e 28 186 4
+1a66 21 187 4
+1a87 1a 188 4
+1aa1 a 190 4
+1aab c 194 4
+1ab7 43 198 4
+1afa 21 199 4
+1b1b 20 202 4
+1b3b 2e 203 4
+1b69 1e 194 4
+1b87 c 184 4
+1b93 17 207 4
+1baa 7 208 4
+1bb1 1 208 4
+FUNC 1bb2 4a2 0 -[DumpSymbols addFunction:line:address:section:]
+1bb2 21 211 4
+1bd3 2f 212 4
+1c02 e 214 4
+1c10 4 219 4
+1c14 2a 221 4
+1c3e 22 223 4
+1c60 6 224 4
+1c66 2a 225 4
+1c90 4 226 4
+1c94 2e 230 4
+1cc2 2e 233 4
+1cf0 2e 236 4
+1d1e a 239 4
+1d28 2b 253 4
+1d53 e 254 4
+1d61 3c 255 4
+1d9d 22 32 4
+1dbf 3 256 4
+1dc2 6 259 4
+1dc8 a 260 4
+1dd2 3c 261 4
+1e0e 25 262 4
+1e33 2a 263 4
+1e5d 22 265 4
+1e7f 26 270 4
+1ea5 6 272 4
+1eab 37 273 4
+1ee2 2a 274 4
+1f0c 17 275 4
+1f23 43 278 4
+1f66 2e 279 4
+1f94 23 282 4
+1fb7 43 285 4
+1ffa 52 287 4
+204c 8 289 4
+FUNC 2054 5a4 0 -[DumpSymbols processSymbolItem:stringTable:]
+2054 18 292 4
+206c 8 293 4
+2074 4 294 4
+2078 16 297 4
+208e c 298 4
+209a f 300 4
+20a9 b 301 4
+20b4 16 303 4
+20ca 4d 309 4
+2117 38 311 4
+214f 30 315 4
+217f 60 317 4
+21df d 322 4
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+2217 3a 327 4
+2251 f 332 4
+2260 2d 333 4
+228d 1a 334 4
+22a7 32 335 4
+22d9 20 342 4
+22f9 c 343 4
+2305 24 348 4
+2329 a 349 4
+2333 3c 350 4
+236f 2a 352 4
+2399 1c 353 4
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+23be f 356 4
+23cd 2d 357 4
+23fa 2f 358 4
+2429 20 360 4
+2449 c 361 4
+2455 7 363 4
+245c 21 365 4
+247d 4a 368 4
+24c7 9 370 4
+24d0 1a 371 4
+24ea 4b 372 4
+2535 4 373 4
+2539 5 371 4
+253e 29 374 4
+2567 2d 376 4
+2594 4b 378 4
+25df 4 379 4
+25e3 a 382 4
+25ed b 383 4
+FUNC 25f8 c9 0 -[DumpSymbols loadSymbolInfo:offset:]
+25f8 13 391 4
+260b 2b 392 4
+2636 2a 393 4
+2660 2d 395 4
+268d 2e 398 4
+26bb 6 399 4
+26c1 1 399 4
+FUNC 26c2 2be 0 -[DumpSymbols loadSTABSSymbolInfo:offset:]
+26c2 16 537 4
+26d8 9 538 4
+26e1 10 539 4
+26f1 2e 540 4
+271f 9 542 4
+2728 22 543 4
+274a 4 544 4
+274e a 546 4
+2758 3c 547 4
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+27b4 25 552 4
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+2823 c 555 4
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+283b c 559 4
+2847 23 562 4
+286a a 563 4
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+287e 2e 565 4
+28ac 39 566 4
+28e5 2e 570 4
+2913 4 571 4
+2917 17 559 4
+292e 25 575 4
+2953 9 576 4
+295c 17 549 4
+2973 4 579 4
+2977 9 580 4
+FUNC 2980 28a 0 -[DumpSymbols loadSymbolInfo64:offset:]
+2980 16 583 4
+2996 9 585 4
+299f 10 586 4
+29af 2e 587 4
+29dd 9 589 4
+29e6 22 590 4
+2a08 4 591 4
+2a0c c 593 4
+2a18 e 594 4
+2a26 6 595 4
+2a2c 25 596 4
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+2a76 25 598 4
+2a9b 9 599 4
+2aa4 c 600 4
+2ab0 c 603 4
+2abc 17 604 4
+2ad3 23 609 4
+2af6 a 610 4
+2b00 a 611 4
+2b0a 2e 612 4
+2b38 37 613 4
+2b6f 2e 615 4
+2b9d 4 616 4
+2ba1 17 603 4
+2bb8 25 620 4
+2bdd 9 621 4
+2be6 17 593 4
+2bfd 4 624 4
+2c01 9 625 4
+FUNC 2c0a 199 0 -[DumpSymbols loadSymbolInfoForArchitecture]
+2c0a 13 628 4
+2c1d 41 630 4
+2c5e 2b 631 4
+2c89 1a 632 4
+2ca3 40 634 4
+2ce3 40 635 4
+2d23 5f 637 4
+2d82 17 639 4
+2d99 4 640 4
+2d9d 6 641 4
+2da3 1 641 4
+FUNC 2da4 3e5 0 -[DumpSymbols loadHeader:offset:]
+2da4 18 728 4
+2dbc 9 729 4
+2dc5 10 730 4
+2dd5 2e 731 4
+2e03 9 733 4
+2e0c 2b 734 4
+2e37 1e 736 4
+2e55 c 738 4
+2e61 e 739 4
+2e6f 6 740 4
+2e75 50 742 4
+2ec5 2e 743 4
+2ef3 2e 744 4
+2f21 2e 745 4
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+2f6f 1b7 755 4
+3126 9 757 4
+312f 25 761 4
+3154 9 762 4
+315d 17 738 4
+3174 a 765 4
+317e b 766 4
+3189 1 766 4
+FUNC 318a 41d 0 -[DumpSymbols loadHeader64:offset:]
+318a 18 769 4
+31a2 9 771 4
+31ab 10 772 4
+31bb 2e 773 4
+31e9 9 775 4
+31f2 c 777 4
+31fe 2b 778 4
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+3356 29 786 4
+337f 1c5 794 4
+3544 9 795 4
+354d 25 799 4
+3572 9 800 4
+357b 17 777 4
+3592 a 803 4
+359c b 804 4
+35a7 1 804 4
+FUNC 35a8 52a 0 -[DumpSymbols loadModuleInfo]
+35a8 14 807 4
+35bc e 808 4
+35ca 41 810 4
+360b 1a 811 4
+3625 6 812 4
+362b 6 814 4
+3631 17 815 4
+3648 c 816 4
+3654 29 820 4
+367d 29 821 4
+36a6 29 822 4
+36cf 35 824 4
+3704 12 826 4
+3716 17 827 4
+372d c 828 4
+3739 3c 832 4
+3775 a 834 4
+377f 9 836 4
+3788 25 837 4
+37ad c 839 4
+37b9 54 840 4
+380d 57 841 4
+3864 57 842 4
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+3912 57 844 4
+3969 1c 846 4
+3985 4b 847 4
+39d0 49 849 4
+3a19 13 839 4
+3a2c 6 851 4
+3a32 3c 852 4
+3a6e 3a 854 4
+3aa8 17 857 4
+3abf c 858 4
+3acb 7 859 4
+FUNC 3ad2 b6 0 WriteFormat
+3ad2 10 862 4
+3ae2 6 867 4
+3ae8 24 868 4
+3b0c 27 869 4
+3b33 40 870 4
+3b73 c 873 4
+3b7f 9 874 4
+FUNC 3b88 35 0 -[DumpSymbols availableArchitectures]
+3b88 13 1140 4
+3b9b 1c 1141 4
+3bb7 6 1142 4
+3bbd 1 1142 4
+FUNC 3bbe 1b4 0 -[DumpSymbols setArchitecture:]
+3bbe 13 1158 4
+3bd1 1a 1159 4
+3beb 4 1160 4
+3bef 2a 1162 4
+3c19 9 1163 4
+3c22 2a 1165 4
+3c4c 9 1166 4
+3c55 9 1167 4
+3c5e 2a 1169 4
+3c88 6 1170 4
+3c8e 2a 1172 4
+3cb8 6 1173 4
+3cbe 2a 1175 4
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+3cec 6 1179 4
+3cf2 2c 1180 4
+3d1e 9 1181 4
+3d27 1c 1183 4
+3d43 1f 1184 4
+3d62 a 1187 4
+3d6c 6 1188 4
+FUNC 3d72 14 0 -[DumpSymbols architecture]
+3d72 c 1191 4
+3d7e 6 1192 4
+3d84 2 1193 4
+FUNC 3d86 e7 0 -[DumpSymbols writeSymbolFile:]
+3d86 13 1196 4
+3d99 1a 1197 4
+3db3 48 1200 4
+3dfb 9 1201 4
+3e04 1e 1203 4
+3e22 6 1205 4
+3e28 9 1206 4
+3e31 21 1208 4
+3e52 b 1210 4
+3e5d a 1212 4
+3e67 6 1213 4
+3e6d 1 1213 4
+FUNC 3e6e 65 0 -[MachSection initWithMachSection:andNumber:]
+3e6e 13 1219 4
+3e81 37 1220 4
+3eb8 9 1221 4
+3ec1 9 1222 4
+3eca 3 1225 4
+3ecd 6 1226 4
+3ed3 1 1226 4
+FUNC 3ed4 14 0 -[MachSection sectionPointer]
+3ed4 c 1228 4
+3ee0 6 1229 4
+3ee6 2 1230 4
+FUNC 3ee8 14 0 -[MachSection sectionNumber]
+3ee8 c 1232 4
+3ef4 6 1233 4
+3efa 2 1234 4
+FUNC 3efc 17c 0 -[DumpSymbols processDWARFSourceFileInfo:]
+3efc 14 459 4
+3f10 a 460 4
+3f1a 3c 461 4
+3f56 20 463 4
+3f76 5 464 4
+3f7b 3a 465 4
+3fb5 1d 466 4
+3fd2 3a 467 4
+400c 2a 468 4
+4036 3b 464 4
+4071 7 471 4
+FUNC 4078 1d7 0 DumpFunctionMap
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+FUNC 4250 3ef 0 -[DumpSymbols processDWARFFunctionInfo:]
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+FUNC 4640 1f5 0 -[DumpSymbols processDWARFLineNumberInfo:]
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+FUNC 4836 10f 0 -[DumpSymbols dealloc]
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+FUNC 4946 512 0 -[DumpSymbols loadDWARFSymbolInfo:offset:]
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+FUNC 4e58 4fd 0 -[DumpSymbols generateSectionDictionary:]
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+FUNC 5356 24a 0 -[DumpSymbols getSectionMapForArchitecture:]
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+FUNC 55a0 3fe 0 -[DumpSymbols initWithContentsOfFile:]
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+FUNC 599e d74 0 -[DumpSymbols outputSymbolFile:]
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+FUNC 6712 11 0 operator new
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+FUNC 6724 e 0 operator delete
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+FUNC 9c3a 4b 0 fill<__gnu_cxx::__normal_iterator<__gnu_cxx::_Hashtable_node<std::pair<const std::string, std::pair<const char*, uint64> > >**, std::vector<__gnu_cxx::_Hashtable_node<std::pair<const std::string, std::pair<const char*, uint64> > >*, std::allocator<__gnu_cxx::_Hashtable_node<std::pair<const std::string, std::pair<const char*, uint64> > >*> > >, __gnu_cxx::_Hashtable_node<std::pair<const std::string, std::pair<const char*, uint64> > >*>
+9c3a c 539 26
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+FUNC a2a4 4b 0 fill<__gnu_cxx::__normal_iterator<__gnu_cxx::_Hashtable_node<std::pair<const std::string, dwarf2reader::SectionMap*> >**, std::vector<__gnu_cxx::_Hashtable_node<std::pair<const std::string, dwarf2reader::SectionMap*> >*, std::allocator<__gnu_cxx::_Hashtable_node<std::pair<const std::string, dwarf2reader::SectionMap*> >*> > >, __gnu_cxx::_Hashtable_node<std::pair<const std::string, dwarf2reader::SectionMap*> >*>
+a2a4 c 539 26
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+FUNC a7fe 60 0 copy_b<__gnu_cxx::_Hashtable_node<std::pair<const std::string, std::pair<const char*, uint64> > >*>
+a7fe d 422 27
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+FUNC a88a 64 0 copy_b_n<__gnu_cxx::__normal_iterator<__gnu_cxx::_Hashtable_node<std::pair<const std::string, std::pair<const char*, uint64> > >**, std::vector<__gnu_cxx::_Hashtable_node<std::pair<const std::string, std::pair<const char*, uint64> > >*, std::allocator<__gnu_cxx::_Hashtable_node<std::pair<const std::string, std::pair<const char*, uint64> > >*> > >, __gnu_cxx::__normal_iterator<__gnu_cxx::_Hashtable_node<std::pair<const std::string, std::pair<const char*, uint64> > >**, std::vector<__gnu_cxx::_Hashtable_node<std::pair<const std::string, std::pair<const char*, uint64> > >*, std::allocator<__gnu_cxx::_Hashtable_node<std::pair<const std::string, std::pair<const char*, uint64> > >*> > > >
+a88a e 480 27
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+a902 1b 517 27
+a91d 1 517 27
+FUNC a91e 32 0 fill_n<__gnu_cxx::_Hashtable_node<std::pair<const std::string, dwarf2reader::SectionMap*> >**, long unsigned int, __gnu_cxx::_Hashtable_node<std::pair<const std::string, dwarf2reader::SectionMap*> >*>
+a91e c 614 27
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+a97c c 182 28
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+FUNC ad9c 32 0 fill_n<__gnu_cxx::_Hashtable_node<std::pair<const std::string, std::pair<const char*, uint64> > >**, long unsigned int, __gnu_cxx::_Hashtable_node<std::pair<const std::string, std::pair<const char*, uint64> > >*>
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+b219 1 212 28
+FUNC b21a 60 0 copy_b<__gnu_cxx::_Hashtable_node<std::pair<const std::string, dwarf2reader::SectionMap*> >*>
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+b2a5 1 443 28
+FUNC b2a6 64 0 copy_b_n<__gnu_cxx::__normal_iterator<__gnu_cxx::_Hashtable_node<std::pair<const std::string, dwarf2reader::SectionMap*> >**, std::vector<__gnu_cxx::_Hashtable_node<std::pair<const std::string, dwarf2reader::SectionMap*> >*, std::allocator<__gnu_cxx::_Hashtable_node<std::pair<const std::string, dwarf2reader::SectionMap*> >*> > >, __gnu_cxx::__normal_iterator<__gnu_cxx::_Hashtable_node<std::pair<const std::string, dwarf2reader::SectionMap*> >**, std::vector<__gnu_cxx::_Hashtable_node<std::pair<const std::string, dwarf2reader::SectionMap*> >*, std::allocator<__gnu_cxx::_Hashtable_node<std::pair<const std::string, dwarf2reader::SectionMap*> >*> > > >
+b2a6 e 480 28
+b2b4 56 482 28
+b30a c 504 28
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+b31e 1b 517 28
+b339 1 517 28
+FUNC b33a 43 0 fill_n<__gnu_cxx::__normal_iterator<__gnu_cxx::_Hashtable_node<std::pair<const std::string, std::pair<const char*, uint64> > >**, std::vector<__gnu_cxx::_Hashtable_node<std::pair<const std::string, std::pair<const char*, uint64> > >*, std::allocator<__gnu_cxx::_Hashtable_node<std::pair<const std::string, std::pair<const char*, uint64> > >*> > >, long unsigned int, __gnu_cxx::_Hashtable_node<std::pair<const std::string, std::pair<const char*, uint64> > >*>
+b33a c 614 28
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+b38e 1b 642 28
+b3a9 1 642 28
+b3aa c 182 28
+b3b6 1b 183 28
+b3d1 1 183 28
+b3d2 c 214 28
+b3de 23 218 28
+b401 1 218 28
+b402 c 308 28
+b40e 1b 310 28
+b429 1 310 28
+FUNC b42a 43 0 fill_n<__gnu_cxx::__normal_iterator<__gnu_cxx::_Hashtable_node<std::pair<const std::string, dwarf2reader::SectionMap*> >**, std::vector<__gnu_cxx::_Hashtable_node<std::pair<const std::string, dwarf2reader::SectionMap*> >*, std::allocator<__gnu_cxx::_Hashtable_node<std::pair<const std::string, dwarf2reader::SectionMap*> >*> > >, long unsigned int, __gnu_cxx::_Hashtable_node<std::pair<const std::string, dwarf2reader::SectionMap*> >*>
+b42a c 614 28
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+b46d 1 619 28
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+b499 1 642 28
+b49a c 182 28
+b4a6 1b 183 28
+b4c1 1 183 28
+b4c2 c 214 28
+b4ce 23 218 28
+b4f1 1 218 28
+b4f2 c 308 28
+b4fe 1b 310 28
+b519 1 310 28
+FUNC b51a 3f 0 copy<__gnu_cxx::_Hashtable_node<std::pair<const std::string, std::pair<const char*, uint64> > >*>
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+b559 1 301 28
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+b566 4 315 28
+b56a 1b 317 28
+b585 1 317 28
+FUNC b586 27 0 copy_n<__gnu_cxx::_Hashtable_node<std::pair<const std::string, std::pair<const char*, uint64> > >**, __gnu_cxx::_Hashtable_node<std::pair<const std::string, std::pair<const char*, uint64> > >**>
+b586 c 325 28
+b592 1b 326 28
+b5ad 1 326 28
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+FUNC b65e 66 0 _M_allocate_and_copy<__gnu_cxx::_Hashtable_node<std::pair<const std::string, std::pair<const char*, uint64> > >**>
+b65e c 761 28
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+FUNC b7e8 40 0 copy_n<__gnu_cxx::__normal_iterator<__gnu_cxx::_Hashtable_node<std::pair<const std::string, std::pair<const char*, uint64> > >**, std::vector<__gnu_cxx::_Hashtable_node<std::pair<const std::string, std::pair<const char*, uint64> > >*, std::allocator<__gnu_cxx::_Hashtable_node<std::pair<const std::string, std::pair<const char*, uint64> > >*> > >, __gnu_cxx::_Hashtable_node<std::pair<const std::string, std::pair<const char*, uint64> > >**>
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+FUNC b8d8 64 0 copy_n<__gnu_cxx::__normal_iterator<__gnu_cxx::_Hashtable_node<std::pair<const std::string, std::pair<const char*, uint64> > >**, std::vector<__gnu_cxx::_Hashtable_node<std::pair<const std::string, std::pair<const char*, uint64> > >*, std::allocator<__gnu_cxx::_Hashtable_node<std::pair<const std::string, std::pair<const char*, uint64> > >*> > >, __gnu_cxx::__normal_iterator<__gnu_cxx::_Hashtable_node<std::pair<const std::string, std::pair<const char*, uint64> > >**, std::vector<__gnu_cxx::_Hashtable_node<std::pair<const std::string, std::pair<const char*, uint64> > >*, std::allocator<__gnu_cxx::_Hashtable_node<std::pair<const std::string, std::pair<const char*, uint64> > >*> > > >
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+FUNC c01c 3f 0 copy<__gnu_cxx::_Hashtable_node<std::pair<const std::string, dwarf2reader::SectionMap*> >*>
+c01c c 298 29
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+c087 1 317 29
+FUNC c088 27 0 copy_n<__gnu_cxx::_Hashtable_node<std::pair<const std::string, dwarf2reader::SectionMap*> >**, __gnu_cxx::_Hashtable_node<std::pair<const std::string, dwarf2reader::SectionMap*> >**>
+c088 c 325 29
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+c114 23 113 29
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+FUNC c160 66 0 _M_allocate_and_copy<__gnu_cxx::_Hashtable_node<std::pair<const std::string, dwarf2reader::SectionMap*> >**>
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+c2d2 18 86 29
+FUNC c2ea 40 0 copy_n<__gnu_cxx::__normal_iterator<__gnu_cxx::_Hashtable_node<std::pair<const std::string, dwarf2reader::SectionMap*> >**, std::vector<__gnu_cxx::_Hashtable_node<std::pair<const std::string, dwarf2reader::SectionMap*> >*, std::allocator<__gnu_cxx::_Hashtable_node<std::pair<const std::string, dwarf2reader::SectionMap*> >*> > >, __gnu_cxx::_Hashtable_node<std::pair<const std::string, dwarf2reader::SectionMap*> >**>
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+c38e 23 113 29
+c3b1 1 113 29
+c3b2 c 252 29
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+c3d9 1 254 29
+FUNC c3da 64 0 copy_n<__gnu_cxx::__normal_iterator<__gnu_cxx::_Hashtable_node<std::pair<const std::string, dwarf2reader::SectionMap*> >**, std::vector<__gnu_cxx::_Hashtable_node<std::pair<const std::string, dwarf2reader::SectionMap*> >*, std::allocator<__gnu_cxx::_Hashtable_node<std::pair<const std::string, dwarf2reader::SectionMap*> >*> > >, __gnu_cxx::__normal_iterator<__gnu_cxx::_Hashtable_node<std::pair<const std::string, dwarf2reader::SectionMap*> >**, std::vector<__gnu_cxx::_Hashtable_node<std::pair<const std::string, dwarf2reader::SectionMap*> >*, std::allocator<__gnu_cxx::_Hashtable_node<std::pair<const std::string, dwarf2reader::SectionMap*> >*> > > >
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+FUNC e080 35 0 operator=
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+FUNC e85c 4e 0 copy_b<std::string*, std::string*>
+e85c c 408 44
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+FUNC e8d6 64 0 copy_b_n<__gnu_cxx::__normal_iterator<std::string*, std::vector<std::string, std::allocator<std::string> > >, __gnu_cxx::__normal_iterator<std::string*, std::vector<std::string, std::allocator<std::string> > > >
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+FUNC e9d4 54 0 copy_b<dwarf2reader::SourceFileInfo*, dwarf2reader::SourceFileInfo*>
+e9d4 c 408 44
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+ea53 1 443 44
+FUNC ea54 64 0 copy_b_n<__gnu_cxx::__normal_iterator<dwarf2reader::SourceFileInfo*, std::vector<dwarf2reader::SourceFileInfo, std::allocator<dwarf2reader::SourceFileInfo> > >, __gnu_cxx::__normal_iterator<dwarf2reader::SourceFileInfo*, std::vector<dwarf2reader::SourceFileInfo, std::allocator<dwarf2reader::SourceFileInfo> > > >
+ea54 e 480 44
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+FUNC 10144 16c 0 Start
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+FUNC 102b0 108 0 Usage
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+FUNC 103b8 3af 0 SetupOptions
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+FUNC 10768 a7 0 main
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+FUNC 10b1a 13 0 NXHostByteOrder
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+FUNC 11c98 13 0 NXHostByteOrder
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+FUNC 12586 32 0 breakpad_swap_uuid_command
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+FUNC 125b8 da 0 breakpad_swap_segment_command_64
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+FUNC 12692 a4 0 breakpad_swap_mach_header_64
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+FUNC 12736 1d1 0 breakpad_swap_section_64
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+FUNC 17fea 52 0 _M_insert_dispatch<std::_List_const_iterator<std::pair<dwarf2reader::DwarfAttribute, dwarf2reader::DwarfForm> > >
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+FUNC 1803c 36 0 insert<std::_List_const_iterator<std::pair<dwarf2reader::DwarfAttribute, dwarf2reader::DwarfForm> > >
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+FUNC 1881a 4d 0 fill<__gnu_cxx::__normal_iterator<unsigned char*, std::vector<unsigned char, std::allocator<unsigned char> > >, unsigned char>
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+FUNC 18a9e 4c 0 operator=
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+FUNC 18aea 52 0 copy<dwarf2reader::CompilationUnit::Abbrev*, dwarf2reader::CompilationUnit::Abbrev*>
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+FUNC 18b68 64 0 copy_n<__gnu_cxx::__normal_iterator<dwarf2reader::CompilationUnit::Abbrev*, std::vector<dwarf2reader::CompilationUnit::Abbrev, std::allocator<dwarf2reader::CompilationUnit::Abbrev> > >, __gnu_cxx::__normal_iterator<dwarf2reader::CompilationUnit::Abbrev*, std::vector<dwarf2reader::CompilationUnit::Abbrev, std::allocator<dwarf2reader::CompilationUnit::Abbrev> > > >
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+FUNC 18ca8 54 0 copy_b<dwarf2reader::CompilationUnit::Abbrev*, dwarf2reader::CompilationUnit::Abbrev*>
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+FUNC 18d28 64 0 copy_b_n<__gnu_cxx::__normal_iterator<dwarf2reader::CompilationUnit::Abbrev*, std::vector<dwarf2reader::CompilationUnit::Abbrev, std::allocator<dwarf2reader::CompilationUnit::Abbrev> > >, __gnu_cxx::__normal_iterator<dwarf2reader::CompilationUnit::Abbrev*, std::vector<dwarf2reader::CompilationUnit::Abbrev, std::allocator<dwarf2reader::CompilationUnit::Abbrev> > > >
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+18da0 1b 517 78
+18dbb 1 517 78
+FUNC 18dbc 4d 0 fill<__gnu_cxx::__normal_iterator<dwarf2reader::CompilationUnit::Abbrev*, std::vector<dwarf2reader::CompilationUnit::Abbrev, std::allocator<dwarf2reader::CompilationUnit::Abbrev> > >, dwarf2reader::CompilationUnit::Abbrev>
+18dbc c 526 78
+18dc8 2 528 78
+18dca 1c 529 78
+18de6 21 528 78
+18e07 2 529 78
+18e09 1 529 78
+18e0a c 560 78
+18e16 4 567 78
+18e1a 1b 568 78
+18e35 1 568 78
+FUNC 18e36 3f 0 copy<unsigned char>
+18e36 c 298 78
+18e42 22 300 78
+18e64 11 301 78
+18e75 1 301 78
+18e76 c 307 78
+18e82 4 315 78
+18e86 1b 317 78
+18ea1 1 317 78
+FUNC 18ea2 64 0 copy_n<__gnu_cxx::__normal_iterator<unsigned char*, std::vector<unsigned char, std::allocator<unsigned char> > >, __gnu_cxx::__normal_iterator<unsigned char*, std::vector<unsigned char, std::allocator<unsigned char> > > >
+18ea2 e 352 78
+18eb0 56 354 78
+18f06 c 376 78
+18f12 4 384 78
+18f16 4 385 78
+18f1a 1b 387 78
+18f35 1 387 78
+18f36 d 122 78
+18f43 26 124 78
+18f69 43 125 78
+18fac 22 126 78
+18fce 8 127 78
+18fd6 c 97 78
+18fe2 7 98 78
+18fe9 1 98 78
+18fea c 83 78
+18ff6 1d 85 78
+19013 5 86 78
+19018 d 88 78
+19025 1 88 78
+19026 c 116 78
+19032 1e 117 78
+19050 c 73 79
+1905c 1b 74 79
+19077 1 74 79
+19078 c 108 79
+19084 23 113 79
+190a7 1 113 79
+190a8 c 252 79
+190b4 1b 254 79
+190cf 1 254 79
+190d0 c 106 79
+190dc d 107 79
+190e9 1 107 79
+190ea c 119 79
+190f6 2 121 79
+190f8 13 122 79
+1910b 21 121 79
+1912c 2 122 79
+1912e c 148 79
+1913a 1c 155 79
+19156 d 188 79
+19163 6 190 79
+19169 2 193 79
+1916b 1c 194 79
+19187 1b 193 79
+191a2 b 196 79
+191ad 12 198 79
+191bf b 199 79
+191ca 13 196 79
+191dd 6 199 79
+191e3 1 199 79
+191e4 c 214 79
+191f0 23 218 79
+19213 1 218 79
+19214 c 308 79
+19220 1b 310 79
+1923b 1 310 79
+1923c d 80 79
+19249 6 82 79
+1924f 2 85 79
+19251 24 86 79
+19275 2c 85 79
+192a1 b 87 79
+192ac b 89 79
+192b7 12 91 79
+192c9 b 92 79
+192d4 13 89 79
+192e7 9 92 79
+192f0 c 108 79
+192fc 23 113 79
+1931f 1 113 79
+19320 c 252 79
+1932c 1b 254 79
+19347 1 254 79
+19348 14 249 79
+1935c 14 251 79
+19370 22 253 79
+19392 f 255 79
+193a1 12 256 79
+193b3 55 257 79
+19408 4b 260 79
+19453 e 264 79
+19461 15 265 79
+19476 e 266 79
+19484 1d 271 79
+194a1 8 272 79
+194a9 e 273 79
+194b7 27 275 79
+194de 6 276 79
+194e4 55 279 79
+19539 25 284 79
+1955e b 285 79
+19569 4f 286 79
+195b8 3 284 79
+195bb 13 279 79
+195ce e 286 79
+195dc 4d 298 79
+19629 36 299 79
+1965f 12 302 79
+19671 13 303 79
+19684 2e 304 79
+196b2 13 286 79
+196c5 b 292 79
+196d0 39 294 79
+19709 23 295 79
+1972c b 296 79
+19737 13 292 79
+1974a 7 304 79
+19751 1 304 79
+19752 c 602 79
+1975e 10 604 79
+1976e 1e 606 79
+1978c 11 607 79
+1979d 25 610 79
+FUNC 197c2 50 0 copy_b<unsigned char>
+197c2 d 422 79
+197cf f 424 79
+197de 24 425 79
+19802 10 426 79
+19812 c 432 79
+1981e 4 440 79
+19822 1b 443 79
+1983d 1 443 79
+FUNC 1983e 64 0 copy_b_n<__gnu_cxx::__normal_iterator<unsigned char*, std::vector<unsigned char, std::allocator<unsigned char> > >, __gnu_cxx::__normal_iterator<unsigned char*, std::vector<unsigned char, std::allocator<unsigned char> > > >
+1983e e 480 79
+1984c 56 482 79
+198a2 c 504 79
+198ae 4 514 79
+198b2 4 515 79
+198b6 1b 517 79
+198d1 1 517 79
+198d2 c 647 79
+198de 1e 649 79
+198fc 8 650 79
+19904 c 182 79
+19910 1b 183 79
+1992b 1 183 79
+1992c c 214 79
+19938 23 218 79
+1995b 1 218 79
+1995c c 308 79
+19968 1b 310 79
+19983 1 310 79
+19984 c 119 79
+19990 2 121 79
+19992 b 122 79
+1999d c 121 79
+199a9 2 122 79
+199ab 1 122 79
+199ac c 148 79
+199b8 1c 155 79
+199d4 d 80 79
+199e1 6 82 79
+199e7 2 85 79
+199e9 12 86 79
+199fb 12 85 79
+19a0d b 87 79
+19a18 b 89 79
+19a23 12 91 79
+19a35 b 92 79
+19a40 13 89 79
+19a53 9 92 79
+19a5c c 108 79
+19a68 23 113 79
+19a8b 1 113 79
+19a8c c 252 79
+19a98 1b 254 79
+19ab3 1 254 79
+19ab4 d 188 79
+19ac1 6 190 79
+19ac7 2 193 79
+19ac9 12 194 79
+19adb 16 193 79
+19af1 b 196 79
+19afc 12 198 79
+19b0e b 199 79
+19b19 13 196 79
+19b2c 6 199 79
+19b32 c 214 79
+19b3e 23 218 79
+19b61 1 218 79
+19b62 c 308 79
+19b6e 1b 310 79
+19b89 1 310 79
+19b8a d 80 79
+19b97 6 82 79
+19b9d 2 85 79
+19b9f 1a 86 79
+19bb9 27 85 79
+19be0 b 87 79
+19beb b 89 79
+19bf6 12 91 79
+19c08 b 92 79
+19c13 13 89 79
+19c26 9 92 79
+19c2f 1 92 79
+19c30 c 108 79
+19c3c 23 113 79
+19c5f 1 113 79
+19c60 c 252 79
+19c6c 1b 254 79
+19c87 1 254 79
+19c88 15 311 79
+19c9d b 313 79
+19ca8 2a 315 79
+19cd2 12 318 79
+19ce4 23 319 79
+19d07 15 320 79
+19d1c c 321 79
+19d28 5a 323 79
+19d82 1c 327 79
+19d9e 35 328 79
+19dd3 16 323 79
+19de9 30 330 79
+19e19 10 343 79
+19e29 48 334 79
+19e71 21 338 79
+19e92 3d 339 79
+19ecf 13 334 79
+19ee2 b 339 79
+19eed 1c 342 79
+19f09 1e 343 79
+19f27 13 339 79
+19f3a 24 343 79
+19f5e e 348 79
+19f6c 1e 349 79
+19f8a e 350 79
+19f98 1d 353 79
+19fb5 8 354 79
+19fbd e 355 79
+19fcb 27 357 79
+19ff2 6 358 79
+19ff8 4d 361 79
+1a045 40 365 79
+1a085 18 367 79
+1a09d 44 368 79
+1a0e1 3 365 79
+1a0e4 19 361 79
+1a0fd 13 365 79
+1a110 e 368 79
+1a11e 3e 379 79
+1a15c 36 381 79
+1a192 12 384 79
+1a1a4 13 385 79
+1a1b7 2e 386 79
+1a1e5 e 368 79
+1a1f3 b 372 79
+1a1fe 39 374 79
+1a237 23 376 79
+1a25a b 377 79
+1a265 13 372 79
+1a278 8 386 79
+1a280 c 657 79
+1a28c 22 658 79
+1a2ae d 422 79
+1a2bb 15 424 79
+1a2d0 48 425 79
+1a318 41 427 79
+1a359 1 427 79
+1a35a d 441 79
+1a367 56 442 79
+1a3bd 1 442 79
+1a3be c 134 79
+1a3ca 7 135 79
+1a3d1 1 135 79
+FUNC 1a3d2 3f 0 copy<uint64*>
+1a3d2 c 298 79
+1a3de 22 300 79
+1a400 11 301 79
+1a411 1 301 79
+1a412 c 307 79
+1a41e 4 315 79
+1a422 1b 317 79
+1a43d 1 317 79
+FUNC 1a43e 27 0 copy_n<uint64**, uint64**>
+1a43e c 325 79
+1a44a 1b 326 79
+1a465 1 326 79
+1a466 c 376 79
+1a472 4 384 79
+1a476 4 385 79
+1a47a 1b 387 79
+1a495 1 387 79
+FUNC 1a496 60 0 copy_b<uint64*>
+1a496 d 422 79
+1a4a3 12 424 79
+1a4b5 2e 425 79
+1a4e3 13 426 79
+1a4f6 c 432 79
+1a502 4 440 79
+1a506 1b 443 79
+1a521 1 443 79
+FUNC 1a522 27 0 copy_b_n<uint64**, uint64**>
+1a522 c 451 79
+1a52e 1b 452 79
+1a549 1 452 79
+1a54a c 504 79
+1a556 4 514 79
+1a55a 4 515 79
+1a55e 1b 517 79
+1a579 1 517 79
+1a57a 13 723 79
+1a58d 1b 726 79
+1a5a8 9 727 79
+1a5b1 13 730 79
+1a5c4 39 732 79
+1a5fd b 735 79
+1a608 27 736 79
+1a62f 2f 740 79
+1a65e 26 748 79
+1a684 15 750 79
+1a699 36 751 79
+1a6cf 22 753 79
+1a6f1 1e 756 79
+1a70f 8 758 79
+1a717 9 759 79
+1a720 15 762 79
+1a735 24 763 79
+1a759 1 763 79
+1a75a e 1443 79
+1a768 2a 1445 79
+1a792 21 1447 79
+1a7b3 1 1447 79
+1a7b4 c 345 79
+1a7c0 e 347 79
+1a7ce 13 348 79
+1a7e1 18 349 79
+1a7f9 1e 352 79
+1a817 1b 353 79
+1a832 c 355 79
+1a83e 2 360 79
+1a840 c 1039 79
+1a84c 13 1041 79
+1a85f 1e 1044 79
+1a87d 11 1045 79
+1a88e 14 1048 79
+1a8a2 c 190 79
+1a8ae 14 191 79
+FUNC 1a8c2 27 0 copy_n<unsigned char*, unsigned char*>
+1a8c2 c 325 79
+1a8ce 1b 326 79
+1a8e9 1 326 79
+1a8ea c 376 79
+1a8f6 4 384 79
+1a8fa 4 385 79
+1a8fe 1b 387 79
+1a919 1 387 79
+1a91a c 73 79
+1a926 1b 74 79
+1a941 1 74 79
+1a942 c 108 79
+1a94e 23 113 79
+1a971 1 113 79
+1a972 c 252 79
+1a97e 1b 254 79
+1a999 1 254 79
+FUNC 1a99a 40 0 copy_n<__gnu_cxx::__normal_iterator<unsigned char*, std::vector<unsigned char, std::allocator<unsigned char> > >, unsigned char*>
+1a99a d 334 79
+1a9a7 33 335 79
+1a9da c 376 79
+1a9e6 4 384 79
+1a9ea 4 385 79
+1a9ee 1b 387 79
+1aa09 1 387 79
+1aa0a c 73 79
+1aa16 1b 74 79
+1aa31 1 74 79
+1aa32 c 108 79
+1aa3e 23 113 79
+1aa61 1 113 79
+1aa62 c 252 79
+1aa6e 1b 254 79
+1aa89 1 254 79
+FUNC 1aa8a 45 0 fill_n<__gnu_cxx::__normal_iterator<unsigned char*, std::vector<unsigned char, std::allocator<unsigned char> > >, long unsigned int, unsigned char>
+1aa8a c 614 79
+1aa96 9 616 79
+1aa9f 2 617 79
+1aaa1 13 618 79
+1aab4 16 617 79
+1aaca 5 619 79
+1aacf 1 619 79
+1aad0 c 636 79
+1aadc 4 641 79
+1aae0 1b 642 79
+1aafb 1 642 79
+1aafc c 182 79
+1ab08 1b 183 79
+1ab23 1 183 79
+1ab24 c 214 79
+1ab30 23 218 79
+1ab53 1 218 79
+1ab54 c 308 79
+1ab60 1b 310 79
+1ab7b 1 310 79
+1ab7c 14 311 79
+1ab90 b 313 79
+1ab9b 21 315 79
+1abbc 9 318 79
+1abc5 23 319 79
+1abe8 15 320 79
+1abfd c 321 79
+1ac09 4e 323 79
+1ac57 11 327 79
+1ac68 30 328 79
+1ac98 35 330 79
+1accd 48 334 79
+1ad15 14 338 79
+1ad29 43 339 79
+1ad6c 11 342 79
+1ad7d 1e 343 79
+1ad9b e 348 79
+1ada9 1e 349 79
+1adc7 e 350 79
+1add5 1d 353 79
+1adf2 8 354 79
+1adfa e 355 79
+1ae08 27 357 79
+1ae2f 6 358 79
+1ae35 4d 361 79
+1ae82 40 365 79
+1aec2 18 367 79
+1aeda 4d 368 79
+1af27 3e 379 79
+1af65 2d 381 79
+1af92 12 384 79
+1afa4 13 385 79
+1afb7 1f 386 79
+1afd6 c 657 79
+1afe2 22 658 79
+1b004 d 422 79
+1b011 15 424 79
+1b026 48 425 79
+1b06e 41 427 79
+1b0af 1 427 79
+1b0b0 c 441 79
+1b0bc 1f 442 79
+1b0db 1 442 79
+1b0dc c 106 79
+1b0e8 e 107 79
+1b0f6 d 328 79
+1b103 59 333 79
+1b15c d 229 79
+1b169 9 231 79
+1b172 b 232 79
+1b17d 1d 233 79
+1b19a c 142 79
+1b1a6 d 144 79
+1b1b3 f 145 79
+1b1c2 18 147 79
+1b1da b 148 79
+1b1e5 5 150 79
+FUNC 1b1ea 84 0 copy<std::_Deque_iterator<uint64, const uint64&, const uint64*>, std::_Deque_iterator<uint64, uint64&, uint64*> >
+1b1ea e 280 79
+1b1f8 17 283 79
+1b20f 20 285 79
+1b22f b 286 79
+1b23a b 287 79
+1b245 b 283 79
+1b250 1e 289 79
+1b26e 11 307 79
+1b27f 4 315 79
+1b283 69 317 79
+FUNC 1b2ec 7a 0 copy_n<std::_Deque_iterator<uint64, const uint64&, const uint64*>, std::_Deque_iterator<uint64, uint64&, uint64*> >
+1b2ec 11 325 79
+1b2fd 69 326 79
+1b366 11 376 79
+1b377 4 384 79
+1b37b 4 385 79
+1b37f 69 387 79
+1b3e8 11 73 79
+1b3f9 69 74 79
+1b462 11 108 79
+1b473 71 113 79
+1b4e4 11 252 79
+1b4f5 69 254 79
+1b55e 10 679 79
+1b56e 64 680 79
+1b5d2 e8 681 79
+1b6ba c 143 79
+1b6c6 14 144 79
+1b6da 6 144 79
+FUNC 1b6e0 4d 0 __eprintf
+1b6e0 6 1826 80
+1b6e6 3 1832 80
+1b6e9 c 1826 80
+1b6f5 29 1832 80
+1b71e a 1837 80
+1b728 5 1838 80
+1b72d e8d3 1838 80
diff --git a/src/common/mac/dump_syms.h b/src/common/mac/dump_syms.h
index 1b2bedc7..e234a6a6 100644
--- a/src/common/mac/dump_syms.h
+++ b/src/common/mac/dump_syms.h
@@ -30,9 +30,14 @@
 // dump_syms.h: Interface for DumpSymbols.  This class will take a mach-o file
 // and extract the symbol information and write it to a file using the
 // breakpad symbol file format.  
-// NOTE: Only Stabs format is currently supported -- not DWARF.
 
 #import <Foundation/Foundation.h>
+#include <mach-o/loader.h>
+#include "common/mac/dwarf/dwarf2reader.h"
+
+// This will map from an architecture string to a SectionMap, which
+// will contain the offsets for all the sections in the dictionary
+typedef hash_map<string, dwarf2reader::SectionMap *> ArchSectionMap;
 
 @interface DumpSymbols : NSObject {
  @protected
@@ -43,8 +48,9 @@
   NSMutableDictionary *sources_;      // Address and Source file paths (STRONG)
   NSMutableArray *cppAddresses_;      // Addresses of C++ symbols (STRONG)
   NSMutableDictionary *headers_;      // Mach-o header information (STRONG)
-  NSMutableDictionary *sectionNumbers_; // Keyed by seg/sect name (STRONG)
+  NSMutableDictionary *sectionData_; // Keyed by seg/sect name (STRONG)
   uint32_t   lastStartAddress_;
+  ArchSectionMap *sectionsForArch_;
 }
 
 - (id)initWithContentsOfFile:(NSString *)machoFile;
@@ -61,3 +67,14 @@
 - (BOOL)writeSymbolFile:(NSString *)symbolFilePath;
 
 @end
+
+@interface MachSection : NSObject {
+ @protected
+  struct section *sect_;
+  uint32_t sectionNumber_;
+}
+- (id)initWithMachSection:(struct section *)sect andNumber:(uint32_t)sectionNumber;
+- (struct section*)sectionPointer;
+- (uint32_t)sectionNumber;
+
+@end
diff --git a/src/common/mac/dump_syms.mm b/src/common/mac/dump_syms.mm
index 133c6ab2..d5ae55f8 100644
--- a/src/common/mac/dump_syms.mm
+++ b/src/common/mac/dump_syms.mm
@@ -47,6 +47,9 @@
 #import "dump_syms.h"
 #import "common/mac/file_id.h"
 #import "common/mac/macho_utilities.h"
+#import "common/mac/dwarf/dwarf2reader.h"
+#import "common/mac/dwarf/functioninfo.h"
+#import "common/mac/dwarf/bytereader.h"
 
 using google_breakpad::FileID;
 
@@ -65,6 +68,40 @@ static NSString *kUnknownSymbol = @"???";
 // for pruning out extraneous non-function symbols.
 static const int kTextSection = 1;
 
+namespace __gnu_cxx {
+template<> 
+  struct hash<std::string> {
+    size_t operator()(const std::string& k) const {
+      return hash< const char* >()( k.c_str() );
+  }
+};
+}
+
+// Dump FunctionMap to stdout.  Print address, function name, file
+// name, line number, lowpc, and highpc if available.
+void DumpFunctionMap(const dwarf2reader::FunctionMap function_map) {
+  for (dwarf2reader::FunctionMap::const_iterator iter = function_map.begin();
+       iter != function_map.end(); ++iter) {
+    if (iter->second->name.empty()) {
+      continue;
+    }
+    printf("%08llx: %s", iter->first,
+	   iter->second->name.data());
+    if (!iter->second->file.empty()) {
+      printf(" - %s", iter->second->file.data());
+      if (iter->second->line != 0) {
+	printf(":%u", iter->second->line);
+      }
+    }
+    if (iter->second->lowpc != 0 && iter->second->highpc != 0) {
+      printf(" (%08llx - %08llx)\n",
+	     iter->second->lowpc,
+	     iter->second->highpc);
+    }
+  }
+}
+
+
 @interface DumpSymbols(PrivateMethods)
 - (NSArray *)convertCPlusPlusSymbols:(NSArray *)symbols;
 - (void)convertSymbols;
@@ -73,10 +110,17 @@ static const int kTextSection = 1;
 - (BOOL)loadSymbolInfo:(void *)base offset:(uint32_t)offset;
 - (BOOL)loadSymbolInfo64:(void *)base offset:(uint32_t)offset;
 - (BOOL)loadSymbolInfoForArchitecture;
+- (BOOL)loadDWARFSymbolInfo:(void *)base offset:(uint32_t)offset;
+- (BOOL)loadSTABSSymbolInfo:(void *)base offset:(uint32_t)offset;
 - (void)generateSectionDictionary:(struct mach_header*)header;
 - (BOOL)loadHeader:(void *)base offset:(uint32_t)offset;
 - (BOOL)loadHeader64:(void *)base offset:(uint32_t)offset;
 - (BOOL)loadModuleInfo;
+- (void)processDWARFLineNumberInfo:(dwarf2reader::LineMap*)line_map;
+- (void)processDWARFFunctionInfo:(dwarf2reader::FunctionMap*)address_to_funcinfo;
+- (void)processDWARFSourceFileInfo:(vector<dwarf2reader::SourceFileInfo>*) files;
+- (BOOL)loadSymbolInfo:(void *)base offset:(uint32_t)offset;
+- (dwarf2reader::SectionMap*)getSectionMapForArchitecture:(NSString*)architecture;
 @end
 
 @implementation DumpSymbols
@@ -241,6 +285,7 @@ static const int kTextSection = 1;
   if (line && ![dict objectForKey:kAddressSourceLineKey])
     [dict setObject:[NSNumber numberWithUnsignedInt:line]
              forKey:kAddressSourceLineKey];
+
 }
 
 //=============================================================================
@@ -277,7 +322,9 @@ static const int kTextSection = 1;
   int line = list->n_desc;
   
   // __TEXT __text section
-  uint32_t mainSection = [[sectionNumbers_ objectForKey:@"__TEXT__text" ] unsignedLongValue];
+  NSMutableDictionary *archSections = [sectionData_ objectForKey:architecture_];
+
+  uint32_t mainSection = [[archSections objectForKey:@"__TEXT__text" ] sectionNumber];
 
   // Extract debugging information:
   // Doc: http://developer.apple.com/documentation/DeveloperTools/gdb/stabs/stabs_toc.html
@@ -303,7 +350,7 @@ static const int kTextSection = 1;
         sources_ = [[NSMutableDictionary alloc] init];
       // Save the source associated with an address
       [sources_ setObject:src forKey:address];
-
+      NSLog(@"Setting source %@ for %@", src, address);
       result = YES;
     }
   } else if (list->n_type == N_FUN) {
@@ -321,7 +368,7 @@ static const int kTextSection = 1;
     [self addFunction:fn line:line address:list->n_value section:list->n_sect ];
 
     result = YES;
-  } else if (list->n_type == N_SLINE && list->n_sect == mainSection ) {
+  } else if (list->n_type == N_SLINE && list->n_sect == mainSection) {
     [self addFunction:nil line:line address:list->n_value section:list->n_sect ];
     result = YES;
   } else if (((list->n_type & N_TYPE) == N_SECT) && !(list->n_type & N_STAB)) {
@@ -339,8 +386,155 @@ static const int kTextSection = 1;
 #define SwapLongIfNeeded(a) (swap ? NXSwapLong(a) : (a))
 #define SwapIntIfNeeded(a) (swap ? NXSwapInt(a) : (a))
 #define SwapShortIfNeeded(a) (swap ? NXSwapShort(a) : (a))
+
 //=============================================================================
 - (BOOL)loadSymbolInfo:(void *)base offset:(uint32_t)offset {
+  NSMutableDictionary *archSections = [sectionData_ objectForKey:architecture_];
+  if ([archSections objectForKey:@"__DWARF__debug_info"]) {
+    // Treat this this as debug information
+    return [self loadDWARFSymbolInfo:base offset:offset];
+  }
+
+  return [self loadSTABSSymbolInfo:base offset:offset];
+}
+
+//=============================================================================
+- (BOOL)loadDWARFSymbolInfo:(void *)base offset:(uint32_t)offset {
+
+  struct mach_header *header = (struct mach_header *) 
+    ((uint32_t)base + offset);
+  BOOL swap = (header->magic == MH_CIGAM);
+
+  NSMutableDictionary *archSections = [sectionData_ objectForKey:architecture_];
+  assert (archSections != nil);
+  section *dbgInfoSection = [[archSections objectForKey:@"__DWARF__debug_info"] sectionPointer];
+  uint32_t debugInfoSize = SwapLongIfNeeded(dbgInfoSection->size);
+
+  // i think this will break if run on a big-endian machine
+  dwarf2reader::ByteReader byte_reader(swap ?
+                                       dwarf2reader::ENDIANNESS_BIG :
+                                       dwarf2reader::ENDIANNESS_LITTLE);
+
+  uint64_t dbgOffset = 0;
+
+  dwarf2reader::SectionMap* oneArchitectureSectionMap = [self getSectionMapForArchitecture:architecture_];
+
+  while (dbgOffset < debugInfoSize) {
+    // Prepare necessary objects.
+    dwarf2reader::FunctionMap off_to_funcinfo;
+    dwarf2reader::FunctionMap address_to_funcinfo;
+    dwarf2reader::LineMap line_map;
+    vector<dwarf2reader::SourceFileInfo> files;
+    vector<string> dirs;
+
+    dwarf2reader::CULineInfoHandler line_info_handler(&files, &dirs,
+						      &line_map);
+
+    dwarf2reader::CUFunctionInfoHandler function_info_handler(&files, &dirs,
+                                                              &line_map,
+                                                              &off_to_funcinfo,
+                                                              &address_to_funcinfo,
+							      &line_info_handler,
+                                                              *oneArchitectureSectionMap,
+                                                              &byte_reader);
+
+    dwarf2reader::CompilationUnit compilation_unit(*oneArchitectureSectionMap,
+                                                   dbgOffset,
+                                                   &byte_reader,
+                                                   &function_info_handler);
+
+    dbgOffset += compilation_unit.Start();
+
+    // The next 3 functions take the info that the dwarf reader
+    // gives and massages them into the data structures that
+    // dump_syms uses 
+    [self processDWARFSourceFileInfo:&files];
+    [self processDWARFFunctionInfo:&address_to_funcinfo];
+    [self processDWARFLineNumberInfo:&line_map];
+  }
+
+  return YES;
+}
+
+- (void)processDWARFSourceFileInfo:(vector<dwarf2reader::SourceFileInfo>*) files {
+  if (!sources_)
+    sources_ = [[NSMutableDictionary alloc] init];
+  // Save the source associated with an address
+  vector<dwarf2reader::SourceFileInfo>::const_iterator iter = files->begin();
+  for (; iter != files->end(); iter++) {
+    NSString *sourceFile = [NSString stringWithUTF8String:(*iter).name.c_str()];
+    if ((*iter).lowpc != ULLONG_MAX) {
+      NSNumber *address = [NSNumber numberWithUnsignedLongLong:(*iter).lowpc];
+      [sources_ setObject:sourceFile forKey:address];
+    }
+  }
+}
+  
+- (void)processDWARFFunctionInfo:(dwarf2reader::FunctionMap*)address_to_funcinfo {
+  for (dwarf2reader::FunctionMap::const_iterator iter = address_to_funcinfo->begin();
+       iter != address_to_funcinfo->end(); ++iter) {
+    if (iter->second->name.empty()) {
+      continue;
+    }
+
+    if (!addresses_)
+      addresses_ = [[NSMutableDictionary alloc] init];
+
+    NSNumber *addressNum = [NSNumber numberWithUnsignedLongLong:(*iter).second->lowpc];
+	
+    [functionAddresses_ addObject:addressNum];
+
+    NSMutableDictionary *dict = [addresses_ objectForKey:addressNum];
+
+    if (!dict) {
+      dict = [[NSMutableDictionary alloc] init];
+      [addresses_ setObject:dict forKey:addressNum];
+      [dict release];
+    } 
+	
+    // set name of function if it isn't already set
+    if (![dict objectForKey:kAddressSymbolKey]) {
+      NSString *symbolName = [NSString stringWithUTF8String:iter->second->name.c_str()];
+      [dict setObject:symbolName forKey:kAddressSymbolKey];
+    }
+  
+    // set line number for beginning of function
+    if (![dict objectForKey:kAddressSourceLineKey])
+      [dict setObject:[NSNumber numberWithUnsignedInt:iter->second->line]
+	    forKey:kAddressSourceLineKey];
+
+    // set function size by subtracting low PC from high PC
+    if (![dict objectForKey:kFunctionSizeKey]) {
+      [dict setObject:[NSNumber numberWithUnsignedLongLong:iter->second->highpc - iter->second->lowpc]
+	    forKey:kFunctionSizeKey];
+    }
+
+  }
+}
+
+- (void)processDWARFLineNumberInfo:(dwarf2reader::LineMap*)line_map {
+  for (dwarf2reader::LineMap::const_iterator iter = line_map->begin();
+       iter != line_map->end(); 
+       ++iter) {
+
+    NSNumber *addressNum = [NSNumber numberWithUnsignedLongLong:iter->first];
+    NSMutableDictionary *dict = [addresses_ objectForKey:addressNum];
+
+    if (!dict) {
+      dict = [[NSMutableDictionary alloc] init];
+      [addresses_ setObject:dict forKey:addressNum];
+      [dict release];
+    } 
+	
+    if (![dict objectForKey:kAddressSourceLineKey]) {
+      [dict setObject:[NSNumber numberWithUnsignedInt:iter->second.second]
+	    forKey:kAddressSourceLineKey];
+    }
+  }
+}
+
+//=============================================================================
+- (BOOL)loadSTABSSymbolInfo:(void *)base offset:(uint32_t)offset {
   struct mach_header *header = (struct mach_header *)((uint32_t)base + offset);
   BOOL swap = (header->magic == MH_CIGAM);
   uint32_t count = SwapLongIfNeeded(header->ncmds);
@@ -434,6 +628,7 @@ static const int kTextSection = 1;
 - (BOOL)loadSymbolInfoForArchitecture {
   NSMutableData *data = [[NSMutableData alloc]
     initWithContentsOfMappedFile:sourcePath_];
+
   NSDictionary *headerInfo = [headers_ objectForKey:architecture_];
   void *base = [data mutableBytes];
   uint32_t offset =
@@ -446,10 +641,28 @@ static const int kTextSection = 1;
   return result;
 }
 
+- (dwarf2reader::SectionMap*)getSectionMapForArchitecture:(NSString*)architecture {
+
+  string currentArch([architecture UTF8String]);
+  dwarf2reader::SectionMap *oneArchitectureSectionMap;
+
+  ArchSectionMap::const_iterator iter = sectionsForArch_->find(currentArch);
+  
+  if (iter == sectionsForArch_->end()) {
+    oneArchitectureSectionMap = new dwarf2reader::SectionMap();
+    sectionsForArch_->insert(make_pair(currentArch, oneArchitectureSectionMap));
+  } else {
+    oneArchitectureSectionMap = iter->second;
+  }
+    
+  return oneArchitectureSectionMap;
+}
+
 //=============================================================================
 // build a dictionary of section numbers keyed off a string
 // which is the concatenation of the segment name and the section name
 - (void)generateSectionDictionary:(struct mach_header*)header {
+
   BOOL swap = (header->magic == MH_CIGAM);
   uint32_t count = SwapLongIfNeeded(header->ncmds);
   struct load_command *cmd =
@@ -457,8 +670,29 @@ static const int kTextSection = 1;
   uint32_t segmentCommand = SwapLongIfNeeded(LC_SEGMENT);
   uint32_t sectionNumber = 1;   // section numbers are counted from 1
   
-  if (!sectionNumbers_)
-    sectionNumbers_ = [[NSMutableDictionary alloc] init];
+  cpu_type_t cpu = SwapIntIfNeeded(header->cputype);
+
+  NSString *arch;
+
+  if (cpu & CPU_ARCH_ABI64)
+    arch = ((cpu & ~CPU_ARCH_ABI64) == CPU_TYPE_X86) ?
+      @"x86_64" : @"ppc64";
+  else
+    arch = (cpu == CPU_TYPE_X86) ? @"x86" : @"ppc";
+
+  NSMutableDictionary *archSections;
+
+  if (!sectionData_) {
+    sectionData_ = [[NSMutableDictionary alloc] init];
+  }
+  
+  if (![sectionData_ objectForKey:architecture_]) {
+    [sectionData_ setObject:[[NSMutableDictionary alloc] init] forKey:arch];
+  }
+
+  archSections = [sectionData_ objectForKey:arch];
+
+  dwarf2reader::SectionMap* oneArchitectureSectionMap = [self getSectionMapForArchitecture:arch];
   
   // loop through every segment command, then through every section
   // contained inside each of them
@@ -469,13 +703,18 @@ static const int kTextSection = 1;
       uint32_t nsects = SwapLongIfNeeded(seg->nsects);
       
       for (uint32_t j = 0; j < nsects; ++j) {
-        //printf("%d: %s %s\n", sectionNumber, seg->segname, sect->sectname );
         NSString *segSectName = [NSString stringWithFormat:@"%s%s",
-          seg->segname, sect->sectname ];
-        
-        [sectionNumbers_ setValue:[NSNumber numberWithUnsignedLong:sectionNumber]
-          forKey:segSectName ];
+          seg->segname, sect->sectname];
         
+        [archSections setObject:[[MachSection alloc] initWithMachSection:sect andNumber:sectionNumber]
+		      forKey:segSectName];
+
+	// filter out sections with size 0, offset 0
+	if (sect->offset != 0 && sect->size != 0) {
+	  // fill sectionmap for dwarf reader
+	  oneArchitectureSectionMap->insert(make_pair(sect->sectname,make_pair(((const char*)header) + SwapLongIfNeeded(sect->offset), (size_t)SwapLongIfNeeded(sect->size))));
+	}
+
         ++sect;
         ++sectionNumber;
       }
@@ -825,6 +1064,49 @@ static BOOL WriteFormat(int fd, const char *fmt, ...) {
 
     sourcePath_ = [path copy];
 
+    // Test for .DSYM bundle
+    NSBundle *dsymBundle = [NSBundle bundleWithPath:sourcePath_];
+
+    if (dsymBundle) {
+
+      // we need to take the DSYM bundle path and remove it's
+      // extension to get the name of the file inside the resources
+      // directory of the bundle that actually has the DWARF
+      // information
+      // But, Xcode supports something called "Wrapper extension"(see
+      // build settings), which would make the bundle name
+      // /tmp/foo/test.kext.dSYM, but the dwarf binary name would
+      // still be "test".  so, now we loop through until deleting the
+      // extension doesn't change the string
+
+      // e.g. suppose sourcepath_ is /tmp/foo/test.dSYM
+
+      NSString *dwarfBinName = [[sourcePath_ lastPathComponent] stringByDeletingPathExtension];
+
+      // now, dwarfBinName is "test"
+
+      while (![[dwarfBinName stringByDeletingPathExtension] isEqualToString:dwarfBinName]) {
+        dwarfBinName = [dwarfBinName stringByDeletingPathExtension];
+      }
+
+      NSString *dwarfBinPath;
+      dwarfBinPath = [dsymBundle pathForResource:dwarfBinName ofType:nil inDirectory:@"DWARF"];
+
+      if (dwarfBinPath == nil) {
+        NSLog(@"The bundle passed on the command line does not appear to be a DWARF dSYM bundle");
+        [self autorelease];
+        return nil;
+      }
+
+      // otherwise we're good to go
+      [sourcePath_ release];
+
+      sourcePath_ = [dwarfBinPath copy];
+      NSLog(@"Loading DWARF dSYM file from %@", sourcePath_);
+    }
+
+    sectionsForArch_ = new ArchSectionMap();
+
     if (![self loadModuleInfo]) {
       [self autorelease];
       return nil;
@@ -868,7 +1150,8 @@ static BOOL WriteFormat(int fd, const char *fmt, ...) {
   [functionAddresses_ release];
   [sources_ release];
   [headers_ release];
-  
+  delete sectionsForArch_;
+
   [super dealloc];
 }
 
@@ -899,7 +1182,7 @@ static BOOL WriteFormat(int fd, const char *fmt, ...) {
       return NO;
 
     [architecture_ autorelease];
-    architecture_ = [architecture copy];
+    architecture_ = [normalized copy];
   }
 
   return isValid;
@@ -931,3 +1214,23 @@ static BOOL WriteFormat(int fd, const char *fmt, ...) {
 }
 
 @end
+
+@implementation MachSection 
+
+- (id)initWithMachSection:(section *)sect andNumber:(uint32_t)sectionNumber {
+  if ((self = [super init])) {
+    sect_ = sect;
+    sectionNumber_ = sectionNumber;
+  }
+
+  return self;
+}
+
+- (section*)sectionPointer {
+  return sect_;
+}
+
+- (uint32_t)sectionNumber {
+  return sectionNumber_;
+}
+@end
diff --git a/src/common/mac/dwarf/bytereader-inl.h b/src/common/mac/dwarf/bytereader-inl.h
new file mode 100644
index 00000000..7ccd0fe6
--- /dev/null
+++ b/src/common/mac/dwarf/bytereader-inl.h
@@ -0,0 +1,141 @@
+// Copyright 2006 Google Inc. All Rights Reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+#ifndef UTIL_DEBUGINFO_BYTEREADER_INL_H__
+#define UTIL_DEBUGINFO_BYTEREADER_INL_H__
+
+#include "common/mac/dwarf/bytereader.h"
+
+namespace dwarf2reader {
+
+inline uint8 ByteReader::ReadOneByte(const char* buffer) const {
+  return buffer[0];
+}
+
+inline uint16 ByteReader::ReadTwoBytes(const char* buffer) const {
+  const uint16 buffer0 = static_cast<uint16>(buffer[0]);
+  const uint16 buffer1 = static_cast<uint16>(buffer[1]);
+  if (endian_ == ENDIANNESS_LITTLE) {
+    return buffer0 | buffer1 << 8;
+  } else {
+    return buffer1 | buffer0 << 8;
+  }
+}
+
+inline uint64 ByteReader::ReadFourBytes(const char* buffer) const {
+  const uint32 buffer0 = static_cast<uint32>(buffer[0]);
+  const uint32 buffer1 = static_cast<uint32>(buffer[1]);
+  const uint32 buffer2 = static_cast<uint32>(buffer[2]);
+  const uint32 buffer3 = static_cast<uint32>(buffer[3]);
+  if (endian_ == ENDIANNESS_LITTLE) {
+    return buffer0 | buffer1 << 8 | buffer2 << 16 | buffer3 << 24;
+  } else {
+    return buffer3 | buffer2 << 8 | buffer1 << 16 | buffer0 << 24;
+  }
+}
+
+inline uint64 ByteReader::ReadEightBytes(const char* buffer) const {
+  const uint64 buffer0 = static_cast<uint64>(buffer[0]);
+  const uint64 buffer1 = static_cast<uint64>(buffer[1]);
+  const uint64 buffer2 = static_cast<uint64>(buffer[2]);
+  const uint64 buffer3 = static_cast<uint64>(buffer[3]);
+  const uint64 buffer4 = static_cast<uint64>(buffer[4]);
+  const uint64 buffer5 = static_cast<uint64>(buffer[5]);
+  const uint64 buffer6 = static_cast<uint64>(buffer[6]);
+  const uint64 buffer7 = static_cast<uint64>(buffer[7]);
+  if (endian_ == ENDIANNESS_LITTLE) {
+    return buffer0 | buffer1 << 8 | buffer2 << 16 | buffer3 << 24 |
+      buffer4 << 32 | buffer5 << 40 | buffer6 << 48 | buffer7 << 56;
+  } else {
+    return buffer7 | buffer6 << 8 | buffer5 << 16 | buffer4 << 24 |
+      buffer3 << 32 | buffer2 << 40 | buffer1 << 48 | buffer0 << 56;
+  }
+}
+
+// Read an unsigned LEB128 number.  Each byte contains 7 bits of
+// information, plus one bit saying whether the number continues or
+// not.
+
+inline uint64 ByteReader::ReadUnsignedLEB128(const char* buffer,
+                                             size_t* len) const {
+  uint64 result = 0;
+  size_t num_read = 0;
+  unsigned int shift = 0;
+  unsigned char byte;
+
+  do {
+    byte = *buffer++;
+    num_read++;
+
+    result |= (static_cast<uint64>(byte & 0x7f)) << shift;
+
+    shift += 7;
+
+  } while (byte & 0x80);
+
+  *len = num_read;
+
+  return result;
+}
+
+// Read a signed LEB128 number.  These are like regular LEB128
+// numbers, except the last byte may have a sign bit set.
+
+inline int64 ByteReader::ReadSignedLEB128(const char* buffer,
+                                          size_t* len) const {
+  int64 result = 0;
+  unsigned int shift = 0;
+  size_t num_read = 0;
+  unsigned char byte;
+
+  do {
+      byte = *buffer++;
+      num_read++;
+      result |= (static_cast<uint64>(byte & 0x7f) << shift);
+      shift += 7;
+  } while (byte & 0x80);
+
+  if ((shift < 8 * sizeof (result)) && (byte & 0x40))
+    result |= -((static_cast<int64>(1)) << shift);
+  *len = num_read;
+  return result;
+}
+
+inline uint64 ByteReader::ReadOffset(const char* buffer) const {
+  assert(this->offset_reader_);
+  return (this->*offset_reader_)(buffer);
+}
+
+inline uint64 ByteReader::ReadAddress(const char* buffer) const {
+  assert(this->address_reader_);
+  return (this->*address_reader_)(buffer);
+}
+
+}  // namespace dwarf2reader
+
+#endif  // UTIL_DEBUGINFO_BYTEREADER_INL_H__
diff --git a/src/common/mac/dwarf/bytereader.cc b/src/common/mac/dwarf/bytereader.cc
new file mode 100644
index 00000000..823cf2b6
--- /dev/null
+++ b/src/common/mac/dwarf/bytereader.cc
@@ -0,0 +1,62 @@
+// Copyright 2006 Google Inc. All Rights Reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+#include "common/mac/dwarf/bytereader-inl.h"
+
+#include "common/mac/dwarf/bytereader.h"
+
+namespace dwarf2reader {
+
+ByteReader::ByteReader(enum Endianness endian)
+    :offset_reader_(NULL), address_reader_(NULL), endian_(endian),
+     address_size_(0), offset_size_(0)
+{ }
+
+ByteReader::~ByteReader() { }
+
+void ByteReader::SetOffsetSize(uint8 size) {
+  offset_size_ = size;
+  assert(size == 4 || size == 8);
+  if (size == 4) {
+    this->offset_reader_ = &ByteReader::ReadFourBytes;
+  } else {
+    this->offset_reader_ = &ByteReader::ReadEightBytes;
+  }
+}
+
+void ByteReader::SetAddressSize(uint8 size) {
+  address_size_ = size;
+  assert(size == 4 || size == 8);
+  if (size == 4) {
+    this->address_reader_ = &ByteReader::ReadFourBytes;
+  } else {
+    this->address_reader_ = &ByteReader::ReadEightBytes;
+  }
+}
+
+}  // namespace dwarf2reader
diff --git a/src/common/mac/dwarf/bytereader.h b/src/common/mac/dwarf/bytereader.h
new file mode 100644
index 00000000..299dd9ac
--- /dev/null
+++ b/src/common/mac/dwarf/bytereader.h
@@ -0,0 +1,132 @@
+// Copyright 2006 Google Inc. All Rights Reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+#ifndef COMMON_MAC_DWARF_BYTEREADER_H__
+#define COMMON_MAC_DWARF_BYTEREADER_H__
+
+#include <string>
+#include "common/mac/dwarf/types.h"
+
+namespace dwarf2reader {
+
+// We can't use the obvious name of LITTLE_ENDIAN and BIG_ENDIAN
+// because it conflicts with a macro
+enum Endianness {
+  ENDIANNESS_BIG,
+  ENDIANNESS_LITTLE
+};
+
+// Class that knows how to read both big endian and little endian
+// numbers, for use in DWARF2/3 reader.
+// Takes an endianness argument.
+// To read addresses and offsets, SetAddressSize and SetOffsetSize
+// must be called first.
+class ByteReader {
+ public:
+  explicit ByteReader(enum Endianness endian);
+  virtual ~ByteReader();
+
+  // Set the address size to SIZE, which sets up the ReadAddress member
+  // so that it works.
+  void SetAddressSize(uint8 size);
+
+  // Set the offset size to SIZE, which sets up the ReadOffset member
+  // so that it works.
+  void SetOffsetSize(uint8 size);
+
+  // Return the current offset size
+  uint8 OffsetSize() const { return offset_size_; }
+
+  // Return the current address size
+  uint8 AddressSize() const { return address_size_; }
+
+  // Read a single byte from BUFFER and return it as an unsigned 8 bit
+  // number.
+  uint8 ReadOneByte(const char* buffer) const;
+
+  // Read two bytes from BUFFER and return it as an unsigned 16 bit
+  // number.
+  uint16 ReadTwoBytes(const char* buffer) const;
+
+  // Read four bytes from BUFFER and return it as an unsigned 32 bit
+  // number.  This function returns a uint64 so that it is compatible
+  // with ReadAddress and ReadOffset.  The number it returns will
+  // never be outside the range of an unsigned 32 bit integer.
+  uint64 ReadFourBytes(const char* buffer) const;
+
+  // Read eight bytes from BUFFER and return it as an unsigned 64 bit
+  // number
+  uint64 ReadEightBytes(const char* buffer) const;
+
+  // Read an unsigned LEB128 (Little Endian Base 128) number from
+  // BUFFER and return it as an unsigned 64 bit integer.  LEN is set
+  // to the length read.  Everybody seems to reinvent LEB128 as a
+  // variable size integer encoding, DWARF has had it for a long time.
+  uint64 ReadUnsignedLEB128(const char* buffer, size_t* len) const;
+
+  // Read a signed LEB128 number from BUFFER and return it as an
+  // signed 64 bit integer.  LEN is set to the length read.
+  int64 ReadSignedLEB128(const char* buffer, size_t* len) const;
+
+  // Read an offset from BUFFER and return it as an unsigned 64 bit
+  // integer.  DWARF2/3 define offsets as either 4 or 8 bytes,
+  // generally depending on the amount of DWARF2/3 info present.
+  uint64 ReadOffset(const char* buffer) const;
+
+  // Read an address from BUFFER and return it as an unsigned 64 bit
+  // integer.  DWARF2/3 allow addresses to be any size from 0-255
+  // bytes currently.  Internally we support 4 and 8 byte addresses,
+  // and will CHECK on anything else.
+  uint64 ReadAddress(const char* buffer) const;
+
+ private:
+
+  // Function pointer type for our address and offset readers.
+  typedef uint64 (ByteReader::*AddressReader)(const char*) const;
+
+  // Read an offset from BUFFER and return it as an unsigned 64 bit
+  // integer.  DWARF2/3 define offsets as either 4 or 8 bytes,
+  // generally depending on the amount of DWARF2/3 info present.
+  // This function pointer gets set by SetOffsetSize.
+  AddressReader offset_reader_;
+
+  // Read an address from BUFFER and return it as an unsigned 64 bit
+  // integer.  DWARF2/3 allow addresses to be any size from 0-255
+  // bytes currently.  Internally we support 4 and 8 byte addresses,
+  // and will CHECK on anything else.
+  // This function pointer gets set by SetAddressSize.
+  AddressReader address_reader_;
+
+  Endianness endian_;
+  uint8 address_size_;
+  uint8 offset_size_;
+};
+
+}  // namespace dwarf2reader
+
+#endif  // COMMON_MAC_DWARF_BYTEREADER_H__
diff --git a/src/common/mac/dwarf/dwarf2enums.h b/src/common/mac/dwarf/dwarf2enums.h
new file mode 100644
index 00000000..c52e2b47
--- /dev/null
+++ b/src/common/mac/dwarf/dwarf2enums.h
@@ -0,0 +1,490 @@
+// Copyright 2006 Google Inc. All Rights Reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+#ifndef COMMON_MAC_DWARF_DWARF2ENUMS_H__
+#define COMMON_MAC_DWARF_DWARF2ENUMS_H__
+
+namespace dwarf2reader {
+
+// These enums do not follow the google3 style only because they are
+// known universally (specs, other implementations) by the names in
+// exactly this capitalization.
+// Tag names and codes.
+enum DwarfTag {
+  DW_TAG_padding = 0x00,
+  DW_TAG_array_type = 0x01,
+  DW_TAG_class_type = 0x02,
+  DW_TAG_entry_point = 0x03,
+  DW_TAG_enumeration_type = 0x04,
+  DW_TAG_formal_parameter = 0x05,
+  DW_TAG_imported_declaration = 0x08,
+  DW_TAG_label = 0x0a,
+  DW_TAG_lexical_block = 0x0b,
+  DW_TAG_member = 0x0d,
+  DW_TAG_pointer_type = 0x0f,
+  DW_TAG_reference_type = 0x10,
+  DW_TAG_compile_unit = 0x11,
+  DW_TAG_string_type = 0x12,
+  DW_TAG_structure_type = 0x13,
+  DW_TAG_subroutine_type = 0x15,
+  DW_TAG_typedef = 0x16,
+  DW_TAG_union_type = 0x17,
+  DW_TAG_unspecified_parameters = 0x18,
+  DW_TAG_variant = 0x19,
+  DW_TAG_common_block = 0x1a,
+  DW_TAG_common_inclusion = 0x1b,
+  DW_TAG_inheritance = 0x1c,
+  DW_TAG_inlined_subroutine = 0x1d,
+  DW_TAG_module = 0x1e,
+  DW_TAG_ptr_to_member_type = 0x1f,
+  DW_TAG_set_type = 0x20,
+  DW_TAG_subrange_type = 0x21,
+  DW_TAG_with_stmt = 0x22,
+  DW_TAG_access_declaration = 0x23,
+  DW_TAG_base_type = 0x24,
+  DW_TAG_catch_block = 0x25,
+  DW_TAG_const_type = 0x26,
+  DW_TAG_constant = 0x27,
+  DW_TAG_enumerator = 0x28,
+  DW_TAG_file_type = 0x29,
+  DW_TAG_friend = 0x2a,
+  DW_TAG_namelist = 0x2b,
+  DW_TAG_namelist_item = 0x2c,
+  DW_TAG_packed_type = 0x2d,
+  DW_TAG_subprogram = 0x2e,
+  DW_TAG_template_type_param = 0x2f,
+  DW_TAG_template_value_param = 0x30,
+  DW_TAG_thrown_type = 0x31,
+  DW_TAG_try_block = 0x32,
+  DW_TAG_variant_part = 0x33,
+  DW_TAG_variable = 0x34,
+  DW_TAG_volatile_type = 0x35,
+  // DWARF 3.
+  DW_TAG_dwarf_procedure = 0x36,
+  DW_TAG_restrict_type = 0x37,
+  DW_TAG_interface_type = 0x38,
+  DW_TAG_namespace = 0x39,
+  DW_TAG_imported_module = 0x3a,
+  DW_TAG_unspecified_type = 0x3b,
+  DW_TAG_partial_unit = 0x3c,
+  DW_TAG_imported_unit = 0x3d,
+  // SGI/MIPS Extensions.
+  DW_TAG_MIPS_loop = 0x4081,
+  // HP extensions.  See:
+  // ftp://ftp.hp.com/pub/lang/tools/WDB/wdb-4.0.tar.gz
+  DW_TAG_HP_array_descriptor = 0x4090,
+  // GNU extensions.
+  DW_TAG_format_label = 0x4101,  // For FORTRAN 77 and Fortran 90.
+  DW_TAG_function_template = 0x4102,  // For C++.
+  DW_TAG_class_template = 0x4103,  // For C++.
+  DW_TAG_GNU_BINCL = 0x4104,
+  DW_TAG_GNU_EINCL = 0x4105,
+  // Extensions for UPC.  See: http://upc.gwu.edu/~upc.
+  DW_TAG_upc_shared_type = 0x8765,
+  DW_TAG_upc_strict_type = 0x8766,
+  DW_TAG_upc_relaxed_type = 0x8767,
+  // PGI (STMicroelectronics) extensions.  No documentation available.
+  DW_TAG_PGI_kanji_type      = 0xA000,
+  DW_TAG_PGI_interface_block = 0xA020
+};
+
+
+enum DwarfHasChild {
+  DW_children_no = 0,
+  DW_children_yes = 1
+};
+
+// Form names and codes.
+enum DwarfForm {
+  DW_FORM_addr = 0x01,
+  DW_FORM_block2 = 0x03,
+  DW_FORM_block4 = 0x04,
+  DW_FORM_data2 = 0x05,
+  DW_FORM_data4 = 0x06,
+  DW_FORM_data8 = 0x07,
+  DW_FORM_string = 0x08,
+  DW_FORM_block = 0x09,
+  DW_FORM_block1 = 0x0a,
+  DW_FORM_data1 = 0x0b,
+  DW_FORM_flag = 0x0c,
+  DW_FORM_sdata = 0x0d,
+  DW_FORM_strp = 0x0e,
+  DW_FORM_udata = 0x0f,
+  DW_FORM_ref_addr = 0x10,
+  DW_FORM_ref1 = 0x11,
+  DW_FORM_ref2 = 0x12,
+  DW_FORM_ref4 = 0x13,
+  DW_FORM_ref8 = 0x14,
+  DW_FORM_ref_udata = 0x15,
+  DW_FORM_indirect = 0x16
+};
+
+// Attribute names and codes
+enum DwarfAttribute {
+  DW_AT_sibling = 0x01,
+  DW_AT_location = 0x02,
+  DW_AT_name = 0x03,
+  DW_AT_ordering = 0x09,
+  DW_AT_subscr_data = 0x0a,
+  DW_AT_byte_size = 0x0b,
+  DW_AT_bit_offset = 0x0c,
+  DW_AT_bit_size = 0x0d,
+  DW_AT_element_list = 0x0f,
+  DW_AT_stmt_list = 0x10,
+  DW_AT_low_pc = 0x11,
+  DW_AT_high_pc = 0x12,
+  DW_AT_language = 0x13,
+  DW_AT_member = 0x14,
+  DW_AT_discr = 0x15,
+  DW_AT_discr_value = 0x16,
+  DW_AT_visibility = 0x17,
+  DW_AT_import = 0x18,
+  DW_AT_string_length = 0x19,
+  DW_AT_common_reference = 0x1a,
+  DW_AT_comp_dir = 0x1b,
+  DW_AT_const_value = 0x1c,
+  DW_AT_containing_type = 0x1d,
+  DW_AT_default_value = 0x1e,
+  DW_AT_inline = 0x20,
+  DW_AT_is_optional = 0x21,
+  DW_AT_lower_bound = 0x22,
+  DW_AT_producer = 0x25,
+  DW_AT_prototyped = 0x27,
+  DW_AT_return_addr = 0x2a,
+  DW_AT_start_scope = 0x2c,
+  DW_AT_stride_size = 0x2e,
+  DW_AT_upper_bound = 0x2f,
+  DW_AT_abstract_origin = 0x31,
+  DW_AT_accessibility = 0x32,
+  DW_AT_address_class = 0x33,
+  DW_AT_artificial = 0x34,
+  DW_AT_base_types = 0x35,
+  DW_AT_calling_convention = 0x36,
+  DW_AT_count = 0x37,
+  DW_AT_data_member_location = 0x38,
+  DW_AT_decl_column = 0x39,
+  DW_AT_decl_file = 0x3a,
+  DW_AT_decl_line = 0x3b,
+  DW_AT_declaration = 0x3c,
+  DW_AT_discr_list = 0x3d,
+  DW_AT_encoding = 0x3e,
+  DW_AT_external = 0x3f,
+  DW_AT_frame_base = 0x40,
+  DW_AT_friend = 0x41,
+  DW_AT_identifier_case = 0x42,
+  DW_AT_macro_info = 0x43,
+  DW_AT_namelist_items = 0x44,
+  DW_AT_priority = 0x45,
+  DW_AT_segment = 0x46,
+  DW_AT_specification = 0x47,
+  DW_AT_static_link = 0x48,
+  DW_AT_type = 0x49,
+  DW_AT_use_location = 0x4a,
+  DW_AT_variable_parameter = 0x4b,
+  DW_AT_virtuality = 0x4c,
+  DW_AT_vtable_elem_location = 0x4d,
+  // DWARF 3 values.
+  DW_AT_allocated     = 0x4e,
+  DW_AT_associated    = 0x4f,
+  DW_AT_data_location = 0x50,
+  DW_AT_stride        = 0x51,
+  DW_AT_entry_pc      = 0x52,
+  DW_AT_use_UTF8      = 0x53,
+  DW_AT_extension     = 0x54,
+  DW_AT_ranges        = 0x55,
+  DW_AT_trampoline    = 0x56,
+  DW_AT_call_column   = 0x57,
+  DW_AT_call_file     = 0x58,
+  DW_AT_call_line     = 0x59,
+  // SGI/MIPS extensions.
+  DW_AT_MIPS_fde = 0x2001,
+  DW_AT_MIPS_loop_begin = 0x2002,
+  DW_AT_MIPS_tail_loop_begin = 0x2003,
+  DW_AT_MIPS_epilog_begin = 0x2004,
+  DW_AT_MIPS_loop_unroll_factor = 0x2005,
+  DW_AT_MIPS_software_pipeline_depth = 0x2006,
+  DW_AT_MIPS_linkage_name = 0x2007,
+  DW_AT_MIPS_stride = 0x2008,
+  DW_AT_MIPS_abstract_name = 0x2009,
+  DW_AT_MIPS_clone_origin = 0x200a,
+  DW_AT_MIPS_has_inlines = 0x200b,
+  // HP extensions.
+  DW_AT_HP_block_index         = 0x2000,
+  DW_AT_HP_unmodifiable        = 0x2001,  // Same as DW_AT_MIPS_fde.
+  DW_AT_HP_actuals_stmt_list   = 0x2010,
+  DW_AT_HP_proc_per_section    = 0x2011,
+  DW_AT_HP_raw_data_ptr        = 0x2012,
+  DW_AT_HP_pass_by_reference   = 0x2013,
+  DW_AT_HP_opt_level           = 0x2014,
+  DW_AT_HP_prof_version_id     = 0x2015,
+  DW_AT_HP_opt_flags           = 0x2016,
+  DW_AT_HP_cold_region_low_pc  = 0x2017,
+  DW_AT_HP_cold_region_high_pc = 0x2018,
+  DW_AT_HP_all_variables_modifiable = 0x2019,
+  DW_AT_HP_linkage_name        = 0x201a,
+  DW_AT_HP_prof_flags          = 0x201b,  // In comp unit of procs_info for -g.
+  // GNU extensions.
+  DW_AT_sf_names   = 0x2101,
+  DW_AT_src_info   = 0x2102,
+  DW_AT_mac_info   = 0x2103,
+  DW_AT_src_coords = 0x2104,
+  DW_AT_body_begin = 0x2105,
+  DW_AT_body_end   = 0x2106,
+  DW_AT_GNU_vector = 0x2107,
+  // VMS extensions.
+  DW_AT_VMS_rtnbeg_pd_address = 0x2201,
+  // UPC extension.
+  DW_AT_upc_threads_scaled = 0x3210,
+  // PGI (STMicroelectronics) extensions.
+  DW_AT_PGI_lbase    = 0x3a00,
+  DW_AT_PGI_soffset  = 0x3a01,
+  DW_AT_PGI_lstride  = 0x3a02
+};
+
+
+// Line number opcodes.
+enum DwarfLineNumberOps {
+  DW_LNS_extended_op = 0,
+  DW_LNS_copy = 1,
+  DW_LNS_advance_pc = 2,
+  DW_LNS_advance_line = 3,
+  DW_LNS_set_file = 4,
+  DW_LNS_set_column = 5,
+  DW_LNS_negate_stmt = 6,
+  DW_LNS_set_basic_block = 7,
+  DW_LNS_const_add_pc = 8,
+  DW_LNS_fixed_advance_pc = 9,
+  // DWARF 3.
+  DW_LNS_set_prologue_end = 10,
+  DW_LNS_set_epilogue_begin = 11,
+  DW_LNS_set_isa = 12
+};
+
+// Line number extended opcodes.
+enum DwarfLineNumberExtendedOps {
+  DW_LNE_end_sequence = 1,
+  DW_LNE_set_address = 2,
+  DW_LNE_define_file = 3,
+  // HP extensions.
+  DW_LNE_HP_negate_is_UV_update      = 0x11,
+  DW_LNE_HP_push_context             = 0x12,
+  DW_LNE_HP_pop_context              = 0x13,
+  DW_LNE_HP_set_file_line_column     = 0x14,
+  DW_LNE_HP_set_routine_name         = 0x15,
+  DW_LNE_HP_set_sequence             = 0x16,
+  DW_LNE_HP_negate_post_semantics    = 0x17,
+  DW_LNE_HP_negate_function_exit     = 0x18,
+  DW_LNE_HP_negate_front_end_logical = 0x19,
+  DW_LNE_HP_define_proc              = 0x20
+};
+
+// Type encoding names and codes
+enum DwarfEncoding {
+  DW_ATE_address                     =0x1,
+  DW_ATE_boolean                     =0x2,
+  DW_ATE_complex_float               =0x3,
+  DW_ATE_float                       =0x4,
+  DW_ATE_signed                      =0x5,
+  DW_ATE_signed_char                 =0x6,
+  DW_ATE_unsigned                    =0x7,
+  DW_ATE_unsigned_char               =0x8,
+  // DWARF3/DWARF3f
+  DW_ATE_imaginary_float             =0x9,
+  DW_ATE_packed_decimal              =0xa,
+  DW_ATE_numeric_string              =0xb,
+  DW_ATE_edited                      =0xc,
+  DW_ATE_signed_fixed                =0xd,
+  DW_ATE_unsigned_fixed              =0xe,
+  DW_ATE_decimal_float               =0xf,
+  DW_ATE_lo_user                     =0x80,
+  DW_ATE_hi_user                     =0xff
+};
+
+// Location virtual machine opcodes
+enum DwarfOpcode {
+  DW_OP_addr                         =0x03,
+  DW_OP_deref                        =0x06,
+  DW_OP_const1u                      =0x08,
+  DW_OP_const1s                      =0x09,
+  DW_OP_const2u                      =0x0a,
+  DW_OP_const2s                      =0x0b,
+  DW_OP_const4u                      =0x0c,
+  DW_OP_const4s                      =0x0d,
+  DW_OP_const8u                      =0x0e,
+  DW_OP_const8s                      =0x0f,
+  DW_OP_constu                       =0x10,
+  DW_OP_consts                       =0x11,
+  DW_OP_dup                          =0x12,
+  DW_OP_drop                         =0x13,
+  DW_OP_over                         =0x14,
+  DW_OP_pick                         =0x15,
+  DW_OP_swap                         =0x16,
+  DW_OP_rot                          =0x17,
+  DW_OP_xderef                       =0x18,
+  DW_OP_abs                          =0x19,
+  DW_OP_and                          =0x1a,
+  DW_OP_div                          =0x1b,
+  DW_OP_minus                        =0x1c,
+  DW_OP_mod                          =0x1d,
+  DW_OP_mul                          =0x1e,
+  DW_OP_neg                          =0x1f,
+  DW_OP_not                          =0x20,
+  DW_OP_or                           =0x21,
+  DW_OP_plus                         =0x22,
+  DW_OP_plus_uconst                  =0x23,
+  DW_OP_shl                          =0x24,
+  DW_OP_shr                          =0x25,
+  DW_OP_shra                         =0x26,
+  DW_OP_xor                          =0x27,
+  DW_OP_bra                          =0x28,
+  DW_OP_eq                           =0x29,
+  DW_OP_ge                           =0x2a,
+  DW_OP_gt                           =0x2b,
+  DW_OP_le                           =0x2c,
+  DW_OP_lt                           =0x2d,
+  DW_OP_ne                           =0x2e,
+  DW_OP_skip                         =0x2f,
+  DW_OP_lit0                         =0x30,
+  DW_OP_lit1                         =0x31,
+  DW_OP_lit2                         =0x32,
+  DW_OP_lit3                         =0x33,
+  DW_OP_lit4                         =0x34,
+  DW_OP_lit5                         =0x35,
+  DW_OP_lit6                         =0x36,
+  DW_OP_lit7                         =0x37,
+  DW_OP_lit8                         =0x38,
+  DW_OP_lit9                         =0x39,
+  DW_OP_lit10                        =0x3a,
+  DW_OP_lit11                        =0x3b,
+  DW_OP_lit12                        =0x3c,
+  DW_OP_lit13                        =0x3d,
+  DW_OP_lit14                        =0x3e,
+  DW_OP_lit15                        =0x3f,
+  DW_OP_lit16                        =0x40,
+  DW_OP_lit17                        =0x41,
+  DW_OP_lit18                        =0x42,
+  DW_OP_lit19                        =0x43,
+  DW_OP_lit20                        =0x44,
+  DW_OP_lit21                        =0x45,
+  DW_OP_lit22                        =0x46,
+  DW_OP_lit23                        =0x47,
+  DW_OP_lit24                        =0x48,
+  DW_OP_lit25                        =0x49,
+  DW_OP_lit26                        =0x4a,
+  DW_OP_lit27                        =0x4b,
+  DW_OP_lit28                        =0x4c,
+  DW_OP_lit29                        =0x4d,
+  DW_OP_lit30                        =0x4e,
+  DW_OP_lit31                        =0x4f,
+  DW_OP_reg0                         =0x50,
+  DW_OP_reg1                         =0x51,
+  DW_OP_reg2                         =0x52,
+  DW_OP_reg3                         =0x53,
+  DW_OP_reg4                         =0x54,
+  DW_OP_reg5                         =0x55,
+  DW_OP_reg6                         =0x56,
+  DW_OP_reg7                         =0x57,
+  DW_OP_reg8                         =0x58,
+  DW_OP_reg9                         =0x59,
+  DW_OP_reg10                        =0x5a,
+  DW_OP_reg11                        =0x5b,
+  DW_OP_reg12                        =0x5c,
+  DW_OP_reg13                        =0x5d,
+  DW_OP_reg14                        =0x5e,
+  DW_OP_reg15                        =0x5f,
+  DW_OP_reg16                        =0x60,
+  DW_OP_reg17                        =0x61,
+  DW_OP_reg18                        =0x62,
+  DW_OP_reg19                        =0x63,
+  DW_OP_reg20                        =0x64,
+  DW_OP_reg21                        =0x65,
+  DW_OP_reg22                        =0x66,
+  DW_OP_reg23                        =0x67,
+  DW_OP_reg24                        =0x68,
+  DW_OP_reg25                        =0x69,
+  DW_OP_reg26                        =0x6a,
+  DW_OP_reg27                        =0x6b,
+  DW_OP_reg28                        =0x6c,
+  DW_OP_reg29                        =0x6d,
+  DW_OP_reg30                        =0x6e,
+  DW_OP_reg31                        =0x6f,
+  DW_OP_breg0                        =0x70,
+  DW_OP_breg1                        =0x71,
+  DW_OP_breg2                        =0x72,
+  DW_OP_breg3                        =0x73,
+  DW_OP_breg4                        =0x74,
+  DW_OP_breg5                        =0x75,
+  DW_OP_breg6                        =0x76,
+  DW_OP_breg7                        =0x77,
+  DW_OP_breg8                        =0x78,
+  DW_OP_breg9                        =0x79,
+  DW_OP_breg10                       =0x7a,
+  DW_OP_breg11                       =0x7b,
+  DW_OP_breg12                       =0x7c,
+  DW_OP_breg13                       =0x7d,
+  DW_OP_breg14                       =0x7e,
+  DW_OP_breg15                       =0x7f,
+  DW_OP_breg16                       =0x80,
+  DW_OP_breg17                       =0x81,
+  DW_OP_breg18                       =0x82,
+  DW_OP_breg19                       =0x83,
+  DW_OP_breg20                       =0x84,
+  DW_OP_breg21                       =0x85,
+  DW_OP_breg22                       =0x86,
+  DW_OP_breg23                       =0x87,
+  DW_OP_breg24                       =0x88,
+  DW_OP_breg25                       =0x89,
+  DW_OP_breg26                       =0x8a,
+  DW_OP_breg27                       =0x8b,
+  DW_OP_breg28                       =0x8c,
+  DW_OP_breg29                       =0x8d,
+  DW_OP_breg30                       =0x8e,
+  DW_OP_breg31                       =0x8f,
+  DW_OP_regX                         =0x90,
+  DW_OP_fbreg                        =0x91,
+  DW_OP_bregX                        =0x92,
+  DW_OP_piece                        =0x93,
+  DW_OP_deref_size                   =0x94,
+  DW_OP_xderef_size                  =0x95,
+  DW_OP_nop                          =0x96,
+  // DWARF3/DWARF3f
+  DW_OP_push_object_address          =0x97,
+  DW_OP_call2                        =0x98,
+  DW_OP_call4                        =0x99,
+  DW_OP_call_ref                     =0x9a,
+  DW_OP_form_tls_address             =0x9b,
+  DW_OP_call_frame_cfa               =0x9c,
+  DW_OP_bit_piece                    =0x9d,
+  DW_OP_lo_user                      =0xe0,
+  DW_OP_hi_user                      =0xff,  
+  // GNU extensions
+  DW_OP_GNU_push_tls_address         =0xe0
+};
+
+}  // namespace dwarf2reader
+#endif  // COMMON_MAC_DWARF_DWARF2ENUMS_H__
diff --git a/src/common/mac/dwarf/dwarf2reader.cc b/src/common/mac/dwarf/dwarf2reader.cc
new file mode 100644
index 00000000..6e7a2f1d
--- /dev/null
+++ b/src/common/mac/dwarf/dwarf2reader.cc
@@ -0,0 +1,830 @@
+// Copyright 2006 Google Inc. All Rights Reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+#include <ext/hash_map>
+#include <stack>
+#include <utility>
+
+#include "common/mac/dwarf/bytereader-inl.h"
+#include "common/mac/dwarf/dwarf2reader.h"
+#include "common/mac/dwarf/bytereader.h"
+#include "common/mac/dwarf/line_state_machine.h"
+
+namespace __gnu_cxx
+{
+  template<> struct hash< std::string >
+  {
+    size_t operator()( const std::string& x ) const
+    {
+      return hash< const char* >()( x.c_str() );
+    }
+  };
+}
+
+namespace dwarf2reader {
+
+// Read a DWARF2/3 initial length field from START, using READER, and
+// report the length in LEN.  Return the actual initial length.
+
+static uint64 ReadInitialLength(const char* start,
+                                ByteReader* reader, size_t* len) {
+  const uint64 initial_length = reader->ReadFourBytes(start);
+  start += 4;
+
+  // In DWARF2/3, if the initial length is all 1 bits, then the offset
+  // size is 8 and we need to read the next 8 bytes for the real length.
+  if (initial_length == 0xffffffff) {
+    reader->SetOffsetSize(8);
+    *len = 12;
+    return reader->ReadOffset(start);
+  } else {
+    reader->SetOffsetSize(4);
+    *len = 4;
+  }
+  return initial_length;
+}
+
+CompilationUnit::CompilationUnit(const SectionMap& sections, uint64 offset,
+                                 ByteReader* reader, Dwarf2Handler* handler)
+    : offset_from_section_start_(offset), reader_(reader),
+      sections_(sections), handler_(handler), abbrevs_(NULL),
+      string_buffer_(NULL), string_buffer_length_(0) {}
+
+// Read a DWARF2/3 abbreviation section.
+// Each abbrev consists of a abbreviation number, a tag, a byte
+// specifying whether the tag has children, and a list of
+// attribute/form pairs.
+// The list of forms is terminated by a 0 for the attribute, and a
+// zero for the form.  The entire abbreviation section is terminated
+// by a zero for the code.
+
+void CompilationUnit::ReadAbbrevs() {
+  if (abbrevs_)
+    return;
+
+  // First get the debug_abbrev section
+  SectionMap::const_iterator iter = sections_.find("__debug_abbrev");
+  assert(iter != sections_.end());
+
+  abbrevs_ = new vector<Abbrev>;
+  abbrevs_->resize(1);
+
+  // The only way to check whether we are reading over the end of the
+  // buffer would be to first compute the size of the leb128 data by
+  // reading it, then go back and read it again.
+  const char* abbrev_start = iter->second.first +
+                                      header_.abbrev_offset;
+  const char* abbrevptr = abbrev_start;
+  const uint64 abbrev_length = iter->second.second - header_.abbrev_offset;
+
+  while (1) {
+    CompilationUnit::Abbrev abbrev;
+    size_t len;
+    const uint32 number = reader_->ReadUnsignedLEB128(abbrevptr, &len);
+
+    if (number == 0)
+      break;
+    abbrev.number = number;
+    abbrevptr += len;
+
+    assert(abbrevptr < abbrev_start + abbrev_length);
+    const uint32 tag = reader_->ReadUnsignedLEB128(abbrevptr, &len);
+    abbrevptr += len;
+    abbrev.tag = static_cast<enum DwarfTag>(tag);
+
+    assert(abbrevptr < abbrev_start + abbrev_length);
+    abbrev.has_children = reader_->ReadOneByte(abbrevptr);
+    abbrevptr += 1;
+
+    assert(abbrevptr < abbrev_start + abbrev_length);
+
+    while (1) {
+      const uint32 nametemp = reader_->ReadUnsignedLEB128(abbrevptr, &len);
+      abbrevptr += len;
+
+      assert(abbrevptr < abbrev_start + abbrev_length);
+      const uint32 formtemp = reader_->ReadUnsignedLEB128(abbrevptr, &len);
+      abbrevptr += len;
+      if (nametemp == 0 && formtemp == 0)
+        break;
+
+      const enum DwarfAttribute name =
+        static_cast<enum DwarfAttribute>(nametemp);
+      const enum DwarfForm form = static_cast<enum DwarfForm>(formtemp);
+      abbrev.attributes.push_back(make_pair(name, form));
+    }
+    assert(abbrev.number == abbrevs_->size());
+    abbrevs_->push_back(abbrev);
+  }
+}
+
+// Skips a single DIE's attributes.
+const char* CompilationUnit::SkipDIE(const char* start,
+                                              const Abbrev& abbrev) {
+  for (AttributeList::const_iterator i = abbrev.attributes.begin();
+       i != abbrev.attributes.end();
+       i++)  {
+    start = SkipAttribute(start, i->second);
+  }
+  return start;
+}
+
+// Skips a single attribute form's data.
+const char* CompilationUnit::SkipAttribute(const char* start,
+                                                    enum DwarfForm form) {
+  size_t len;
+
+  switch (form) {
+    case DW_FORM_indirect:
+      form = static_cast<enum DwarfForm>(reader_->ReadUnsignedLEB128(start,
+                                                                     &len));
+      start += len;
+      return SkipAttribute(start, form);
+      break;
+
+    case DW_FORM_data1:
+    case DW_FORM_flag:
+    case DW_FORM_ref1:
+      return start + 1;
+      break;
+    case DW_FORM_ref2:
+    case DW_FORM_data2:
+      return start + 2;
+      break;
+    case DW_FORM_ref4:
+    case DW_FORM_data4:
+      return start + 4;
+      break;
+    case DW_FORM_ref8:
+    case DW_FORM_data8:
+      return start + 8;
+      break;
+    case DW_FORM_string:
+      return start + strlen(start) + 1;
+      break;
+    case DW_FORM_udata:
+    case DW_FORM_ref_udata:
+      reader_->ReadUnsignedLEB128(start, &len);
+      return start + len;
+      break;
+
+    case DW_FORM_sdata:
+      reader_->ReadSignedLEB128(start, &len);
+      return start + len;
+      break;
+    case DW_FORM_addr:
+      return start + reader_->AddressSize();
+      break;
+    case DW_FORM_ref_addr:
+      // DWARF2 and 3 differ on whether ref_addr is address size or
+      // offset size.
+      assert(header_.version == 2 || header_.version == 3);
+      if (header_.version == 2) {
+        return start + reader_->AddressSize();
+      } else if (header_.version == 3) {
+        return start + reader_->OffsetSize();
+      }
+      break;
+
+    case DW_FORM_block1:
+      return start + 1 + reader_->ReadOneByte(start);
+      break;
+    case DW_FORM_block2:
+      return start + 2 + reader_->ReadTwoBytes(start);
+      break;
+    case DW_FORM_block4:
+      return start + 4 + reader_->ReadFourBytes(start);
+      break;
+    case DW_FORM_block: {
+      uint64 size = reader_->ReadUnsignedLEB128(start, &len);
+      return start + size + len;
+    }
+      break;
+    case DW_FORM_strp:
+        return start + reader_->OffsetSize();
+      break;
+    default:
+      fprintf(stderr,"Unhandled form type");
+  }
+  fprintf(stderr,"Unhandled form type");
+  return NULL;
+}
+
+// Read a DWARF2/3 header.
+// The header is variable length in DWARF3 (and DWARF2 as extended by
+// most compilers), and consists of an length field, a version number,
+// the offset in the .debug_abbrev section for our abbrevs, and an
+// address size.
+void CompilationUnit::ReadHeader() {
+  const char* headerptr = buffer_;
+  size_t initial_length_size;
+
+  assert(headerptr + 4 < buffer_ + buffer_length_);
+  const uint64 initial_length = ReadInitialLength(headerptr, reader_,
+                                                  &initial_length_size);
+  headerptr += initial_length_size;
+  header_.length = initial_length;
+
+  assert(headerptr + 2 < buffer_ + buffer_length_);
+  header_.version = reader_->ReadTwoBytes(headerptr);
+  headerptr += 2;
+
+  assert(headerptr + reader_->OffsetSize() < buffer_ + buffer_length_);
+  header_.abbrev_offset = reader_->ReadOffset(headerptr);
+  headerptr += reader_->OffsetSize();
+
+  assert(headerptr + 1 < buffer_ + buffer_length_);
+  header_.address_size = reader_->ReadOneByte(headerptr);
+  reader_->SetAddressSize(header_.address_size);
+  headerptr += 1;
+
+  after_header_ = headerptr;
+
+  // This check ensures that we don't have to do checking during the
+  // reading of DIEs. header_.length does not include the size of the
+  // initial length.
+  assert(buffer_ + initial_length_size + header_.length <=
+        buffer_ + buffer_length_);
+}
+
+uint64 CompilationUnit::Start() {
+  // First get the debug_info section
+  SectionMap::const_iterator iter = sections_.find("__debug_info");
+  assert(iter != sections_.end());
+
+  // Set up our buffer
+  buffer_ = iter->second.first + offset_from_section_start_;
+  buffer_length_ = iter->second.second - offset_from_section_start_;
+
+  // Read the header
+  ReadHeader();
+
+  // Figure out the real length from the end of the initial length to
+  // the end of the compilation unit, since that is the value we
+  // return.
+  uint64 ourlength = header_.length;
+  if (reader_->OffsetSize() == 8)
+    ourlength += 12;
+  else
+    ourlength += 4;
+
+  // See if the user wants this compilation unit, and if not, just return.
+  if (!handler_->StartCompilationUnit(offset_from_section_start_,
+                                      reader_->AddressSize(),
+                                      reader_->OffsetSize(),
+                                      header_.length,
+                                      header_.version))
+    return ourlength;
+
+  // Otherwise, continue by reading our abbreviation entries.
+  ReadAbbrevs();
+
+  // Set the string section if we have one.
+  iter = sections_.find("__debug_str");
+  if (iter != sections_.end()) {
+    string_buffer_ = iter->second.first;
+    string_buffer_length_ = iter->second.second;
+  }
+
+  // Now that we have our abbreviations, start processing DIE's.
+  ProcessDIEs();
+
+  return ourlength;
+}
+
+// If one really wanted, you could merge SkipAttribute and
+// ProcessAttribute
+// This is all boring data manipulation and calling of the handler.
+const char* CompilationUnit::ProcessAttribute(
+    uint64 dieoffset, const char* start, enum DwarfAttribute attr,
+    enum DwarfForm form) {
+  size_t len;
+
+  switch (form) {
+    // DW_FORM_indirect is never used because it is such a space
+    // waster.
+    case DW_FORM_indirect:
+      form = static_cast<enum DwarfForm>(reader_->ReadUnsignedLEB128(start,
+                                                                     &len));
+      start += len;
+      return ProcessAttribute(dieoffset, start, attr, form);
+      break;
+
+    case DW_FORM_data1:
+    case DW_FORM_flag:
+    case DW_FORM_ref1:
+      handler_->ProcessAttributeUnsigned(dieoffset, attr, form,
+                                         reader_->ReadOneByte(start));
+      return start + 1;
+      break;
+    case DW_FORM_ref2:
+    case DW_FORM_data2:
+      handler_->ProcessAttributeUnsigned(dieoffset, attr, form,
+                                         reader_->ReadTwoBytes(start));
+      return start + 2;
+      break;
+    case DW_FORM_ref4:
+    case DW_FORM_data4:
+      handler_->ProcessAttributeUnsigned(dieoffset, attr, form,
+                                         reader_->ReadFourBytes(start));
+      return start + 4;
+      break;
+    case DW_FORM_ref8:
+    case DW_FORM_data8:
+      handler_->ProcessAttributeUnsigned(dieoffset, attr, form,
+                                         reader_->ReadEightBytes(start));
+      return start + 8;
+      break;
+    case DW_FORM_string: {
+      const char* str = start;
+      handler_->ProcessAttributeString(dieoffset, attr, form,
+                                       str);
+      return start + strlen(str) + 1;
+    }
+      break;
+    case DW_FORM_udata:
+    case DW_FORM_ref_udata:
+      handler_->ProcessAttributeUnsigned(dieoffset, attr, form,
+                                         reader_->ReadUnsignedLEB128(start,
+                                                                     &len));
+      return start + len;
+      break;
+
+    case DW_FORM_sdata:
+      handler_->ProcessAttributeSigned(dieoffset, attr, form,
+                                      reader_->ReadSignedLEB128(start, &len));
+      return start + len;
+      break;
+    case DW_FORM_addr:
+      handler_->ProcessAttributeUnsigned(dieoffset, attr, form,
+                                         reader_->ReadAddress(start));
+      return start + reader_->AddressSize();
+      break;
+    case DW_FORM_ref_addr:
+      // DWARF2 and 3 differ on whether ref_addr is address size or
+      // offset size.
+      assert(header_.version == 2 || header_.version == 3);
+      if (header_.version == 2) {
+        handler_->ProcessAttributeUnsigned(dieoffset, attr, form,
+                                           reader_->ReadAddress(start));
+        return start + reader_->AddressSize();
+      } else if (header_.version == 3) {
+        handler_->ProcessAttributeUnsigned(dieoffset, attr, form,
+                                           reader_->ReadOffset(start));
+        return start + reader_->OffsetSize();
+      }
+      break;
+
+    case DW_FORM_block1: {
+      uint64 datalen = reader_->ReadOneByte(start);
+      handler_->ProcessAttributeBuffer(dieoffset, attr, form, start + 1,
+                                      datalen);
+      return start + 1 + datalen;
+    }
+      break;
+    case DW_FORM_block2: {
+      uint64 datalen = reader_->ReadTwoBytes(start);
+      handler_->ProcessAttributeBuffer(dieoffset, attr, form, start + 2,
+                                      datalen);
+      return start + 2 + datalen;
+    }
+      break;
+    case DW_FORM_block4: {
+      uint64 datalen = reader_->ReadFourBytes(start);
+      handler_->ProcessAttributeBuffer(dieoffset, attr, form, start + 4,
+                                      datalen);
+      return start + 4 + datalen;
+    }
+      break;
+    case DW_FORM_block: {
+      uint64 datalen = reader_->ReadUnsignedLEB128(start, &len);
+      handler_->ProcessAttributeBuffer(dieoffset, attr, form, start + len,
+                                      datalen);
+      return start + datalen + len;
+    }
+      break;
+    case DW_FORM_strp: {
+      assert(string_buffer_ != NULL);
+
+      const uint64 offset = reader_->ReadOffset(start);
+      assert(string_buffer_ + offset < string_buffer_ + string_buffer_length_);
+
+      const char* str = string_buffer_ + offset;
+      handler_->ProcessAttributeString(dieoffset, attr, form,
+                                       str);
+      return start + reader_->OffsetSize();
+    }
+      break;
+    default:
+      fprintf(stderr, "Unhandled form type");
+  }
+  fprintf(stderr, "Unhandled form type");
+  return NULL;
+}
+
+const char* CompilationUnit::ProcessDIE(uint64 dieoffset,
+                                                 const char* start,
+                                                 const Abbrev& abbrev) {
+  for (AttributeList::const_iterator i = abbrev.attributes.begin();
+       i != abbrev.attributes.end();
+       i++)  {
+    start = ProcessAttribute(dieoffset, start, i->first, i->second);
+  }
+  return start;
+}
+
+void CompilationUnit::ProcessDIEs() {
+  const char* dieptr = after_header_;
+  size_t len;
+
+  // lengthstart is the place the length field is based on.
+  // It is the point in the header after the initial length field
+  const char* lengthstart = buffer_;
+
+  // In 64 bit dwarf, the initial length is 12 bytes, because of the
+  // 0xffffffff at the start.
+  if (reader_->OffsetSize() == 8)
+    lengthstart += 12;
+  else
+    lengthstart += 4;
+
+  // we need semantics of boost scoped_ptr here - no intention of trasnferring
+  // ownership of the stack.  use const, but then we limit ourselves to not
+  // ever being able to call .reset() on the smart pointer.
+  auto_ptr<stack<uint64> > const die_stack(new stack<uint64>);
+
+  while (dieptr < (lengthstart + header_.length)) {
+    // We give the user the absolute offset from the beginning of
+    // debug_info, since they need it to deal with ref_addr forms.
+    uint64 absolute_offset = (dieptr - buffer_) + offset_from_section_start_;
+
+    uint64 abbrev_num = reader_->ReadUnsignedLEB128(dieptr, &len);
+
+    dieptr += len;
+
+    // Abbrev == 0 represents the end of a list of children.
+    if (abbrev_num == 0) {
+      const uint64 offset = die_stack->top();
+      die_stack->pop();
+      handler_->EndDIE(offset);
+      continue;
+    }
+
+    const Abbrev& abbrev = abbrevs_->at(abbrev_num);
+    const enum DwarfTag tag = abbrev.tag;
+    if (!handler_->StartDIE(absolute_offset, tag, abbrev.attributes)) {
+      dieptr = SkipDIE(dieptr, abbrev);
+    } else {
+      dieptr = ProcessDIE(absolute_offset, dieptr, abbrev);
+    }
+
+    if (abbrev.has_children) {
+      die_stack->push(absolute_offset);
+    } else {
+      handler_->EndDIE(absolute_offset);
+    }
+  }
+}
+
+LineInfo::LineInfo(const char* buffer, uint64 buffer_length,
+                   ByteReader* reader, LineInfoHandler* handler):
+    handler_(handler), reader_(reader), buffer_(buffer),
+    buffer_length_(buffer_length) {
+  header_.std_opcode_lengths = NULL;
+}
+
+uint64 LineInfo::Start() {
+  ReadHeader();
+  ReadLines();
+  return after_header_ - buffer_;
+}
+
+// The header for a debug_line section is mildly complicated, because
+// the line info is very tightly encoded.
+void LineInfo::ReadHeader() {
+  const char* lineptr = buffer_;
+  size_t initial_length_size;
+
+  const uint64 initial_length = ReadInitialLength(lineptr, reader_,
+                                                  &initial_length_size);
+
+  lineptr += initial_length_size;
+  header_.total_length = initial_length;
+  assert(buffer_ + initial_length_size + header_.total_length <=
+        buffer_ + buffer_length_);
+
+  // Address size *must* be set by CU ahead of time.
+  assert(reader_->AddressSize() != 0);
+
+  header_.version = reader_->ReadTwoBytes(lineptr);
+  lineptr += 2;
+
+  header_.prologue_length = reader_->ReadOffset(lineptr);
+  lineptr += reader_->OffsetSize();
+
+  header_.min_insn_length = reader_->ReadOneByte(lineptr);
+  lineptr += 1;
+
+  header_.default_is_stmt = reader_->ReadOneByte(lineptr);
+  lineptr += 1;
+
+  header_.line_base = *reinterpret_cast<const int8*>(lineptr);
+  lineptr += 1;
+
+  header_.line_range = reader_->ReadOneByte(lineptr);
+  lineptr += 1;
+
+  header_.opcode_base = reader_->ReadOneByte(lineptr);
+  lineptr += 1;
+
+  header_.std_opcode_lengths = new vector<unsigned char>;
+  header_.std_opcode_lengths->resize(header_.opcode_base + 1);
+  (*header_.std_opcode_lengths)[0] = 0;
+  for (int i = 1; i < header_.opcode_base; i++) {
+    (*header_.std_opcode_lengths)[i] = reader_->ReadOneByte(lineptr);
+    lineptr += 1;
+  }
+
+  // It is legal for the directory entry table to be empty.
+  if (*lineptr) {
+    uint32 dirindex = 1;
+    while (*lineptr) {
+      const char* dirname = lineptr;
+      handler_->DefineDir(dirname, dirindex);
+      lineptr += strlen(dirname) + 1;
+      dirindex++;
+    }
+  }
+  lineptr++;
+
+  // It is also legal for the file entry table to be empty.
+  if (*lineptr) {
+    uint32 fileindex = 1;
+    size_t len;
+    while (*lineptr) {
+      const char* filename = lineptr;
+      lineptr += strlen(filename) + 1;
+
+      uint64 dirindex = reader_->ReadUnsignedLEB128(lineptr, &len);
+      lineptr += len;
+
+      uint64 mod_time = reader_->ReadUnsignedLEB128(lineptr, &len);
+      lineptr += len;
+
+      uint64 filelength = reader_->ReadUnsignedLEB128(lineptr, &len);
+      lineptr += len;
+      handler_->DefineFile(filename, fileindex, dirindex, mod_time,
+                           filelength);
+      fileindex++;
+    }
+  }
+  lineptr++;
+
+  after_header_ = lineptr;
+}
+
+/* static */
+bool LineInfo::ProcessOneOpcode(ByteReader* reader,
+                                LineInfoHandler* handler,
+                                const struct LineInfoHeader &header,
+                                const char* start,
+                                struct LineStateMachine* lsm,
+                                size_t* len,
+                                uintptr_t pc,
+                                bool *lsm_passes_pc) {
+  size_t oplen = 0;
+  size_t templen;
+  uint8 opcode = reader->ReadOneByte(start);
+  oplen++;
+  start++;
+
+  // If the opcode is great than the opcode_base, it is a special
+  // opcode. Most line programs consist mainly of special opcodes.
+  if (opcode >= header.opcode_base) {
+    opcode -= header.opcode_base;
+    const int64 advance_address = (opcode / header.line_range)
+                                  * header.min_insn_length;
+    const int64 advance_line = (opcode % header.line_range)
+                               + header.line_base;
+
+    // Check if the lsm passes "pc". If so, mark it as passed.
+    if (lsm_passes_pc &&
+        lsm->address <= pc && pc < lsm->address + advance_address) {
+      *lsm_passes_pc = true;
+    }
+
+    lsm->address += advance_address;
+    lsm->line_num += advance_line;
+    lsm->basic_block = true;
+    *len = oplen;
+    return true;
+  }
+
+  // Otherwise, we have the regular opcodes
+  switch (opcode) {
+    case DW_LNS_copy: {
+      lsm->basic_block = false;
+      *len = oplen;
+      return true;
+    }
+
+    case DW_LNS_advance_pc: {
+      uint64 advance_address = reader->ReadUnsignedLEB128(start, &templen);
+      oplen += templen;
+
+      // Check if the lsm passes "pc". If so, mark it as passed.
+      if (lsm_passes_pc && lsm->address <= pc &&
+          pc < lsm->address + header.min_insn_length * advance_address) {
+        *lsm_passes_pc = true;
+      }
+
+      lsm->address += header.min_insn_length * advance_address;
+    }
+      break;
+    case DW_LNS_advance_line: {
+      const int64 advance_line = reader->ReadSignedLEB128(start, &templen);
+      oplen += templen;
+      lsm->line_num += advance_line;
+
+      // With gcc 4.2.1, we can get the line_no here for the first time
+      // since DW_LNS_advance_line is called after DW_LNE_set_address is
+      // called. So we check if the lsm passes "pc" here, not in
+      // DW_LNE_set_address.
+      if (lsm_passes_pc && lsm->address == pc) {
+        *lsm_passes_pc = true;
+      }
+    }
+      break;
+    case DW_LNS_set_file: {
+      const uint64 fileno = reader->ReadUnsignedLEB128(start, &templen);
+      oplen += templen;
+      lsm->file_num = fileno;
+    }
+      break;
+    case DW_LNS_set_column: {
+      const uint64 colno = reader->ReadUnsignedLEB128(start, &templen);
+      oplen += templen;
+      lsm->column_num = colno;
+    }
+      break;
+    case DW_LNS_negate_stmt: {
+      lsm->is_stmt = !lsm->is_stmt;
+    }
+      break;
+    case DW_LNS_set_basic_block: {
+      lsm->basic_block = true;
+    }
+      break;
+    case DW_LNS_fixed_advance_pc: {
+      const uint16 advance_address = reader->ReadTwoBytes(start);
+      oplen += 2;
+
+      // Check if the lsm passes "pc". If so, mark it as passed.
+      if (lsm_passes_pc &&
+          lsm->address <= pc && pc < lsm->address + advance_address) {
+        *lsm_passes_pc = true;
+      }
+
+      lsm->address += advance_address;
+    }
+      break;
+    case DW_LNS_const_add_pc: {
+      const int64 advance_address = header.min_insn_length
+                                    * ((255 - header.opcode_base)
+                                       / header.line_range);
+
+      // Check if the lsm passes "pc". If so, mark it as passed.
+      if (lsm_passes_pc &&
+          lsm->address <= pc && pc < lsm->address + advance_address) {
+        *lsm_passes_pc = true;
+      }
+
+      lsm->address += advance_address;
+    }
+      break;
+    case DW_LNS_extended_op: {
+      const size_t extended_op_len = reader->ReadUnsignedLEB128(start,
+                                                                &templen);
+      start += templen;
+      oplen += templen + extended_op_len;
+
+      const uint64 extended_op = reader->ReadOneByte(start);
+      start++;
+
+      switch (extended_op) {
+        case DW_LNE_end_sequence: {
+          lsm->end_sequence = true;
+          *len = oplen;
+          return true;
+        }
+          break;
+        case DW_LNE_set_address: {
+          // With gcc 4.2.1, we cannot tell the line_no here since
+          // DW_LNE_set_address is called before DW_LNS_advance_line is
+          // called.  So we do not check if the lsm passes "pc" here.  See
+          // also the comment in DW_LNS_advance_line.
+          uint64 address = reader->ReadAddress(start);
+          lsm->address = address;
+        }
+          break;
+        case DW_LNE_define_file: {
+          const char* filename  = start;
+
+          templen = strlen(filename) + 1;
+          start += templen;
+
+          uint64 dirindex = reader->ReadUnsignedLEB128(start, &templen);
+          oplen += templen;
+
+          const uint64 mod_time = reader->ReadUnsignedLEB128(start,
+                                                             &templen);
+          oplen += templen;
+
+          const uint64 filelength = reader->ReadUnsignedLEB128(start,
+                                                               &templen);
+          oplen += templen;
+
+          if (handler) {
+            handler->DefineFile(filename, -1, dirindex, mod_time,
+                                filelength);
+          }
+        }
+          break;
+      }
+    }
+      break;
+
+    default: {
+      // Ignore unknown opcode  silently
+      if (header.std_opcode_lengths) {
+        for (int i = 0; i < (*header.std_opcode_lengths)[opcode]; i++) {
+          size_t templen;
+          reader->ReadUnsignedLEB128(start, &templen);
+          start += templen;
+          oplen += templen;
+        }
+      }
+    }
+      break;
+  }
+  *len = oplen;
+  return false;
+}
+
+void LineInfo::ReadLines() {
+  struct LineStateMachine lsm;
+
+  // lengthstart is the place the length field is based on.
+  // It is the point in the header after the initial length field
+  const char* lengthstart = buffer_;
+
+  // In 64 bit dwarf, the initial length is 12 bytes, because of the
+  // 0xffffffff at the start.
+  if (reader_->OffsetSize() == 8)
+    lengthstart += 12;
+  else
+    lengthstart += 4;
+
+  const char* lineptr = after_header_;
+  while (lineptr < lengthstart + header_.total_length) {
+    lsm.Reset(header_.default_is_stmt);
+    while (!lsm.end_sequence) {
+      size_t oplength;
+      bool add_line = ProcessOneOpcode(reader_, handler_, header_,
+                                       lineptr, &lsm, &oplength, (uintptr_t)-1, NULL);
+      if (add_line)
+        handler_->AddLine(lsm.address, lsm.file_num, lsm.line_num,
+                          lsm.column_num);
+      lineptr += oplength;
+    }
+  }
+
+  after_header_ = lengthstart + header_.total_length;
+}
+
+}  // namespace dwarf2reader
diff --git a/src/common/mac/dwarf/dwarf2reader.h b/src/common/mac/dwarf/dwarf2reader.h
new file mode 100644
index 00000000..f27cdac7
--- /dev/null
+++ b/src/common/mac/dwarf/dwarf2reader.h
@@ -0,0 +1,393 @@
+// Copyright 2006 Google Inc. All Rights Reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+// This file contains definitions related to the DWARF2/3 reader and
+// it's handler interfaces.
+// The DWARF2/3 specification can be found at
+// http://dwarf.freestandards.org and should be considered required
+// reading if you wish to modify the implementation.
+// Only a cursory attempt is made to explain terminology that is
+// used here, as it is much better explained in the standard documents
+#ifndef COMMON_MAC_DWARF_DWARF2READER_H__
+#define COMMON_MAC_DWARF_DWARF2READER_H__
+
+#include <ext/hash_map>
+#include <list>
+#include <string>
+#include <utility>
+#include <vector>
+
+#include "common/mac/dwarf/dwarf2enums.h"
+#include "common/mac/dwarf/types.h"
+
+using namespace std;
+using namespace __gnu_cxx;
+
+namespace dwarf2reader {
+struct LineStateMachine;
+class ByteReader;
+class Dwarf2Handler;
+class LineInfoHandler;
+
+// This maps from a string naming a section to a pair containing a
+// the data for the section, and the size of the section.
+typedef hash_map<string, pair<const char*, uint64> > SectionMap;
+typedef list<pair<enum DwarfAttribute, enum DwarfForm> > AttributeList;
+typedef AttributeList::iterator AttributeIterator;
+typedef AttributeList::const_iterator ConstAttributeIterator;
+
+struct LineInfoHeader {
+  uint64 total_length;
+  uint16 version;
+  uint64 prologue_length;
+  uint8 min_insn_length; // insn stands for instructin
+  bool default_is_stmt; // stmt stands for statement
+  int8 line_base;
+  uint8 line_range;
+  uint8 opcode_base;
+  // Use a pointer so that signalsafe_addr2line is able to use this structure
+  // without heap allocation problem.
+  vector<unsigned char> *std_opcode_lengths;
+};
+
+class LineInfo {
+ public:
+
+  // Initializes a .debug_line reader. Buffer and buffer length point
+  // to the beginning and length of the line information to read.
+  // Reader is a ByteReader class that has the endianness set
+  // properly.
+  LineInfo(const char* buffer_, uint64 buffer_length,
+           ByteReader* reader, LineInfoHandler* handler);
+
+  virtual ~LineInfo() {
+    if (header_.std_opcode_lengths) {
+      delete header_.std_opcode_lengths;
+    }
+  }
+
+  // Start processing line info, and calling callbacks in the handler.
+  // Consumes the line number information for a single compilation unit.
+  // Returns the number of bytes processed.
+  uint64 Start();
+
+  // Process a single line info opcode at START using the state
+  // machine at LSM.  Return true if we should define a line using the
+  // current state of the line state machine.  Place the length of the
+  // opcode in LEN.
+  // If LSM_PASSES_PC is non-NULL, this function also checks if the lsm
+  // passes the address of PC. In other words, LSM_PASSES_PC will be
+  // set to true, if the following condition is met.
+  //
+  // lsm's old address < PC <= lsm's new address
+  static bool ProcessOneOpcode(ByteReader* reader,
+                               LineInfoHandler* handler,
+                               const struct LineInfoHeader &header,
+                               const char* start,
+                               struct LineStateMachine* lsm,
+                               size_t* len,
+                               uintptr_t pc,
+                               bool *lsm_passes_pc);
+
+ private:
+  // Reads the DWARF2/3 header for this line info.
+  void ReadHeader();
+
+  // Reads the DWARF2/3 line information
+  void ReadLines();
+
+  // The associated handler to call processing functions in
+  LineInfoHandler* handler_;
+
+  // The associated ByteReader that handles endianness issues for us
+  ByteReader* reader_;
+
+  // A DWARF2/3 line info header.  This is not the same size as
+  // in the actual file, as the one in the file may have a 32 bit or
+  // 64 bit lengths
+
+  struct LineInfoHeader header_;
+
+  // buffer is the buffer for our line info, starting at exactly where
+  // the line info to read is.  after_header is the place right after
+  // the end of the line information header.
+  const char* buffer_;
+  uint64 buffer_length_;
+  const char* after_header_;
+};
+
+// This class is the main interface between the line info reader and
+// the client.  The virtual functions inside this get called for
+// interesting events that happen during line info reading.  The
+// default implementation does nothing
+
+class LineInfoHandler {
+ public:
+  LineInfoHandler() { }
+
+  virtual ~LineInfoHandler() { }
+
+  // Called when we define a directory.  NAME is the directory name,
+  // DIR_NUM is the directory number
+  virtual void DefineDir(const string& name, uint32 dir_num) { }
+
+  // Called when we define a filename. NAME is the filename, FILE_NUM
+  // is the file number which is -1 if the file index is the next
+  // index after the last numbered index (this happens when files are
+  // dynamically defined by the line program), DIR_NUM is the
+  // directory index for the directory name of this file, MOD_TIME is
+  // the modification time of the file, and LENGTH is the length of
+  // the file
+  virtual void DefineFile(const string& name, int32 file_num,
+                          uint32 dir_num, uint64 mod_time,
+                          uint64 length) { }
+
+  // Called when the line info reader has a new line, address pair
+  // ready for us.  ADDRESS is the address of the code, FILE_NUM is
+  // the file number containing the code, LINE_NUM is the line number in
+  // that file for the code, and COLUMN_NUM is the column number the code
+  // starts at, if we know it (0 otherwise).
+  virtual void AddLine(uint64 address, uint32 file_num, uint32 line_num,
+                       uint32 column_num) { }
+};
+
+// The base of DWARF2/3 debug info is a DIE (Debugging Information
+// Entry.
+// DWARF groups DIE's into a tree and calls the root of this tree a
+// "compilation unit".  Most of the time, their is one compilation
+// unit in the .debug_info section for each file that had debug info
+// generated.
+// Each DIE consists of
+
+// 1. a tag specifying a thing that is being described (ie
+// DW_TAG_subprogram for functions, DW_TAG_variable for variables, etc
+// 2. attributes (such as DW_AT_location for location in memory,
+// DW_AT_name for name), and data for each attribute.
+// 3. A flag saying whether the DIE has children or not
+
+// In order to gain some amount of compression, the format of
+// each DIE (tag name, attributes and data forms for the attributes)
+// are stored in a separate table called the "abbreviation table".
+// This is done because a large number of DIEs have the exact same tag
+// and list of attributes, but different data for those attributes.
+// As a result, the .debug_info section is just a stream of data, and
+// requires reading of the .debug_abbrev section to say what the data
+// means.
+
+// As a warning to the user, it should be noted that the reason for
+// using absolute offsets from the beginning of .debug_info is that
+// DWARF2/3 support referencing DIE's from other DIE's by their offset
+// from either the current compilation unit start, *or* the beginning
+// of the .debug_info section.  This means it is possible to reference
+// a DIE in one compilation unit from a DIE in another compilation
+// unit.  This style of reference is usually used to eliminate
+// duplicated information that occurs across compilation
+// units, such as base types, etc.  GCC 3.4+ support this with
+// -feliminate-dwarf2-dups.  Other toolchains will sometimes do
+// duplicate elimination in the linker.
+
+class CompilationUnit {
+ public:
+
+  // Initialize a compilation unit.  This requires a map of sections,
+  // the offset of this compilation unit in the debug_info section, a
+  // ByteReader, and a Dwarf2Handler class to call callbacks in.
+  CompilationUnit(const SectionMap& sections, uint64 offset,
+                  ByteReader* reader, Dwarf2Handler* handler);
+  virtual ~CompilationUnit() {
+    if (abbrevs_) delete abbrevs_;
+  }
+
+  // Begin reading a Dwarf2 compilation unit, and calling the
+  // callbacks in the Dwarf2Handler
+  // Return the offset of the end of the compilation unit - the passed
+  // in offset.
+  uint64 Start();
+
+ private:
+
+  // This struct represents a single DWARF2/3 abbreviation
+  // The abbreviation tells how to read a DWARF2/3 DIE, and consist of a
+  // tag and a list of attributes, as well as the data form of each attribute.
+  struct Abbrev {
+    uint32 number;
+    enum DwarfTag tag;
+    bool has_children;
+    AttributeList attributes;
+  };
+
+  // A DWARF2/3 compilation unit header.  This is not the same size as
+  // in the actual file, as the one in the file may have a 32 bit or
+  // 64 bit length.
+  struct CompilationUnitHeader {
+    uint64 length;
+    uint16 version;
+    uint64 abbrev_offset;
+    uint8 address_size;
+  } header_;
+
+  // Reads the DWARF2/3 header for this compilation unit.
+  void ReadHeader();
+
+  // Reads the DWARF2/3 abbreviations for this compilation unit
+  void ReadAbbrevs();
+
+  // Processes a single DIE for this compilation unit and return a new
+  // pointer just past the end of it
+  const char* ProcessDIE(uint64 dieoffset,
+                                  const char* start,
+                                  const Abbrev& abbrev);
+
+  // Processes a single attribute and return a new pointer just past the
+  // end of it
+  const char* ProcessAttribute(uint64 dieoffset,
+                                        const char* start,
+                                        enum DwarfAttribute attr,
+                                        enum DwarfForm form);
+
+  // Processes all DIEs for this compilation unit
+  void ProcessDIEs();
+
+  // Skips the die with attributes specified in ABBREV starting at
+  // START, and return the new place to position the stream to.
+  const char* SkipDIE(const char* start,
+                               const Abbrev& abbrev);
+
+  // Skips the attribute starting at START, with FORM, and return the
+  // new place to position the stream to.
+  const char* SkipAttribute(const char* start,
+                                     enum DwarfForm form);
+
+  // Offset from section start is the offset of this compilation unit
+  // from the beginning of the .debug_info section.
+  uint64 offset_from_section_start_;
+
+  // buffer is the buffer for our CU, starting at .debug_info + offset
+  // passed in from constructor.
+  // after_header points to right after the compilation unit header.
+  const char* buffer_;
+  uint64 buffer_length_;
+  const char* after_header_;
+
+  // The associated ByteReader that handles endianness issues for us
+  ByteReader* reader_;
+
+  // The map of sections in our file to buffers containing their data
+  const SectionMap& sections_;
+
+  // The associated handler to call processing functions in
+  Dwarf2Handler* handler_;
+
+  // Set of DWARF2/3 abbreviations for this compilation unit.  Indexed
+  // by abbreviation number, which means that abbrevs_[0] is not
+  // valid.
+  vector<Abbrev>* abbrevs_;
+
+  // String section buffer and length, if we have a string section.
+  // This is here to avoid doing a section lookup for strings in
+  // ProcessAttribute, which is in the hot path for DWARF2 reading.
+  const char* string_buffer_;
+  uint64 string_buffer_length_;
+};
+
+// This class is the main interface between the reader and the
+// client.  The virtual functions inside this get called for
+// interesting events that happen during DWARF2 reading.
+// The default implementation skips everything.
+
+class Dwarf2Handler {
+ public:
+  Dwarf2Handler() { }
+
+  virtual ~Dwarf2Handler() { }
+
+  // Start to process a compilation unit at OFFSET from the beginning of the
+  // debug_info section.  Return false if you would like
+  // to skip this compilation unit.
+  virtual bool StartCompilationUnit(uint64 offset, uint8 address_size,
+                                    uint8 offset_size, uint64 cu_length,
+                                    uint8 dwarf_version) { return false; }
+
+  // Start to process a DIE at OFFSET from the beginning of the
+  // debug_info section.  Return false if you would like to skip this
+  // DIE.
+  virtual bool StartDIE(uint64 offset, enum DwarfTag tag,
+                        const AttributeList& attrs) { return false; }
+
+  // Called when we have an attribute with unsigned data to give to
+  // our handler.  The attribute is for the DIE at OFFSET from the
+  // beginning of compilation unit, has a name of ATTR, a form of
+  // FORM, and the actual data of the attribute is in DATA.
+  virtual void ProcessAttributeUnsigned(uint64 offset,
+                                        enum DwarfAttribute attr,
+                                        enum DwarfForm form,
+                                        uint64 data) { }
+
+  // Called when we have an attribute with signed data to give to
+  // our handler.  The attribute is for the DIE at OFFSET from the
+  // beginning of compilation unit, has a name of ATTR, a form of
+  // FORM, and the actual data of the attribute is in DATA.
+  virtual void ProcessAttributeSigned(uint64 offset,
+                                      enum DwarfAttribute attr,
+                                      enum DwarfForm form,
+                                      int64 data) { }
+
+  // Called when we have an attribute with a buffer of data to give to
+  // our handler.  The attribute is for the DIE at OFFSET from the
+  // beginning of compilation unit, has a name of ATTR, a form of
+  // FORM, and the actual data of the attribute is in DATA, and the
+  // length of the buffer is LENGTH.  The buffer is owned by the
+  // caller, not the callee, and may not persist for very long.  If
+  // you want the data to be available later, it needs to be copied.
+  virtual void ProcessAttributeBuffer(uint64 offset,
+                                      enum DwarfAttribute attr,
+                                      enum DwarfForm form,
+                                      const char* data,
+                                      uint64 len) { }
+
+  // Called when we have an attribute with string data to give to
+  // our handler.  The attribute is for the DIE at OFFSET from the
+  // beginning of compilation unit, has a name of ATTR, a form of
+  // FORM, and the actual data of the attribute is in DATA.
+  virtual void ProcessAttributeString(uint64 offset,
+                                      enum DwarfAttribute attr,
+                                      enum DwarfForm form,
+                                      const string& data) { }
+
+  // Called when finished processing the DIE at OFFSET.
+  // Because DWARF2/3 specifies a tree of DIEs, you may get starts
+  // before ends of the previous DIE, as we process children before
+  // ending the parent.
+  virtual void EndDIE(uint64 offset) { }
+
+};
+
+
+}  // namespace dwarf2reader
+
+#endif  // UTIL_DEBUGINFO_DWARF2READER_H__
diff --git a/src/common/mac/dwarf/functioninfo.cc b/src/common/mac/dwarf/functioninfo.cc
new file mode 100644
index 00000000..e9d33b83
--- /dev/null
+++ b/src/common/mac/dwarf/functioninfo.cc
@@ -0,0 +1,198 @@
+// Copyright 2006 Google Inc. All Rights Reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+// This is a client for the dwarf2reader to extract function and line
+// information from the debug info.
+
+#include <map>
+#include <queue>
+#include <vector>
+
+
+#include "common/mac/dwarf/functioninfo.h"
+
+#include "common/mac/dwarf/bytereader.h"
+
+
+namespace __gnu_cxx 
+{
+  template<> 
+    struct hash<std::string> 
+    {
+      size_t operator()(const std::string& k) const;
+    };
+}
+
+
+namespace dwarf2reader {
+
+CULineInfoHandler::CULineInfoHandler(vector<SourceFileInfo>* files,
+                                     vector<string>* dirs,
+                                     LineMap* linemap):linemap_(linemap),
+                                                       files_(files),
+                                                       dirs_(dirs) {
+  // The dirs and files are 1 indexed, so just make sure we put
+  // nothing in the 0 vector.
+  assert(dirs->size() == 0);
+  assert(files->size() == 0);
+  dirs->push_back("");
+  SourceFileInfo s;
+  s.name = "";
+  s.lowpc = ULLONG_MAX;
+  files->push_back(s);
+}
+
+void CULineInfoHandler::DefineDir(const string& name, uint32 dir_num) {
+  // These should never come out of order, actually
+  assert(dir_num == dirs_->size());
+  dirs_->push_back(name);
+}
+
+void CULineInfoHandler::DefineFile(const string& name,
+                                   int32 file_num, uint32 dir_num,
+                                   uint64 mod_time, uint64 length) {
+  assert(dir_num >= 0);
+  assert(dir_num < dirs_->size());
+
+  // These should never come out of order, actually.
+  if (file_num == (int32)files_->size() || file_num == -1) {
+    string dir = dirs_->at(dir_num);
+
+    SourceFileInfo s;
+    s.lowpc = ULLONG_MAX;
+
+    if (dir == "") {
+      s.name = name;
+    } else {
+      s.name = dir + "/" + name;
+    }
+
+    files_->push_back(s);
+  } else {
+    fprintf(stderr, "error in DefineFile");
+  }
+}
+
+void CULineInfoHandler::AddLine(uint64 address, uint32 file_num,
+                                uint32 line_num, uint32 column_num) {
+  if (file_num < files_->size()) {
+    linemap_->insert(make_pair(address, make_pair(files_->at(file_num).name.c_str(),
+                                                  line_num)));
+
+    if(address < files_->at(file_num).lowpc) {
+      files_->at(file_num).lowpc = address;
+    }
+  } else {
+    fprintf(stderr,"error in AddLine");
+  }
+}
+
+bool CUFunctionInfoHandler::StartCompilationUnit(uint64 offset,
+                                                 uint8 address_size,
+                                                 uint8 offset_size,
+                                                 uint64 cu_length,
+                                                 uint8 dwarf_version) {
+  return true;
+}
+
+
+// For function info, we only care about subprograms and inlined
+// subroutines. For line info, the DW_AT_stmt_list lives in the
+// compile unit tag.
+
+bool CUFunctionInfoHandler::StartDIE(uint64 offset, enum DwarfTag tag,
+                                     const AttributeList& attrs) {
+  switch (tag) {
+    case DW_TAG_subprogram:
+    case DW_TAG_inlined_subroutine: {
+      current_function_info_ = new FunctionInfo;
+      current_function_info_->lowpc = current_function_info_->highpc = 0;
+      current_function_info_->name = "";
+      current_function_info_->line = 0;
+      current_function_info_->file = "";
+      offset_to_funcinfo_->insert(make_pair(offset, current_function_info_));
+    };
+      // FALLTHROUGH
+    case DW_TAG_compile_unit:
+      return true;
+    default:
+      return false;
+  }
+  return false;
+}
+
+// Only care about the name attribute for functions
+
+void CUFunctionInfoHandler::ProcessAttributeString(uint64 offset,
+                                                   enum DwarfAttribute attr,
+                                                   enum DwarfForm form,
+                                                   const string &data) {
+  if (attr == DW_AT_name && current_function_info_)
+    current_function_info_->name = data;
+}
+
+void CUFunctionInfoHandler::ProcessAttributeUnsigned(uint64 offset,
+                                                     enum DwarfAttribute attr,
+                                                     enum DwarfForm form,
+                                                     uint64 data) {
+  if (attr == DW_AT_stmt_list) {
+    SectionMap::const_iterator iter = sections_.find("__debug_line");
+    assert(iter != sections_.end());
+
+    // this should be a scoped_ptr but we dont' use boost :-(
+    auto_ptr<LineInfo> lireader(new LineInfo(iter->second.first + data,
+                                               iter->second.second  - data,
+                                               reader_, linehandler_));
+    lireader->Start();
+  } else if (current_function_info_) {
+    switch (attr) {
+      case DW_AT_low_pc:
+        current_function_info_->lowpc = data;
+        break;
+      case DW_AT_high_pc:
+        current_function_info_->highpc = data;
+        break;
+      case DW_AT_decl_line:
+        current_function_info_->line = data;
+        break;
+      case DW_AT_decl_file:
+        current_function_info_->file = files_->at(data).name;
+        break;
+      default:
+        break;
+    }
+  }
+}
+
+void CUFunctionInfoHandler::EndDIE(uint64 offset) {
+  if (current_function_info_ && current_function_info_->lowpc)
+    address_to_funcinfo_->insert(make_pair(current_function_info_->lowpc,
+                                           current_function_info_));
+}
+
+}  // namespace dwarf2reader
diff --git a/src/common/mac/dwarf/functioninfo.h b/src/common/mac/dwarf/functioninfo.h
new file mode 100644
index 00000000..f529f092
--- /dev/null
+++ b/src/common/mac/dwarf/functioninfo.h
@@ -0,0 +1,175 @@
+// Copyright 2006 Google Inc. All Rights Reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+
+// This file contains the definitions for a DWARF2/3 information
+// collector that uses the DWARF2/3 reader interface to build a mapping
+// of addresses to files, lines, and functions.
+
+#ifndef COMMON_MAC_DWARF_FUNCTIONINFO_H__
+#define COMMON_MAC_DWARF_FUNCTIONINFO_H__
+
+#include <map>
+#include <string>
+#include <utility>
+#include <vector>
+
+#include "common/mac/dwarf/dwarf2reader.h"
+
+
+namespace dwarf2reader {
+
+struct FunctionInfo {
+  // Name of the function
+  string name;
+  // File containing this function
+  string file;
+  // Line number for start of function.
+  uint32 line;
+  // Beginning address for this function
+  uint64 lowpc;
+  // End address for this function.
+  uint64 highpc;
+};
+
+struct SourceFileInfo {
+  // Name of the source file name
+  string name;
+  // Low address of source file name
+  uint64 lowpc;
+};
+
+typedef map<uint64, FunctionInfo*> FunctionMap;
+typedef map<uint64, pair<string, uint32> > LineMap;
+
+// This class is a basic line info handler that fills in the dirs,
+// file, and linemap passed into it with the data produced from the
+// LineInfoHandler.
+class CULineInfoHandler: public LineInfoHandler {
+ public:
+
+  //
+  CULineInfoHandler(vector<SourceFileInfo>* files,
+                    vector<string>* dirs,
+                    LineMap* linemap);
+  virtual ~CULineInfoHandler() { }
+
+  // Called when we define a directory.  We just place NAME into dirs_
+  // at position DIR_NUM.
+  virtual void DefineDir(const string& name, uint32 dir_num);
+
+  // Called when we define a filename.  We just place
+  // concat(dirs_[DIR_NUM], NAME) into files_ at position FILE_NUM.
+  virtual void DefineFile(const string& name, int32 file_num,
+                          uint32 dir_num, uint64 mod_time, uint64 length);
+
+
+  // Called when the line info reader has a new line, address pair
+  // ready for us.  ADDRESS is the address of the code, FILE_NUM is
+  // the file number containing the code, LINE_NUM is the line number
+  // in that file for the code, and COLUMN_NUM is the column number
+  // the code starts at, if we know it (0 otherwise).
+  virtual void AddLine(uint64 address, uint32 file_num, uint32 line_num,
+                       uint32 column_num);
+
+
+ private:
+  LineMap* linemap_;
+  vector<SourceFileInfo>* files_;
+  vector<string>* dirs_;
+};
+
+class CUFunctionInfoHandler: public Dwarf2Handler {
+ public:
+  CUFunctionInfoHandler(vector<SourceFileInfo>* files,
+                        vector<string>* dirs,
+                        LineMap* linemap,
+                        FunctionMap* offset_to_funcinfo,
+                        FunctionMap* address_to_funcinfo,
+                        CULineInfoHandler* linehandler,
+                        const SectionMap& sections,
+                        ByteReader* reader)
+      : files_(files), dirs_(dirs), linemap_(linemap),
+        offset_to_funcinfo_(offset_to_funcinfo),
+        address_to_funcinfo_(address_to_funcinfo),
+        linehandler_(linehandler), sections_(sections),
+        reader_(reader), current_function_info_(NULL) { }
+
+  virtual ~CUFunctionInfoHandler() { }
+
+  // Start to process a compilation unit at OFFSET from the beginning of the
+  // debug_info section.  We want to see all compilation units, so we
+  // always return true.
+
+  virtual bool StartCompilationUnit(uint64 offset, uint8 address_size,
+                                    uint8 offset_size, uint64 cu_length,
+                                    uint8 dwarf_version);
+
+  // Start to process a DIE at OFFSET from the beginning of the
+  // debug_info section.  We only care about function related DIE's.
+  virtual bool StartDIE(uint64 offset, enum DwarfTag tag,
+                        const AttributeList& attrs);
+
+  // Called when we have an attribute with unsigned data to give to
+  // our handler.  The attribute is for the DIE at OFFSET from the
+  // beginning of compilation unit, has a name of ATTR, a form of
+  // FORM, and the actual data of the attribute is in DATA.
+  virtual void ProcessAttributeUnsigned(uint64 offset,
+                                        enum DwarfAttribute attr,
+                                        enum DwarfForm form,
+                                        uint64 data);
+
+  // Called when we have an attribute with string data to give to
+  // our handler.  The attribute is for the DIE at OFFSET from the
+  // beginning of compilation unit, has a name of ATTR, a form of
+  // FORM, and the actual data of the attribute is in DATA.
+  virtual void ProcessAttributeString(uint64 offset,
+                                      enum DwarfAttribute attr,
+                                      enum DwarfForm form,
+                                      const string& data);
+
+  // Called when finished processing the DIE at OFFSET.
+  // Because DWARF2/3 specifies a tree of DIEs, you may get starts
+  // before ends of the previous DIE, as we process children before
+  // ending the parent.
+  virtual void EndDIE(uint64 offset);
+
+ private:
+  vector<SourceFileInfo>* files_;
+  vector<string>* dirs_;
+  LineMap* linemap_;
+  FunctionMap* offset_to_funcinfo_;
+  FunctionMap* address_to_funcinfo_;
+  CULineInfoHandler* linehandler_;
+  const SectionMap& sections_;
+  ByteReader* reader_;
+  FunctionInfo* current_function_info_;
+};
+
+}  // namespace dwarf2reader
+#endif  // COMMON_MAC_DWARF_FUNCTIONINFO_H__
diff --git a/src/common/mac/dwarf/line_state_machine.h b/src/common/mac/dwarf/line_state_machine.h
new file mode 100644
index 00000000..4ba98f74
--- /dev/null
+++ b/src/common/mac/dwarf/line_state_machine.h
@@ -0,0 +1,61 @@
+// Copyright 2008 Google Inc. All Rights Reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+
+#ifndef COMMON_MAC_DWARF_LINE_STATE_MACHINE_H__
+#define COMMON_MAC_DWARF_LINE_STATE_MACHINE_H__
+
+namespace dwarf2reader {
+
+// This is the format of a DWARF2/3 line state machine that we process
+// opcodes using.  There is no need for anything outside the lineinfo
+// processor to know how this works.
+struct LineStateMachine {
+  void Reset(bool default_is_stmt) {
+    file_num = 1;
+    address = 0;
+    line_num = 1;
+    column_num = 0;
+    is_stmt = default_is_stmt;
+    basic_block = false;
+    end_sequence = false;
+  }
+
+  uint32 file_num;
+  uint64 address;
+  uint64 line_num;
+  uint32 column_num;
+  bool is_stmt;  // stmt means statement.
+  bool basic_block;
+  bool end_sequence;
+};
+
+}  // namespace dwarf2reader
+
+
+#endif  // COMMON_MAC_DWARF_LINE_STATE_MACHINE_H__
diff --git a/src/common/mac/dwarf/types.h b/src/common/mac/dwarf/types.h
new file mode 100644
index 00000000..76541597
--- /dev/null
+++ b/src/common/mac/dwarf/types.h
@@ -0,0 +1,46 @@
+// Copyright 2008 Google, Inc.  All Rights reserved
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+
+// This file contains some typedefs for basic types
+
+
+#ifndef _COMMON_MAC_DWARF_TYPES_H__
+#define _COMMON_MAC_DWARF_TYPES_H__
+
+typedef signed char         int8;
+typedef short               int16;
+typedef int                 int32;
+typedef long long           int64;
+
+typedef unsigned char      uint8;
+typedef unsigned short     uint16;
+typedef unsigned int       uint32;
+typedef unsigned long long uint64;
+
+#endif // _COMMON_MAC_DWARF_TYPES_H__
diff --git a/src/tools/mac/crash_report/crash_report.xcodeproj/project.pbxproj b/src/tools/mac/crash_report/crash_report.xcodeproj/project.pbxproj
index f3e04d61..4b31f5ff 100644
--- a/src/tools/mac/crash_report/crash_report.xcodeproj/project.pbxproj
+++ b/src/tools/mac/crash_report/crash_report.xcodeproj/project.pbxproj
@@ -43,6 +43,9 @@
 		9BE650B50B52FE3000611104 /* macho_id.h in CopyFiles */ = {isa = PBXBuildFile; fileRef = 9BE650AF0B52FE3000611104 /* macho_id.h */; };
 		9BE650B60B52FE3000611104 /* macho_walker.cc in Sources */ = {isa = PBXBuildFile; fileRef = 9BE650B00B52FE3000611104 /* macho_walker.cc */; };
 		9BE650B70B52FE3000611104 /* macho_walker.h in CopyFiles */ = {isa = PBXBuildFile; fileRef = 9BE650B10B52FE3000611104 /* macho_walker.h */; };
+		F9C7ECE50E8ABCA600E953AD /* bytereader.cc in Sources */ = {isa = PBXBuildFile; fileRef = F9C7ECE20E8ABCA600E953AD /* bytereader.cc */; };
+		F9C7ECE60E8ABCA600E953AD /* dwarf2reader.cc in Sources */ = {isa = PBXBuildFile; fileRef = F9C7ECE30E8ABCA600E953AD /* dwarf2reader.cc */; };
+		F9C7ECE70E8ABCA600E953AD /* functioninfo.cc in Sources */ = {isa = PBXBuildFile; fileRef = F9C7ECE40E8ABCA600E953AD /* functioninfo.cc */; };
 		FD6625CD0CF4D45C004AC844 /* stackwalker_amd64.cc in Sources */ = {isa = PBXBuildFile; fileRef = FD6625C40CF4D438004AC844 /* stackwalker_amd64.cc */; };
 		FD8EDEAE0CADDAD400A5EDF1 /* stackwalker_sparc.cc in Sources */ = {isa = PBXBuildFile; fileRef = FD8EDEAC0CADDAD400A5EDF1 /* stackwalker_sparc.cc */; };
 		FD8EDEAF0CADDAD400A5EDF1 /* stackwalker_sparc.h in CopyFiles */ = {isa = PBXBuildFile; fileRef = FD8EDEAD0CADDAD400A5EDF1 /* stackwalker_sparc.h */; };
@@ -127,6 +130,9 @@
 		9BE650AF0B52FE3000611104 /* macho_id.h */ = {isa = PBXFileReference; fileEncoding = 30; lastKnownFileType = sourcecode.c.h; name = macho_id.h; path = ../../../common/mac/macho_id.h; sourceTree = SOURCE_ROOT; };
 		9BE650B00B52FE3000611104 /* macho_walker.cc */ = {isa = PBXFileReference; fileEncoding = 30; lastKnownFileType = sourcecode.cpp.cpp; name = macho_walker.cc; path = ../../../common/mac/macho_walker.cc; sourceTree = SOURCE_ROOT; };
 		9BE650B10B52FE3000611104 /* macho_walker.h */ = {isa = PBXFileReference; fileEncoding = 30; lastKnownFileType = sourcecode.c.h; name = macho_walker.h; path = ../../../common/mac/macho_walker.h; sourceTree = SOURCE_ROOT; };
+		F9C7ECE20E8ABCA600E953AD /* bytereader.cc */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; name = bytereader.cc; path = ../../../common/mac/dwarf/bytereader.cc; sourceTree = SOURCE_ROOT; };
+		F9C7ECE30E8ABCA600E953AD /* dwarf2reader.cc */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; name = dwarf2reader.cc; path = ../../../common/mac/dwarf/dwarf2reader.cc; sourceTree = SOURCE_ROOT; };
+		F9C7ECE40E8ABCA600E953AD /* functioninfo.cc */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; name = functioninfo.cc; path = ../../../common/mac/dwarf/functioninfo.cc; sourceTree = SOURCE_ROOT; };
 		FD6625C40CF4D438004AC844 /* stackwalker_amd64.cc */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; name = stackwalker_amd64.cc; path = ../../../processor/stackwalker_amd64.cc; sourceTree = SOURCE_ROOT; };
 		FD6625C50CF4D438004AC844 /* stackwalker_amd64.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; name = stackwalker_amd64.h; path = ../../../processor/stackwalker_amd64.h; sourceTree = SOURCE_ROOT; };
 		FD8EDEAC0CADDAD400A5EDF1 /* stackwalker_sparc.cc */ = {isa = PBXFileReference; fileEncoding = 30; lastKnownFileType = sourcecode.cpp.cpp; name = stackwalker_sparc.cc; path = ../../../processor/stackwalker_sparc.cc; sourceTree = SOURCE_ROOT; };
@@ -148,6 +154,7 @@
 		08FB7794FE84155DC02AAC07 /* crash_report */ = {
 			isa = PBXGroup;
 			children = (
+				F9C7ECE10E8ABC7F00E953AD /* DWARF */,
 				5578003E0BE1F28500EC23E0 /* macho_utilities.cc */,
 				5578003F0BE1F28500EC23E0 /* macho_utilities.h */,
 				9BDF192D0B1BC15D00F8391B /* dump_syms.h */,
@@ -269,6 +276,16 @@
 			name = common;
 			sourceTree = "<group>";
 		};
+		F9C7ECE10E8ABC7F00E953AD /* DWARF */ = {
+			isa = PBXGroup;
+			children = (
+				F9C7ECE20E8ABCA600E953AD /* bytereader.cc */,
+				F9C7ECE30E8ABCA600E953AD /* dwarf2reader.cc */,
+				F9C7ECE40E8ABCA600E953AD /* functioninfo.cc */,
+			);
+			name = DWARF;
+			sourceTree = "<group>";
+		};
 /* End PBXGroup section */
 
 /* Begin PBXNativeTarget section */
@@ -332,6 +349,9 @@
 				8B40BDC00C0638E4009535AF /* logging.cc in Sources */,
 				FD8EDEAE0CADDAD400A5EDF1 /* stackwalker_sparc.cc in Sources */,
 				FD6625CD0CF4D45C004AC844 /* stackwalker_amd64.cc in Sources */,
+				F9C7ECE50E8ABCA600E953AD /* bytereader.cc in Sources */,
+				F9C7ECE60E8ABCA600E953AD /* dwarf2reader.cc in Sources */,
+				F9C7ECE70E8ABCA600E953AD /* functioninfo.cc in Sources */,
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 		};
diff --git a/src/tools/mac/dump_syms/dump_syms.xcodeproj/project.pbxproj b/src/tools/mac/dump_syms/dump_syms.xcodeproj/project.pbxproj
index 3a19cb96..6f22c0d0 100644
--- a/src/tools/mac/dump_syms/dump_syms.xcodeproj/project.pbxproj
+++ b/src/tools/mac/dump_syms/dump_syms.xcodeproj/project.pbxproj
@@ -8,17 +8,15 @@
 
 /* Begin PBXBuildFile section */
 		5578008B0BE1F3AB00EC23E0 /* macho_utilities.cc in Sources */ = {isa = PBXBuildFile; fileRef = 557800890BE1F3AB00EC23E0 /* macho_utilities.cc */; };
-		5578008C0BE1F3AB00EC23E0 /* macho_utilities.h in CopyFiles */ = {isa = PBXBuildFile; fileRef = 5578008A0BE1F3AB00EC23E0 /* macho_utilities.h */; };
 		8DD76F9A0486AA7600D96B5E /* dump_syms.mm in Sources */ = {isa = PBXBuildFile; fileRef = 08FB7796FE84155DC02AAC07 /* dump_syms.mm */; settings = {ATTRIBUTES = (); }; };
 		8DD76F9C0486AA7600D96B5E /* Foundation.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = 08FB779EFE84155DC02AAC07 /* Foundation.framework */; };
-		9BDF186F0B1BB43700F8391B /* dump_syms.h in CopyFiles */ = {isa = PBXBuildFile; fileRef = 9BDF186D0B1BB43700F8391B /* dump_syms.h */; };
-		9BDF18700B1BB43700F8391B /* dump_syms_tool.m in Sources */ = {isa = PBXBuildFile; fileRef = 9BDF186E0B1BB43700F8391B /* dump_syms_tool.m */; };
+		9BDF18700B1BB43700F8391B /* dump_syms_tool.mm in Sources */ = {isa = PBXBuildFile; fileRef = 9BDF186E0B1BB43700F8391B /* dump_syms_tool.mm */; };
 		9BE650470B52F6D800611104 /* file_id.cc in Sources */ = {isa = PBXBuildFile; fileRef = 9BE650410B52F6D800611104 /* file_id.cc */; };
-		9BE650480B52F6D800611104 /* file_id.h in CopyFiles */ = {isa = PBXBuildFile; fileRef = 9BE650420B52F6D800611104 /* file_id.h */; };
 		9BE650490B52F6D800611104 /* macho_id.cc in Sources */ = {isa = PBXBuildFile; fileRef = 9BE650430B52F6D800611104 /* macho_id.cc */; };
-		9BE6504A0B52F6D800611104 /* macho_id.h in CopyFiles */ = {isa = PBXBuildFile; fileRef = 9BE650440B52F6D800611104 /* macho_id.h */; };
 		9BE6504B0B52F6D800611104 /* macho_walker.cc in Sources */ = {isa = PBXBuildFile; fileRef = 9BE650450B52F6D800611104 /* macho_walker.cc */; };
-		9BE6504C0B52F6D800611104 /* macho_walker.h in CopyFiles */ = {isa = PBXBuildFile; fileRef = 9BE650460B52F6D800611104 /* macho_walker.h */; };
+		F95B42320E0E22D100DBDE83 /* bytereader.cc in Sources */ = {isa = PBXBuildFile; fileRef = F95B422C0E0E22D100DBDE83 /* bytereader.cc */; };
+		F95B42330E0E22D100DBDE83 /* dwarf2reader.cc in Sources */ = {isa = PBXBuildFile; fileRef = F95B422F0E0E22D100DBDE83 /* dwarf2reader.cc */; };
+		F9C7ED430E8AD93000E953AD /* functioninfo.cc in Sources */ = {isa = PBXBuildFile; fileRef = F9C7ED420E8AD93000E953AD /* functioninfo.cc */; };
 /* End PBXBuildFile section */
 
 /* Begin PBXCopyFilesBuildPhase section */
@@ -28,11 +26,6 @@
 			dstPath = /usr/share/man/man1/;
 			dstSubfolderSpec = 0;
 			files = (
-				9BDF186F0B1BB43700F8391B /* dump_syms.h in CopyFiles */,
-				9BE650480B52F6D800611104 /* file_id.h in CopyFiles */,
-				9BE6504A0B52F6D800611104 /* macho_id.h in CopyFiles */,
-				9BE6504C0B52F6D800611104 /* macho_walker.h in CopyFiles */,
-				5578008C0BE1F3AB00EC23E0 /* macho_utilities.h in CopyFiles */,
 			);
 			runOnlyForDeploymentPostprocessing = 1;
 		};
@@ -45,13 +38,22 @@
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-		9BDF186E0B1BB43700F8391B /* dump_syms_tool.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = dump_syms_tool.m; sourceTree = "<group>"; };
+		9BDF186E0B1BB43700F8391B /* dump_syms_tool.mm */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.objcpp; path = dump_syms_tool.mm; sourceTree = "<group>"; };
 		9BE650410B52F6D800611104 /* file_id.cc */ = {isa = PBXFileReference; fileEncoding = 30; lastKnownFileType = sourcecode.cpp.cpp; name = file_id.cc; path = ../../../common/mac/file_id.cc; sourceTree = SOURCE_ROOT; };
 		9BE650420B52F6D800611104 /* file_id.h */ = {isa = PBXFileReference; fileEncoding = 30; lastKnownFileType = sourcecode.c.h; name = file_id.h; path = ../../../common/mac/file_id.h; sourceTree = SOURCE_ROOT; };
 		9BE650430B52F6D800611104 /* macho_id.cc */ = {isa = PBXFileReference; fileEncoding = 30; lastKnownFileType = sourcecode.cpp.cpp; name = macho_id.cc; path = ../../../common/mac/macho_id.cc; sourceTree = SOURCE_ROOT; };
 		9BE650440B52F6D800611104 /* macho_id.h */ = {isa = PBXFileReference; fileEncoding = 30; lastKnownFileType = sourcecode.c.h; name = macho_id.h; path = ../../../common/mac/macho_id.h; sourceTree = SOURCE_ROOT; };
 		9BE650450B52F6D800611104 /* macho_walker.cc */ = {isa = PBXFileReference; fileEncoding = 30; lastKnownFileType = sourcecode.cpp.cpp; name = macho_walker.cc; path = ../../../common/mac/macho_walker.cc; sourceTree = SOURCE_ROOT; };
 		9BE650460B52F6D800611104 /* macho_walker.h */ = {isa = PBXFileReference; fileEncoding = 30; lastKnownFileType = sourcecode.c.h; name = macho_walker.h; path = ../../../common/mac/macho_walker.h; sourceTree = SOURCE_ROOT; };
+		F95B422B0E0E22D100DBDE83 /* bytereader-inl.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; name = "bytereader-inl.h"; path = "../../../common/mac/dwarf/bytereader-inl.h"; sourceTree = SOURCE_ROOT; };
+		F95B422C0E0E22D100DBDE83 /* bytereader.cc */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; name = bytereader.cc; path = ../../../common/mac/dwarf/bytereader.cc; sourceTree = SOURCE_ROOT; };
+		F95B422D0E0E22D100DBDE83 /* bytereader.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; name = bytereader.h; path = ../../../common/mac/dwarf/bytereader.h; sourceTree = SOURCE_ROOT; };
+		F95B422E0E0E22D100DBDE83 /* dwarf2enums.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; name = dwarf2enums.h; path = ../../../common/mac/dwarf/dwarf2enums.h; sourceTree = SOURCE_ROOT; };
+		F95B422F0E0E22D100DBDE83 /* dwarf2reader.cc */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; name = dwarf2reader.cc; path = ../../../common/mac/dwarf/dwarf2reader.cc; sourceTree = SOURCE_ROOT; };
+		F95B42300E0E22D100DBDE83 /* dwarf2reader.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; name = dwarf2reader.h; path = ../../../common/mac/dwarf/dwarf2reader.h; sourceTree = SOURCE_ROOT; };
+		F95B42310E0E22D100DBDE83 /* line_state_machine.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; name = line_state_machine.h; path = ../../../common/mac/dwarf/line_state_machine.h; sourceTree = SOURCE_ROOT; };
+		F9C7ED420E8AD93000E953AD /* functioninfo.cc */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; name = functioninfo.cc; path = ../../../common/mac/dwarf/functioninfo.cc; sourceTree = SOURCE_ROOT; };
+		F9F5344D0E7C902C0012363F /* functioninfo.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; name = functioninfo.h; path = ../../../common/mac/dwarf/functioninfo.h; sourceTree = SOURCE_ROOT; };
 /* End PBXFileReference section */
 
 /* Begin PBXFrameworksBuildPhase section */
@@ -69,6 +71,7 @@
 		08FB7794FE84155DC02AAC07 /* dump_syms */ = {
 			isa = PBXGroup;
 			children = (
+				F9F5344B0E7C8FFC0012363F /* DWARF */,
 				557800890BE1F3AB00EC23E0 /* macho_utilities.cc */,
 				5578008A0BE1F3AB00EC23E0 /* macho_utilities.h */,
 				9BE650410B52F6D800611104 /* file_id.cc */,
@@ -79,7 +82,7 @@
 				9BE650460B52F6D800611104 /* macho_walker.h */,
 				9BDF186D0B1BB43700F8391B /* dump_syms.h */,
 				08FB7796FE84155DC02AAC07 /* dump_syms.mm */,
-				9BDF186E0B1BB43700F8391B /* dump_syms_tool.m */,
+				9BDF186E0B1BB43700F8391B /* dump_syms_tool.mm */,
 				08FB779DFE84155DC02AAC07 /* External Frameworks and Libraries */,
 				1AB674ADFE9D54B511CA2CBB /* Products */,
 			);
@@ -102,6 +105,22 @@
 			name = Products;
 			sourceTree = "<group>";
 		};
+		F9F5344B0E7C8FFC0012363F /* DWARF */ = {
+			isa = PBXGroup;
+			children = (
+				F9C7ED420E8AD93000E953AD /* functioninfo.cc */,
+				F9F5344D0E7C902C0012363F /* functioninfo.h */,
+				F95B422E0E0E22D100DBDE83 /* dwarf2enums.h */,
+				F95B422F0E0E22D100DBDE83 /* dwarf2reader.cc */,
+				F95B42300E0E22D100DBDE83 /* dwarf2reader.h */,
+				F95B422D0E0E22D100DBDE83 /* bytereader.h */,
+				F95B422B0E0E22D100DBDE83 /* bytereader-inl.h */,
+				F95B422C0E0E22D100DBDE83 /* bytereader.cc */,
+				F95B42310E0E22D100DBDE83 /* line_state_machine.h */,
+			);
+			name = DWARF;
+			sourceTree = "<group>";
+		};
 /* End PBXGroup section */
 
 /* Begin PBXNativeTarget section */
@@ -129,9 +148,11 @@
 		08FB7793FE84155DC02AAC07 /* Project object */ = {
 			isa = PBXProject;
 			buildConfigurationList = 1DEB927808733DD40010E9CD /* Build configuration list for PBXProject "dump_syms" */;
+			compatibilityVersion = "Xcode 2.4";
 			hasScannedForEncodings = 1;
 			mainGroup = 08FB7794FE84155DC02AAC07 /* dump_syms */;
 			projectDirPath = "";
+			projectRoot = "";
 			targets = (
 				8DD76F960486AA7600D96B5E /* dump_syms */,
 			);
@@ -144,11 +165,14 @@
 			buildActionMask = 2147483647;
 			files = (
 				8DD76F9A0486AA7600D96B5E /* dump_syms.mm in Sources */,
-				9BDF18700B1BB43700F8391B /* dump_syms_tool.m in Sources */,
+				F9C7ED430E8AD93000E953AD /* functioninfo.cc in Sources */,
+				9BDF18700B1BB43700F8391B /* dump_syms_tool.mm in Sources */,
 				9BE650470B52F6D800611104 /* file_id.cc in Sources */,
 				9BE650490B52F6D800611104 /* macho_id.cc in Sources */,
 				9BE6504B0B52F6D800611104 /* macho_walker.cc in Sources */,
 				5578008B0BE1F3AB00EC23E0 /* macho_utilities.cc in Sources */,
+				F95B42320E0E22D100DBDE83 /* bytereader.cc in Sources */,
+				F95B42330E0E22D100DBDE83 /* dwarf2reader.cc in Sources */,
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 		};
@@ -158,7 +182,9 @@
 		1DEB927508733DD40010E9CD /* Debug */ = {
 			isa = XCBuildConfiguration;
 			buildSettings = {
-				COPY_PHASE_STRIP = NO;
+				DEBUG_INFORMATION_FORMAT = "dwarf-with-dsym";
+				DEPLOYMENT_POSTPROCESSING = YES;
+				GCC_CHAR_IS_UNSIGNED_CHAR = YES;
 				GCC_C_LANGUAGE_STANDARD = "compiler-default";
 				GCC_DYNAMIC_NO_PIC = NO;
 				GCC_ENABLE_FIX_AND_CONTINUE = YES;
@@ -186,10 +212,12 @@
 					ppc,
 					i386,
 				);
+				DEBUG_INFORMATION_FORMAT = "dwarf-with-dsym";
+				GCC_CHAR_IS_UNSIGNED_CHAR = YES;
 				GCC_C_LANGUAGE_STANDARD = "compiler-default";
 				GCC_ENABLE_OBJC_EXCEPTIONS = YES;
-				GCC_GENERATE_DEBUGGING_SYMBOLS = NO;
 				GCC_MODEL_TUNING = G5;
+				GCC_OPTIMIZATION_LEVEL = 0;
 				GCC_PRECOMPILE_PREFIX_HEADER = YES;
 				GCC_PREFIX_HEADER = "";
 				HEADER_SEARCH_PATHS = (
@@ -199,6 +227,7 @@
 				INSTALL_PATH = "$(HOME)/bin";
 				OTHER_LDFLAGS = "-lcrypto";
 				PRODUCT_NAME = dump_syms;
+				STRIP_STYLE = "non-global";
 				WARNING_CFLAGS = "-Wall";
 				ZERO_LINK = NO;
 			};
diff --git a/src/tools/mac/dump_syms/dump_syms_tool.mm b/src/tools/mac/dump_syms/dump_syms_tool.mm
new file mode 100644
index 00000000..827cea41
--- /dev/null
+++ b/src/tools/mac/dump_syms/dump_syms_tool.mm
@@ -0,0 +1,142 @@
+// Copyright (c) 2006, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+// dump_syms_tool.m: Command line tool that uses the DumpSymbols class.
+// TODO(waylonis): accept stdin
+
+#include <unistd.h>
+#include <mach-o/arch.h>
+
+#include "dump_syms.h"
+#include "common/mac/macho_utilities.h"
+
+typedef struct {
+  NSString *srcPath;
+  NSString *arch;
+  NSString *uuidStr;
+  BOOL result;
+} Options;
+
+//=============================================================================
+static void Start(Options *options) {
+  DumpSymbols *dump = [[DumpSymbols alloc]
+    initWithContentsOfFile:options->srcPath];
+  
+  if (!dump) {
+    fprintf(stderr, "%s is not a valid Mach-o file\n",
+            [options->srcPath fileSystemRepresentation]);
+    options->result = NO;
+    return;
+  }
+
+  if (![dump setArchitecture:options->arch]) {
+    fprintf(stderr, "Architecture: %s not available in %s\n", 
+            [options->arch UTF8String],
+            [options->srcPath fileSystemRepresentation]);
+    options->result = NO;
+    return;
+  }
+  
+  options->result = [dump writeSymbolFile:@"-"];
+}
+
+//=============================================================================
+static void Usage(int argc, const char *argv[]) {
+  fprintf(stderr, "Output a Breakpad symbol file from a Mach-o file.\n");
+  fprintf(stderr, "Usage: %s [-a ppc|i386|x86] <Mach-o file>\n",
+          argv[0]);
+  fprintf(stderr, "\t-a: Architecture type [default: native]\n");
+  fprintf(stderr, "\t-h: Usage\n");
+  fprintf(stderr, "\t-?: Usage\n");
+}
+
+//=============================================================================
+static void SetupOptions(int argc, const char *argv[], Options *options) {
+  extern int optind;
+  const NXArchInfo *localArchInfo = NXGetLocalArchInfo();
+  signed char ch;
+
+  if (localArchInfo) {
+    if (localArchInfo->cputype & CPU_ARCH_ABI64)
+      options->arch = (localArchInfo->cputype == CPU_TYPE_POWERPC64) ? @"ppc64":
+        @"x86_64";
+    else
+      options->arch = (localArchInfo->cputype == CPU_TYPE_POWERPC) ? @"ppc" :
+        @"x86";
+  }
+
+  while ((ch = getopt(argc, (char * const *)argv, "a:h?")) != -1) {
+    switch (ch) {
+      case 'a':
+        if (strcmp("ppc", optarg) == 0)
+          options->arch = @"ppc";
+        else if (strcmp("x86", optarg) == 0 || strcmp("i386", optarg) == 0)
+          options->arch = @"x86";
+        else if (strcmp("ppc64", optarg) == 0)
+          options->arch = @"ppc64";
+        else if (strcmp("x86_64", optarg) == 0)
+          options->arch = @"x86_64";
+        else {
+          fprintf(stderr, "%s: Invalid architecture: %s\n", argv[0], optarg);
+          Usage(argc, argv);
+          exit(1);
+        }
+          break;
+      case '?':
+      case 'h':
+        Usage(argc, argv);
+        exit(0);
+        break;
+    }
+  }
+  
+  if ((argc - optind) != 1) {
+    fprintf(stderr, "Must specify Mach-o file\n");
+    Usage(argc, argv);
+    exit(1);
+  }
+
+  options->srcPath = [[NSFileManager defaultManager]
+    stringWithFileSystemRepresentation:argv[optind]
+                                length:strlen(argv[optind])];
+}
+
+//=============================================================================
+int main (int argc, const char * argv[]) {
+  NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
+  Options options;
+
+  bzero(&options, sizeof(Options));
+  SetupOptions(argc, argv, &options);
+  Start(&options);
+
+  [pool release];
+
+  return !options.result;
+}