Breakpad Mac symbol dumper: Add new Mach-O reader class.

This patch adds files defining new classes in the google_breakpad::Mach_O
namespace for parsing fat binaries and Mach-O files. These are used in the
new dumper to handle STABS debugging information, DWARF call frame
information, and .eh_frame exception handling stack walking information.

These new classes are independent of endianness and word size, and
therefore can be used on binaries of all the relevant architectures: x86,
x86_64, ppc, and ARM.

The patch adds a complete set of unit tests for the new classes.
A=jimb R=mark (http://breakpad.appspot.com/93001/show, http://breakpad.appspot.com/115001/show)

git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@610 4c0a9323-5329-0410-9bdc-e9ce6186880e

1 files changed, 203 insertions, 6 deletions

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 d6b6d7e0..0c345928 100644
--- a/src/tools/mac/dump_syms/dump_syms.xcodeproj/project.pbxproj
+++ b/src/tools/mac/dump_syms/dump_syms.xcodeproj/project.pbxproj
@@ -7,7 +7,15 @@
 	objects = {
 
 /* Begin PBXBuildFile section */
+		B88FAE0B11665B5700407530 /* test_assembler.cc in Sources */ = {isa = PBXBuildFile; fileRef = B88FAE0911665B5700407530 /* test_assembler.cc */; };
 		B89E0E601166556C00DD08C9 /* libcrypto.dylib in Frameworks */ = {isa = PBXBuildFile; fileRef = B89E0E5F1166556C00DD08C9 /* libcrypto.dylib */; };
+		B89E0E781166576C00DD08C9 /* macho_reader.cc in Sources */ = {isa = PBXBuildFile; fileRef = B89E0E6E1166571D00DD08C9 /* macho_reader.cc */; };
+		B89E0E7A1166576C00DD08C9 /* macho_dump.cc in Sources */ = {isa = PBXBuildFile; fileRef = B89E0E701166573700DD08C9 /* macho_dump.cc */; };
+		B89E0E9911665A7200DD08C9 /* macho_reader_unittest.cc in Sources */ = {isa = PBXBuildFile; fileRef = B89E0E6D1166571D00DD08C9 /* macho_reader_unittest.cc */; };
+		B89E0E9A11665A7200DD08C9 /* macho_reader.cc in Sources */ = {isa = PBXBuildFile; fileRef = B89E0E6E1166571D00DD08C9 /* macho_reader.cc */; };
+		B89E0EA111665AC300DD08C9 /* gtest_main.cc in Sources */ = {isa = PBXBuildFile; fileRef = B89E0E9F11665AC300DD08C9 /* gtest_main.cc */; };
+		B89E0EA211665AC300DD08C9 /* gtest-all.cc in Sources */ = {isa = PBXBuildFile; fileRef = B89E0EA011665AC300DD08C9 /* gtest-all.cc */; };
+		B89E0EA411665AEA00DD08C9 /* gmock-all.cc in Sources */ = {isa = PBXBuildFile; fileRef = B89E0EA311665AEA00DD08C9 /* gmock-all.cc */; };
 		B8C5B5161166534700D34F4E /* functioninfo.cc in Sources */ = {isa = PBXBuildFile; fileRef = F9C7ED420E8AD93000E953AD /* functioninfo.cc */; };
 		B8C5B5171166534700D34F4E /* dwarf2reader.cc in Sources */ = {isa = PBXBuildFile; fileRef = F95B422F0E0E22D100DBDE83 /* dwarf2reader.cc */; };
 		B8C5B5181166534700D34F4E /* bytereader.cc in Sources */ = {isa = PBXBuildFile; fileRef = F95B422C0E0E22D100DBDE83 /* bytereader.cc */; };
@@ -33,7 +41,18 @@
 		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; };
+		B88FAE0911665B5700407530 /* test_assembler.cc */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; name = test_assembler.cc; path = ../../../common/test_assembler.cc; sourceTree = SOURCE_ROOT; };
+		B88FAE0A11665B5700407530 /* test_assembler.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; name = test_assembler.h; path = ../../../common/test_assembler.h; sourceTree = SOURCE_ROOT; };
 		B89E0E5F1166556C00DD08C9 /* libcrypto.dylib */ = {isa = PBXFileReference; lastKnownFileType = "compiled.mach-o.dylib"; name = libcrypto.dylib; path = /usr/lib/libcrypto.dylib; sourceTree = "<absolute>"; };
+		B89E0E6D1166571D00DD08C9 /* macho_reader_unittest.cc */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; name = macho_reader_unittest.cc; path = ../../../common/mac/macho_reader_unittest.cc; sourceTree = SOURCE_ROOT; };
+		B89E0E6E1166571D00DD08C9 /* macho_reader.cc */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; name = macho_reader.cc; path = ../../../common/mac/macho_reader.cc; sourceTree = SOURCE_ROOT; };
+		B89E0E6F1166571D00DD08C9 /* macho_reader.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; name = macho_reader.h; path = ../../../common/mac/macho_reader.h; sourceTree = SOURCE_ROOT; };
+		B89E0E701166573700DD08C9 /* macho_dump.cc */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; path = macho_dump.cc; sourceTree = "<group>"; };
+		B89E0E741166575200DD08C9 /* macho_dump */ = {isa = PBXFileReference; explicitFileType = "compiled.mach-o.executable"; includeInIndex = 0; path = macho_dump; sourceTree = BUILT_PRODUCTS_DIR; };
+		B89E0E9511665A6400DD08C9 /* macho_reader_unittest */ = {isa = PBXFileReference; explicitFileType = "compiled.mach-o.executable"; includeInIndex = 0; path = macho_reader_unittest; sourceTree = BUILT_PRODUCTS_DIR; };
+		B89E0E9F11665AC300DD08C9 /* gtest_main.cc */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; name = gtest_main.cc; path = ../../../testing/gtest/src/gtest_main.cc; sourceTree = SOURCE_ROOT; };
+		B89E0EA011665AC300DD08C9 /* gtest-all.cc */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; name = "gtest-all.cc"; path = "../../../testing/gtest/src/gtest-all.cc"; sourceTree = SOURCE_ROOT; };
+		B89E0EA311665AEA00DD08C9 /* gmock-all.cc */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; name = "gmock-all.cc"; path = "../../../testing/src/gmock-all.cc"; sourceTree = SOURCE_ROOT; };
 		B8C5B5111166531A00D34F4E /* dump_syms */ = {isa = PBXFileReference; explicitFileType = "compiled.mach-o.executable"; includeInIndex = 0; path = dump_syms; sourceTree = BUILT_PRODUCTS_DIR; };
 		B8E8CA0C1156C854009E61B2 /* byteswap.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; name = byteswap.h; path = ../../../common/mac/byteswap.h; sourceTree = SOURCE_ROOT; };
 		F95B422B0E0E22D100DBDE83 /* bytereader-inl.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; name = "bytereader-inl.h"; path = "../../../common/dwarf/bytereader-inl.h"; sourceTree = SOURCE_ROOT; };
@@ -48,6 +67,20 @@
 /* End PBXFileReference section */
 
 /* Begin PBXFrameworksBuildPhase section */
+		B89E0E721166575200DD08C9 /* Frameworks */ = {
+			isa = PBXFrameworksBuildPhase;
+			buildActionMask = 2147483647;
+			files = (
+			);
+			runOnlyForDeploymentPostprocessing = 0;
+		};
+		B89E0E9311665A6400DD08C9 /* Frameworks */ = {
+			isa = PBXFrameworksBuildPhase;
+			buildActionMask = 2147483647;
+			files = (
+			);
+			runOnlyForDeploymentPostprocessing = 0;
+		};
 		B8C5B50F1166531A00D34F4E /* Frameworks */ = {
 			isa = PBXFrameworksBuildPhase;
 			buildActionMask = 2147483647;
@@ -63,19 +96,16 @@
 		08FB7794FE84155DC02AAC07 /* dump_syms */ = {
 			isa = PBXGroup;
 			children = (
+				B89E0E9D11665A9500DD08C9 /* TESTING */,
 				F9F5344B0E7C8FFC0012363F /* DWARF */,
+				B89E0E6C1166569700DD08C9 /* MACHO */,
 				B8E8CA0C1156C854009E61B2 /* byteswap.h */,
-				557800890BE1F3AB00EC23E0 /* macho_utilities.cc */,
-				5578008A0BE1F3AB00EC23E0 /* macho_utilities.h */,
 				9BE650410B52F6D800611104 /* file_id.cc */,
 				9BE650420B52F6D800611104 /* file_id.h */,
-				9BE650430B52F6D800611104 /* macho_id.cc */,
-				9BE650440B52F6D800611104 /* macho_id.h */,
-				9BE650450B52F6D800611104 /* macho_walker.cc */,
-				9BE650460B52F6D800611104 /* macho_walker.h */,
 				9BDF186D0B1BB43700F8391B /* dump_syms.h */,
 				08FB7796FE84155DC02AAC07 /* dump_syms.mm */,
 				9BDF186E0B1BB43700F8391B /* dump_syms_tool.mm */,
+				B89E0E701166573700DD08C9 /* macho_dump.cc */,
 				08FB779DFE84155DC02AAC07 /* External Frameworks and Libraries */,
 				1AB674ADFE9D54B511CA2CBB /* Products */,
 			);
@@ -95,10 +125,40 @@
 			isa = PBXGroup;
 			children = (
 				B8C5B5111166531A00D34F4E /* dump_syms */,
+				B89E0E741166575200DD08C9 /* macho_dump */,
+				B89E0E9511665A6400DD08C9 /* macho_reader_unittest */,
 			);
 			name = Products;
 			sourceTree = "<group>";
 		};
+		B89E0E6C1166569700DD08C9 /* MACHO */ = {
+			isa = PBXGroup;
+			children = (
+				B89E0E6D1166571D00DD08C9 /* macho_reader_unittest.cc */,
+				B89E0E6E1166571D00DD08C9 /* macho_reader.cc */,
+				B89E0E6F1166571D00DD08C9 /* macho_reader.h */,
+				557800890BE1F3AB00EC23E0 /* macho_utilities.cc */,
+				5578008A0BE1F3AB00EC23E0 /* macho_utilities.h */,
+				9BE650430B52F6D800611104 /* macho_id.cc */,
+				9BE650440B52F6D800611104 /* macho_id.h */,
+				9BE650450B52F6D800611104 /* macho_walker.cc */,
+				9BE650460B52F6D800611104 /* macho_walker.h */,
+			);
+			name = MACHO;
+			sourceTree = "<group>";
+		};
+		B89E0E9D11665A9500DD08C9 /* TESTING */ = {
+			isa = PBXGroup;
+			children = (
+				B88FAE0911665B5700407530 /* test_assembler.cc */,
+				B88FAE0A11665B5700407530 /* test_assembler.h */,
+				B89E0EA311665AEA00DD08C9 /* gmock-all.cc */,
+				B89E0E9F11665AC300DD08C9 /* gtest_main.cc */,
+				B89E0EA011665AC300DD08C9 /* gtest-all.cc */,
+			);
+			name = TESTING;
+			sourceTree = "<group>";
+		};
 		F9F5344B0E7C8FFC0012363F /* DWARF */ = {
 			isa = PBXGroup;
 			children = (
@@ -118,6 +178,38 @@
 /* End PBXGroup section */
 
 /* Begin PBXNativeTarget section */
+		B89E0E731166575200DD08C9 /* macho_dump */ = {
+			isa = PBXNativeTarget;
+			buildConfigurationList = B89E0E7F116657A100DD08C9 /* Build configuration list for PBXNativeTarget "macho_dump" */;
+			buildPhases = (
+				B89E0E711166575200DD08C9 /* Sources */,
+				B89E0E721166575200DD08C9 /* Frameworks */,
+			);
+			buildRules = (
+			);
+			dependencies = (
+			);
+			name = macho_dump;
+			productName = macho_dump;
+			productReference = B89E0E741166575200DD08C9 /* macho_dump */;
+			productType = "com.apple.product-type.tool";
+		};
+		B89E0E9411665A6400DD08C9 /* macho_reader_unittest */ = {
+			isa = PBXNativeTarget;
+			buildConfigurationList = B89E0E9E11665A9600DD08C9 /* Build configuration list for PBXNativeTarget "macho_reader_unittest" */;
+			buildPhases = (
+				B89E0E9211665A6400DD08C9 /* Sources */,
+				B89E0E9311665A6400DD08C9 /* Frameworks */,
+			);
+			buildRules = (
+			);
+			dependencies = (
+			);
+			name = macho_reader_unittest;
+			productName = macho_reader_unittest;
+			productReference = B89E0E9511665A6400DD08C9 /* macho_reader_unittest */;
+			productType = "com.apple.product-type.tool";
+		};
 		B8C5B5101166531A00D34F4E /* dump_syms */ = {
 			isa = PBXNativeTarget;
 			buildConfigurationList = B8C5B5151166533900D34F4E /* Build configuration list for PBXNativeTarget "dump_syms" */;
@@ -139,6 +231,9 @@
 /* Begin PBXProject section */
 		08FB7793FE84155DC02AAC07 /* Project object */ = {
 			isa = PBXProject;
+			attributes = {
+				BuildIndependentTargetsInParallel = NO;
+			};
 			buildConfigurationList = 1DEB927808733DD40010E9CD /* Build configuration list for PBXProject "dump_syms" */;
 			compatibilityVersion = "Xcode 2.4";
 			hasScannedForEncodings = 1;
@@ -147,11 +242,35 @@
 			projectRoot = "";
 			targets = (
 				B8C5B5101166531A00D34F4E /* dump_syms */,
+				B89E0E731166575200DD08C9 /* macho_dump */,
+				B89E0E9411665A6400DD08C9 /* macho_reader_unittest */,
 			);
 		};
 /* End PBXProject section */
 
 /* Begin PBXSourcesBuildPhase section */
+		B89E0E711166575200DD08C9 /* Sources */ = {
+			isa = PBXSourcesBuildPhase;
+			buildActionMask = 2147483647;
+			files = (
+				B89E0E781166576C00DD08C9 /* macho_reader.cc in Sources */,
+				B89E0E7A1166576C00DD08C9 /* macho_dump.cc in Sources */,
+			);
+			runOnlyForDeploymentPostprocessing = 0;
+		};
+		B89E0E9211665A6400DD08C9 /* Sources */ = {
+			isa = PBXSourcesBuildPhase;
+			buildActionMask = 2147483647;
+			files = (
+				B89E0E9911665A7200DD08C9 /* macho_reader_unittest.cc in Sources */,
+				B89E0E9A11665A7200DD08C9 /* macho_reader.cc in Sources */,
+				B89E0EA111665AC300DD08C9 /* gtest_main.cc in Sources */,
+				B89E0EA211665AC300DD08C9 /* gtest-all.cc in Sources */,
+				B89E0EA411665AEA00DD08C9 /* gmock-all.cc in Sources */,
+				B88FAE0B11665B5700407530 /* test_assembler.cc in Sources */,
+			);
+			runOnlyForDeploymentPostprocessing = 0;
+		};
 		B8C5B50E1166531A00D34F4E /* Sources */ = {
 			isa = PBXSourcesBuildPhase;
 			buildActionMask = 2147483647;
@@ -192,6 +311,66 @@
 			};
 			name = Release;
 		};
+		B89E0E761166575300DD08C9 /* Debug */ = {
+			isa = XCBuildConfiguration;
+			buildSettings = {
+				ALWAYS_SEARCH_USER_PATHS = NO;
+				COPY_PHASE_STRIP = NO;
+				GCC_DYNAMIC_NO_PIC = NO;
+				GCC_ENABLE_FIX_AND_CONTINUE = YES;
+				GCC_MODEL_TUNING = G5;
+				GCC_OPTIMIZATION_LEVEL = 0;
+				INSTALL_PATH = /usr/local/bin;
+				PREBINDING = NO;
+				PRODUCT_NAME = macho_dump;
+			};
+			name = Debug;
+		};
+		B89E0E771166575300DD08C9 /* Release */ = {
+			isa = XCBuildConfiguration;
+			buildSettings = {
+				ALWAYS_SEARCH_USER_PATHS = NO;
+				COPY_PHASE_STRIP = YES;
+				DEBUG_INFORMATION_FORMAT = "dwarf-with-dsym";
+				GCC_ENABLE_FIX_AND_CONTINUE = NO;
+				GCC_MODEL_TUNING = G5;
+				INSTALL_PATH = /usr/local/bin;
+				PREBINDING = NO;
+				PRODUCT_NAME = macho_dump;
+				ZERO_LINK = NO;
+			};
+			name = Release;
+		};
+		B89E0E9711665A6400DD08C9 /* Debug */ = {
+			isa = XCBuildConfiguration;
+			buildSettings = {
+				ALWAYS_SEARCH_USER_PATHS = NO;
+				COPY_PHASE_STRIP = NO;
+				GCC_DYNAMIC_NO_PIC = NO;
+				GCC_ENABLE_FIX_AND_CONTINUE = YES;
+				GCC_MODEL_TUNING = G5;
+				GCC_OPTIMIZATION_LEVEL = 0;
+				INSTALL_PATH = /usr/local/bin;
+				PREBINDING = NO;
+				PRODUCT_NAME = macho_reader_unittest;
+			};
+			name = Debug;
+		};
+		B89E0E9811665A6400DD08C9 /* Release */ = {
+			isa = XCBuildConfiguration;
+			buildSettings = {
+				ALWAYS_SEARCH_USER_PATHS = NO;
+				COPY_PHASE_STRIP = YES;
+				DEBUG_INFORMATION_FORMAT = "dwarf-with-dsym";
+				GCC_ENABLE_FIX_AND_CONTINUE = NO;
+				GCC_MODEL_TUNING = G5;
+				INSTALL_PATH = /usr/local/bin;
+				PREBINDING = NO;
+				PRODUCT_NAME = macho_reader_unittest;
+				ZERO_LINK = NO;
+			};
+			name = Release;
+		};
 		B8C5B5131166531B00D34F4E /* Debug */ = {
 			isa = XCBuildConfiguration;
 			buildSettings = {
@@ -235,6 +414,24 @@
 			defaultConfigurationIsVisible = 0;
 			defaultConfigurationName = Release;
 		};
+		B89E0E7F116657A100DD08C9 /* Build configuration list for PBXNativeTarget "macho_dump" */ = {
+			isa = XCConfigurationList;
+			buildConfigurations = (
+				B89E0E761166575300DD08C9 /* Debug */,
+				B89E0E771166575300DD08C9 /* Release */,
+			);
+			defaultConfigurationIsVisible = 0;
+			defaultConfigurationName = Release;
+		};
+		B89E0E9E11665A9600DD08C9 /* Build configuration list for PBXNativeTarget "macho_reader_unittest" */ = {
+			isa = XCConfigurationList;
+			buildConfigurations = (
+				B89E0E9711665A6400DD08C9 /* Debug */,
+				B89E0E9811665A6400DD08C9 /* Release */,
+			);
+			defaultConfigurationIsVisible = 0;
+			defaultConfigurationName = Release;
+		};
 		B8C5B5151166533900D34F4E /* Build configuration list for PBXNativeTarget "dump_syms" */ = {
 			isa = XCConfigurationList;
 			buildConfigurations = (