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https://github.com/yuzu-emu/breakpad.git
synced 2024-11-24 04:25:42 +01:00
fixes for issue 129 : reviewed by Waylonis
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@125 4c0a9323-5329-0410-9bdc-e9ce6186880e
This commit is contained in:
ladderbreaker
parent
530a7ad99e
commit
1f3d2571d1
@ -42,7 +42,8 @@
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NSMutableDictionary *sources_; // Address and Source file paths (STRONG)
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NSMutableArray *cppAddresses_; // Addresses of C++ symbols (STRONG)
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NSMutableDictionary *headers_; // Mach-o header information (STRONG)
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NSNumber *lastFunctionStart_; // Address of last function symbol parsed
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NSMutableDictionary *lastFunctionStartDict_; // Keyed by section# (STRONG)
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NSMutableDictionary *sectionNumbers_; // Keyed by seg/sect name (STRONG)
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}
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- (id)initWithContentsOfFile:(NSString *)machoFile;
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@ -66,11 +66,12 @@ static const int kTextSection = 1;
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standardIn:(NSFileHandle *)standardIn;
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- (NSArray *)convertCPlusPlusSymbols:(NSArray *)symbols;
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- (void)convertSymbols;
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- (void)addFunction:(NSString *)name line:(int)line address:(uint64_t)address;
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- (void)addFunction:(NSString *)name line:(int)line address:(uint64_t)address section:(int)section;
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- (BOOL)processSymbolItem:(struct nlist_64 *)list stringTable:(char *)table;
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- (BOOL)loadSymbolInfo:(void *)base offset:(uint32_t)offset;
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- (BOOL)loadSymbolInfo64:(void *)base offset:(uint32_t)offset;
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- (BOOL)loadSymbolInfoForArchitecture;
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- (void)generateSectionDictionary:(struct mach_header*)header;
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- (BOOL)loadHeader:(void *)base offset:(uint32_t)offset;
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- (BOOL)loadHeader64:(void *)base offset:(uint32_t)offset;
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- (BOOL)loadModuleInfo;
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@ -221,7 +222,7 @@ static BOOL StringTailMatches(NSString *str, NSString *tail) {
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}
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//=============================================================================
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- (void)addFunction:(NSString *)name line:(int)line address:(uint64_t)address {
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- (void)addFunction:(NSString *)name line:(int)line address:(uint64_t)address section:(int)section {
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NSNumber *addressNum = [NSNumber numberWithUnsignedLongLong:address];
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if (!address)
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@ -276,8 +277,9 @@ static BOOL StringTailMatches(NSString *str, NSString *tail) {
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forKey:kAddressSourceLineKey];
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// Save the function name so that we can add the end of function address
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if ([name length])
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lastFunctionStart_ = addressNum;
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if ([name length]) {
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[lastFunctionStartDict_ setObject:addressNum forKey:[NSNumber numberWithUnsignedInt:section] ];
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}
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}
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//=============================================================================
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@ -285,10 +287,18 @@ static BOOL StringTailMatches(NSString *str, NSString *tail) {
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uint32_t n_strx = list->n_un.n_strx;
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BOOL result = NO;
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// We only care about symbols in the __text sect
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if (list->n_sect != kTextSection)
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// We don't care about non-section specific information
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if (list->n_sect == 0 )
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return NO;
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int line = list->n_desc;
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// We only care about line number information in __TEXT __text
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uint32_t mainSection = [[sectionNumbers_ objectForKey:@"__TEXT__text" ] unsignedLongValue];
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if(list->n_sect != mainSection) {
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line = 0;
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}
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// Extract debugging information:
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// Doc: http://developer.apple.com/documentation/DeveloperTools/gdb/stabs/stabs_toc.html
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// Header: /usr/include/mach-o/stab.h:
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@ -317,27 +327,32 @@ static BOOL StringTailMatches(NSString *str, NSString *tail) {
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// The function has a ":" followed by some stuff
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fn = [fn substringToIndex:range.location];
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[self addFunction:fn line:list->n_desc address:list->n_value];
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[self addFunction:fn line:line address:list->n_value section:list->n_sect ];
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result = YES;
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} else if (list->n_type == N_SLINE) {
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[self addFunction:nil line:list->n_desc address:list->n_value];
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} else if (list->n_type == N_SLINE && list->n_sect == mainSection ) {
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[self addFunction:nil line:line address:list->n_value section:list->n_sect ];
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result = YES;
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} else if (((list->n_type & N_TYPE) == N_SECT) && !(list->n_type & N_STAB)) {
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// Regular symbols or ones that are external
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NSString *fn = [NSString stringWithUTF8String:&table[n_strx]];
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[self addFunction:fn line:0 address:list->n_value];
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[self addFunction:fn line:0 address:list->n_value section:list->n_sect ];
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result = YES;
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} else if (list->n_type == N_ENSYM) {
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if (lastFunctionStart_) {
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unsigned long long start = [lastFunctionStart_ unsignedLongLongValue];
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} else if (list->n_type == N_ENSYM && list->n_sect == mainSection ) {
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NSNumber *lastFunctionStart = [lastFunctionStartDict_
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objectForKey:[NSNumber numberWithUnsignedLongLong:list->n_sect] ];
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if (lastFunctionStart) {
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unsigned long long start = [lastFunctionStart unsignedLongLongValue];
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unsigned long long size = list->n_value - start;
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NSMutableDictionary *dict = [addresses_ objectForKey:lastFunctionStart_];
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NSMutableDictionary *dict = [addresses_ objectForKey:lastFunctionStart];
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assert(dict);
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assert(list->n_value > start);
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[dict setObject:[NSNumber numberWithUnsignedLongLong:size]
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forKey:kFunctionSizeKey];
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lastFunctionStart_ = nil;
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[lastFunctionStartDict_ removeObjectForKey:[NSNumber numberWithUnsignedLongLong:list->n_sect] ];
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}
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}
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@ -361,7 +376,7 @@ static BOOL StringTailMatches(NSString *str, NSString *tail) {
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if (!addresses_)
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addresses_ = [[NSMutableDictionary alloc] init];
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for (uint32_t i = 0; cmd && (i < count); i++) {
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for (uint32_t i = 0; cmd && (i < count); ++i) {
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if (cmd->cmd == symbolTableCommand) {
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struct symtab_command *symtab = (struct symtab_command *)cmd;
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uint32_t ncmds = SwapLongIfNeeded(symtab->nsyms);
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@ -453,6 +468,46 @@ static BOOL StringTailMatches(NSString *str, NSString *tail) {
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return result;
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}
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//=============================================================================
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// build a dictionary of section numbers keyed off a string
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// which is the concatenation of the segment name and the section name
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- (void)generateSectionDictionary:(struct mach_header*)header {
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BOOL swap = (header->magic == MH_CIGAM);
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uint32_t count = SwapLongIfNeeded(header->ncmds);
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struct load_command *cmd =
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(struct load_command *)((uint32_t)header + sizeof(struct mach_header));
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uint32_t segmentCommand = SwapLongIfNeeded(LC_SEGMENT);
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uint32_t sectionNumber = 1; // section numbers are counted from 1
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if (!sectionNumbers_)
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sectionNumbers_ = [[NSMutableDictionary alloc] init];
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// loop through every segment command, then through every section
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// contained inside each of them
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for (uint32_t i = 0; cmd && (i < count); ++i) {
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if (cmd->cmd == segmentCommand) {
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struct segment_command *seg = (struct segment_command *)cmd;
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section *sect = (section *)((uint32_t)cmd + sizeof(segment_command));
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uint32_t nsects = SwapLongIfNeeded(seg->nsects);
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for (uint32_t j = 0; j < nsects; ++j) {
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//printf("%d: %s %s\n", sectionNumber, seg->segname, sect->sectname );
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NSString *segSectName = [NSString stringWithFormat:@"%s%s",
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seg->segname, sect->sectname ];
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[sectionNumbers_ setValue:[NSNumber numberWithUnsignedLong:sectionNumber]
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forKey:segSectName ];
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++sect;
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++sectionNumber;
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}
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}
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uint32_t cmdSize = SwapLongIfNeeded(cmd->cmdsize);
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cmd = (struct load_command *)((uint32_t)cmd + cmdSize);
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}
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}
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//=============================================================================
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- (BOOL)loadHeader:(void *)base offset:(uint32_t)offset {
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struct mach_header *header = (struct mach_header *)((uint32_t)base + offset);
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@ -460,11 +515,14 @@ static BOOL StringTailMatches(NSString *str, NSString *tail) {
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uint32_t count = SwapLongIfNeeded(header->ncmds);
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struct load_command *cmd =
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(struct load_command *)((uint32_t)header + sizeof(struct mach_header));
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uint32_t segmentCommand = SwapLongIfNeeded(LC_SEGMENT);
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for (uint32_t i = 0; cmd && (i < count); i++) {
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uint32_t segmentCommand = SwapLongIfNeeded(LC_SEGMENT);
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[self generateSectionDictionary:header];
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for (uint32_t i = 0; cmd && (i < count); ++i) {
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if (cmd->cmd == segmentCommand) {
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struct segment_command *seg = (struct segment_command *)cmd;
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if (!strcmp(seg->segname, "__TEXT")) {
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uint32_t addr = SwapLongIfNeeded(seg->vmaddr);
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uint32_t size = SwapLongIfNeeded(seg->vmsize);
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@ -500,7 +558,7 @@ static BOOL StringTailMatches(NSString *str, NSString *tail) {
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struct load_command *cmd =
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(struct load_command *)((uint32_t)header + sizeof(struct mach_header_64));
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for (uint32_t i = 0; cmd && (i < count); i++) {
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for (uint32_t i = 0; cmd && (i < count); ++i) {
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uint32_t segmentCommand = SwapLongIfNeeded(LC_SEGMENT_64);
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if (cmd->cmd == segmentCommand) {
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struct segment_command_64 *seg = (struct segment_command_64 *)cmd;
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@ -610,8 +668,8 @@ static BOOL WriteFormat(int fd, const char *fmt, ...) {
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uint64_t moduleSize =
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moduleSizeNum ? [moduleSizeNum unsignedLongLongValue] : 0;
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lastFunctionStart_ = nil;
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[lastFunctionStartDict_ removeAllObjects];
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// Gather the information
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[self loadSymbolInfoForArchitecture];
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[self convertSymbols];
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@ -684,6 +742,18 @@ static BOOL WriteFormat(int fd, const char *fmt, ...) {
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symbol = [dict objectForKey:kAddressSymbolKey];
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// Skip some symbols
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if (StringHeadMatches(symbol, @"vtable for"))
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continue;
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if (StringHeadMatches(symbol, @"__static_initialization_and_destruction_0"))
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continue;
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if (StringHeadMatches(symbol, @"_GLOBAL__I__"))
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continue;
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if (StringHeadMatches(symbol, @"__func__."))
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continue;
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if (StringHeadMatches(symbol, @"__gnu"))
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continue;
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@ -710,9 +780,10 @@ static BOOL WriteFormat(int fd, const char *fmt, ...) {
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}
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}
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NSNumber *functionLength = [dict objectForKey:kFunctionSizeKey];
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if (line) {
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if (symbol) {
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NSNumber *functionLength = [dict objectForKey:kFunctionSizeKey];
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if (symbol && functionLength) {
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uint64_t functionLengthVal = [functionLength unsignedLongLongValue];
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// Function
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@ -753,6 +824,10 @@ static BOOL WriteFormat(int fd, const char *fmt, ...) {
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return nil;
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}
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// keep track of last function start address on a per-section basis
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if (!lastFunctionStartDict_)
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lastFunctionStartDict_ = [[NSMutableDictionary alloc] init];
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// If there's more than one, use the native one
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if ([headers_ count] > 1) {
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const NXArchInfo *localArchInfo = NXGetLocalArchInfo();
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@ -790,6 +865,7 @@ static BOOL WriteFormat(int fd, const char *fmt, ...) {
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[addresses_ release];
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[sources_ release];
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[headers_ release];
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[lastFunctionStartDict_ release];
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[super dealloc];
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}
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