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| 1 // -*- mode: ObjC -*- |
| 2 |
| 3 // This file is part of class-dump, a utility for examining the Objective-C seg
ment of Mach-O files. |
| 4 // Copyright (C) 1997-1998, 2000-2001, 2004-2010 Steve Nygard. |
| 5 |
| 6 #import "CDSection32.h" |
| 7 |
| 8 #import "CDFatFile.h" |
| 9 #import "CDMachOFile.h" |
| 10 #import "CDLCSegment32.h" |
| 11 |
| 12 @implementation CDSection32 |
| 13 |
| 14 // Just to resolve multiple different definitions... |
| 15 - (id)initWithDataCursor:(CDDataCursor *)cursor segment:(CDLCSegment32 *)aSegmen
t; |
| 16 { |
| 17 char buf[17]; |
| 18 NSString *str; |
| 19 |
| 20 if ([super init] == nil) |
| 21 return nil; |
| 22 |
| 23 nonretained_segment = aSegment; |
| 24 |
| 25 [cursor readBytesOfLength:16 intoBuffer:section.sectname]; |
| 26 [cursor readBytesOfLength:16 intoBuffer:section.segname]; |
| 27 section.addr = [cursor readInt32]; |
| 28 section.size = [cursor readInt32]; |
| 29 section.offset = [cursor readInt32]; |
| 30 section.align = [cursor readInt32]; |
| 31 section.reloff = [cursor readInt32]; |
| 32 section.nreloc = [cursor readInt32]; |
| 33 section.flags = [cursor readInt32]; |
| 34 section.reserved1 = [cursor readInt32]; |
| 35 section.reserved2 = [cursor readInt32]; |
| 36 |
| 37 // These aren't guaranteed to be null terminated. Witness __cstring_object
in __OBJC segment |
| 38 |
| 39 memcpy(buf, section.segname, 16); |
| 40 buf[16] = 0; |
| 41 str = [[NSString alloc] initWithBytes:buf length:strlen(buf) encoding:NSASCI
IStringEncoding]; |
| 42 [self setSegmentName:str]; |
| 43 [str release]; |
| 44 |
| 45 memcpy(buf, section.sectname, 16); |
| 46 buf[16] = 0; |
| 47 str = [[NSString alloc] initWithBytes:buf length:strlen(buf) encoding:NSASCI
IStringEncoding]; |
| 48 [self setSectionName:str]; |
| 49 [str release]; |
| 50 |
| 51 return self; |
| 52 } |
| 53 |
| 54 - (CDLCSegment32 *)segment; |
| 55 { |
| 56 return nonretained_segment; |
| 57 } |
| 58 |
| 59 - (CDMachOFile *)machOFile; |
| 60 { |
| 61 return [[self segment] machOFile]; |
| 62 } |
| 63 |
| 64 - (NSUInteger)addr; |
| 65 { |
| 66 return section.addr; |
| 67 } |
| 68 |
| 69 - (NSUInteger)size; |
| 70 { |
| 71 return section.size; |
| 72 } |
| 73 |
| 74 - (uint32_t)offset; |
| 75 { |
| 76 return section.offset; |
| 77 } |
| 78 |
| 79 - (void)loadData; |
| 80 { |
| 81 if (_flags.hasLoadedData == NO) { |
| 82 data = [[NSData alloc] initWithBytes:[[nonretained_segment machOFile] ma
chODataBytes] + section.offset length:section.size]; |
| 83 _flags.hasLoadedData = YES; |
| 84 } |
| 85 } |
| 86 |
| 87 #if 1 |
| 88 - (NSString *)description; |
| 89 { |
| 90 return [NSString stringWithFormat:@"addr: 0x%08x, offset: %8d, size: %8d [0x
%8x], segment; '%@', section: '%@'", |
| 91 section.addr, section.offset, section.size, section.size, s
egmentName, sectionName]; |
| 92 } |
| 93 #endif |
| 94 |
| 95 - (BOOL)containsAddress:(NSUInteger)address; |
| 96 { |
| 97 return (address >= section.addr) && (address < section.addr + section.size); |
| 98 } |
| 99 |
| 100 - (NSUInteger)fileOffsetForAddress:(NSUInteger)address; |
| 101 { |
| 102 NSParameterAssert([self containsAddress:address]); |
| 103 return section.offset + address - section.addr; |
| 104 } |
| 105 |
| 106 @end |
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