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// -*- mode: ObjC -*-
// This file is part of class-dump, a utility for examining the Objective-C segment of Mach-O files.
// Copyright (C) 1997-1998, 2000-2001, 2004-2009 Steve Nygard.
#import "CDSection32.h"
#include <mach-o/swap.h>
#import "CDFatFile.h"
#import "CDMachOFile.h"
#import "CDLCSegment32.h"
@implementation CDSection32
// Just to resolve multiple different definitions...
- (id)initWithDataCursor:(CDDataCursor *)cursor segment:(CDLCSegment32 *)aSegment;
{
char buf[17];
NSString *str;
if ([super init] == nil)
return nil;
nonretainedSegment = aSegment;
[cursor readBytesOfLength:16 intoBuffer:section.sectname];
[cursor readBytesOfLength:16 intoBuffer:section.segname];
section.addr = [cursor readInt32];
section.size = [cursor readInt32];
section.offset = [cursor readInt32];
section.align = [cursor readInt32];
section.reloff = [cursor readInt32];
section.nreloc = [cursor readInt32];
section.flags = [cursor readInt32];
section.reserved1 = [cursor readInt32];
section.reserved2 = [cursor readInt32];
// These aren't guaranteed to be null terminated. Witness __cstring_object in __OBJC segment
memcpy(buf, section.segname, 16);
buf[16] = 0;
str = [[NSString alloc] initWithBytes:buf length:strlen(buf) encoding:NSASCIIStringEncoding];
[self setSegmentName:str];
[str release];
memcpy(buf, section.sectname, 16);
buf[16] = 0;
str = [[NSString alloc] initWithBytes:buf length:strlen(buf) encoding:NSASCIIStringEncoding];
[self setSectionName:str];
[str release];
return self;
}
- (CDLCSegment32 *)segment;
{
return nonretainedSegment;
}
- (CDMachOFile *)machOFile;
{
return [[self segment] machOFile];
}
- (NSUInteger)addr;
{
return section.addr;
}
- (NSUInteger)size;
{
return section.size;
}
- (uint32_t)offset;
{
return section.offset;
}
- (void)loadData;
{
if (_flags.hasLoadedData == NO) {
data = [[NSData alloc] initWithBytes:[[nonretainedSegment machOFile] machODataBytes] + section.offset length:section.size];
_flags.hasLoadedData = YES;
}
}
#if 0
- (NSString *)description;
{
return [NSString stringWithFormat:@"addr: 0x%08x, offset: %8d, size: %8d [0x%8x], segment; '%@', section: '%@'",
section.addr, section.offset, section.size, section.size, segmentName, sectionName];
}
#endif
- (BOOL)containsAddress:(NSUInteger)address;
{
return (address >= section.addr) && (address < section.addr + section.size);
}
- (NSUInteger)fileOffsetForAddress:(NSUInteger)address;
{
NSParameterAssert([self containsAddress:address]);
return section.offset + address - section.addr;
}
@end