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DyldInfo.mm
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/*
* DyldInfo.mm
* MachOView
*
* Created by psaghelyi on 21/09/2010.
*
*/
#import "Common.h"
#import "DyldInfo.h"
#import "ReadWrite.h"
#import "DataController.h"
using namespace std;
//============================================================================
@implementation DyldHelper
//-----------------------------------------------------------------------------
-(id) initWithSymbols:(NSDictionary *)symbolNames is64Bit:(bool)is64Bit
{
if (self = [super init])
{
externalMap = [[NSMutableDictionary alloc] initWithCapacity:[symbolNames count]];
NSEnumerator * enumerator = [symbolNames keyEnumerator];
id key;
while ((key = [enumerator nextObject]) != nil)
{
NSNumber * symbolIndex = (NSNumber *)key;
// negative index indicates that it is external
if ((is64Bit == NO && (int32_t)[symbolIndex unsignedLongValue] < 0) ||
(int64_t)[symbolIndex unsignedLongLongValue] < 0)
{
[externalMap setObject:key forKey:[symbolNames objectForKey:key]];
}
}
}
return self;
}
//-----------------------------------------------------------------------------
+(DyldHelper *) dyldHelperWithSymbols:(NSDictionary *)symbolNames is64Bit:(bool)is64Bit
{
return [[DyldHelper alloc] initWithSymbols:symbolNames is64Bit:is64Bit];
}
//-----------------------------------------------------------------------------
-(NSNumber *) indexForSymbol:(NSString *)symbolName
{
return [externalMap objectForKey:symbolName];
}
@end
//============================================================================
@implementation MachOLayout (DyldInfo)
//-----------------------------------------------------------------------------
- (void)rebaseAddress:(uint64_t)address
type:(uint32_t)type
node:(MVNode *)node
location:(uint32_t)location
{
NSString * descStr = [NSString stringWithFormat:@"%@ 0x%qX %@",
[self is64bit] == NO ? [self findSectionContainsRVA:address] : [self findSectionContainsRVA64:address],
address,
type == REBASE_TYPE_POINTER ? @"Pointer" :
type == REBASE_TYPE_TEXT_ABSOLUTE32 ? @"Abs32 " :
type == REBASE_TYPE_TEXT_PCREL32 ? @"PCrel32" : @"???"];
[node.details appendRow:[NSString stringWithFormat:@"%.8X", location]
:@""
:descStr
:@""];
}
//-----------------------------------------------------------------------------
- (MVNode *)createRebaseNode:(MVNode *)parent
caption:(NSString *)caption
location:(uint32_t)location
length:(uint32_t)length
baseAddress:(uint64_t)baseAddress
{
MVNode * dataNode = [self createDataNode:parent
caption:caption
location:location
length:length];
MVNodeSaver nodeSaver;
MVNode * node = [dataNode insertChildWithDetails:@"Opcodes" location:location length:length saver:nodeSaver];
MVNodeSaver actionNodeSaver;
MVNode * actionNode = [dataNode insertChildWithDetails:@"Actions" location:location length:length saver:actionNodeSaver];
NSRange range = NSMakeRange(location,0);
NSString * lastReadHex;
BOOL isDone = NO;
uint64_t ptrSize = ([self is64bit] == NO ? sizeof(uint32_t) : sizeof(uint64_t));
uint64_t address = baseAddress;
uint32_t type = 0;
uint32_t doRebaseLocation = location;
while (NSMaxRange(range) < location + length && isDone == NO)
{
uint8_t byte = [self read_int8:range lastReadHex:&lastReadHex];
uint8_t opcode = byte & REBASE_OPCODE_MASK;
uint8_t immediate = byte & REBASE_IMMEDIATE_MASK;
switch (opcode)
{
case REBASE_OPCODE_DONE:
isDone = YES;
[node.details appendRow:[NSString stringWithFormat:@"%.8lX", range.location]
:lastReadHex
:@"REBASE_OPCODE_DONE"
:@""];
break;
case REBASE_OPCODE_SET_TYPE_IMM:
{
type = immediate;
NSString *typeString = [NSString alloc];
switch (type)
{
case REBASE_TYPE_POINTER:
typeString = [typeString initWithString:@"REBASE_TYPE_POINTER"];
break;
case REBASE_TYPE_TEXT_ABSOLUTE32:
typeString = [typeString initWithString:@"REBASE_TYPE_TEXT_ABSOLUTE32"];
break;
case REBASE_TYPE_TEXT_PCREL32:
typeString = [typeString initWithString:@"REBASE_TYPE_TEXT_PCREL32"];
break;
default:
typeString = [typeString initWithString:@"Unknown"];
}
[node.details appendRow:[NSString stringWithFormat:@"%.8lX", range.location]
:lastReadHex
:@"REBASE_OPCODE_SET_TYPE_IMM"
:[NSString stringWithFormat:@"type (%i, %@)", type, typeString]];
break;
}
case REBASE_OPCODE_SET_SEGMENT_AND_OFFSET_ULEB:
{
uint32_t segmentIndex = immediate;
[node.details appendRow:[NSString stringWithFormat:@"%.8lX", range.location]
:lastReadHex
:@"REBASE_OPCODE_SET_SEGMENT_AND_OFFSET_ULEB"
:[NSString stringWithFormat:@"segment (%u)", segmentIndex]];
uint64_t offset = [self read_uleb128:range lastReadHex:&lastReadHex];
[node.details appendRow:[NSString stringWithFormat:@"%.8lX", range.location]
:lastReadHex
:@"uleb128"
:[NSString stringWithFormat:@"offset (%qi)",offset]];
if (([self is64bit] == NO && segmentIndex >= segments.size()) ||
([self is64bit] == YES && segmentIndex >= segments_64.size()))
{
[NSException raise:@"Segment"
format:@"index is out of range %u", segmentIndex];
}
address = ([self is64bit] == NO ? segments.at(segmentIndex)->vmaddr
: segments_64.at(segmentIndex)->vmaddr) + offset;
} break;
case REBASE_OPCODE_ADD_ADDR_ULEB:
{
[node.details appendRow:[NSString stringWithFormat:@"%.8lX", range.location]
:lastReadHex
:@"REBASE_OPCODE_ADD_ADDR_ULEB"
:@""];
uint64_t offset = [self read_uleb128:range lastReadHex:&lastReadHex];
[node.details appendRow:[NSString stringWithFormat:@"%.8lX", range.location]
:lastReadHex
:@"uleb128"
:[NSString stringWithFormat:@"offset (%qi)",offset]];
address += offset;
} break;
case REBASE_OPCODE_ADD_ADDR_IMM_SCALED:
{
uint32_t scale = immediate;
[node.details appendRow:[NSString stringWithFormat:@"%.8lX", range.location]
:lastReadHex
:@"REBASE_OPCODE_ADD_ADDR_IMM_SCALED"
:[NSString stringWithFormat:@"scale (%u)",scale]];
address += scale * ptrSize;
} break;
case REBASE_OPCODE_DO_REBASE_IMM_TIMES:
{
uint32_t count = immediate;
[node.details appendRow:[NSString stringWithFormat:@"%.8lX", range.location]
:lastReadHex
:@"REBASE_OPCODE_DO_REBASE_IMM_TIMES"
:[NSString stringWithFormat:@"count (%u)",count]];
[node.details setAttributes:MVUnderlineAttributeName,@"YES",nil];
for (uint32_t index = 0; index < count; index++)
{
[self rebaseAddress:address type:type node:actionNode location:doRebaseLocation];
address += ptrSize;
}
doRebaseLocation = NSMaxRange(range);
} break;
case REBASE_OPCODE_DO_REBASE_ULEB_TIMES:
{
[node.details appendRow:[NSString stringWithFormat:@"%.8lX", range.location]
:lastReadHex
:@"REBASE_OPCODE_DO_REBASE_ULEB_TIMES"
:@""];
uint32_t startNextRebase = NSMaxRange(range);
uint64_t count = [self read_uleb128:range lastReadHex:&lastReadHex];
[node.details appendRow:[NSString stringWithFormat:@"%.8lX", range.location]
:lastReadHex
:@"uleb128"
:[NSString stringWithFormat:@"count (%qu)",count]];
[node.details setAttributes:MVUnderlineAttributeName,@"YES",nil];
for (uint64_t index = 0; index < count; index++)
{
[self rebaseAddress:address type:type node:actionNode location:doRebaseLocation];
address += ptrSize;
}
doRebaseLocation = startNextRebase;
} break;
case REBASE_OPCODE_DO_REBASE_ADD_ADDR_ULEB:
{
[node.details appendRow:[NSString stringWithFormat:@"%.8lX", range.location]
:lastReadHex
:@"REBASE_OPCODE_DO_REBASE_ADD_ADDR_ULEB"
:@""];
uint32_t startNextRebase = NSMaxRange(range);
uint64_t offset = [self read_uleb128:range lastReadHex:&lastReadHex];
[node.details appendRow:[NSString stringWithFormat:@"%.8lX", range.location]
:lastReadHex
:@"uleb128"
:[NSString stringWithFormat:@"offset (%qi)",offset]];
[node.details setAttributes:MVUnderlineAttributeName,@"YES",nil];
[self rebaseAddress:address type:type node:actionNode location:doRebaseLocation];
address += ptrSize + offset;
doRebaseLocation = startNextRebase;
} break;
case REBASE_OPCODE_DO_REBASE_ULEB_TIMES_SKIPPING_ULEB:
{
[node.details appendRow:[NSString stringWithFormat:@"%.8lX", range.location]
:lastReadHex
:@"REBASE_OPCODE_DO_REBASE_ULEB_TIMES_SKIPPING_ULEB"
:@""];
uint32_t startNextRebase = NSMaxRange(range);
uint64_t count = [self read_uleb128:range lastReadHex:&lastReadHex];
[node.details appendRow:[NSString stringWithFormat:@"%.8lX", range.location]
:lastReadHex
:@"uleb128"
:[NSString stringWithFormat:@"count (%qu)",count]];
uint64_t skip = [self read_uleb128:range lastReadHex:&lastReadHex];
[node.details appendRow:[NSString stringWithFormat:@"%.8lX", range.location]
:lastReadHex
:@"uleb128"
:[NSString stringWithFormat:@"skip (%qu)",skip]];
[node.details setAttributes:MVUnderlineAttributeName,@"YES",nil];
for (uint64_t index = 0; index < count; index++)
{
[self rebaseAddress:address type:type node:actionNode location:doRebaseLocation];
address += ptrSize + skip;
}
doRebaseLocation = startNextRebase;
} break;
default:
[NSException raise:@"Rebase info" format:@"Unknown opcode (%u %u)",
((uint32_t)-1 & opcode), ((uint32_t)-1 & immediate)];
}
}
return node;
}
//-----------------------------------------------------------------------------
//-----------------------------------------------------------------------------
//-----------------------------------------------------------------------------
//-----------------------------------------------------------------------------
- (void)bindAddress:(uint64_t)address
type:(uint32_t)type
symbolName:(NSString *)symbolName
flags:(uint32_t)flags
addend:(int64_t)addend
libraryOrdinal:(int32_t)libOrdinal
node:(MVNode *)node
nodeType:(BindNodeType)nodeType
location:(uint32_t)location
dyldHelper:(DyldHelper *)helper
ptrSize:(uint32_t)ptrSize
{
NSString * descStr = [NSString stringWithFormat:@"%@ 0x%qX",
[self is64bit] == NO ? [self findSectionContainsRVA:address] : [self findSectionContainsRVA64:address],
address];
if (nodeType != NodeTypeLazyBind)
{
descStr = [descStr stringByAppendingFormat:@" %@ addend:%qi",
type == BIND_TYPE_POINTER ? @"Pointer" :
type == BIND_TYPE_TEXT_ABSOLUTE32 ? @"Abs32 " :
type == BIND_TYPE_TEXT_PCREL32 ? @"PCrel32" : @"type:???",
addend];
}
if ((flags & BIND_SYMBOL_FLAGS_WEAK_IMPORT) != 0)
{
descStr = [descStr stringByAppendingString:@"[weak-ref]"];
}
if ((flags & BIND_SYMBOL_FLAGS_NON_WEAK_DEFINITION) != 0)
{
descStr = [descStr stringByAppendingString:@"[strong-def]"];
}
if (nodeType != NodeTypeWeakBind)
{
struct dylib const * dylib = [self getDylibByIndex:libOrdinal];
descStr = [descStr stringByAppendingFormat:@" (%@)",
libOrdinal == BIND_SPECIAL_DYLIB_SELF ? @"BIND_SPECIAL_DYLIB_SELF" :
libOrdinal == BIND_SPECIAL_DYLIB_MAIN_EXECUTABLE ? @"BIND_SPECIAL_DYLIB_MAIN_EXECUTABLE" :
libOrdinal == BIND_SPECIAL_DYLIB_FLAT_LOOKUP ? @"BIND_SPECIAL_DYLIB_FLAT_LOOKUP" :
(uint32_t)libOrdinal >= dylibs.size() ? @"???" :
[NSSTRING((uint8_t *)dylib + dylib->name.offset - sizeof(struct load_command)) lastPathComponent]];
}
[node.details appendRow:[NSString stringWithFormat:@"%.8X", location]
:@""
:descStr
:symbolName];
[node.details setAttributes:MVMetaDataAttributeName,symbolName,nil];
// preserve binding info for reloc pathcing
if ([self isDylibStub] == NO && nodeType == NodeTypeBind) // weak and lazy does not count
{
NSParameterAssert(type == BIND_TYPE_POINTER); // only this one is supported so far
NSNumber * symbolIndex = [helper indexForSymbol:symbolName];
if (symbolIndex != nil)
{
uint32_t relocLocation;
uint64_t relocValue;
if ([self is64bit] == NO)
{
relocLocation = [self RVAToFileOffset:(uint32_t)address];
relocValue = [symbolIndex longValue];
}
else
{
relocLocation = [self RVA64ToFileOffset:address];
relocValue = [symbolIndex longLongValue];
}
// update real data
relocValue += addend;
[dataController.realData replaceBytesInRange:NSMakeRange(relocLocation, ptrSize) withBytes:&relocValue];
/*
NSLog(@"%0xqX --> %0xqX",
([self is64bit] == NO ? [self fileOffsetToRVA:relocLocation] : [self fileOffsetToRVA64:relocLocation]),
relocValue);
*/
}
}
}
//-----------------------------------------------------------------------------
- (MVNode *)createBindingNode:(MVNode *)parent
caption:(NSString *)caption
location:(uint32_t)location
length:(uint32_t)length
baseAddress:(uint64_t)baseAddress
nodeType:(BindNodeType)nodeType
dyldHelper:(DyldHelper *)helper
{
MVNode * dataNode = [self createDataNode:parent
caption:caption
location:location
length:length];
MVNodeSaver nodeSaver;
MVNode * node = [dataNode insertChildWithDetails:@"Opcodes" location:location length:length saver:nodeSaver];
MVNodeSaver actionNodeSaver;
MVNode * actionNode = [dataNode insertChildWithDetails:@"Actions" location:location length:length saver:actionNodeSaver];
NSRange range = NSMakeRange(location,0);
NSString * lastReadHex;
//----------------------------
BOOL isDone = NO;
int32_t libOrdinal = 0;
uint32_t type = 0;
int64_t addend = 0;
NSString * symbolName = nil;
uint32_t symbolFlags = 0;
uint32_t doBindLocation = location;
uint64_t ptrSize = ([self is64bit] == NO ? sizeof(uint32_t) : sizeof(uint64_t));
uint64_t address = baseAddress;
while (NSMaxRange(range) < location + length && isDone == NO)
{
uint8_t byte = [self read_int8:range lastReadHex:&lastReadHex];
uint8_t opcode = byte & BIND_OPCODE_MASK;
uint8_t immediate = byte & BIND_IMMEDIATE_MASK;
switch (opcode)
{
case BIND_OPCODE_DONE:
[node.details appendRow:[NSString stringWithFormat:@"%.8lX", range.location]
:lastReadHex
:@"BIND_OPCODE_DONE"
:@""];
// The lazy bindings have one of these at the end of each bind.
if (nodeType != NodeTypeLazyBind)
{
isDone = YES;
}
doBindLocation = NSMaxRange(range);
break;
case BIND_OPCODE_SET_DYLIB_ORDINAL_IMM:
libOrdinal = immediate;
[node.details appendRow:[NSString stringWithFormat:@"%.8lX", range.location]
:lastReadHex
:@"BIND_OPCODE_SET_DYLIB_ORDINAL_IMM"
:[NSString stringWithFormat:@"dylib (%d)",libOrdinal]];
break;
case BIND_OPCODE_SET_DYLIB_ORDINAL_ULEB:
[node.details appendRow:[NSString stringWithFormat:@"%.8lX", range.location]
:lastReadHex
:@"BIND_OPCODE_SET_DYLIB_ORDINAL_ULEB"
:@""];
libOrdinal = [self read_uleb128:range lastReadHex:&lastReadHex];
[node.details appendRow:[NSString stringWithFormat:@"%.8lX", range.location]
:lastReadHex
:@"uleb128"
:[NSString stringWithFormat:@"dylib (%d)",libOrdinal]];
break;
case BIND_OPCODE_SET_DYLIB_SPECIAL_IMM:
{
// Special means negative
if (immediate == 0)
{
libOrdinal = 0;
}
else
{
int8_t signExtended = immediate | BIND_OPCODE_MASK; // This sign extends the value
libOrdinal = signExtended;
}
[node.details appendRow:[NSString stringWithFormat:@"%.8lX", range.location]
:lastReadHex
:@"BIND_OPCODE_SET_DYLIB_SPECIAL_IMM"
:[NSString stringWithFormat:@"dylib (%d)",libOrdinal]];
} break;
case BIND_OPCODE_SET_SYMBOL_TRAILING_FLAGS_IMM:
symbolFlags = immediate;
[node.details appendRow:[NSString stringWithFormat:@"%.8lX", range.location]
:lastReadHex
:@"BIND_OPCODE_SET_SYMBOL_TRAILING_FLAGS_IMM"
:[NSString stringWithFormat:@"flags (%u)",((uint32_t)-1 & symbolFlags)]];
symbolName = [self read_string:range lastReadHex:&lastReadHex];
[node.details appendRow:[NSString stringWithFormat:@"%.8lX", range.location]
:lastReadHex
:@"string"
:[NSString stringWithFormat:@"name (%@)",symbolName]];
break;
case BIND_OPCODE_SET_TYPE_IMM:
type = immediate;
[node.details appendRow:[NSString stringWithFormat:@"%.8lX", range.location]
:lastReadHex
:@"BIND_OPCODE_SET_TYPE_IMM"
:[NSString stringWithFormat:@"type (%@)",
type == BIND_TYPE_POINTER ? @"BIND_TYPE_POINTER" :
type == BIND_TYPE_TEXT_ABSOLUTE32 ? @"BIND_TYPE_TEXT_ABSOLUTE32" :
type == BIND_TYPE_TEXT_PCREL32 ? @"BIND_TYPE_TEXT_PCREL32" : @"???"]];
break;
case BIND_OPCODE_SET_ADDEND_SLEB:
[node.details appendRow:[NSString stringWithFormat:@"%.8lX", range.location]
:lastReadHex
:@"BIND_OPCODE_SET_ADDEND_SLEB"
:@""];
addend = [self read_sleb128:range lastReadHex:&lastReadHex];
[node.details appendRow:[NSString stringWithFormat:@"%.8lX", range.location]
:lastReadHex
:@"sleb128"
:[NSString stringWithFormat:@"addend (%qi)",addend]];
break;
case BIND_OPCODE_SET_SEGMENT_AND_OFFSET_ULEB:
{
uint32_t segmentIndex = immediate;
[node.details appendRow:[NSString stringWithFormat:@"%.8lX", range.location]
:lastReadHex
:@"BIND_OPCODE_SET_SEGMENT_AND_OFFSET_ULEB"
:[NSString stringWithFormat:@"segment (%u)",segmentIndex]];
uint64_t val = [self read_uleb128:range lastReadHex:&lastReadHex];
[node.details appendRow:[NSString stringWithFormat:@"%.8lX", range.location]
:lastReadHex
:@"uleb128"
:[NSString stringWithFormat:@"offset (%qi)",val]];
if (([self is64bit] == NO && segmentIndex >= segments.size()) ||
([self is64bit] == YES && segmentIndex >= segments_64.size()))
{
[NSException raise:@"Segment"
format:@"index is out of range %u", segmentIndex];
}
address = ([self is64bit] == NO ? segments.at(segmentIndex)->vmaddr
: segments_64.at(segmentIndex)->vmaddr) + val;
} break;
case BIND_OPCODE_ADD_ADDR_ULEB:
{
[node.details appendRow:[NSString stringWithFormat:@"%.8lX", range.location]
:lastReadHex
:@"BIND_OPCODE_ADD_ADDR_ULEB"
:@""];
uint64_t val = [self read_uleb128:range lastReadHex:&lastReadHex];
[node.details appendRow:[NSString stringWithFormat:@"%.8lX", range.location]
:lastReadHex
:@"uleb128"
:[NSString stringWithFormat:@"offset (%qi)",val]];
address += val;
} break;
case BIND_OPCODE_DO_BIND:
{
[node.details appendRow:[NSString stringWithFormat:@"%.8lX", range.location]
:lastReadHex
:@"BIND_OPCODE_DO_BIND"
:@""];
[node.details setAttributes:MVUnderlineAttributeName,@"YES",nil];
[self bindAddress:address
type:type
symbolName:symbolName
flags:symbolFlags
addend:addend
libraryOrdinal:libOrdinal
node:actionNode
nodeType:nodeType
location:doBindLocation
dyldHelper:helper
ptrSize:ptrSize];
doBindLocation = NSMaxRange(range);
address += ptrSize;
} break;
case BIND_OPCODE_DO_BIND_ADD_ADDR_ULEB:
{
[node.details appendRow:[NSString stringWithFormat:@"%.8lX", range.location]
:lastReadHex
:@"BIND_OPCODE_DO_BIND_ADD_ADDR_ULEB"
:@""];
uint32_t startNextBind = NSMaxRange(range);
uint64_t val = [self read_uleb128:range lastReadHex:&lastReadHex];
[node.details appendRow:[NSString stringWithFormat:@"%.8lX", range.location]
:lastReadHex
:@"uleb128"
:[NSString stringWithFormat:@"offset (%qi)",val]];
[node.details setAttributes:MVUnderlineAttributeName,@"YES",nil];
[self bindAddress:address
type:type
symbolName:symbolName
flags:symbolFlags
addend:addend
libraryOrdinal:libOrdinal
node:actionNode
nodeType:nodeType
location:doBindLocation
dyldHelper:helper
ptrSize:ptrSize];
doBindLocation = startNextBind;
address += ptrSize + val;
} break;
case BIND_OPCODE_DO_BIND_ADD_ADDR_IMM_SCALED:
{
uint32_t scale = immediate;
[node.details appendRow:[NSString stringWithFormat:@"%.8lX", range.location]
:lastReadHex
:@"BIND_OPCODE_DO_BIND_ADD_ADDR_IMM_SCALED"
:[NSString stringWithFormat:@"scale (%u)",scale]];
[node.details setAttributes:MVUnderlineAttributeName,@"YES",nil];
[self bindAddress:address
type:type
symbolName:symbolName
flags:symbolFlags
addend:addend
libraryOrdinal:libOrdinal
node:actionNode
nodeType:nodeType
location:doBindLocation
dyldHelper:helper
ptrSize:ptrSize];
doBindLocation = NSMaxRange(range);
address += ptrSize + scale * ptrSize;
} break;
case BIND_OPCODE_DO_BIND_ULEB_TIMES_SKIPPING_ULEB:
{
[node.details appendRow:[NSString stringWithFormat:@"%.8lX", range.location]
:lastReadHex
:@"BIND_OPCODE_DO_BIND_ULEB_TIMES_SKIPPING_ULEB"
:@""];
uint32_t startNextBind = NSMaxRange(range);
uint64_t count = [self read_uleb128:range lastReadHex:&lastReadHex];
[node.details appendRow:[NSString stringWithFormat:@"%.8lX", range.location]
:lastReadHex
:@"uleb128"
:[NSString stringWithFormat:@"count (%qu)",count]];
uint64_t skip = [self read_uleb128:range lastReadHex:&lastReadHex];
[node.details appendRow:[NSString stringWithFormat:@"%.8lX", range.location]
:lastReadHex
:@"uleb128"
:[NSString stringWithFormat:@"skip (%qu)",skip]];
[node.details setAttributes:MVUnderlineAttributeName,@"YES",nil];
for (uint64_t index = 0; index < count; index++)
{
[self bindAddress:address
type:type
symbolName:symbolName
flags:symbolFlags
addend:addend
libraryOrdinal:libOrdinal
node:actionNode
nodeType:nodeType
location:doBindLocation
dyldHelper:helper
ptrSize:ptrSize];
doBindLocation = startNextBind;
address += ptrSize + skip;
}
} break;
default:
[NSException raise:@"Bind info" format:@"Unknown opcode (%u %u)",
((uint32_t)-1 & opcode), ((uint32_t)-1 & immediate)];
}
}
return node;
}
//-----------------------------------------------------------------------------
- (void)exportSymbol:(uint64_t)address
symbolName:(NSString *)symbolName
flags:(uint64_t)flags
node:(MVNode *)node
location:(uint32_t)location
{
//uint64_t address = [self is64bit] == NO ? [self fileOffsetToRVA:offset] : [self fileOffsetToRVA64:offset];
NSString * descStr = [NSString stringWithFormat:@"%@ 0x%qX",
[self is64bit] == NO ? [self findSectionContainsRVA:address] : [self findSectionContainsRVA64:address],
address];
if ((flags & EXPORT_SYMBOL_FLAGS_KIND_MASK) == EXPORT_SYMBOL_FLAGS_KIND_THREAD_LOCAL)
{
descStr = [descStr stringByAppendingString:@" [thread-local]"];
}
if (flags & EXPORT_SYMBOL_FLAGS_WEAK_DEFINITION)
{
descStr = [descStr stringByAppendingString:@" [weak-def]"];
}
if (flags & EXPORT_SYMBOL_FLAGS_REEXPORT)
{
descStr = [descStr stringByAppendingString:@" [reexport]"];
}
if (flags & EXPORT_SYMBOL_FLAGS_STUB_AND_RESOLVER)
{
descStr = [descStr stringByAppendingString:@" [stub & resolver]"];
}
[node.details insertRowWithOffset:location
:[NSString stringWithFormat:@"%.8X", location]
:@""
:descStr
:symbolName];
[node.details setAttributes:MVMetaDataAttributeName,symbolName,nil];
}
//-----------------------------------------------------------------------------
- (void)printSymbols:(NSString *)prefix
location:(uint32_t)location
skipBytes:(uint32_t)skip
node:(MVNode *)node
actionNode:(MVNode *)actionNode
baseAddress:(uint64_t)baseAddress
exportLocation:(uint32_t &)exportLocation
{
NSRange range = NSMakeRange(location + skip,0);
NSString * lastReadHex;
uint8_t terminalSize = [self read_uint8:range lastReadHex:&lastReadHex];
[node.details insertRowWithOffset:range.location
:[NSString stringWithFormat:@"%.8lX", range.location]
:lastReadHex
:@"Terminal Size"
:[NSString stringWithFormat:@"%u",((uint32_t)-1 & terminalSize)]];
if (terminalSize != 0)
{
uint32_t terminalLocation = NSMaxRange(range);
uint64_t flags = [self read_uleb128:range lastReadHex:&lastReadHex];
[node.details insertRowWithOffset:range.location
:[NSString stringWithFormat:@"%.8lX", range.location]
:lastReadHex
:@"Flags"
:@""];
if ((flags & EXPORT_SYMBOL_FLAGS_KIND_MASK) == EXPORT_SYMBOL_FLAGS_KIND_REGULAR) [node.details insertRowWithOffset:range.location:@"":@"":@"00":@"EXPORT_SYMBOL_FLAGS_KIND_REGULAR"];
if ((flags & EXPORT_SYMBOL_FLAGS_KIND_MASK) == EXPORT_SYMBOL_FLAGS_KIND_THREAD_LOCAL) [node.details insertRowWithOffset:range.location:@"":@"":@"01":@"EXPORT_SYMBOL_FLAGS_KIND_THREAD_LOCAL"];
if (flags & EXPORT_SYMBOL_FLAGS_WEAK_DEFINITION) [node.details insertRowWithOffset:range.location:@"":@"":@"04":@"EXPORT_SYMBOL_FLAGS_WEAK_DEFINITION"];
if (flags & EXPORT_SYMBOL_FLAGS_REEXPORT) [node.details insertRowWithOffset:range.location:@"":@"":@"08":@"EXPORT_SYMBOL_FLAGS_REEXPORT"];
if (flags & EXPORT_SYMBOL_FLAGS_STUB_AND_RESOLVER) [node.details insertRowWithOffset:range.location:@"":@"":@"10":@"EXPORT_SYMBOL_FLAGS_STUB_AND_RESOLVER"];
uint64_t offset = [self read_uleb128:range lastReadHex:&lastReadHex];
[node.details insertRowWithOffset:range.location
:[NSString stringWithFormat:@"%.8lX", range.location]
:lastReadHex
:@"Symbol Offset"
:[NSString stringWithFormat:@"0x%qX",offset]];
//=================================================================
[self exportSymbol:baseAddress + offset
symbolName:prefix
flags:flags
node:actionNode
location:exportLocation];
//=================================================================
range = NSMakeRange(terminalLocation, terminalSize);
}
uint8_t childCount = [self read_uint8:range lastReadHex:&lastReadHex];
[node.details insertRowWithOffset:range.location
:[NSString stringWithFormat:@"%.8lX", range.location]
:lastReadHex
:@"Child Count"
:[NSString stringWithFormat:@"%u",((uint32_t)-1 & childCount)]];
if (childCount == 0)
{
// separate export nodes
[node.details setAttributes:MVUnderlineAttributeName,@"YES",nil];
}
while (childCount-- > 0)
{
exportLocation = NSMaxRange(range);
NSString * label = [self read_string:range lastReadHex:&lastReadHex];
[node.details insertRowWithOffset:range.location
:[NSString stringWithFormat:@"%.8lX", range.location]
:lastReadHex
:@"Node Label"
:[NSString stringWithFormat:@"\"%@\"",label]];
uint64_t skip = [self read_uleb128:range lastReadHex:&lastReadHex];
[node.details insertRowWithOffset:range.location
:[NSString stringWithFormat:@"%.8lX", range.location]
:lastReadHex
:@"Next Node"
:[self is64bit] == NO
? [NSString stringWithFormat:@"0x%X",[self fileOffsetToRVA:location + skip]]
: [NSString stringWithFormat:@"0x%qX",[self fileOffsetToRVA64:location + skip]]];
if (childCount == 0)
{
// separate export nodes
[node.details setAttributes:MVUnderlineAttributeName,@"YES",nil];
}
[self printSymbols:[NSString stringWithFormat:@"%@%@", prefix, label]
location:location
skipBytes:skip
node:node
actionNode:actionNode
baseAddress:baseAddress
exportLocation:exportLocation];
}
}
//-----------------------------------------------------------------------------
- (MVNode *)createExportNode:(MVNode *)parent
caption:(NSString *)caption
location:(uint32_t)location
length:(uint32_t)length
baseAddress:(uint64_t)baseAddress
{
MVNode * dataNode = [self createDataNode:parent
caption:caption
location:location
length:length];
MVNodeSaver nodeSaver;
MVNode * node = [dataNode insertChildWithDetails:@"Opcodes" location:location length:length saver:nodeSaver];
MVNodeSaver actionNodeSaver;
MVNode * actionNode = [dataNode insertChildWithDetails:@"Actions" location:location length:length saver:actionNodeSaver];
uint32_t exportLocation = location;
// start to traverse with initial values
[self printSymbols:@""
location:location
skipBytes:0
node:node
actionNode:actionNode
baseAddress:baseAddress
exportLocation:exportLocation];
// line up the details of traversal
[node sortDetails];
[actionNode sortDetails];
return node;
}
//-----------------------------------------------------------------------------
@end