459ab3484e
Monotone-Revision: 93bb2c6945d08d009e60e0b6280976b86b0b0aaf Monotone-Author: wsourdeau@inverse.ca Monotone-Date: 2009-06-03T23:06:52 Monotone-Branch: ca.inverse.sogo
888 lines
21 KiB
Objective-C
888 lines
21 KiB
Objective-C
/** NSException - Object encapsulation of a general exception handler
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Copyright (C) 1993, 1994, 1996, 1997, 1999 Free Software Foundation, Inc.
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Written by: Adam Fedor <fedor@boulder.colorado.edu>
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Date: Mar 1995
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This file is part of the GNUstep Base Library.
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 3 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this library; if not, write to the Free
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Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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Boston, MA 02111 USA.
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$Date: 2007-09-14 07:36:11 -0400 (Fri, 14 Sep 2007) $ $Revision: 25482 $
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NOTE: This code was taken from GNUstep Base Library and sligthly modified
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by Ludovic Marcotte <ludovic@inverse.ca>
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*/
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#include <bfd.h>
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#include <dlfcn.h>
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#include <signal.h>
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typedef void* dl_handle_t;
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typedef void* dl_symbol_t;
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#import "NSException+Stacktrace.h"
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#import <Foundation/NSArray.h>
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#import <Foundation/NSBundle.h>
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#import <Foundation/NSData.h>
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#import <Foundation/NSLock.h>
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#import <Foundation/NSNull.h>
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#import <Foundation/NSProcessInfo.h>
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#import <Foundation/NSThread.h>
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// #if GNUSTEP_BASE_MAJOR_VERSION >= 1
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// #if GNUSTEP_BASE_MINOR_VERSION > 13
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//
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//
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//
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static void _terminate()
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{
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abort();
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}
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static void
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_NSFoundationUncaughtExceptionHandler (NSException *exception)
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{
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NSString *stack;
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fprintf(stderr, "Uncaught exception %s, reason: %s\n",
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[[exception name] lossyCString], [[exception reason] lossyCString]);
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fflush(stderr); /* NEEDED UNDER MINGW */
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stack = [[[exception userInfo] objectForKey: @"GSStackTraceKey"] description];
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if (stack != nil)
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{
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fprintf(stderr, "Stack\n%s\n", [stack lossyCString]);
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}
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fflush(stderr); /* NEEDED UNDER MINGW */
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_terminate();
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}
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//
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//
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//
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// #define STACKSYMBOLS 1
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@interface GSStackTrace : NSObject
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{
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NSMutableArray *frames;
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}
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+ (GSStackTrace*) currentStack;
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- (NSString*) description;
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- (NSEnumerator*) enumerator;
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- (id) frameAt: (unsigned)index;
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- (unsigned) frameCount;
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- (NSEnumerator*) reverseEnumerator;
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@end
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// #ifdef STACKSYMBOLS
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// GSStackTrace inspired by FYStackTrace.m
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// created by Wim Oudshoorn on Mon 11-Apr-2006
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// reworked by Lloyd Dupont @ NovaMind.com on 4-May-2006
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@class GSBinaryFileInfo;
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@interface GSFunctionInfo : NSObject
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{
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void *_address;
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NSString *_fileName;
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NSString *_functionName;
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int _lineNo;
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GSBinaryFileInfo *_module;
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}
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- (void*) address;
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- (NSString *) fileName;
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- (NSString *) function;
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- (id) initWithModule: (GSBinaryFileInfo*)module
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address: (void*)address
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file: (NSString*)file
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function: (NSString*)function
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line: (int)lineNo;
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- (int) lineNumber;
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- (GSBinaryFileInfo*) module;
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@end
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@interface GSBinaryFileInfo : NSObject
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{
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NSString *_fileName;
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bfd *_abfd;
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asymbol **_symbols;
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long _symbolCount;
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}
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- (NSString *) fileName;
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- (GSFunctionInfo *) functionForAddress: (void*) address;
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- (id) initWithBinaryFile: (NSString *)fileName;
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- (id) init; // return info for the current executing process
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@end
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@implementation GSFunctionInfo
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- (void*) address
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{
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return _address;
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}
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- (oneway void) dealloc
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{
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[_module release];
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_module = nil;
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[_fileName release];
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_fileName = nil;
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[_functionName release];
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_functionName = nil;
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[super dealloc];
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}
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- (NSString *) description
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{
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return [NSString stringWithFormat: @"(%@: %p) %@ %@: %d",
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[_module fileName], _address, _functionName, _fileName, _lineNo];
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}
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- (NSString *) fileName
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{
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return _fileName;
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}
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- (NSString *) function
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{
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return _functionName;
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}
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- (id) init
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{
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[self release];
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return nil;
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}
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- (id) initWithModule: (GSBinaryFileInfo*)module
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address: (void*)address
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file: (NSString*)file
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function: (NSString*)function
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line: (int)lineNo
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{
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_module = [module retain];
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_address = address;
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_fileName = [file retain];
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_functionName = [function retain];
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_lineNo = lineNo;
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return self;
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}
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- (int) lineNumber
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{
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return _lineNo;
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}
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- (GSBinaryFileInfo *) module
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{
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return _module;
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}
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@end
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@implementation GSBinaryFileInfo
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+ (GSBinaryFileInfo*) infoWithBinaryFile: (NSString *)fileName
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{
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return [[[self alloc] initWithBinaryFile: fileName] autorelease];
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}
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+ (void) initialize
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{
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static BOOL first = YES;
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if (first == NO)
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{
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return;
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}
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first = NO;
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bfd_init ();
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}
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- (oneway void) dealloc
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{
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[_fileName release];
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_fileName = nil;
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if (_abfd)
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{
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bfd_close (_abfd);
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_abfd = NULL;
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}
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if (_symbols)
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{
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NSZoneFree (NULL, _symbols);
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_symbols = NULL;
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}
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[super dealloc];
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}
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- (NSString *) fileName
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{
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return _fileName;
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}
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- (id) init
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{
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NSString *processName;
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processName = [[[NSProcessInfo processInfo] arguments] objectAtIndex: 0];
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return [self initWithBinaryFile: processName];
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}
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- (id) initWithBinaryFile: (NSString *)fileName
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{
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int neededSpace;
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// 1st initialize the bfd
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if ([fileName length] == 0)
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{
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//NSLog (@"GSBinaryFileInfo: No File");
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[self release];
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return nil;
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}
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_fileName = [fileName copy];
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_abfd = bfd_openr ([fileName cString], NULL);
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if (!_abfd)
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{
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//NSLog (@"GSBinaryFileInfo: No Binary Info");
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[self release];
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return nil;
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}
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if (!bfd_check_format_matches (_abfd, bfd_object, NULL))
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{
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//NSLog (@"GSBinaryFileInfo: BFD format object error");
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[self release];
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return nil;
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}
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// second read the symbols from it
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if (!(bfd_get_file_flags (_abfd) & HAS_SYMS))
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{
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//NSLog (@"GSBinaryFileInfo: BFD does not contain any symbols");
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[self release];
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return nil;
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}
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neededSpace = bfd_get_symtab_upper_bound (_abfd);
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if (neededSpace < 0)
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{
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//NSLog (@"GSBinaryFileInfo: BFD error while deducing needed space");
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[self release];
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return nil;
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}
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if (neededSpace == 0)
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{
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//NSLog (@"GSBinaryFileInfo: BFD no space for symbols needed");
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[self release];
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return nil;
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}
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_symbols = NSZoneMalloc (NULL, neededSpace);
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if (!_symbols)
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{
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//NSLog (@"GSBinaryFileInfo: Can't allocate buffer");
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[self release];
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return nil;
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}
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_symbolCount = bfd_canonicalize_symtab (_abfd, _symbols);
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if (_symbolCount < 0)
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{
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//NSLog (@"GSBinaryFileInfo: BFD error while reading symbols");
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[self release];
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return nil;
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}
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return self;
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}
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struct SearchAddressStruct
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{
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void *theAddress;
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GSBinaryFileInfo *module;
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asymbol **symbols;
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GSFunctionInfo *theInfo;
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};
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static void find_address (bfd *abfd, asection *section,
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struct SearchAddressStruct *info)
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{
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bfd_vma address;
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bfd_vma vma;
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unsigned size;
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const char *fileName;
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const char *functionName;
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unsigned line = 0;
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if (info->theInfo)
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{
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return;
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}
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if (!(bfd_get_section_flags (abfd, section) & SEC_ALLOC))
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{
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return;
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}
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address = (bfd_vma) (intptr_t)info->theAddress;
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vma = bfd_get_section_vma (abfd, section);
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#if defined(bfd_get_section_size)
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size = bfd_get_section_size (section); // recent
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#else
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size = bfd_section_size (abfd, section); // older version
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#endif
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if (address < vma || address >= vma + size)
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{
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return;
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}
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if (bfd_find_nearest_line (abfd, section, info->symbols,
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address - vma, &fileName, &functionName, &line))
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{
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GSFunctionInfo *fi;
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NSString *file = nil;
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NSString *func = nil;
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if (fileName != 0)
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{
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file = [NSString stringWithCString: fileName
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encoding: [NSString defaultCStringEncoding]];
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}
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if (functionName != 0)
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{
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func = [NSString stringWithCString: functionName
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encoding: [NSString defaultCStringEncoding]];
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}
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fi = [GSFunctionInfo alloc];
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fi = [fi initWithModule: info->module
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address: info->theAddress
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file: file
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function: func
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line: line];
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[fi autorelease];
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info->theInfo = fi;
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}
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}
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- (GSFunctionInfo *) functionForAddress: (void*) address
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{
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struct SearchAddressStruct searchInfo = { address, self, _symbols, nil };
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bfd_map_over_sections (_abfd,
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(void (*) (bfd *, asection *, void *)) find_address, &searchInfo);
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return searchInfo.theInfo;
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}
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@end
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static NSRecursiveLock *modLock = nil;
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static NSMutableDictionary *stackModules = nil;
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// initialize stack trace info
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static id
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GSLoadModule(NSString *fileName)
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{
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GSBinaryFileInfo *module = nil;
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[modLock lock];
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if (stackModules == nil)
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{
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NSEnumerator *enumerator;
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NSBundle *bundle;
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stackModules = [NSMutableDictionary new];
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/*
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* Try to ensure we have the main, base and gui library bundles.
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*/
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[NSBundle mainBundle];
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[NSBundle bundleForClass: [NSObject class]];
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[NSBundle bundleForClass: NSClassFromString(@"NSView")];
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/*
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* Add file info for all bundles with code.
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*/
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enumerator = [[NSBundle allBundles] objectEnumerator];
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while ((bundle = [enumerator nextObject]) != nil)
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{
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if ([bundle load] == YES)
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{
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GSLoadModule([bundle executablePath]);
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}
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}
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}
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if ([fileName length] > 0)
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{
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module = [stackModules objectForKey: fileName];
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if (module == nil);
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{
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module = [GSBinaryFileInfo infoWithBinaryFile: fileName];
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if (module == nil)
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{
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module = (id)[NSNull null];
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}
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if ([stackModules objectForKey: fileName] == nil)
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{
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[stackModules setObject: module forKey: fileName];
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}
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else
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{
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module = [stackModules objectForKey: fileName];
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}
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}
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}
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[modLock unlock];
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if (module == (id)[NSNull null])
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{
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module = nil;
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}
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return module;
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}
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// #endif /* STACKSYMBOLS */
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//
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//
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//
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@implementation NSException (SOGoExtensions)
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- (void) raise
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{
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#ifndef _NATIVE_OBJC_EXCEPTIONS
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NSThread *thread;
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NSHandler *handler;
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#endif
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if ([_e_info objectForKey: @"GSStackTraceKey"] == nil)
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{
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NSMutableDictionary *m;
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if (_e_info == nil)
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{
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_e_info = m = [NSMutableDictionary new];
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}
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else if ([_e_info isKindOfClass: [NSMutableDictionary class]] == YES)
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{
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m = (NSMutableDictionary*)_e_info;
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}
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else
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{
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m = [_e_info mutableCopy];
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RELEASE(_e_info);
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_e_info = m;
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}
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[m setObject: [GSStackTrace currentStack] forKey: @"GSStackTraceKey"];
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}
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#ifdef _NATIVE_OBJC_EXCEPTIONS
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@throw self;
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#else
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thread = GSCurrentThread();
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handler = thread->_exception_handler;
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if (handler == NULL)
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{
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static int recursion = 0;
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/*
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* Set/check a counter to prevent recursive uncaught exceptions.
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* Allow a little recursion in case we have different handlers
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* being tried.
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*/
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if (recursion++ > 3)
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{
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fprintf(stderr,
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"recursion encountered handling uncaught exception\n");
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fflush(stderr); /* NEEDED UNDER MINGW */
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_terminate();
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}
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/*
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* Call the uncaught exception handler (if there is one).
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*/
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if (_NSUncaughtExceptionHandler != NULL)
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{
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(*_NSUncaughtExceptionHandler)(self);
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}
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/*
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* The uncaught exception handler which is set has not
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* exited, so we call the builtin handler, (undocumented
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* behavior of MacOS-X).
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* The standard handler is guaranteed to exit/abort.
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*/
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_NSFoundationUncaughtExceptionHandler(self);
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}
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thread->_exception_handler = handler->next;
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handler->exception = self;
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longjmp(handler->jumpState, 1);
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#endif
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}
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@end
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static jmp_buf *
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jbuf()
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{
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NSMutableData *d;
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d = [[[NSThread currentThread] threadDictionary] objectForKey: @"GSjbuf"];
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if (d == nil)
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{
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d = [[NSMutableData alloc] initWithLength:
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sizeof(jmp_buf) + sizeof(void(*)(int))];
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[[[NSThread currentThread] threadDictionary] setObject: d
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forKey: @"GSjbuf"];
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RELEASE(d);
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}
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return (jmp_buf*)[d mutableBytes];
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}
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static void
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recover(int sig)
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{
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jmp_buf *env = jbuf();
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longjmp(*env, 1);
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}
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#define _NS_FRAME_HACK(a) case a: val = __builtin_frame_address(a + 1); break;
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#define _NS_RETURN_HACK(a) case a: val = __builtin_return_address(a + 1); break;
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static void *
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NSFrameAddress(int offset)
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{
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jmp_buf *env;
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void (*old)(int);
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void *val;
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env = jbuf();
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if (setjmp(*env) == 0)
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{
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old = signal(SIGSEGV, recover);
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memcpy(env + 1, &old, sizeof(old));
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switch (offset)
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{
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_NS_FRAME_HACK(0); _NS_FRAME_HACK(1); _NS_FRAME_HACK(2);
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_NS_FRAME_HACK(3); _NS_FRAME_HACK(4); _NS_FRAME_HACK(5);
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_NS_FRAME_HACK(6); _NS_FRAME_HACK(7); _NS_FRAME_HACK(8);
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_NS_FRAME_HACK(9); _NS_FRAME_HACK(10); _NS_FRAME_HACK(11);
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_NS_FRAME_HACK(12); _NS_FRAME_HACK(13); _NS_FRAME_HACK(14);
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|
_NS_FRAME_HACK(15); _NS_FRAME_HACK(16); _NS_FRAME_HACK(17);
|
|
_NS_FRAME_HACK(18); _NS_FRAME_HACK(19); _NS_FRAME_HACK(20);
|
|
_NS_FRAME_HACK(21); _NS_FRAME_HACK(22); _NS_FRAME_HACK(23);
|
|
_NS_FRAME_HACK(24); _NS_FRAME_HACK(25); _NS_FRAME_HACK(26);
|
|
_NS_FRAME_HACK(27); _NS_FRAME_HACK(28); _NS_FRAME_HACK(29);
|
|
_NS_FRAME_HACK(30); _NS_FRAME_HACK(31); _NS_FRAME_HACK(32);
|
|
_NS_FRAME_HACK(33); _NS_FRAME_HACK(34); _NS_FRAME_HACK(35);
|
|
_NS_FRAME_HACK(36); _NS_FRAME_HACK(37); _NS_FRAME_HACK(38);
|
|
_NS_FRAME_HACK(39); _NS_FRAME_HACK(40); _NS_FRAME_HACK(41);
|
|
_NS_FRAME_HACK(42); _NS_FRAME_HACK(43); _NS_FRAME_HACK(44);
|
|
_NS_FRAME_HACK(45); _NS_FRAME_HACK(46); _NS_FRAME_HACK(47);
|
|
_NS_FRAME_HACK(48); _NS_FRAME_HACK(49); _NS_FRAME_HACK(50);
|
|
_NS_FRAME_HACK(51); _NS_FRAME_HACK(52); _NS_FRAME_HACK(53);
|
|
_NS_FRAME_HACK(54); _NS_FRAME_HACK(55); _NS_FRAME_HACK(56);
|
|
_NS_FRAME_HACK(57); _NS_FRAME_HACK(58); _NS_FRAME_HACK(59);
|
|
_NS_FRAME_HACK(60); _NS_FRAME_HACK(61); _NS_FRAME_HACK(62);
|
|
_NS_FRAME_HACK(63); _NS_FRAME_HACK(64); _NS_FRAME_HACK(65);
|
|
_NS_FRAME_HACK(66); _NS_FRAME_HACK(67); _NS_FRAME_HACK(68);
|
|
_NS_FRAME_HACK(69); _NS_FRAME_HACK(70); _NS_FRAME_HACK(71);
|
|
_NS_FRAME_HACK(72); _NS_FRAME_HACK(73); _NS_FRAME_HACK(74);
|
|
_NS_FRAME_HACK(75); _NS_FRAME_HACK(76); _NS_FRAME_HACK(77);
|
|
_NS_FRAME_HACK(78); _NS_FRAME_HACK(79); _NS_FRAME_HACK(80);
|
|
_NS_FRAME_HACK(81); _NS_FRAME_HACK(82); _NS_FRAME_HACK(83);
|
|
_NS_FRAME_HACK(84); _NS_FRAME_HACK(85); _NS_FRAME_HACK(86);
|
|
_NS_FRAME_HACK(87); _NS_FRAME_HACK(88); _NS_FRAME_HACK(89);
|
|
_NS_FRAME_HACK(90); _NS_FRAME_HACK(91); _NS_FRAME_HACK(92);
|
|
_NS_FRAME_HACK(93); _NS_FRAME_HACK(94); _NS_FRAME_HACK(95);
|
|
_NS_FRAME_HACK(96); _NS_FRAME_HACK(97); _NS_FRAME_HACK(98);
|
|
_NS_FRAME_HACK(99);
|
|
default: val = NULL; break;
|
|
}
|
|
signal(SIGSEGV, old);
|
|
}
|
|
else
|
|
{
|
|
env = jbuf();
|
|
memcpy(&old, env + 1, sizeof(old));
|
|
signal(SIGSEGV, old);
|
|
val = NULL;
|
|
}
|
|
return val;
|
|
}
|
|
|
|
static void *
|
|
NSReturnAddress(int offset)
|
|
{
|
|
jmp_buf *env;
|
|
void (*old)(int);
|
|
void *val;
|
|
|
|
env = jbuf();
|
|
if (setjmp(*env) == 0)
|
|
{
|
|
old = signal(SIGSEGV, recover);
|
|
memcpy(env + 1, &old, sizeof(old));
|
|
switch (offset)
|
|
{
|
|
_NS_RETURN_HACK(0); _NS_RETURN_HACK(1); _NS_RETURN_HACK(2);
|
|
_NS_RETURN_HACK(3); _NS_RETURN_HACK(4); _NS_RETURN_HACK(5);
|
|
_NS_RETURN_HACK(6); _NS_RETURN_HACK(7); _NS_RETURN_HACK(8);
|
|
_NS_RETURN_HACK(9); _NS_RETURN_HACK(10); _NS_RETURN_HACK(11);
|
|
_NS_RETURN_HACK(12); _NS_RETURN_HACK(13); _NS_RETURN_HACK(14);
|
|
_NS_RETURN_HACK(15); _NS_RETURN_HACK(16); _NS_RETURN_HACK(17);
|
|
_NS_RETURN_HACK(18); _NS_RETURN_HACK(19); _NS_RETURN_HACK(20);
|
|
_NS_RETURN_HACK(21); _NS_RETURN_HACK(22); _NS_RETURN_HACK(23);
|
|
_NS_RETURN_HACK(24); _NS_RETURN_HACK(25); _NS_RETURN_HACK(26);
|
|
_NS_RETURN_HACK(27); _NS_RETURN_HACK(28); _NS_RETURN_HACK(29);
|
|
_NS_RETURN_HACK(30); _NS_RETURN_HACK(31); _NS_RETURN_HACK(32);
|
|
_NS_RETURN_HACK(33); _NS_RETURN_HACK(34); _NS_RETURN_HACK(35);
|
|
_NS_RETURN_HACK(36); _NS_RETURN_HACK(37); _NS_RETURN_HACK(38);
|
|
_NS_RETURN_HACK(39); _NS_RETURN_HACK(40); _NS_RETURN_HACK(41);
|
|
_NS_RETURN_HACK(42); _NS_RETURN_HACK(43); _NS_RETURN_HACK(44);
|
|
_NS_RETURN_HACK(45); _NS_RETURN_HACK(46); _NS_RETURN_HACK(47);
|
|
_NS_RETURN_HACK(48); _NS_RETURN_HACK(49); _NS_RETURN_HACK(50);
|
|
_NS_RETURN_HACK(51); _NS_RETURN_HACK(52); _NS_RETURN_HACK(53);
|
|
_NS_RETURN_HACK(54); _NS_RETURN_HACK(55); _NS_RETURN_HACK(56);
|
|
_NS_RETURN_HACK(57); _NS_RETURN_HACK(58); _NS_RETURN_HACK(59);
|
|
_NS_RETURN_HACK(60); _NS_RETURN_HACK(61); _NS_RETURN_HACK(62);
|
|
_NS_RETURN_HACK(63); _NS_RETURN_HACK(64); _NS_RETURN_HACK(65);
|
|
_NS_RETURN_HACK(66); _NS_RETURN_HACK(67); _NS_RETURN_HACK(68);
|
|
_NS_RETURN_HACK(69); _NS_RETURN_HACK(70); _NS_RETURN_HACK(71);
|
|
_NS_RETURN_HACK(72); _NS_RETURN_HACK(73); _NS_RETURN_HACK(74);
|
|
_NS_RETURN_HACK(75); _NS_RETURN_HACK(76); _NS_RETURN_HACK(77);
|
|
_NS_RETURN_HACK(78); _NS_RETURN_HACK(79); _NS_RETURN_HACK(80);
|
|
_NS_RETURN_HACK(81); _NS_RETURN_HACK(82); _NS_RETURN_HACK(83);
|
|
_NS_RETURN_HACK(84); _NS_RETURN_HACK(85); _NS_RETURN_HACK(86);
|
|
_NS_RETURN_HACK(87); _NS_RETURN_HACK(88); _NS_RETURN_HACK(89);
|
|
_NS_RETURN_HACK(90); _NS_RETURN_HACK(91); _NS_RETURN_HACK(92);
|
|
_NS_RETURN_HACK(93); _NS_RETURN_HACK(94); _NS_RETURN_HACK(95);
|
|
_NS_RETURN_HACK(96); _NS_RETURN_HACK(97); _NS_RETURN_HACK(98);
|
|
_NS_RETURN_HACK(99);
|
|
default: val = NULL; break;
|
|
}
|
|
signal(SIGSEGV, old);
|
|
}
|
|
else
|
|
{
|
|
env = jbuf();
|
|
memcpy(&old, env + 1, sizeof(old));
|
|
signal(SIGSEGV, old);
|
|
val = NULL;
|
|
}
|
|
|
|
return val;
|
|
}
|
|
|
|
static unsigned NSCountFrames(void)
|
|
{
|
|
unsigned x = 0;
|
|
|
|
while (NSFrameAddress(x + 1)) x++;
|
|
|
|
return x;
|
|
}
|
|
|
|
|
|
static void *
|
|
__objc_dynamic_get_symbol_path(dl_handle_t handle, dl_symbol_t symbol)
|
|
{
|
|
dl_symbol_t sym;
|
|
Dl_info info;
|
|
|
|
if (handle == 0)
|
|
handle = RTLD_DEFAULT;
|
|
|
|
sym = dlsym(handle, symbol);
|
|
|
|
if (!sym)
|
|
return NULL;
|
|
|
|
if (!dladdr(sym, &info))
|
|
return NULL;
|
|
|
|
return (void *) info.dli_fname;
|
|
}
|
|
|
|
static NSArray*
|
|
GSListModules()
|
|
{
|
|
NSArray *result;
|
|
|
|
GSLoadModule(nil); // initialise
|
|
[modLock lock];
|
|
result = [stackModules allValues];
|
|
[modLock unlock];
|
|
return result;
|
|
}
|
|
|
|
@implementation GSStackTrace : NSObject
|
|
|
|
+ (GSStackTrace*) currentStack
|
|
{
|
|
return [[GSStackTrace new] autorelease];
|
|
}
|
|
|
|
- (oneway void) dealloc
|
|
{
|
|
[frames release];
|
|
[super dealloc];
|
|
}
|
|
|
|
- (NSString*) description
|
|
{
|
|
NSMutableString *result = [NSMutableString string];
|
|
int i;
|
|
int n;
|
|
|
|
n = [frames count];
|
|
for (i = 0; i < n; i++)
|
|
{
|
|
id line = [frames objectAtIndex: i];
|
|
|
|
[result appendFormat: @"%3d: %@\n", i, line];
|
|
}
|
|
return result;
|
|
}
|
|
|
|
- (NSEnumerator*) enumerator
|
|
{
|
|
return [frames objectEnumerator];
|
|
}
|
|
|
|
- (id) frameAt: (unsigned)index
|
|
{
|
|
return [frames objectAtIndex: index];
|
|
}
|
|
|
|
- (unsigned) frameCount
|
|
{
|
|
return [frames count];
|
|
}
|
|
|
|
// grab the current stack
|
|
- (id) init
|
|
{
|
|
// #if defined(STACKSYMBOLS)
|
|
int i;
|
|
int n;
|
|
|
|
frames = [NSMutableArray new];
|
|
n = NSCountFrames();
|
|
|
|
for (i = 0; i < n; i++)
|
|
{
|
|
GSFunctionInfo *aFrame = nil;
|
|
void *address = NSReturnAddress(i);
|
|
void *base;
|
|
NSString *modulePath = __objc_dynamic_get_symbol_path(address, &base);
|
|
GSBinaryFileInfo *bfi;
|
|
|
|
if (modulePath != nil && (bfi = GSLoadModule(modulePath)) != nil)
|
|
{
|
|
aFrame = [bfi functionForAddress: (void*)(address - base)];
|
|
if (aFrame == nil)
|
|
{
|
|
/* We know we have the right module be function lookup
|
|
* failed ... perhaps we need to use the absolute
|
|
* address rather than offest by 'base' in this case.
|
|
*/
|
|
aFrame = [bfi functionForAddress: address];
|
|
}
|
|
//if (aFrame == nil) NSLog(@"BFI base for %@ (%p) is %p", modulePath, address, base);
|
|
}
|
|
else
|
|
{
|
|
NSArray *modules;
|
|
int j;
|
|
int m;
|
|
|
|
//if (modulePath != nil) NSLog(@"BFI not found for %@ (%p)", modulePath, address);
|
|
|
|
modules = GSListModules();
|
|
m = [modules count];
|
|
for (j = 0; j < m; j++)
|
|
{
|
|
bfi = [modules objectAtIndex: j];
|
|
|
|
if ((id)bfi != (id)[NSNull null])
|
|
{
|
|
aFrame = [bfi functionForAddress: address];
|
|
if (aFrame != nil)
|
|
{
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// not found (?!), add an 'unknown' function
|
|
if (aFrame == nil)
|
|
{
|
|
aFrame = [GSFunctionInfo alloc];
|
|
[aFrame initWithModule: nil
|
|
address: address
|
|
file: nil
|
|
function: nil
|
|
line: 0];
|
|
[aFrame autorelease];
|
|
}
|
|
[frames addObject: aFrame];
|
|
}
|
|
// #else
|
|
// int i;
|
|
// int n;
|
|
|
|
// frames = [NSMutableArray new];
|
|
// n = NSCountFrames();
|
|
|
|
// for (i = 0; i < n; i++)
|
|
// {
|
|
// void *address = NSReturnAddress(i);
|
|
|
|
// [frames addObject: [NSString stringWithFormat: @"%p", address]];
|
|
// }
|
|
// #endif
|
|
|
|
return self;
|
|
}
|
|
|
|
- (NSEnumerator*) reverseEnumerator
|
|
{
|
|
return [frames reverseObjectEnumerator];
|
|
}
|
|
|
|
@end
|
|
|
|
// #endif /* GNUSTEP_BASE_MINOR_VERSION */
|
|
// #endif /* GNUSTEP_BASE_MAJOR_VERSION */
|