721 lines
20 KiB
C
721 lines
20 KiB
C
/*
|
||
* tclLoadDyld.c --
|
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*
|
||
* This procedure provides a version of the TclLoadFile that works with
|
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* Apple's dyld dynamic loading.
|
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* Original version of his file (superseded long ago) provided by
|
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* Wilfredo Sanchez (wsanchez@apple.com).
|
||
*
|
||
* Copyright (c) 1995 Apple Computer, Inc.
|
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* Copyright (c) 2001-2007 Daniel A. Steffen <das@users.sourceforge.net>
|
||
*
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||
* See the file "license.terms" for information on usage and redistribution of
|
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* this file, and for a DISCLAIMER OF ALL WARRANTIES.
|
||
*/
|
||
|
||
#include "tclInt.h"
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||
|
||
#ifndef MODULE_SCOPE
|
||
# define MODULE_SCOPE extern
|
||
#endif
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||
|
||
/*
|
||
* Use preferred dlfcn API on 10.4 and later
|
||
*/
|
||
|
||
#ifndef TCL_DYLD_USE_DLFCN
|
||
# ifdef NO_DLFCN_H
|
||
# define TCL_DYLD_USE_DLFCN 0
|
||
# else
|
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# define TCL_DYLD_USE_DLFCN 1
|
||
# endif
|
||
#endif
|
||
|
||
/*
|
||
* Use deprecated NSModule API only to support 10.3 and earlier:
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||
*/
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||
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||
#ifndef TCL_DYLD_USE_NSMODULE
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# define TCL_DYLD_USE_NSMODULE 0
|
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#endif
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||
|
||
/*
|
||
* Use includes for the API we're using.
|
||
*/
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#if TCL_DYLD_USE_DLFCN
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# include <dlfcn.h>
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#endif /* TCL_DYLD_USE_DLFCN */
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|
||
#if TCL_DYLD_USE_NSMODULE || defined(TCL_LOAD_FROM_MEMORY)
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||
#if defined (__clang__) || ((__GNUC__) && ((__GNUC__ > 4) || ((__GNUC__ == 4) && (__GNUC_MINOR__ > 5))))
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#pragma GCC diagnostic ignored "-Wdeprecated-declarations"
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#endif
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||
#include <mach-o/dyld.h>
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#include <mach-o/fat.h>
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#include <mach-o/swap.h>
|
||
#include <mach-o/arch.h>
|
||
#include <libkern/OSByteOrder.h>
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||
#include <mach/mach.h>
|
||
|
||
typedef struct Tcl_DyldModuleHandle {
|
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struct Tcl_DyldModuleHandle *nextPtr;
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NSModule module;
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} Tcl_DyldModuleHandle;
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#endif /* TCL_DYLD_USE_NSMODULE || TCL_LOAD_FROM_MEMORY */
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||
typedef struct {
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||
void *dlHandle;
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||
#if TCL_DYLD_USE_NSMODULE || defined(TCL_LOAD_FROM_MEMORY)
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const struct mach_header *dyldLibHeader;
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Tcl_DyldModuleHandle *modulePtr;
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#endif
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} Tcl_DyldLoadHandle;
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#if TCL_DYLD_USE_DLFCN || defined(TCL_LOAD_FROM_MEMORY)
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MODULE_SCOPE long tclMacOSXDarwinRelease;
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#endif
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||
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||
/*
|
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* Static functions defined in this file.
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*/
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static void * FindSymbol(Tcl_Interp *interp,
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Tcl_LoadHandle loadHandle, const char *symbol);
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static void UnloadFile(Tcl_LoadHandle handle);
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/*
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*----------------------------------------------------------------------
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*
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* DyldOFIErrorMsg --
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*
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* Converts a numerical NSObjectFileImage error into an error message
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* string.
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*
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* Results:
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* Error message string.
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*
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* Side effects:
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* None.
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*
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*----------------------------------------------------------------------
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*/
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#if TCL_DYLD_USE_NSMODULE || defined(TCL_LOAD_FROM_MEMORY)
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static const char *
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DyldOFIErrorMsg(
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int err)
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{
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switch(err) {
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case NSObjectFileImageSuccess:
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return NULL;
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case NSObjectFileImageFailure:
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return "object file setup failure";
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case NSObjectFileImageInappropriateFile:
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return "not a Mach-O MH_BUNDLE file";
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case NSObjectFileImageArch:
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return "no object for this architecture";
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case NSObjectFileImageFormat:
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return "bad object file format";
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case NSObjectFileImageAccess:
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return "can't read object file";
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default:
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return "unknown error";
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}
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}
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#endif /* TCL_DYLD_USE_NSMODULE || TCL_LOAD_FROM_MEMORY */
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/*
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*----------------------------------------------------------------------
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*
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* TclpDlopen --
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*
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* Dynamically loads a binary code file into memory and returns a handle
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* to the new code.
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*
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* Results:
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* A standard Tcl completion code. If an error occurs, an error message
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* is left in the interpreter's result.
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*
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* Side effects:
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* New code suddenly appears in memory.
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*
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*----------------------------------------------------------------------
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*/
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MODULE_SCOPE int
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TclpDlopen(
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Tcl_Interp *interp, /* Used for error reporting. */
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Tcl_Obj *pathPtr, /* Name of the file containing the desired
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* code (UTF-8). */
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Tcl_LoadHandle *loadHandle, /* Filled with token for dynamically loaded
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* file which will be passed back to
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* (*unloadProcPtr)() to unload the file. */
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Tcl_FSUnloadFileProc **unloadProcPtr,
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/* Filled with address of Tcl_FSUnloadFileProc
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* function which should be used for this
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* file. */
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int flags)
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{
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Tcl_DyldLoadHandle *dyldLoadHandle;
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Tcl_LoadHandle newHandle;
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void *dlHandle = NULL;
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#if TCL_DYLD_USE_NSMODULE || defined(TCL_LOAD_FROM_MEMORY)
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const struct mach_header *dyldLibHeader = NULL;
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Tcl_DyldModuleHandle *modulePtr = NULL;
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#endif
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#if TCL_DYLD_USE_NSMODULE
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NSLinkEditErrors editError;
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int errorNumber;
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const char *errorName, *objFileImageErrMsg = NULL;
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#endif /* TCL_DYLD_USE_NSMODULE */
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const char *errMsg = NULL;
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int result;
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Tcl_DString ds;
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const char *nativePath, *nativeFileName = NULL;
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#if TCL_DYLD_USE_DLFCN
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int dlopenflags = 0;
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#endif /* TCL_DYLD_USE_DLFCN */
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/*
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* First try the full path the user gave us. This is particularly
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* important if the cwd is inside a vfs, and we are trying to load using a
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* relative path.
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*/
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nativePath = Tcl_FSGetNativePath(pathPtr);
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nativeFileName = Tcl_UtfToExternalDString(NULL, Tcl_GetString(pathPtr),
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-1, &ds);
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#if TCL_DYLD_USE_DLFCN
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/*
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* Use (RTLD_NOW|RTLD_LOCAL) as default, see [Bug #3216070]
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*/
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if (flags & TCL_LOAD_GLOBAL) {
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dlopenflags |= RTLD_GLOBAL;
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} else {
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dlopenflags |= RTLD_LOCAL;
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}
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if (flags & TCL_LOAD_LAZY) {
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dlopenflags |= RTLD_LAZY;
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} else {
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dlopenflags |= RTLD_NOW;
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}
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dlHandle = dlopen(nativePath, dlopenflags);
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if (!dlHandle) {
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/*
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* Let the OS loader examine the binary search path for whatever string
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* the user gave us which hopefully refers to a file on the binary
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* path.
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*/
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dlHandle = dlopen(nativeFileName, dlopenflags);
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if (!dlHandle) {
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errMsg = dlerror();
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}
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}
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#endif /* TCL_DYLD_USE_DLFCN */
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if (!dlHandle) {
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#if TCL_DYLD_USE_NSMODULE
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dyldLibHeader = NSAddImage(nativePath,
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NSADDIMAGE_OPTION_RETURN_ON_ERROR);
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if (!dyldLibHeader) {
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NSLinkEditError(&editError, &errorNumber, &errorName, &errMsg);
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if (editError == NSLinkEditFileAccessError) {
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/*
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* The requested file was not found. Let the OS loader examine
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* the binary search path for whatever string the user gave us
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* which hopefully refers to a file on the binary path.
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*/
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dyldLibHeader = NSAddImage(nativeFileName,
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NSADDIMAGE_OPTION_WITH_SEARCHING |
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NSADDIMAGE_OPTION_RETURN_ON_ERROR);
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if (!dyldLibHeader) {
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NSLinkEditError(&editError, &errorNumber, &errorName,
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&errMsg);
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}
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} else if ((editError == NSLinkEditFileFormatError
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&& errorNumber == EBADMACHO)
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|| editError == NSLinkEditOtherError){
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NSObjectFileImageReturnCode err;
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||
NSObjectFileImage dyldObjFileImage;
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||
NSModule module;
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||
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/*
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* The requested file was found but was not of type MH_DYLIB,
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* attempt to load it as a MH_BUNDLE.
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||
*/
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||
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err = NSCreateObjectFileImageFromFile(nativePath,
|
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&dyldObjFileImage);
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if (err == NSObjectFileImageSuccess && dyldObjFileImage) {
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int nsflags = NSLINKMODULE_OPTION_RETURN_ON_ERROR;
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if (!(flags & 1)) nsflags |= NSLINKMODULE_OPTION_PRIVATE;
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||
if (!(flags & 2)) nsflags |= NSLINKMODULE_OPTION_BINDNOW;
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module = NSLinkModule(dyldObjFileImage, nativePath, nsflags);
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NSDestroyObjectFileImage(dyldObjFileImage);
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if (module) {
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modulePtr = ckalloc(sizeof(Tcl_DyldModuleHandle));
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modulePtr->module = module;
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modulePtr->nextPtr = NULL;
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} else {
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NSLinkEditError(&editError, &errorNumber, &errorName,
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&errMsg);
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||
}
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||
} else {
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objFileImageErrMsg = DyldOFIErrorMsg(err);
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||
}
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||
}
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||
}
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||
#endif /* TCL_DYLD_USE_NSMODULE */
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||
}
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||
|
||
if (dlHandle
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||
#if TCL_DYLD_USE_NSMODULE
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|| dyldLibHeader || modulePtr
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||
#endif /* TCL_DYLD_USE_NSMODULE */
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||
) {
|
||
dyldLoadHandle = ckalloc(sizeof(Tcl_DyldLoadHandle));
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||
dyldLoadHandle->dlHandle = dlHandle;
|
||
#if TCL_DYLD_USE_NSMODULE || defined(TCL_LOAD_FROM_MEMORY)
|
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dyldLoadHandle->dyldLibHeader = dyldLibHeader;
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||
dyldLoadHandle->modulePtr = modulePtr;
|
||
#endif /* TCL_DYLD_USE_NSMODULE || TCL_LOAD_FROM_MEMORY */
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||
newHandle = ckalloc(sizeof(*newHandle));
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newHandle->clientData = dyldLoadHandle;
|
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newHandle->findSymbolProcPtr = &FindSymbol;
|
||
newHandle->unloadFileProcPtr = &UnloadFile;
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||
*unloadProcPtr = &UnloadFile;
|
||
*loadHandle = newHandle;
|
||
result = TCL_OK;
|
||
} else {
|
||
Tcl_Obj *errObj;
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||
|
||
TclNewObj(errObj);
|
||
if (errMsg != NULL) {
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||
Tcl_AppendToObj(errObj, errMsg, -1);
|
||
}
|
||
#if TCL_DYLD_USE_NSMODULE
|
||
if (objFileImageErrMsg) {
|
||
Tcl_AppendPrintfToObj(errObj,
|
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"\nNSCreateObjectFileImageFromFile() error: %s",
|
||
objFileImageErrMsg);
|
||
}
|
||
#endif /* TCL_DYLD_USE_NSMODULE */
|
||
Tcl_SetObjResult(interp, errObj);
|
||
result = TCL_ERROR;
|
||
}
|
||
|
||
Tcl_DStringFree(&ds);
|
||
return result;
|
||
}
|
||
|
||
/*
|
||
*----------------------------------------------------------------------
|
||
*
|
||
* FindSymbol --
|
||
*
|
||
* Looks up a symbol, by name, through a handle associated with a
|
||
* previously loaded piece of code (shared library).
|
||
*
|
||
* Results:
|
||
* Returns a pointer to the function associated with 'symbol' if it is
|
||
* found. Otherwise returns NULL and may leave an error message in the
|
||
* interp's result.
|
||
*
|
||
*----------------------------------------------------------------------
|
||
*/
|
||
|
||
static void *
|
||
FindSymbol(
|
||
Tcl_Interp *interp, /* For error reporting. */
|
||
Tcl_LoadHandle loadHandle, /* Handle from TclpDlopen. */
|
||
const char *symbol) /* Symbol name to look up. */
|
||
{
|
||
Tcl_DyldLoadHandle *dyldLoadHandle = loadHandle->clientData;
|
||
Tcl_PackageInitProc *proc = NULL;
|
||
const char *errMsg = NULL;
|
||
Tcl_DString ds;
|
||
const char *native;
|
||
|
||
native = Tcl_UtfToExternalDString(NULL, symbol, -1, &ds);
|
||
if (dyldLoadHandle->dlHandle) {
|
||
#if TCL_DYLD_USE_DLFCN
|
||
proc = dlsym(dyldLoadHandle->dlHandle, native);
|
||
if (!proc) {
|
||
errMsg = dlerror();
|
||
}
|
||
#endif /* TCL_DYLD_USE_DLFCN */
|
||
} else {
|
||
#if TCL_DYLD_USE_NSMODULE || defined(TCL_LOAD_FROM_MEMORY)
|
||
NSSymbol nsSymbol = NULL;
|
||
Tcl_DString newName;
|
||
|
||
/*
|
||
* dyld adds an underscore to the beginning of symbol names.
|
||
*/
|
||
|
||
Tcl_DStringInit(&newName);
|
||
TclDStringAppendLiteral(&newName, "_");
|
||
native = Tcl_DStringAppend(&newName, native, -1);
|
||
if (dyldLoadHandle->dyldLibHeader) {
|
||
nsSymbol = NSLookupSymbolInImage(dyldLoadHandle->dyldLibHeader,
|
||
native, NSLOOKUPSYMBOLINIMAGE_OPTION_BIND_NOW |
|
||
NSLOOKUPSYMBOLINIMAGE_OPTION_RETURN_ON_ERROR);
|
||
if (nsSymbol) {
|
||
/*
|
||
* Until dyld supports unloading of MY_DYLIB binaries, the
|
||
* following is not needed.
|
||
*/
|
||
|
||
#ifdef DYLD_SUPPORTS_DYLIB_UNLOADING
|
||
NSModule module = NSModuleForSymbol(nsSymbol);
|
||
Tcl_DyldModuleHandle *modulePtr = dyldLoadHandle->modulePtr;
|
||
|
||
while (modulePtr != NULL) {
|
||
if (module == modulePtr->module) {
|
||
break;
|
||
}
|
||
modulePtr = modulePtr->nextPtr;
|
||
}
|
||
if (modulePtr == NULL) {
|
||
modulePtr = ckalloc(sizeof(Tcl_DyldModuleHandle));
|
||
modulePtr->module = module;
|
||
modulePtr->nextPtr = dyldLoadHandle->modulePtr;
|
||
dyldLoadHandle->modulePtr = modulePtr;
|
||
}
|
||
#endif /* DYLD_SUPPORTS_DYLIB_UNLOADING */
|
||
} else {
|
||
NSLinkEditErrors editError;
|
||
int errorNumber;
|
||
const char *errorName;
|
||
|
||
NSLinkEditError(&editError, &errorNumber, &errorName, &errMsg);
|
||
}
|
||
} else if (dyldLoadHandle->modulePtr) {
|
||
nsSymbol = NSLookupSymbolInModule(
|
||
dyldLoadHandle->modulePtr->module, native);
|
||
}
|
||
if (nsSymbol) {
|
||
proc = NSAddressOfSymbol(nsSymbol);
|
||
}
|
||
Tcl_DStringFree(&newName);
|
||
#endif /* TCL_DYLD_USE_NSMODULE */
|
||
}
|
||
Tcl_DStringFree(&ds);
|
||
if (errMsg && (interp != NULL)) {
|
||
Tcl_SetObjResult(interp, Tcl_ObjPrintf(
|
||
"cannot find symbol \"%s\": %s", symbol, errMsg));
|
||
Tcl_SetErrorCode(interp, "TCL", "LOOKUP", "LOAD_SYMBOL", symbol,
|
||
NULL);
|
||
}
|
||
return proc;
|
||
}
|
||
|
||
/*
|
||
*----------------------------------------------------------------------
|
||
*
|
||
* UnloadFile --
|
||
*
|
||
* Unloads a dynamically loaded binary code file from memory. Code
|
||
* pointers in the formerly loaded file are no longer valid after calling
|
||
* this function.
|
||
*
|
||
* Results:
|
||
* None.
|
||
*
|
||
* Side effects:
|
||
* Code dissapears from memory. Note that dyld currently only supports
|
||
* unloading of binaries of type MH_BUNDLE loaded with NSLinkModule() in
|
||
* TclpDlopen() above.
|
||
*
|
||
*----------------------------------------------------------------------
|
||
*/
|
||
|
||
static void
|
||
UnloadFile(
|
||
Tcl_LoadHandle loadHandle) /* loadHandle returned by a previous call to
|
||
* TclpDlopen(). The loadHandle is a token
|
||
* that represents the loaded file. */
|
||
{
|
||
Tcl_DyldLoadHandle *dyldLoadHandle = loadHandle->clientData;
|
||
|
||
if (dyldLoadHandle->dlHandle) {
|
||
#if TCL_DYLD_USE_DLFCN
|
||
(void) dlclose(dyldLoadHandle->dlHandle);
|
||
#endif /* TCL_DYLD_USE_DLFCN */
|
||
} else {
|
||
#if TCL_DYLD_USE_NSMODULE || defined(TCL_LOAD_FROM_MEMORY)
|
||
Tcl_DyldModuleHandle *modulePtr = dyldLoadHandle->modulePtr;
|
||
|
||
while (modulePtr != NULL) {
|
||
void *ptr = modulePtr;
|
||
|
||
(void) NSUnLinkModule(modulePtr->module,
|
||
NSUNLINKMODULE_OPTION_RESET_LAZY_REFERENCES);
|
||
modulePtr = modulePtr->nextPtr;
|
||
ckfree(ptr);
|
||
}
|
||
#endif /* TCL_DYLD_USE_NSMODULE */
|
||
}
|
||
ckfree(dyldLoadHandle);
|
||
ckfree(loadHandle);
|
||
}
|
||
|
||
/*
|
||
*----------------------------------------------------------------------
|
||
*
|
||
* TclGuessPackageName --
|
||
*
|
||
* If the "load" command is invoked without providing a package name,
|
||
* this procedure is invoked to try to figure it out.
|
||
*
|
||
* Results:
|
||
* Always returns 0 to indicate that we couldn't figure out a package
|
||
* name; generic code will then try to guess the package from the file
|
||
* name. A return value of 1 would have meant that we figured out the
|
||
* package name and put it in bufPtr.
|
||
*
|
||
* Side effects:
|
||
* None.
|
||
*
|
||
*----------------------------------------------------------------------
|
||
*/
|
||
|
||
int
|
||
TclGuessPackageName(
|
||
const char *fileName, /* Name of file containing package (already
|
||
* translated to local form if needed). */
|
||
Tcl_DString *bufPtr) /* Initialized empty dstring. Append package
|
||
* name to this if possible. */
|
||
{
|
||
return 0;
|
||
}
|
||
|
||
/*
|
||
*----------------------------------------------------------------------
|
||
*
|
||
* TclpLoadMemoryGetBuffer --
|
||
*
|
||
* Allocate a buffer that can be used with TclpLoadMemory() below.
|
||
*
|
||
* Results:
|
||
* Pointer to allocated buffer or NULL if an error occurs.
|
||
*
|
||
* Side effects:
|
||
* Buffer is allocated.
|
||
*
|
||
*----------------------------------------------------------------------
|
||
*/
|
||
|
||
#ifdef TCL_LOAD_FROM_MEMORY
|
||
MODULE_SCOPE void *
|
||
TclpLoadMemoryGetBuffer(
|
||
Tcl_Interp *interp, /* Used for error reporting. */
|
||
int size) /* Size of desired buffer. */
|
||
{
|
||
void *buffer = NULL;
|
||
|
||
/*
|
||
* NSCreateObjectFileImageFromMemory is available but always fails
|
||
* prior to Darwin 7.
|
||
*/
|
||
if (tclMacOSXDarwinRelease >= 7) {
|
||
/*
|
||
* We must allocate the buffer using vm_allocate, because
|
||
* NSCreateObjectFileImageFromMemory will dispose of it using
|
||
* vm_deallocate.
|
||
*/
|
||
|
||
if (vm_allocate(mach_task_self(), (vm_address_t *) &buffer, size, 1)) {
|
||
buffer = NULL;
|
||
}
|
||
}
|
||
return buffer;
|
||
}
|
||
#endif /* TCL_LOAD_FROM_MEMORY */
|
||
|
||
/*
|
||
*----------------------------------------------------------------------
|
||
*
|
||
* TclpLoadMemory --
|
||
*
|
||
* Dynamically loads binary code file from memory and returns a handle to
|
||
* the new code.
|
||
*
|
||
* Results:
|
||
* A standard Tcl completion code. If an error occurs, an error message
|
||
* is left in the interpreter's result.
|
||
*
|
||
* Side effects:
|
||
* New code is loaded from memory.
|
||
*
|
||
*----------------------------------------------------------------------
|
||
*/
|
||
|
||
#ifdef TCL_LOAD_FROM_MEMORY
|
||
MODULE_SCOPE int
|
||
TclpLoadMemory(
|
||
Tcl_Interp *interp, /* Used for error reporting. */
|
||
void *buffer, /* Buffer containing the desired code
|
||
* (allocated with TclpLoadMemoryGetBuffer). */
|
||
int size, /* Allocation size of buffer. */
|
||
int codeSize, /* Size of code data read into buffer or -1 if
|
||
* an error occurred and the buffer should
|
||
* just be freed. */
|
||
Tcl_LoadHandle *loadHandle, /* Filled with token for dynamically loaded
|
||
* file which will be passed back to
|
||
* (*unloadProcPtr)() to unload the file. */
|
||
Tcl_FSUnloadFileProc **unloadProcPtr,
|
||
/* Filled with address of Tcl_FSUnloadFileProc
|
||
* function which should be used for this
|
||
* file. */
|
||
int flags)
|
||
{
|
||
Tcl_LoadHandle newHandle;
|
||
Tcl_DyldLoadHandle *dyldLoadHandle;
|
||
NSObjectFileImage dyldObjFileImage = NULL;
|
||
Tcl_DyldModuleHandle *modulePtr;
|
||
NSModule module;
|
||
const char *objFileImageErrMsg = NULL;
|
||
int nsflags = NSLINKMODULE_OPTION_RETURN_ON_ERROR;
|
||
|
||
/*
|
||
* Try to create an object file image that we can load from.
|
||
*/
|
||
|
||
if (codeSize >= 0) {
|
||
NSObjectFileImageReturnCode err = NSObjectFileImageSuccess;
|
||
const struct fat_header *fh = buffer;
|
||
uint32_t ms = 0;
|
||
#ifndef __LP64__
|
||
const struct mach_header *mh = NULL;
|
||
# define mh_size sizeof(struct mach_header)
|
||
# define mh_magic MH_MAGIC
|
||
# define arch_abi 0
|
||
#else
|
||
const struct mach_header_64 *mh = NULL;
|
||
# define mh_size sizeof(struct mach_header_64)
|
||
# define mh_magic MH_MAGIC_64
|
||
# define arch_abi CPU_ARCH_ABI64
|
||
#endif /* __LP64__ */
|
||
|
||
if ((size_t) codeSize >= sizeof(struct fat_header)
|
||
&& fh->magic == OSSwapHostToBigInt32(FAT_MAGIC)) {
|
||
uint32_t fh_nfat_arch = OSSwapBigToHostInt32(fh->nfat_arch);
|
||
|
||
/*
|
||
* Fat binary, try to find mach_header for our architecture
|
||
*/
|
||
|
||
if ((size_t) codeSize >= sizeof(struct fat_header) +
|
||
fh_nfat_arch * sizeof(struct fat_arch)) {
|
||
void *fatarchs = (char*)buffer + sizeof(struct fat_header);
|
||
const NXArchInfo *arch = NXGetLocalArchInfo();
|
||
struct fat_arch *fa;
|
||
|
||
if (fh->magic != FAT_MAGIC) {
|
||
swap_fat_arch(fatarchs, fh_nfat_arch, arch->byteorder);
|
||
}
|
||
fa = NXFindBestFatArch(arch->cputype | arch_abi,
|
||
arch->cpusubtype, fatarchs, fh_nfat_arch);
|
||
if (fa) {
|
||
mh = (void *)((char *) buffer + fa->offset);
|
||
ms = fa->size;
|
||
} else {
|
||
err = NSObjectFileImageInappropriateFile;
|
||
}
|
||
if (fh->magic != FAT_MAGIC) {
|
||
swap_fat_arch(fatarchs, fh_nfat_arch, arch->byteorder);
|
||
}
|
||
} else {
|
||
err = NSObjectFileImageInappropriateFile;
|
||
}
|
||
} else {
|
||
/*
|
||
* Thin binary
|
||
*/
|
||
|
||
mh = buffer;
|
||
ms = codeSize;
|
||
}
|
||
if (ms && !(ms >= mh_size && mh->magic == mh_magic &&
|
||
mh->filetype == MH_BUNDLE)) {
|
||
err = NSObjectFileImageInappropriateFile;
|
||
}
|
||
if (err == NSObjectFileImageSuccess) {
|
||
err = NSCreateObjectFileImageFromMemory(buffer, codeSize,
|
||
&dyldObjFileImage);
|
||
if (err != NSObjectFileImageSuccess) {
|
||
objFileImageErrMsg = DyldOFIErrorMsg(err);
|
||
}
|
||
} else {
|
||
objFileImageErrMsg = DyldOFIErrorMsg(err);
|
||
}
|
||
}
|
||
|
||
/*
|
||
* If it went wrong (or we were asked to just deallocate), get rid of the
|
||
* memory block and create an error message.
|
||
*/
|
||
|
||
if (dyldObjFileImage == NULL) {
|
||
vm_deallocate(mach_task_self(), (vm_address_t) buffer, size);
|
||
if (objFileImageErrMsg != NULL) {
|
||
Tcl_SetObjResult(interp, Tcl_ObjPrintf(
|
||
"NSCreateObjectFileImageFromMemory() error: %s",
|
||
objFileImageErrMsg));
|
||
}
|
||
return TCL_ERROR;
|
||
}
|
||
|
||
/*
|
||
* Extract the module we want from the image of the object file.
|
||
*/
|
||
|
||
if (!(flags & 1)) nsflags |= NSLINKMODULE_OPTION_PRIVATE;
|
||
if (!(flags & 2)) nsflags |= NSLINKMODULE_OPTION_BINDNOW;
|
||
module = NSLinkModule(dyldObjFileImage, "[Memory Based Bundle]", nsflags);
|
||
NSDestroyObjectFileImage(dyldObjFileImage);
|
||
if (!module) {
|
||
NSLinkEditErrors editError;
|
||
int errorNumber;
|
||
const char *errorName, *errMsg;
|
||
|
||
NSLinkEditError(&editError, &errorNumber, &errorName, &errMsg);
|
||
Tcl_SetObjResult(interp, Tcl_NewStringObj(errMsg, -1));
|
||
return TCL_ERROR;
|
||
}
|
||
|
||
/*
|
||
* Stash the module reference within the load handle we create and return.
|
||
*/
|
||
|
||
modulePtr = ckalloc(sizeof(Tcl_DyldModuleHandle));
|
||
modulePtr->module = module;
|
||
modulePtr->nextPtr = NULL;
|
||
dyldLoadHandle = ckalloc(sizeof(Tcl_DyldLoadHandle));
|
||
dyldLoadHandle->dlHandle = NULL;
|
||
dyldLoadHandle->dyldLibHeader = NULL;
|
||
dyldLoadHandle->modulePtr = modulePtr;
|
||
newHandle = ckalloc(sizeof(*newHandle));
|
||
newHandle->clientData = dyldLoadHandle;
|
||
newHandle->findSymbolProcPtr = &FindSymbol;
|
||
newHandle->unloadFileProcPtr = &UnloadFile;
|
||
*loadHandle = newHandle;
|
||
*unloadProcPtr = &UnloadFile;
|
||
return TCL_OK;
|
||
}
|
||
#endif /* TCL_LOAD_FROM_MEMORY */
|
||
|
||
/*
|
||
* Local Variables:
|
||
* mode: c
|
||
* c-basic-offset: 4
|
||
* fill-column: 79
|
||
* End:
|
||
*/
|