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Diffstat (limited to 'tcl8.6/unix/tclLoadOSF.c')
| -rw-r--r-- | tcl8.6/unix/tclLoadOSF.c | 235 |
1 files changed, 0 insertions, 235 deletions
diff --git a/tcl8.6/unix/tclLoadOSF.c b/tcl8.6/unix/tclLoadOSF.c deleted file mode 100644 index 377ed28..0000000 --- a/tcl8.6/unix/tclLoadOSF.c +++ /dev/null @@ -1,235 +0,0 @@ -/* - * tclLoadOSF.c -- - * - * This function provides a version of the TclLoadFile that works under - * OSF/1 1.0/1.1/1.2 and related systems, utilizing the old OSF/1 - * /sbin/loader and /usr/include/loader.h. OSF/1 versions from 1.3 and on - * use ELF, rtld, and dlopen()[/usr/include/ldfcn.h]. - * - * This is useful for: - * OSF/1 1.0, 1.1, 1.2 (from OSF) - * includes: MK4 and AD1 (from OSF RI) - * OSF/1 1.3 (from OSF) using ROSE - * HP OSF/1 1.0 ("Acorn") using COFF - * - * This is likely to be useful for: - * Paragon OSF/1 (from Intel) - * HI-OSF/1 (from Hitachi) - * - * This is NOT to be used on: - * Digitial Alpha OSF/1 systems - * OSF/1 1.3 or later (from OSF) using ELF - * includes: MK6, MK7, AD2, AD3 (from OSF RI) - * - * This approach to things was utter @&^#; thankfully, OSF/1 eventually - * supported dlopen(). - * - * John Robert LoVerso <loverso@freebsd.osf.org> - * - * Copyright (c) 1995-1997 Sun Microsystems, Inc. - * - * See the file "license.terms" for information on usage and redistribution of - * this file, and for a DISCLAIMER OF ALL WARRANTIES. - */ - -#include "tclInt.h" -#include <sys/types.h> -#include <loader.h> - -/* - * Static functions defined within this file. - */ - -static void * FindSymbol(Tcl_Interp *interp, - Tcl_LoadHandle loadHandle, const char* symbol); -static void UnloadFile(Tcl_LoadHandle handle); - -/* - *---------------------------------------------------------------------- - * - * TclpDlopen -- - * - * Dynamically loads a binary code file into 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 interp's result. - * - * Side effects: - * New code suddenly appears in memory. - * - *---------------------------------------------------------------------- - */ - -int -TclpDlopen( - Tcl_Interp *interp, /* Used for error reporting. */ - Tcl_Obj *pathPtr, /* Name of the file containing the desired - * code (UTF-8). */ - 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; - ldr_module_t lm; - char *pkg; - char *fileName = Tcl_GetString(pathPtr); - const char *native; - - /* - * First try the full path the user gave us. This is particularly - * important if the cwd is inside a vfs, and we are trying to load using a - * relative path. - */ - - native = Tcl_FSGetNativePath(pathPtr); - lm = (Tcl_PackageInitProc *) load(native, LDR_NOFLAGS); - - if (lm == LDR_NULL_MODULE) { - /* - * Let the OS loader examine the binary search path for whatever - * string the user gave us which hopefully refers to a file on the - * binary path - */ - - Tcl_DString ds; - - native = Tcl_UtfToExternalDString(NULL, fileName, -1, &ds); - lm = (Tcl_PackageInitProc *) load(native, LDR_NOFLAGS); - Tcl_DStringFree(&ds); - } - - if (lm == LDR_NULL_MODULE) { - Tcl_SetObjResult(interp, Tcl_ObjPrintf( - "couldn't load file \"%s\": %s", - fileName, Tcl_PosixError(interp))); - return TCL_ERROR; - } - - *clientDataPtr = NULL; - - /* - * My convention is to use a [OSF loader] package name the same as shlib, - * since the idiots never implemented ldr_lookup() and it is otherwise - * impossible to get a package name given a module. - * - * I build loadable modules with a makefile rule like - * ld ... -export $@: -o $@ $(OBJS) - */ - - if ((pkg = strrchr(fileName, '/')) == NULL) { - pkg = fileName; - } else { - pkg++; - } - newHandle = ckalloc(sizeof(*newHandle)); - newHandle->clientData = pkg; - newHandle->findSymbolProcPtr = &FindSymbol; - newHandle->unloadFileProcPtr = &UnloadFile; - *loadHandle = newHandle; - *unloadProcPtr = &UnloadFile; - return TCL_OK; -} - -/* - *---------------------------------------------------------------------- - * - * 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, - Tcl_LoadHandle loadHandle, - const char *symbol) -{ - void *retval = ldr_lookup_package((char *) loadHandle, symbol); - - if (retval == NULL && interp != NULL) { - Tcl_SetObjResult(interp, Tcl_ObjPrintf( - "cannot find symbol \"%s\"", symbol)); - Tcl_SetErrorCode(interp, "TCL", "LOOKUP", "LOAD_SYMBOL", symbol, NULL); - } - return retval; -} - -/* - *---------------------------------------------------------------------- - * - * 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: - * Does nothing. Can anything be done? - * - *---------------------------------------------------------------------- - */ - -static void -UnloadFile( - Tcl_LoadHandle loadHandle) /* loadHandle returned by a previous call to - * TclpDlopen(). The loadHandle is a token - * that represents the loaded file. */ -{ - ckfree(loadHandle); -} - -/* - *---------------------------------------------------------------------- - * - * TclGuessPackageName -- - * - * If the "load" command is invoked without providing a package name, - * this function 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; -} - -/* - * Local Variables: - * mode: c - * c-basic-offset: 4 - * fill-column: 78 - * End: - */ |