diff options
Diffstat (limited to 'unix/tclLoadNext.c')
| -rw-r--r-- | unix/tclLoadNext.c | 148 |
1 files changed, 67 insertions, 81 deletions
diff --git a/unix/tclLoadNext.c b/unix/tclLoadNext.c index 3de3cf1..7ba5eff 100644 --- a/unix/tclLoadNext.c +++ b/unix/tclLoadNext.c @@ -1,13 +1,14 @@ -/* +/* * tclLoadNext.c -- * - * This procedure provides a version of the TclLoadFile that works with - * NeXTs rld_* dynamic loading. This file provided by Pedja Bogdanovich. + * This procedure provides a version of the TclLoadFile that + * works with NeXTs rld_* dynamic loading. This file provided + * by Pedja Bogdanovich. * * 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. + * See the file "license.terms" for information on usage and redistribution + * of this file, and for a DISCLAIMER OF ALL WARRANTIES. */ #include "tclInt.h" @@ -19,12 +20,12 @@ * * TclpDlopen -- * - * Dynamically loads a binary code file into memory and returns a handle - * to the new code. + * 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. + * 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. @@ -33,69 +34,65 @@ */ int -TclpDlopen( - Tcl_Interp *interp, /* Used for error reporting. */ - Tcl_Obj *pathPtr, /* Name of the file containing the desired +TclpDlopen(interp, pathPtr, loadHandle, unloadProcPtr) + 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 + Tcl_LoadHandle *loadHandle; /* Filled with token for dynamically loaded + * file which will be passed back to * (*unloadProcPtr)() to unload the file. */ - Tcl_FSUnloadFileProc **unloadProcPtr) + Tcl_FSUnloadFileProc **unloadProcPtr; /* Filled with address of Tcl_FSUnloadFileProc - * function which should be used for this - * file. */ + * function which should be used for + * this file. */ { struct mach_header *header; char *fileName; char *files[2]; CONST char *native; int result = 1; - + NXStream *errorStream = NXOpenMemory(0,0,NX_READWRITE); - + fileName = Tcl_GetString(pathPtr); - /* - * 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. + /* + * 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); files = {native,NULL}; result = rld_load(errorStream, &header, files, NULL); - + if (!result) { - /* - * 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 + /* + * 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); files = {native,NULL}; result = rld_load(errorStream, &header, files, NULL); Tcl_DStringFree(&ds); } - + if (!result) { char *data; int len, maxlen; - NXGetMemoryBuffer(errorStream,&data,&len,&maxlen); - Tcl_AppendResult(interp, "couldn't load file \"", fileName, "\": ", - data, NULL); + Tcl_AppendResult(interp, "couldn't load file \"", + fileName, "\": ", data, NULL); NXCloseMemory(errorStream, NX_FREEBUFFER); return TCL_ERROR; } NXCloseMemory(errorStream, NX_FREEBUFFER); - + *loadHandle = (Tcl_LoadHandle)1; /* A dummy non-NULL value */ *unloadProcPtr = &TclpUnloadFile; - + return TCL_OK; } @@ -104,31 +101,27 @@ TclpDlopen( * * TclpFindSymbol -- * - * Looks up a symbol, by name, through a handle associated with a - * previously loaded piece of code (shared library). + * 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. + * 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. * *---------------------------------------------------------------------- */ - -Tcl_PackageInitProc * -TclpFindSymbol( - Tcl_Interp *interp, - Tcl_LoadHandle loadHandle, - CONST char *symbol) +Tcl_PackageInitProc* +TclpFindSymbol(interp, loadHandle, symbol) + Tcl_Interp *interp; + Tcl_LoadHandle loadHandle; + CONST char *symbol; { - Tcl_PackageInitProc *proc = NULL; - if (symbol) { - char sym[strlen(symbol) + 2]; - - sym[0] = '_'; - sym[1] = 0; - strcat(sym, symbol); - rld_lookup(NULL, sym, (unsigned long *)&proc); + Tcl_PackageInitProc *proc=NULL; + if(symbol) { + char sym[strlen(symbol)+2]; + sym[0]='_'; sym[1]=0; strcat(sym,symbol); + rld_lookup(NULL,sym,(unsigned long *)&proc); } return proc; } @@ -138,9 +131,9 @@ TclpFindSymbol( * * TclpUnloadFile -- * - * Unloads a dynamically loaded binary code file from memory. Code - * pointers in the formerly loaded file are no longer valid after calling - * this function. + * 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. @@ -152,10 +145,11 @@ TclpFindSymbol( */ void -TclpUnloadFile( - Tcl_LoadHandle loadHandle) /* loadHandle returned by a previous call to - * TclpDlopen(). The loadHandle is a token - * that represents the loaded file. */ +TclpUnloadFile(loadHandle) + Tcl_LoadHandle loadHandle; /* loadHandle returned by a previous call + * to TclpDlopen(). The loadHandle is + * a token that represents the loaded + * file. */ { } @@ -164,14 +158,14 @@ TclpUnloadFile( * * TclGuessPackageName -- * - * If the "load" command is invoked without providing a package name, - * this procedure is invoked to try to figure it out. + * 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. + * 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. @@ -180,19 +174,11 @@ TclpUnloadFile( */ int -TclGuessPackageName( - CONST char *fileName, /* Name of file containing package (already +TclGuessPackageName(fileName, bufPtr) + 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. */ + 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: - */ |