summaryrefslogtreecommitdiffstats
path: root/mac/tclMacLoad.c
diff options
context:
space:
mode:
Diffstat (limited to 'mac/tclMacLoad.c')
-rw-r--r--mac/tclMacLoad.c380
1 files changed, 0 insertions, 380 deletions
diff --git a/mac/tclMacLoad.c b/mac/tclMacLoad.c
deleted file mode 100644
index 379b450..0000000
--- a/mac/tclMacLoad.c
+++ /dev/null
@@ -1,380 +0,0 @@
-/*
- * tclMacLoad.c --
- *
- * This procedure provides a version of the TclLoadFile for use
- * on the Macintosh. This procedure will only work with systems
- * that use the Code Fragment Manager.
- *
- * 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.
- *
- * RCS: @(#) $Id: tclMacLoad.c,v 1.16 2002/10/09 11:54:26 das Exp $
- */
-
-#include <CodeFragments.h>
-#include <Errors.h>
-#include <Resources.h>
-#include <Strings.h>
-#include <FSpCompat.h>
-
-/*
- * Seems that the 3.0.1 Universal headers leave this define out. So we
- * define it here...
- */
-
-#ifndef fragNoErr
- #define fragNoErr noErr
-#endif
-
-#include "tclPort.h"
-#include "tclInt.h"
-#include "tclMacInt.h"
-
-#if GENERATINGPOWERPC
- #define OUR_ARCH_TYPE kPowerPCCFragArch
-#else
- #define OUR_ARCH_TYPE kMotorola68KCFragArch
-#endif
-
-/*
- * The following data structure defines the structure of a code fragment
- * resource. We can cast the resource to be of this type to access
- * any fields we need to see.
- */
-struct CfrgHeader {
- long res1;
- long res2;
- long version;
- long res3;
- long res4;
- long filler1;
- long filler2;
- long itemCount;
- char arrayStart; /* Array of externalItems begins here. */
-};
-typedef struct CfrgHeader CfrgHeader, *CfrgHeaderPtr, **CfrgHeaderPtrHand;
-
-/*
- * The below structure defines a cfrag item within the cfrag resource.
- */
-struct CfrgItem {
- OSType archType;
- long updateLevel;
- long currVersion;
- long oldDefVersion;
- long appStackSize;
- short appSubFolder;
- char usage;
- char location;
- long codeOffset;
- long codeLength;
- long res1;
- long res2;
- short itemSize;
- Str255 name; /* This is actually variable sized. */
-};
-typedef struct CfrgItem CfrgItem;
-
-/*
- * On MacOS, old shared libraries which contain many code fragments
- * cannot, it seems, be loaded in one go. We need to look provide
- * the name of a code fragment while we load. Since with the
- * separation of the 'load' and 'findsymbol' be do not necessarily
- * know a symbol name at load time, we have to store some further
- * information in a structure like this so we can ensure we load
- * properly in 'findsymbol' if the first attempts didn't work.
- */
-typedef struct TclMacLoadInfo {
- int loaded;
- CFragConnectionID connID;
- FSSpec fileSpec;
-} TclMacLoadInfo;
-
-static int TryToLoad(Tcl_Interp *interp, TclMacLoadInfo *loadInfo, Tcl_Obj *pathPtr,
- CONST char *sym /* native */);
-
-
-/*
- *----------------------------------------------------------------------
- *
- * TclpDlopen --
- *
- * This procedure is called to carry out dynamic loading of binary
- * code for the Macintosh. This implementation is based on the
- * Code Fragment Manager & will not work on other systems.
- *
- * Results:
- * The result is TCL_ERROR, and an error message is left in
- * the interp's result.
- *
- * Side effects:
- * New binary code is loaded.
- *
- *----------------------------------------------------------------------
- */
-
-int
-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
- * (*unloadProcPtr)() to unload the file. */
- Tcl_FSUnloadFileProc **unloadProcPtr;
- /* Filled with address of Tcl_FSUnloadFileProc
- * function which should be used for
- * this file. */
-{
- OSErr err;
- FSSpec fileSpec;
- CONST char *native;
- TclMacLoadInfo *loadInfo;
-
- native = Tcl_FSGetNativePath(pathPtr);
- err = FSpLocationFromPath(strlen(native), native, &fileSpec);
-
- if (err != noErr) {
- Tcl_SetResult(interp, "could not locate shared library", TCL_STATIC);
- return TCL_ERROR;
- }
-
- loadInfo = (TclMacLoadInfo *) ckalloc(sizeof(TclMacLoadInfo));
- loadInfo->loaded = 0;
- loadInfo->fileSpec = fileSpec;
- loadInfo->connID = NULL;
-
- if (TryToLoad(interp, loadInfo, pathPtr, NULL) != TCL_OK) {
- ckfree((char*) loadInfo);
- return TCL_ERROR;
- }
-
- *loadHandle = (Tcl_LoadHandle)loadInfo;
- *unloadProcPtr = &TclpUnloadFile;
- return TCL_OK;
-}
-
-/*
- * See the comments about 'struct TclMacLoadInfo' above. This
- * function ensures the appropriate library or symbol is
- * loaded.
- */
-static int
-TryToLoad(Tcl_Interp *interp, TclMacLoadInfo *loadInfo, Tcl_Obj *pathPtr,
- CONST char *sym /* native */)
-{
- OSErr err;
- CFragConnectionID connID;
- Ptr dummy;
- short fragFileRef, saveFileRef;
- Handle fragResource;
- UInt32 offset = 0;
- UInt32 length = kCFragGoesToEOF;
- Str255 errName;
- StringPtr fragName=NULL;
-
- if (loadInfo->loaded == 1) {
- return TCL_OK;
- }
-
- /*
- * See if this fragment has a 'cfrg' resource. It will tell us where
- * to look for the fragment in the file. If it doesn't exist we will
- * assume we have a ppc frag using the whole data fork. If it does
- * exist we find the frag that matches the one we are looking for and
- * get the offset and size from the resource.
- */
-
- saveFileRef = CurResFile();
- SetResLoad(false);
- fragFileRef = FSpOpenResFile(&loadInfo->fileSpec, fsRdPerm);
- SetResLoad(true);
- if (fragFileRef != -1) {
- if (sym != NULL) {
- UseResFile(fragFileRef);
- fragResource = Get1Resource(kCFragResourceType, kCFragResourceID);
- HLock(fragResource);
- if (ResError() == noErr) {
- CfrgItem* srcItem;
- long itemCount, index;
- Ptr itemStart;
-
- itemCount = (*(CfrgHeaderPtrHand)fragResource)->itemCount;
- itemStart = &(*(CfrgHeaderPtrHand)fragResource)->arrayStart;
- for (index = 0; index < itemCount;
- index++, itemStart += srcItem->itemSize) {
- srcItem = (CfrgItem*)itemStart;
- if (srcItem->archType != OUR_ARCH_TYPE) continue;
- if (!strncasecmp(sym, (char *) srcItem->name + 1,
- strlen(sym))) {
- offset = srcItem->codeOffset;
- length = srcItem->codeLength;
- fragName=srcItem->name;
- }
- }
- }
- }
- /*
- * Close the resource file. If the extension wants to reopen the
- * resource fork it should use the tclMacLibrary.c file during it's
- * construction.
- */
- HUnlock(fragResource);
- ReleaseResource(fragResource);
- CloseResFile(fragFileRef);
- UseResFile(saveFileRef);
- if (sym == NULL) {
- /* We just return */
- return TCL_OK;
- }
- }
-
- /*
- * Now we can attempt to load the fragment using the offset & length
- * obtained from the resource. We don't worry about the main entry point
- * as we are going to search for specific entry points passed to us.
- */
-
- err = GetDiskFragment(&loadInfo->fileSpec, offset, length, fragName,
- kLoadCFrag, &connID, &dummy, errName);
-
- if (err != fragNoErr) {
- p2cstr(errName);
- if(pathPtr) {
- Tcl_AppendResult(interp, "couldn't load file \"",
- Tcl_GetString(pathPtr),
- "\": ", errName, (char *) NULL);
- } else if(sym) {
- Tcl_AppendResult(interp, "couldn't load library \"",
- sym,
- "\": ", errName, (char *) NULL);
- }
- return TCL_ERROR;
- }
-
- loadInfo->connID = connID;
- loadInfo->loaded = 1;
-
- return TCL_OK;
-}
-
-/*
- *----------------------------------------------------------------------
- *
- * TclpFindSymbol --
- *
- * 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.
- *
- *----------------------------------------------------------------------
- */
-Tcl_PackageInitProc*
-TclpFindSymbol(interp, loadHandle, symbol)
- Tcl_Interp *interp;
- Tcl_LoadHandle loadHandle;
- CONST char *symbol;
-{
- Tcl_DString ds;
- Tcl_PackageInitProc *proc=NULL;
- TclMacLoadInfo *loadInfo = (TclMacLoadInfo *)loadHandle;
- Str255 symbolName;
- CFragSymbolClass symClass;
- OSErr err;
-
- if (loadInfo->loaded == 0) {
- int res;
- /*
- * First thing we must do is infer the package name from the
- * sym variable. We do this by removing the '_Init'.
- */
- Tcl_UtfToExternalDString(NULL, symbol, -1, &ds);
- Tcl_DStringSetLength(&ds, Tcl_DStringLength(&ds) - 5);
- res = TryToLoad(interp, loadInfo, NULL, Tcl_DStringValue(&ds));
- Tcl_DStringFree(&ds);
- if (res != TCL_OK) {
- return NULL;
- }
- }
-
- Tcl_UtfToExternalDString(NULL, symbol, -1, &ds);
- strcpy((char *) symbolName + 1, Tcl_DStringValue(&ds));
- symbolName[0] = (unsigned) Tcl_DStringLength(&ds);
- err = FindSymbol(loadInfo->connID, symbolName, (Ptr *) &proc, &symClass);
- Tcl_DStringFree(&ds);
- if (err != fragNoErr || symClass == kDataCFragSymbol) {
- Tcl_SetResult(interp,
- "could not find Initialization routine in library",
- TCL_STATIC);
- return NULL;
- }
- return proc;
-}
-
-/*
- *----------------------------------------------------------------------
- *
- * 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.
- *
- * Results:
- * None.
- *
- * Side effects:
- * Does nothing. Can anything be done?
- *
- *----------------------------------------------------------------------
- */
-
-void
-TclpUnloadFile(loadHandle)
- Tcl_LoadHandle loadHandle; /* loadHandle returned by a previous call
- * to TclpDlopen(). The loadHandle is
- * a token that represents the loaded
- * file. */
-{
- TclMacLoadInfo *loadInfo = (TclMacLoadInfo *)loadHandle;
- if (loadInfo->loaded) {
- CloseConnection((CFragConnectionID*) &(loadInfo->connID));
- }
- ckfree((char*)loadInfo);
-}
-
-/*
- *----------------------------------------------------------------------
- *
- * 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;
-}
generated by cgit v0.12 at 2024-08-20 13:47:03 (GMT)