load internals refactoring

FossilOrigin-Name: bbffcec48d3efc0e02e13b0bbdcdb98281bf431f

1 files changed, 28 insertions, 41 deletions

diff --git a/unix/tclLoadDyld.c b/unix/tclLoadDyld.c
index 8541416..9eefd91 100644
--- a/unix/tclLoadDyld.c
+++ b/unix/tclLoadDyld.c
@@ -11,7 +11,7 @@
  * See the file "license.terms" for information on usage and redistribution
  * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
  *
- * RCS: @(#) $Id: tclLoadDyld.c,v 1.8 2002/02/25 15:21:59 das Exp $
+ * RCS: @(#) $Id: tclLoadDyld.c,v 1.9 2002/07/17 20:00:46 vincentdarley Exp $
  */
 
 #include "tclInt.h"
@@ -40,17 +40,11 @@
  */
 
 int
-TclpLoadFile(interp, pathPtr, sym1, sym2, proc1Ptr, proc2Ptr, 
-	     clientDataPtr, unloadProcPtr)
+TclpDlopen(interp, pathPtr, loadHandle, unloadProcPtr)
     Tcl_Interp *interp;		/* Used for error reporting. */
     Tcl_Obj *pathPtr;		/* Name of the file containing the desired
-				 * code. */
-    CONST char *sym1, *sym2;	/* Names of two procedures to look up in
-				 * the file's symbol table. */
-    Tcl_PackageInitProc **proc1Ptr, **proc2Ptr;
-				/* Where to return the addresses corresponding
-				 * to sym1 and sym2. */
-    ClientData *clientDataPtr;	/* Filled with token for dynamically loaded
+				 * code (UTF-8). */
+    TclLoadHandle *loadHandle;	/* Filled with token for dynamically loaded
 				 * file which will be passed back to 
 				 * (*unloadProcPtr)() to unload the file. */
     Tcl_FSUnloadFileProc **unloadProcPtr;	
@@ -58,9 +52,7 @@ TclpLoadFile(interp, pathPtr, sym1, sym2, proc1Ptr, proc2Ptr,
 				 * function which should be used for
 				 * this file. */
 {
-    NSSymbol symbol;
     const struct mach_header *dyld_lib;
-    Tcl_DString newName, ds;
     char *native;
 
     native = Tcl_FSGetNativePath(pathPtr);
@@ -75,46 +67,41 @@ TclpLoadFile(interp, pathPtr, sym1, sym2, proc1Ptr, proc2Ptr,
         Tcl_AppendResult(interp, msg, (char *) NULL);
         return TCL_ERROR;
     }
-
+    *loadHandle = (TclLoadHandle)dyld_lib;
     *unloadProcPtr = &TclpUnloadFile;
-
+    return TCL_OK;
+}
+
+Tcl_PackageInitProc*
+TclpFindSymbol(interp, loadHandle, symbol) 
+    Tcl_Interp *interp;
+    TclLoadHandle loadHandle;
+    CONST char *symbol;
+{
+    NSSymbol nsSymbol;
+    CONST char *native;
+    Tcl_DString newName, ds;
+    Tcl_PackageInitProc* proc = NULL;
+    const struct mach_header *dyld_lib = (mach_header *)loadHandle;
     /* 
      * dyld adds an underscore to the beginning of symbol names.
      */
 
-    native = Tcl_UtfToExternalDString(NULL, sym1, -1, &ds);
+    native = Tcl_UtfToExternalDString(NULL, symbol, -1, &ds);
     Tcl_DStringInit(&newName);
     Tcl_DStringAppend(&newName, "_", 1);
     native = Tcl_DStringAppend(&newName, native, -1);
-    symbol = NSLookupSymbolInImage(dyld_lib, native, 
-        NSLOOKUPSYMBOLINIMAGE_OPTION_BIND_NOW | 
-        NSLOOKUPSYMBOLINIMAGE_OPTION_RETURN_ON_ERROR);
-    if(symbol) {
-        *proc1Ptr = NSAddressOfSymbol(symbol);
-        *clientDataPtr = NSModuleForSymbol(symbol);
-    } else {
-        *proc1Ptr=NULL;
-        *clientDataPtr=NULL;
+    nsSymbol = NSLookupSymbolInImage(dyld_lib, native, 
+	NSLOOKUPSYMBOLINIMAGE_OPTION_BIND_NOW | 
+	NSLOOKUPSYMBOLINIMAGE_OPTION_RETURN_ON_ERROR);
+    if(nsSymbol) {
+	proc = NSAddressOfSymbol(nsSymbol);
+	/* *clientDataPtr = NSModuleForSymbol(nsSymbol); */
     }
     Tcl_DStringFree(&newName);
     Tcl_DStringFree(&ds);
-
-    native = Tcl_UtfToExternalDString(NULL, sym2, -1, &ds);
-    Tcl_DStringInit(&newName);
-    Tcl_DStringAppend(&newName, "_", 1);
-    native = Tcl_DStringAppend(&newName, native, -1);
-    symbol = NSLookupSymbolInImage(dyld_lib, native, 
-        NSLOOKUPSYMBOLINIMAGE_OPTION_BIND_NOW | 
-        NSLOOKUPSYMBOLINIMAGE_OPTION_RETURN_ON_ERROR);
-    if(symbol) {
-        *proc2Ptr = NSAddressOfSymbol(symbol);
-    } else {
-        *proc2Ptr=NULL;
-    }
-    Tcl_DStringFree(&newName);
-    Tcl_DStringFree(&ds);
-
-    return TCL_OK;
+    
+    return proc;
 }
 
 /*