/* dl_win32.xs
 * 
 * Platform:	Win32 (Windows NT/Windows 95)
 * Author:	Wei-Yuen Tan (wyt@hip.com)
 * Created:	A warm day in June, 1995
 *
 * Modified:
 *    August 23rd 1995 - rewritten after losing everything when I
 *                       wiped off my NT partition (eek!)
 */

/* Porting notes:

I merely took Paul's dl_dlopen.xs, took out extraneous stuff and
replaced the appropriate SunOS calls with the corresponding Win32
calls.

*/

#define WIN32_LEAN_AND_MEAN
#include <windows.h>
#include <string.h>

#include "EXTERN.h"
#include "perl.h"
#include "XSUB.h"

#include "dlutils.c"	/* SaveError() etc	*/

static void
dl_private_init()
{
    (void)dl_generic_private_init();
}

static int
dl_static_linked(char *filename)
{
    char **p;
    for (p = staticlinkmodules; *p;p++) {
	if (strstr(filename, *p)) return 1;
    };
    return 0;
}

MODULE = DynaLoader	PACKAGE = DynaLoader

BOOT:
    (void)dl_private_init();

void *
dl_load_file(filename,flags=0)
    char *		filename
    int			flags
    PREINIT:
    CODE:
    DLDEBUG(1,fprintf(stderr,"dl_load_file(%s):\n", filename));
    if (dl_static_linked(filename) == 0)
	RETVAL = (void*) LoadLibraryEx(filename, NULL, LOAD_WITH_ALTERED_SEARCH_PATH ) ;
    else
	RETVAL = (void*) GetModuleHandle(NULL);
    DLDEBUG(2,fprintf(stderr," libref=%x\n", RETVAL));
    ST(0) = sv_newmortal() ;
    if (RETVAL == NULL)
	SaveError("%d",GetLastError()) ;
    else
	sv_setiv( ST(0), (IV)RETVAL);


void *
dl_find_symbol(libhandle, symbolname)
    void *	libhandle
    char *	symbolname
    CODE:
    DLDEBUG(2,fprintf(stderr,"dl_find_symbol(handle=%x, symbol=%s)\n",
		      libhandle, symbolname));
    RETVAL = (void*) GetProcAddress((HINSTANCE) libhandle, symbolname);
    DLDEBUG(2,fprintf(stderr,"  symbolref = %x\n", RETVAL));
    ST(0) = sv_newmortal() ;
    if (RETVAL == NULL)
	SaveError("%d",GetLastError()) ;
    else
	sv_setiv( ST(0), (IV)RETVAL);


void
dl_undef_symbols()
    PPCODE:



# These functions should not need changing on any platform:

void
dl_install_xsub(perl_name, symref, filename="$Package")
    char *		perl_name
    void *		symref 
    char *		filename
    CODE:
    DLDEBUG(2,fprintf(stderr,"dl_install_xsub(name=%s, symref=%x)\n",
		      perl_name, symref));
    ST(0)=sv_2mortal(newRV((SV*)newXS(perl_name, (void(*)(CV*))symref, filename)));


char *
dl_error()
    CODE:
    RETVAL = LastError ;
    OUTPUT:
    RETVAL

# end.