mirror of
https://github.com/cc65/cc65.git
synced 2024-12-23 04:30:10 +00:00
83 lines
3.5 KiB
C
83 lines
3.5 KiB
C
/*****************************************************************************/
|
|
/* */
|
|
/* em_load.c */
|
|
/* */
|
|
/* Loader module for EM drivers */
|
|
/* */
|
|
/* */
|
|
/* */
|
|
/* (C) 2002-2003 Ullrich von Bassewitz */
|
|
/* Römerstrasse 52 */
|
|
/* D-70794 Filderstadt */
|
|
/* EMail: uz@cc65.org */
|
|
/* */
|
|
/* */
|
|
/* This software is provided 'as-is', without any expressed or implied */
|
|
/* warranty. In no event will the authors be held liable for any damages */
|
|
/* arising from the use of this software. */
|
|
/* */
|
|
/* Permission is granted to anyone to use this software for any purpose, */
|
|
/* including commercial applications, and to alter it and redistribute it */
|
|
/* freely, subject to the following restrictions: */
|
|
/* */
|
|
/* 1. The origin of this software must not be misrepresented; you must not */
|
|
/* claim that you wrote the original software. If you use this software */
|
|
/* in a product, an acknowledgment in the product documentation would be */
|
|
/* appreciated but is not required. */
|
|
/* 2. Altered source versions must be plainly marked as such, and must not */
|
|
/* be misrepresented as being the original software. */
|
|
/* 3. This notice may not be removed or altered from any source */
|
|
/* distribution. */
|
|
/* */
|
|
/*****************************************************************************/
|
|
|
|
|
|
|
|
#include <string.h>
|
|
#include <unistd.h>
|
|
#include <fcntl.h>
|
|
#include <modload.h>
|
|
#include <em.h>
|
|
#include <em/em-kernel.h>
|
|
|
|
|
|
|
|
unsigned char __fastcall__ em_load_driver (const char* name)
|
|
/* Load an extended memory driver and return an error code */
|
|
{
|
|
static struct mod_ctrl ctrl = {
|
|
read /* Read from disk */
|
|
};
|
|
unsigned char Res;
|
|
|
|
/* Check if we do already have a driver loaded. If so, remove it. */
|
|
if (em_drv != 0) {
|
|
em_uninstall ();
|
|
}
|
|
|
|
/* Now open the file */
|
|
ctrl.callerdata = open (name, O_RDONLY);
|
|
if (ctrl.callerdata >= 0) {
|
|
|
|
/* Load the module */
|
|
Res = mod_load (&ctrl);
|
|
|
|
/* Close the input file */
|
|
close (ctrl.callerdata);
|
|
|
|
/* Check the return code */
|
|
if (Res == MLOAD_OK) {
|
|
|
|
/* Check the driver signature, install the driver */
|
|
return em_install (ctrl.module);
|
|
|
|
}
|
|
}
|
|
|
|
/* Error loading the driver */
|
|
return EM_ERR_CANNOT_LOAD;
|
|
}
|
|
|
|
|
|
|