Added a Win32 dll loader for loading/unloading *.prg and *.dsc files. It requires at least WinXP as it uses GET_MODULE_HANDLE_EX_FLAG_FROM_ADDRESS flag for unloading. The "self-unloading" via LOADER_UNLOAD() is implemented by defering the actual unload until back in the main loop using a user-mode APC (Asynchronous Procedure Call).
This commit is contained in:
oliverschmidt
parent
f0e9388fed
commit
96d97031d6
113
platform/win32/loader/dll-loader.c
Normal file
113
platform/win32/loader/dll-loader.c
Normal file
@ -0,0 +1,113 @@
|
||||
/*
|
||||
* Copyright (c) 2006, Swedish Institute of Computer Science.
|
||||
* All rights reserved.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in the
|
||||
* documentation and/or other materials provided with the distribution.
|
||||
* 3. Neither the name of the Institute nor the names of its contributors
|
||||
* may be used to endorse or promote products derived from this software
|
||||
* without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
|
||||
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||||
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
||||
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
|
||||
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||||
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
||||
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
||||
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
||||
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
||||
* SUCH DAMAGE.
|
||||
*
|
||||
* This file is part of the Contiki operating system.
|
||||
*
|
||||
* Author: Oliver Schmidt <ol.sc@web.de>
|
||||
*
|
||||
* $Id: dll-loader.c,v 1.1 2006/08/13 16:49:43 oliverschmidt Exp $
|
||||
*/
|
||||
|
||||
#define WIN32_LEAN_AND_MEAN
|
||||
#define _WIN32_WINNT 0x0501
|
||||
#include <windows.h>
|
||||
|
||||
#include "contiki.h"
|
||||
|
||||
/*---------------------------------------------------------------------------*/
|
||||
int
|
||||
dll_loader_load(char *name, char *arg)
|
||||
{
|
||||
HMODULE handle;
|
||||
struct process **p;
|
||||
|
||||
/* Load and link the program. */
|
||||
handle = LoadLibrary(name);
|
||||
|
||||
if(handle == NULL) {
|
||||
debug_printf("dll_loader_load: loading failed: %d\n", GetLastError());
|
||||
return LOADER_ERR_OPEN;
|
||||
}
|
||||
|
||||
/* Find the main process of the loaded program. */
|
||||
p = (struct process **)GetProcAddress(handle, "process_load");
|
||||
if(p == NULL) {
|
||||
debug_printf("dll_loader_load: could not find process startpoint 'process_load'\n");
|
||||
return LOADER_ERR_READ;
|
||||
}
|
||||
|
||||
/* Start the process. */
|
||||
debug_printf("Starting '%s'\n", (*p)->name);
|
||||
process_start(*p, arg);
|
||||
|
||||
return LOADER_OK;
|
||||
}
|
||||
/*---------------------------------------------------------------------------*/
|
||||
void
|
||||
dll_loader_unload(void *addr)
|
||||
{
|
||||
/* Avoid Access Violation Exception due to unloading code still being executed. */
|
||||
QueueUserAPC((PAPCFUNC)dll_loader_unload_dsc, GetCurrentThread(), (ULONG_PTR)addr);
|
||||
}
|
||||
/*---------------------------------------------------------------------------*/
|
||||
struct dsc *
|
||||
dll_loader_load_dsc(char *name)
|
||||
{
|
||||
HMODULE handle;
|
||||
char symbol[24];
|
||||
struct dsc *d;
|
||||
|
||||
handle = LoadLibrary(name);
|
||||
|
||||
if(handle == NULL) {
|
||||
debug_printf("dll_loader_load_dsc: loading failed: %d\n", GetLastError());
|
||||
return NULL;
|
||||
}
|
||||
|
||||
strcpy(symbol, name);
|
||||
*strchr(symbol, '.') = '_';
|
||||
|
||||
d = (struct dsc *)GetProcAddress(handle, symbol);
|
||||
if(d == NULL) {
|
||||
debug_printf("dll_loader_load_dsc: could not find symbol '%s'\n", symbol);
|
||||
return NULL;
|
||||
}
|
||||
|
||||
return d;
|
||||
}
|
||||
/*---------------------------------------------------------------------------*/
|
||||
void __stdcall
|
||||
dll_loader_unload_dsc(void *addr)
|
||||
{
|
||||
HMODULE handle;
|
||||
|
||||
GetModuleHandleEx(GET_MODULE_HANDLE_EX_FLAG_FROM_ADDRESS |
|
||||
GET_MODULE_HANDLE_EX_FLAG_UNCHANGED_REFCOUNT, addr, &handle);
|
||||
FreeLibrary(handle);
|
||||
}
|
||||
/*---------------------------------------------------------------------------*/
|
||||
43
platform/win32/loader/dll-loader.h
Normal file
43
platform/win32/loader/dll-loader.h
Normal file
@ -0,0 +1,43 @@
|
||||
/*
|
||||
* Copyright (c) 2006, Swedish Institute of Computer Science.
|
||||
* All rights reserved.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in the
|
||||
* documentation and/or other materials provided with the distribution.
|
||||
* 3. Neither the name of the Institute nor the names of its contributors
|
||||
* may be used to endorse or promote products derived from this software
|
||||
* without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
|
||||
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||||
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
||||
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
|
||||
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||||
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
||||
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
||||
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
||||
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
||||
* SUCH DAMAGE.
|
||||
*
|
||||
* This file is part of the Contiki operating system.
|
||||
*
|
||||
* Author: Oliver Schmidt <ol.sc@web.de>
|
||||
*
|
||||
* $Id: dll-loader.h,v 1.1 2006/08/13 16:49:43 oliverschmidt Exp $
|
||||
*/
|
||||
#ifndef __DLL_LOADER_H__
|
||||
#define __DLL_LOADER_H__
|
||||
|
||||
CCI int dll_loader_load(char *name, char *arg);
|
||||
CCI void dll_loader_unload(void *addr);
|
||||
CCI struct dsc *dll_loader_load_dsc(char *name);
|
||||
CCI void __stdcall dll_loader_unload_dsc(void *addr);
|
||||
|
||||
#endif /* __DLL_LOADER_H__ */
|
||||
Loading…
Reference in New Issue
Block a user