w32init.c

该项目主要是将wingdows程序直接运行在linux上

/*
 * w32init.c
 *
 * Copyright (C) 2006  Insigme Co., Ltd
 *
 * Authors: 
 * - Decao Mao, Chenzhan Hu, Lixing Chu, Limin Jin, Liwei Zhou, Zhiqiang Jiao
 *
 * This software has been developed while working on the Linux Unified Kernel
 * project (http://linux.insigma.com.cn) in the Insigma Reaserch Institute,  
 * which is a subdivision of Insigma Co., Ltd (http://www.insigma.com.cn).
 * 
 * The project is sponsored by Insigma Co., Ltd.
 *
 * The authors can be reached at [e-mail].
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of  the GNU General  Public License as published by the
 * Free Software Foundation; either version 2 of the  License, or (at your
 * option) any later version.
 *
 * Revision History:
 *   Jan 2006 - Created.
 */
 
/*
 * w32init.c: initiliase w32systemcall and some object classes
 */
//#define kdebug(fmt ... )
//#define ktrace(fmt ... )
#include <linux/init.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/proc_fs.h>

#include "mutex.h"
#include "event.h"
#include "semaphore.h"
#include "section.h"
#include "file.h"
#include "thread.h"
#include "process.h"
#include "apc.h"

#ifdef CONFIG_UNIFIED_KERNEL

#define TIF_APC 13

asmlinkage int w32system_call(void);
int set_w32system_gate(unsigned int, void *);
int backup_idt_entry(unsigned int n, unsigned long *a, unsigned long *b);
int restore_idt_entry(unsigned int n, unsigned long a, unsigned long b);
unsigned long orig_idt_2e_a, orig_idt_2e_b;
int __init init_pe_binfmt(void);
void __exit exit_pe_binfmt(void);

struct proc_dir_entry *unifiedkernel_proc;
struct list_head object_class_list;

/* do_apc */
__attribute__((regparm(3)))
void do_apc(struct pt_regs *regs, sigset_t *oldset,
		      __u32 thread_info_flags)
{
	struct ethread *thread;
	ktrace("Do Apc\n");
	
	/* Get the Current Thread */
	if (!(thread = thread_find())) {
		kdebug("***error find thread\n");
		clear_tsk_thread_flag(thread->et_task, TIF_APC);
		return;
	}
	KiDeliverApc(0, 0, regs); /* first parament is kernelMode or UserMode or 0 for both*/
}/* end do_apc */

/* w32_init */
static int w32_init(void)
{
	/* store the original address that the 0x2E points */ 
	if (backup_idt_entry(0x2E, &orig_idt_2e_a, &orig_idt_2e_b) == -1) {
		kdebug("Module not loaded. backup_idt_entry error: bad idt entry\n");
		return -1;
	}
	
	/* initialize 0x2E */
	if (set_w32system_gate(0x2E, &w32system_call) == -1) {
		kdebug("Module not loaded. set_w32system_gate error: bad idt entry\n");
		return -1;
	}
	
	ktrace("Module w32 On! vector 0x2E initialized for w32 syscall!\n");
	ktrace("Unifiedkernel loading...\n");

	/* initialise the internal bits */
	INIT_LIST_HEAD(&object_class_list);
	FileClassInit();
	SectionClassInit();
	ThreadClassInit();
	ProcessClassInit();
	init_pe_binfmt();

	ktrace("Initialised successfully!\n");
	return 0;
	
} /* end w32_exit */ 
/* w32_exit */
static void w32_exit(void)
{
	exit_pe_binfmt();

	/* restore 0x2E */
	restore_idt_entry(0x2E, orig_idt_2e_a, orig_idt_2e_b);

	ktrace("Module w32 Off!\n");
} /*end w32_exit */ 

module_init(w32_init);
module_exit(w32_exit);
MODULE_LICENSE("GPL");
#endif