[mirror_ubuntu-bionic-kernel.git] / arch / arm / kernel / arthur.c

/*
 *  linux/arch/arm/kernel/arthur.c
 *
 *  Copyright (C) 1998, 1999, 2000, 2001 Philip Blundell
 *
 * Arthur personality
 */

/*
 * 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.
 */

#include <linux/module.h>
#include <linux/personality.h>
#include <linux/stddef.h>
#include <linux/signal.h>
#include <linux/init.h>

#include <asm/ptrace.h>

/* Arthur doesn't have many signals, and a lot of those that it does
   have don't map easily to any Linux equivalent.  Never mind.  */

#define ARTHUR_SIGABRT		1
#define ARTHUR_SIGFPE		2
#define ARTHUR_SIGILL		3
#define ARTHUR_SIGINT		4
#define ARTHUR_SIGSEGV		5
#define ARTHUR_SIGTERM		6
#define ARTHUR_SIGSTAK		7
#define ARTHUR_SIGUSR1		8
#define ARTHUR_SIGUSR2		9
#define ARTHUR_SIGOSERROR	10

static unsigned long arthur_to_linux_signals[32] = {
	0,	1,	2,	3,	4,	5,	6,	7,
	8,	9,	10,	11,	12,	13,	14,	15,
	16,	17,	18,	19,	20,	21,	22,	23,
	24,	25,	26,	27,	28,	29,	30,	31
};

static unsigned long linux_to_arthur_signals[32] = {
	0,		-1,		ARTHUR_SIGINT,	-1,
       	ARTHUR_SIGILL,	5,		ARTHUR_SIGABRT,	7,
	ARTHUR_SIGFPE,	9,		ARTHUR_SIGUSR1,	ARTHUR_SIGSEGV,	
	ARTHUR_SIGUSR2,	13,		14,		ARTHUR_SIGTERM,
	16,		17,		18,		19,
	20,		21,		22,		23,
	24,		25,		26,		27,
	28,		29,		30,		31
};

static void arthur_lcall7(int nr, struct pt_regs *regs)
{
	struct siginfo info;
	info.si_signo = SIGSWI;
	info.si_errno = nr;
	/* Bounce it to the emulator */
	send_sig_info(SIGSWI, &info, current);
}

static struct exec_domain arthur_exec_domain = {
	.name		= "Arthur",
	.handler	= arthur_lcall7,
	.pers_low	= PER_RISCOS,
	.pers_high	= PER_RISCOS,
	.signal_map	= arthur_to_linux_signals,
	.signal_invmap	= linux_to_arthur_signals,
	.module		= THIS_MODULE,
};

/*
 * We could do with some locking to stop Arthur being removed while
 * processes are using it.
 */

static int __init arthur_init(void)
{
	return register_exec_domain(&arthur_exec_domain);
}

static void __exit arthur_exit(void)
{
	unregister_exec_domain(&arthur_exec_domain);
}

module_init(arthur_init);
module_exit(arthur_exit);
Commit	Line	Data
1da177e4 LT	1	/*
	2	* linux/arch/arm/kernel/arthur.c
	3	*
	4	* Copyright (C) 1998, 1999, 2000, 2001 Philip Blundell
	5	*
	6	* Arthur personality
	7	*/
	8
	9	/*
	10	* This program is free software; you can redistribute it and/or
	11	* modify it under the terms of the GNU General Public License
	12	* as published by the Free Software Foundation; either version
	13	* 2 of the License, or (at your option) any later version.
	14	*/
	15
	16	#include <linux/module.h>
	17	#include <linux/personality.h>
	18	#include <linux/stddef.h>
	19	#include <linux/signal.h>
	20	#include <linux/init.h>
	21
	22	#include <asm/ptrace.h>
	23
	24	/* Arthur doesn't have many signals, and a lot of those that it does
	25	have don't map easily to any Linux equivalent. Never mind. */
	26
	27	#define ARTHUR_SIGABRT 1
	28	#define ARTHUR_SIGFPE 2
	29	#define ARTHUR_SIGILL 3
	30	#define ARTHUR_SIGINT 4
	31	#define ARTHUR_SIGSEGV 5
	32	#define ARTHUR_SIGTERM 6
	33	#define ARTHUR_SIGSTAK 7
	34	#define ARTHUR_SIGUSR1 8
	35	#define ARTHUR_SIGUSR2 9
	36	#define ARTHUR_SIGOSERROR 10
	37
	38	static unsigned long arthur_to_linux_signals[32] = {
	39	0, 1, 2, 3, 4, 5, 6, 7,
	40	8, 9, 10, 11, 12, 13, 14, 15,
	41	16, 17, 18, 19, 20, 21, 22, 23,
	42	24, 25, 26, 27, 28, 29, 30, 31
	43	};
	44
	45	static unsigned long linux_to_arthur_signals[32] = {
	46	0, -1, ARTHUR_SIGINT, -1,
	47	ARTHUR_SIGILL, 5, ARTHUR_SIGABRT, 7,
	48	ARTHUR_SIGFPE, 9, ARTHUR_SIGUSR1, ARTHUR_SIGSEGV,
	49	ARTHUR_SIGUSR2, 13, 14, ARTHUR_SIGTERM,
	50	16, 17, 18, 19,
	51	20, 21, 22, 23,
	52	24, 25, 26, 27,
	53	28, 29, 30, 31
	54	};
	55
	56	static void arthur_lcall7(int nr, struct pt_regs *regs)
	57	{
	58	struct siginfo info;
	59	info.si_signo = SIGSWI;
	60	info.si_errno = nr;
	61	/* Bounce it to the emulator */
	62	send_sig_info(SIGSWI, &info, current);
	63	}
	64
65	static struct exec_domain arthur_exec_domain = {
66	.name = "Arthur",
67	.handler = arthur_lcall7,
68	.pers_low = PER_RISCOS,
69	.pers_high = PER_RISCOS,
70	.signal_map = arthur_to_linux_signals,
71	.signal_invmap = linux_to_arthur_signals,
72	.module = THIS_MODULE,
73	};
74
75	/*
76	* We could do with some locking to stop Arthur being removed while
77	* processes are using it.
78	*/
79
80	static int __init arthur_init(void)
81	{
82	return register_exec_domain(&arthur_exec_domain);
83	}
84
85	static void __exit arthur_exit(void)
86	{
87	unregister_exec_domain(&arthur_exec_domain);
88	}
89
90	module_init(arthur_init);
91	module_exit(arthur_exit);