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/*
* Arthur personality
* Copyright (C) 1998-1999 Philip Blundell
*/
#include <linux/personality.h>
#include <linux/module.h>
#include <linux/stddef.h>
#include <linux/signal.h>
#include <linux/sched.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_code = nr;
/* Bounce it to the emulator */
send_sig_info(SIGSWI, &info, current);
}
static struct exec_domain arthur_exec_domain = {
"Arthur", /* name */
(lcall7_func)arthur_lcall7,
PER_RISCOS, PER_RISCOS,
arthur_to_linux_signals,
linux_to_arthur_signals,
#ifdef MODULE
&__this_module, /* No usage counter. */
#else
NULL,
#endif
NULL /* Nothing after this in the list. */
};
/*
* We could do with some locking to stop Arthur being removed while
* processes are using it.
*/
int __init arthur_init(void)
{
return register_exec_domain(&arthur_exec_domain);
}
void __exit arthur_exit(void)
{
unregister_exec_domain(&arthur_exec_domain);
}
module_init(arthur_init);
module_exit(arthur_exit);
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