1 files changed, 91 insertions, 0 deletions
diff --git a/arch/arm/kernel/arthur.c b/arch/arm/kernel/arthur.c
new file mode 100644
index 00000000000..a418dad6692
--- /dev/null
+++ b/arch/arm/kernel/arthur.c
@@ -0,0 +1,91 @@
+/*
+ *  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);