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 000000000000..a418dad6692c
--- /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);