1 // SPDX-License-Identifier: GPL-2.0
2 /*
3  * Kernel exception handling table support.  Derived from arch/alpha/mm/extable.c.
4  *
5  * Copyright (C) 1998, 1999, 2001-2002, 2004 Hewlett-Packard Co
6  *	David Mosberger-Tang <davidm@hpl.hp.com>
7  */
8 
9 #include <asm/ptrace.h>
10 #include <asm/extable.h>
11 #include <asm/errno.h>
12 #include <asm/processor.h>
13 
14 void
ia64_handle_exception(struct pt_regs * regs,const struct exception_table_entry * e)15 ia64_handle_exception (struct pt_regs *regs, const struct exception_table_entry *e)
16 {
17 	long fix = (u64) &e->fixup + e->fixup;
18 
19 	regs->r8 = -EFAULT;
20 	if (fix & 4)
21 		regs->r9 = 0;
22 	regs->cr_iip = fix & ~0xf;
23 	ia64_psr(regs)->ri = fix & 0x3;		/* set continuation slot number */
24 }
25