| Greg Kroah-Hartman | b244131 | 2017-11-01 15:07:57 +0100 | [diff] [blame] | 1 | // SPDX-License-Identifier: GPL-2.0 |
| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | |
| Al Viro | 8bec271 | 2016-12-25 14:24:35 -0500 | [diff] [blame] | 9 | #include <asm/ptrace.h> |
| 10 | #include <asm/extable.h> |
| 11 | #include <asm/errno.h> |
| 12 | #include <asm/processor.h> |
| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 13 | |
| 14 | void |
| 15 | ia64_handle_exception (struct pt_regs *regs, const struct exception_table_entry *e) |
| 16 | { |
| Ard Biesheuvel | 8fe9752 | 2016-03-22 14:28:20 -0700 | [diff] [blame] | 17 | long fix = (u64) &e->fixup + e->fixup; |
| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | } |