| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Kernel exception handling table support. Derived from arch/alpha/mm/extable.c. |
| 3 | * |
| 4 | * Copyright (C) 1998, 1999, 2001-2002, 2004 Hewlett-Packard Co |
| 5 | * David Mosberger-Tang <davidm@hpl.hp.com> |
| 6 | */ |
| 7 | |
| Al Viro | 8bec271 | 2016-12-25 14:24:35 -0500 | [diff] [blame] | 8 | #include <asm/ptrace.h> |
| 9 | #include <asm/extable.h> |
| 10 | #include <asm/errno.h> |
| 11 | #include <asm/processor.h> |
| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 12 | |
| 13 | void |
| 14 | ia64_handle_exception (struct pt_regs *regs, const struct exception_table_entry *e) |
| 15 | { |
| Ard Biesheuvel | 8fe9752 | 2016-03-22 14:28:20 -0700 | [diff] [blame] | 16 | long fix = (u64) &e->fixup + e->fixup; |
| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 17 | |
| 18 | regs->r8 = -EFAULT; |
| 19 | if (fix & 4) |
| 20 | regs->r9 = 0; |
| 21 | regs->cr_iip = fix & ~0xf; |
| 22 | ia64_psr(regs)->ri = fix & 0x3; /* set continuation slot number */ |
| 23 | } |