^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * Kernel exception handling table support. Derived from arch/alpha/mm/extable.c.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Copyright (C) 1998, 1999, 2001-2002, 2004 Hewlett-Packard Co
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) * David Mosberger-Tang <davidm@hpl.hp.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) #include <asm/ptrace.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <asm/extable.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <asm/errno.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <asm/processor.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) ia64_handle_exception (struct pt_regs *regs, const struct exception_table_entry *e)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) long fix = (u64) &e->fixup + e->fixup;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) regs->r8 = -EFAULT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) if (fix & 4)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) regs->r9 = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) regs->cr_iip = fix & ~0xf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) ia64_psr(regs)->ri = fix & 0x3; /* set continuation slot number */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) }