1*4882a593Smuzhiyun // SPDX-License-Identifier: GPL-2.0 2*4882a593Smuzhiyun /* 3*4882a593Smuzhiyun * Kernel exception handling table support. Derived from arch/alpha/mm/extable.c. 4*4882a593Smuzhiyun * 5*4882a593Smuzhiyun * Copyright (C) 1998, 1999, 2001-2002, 2004 Hewlett-Packard Co 6*4882a593Smuzhiyun * David Mosberger-Tang <davidm@hpl.hp.com> 7*4882a593Smuzhiyun */ 8*4882a593Smuzhiyun 9*4882a593Smuzhiyun #include <asm/ptrace.h> 10*4882a593Smuzhiyun #include <asm/extable.h> 11*4882a593Smuzhiyun #include <asm/errno.h> 12*4882a593Smuzhiyun #include <asm/processor.h> 13*4882a593Smuzhiyun 14*4882a593Smuzhiyun void ia64_handle_exception(struct pt_regs * regs,const struct exception_table_entry * e)15*4882a593Smuzhiyunia64_handle_exception (struct pt_regs *regs, const struct exception_table_entry *e) 16*4882a593Smuzhiyun { 17*4882a593Smuzhiyun long fix = (u64) &e->fixup + e->fixup; 18*4882a593Smuzhiyun 19*4882a593Smuzhiyun regs->r8 = -EFAULT; 20*4882a593Smuzhiyun if (fix & 4) 21*4882a593Smuzhiyun regs->r9 = 0; 22*4882a593Smuzhiyun regs->cr_iip = fix & ~0xf; 23*4882a593Smuzhiyun ia64_psr(regs)->ri = fix & 0x3; /* set continuation slot number */ 24*4882a593Smuzhiyun } 25