18c2ecf20Sopenharmony_ci// SPDX-License-Identifier: GPL-2.0 28c2ecf20Sopenharmony_ci/* 38c2ecf20Sopenharmony_ci * Kernel exception handling table support. Derived from arch/alpha/mm/extable.c. 48c2ecf20Sopenharmony_ci * 58c2ecf20Sopenharmony_ci * Copyright (C) 1998, 1999, 2001-2002, 2004 Hewlett-Packard Co 68c2ecf20Sopenharmony_ci * David Mosberger-Tang <davidm@hpl.hp.com> 78c2ecf20Sopenharmony_ci */ 88c2ecf20Sopenharmony_ci 98c2ecf20Sopenharmony_ci#include <asm/ptrace.h> 108c2ecf20Sopenharmony_ci#include <asm/extable.h> 118c2ecf20Sopenharmony_ci#include <asm/errno.h> 128c2ecf20Sopenharmony_ci#include <asm/processor.h> 138c2ecf20Sopenharmony_ci 148c2ecf20Sopenharmony_civoid 158c2ecf20Sopenharmony_ciia64_handle_exception (struct pt_regs *regs, const struct exception_table_entry *e) 168c2ecf20Sopenharmony_ci{ 178c2ecf20Sopenharmony_ci long fix = (u64) &e->fixup + e->fixup; 188c2ecf20Sopenharmony_ci 198c2ecf20Sopenharmony_ci regs->r8 = -EFAULT; 208c2ecf20Sopenharmony_ci if (fix & 4) 218c2ecf20Sopenharmony_ci regs->r9 = 0; 228c2ecf20Sopenharmony_ci regs->cr_iip = fix & ~0xf; 238c2ecf20Sopenharmony_ci ia64_psr(regs)->ri = fix & 0x3; /* set continuation slot number */ 248c2ecf20Sopenharmony_ci} 25