1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* 3 * Copyright (C) 2009 Sunplus Core Technology Co., Ltd. 4 * Lennox Wu <lennox.wu@sunplusct.com> 5 * Chen Liqin <liqin.chen@sunplusct.com> 6 * Copyright (C) 2013 Regents of the University of California 7 */ 8 9 10 #include <linux/extable.h> 11 #include <linux/module.h> 12 #include <linux/uaccess.h> 13 14 #if defined(CONFIG_BPF_JIT) && defined(CONFIG_ARCH_RV64I) 15 int rv_bpf_fixup_exception(const struct exception_table_entry *ex, struct pt_regs *regs); 16 #endif 17 18 int fixup_exception(struct pt_regs *regs) 19 { 20 const struct exception_table_entry *fixup; 21 22 fixup = search_exception_tables(regs->epc); 23 if (!fixup) 24 return 0; 25 26 #if defined(CONFIG_BPF_JIT) && defined(CONFIG_ARCH_RV64I) 27 if (regs->epc >= BPF_JIT_REGION_START && regs->epc < BPF_JIT_REGION_END) 28 return rv_bpf_fixup_exception(fixup, regs); 29 #endif 30 31 regs->epc = fixup->fixup; 32 return 1; 33 } 34