ef127bca11
The return values of fixup_exception() and riscv_bpf_fixup_exception() represent a boolean condition rather than an error code, so it's better to return `bool` rather than `int`. Signed-off-by: Jisheng Zhang <jszhang@kernel.org> Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
28 lines
695 B
C
28 lines
695 B
C
// SPDX-License-Identifier: GPL-2.0-or-later
|
|
/*
|
|
* Copyright (C) 2009 Sunplus Core Technology Co., Ltd.
|
|
* Lennox Wu <lennox.wu@sunplusct.com>
|
|
* Chen Liqin <liqin.chen@sunplusct.com>
|
|
* Copyright (C) 2013 Regents of the University of California
|
|
*/
|
|
|
|
|
|
#include <linux/extable.h>
|
|
#include <linux/module.h>
|
|
#include <linux/uaccess.h>
|
|
|
|
bool fixup_exception(struct pt_regs *regs)
|
|
{
|
|
const struct exception_table_entry *fixup;
|
|
|
|
fixup = search_exception_tables(regs->epc);
|
|
if (!fixup)
|
|
return false;
|
|
|
|
if (regs->epc >= BPF_JIT_REGION_START && regs->epc < BPF_JIT_REGION_END)
|
|
return rv_bpf_fixup_exception(fixup, regs);
|
|
|
|
regs->epc = (unsigned long)&fixup->fixup + fixup->fixup;
|
|
return true;
|
|
}
|