1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /*
3 * Copyright (C) 2021 SiFive
4 */
5
6 #include <linux/linkage.h>
7 #include <asm/asm.h>
8 #include <asm/asm-offsets.h>
9 #include <asm/alternative.h>
10
11 .macro ADD_SIGN_EXT pt_reg badaddr tmp_reg
12 REG_L \badaddr, PT_BADADDR(\pt_reg)
13 li \tmp_reg,1
14 slli \tmp_reg,\tmp_reg,0x26
15 and \tmp_reg,\tmp_reg,\badaddr
16 beqz \tmp_reg, 1f
17 li \tmp_reg,-1
18 slli \tmp_reg,\tmp_reg,0x27
19 or \badaddr,\tmp_reg,\badaddr
20 REG_S \badaddr, PT_BADADDR(\pt_reg)
21 1:
22 .endm
23
24 SYM_FUNC_START(sifive_cip_453_page_fault_trp)
25 ADD_SIGN_EXT a0, t0, t1
26 #ifdef CONFIG_MMU
27 la t0, do_page_fault
28 #else
29 la t0, do_trap_unknown
30 #endif
31 jr t0
32 SYM_FUNC_END(sifive_cip_453_page_fault_trp)
33
34 SYM_FUNC_START(sifive_cip_453_insn_fault_trp)
35 ADD_SIGN_EXT a0, t0, t1
36 la t0, do_trap_insn_fault
37 jr t0
38 SYM_FUNC_END(sifive_cip_453_insn_fault_trp)
Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.