39 lines
835 B
ArmAsm
39 lines
835 B
ArmAsm
/* SPDX-License-Identifier: GPL-2.0-only */
|
|
/*
|
|
* Copyright (C) 2021 SiFive
|
|
*/
|
|
|
|
#include <linux/linkage.h>
|
|
#include <asm/asm.h>
|
|
#include <asm/asm-offsets.h>
|
|
#include <asm/alternative.h>
|
|
|
|
.macro ADD_SIGN_EXT pt_reg badaddr tmp_reg
|
|
REG_L \badaddr, PT_BADADDR(\pt_reg)
|
|
li \tmp_reg,1
|
|
slli \tmp_reg,\tmp_reg,0x26
|
|
and \tmp_reg,\tmp_reg,\badaddr
|
|
beqz \tmp_reg, 1f
|
|
li \tmp_reg,-1
|
|
slli \tmp_reg,\tmp_reg,0x27
|
|
or \badaddr,\tmp_reg,\badaddr
|
|
REG_S \badaddr, PT_BADADDR(\pt_reg)
|
|
1:
|
|
.endm
|
|
|
|
SYM_FUNC_START(sifive_cip_453_page_fault_trp)
|
|
ADD_SIGN_EXT a0, t0, t1
|
|
#ifdef CONFIG_MMU
|
|
la t0, do_page_fault
|
|
#else
|
|
la t0, do_trap_unknown
|
|
#endif
|
|
jr t0
|
|
SYM_FUNC_END(sifive_cip_453_page_fault_trp)
|
|
|
|
SYM_FUNC_START(sifive_cip_453_insn_fault_trp)
|
|
ADD_SIGN_EXT a0, t0, t1
|
|
la t0, do_trap_insn_fault
|
|
jr t0
|
|
SYM_FUNC_END(sifive_cip_453_insn_fault_trp)
|