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