cregit-Linux how code gets into the kernel

Release 4.18 arch/nds32/include/asm/assembler.h

// SPDX-License-Identifier: GPL-2.0
// Copyright (C) 2005-2017 Andes Technology Corporation

#ifndef __NDS32_ASSEMBLER_H__

#define __NDS32_ASSEMBLER_H__

.macro gie_disable
	setgie.d
	dsb
.endm

.macro gie_enable
	setgie.e
	dsb
.endm

.macro gie_save oldpsw
	mfsr \oldpsw, $ir0
	setgie.d
        dsb
.endm

.macro gie_restore oldpsw
	andi \oldpsw, \oldpsw, #0x1
	beqz \oldpsw, 7001f
	setgie.e
	dsb
7001:
.endm



#define USER(insn,  reg, addr, opr)	\
9999:   insn  reg, addr, opr;           \
        .section __ex_table,"a";        \
        .align 3;                       \
        .long   9999b, 9001f;           \
        .previous

#endif /* __NDS32_ASSEMBLER_H__ */

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