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/* SPDX-License-Identifier: GPL-2.0-only */ /* * Copyright (C) 2016-2017 Synopsys, Inc. (www.synopsys.com) */ #ifndef __SOC_ARC_AUX_H__ #define __SOC_ARC_AUX_H__ #ifdef CONFIG_ARC #define read_aux_reg(r) __builtin_arc_lr(r) /* gcc builtin sr needs reg param to be long immediate */ #define write_aux_reg(r, v) __builtin_arc_sr((unsigned int)(v), r) #else /* !CONFIG_ARC */ static inline int read_aux_reg(u32 r) { return 0; } /* * function helps elide unused variable warning * see: http://lists.infradead.org/pipermail/linux-snps-arc/2016-November/001748.html */ static inline void write_aux_reg(u32 r, u32 v) { ; } #endif #define READ_BCR(reg, into) \ { \ unsigned int tmp; \ tmp = read_aux_reg(reg); \ if (sizeof(tmp) == sizeof(into)) { \ into = *((typeof(into) *)&tmp); \ } else { \ extern void bogus_undefined(void); \ bogus_undefined(); \ } \ } #define WRITE_AUX(reg, into) \ { \ unsigned int tmp; \ if (sizeof(tmp) == sizeof(into)) { \ tmp = (*(unsigned int *)&(into)); \ write_aux_reg(reg, tmp); \ } else { \ extern void bogus_undefined(void); \ bogus_undefined(); \ } \ } #endif
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