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364627596c
Test for big-endian either via __RISCVEB__ which migth be rather old, or check the BYTE_ORDER if the compiler defines it (which should be any modern gcc like v12) Signed-off-by: Ben Dooks <ben.dooks@codethink.co.uk> Acked-by: Leo Yu-Chi Liang <ycliang@andestech.com>
36 lines
998 B
C
36 lines
998 B
C
/*
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* linux/include/asm-arm/byteorder.h
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*
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* Copyright (C) 2017 Andes Technology Corporation
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* Rick Chen, Andes Technology Corporation <rick@andestech.com>
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*
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* ARM Endian-ness. In little endian mode, the data bus is connected such
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* that byte accesses appear as:
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* 0 = d0...d7, 1 = d8...d15, 2 = d16...d23, 3 = d24...d31
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* and word accesses (data or instruction) appear as:
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* d0...d31
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*
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* When in big endian mode, byte accesses appear as:
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* 0 = d24...d31, 1 = d16...d23, 2 = d8...d15, 3 = d0...d7
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* and word accesses (data or instruction) appear as:
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* d0...d31
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*/
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#ifndef __ASM_RISCV_BYTEORDER_H
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#define __ASM_RISCV_BYTEORDER_H
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#include <asm/types.h>
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#if !defined(__STRICT_ANSI__) || defined(__KERNEL__)
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# define __BYTEORDER_HAS_U64__
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# define __SWAB_64_THRU_32__
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#endif
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#if defined(__RISCVEB__) || (defined(__BYTE_ORDER__) && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__)
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#include <linux/byteorder/big_endian.h>
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#else
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#include <linux/byteorder/little_endian.h>
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#endif
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#endif
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