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MIPS: Simplify __bswapdi2() and __bswapsi2() 

Use macro definitions ___constant_swab64 and ___constant_swab32
to simplify __bswapdi2() and __bswapsi2().

Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
This commit is contained in:
Tiezhu Yang 2022-09-29 15:39:58 +08:00 committed by Thomas Bogendoerfer
parent 0668951705
commit 8e6ec6ce02
2 changed files with 4 additions and 12 deletions
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10
arch/mips/lib/bswapdi.c
View File

@ -1,19 +1,13 @@
// SPDX-License-Identifier: GPL-2.0
#include <linux/export.h>
#include <linux/compiler.h>
#include <uapi/linux/swab.h>
/* To silence -Wmissing-prototypes. */
unsigned long long __bswapdi2(unsigned long long u);
unsigned long long notrace __bswapdi2(unsigned long long u)
{
return (((u) & 0xff00000000000000ull) >> 56) |
(((u) & 0x00ff000000000000ull) >> 40) |
(((u) & 0x0000ff0000000000ull) >> 24) |
(((u) & 0x000000ff00000000ull) >> 8) |
(((u) & 0x00000000ff000000ull) << 8) |
(((u) & 0x0000000000ff0000ull) << 24) |
(((u) & 0x000000000000ff00ull) << 40) |
(((u) & 0x00000000000000ffull) << 56);
return ___constant_swab64(u);
}
EXPORT_SYMBOL(__bswapdi2);

6
arch/mips/lib/bswapsi.c
View File

@ -1,15 +1,13 @@
// SPDX-License-Identifier: GPL-2.0
#include <linux/export.h>
#include <linux/compiler.h>
#include <uapi/linux/swab.h>
/* To silence -Wmissing-prototypes. */
unsigned int __bswapsi2(unsigned int u);
unsigned int notrace __bswapsi2(unsigned int u)
{
return (((u) & 0xff000000) >> 24) |
(((u) & 0x00ff0000) >> 8) |
(((u) & 0x0000ff00) << 8) |
(((u) & 0x000000ff) << 24);
return ___constant_swab32(u);
}
EXPORT_SYMBOL(__bswapsi2);