diff options
| author | Thomas Weißschuh <linux@weissschuh.net> | 2026-04-05 17:31:05 +0200 |
|---|---|---|
| committer | Thomas Weißschuh <linux@weissschuh.net> | 2026-04-07 09:27:25 +0200 |
| commit | ce834c9cb984a9b85160a2c3a3821e179fa502fa (patch) | |
| tree | 1c839e7addbfe75d9334b24ca599902584fa4013 /tools/include/nolibc | |
| parent | 2eb64b936d3b6332ae44bbf91277f912be5597e2 (diff) | |
| download | lwn-ce834c9cb984a9b85160a2c3a3821e179fa502fa.tar.gz lwn-ce834c9cb984a9b85160a2c3a3821e179fa502fa.zip | |
tools/nolibc: add byteorder conversions
Add some standard functions to convert between different byte orders.
Conveniently the UAPI headers provide all the necessary functionality.
Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
Acked-by: Willy Tarreau <w@1wt.eu>
Link: https://patch.msgid.link/20260405-nolibc-bswap-v1-1-f7699ca9cee0@weissschuh.net
Diffstat (limited to 'tools/include/nolibc')
| -rw-r--r-- | tools/include/nolibc/Makefile | 2 | ||||
| -rw-r--r-- | tools/include/nolibc/byteswap.h | 21 | ||||
| -rw-r--r-- | tools/include/nolibc/endian.h | 32 | ||||
| -rw-r--r-- | tools/include/nolibc/nolibc.h | 2 |
4 files changed, 57 insertions, 0 deletions
diff --git a/tools/include/nolibc/Makefile b/tools/include/nolibc/Makefile index db6db4e6d99e..7455097cff69 100644 --- a/tools/include/nolibc/Makefile +++ b/tools/include/nolibc/Makefile @@ -20,11 +20,13 @@ OUTPUT ?= $(CURDIR)/ architectures := arm arm64 loongarch m68k mips powerpc riscv s390 sh sparc x86 arch_files := arch.h $(addsuffix .h, $(addprefix arch-, $(architectures))) all_files := \ + byteswap.h \ compiler.h \ crt.h \ ctype.h \ dirent.h \ elf.h \ + endian.h \ err.h \ errno.h \ fcntl.h \ diff --git a/tools/include/nolibc/byteswap.h b/tools/include/nolibc/byteswap.h new file mode 100644 index 000000000000..45bbf9609d7a --- /dev/null +++ b/tools/include/nolibc/byteswap.h @@ -0,0 +1,21 @@ +/* SPDX-License-Identifier: LGPL-2.1 OR MIT */ +/* + * Byte swapping for NOLIBC + * Copyright (C) 2026 Thomas Weißschuh <linux@weissschuh.net> + */ + +/* make sure to include all global symbols */ +#include "nolibc.h" + +#ifndef _NOLIBC_BYTESWAP_H +#define _NOLIBC_BYTESWAP_H + +#include "stdint.h" + +#include <linux/swab.h> + +#define bswap_16(_x) __swab16(_x) +#define bswap_32(_x) __swab32(_x) +#define bswap_64(_x) __swab64(_x) + +#endif /* _NOLIBC_BYTESWAP_H */ diff --git a/tools/include/nolibc/endian.h b/tools/include/nolibc/endian.h new file mode 100644 index 000000000000..ccc016ecd5ec --- /dev/null +++ b/tools/include/nolibc/endian.h @@ -0,0 +1,32 @@ +/* SPDX-License-Identifier: LGPL-2.1 OR MIT */ +/* + * Byte order conversion for NOLIBC + * Copyright (C) 2026 Thomas Weißschuh <linux@weissschuh.net> + */ + +/* make sure to include all global symbols */ +#include "nolibc.h" + +#ifndef _NOLIBC_ENDIAN_H +#define _NOLIBC_ENDIAN_H + +#include "stdint.h" + +#include <asm/byteorder.h> + +#define htobe16(_x) __cpu_to_be16(_x) +#define htole16(_x) __cpu_to_le16(_x) +#define be16toh(_x) __be16_to_cpu(_x) +#define le16toh(_x) __le16_to_cpu(_x) + +#define htobe32(_x) __cpu_to_be32(_x) +#define htole32(_x) __cpu_to_le32(_x) +#define be32toh(_x) __be32_to_cpu(_x) +#define le32toh(_x) __le32_to_cpu(_x) + +#define htobe64(_x) __cpu_to_be64(_x) +#define htole64(_x) __cpu_to_le64(_x) +#define be64toh(_x) __be64_to_cpu(_x) +#define le64toh(_x) __le64_to_cpu(_x) + +#endif /* _NOLIBC_ENDIAN_H */ diff --git a/tools/include/nolibc/nolibc.h b/tools/include/nolibc/nolibc.h index 294bac1b9039..f4120f65fe79 100644 --- a/tools/include/nolibc/nolibc.h +++ b/tools/include/nolibc/nolibc.h @@ -131,6 +131,8 @@ #include "poll.h" #include "math.h" #include "err.h" +#include "byteswap.h" +#include "endian.h" /* Used by programs to avoid std includes */ #define NOLIBC |