diff options
| author | Warner Losh <imp@FreeBSD.org> | 2023-01-20 23:32:45 +0000 |
|---|---|---|
| committer | Warner Losh <imp@FreeBSD.org> | 2023-01-20 23:32:45 +0000 |
| commit | 30e0d2a51026830e5141ce3dd43854819bba910c (patch) | |
| tree | 8c2ba64dd48ecf556ecd4a9b0a8fdc3917465fc9 /include | |
| parent | e8c1bd7257bf0ec1f2315376e707b2171000502e (diff) | |
Diffstat (limited to 'include')
| -rw-r--r-- | include/Makefile | 4 | ||||
| -rw-r--r-- | include/endian.h | 43 |
2 files changed, 45 insertions, 2 deletions
diff --git a/include/Makefile b/include/Makefile index 643451367b1b..aa4c115a3931 100644 --- a/include/Makefile +++ b/include/Makefile @@ -14,8 +14,8 @@ SUBDIR+= i386 SUBDIR_PARALLEL= INCS= a.out.h ar.h assert.h bitstring.h complex.h cpio.h _ctype.h ctype.h \ db.h \ - dirent.h dlfcn.h elf.h elf-hints.h err.h fmtmsg.h fnmatch.h fstab.h \ - fts.h ftw.h getopt.h glob.h grp.h \ + dirent.h dlfcn.h elf.h elf-hints.h endian.h err.h fmtmsg.h fnmatch.h \ + fstab.h fts.h ftw.h getopt.h glob.h grp.h \ ieeefp.h ifaddrs.h \ inttypes.h iso646.h kenv.h langinfo.h libgen.h limits.h link.h \ locale.h malloc.h malloc_np.h memory.h monetary.h mpool.h mqueue.h \ diff --git a/include/endian.h b/include/endian.h new file mode 100644 index 000000000000..c7b78217cedd --- /dev/null +++ b/include/endian.h @@ -0,0 +1,43 @@ +/*- + * Copyright (c) 2021 M. Warner Losh <imp@FreeBSD.org> + * + * SPDX-License-Identifier: BSD-2-Clause + */ + +/* + * A mostly Linux/glibc-compatible endian.h + */ + +#ifndef _ENDIAN_H_ +#define _ENDIAN_H_ + +/* + * FreeBSD's sys/_endian.h is very close to the interface provided on Linux by + * glibc's endian.h. + */ +#include <sys/_endian.h> + +/* + * glibc uses double underscore for these symbols. Define these unconditionally. + * The compiler defines __BYTE_ORDER__ these days, so we don't do anything + * with that since sys/endian.h defines _BYTE_ORDER based on it. + */ +#define __BIG_ENDIAN _BIG_ENDIAN +#define __BYTE_ORDER _BYTE_ORDER +#define __LITTLE_ENDIAN _LITTLE_ENDIAN +#define __PDP_ENDIAN _PDP_ENDIAN + +/* + * FreeBSD's sys/endian.h and machine/endian.h doesn't define a separate + * byte order for floats. Use the host non-float byte order. + */ +#define __FLOAT_WORD_ORDER _BYTE_ORDER + +/* + * We don't define BIG_ENDI, LITTLE_ENDI, HIGH_HALF and LOW_HALF macros that + * glibc's endian.h defines since those appear to be internal to internal to + * glibc. We also don't try to emulate the various helper macros that glibc + * uses to limit namespace visibility. + */ + +#endif /* _ENDIAN_H_ */ |