diff options
| author | Christian Weisgerber <naddy@cvs.openbsd.org> | 2024-05-07 14:26:49 +0000 |
|---|---|---|
| committer | Christian Weisgerber <naddy@cvs.openbsd.org> | 2024-05-07 14:26:49 +0000 |
| commit | a5b7b6ef4f9a056a0edc918f792bb1decb601592 (patch) | |
| tree | 7e62d7cf2849865491a35656a2ef0b9af541f3a0 /sys/arch/amd64/include | |
| parent | 749f1ec339c6cb683670d6a8ac6ff7582c939110 (diff) | |
drop the MD byte-swap micro-optimizations on clang architectures
The compiler already translates the generic code into arithmetic
byte-swap instructions or byte-swapping memory load and store
instructions if available on an architecture.
ok deraadt@ guenther@
Diffstat (limited to 'sys/arch/amd64/include')
| -rw-r--r-- | sys/arch/amd64/include/endian.h | 30 |
1 files changed, 1 insertions, 29 deletions
diff --git a/sys/arch/amd64/include/endian.h b/sys/arch/amd64/include/endian.h index 3b077cd9295..3a2b46d2c51 100644 --- a/sys/arch/amd64/include/endian.h +++ b/sys/arch/amd64/include/endian.h @@ -1,4 +1,4 @@ -/* $OpenBSD: endian.h,v 1.7 2018/10/02 21:30:44 naddy Exp $ */ +/* $OpenBSD: endian.h,v 1.8 2024/05/07 14:26:48 naddy Exp $ */ /*- * Copyright (c) 1997 Niklas Hallqvist. All rights reserved. @@ -27,34 +27,6 @@ #ifndef _MACHINE_ENDIAN_H_ #define _MACHINE_ENDIAN_H_ -#ifndef __FROM_SYS__ENDIAN -#include <sys/_types.h> -#endif - -static __inline __uint16_t -__swap16md(__uint16_t _x) -{ - __asm ("rorw $8, %w0" : "+r" (_x)); - return (_x); -} - -static __inline __uint32_t -__swap32md(__uint32_t _x) -{ - __asm ("bswap %0" : "+r" (_x)); - return (_x); -} - -static __inline __uint64_t -__swap64md(__uint64_t _x) -{ - __asm ("bswapq %0" : "+r" (_x)); - return (_x); -} - -/* Tell sys/endian.h we have MD variants of the swap macros. */ -#define __HAVE_MD_SWAP - #define _BYTE_ORDER _LITTLE_ENDIAN #ifndef __FROM_SYS__ENDIAN |