diff options
| author | Michael Shalayeff <mickey@cvs.openbsd.org> | 2000-02-02 22:08:56 +0000 |
|---|---|---|
| committer | Michael Shalayeff <mickey@cvs.openbsd.org> | 2000-02-02 22:08:56 +0000 |
| commit | 077cbaf20c71a046f5346fcd80d1351740e11817 (patch) | |
| tree | 9bc49a08a72c7fa01d13fc98ac56589562d40217 /sys/arch | |
| parent | 5387a1a1c051368365dea2efd115475d108b2192 (diff) | |
MD swap macros
Diffstat (limited to 'sys/arch')
| -rw-r--r-- | sys/arch/hppa/include/endian.h | 46 |
1 files changed, 30 insertions, 16 deletions
diff --git a/sys/arch/hppa/include/endian.h b/sys/arch/hppa/include/endian.h index 335512c9096..48962ada7a8 100644 --- a/sys/arch/hppa/include/endian.h +++ b/sys/arch/hppa/include/endian.h @@ -1,7 +1,7 @@ -/* $OpenBSD: endian.h,v 1.3 1999/05/10 16:02:08 espie Exp $ */ +/* $OpenBSD: endian.h,v 1.4 2000/02/02 22:08:55 mickey Exp $ */ /* - * Copyright (c) 1998 Michael Shalayeff + * Copyright (c) 1998-2000 Michael Shalayeff * All rights reserved. * * Redistribution and use in source and binary forms, with or without @@ -35,25 +35,39 @@ #ifdef __GNUC__ -#define __swap32md(x) ({ \ - register u_int32_t __swap32md_x, __swap32md_t; \ - \ - __asm ("shd %2,%2,8,%0 ! dep %0,15,8,%0 ! shd %%r0,%2,16,%1 !" \ - "extru %2,7,8,%0 ! dep %1,23,8,%0" \ - : "=r" (__swap32md_x), "=r" (__swap32md_t) : "r" (x)); \ - __swap32md_x; \ +#define __swap32md(x) ({ \ + register u_int32_t __swap32md_x; \ + \ + __asm ("extru %1, 7,8,%%r19\n\t" \ + "shd %1,%1,8,%0\n\t" \ + "dep %0,15,8,%0\n\t" \ + "dep %%r19,31,8,%0" \ + : "=&r" (__swap32md_x) \ + : "r" (x) : "r19"); \ + __swap32md_x; \ }) -#define __swap16md(x) ({ \ - register u_int16_t __swap16md_x = (x); \ - \ - __asm ("shd %0,%0,24,%0 ! extru %0,15,8,%0 ! dep %%r0,15,16,%0" \ - : "=r" (__swap16md_x)); \ - __swap16md_x; \ +#if 1 +/* + * Use generic C version because w/ asm inline below + * gcc inserts extra "extru r,31,16,r" to convert + * to 16 bit entity, which produces overhead we don't need. + * Besides, gcc does swap16 same way by itself. + */ +#define __swap16md(x) __swap16gen(x) +#else +#define __swap16md(x) ({ \ + register u_int16_t __swap16md_x; \ + \ + __asm ("extru %1,23,8,%0\n\t" \ + "dep %1,23,8,%0" \ + : "=&r" (__swap16md_x) : "r" (x));\ + __swap16md_x; \ }) +#endif /* Tell sys/endian.h we have MD variants of the swap macros. */ -/* #define MD_SWAP */ +#define MD_SWAP #endif /* __GNUC__ */ |