diff options
Diffstat (limited to 'sys/arch/m68k/include/psl.h')
| -rw-r--r-- | sys/arch/m68k/include/psl.h | 45 |
1 files changed, 40 insertions, 5 deletions
diff --git a/sys/arch/m68k/include/psl.h b/sys/arch/m68k/include/psl.h index 8e0823dfe9d..9fbbe9b3277 100644 --- a/sys/arch/m68k/include/psl.h +++ b/sys/arch/m68k/include/psl.h @@ -1,4 +1,4 @@ -/* $OpenBSD: psl.h,v 1.4 2003/06/02 23:27:48 millert Exp $ */ +/* $OpenBSD: psl.h,v 1.5 2006/06/11 20:46:50 miod Exp $ */ /* $NetBSD: psl.h,v 1.5 1994/10/26 07:50:50 cgd Exp $ */ /* @@ -81,10 +81,11 @@ void splassert_fail(int, int, const char *); extern int splassert_ctl; void splassert_check(int, const char *); -#define splassert(__wantipl) do { \ - if (__predict_false(splassert_ctl > 0)) { \ - splassert_check(__wantipl, __func__); \ - } \ +#define splassert(__wantipl) \ +do { \ + if (__predict_false(splassert_ctl > 0)) { \ + splassert_check(__wantipl, __func__); \ + } \ } while (0) #else #define splassert(wantipl) do { /* nothing */ } while (0) @@ -96,6 +97,40 @@ void splassert_check(int, const char *); #define PSLTOIPL(x) (((x) >> 8) & 0xf) #define IPLTOPSL(x) ((((x) & 0xf) << 8) | PSL_S) +/* + * spl functions; all but spl0 are done in-line + */ + +#define _spl(s) \ +({ \ + register int _spl_r; \ + \ + __asm __volatile ("clrl %0; movew sr,%0; movew %1,sr" : \ + "=&d" (_spl_r) : "di" (s)); \ + _spl_r; \ +}) + +#define _splraise(s) \ +({ \ + register int _spl_r; \ + \ + __asm __volatile (" \ + clrl d0 ; \ + movw sr,d0 ; \ + movl d0,%0 ; \ + andw #0x700,d0 ; \ + movw %1,d1 ; \ + andw #0x700,d1 ; \ + cmpw d0,d1 ; \ + jle 1f ; \ + movw %1,sr ; \ + 1:" : \ + "=&d" (_spl_r) : \ + "di" (s) : \ + "d0", "d1"); \ + _spl_r; \ +}) + #endif /* _KERNEL */ #endif /* _M68K_PSL_H_ */ |