diff options
| author | Miod Vallat <miod@cvs.openbsd.org> | 2006-07-25 21:05:32 +0000 |
|---|---|---|
| committer | Miod Vallat <miod@cvs.openbsd.org> | 2006-07-25 21:05:32 +0000 |
| commit | 17567f3f8c210a321cc91a75f8c3cac7b1ff3b54 (patch) | |
| tree | 4c3a53139f7bf745598cc1685bd527bed8b6abef /sys | |
| parent | 5d9eadaee28e513e70ca3ca21ac33eb552425ec3 (diff) | |
Assembly versions of kvtopte() and kvtophys(), better than what gcc
outputs; from NetBSD
Diffstat (limited to 'sys')
| -rw-r--r-- | sys/arch/vax/include/pte.h | 38 |
1 files changed, 28 insertions, 10 deletions
diff --git a/sys/arch/vax/include/pte.h b/sys/arch/vax/include/pte.h index e586d11cd1c..ba91f1faf6e 100644 --- a/sys/arch/vax/include/pte.h +++ b/sys/arch/vax/include/pte.h @@ -1,5 +1,5 @@ -/* $OpenBSD: pte.h,v 1.9 2003/11/10 21:05:06 miod Exp $ */ -/* $NetBSD: pte.h,v 1.13 1999/08/03 19:53:23 ragge Exp $ */ +/* $OpenBSD: pte.h,v 1.10 2006/07/25 21:05:31 miod Exp $ */ +/* $NetBSD: pte.h,v 1.21 2005/12/24 22:45:40 perry Exp $ */ /* * Copyright (c) 1994 Ludd, University of Lule}, Sweden. @@ -65,14 +65,32 @@ extern pt_entry_t *Sysmap; */ #endif -#define kvtopte(va) (&Sysmap[PG_PFNUM(va)]) -#define ptetokv(pt) \ - ((((pt_entry_t *)(pt) - Sysmap) << VAX_PGSHIFT) + 0x80000000) -#define kvtophys(va) \ +#ifdef __ELF__ +#define VAX_SYSMAP "Sysmap" +#else +#define VAX_SYSMAP "_Sysmap" +#endif + +#ifdef __GNUC__ +#define kvtopte(va) ({ \ + pt_entry_t *r; \ + __asm("extzv $9,$21,%1,%0;moval *" VAX_SYSMAP "[%0],%0" : "=r"(r) : "g"(va)); \ + r; \ +}) +#define kvtophys(va) ({ \ + paddr_t r; \ + __asm("extzv $9,$21,%1,%0;ashl $9,*" VAX_SYSMAP "[%0],%0;insv %1,$0,$9,%0" \ + : "=&r"(r) : "g"(va) : "cc"); \ + r; \ +}) +#else /* __GNUC__ */ +#define kvtopte(va) (&Sysmap[PG_PFNUM(va)]) +#define kvtophys(va) \ (((*kvtopte(va) & PG_FRAME) << VAX_PGSHIFT) | ((int)(va) & VAX_PGOFSET)) -#define uvtopte(va, pcb) \ - (((unsigned)va < 0x40000000) ? \ - &((pcb->P0BR)[PG_PFNUM(va)]) : \ - &((pcb->P1BR)[PG_PFNUM(va)])) +#endif /* __GNUC__ */ +#define uvtopte(va, pcb) \ + (((vaddr_t)(va) < 0x40000000) ? \ + &(((pcb)->P0BR)[PG_PFNUM(va)]) : \ + &(((pcb)->P1BR)[PG_PFNUM(va)])) #endif |