diff options
Diffstat (limited to 'sys/arch/sun3/sun3/pmap.c')
| -rw-r--r-- | sys/arch/sun3/sun3/pmap.c | 51 |
1 files changed, 50 insertions, 1 deletions
diff --git a/sys/arch/sun3/sun3/pmap.c b/sys/arch/sun3/sun3/pmap.c index 8395d0e08cc..c6dcd50f671 100644 --- a/sys/arch/sun3/sun3/pmap.c +++ b/sys/arch/sun3/sun3/pmap.c @@ -1,4 +1,4 @@ -/* $NetBSD: pmap.c,v 1.60 1996/02/28 22:51:05 gwr Exp $ */ +/* $NetBSD: pmap.c,v 1.61 1996/05/05 06:02:31 gwr Exp $ */ /* * Copyright (c) 1994, 1995 Gordon W. Ross @@ -3218,6 +3218,55 @@ pmap_prefer(fo, va) } /* + * Copy the kernel segmap into the passed buffer (256 bytes). + */ +void +pmap_get_ksegmap(vaddr) + vm_offset_t vaddr; +{ + vm_offset_t va; + u_char *cp = (u_char*)vaddr; + + va = KERNBASE; + do { + *cp = get_segmap(va); + cp++; + va += NBSG; + } while (va < 0x10000000); +} + +/* + * Copy the pagemap RAM into the passed buffer (one page) + * starting at OFF in the pagemap RAM. + */ +void +pmap_get_pagemap(vaddr, off) + vm_offset_t vaddr; + int off; +{ + vm_offset_t va, va_end; + int sme, sme_end; /* SegMap Entry numbers */ + int *pt; + + pt = (int*)vaddr; /* destination */ + sme = (off >> 6); /* PMEG to start on */ + sme_end = sme + 128; /* where to stop */ + va_end = temp_seg_va + NBSG; + + do { + set_segmap(temp_seg_va, sme); + va = temp_seg_va; + do { + *pt++ = get_pte(va); + va += NBPG; + } while (va < va_end); + sme++; + } while (sme < sme_end); + set_segmap(temp_seg_va, SEGINV); +} + + +/* * Helper functions for changing unloaded PMEGs */ static int temp_seg_inuse; |