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Bug fix: Must have user readability of kernel text on Microvax 

even when using DDB.
This commit is contained in:
ragge 1995-08-21 03:27:05 +00:00
parent ed3c38b4cd
commit 172fd72aab
1 changed files with 7 additions and 3 deletions
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10
sys/arch/vax/vax/pmap.c
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@ -1,4 +1,4 @@
/* $NetBSD: pmap.c,v 1.15 1995/07/05 08:36:37 ragge Exp $ */ /* $NetBSD: pmap.c,v 1.16 1995/08/21 03:27:05 ragge Exp $ */
#define DEBUG #define DEBUG
/* /*
* Copyright (c) 1994 Ludd, University of Lule}, Sweden. * Copyright (c) 1994 Ludd, University of Lule}, Sweden.
@ -66,7 +66,7 @@ static int prot_array[]={ PG_NONE, PG_RO, PG_RW, PG_RW,
PG_RO, PG_RO, PG_RW, PG_RW }; PG_RO, PG_RO, PG_RW, PG_RW };
static int kernel_prot[]={ PG_NONE, PG_KR, PG_KW, PG_KW, static int kernel_prot[]={ PG_NONE, PG_KR, PG_KW, PG_KW,
PG_RO,PG_KR,PG_KW,PG_KW}; PG_RO,PG_KR,PG_KW,PG_URKW};
static pv_entry_t pv_head =NULL; static pv_entry_t pv_head =NULL;
static unsigned int pv_count=0; static unsigned int pv_count=0;
@ -125,6 +125,10 @@ pmap_bootstrap()
if (cpu_type == VAX_630) if (cpu_type == VAX_630)
pend -= 8 * NBPG; /* Avoid console scratchpad */ pend -= 8 * NBPG; /* Avoid console scratchpad */
#endif #endif
#if VAX650
if (cpu_type == VAX_650)
pend -= 64 * NBPG;
#endif
/* These are virt only */ /* These are virt only */
vmmap = ROUND_PAGE(pv_table + (pend / PAGE_SIZE)); vmmap = ROUND_PAGE(pv_table + (pend / PAGE_SIZE));
(u_int)Numem = vmmap + NBPG * 2; (u_int)Numem = vmmap + NBPG * 2;
@ -154,7 +158,7 @@ pmap_bootstrap()
pmap_map(0x80000000,0,2*NBPG,VM_PROT_READ|VM_PROT_WRITE); pmap_map(0x80000000,0,2*NBPG,VM_PROT_READ|VM_PROT_WRITE);
#ifdef DDB #ifdef DDB
pmap_map(0x80000400,2*NBPG,(vm_offset_t)(&etext), pmap_map(0x80000400,2*NBPG,(vm_offset_t)(&etext),
VM_PROT_READ|VM_PROT_WRITE); VM_PROT_READ|VM_PROT_WRITE|VM_PROT_EXECUTE);
#else #else
pmap_map(0x80000400,2*NBPG,(vm_offset_t)(&etext),VM_PROT_EXECUTE); pmap_map(0x80000400,2*NBPG,(vm_offset_t)(&etext),VM_PROT_EXECUTE);
#endif #endif