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Use su/fubyte instead of directly touching the user's address space.

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This commit is contained in:
David Greenman 1995-03-01 23:59:21 +00:00
parent f919ebde54
commit 1d1b971bec
2 changed files with 8 additions and 16 deletions
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12
sys/amd64/amd64/vm_machdep.c
View File

@ -38,7 +38,7 @@
* *
* from: @(#)vm_machdep.c 7.3 (Berkeley) 5/13/91 * from: @(#)vm_machdep.c 7.3 (Berkeley) 5/13/91
* Utah $Hdr: vm_machdep.c 1.16.1.1 89/06/23$ * Utah $Hdr: vm_machdep.c 1.16.1.1 89/06/23$
* $Id: vm_machdep.c,v 1.31 1995/01/21 15:34:03 bde Exp $ * $Id: vm_machdep.c,v 1.32 1995/02/20 22:23:31 davidg Exp $
*/ */
#include "npx.h" #include "npx.h"
@ -524,14 +524,10 @@ vm_fault_quick( v, prot)
vm_offset_t v; vm_offset_t v;
int prot; int prot;
{ {
if( (cpu_class == CPUCLASS_386) && if (prot & VM_PROT_WRITE)
(prot & VM_PROT_WRITE)) subyte((char *)v, fubyte((char *)v));
vm_fault(&curproc->p_vmspace->vm_map, v,
VM_PROT_READ|VM_PROT_WRITE, FALSE);
else if( prot & VM_PROT_WRITE)
*(volatile char *)v += 0;
else else
*(volatile char *)v; (void) fubyte((char *)v);
} }

12
sys/i386/i386/vm_machdep.c
View File

@ -38,7 +38,7 @@
* *
* from: @(#)vm_machdep.c 7.3 (Berkeley) 5/13/91 * from: @(#)vm_machdep.c 7.3 (Berkeley) 5/13/91
* Utah $Hdr: vm_machdep.c 1.16.1.1 89/06/23$ * Utah $Hdr: vm_machdep.c 1.16.1.1 89/06/23$
* $Id: vm_machdep.c,v 1.31 1995/01/21 15:34:03 bde Exp $ * $Id: vm_machdep.c,v 1.32 1995/02/20 22:23:31 davidg Exp $
*/ */
#include "npx.h" #include "npx.h"
@ -524,14 +524,10 @@ vm_fault_quick( v, prot)
vm_offset_t v; vm_offset_t v;
int prot; int prot;
{ {
if( (cpu_class == CPUCLASS_386) && if (prot & VM_PROT_WRITE)
(prot & VM_PROT_WRITE)) subyte((char *)v, fubyte((char *)v));
vm_fault(&curproc->p_vmspace->vm_map, v,
VM_PROT_READ|VM_PROT_WRITE, FALSE);
else if( prot & VM_PROT_WRITE)
*(volatile char *)v += 0;
else else
*(volatile char *)v; (void) fubyte((char *)v);
} }