mirror/freebsd
1
0
Fork 0
mirror of https://git.FreeBSD.org/src.git synced 2024-12-15 10:17:20 +00:00
Code Issues Releases Activity

Unspam my changes in rev 1.54 that John spammed in rev 1.55.

Browse Source
This commit is contained in:
David Greenman 1996-02-05 14:23:19 +00:00
parent f2b4163c2a
commit f83a01b63f
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=13915
2 changed files with 22 additions and 18 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

20
sys/amd64/amd64/vm_machdep.c
View File

@ -38,7 +38,7 @@
*
* from: @(#)vm_machdep.c 7.3 (Berkeley) 5/13/91
* Utah $Hdr: vm_machdep.c 1.16.1.1 89/06/23$
* $Id: vm_machdep.c,v 1.53 1996/01/30 12:54:21 davidg Exp $
* $Id: vm_machdep.c,v 1.55 1996/02/04 22:09:12 dyson Exp $
*/
#include "npx.h"
@ -562,8 +562,8 @@ int
cpu_fork(p1, p2)
register struct proc *p1, *p2;
{
register struct user *up = p2->p_addr;
int offset;
struct pcb *pcb2 = &p2->p_addr->u_pcb;
int sp, offset;
/*
* Copy pcb and stack from proc p1 to p2.
@ -571,23 +571,25 @@ cpu_fork(p1, p2)
* part of the stack. The stack and pcb need to agree;
* this is tricky, as the final pcb is constructed by savectx,
* but its frame isn't yet on the stack when the stack is copied.
* swtch compensates for this when the child eventually runs.
* This should be done differently, with a single call
* that copies and updates the pcb+stack,
* replacing the bcopy and savectx.
*/
p2->p_addr->u_pcb = p1->p_addr->u_pcb;
offset = mvesp() - (int)kstack;
__asm __volatile("movl %%esp,%0" : "=r" (sp));
offset = sp - (int)kstack;
bcopy((caddr_t)kstack + offset, (caddr_t)p2->p_addr + offset,
(unsigned) ctob(UPAGES) - offset);
p2->p_md.md_regs = p1->p_md.md_regs;
pmap_activate(&p2->p_vmspace->vm_pmap, &up->u_pcb);
*pcb2 = p1->p_addr->u_pcb;
pcb2->pcb_cr3 = vtophys(p2->p_vmspace->vm_pmap.pm_pdir);
/*
* Return (0) in parent, (1) in child.
* Returns (0) in parent, (1) in child.
*/
return (savectx(&up->u_pcb));
return (savectx(pcb2));
}
void

20
sys/i386/i386/vm_machdep.c
View File

@ -38,7 +38,7 @@
*
* from: @(#)vm_machdep.c 7.3 (Berkeley) 5/13/91
* Utah $Hdr: vm_machdep.c 1.16.1.1 89/06/23$
* $Id: vm_machdep.c,v 1.53 1996/01/30 12:54:21 davidg Exp $
* $Id: vm_machdep.c,v 1.55 1996/02/04 22:09:12 dyson Exp $
*/
#include "npx.h"
@ -562,8 +562,8 @@ int
cpu_fork(p1, p2)
register struct proc *p1, *p2;
{
register struct user *up = p2->p_addr;
int offset;
struct pcb *pcb2 = &p2->p_addr->u_pcb;
int sp, offset;
/*
* Copy pcb and stack from proc p1 to p2.
@ -571,23 +571,25 @@ cpu_fork(p1, p2)
* part of the stack. The stack and pcb need to agree;
* this is tricky, as the final pcb is constructed by savectx,
* but its frame isn't yet on the stack when the stack is copied.
* swtch compensates for this when the child eventually runs.
* This should be done differently, with a single call
* that copies and updates the pcb+stack,
* replacing the bcopy and savectx.
*/
p2->p_addr->u_pcb = p1->p_addr->u_pcb;
offset = mvesp() - (int)kstack;
__asm __volatile("movl %%esp,%0" : "=r" (sp));
offset = sp - (int)kstack;
bcopy((caddr_t)kstack + offset, (caddr_t)p2->p_addr + offset,
(unsigned) ctob(UPAGES) - offset);
p2->p_md.md_regs = p1->p_md.md_regs;
pmap_activate(&p2->p_vmspace->vm_pmap, &up->u_pcb);
*pcb2 = p1->p_addr->u_pcb;
pcb2->pcb_cr3 = vtophys(p2->p_vmspace->vm_pmap.pm_pdir);
/*
* Return (0) in parent, (1) in child.
* Returns (0) in parent, (1) in child.
*/
return (savectx(&up->u_pcb));
return (savectx(pcb2));
}
void