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Some minor cleanup, mostly from magnum branch.

This commit is contained in:
mycroft 1994-01-11 15:11:36 +00:00
parent 2f414f2686
commit ad116f4438
1 changed files with 22 additions and 21 deletions
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43
sys/arch/i386/i386/vm_machdep.c
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@ -43,8 +43,6 @@
* Utah $Hdr: vm_machdep.c 1.16.1.1 89/06/23$
*/
#include "npx.h"
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/proc.h>
@ -58,6 +56,8 @@
#include <machine/cpu.h>
#include <machine/cpufunc.h>
#include "npx.h"
/*
* Finish a fork operation, with process p2 nearly set up.
* Copy and update the kernel stack and pcb, making the child
@ -96,16 +96,16 @@ cpu_fork(p1, p2)
* Wire top of address space of child to it's kstack.
* First, fault in a page of pte's to map it.
*/
addr = trunc_page((u_int)vtopte(kstack));
addr = trunc_page((u_int)vtopte(kstack));
vm_map_pageable(&p2->p_vmspace->vm_map, addr, addr+NBPG, FALSE);
for (i=0; i < UPAGES; i++)
pmap_enter(&p2->p_vmspace->vm_pmap, kstack+i*NBPG,
pmap_extract(kernel_pmap, ((int)p2->p_addr)+i*NBPG),
VM_PROT_READ | VM_PROT_WRITE, /* must be writable for
for (i = 0; i < UPAGES; i++)
pmap_enter(&p2->p_vmspace->vm_pmap, kstack + i * NBPG,
pmap_extract(kernel_pmap, ((int)p2->p_addr) + i * NBPG),
VM_PROT_READ | VM_PROT_WRITE, /* must be writable for
* i486 WP support;
* i386 doesn't care
*/
TRUE);
TRUE);
pmap_activate(&p2->p_vmspace->vm_pmap, &up->u_pcb);
@ -156,8 +156,8 @@ cpu_exit(p)
/* drop per-process resources */
vmspace_free(p->p_vmspace);
kmem_free(kernel_map, (vm_offset_t)p->p_addr, ctob(UPAGES));
p->p_addr = (struct user *) &nullpcb;
splclock();
swtch();
/* NOTREACHED */
@ -167,16 +167,16 @@ void
cpu_exit(p)
register struct proc *p;
{
extern int _default_ldt, currentldt;
extern int _default_ldt, currentldt;
#if NNPX > 0
npxexit(p);
#endif
#ifdef USER_LDT
if (((struct pcb *)p->p_addr)->pcb_ldt && (currentldt != _default_ldt)) {
lldt(_default_ldt);
currentldt = _default_ldt;
}
if (p->p_addr->u_pcb.pcb_ldt && (currentldt != _default_ldt)) {
lldt(_default_ldt);
currentldt = _default_ldt;
}
#endif
splclock();
swtch();
@ -187,16 +187,16 @@ void
cpu_wait(p)
struct proc *p;
{
struct pcb *pcb = (struct pcb *)p->p_addr;
struct pcb *pcb = &p->p_addr->u_pcb;
/* drop per-process resources */
vmspace_free(p->p_vmspace);
#ifdef USER_LDT
if (pcb->pcb_ldt) {
kmem_free(kernel_map, (vm_offset_t)pcb->pcb_ldt,
(pcb->pcb_ldt_len * sizeof(union descriptor)));
pcb->pcb_ldt = NULL;
}
if (pcb->pcb_ldt) {
kmem_free(kernel_map, (vm_offset_t)pcb->pcb_ldt,
(pcb->pcb_ldt_len * sizeof(union descriptor)));
pcb->pcb_ldt = NULL;
}
#endif
kmem_free(kernel_map, (vm_offset_t)p->p_addr, ctob(UPAGES));
}
@ -428,5 +428,6 @@ cpu_reset() {
/* "good night, sweet prince .... <THUNK!>" */
tlbflush();
/* NOTREACHED */
/* just in case */
for (;;);
}