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Use the flag mask in a somewhat more sane fashion.

This commit is contained in:
mycroft 1996-04-12 05:57:43 +00:00
parent eb4de32615
commit 035e9c211e
2 changed files with 23 additions and 19 deletions
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30
sys/arch/i386/i386/vm86.c
View File

@ -1,4 +1,4 @@
/* $NetBSD: vm86.c,v 1.8 1996/04/11 10:07:17 mycroft Exp $ */
/* $NetBSD: vm86.c,v 1.9 1996/04/12 05:57:43 mycroft Exp $ */
/*-
* Copyright (c) 1996 The NetBSD Foundation, Inc.
@ -382,10 +382,11 @@ i386_vm86(p, args, retval)
struct trapframe *tf = p->p_md.md_regs;
struct pcb *pcb = &p->p_addr->u_pcb;
struct vm86_kern vm86s;
int err;
int error;
if (err = copyin(args, &vm86s, sizeof(vm86s)))
return err;
error = copyin(args, &vm86s, sizeof(vm86s));
if (error)
return (error);
pcb->vm86_userp = (void *)args;
@ -397,18 +398,19 @@ i386_vm86(p, args, retval)
case VCPU_086:
case VCPU_186:
case VCPU_286:
pcb->vm86_flagmask = 0;
break;
case VCPU_386:
pcb->vm86_flagmask = PSL_NT|PSL_IOPL;
break;
case VCPU_486:
pcb->vm86_flagmask = PSL_AC|PSL_NT|PSL_IOPL;
break;
case VCPU_586:
default:
pcb->vm86_flagmask = PSL_ID|PSL_AC|PSL_NT|PSL_IOPL;
break;
case VCPU_386:
pcb->vm86_flagmask = PSL_ID|PSL_AC;
break;
case VCPU_486:
pcb->vm86_flagmask = PSL_ID;
break;
case VCPU_586:
pcb->vm86_flagmask = 0;
break;
default:
return (EINVAL);
}
#define DOVREG(reg) tf->tf_vm86_##reg = (u_short) vm86s.regs.vmsc.sc_##reg

12
sys/arch/i386/include/vm86.h
View File

@ -1,4 +1,4 @@
/* $NetBSD: vm86.h,v 1.4 1996/04/11 10:07:25 mycroft Exp $ */
/* $NetBSD: vm86.h,v 1.5 1996/04/12 05:57:45 mycroft Exp $ */
#define VM86_USE_VIF
@ -123,7 +123,8 @@ set_vflags(p, flags)
struct trapframe *tf = p->p_md.md_regs;
struct pcb *pcb = &p->p_addr->u_pcb;
SETFLAGS(pcb->vm86_eflags, flags, pcb->vm86_flagmask | ~VM86_GETDIRECT);
flags &= ~pcb->vm86_flagmask;
SETFLAGS(pcb->vm86_eflags, flags, ~VM86_GETDIRECT);
SETFLAGS(tf->tf_eflags, flags, VM86_SETDIRECT);
#ifndef VM86_USE_VIF
if ((pcb->vm86_eflags & (PSL_I|PSL_VIP)) == (PSL_I|PSL_VIP))
@ -141,7 +142,7 @@ get_vflags(p)
struct pcb *pcb = &p->p_addr->u_pcb;
int flags = 0;
SETFLAGS(flags, pcb->vm86_eflags, pcb->vm86_flagmask | ~VM86_GETDIRECT);
SETFLAGS(flags, pcb->vm86_eflags, ~VM86_GETDIRECT);
SETFLAGS(flags, tf->tf_eflags, VM86_GETDIRECT);
return (flags);
}
@ -154,7 +155,8 @@ set_vflags_short(p, flags)
struct trapframe *tf = p->p_md.md_regs;
struct pcb *pcb = &p->p_addr->u_pcb;
SETFLAGS(pcb->vm86_eflags, flags, (pcb->vm86_flagmask | ~VM86_GETDIRECT) & 0xffff);
flags &= ~pcb->vm86_flagmask;
SETFLAGS(pcb->vm86_eflags, flags, ~VM86_GETDIRECT & 0xffff);
SETFLAGS(tf->tf_eflags, flags, VM86_SETDIRECT & 0xffff);
#ifndef VM86_USE_VIF
if ((pcb->vm86_eflags & (PSL_I|PSL_VIP)) == (PSL_I|PSL_VIP))
@ -170,7 +172,7 @@ get_vflags_short(p)
struct pcb *pcb = &p->p_addr->u_pcb;
int flags = 0;
SETFLAGS(flags, pcb->vm86_eflags, (pcb->vm86_flagmask | ~VM86_GETDIRECT) & 0xffff);
SETFLAGS(flags, pcb->vm86_eflags, ~VM86_GETDIRECT & 0xffff);
SETFLAGS(flags, tf->tf_eflags, VM86_GETDIRECT & 0xffff);
return (flags);
}