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/*-
* SPDX-License-Identifier: BSD-2-Clause
*
* Copyright (c) 1997 Jonathan Lemon
* All rights reserved.
*
* Derived from register.h, which is
* Copyright (c) 1996 Michael Smith. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#ifndef _MACHINE_VM86_H_
#define _MACHINE_VM86_H_ 1
/* standard register representation */
typedef union {
u_int r_ex;
struct {
u_short r_x;
u_int :16;
} r_w;
struct {
u_char r_l;
u_char r_h;
u_int :16;
} r_b;
} reg86_t;
/* layout must match definition of struct trapframe_vm86 in <machine/frame.h> */
struct vm86frame {
int kernel_fs;
int kernel_es;
int kernel_ds;
reg86_t edi;
reg86_t esi;
reg86_t ebp;
reg86_t isp;
reg86_t ebx;
reg86_t edx;
reg86_t ecx;
reg86_t eax;
int vmf_trapno;
int vmf_err;
reg86_t eip;
reg86_t cs;
reg86_t eflags;
reg86_t esp;
reg86_t ss;
reg86_t es;
reg86_t ds;
reg86_t fs;
reg86_t gs;
#define vmf_ah eax.r_b.r_h
#define vmf_al eax.r_b.r_l
#define vmf_ax eax.r_w.r_x
#define vmf_eax eax.r_ex
#define vmf_bh ebx.r_b.r_h
#define vmf_bl ebx.r_b.r_l
#define vmf_bx ebx.r_w.r_x
#define vmf_ebx ebx.r_ex
#define vmf_ch ecx.r_b.r_h
#define vmf_cl ecx.r_b.r_l
#define vmf_cx ecx.r_w.r_x
#define vmf_ecx ecx.r_ex
#define vmf_dh edx.r_b.r_h
#define vmf_dl edx.r_b.r_l
#define vmf_dx edx.r_w.r_x
#define vmf_edx edx.r_ex
#define vmf_si esi.r_w.r_x
#define vmf_di edi.r_w.r_x
#define vmf_cs cs.r_w.r_x
#define vmf_ds ds.r_w.r_x
#define vmf_es es.r_w.r_x
#define vmf_ss ss.r_w.r_x
#define vmf_bp ebp.r_w.r_x
#define vmf_sp esp.r_w.r_x
#define vmf_ip eip.r_w.r_x
#define vmf_flags eflags.r_w.r_x
#define vmf_eflags eflags.r_ex
};
#define VM86_PMAPSIZE 24
#define VMAP_MALLOC 1 /* page was malloced by us */
struct vm86context {
int npages;
struct vm86pmap {
int flags;
int pte_num;
vm_offset_t kva;
uint64_t old_pte;
} pmap[VM86_PMAPSIZE];
};
#define VM_USERCHANGE (PSL_USERCHANGE)
#define VME_USERCHANGE (VM_USERCHANGE | PSL_VIP | PSL_VIF)
struct vm86_kernel {
caddr_t vm86_intmap; /* interrupt map */
u_int vm86_eflags; /* emulated flags */
int vm86_has_vme; /* VME support */
int vm86_inited; /* we were initialized */
int vm86_debug;
caddr_t vm86_sproc; /* address of sproc */
};
#define VM86_INIT 1
#define VM86_SET_VME 2
#define VM86_GET_VME 3
#define VM86_INTCALL 4
struct vm86_init_args {
int debug; /* debug flag */
int cpu_type; /* cpu type to emulate */
u_char int_map[32]; /* interrupt map */
};
struct vm86_vme_args {
int state; /* status */
};
struct vm86_intcall_args {
int intnum;
struct vm86frame vmf;
};
#ifdef _KERNEL
extern int vm86paddr;
struct thread;
extern int vm86_emulate(struct vm86frame *);
extern int vm86_sysarch(struct thread *, char *);
extern void vm86_trap(struct vm86frame *);
extern int vm86_intcall(int, struct vm86frame *);
extern int vm86_datacall(int, struct vm86frame *, struct vm86context *);
extern void vm86_initialize(void);
extern vm_offset_t vm86_getpage(struct vm86context *, int);
extern vm_offset_t vm86_addpage(struct vm86context *, int, vm_offset_t);
extern int vm86_getptr(struct vm86context *, vm_offset_t, u_short *, u_short *);
extern vm_offset_t vm86_getaddr(struct vm86context *, u_short, u_short);
#endif /* _KERNEL */
#endif /* _MACHINE_VM86_H_ */
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