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freebsd-dev/sys/i386/include/vm86.h

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A couple of missing doscmd header files. Messed up again. Now can compile the kernel!!! Submitted by: Jonathan Lemon <jlemon@americantv.com>
1997-08-09 04:55:05 +00:00
/*-
sys/i386: further adoption of SPDX licensing ID tags. Mainly focus on files that use BSD 2-Clause license, however the tool I was using misidentified many licenses so this was mostly a manual - error prone - task. The Software Package Data Exchange (SPDX) group provides a specification to make it easier for automated tools to detect and summarize well known opensource licenses. We are gradually adopting the specification, noting that the tags are considered only advisory and do not, in any way, superceed or replace the license texts.
2017-11-27 15:08:52 +00:00
* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
*
A couple of missing doscmd header files. Messed up again. Now can compile the kernel!!! Submitted by: Jonathan Lemon <jlemon@americantv.com>
1997-08-09 04:55:05 +00:00
* 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.
*
$Id$ -> $FreeBSD$
1999-08-28 01:08:13 +00:00
* $FreeBSD$
A couple of missing doscmd header files. Messed up again. Now can compile the kernel!!! Submitted by: Jonathan Lemon <jlemon@americantv.com>
1997-08-09 04:55:05 +00:00
*/
#ifndef _MACHINE_VM86_H_
#define _MACHINE_VM86_H_ 1
/* standard register representation */
typedef union {
Don't pretend to support ix86's with 16-bit ints by using longs just to ensure 32-bit variables. Doing so broke ix86's with 64-bit longs.
1998-09-29 09:06:00 +00:00
u_int r_ex;
A couple of missing doscmd header files. Messed up again. Now can compile the kernel!!! Submitted by: Jonathan Lemon <jlemon@americantv.com>
1997-08-09 04:55:05 +00:00
struct {
u_short r_x;
Fixed pedantic semantics errors (bitfields not of type int, signed int or unsigned int (this doesn't change the struct layout, size or alignment in any of the files changed in this commit, at least for gcc on i386's. Using bitfields of type u_char may affect size and alignment but not packing)).
1998-06-08 09:47:47 +00:00
u_int :16;
A couple of missing doscmd header files. Messed up again. Now can compile the kernel!!! Submitted by: Jonathan Lemon <jlemon@americantv.com>
1997-08-09 04:55:05 +00:00
} r_w;
struct {
u_char r_l;
u_char r_h;
Fixed pedantic semantics errors (bitfields not of type int, signed int or unsigned int (this doesn't change the struct layout, size or alignment in any of the files changed in this commit, at least for gcc on i386's. Using bitfields of type u_char may affect size and alignment but not packing)).
1998-06-08 09:47:47 +00:00
u_int :16;
A couple of missing doscmd header files. Messed up again. Now can compile the kernel!!! Submitted by: Jonathan Lemon <jlemon@americantv.com>
1997-08-09 04:55:05 +00:00
} r_b;
} reg86_t;
/* layout must match definition of struct trapframe_vm86 in <machine/frame.h> */
struct vm86frame {
Enable vmspace sharing on SMP. Major changes are, - %fs register is added to trapframe and saved/restored upon kernel entry/exit. - Per-cpu pages are no longer mapped at the same virtual address. - Each cpu now has a separate gdt selector table. A new segment selector is added to point to per-cpu pages, per-cpu global variables are now accessed through this new selector (%fs). The selectors in gdt table are rearranged for cache line optimization. - fask_vfork is now on as default for both UP and SMP. - Some aio code cleanup. Reviewed by: Alan Cox <alc@cs.rice.edu> John Dyson <dyson@iquest.net> Julian Elischer <julian@whistel.com> Bruce Evans <bde@zeta.org.au> David Greenman <dg@root.com>
1999-04-28 01:04:33 +00:00
int kernel_fs;
Add the ability to make real-mode BIOS calls from the kernel. Currently, everything is contained inside #ifdef VM86, so this option must be present in the config file to use this functionality. Thanks to Tor Egge, these changes should work on SMP machines. However, it may not be throughly SMP-safe. Currently, the only BIOS calls made are memory-sizing routines at bootup, these replace reading the RTC values.
1998-03-23 19:52:59 +00:00
int kernel_es;
int kernel_ds;
A couple of missing doscmd header files. Messed up again. Now can compile the kernel!!! Submitted by: Jonathan Lemon <jlemon@americantv.com>
1997-08-09 04:55:05 +00:00
reg86_t edi;
reg86_t esi;
reg86_t ebp;
reg86_t isp;
reg86_t ebx;
reg86_t edx;
reg86_t ecx;
reg86_t eax;
Add the ability to make real-mode BIOS calls from the kernel. Currently, everything is contained inside #ifdef VM86, so this option must be present in the config file to use this functionality. Thanks to Tor Egge, these changes should work on SMP machines. However, it may not be throughly SMP-safe. Currently, the only BIOS calls made are memory-sizing routines at bootup, these replace reading the RTC values.
1998-03-23 19:52:59 +00:00
int vmf_trapno;
int vmf_err;
A couple of missing doscmd header files. Messed up again. Now can compile the kernel!!! Submitted by: Jonathan Lemon <jlemon@americantv.com>
1997-08-09 04:55:05 +00:00
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;
Add the ability to make real-mode BIOS calls from the kernel. Currently, everything is contained inside #ifdef VM86, so this option must be present in the config file to use this functionality. Thanks to Tor Egge, these changes should work on SMP machines. However, it may not be throughly SMP-safe. Currently, the only BIOS calls made are memory-sizing routines at bootup, these replace reading the RTC values.
1998-03-23 19:52:59 +00:00
#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
Add missing register name defines.
1998-07-14 17:13:23 +00:00
#define vmf_bh ebx.r_b.r_h
#define vmf_bl ebx.r_b.r_l
Add the ability to make real-mode BIOS calls from the kernel. Currently, everything is contained inside #ifdef VM86, so this option must be present in the config file to use this functionality. Thanks to Tor Egge, these changes should work on SMP machines. However, it may not be throughly SMP-safe. Currently, the only BIOS calls made are memory-sizing routines at bootup, these replace reading the RTC values.
1998-03-23 19:52:59 +00:00
#define vmf_bx ebx.r_w.r_x
#define vmf_ebx ebx.r_ex
Add missing register name defines.
1998-07-14 17:13:23 +00:00
#define vmf_ch ecx.r_b.r_h
#define vmf_cl ecx.r_b.r_l
Add the ability to make real-mode BIOS calls from the kernel. Currently, everything is contained inside #ifdef VM86, so this option must be present in the config file to use this functionality. Thanks to Tor Egge, these changes should work on SMP machines. However, it may not be throughly SMP-safe. Currently, the only BIOS calls made are memory-sizing routines at bootup, these replace reading the RTC values.
1998-03-23 19:52:59 +00:00
#define vmf_cx ecx.r_w.r_x
#define vmf_ecx ecx.r_ex
Add missing register name defines.
1998-07-14 17:13:23 +00:00
#define vmf_dh edx.r_b.r_h
#define vmf_dl edx.r_b.r_l
Add the ability to make real-mode BIOS calls from the kernel. Currently, everything is contained inside #ifdef VM86, so this option must be present in the config file to use this functionality. Thanks to Tor Egge, these changes should work on SMP machines. However, it may not be throughly SMP-safe. Currently, the only BIOS calls made are memory-sizing routines at bootup, these replace reading the RTC values.
1998-03-23 19:52:59 +00:00
#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
A couple of missing doscmd header files. Messed up again. Now can compile the kernel!!! Submitted by: Jonathan Lemon <jlemon@americantv.com>
1997-08-09 04:55:05 +00:00
#define vmf_cs cs.r_w.r_x
Add the ability to make real-mode BIOS calls from the kernel. Currently, everything is contained inside #ifdef VM86, so this option must be present in the config file to use this functionality. Thanks to Tor Egge, these changes should work on SMP machines. However, it may not be throughly SMP-safe. Currently, the only BIOS calls made are memory-sizing routines at bootup, these replace reading the RTC values.
1998-03-23 19:52:59 +00:00
#define vmf_ds ds.r_w.r_x
#define vmf_es es.r_w.r_x
A couple of missing doscmd header files. Messed up again. Now can compile the kernel!!! Submitted by: Jonathan Lemon <jlemon@americantv.com>
1997-08-09 04:55:05 +00:00
#define vmf_ss ss.r_w.r_x
Implement a simple native VM86 backend for X86BIOS. Now i386 uses native VM86 calls instead of the real mode emulator as a backend. VM86 has been proven reliable for very long time and it is actually few times faster than emulation. Increase maximum number of page table entries per VM86 context from 3 to 8 pages. It was (ridiculously) low and insufficient for new VM86 backend, which shares one context globally. Slighly rearrange and clean up the emulator backend to accommodate new code. The only visible change here is stack size, which is decreased from 64K to 4K bytes to sync. with VM86. Actually, it seems there is no need for big stack in real mode. MFC after: 1 month
2010-08-05 18:48:30 +00:00
#define vmf_bp ebp.r_w.r_x
A couple of missing doscmd header files. Messed up again. Now can compile the kernel!!! Submitted by: Jonathan Lemon <jlemon@americantv.com>
1997-08-09 04:55:05 +00:00
#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
};
Increase maximum number of page table entries per VM86 context from 8 to 24 pages, yet again. Now we can allocate a whole segment, which is required for shadowing option ROM images, for example.
2010-08-25 21:13:23 +00:00
#define VM86_PMAPSIZE 24
Change the vm86_datacall interface so that callers are now responsible for passing in their own data space and associated page table information. Update the support files so that any pages in the vm86 page table are mapped, rather than just one page. Restore the E820 memory probe, and have it use the new interface.
1999-03-18 04:37:35 +00:00
#define VMAP_MALLOC 1 /* page was malloced by us */
struct vm86context {
int npages;
struct vm86pmap {
int flags;
int pte_num;
vm_offset_t kva;
i386: Merge PAE and non-PAE pmaps into same kernel. Effectively all i386 kernels now have two pmaps compiled in: one managing PAE pagetables, and another non-PAE. The implementation is selected at cold time depending on the CPU features. The vm_paddr_t is always 64bit now. As result, nx bit can be used on all capable CPUs. Option PAE only affects the bus_addr_t: it is still 32bit for non-PAE configs, for drivers compatibility. Kernel layout, esp. max kernel address, low memory PDEs and max user address (same as trampoline start) are now same for PAE and for non-PAE regardless of the type of page tables used. Non-PAE kernel (when using PAE pagetables) can handle physical memory up to 24G now, larger memory requires re-tuning the KVA consumers and instead the code caps the maximum at 24G. Unfortunately, a lot of drivers do not use busdma(9) properly so by default even 4G barrier is not easy. There are two tunables added: hw.above4g_allow and hw.above24g_allow, the first one is kept enabled for now to evaluate the status on HEAD, second is only for dev use. i386 now creates three freelists if there is any memory above 4G, to allow proper bounce pages allocation. Also, VM_KMEM_SIZE_SCALE changed from 3 to 1. The PAE_TABLES kernel config option is retired. In collaboarion with: pho Discussed with: emaste Reviewed by: markj MFC after: 2 weeks Sponsored by: The FreeBSD Foundation Differential revision: https://reviews.freebsd.org/D18894
2019-01-30 02:07:13 +00:00
uint64_t old_pte;
Change the vm86_datacall interface so that callers are now responsible for passing in their own data space and associated page table information. Update the support files so that any pages in the vm86 page table are mapped, rather than just one page. Restore the E820 memory probe, and have it use the new interface.
1999-03-18 04:37:35 +00:00
} pmap[VM86_PMAPSIZE];
};
x86: Allow users to change PSL_RF via ptrace(PT_SETREGS...) Debuggers may need to change PSL_RF. Note that tf_eflags is already stored in the signal context during signal handling and PSL_RF previously could be modified via sigreturn, so this change should not provide any new ability to userspace. For background see the thread at: http://lists.freebsd.org/pipermail/freebsd-i386/2007-September/005910.html Reviewed by: jhb, kib Sponsored by: DARPA, AFRL
2013-11-14 15:37:20 +00:00
#define VM_USERCHANGE (PSL_USERCHANGE)
Add the ability to make real-mode BIOS calls from the kernel. Currently, everything is contained inside #ifdef VM86, so this option must be present in the config file to use this functionality. Thanks to Tor Egge, these changes should work on SMP machines. However, it may not be throughly SMP-safe. Currently, the only BIOS calls made are memory-sizing routines at bootup, these replace reading the RTC values.
1998-03-23 19:52:59 +00:00
#define VME_USERCHANGE (VM_USERCHANGE | PSL_VIP | PSL_VIF)
struct vm86_kernel {
caddr_t vm86_intmap; /* interrupt map */
Don't pretend to support ix86's with 16-bit ints by using longs just to ensure 32-bit variables. Doing so broke ix86's with 64-bit longs.
1998-09-29 09:06:00 +00:00
u_int vm86_eflags; /* emulated flags */
Add the ability to make real-mode BIOS calls from the kernel. Currently, everything is contained inside #ifdef VM86, so this option must be present in the config file to use this functionality. Thanks to Tor Egge, these changes should work on SMP machines. However, it may not be throughly SMP-safe. Currently, the only BIOS calls made are memory-sizing routines at bootup, these replace reading the RTC values.
1998-03-23 19:52:59 +00:00
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;
};
Fixed a missing proc -> thread substitution. Broke future detection of this bug in userland by not declaring kernel prototypes in userland.
2001-10-03 17:23:26 +00:00
#ifdef _KERNEL
Unifdef VM86. Reviewed by: silence on on -current
1999-06-01 18:20:36 +00:00
extern int vm86paddr;
Add the ability to make real-mode BIOS calls from the kernel. Currently, everything is contained inside #ifdef VM86, so this option must be present in the config file to use this functionality. Thanks to Tor Egge, these changes should work on SMP machines. However, it may not be throughly SMP-safe. Currently, the only BIOS calls made are memory-sizing routines at bootup, these replace reading the RTC values.
1998-03-23 19:52:59 +00:00
Fixed a missing proc -> thread substitution. Broke future detection of this bug in userland by not declaring kernel prototypes in userland.
2001-10-03 17:23:26 +00:00
struct thread;
Remove __P.
2002-03-20 05:48:58 +00:00
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);
Fixed a missing proc -> thread substitution. Broke future detection of this bug in userland by not declaring kernel prototypes in userland.
2001-10-03 17:23:26 +00:00
#endif /* _KERNEL */
A couple of missing doscmd header files. Messed up again. Now can compile the kernel!!! Submitted by: Jonathan Lemon <jlemon@americantv.com>
1997-08-09 04:55:05 +00:00
#endif /* _MACHINE_VM86_H_ */
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