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

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Add and move declarations to fix all of the warnings from `gcc -Wimplicit' (except in netccitt, netiso and netns) and most of the warnings from `gcc -Wnested-externs'. Fix all the bugs found. There were no serious ones.
1995-03-16 18:17:34 +00:00
/*-
* Copyright (c) 1995 Bruce D. Evans.
* 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.
* 3. Neither the name of the author nor the names of contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* 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
* $FreeBSD$
Add and move declarations to fix all of the warnings from `gcc -Wimplicit' (except in netccitt, netiso and netns) and most of the warnings from `gcc -Wnested-externs'. Fix all the bugs found. There were no serious ones.
1995-03-16 18:17:34 +00:00
*/
#ifndef _MACHINE_MD_VAR_H_
#define _MACHINE_MD_VAR_H_
/*
* Miscellaneous machine-dependent declarations.
*/
extern int Maxmem;
Moved declarations of non-cpu things from <machine/cpufunc.h> to better places.
1996-07-01 18:12:24 +00:00
extern u_int atdevbase; /* offset in virtual memory of ISA io mem */
Moved declarations related to copying and zeroing to the right place.
1999-01-08 16:29:59 +00:00
extern void (*bcopy_vector) __P((const void *from, void *to, size_t len));
Fixed disordering of busdma* and swi_vm.
1998-02-01 23:00:53 +00:00
extern int busdma_swi_pending;
Moved declarations related to copying and zeroing to the right place.
1999-01-08 16:29:59 +00:00
extern int (*copyin_vector) __P((const void *udaddr, void *kaddr,
size_t len));
extern int (*copyout_vector) __P((const void *kaddr, void *udaddr,
size_t len));
Don't pretend to support ix86's with 16-bit ints by using longs just to ensure 32-bit variables. Doing so mainly bogotified some printf formats. Fixed disorder in md_var.h.
1998-07-11 05:59:35 +00:00
extern u_int cpu_feature;
extern u_int cpu_high;
extern u_int cpu_id;
Activate SSE/SIMD. This is the extra context switching support that we are required to do if we let user processes use the extra 128 bit registers etc. This is the base part of the diff I got from: http://www.issei.org/issei/FreeBSD/sse.html I believe this is by: Mr. SUZUKI Issei <issei@issei.org> SMP support apparently by: Takekazu KATO <kato@chino.it.okayama-u.ac.jp> Test code by: NAKAMURA Kazushi <kaz@kobe1995.net>, see http://kobe1995.net/~kaz/FreeBSD/SSE.en.html I have fixed a couple of style(9) deviations. I have some followup commits to fix a couple of non-style things.
2001-07-12 06:32:51 +00:00
extern u_int cpu_fxsr;
Add and move declarations to fix all of the warnings from `gcc -Wimplicit' (except in netccitt, netiso and netns) and most of the warnings from `gcc -Wnested-externs'. Fix all the bugs found. There were no serious ones.
1995-03-16 18:17:34 +00:00
extern char cpu_vendor[];
Don't pretend to support ix86's with 16-bit ints by using longs just to ensure 32-bit variables. Doing so mainly bogotified some printf formats. Fixed disorder in md_var.h.
1998-07-11 05:59:35 +00:00
extern u_int cyrix_did;
Add and move declarations to fix all of the warnings from `gcc -Wimplicit' (except in netccitt, netiso and netns) and most of the warnings from `gcc -Wnested-externs'. Fix all the bugs found. There were no serious ones.
1995-03-16 18:17:34 +00:00
extern char kstack[];
Don't pretend to support ix86's with 16-bit ints by using longs just to ensure 32-bit variables. Doing so mainly bogotified some printf formats. Fixed disorder in md_var.h.
1998-07-11 05:59:35 +00:00
#ifdef PC98
extern int need_pre_dma_flush;
extern int need_post_dma_flush;
#endif
Add and move declarations to fix all of the warnings from `gcc -Wimplicit' (except in netccitt, netiso and netns) and most of the warnings from `gcc -Wnested-externs'. Fix all the bugs found. There were no serious ones.
1995-03-16 18:17:34 +00:00
extern int nfs_diskless_valid;
Moved declarations related to copying and zeroing to the right place.
1999-01-08 16:29:59 +00:00
extern void (*ovbcopy_vector) __P((const void *from, void *to, size_t len));
Mega-commit for Linux emulator update.. This has been stress tested under netscape-2.0 for Linux running all the Java stuff. The scrollbars are now working, at least on my machine. (whew! :-) I'm uncomfortable with the size of this commit, but it's too inter-dependant to easily seperate out. The main changes: COMPAT_LINUX is *GONE*. Most of the code has been moved out of the i386 machine dependent section into the linux emulator itself. The int 0x80 syscall code was almost identical to the lcall 7,0 code and a minor tweak allows them to both be used with the same C code. All kernels can now just modload the lkm and it'll DTRT without having to rebuild the kernel first. Like IBCS2, you can statically compile it in with "options LINUX". A pile of new syscalls implemented, including getdents(), llseek(), readv(), writev(), msync(), personality(). The Linux-ELF libraries want to use some of these. linux_select() now obeys Linux semantics, ie: returns the time remaining of the timeout value rather than leaving it the original value. Quite a few bugs removed, including incorrect arguments being used in syscalls.. eg: mixups between passing the sigset as an int, vs passing it as a pointer and doing a copyin(), missing return values, unhandled cases, SIOC* ioctls, etc. The build for the code has changed. i386/conf/files now knows how to build linux_genassym and generate linux_assym.h on the fly. Supporting changes elsewhere in the kernel: The user-mode signal trampoline has moved from the U area to immediately below the top of the stack (below PS_STRINGS). This allows the different binary emulations to have their own signal trampoline code (which gets rid of the hardwired syscall 103 (sigreturn on BSD, syslog on Linux)) and so that the emulator can provide the exact "struct sigcontext *" argument to the program's signal handlers. The sigstack's "ss_flags" now uses SS_DISABLE and SS_ONSTACK flags, which have the same values as the re-used SA_DISABLE and SA_ONSTACK which are intended for sigaction only. This enables the support of a SA_RESETHAND flag to sigaction to implement the gross SYSV and Linux SA_ONESHOT signal semantics where the signal handler is reset when it's triggered. makesyscalls.sh no longer appends the struct sysentvec on the end of the generated init_sysent.c code. It's a lot saner to have it in a seperate file rather than trying to update the structure inside the awk script. :-) At exec time, the dozen bytes or so of signal trampoline code are copied to the top of the user's stack, rather than obtaining the trampoline code the old way by getting a clone of the parent's user area. This allows Linux and native binaries to freely exec each other without getting trampolines mixed up.
1996-03-02 19:38:20 +00:00
extern char sigcode[];
oszsigcode -> szosigcode Pointed out by: bde
1999-12-04 10:53:39 +00:00
extern int szsigcode, szosigcode;
Add and move declarations to fix all of the warnings from `gcc -Wimplicit' (except in netccitt, netiso and netns) and most of the warnings from `gcc -Wnested-externs'. Fix all the bugs found. There were no serious ones.
1995-03-16 18:17:34 +00:00
Moved declarations of non-cpu things from <machine/cpufunc.h> to better places.
1996-07-01 18:12:24 +00:00
typedef void alias_for_inthand_t __P((u_int cs, u_int ef, u_int esp, u_int ss));
KSE Milestone 2 Note ALL MODULES MUST BE RECOMPILED make the kernel aware that there are smaller units of scheduling than the process. (but only allow one thread per process at this time). This is functionally equivalent to teh previousl -current except that there is a thread associated with each process. Sorry john! (your next MFC will be a doosie!) Reviewed by: peter@freebsd.org, dillon@freebsd.org X-MFC after: ha ha ha ha
2001-09-12 08:38:13 +00:00
struct thread;
Add and move declarations to fix all of the warnings from `gcc -Wimplicit' (except in netccitt, netiso and netns) and most of the warnings from `gcc -Wnested-externs'. Fix all the bugs found. There were no serious ones.
1995-03-16 18:17:34 +00:00
struct reg;
Add new functions fill_fpregs() and set_fpregs(), like fill_regs() and set_regs() but for the floating point register state. The code is stolen from procfs_machdep.c, and moved out of there into machdep.c. These functions are needed for generating ELF core dumps.
1998-09-14 22:43:40 +00:00
struct fpreg;
Implement support for hardware debug registers on the i386. Submitted by: Brian Dean <brdean@unx.sas.com>
1999-07-09 04:16:00 +00:00
struct dbreg;
Add and move declarations to fix all of the warnings from `gcc -Wimplicit' (except in netccitt, netiso and netns) and most of the warnings from `gcc -Wnested-externs'. Fix all the bugs found. There were no serious ones.
1995-03-16 18:17:34 +00:00
Moved declarations of non-cpu things from <machine/cpufunc.h> to better places.
1996-07-01 18:12:24 +00:00
void bcopyb __P((const void *from, void *to, size_t len));
Fixed disordering of busdma* and swi_vm.
1998-02-01 23:00:53 +00:00
void busdma_swi __P((void));
Further improved version of hadling a HALT when there is no console.
1996-10-31 00:57:28 +00:00
void cpu_halt __P((void));
Don't pretend to support ix86's with 16-bit ints by using longs just to ensure 32-bit variables. Doing so mainly bogotified some printf formats. Fixed disorder in md_var.h.
1998-07-11 05:59:35 +00:00
void cpu_reset __P((void));
Clean up some low level bootstrap code: - stop using the evil 'struct trapframe' argument for mi_startup() (formerly main()). There are much better ways of doing it. - do not use prepare_usermode() - setregs() in execve() will do it all for us as long as the p_md.md_regs pointer is set. (which is now done in machdep.c rather than init_main.c. The Alpha port did it this way all along and is much cleaner). - collect all the magic %cr0 etc register settings into one place and have the AP's call that instead of using magic numbers (!!) that keep changing over and over again. - Make it safe to call kthread_create() earlier, including during the device probe sequence. It doesn't need the callback mechanism that NetBSD's version uses. - kthreads created this way are root-less as they exist before the root filesystem is mounted. init(1) is set up so that it aquires the root pointers prior to running. If other kthreads want filesystem acccess we can make this code more generic. - set all threads start times once we have decided what time it is. - init uses a trampoline rather than the evil prepare_usermode() hack. - kern_descrip.c has a couple of tweaks to deal with forking when there is no rootdir or cwd etc. - adjust the early SYSINIT() sequence so that a few prereqisites are in place. eg: make sure the run queue is initialized before doing forks. With this, the USB code can easily create a kthread to do the device tree discovery. (I have tested it, it works nicely). There are still some open issues before this is truely useful. - tsleep() does not like working before the clock is running. It sort-of tries to spin wait, but it can do more useful things now. - stopping a kthread in kld code at unload time is "interesting" but we have a solution for that. The Alpha code needs no changes for this. It already uses pretty much the same strategies, but a little cleaner.
2000-08-11 09:05:12 +00:00
void cpu_setregs __P((void));
Preserve %fs and %gs across context switches. This has a relatively low cost since it is only done in cpu_switch(), not for every exception. The extra state is kept in the pcb, and handled much like the npx state, with similar deficiencies (the state is not preserved across signal handlers, and error handling loses state).
1997-06-07 04:36:10 +00:00
void cpu_switch_load_gs __P((void)) __asm(__STRING(cpu_switch_load_gs));
Add and move declarations to fix all of the warnings from `gcc -Wimplicit' (except in netccitt, netiso and netns) and most of the warnings from `gcc -Wnested-externs'. Fix all the bugs found. There were no serious ones.
1995-03-16 18:17:34 +00:00
void doreti_iret __P((void)) __asm(__STRING(doreti_iret));
void doreti_iret_fault __P((void)) __asm(__STRING(doreti_iret_fault));
void doreti_popl_ds __P((void)) __asm(__STRING(doreti_popl_ds));
void doreti_popl_ds_fault __P((void)) __asm(__STRING(doreti_popl_ds_fault));
void doreti_popl_es __P((void)) __asm(__STRING(doreti_popl_es));
void doreti_popl_es_fault __P((void)) __asm(__STRING(doreti_popl_es_fault));
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
void doreti_popl_fs __P((void)) __asm(__STRING(doreti_popl_fs));
void doreti_popl_fs_fault __P((void)) __asm(__STRING(doreti_popl_fs_fault));
KSE Milestone 2 Note ALL MODULES MUST BE RECOMPILED make the kernel aware that there are smaller units of scheduling than the process. (but only allow one thread per process at this time). This is functionally equivalent to teh previousl -current except that there is a thread associated with each process. Sorry john! (your next MFC will be a doosie!) Reviewed by: peter@freebsd.org, dillon@freebsd.org X-MFC after: ha ha ha ha
2001-09-12 08:38:13 +00:00
int fill_fpregs __P((struct thread *, struct fpreg *));
int fill_regs __P((struct thread *p, struct reg *regs));
int fill_dbregs __P((struct thread *p, struct dbreg *dbregs));
Moved declarations of non-cpu things from <machine/cpufunc.h> to better places.
1996-07-01 18:12:24 +00:00
void fillw __P((int /*u_short*/ pat, void *base, size_t cnt));
Moved declarations related to copying and zeroing to the right place.
1999-01-08 16:29:59 +00:00
void i486_bzero __P((void *buf, size_t len));
void i586_bcopy __P((const void *from, void *to, size_t len));
void i586_bzero __P((void *buf, size_t len));
int i586_copyin __P((const void *udaddr, void *kaddr, size_t len));
int i586_copyout __P((const void *kaddr, void *udaddr, size_t len));
void i686_pagezero __P((void *addr));
Revert the logic behind my last change, and use a function called `is_physical_memory()' now for the decision whether to dump some region of memory or not. Suggested by: davidg
1997-09-13 16:12:15 +00:00
int is_physical_memory __P((vm_offset_t addr));
Moved declarations of non-cpu things from <machine/cpufunc.h> to better places.
1996-07-01 18:12:24 +00:00
u_long kvtop __P((void *addr));
void setidt __P((int idx, alias_for_inthand_t *func, int typ, int dpl,
int selec));
- Overhaul the software interrupt code to use interrupt threads for each type of software interrupt. Roughly, what used to be a bit in spending now maps to a swi thread. Each thread can have multiple handlers, just like a hardware interrupt thread. - Instead of using a bitmask of pending interrupts, we schedule the specific software interrupt thread to run, so spending, NSWI, and the shandlers array are no longer needed. We can now have an arbitrary number of software interrupt threads. When you register a software interrupt thread via sinthand_add(), you get back a struct intrhand that you pass to sched_swi() when you wish to schedule your swi thread to run. - Convert the name of 'struct intrec' to 'struct intrhand' as it is a bit more intuitive. Also, prefix all the members of struct intrhand with 'ih_'. - Make swi_net() a MI function since there is now no point in it being MD. Submitted by: cp
2000-10-25 05:19:40 +00:00
void swi_vm __P((void *));
Add and move declarations to fix all of the warnings from `gcc -Wimplicit' (except in netccitt, netiso and netns) and most of the warnings from `gcc -Wnested-externs'. Fix all the bugs found. There were no serious ones.
1995-03-16 18:17:34 +00:00
void userconfig __P((void));
Don't forget to reset the hardware debug registers when a process that was using them exits. Don't allow a user process to cause the kernel to take a TRCTRAP on a user space address. Reviewed by: jlemon, sef Approved by: jkh
2000-02-20 20:51:23 +00:00
int user_dbreg_trap __P((void));
Add and move declarations to fix all of the warnings from `gcc -Wimplicit' (except in netccitt, netiso and netns) and most of the warnings from `gcc -Wnested-externs'. Fix all the bugs found. There were no serious ones.
1995-03-16 18:17:34 +00:00
#endif /* !_MACHINE_MD_VAR_H_ */
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