These files are no longer used. They have been replaced with similarly named
.S files.
This commit is contained in:
Benno Rice
parent
f5b4f7c9eb
commit
82b65292eb
@ -1,137 +0,0 @@
|
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/*
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* Copyright (c) 2000, 2001 Benno Rice
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* 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
|
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#include <machine/asm.h>
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.text
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ASENTRY(atomic_set_8)
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0: lwarx 0, 0, 3 /* load old value */
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slwi 4, 4, 24 /* shift the byte so it's in the right place */
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or 0, 0, 4 /* generate new value */
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stwcx. 0, 0, 3 /* attempt to store */
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bne- 0 /* loop if failed */
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eieio /* synchronise */
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sync
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blr /* return */
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ASENTRY(atomic_clear_8)
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0: lwarx 0, 0, 3 /* load old value */
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slwi 4, 4, 24 /* shift the byte so it's in the right place */
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andc 0, 0, 4 /* generate new value */
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stwcx. 0, 0, 3 /* attempt to store */
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bne- 0 /* loop if failed */
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eieio /* synchronise */
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sync
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blr /* return */
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ASENTRY(atomic_add_8)
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0: lwarx 9, 0, 3 /* load old value */
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srwi 0, 9, 24 /* byte alignment */
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add 0, 4, 0 /* calculate new value */
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slwi 0, 9, 24 /* byte alignment */
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clrlwi 9, 9, 8 /* clear the byte in the original word */
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or 9, 9, 0 /* copy back in to the original word */
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stwcx. 9, 0, 3 /* attempt to store */
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bne- 0 /* loop if failed */
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eieio /* synchronise */
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sync
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blr /* return */
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ASENTRY(atomic_subtract_8)
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0: lwarx 9, 0, 3 /* load old value */
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srwi 0, 9, 24 /* byte alignment */
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subf 0, 4, 0 /* calculate new value */
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slwi 0, 9, 24 /* byte alignment */
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clrlwi 9, 9, 8 /* clear the byte in the original word */
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or 9, 9, 0 /* copy back in to the original word */
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stwcx. 9, 0, 3 /* attempt to store */
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bne- 0 /* loop if failed */
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eieio /* synchronise */
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sync
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blr /* return */
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ASENTRY(atomic_set_16)
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li 11, 3 /* mask to test for alignment */
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andc. 11, 3, 11 /* force address to be word-aligned */
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0: lwarx 12, 0, 11 /* load old value */
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bne 1f /* no realignment needed if it's aligned */
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slwi 4, 4, 16 /* realign operand */
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1: or 12, 12, 4 /* calculate new value */
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stwcx. 12, 0, 11 /* attempt to store */
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bne- 0b /* loop if failed */
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eieio /* synchronise */
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sync
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blr /* return */
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ASENTRY(atomic_clear_16)
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li 11, 3 /* mask to test for alignment */
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andc. 11, 3, 11 /* force address to be word-aligned */
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0: lwarx 12, 0, 11 /* load old value */
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bne 1f /* no realignment needed if it's aligned */
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slwi 4, 4, 16 /* realign operand */
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1: andc 12, 12, 4 /* calculate new value */
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stwcx. 12, 0, 11 /* attempt to store */
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bne- 0b /* loop if failed */
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eieio /* synchronise */
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sync
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blr /* return */
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ASENTRY(atomic_add_16)
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li 11, 3 /* mask to test for alignment */
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andc. 11, 3, 11 /* force address to be word-aligned */
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0: lwarx 12, 0, 11 /* load old value */
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bne 1f /* no realignment needed if it's aligned */
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srwi 12, 9, 16 /* realign */
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1: add 12, 4, 12 /* calculate new value */
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bne 2f /* no realignment needed if it's aligned */
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slwi 12, 12, 16 /* realign */
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2: clrlwi 9, 9, 16 /* clear old value */
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or 9, 9, 12 /* copy in new value */
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stwcx. 12, 0, 11 /* attempt to store */
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bne- 0b /* loop if failed */
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eieio /* synchronise */
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sync
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blr /* return */
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ASENTRY(atomic_subtract_16)
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li 11, 3 /* mask to test for alignment */
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andc. 11, 3, 11 /* force address to be word-aligned */
|
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0: lwarx 12, 0, 11 /* load old value */
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bne 1f /* no realignment needed if it's aligned */
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srwi 12, 9, 16 /* realign */
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1: subf 12, 4, 12 /* calculate new value */
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bne 2f /* no realignment needed if it's aligned */
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slwi 12, 12, 16 /* realign */
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2: clrlwi 9, 9, 16 /* clear old value */
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or 9, 9, 12 /* copy in new value */
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stwcx. 12, 0, 11 /* attempt to store */
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bne- 0 /* loop if failed */
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eieio /* synchronise */
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sync
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||||
blr /* return */
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@ -1,224 +0,0 @@
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/* $FreeBSD$ */
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/* $NetBSD: locore.S,v 1.24 2000/05/31 05:09:17 thorpej Exp $ */
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/*
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* Copyright (C) 2001 Benno Rice
|
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* 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 Benno Rice ``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 TOOLS GMBH 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.
|
||||
*/
|
||||
/*
|
||||
* Copyright (C) 1995, 1996 Wolfgang Solfrank.
|
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* Copyright (C) 1995, 1996 TooLs GmbH.
|
||||
* 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. All advertising materials mentioning features or use of this software
|
||||
* must display the following acknowledgement:
|
||||
* This product includes software developed by TooLs GmbH.
|
||||
* 4. The name of TooLs GmbH may not be used to endorse or promote products
|
||||
* derived from this software without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``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 TOOLS GMBH 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.
|
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*/
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#include "opt_ddb.h"
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#include "opt_ipkdb.h"
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#include "assym.s"
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#include <sys/syscall.h>
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#include <machine/trap.h>
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#include <machine/param.h>
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#include <machine/sr.h>
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#include <machine/spr.h>
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#include <machine/psl.h>
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#include <machine/asm.h>
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/*
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* Some instructions gas doesn't understand (yet?)
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*/
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#define bdneq bdnzf 2,
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/*
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* Globals
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*/
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.data
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GLOBAL(tmpstk)
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.space 8208
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GLOBAL(esym)
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.long 0 /* end of symbol table */
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GLOBAL(ofmsr)
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.long 0 /* msr used in Open Firmware */
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GLOBAL(powersave)
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.long 0
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#define INTSTK 8192 /* 8K interrupt stack */
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#define SPILLSTK 4096 /* 4K spill stack */
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/*
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* Dummy interrupt table to keep sysctl happy until
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* it's worked out what to do with naming
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*/
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||||
GLOBAL(intrnames)
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.asciz "dummy"
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||||
GLOBAL(eintrnames)
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||||
.align 4
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||||
GLOBAL(intrcnt)
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||||
.long 0
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||||
GLOBAL(eintrcnt)
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||||
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||||
/*
|
||||
* File-scope for locore.S
|
||||
*/
|
||||
idle_u:
|
||||
.long 0 /* fake uarea during idle after exit */
|
||||
openfirmware_entry:
|
||||
.long 0 /* openfirmware entry point */
|
||||
srsave:
|
||||
.long 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0
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|
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/*
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||||
* This symbol is here for the benefit of kvm_mkdb, and is supposed to
|
||||
* mark the start of kernel text.
|
||||
*/
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||||
.text
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||||
.globl kernel_text
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||||
kernel_text:
|
||||
|
||||
/*
|
||||
* Startup entry. Note, this must be the first thing in the text
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||||
* segment!
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||||
*/
|
||||
.text
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||||
.globl __start
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||||
__start:
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||||
#ifdef FIRMWORKSBUGS
|
||||
mfmsr 0
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||||
andi. 0,0,PSL_IR|PSL_DR
|
||||
beq 1f
|
||||
|
||||
bl ofwr_init
|
||||
1:
|
||||
#endif
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||||
li 8,0
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||||
li 9,0x100
|
||||
mtctr 9
|
||||
1:
|
||||
dcbf 0,8
|
||||
icbi 0,8
|
||||
addi 8,8,0x20
|
||||
bdnz 1b
|
||||
sync
|
||||
isync
|
||||
|
||||
mtibatu 0,0
|
||||
mtibatu 1,0
|
||||
mtibatu 2,0
|
||||
mtibatu 3,0
|
||||
mtdbatu 0,0
|
||||
mtdbatu 1,0
|
||||
mtdbatu 2,0
|
||||
mtdbatu 3,0
|
||||
|
||||
li 9,0x12
|
||||
mtibatl 0,9
|
||||
mtdbatl 0,9
|
||||
li 9,0x1ffe
|
||||
mtibatu 0,9
|
||||
mtdbatu 0,9
|
||||
isync
|
||||
|
||||
/* Save the argument pointer and length */
|
||||
mr 20,6
|
||||
mr 21,7
|
||||
|
||||
lis 8,openfirmware_entry@ha
|
||||
stw 5,openfirmware_entry@l(8) /* save client interface handler */
|
||||
mr 3,5
|
||||
|
||||
lis 1,tmpstk@ha
|
||||
addi 1,1,tmpstk@l
|
||||
addi 1,1,8192
|
||||
|
||||
mfmsr 0
|
||||
lis 9,ofmsr@ha
|
||||
stw 0,ofmsr@l(9)
|
||||
|
||||
bl OF_init
|
||||
|
||||
lis 4,end@ha
|
||||
addi 4,4,end@l
|
||||
mr 5,4
|
||||
|
||||
lis 3,kernel_text@ha
|
||||
addi 3,3,kernel_text@l
|
||||
|
||||
/* Restore the argument pointer and length */
|
||||
mr 6,20
|
||||
mr 7,21
|
||||
|
||||
bl powerpc_init
|
||||
bl mi_startup
|
||||
b OF_exit
|
||||
|
||||
/*
|
||||
* int setfault()
|
||||
*
|
||||
* Similar to setjmp to setup for handling faults on accesses to user memory.
|
||||
* Any routine using this may only call bcopy, either the form below,
|
||||
* or the (currently used) C code optimized, so it doesn't use any non-volatile
|
||||
* registers.
|
||||
*/
|
||||
.globl setfault
|
||||
setfault:
|
||||
mflr 0
|
||||
mfcr 12
|
||||
mfsprg 4,0
|
||||
lwz 4,PC_CURTHREAD(4)
|
||||
lwz 4,TD_PCB(4)
|
||||
stw 3,PCB_ONFAULT(4)
|
||||
stw 0,0(3)
|
||||
stw 1,4(3)
|
||||
stw 2,8(3)
|
||||
stmw 12,12(3)
|
||||
xor 3,3,3
|
||||
blr
|
||||
|
||||
#include <powerpc/powerpc/trap_subr.S>
|
||||
@ -1,75 +0,0 @@
|
||||
/* $FreeBSD$ */
|
||||
/* $NetBSD: ofwmagic.S,v 1.2 1997/10/09 08:38:18 jtc Exp $ */
|
||||
|
||||
/*-
|
||||
* Copyright (c) 1997 The NetBSD Foundation, Inc.
|
||||
* All rights reserved.
|
||||
*
|
||||
* This code is derived from software contributed to The NetBSD Foundation
|
||||
* by Jason R. Thorpe.
|
||||
*
|
||||
* 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. All advertising materials mentioning features or use of this software
|
||||
* must display the following acknowledgement:
|
||||
* This product includes software developed by the NetBSD
|
||||
* Foundation, Inc. and its contributors.
|
||||
* 4. Neither the name of The NetBSD Foundation nor the names of its
|
||||
* contributors may be used to endorse or promote products derived
|
||||
* from this software without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
|
||||
*/
|
||||
|
||||
/*
|
||||
* Magic note section used by OpenFirmware.
|
||||
*/
|
||||
|
||||
.section ".note"
|
||||
|
||||
# note header
|
||||
|
||||
# length of name
|
||||
.long 8
|
||||
|
||||
# note descriptor size
|
||||
.long 20
|
||||
|
||||
# note type (IEEE 1275)
|
||||
.long 0x1275
|
||||
|
||||
# name of owner
|
||||
.asciz "PowerPC"
|
||||
.balign 4
|
||||
|
||||
|
||||
# note descriptor
|
||||
|
||||
# real mode (-1) or virtual mode (0)
|
||||
.long 0
|
||||
|
||||
# real-base
|
||||
.long -1
|
||||
# real-size
|
||||
.long -1
|
||||
|
||||
# virt-base
|
||||
.long -1
|
||||
# virt-size
|
||||
.long -1
|
||||
@ -1,161 +0,0 @@
|
||||
/* $FreeBSD$ */
|
||||
/* $NetBSD: locore.S,v 1.24 2000/05/31 05:09:17 thorpej Exp $ */
|
||||
|
||||
/*
|
||||
* Copyright (C) 2001 Benno Rice
|
||||
* 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 Benno Rice ``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 TOOLS GMBH 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.
|
||||
*/
|
||||
/*
|
||||
* Copyright (C) 1995, 1996 Wolfgang Solfrank.
|
||||
* Copyright (C) 1995, 1996 TooLs GmbH.
|
||||
* 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. All advertising materials mentioning features or use of this software
|
||||
* must display the following acknowledgement:
|
||||
* This product includes software developed by TooLs GmbH.
|
||||
* 4. The name of TooLs GmbH may not be used to endorse or promote products
|
||||
* derived from this software without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``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 TOOLS GMBH 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.
|
||||
*/
|
||||
|
||||
#include "assym.s"
|
||||
|
||||
#include <sys/syscall.h>
|
||||
|
||||
#include <machine/trap.h>
|
||||
#include <machine/param.h>
|
||||
#include <machine/sr.h>
|
||||
#include <machine/psl.h>
|
||||
#include <machine/asm.h>
|
||||
|
||||
/*
|
||||
* void cpu_switch()
|
||||
* Find a runnable thread and switch to it.
|
||||
*/
|
||||
ENTRY(cpu_switch)
|
||||
mfsprg %r3,0 /* Get the pcpu pointer */
|
||||
lwz %r4,PC_CURTHREAD(%r3) /* Get the current thread */
|
||||
lwz %r3,TD_PCB(%r4) /* Get a pointer to the PCB */
|
||||
|
||||
mr %r12,%r2
|
||||
stmw %r12,PCB_CONTEXT(%r3) /* Save the non-volatile GP regs */
|
||||
mr %r14,%r3 /* Copy the current pcb pointer */
|
||||
mr %r15,%r4 /* ... and the curthread pointer */
|
||||
mfcr %r16 /* Save the condition register */
|
||||
stw %r16,PCB_CR(%r3)
|
||||
mflr %r16 /* Save the link register */
|
||||
stw %r16,PCB_LR(%r3)
|
||||
mfsr %r16,USER_SR /* Save USER_SR for copyin/out */
|
||||
isync
|
||||
stw %r16,PCB_USR(%r3)
|
||||
stw %r1,PCB_SP(%r3) /* Save the stack pointer */
|
||||
|
||||
#if 0
|
||||
lwz %r29,PCB_FLAGS(%r3)
|
||||
andi. %r9, %r29, 1 /* XXX - don't hard code */
|
||||
beq .L1
|
||||
bl save_fpu
|
||||
#endif
|
||||
|
||||
.L1:
|
||||
bl choosethread /* Find a new thread to run */
|
||||
cmplw 0,%r3,%r15 /* Compare to curthread */
|
||||
beq .L2 /* If it's the same, we're done */
|
||||
|
||||
mr %r16,%r3 /* Save off the (struct thread *) */
|
||||
|
||||
mr %r3,%r15
|
||||
bl pmap_deactivate /* Deactivate the current pmap */
|
||||
|
||||
mr %r3,%r16
|
||||
bl pmap_activate /* Activate the new address space */
|
||||
|
||||
mfsprg %r4,0 /* Get the pcpu pointer */
|
||||
stw %r16,PC_CURTHREAD(%r4) /* Store new current thread */
|
||||
mr %r3,%r16 /* and save in r3 */
|
||||
lwz %r16,TD_PCB(%r16) /* Store new current PCB */
|
||||
stw %r16,PC_CURPCB(%r4)
|
||||
|
||||
#if 0
|
||||
lwz %r29, PCB_FLAGS(%r4) /* Restore FPU regs if needed */
|
||||
andi. %r9, %r29, 1
|
||||
beq .L2
|
||||
mr %r3, %r4
|
||||
bl enable_fpu
|
||||
#endif
|
||||
|
||||
/* thread to restore is in r3 */
|
||||
.L2:
|
||||
lwz %r3, TD_PCB(%r3)
|
||||
lmw %r12,PCB_CONTEXT(%r3) /* Load the non-volatile GP regs */
|
||||
mr %r2,%r12
|
||||
lwz %r5,PCB_CR(%r3) /* Load the condition register */
|
||||
mtcr %r5
|
||||
lwz %r5,PCB_LR(%r3) /* Load the link register */
|
||||
mtlr %r5
|
||||
lwz %r5,PCB_USR(%r3) /* Load the USER_SR segment reg */
|
||||
mtsr USER_SR,%r5
|
||||
isync
|
||||
lwz %r1,PCB_SP(%r3) /* Load the stack pointer */
|
||||
blr
|
||||
|
||||
/*
|
||||
* savectx(pcb)
|
||||
* Update pcb, saving current processor state
|
||||
*/
|
||||
ENTRY(savectx)
|
||||
mr %r12,%r2
|
||||
stmw %r12,PCB_CONTEXT(%r3) /* Save the non-volatile GP regs */
|
||||
mfcr %r4 /* Save the condition register */
|
||||
stw %r4,PCB_CONTEXT(%r3)
|
||||
blr
|
||||
|
||||
/*
|
||||
* fork_trampoline()
|
||||
* Set up the return from cpu_fork()
|
||||
*/
|
||||
ENTRY(fork_trampoline)
|
||||
lwz %r3,CF_FUNC(%r1)
|
||||
lwz %r4,CF_ARG0(%r1)
|
||||
lwz %r5,CF_ARG1(%r1)
|
||||
bl fork_exit
|
||||
addi %r1,%r1,4
|
||||
b trapexit
|
||||
Loading…
x
Reference in New Issue
Block a user