8678a43066
Use KERNBASE instead. While here, move the text sections forward to the beginning of the text segment.
215 lines
5.7 KiB
ArmAsm
215 lines
5.7 KiB
ArmAsm
/* $FreeBSD$ */
|
|
/* $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/spr.h>
|
|
#include <machine/psl.h>
|
|
#include <machine/asm.h>
|
|
|
|
/* Locate the per-CPU data structure */
|
|
#define GET_CPUINFO(r) \
|
|
mfsprg0 r
|
|
|
|
/*
|
|
* Compiled KERNBASE location and the kernel load address
|
|
*/
|
|
.globl kernbase
|
|
.set kernbase, KERNBASE
|
|
|
|
/*
|
|
* Globals
|
|
*/
|
|
.data
|
|
GLOBAL(tmpstk)
|
|
.space 8208
|
|
GLOBAL(esym)
|
|
.long 0 /* end of symbol table */
|
|
|
|
GLOBAL(ofmsr)
|
|
.long 0, 0, 0, 0, 0 /* msr/sprg0-3 used in Open Firmware */
|
|
|
|
GLOBAL(powersave)
|
|
.long 0
|
|
|
|
#define INTSTK 16384 /* 16K interrupt stack */
|
|
#define INTRCNT_COUNT 256 /* max(HROWPIC_IRQMAX,OPENPIC_IRQMAX) */
|
|
GLOBAL(intrnames)
|
|
.space INTRCNT_COUNT * (MAXCOMLEN + 1) * 2
|
|
GLOBAL(eintrnames)
|
|
.align 4
|
|
GLOBAL(intrcnt)
|
|
.space INTRCNT_COUNT * 4 * 2
|
|
GLOBAL(eintrcnt)
|
|
|
|
/*
|
|
* File-scope for locore.S
|
|
*/
|
|
idle_u:
|
|
.long 0 /* fake uarea during idle after exit */
|
|
openfirmware_entry:
|
|
.long 0 /* Open Firmware entry point */
|
|
srsave:
|
|
.long 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0
|
|
|
|
/*
|
|
* This symbol is here for the benefit of kvm_mkdb, and is supposed to
|
|
* mark the start of kernel text.
|
|
*/
|
|
.text
|
|
.globl kernel_text
|
|
kernel_text:
|
|
|
|
/*
|
|
* Startup entry. Note, this must be the first thing in the text
|
|
* segment!
|
|
*/
|
|
.text
|
|
.globl __start
|
|
__start:
|
|
#ifdef FIRMWORKSBUGS
|
|
mfmsr 0
|
|
andi. 0,0,PSL_IR|PSL_DR
|
|
beq 1f
|
|
|
|
bl ofwr_init
|
|
1:
|
|
#endif
|
|
li 8,0
|
|
li 9,0x100
|
|
mtctr 9
|
|
1:
|
|
dcbf 0,8
|
|
icbi 0,8
|
|
addi 8,8,0x20
|
|
bdnz 1b
|
|
sync
|
|
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
|
|
stwu 0,ofmsr@l(9)
|
|
|
|
mfsprg0 0 /* save SPRG0-3 */
|
|
stw 0,4(9) /* ofmsr[1] = sprg0 */
|
|
mfsprg1 0
|
|
stw 0,8(9) /* ofmsr[2] = sprg1 */
|
|
mfsprg2 0
|
|
stw 0,12(9) /* ofmsr[3] = sprg2 */
|
|
mfsprg3 0
|
|
stw 0,16(9) /* ofmsr[4] = sprg3 */
|
|
|
|
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/aim/trap_subr.S>
|