2 /* $NetBSD: locore.S,v 1.24 2000/05/31 05:09:17 thorpej Exp $ */
5 * Copyright (C) 2001 Benno Rice
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
17 * THIS SOFTWARE IS PROVIDED BY Benno Rice ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
21 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
22 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
23 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
24 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
25 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
26 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 * Copyright (C) 1995, 1996 Wolfgang Solfrank.
30 * Copyright (C) 1995, 1996 TooLs GmbH.
31 * All rights reserved.
33 * Redistribution and use in source and binary forms, with or without
34 * modification, are permitted provided that the following conditions
36 * 1. Redistributions of source code must retain the above copyright
37 * notice, this list of conditions and the following disclaimer.
38 * 2. Redistributions in binary form must reproduce the above copyright
39 * notice, this list of conditions and the following disclaimer in the
40 * documentation and/or other materials provided with the distribution.
41 * 3. All advertising materials mentioning features or use of this software
42 * must display the following acknowledgement:
43 * This product includes software developed by TooLs GmbH.
44 * 4. The name of TooLs GmbH may not be used to endorse or promote products
45 * derived from this software without specific prior written permission.
47 * THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR
48 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
49 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
50 * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
51 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
52 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
53 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
54 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
55 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
56 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
61 #include <sys/syscall.h>
63 #include <machine/trap.h>
64 #include <machine/param.h>
65 #include <machine/sr.h>
66 #include <machine/spr.h>
67 #include <machine/psl.h>
68 #include <machine/asm.h>
70 /* Locate the per-CPU data structure */
71 #define GET_CPUINFO(r) \
75 * Compiled KERNBASE location and the kernel load address
78 .set kernbase, KERNBASE
80 #define TMPSTKSZ 8192 /* 8K temporary stack */
90 .long 0 /* end of symbol table */
93 .long 0, 0, 0, 0, 0 /* msr/sprg0-3 used in Open Firmware */
95 #define INTRCNT_COUNT 256 /* max(HROWPIC_IRQMAX,OPENPIC_IRQMAX) */
97 .space INTRCNT_COUNT * (MAXCOMLEN + 1) * 2
101 .space INTRCNT_COUNT * 4 * 2
105 * File-scope for locore.S
108 .long 0 /* fake uarea during idle after exit */
110 .long 0 /* Open Firmware entry point */
112 .long 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0
119 * This symbol is here for the benefit of kvm_mkdb, and is supposed to
120 * mark the start of kernel text.
126 * Startup entry. Note, this must be the first thing in the text
143 /* Save the argument pointer and length */
147 lis 8,openfirmware_entry@ha
148 stw 5,openfirmware_entry@l(8) /* save client interface handler */
150 lis 1,(tmpstk+TMPSTKSZ-16)@ha
151 addi 1,1,(tmpstk+TMPSTKSZ-16)@l
157 mfsprg0 0 /* save SPRG0-3 */
158 stw 0,4(9) /* ofmsr[1] = sprg0 */
160 stw 0,8(9) /* ofmsr[2] = sprg1 */
162 stw 0,12(9) /* ofmsr[3] = sprg2 */
164 stw 0,16(9) /* ofmsr[4] = sprg3 */
173 addi 3,3,kernel_text@l
175 /* Restore the argument pointer and length */
189 * Similar to setjmp to setup for handling faults on accesses to user memory.
190 * Any routine using this may only call bcopy, either the form below,
191 * or the (currently used) C code optimized, so it doesn't use any non-volatile
199 lwz 4,PC_CURTHREAD(4)
209 #include <powerpc/aim/trap_subr.S>