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/spr.h>
66 #include <machine/asm.h>
67 #include "opt_platform.h"
69 /* Locate the per-CPU data structure */
70 #define GET_CPUINFO(r) \
74 * Compiled KERNBASE location and the kernel load address
77 .set kernbase, KERNBASE
89 #define TMPSTKSZ 8192 /* 8K temporary stack */
98 * This symbol is here for the benefit of kvm_mkdb, and is supposed to
99 * mark the start of kernel text.
105 * Startup entry. Note, this must be the first thing in the text
111 /* Figure out where we are */
114 .long _GLOBAL_OFFSET_TABLE_-.
118 /* Set up temporary stack pointer */
121 addi %r1,%r1,(8+TMPSTKSZ-32)
129 lwz %r3,0(%r30) /* _DYNAMIC in %r3 */
131 lwz %r4,4(%r30) /* GOT pointer */
133 lwz %r4,4(%r4) /* got[0] is _DYNAMIC link addr */
134 subf %r4,%r4,%r3 /* subtract to calculate relocbase */
145 /* Set stack pointer to new value and branch to mi_startup */
151 /* If mi_startup somehow returns, exit. This would be bad. */
157 * Similar to setjmp to setup for handling faults on accesses to user memory.
158 * Any routine using this may only call bcopy, either the form below,
159 * or the (currently used) C code optimized, so it doesn't use any non-volatile
167 lwz 4,TD_PCB(2) /* curthread = r2 */
176 #include <powerpc/aim/trap_subr32.S>