1/* $FreeBSD: head/sys/powerpc/aim/locore32.S 278495 2015-02-10 06:35:16Z rpaulo $ */
| 1/* $FreeBSD: head/sys/powerpc/aim/locore32.S 279750 2015-03-07 20:14:46Z nwhitehorn $ */
|
2/* $NetBSD: locore.S,v 1.24 2000/05/31 05:09:17 thorpej Exp $ */
3
4/*-
5 * Copyright (C) 2001 Benno Rice
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
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.
16 *
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.
27 */
28/*-
29 * Copyright (C) 1995, 1996 Wolfgang Solfrank.
30 * Copyright (C) 1995, 1996 TooLs GmbH.
31 * All rights reserved.
32 *
33 * Redistribution and use in source and binary forms, with or without
34 * modification, are permitted provided that the following conditions
35 * are met:
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.
46 *
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.
57 */
58
59#include "assym.s"
60
61#include <sys/syscall.h>
62
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"
68
69/* Locate the per-CPU data structure */
70#define GET_CPUINFO(r) \
71 mfsprg0 r
72
73/*
74 * Compiled KERNBASE location and the kernel load address
75 */
76 .globl kernbase
77 .set kernbase, KERNBASE
78
79/*
80 * Globals
81 */
82 .data
83 .align 3
84GLOBAL(__startkernel)
85 .long begin
86GLOBAL(__endkernel)
87 .long end
88 .align 4
89#define TMPSTKSZ 8192 /* 8K temporary stack */
90GLOBAL(tmpstk)
91 .space TMPSTKSZ
92
93 .text
94 .globl btext
95btext:
96
97/*
98 * This symbol is here for the benefit of kvm_mkdb, and is supposed to
99 * mark the start of kernel text.
100 */
101 .globl kernel_text
102kernel_text:
103
104/*
105 * Startup entry. Note, this must be the first thing in the text
106 * segment!
107 */
108 .text
109 .globl __start
110__start:
| 2/* $NetBSD: locore.S,v 1.24 2000/05/31 05:09:17 thorpej Exp $ */
3
4/*-
5 * Copyright (C) 2001 Benno Rice
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
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.
16 *
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.
27 */
28/*-
29 * Copyright (C) 1995, 1996 Wolfgang Solfrank.
30 * Copyright (C) 1995, 1996 TooLs GmbH.
31 * All rights reserved.
32 *
33 * Redistribution and use in source and binary forms, with or without
34 * modification, are permitted provided that the following conditions
35 * are met:
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.
46 *
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.
57 */
58
59#include "assym.s"
60
61#include <sys/syscall.h>
62
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"
68
69/* Locate the per-CPU data structure */
70#define GET_CPUINFO(r) \
71 mfsprg0 r
72
73/*
74 * Compiled KERNBASE location and the kernel load address
75 */
76 .globl kernbase
77 .set kernbase, KERNBASE
78
79/*
80 * Globals
81 */
82 .data
83 .align 3
84GLOBAL(__startkernel)
85 .long begin
86GLOBAL(__endkernel)
87 .long end
88 .align 4
89#define TMPSTKSZ 8192 /* 8K temporary stack */
90GLOBAL(tmpstk)
91 .space TMPSTKSZ
92
93 .text
94 .globl btext
95btext:
96
97/*
98 * This symbol is here for the benefit of kvm_mkdb, and is supposed to
99 * mark the start of kernel text.
100 */
101 .globl kernel_text
102kernel_text:
103
104/*
105 * Startup entry. Note, this must be the first thing in the text
106 * segment!
107 */
108 .text
109 .globl __start
110__start:
|
111 li 8,0
112 li 9,0x100
113 mtctr 9
1141:
115 dcbf 0,8
116 icbi 0,8
117 addi 8,8,0x20
118 bdnz 1b
119 sync
120 isync
| 111 /* Figure out where we are */
112 bl 1f
113 .long _DYNAMIC-.
114 .long _GLOBAL_OFFSET_TABLE_-.
115 .long tmpstk-.
1161: mflr %r30
|
121
| 117
|
122 /* Zero bss, in case we were started by something unhelpful */
123 li 0,0
124 lis 8,_edata@ha
125 addi 8,8,_edata@l
126 lis 9,_end@ha
127 addi 9,9,_end@l
1282: stw 0,0(8)
129 addi 8,8,4
130 cmplw 8,9
131 blt 2b
| 118 /* Set up temporary stack pointer */
119 lwz %r1,8(%r30)
120 add %r1,%r1,%r30
121 addi %r1,%r1,(8+TMPSTKSZ-32)
122
123 /* Relocate self */
124 stw %r3,16(%r1)
125 stw %r4,20(%r1)
126 stw %r5,24(%r1)
127 stw %r6,28(%r1)
128
129 lwz %r3,0(%r30) /* _DYNAMIC in %r3 */
130 add %r3,%r3,%r30
131 lwz %r4,4(%r30) /* GOT pointer */
132 add %r4,%r4,%r30
133 lwz %r4,4(%r4) /* got[0] is _DYNAMIC link addr */
134 subf %r4,%r4,%r3 /* subtract to calculate relocbase */
135 bl elf_reloc_self
|
132
| 136
|
133 lis 1,(tmpstk+TMPSTKSZ-16)@ha
134 addi 1,1,(tmpstk+TMPSTKSZ-16)@l
| 137 lwz %r3,16(%r1)
138 lwz %r4,20(%r1)
139 lwz %r5,24(%r1)
140 lwz %r6,28(%r1)
|
135
| 141
|
| 142 /* MD setup */
|
136 bl powerpc_init
| 143 bl powerpc_init
|
| 144
145 /* Set stack pointer to new value and branch to mi_startup */
|
137 mr %r1, %r3
138 li %r3, 0
139 stw %r3, 0(%r1)
140 bl mi_startup
| 146 mr %r1, %r3
147 li %r3, 0
148 stw %r3, 0(%r1)
149 bl mi_startup
|
| 150
151 /* If mi_startup somehow returns, exit. This would be bad. */
|
141 b OF_exit
142
143/*
144 * int setfault()
145 *
146 * Similar to setjmp to setup for handling faults on accesses to user memory.
147 * Any routine using this may only call bcopy, either the form below,
148 * or the (currently used) C code optimized, so it doesn't use any non-volatile
149 * registers.
150 */
151 .globl setfault
152setfault:
153 mflr 0
154 mfcr 12
155 mfsprg 4,0
156 lwz 4,TD_PCB(2) /* curthread = r2 */
157 stw 3,PCB_ONFAULT(4)
158 stw 0,0(3)
159 stw 1,4(3)
160 stw 2,8(3)
161 stmw 12,12(3)
162 xor 3,3,3
163 blr
164
165#include <powerpc/aim/trap_subr32.S>
| 152 b OF_exit
153
154/*
155 * int setfault()
156 *
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
160 * registers.
161 */
162 .globl setfault
163setfault:
164 mflr 0
165 mfcr 12
166 mfsprg 4,0
167 lwz 4,TD_PCB(2) /* curthread = r2 */
168 stw 3,PCB_ONFAULT(4)
169 stw 0,0(3)
170 stw 1,4(3)
171 stw 2,8(3)
172 stmw 12,12(3)
173 xor 3,3,3
174 blr
175
176#include <powerpc/aim/trap_subr32.S>
|