1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
|
/* $OpenBSD: srt0.S,v 1.10 1998/05/14 20:59:12 mickey Exp $ */
/*
* Copyright (c) 1997 Michael Shalayeff
* 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 Michael Shalayeff.
* 4. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 REGENTS 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.
*
*/
#include <machine/asm.h>
.globl _C_LABEL(end)
.globl _C_LABEL(edata)
.globl _C_LABEL(boot)
.globl _C_LABEL(_rtt)
.globl _ASM_LABEL(pmm_init)
.text
.globl start
start:
#ifdef DEBUG
movl $0xb80a0, %ebx
movl $0x07420742, (%ebx)
#endif
call _ASM_LABEL(pmm_init)
#ifdef DEBUG
movl $0xb80a4, %ebx
movl $0x07520752, (%ebx)
#endif
popl %eax
cmpl $BOOTMAGIC, %eax
je 1f
#ifdef DEBUG
movl $0xb80a8, %ebx
movl $0xcf41cf4d, (%ebx)
#endif
1:
/* zero .bss */
xorl %eax, %eax
movl $_C_LABEL(end), %ecx
subl $_C_LABEL(edata),%ecx
movl $_C_LABEL(edata), %edi
cld
rep; stosb
call _C_LABEL(boot)
jmp _C_LABEL(_rtt)
|
