| disk.s (64123) | disk.s (64183) |
|---|---|
| 1# Copyright (c) KATO Takenori, 1999, 2000. 2# 3# All rights reserved. Unpublished rights reserved under the copyright 4# laws of Japan. 5# 6# Redistribution and use in source and binary forms, with or without 7# modification, are permitted provided that the following conditions 8# are met: --- 11 unchanged lines hidden (view full) --- 20# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 21# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 22# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 26# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27# | 1# Copyright (c) KATO Takenori, 1999, 2000. 2# 3# All rights reserved. Unpublished rights reserved under the copyright 4# laws of Japan. 5# 6# Redistribution and use in source and binary forms, with or without 7# modification, are permitted provided that the following conditions 8# are met: --- 11 unchanged lines hidden (view full) --- 20# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 21# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 22# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 26# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27# |
| 28# $FreeBSD: head/sys/boot/pc98/boot0.5/disk.s 64123 2000-08-02 08:46:08Z kato $ | 28# $FreeBSD: head/sys/boot/pc98/boot0.5/disk.s 64183 2000-08-03 09:00:19Z kato $ |
| 29# 30 31 .code16 32 .text 33# 34# Check magic number at the end of the sector 0 35# 36check_magic: --- 19 unchanged lines hidden (view full) --- 56 pop %es 57 movw curdevice, %bx 58 shlw %bx 59 movw maxpart(%bx), %cx # %cx = max num of partitions 60 movw partoff(%bx), %di 61 movw %di, %bx # %bx = offset to partition table 62 xorw %dx, %dx # %dx = partition number 63setup_partition_loop: | 29# 30 31 .code16 32 .text 33# 34# Check magic number at the end of the sector 0 35# 36check_magic: --- 19 unchanged lines hidden (view full) --- 56 pop %es 57 movw curdevice, %bx 58 shlw %bx 59 movw maxpart(%bx), %cx # %cx = max num of partitions 60 movw partoff(%bx), %di 61 movw %di, %bx # %bx = offset to partition table 62 xorw %dx, %dx # %dx = partition number 63setup_partition_loop: |
| 64 push %cx |
|
| 64 movw %dx, %si | 65 movw %dx, %si |
| 65 shlw %si 66 shlw %si 67 shlw %si 68 shlw %si 69 shlw %si | 66 movb $5, %cl 67 shlw %cl, %si |
| 70 addw %bx, %si 71 movb iplbuf(%si), %al 72 orb %al, %al 73 jz unused_partition | 68 addw %bx, %si 69 movb iplbuf(%si), %al 70 orb %al, %al 71 jz unused_partition |
| 72 addw $iplbuf, %si |
|
| 74 movw npartition, %ax 75 movw %ax, %di | 73 movw npartition, %ax 74 movw %ax, %di |
| 76 shlw %di 77 shlw %di 78 shlw %di 79 shlw %di 80 shlw %di | 75 movb $5, %cl 76 shlw %cl, %di |
| 81 addw $parttable, %di | 77 addw $parttable, %di |
| 82 push %cx | |
| 83 movw $32, %cx 84 rep 85 movsb | 78 movw $32, %cx 79 rep 80 movsb |
| 86 pop %cx | |
| 87 movw %ax, %di 88 addw $partnum, %di 89 movb %dl, (%di) 90 incw npartition 91unused_partition: 92 incw %dx | 81 movw %ax, %di 82 addw $partnum, %di 83 movb %dl, (%di) 84 incw npartition 85unused_partition: 86 incw %dx |
| 87 pop %cx |
|
| 93 loop setup_partition_loop 94 ret 95 96# 97# Read IPL and partition table in the current device. 98# 99 .global read_ipl 100read_ipl: --- 185 unchanged lines hidden --- | 88 loop setup_partition_loop 89 ret 90 91# 92# Read IPL and partition table in the current device. 93# 94 .global read_ipl 95read_ipl: --- 185 unchanged lines hidden --- |