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Synced with sys/boot/i386/btx/btx/btx.s rev 1.14.

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This commit is contained in:
KATO Takenori 2000-01-29 13:48:36 +00:00
parent 23111c4144
commit 0219f40756
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=56813
2 changed files with 6 additions and 2 deletions
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4
sys/boot/pc98/btx/btx/btx.S
View File

@ -264,11 +264,11 @@ init.9: pushb $0x0 # general
#
exit: cli # Disable interrupts
movl $MEM_ESP0,%esp # Clear stack
ifdef(`PAGING',`
#
# Turn off paging.
#
movl %cr0,%eax # Get CR0
ifdef(`PAGING',`
andl $~0x80000000,%eax # Disable
movl %eax,%cr0 # paging
')
@ -900,11 +900,13 @@ intx30: cmpl $SYS_EXEC,%eax # Exec system call?
movl $MEM_USR,%eax # User base address
addl 0xc(%esp,1),%eax # Change to user
leal 0x4(%eax),%esp # stack
ifdef(`PAGING',`
movl %cr0,%eax # Turn
andl $~0x80000000,%eax # off
movl %eax,%cr0 # paging
xorl %eax,%eax # Flush
movl %eax,%cr3 # TLB
')
popl %eax # Call
call *%eax # program
intx30.1: incb %ss:btx_hdr+0x7 # Flag reboot

4
sys/boot/pc98/btx/btx/btx.s
View File

@ -264,11 +264,11 @@ init.9: pushb $0x0 # general
#
exit: cli # Disable interrupts
movl $MEM_ESP0,%esp # Clear stack
ifdef(`PAGING',`
#
# Turn off paging.
#
movl %cr0,%eax # Get CR0
ifdef(`PAGING',`
andl $~0x80000000,%eax # Disable
movl %eax,%cr0 # paging
')
@ -900,11 +900,13 @@ intx30: cmpl $SYS_EXEC,%eax # Exec system call?
movl $MEM_USR,%eax # User base address
addl 0xc(%esp,1),%eax # Change to user
leal 0x4(%eax),%esp # stack
ifdef(`PAGING',`
movl %cr0,%eax # Turn
andl $~0x80000000,%eax # off
movl %eax,%cr0 # paging
xorl %eax,%eax # Flush
movl %eax,%cr3 # TLB
')
popl %eax # Call
call *%eax # program
intx30.1: incb %ss:btx_hdr+0x7 # Flag reboot