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Remove gratuitous waste of 2K of memory for BIOS variables. We never load

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the kernel at 0-640k; we haven't had the ability to do that since before
2.0R. Furthermore, I fail to see how putting an instruction at 0 and then
doing a .org 0x500 is going to prevent the stuff from getting clobbered
in the first place; a.out is just too stupid to know about sparse address
spaces.
This commit is contained in:
David Greenman 1995-04-16 10:12:16 +00:00
parent 2fdccd5e8c
commit 857f4d44be
3 changed files with 3 additions and 21 deletions
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8
sys/amd64/amd64/locore.S
View File

@ -34,7 +34,7 @@
* SUCH DAMAGE.
*
* from: @(#)locore.s 7.3 (Berkeley) 5/13/91
* $Id: locore.s,v 1.50 1995/03/10 08:41:26 phk Exp $
* $Id: locore.s,v 1.51 1995/03/11 03:49:46 phk Exp $
*/
/*
@ -154,13 +154,7 @@ _bdb_exists: .long 0
*/
NON_GPROF_ENTRY(btext)
movw $0x1234,0x472 /* warm boot */
jmp 1f
/*
* XXX now that we load at 1MB is this still really used?
*/
.org 0x500 /* space for BIOS variables */
1:
/* Set up a real frame, some day we will be doing returns */
pushl %ebp
movl %esp, %ebp

8
sys/amd64/amd64/locore.s
View File

@ -34,7 +34,7 @@
* SUCH DAMAGE.
*
* from: @(#)locore.s 7.3 (Berkeley) 5/13/91
* $Id: locore.s,v 1.50 1995/03/10 08:41:26 phk Exp $
* $Id: locore.s,v 1.51 1995/03/11 03:49:46 phk Exp $
*/
/*
@ -154,13 +154,7 @@ _bdb_exists: .long 0
*/
NON_GPROF_ENTRY(btext)
movw $0x1234,0x472 /* warm boot */
jmp 1f
/*
* XXX now that we load at 1MB is this still really used?
*/
.org 0x500 /* space for BIOS variables */
1:
/* Set up a real frame, some day we will be doing returns */
pushl %ebp
movl %esp, %ebp

8
sys/i386/i386/locore.s
View File

@ -34,7 +34,7 @@
* SUCH DAMAGE.
*
* from: @(#)locore.s 7.3 (Berkeley) 5/13/91
* $Id: locore.s,v 1.50 1995/03/10 08:41:26 phk Exp $
* $Id: locore.s,v 1.51 1995/03/11 03:49:46 phk Exp $
*/
/*
@ -154,13 +154,7 @@ _bdb_exists: .long 0
*/
NON_GPROF_ENTRY(btext)
movw $0x1234,0x472 /* warm boot */
jmp 1f
/*
* XXX now that we load at 1MB is this still really used?
*/
.org 0x500 /* space for BIOS variables */
1:
/* Set up a real frame, some day we will be doing returns */
pushl %ebp
movl %esp, %ebp