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Update all prefixes currently referring to _load_size to include a

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compressor fixup section.
This commit is contained in:
Michael Brown
2007-07-16 17:17:26 +01:00
parent 0929142a15
commit 84551d485e
6 changed files with 61 additions and 21 deletions
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13
src/arch/i386/prefix/dskprefix.S
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@@ -1,10 +1,7 @@
/* NOTE: this boot sector contains instructions that need at least an 80186.
* Yes, as86 has a bug somewhere in the valid instruction set checks.
*
* SYS_SIZE is the number of clicks (16 bytes) to be loaded.
*/
.globl SYSSIZE
.equ SYSSIZE, _load_size_pgh
/* floppyload.S Copyright (C) 1991, 1992 Linus Torvalds
* modified by Drew Eckhardt
@@ -147,6 +144,14 @@ got_sectors:
/* Jump to loaded copy */
ljmp $SYSSEG, $start_runtime
endseg: .word SYSSEG + _load_size_pgh
.section ".zinfo.fixup", "a" /* Compressor fixup information */
.ascii "SUBW"
.long endseg
.long 16
.long 0
.previous
/* This routine loads the system at address SYSSEG<<4, making sure no 64kB
* boundaries are crossed. We try to load it as fast as possible, loading whole
* tracks whenever we can.
@@ -165,7 +170,7 @@ rp_read:
movb $4, %cl
shrw %cl,%dx /* bx is always divisible by 16 */
addw %dx,%ax
cmpw $SYSSEG+SYSSIZE, %ax /* have we loaded all yet? */
cmpw endseg, %ax /* have we loaded all yet? */
jb ok1_read
ret
ok1_read: