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| author | H. Peter Anvin <hpa@zytor.com> | 2009-06-07 17:06:59 -0700 |
|---|---|---|
| committer | H. Peter Anvin <hpa@zytor.com> | 2009-06-07 17:06:59 -0700 |
| commit | 0a4a533cc1c0e0c7e526f454d29b416bb580df0f (patch) | |
| tree | 0573707a52470aa3e6cdbb7fd786e918ba0147b5 /memdisk | |
| parent | 4d9aad915bb3ee96c2674ab5678e435ea9e6245e (diff) | |
| download | syslinux-0a4a533cc1c0e0c7e526f454d29b416bb580df0f.tar.gz | |
memdisk: set up a limited-size real-mode stack
Limit the size of the real-mode stack. This should limit the amount
of memory needed for a relocated real-mode code.
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Diffstat (limited to 'memdisk')
| -rw-r--r-- | memdisk/memdisk16.asm | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/memdisk/memdisk16.asm b/memdisk/memdisk16.asm index b020c705..e8e5d78d 100644 --- a/memdisk/memdisk16.asm +++ b/memdisk/memdisk16.asm @@ -33,6 +33,9 @@ BOUNCE_SEG equ (MY_CS+0x1000) section .rodata align=16 section .data align=16 section .bss align=16 + section .stack align=16 nobits +stack resb 512 +stack_end equ $ ;; ----------------------------------------------------------------------- ;; Kernel image header @@ -107,7 +110,7 @@ start: rep movsd mov ds,ax mov ss,ax - xor esp,esp ; Stack at top of 64K segment + mov esp,stack_end jmp MY_CS:.next .next: |