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| author | H. Peter Anvin <hpa@zytor.com> | 2009-05-15 16:24:34 -0700 |
|---|---|---|
| committer | H. Peter Anvin <hpa@zytor.com> | 2009-05-15 16:26:33 -0700 |
| commit | e7ffeff65d02ea5e7ebd03adfc70376bc8789aa5 (patch) | |
| tree | 43da5b5b878d72bcfb563af510b41d0479714c44 | |
| parent | 401edbe977d7993e69f683529b480a73ec8e3e56 (diff) | |
| download | syslinux-e7ffeff65d02ea5e7ebd03adfc70376bc8789aa5.tar.gz | |
Fix clobber of the command line when using F-keys+LSS graphics
Fix a half-entered command line when getting clobbered when pressing
an F key that in turn invokes an LSS graphic. This was used by
duplexing the command line buffer as LSS decompression space.
Allocate a separate buffer, but move the legacy graphic variables to
.bss2 to avoid overflow.
Reported-by: Михаил <from.miha@gmail.com>
Debugged-by: Sebastian Herbszt <herbszt@gmx.de>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
| -rw-r--r-- | core/graphics.inc | 7 |
1 files changed, 3 insertions, 4 deletions
diff --git a/core/graphics.inc b/core/graphics.inc index 2b8290fc..3ba51465 100644 --- a/core/graphics.inc +++ b/core/graphics.inc @@ -308,7 +308,7 @@ linear_color db 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 0 ; of this byte. UsingVGA db 0 - section .bss1 + section .bss2 alignb 4 LSSHeader equ $ LSSMagic resd 1 ; Magic number @@ -326,6 +326,5 @@ VGAFileBuf resb FILENAME_MAX ; Unmangled VGA image name VGAFileBufEnd equ $ VGAFileMBuf resb FILENAME_MAX ; Mangled VGA image name -; We need a buffer of 640+80 bytes. At this point, command_line should -; not be in use, so use that buffer. -VGARowBuffer equ command_line + alignb 4 +VGARowBuffer resb 640+80 ; Decompression buffer |