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authorBenjamin Herrenschmidt <benh@kernel.crashing.org>2009-06-12 02:53:38 -0400
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>2009-06-12 02:53:38 -0400
commitbc47ab0241c7c86da4f5e5f82fbca7d45387c18d (patch)
treeb9c33ae8b6de43e44cc5fcbaa3e4a15f18a5ed42 /arch/x86/boot/video.h
parent37f9ef553bed630957e025504cdcbc76f5de49d5 (diff)
parent8ebf975608aaebd7feb33d77f07ba21a6380e086 (diff)
Merge commit 'origin/master' into next
Manual merge of: arch/powerpc/kernel/asm-offsets.c
Diffstat (limited to 'arch/x86/boot/video.h')
-rw-r--r--arch/x86/boot/video.h14
1 files changed, 0 insertions, 14 deletions
diff --git a/arch/x86/boot/video.h b/arch/x86/boot/video.h
index ee63f5d14461..5bb174a997fc 100644
--- a/arch/x86/boot/video.h
+++ b/arch/x86/boot/video.h
@@ -112,20 +112,6 @@ extern int force_x, force_y; /* Don't query the BIOS for cols/rows */
112extern int do_restore; /* Restore screen contents */ 112extern int do_restore; /* Restore screen contents */
113extern int graphic_mode; /* Graphics mode with linear frame buffer */ 113extern int graphic_mode; /* Graphics mode with linear frame buffer */
114 114
115/*
116 * int $0x10 is notorious for touching registers it shouldn't.
117 * gcc doesn't like %ebp being clobbered, so define it as a push/pop
118 * sequence here.
119 *
120 * A number of systems, including the original PC can clobber %bp in
121 * certain circumstances, like when scrolling. There exists at least
122 * one Trident video card which could clobber DS under a set of
123 * circumstances that we are unlikely to encounter (scrolling when
124 * using an extended graphics mode of more than 800x600 pixels), but
125 * it's cheap insurance to deal with that here.
126 */
127#define INT10 "pushl %%ebp; pushw %%ds; int $0x10; popw %%ds; popl %%ebp"
128
129/* Accessing VGA indexed registers */ 115/* Accessing VGA indexed registers */
130static inline u8 in_idx(u16 port, u8 index) 116static inline u8 in_idx(u16 port, u8 index)
131{ 117{