aboutsummaryrefslogtreecommitdiffstats
path: root/arch/x86/boot/video.h
diff options
context:
space:
mode:
authorLinus Torvalds <torvalds@linux-foundation.org>2009-06-10 19:14:41 -0400
committerLinus Torvalds <torvalds@linux-foundation.org>2009-06-10 19:14:41 -0400
commitbec706838ec2f9c8c2b99e88a1270d7cba159b06 (patch)
tree96ec3ccbab3596dee79ef874483238853351a4f8 /arch/x86/boot/video.h
parentbb7762961d3ce745688e9050e914c1d3f980268d (diff)
parentee0736627d3347be0be2769fa7b26431f9726c9d (diff)
Merge branch 'x86-setup-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'x86-setup-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: x86, setup: fix comment in the "glove box" code x86, setup: "glove box" BIOS interrupts in the video code x86, setup: "glove box" BIOS interrupts in the MCA code x86, setup: "glove box" BIOS interrupts in the EDD code x86, setup: "glove box" BIOS interrupts in the APM code x86, setup: "glove box" BIOS interrupts in the core boot code x86, setup: "glove box" BIOS calls -- infrastructure
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{