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author | Linus Torvalds <torvalds@linux-foundation.org> | 2009-06-10 19:14:41 -0400 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-06-10 19:14:41 -0400 |
commit | bec706838ec2f9c8c2b99e88a1270d7cba159b06 (patch) | |
tree | 96ec3ccbab3596dee79ef874483238853351a4f8 /arch/x86/boot/video.h | |
parent | bb7762961d3ce745688e9050e914c1d3f980268d (diff) | |
parent | ee0736627d3347be0be2769fa7b26431f9726c9d (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.h | 14 |
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 */ | |||
112 | extern int do_restore; /* Restore screen contents */ | 112 | extern int do_restore; /* Restore screen contents */ |
113 | extern int graphic_mode; /* Graphics mode with linear frame buffer */ | 113 | extern 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 */ |
130 | static inline u8 in_idx(u16 port, u8 index) | 116 | static inline u8 in_idx(u16 port, u8 index) |
131 | { | 117 | { |