diff options
author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 18:20:36 -0400 |
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committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 18:20:36 -0400 |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /include/linux/vt_buffer.h |
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
Diffstat (limited to 'include/linux/vt_buffer.h')
-rw-r--r-- | include/linux/vt_buffer.h | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/include/linux/vt_buffer.h b/include/linux/vt_buffer.h new file mode 100644 index 000000000000..1f7ba3629053 --- /dev/null +++ b/include/linux/vt_buffer.h | |||
@@ -0,0 +1,64 @@ | |||
1 | /* | ||
2 | * include/linux/vt_buffer.h -- Access to VT screen buffer | ||
3 | * | ||
4 | * (c) 1998 Martin Mares <mj@ucw.cz> | ||
5 | * | ||
6 | * This is a set of macros and functions which are used in the | ||
7 | * console driver and related code to access the screen buffer. | ||
8 | * In most cases the console works with simple in-memory buffer, | ||
9 | * but when handling hardware text mode consoles, we store | ||
10 | * the foreground console directly in video memory. | ||
11 | */ | ||
12 | |||
13 | #ifndef _LINUX_VT_BUFFER_H_ | ||
14 | #define _LINUX_VT_BUFFER_H_ | ||
15 | |||
16 | #include <linux/config.h> | ||
17 | |||
18 | #if defined(CONFIG_VGA_CONSOLE) || defined(CONFIG_MDA_CONSOLE) | ||
19 | #include <asm/vga.h> | ||
20 | #endif | ||
21 | |||
22 | #ifndef VT_BUF_HAVE_RW | ||
23 | #define scr_writew(val, addr) (*(addr) = (val)) | ||
24 | #define scr_readw(addr) (*(addr)) | ||
25 | #define scr_memcpyw(d, s, c) memcpy(d, s, c) | ||
26 | #define scr_memmovew(d, s, c) memmove(d, s, c) | ||
27 | #define VT_BUF_HAVE_MEMCPYW | ||
28 | #define VT_BUF_HAVE_MEMMOVEW | ||
29 | #endif | ||
30 | |||
31 | #ifndef VT_BUF_HAVE_MEMSETW | ||
32 | static inline void scr_memsetw(u16 *s, u16 c, unsigned int count) | ||
33 | { | ||
34 | count /= 2; | ||
35 | while (count--) | ||
36 | scr_writew(c, s++); | ||
37 | } | ||
38 | #endif | ||
39 | |||
40 | #ifndef VT_BUF_HAVE_MEMCPYW | ||
41 | static inline void scr_memcpyw(u16 *d, const u16 *s, unsigned int count) | ||
42 | { | ||
43 | count /= 2; | ||
44 | while (count--) | ||
45 | scr_writew(scr_readw(s++), d++); | ||
46 | } | ||
47 | #endif | ||
48 | |||
49 | #ifndef VT_BUF_HAVE_MEMMOVEW | ||
50 | static inline void scr_memmovew(u16 *d, const u16 *s, unsigned int count) | ||
51 | { | ||
52 | if (d < s) | ||
53 | scr_memcpyw(d, s, count); | ||
54 | else { | ||
55 | count /= 2; | ||
56 | d += count; | ||
57 | s += count; | ||
58 | while (count--) | ||
59 | scr_writew(scr_readw(--s), --d); | ||
60 | } | ||
61 | } | ||
62 | #endif | ||
63 | |||
64 | #endif | ||