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author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 15:20:36 -0700 |
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committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 15:20:36 -0700 |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /include/linux/vt_buffer.h | |
download | kernel_samsung_espresso10-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.zip kernel_samsung_espresso10-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.tar.gz kernel_samsung_espresso10-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.tar.bz2 |
Linux-2.6.12-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 0000000..1f7ba36 --- /dev/null +++ b/include/linux/vt_buffer.h @@ -0,0 +1,64 @@ +/* + * include/linux/vt_buffer.h -- Access to VT screen buffer + * + * (c) 1998 Martin Mares <mj@ucw.cz> + * + * This is a set of macros and functions which are used in the + * console driver and related code to access the screen buffer. + * In most cases the console works with simple in-memory buffer, + * but when handling hardware text mode consoles, we store + * the foreground console directly in video memory. + */ + +#ifndef _LINUX_VT_BUFFER_H_ +#define _LINUX_VT_BUFFER_H_ + +#include <linux/config.h> + +#if defined(CONFIG_VGA_CONSOLE) || defined(CONFIG_MDA_CONSOLE) +#include <asm/vga.h> +#endif + +#ifndef VT_BUF_HAVE_RW +#define scr_writew(val, addr) (*(addr) = (val)) +#define scr_readw(addr) (*(addr)) +#define scr_memcpyw(d, s, c) memcpy(d, s, c) +#define scr_memmovew(d, s, c) memmove(d, s, c) +#define VT_BUF_HAVE_MEMCPYW +#define VT_BUF_HAVE_MEMMOVEW +#endif + +#ifndef VT_BUF_HAVE_MEMSETW +static inline void scr_memsetw(u16 *s, u16 c, unsigned int count) +{ + count /= 2; + while (count--) + scr_writew(c, s++); +} +#endif + +#ifndef VT_BUF_HAVE_MEMCPYW +static inline void scr_memcpyw(u16 *d, const u16 *s, unsigned int count) +{ + count /= 2; + while (count--) + scr_writew(scr_readw(s++), d++); +} +#endif + +#ifndef VT_BUF_HAVE_MEMMOVEW +static inline void scr_memmovew(u16 *d, const u16 *s, unsigned int count) +{ + if (d < s) + scr_memcpyw(d, s, count); + else { + count /= 2; + d += count; + s += count; + while (count--) + scr_writew(scr_readw(--s), --d); + } +} +#endif + +#endif |