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2a709f28fa
* 0day explit mitigation * Memory corruption prevention * Privilege escalation prevention * Buffer over flow prevention * File System corruption defense * Thread escape prevention This may very well be the most intensive inclusion to BrooklynR. This will not be part of an x86 suite nor it will be released as tool kit. The security core toolkit will remain part of kernel base.
60 lines
1.3 KiB
C
60 lines
1.3 KiB
C
/*
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* include/linux/vt_buffer.h -- Access to VT screen buffer
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*
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* (c) 1998 Martin Mares <mj@ucw.cz>
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*
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* This is a set of macros and functions which are used in the
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* console driver and related code to access the screen buffer.
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* In most cases the console works with simple in-memory buffer,
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* but when handling hardware text mode consoles, we store
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* the foreground console directly in video memory.
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*/
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#ifndef _LINUX_VT_BUFFER_H_
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#define _LINUX_VT_BUFFER_H_
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#if defined(CONFIG_VGA_CONSOLE) || defined(CONFIG_MDA_CONSOLE)
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#include <asm/vga.h>
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#endif
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#ifndef VT_BUF_HAVE_RW
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#define scr_writew(val, addr) (*(addr) = (val))
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#define scr_readw(addr) (*(addr))
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#endif
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#ifndef VT_BUF_HAVE_MEMSETW
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static inline void scr_memsetw(u16 *s, u16 c, unsigned int count)
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{
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count /= 2;
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while (count--)
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scr_writew(c, s++);
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}
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#endif
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#ifndef VT_BUF_HAVE_MEMCPYW
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static inline void scr_memcpyw(u16 *d, const u16 *s, unsigned int count)
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{
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count /= 2;
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while (count--)
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scr_writew(scr_readw(s++), d++);
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}
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#endif
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#ifndef VT_BUF_HAVE_MEMMOVEW
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static inline void scr_memmovew(u16 *d, const u16 *s, unsigned int count)
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{
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if (d < s)
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scr_memcpyw(d, s, count);
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else {
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count /= 2;
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d += count;
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s += count;
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while (count--)
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scr_writew(scr_readw(--s), --d);
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}
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}
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#endif
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#endif
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