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Make console charset translation optional

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By turning off the new CONSOLE_TRANSLATIONS option and dropping the
associated code and tables from the kernel, we can save about 7KiB.

Taken from linux-tiny project by Tim Bird and mangled further by dwmw2.

Signed-off-by: Tim Bird <tim.bird@am.sony.com>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
This commit is contained in:
David Woodhouse
2008-06-03 14:59:40 +01:00
parent 1beee8dc8c
commit a29ccf6f82
5 changed files with 44 additions and 3 deletions
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14
include/linux/consolemap.h
View File

@@ -3,6 +3,9 @@
*
* Interface between console.c, selection.c and consolemap.c
*/
#ifndef __LINUX_CONSOLEMAP_H__
#define __LINUX_CONSOLEMAP_H__
#define LAT1_MAP 0
#define GRAF_MAP 1
#define IBMPC_MAP 2
@@ -10,6 +13,7 @@
#include <linux/types.h>
#ifdef CONFIG_CONSOLE_TRANSLATIONS
struct vc_data;
extern u16 inverse_translate(struct vc_data *conp, int glyph, int use_unicode);
@@ -18,3 +22,13 @@ extern int conv_uni_to_pc(struct vc_data *conp, long ucs);
extern u32 conv_8bit_to_uni(unsigned char c);
extern int conv_uni_to_8bit(u32 uni);
void console_map_init(void);
#else
#define inverse_translate(conp, glyph, uni) ((uint16_t)glyph)
#define set_translate(m, vc) ((unsigned short *)NULL)
#define conv_uni_to_pc(conp, ucs) ((int) (ucs > 0xff ? -1: ucs))
#define conv_8bit_to_uni(c) ((uint32_t)(c))
#define conv_uni_to_8bit(c) ((int) ((c) & 0xff))
#define console_map_init(c) do { ; } while (0)
#endif /* CONFIG_CONSOLE_TRANSLATIONS */
#endif /* __LINUX_CONSOLEMAP_H__ */

19
include/linux/vt_kern.h
View File

@@ -12,6 +12,7 @@
#include <linux/mutex.h>
#include <linux/console_struct.h>
#include <linux/mm.h>
#include <linux/consolemap.h>
/*
* Presently, a lot of graphics programs do not restore the contents of
@@ -54,6 +55,7 @@ void redraw_screen(struct vc_data *vc, int is_switch);
struct tty_struct;
int tioclinux(struct tty_struct *tty, unsigned long arg);
#ifdef CONFIG_CONSOLE_TRANSLATIONS
/* consolemap.c */
struct unimapinit;
@@ -71,6 +73,23 @@ void con_free_unimap(struct vc_data *vc);
void con_protect_unimap(struct vc_data *vc, int rdonly);
int con_copy_unimap(struct vc_data *dst_vc, struct vc_data *src_vc);
#define vc_translate(vc, c) ((vc)->vc_translate[(c) | \
(vc)->vc_toggle_meta ? 0x80 : 0])
#else
#define con_set_trans_old(arg) (0)
#define con_get_trans_old(arg) (-EINVAL)
#define con_set_trans_new(arg) (0)
#define con_get_trans_new(arg) (-EINVAL)
#define con_clear_unimap(vc, ui) (0)
#define con_set_unimap(vc, ct, list) (0)
#define con_set_default_unimap(vc) (0)
#define con_copy_unimap(d, s) (0)
#define con_get_unimap(vc, ct, uct, list) (-EINVAL)
#define con_free_unimap(vc) do { ; } while (0)
#define vc_translate(vc, c) (c)
#endif
/* vt.c */
int vt_waitactive(int vt);
void change_console(struct vc_data *new_vc);