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/*

 * consolemap.c

 *

 * Mapping from internal code (such as Latin-1 or Unicode or IBM PC code)

 * to font positions.

 *

 * aeb, 950210

 */

#include <linux/kd.h>

#include <linux/errno.h>

#include <linux/mm.h>

#include <linux/malloc.h>

#include <asm/segment.h>

#include "consolemap.h"

static unsigned short translations[][256] = {

  /* 8-bit Latin-1 mapped to Unicode -- trivial mapping */

  {

    0x0000, 0x0001, 0x0002, 0x0003, 0x0004, 0x0005, 0x0006, 0x0007,

    0x0008, 0x0009, 0x000a, 0x000b, 0x000c, 0x000d, 0x000e, 0x000f,

    0x0010, 0x0011, 0x0012, 0x0013, 0x0014, 0x0015, 0x0016, 0x0017,

    0x0018, 0x0019, 0x001a, 0x001b, 0x001c, 0x001d, 0x001e, 0x001f,

    0x0020, 0x0021, 0x0022, 0x0023, 0x0024, 0x0025, 0x0026, 0x0027,

    0x0028, 0x0029, 0x002a, 0x002b, 0x002c, 0x002d, 0x002e, 0x002f,

    0x0030, 0x0031, 0x0032, 0x0033, 0x0034, 0x0035, 0x0036, 0x0037,

    0x0038, 0x0039, 0x003a, 0x003b, 0x003c, 0x003d, 0x003e, 0x003f,

    0x0040, 0x0041, 0x0042, 0x0043, 0x0044, 0x0045, 0x0046, 0x0047,

    0x0048, 0x0049, 0x004a, 0x004b, 0x004c, 0x004d, 0x004e, 0x004f,

    0x0050, 0x0051, 0x0052, 0x0053, 0x0054, 0x0055, 0x0056, 0x0057,

    0x0058, 0x0059, 0x005a, 0x005b, 0x005c, 0x005d, 0x005e, 0x005f,

    0x0060, 0x0061, 0x0062, 0x0063, 0x0064, 0x0065, 0x0066, 0x0067,

    0x0068, 0x0069, 0x006a, 0x006b, 0x006c, 0x006d, 0x006e, 0x006f,

    0x0070, 0x0071, 0x0072, 0x0073, 0x0074, 0x0075, 0x0076, 0x0077,

    0x0078, 0x0079, 0x007a, 0x007b, 0x007c, 0x007d, 0x007e, 0x007f,

    0x0080, 0x0081, 0x0082, 0x0083, 0x0084, 0x0085, 0x0086, 0x0087,

    0x0088, 0x0089, 0x008a, 0x008b, 0x008c, 0x008d, 0x008e, 0x008f,

    0x0090, 0x0091, 0x0092, 0x0093, 0x0094, 0x0095, 0x0096, 0x0097,

    0x0098, 0x0099, 0x009a, 0x009b, 0x009c, 0x009d, 0x009e, 0x009f,

    0x00a0, 0x00a1, 0x00a2, 0x00a3, 0x00a4, 0x00a5, 0x00a6, 0x00a7,

    0x00a8, 0x00a9, 0x00aa, 0x00ab, 0x00ac, 0x00ad, 0x00ae, 0x00af,

    0x00b0, 0x00b1, 0x00b2, 0x00b3, 0x00b4, 0x00b5, 0x00b6, 0x00b7,

    0x00b8, 0x00b9, 0x00ba, 0x00bb, 0x00bc, 0x00bd, 0x00be, 0x00bf,

    0x00c0, 0x00c1, 0x00c2, 0x00c3, 0x00c4, 0x00c5, 0x00c6, 0x00c7,

    0x00c8, 0x00c9, 0x00ca, 0x00cb, 0x00cc, 0x00cd, 0x00ce, 0x00cf,

    0x00d0, 0x00d1, 0x00d2, 0x00d3, 0x00d4, 0x00d5, 0x00d6, 0x00d7,

    0x00d8, 0x00d9, 0x00da, 0x00db, 0x00dc, 0x00dd, 0x00de, 0x00df,

    0x00e0, 0x00e1, 0x00e2, 0x00e3, 0x00e4, 0x00e5, 0x00e6, 0x00e7,

    0x00e8, 0x00e9, 0x00ea, 0x00eb, 0x00ec, 0x00ed, 0x00ee, 0x00ef,

    0x00f0, 0x00f1, 0x00f2, 0x00f3, 0x00f4, 0x00f5, 0x00f6, 0x00f7,

    0x00f8, 0x00f9, 0x00fa, 0x00fb, 0x00fc, 0x00fd, 0x00fe, 0x00ff

  },

  /* VT100 graphics mapped to Unicode */

  {

    0x0000, 0x0001, 0x0002, 0x0003, 0x0004, 0x0005, 0x0006, 0x0007,

    0x0008, 0x0009, 0x000a, 0x000b, 0x000c, 0x000d, 0x000e, 0x000f,

    0x0010, 0x0011, 0x0012, 0x0013, 0x0014, 0x0015, 0x0016, 0x0017,

    0x0018, 0x0019, 0x001a, 0x001b, 0x001c, 0x001d, 0x001e, 0x001f,

    0x0020, 0x0021, 0x0022, 0x0023, 0x0024, 0x0025, 0x0026, 0x0027,

    0x0028, 0x0029, 0x002a, 0x2192, 0x2190, 0x2191, 0x2193, 0x002f,

    0x2588, 0x0031, 0x0032, 0x0033, 0x0034, 0x0035, 0x0036, 0x0037,

    0x0038, 0x0039, 0x003a, 0x003b, 0x003c, 0x003d, 0x003e, 0x003f,

    0x0040, 0x0041, 0x0042, 0x0043, 0x0044, 0x0045, 0x0046, 0x0047,

    0x0048, 0x0049, 0x004a, 0x004b, 0x004c, 0x004d, 0x004e, 0x004f,

    0x0050, 0x0051, 0x0052, 0x0053, 0x0054, 0x0055, 0x0056, 0x0057,

    0x0058, 0x0059, 0x005a, 0x005b, 0x005c, 0x005d, 0x005e, 0x00a0,

    0x25c6, 0x2592, 0x2409, 0x240c, 0x240d, 0x240a, 0x00b0, 0x00b1,

    0x2591, 0x240b, 0x2518, 0x2510, 0x250c, 0x2514, 0x253c, 0xf800,

    0xf801, 0x2500, 0xf803, 0xf804, 0x251c, 0x2524, 0x2534, 0x252c,

    0x2502, 0x2264, 0x2265, 0x03c0, 0x2260, 0x00a3, 0x00b7, 0x007f,

    0x0080, 0x0081, 0x0082, 0x0083, 0x0084, 0x0085, 0x0086, 0x0087,

    0x0088, 0x0089, 0x008a, 0x008b, 0x008c, 0x008d, 0x008e, 0x008f,

    0x0090, 0x0091, 0x0092, 0x0093, 0x0094, 0x0095, 0x0096, 0x0097,

    0x0098, 0x0099, 0x009a, 0x009b, 0x009c, 0x009d, 0x009e, 0x009f,

    0x00a0, 0x00a1, 0x00a2, 0x00a3, 0x00a4, 0x00a5, 0x00a6, 0x00a7,

    0x00a8, 0x00a9, 0x00aa, 0x00ab, 0x00ac, 0x00ad, 0x00ae, 0x00af,

    0x00b0, 0x00b1, 0x00b2, 0x00b3, 0x00b4, 0x00b5, 0x00b6, 0x00b7,

    0x00b8, 0x00b9, 0x00ba, 0x00bb, 0x00bc, 0x00bd, 0x00be, 0x00bf,

    0x00c0, 0x00c1, 0x00c2, 0x00c3, 0x00c4, 0x00c5, 0x00c6, 0x00c7,

    0x00c8, 0x00c9, 0x00ca, 0x00cb, 0x00cc, 0x00cd, 0x00ce, 0x00cf,

    0x00d0, 0x00d1, 0x00d2, 0x00d3, 0x00d4, 0x00d5, 0x00d6, 0x00d7,

    0x00d8, 0x00d9, 0x00da, 0x00db, 0x00dc, 0x00dd, 0x00de, 0x00df,

    0x00e0, 0x00e1, 0x00e2, 0x00e3, 0x00e4, 0x00e5, 0x00e6, 0x00e7,

    0x00e8, 0x00e9, 0x00ea, 0x00eb, 0x00ec, 0x00ed, 0x00ee, 0x00ef,

    0x00f0, 0x00f1, 0x00f2, 0x00f3, 0x00f4, 0x00f5, 0x00f6, 0x00f7,

    0x00f8, 0x00f9, 0x00fa, 0x00fb, 0x00fc, 0x00fd, 0x00fe, 0x00ff

  },

  /* IBM Codepage 437 mapped to Unicode */

  {

    0x0000, 0x263a, 0x263b, 0x2665, 0x2666, 0x2663, 0x2660, 0x2022,

    0x25d8, 0x25cb, 0x25d9, 0x2642, 0x2640, 0x266a, 0x266b, 0x263c,

    0x25b6, 0x25c0, 0x2195, 0x203c, 0x00b6, 0x00a7, 0x25ac, 0x21a8,

    0x2191, 0x2193, 0x2192, 0x2190, 0x221f, 0x2194, 0x25b2, 0x25bc,

    0x0020, 0x0021, 0x0022, 0x0023, 0x0024, 0x0025, 0x0026, 0x0027,

    0x0028, 0x0029, 0x002a, 0x002b, 0x002c, 0x002d, 0x002e, 0x002f,

    0x0030, 0x0031, 0x0032, 0x0033, 0x0034, 0x0035, 0x0036, 0x0037,

    0x0038, 0x0039, 0x003a, 0x003b, 0x003c, 0x003d, 0x003e, 0x003f,

    0x0040, 0x0041, 0x0042, 0x0043, 0x0044, 0x0045, 0x0046, 0x0047,

    0x0048, 0x0049, 0x004a, 0x004b, 0x004c, 0x004d, 0x004e, 0x004f,

    0x0050, 0x0051, 0x0052, 0x0053, 0x0054, 0x0055, 0x0056, 0x0057,

    0x0058, 0x0059, 0x005a, 0x005b, 0x005c, 0x005d, 0x005e, 0x005f,

    0x0060, 0x0061, 0x0062, 0x0063, 0x0064, 0x0065, 0x0066, 0x0067,

    0x0068, 0x0069, 0x006a, 0x006b, 0x006c, 0x006d, 0x006e, 0x006f,

    0x0070, 0x0071, 0x0072, 0x0073, 0x0074, 0x0075, 0x0076, 0x0077,

    0x0078, 0x0079, 0x007a, 0x007b, 0x007c, 0x007d, 0x007e, 0x2302,

    0x00c7, 0x00fc, 0x00e9, 0x00e2, 0x00e4, 0x00e0, 0x00e5, 0x00e7,

    0x00ea, 0x00eb, 0x00e8, 0x00ef, 0x00ee, 0x00ec, 0x00c4, 0x00c5,

    0x00c9, 0x00e6, 0x00c6, 0x00f4, 0x00f6, 0x00f2, 0x00fb, 0x00f9,

    0x00ff, 0x00d6, 0x00dc, 0x00a2, 0x00a3, 0x00a5, 0x20a7, 0x0192,

    0x00e1, 0x00ed, 0x00f3, 0x00fa, 0x00f1, 0x00d1, 0x00aa, 0x00ba,

    0x00bf, 0x2310, 0x00ac, 0x00bd, 0x00bc, 0x00a1, 0x00ab, 0x00bb,

    0x2591, 0x2592, 0x2593, 0x2502, 0x2524, 0x2561, 0x2562, 0x2556,

    0x2555, 0x2563, 0x2551, 0x2557, 0x255d, 0x255c, 0x255b, 0x2510,

    0x2514, 0x2534, 0x252c, 0x251c, 0x2500, 0x253c, 0x255e, 0x255f,

    0x255a, 0x2554, 0x2569, 0x2566, 0x2560, 0x2550, 0x256c, 0x2567,

    0x2568, 0x2564, 0x2565, 0x2559, 0x2558, 0x2552, 0x2553, 0x256b,

    0x256a, 0x2518, 0x250c, 0x2588, 0x2584, 0x258c, 0x2590, 0x2580,

    0x03b1, 0x00df, 0x0393, 0x03c0, 0x03a3, 0x03c3, 0x00b5, 0x03c4,

    0x03a6, 0x0398, 0x03a9, 0x03b4, 0x221e, 0x03c6, 0x03b5, 0x2229,

    0x2261, 0x00b1, 0x2265, 0x2264, 0x2320, 0x2321, 0x00f7, 0x2248,

    0x00b0, 0x2219, 0x00b7, 0x221a, 0x207f, 0x00b2, 0x25a0, 0x00a0

  },

  /* User mapping -- default to codes for direct font mapping */

  {

    0xf000, 0xf001, 0xf002, 0xf003, 0xf004, 0xf005, 0xf006, 0xf007,

    0xf008, 0xf009, 0xf00a, 0xf00b, 0xf00c, 0xf00d, 0xf00e, 0xf00f,

    0xf010, 0xf011, 0xf012, 0xf013, 0xf014, 0xf015, 0xf016, 0xf017,

    0xf018, 0xf019, 0xf01a, 0xf01b, 0xf01c, 0xf01d, 0xf01e, 0xf01f,

    0xf020, 0xf021, 0xf022, 0xf023, 0xf024, 0xf025, 0xf026, 0xf027,

    0xf028, 0xf029, 0xf02a, 0xf02b, 0xf02c, 0xf02d, 0xf02e, 0xf02f,

    0xf030, 0xf031, 0xf032, 0xf033, 0xf034, 0xf035, 0xf036, 0xf037,

    0xf038, 0xf039, 0xf03a, 0xf03b, 0xf03c, 0xf03d, 0xf03e, 0xf03f,

    0xf040, 0xf041, 0xf042, 0xf043, 0xf044, 0xf045, 0xf046, 0xf047,

    0xf048, 0xf049, 0xf04a, 0xf04b, 0xf04c, 0xf04d, 0xf04e, 0xf04f,

    0xf050, 0xf051, 0xf052, 0xf053, 0xf054, 0xf055, 0xf056, 0xf057,

    0xf058, 0xf059, 0xf05a, 0xf05b, 0xf05c, 0xf05d, 0xf05e, 0xf05f,

    0xf060, 0xf061, 0xf062, 0xf063, 0xf064, 0xf065, 0xf066, 0xf067,

    0xf068, 0xf069, 0xf06a, 0xf06b, 0xf06c, 0xf06d, 0xf06e, 0xf06f,

    0xf070, 0xf071, 0xf072, 0xf073, 0xf074, 0xf075, 0xf076, 0xf077,

    0xf078, 0xf079, 0xf07a, 0xf07b, 0xf07c, 0xf07d, 0xf07e, 0xf07f,

    0xf080, 0xf081, 0xf082, 0xf083, 0xf084, 0xf085, 0xf086, 0xf087,

    0xf088, 0xf089, 0xf08a, 0xf08b, 0xf08c, 0xf08d, 0xf08e, 0xf08f,

    0xf090, 0xf091, 0xf092, 0xf093, 0xf094, 0xf095, 0xf096, 0xf097,

    0xf098, 0xf099, 0xf09a, 0xf09b, 0xf09c, 0xf09d, 0xf09e, 0xf09f,

    0xf0a0, 0xf0a1, 0xf0a2, 0xf0a3, 0xf0a4, 0xf0a5, 0xf0a6, 0xf0a7,

    0xf0a8, 0xf0a9, 0xf0aa, 0xf0ab, 0xf0ac, 0xf0ad, 0xf0ae, 0xf0af,

    0xf0b0, 0xf0b1, 0xf0b2, 0xf0b3, 0xf0b4, 0xf0b5, 0xf0b6, 0xf0b7,

    0xf0b8, 0xf0b9, 0xf0ba, 0xf0bb, 0xf0bc, 0xf0bd, 0xf0be, 0xf0bf,

    0xf0c0, 0xf0c1, 0xf0c2, 0xf0c3, 0xf0c4, 0xf0c5, 0xf0c6, 0xf0c7,

    0xf0c8, 0xf0c9, 0xf0ca, 0xf0cb, 0xf0cc, 0xf0cd, 0xf0ce, 0xf0cf,

    0xf0d0, 0xf0d1, 0xf0d2, 0xf0d3, 0xf0d4, 0xf0d5, 0xf0d6, 0xf0d7,

    0xf0d8, 0xf0d9, 0xf0da, 0xf0db, 0xf0dc, 0xf0dd, 0xf0de, 0xf0df,

    0xf0e0, 0xf0e1, 0xf0e2, 0xf0e3, 0xf0e4, 0xf0e5, 0xf0e6, 0xf0e7,

    0xf0e8, 0xf0e9, 0xf0ea, 0xf0eb, 0xf0ec, 0xf0ed, 0xf0ee, 0xf0ef,

    0xf0f0, 0xf0f1, 0xf0f2, 0xf0f3, 0xf0f4, 0xf0f5, 0xf0f6, 0xf0f7,

    0xf0f8, 0xf0f9, 0xf0fa, 0xf0fb, 0xf0fc, 0xf0fd, 0xf0fe, 0xf0ff

  }

};

/* The standard kernel character-to-font mappings are not invertible

   -- this is just a best effort. */

#define MAX_GLYPH 512           /* Max possible glyph value */

static unsigned char * inv_translate = NULL;

static unsigned char inv_norm_transl[MAX_GLYPH];

static unsigned char * inverse_translations[4] = { NULL, NULL, NULL, NULL };

static void set_inverse_transl(int i)

{

        int j, glyph;

        unsigned short *p = translations[i];

        unsigned char *q = inverse_translations[i];

        if (!q) {

                /* slightly messy to avoid calling kmalloc too early */

                q = inverse_translations[i] = ((i == LAT1_MAP)

                        ? inv_norm_transl

                        : (unsigned char *) kmalloc(MAX_GLYPH, GFP_KERNEL));

                if (!q)

                        return;

        }

        for (j=0; j<MAX_GLYPH; j++)

                q[j] = 0;

        for (j=0; j<E_TABSZ; j++) {

                glyph = conv_uni_to_pc(p[j]);

                if (glyph >= 0 && glyph < MAX_GLYPH && q[glyph] < 32) {

                        /* prefer '-' above SHY etc. */

                        q[glyph] = j;

                }

        }

}

unsigned short *set_translate(int m)

{

        if (!inverse_translations[m])

                set_inverse_transl(m);

        inv_translate = inverse_translations[m];

        return translations[m];

}

/*

 * Inverse translation is impossible for several reasons:

 * 1. The font<->character maps are not 1-1.

 * 2. The text may have been written while a different translation map

 *    was active, or using Unicode.

 * Still, it is now possible to a certain extent to cut and paste non-ASCII.

 */

unsigned char inverse_translate(int glyph) {

        if ( glyph < 0 || glyph >= MAX_GLYPH )

                return 0;

        else

                return ((inv_translate && inv_translate[glyph])

                        ? inv_translate[glyph]

                        : (unsigned char)(glyph & 0xff));

}

/*

 * Load customizable translation table

 * arg points to a 256 byte translation table.

 *

 * The "old" variants are for translation directly to font (using the

 * 0xf000-0xf0ff "transparent" Unicodes) whereas the "new" variants set

 * Unicodes explicitly.

 */

int con_set_trans_old(unsigned char * arg)

{

        int i;

        unsigned short *p = translations[USER_MAP];

        i = verify_area(VERIFY_READ, (void *)arg, E_TABSZ);

        if (i)

                return i;

        for (i=0; i<E_TABSZ ; i++)

                p[i] = UNI_DIRECT_BASE | get_user(arg+i);

        set_inverse_transl(USER_MAP);

        return 0;

}

int con_get_trans_old(unsigned char * arg)

{

        int i, ch;

        unsigned short *p = translations[USER_MAP];

        i = verify_area(VERIFY_WRITE, (void *)arg, E_TABSZ);

        if (i)

                return i;

        for (i=0; i<E_TABSZ ; i++)

          {

            ch = conv_uni_to_pc(p[i]);

            put_user((ch & ~0xff) ? 0 : ch, arg+i);

          }

        return 0;

}

int con_set_trans_new(ushort * arg)

{

        int i;

        unsigned short *p = translations[USER_MAP];

        i = verify_area(VERIFY_READ, (void *)arg,

                        E_TABSZ*sizeof(unsigned short));

        if (i)

                return i;

        for (i=0; i<E_TABSZ ; i++)

          p[i] = get_user(arg+i);

        set_inverse_transl(USER_MAP);

        return 0;

}

int con_get_trans_new(ushort * arg)

{

        int i;

        unsigned short *p = translations[USER_MAP];

        i = verify_area(VERIFY_WRITE, (void *)arg,

                        E_TABSZ*sizeof(unsigned short));

        if (i)

                return i;

        for (i=0; i<E_TABSZ ; i++)

          put_user(p[i], arg+i);

        return 0;

}

/*

 * Unicode -> current font conversion

 *

 * A font has at most 512 chars, usually 256.

 * But one font position may represent several Unicode chars.

 * A hashtable is somewhat of a pain to deal with, so use a

 * "paged table" instead.  Simulation has shown the memory cost of

 * this 3-level paged table scheme to be comparable to a hash table.

 */

#include "uni_hash.tbl"         /* Include hash tables & parameters */

int hashtable_contents_valid = 0; /* Use ASCII-only mode for bootup*/

static u16 **uni_pagedir[32] =

{

  NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,

  NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,

  NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,

  NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL

};

static int

con_insert_unipair(u_short unicode, u_short fontpos)

{

  int i, n;

  u16 **p1, *p2;

  if ( !(p1 = uni_pagedir[n = unicode >> 11]) )

    {

      p1 = uni_pagedir[n] = kmalloc(32*sizeof(u16 *), GFP_KERNEL);

      if ( !p1 )

        return -ENOMEM;

      for ( i = 0 ; i < 32 ; i++ )

        p1[i] = NULL;

    }

  if ( !(p2 = p1[n = (unicode >> 6) & 0x1f]) )

    {

      p2 = p1[n] = kmalloc(64*sizeof(u16), GFP_KERNEL);

      if ( !p2 )

        return -ENOMEM;

      for ( i = 0 ; i < 64 ; i++ )

        p2[i] = 0xffff;         /* No glyph for this character (yet) */

    }

  p2[unicode & 0x3f] = fontpos;

  return 0;

}

/* ui is a leftover from using a hashtable, but might be used again */

void

con_clear_unimap(struct unimapinit *ui)

{

  int i, j;

  u16 **p1;

  for ( i = 0 ; i < 32 ; i++ )

    {

      if ( (p1 = uni_pagedir[i]) != NULL )

        {

          for ( j = 0 ; j < 32 ; j++ )

            {

              if ( p1[j] )

                kfree(p1[j]);

            }

          kfree(p1);

        }

      uni_pagedir[i] = NULL;

    }

  hashtable_contents_valid = 1;

}

int

con_set_unimap(ushort ct, struct unipair *list)

{

  int err = 0, err1, i;

  while( ct-- )

    {

      if ( (err1 = con_insert_unipair(get_user(&list->unicode),

                                      get_user(&list->fontpos))) != 0 )

        err = err1;

      list++;

    }

  for ( i = 0 ; i <= 3 ; i++ )

    set_inverse_transl(i); /* Update all inverse translations */

  return err;

}

/* Loads the unimap for the hardware font, as defined in uni_hash.tbl.

   The representation used was the most compact I could come up

   with.  This routine is executed at sys_setup time, and when the

   PIO_FONTRESET ioctl is called. */

void

con_set_default_unimap(void)

{

  int i, j;

  u16 *p;

  /* The default font is always 256 characters */

  con_clear_unimap(NULL);

  p = dfont_unitable;

  for ( i = 0 ; i < 256 ; i++ )

    for ( j = dfont_unicount[i] ; j ; j-- )

      con_insert_unipair(*(p++), i);

  for ( i = 0 ; i <= 3 ; i++ )

    set_inverse_transl(i);      /* Update all inverse translations */

}

int

con_get_unimap(ushort ct, ushort *uct, struct unipair *list){

        int i, j, k, ect;

        u16 **p1, *p2;

        ect = 0;

        if (hashtable_contents_valid)

          {

            for ( i = 0 ; i < 32 ; i++ )

              if ( (p1 = uni_pagedir[i]) != NULL )

                for ( j = 0 ; j < 32 ; j++ )

                  if ( (p2 = *(p1++)) != NULL )

                    for ( k = 0 ; k < 64 ; k++ )

                      {

                        if ( *p2 < MAX_GLYPH && ect++ < ct )

                          {

                            put_user((u_short)((i<<11)+(j<<6)+k),

                                     &list->unicode);

                            put_user((u_short) *p2, &list->fontpos);

                            list++;

                          }

                        p2++;

                      }

          }

        put_user(ect, uct);

        return ((ect <= ct) ? 0 : -ENOMEM);

}

int

conv_uni_to_pc(long ucs)

{

  int h;

  u16 **p1, *p2;

  /* Only 16-bit codes supported at this time */

  if (ucs > 0xffff)

    ucs = 0xfffd;               /* U+FFFD: REPLACEMENT CHARACTER */

  else if (ucs < 0x20 || ucs >= 0xfffe)

    return -1;          /* Not a printable character */

  else if (ucs == 0xfeff || (ucs >= 0x200a && ucs <= 0x200f))

    return -2;                  /* Zero-width space */

  /*

   * UNI_DIRECT_BASE indicates the start of the region in the User Zone

   * which always has a 1:1 mapping to the currently loaded font.  The

   * UNI_DIRECT_MASK indicates the bit span of the region.

   */

  else if ( (ucs & ~UNI_DIRECT_MASK) == UNI_DIRECT_BASE )

    return ucs & UNI_DIRECT_MASK;

  if (!hashtable_contents_valid)

    return -3;

  if ( (p1 = uni_pagedir[ucs >> 11]) &&

      (p2 = p1[(ucs >> 6) & 0x1f]) &&

      (h = p2[ucs & 0x3f]) < MAX_GLYPH )

    return h;

  return -4;            /* not found */

}

/*

 * This is called at sys_setup time, after memory and the console are

 * initialized.  It must be possible to call kmalloc(..., GFP_KERNEL)

 * from this function, hence the call from sys_setup.

 */

void

console_map_init(void)

{

  con_set_default_unimap();

}