diff options
Diffstat (limited to 'drivers/char/consolemap.c')
| -rw-r--r-- | drivers/char/consolemap.c | 78 |
1 files changed, 72 insertions, 6 deletions
diff --git a/drivers/char/consolemap.c b/drivers/char/consolemap.c index fd40b959afdd..4b3916f54909 100644 --- a/drivers/char/consolemap.c +++ b/drivers/char/consolemap.c @@ -177,6 +177,7 @@ struct uni_pagedir { unsigned long refcount; unsigned long sum; unsigned char *inverse_translations[4]; + u16 *inverse_trans_unicode; int readonly; }; @@ -207,6 +208,41 @@ static void set_inverse_transl(struct vc_data *conp, struct uni_pagedir *p, int } } +static void set_inverse_trans_unicode(struct vc_data *conp, + struct uni_pagedir *p) +{ + int i, j, k, glyph; + u16 **p1, *p2; + u16 *q; + + if (!p) return; + q = p->inverse_trans_unicode; + if (!q) { + q = p->inverse_trans_unicode = + kmalloc(MAX_GLYPH * sizeof(u16), GFP_KERNEL); + if (!q) + return; + } + memset(q, 0, MAX_GLYPH * sizeof(u16)); + + for (i = 0; i < 32; i++) { + p1 = p->uni_pgdir[i]; + if (!p1) + continue; + for (j = 0; j < 32; j++) { + p2 = p1[j]; + if (!p2) + continue; + for (k = 0; k < 64; k++) { + glyph = p2[k]; + if (glyph >= 0 && glyph < MAX_GLYPH + && q[glyph] < 32) + q[glyph] = (i << 11) + (j << 6) + k; + } + } + } +} + unsigned short *set_translate(int m, struct vc_data *vc) { inv_translate[vc->vc_num] = m; @@ -217,19 +253,29 @@ unsigned short *set_translate(int m, struct vc_data *vc) * 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. + * was active. * Still, it is now possible to a certain extent to cut and paste non-ASCII. */ -unsigned char inverse_translate(struct vc_data *conp, int glyph) +u16 inverse_translate(struct vc_data *conp, int glyph, int use_unicode) { struct uni_pagedir *p; + int m; if (glyph < 0 || glyph >= MAX_GLYPH) return 0; - else if (!(p = (struct uni_pagedir *)*conp->vc_uni_pagedir_loc) || - !p->inverse_translations[inv_translate[conp->vc_num]]) + else if (!(p = (struct uni_pagedir *)*conp->vc_uni_pagedir_loc)) return glyph; - else - return p->inverse_translations[inv_translate[conp->vc_num]][glyph]; + else if (use_unicode) { + if (!p->inverse_trans_unicode) + return glyph; + else + return p->inverse_trans_unicode[glyph]; + } else { + m = inv_translate[conp->vc_num]; + if (!p->inverse_translations[m]) + return glyph; + else + return p->inverse_translations[m][glyph]; + } } static void update_user_maps(void) @@ -243,6 +289,7 @@ static void update_user_maps(void) p = (struct uni_pagedir *)*vc_cons[i].d->vc_uni_pagedir_loc; if (p && p != q) { set_inverse_transl(vc_cons[i].d, p, USER_MAP); + set_inverse_trans_unicode(vc_cons[i].d, p); q = p; } } @@ -353,6 +400,10 @@ static void con_release_unimap(struct uni_pagedir *p) kfree(p->inverse_translations[i]); p->inverse_translations[i] = NULL; } + if (p->inverse_trans_unicode) { + kfree(p->inverse_trans_unicode); + p->inverse_trans_unicode = NULL; + } } void con_free_unimap(struct vc_data *vc) @@ -511,6 +562,7 @@ int con_set_unimap(struct vc_data *vc, ushort ct, struct unipair __user *list) for (i = 0; i <= 3; i++) set_inverse_transl(vc, p, i); /* Update all inverse translations */ + set_inverse_trans_unicode(vc, p); return err; } @@ -561,6 +613,7 @@ int con_set_default_unimap(struct vc_data *vc) for (i = 0; i <= 3; i++) set_inverse_transl(vc, p, i); /* Update all inverse translations */ + set_inverse_trans_unicode(vc, p); dflt = p; return err; } @@ -617,6 +670,19 @@ void con_protect_unimap(struct vc_data *vc, int rdonly) p->readonly = rdonly; } +/* may be called during an interrupt */ +u32 conv_8bit_to_uni(unsigned char c) +{ + /* + * Always use USER_MAP. This function is used by the keyboard, + * which shouldn't be affected by G0/G1 switching, etc. + * If the user map still contains default values, i.e. the + * direct-to-font mapping, then assume user is using Latin1. + */ + unsigned short uni = translations[USER_MAP][c]; + return uni == (0xf000 | c) ? c : uni; +} + int conv_uni_to_pc(struct vc_data *conp, long ucs) { |