Mercurial > sdl-ios-xcode
view src/timer/mint/SDL_vbltimer.S @ 4170:092c0bc69155 SDL-1.2
Fixed bug #618
Description From Tim Angus 2008-08-30 12:23:56 (-) [reply]
As we all know SDL 1.2 doesn't handle dead keys well since one key press
potentially equals two (or more) characters. For example, on many layouts,
keying <backquote>,<space> results in <no character>,<backquote><space>. Since
the unicode member of the SDL_keysym struct only has room for one character,
only one can be returned.
On Linux, the first character is returned. On Windows however, unless the exact
number of characters generated by the keypress is 1, nothing is returned. The
following patch addresses this inconsistency.
Updated patch which includes a further fix to the handling of the numpad when
numlock is on. This further fix is courtesy Amanieu d'Antras.
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Mon, 13 Apr 2009 08:42:09 +0000 |
| parents | a1b03ba2fcd0 |
| children | 5425a6fbacf8 |
line wrap: on
line source
/* SDL - Simple DirectMedia Layer Copyright (C) 1997-2009 Sam Lantinga This library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version. This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with this library; if not, write to the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA Sam Lantinga slouken@libsdl.org */ /* * VBL queue routine * * Patrice Mandin */ #define _vbl_queue 0x456 #define _hz_200 0x4ba .text .globl _SDL_AtariVblInstall .globl _SDL_AtariVblUninstall .globl _SDL_MintAudio_hasfpu /*--- Vector installer ---*/ _SDL_AtariVblInstall: movel sp@(4),my_vector lea _my_vbl,a0 clrw vbl_mutex movel _hz_200.w, _SDL_Atari_hz200 /* Stop interrupts */ movew #0x2700,sr /* Read vbl_queue pointer */ movel _vbl_queue.w,a1 /* Search a free place */ moveq #7,d0 bcl_search_place: movel (a1),d1 beqs place_found addql #4,a1 dbra d0,bcl_search_place /* Not found */ moveq #1,d0 bras exit_vbl_queue /* Then install ourselves */ place_found: movel a0,(a1) moveq #0,d0 exit_vbl_queue: /* Restart interrupts */ movew #0x2300,sr rts /*--- Vector uninstaller ---*/ _SDL_AtariVblUninstall: movel sp@(4),d0 cmpl my_vector,d0 bnes badvector movel #_my_vbl,d0 /* Stop interrupts */ movew #0x2700,sr /* Read vbl_queue pointer */ movel _vbl_queue.w,a1 /* Search where we are */ moveq #7,d1 bcl2_search_place: cmpl (a1),d0 bnes next_place clrl (a1) moveq #0,d1 next_place: addql #4,a1 dbra d1,bcl2_search_place /* Restart interrupts */ movew #0x2300,sr badvector: rts /*--- Our vbl ---*/ _my_vbl: /* Update _hz_200 */ movel _hz_200.w, _SDL_Atari_hz200 /* Verify if this is not already running */ tstw vbl_mutex bnes vbl_end notw vbl_mutex moveml d0-d7/a0-a6,sp@- /* Save FPU if needed */ tstw _SDL_MintAudio_hasfpu beqs SDL_AtariVbl_nofpu1 .chip 68060 fsave sp@- fmoveml fpcr/fpsr/fpiar,sp@- fmovemx fp0-fp7,sp@- .chip 68000 SDL_AtariVbl_nofpu1: movel my_vector,a0 jsr a0@ /* Restore FPU if needed */ tstw _SDL_MintAudio_hasfpu beqs SDL_AtariVbl_Xbios_nofpu2 .chip 68060 fmovemx sp@+,fp0-fp7 fmoveml sp@+,fpcr/fpsr/fpiar frestore sp@+ .chip 68000 SDL_AtariVbl_Xbios_nofpu2: moveml sp@+,d0-d7/a0-a6 clrw vbl_mutex vbl_end: rts .data .even .comm _SDL_Atari_hz200,4*1 .even .comm vbl_mutex,2*1 .even .comm my_vector,4*1