Mercurial > sdl-ios-xcode
view src/timer/mint/SDL_vbltimer.S @ 2847:7d020441fa81
Don't hardcode RECT for fragment program texture targets.
Now we can generate what a given system needs when compiling the shader.
author | Ryan C. Gordon <icculus@icculus.org> |
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date | Sun, 07 Dec 2008 07:06:34 +0000 |
parents | b42abf0a50bc |
children | 99210400e8b9 |
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/* SDL - Simple DirectMedia Layer Copyright (C) 1997-2006 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