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annotate src/video/ataricommon/SDL_atarievents.c @ 553:417f8709e648

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There's a bug in the VC7 optimizer relating to the duff loop optimization
author Sam Lantinga <slouken@libsdl.org>
date Mon, 02 Dec 2002 02:40:58 +0000
parents f6ffac90895c
children 0ce5a68278fd
rev   line source
281
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1 /*
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2 SDL - Simple DirectMedia Layer
297
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3 Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002 Sam Lantinga
281
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4
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5 This library is free software; you can redistribute it and/or
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6 modify it under the terms of the GNU Library General Public
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7 License as published by the Free Software Foundation; either
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8 version 2 of the License, or (at your option) any later version.
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9
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10 This library is distributed in the hope that it will be useful,
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11 but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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13 Library General Public License for more details.
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14
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15 You should have received a copy of the GNU Library General Public
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16 License along with this library; if not, write to the Free
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17 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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18
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19 Sam Lantinga
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20 slouken@libsdl.org
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21 */
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22
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23 #ifdef SAVE_RCSID
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24 static char rcsid =
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25 "@(#) $Id$";
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26 #endif
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27
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28 /*
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29 * Atari keyboard events manager
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30 *
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31 * Patrice Mandin
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32 *
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33 * This routines choose what the final event manager will be
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34 */
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35
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36 #include <stdlib.h>
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37 #include <string.h>
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38
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39 #include <sys/cookie.h>
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40
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41 #include "SDL.h"
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42 #include "SDL_sysevents.h"
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43 #include "SDL_events_c.h"
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44
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45 #include "SDL_atarievents_c.h"
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46 #include "SDL_biosevents_c.h"
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47 #include "SDL_gemdosevents_c.h"
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48 #include "SDL_ikbdevents_c.h"
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49
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50 enum {
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51 MCH_ST=0,
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52 MCH_STE,
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53 MCH_TT,
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54 MCH_F30
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55 };
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56
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57 void (*Atari_ShutdownEvents)(void);
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58
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59 static void Atari_InitializeEvents(_THIS)
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60 {
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61 const char *envr;
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62 unsigned long cookie_mch;
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63
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64 /* Test if we are on an Atari machine or not */
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65 if (Getcookie(C__MCH, &cookie_mch) == C_NOTFOUND) {
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66 cookie_mch = 0;
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67 }
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68 cookie_mch >>= 16;
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69
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70 /* Default is Ikbd, the faster except for clones */
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71 switch(cookie_mch) {
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72 case MCH_ST:
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73 case MCH_STE:
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74 case MCH_TT:
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75 case MCH_F30:
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76 this->InitOSKeymap=AtariIkbd_InitOSKeymap;
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77 this->PumpEvents=AtariIkbd_PumpEvents;
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78 Atari_ShutdownEvents=AtariIkbd_ShutdownEvents;
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79 break;
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80 default:
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81 this->InitOSKeymap=AtariGemdos_InitOSKeymap;
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82 this->PumpEvents=AtariGemdos_PumpEvents;
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83 Atari_ShutdownEvents=AtariGemdos_ShutdownEvents;
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84 break;
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85 }
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86
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87 envr = getenv("SDL_ATARI_EVENTSDRIVER");
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88
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89 if (!envr) {
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90 return;
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91 }
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92
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93 if (strcmp(envr, "ikbd") == 0) {
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94 this->InitOSKeymap=AtariIkbd_InitOSKeymap;
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95 this->PumpEvents=AtariIkbd_PumpEvents;
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96 Atari_ShutdownEvents=AtariIkbd_ShutdownEvents;
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97 }
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98
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99 if (strcmp(envr, "gemdos") == 0) {
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100 this->InitOSKeymap=AtariGemdos_InitOSKeymap;
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101 this->PumpEvents=AtariGemdos_PumpEvents;
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102 Atari_ShutdownEvents=AtariGemdos_ShutdownEvents;
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103 }
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104
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105 if (strcmp(envr, "bios") == 0) {
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106 this->InitOSKeymap=AtariBios_InitOSKeymap;
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107 this->PumpEvents=AtariBios_PumpEvents;
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108 Atari_ShutdownEvents=AtariBios_ShutdownEvents;
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109 }
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110 }
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111
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112 void Atari_InitOSKeymap(_THIS)
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113 {
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114 Atari_InitializeEvents(this);
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115
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116 /* Call choosen routine */
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117 this->InitOSKeymap(this);
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118 }
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119
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120 void Atari_PumpEvents(_THIS)
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121 {
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122 Atari_InitializeEvents(this);
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123
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124 /* Call choosen routine */
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125 this->PumpEvents(this);
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126 }