Declare volatile variables modified by interrupt routines

libsdl-org · Apr 30, 2006 · 3dbf741 · 3dbf741
1 parent 38451b7
commit 3dbf741
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Showing 3 changed files with 15 additions and 15 deletions.
diff --git a/src/audio/mint/SDL_mintaudio.h b/src/audio/mint/SDL_mintaudio.h
@@ -119,10 +119,10 @@ enum {
 extern SDL_AudioDevice *SDL_MintAudio_device;
 extern Uint8 *SDL_MintAudio_audiobuf[2];	/* Pointers to buffers */
 extern unsigned long SDL_MintAudio_audiosize;		/* Length of audio buffer=spec->size */
-extern unsigned short SDL_MintAudio_numbuf;		/* Buffer to play */
-extern unsigned short SDL_MintAudio_mutex;
+extern volatile unsigned short SDL_MintAudio_numbuf;		/* Buffer to play */
+extern volatile unsigned short SDL_MintAudio_mutex;
 extern cookie_stfa_t *SDL_MintAudio_stfa;
-extern unsigned long SDL_MintAudio_clocktics;
+extern volatile unsigned long SDL_MintAudio_clocktics;
 
 /* MiNT thread variables */
 extern SDL_bool	SDL_MintAudio_mint_present;

diff --git a/src/video/ataricommon/SDL_ikbdinterrupt_s.h b/src/video/ataricommon/SDL_ikbdinterrupt_s.h
@@ -44,14 +44,14 @@
 
 /* Variables */
 
-extern Uint8  SDL_AtariIkbd_keyboard[128];	/* Keyboard table */
-extern Uint16 SDL_AtariIkbd_mouseb;	/* Mouse on port 0, buttons */
-extern Sint16 SDL_AtariIkbd_mousex;	/* Mouse X relative motion */
-extern Sint16 SDL_AtariIkbd_mousey;	/* Mouse Y relative motion */
-extern Uint16 SDL_AtariIkbd_joystick;	/* Joystick on port 1 */
-
-extern Uint16 SDL_AtariIkbd_enabled;	/* For joystick driver to know
-											if this is usable */
+extern volatile Uint8  SDL_AtariIkbd_keyboard[128];	/* Keyboard table */
+extern volatile Uint16 SDL_AtariIkbd_mouseb;	/* Mouse on port 0, buttons */
+extern volatile Sint16 SDL_AtariIkbd_mousex;	/* Mouse X relative motion */
+extern volatile Sint16 SDL_AtariIkbd_mousey;	/* Mouse Y relative motion */
+extern volatile Uint16 SDL_AtariIkbd_joystick;	/* Joystick on port 1 */
+
+/* For joystick driver to know if this is usable */
+extern Uint16 SDL_AtariIkbd_enabled;
 
 /* Functions */ 
 

diff --git a/src/video/ataricommon/SDL_xbiosinterrupt_s.h b/src/video/ataricommon/SDL_xbiosinterrupt_s.h
@@ -36,10 +36,10 @@
 
 /* Variables */
 
-extern Uint16 SDL_AtariXbios_mouseb;	/* buttons */
-extern Sint16 SDL_AtariXbios_mousex;	/* X relative motion */
-extern Sint16 SDL_AtariXbios_mousey;	/* Y relative motion */
-extern Uint16 SDL_AtariXbios_joystick;	/* Joystick */
+extern volatile Uint16 SDL_AtariXbios_mouseb;	/* buttons */
+extern volatile Sint16 SDL_AtariXbios_mousex;	/* X relative motion */
+extern volatile Sint16 SDL_AtariXbios_mousey;	/* Y relative motion */
+extern volatile Uint16 SDL_AtariXbios_joystick;	/* Joystick */
 
 /* Functions */