diff options
Diffstat (limited to 'distrib/sdl-1.2.12/src/video/ataricommon/SDL_xbiosinterrupt.S')
| -rw-r--r-- | distrib/sdl-1.2.12/src/video/ataricommon/SDL_xbiosinterrupt.S | 172 |
1 files changed, 0 insertions, 172 deletions
diff --git a/distrib/sdl-1.2.12/src/video/ataricommon/SDL_xbiosinterrupt.S b/distrib/sdl-1.2.12/src/video/ataricommon/SDL_xbiosinterrupt.S deleted file mode 100644 index a76df37..0000000 --- a/distrib/sdl-1.2.12/src/video/ataricommon/SDL_xbiosinterrupt.S +++ /dev/null @@ -1,172 +0,0 @@ -/* - 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 -*/ - -/* - * XBIOS mouse & joystick vectors - * - * Patrice Mandin - */ - - .text - - .globl _SDL_AtariXbios_Install - .globl _SDL_AtariXbios_Restore - .globl _SDL_AtariXbios_MouseVector - .globl _SDL_AtariXbios_JoystickVector - - .globl _SDL_AtariXbios_mouselock - .globl _SDL_AtariXbios_mouseb - .globl _SDL_AtariXbios_mousex - .globl _SDL_AtariXbios_mousey - .globl _SDL_AtariXbios_joystick - -/*--- Vector installer ---*/ - -_SDL_AtariXbios_Install: - movel sp@(4),a0 - - /* Stop interrupts */ - - movew #0x2700,sr - - /* Save old mouse vector, set our routine */ - - clrl oldmousevector - movel sp@(8),d0 - beqs no_new_mouse_vector - movel a0@(16),oldmousevector - movel d0,a0@(16) -no_new_mouse_vector: - - /* Save old joystick vector, set our routine */ - - clrl oldjoystickvector - movel sp@(12),d0 - beqs no_new_joystick_vector - movel a0@(24),oldjoystickvector - movel d0,a0@(24) -no_new_joystick_vector: - - /* Restart interrupts */ - - movew #0x2300,sr - - rts - -/*--- Vector restorer ---*/ - -_SDL_AtariXbios_Restore: - movel sp@(4),a0 - - /* Stop interrupts */ - - movew #0x2700,sr - - /* Restore mouse vector */ - - movel oldmousevector,d0 - beqs no_restore_mouse - movel d0,a0@(16) -no_restore_mouse: - - /* Restore joystick vector */ - - movel oldjoystickvector,d0 - beqs no_restore_joystick - movel d0,a0@(24) -no_restore_joystick: - - /* Restart interrupts */ - - movew #0x2300,sr - - rts - -/*--- Our mouse vector ---*/ - - .text - .even - .ascii "XBRA" - .ascii "LSDL" - .comm oldmousevector,4*1 -_SDL_AtariXbios_MouseVector: - movel d0,sp@- - - /* Mouse buttons */ - moveb (a0),d0 - andw #3,d0 - movew d0,_SDL_AtariXbios_mouseb - - /* X movement */ - moveb a0@(1),d0 - extw d0 - addw d0,_SDL_AtariXbios_mousex - - /* Y movement */ - moveb a0@(2),d0 - extw d0 - addw d0,_SDL_AtariXbios_mousey - - /* Lock mouse position ? */ - tstw _SDL_AtariXbios_mouselock - beq.s no_mouse_lock - clrb a0@(1) - clrb a0@(2) -no_mouse_lock: - - /* Jump through old vector */ - movel sp@+,d0 - - movel oldmousevector,sp@- - rts - - .data - .even - .comm _SDL_AtariXbios_mouselock,2*1 - .comm _SDL_AtariXbios_mousex,2*1 - .comm _SDL_AtariXbios_mousey,2*1 - .comm _SDL_AtariXbios_mouseb,2*1 - -/*--- Our joystick vector ---*/ - - .text - .even - .ascii "XBRA" - .ascii "LSDL" - .comm oldjoystickvector,4*1 -_SDL_AtariXbios_JoystickVector: - movel d0,sp@- - - /* New joystick state */ - moveb a0@(2),d0 - andw #0x8f,d0 - movew d0,_SDL_AtariXbios_joystick - - /* Jump through old vector */ - movel sp@+,d0 - - movel oldjoystickvector,sp@- - rts - - .data - .even - .comm _SDL_AtariXbios_joystick,2*1 |