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Diffstat (limited to 'apps/plugins/sdl/src/video/ataricommon/SDL_atarisuper.h')
-rw-r--r--apps/plugins/sdl/src/video/ataricommon/SDL_atarisuper.h61
1 files changed, 0 insertions, 61 deletions
diff --git a/apps/plugins/sdl/src/video/ataricommon/SDL_atarisuper.h b/apps/plugins/sdl/src/video/ataricommon/SDL_atarisuper.h
deleted file mode 100644
index 8f25c7e5f4..0000000000
--- a/apps/plugins/sdl/src/video/ataricommon/SDL_atarisuper.h
+++ /dev/null
@@ -1,61 +0,0 @@
-/*
- SDL - Simple DirectMedia Layer
- Copyright (C) 1997-2012 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
-*/
-#include "SDL_config.h"
-
-#ifndef _ATARI_SUPER_h
-#define _ATARI_SUPER_h
-
-#include "SDL_stdinc.h"
-
-#ifndef SuperToUser
-
-/*
- * Safe binding to switch back from supervisor to user mode.
- * On TOS or EmuTOS, if the stack pointer has changed between Super(0)
- * and Super(oldssp), the resulting user stack pointer is wrong.
- * This bug does not occur with FreeMiNT.
- * So the safe way to return from supervisor to user mode is to backup
- * the stack pointer then restore it after the trap.
- * Sometimes, GCC optimizes the stack usage, so this matters.
- */
-#define SuperToUser(ptr) \
-(void)__extension__ \
-({ \
- register long retvalue __asm__("d0"); \
- register long sp_backup; \
- \
- __asm__ volatile \
- ( \
- "movl sp,%1\n\t" \
- "movl %2,sp@-\n\t" \
- "movw #0x20,sp@-\n\t" \
- "trap #1\n\t" \
- "movl %1,sp\n\t" \
- : "=r"(retvalue), "=&r"(sp_backup) /* outputs */ \
- : "g"((long)(ptr)) /* inputs */ \
- : "d1", "d2", "a0", "a1", "a2" \
- ); \
-})
-
-#endif /* SuperToUser */
-
-#endif /* _ATARI_SUPER_h */