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/* GStreamer
* Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
* 2000 Wim Taymans <wtay@chello.be>
*
* gstppc.h: Header for PPC-specific architecture issues
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#ifndef __GST_GSTALPHA_H__
#define __GST_GSTALPHA_H__
#define GST_ARCH_SET_SP(stackpointer) \
__asm__("bis $31,%0,$30" : : "r"(stackpointer));
#define GST_ARCH_CALL(target) \
__asm__( "bis $31,%0,$27\n\t" \
"jsr $26,($27),0" : : "r"(target) );
// Need to get more information about the stackframe format
// and get the fields more correct. Check GDB sources maybe?
struct minimal_stackframe {
unsigned long back_chain;
unsigned long LR_save;
unsigned long unused1;
unsigned long unused2;
};
#define GST_ARCH_SETUP_STACK(sp) \
sp = ((unsigned long *)(sp)) - 4; \
((struct minimal_stackframe *)sp)->back_chain = 0;
#endif /* __GST_GSTALPHA_H__ */
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