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more cothreads cleanup, and first pass at ARM code

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Original commit message from CVS:
more cothreads cleanup, and first pass at ARM code
This commit is contained in:
Erik Walthinsen 2001-01-19 09:14:42 +00:00
parent 284014fed1
commit 5ed8c467bf
5 changed files with 51 additions and 15 deletions
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1
gst/Makefile.am
View file

@ -104,6 +104,7 @@ noinst_HEADERS = \
gsti386.h \
gstppc.h \
gstalpha.h \
gstarm.h \
gstpropsprivate.h
CFLAGS = $(LIBGST_CFLAGS)

9
gst/cothreads.c
View file

@ -123,6 +123,7 @@ cothread_create (cothread_context *ctx)
s->threadnum = ctx->nthreads;
s->flags = 0;
s->sp = ((int *)s + COTHREAD_STACKSIZE);
// is this needed anymore?
s->top_sp = s->sp;
GST_INFO (GST_CAT_COTHREADS,"created cothread #%d: %p at sp:%p", ctx->nthreads, s, s->sp);
@ -267,7 +268,6 @@ cothread_switch (cothread_state *thread)
ctx->current = thread->threadnum;
/* save the current stack pointer, frame pointer, and pc */
// GET_SP(current->sp);
enter = setjmp(current->jmp);
if (enter != 0) {
GST_DEBUG (0,"enter thread #%d %d %p<->%p (%d)\n",current->threadnum, enter,
@ -282,14 +282,13 @@ cothread_switch (cothread_state *thread)
/* restore stack pointer and other stuff of new cothread */
if (thread->flags & COTHREAD_STARTED) {
GST_DEBUG (0,"in thread \n");
// SET_SP(thread->sp);
// switch to it
longjmp(thread->jmp,1);
} else {
SETUP_STACK(thread->sp);
SET_SP(thread->sp);
GST_ARCH_SETUP_STACK(thread->sp);
GST_ARCH_SET_SP(thread->sp);
// start it
CALL(cothread_stub);
GST_ARCH_CALL(cothread_stub);
GST_DEBUG (0,"exit thread \n");
ctx->current = 0;
}

7
gst/cothreads.h
View file

@ -50,9 +50,10 @@ struct _cothread_state {
char **argv;
int flags;
int *sp;
int *top_sp;
int *pc;
void *sp;
// is this needed any more?
void *top_sp;
void *pc;
jmp_buf jmp;
};

12
gst/gstarch.h
View file

@ -27,18 +27,16 @@
#include "config.h"
#endif
#ifdef HAVE_CPU_I386
#if defined(HAVE_CPU_I386)
#include "gsti386.h"
#else
#ifdef HAVE_CPU_PPC
#elif defined (HAVE_CPU_PPC)
#include "gstppc.h"
#else
#ifdef HAVE_CPU_ALPHA
#elif defined(HAVE_CPU_ALPHA)
#include "gstalpha.h"
#elif defined(HAVE_CPU_ARM)
#include "gstarm.h"
#else
#error Need to know about this architecture, or have a generic implementation
#endif
#endif
#endif
#endif /* __GST_GSTARCH_H__ */

37
gst/gstarm.h Normal file
View file

@ -0,0 +1,37 @@
/* 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_GSTARM_H__
#define __GST_GSTARM_H__
#define GST_ARCH_SET_SP(stackpointer) \
__asm__( "mov%?\t%!sp, %0" : : "r"(stackpointer));
#define GST_ARCH_CALL(target) \
__asm__( "mov%?\t%!pc, %1" : : "r"(target) );
// Need to get more information about the stackframe format
// and get the fields more correct. Check GDB sources maybe?
#define GST_ARCH_SETUP_STACK(sp) sp -= 4
#endif /* __GST_GSTARM_H__ */