[uClibc-cvs] uClibc/libc/sysdeps/linux/m68k/bits atomicity.h,NONE,1.1 sigcontextinfo.h,NONE,1.1 stackinfo.h,NONE,1.1
Erik Andersen
andersen at codepoet.org
Mon Mar 3 20:58:28 UTC 2003
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Update of /var/cvs/uClibc/libc/sysdeps/linux/m68k/bits
In directory winder:/tmp/cvs-serv13798/libc/sysdeps/linux/m68k/bits
Added Files:
atomicity.h sigcontextinfo.h stackinfo.h
Log Message:
Initial effort at adding profiling support.
--- NEW FILE: atomicity.h ---
/* Low-level functions for atomic operations. m680x0 version, x >= 2.
Copyright (C) 1997 Free Software Foundation, Inc.
Contributed by Andreas Schwab <schwab at issan.informatik.uni-dortmund.de>.
This file is part of the GNU C Library.
The GNU C 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.
The GNU C 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 the GNU C Library; if not, write to the Free
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
#ifndef _ATOMICITY_H
#define _ATOMICITY_H 1
#include <inttypes.h>
static inline int
__attribute__ ((unused))
exchange_and_add (volatile uint32_t *mem, int val)
{
register int result = *mem;
register int temp;
__asm__ __volatile__ ("1: move%.l %0,%1;"
" add%.l %2,%1;"
" cas%.l %0,%1,%3;"
" jbne 1b"
: "=d" (result), "=&d" (temp)
: "d" (val), "m" (*mem), "0" (result) : "memory");
return result;
}
static inline void
__attribute__ ((unused))
atomic_add (volatile uint32_t *mem, int val)
{
/* XXX Use cas here as well? */
__asm__ __volatile__ ("add%.l %0,%1"
: : "id" (val), "m" (*mem) : "memory");
}
static inline int
__attribute__ ((unused))
compare_and_swap (volatile long int *p, long int oldval, long int newval)
{
char ret;
long int readval;
__asm__ __volatile__ ("cas%.l %2,%3,%1; seq %0"
: "=dm" (ret), "=m" (*p), "=d" (readval)
: "d" (newval), "m" (*p), "2" (oldval));
return ret;
}
#endif /* atomicity.h */
--- NEW FILE: sigcontextinfo.h ---
/* Copyright (C) 1998, 1999, 2001 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Andreas Schwab <schwab at issan.informatik.uni-dortmund.de>, 1998.
The GNU C 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.
The GNU C 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 the GNU C Library; if not, write to the Free
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
#define SIGCONTEXT int _code, struct sigcontext *
#define SIGCONTEXT_EXTRA_ARGS _code,
#define GET_PC(ctx) ((void *) (ctx)->sc_pc)
#define GET_FRAME(ctx) ((void *) __builtin_frame_address (1))
#define GET_STACK(ctx) ((void *) (ctx)->sc_usp)
#define CALL_SIGHANDLER(handler, signo, ctx) \
(handler)((signo), SIGCONTEXT_EXTRA_ARGS (ctx))
--- NEW FILE: stackinfo.h ---
/* Copyright (C) 1999 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C 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.
The GNU C 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 the GNU C Library; if not, write to the Free
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
/* This file contains a bit of information about the stack allocation
of the processor. */
#ifndef _STACKINFO_H
#define _STACKINFO_H 1
/* On m68k the stack grows down. */
#define _STACK_GROWS_DOWN 1
#endif /* stackinfo.h */
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