glibc/sysdeps/s390/atomicity.h
Andreas Jaeger 847b055c65 Update.
2000-08-02  Andreas Jaeger  <aj@suse.de>

	* sysdeps/unix/sysv/linux/s390/Dist: New file.
	* sysdeps/unix/sysv/linux/s390/sysdep.h: New file.
	* sysdeps/unix/sysv/linux/s390/sysdep.S: New file.
	* sysdeps/unix/sysv/linux/s390/syscall.S: New file.
	* sysdeps/unix/sysv/linux/s390/sys/user.h: New file.
	* sysdeps/unix/sysv/linux/s390/sys/ucontext.h: New file.
	* sysdeps/unix/sysv/linux/s390/sys/ptrace.h: New file.
	* sysdeps/unix/sysv/linux/s390/sys/elf.h: New file.
	* sysdeps/unix/sysv/linux/s390/socket.S: New file.
	* sysdeps/unix/sysv/linux/s390/sigcontextinfo.h: New file.
	* sysdeps/unix/sysv/linux/s390/shmctl.c: New file.
	* sysdeps/unix/sysv/linux/s390/setreuid.c: New file.
	* sysdeps/unix/sysv/linux/s390/setresuid.c: New file.
	* sysdeps/unix/sysv/linux/s390/setresgid.c: New file.
	* sysdeps/unix/sysv/linux/s390/setregid.c: New file.
	* sysdeps/unix/sysv/linux/s390/setgroups.c: New file.
	* sysdeps/unix/sysv/linux/s390/setgid.c: New file.
	* sysdeps/unix/sysv/linux/s390/setfsuid.c: New file.
	* sysdeps/unix/sysv/linux/s390/setfsgid.c: New file.
	* sysdeps/unix/sysv/linux/s390/seteuid.c: New file.
	* sysdeps/unix/sysv/linux/s390/setegid.c: New file.
	* sysdeps/unix/sysv/linux/s390/semctl.c: New file.
	* sysdeps/unix/sysv/linux/s390/register-dump.h: New file.
	* sysdeps/unix/sysv/linux/s390/putpmsg.c: New file.
	* sysdeps/unix/sysv/linux/s390/putmsg.c: New file.
	* sysdeps/unix/sysv/linux/s390/profil-counter.h: New file.
	* sysdeps/unix/sysv/linux/s390/msgctl.c: New file.
	* sysdeps/unix/sysv/linux/s390/mmap.S: New file.
	* sysdeps/unix/sysv/linux/s390/getuid.c: New file.
	* sysdeps/unix/sysv/linux/s390/getresuid.c: New file.
	* sysdeps/unix/sysv/linux/s390/getresgid.c: New file.
	* sysdeps/unix/sysv/linux/s390/getpmsg.c: New file.
	* sysdeps/unix/sysv/linux/s390/getmsg.c: New file.
	* sysdeps/unix/sysv/linux/s390/getgroups.c: New file.
	* sysdeps/unix/sysv/linux/s390/getegid.c: New file.
	* sysdeps/unix/sysv/linux/s390/geteuid.c: New file.
	* sysdeps/unix/sysv/linux/s390/fchown.c: New file.
	* sysdeps/unix/sysv/linux/s390/clone.S: New file.
	* sysdeps/unix/sysv/linux/s390/brk.c: New file.
	* sysdeps/unix/sysv/linux/s390/bits/time.h: New file.
	* sysdeps/unix/sysv/linux/s390/bits/resource.h: New file.
	* sysdeps/unix/sysv/linux/s390/bits/mman.h: New file.
	* sysdeps/unix/sysv/linux/s390/bits/fcntl.h: New file.
	* sysdeps/unix/sysv/linux/s390/Makefile: New file.
	* sysdeps/s390/sysdep.h: New file.
	* sysdeps/s390/sys/ucontext.h: New file.
	* sysdeps/s390/sub_n.S: New file.
	* sysdeps/s390/strncpy.S: New file.
	* sysdeps/s390/strcpy.S: New file.
	* sysdeps/s390/stackinfo.h: New file.
	* sysdeps/s390/setjmp.S: New file.
	* sysdeps/s390/s390-mcount.S: New file.
	* sysdeps/s390/mul_1.S: New file.
	* sysdeps/s390/memusage.h: New file.
	* sysdeps/s390/memset.S: New file.
	* sysdeps/s390/memcpy.S: New file.
	* sysdeps/s390/memchr.S: New file.
	* sysdeps/s390/machine-gmon.h: New file.
	* sysdeps/s390/ldbl2mpn.c: New file.
	* sysdeps/s390/gmp-mparam.h: New file.
	* sysdeps/s390/fpu/fpu_control.h: New file.
	* sysdeps/s390/fpu/fesetround.c: New file.
	* sysdeps/s390/fpu/fegetround.c: New file.
	* sysdeps/s390/fpu/fclrexcpt.c: New file.
	* sysdeps/s390/fpu/bits/fenv.h: New file.
	* sysdeps/s390/ffs.c: New file.
	* sysdeps/s390/elf/start.S: New file.
	* sysdeps/s390/elf/setjmp.S: New file.
	* sysdeps/s390/elf/bsd-setjmp.S: New file.
	* sysdeps/s390/elf/bsd-_setjmp.S: New file.
	* sysdeps/s390/dl-machine.h: New file.
	* sysdeps/s390/bzero.S: New file.
	* sysdeps/s390/bsd-setjmp.S: New file.
	* sysdeps/s390/bsd-_setjmp.S: New file.
	* sysdeps/s390/bits/string.h: New file.
	* sysdeps/s390/bits/setjmp.h: New file.
	* sysdeps/s390/bits/huge_val.h: New file.
	* sysdeps/s390/bits/endian.h: New file.
	* sysdeps/s390/bits/byteswap.h: New file.
	* sysdeps/s390/bcopy.S: New file.
	* sysdeps/s390/backtrace.c: New file.
	* sysdeps/s390/atomicity.h: New file.
	* sysdeps/s390/asm-syntax.h: New file.
	* sysdeps/s390/addmul_1.S: New file.
	* sysdeps/s390/add_n.S: New file.
	* sysdeps/s390/abort-instr.h: New file.
	* sysdeps/s390/__longjmp.c: New file.
	* sysdeps/s390/Makefile: New file.
	* sysdeps/s390/Implies: New file.
	* sysdeps/s390/Dist: New file.
	Patches by Martin Schwidefsky <schwidefsky@de.ibm.com>.
2000-08-02 15:15:00 +00:00

75 lines
2.2 KiB
C

/* Low-level functions for atomic operations. S390 version.
Copyright (C) 2000 Free Software Foundation, Inc.
Contributed by Martin Schwidefsky (schwidefsky@de.ibm.com).
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 Library General Public License as
published by the Free Software Foundation; either version 2 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. 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)
{
int result;
__asm__ __volatile__(
" L %0,%2\n"
" LA 2,%1\n"
"0: LR 0,%0\n"
" AR 0,%3\n"
" CS %0,0,0(2)\n"
" JL 0b"
: "=&d" (result), "=m" (*mem)
: "1" (*mem), "d" (val) : "0", "1", "2" );
return result;
}
static inline void
__attribute__ ((unused))
atomic_add (volatile uint32_t *mem, int val)
{
__asm__ __volatile__(
" LA 2,%0\n"
"0: L 0,%1\n"
" LR 1,0\n"
" AR 1,%2\n"
" CS 0,1,0(2)\n"
" JL 0b"
: "=m" (*mem) : "0" (*mem), "d" (val) : "0", "1", "2" );
}
static inline int
__attribute__ ((unused))
compare_and_swap (volatile long int *p, long int oldval, long int newval)
{
int retval;
__asm__ __volatile__(
" cs %2,%3,%1\n"
" ipm %0\n"
" srl %0,28\n"
"0:"
: "=&r" (retval), "+m" (*p)
: "d" (oldval) , "d" (newval)
: "memory", "cc");
return !retval;
}
#endif /* atomicity.h */