From 136d43328bda928a17fc5fc3dcf1fd6bf6f1898f Mon Sep 17 00:00:00 2001 From: Ulrich Drepper Date: Fri, 16 Mar 2001 08:53:02 +0000 Subject: Update. 2001-03-13 Martin Schwidefsky * shlib-versions: Add rule for Linux on 64 bit S/390. * sysdeps/s390/s390-64/pt-machine.h: New file. * sysdeps/unix/sysv/linux/s390/s390-64/pt-initfini.c: New file. 2001-03-13 Martin Schwidefsky * sysdeps/s390/pt-machine.h: Move to... * sysdeps/s390/s390-32/pt-machine.h: ...here. Add defines for FLOATING_STACK and ARCH_STACK_MAX_SIZE. --- linuxthreads/sysdeps/s390/s390-64/pt-machine.h | 107 +++++++++++++++++++++++++ 1 file changed, 107 insertions(+) create mode 100644 linuxthreads/sysdeps/s390/s390-64/pt-machine.h (limited to 'linuxthreads/sysdeps/s390') diff --git a/linuxthreads/sysdeps/s390/s390-64/pt-machine.h b/linuxthreads/sysdeps/s390/s390-64/pt-machine.h new file mode 100644 index 0000000000..f205c1245c --- /dev/null +++ b/linuxthreads/sysdeps/s390/s390-64/pt-machine.h @@ -0,0 +1,107 @@ +/* Machine-dependent pthreads configuration and inline functions. + 64 bit S/390 version. + Copyright (C) 2001 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 PT_EI +# define PT_EI extern inline +#endif + +/* Spinlock implementation; required. */ +PT_EI long int +testandset (int *spinlock) +{ + int ret; + + __asm__ __volatile__( + " la 1,%1\n" + " lhi 0,1\n" + " l %0,%1\n" + "0: cs %0,0,0(1)\n" + " jl 0b" + : "=&d" (ret), "+m" (*spinlock) + : : "0", "1", "cc"); + + return ret; +} + + +/* Get some notion of the current stack. Need not be exactly the top + of the stack, just something somewhere in the current frame. */ +#define CURRENT_STACK_FRAME stack_pointer +register char * stack_pointer __asm__ ("15"); + +/* Return the thread descriptor for the current thread. + 64 bit S/390 uses access register 0 and 1 as "thread register". */ +#define THREAD_SELF ({ \ + register pthread_descr __self; \ + __asm__ (" ear %0,%%a0\n" \ + " sllg %0,%0,32\n" \ + " ear %0,%%a1\n" \ + : "=d" (__self) ); \ + __self; \ +}) + +/* Initialize the thread-unique value. */ +#define INIT_THREAD_SELF(descr, nr) ({ \ + __asm__ (" sar %%a1,%0\n" \ + " srlg 0,%0,32\n" \ + " sar %%a0,0\n" \ + : : "d" (descr) : "0" ); \ +}) + +/* Access to data in the thread descriptor is easy. */ +#define THREAD_GETMEM(descr, member) THREAD_SELF->member +#define THREAD_GETMEM_NC(descr, member) THREAD_SELF->member +#define THREAD_SETMEM(descr, member, value) THREAD_SELF->member = (value) +#define THREAD_SETMEM_NC(descr, member, value) THREAD_SELF->member = (value) + +/* We want the OS to assign stack addresses. */ +#define FLOATING_STACKS 1 + +/* Maximum size of the stack if the rlimit is unlimited. */ +#define ARCH_STACK_MAX_SIZE 8*1024*1024 + +/* Compare-and-swap for semaphores. */ + +#define HAS_COMPARE_AND_SWAP + +PT_EI int +__compare_and_swap(long int *p, long int oldval, long int newval) +{ + int retval; + + __asm__ __volatile__( + " lgr 0,%2\n" + " csg 0,%3,%1\n" + " ipm %0\n" + " srl %0,28\n" + "0:" + : "=&d" (retval), "+m" (*p) + : "d" (oldval) , "d" (newval) + : "cc", "0"); + return retval == 0; +} + + + +/* Get some notion of the current stack. Need not be exactly the top + of the stack, just something somewhere in the current frame. */ +#define CURRENT_STACK_FRAME stack_pointer +register char * stack_pointer __asm__ ("%r15"); -- cgit v1.2.3