glibc/linuxthreads/sysdeps/s390/s390-32/pt-machine.h
Ulrich Drepper d347a4ab1d Update.
2003-07-31  Jakub Jelinek  <jakub@redhat.com>

	* dlfcn/dlerror.c (once): New.
	(dlerror): Call __libc_once.
	(_dlerror_run): Remove once.

2003-07-31  Jakub Jelinek  <jakub@redhat.com>

	* sysdeps/unix/sysv/linux/ia64/bits/sigcontext.h (struct sigcontext):
	Sync with 2.5.7 and 2.5.73 kernel changes.

2003-07-31  Jakub Jelinek  <jakub@redhat.com>

	* dlfcn/eval.c (funcall): Add noinline attribute to shut up warnings.
	* elf/rtld.c (dl_main): Cast ElfW(Addr) arguments with %Zx/%Zd
	formats to size_t.
	* elf/dl-lookup.c (_dl_debug_bindings): Likewise.
	* elf/tst-tls6.c (do_test): Use %zd format for l_tls_modid.
	* elf/tst-tls8.c (do_test): Use %zd format for modid1 and modid2.
	* gmon/tst-sprofil.c (main): Add parens to shut up warning.
	* iconv/tst-iconv3.c (main): Use %td instead of %zd for pointer
	difference argument.
	* stdio-common/tst-wc-printf.c (main): Cast arguments with %C
	format to wint_t.
	* stdlib/tst-limits.c (main): For WORD_BIT and LONG_BIT, use
	%d format and cast expected value to int.
	* sysdeps/generic/libc-start.c (STATIC): Add
	__attribute__((always_inline) if LIBC_START_MAIN is already defined.
	* sysdeps/powerpc/fpu/w_sqrt.c (a_nan, a_inf): Change from uint32_t
	to ieee_float_shape_type.
	(__sqrt): Avoid type punning.
	* sysdeps/powerpc/fpu/w_sqrtf.c (a_nan, a_inf): Change from uint32_t
	to ieee_float_shape_type.
	(__sqrtf): Avoid type punning.
	* sysdeps/s390/s390-32/dl-machine.h (elf_machine_rela): Don't define
	refsym if in dl-conflict.c.
	* sysdeps/s390/s390-64/dl-machine.h (elf_machine_rela): Likewise.
	* sysdeps/unix/sysv/linux/i386/semctl.c (union semun): Add __old_buf.
	(__new_semctl): Shut up warning.
	* sysdeps/unix/sysv/linux/semctl.c (union semun): Add __old_buf.
	(__new_semctl): Shut up warning.
	* sysdeps/unix/sysv/linux/shmctl.c (__new_shmctl): Wrap long lines.
	Change old into union of __old_shmid_ds and __old_shminfo structs.
	Adjust all users.
	* wcsmbs/wcsmbs-tst1.c (main): Cast arguments with %C format to wint_t.

2003-07-31  Jakub Jelinek  <jakub@redhat.com>

	* sysdeps/unix/sysv/linux/utimes.c (__utimes): Fix actime and
	modtime computation.
	* sysdeps/unix/sysv/linux/futimes.c (__futimes): Likewise.
	* sysdeps/posix/utimes.c (__utimes): Likewise.
2003-07-31 19:26:38 +00:00

121 lines
4.2 KiB
C

/* Machine-dependent pthreads configuration and inline functions.
S390 version.
Copyright (C) 1999, 2000, 2001, 2002, 2003 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 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; 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_MACHINE_H
#define _PT_MACHINE_H 1
#ifndef PT_EI
# define PT_EI extern inline __attribute__ ((always_inline))
#endif
extern long int testandset (int *spinlock);
extern int __compare_and_swap (long int *p, long int oldval, long int newval);
/* For multiprocessor systems, we want to ensure all memory accesses
are completed before we reset a lock. On other systems, we still
need to make sure that the compiler has flushed everything to memory. */
#define MEMORY_BARRIER() __asm__ __volatile__ ("bcr 15,0" : : : "memory")
/* 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");
#ifdef USE_TLS
/* Return the thread descriptor for the current thread. */
# define THREAD_SELF ((pthread_descr) __builtin_thread_pointer ())
/* Initialize the thread-unique value. */
#define INIT_THREAD_SELF(descr, nr) __builtin_set_thread_pointer (descr)
#else
/* Return the thread descriptor for the current thread.
S/390 registers uses access register 0 as "thread register". */
#define THREAD_SELF ({ \
register pthread_descr __self; \
__asm__ ("ear %0,%%a0" : "=d" (__self) ); \
__self; \
})
/* Initialize the thread-unique value. */
#define INIT_THREAD_SELF(descr, nr) ({ \
__asm__ ("sar %%a0,%0" : : "d" (descr) ); \
})
#endif
/* Access to data in the thread descriptor is easy. */
#define THREAD_GETMEM(descr, member) \
((void) sizeof (descr), THREAD_SELF->member)
#define THREAD_GETMEM_NC(descr, member) \
((void) sizeof (descr), THREAD_SELF->member)
#define THREAD_SETMEM(descr, member, value) \
((void) sizeof (descr), THREAD_SELF->member = (value))
#define THREAD_SETMEM_NC(descr, member, value) \
((void) sizeof (descr), 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__(
" la 1,%1\n"
" lr 0,%2\n"
" cs 0,%3,0(1)\n"
" ipm %0\n"
" srl %0,28\n"
"0:"
: "=&d" (retval), "+m" (*p)
: "d" (oldval) , "d" (newval)
: "cc", "0", "1" );
return retval == 0;
}
#endif /* pt-machine.h */