mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-27 07:20:11 +00:00
4661a15343
2003-05-05 Jakub Jelinek <jakub@redhat.com> * sysdeps/ia64/bits/atomic.h (__arch_compare_and_exchange_val_8_acq, __arch_compare_and_exchange_val_16_acq): Cast 0 to mem's type. * sysdeps/powerpc/powerpc32/bits/atomic.h (__arch_compare_and_exchange_val_64_acq): Likewise. * sysdeps/sparc/sparc32/sparcv9/bits/atomic.h (__arch_compare_and_exchange_val_8_acq, __arch_compare_and_exchange_val_16_acq, __arch_compare_and_exchange_val_64_acq): Likewise. * sysdeps/sparc/sparc64/bits/atomic.h (__arch_compare_and_exchange_val_8_acq, __arch_compare_and_exchange_val_16_acq): Likewise. * sysdeps/s390/bits/atomic.h (__arch_compare_and_exchange_val_8_acq, __arch_compare_and_exchange_val_16_acq, __arch_compare_and_exchange_val_64_acq): Likewise. * sysdeps/unix/sysv/linux/sh/bits/atomic.h (__arch_compare_and_exchange_val_64_acq): Likewise. * sysdeps/s390/s390-64/backtrace.c (__backtrace): Add cast to shut up warning. * sysdeps/s390/fpu/fegetenv.c (fegetenv): Likewise. * sysdeps/unix/sysv/linux/s390/s390-64/sysdep.h (INLINE_SYSCALL, INTERNAL_SYSCALL_DIRECT, INTERNAL_SYSCALL_SVC0): Return long instead of int. (INTERNAL_SYSCALL_ERROR_P): Cast val to unsigned long, replace 0xfffff001u with -4095UL.
44 lines
1.7 KiB
C
44 lines
1.7 KiB
C
/* Store current floating-point environment.
|
|
Copyright (C) 2000, 2003 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
Contributed by Denis Joseph Barrow (djbarrow@de.ibm.com).
|
|
|
|
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. */
|
|
|
|
#include <fenv_libc.h>
|
|
#include <fpu_control.h>
|
|
#include <stddef.h>
|
|
#include <asm/ptrace.h>
|
|
#include <sys/ptrace.h>
|
|
#include <unistd.h>
|
|
|
|
int
|
|
fegetenv (fenv_t *envp)
|
|
{
|
|
/* The S/390 IEEE fpu doesn't keep track of the ieee instruction pointer.
|
|
To get around that the kernel will store the address of the last
|
|
fpu fault to the process structure. This ptrace call reads this value
|
|
from the kernel space. That means the ieee_instruction_pointer is
|
|
only correct after a fpu fault. That's the best we can do, there is
|
|
no way to find out the ieee instruction pointer if there was no fault. */
|
|
_FPU_GETCW (envp->fpc);
|
|
envp->ieee_instruction_pointer =
|
|
(void *) ptrace (PTRACE_PEEKUSER, getpid (), PT_IEEE_IP);
|
|
|
|
/* Success. */
|
|
return 0;
|
|
}
|