sysdeps/unix/sysv/linux/alpha/ieee_get_fp_control.S

   1 /* Copyright (C) 1993, 1995, 1996 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3    Contributed by David Mosberger <davidm@azstarnet.com>, 1995.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Library General Public License as
   7    published by the Free Software Foundation; either version 2 of the
   8    License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Library General Public License for more details.
  14
  15    You should have received a copy of the GNU Library General Public
  16    License along with the GNU C Library; see the file COPYING.LIB.  If not,
  17    write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  18    Boston, MA 02111-1307, USA.  */
  19
  20 #include <sysdep.h>
  21
  22 #define GSI_IEEE_FP_CONTROL     45
  23
  24         .text
  25
  26 LEAF(__ieee_get_fp_control, 16)
  27 #ifdef PROF
  28         ldgp    gp, 0(pv)
  29         lda     sp, -16(sp)
  30         .set noat
  31         lda     AT, _mcount
  32         jsr     AT, (AT), _mcount
  33         .set at
  34         .prologue 1
  35 #else
  36         lda     sp, -16(sp)
  37         .prologue 0
  38 #endif
  39
  40         mov     sp, a1
  41         ldi     a0, GSI_IEEE_FP_CONTROL
  42         ldi     v0, __NR_osf_getsysinfo
  43         call_pal PAL_callsys
  44         bne     a3, $error
  45
  46         ldq     v0, 0(sp)
  47         lda     sp, 16(sp)
  48         ret
  49
  50 $error:
  51 #ifndef PROF
  52         br      gp, 1f
  53 1:      ldgp    gp, 0(gp)
  54 #endif
  55         lda     sp, 16(sp)
  56         jmp     zero, __syscall_error
  57
  58         END(__ieee_get_fp_control)
  59
  60 weak_alias (__ieee_get_fp_control, ieee_get_fp_control)