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authorUlrich Drepper <drepper@redhat.com>2000-05-05 16:49:44 +0000
committerUlrich Drepper <drepper@redhat.com>2000-05-05 16:49:44 +0000
commitf1d86a931b2c51a24540e7ea3cda60dc154e064a (patch)
treec37912be8d04d08531989f4fb76bce5f18052270 /sysdeps/ia64/fpu/fraiseexcpt.c
parenta6fe55da9a6f5dfd05247938233a55675cb842c8 (diff)
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Update.
2000-05-05 Jes Sorensen <jes@linuxcare.com> * sysdeps/unix/sysv/linux/ia64/sysdep.h: New file. * sysdeps/unix/sysv/linux/ia64/syscall.S: New file. * sysdeps/unix/sysv/linux/ia64/bits/types.h: New file. * sysdeps/unix/sysv/linux/ia64/bits/endian.h: New file. * sysdeps/ia64/Implies: New file. * sysdeps/ia64/Versions: New file. Declare _dl_symbol_address. * sysdeps/ia64/Makefile: New file. * sysdeps/ia64/gmp-mparam.h: New file, * sysdeps/ia64/elf/start.S: New file. * sysdeps/ia64/bits/fenv.h: New file. 2000-05-05 David Mosberger-Tang <davidm@hpl.hp.com> * sysdeps/unix/sysv/linux/ia64/sysdep.S: New file. 2000-04-26 Jes Sorensen <Jes.Sorensen@cern.ch> * sysdeps/unix/sysv/linux/ia64/bits/elfclass.h: New file. The ia64 has 64 bit .hash entries just as the Alpha. 2000-04-25 Jes Sorensen <Jes.Sorensen@cern.ch> * sysdeps/ia64/memprof.h: New file. Provide GETSP() macro. 2000-04-17 Jes Sorensen <Jes.Sorensen@cern.ch> * sysdeps/ia64/fpu/fclrexcpt.c: New file. * sysdeps/ia64/fpu/fedisblxcpt.c: New file. * sysdeps/ia64/fpu/feenablxcpt.c: New file. * sysdeps/ia64/fpu/fegetenv.c: New file. * sysdeps/ia64/fpu/fegetexcept.c: New file. * sysdeps/ia64/fpu/fegetround.c: New file. * sysdeps/ia64/fpu/feholdexcpt.c: New file. * sysdeps/ia64/fpu/fesetenv.c: New file. * sysdeps/ia64/fpu/fesetround.c: New file. * sysdeps/ia64/fpu/feupdateenv.c: New file. * sysdeps/ia64/fpu/fgetexcptflg.c: New file. * sysdeps/ia64/fpu/fraiseexcpt.c: New file. * sysdeps/ia64/fpu/fsetexcptflg.c: New file. * sysdeps/ia64/fpu/ftestexcept.c: New file. * sysdeps/unix/sysv/linux/i386/dl-procinfo.h (_DL_HWCAP_COUNT): New. * sysdeps/unix/sysv/linux/sparc/sparc32/dl-procinfo.h (_DL_HWCAP_COUNT): New. * sysdeps/unix/sysv/linux/sparc/sparc64/dl-procinfo.h (_DL_HWCAP_COUNT): New.
Diffstat (limited to 'sysdeps/ia64/fpu/fraiseexcpt.c')
-rw-r--r--sysdeps/ia64/fpu/fraiseexcpt.c94
1 files changed, 94 insertions, 0 deletions
diff --git a/sysdeps/ia64/fpu/fraiseexcpt.c b/sysdeps/ia64/fpu/fraiseexcpt.c
new file mode 100644
index 0000000..78a8811
--- /dev/null
+++ b/sysdeps/ia64/fpu/fraiseexcpt.c
@@ -0,0 +1,94 @@
+/* Raise given exceptions.
+ Copyright (C) 1997, 1998, 2000 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Jes Sorensen <Jes.Sorensen@cern.ch>, 2000.
+
+ 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. */
+
+#include <fenv.h>
+#include <math.h>
+#include <signal.h>
+#include <unistd.h>
+#include <asm/fpu.h>
+
+int
+feraiseexcept (int excepts)
+{
+ fenv_t fpsr;
+ double tmp;
+ double dummy;
+
+ /* Raise exceptions represented by EXPECTS. But we must raise only
+ one signal at a time. It is important the if the overflow/underflow
+ exception and the inexact exception are given at the same time,
+ the overflow/underflow exception precedes the inexact exception. */
+
+ /* We do these bits in assembly to be certain GCC doesn't optimize
+ away something important. */
+
+ /* First: invalid exception. */
+ if (FE_INVALID & excepts)
+ {
+ /* One example of a invalid operation is 0 * Infinity. */
+ tmp = 0;
+ __asm__ __volatile__ ("frcpa.s0 %0,p1=f0,f0" : "=f" (tmp) : : "p1" );
+ }
+
+ /* Next: division by zero. */
+ if (FE_DIVBYZERO & excepts)
+ __asm__ __volatile__ ("frcpa.s0 %0,p1=f1,f0" : "=f" (tmp) : : "p1" );
+
+ /* XXX There seem to be no reliable way to generate
+ overflow/underflow exceptions without causing inexact exceptions
+ as well. */
+ /* Next: overflow. */
+ if (FE_OVERFLOW & excepts)
+ {
+ __asm__ __volatile__ ("mov.m %0=ar.fpsr" : "=r" (fpsr));
+ fpsr |= (FE_OVERFLOW << 13);
+ __asm__ __volatile__ ("mov.m ar.fpsr=%0" : : "r" (fpsr));
+
+ if (!((unsigned long int) fpsr & FE_OVERFLOW))
+ {
+ pid_t pid = getpid ();
+ kill (pid, SIGFPE);
+ }
+ }
+
+ /* Next: underflow. */
+ if (FE_UNDERFLOW & excepts)
+ {
+ __asm__ __volatile__ ("mov.m %0=ar.fpsr" : "=r" (fpsr));
+ fpsr |= (FE_UNDERFLOW << 13);
+ __asm__ __volatile__ ("mov.m ar.fpsr=%0" : : "r" (fpsr));
+
+ if (!((unsigned long int) fpsr & FE_UNDERFLOW))
+ {
+ pid_t pid = getpid();
+ kill (pid, SIGFPE);
+ }
+ }
+
+ /* Last: inexact. */
+ if (FE_INEXACT & excepts)
+ {
+ dummy = DBL_MAX;
+ __asm__ __volatile__ ("fadd.d.s0 %0=%1,f1" : "=f" (dummy) : "0" (dummy));
+ }
+
+ /* Success. */
+ return 0;
+}