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authorUlrich Drepper <drepper@redhat.com>2000-10-07 22:28:05 +0000
committerUlrich Drepper <drepper@redhat.com>2000-10-07 22:28:05 +0000
commit9b767d19e6f76c10bb0486c113f28145fdd850e5 (patch)
treecaf551d34b76bb965f7a4861057670a19f71b43b /sysdeps
parent19e89d15a12b23d3737991e9b2f094445b2123fa (diff)
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Update.
2000-10-07 Ulrich Drepper <drepper@redhat.com> * include/features.h (__STDC_ISO_10646__): Set to correct date. Patch by Markus Kuhn <Markus.Kuhn@cl.cam.ac.uk>. 2000-10-06 Jes Sorensen <jes@linuxcare.com> * sysdeps/ia64/fpu/fraiseexcpt.c (feraiseexcept): Implement overflow generation by adding DBL_MAX to DBL_MAX instead of setting the bits manually in the fpsr and generating the exception with kill() if necessary. (feraiseexcept): Implement underflow by dividing DBL_MIN by DBL_MIN - similar to the overflow change described above. 2000-08-27 H.J. Lu <hjl@gnu.org> * sysdeps/unix/sysv/linux/ia64/clone.S: Make it a dummy as clone is not supported under Linux/ia64, use clone2. 2000-10-06 Jakub Jelinek <jakub@redhat.com> * malloc/malloc.h (__THROW): Define to nothing if not gcc. * misc/sys/cdefs.h (__THROW): Likewise.
Diffstat (limited to 'sysdeps')
-rw-r--r--sysdeps/ia64/fpu/fraiseexcpt.c23
-rw-r--r--sysdeps/unix/sysv/linux/ia64/clone.S77
2 files changed, 5 insertions, 95 deletions
diff --git a/sysdeps/ia64/fpu/fraiseexcpt.c b/sysdeps/ia64/fpu/fraiseexcpt.c
index 78a8811..57111a9 100644
--- a/sysdeps/ia64/fpu/fraiseexcpt.c
+++ b/sysdeps/ia64/fpu/fraiseexcpt.c
@@ -51,35 +51,20 @@ feraiseexcept (int excepts)
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));
+ dummy = DBL_MAX;
- if (!((unsigned long int) fpsr & FE_OVERFLOW))
- {
- pid_t pid = getpid ();
- kill (pid, SIGFPE);
- }
+ __asm__ __volatile__ ("fadd.d.s0 %0=%1,%1" : "=f" (dummy) : "0" (dummy));
}
/* 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));
+ dummy = DBL_MIN;
- if (!((unsigned long int) fpsr & FE_UNDERFLOW))
- {
- pid_t pid = getpid();
- kill (pid, SIGFPE);
- }
+ __asm__ __volatile__ ("fnma.d.s0 %0=%1,%1,f0" : "=f" (tmp) : "f" (dummy));
}
/* Last: inexact. */
diff --git a/sysdeps/unix/sysv/linux/ia64/clone.S b/sysdeps/unix/sysv/linux/ia64/clone.S
index 75a33d2..0cfaeab 100644
--- a/sysdeps/unix/sysv/linux/ia64/clone.S
+++ b/sysdeps/unix/sysv/linux/ia64/clone.S
@@ -1,76 +1 @@
-/* Copyright (C) 1999,2000 Free Software Foundation, Inc.
-
- 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. */
-
-/* clone is even more special than fork as it mucks with stacks
- and invokes a function in the right context after its all over. */
-
-#include <sysdep.h>
-
-/* int clone(int (*fn)(void *arg), void *child_stack, int flags, void *arg); */
-
-/*
- * Used for both clone and fork system calls. Note that if fn is NULL
- * then clone was called from fork.
- */
-
-ENTRY(__clone)
- add r2 = -16, r33 // save space for fn and arg
- cmp.ne p6,p0 = 0,r33
- ;;
-(p6) add r33 = -16, r33
- add r12 = -16, r12
- ;;
-(p6) st8 [r2] = r32, 8 // save fn for child
- st8 [r12] = r32 // save fn for parent
- ;;
-(p6) st8 [r2] = r35 // save arg for child
- mov r32 = r34 // put flags in out0
- DO_CALL (SYS_ify (clone))
-1:
- ld8 r33 = [r12], 8 // recover fn
- ;;
- ld8 r32 = [r12], 8 // recover arg
-
- cmp.eq p6,p0=-1,r10
-(p6) br.cond.spnt.many __syscall_error // handle error
-
- cmp.ne p7,p0=0,r8
-(p7) ret // parent process, just return
-
- cmp.eq p8,p0=0,r33
-(p8) ret // fork call, return
-
- alloc loc0 = ar.pfs,2,2,2,0
- ;;
- ld8 r2 = [in1], 8 // get address of fn
- mov out0 = in0
- mov loc1 = gp // save gp across indirect call
- ;;
- ld8 gp = [in1] // set new gp
- mov b6 = r2
- br.call.sptk b0 = b6 // call thread routine
- ;;
-
- mov ar.pfs = loc0
- mov gp = loc1
- mov r32 = r8 // exit value
- ;;
- br.call.sptk b0 = _exit // we're out of here
-
-PSEUDO_END(__clone)
-
-weak_alias (__clone, clone)
+/* clone is not supported under Linux/ia64, use clone2. */