diff options
| -rw-r--r-- | ChangeLog | 6 | ||||
| -rw-r--r-- | sysdeps/i386/fpu/fegetenv.c | 6 | ||||
| -rw-r--r-- | sysdeps/unix/sysv/linux/i386/getcontext.S | 6 |
3 files changed, 16 insertions, 2 deletions
diff --git a/ChangeLog b/ChangeLog index 571330c35d..e87c0a6a45 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,3 +1,9 @@ +2003-05-19 Ed Connell <ed.connell@sas.com> + + * sysdeps/unix/sysv/linux/i386/getcontext.S (getcontext): Retain + floating point mask. + * sysdeps/i386/fpu/fegetenv.c (fegetenv): Likewise. + 2003-06-23 Ulrich Drepper <drepper@redhat.com> * sysdeps/pthread/aio_misc.h: Mark __aio_requests_mutex, diff --git a/sysdeps/i386/fpu/fegetenv.c b/sysdeps/i386/fpu/fegetenv.c index 5eef171308..fb955cf565 100644 --- a/sysdeps/i386/fpu/fegetenv.c +++ b/sysdeps/i386/fpu/fegetenv.c @@ -1,5 +1,5 @@ /* Store current floating-point environment. - Copyright (C) 1997,99,2000,01 Free Software Foundation, Inc. + Copyright (C) 1997,1999,2000,2001,2003 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997. @@ -25,6 +25,10 @@ int __fegetenv (fenv_t *envp) { __asm__ ("fnstenv %0" : "=m" (*envp)); + /* And load it right back since the processor changes the mask. + Intel thought this opcode to be used in interrupt handlers which + would block all exceptions. */ + __asm__ ("fldenv %0" : : "m" (*envp)); /* Success. */ return 0; diff --git a/sysdeps/unix/sysv/linux/i386/getcontext.S b/sysdeps/unix/sysv/linux/i386/getcontext.S index 9db129f5a6..68541d5d80 100644 --- a/sysdeps/unix/sysv/linux/i386/getcontext.S +++ b/sysdeps/unix/sysv/linux/i386/getcontext.S @@ -1,5 +1,5 @@ /* Save current context. - Copyright (C) 2001, 2002 Free Software Foundation, Inc. + Copyright (C) 2001, 2002, 2003 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Ulrich Drepper <drepper@redhat.com>, 2001. @@ -56,6 +56,10 @@ ENTRY(__getcontext) movl %ecx, oFPREGS(%eax) /* Save the floating-point context. */ fnstenv (%ecx) + /* And load it right back since the processor changes the mask. + Intel thought this opcode to be used in interrupt handlers which + would block all exceptions. */ + fldenv (%ecx) /* Save the current signal mask. */ pushl %ebx |