From ae251b0b58b6fff00a572fe1497eddec8433a9d3 Mon Sep 17 00:00:00 2001 From: "David S. Miller" Date: Wed, 30 May 2012 13:41:01 -0700 Subject: Fix underflow generation in soft-fp. * soft-fp/soft-fp.h (FP_CUR_EXCEPTIONS): Define. (FP_TRAPPING_EXCEPTIONS): Provide default implementation. * sysdeps/sparc/sparc32/soft-fp/sfp-machine.h (FP_TRAPPING_EXCEPTIONS): Define. * sysdeps/sparc/sparc64/soft-fp/sfp-machine.h (FP_TRAPPING_EXCEPTIONS): Define. * soft-fp/op-common.h (_FP_PACK_SEMIRAW): Signal underflow for subnormals only when inexact has been signalled or underflow exceptions are enabled. (_FP_PACK_CANONICAL): Likewise. --- sysdeps/sparc/sparc64/soft-fp/sfp-machine.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'sysdeps/sparc/sparc64') diff --git a/sysdeps/sparc/sparc64/soft-fp/sfp-machine.h b/sysdeps/sparc/sparc64/soft-fp/sfp-machine.h index 36f92d64fb..9bd4298c9c 100644 --- a/sysdeps/sparc/sparc64/soft-fp/sfp-machine.h +++ b/sysdeps/sparc/sparc64/soft-fp/sfp-machine.h @@ -1,6 +1,6 @@ /* Machine-dependent software floating-point definitions. Sparc64 userland (_Q_* and _Qp_*) version. - Copyright (C) 1997, 1998, 1999, 2006 Free Software Foundation, Inc. + Copyright (C) 1997, 1998, 1999, 2006, 2012 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Richard Henderson (rth@cygnus.com), Jakub Jelinek (jj@ultra.linux.cz) and @@ -100,6 +100,7 @@ do { \ _FPU_GETCW(_fcw); \ } while (0) +#define FP_TRAPPING_EXCEPTIONS ((_fcw >> 23) & 0x1f) #define FP_INHIBIT_RESULTS ((_fcw >> 23) & _fex) /* Simulate exceptions using double arithmetics. */ -- cgit 1.4.1