diff options
Diffstat (limited to 'sim/common')
| -rw-r--r-- | sim/common/ChangeLog | 8 | ||||
| -rw-r--r-- | sim/common/sim-fpu.c | 46 | ||||
| -rw-r--r-- | sim/common/sim-fpu.h | 8 |
3 files changed, 32 insertions, 30 deletions
diff --git a/sim/common/ChangeLog b/sim/common/ChangeLog index 83b4556..9417d32 100644 --- a/sim/common/ChangeLog +++ b/sim/common/ChangeLog @@ -1,3 +1,11 @@ +2003-06-22 Andrew Cagney <cagney@redhat.com> + + From matthew green <mrg@redhat.com>: + * sim-fpu.h: Update copyright. + (sim_fpu_fraction, sim_fpu_guard): New prototypes. + * sim-fpu.c: Update copyright. + (sim_fpu_fraction, sim_fpu_guard): New inline functions. + 2003-06-17 Frank Ch. Eigler <fche@redhat.com> From Doug Evans <dje@sebabeach.org>: diff --git a/sim/common/sim-fpu.c b/sim/common/sim-fpu.c index 28d61a5..845248a 100644 --- a/sim/common/sim-fpu.c +++ b/sim/common/sim-fpu.c @@ -2,7 +2,7 @@ of the floating point routines in libgcc1.c for targets without hardware floating point. */ -/* Copyright (C) 1994,1997-1998 Free Software Foundation, Inc. +/* Copyright 1994, 1997, 1998, 2003 Free Software Foundation, Inc. This file is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the @@ -1754,33 +1754,7 @@ INLINE_SIM_FPU (int) sim_fpu_inv (sim_fpu *f, const sim_fpu *r) { - if (sim_fpu_is_snan (r)) - { - *f = *r; - f->class = sim_fpu_class_qnan; - return sim_fpu_status_invalid_snan; - } - if (sim_fpu_is_qnan (r)) - { - *f = *r; - f->class = sim_fpu_class_qnan; - return 0; - } - if (sim_fpu_is_infinity (r)) - { - *f = sim_fpu_zero; - f->sign = r->sign; - return 0; - } - if (sim_fpu_is_zero (r)) - { - f->class = sim_fpu_class_infinity; - f->sign = r->sign; - return sim_fpu_status_invalid_div0; - } - *f = *r; - f->normal_exp = - r->normal_exp; - return 0; + return sim_fpu_div (f, &sim_fpu_one, r); } @@ -2214,6 +2188,22 @@ sim_fpu_exp (const sim_fpu *d) } +INLINE_SIM_FPU (unsigned64) +sim_fpu_fraction (const sim_fpu *d) +{ + return d->fraction; +} + + +INLINE_SIM_FPU (unsigned64) +sim_fpu_guard (const sim_fpu *d, int is_double) +{ + unsigned64 rv; + unsigned64 guardmask = LSMASK64 (NR_GUARDS - 1, 0); + rv = (d->fraction & guardmask) >> NR_PAD; + return rv; +} + INLINE_SIM_FPU (int) sim_fpu_is (const sim_fpu *d) diff --git a/sim/common/sim-fpu.h b/sim/common/sim-fpu.h index 755e194..579fbaa 100644 --- a/sim/common/sim-fpu.h +++ b/sim/common/sim-fpu.h @@ -1,5 +1,7 @@ /* Simulator Floating-point support. - Copyright (C) 1997, 1998, 2002 Free Software Foundation, Inc. + + Copyright 1997, 1998, 2002, 2003 Free Software Foundation, Inc. + Contributed by Cygnus Support. This file is part of GDB, the GNU debugger. @@ -42,7 +44,7 @@ with this program; if not, write to the Free Software Foundation, Inc., For unpacked structures (passed by value and reference), the code quality of GCC-2.7 (on x86) for each alternative was compared. - Needless to say the results, while better then for a packed 64 bit + Needless to say the results, while better than for a packed 64 bit object, were still poor (GCC had only limited support for the optimization of references to structure members). Regardless, the struct-by-ref alternative achieved better results when compiled @@ -316,6 +318,8 @@ INLINE_SIM_FPU (int) sim_fpu_is_denorm (const sim_fpu *s); /* !zero */ INLINE_SIM_FPU (int) sim_fpu_sign (const sim_fpu *s); INLINE_SIM_FPU (int) sim_fpu_exp (const sim_fpu *s); +INLINE_SIM_FPU (unsigned64) sim_fpu_fraction (const sim_fpu *s); +INLINE_SIM_FPU (unsigned64) sim_fpu_guard (const sim_fpu *s, int is_double); |