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.

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);