> On May 29, 2018, at 4:17 PM, Jakub Jelinek <ja...@redhat.com> wrote:
>
> On Tue, May 29, 2018 at 03:01:20PM -0400, Paul Koning wrote:
>> +short udivmodhi4 ();
>
> We do want real prototypes, not K&R declarations.
Fixed. I had copied that from the SImode file.
>
>> Added: svn:eol-style
>> ## -0,0 +1 ##
>> +native
>
> Why?
My svn is set up to do that automatically, but I see GCC doesn't use this.
Fixed.
I noticed the types in the udiv and umod functions are signed, that's also that
way in udivmod.c. Should I change those to unsigned?
paul
Index: config/pdp11/t-pdp11
===================================================================
--- config/pdp11/t-pdp11 (revision 260806)
+++ config/pdp11/t-pdp11 (working copy)
@@ -1,5 +1,7 @@
LIB2ADD = $(srcdir)/udivmod.c \
$(srcdir)/udivmodsi4.c \
+ $(srcdir)/udivhi3.c \
+ $(srcdir)/udivmodhi4.c \
$(srcdir)/memcmp.c \
$(srcdir)/memcpy.c \
$(srcdir)/memmove.c \
Index: udivhi3.c
===================================================================
--- udivhi3.c (nonexistent)
+++ udivhi3.c (working copy)
@@ -0,0 +1,37 @@
+/* Copyright (C) 2000-2018 Free Software Foundation, Inc.
+
+This file is part of GCC.
+
+GCC is free software; you can redistribute it and/or modify it under
+the terms of the GNU General Public License as published by the Free
+Software Foundation; either version 3, or (at your option) any later
+version.
+
+GCC 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 General Public License
+for more details.
+
+Under Section 7 of GPL version 3, you are granted additional
+permissions described in the GCC Runtime Library Exception, version
+3.1, as published by the Free Software Foundation.
+
+You should have received a copy of the GNU General Public License and
+a copy of the GCC Runtime Library Exception along with this program;
+see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
+<http://www.gnu.org/licenses/>. */
+
+unsigned short udivmodhi4(unsigned short, unsigned short, int);
+
+short
+__udivhi3 (short a, short b)
+{
+ return udivmodhi4 (a, b, 0);
+}
+
+short
+__umodhi3 (short a, short b)
+{
+ return udivmodhi4 (a, b, 1);
+}
+
Index: udivmodhi4.c
===================================================================
--- udivmodhi4.c (nonexistent)
+++ udivmodhi4.c (working copy)
@@ -0,0 +1,47 @@
+/* Copyright (C) 2000-2018 Free Software Foundation, Inc.
+
+This file is part of GCC.
+
+GCC is free software; you can redistribute it and/or modify it under
+the terms of the GNU General Public License as published by the Free
+Software Foundation; either version 3, or (at your option) any later
+version.
+
+GCC 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 General Public License
+for more details.
+
+Under Section 7 of GPL version 3, you are granted additional
+permissions described in the GCC Runtime Library Exception, version
+3.1, as published by the Free Software Foundation.
+
+You should have received a copy of the GNU General Public License and
+a copy of the GCC Runtime Library Exception along with this program;
+see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
+<http://www.gnu.org/licenses/>. */
+
+unsigned short
+udivmodhi4(unsigned short num, unsigned short den, int modwanted)
+{
+ unsigned short bit = 1;
+ unsigned short res = 0;
+
+ while (den < num && bit && !(den & (1<<15)))
+ {
+ den <<=1;
+ bit <<=1;
+ }
+ while (bit)
+ {
+ if (num >= den)
+ {
+ num -= den;
+ res |= bit;
+ }
+ bit >>=1;
+ den >>=1;
+ }
+ if (modwanted) return num;
+ return res;
+}
