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/* Copyright (C) 2008-2022 Free Software Foundation, Inc.
Contributor: Joern Rennecke <joern.rennecke@embecosm.com>
on behalf of Synopsys 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/>. */
#include "arc-ieee-754.h"
#if 0 /* DEBUG */
FUNC(__fixdfsi)
.global __fixdfsi
.balign 4
__fixdfsi:
push_s blink
push_s r0
bl.d __fixdfsi_c
push_s r1
mov_s r2,r0
pop_s r1
ld r0,[sp]
bl.d __fixdfsi_asm
st r2,[sp]
pop_s r1
pop_s blink
cmp r0,r1
jeq_s [blink]
bl abort
ENDFUNC(__fixdfsi)
#define __fixdfsi __fixdfsi_asm
#endif /* DEBUG */
/* If the fraction has to be shifted left by a positive non-zero amount,
we have to combine bits from DBL0L and DBL0H. If we shift right,
or shift by zero, we only want to have the bits from DBL0H in r0. */
.global __fixdfsi
FUNC(__fixdfsi)
.balign 4
__fixdfsi:
bbit0 DBL0H,30,.Lret0or1
asr r2,DBL0H,20
bmsk_s DBL0H,DBL0H,19
sub_s r2,r2,19; 0x3ff+20-0x400
neg_s r3,r2
asr.f 0,r3,11
bset_s DBL0H,DBL0H,20
#ifdef __LITTLE_ENDIAN__
mov.cs DBL0L,DBL0H
asl DBL0H,DBL0H,r2
#else
asl.cc DBL0H,DBL0H,r2
lsr.cs DBL0H,DBL0H,r3
#endif
lsr_s DBL0L,DBL0L,r3
add.cc r0,r0,r1
j_s.d [blink]
neg.pl r0,r0
.Lret0or1:
add.f r0,DBL0H,0x100000
lsr_s r0,r0,30
bmsk_s r0,r0,0
j_s.d [blink]
neg.mi r0,r0
ENDFUNC(__fixdfsi)