| /* Copyright (C) 2008-2026 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) |