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      1 /* Copyright (C) 2008-2022 Free Software Foundation, Inc.
      2    Contributor: Joern Rennecke <joern.rennecke (at) embecosm.com>
      3 		on behalf of Synopsys Inc.
      4 
      5 This file is part of GCC.
      6 
      7 GCC is free software; you can redistribute it and/or modify it under
      8 the terms of the GNU General Public License as published by the Free
      9 Software Foundation; either version 3, or (at your option) any later
     10 version.
     11 
     12 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
     13 WARRANTY; without even the implied warranty of MERCHANTABILITY or
     14 FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
     15 for more details.
     16 
     17 Under Section 7 of GPL version 3, you are granted additional
     18 permissions described in the GCC Runtime Library Exception, version
     19 3.1, as published by the Free Software Foundation.
     20 
     21 You should have received a copy of the GNU General Public License and
     22 a copy of the GCC Runtime Library Exception along with this program;
     23 see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
     24 <http://www.gnu.org/licenses/>.  */
     25 
     26 #include "arc-ieee-754.h"
     27 
     28 #if 0 /* DEBUG */
     29 	.global __floatunsidf
     30 	.balign 4
     31 	FUNC(__floatunsidf)
     32 __floatunsidf:
     33 	push_s blink
     34 	bl.d __floatunsidf_c
     35 	push_s r0
     36 	ld_s r2,[sp]
     37 	st_s r1,[sp]
     38 	push_s r0
     39 	bl.d __floatunsidf_asm
     40 	mov_s r0,r2
     41 	pop_s r2
     42 	pop_s r3
     43 	pop_s blink
     44 	cmp r0,r2
     45 	cmp.eq r1,r3
     46 	jeq_s [blink]
     47 	bl abort
     48 	ENDFUNC(__floatunsidf)
     49 #define __floatunsidf __floatunsidf_asm
     50 #endif /* DEBUG */
     51 
     52 	.global __floatunsidf
     53 	.balign 4
     54 	FUNC(__floatunsidf)
     55 __floatunsidf:
     56 	lsr_s r1,r0
     57 	breq_s r0,0,.Lret0
     58 	norm r2,r1
     59 	mov r12,-0x41d ; -(0x3ff+31-1)
     60 	rsub.f r3,r2,11
     61 	add_s r12,r2,r12
     62 	add_s r2,r2,21
     63 #ifdef __LITTLE_ENDIAN__
     64 	lsr DBL0H,r0,r3
     65 	asl_s DBL0L,r0,r2
     66 #else
     67 	asl DBL0L,r0,r2
     68 	lsr_s DBL0H,r0,r3
     69 #endif
     70 	asl_s r12,r12,20
     71 	mov.lo DBL0H,DBL0L
     72 	sub_s DBL0H,DBL0H,r12
     73 .Lret0:	j_s.d [blink]
     74 	mov.ls DBL0L,0
     75 	ENDFUNC(__floatunsidf)
     76