projects / thirdparty / gcc.git / blame
| Commit | Line | Data |
|---|---|---|
| a5544970 | 1 | /* Copyright (C) 2008-2019 Free Software Foundation, Inc. |
| d38a64b4 JR |
2 | Contributor: Joern Rennecke <joern.rennecke@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 | FUNC(__fixdfsi) | |
| 30 | .global __fixdfsi | |
| 31 | .balign 4 | |
| 32 | __fixdfsi: | |
| 33 | push_s blink | |
| 34 | push_s r0 | |
| 35 | bl.d __fixdfsi_c | |
| 36 | push_s r1 | |
| 37 | mov_s r2,r0 | |
| 38 | pop_s r1 | |
| 39 | ld r0,[sp] | |
| 40 | bl.d __fixdfsi_asm | |
| 41 | st r2,[sp] | |
| 42 | pop_s r1 | |
| 43 | pop_s blink | |
| 44 | cmp r0,r1 | |
| 45 | jeq_s [blink] | |
| 46 | bl abort | |
| 47 | ENDFUNC(__fixdfsi) | |
| 48 | #define __fixdfsi __fixdfsi_asm | |
| 49 | #endif /* DEBUG */ | |
| 50 | ||
| 51 | /* If the fraction has to be shifted left by a positive non-zero amount, | |
| 52 | we have to combine bits from DBL0L and DBL0H. If we shift right, | |
| 53 | or shift by zero, we only want to have the bits from DBL0H in r0. */ | |
| 54 | ||
| 55 | .global __fixdfsi | |
| 56 | FUNC(__fixdfsi) | |
| 57 | .balign 4 | |
| 58 | __fixdfsi: | |
| 59 | bbit0 DBL0H,30,.Lret0or1 | |
| 60 | asr r2,DBL0H,20 | |
| 61 | bmsk_s DBL0H,DBL0H,19 | |
| 62 | sub_s r2,r2,19; 0x3ff+20-0x400 | |
| 63 | neg_s r3,r2 | |
| 64 | asr.f 0,r3,11 | |
| 65 | bset_s DBL0H,DBL0H,20 | |
| 66 | #ifdef __LITTLE_ENDIAN__ | |
| 67 | mov.cs DBL0L,DBL0H | |
| 68 | asl DBL0H,DBL0H,r2 | |
| 69 | #else | |
| 70 | asl.cc DBL0H,DBL0H,r2 | |
| 71 | lsr.cs DBL0H,DBL0H,r3 | |
| 72 | #endif | |
| 73 | lsr_s DBL0L,DBL0L,r3 | |
| 74 | ||
| 75 | add.cc r0,r0,r1 | |
| 76 | j_s.d [blink] | |
| 77 | neg.pl r0,r0 | |
| 78 | .Lret0or1: | |
| 79 | add.f r0,DBL0H,0x100000 | |
| 80 | lsr_s r0,r0,30 | |
| 81 | ||
| 82 | bmsk_s r0,r0,0 | |
| 83 | j_s.d [blink] | |
| 84 | neg.mi r0,r0 | |
| 85 | ENDFUNC(__fixdfsi) |