projects / thirdparty / gcc.git / blame
| Commit | Line | Data |
|---|---|---|
| f6a83b4a | 1 | /* libgcc routines for MSP430 |
| 7adcbafe | 2 | Copyright (C) 2005-2022 Free Software Foundation, Inc. |
| f6a83b4a DD |
3 | Contributed by Red Hat. |
| 4 | ||
| 5 | This file is part of GCC. | |
| 6 | ||
| 7 | GCC is free software; you can redistribute it and/or modify it | |
| 8 | under the terms of the GNU General Public License as published | |
| 9 | by the Free Software Foundation; either version 3, or (at your | |
| 10 | option) any later version. | |
| 11 | ||
| 12 | GCC is distributed in the hope that it will be useful, but WITHOUT | |
| 13 | ANY WARRANTY; without even the implied warranty of MERCHANTABILITY | |
| 14 | or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public | |
| 15 | License 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 | UINT_TYPE C3(udivmod,NAME_MODE,4) (UINT_TYPE, UINT_TYPE, word_type); | |
| 27 | SINT_TYPE C3(__div,NAME_MODE,3) (SINT_TYPE, SINT_TYPE); | |
| 28 | SINT_TYPE C3(__mod,NAME_MODE,3) (SINT_TYPE, SINT_TYPE); | |
| 29 | UINT_TYPE C3(__udiv,NAME_MODE,3) (UINT_TYPE, UINT_TYPE); | |
| 30 | UINT_TYPE C3(__umod,NAME_MODE,3) (UINT_TYPE, UINT_TYPE); | |
| 31 | ||
| 32 | UINT_TYPE | |
| 33 | C3(udivmod,NAME_MODE,4) (UINT_TYPE num, UINT_TYPE den, word_type modwanted) | |
| 34 | { | |
| 35 | UINT_TYPE bit = 1; | |
| 36 | UINT_TYPE res = 0; | |
| 37 | ||
| 38 | while (den < num && bit && !(den & (1L << BITS_MINUS_1))) | |
| 39 | { | |
| 40 | den <<= 1; | |
| 41 | bit <<= 1; | |
| 42 | } | |
| 43 | while (bit) | |
| 44 | { | |
| 45 | if (num >= den) | |
| 46 | { | |
| 47 | num -= den; | |
| 48 | res |= bit; | |
| 49 | } | |
| 50 | bit >>= 1; | |
| 51 | den >>= 1; | |
| 52 | } | |
| 53 | if (modwanted) | |
| 54 | return num; | |
| 55 | return res; | |
| 56 | } | |
| 57 | ||
| 58 | SINT_TYPE | |
| 59 | C3(__div,NAME_MODE,3) (SINT_TYPE a, SINT_TYPE b) | |
| 60 | { | |
| 61 | word_type neg = 0; | |
| 62 | SINT_TYPE res; | |
| 63 | ||
| 64 | if (a < 0) | |
| 65 | { | |
| 66 | a = -a; | |
| 67 | neg = !neg; | |
| 68 | } | |
| 69 | ||
| 70 | if (b < 0) | |
| 71 | { | |
| 72 | b = -b; | |
| 73 | neg = !neg; | |
| 74 | } | |
| 75 | ||
| 76 | res = C3(udivmod,NAME_MODE,4) (a, b, 0); | |
| 77 | ||
| 78 | if (neg) | |
| 79 | res = -res; | |
| 80 | ||
| 81 | return res; | |
| 82 | } | |
| 83 | ||
| 84 | SINT_TYPE | |
| 85 | C3(__mod,NAME_MODE,3) (SINT_TYPE a, SINT_TYPE b) | |
| 86 | { | |
| 87 | word_type neg = 0; | |
| 88 | SINT_TYPE res; | |
| 89 | ||
| 90 | if (a < 0) | |
| 91 | { | |
| 92 | a = -a; | |
| 93 | neg = 1; | |
| 94 | } | |
| 95 | ||
| 96 | if (b < 0) | |
| 97 | b = -b; | |
| 98 | ||
| 99 | res = C3(udivmod,NAME_MODE,4) (a, b, 1); | |
| 100 | ||
| 101 | if (neg) | |
| 102 | res = -res; | |
| 103 | ||
| 104 | return res; | |
| 105 | } | |
| 106 | ||
| 107 | UINT_TYPE | |
| 108 | C3(__udiv,NAME_MODE,3) (UINT_TYPE a, UINT_TYPE b) | |
| 109 | { | |
| 110 | return C3(udivmod,NAME_MODE,4) (a, b, 0); | |
| 111 | } | |
| 112 | ||
| 113 | UINT_TYPE | |
| 114 | C3(__umod,NAME_MODE,3) (UINT_TYPE a, UINT_TYPE b) | |
| 115 | { | |
| 116 | return C3(udivmod,NAME_MODE,4) (a, b, 1); | |
| 117 | } |