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| 1 // Copyright (c) 2015, the Dartino project authors. Please see the AUTHORS file | |
| 2 // for details. All rights reserved. Use of this source code is governed by a | |
| 3 // BSD-style license that can be found in the LICENSE.md file. | |
| 4 | |
| 5 // This file contains all the missing pieces that LK should implement soon | |
| 6 // but currently does not. | |
| 7 | |
| 8 #include <stdio.h> | |
| 9 | |
| 10 // LK currently lacks an implementation for abort. | |
| 11 void abort(void) { | |
| 12 printf("Aborted (c-call).\n"); | |
| 13 while (1) {} | |
| 14 } | |
| 15 | |
| 16 // Guard implementation from libcxx. See | |
| 17 // http://llvm.org/svn/llvm-project/libcxxabi/trunk/src/cxa_guard.cpp | |
| 18 | |
| 19 // A 32-bit, 4-byte-aligned static data value. The least significant 2 bits must | |
| 20 // be statically initialized to 0. | |
| 21 typedef unsigned guard_type; | |
| 22 | |
| 23 int __cxa_guard_acquire(guard_type* guard_object) { | |
| 24 return !((*guard_object) & 1); | |
| 25 } | |
| 26 | |
| 27 void __cxa_guard_release(guard_type* guard_object) { | |
| 28 *guard_object = 0x1; | |
| 29 } | |
| 30 | |
| 31 void __cxa_guard_abort(guard_type* guard_object) { | |
| 32 *guard_object = 0; | |
| 33 } | |
| 34 | |
| 35 // signbit implementation form FreeBSD // | |
| 36 | |
| 37 /*- | |
| 38 * Copyright (c) 2002, 2003 David Schultz <das@FreeBSD.ORG> | |
| 39 * All rights reserved. | |
| 40 * | |
| 41 * Redistribution and use in source and binary forms, with or without | |
| 42 * modification, are permitted provided that the following conditions | |
| 43 * are met: | |
| 44 * 1. Redistributions of source code must retain the above copyright | |
| 45 * notice, this list of conditions and the following disclaimer. | |
| 46 * 2. Redistributions in binary form must reproduce the above copyright | |
| 47 * notice, this list of conditions and the following disclaimer in the | |
| 48 * documentation and/or other materials provided with the distribution. | |
| 49 * | |
| 50 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND | |
| 51 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
| 52 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
| 53 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE | |
| 54 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
| 55 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
| 56 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
| 57 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
| 58 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
| 59 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
| 60 * SUCH DAMAGE. | |
| 61 */ | |
| 62 | |
| 63 union IEEEl2bits { | |
| 64 long double e; | |
| 65 struct { | |
| 66 #if LITTLE_ENDIAN | |
| 67 unsigned int manl :32; | |
| 68 unsigned int manh :20; | |
| 69 unsigned int exp :11; | |
| 70 unsigned int sign :1; | |
| 71 #else | |
| 72 unsigned int sign :1; | |
| 73 unsigned int exp :11; | |
| 74 unsigned int manh :20; | |
| 75 unsigned int manl :32; | |
| 76 #endif | |
| 77 } bits; | |
| 78 }; | |
| 79 | |
| 80 int __signbit(double val) { | |
| 81 union IEEEl2bits as_bits; | |
| 82 as_bits.e = val; | |
| 83 return as_bits.bits.sign; | |
| 84 } | |
| 85 | |
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Chromium Code Reviews
Issue 1659163007:
Rename fletch -> dartino (Closed)
Base URL: https://github.com/dartino/sdk.git@master