1// Copyright 2015, ARM Limited
2// All rights reserved.
3//
4// Redistribution and use in source and binary forms, with or without
5// modification, are permitted provided that the following conditions are met:
6//
7//   * Redistributions of source code must retain the above copyright notice,
8//     this list of conditions and the following disclaimer.
9//   * Redistributions in binary form must reproduce the above copyright notice,
10//     this list of conditions and the following disclaimer in the documentation
11//     and/or other materials provided with the distribution.
12//   * Neither the name of ARM Limited nor the names of its contributors may be
13//     used to endorse or promote products derived from this software without
14//     specific prior written permission.
15//
16// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS CONTRIBUTORS "AS IS" AND
17// ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
18// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
19// DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
20// FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21// DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
22// SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
23// CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
24// OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
25// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26
27#ifndef VIXL_GLOBALS_H
28#define VIXL_GLOBALS_H
29
30// Get standard C99 macros for integer types.
31#ifndef __STDC_CONSTANT_MACROS
32#define __STDC_CONSTANT_MACROS
33#endif
34
35#ifndef __STDC_LIMIT_MACROS
36#define __STDC_LIMIT_MACROS
37#endif
38
39#ifndef __STDC_FORMAT_MACROS
40#define __STDC_FORMAT_MACROS
41#endif
42
43#ifdef __ANDROID__
44#ifndef LOG_TAG
45#define LOG_TAG   "VIXL"
46#endif
47#include <cutils/log.h>
48#endif
49
50#include <stdint.h>
51#include <inttypes.h>
52
53#include <assert.h>
54#include <stdarg.h>
55#include <stdio.h>
56#include <stdint.h>
57#include <stdlib.h>
58#include <stddef.h>
59#include "vixl/platform.h"
60
61
62typedef uint8_t byte;
63
64// Type for half-precision (16 bit) floating point numbers.
65typedef uint16_t float16;
66
67const int KBytes = 1024;
68const int MBytes = 1024 * KBytes;
69
70#ifdef __ANDROID__
71  #define VIXL_ABORT() ALOGE("in %s, line %i", __FILE__, __LINE__); abort()
72#else
73  #define VIXL_ABORT() printf("in %s, line %i", __FILE__, __LINE__); abort()
74#endif
75
76#ifdef VIXL_DEBUG
77  #define VIXL_ASSERT(condition) assert(condition)
78  #define VIXL_CHECK(condition) VIXL_ASSERT(condition)
79  #ifdef __ANDROID__
80    #define VIXL_UNIMPLEMENTED() ALOGD("UNIMPLEMENTED\t"); VIXL_ABORT()
81    #define VIXL_UNREACHABLE() ALOGD("UNREACHABLE\t"); VIXL_ABORT()
82  #else
83    #define VIXL_UNIMPLEMENTED() printf("UNIMPLEMENTED\t"); VIXL_ABORT()
84    #define VIXL_UNREACHABLE() printf("UNREACHABLE\t"); VIXL_ABORT()
85  #endif
86#else
87  #define VIXL_ASSERT(condition) ((void) 0)
88  #define VIXL_CHECK(condition) assert(condition)
89  #define VIXL_UNIMPLEMENTED() ((void) 0)
90  #define VIXL_UNREACHABLE() ((void) 0)
91#endif
92// This is not as powerful as template based assertions, but it is simple.
93// It assumes that the descriptions are unique. If this starts being a problem,
94// we can switch to a different implemention.
95#define VIXL_CONCAT(a, b) a##b
96#define VIXL_STATIC_ASSERT_LINE(line, condition) \
97  typedef char VIXL_CONCAT(STATIC_ASSERT_LINE_, line)[(condition) ? 1 : -1] \
98  __attribute__((unused))
99#define VIXL_STATIC_ASSERT(condition) VIXL_STATIC_ASSERT_LINE(__LINE__, condition) //NOLINT
100
101template <typename T> inline void USE(T) {}
102template <typename T> inline void USE(T, T) {}
103template <typename T> inline void USE(T, T, T) {}
104template <typename T> inline void USE(T, T, T, T) {}
105
106#ifdef __ANDROID__
107  #define VIXL_ALIGNMENT_EXCEPTION() ALOGD("ALIGNMENT EXCEPTION\t"); VIXL_ABORT() //NOLINT
108#else
109  #define VIXL_ALIGNMENT_EXCEPTION() printf("ALIGNMENT EXCEPTION\t"); VIXL_ABORT() //NOLINT
110#endif
111
112// The clang::fallthrough attribute is used along with the Wimplicit-fallthrough
113// argument to annotate intentional fall-through between switch labels.
114// For more information please refer to:
115// http://clang.llvm.org/docs/AttributeReference.html#fallthrough-clang-fallthrough
116#ifndef __has_warning
117  #define __has_warning(x)  0
118#endif
119
120// Note: This option is only available for Clang. And will only be enabled for
121// C++11(201103L).
122#if __has_warning("-Wimplicit-fallthrough") && __cplusplus >= 201103L
123  #define VIXL_FALLTHROUGH() [[clang::fallthrough]] //NOLINT
124#else
125  #define VIXL_FALLTHROUGH() do {} while (0)
126#endif
127
128#endif  // VIXL_GLOBALS_H
129