Common.h revision f6c387128427e121477c1b32ad35cdcaa5101ba3 
1/*
2 * Copyright (C) 2008 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16/*
17 * Common defines for all Dalvik code.
18 */
19#ifndef _DALVIK_COMMON
20#define _DALVIK_COMMON
21
22#ifndef LOG_TAG
23# define LOG_TAG "dalvikvm"
24#endif
25
26#include <stdio.h>
27#include <assert.h>
28
29#if !defined(NDEBUG) && defined(WITH_DALVIK_ASSERT)
30# undef assert
31# define assert(x) \
32    ((x) ? ((void)0) : (LOGE("ASSERT FAILED (%s:%d): " #x "\n", \
33        __FILE__, __LINE__), *(int*)39=39, 0) )
34#endif
35
36
37/*
38 * If "very verbose" logging is enabled, make it equivalent to LOGV.
39 * Otherwise, make it disappear.
40 *
41 * Define this above the #include "Dalvik.h" to enable for only a
42 * single file.
43 */
44/* #define VERY_VERBOSE_LOG */
45#if defined(VERY_VERBOSE_LOG)
46# define LOGVV      LOGV
47# define IF_LOGVV() IF_LOGV()
48#else
49# define LOGVV(...) ((void)0)
50# define IF_LOGVV() if (false)
51#endif
52
53
54/*
55 * These match the definitions in the VM specification.
56 */
57#ifdef HAVE_STDINT_H
58# include <stdint.h>    /* C99 */
59typedef uint8_t             u1;
60typedef uint16_t            u2;
61typedef uint32_t            u4;
62typedef uint64_t            u8;
63typedef int8_t              s1;
64typedef int16_t             s2;
65typedef int32_t             s4;
66typedef int64_t             s8;
67#else
68typedef unsigned char       u1;
69typedef unsigned short      u2;
70typedef unsigned int        u4;
71typedef unsigned long long  u8;
72typedef signed char         s1;
73typedef signed short        s2;
74typedef signed int          s4;
75typedef signed long long    s8;
76#endif
77
78/*
79 * Storage for primitive types and object references.
80 *
81 * Some parts of the code (notably object field access) assume that values
82 * are "left aligned", i.e. given "JValue jv", "jv.i" and "*((s4*)&jv)"
83 * yield the same result.  This seems to be guaranteed by gcc on big- and
84 * little-endian systems.
85 */
86typedef union JValue {
87    u1      z;
88    s1      b;
89    u2      c;
90    s2      s;
91    s4      i;
92    s8      j;
93    float   f;
94    double  d;
95    void*   l;
96} JValue;
97
98/*
99 * Some systems might have this in <stdbool.h>.
100 */
101#ifndef __bool_true_false_are_defined
102typedef enum { false=0, true=!false } bool;
103#define __bool_true_false_are_defined 1
104#endif
105
106#define NELEM(x) ((int) (sizeof(x) / sizeof((x)[0])))
107
108
109#if defined(HAVE_ENDIAN_H)
110# include <endian.h>
111#else /*not HAVE_ENDIAN_H*/
112# define __BIG_ENDIAN 4321
113# define __LITTLE_ENDIAN 1234
114# if defined(HAVE_LITTLE_ENDIAN)
115#  define __BYTE_ORDER __LITTLE_ENDIAN
116# else
117#  define __BYTE_ORDER __BIG_ENDIAN
118# endif
119#endif /*not HAVE_ENDIAN_H*/
120
121
122#if 0
123/*
124 * Pretend we have the Android logging macros.  These are replaced by the
125 * Android logging implementation.
126 */
127#define ANDROID_LOG_DEBUG 3
128#define LOGV(...)    LOG_PRI(2, 0, __VA_ARGS__)
129#define LOGD(...)    LOG_PRI(3, 0, __VA_ARGS__)
130#define LOGI(...)    LOG_PRI(4, 0, __VA_ARGS__)
131#define LOGW(...)    LOG_PRI(5, 0, __VA_ARGS__)
132#define LOGE(...)    LOG_PRI(6, 0, __VA_ARGS__)
133#define MIN_LOG_LEVEL   2
134
135#define LOG_PRI(priority, tag, ...) do {                            \
136        if (priority >= MIN_LOG_LEVEL) {                            \
137            dvmFprintf(stdout, "%s:%-4d ", __FILE__, __LINE__);     \
138            dvmFprintf(stdout, __VA_ARGS__);                        \
139        }                                                           \
140    } while(0)
141#else
142# include "utils/Log.h"
143#endif
144
145#endif /*_DALVIK_COMMON*/
146