Common.h revision 734155efc18543eab20b763f9a315ab1a44240ac 
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/*
18 * Common defines for all Dalvik code.
19 */
20#ifndef _DALVIK_COMMON
21#define _DALVIK_COMMON
22
23#ifndef LOG_TAG
24# define LOG_TAG "dalvikvm"
25#endif
26
27#include <stdio.h>
28#include <assert.h>
29
30#if !defined(NDEBUG) && defined(WITH_DALVIK_ASSERT)
31# undef assert
32# define assert(x) \
33    ((x) ? ((void)0) : (LOGE("ASSERT FAILED (%s:%d): %s\n", \
34        __FILE__, __LINE__, #x), *(int*)39=39, 0) )
35#endif
36
37
38/*
39 * If "very verbose" logging is enabled, make it equivalent to LOGV.
40 * Otherwise, make it disappear.
41 *
42 * Define this above the #include "Dalvik.h" to enable for only a
43 * single file.
44 */
45/* #define VERY_VERBOSE_LOG */
46#if defined(VERY_VERBOSE_LOG)
47# define LOGVV      LOGV
48# define IF_LOGVV() IF_LOGV()
49#else
50# define LOGVV(...) ((void)0)
51# define IF_LOGVV() if (false)
52#endif
53
54
55/*
56 * These match the definitions in the VM specification.
57 */
58#ifdef HAVE_STDINT_H
59# include <stdint.h>    /* C99 */
60typedef uint8_t             u1;
61typedef uint16_t            u2;
62typedef uint32_t            u4;
63typedef uint64_t            u8;
64typedef int8_t              s1;
65typedef int16_t             s2;
66typedef int32_t             s4;
67typedef int64_t             s8;
68#else
69typedef unsigned char       u1;
70typedef unsigned short      u2;
71typedef unsigned int        u4;
72typedef unsigned long long  u8;
73typedef signed char         s1;
74typedef signed short        s2;
75typedef signed int          s4;
76typedef signed long long    s8;
77#endif
78
79/*
80 * Storage for primitive types and object references.
81 *
82 * Some parts of the code (notably object field access) assume that values
83 * are "left aligned", i.e. given "JValue jv", "jv.i" and "*((s4*)&jv)"
84 * yield the same result.  This seems to be guaranteed by gcc on big- and
85 * little-endian systems.
86 */
87typedef union JValue {
88    u1      z;
89    s1      b;
90    u2      c;
91    s2      s;
92    s4      i;
93    s8      j;
94    float   f;
95    double  d;
96    void*   l;
97} JValue;
98
99/*
100 * Some systems might have this in <stdbool.h>.
101 */
102#ifndef __bool_true_false_are_defined
103typedef enum { false=0, true=!false } bool;
104#define __bool_true_false_are_defined 1
105#endif
106
107#define NELEM(x) ((int) (sizeof(x) / sizeof((x)[0])))
108
109
110#if defined(HAVE_ENDIAN_H)
111# include <endian.h>
112#else /*not HAVE_ENDIAN_H*/
113# define __BIG_ENDIAN 4321
114# define __LITTLE_ENDIAN 1234
115# if defined(HAVE_LITTLE_ENDIAN)
116#  define __BYTE_ORDER __LITTLE_ENDIAN
117# else
118#  define __BYTE_ORDER __BIG_ENDIAN
119# endif
120#endif /*not HAVE_ENDIAN_H*/
121
122
123#if 0
124/*
125 * Pretend we have the Android logging macros.  These are replaced by the
126 * Android logging implementation.
127 */
128#define ANDROID_LOG_DEBUG 3
129#define LOGV(...)    LOG_PRI(2, 0, __VA_ARGS__)
130#define LOGD(...)    LOG_PRI(3, 0, __VA_ARGS__)
131#define LOGI(...)    LOG_PRI(4, 0, __VA_ARGS__)
132#define LOGW(...)    LOG_PRI(5, 0, __VA_ARGS__)
133#define LOGE(...)    LOG_PRI(6, 0, __VA_ARGS__)
134#define MIN_LOG_LEVEL   2
135
136#define LOG_PRI(priority, tag, ...) do {                            \
137        if (priority >= MIN_LOG_LEVEL) {                            \
138            dvmFprintf(stdout, "%s:%-4d ", __FILE__, __LINE__);     \
139            dvmFprintf(stdout, __VA_ARGS__);                        \
140        }                                                           \
141    } while(0)
142#else
143# include "utils/Log.h"
144#endif
145
146#endif /*_DALVIK_COMMON*/
147