The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1 | #ifndef QEMU_OSDEP_H |
| 2 | #define QEMU_OSDEP_H |
| 3 | |
| 4 | #include <stdarg.h> |
David 'Digit' Turner | 2910f18 | 2010-05-10 18:48:35 -0700 | [diff] [blame] | 5 | #include <stddef.h> |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 6 | #ifdef __OpenBSD__ |
| 7 | #include <sys/types.h> |
| 8 | #include <sys/signal.h> |
| 9 | #endif |
| 10 | |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 11 | #include <sys/time.h> |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 12 | |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 13 | #ifndef glue |
| 14 | #define xglue(x, y) x ## y |
| 15 | #define glue(x, y) xglue(x, y) |
| 16 | #define stringify(s) tostring(s) |
| 17 | #define tostring(s) #s |
| 18 | #endif |
| 19 | |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 20 | #ifndef likely |
| 21 | #if __GNUC__ < 3 |
| 22 | #define __builtin_expect(x, n) (x) |
| 23 | #endif |
| 24 | |
| 25 | #define likely(x) __builtin_expect(!!(x), 1) |
| 26 | #define unlikely(x) __builtin_expect(!!(x), 0) |
| 27 | #endif |
| 28 | |
David Turner | f7dd220 | 2010-09-10 10:59:22 +0200 | [diff] [blame] | 29 | #ifdef CONFIG_NEED_OFFSETOF |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 30 | #define offsetof(TYPE, MEMBER) ((size_t) &((TYPE *) 0)->MEMBER) |
| 31 | #endif |
| 32 | #ifndef container_of |
| 33 | #define container_of(ptr, type, member) ({ \ |
| 34 | const typeof(((type *) 0)->member) *__mptr = (ptr); \ |
| 35 | (type *) ((char *) __mptr - offsetof(type, member));}) |
| 36 | #endif |
| 37 | |
David 'Digit' Turner | 2910f18 | 2010-05-10 18:48:35 -0700 | [diff] [blame] | 38 | /* Convert from a base type to a parent type, with compile time checking. */ |
| 39 | #ifdef __GNUC__ |
| 40 | #define DO_UPCAST(type, field, dev) ( __extension__ ( { \ |
| 41 | char __attribute__((unused)) offset_must_be_zero[ \ |
| 42 | -offsetof(type, field)]; \ |
| 43 | container_of(dev, type, field);})) |
| 44 | #else |
| 45 | #define DO_UPCAST(type, field, dev) container_of(dev, type, field) |
| 46 | #endif |
| 47 | |
| 48 | #define typeof_field(type, field) typeof(((type *)0)->field) |
| 49 | #define type_check(t1,t2) ((t1*)0 - (t2*)0) |
| 50 | |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 51 | #ifndef MIN |
| 52 | #define MIN(a, b) (((a) < (b)) ? (a) : (b)) |
| 53 | #endif |
| 54 | #ifndef MAX |
| 55 | #define MAX(a, b) (((a) > (b)) ? (a) : (b)) |
| 56 | #endif |
| 57 | |
David 'Digit' Turner | 45c3be0 | 2011-05-09 14:52:14 +0200 | [diff] [blame] | 58 | #ifndef DIV_ROUND_UP |
| 59 | #define DIV_ROUND_UP(n,d) (((n) + (d) - 1) / (d)) |
| 60 | #endif |
| 61 | |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 62 | #ifndef ARRAY_SIZE |
| 63 | #define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0])) |
| 64 | #endif |
| 65 | |
| 66 | #ifndef always_inline |
David 'Digit' Turner | 2910f18 | 2010-05-10 18:48:35 -0700 | [diff] [blame] | 67 | #if !((__GNUC__ < 3) || defined(__APPLE__)) |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 68 | #ifdef __OPTIMIZE__ |
David 'Digit' Turner | 2910f18 | 2010-05-10 18:48:35 -0700 | [diff] [blame] | 69 | #define inline __attribute__ (( always_inline )) __inline__ |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 70 | #endif |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 71 | #endif |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 72 | #else |
| 73 | #define inline always_inline |
| 74 | #endif |
| 75 | |
| 76 | #ifdef __i386__ |
| 77 | #define REGPARM __attribute((regparm(3))) |
| 78 | #else |
| 79 | #define REGPARM |
| 80 | #endif |
| 81 | |
| 82 | #define qemu_printf printf |
| 83 | |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 84 | #if defined (__GNUC__) && defined (__GNUC_MINOR__) |
| 85 | # define QEMU_GNUC_PREREQ(maj, min) \ |
| 86 | ((__GNUC__ << 16) + __GNUC_MINOR__ >= ((maj) << 16) + (min)) |
| 87 | #else |
| 88 | # define QEMU_GNUC_PREREQ(maj, min) 0 |
| 89 | #endif |
| 90 | |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 91 | void *qemu_memalign(size_t alignment, size_t size); |
| 92 | void *qemu_vmalloc(size_t size); |
| 93 | void qemu_vfree(void *ptr); |
| 94 | |
David 'Digit' Turner | 45c3be0 | 2011-05-09 14:52:14 +0200 | [diff] [blame] | 95 | #define QEMU_MADV_INVALID -1 |
| 96 | |
| 97 | #if defined(CONFIG_MADVISE) |
| 98 | |
| 99 | #define QEMU_MADV_WILLNEED MADV_WILLNEED |
| 100 | #define QEMU_MADV_DONTNEED MADV_DONTNEED |
| 101 | #ifdef MADV_DONTFORK |
| 102 | #define QEMU_MADV_DONTFORK MADV_DONTFORK |
| 103 | #else |
| 104 | #define QEMU_MADV_DONTFORK QEMU_MADV_INVALID |
| 105 | #endif |
| 106 | #ifdef MADV_MERGEABLE |
| 107 | #define QEMU_MADV_MERGEABLE MADV_MERGEABLE |
| 108 | #else |
| 109 | #define QEMU_MADV_MERGEABLE QEMU_MADV_INVALID |
| 110 | #endif |
| 111 | |
| 112 | #elif defined(CONFIG_POSIX_MADVISE) |
| 113 | |
| 114 | #define QEMU_MADV_WILLNEED POSIX_MADV_WILLNEED |
| 115 | #define QEMU_MADV_DONTNEED POSIX_MADV_DONTNEED |
| 116 | #define QEMU_MADV_DONTFORK QEMU_MADV_INVALID |
| 117 | #define QEMU_MADV_MERGEABLE QEMU_MADV_INVALID |
| 118 | |
| 119 | #else /* no-op */ |
| 120 | |
| 121 | #define QEMU_MADV_WILLNEED QEMU_MADV_INVALID |
| 122 | #define QEMU_MADV_DONTNEED QEMU_MADV_INVALID |
| 123 | #define QEMU_MADV_DONTFORK QEMU_MADV_INVALID |
| 124 | #define QEMU_MADV_MERGEABLE QEMU_MADV_INVALID |
| 125 | |
| 126 | #endif |
| 127 | |
| 128 | int qemu_madvise(void *addr, size_t len, int advice); |
| 129 | |
| 130 | int qemu_create_pidfile(const char *filename); |
| 131 | int qemu_get_thread_id(void); |
| 132 | |
| 133 | #ifdef _WIN32 |
| 134 | static inline void qemu_timersub(const struct timeval *val1, |
| 135 | const struct timeval *val2, |
| 136 | struct timeval *res) |
| 137 | { |
| 138 | res->tv_sec = val1->tv_sec - val2->tv_sec; |
| 139 | if (val1->tv_usec < val2->tv_usec) { |
| 140 | res->tv_sec--; |
| 141 | res->tv_usec = val1->tv_usec - val2->tv_usec + 1000 * 1000; |
| 142 | } else { |
| 143 | res->tv_usec = val1->tv_usec - val2->tv_usec; |
| 144 | } |
| 145 | } |
| 146 | #else |
| 147 | #define qemu_timersub timersub |
| 148 | #define ffs __builtin_ffs |
| 149 | #endif |
| 150 | |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 151 | #endif |