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17 #define LFS_STRINGIZE(x) LFS_STRINGIZE2(x)
18 #define LFS_STRINGIZE2(x) #x
19 #include LFS_STRINGIZE(LFS_CONFIG)
34 #if !defined(LFS_NO_DEBUG) || \
35 !defined(LFS_NO_WARN) || \
36 !defined(LFS_NO_ERROR) || \
37 defined(LFS_YES_TRACE)
54 #define LFS_TRACE_(fmt, ...) \
55 printf("%s:%d:trace: " fmt "%s\n", __FILE__, __LINE__, __VA_ARGS__)
56 #define LFS_TRACE(...) LFS_TRACE_(__VA_ARGS__, "")
58 #define LFS_TRACE(...)
64 #define LFS_DEBUG_(fmt, ...) \
65 printf("%s:%d:debug: " fmt "%s\n", __FILE__, __LINE__, __VA_ARGS__)
66 #define LFS_DEBUG(...) LFS_DEBUG_(__VA_ARGS__, "")
68 #define LFS_DEBUG(...)
74 #define LFS_WARN_(fmt, ...) \
75 printf("%s:%d:warn: " fmt "%s\n", __FILE__, __LINE__, __VA_ARGS__)
76 #define LFS_WARN(...) LFS_WARN_(__VA_ARGS__, "")
84 #define LFS_ERROR_(fmt, ...) \
85 printf("%s:%d:error: " fmt "%s\n", __FILE__, __LINE__, __VA_ARGS__)
86 #define LFS_ERROR(...) LFS_ERROR_(__VA_ARGS__, "")
88 #define LFS_ERROR(...)
95 #define LFS_ASSERT(test) assert(test)
97 #define LFS_ASSERT(test)
107 static inline uint32_t
lfs_max(uint32_t a, uint32_t b) {
108 return (a > b) ? a : b;
111 static inline uint32_t
lfs_min(uint32_t a, uint32_t b) {
112 return (a < b) ? a : b;
117 return a - (a % alignment);
120 static inline uint32_t
lfs_alignup(uint32_t a, uint32_t alignment) {
126 #if !defined(LFS_NO_INTRINSICS) && (defined(__GNUC__) || defined(__CC_ARM))
127 return 32 - __builtin_clz(a-1);
132 s = (a > 0xffff) << 4; a >>= s; r |= s;
133 s = (a > 0xff ) << 3; a >>= s; r |= s;
134 s = (a > 0xf ) << 2; a >>= s; r |= s;
135 s = (a > 0x3 ) << 1; a >>= s; r |= s;
136 return (r | (a >> 1)) + 1;
143 #if !defined(LFS_NO_INTRINSICS) && defined(__GNUC__)
144 return __builtin_ctz(a);
152 #if !defined(LFS_NO_INTRINSICS) && (defined(__GNUC__) || defined(__CC_ARM))
153 return __builtin_popcount(a);
155 a = a - ((a >> 1) & 0x55555555);
156 a = (a & 0x33333333) + ((a >> 2) & 0x33333333);
157 return (((a + (a >> 4)) & 0xf0f0f0f) * 0x1010101) >> 24;
163 static inline int lfs_scmp(uint32_t a, uint32_t b) {
164 return (
int)(unsigned)(a - b);
169 #if !defined(LFS_NO_INTRINSICS) && ( \
170 (defined( BYTE_ORDER ) && defined( ORDER_LITTLE_ENDIAN ) && BYTE_ORDER == ORDER_LITTLE_ENDIAN ) || \
171 (defined(__BYTE_ORDER ) && defined(__ORDER_LITTLE_ENDIAN ) && __BYTE_ORDER == __ORDER_LITTLE_ENDIAN ) || \
172 (defined(__BYTE_ORDER__) && defined(__ORDER_LITTLE_ENDIAN__) && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__))
174 #elif !defined(LFS_NO_INTRINSICS) && ( \
175 (defined( BYTE_ORDER ) && defined( ORDER_BIG_ENDIAN ) && BYTE_ORDER == ORDER_BIG_ENDIAN ) || \
176 (defined(__BYTE_ORDER ) && defined(__ORDER_BIG_ENDIAN ) && __BYTE_ORDER == __ORDER_BIG_ENDIAN ) || \
177 (defined(__BYTE_ORDER__) && defined(__ORDER_BIG_ENDIAN__) && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__))
178 return __builtin_bswap32(a);
180 return (((uint8_t*)&a)[0] << 0) |
181 (((uint8_t*)&a)[1] << 8) |
182 (((uint8_t*)&a)[2] << 16) |
183 (((uint8_t*)&a)[3] << 24);
193 #if !defined(LFS_NO_INTRINSICS) && ( \
194 (defined( BYTE_ORDER ) && defined( ORDER_LITTLE_ENDIAN ) && BYTE_ORDER == ORDER_LITTLE_ENDIAN ) || \
195 (defined(__BYTE_ORDER ) && defined(__ORDER_LITTLE_ENDIAN ) && __BYTE_ORDER == __ORDER_LITTLE_ENDIAN ) || \
196 (defined(__BYTE_ORDER__) && defined(__ORDER_LITTLE_ENDIAN__) && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__))
197 return __builtin_bswap32(a);
198 #elif !defined(LFS_NO_INTRINSICS) && ( \
199 (defined( BYTE_ORDER ) && defined( ORDER_BIG_ENDIAN ) && BYTE_ORDER == ORDER_BIG_ENDIAN ) || \
200 (defined(__BYTE_ORDER ) && defined(__ORDER_BIG_ENDIAN ) && __BYTE_ORDER == __ORDER_BIG_ENDIAN ) || \
201 (defined(__BYTE_ORDER__) && defined(__ORDER_BIG_ENDIAN__) && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__))
204 return (((uint8_t*)&a)[0] << 24) |
205 (((uint8_t*)&a)[1] << 16) |
206 (((uint8_t*)&a)[2] << 8) |
207 (((uint8_t*)&a)[3] << 0);
216 uint32_t
lfs_crc(uint32_t crc,
const void *buffer,
size_t size);
221 #ifndef LFS_NO_MALLOC
231 #ifndef LFS_NO_MALLOC
static uint32_t lfs_alignup(uint32_t a, uint32_t alignment)
Definition: lfs_util.h:120
static uint32_t lfs_popc(uint32_t a)
Definition: lfs_util.h:151
static uint32_t lfs_max(uint32_t a, uint32_t b)
Definition: lfs_util.h:107
static void * lfs_malloc(size_t size)
Definition: lfs_util.h:220
static uint32_t lfs_tobe32(uint32_t a)
Definition: lfs_util.h:211
static uint32_t lfs_tole32(uint32_t a)
Definition: lfs_util.h:187
static int lfs_scmp(uint32_t a, uint32_t b)
Definition: lfs_util.h:163
static uint32_t lfs_fromle32(uint32_t a)
Definition: lfs_util.h:168
static void lfs_free(void *p)
Definition: lfs_util.h:230
static uint32_t lfs_min(uint32_t a, uint32_t b)
Definition: lfs_util.h:111
static uint32_t lfs_ctz(uint32_t a)
Definition: lfs_util.h:142
static uint32_t lfs_aligndown(uint32_t a, uint32_t alignment)
Definition: lfs_util.h:116
static uint32_t lfs_frombe32(uint32_t a)
Definition: lfs_util.h:192
uint32_t lfs_crc(uint32_t crc, const void *buffer, size_t size)
Definition: lfs_util.c:14
static uint32_t lfs_npw2(uint32_t a)
Definition: lfs_util.h:125