flipperzero-firmware/lib/lfs_config.h

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#pragma once
#include <furi.h>
#ifdef FURI_NDEBUG
#define LFS_NO_ASSERT
#define LFS_ASSERT(x)
#else
#define LFS_ASSERT furi_assert
#endif
#define LFS_TAG "Lfs"
#ifdef FURI_LFS_DEBUG
#define LFS_TRACE(...) FURI_LOG_T(LFS_TAG, __VA_ARGS__);
#define LFS_DEBUG(...) FURI_LOG_D(LFS_TAG, __VA_ARGS__);
#else
#define LFS_TRACE(...)
#define LFS_DEBUG(...)
#endif // FURI_LFS_DEBUG
#define LFS_WARN(...) FURI_LOG_W(LFS_TAG, __VA_ARGS__);
#define LFS_ERROR(...) FURI_LOG_E(LFS_TAG, __VA_ARGS__);
// Because crc
#undef LFS_CONFIG
// System includes
#include <stdint.h>
#include <stdbool.h>
#include <string.h>
#include <inttypes.h>
#ifndef LFS_NO_MALLOC
#include <stdlib.h>
#endif
#ifndef LFS_NO_ASSERT
#include <assert.h>
#endif
#if !defined(LFS_NO_DEBUG) || !defined(LFS_NO_WARN) || !defined(LFS_NO_ERROR) || \
defined(LFS_YES_TRACE)
#include <stdio.h>
#endif
#ifdef __cplusplus
extern "C" {
#endif
// Builtin functions, these may be replaced by more efficient
// toolchain-specific implementations. LFS_NO_INTRINSICS falls back to a more
// expensive basic C implementation for debugging purposes
// Min/max functions for unsigned 32-bit numbers
static inline uint32_t lfs_max(uint32_t a, uint32_t b) {
return (a > b) ? a : b;
}
static inline uint32_t lfs_min(uint32_t a, uint32_t b) {
return (a < b) ? a : b;
}
// Align to nearest multiple of a size
static inline uint32_t lfs_aligndown(uint32_t a, uint32_t alignment) {
return a - (a % alignment);
}
static inline uint32_t lfs_alignup(uint32_t a, uint32_t alignment) {
return lfs_aligndown(a + alignment - 1, alignment);
}
// Find the smallest power of 2 greater than or equal to a
static inline uint32_t lfs_npw2(uint32_t a) {
#if !defined(LFS_NO_INTRINSICS) && (defined(__GNUC__) || defined(__CC_ARM))
return 32 - __builtin_clz(a - 1);
#else
uint32_t r = 0;
uint32_t s;
a -= 1;
s = (a > 0xffff) << 4;
a >>= s;
r |= s;
s = (a > 0xff) << 3;
a >>= s;
r |= s;
s = (a > 0xf) << 2;
a >>= s;
r |= s;
s = (a > 0x3) << 1;
a >>= s;
r |= s;
return (r | (a >> 1)) + 1;
#endif
}
// Count the number of trailing binary zeros in a
// lfs_ctz(0) may be undefined
static inline uint32_t lfs_ctz(uint32_t a) {
#if !defined(LFS_NO_INTRINSICS) && defined(__GNUC__)
return __builtin_ctz(a);
#else
return lfs_npw2((a & -a) + 1) - 1;
#endif
}
// Count the number of binary ones in a
static inline uint32_t lfs_popc(uint32_t a) {
#if !defined(LFS_NO_INTRINSICS) && (defined(__GNUC__) || defined(__CC_ARM))
return __builtin_popcount(a);
#else
a = a - ((a >> 1) & 0x55555555);
a = (a & 0x33333333) + ((a >> 2) & 0x33333333);
return (((a + (a >> 4)) & 0xf0f0f0f) * 0x1010101) >> 24;
#endif
}
// Find the sequence comparison of a and b, this is the distance
// between a and b ignoring overflow
static inline int lfs_scmp(uint32_t a, uint32_t b) {
return (int)(unsigned)(a - b);
}
// Convert between 32-bit little-endian and native order
static inline uint32_t lfs_fromle32(uint32_t a) {
#if !defined(LFS_NO_INTRINSICS) && \
((defined(BYTE_ORDER) && defined(ORDER_LITTLE_ENDIAN) && \
BYTE_ORDER == ORDER_LITTLE_ENDIAN) || \
(defined(__BYTE_ORDER) && defined(__ORDER_LITTLE_ENDIAN) && \
__BYTE_ORDER == __ORDER_LITTLE_ENDIAN) || \
(defined(__BYTE_ORDER__) && defined(__ORDER_LITTLE_ENDIAN__) && \
__BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__))
return a;
#elif !defined(LFS_NO_INTRINSICS) && \
((defined(BYTE_ORDER) && defined(ORDER_BIG_ENDIAN) && BYTE_ORDER == ORDER_BIG_ENDIAN) || \
(defined(__BYTE_ORDER) && defined(__ORDER_BIG_ENDIAN) && \
__BYTE_ORDER == __ORDER_BIG_ENDIAN) || \
(defined(__BYTE_ORDER__) && defined(__ORDER_BIG_ENDIAN__) && \
__BYTE_ORDER__ == __ORDER_BIG_ENDIAN__))
return __builtin_bswap32(a);
#else
return (((uint8_t*)&a)[0] << 0) | (((uint8_t*)&a)[1] << 8) | (((uint8_t*)&a)[2] << 16) |
(((uint8_t*)&a)[3] << 24);
#endif
}
static inline uint32_t lfs_tole32(uint32_t a) {
return lfs_fromle32(a);
}
// Convert between 32-bit big-endian and native order
static inline uint32_t lfs_frombe32(uint32_t a) {
#if !defined(LFS_NO_INTRINSICS) && \
((defined(BYTE_ORDER) && defined(ORDER_LITTLE_ENDIAN) && \
BYTE_ORDER == ORDER_LITTLE_ENDIAN) || \
(defined(__BYTE_ORDER) && defined(__ORDER_LITTLE_ENDIAN) && \
__BYTE_ORDER == __ORDER_LITTLE_ENDIAN) || \
(defined(__BYTE_ORDER__) && defined(__ORDER_LITTLE_ENDIAN__) && \
__BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__))
return __builtin_bswap32(a);
#elif !defined(LFS_NO_INTRINSICS) && \
((defined(BYTE_ORDER) && defined(ORDER_BIG_ENDIAN) && BYTE_ORDER == ORDER_BIG_ENDIAN) || \
(defined(__BYTE_ORDER) && defined(__ORDER_BIG_ENDIAN) && \
__BYTE_ORDER == __ORDER_BIG_ENDIAN) || \
(defined(__BYTE_ORDER__) && defined(__ORDER_BIG_ENDIAN__) && \
__BYTE_ORDER__ == __ORDER_BIG_ENDIAN__))
return a;
#else
return (((uint8_t*)&a)[0] << 24) | (((uint8_t*)&a)[1] << 16) | (((uint8_t*)&a)[2] << 8) |
(((uint8_t*)&a)[3] << 0);
#endif
}
static inline uint32_t lfs_tobe32(uint32_t a) {
return lfs_frombe32(a);
}
// Calculate CRC-32 with polynomial = 0x04c11db7
uint32_t lfs_crc(uint32_t crc, const void* buffer, size_t size);
// Allocate memory, only used if buffers are not provided to littlefs
// Note, memory must be 64-bit aligned
static inline void* lfs_malloc(size_t size) {
#ifndef LFS_NO_MALLOC
return malloc(size);
#else
(void)size;
return NULL;
#endif
}
// Deallocate memory, only used if buffers are not provided to littlefs
static inline void lfs_free(void* p) {
#ifndef LFS_NO_MALLOC
free(p);
#else
(void)p;
#endif
}
#ifdef __cplusplus
} /* extern "C" */
#endif