diff options
Diffstat (limited to 'src/common/tusb_common.h')
| -rw-r--r-- | src/common/tusb_common.h | 66 |
1 files changed, 42 insertions, 24 deletions
diff --git a/src/common/tusb_common.h b/src/common/tusb_common.h index 2b095e238..04149da71 100644 --- a/src/common/tusb_common.h +++ b/src/common/tusb_common.h @@ -24,8 +24,8 @@ * This file is part of the TinyUSB stack. */ -#ifndef _TUSB_COMMON_H_ -#define _TUSB_COMMON_H_ +#ifndef TUSB_COMMON_H_ +#define TUSB_COMMON_H_ #ifdef __cplusplus extern "C" { @@ -34,30 +34,31 @@ //--------------------------------------------------------------------+ // Macros Helper //--------------------------------------------------------------------+ -#define TU_ARRAY_SIZE(_arr) ( sizeof(_arr) / sizeof(_arr[0]) ) +#define TU_ARRAY_SIZE(_arr) ( sizeof(_arr) / sizeof(_arr[0]) ) #define TU_FIELD_SIZE(_type, _field) (sizeof(((_type *)0)->_field)) -#define TU_MIN(_x, _y) ( ( (_x) < (_y) ) ? (_x) : (_y) ) -#define TU_MAX(_x, _y) ( ( (_x) > (_y) ) ? (_x) : (_y) ) -#define TU_DIV_CEIL(n, d) (((n) + (d) - 1) / (d)) +#define TU_MIN(_x, _y) ( ( (_x) < (_y) ) ? (_x) : (_y) ) +#define TU_MAX(_x, _y) ( ( (_x) > (_y) ) ? (_x) : (_y) ) +#define TU_DIV_CEIL(n, d) (((n) + (d) - 1) / (d)) +#define TU_DIV_ROUND_NEAREST(v, d) (((v) + (d)/2) / (d) ) // round to nearest integer -#define TU_U16(_high, _low) ((uint16_t) (((_high) << 8) | (_low))) -#define TU_U16_HIGH(_u16) ((uint8_t) (((_u16) >> 8) & 0x00ff)) -#define TU_U16_LOW(_u16) ((uint8_t) ((_u16) & 0x00ff)) -#define U16_TO_U8S_BE(_u16) TU_U16_HIGH(_u16), TU_U16_LOW(_u16) -#define U16_TO_U8S_LE(_u16) TU_U16_LOW(_u16), TU_U16_HIGH(_u16) +#define TU_U16(_high, _low) ((uint16_t) (((_high) << 8) | (_low))) +#define TU_U16_HIGH(_u16) ((uint8_t) (((_u16) >> 8) & 0x00ff)) +#define TU_U16_LOW(_u16) ((uint8_t) ((_u16) & 0x00ff)) +#define U16_TO_U8S_BE(_u16) TU_U16_HIGH(_u16), TU_U16_LOW(_u16) +#define U16_TO_U8S_LE(_u16) TU_U16_LOW(_u16), TU_U16_HIGH(_u16) -#define TU_U32_BYTE3(_u32) ((uint8_t) ((((uint32_t) _u32) >> 24) & 0x000000ff)) // MSB -#define TU_U32_BYTE2(_u32) ((uint8_t) ((((uint32_t) _u32) >> 16) & 0x000000ff)) -#define TU_U32_BYTE1(_u32) ((uint8_t) ((((uint32_t) _u32) >> 8) & 0x000000ff)) -#define TU_U32_BYTE0(_u32) ((uint8_t) (((uint32_t) _u32) & 0x000000ff)) // LSB +#define TU_U32_BYTE3(_u32) ((uint8_t) ((((uint32_t) _u32) >> 24) & 0x000000ff)) // MSB +#define TU_U32_BYTE2(_u32) ((uint8_t) ((((uint32_t) _u32) >> 16) & 0x000000ff)) +#define TU_U32_BYTE1(_u32) ((uint8_t) ((((uint32_t) _u32) >> 8) & 0x000000ff)) +#define TU_U32_BYTE0(_u32) ((uint8_t) (((uint32_t) _u32) & 0x000000ff)) // LSB -#define U32_TO_U8S_BE(_u32) TU_U32_BYTE3(_u32), TU_U32_BYTE2(_u32), TU_U32_BYTE1(_u32), TU_U32_BYTE0(_u32) -#define U32_TO_U8S_LE(_u32) TU_U32_BYTE0(_u32), TU_U32_BYTE1(_u32), TU_U32_BYTE2(_u32), TU_U32_BYTE3(_u32) +#define U32_TO_U8S_BE(_u32) TU_U32_BYTE3(_u32), TU_U32_BYTE2(_u32), TU_U32_BYTE1(_u32), TU_U32_BYTE0(_u32) +#define U32_TO_U8S_LE(_u32) TU_U32_BYTE0(_u32), TU_U32_BYTE1(_u32), TU_U32_BYTE2(_u32), TU_U32_BYTE3(_u32) -#define TU_BIT(n) (1UL << (n)) +#define TU_BIT(n) (1UL << (n)) // Generate a mask with bit from high (31) to low (0) set, e.g TU_GENMASK(3, 0) = 0b1111 -#define TU_GENMASK(h, l) ( (UINT32_MAX << (l)) & (UINT32_MAX >> (31 - (h))) ) +#define TU_GENMASK(h, l) ( (UINT32_MAX << (l)) & (UINT32_MAX >> (31 - (h))) ) //--------------------------------------------------------------------+ // Includes @@ -109,20 +110,35 @@ extern void* tusb_app_phys_to_virt(void *phys_addr); // This is a backport of memset_s from c11 TU_ATTR_ALWAYS_INLINE static inline int tu_memset_s(void *dest, size_t destsz, int ch, size_t count) { - // TODO may check if desst and src is not NULL - if ( count > destsz ) { + // Validate parameters + if (dest == NULL) { return -1; } + + if (count > destsz) { + return -1; + } + memset(dest, ch, count); return 0; } // This is a backport of memcpy_s from c11 TU_ATTR_ALWAYS_INLINE static inline int tu_memcpy_s(void *dest, size_t destsz, const void *src, size_t count) { - // TODO may check if desst and src is not NULL - if ( count > destsz ) { + // Validate parameters + if (dest == NULL) { + return -1; + } + + // For memcpy, src may be NULL only if count == 0. Reject otherwise. + if (src == NULL && count != 0u) { + return -1; + } + + if (count > destsz) { return -1; } + memcpy(dest, src, count); return 0; } @@ -200,6 +216,8 @@ TU_ATTR_ALWAYS_INLINE static inline bool tu_is_aligned64(uint64_t value) { retur //------------- Mathematics -------------// TU_ATTR_ALWAYS_INLINE static inline uint32_t tu_div_ceil(uint32_t v, uint32_t d) { return TU_DIV_CEIL(v, d); } +TU_ATTR_ALWAYS_INLINE static inline uint32_t tu_div_round_nearest(uint32_t v, uint32_t d) { return TU_DIV_ROUND_NEAREST(v, d); } + TU_ATTR_ALWAYS_INLINE static inline uint32_t tu_round_up(uint32_t v, uint32_t f) { return tu_div_ceil(v, f) * f; } // log2 of a value is its MSB's position @@ -373,4 +391,4 @@ uint8_t const * tu_desc_find3(uint8_t const* desc, uint8_t const* end, uint8_t b } #endif -#endif /* _TUSB_COMMON_H_ */ +#endif /* TUSB_COMMON_H_ */ |