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TI compiler quirks, and le byte swapping functions.

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This commit is contained in:
Nathan Conrad
2019-09-13 20:28:26 -04:00
parent fd4be23900
commit a0b6b8187c
1 changed files with 74 additions and 11 deletions
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85
src/common/tusb_compiler.h
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@@ -53,6 +53,9 @@
// for declaration of reserved field, make use of _TU_COUNTER_
#define TU_RESERVED TU_XSTRCAT(reserved, _TU_COUNTER_)
#define TU_LITTLE_ENDIAN (0x12u)
#define TU_BIG_ENDIAN (0x21u)
//--------------------------------------------------------------------+
// Compiler porting with Attribute and Endian
//--------------------------------------------------------------------+
@@ -67,20 +70,80 @@
// Endian conversion use well-known host to network (big endian) naming
#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
#define tu_htonl(u32) __builtin_bswap32(u32)
#define tu_ntohl(u32) __builtin_bswap32(u32)
#define tu_htons(u16) __builtin_bswap16(u16)
#define tu_ntohs(u16) __builtin_bswap16(u16)
#define TU_BYTE_ORDER TU_LITTLE_ENDIAN
#else
#define tu_htonl(u32) (u32)
#define tu_ntohl(u32) (u32)
#define tu_htons(u16) (u16)
#define tu_ntohs(u16) (u16)
#define TU_BYTE_ORDER TU_BIG_ENDIAN
#endif
static inline uint16_t tu_bswap16(uint16_t u16)
{
return __builtin_bswap16(u16);
}
static inline uint16_t tu_bswap32(uint16_t u32)
{
return __builtin_bswap32(u32);
}
#define TU_BSWAP16
#elif defined(__TI_COMPILER_VERSION__)
#define TU_ATTR_ALIGNED(Bytes) __attribute__ ((aligned(Bytes)))
#define TU_ATTR_SECTION(sec_name) __attribute__ ((section(#sec_name)))
#define TU_ATTR_PACKED __attribute__ ((packed))
#define TU_ATTR_PREPACKED
#define TU_ATTR_WEAK __attribute__ ((weak))
#define TU_ATTR_DEPRECATED(mess) __attribute__ ((deprecated(mess))) // warn if function with this attribute is used
#define TU_ATTR_UNUSED __attribute__ ((unused)) // Function/Variable is meant to be possibly unused
// __BYTE_ORDER is defined in the TI ARM compiler, but not MSP430 (which is little endian)
#if ((__BYTE_ORDER__) == (__ORDER_LITTLE_ENDIAN__)) || defined(__MSP430__)
#define TU_BYTE_ORDER TU_LITTLE_ENDIAN
#else
#define TU_BYTE_ORDER TU_BIG_ENDIAN
#endif
static inline uint16_t tu_bswap16(uint16_t u16)
{
return __builtin_bswap16(u16);
}
static inline uint16_t tu_bswap32(uint16_t u32)
{
return __builtin_bswap32(u32);
}
#else
#error "Compiler attribute porting are required"
#error "Compiler attribute porting is required"
#endif
#if (TU_BYTE_ORDER == TU_LITTLE_ENDIAN)
#define tu_htonl(u32) tu_bswap32(u32)
#define tu_ntohl(u32) tu_bswap32(u32)
#define tu_htons(u16) tu_bswap16(u16)
#define tu_ntohs(u16) tu_bswap16(u16)
#define tu_htole16(x) (x)
#define tu_le16toh(x) (x)
#define tu_htole32(x) (x)
#define tu_le32toh(x) (x)
#elif (TU_BYTE_ORDER == TU_BIG_ENDIAN)
#define tu_htonl(u32) (x)
#define tu_ntohl(u32) (x)
#define tu_htons(u16) (x)
#define tu_ntohs(u16) (x)
#define tu_htole16(x) tu_bswap16(u32)
#define tu_le16toh(x) tu_bswap16(u32)
#define tu_htole32(x) tu_bswap32(u32)
#define tu_le32toh(x) tu_bswap32(u32)
#else
#error Byte order is undefined
#endif
#endif /* _TUSB_COMPILER_H_ */