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| author | Paul Sokolovsky <pfalcon@users.sourceforge.net> | 2017-11-08 19:45:18 +0200 |
|---|---|---|
| committer | Paul Sokolovsky <pfalcon@users.sourceforge.net> | 2017-11-08 19:47:37 +0200 |
| commit | 1b146e9de97708b70c3ad96022886e2ce44d246d (patch) | |
| tree | 1f3c8505318a0686c122a2d5611e5ae00833c0f9 /py | |
| parent | 5b1b80a8dbceb9be67dfd894cdf2a49a7426fd68 (diff) | |
| download | micropython-1b146e9de97708b70c3ad96022886e2ce44d246d.tar.gz micropython-1b146e9de97708b70c3ad96022886e2ce44d246d.zip | |
py/mpconfig: Introduce reusable MP_HTOBE32(), etc. macros.
Macros to convert big-endian values to host byte order and vice-versa.
These were defined in adhoc way for some ports (e.g. esp8266), allow
reuse, provide default implementations, while allow ports to override.
Diffstat (limited to 'py')
| -rw-r--r-- | py/mpconfig.h | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/py/mpconfig.h b/py/mpconfig.h index 6a32ea2a6f..fa1094bfc3 100644 --- a/py/mpconfig.h +++ b/py/mpconfig.h @@ -1293,4 +1293,24 @@ typedef double mp_float_t; #define MP_UNLIKELY(x) __builtin_expect((x), 0) #endif +#ifndef MP_HTOBE16 +#if MP_ENDIANNESS_LITTLE +# define MP_HTOBE16(x) ((uint16_t)( (((x) & 0xff) << 8) | (((x) >> 8) & 0xff) )) +# define MP_BE16TOH(x) MP_HTOBE16(x) +#else +# define MP_HTOBE16(x) (x) +# define MP_BE16TOH(x) (x) +#endif +#endif + +#ifndef MP_HTOBE32 +#if MP_ENDIANNESS_LITTLE +# define MP_HTOBE32(x) ((uint32_t)( (((x) & 0xff) << 24) | (((x) & 0xff00) << 8) | (((x) >> 8) & 0xff00) | (((x) >> 24) & 0xff) )) +# define MP_BE32TOH(x) MP_HTOBE32(x) +#else +# define MP_HTOBE32(x) (x) +# define MP_BE32TOH(x) (x) +#endif +#endif + #endif // MICROPY_INCLUDED_PY_MPCONFIG_H |