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| author | Paul Sokolovsky <pfalcon@users.sourceforge.net> | 2014-04-11 03:44:00 +0300 |
|---|---|---|
| committer | Paul Sokolovsky <pfalcon@users.sourceforge.net> | 2014-04-11 03:58:49 +0300 |
| commit | 2da81fa80c4cd965f05ad237d81d9764322fde20 (patch) | |
| tree | 0970303f401026fba5834531d616d5ecabb6e9aa /py | |
| parent | 6582d64d01c448be4f575f964c549e1ebffe0db0 (diff) | |
| download | micropython-2da81fa80c4cd965f05ad237d81d9764322fde20.tar.gz micropython-2da81fa80c4cd965f05ad237d81d9764322fde20.zip | |
mpconfig.h: Add basic support for target endianness configuration.
A specific target can define either MP_ENDIANNESS_LITTLE or MP_ENDIANNESS_BIG
to 1. Default is MP_ENDIANNESS_LITTLE.
TODO: Autodetect based on compiler predefined macros?
Diffstat (limited to 'py')
| -rw-r--r-- | py/mpconfig.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/py/mpconfig.h b/py/mpconfig.h index b120c4bb4a..2c118b4bba 100644 --- a/py/mpconfig.h +++ b/py/mpconfig.h @@ -169,6 +169,11 @@ typedef double mp_float_t; // machine_int_t value with most significant bit set #define WORD_MSBIT_HIGH (((machine_uint_t)1) << (BYTES_PER_WORD * 8 - 1)) +#if !defined(MP_ENDIANNESS_LITTLE) && !defined(MP_ENDIANNESS_BIG) +// Just because most archs are such? +#define MP_ENDIANNESS_LITTLE (1) +#endif + // printf format spec to use for machine_int_t and friends #ifndef INT_FMT #ifdef __LP64__ |