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py/mpconfig: Introduce reusable MP_HTOBE32(), etc. macros.

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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.
This commit is contained in:
Paul Sokolovsky
2017-11-08 19:45:18 +02:00
parent 5b1b80a8db
commit 1b146e9de9
2 changed files with 22 additions and 3 deletions
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5
ports/esp8266/posix_helpers.c
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@@ -55,14 +55,13 @@ void *realloc(void *ptr, size_t size) {
return p;
}
#define PLATFORM_HTONL(_n) ((uint32_t)( (((_n) & 0xff) << 24) | (((_n) & 0xff00) << 8) | (((_n) >> 8) & 0xff00) | (((_n) >> 24) & 0xff) ))
#undef htonl
#undef ntohl
uint32_t ntohl(uint32_t netlong) {
return PLATFORM_HTONL(netlong);
return MP_BE32TOH(netlong);
}
uint32_t htonl(uint32_t netlong) {
return PLATFORM_HTONL(netlong);
return MP_HTOBE32(netlong);
}
time_t time(time_t *t) {