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Commit a3340842 authored by Alessandro Rubini's avatar Alessandro Rubini
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wr-api.h: avoid a libgcc 64-bit division 

Signed-off-by: Alessandro Rubini's avatarAlessandro Rubini <rubini@gnudd.com>
parent e31d29b6
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Showing with 11 additions and 2 deletions
proto-ext-whiterabbit/wr-api.h
View file @ a3340842
...@@ -6,6 +6,7 @@ ...@@ -6,6 +6,7 @@
#ifndef __WREXT_WR_API_H__ #ifndef __WREXT_WR_API_H__
#define __WREXT_WR_API_H__ #define __WREXT_WR_API_H__
#include <ppsi/lib.h>
#include "wr-constants.h" #include "wr-constants.h"
/* /*
...@@ -50,10 +51,18 @@ static inline struct wr_dsport *WR_DSPOR(struct pp_instance *ppi) ...@@ -50,10 +51,18 @@ static inline struct wr_dsport *WR_DSPOR(struct pp_instance *ppi)
static inline Integer32 phase_to_cf_units(Integer32 phase) static inline Integer32 phase_to_cf_units(Integer32 phase)
{ {
return (Integer32) ((int64_t)phase * 65536LL / 1000LL); uint64_t ph64;
if (phase >= 0) {
ph64 = phase * 65536LL;
__div64_32(&ph64, 1000);
return ph64;
} else {
ph64 = -phase * 65536LL;
__div64_32(&ph64, 1000);
return -ph64;
}
} }
/* Pack/Unkpack White rabbit message in the suffix of PTP announce message */ /* Pack/Unkpack White rabbit message in the suffix of PTP announce message */
void msg_pack_announce_wr_tlv(struct pp_instance *ppi); void msg_pack_announce_wr_tlv(struct pp_instance *ppi);
void msg_unpack_announce_wr_tlv(void *buf, MsgAnnounce *ann); void msg_unpack_announce_wr_tlv(void *buf, MsgAnnounce *ann);
......
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