From 8677b81966edaa9316e021cbfde950af95701f9c Mon Sep 17 00:00:00 2001 From: Jeff Johnston Date: Mon, 4 Dec 2000 18:40:53 +0000 Subject: [PATCH] 2000-12-04 Joel Sherrill * libc/include/sys/time.h: Added BSD timer manipulation macros used by RTEMS code. --- newlib/ChangeLog | 5 +++++ newlib/libc/include/sys/time.h | 32 ++++++++++++++++++++++++++++++++ 2 files changed, 37 insertions(+) diff --git a/newlib/ChangeLog b/newlib/ChangeLog index 2a4057261..f5ffe446a 100644 --- a/newlib/ChangeLog +++ b/newlib/ChangeLog @@ -1,3 +1,8 @@ +2000-12-04 Joel Sherrill + + * libc/include/sys/time.h: Added BSD timer manipulation macros + used by RTEMS code. + 2000-12-04 Joel Sherrill * libc/sys/rtems/crt0.c: Add stubs for functions implicitly diff --git a/newlib/libc/include/sys/time.h b/newlib/libc/include/sys/time.h index ff0963676..881998382 100644 --- a/newlib/libc/include/sys/time.h +++ b/newlib/libc/include/sys/time.h @@ -38,6 +38,38 @@ struct itimerval { struct timeval it_value; }; +/* BSD time macros used by RTEMS code */ +#if defined(__rtems__) + +/* Convenience macros for operations on timevals. + NOTE: `timercmp' does not work for >= or <=. */ +#define timerisset(tvp) ((tvp)->tv_sec || (tvp)->tv_usec) +#define timerclear(tvp) ((tvp)->tv_sec = (tvp)->tv_usec = 0) +#define timercmp(a, b, CMP) \ + (((a)->tv_sec == (b)->tv_sec) ? \ + ((a)->tv_usec CMP (b)->tv_usec) : \ + ((a)->tv_sec CMP (b)->tv_sec)) +#define timeradd(a, b, result) \ + do { \ + (result)->tv_sec = (a)->tv_sec + (b)->tv_sec; \ + (result)->tv_usec = (a)->tv_usec + (b)->tv_usec; \ + if ((result)->tv_usec >= 1000000) \ + { \ + ++(result)->tv_sec; \ + (result)->tv_usec -= 1000000; \ + } \ + } while (0) +#define timersub(a, b, result) \ + do { \ + (result)->tv_sec = (a)->tv_sec - (b)->tv_sec; \ + (result)->tv_usec = (a)->tv_usec - (b)->tv_usec; \ + if ((result)->tv_usec < 0) { \ + --(result)->tv_sec; \ + (result)->tv_usec += 1000000; \ + } \ + } while (0) +#endif + int _EXFUN(gettimeofday, (struct timeval *__p, struct timezone *__z)); int _EXFUN(settimeofday, (const struct timeval *, const struct timezone *)); int _EXFUN(utimes, (const char *__path, struct timeval *__tvp));