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cpu/esp32: add missing POSIX functions

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This commit is contained in:
Gunar Schorcht 2022-01-20 19:11:40 +01:00
parent 1d20f88bb0
commit 2ccfb145a1
1 changed files with 53 additions and 0 deletions
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53
cpu/esp32/syscalls.c
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@ -18,8 +18,12 @@
* @}
*/
#include <stdlib.h>
#include <sys/lock.h>
#include <sys/unistd.h>
#include <sys/time.h>
#include "div.h"
#include "esp/common_macros.h"
#include "irq_arch.h"
#include "periph_cpu.h"
@ -90,6 +94,55 @@ void _exit_r(struct _reent *r, int status)
_exit(status);
}
#if !IS_USED(MODULE_VFS)
int _fcntl_r(struct _reent *r, int fd, int cmd, int arg)
__attribute__((weak,alias("_no_sys_func")));
#endif
#ifndef CLOCK_REALTIME
#define CLOCK_REALTIME (clockid_t)1
#endif
#ifndef CLOCK_MONOTONIC
#define CLOCK_MONOTONIC (clockid_t)4
#endif
int clock_gettime_r(struct _reent *r, clockid_t clock_id, struct timespec *tp)
{
if (tp == NULL) {
r->_errno = EINVAL;
return -1;
}
struct timeval tv;
uint64_t now = 0;
switch (clock_id) {
case CLOCK_REALTIME:
if (_gettimeofday_r(r, &tv, NULL)) {
return -1;
}
tp->tv_sec = tv.tv_sec;
tp->tv_nsec = tv.tv_usec * NS_PER_US;
break;
case CLOCK_MONOTONIC:
now = system_get_time_64();
tp->tv_sec = div_u64_by_1000000(now);
tp->tv_nsec = (now - (tp->tv_sec * US_PER_SEC)) * NS_PER_US;
break;
default:
r->_errno = EINVAL;
return -1;
}
return 0;
}
int clock_gettime(clockid_t clock_id, struct timespec *tp)
{
return clock_gettime_r(_GLOBAL_REENT, clock_id, tp);
}
static int _no_sys_func(struct _reent *r)
{
DEBUG("%s: system function does not exist\n", __func__);