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newlib-cygwin/libgloss/riscv/sys_gettimeofday.c
Kuan-Wei Chiu 5f15d7c581 RISC-V: Fix timeval conversion in _gettimeofday()
Replace multiplication with division for microseconds calculation from
nanoseconds in _gettimeofday function.

Signed-off-by: Kuan-Wei Chiu <visitorckw@gmail.com>
2023-11-29 10:14:55 +01:00

32 lines
796 B
C

#include <machine/syscall.h>
#include <sys/time.h>
#include <stdint.h>
#include "internal_syscall.h"
/* Get the current time. Only relatively correct. */
int
_gettimeofday(struct timeval *tp, void *tzp)
{
#if __riscv_xlen == 32
struct __timespec64
{
int64_t tv_sec; /* Seconds */
# if BYTE_ORDER == BIG_ENDIAN
int32_t __padding; /* Padding */
int32_t tv_nsec; /* Nanoseconds */
# else
int32_t tv_nsec; /* Nanoseconds */
int32_t __padding; /* Padding */
# endif
};
struct __timespec64 ts64;
int rv;
rv = syscall_errno (SYS_clock_gettime64, 2, 0, (long)&ts64, 0, 0, 0, 0);
tp->tv_sec = ts64.tv_sec;
tp->tv_usec = ts64.tv_nsec / 1000;
return rv;
#else
return syscall_errno (SYS_gettimeofday, 1, tp, 0, 0, 0, 0, 0);
#endif
}