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| author | Andrew Waterman <waterman@eecs.berkeley.edu> | 2013-11-13 14:38:09 -0800 |
|---|---|---|
| committer | Andrew Waterman <waterman@eecs.berkeley.edu> | 2013-11-13 14:38:18 -0800 |
| commit | 6c0a4423c5b05221fc1c23b838316ffa88c0858d (patch) | |
| tree | e4eae49c77ac98ef5db99280d99eeca5cceec995 /pk | |
| parent | 43c14ea417d21968d918447662a1c4722a3887d2 (diff) | |
| download | riscv-pk-6c0a4423c5b05221fc1c23b838316ffa88c0858d.zip riscv-pk-6c0a4423c5b05221fc1c23b838316ffa88c0858d.tar.gz riscv-pk-6c0a4423c5b05221fc1c23b838316ffa88c0858d.tar.bz2 | |
Add gettimeofday syscall
Diffstat (limited to 'pk')
| -rw-r--r-- | pk/syscall.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/pk/syscall.c b/pk/syscall.c index 1297ffa..4180eb2 100644 --- a/pk/syscall.c +++ b/pk/syscall.c @@ -182,6 +182,17 @@ sysret_t sys_time(long* loc) return (sysret_t){t, 0}; } +sysret_t sys_gettimeofday(long* loc) +{ + populate_mapping(loc, 2*sizeof(long), PROT_WRITE); + + uintptr_t t = rdcycle(), hz = 1000000000; + loc[0] = t/hz; + loc[1] = (t % hz) / (hz / 1000000); + + return (sysret_t){0, 0}; +} + sysret_t sys_writev(int fd, const void* iov, int cnt) { long get(int i) { return current.elf64 ? ((long*)iov)[i] : ((int*)iov)[i]; } @@ -224,6 +235,7 @@ sysret_t syscall(long a0, long a1, long a2, long a3, long a4, long a5, long n) [SYS_mremap] = sys_mremap, [SYS_rt_sigaction] = sys_rt_sigaction, [SYS_time] = sys_time, + [SYS_gettimeofday] = sys_gettimeofday, [SYS_writev] = sys_writev, }; |