diff options
author | Kito Cheng <kito.cheng@sifive.com> | 2021-04-13 12:33:03 +0300 |
---|---|---|
committer | Corinna Vinschen <corinna@vinschen.de> | 2021-04-13 13:54:49 +0300 |
commit | 20d00819984058e439cfe40818f81d7315c89201 (patch) | |
tree | 9e2ea9e115576cc4cff91b4969001e51e5bf5007 /libgloss/riscv | |
parent | 436e47584ae7aecf0ec22a98384a3348d244471f (diff) |
RISC-V: Using SYS_clock_gettime64 for rv32 libgloss.
- RISC-V 32 bits linux/glibc didn't provide gettimeofday anymore
after upstream, because RV32 didn't have backward compatible issue,
so RV32 only support 64 bits time related system call.
- So using clock_gettime64 call instead for rv32 libgloss.
Diffstat (limited to 'libgloss/riscv')
-rw-r--r-- | libgloss/riscv/machine/syscall.h | 1 | ||||
-rw-r--r-- | libgloss/riscv/sys_gettimeofday.c | 21 |
2 files changed, 22 insertions, 0 deletions
diff --git a/libgloss/riscv/machine/syscall.h b/libgloss/riscv/machine/syscall.h index 88b9fdfda..1ac8b1a4b 100644 --- a/libgloss/riscv/machine/syscall.h +++ b/libgloss/riscv/machine/syscall.h @@ -44,6 +44,7 @@ #define SYS_munmap 215 #define SYS_mremap 216 #define SYS_mmap 222 +#define SYS_clock_gettime64 403 #define SYS_open 1024 #define SYS_link 1025 #define SYS_unlink 1026 diff --git a/libgloss/riscv/sys_gettimeofday.c b/libgloss/riscv/sys_gettimeofday.c index daa14e475..81bea8e55 100644 --- a/libgloss/riscv/sys_gettimeofday.c +++ b/libgloss/riscv/sys_gettimeofday.c @@ -1,10 +1,31 @@ #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 } |