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author | Kito Cheng <kito.cheng@sifive.com> | 2021-04-13 17:33:03 +0800 |
---|---|---|
committer | Ken Brown <kbrown@cornell.edu> | 2021-04-14 10:07:14 -0400 |
commit | 45f246cd720eb0a904f130c4c33db934eecfdd49 (patch) | |
tree | 66052a5b910cf1665aa85fbfcf5f1c81a3ca7cef | |
parent | 496962e41cd4a852541c24cfd96bbc60d81f713f (diff) | |
download | newlib-45f246cd720eb0a904f130c4c33db934eecfdd49.zip newlib-45f246cd720eb0a904f130c4c33db934eecfdd49.tar.gz newlib-45f246cd720eb0a904f130c4c33db934eecfdd49.tar.bz2 |
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.
-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 88b9fdf..1ac8b1a 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 daa14e4..81bea8e 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 } |