[v5,03/17] RISC-V: Use 64-bit-time syscall numbers with the 32-bit port
Commit Message
sysdep.h redefines only the syscall where the generic implementation
still does not have actual 64-bit time_t support:
/* Workarounds for generic code needing to handle 64-bit time_t. */
/* Fix sysdeps/unix/sysv/linux/clock_getcpuclockid.c. */
#define __NR_clock_getres __NR_clock_getres_time64
/* Fix sysdeps/nptl/lowlevellock-futex.h. */
#define __NR_futex __NR_futex_time64
[...]
This patch also adds a comment that it is a workaround to handle 64-bit
time_t and on each #define comment for which implementation it intends
to.
---
sysdeps/unix/sysv/linux/riscv/sysdep.h | 23 +++++++++++++++++++++++
1 file changed, 23 insertions(+)
Comments
On Wed, 19 Aug 2020, Alistair Francis via Libc-alpha wrote:
> sysdep.h redefines only the syscall where the generic implementation
> still does not have actual 64-bit time_t support:
>
> /* Workarounds for generic code needing to handle 64-bit time_t. */
>
> /* Fix sysdeps/unix/sysv/linux/clock_getcpuclockid.c. */
> #define __NR_clock_getres __NR_clock_getres_time64
> /* Fix sysdeps/nptl/lowlevellock-futex.h. */
> #define __NR_futex __NR_futex_time64
> [...]
>
> This patch also adds a comment that it is a workaround to handle 64-bit
> time_t and on each #define comment for which implementation it intends
> to.
LGTM.
Reviewed-by: Maciej W. Rozycki <macro@wdc.com>
Maciej
@@ -25,6 +25,29 @@
#undef SYS_ify
#define SYS_ify(syscall_name) __NR_##syscall_name
+#if __WORDSIZE == 32
+
+/* Workarounds for generic code needing to handle 64-bit time_t. */
+
+/* Fix sysdeps/unix/sysv/linux/clock_getcpuclockid.c. */
+#define __NR_clock_getres __NR_clock_getres_time64
+/* Fix sysdeps/nptl/lowlevellock-futex.h. */
+#define __NR_futex __NR_futex_time64
+/* Fix sysdeps/unix/sysv/linux/pause.c. */
+#define __NR_ppoll __NR_ppoll_time64
+/* Fix sysdeps/unix/sysv/linux/select.c. */
+#define __NR_pselect6 __NR_pselect6_time64
+/* Fix sysdeps/unix/sysv/linux/recvmmsg.c. */
+#define __NR_recvmmsg __NR_recvmmsg_time64
+/* Fix sysdeps/unix/sysv/linux/sigtimedwait.c. */
+#define __NR_rt_sigtimedwait __NR_rt_sigtimedwait_time64
+/* Fix sysdeps/unix/sysv/linux/semtimedop.c. */
+#define __NR_semtimedop __NR_semtimedop_time64
+/* Hack sysdeps/unix/sysv/linux/generic/utimes.c. */
+#define __NR_utimensat __NR_utimensat_time64
+
+#endif /* __WORDSIZE == 32 */
+
#ifdef __ASSEMBLER__
# include <sys/asm.h>