Introduce time64 support.

This patch introduces *time64 syscalls support for uClibc-ng.
Currently the redirection of syscalls to their *time64
analogs is fully supported for 32bit ARM (ARMv5, ARMv6, ARMv7).
The main changes that take effect when time64 feature is enabled are:
- sizeof(time_t) is 8.
- There is a possibility os setting date beyond year 2038.
- some syscalls are redirected:
clock_adjtime -> clock_adjtime64
clock_getres -> clock_getres_time64
clock_gettime -> clock_gettime64
clock_nanosleep -> clock_nanosleep_time64
clock_settime -> clock_settime64
futex -> futex_time64
mq_timedreceive -> mq_timedreceive_time64
mq_timedsend -> mq_timedsend_time64
ppoll -> ppoll_time64
pselect6 -> pselect6_time64
recvmmsg -> recvmmsg_time64
rt_sigtimedwait -> rt_sigtimedwait_time64
sched_rr_get_interval -> sched_rr_get_interval_time64
semtimedop -> semtimedop_time64
timer_gettime -> timer_gettime64
timer_settime -> timer_settime64
timerfd_gettime -> timerfd_gettime64
timerfd_settime -> timerfd_settime64
utimensat -> utimensat_time64.

- settimeofday uses clock_settime (like in glibc/musl).
- gettimeofday uses clock_gettime (like in glibc/musl).
- nanosleep uses clock_nanosleep (like in glibc/musl).

- There are some fixes in data structures used by libc and kernel
for correct data handling both with and without enabled time64 support.

Signed-off-by: Dmitry Chestnykh <dm.chestnykh@gmail.com>

1 files changed, 49 insertions, 0 deletions

diff --git a/libc/sysdeps/linux/common/bits/syscalls-common.h b/libc/sysdeps/linux/common/bits/syscalls-common.h
index adae45aac..c3b193e6f 100755
--- a/libc/sysdeps/linux/common/bits/syscalls-common.h
+++ b/libc/sysdeps/linux/common/bits/syscalls-common.h
@@ -99,14 +99,40 @@ type name(C_DECL_ARGS_##nargs(args)) {					\
 	return (type)INLINE_SYSCALL(name, nargs, C_ARGS_##nargs(args));	\
 }
 
+#define SYSCALL_FUNC_TIME64(nargs, type, name, args...)			\
+type name(C_DECL_ARGS_##nargs(args)) {					\
+	return (type)INLINE_SYSCALL(name##_time64, nargs, C_ARGS_##nargs(args));	\
+}
+
+#define SYSCALL_FUNC_64(nargs, type, name, args...)			\
+type name(C_DECL_ARGS_##nargs(args)) {					\
+	return (type)INLINE_SYSCALL(name##64, nargs, C_ARGS_##nargs(args));	\
+}
+
+
 #define SYSCALL_NOERR_FUNC(nargs, type, name, args...)			\
 type name(C_DECL_ARGS_##nargs(args)) {					\
 	return (type)INLINE_SYSCALL_NOERR(name, nargs, C_ARGS_##nargs(args));	\
 }
 
+#define SYSCALL_NOERR_FUNC_TIME64(nargs, type, name, args...)			\
+type name(C_DECL_ARGS_##nargs(args)) {					\
+	return (type)INLINE_SYSCALL_NOERR(name##_time64, nargs, C_ARGS_##nargs(args));	\
+}
+
+#define SYSCALL_NOERR_FUNC_64(nargs, type, name, args...)			\
+type name(C_DECL_ARGS_##nargs(args)) {					\
+	return (type)INLINE_SYSCALL_NOERR(name##64, nargs, C_ARGS_##nargs(args));	\
+}
+
 #define SYSCALL_FUNC_BODY(nargs, type, name, args...)			\
 	return (type)INLINE_SYSCALL(name, nargs, C_ARGS_##nargs(args));
 
+#define SYSCALL_FUNC_BODY_TIME64(nargs, type, name, args...)			\
+	return (type)INLINE_SYSCALL(name##_time64, nargs, C_ARGS_##nargs(args));
+
+#define SYSCALL_FUNC_BODY_64(nargs, type, name, args...)			\
+	return (type)INLINE_SYSCALL(name##64, nargs, C_ARGS_##nargs(args));
 
 #define _syscall0(args...)		SYSCALL_FUNC(0, args)
 #define _syscall_noerr0(args...)	SYSCALL_NOERR_FUNC(0, args)
@@ -119,6 +145,29 @@ type name(C_DECL_ARGS_##nargs(args)) {					\
 #define _syscall5(args...)		SYSCALL_FUNC(5, args)
 #define _syscall6(args...)		SYSCALL_FUNC(6, args)
 
+#define _syscall0_time64(args...)		SYSCALL_FUNC_TIME64(0, args)
+#define _syscall_noerr0_time64(args...)	SYSCALL_NOERR_FUNC_TIME64(0, args)
+#define _syscall1_time64(args...)		SYSCALL_FUNC_TIME64(1, args)
+#define _syscall_noerr1_time64(args...)	SYSCALL_NOERR_FUNC_TIME64(1, args)
+#define _syscall2_time64(args...)		SYSCALL_FUNC_TIME64(2, args)
+#define _syscall2_body_time64(args...)		SYSCALL_FUNC_BODY_TIME64(2, args)
+#define _syscall3_time64(args...)		SYSCALL_FUNC_TIME64(3, args)
+#define _syscall4_time64(args...)		SYSCALL_FUNC_TIME64(4, args)
+#define _syscall5_time64(args...)		SYSCALL_FUNC_TIME64(5, args)
+#define _syscall6_time64(args...)		SYSCALL_FUNC_TIME64(6, args)
+
+#define _syscall0_64(args...)		SYSCALL_FUNC_64(0, args)
+#define _syscall_noerr0_64(args...)	SYSCALL_NOERR_FUNC_64(0, args)
+#define _syscall1_64(args...)		SYSCALL_FUNC_64(1, args)
+#define _syscall_noerr1_64(args...)	SYSCALL_NOERR_FUNC_64(1, args)
+#define _syscall2_64(args...)		SYSCALL_FUNC_64(2, args)
+#define _syscall2_body_64(args...)		SYSCALL_FUNC_BODY_64(2, args)
+#define _syscall3_64(args...)		SYSCALL_FUNC_64(3, args)
+#define _syscall4_64(args...)		SYSCALL_FUNC_64(4, args)
+#define _syscall5_64(args...)		SYSCALL_FUNC_64(5, args)
+#define _syscall6_64(args...)		SYSCALL_FUNC_64(6, args)
+
+
 #endif /* _syscall0 */
 
 #endif /* __ASSEMBLER__ */