[uclibc-ng-devel] [PATCH] xtensa: Add time64 support.

[Dmitry Chestnykh]

- xtensa is the second architecture that supports
time64 inside uClibc-ng.
- Linux Kernel always uses 32bit time variables
inside `stat` structures, so there is a need
to use `st_atime`, `st_mtime` and `st_ctime` structures with the same
32bit-wide `tv_sec` and `tv_nsec` variables even if time64 is enabled.

Signed-off-by: Dmitry Chestnykh <dm.chestn...@gmail.com>
---
 extra/Configs/Config.in                      |  2 +-
 libc/sysdeps/linux/xtensa/bits/kernel_stat.h | 22 ++++++++++++++++++++
 2 files changed, 23 insertions(+), 1 deletion(-)

diff --git a/extra/Configs/Config.in b/extra/Configs/Config.in
index 831b9f689..9351dffc8 100644
--- a/extra/Configs/Config.in
+++ b/extra/Configs/Config.in
@@ -1026,7 +1026,7 @@ config UCLIBC_FALLBACK_TO_ETC_LOCALTIME
 
 config UCLIBC_USE_TIME64
        bool "Use *time64 syscalls instead of 32bit ones (if possible)"
-       depends on TARGET_arm
+       depends on TARGET_arm || TARGET_xtensa
        # TODO: add support for other architectures
        default n
 
diff --git a/libc/sysdeps/linux/xtensa/bits/kernel_stat.h 
b/libc/sysdeps/linux/xtensa/bits/kernel_stat.h
index d884344d3..80ccdb76a 100644
--- a/libc/sysdeps/linux/xtensa/bits/kernel_stat.h
+++ b/libc/sysdeps/linux/xtensa/bits/kernel_stat.h
@@ -5,6 +5,16 @@
  * struct kernel_stat should look like...  It turns out each arch has a
  * different opinion on the subject... */
 
+#if defined(__UCLIBC_USE_TIME64__)
+#include <bits/types.h>
+
+struct ts32_struct {
+       __S32_TYPE tv_sec;
+       __S32_TYPE tv_nsec;
+};
+
+#endif
+
 struct kernel_stat {
        unsigned long   st_dev;
        unsigned long   st_ino;
@@ -16,9 +26,15 @@ struct kernel_stat {
        long            st_size;
        unsigned long   st_blksize;
        unsigned long   st_blocks;
+#if defined(__UCLIBC_USE_TIME64__)
+       struct ts32_struct __st_atim32;
+       struct ts32_struct __st_mtim32;
+       struct ts32_struct __st_ctim32;
+#else
        struct timespec st_atim;
        struct timespec st_mtim;
        struct timespec st_ctim;
+#endif
        unsigned long   __unused4;
        unsigned long   __unused5;
 };
@@ -35,9 +51,15 @@ struct kernel_stat64 {
        unsigned long st_blksize;       /* Optimal block size for I/O. */
        unsigned long __uclibc_unused2;
        unsigned long long st_blocks;   /* Number 512-byte blocks allocated. */
+#if defined(__UCLIBC_USE_TIME64__)
+       struct ts32_struct __st_atim32;
+       struct ts32_struct __st_mtim32;
+       struct ts32_struct __st_ctim32;
+#else
        struct timespec st_atim;        /* Time of last access. */
        struct timespec st_mtim;        /* Time of last modification. */
        struct timespec st_ctim;        /* Time of last status change. */
+#endif
        unsigned long __uclibc_unused4;
        unsigned long __uclibc_unused5;
 };
-- 
2.43.2

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