sync_file_range: fix standard UCLIBC_SYSCALL_ALIGN_64BIT handling

Currently UCLIBC_SYSCALL_ALIGN_64BIT is not explicitly handled. Fix that
and make sure the special handling is done for powerpc/xtensa which use
UCLIBC_SYSCALL_ALIGN_64BIT but don't use hole punched syscall handler in
kernel.

Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
Cc: Baruch Siach <baruch@tkos.co.il>
Cc: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>

diff --git a/libc/sysdeps/linux/common/sync_file_range.c b/libc/sysdeps/linux/common/sync_file_range.c
index 6cd7e94..db797de 100644 (file)
--- a/libc/sysdeps/linux/common/sync_file_range.c
+++ b/libc/sysdeps/linux/common/sync_file_range.c
@@ -24,7 +24,11 @@ static int __NC(sync_file_range)(int fd, off64_t offset, off64_t nbytes, unsigne
 {
 #  if defined __powerpc__ && __WORDSIZE == 64
        return INLINE_SYSCALL(sync_file_range, 4, fd, flags, offset, nbytes);
-#  elif defined __mips__ && _MIPS_SIM == _ABIO32
+#  elif (defined __mips__ && _MIPS_SIM == _ABIO32) || \
+       (defined(__UCLIBC_SYSCALL_ALIGN_64BIT__) && !(defined(__powerpc__) || defined(__xtensa__)))
+       /* arch with 64-bit data in even reg alignment #2: [arcv2/others-in-future]
+        * stock syscall handler in kernel (reg hole punched)
+        * see libc/sysdeps/linux/common/posix_fadvise.c for more details */
        return INLINE_SYSCALL(sync_file_range, 7, fd, 0,
                        OFF64_HI_LO(offset), OFF64_HI_LO(nbytes), flags);
 #  elif defined __NR_sync_file_range2