Update copyright dates with scripts/update-copyrights.

[thirdparty/glibc.git] / sysdeps / unix / sysv / linux / sparc / kernel-features.h

diff --git a/sysdeps/unix/sysv/linux/sparc/kernel-features.h b/sysdeps/unix/sysv/linux/sparc/kernel-features.h
index 386f2304d134b8fbe0462e11f78c956a41836724..f441bd811d8a8df1113c0e1d9ecf7fa765da1f5a 100644 (file)
--- a/sysdeps/unix/sysv/linux/sparc/kernel-features.h
+++ b/sysdeps/unix/sysv/linux/sparc/kernel-features.h
@@ -1,6 +1,6 @@
 /* Set flags signalling availability of kernel features based on given
    kernel version number.  SPARC version.
-   Copyright (C) 1999-2016 Free Software Foundation, Inc.
+   Copyright (C) 1999-2019 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
@@ -17,24 +17,65 @@
    License along with the GNU C Library; if not, see
    <http://www.gnu.org/licenses/>.  */
 
-/* SPARC uses socketcall.  */
-#define __ASSUME_SOCKETCALL            1
-
-/* The accept4 syscall was added for SPARC in 2.6.28.  */
-#define __ASSUME_ACCEPT4_SYSCALL_WITH_SOCKETCALL       1
-
-/* The recvmmsg syscall was added for SPARC in 2.6.33.  */
-#define __ASSUME_RECVMMSG_SYSCALL_WITH_SOCKETCALL      1
-
-/* The sendmmsg syscall was added for SPARC in 3.0.  */
-#define __ASSUME_SENDMMSG_SYSCALL_WITH_SOCKETCALL      1
-
 #include_next <kernel-features.h>
 
 /* 32-bit SPARC kernels do not support
    futex_atomic_cmpxchg_inatomic.  */
 #if !defined __arch64__ && !defined __sparc_v9__
-# undef __ASSUME_FUTEX_LOCK_PI
-# undef __ASSUME_REQUEUE_PI
 # undef __ASSUME_SET_ROBUST_LIST
 #endif
+
+/* These syscalls were added for 32-bit in 4.4 (but present for 64-bit
+   in all supported kernel versions); the architecture-independent
+   kernel-features.h assumes some of them to be present by default.
+   getpeername and getsockname syscalls were also added for 32-bit in
+   4.4, but only for 32-bit kernels, not in the compat syscall table
+   for 64-bit kernels.  */
+#if !defined __arch64__ && __LINUX_KERNEL_VERSION < 0x040400
+# undef __ASSUME_SENDMSG_SYSCALL
+# undef __ASSUME_RECVMSG_SYSCALL
+# undef __ASSUME_ACCEPT_SYSCALL
+# undef __ASSUME_CONNECT_SYSCALL
+# undef __ASSUME_RECVFROM_SYSCALL
+# undef __ASSUME_SENDTO_SYSCALL
+#else
+# define __ASSUME_SOCKET_SYSCALL             1
+# define __ASSUME_SOCKETPAIR_SYSCALL         1
+# define __ASSUME_GETSOCKOPT_SYSCALL         1
+# define __ASSUME_SHUTDOWN_SYSCALL           1
+#endif
+
+/* These syscalls were added for both 32-bit and 64-bit in 4.4.  */
+#if __LINUX_KERNEL_VERSION >= 0x040400
+# define __ASSUME_BIND_SYSCALL               1
+# define __ASSUME_LISTEN_SYSCALL             1
+# define __ASSUME_SETSOCKOPT_SYSCALL         1
+#endif
+
+#ifdef __arch64__
+/* sparc64 defines __NR_pause,  however it is not supported (ENOSYS).
+   Undefine so pause.c can use a correct alternative.  */
+# undef __NR_pause
+#endif
+
+/* sparc only supports ipc syscall.  */
+#undef __ASSUME_DIRECT_SYSVIPC_SYSCALLS
+
+/* Support for the renameat2 syscall was added in 3.16.  */
+#if __LINUX_KERNEL_VERSION < 0x031000
+# undef __ASSUME_RENAMEAT2
+#endif
+
+/* SPARC kernel Kconfig does not define CONFIG_CLONE_BACKWARDS, however it
+   has the same ABI as if it did, implemented by sparc-specific code
+   (sparc_do_fork).
+
+   It also has a unique return value convention:
+
+     Parent -->  %o0 == child's  pid, %o1 == 0
+     Child  -->  %o0 == parent's pid, %o1 == 1
+
+   Which required a special macro to correct issue the syscall
+   (INLINE_CLONE_SYSCALL).  */
+#undef __ASSUME_CLONE_DEFAULT
+#define __ASSUME_CLONE_BACKWARDS       1