hppa: add cacheflush() syscall wrapper

The hppa Linux kernel supports the cacheflush() syscall
since version 6.5. This adds the glibc syscall wrapper.

Signed-off-by: Helge Deller <deller@gmx.de>

---
v2: This patch was too late in release cycle for GLIBC_2.40,
    so update now to GLIBC_2.41 instead.

1 files changed, 36 insertions, 0 deletions

diff --git a/sysdeps/unix/sysv/linux/hppa/sys/cachectl.h b/sysdeps/unix/sysv/linux/hppa/sys/cachectl.h
new file mode 100644
index 0000000..16e47d1
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/hppa/sys/cachectl.h
@@ -0,0 +1,36 @@
+/* HPPA cache flushing interface.
+   Copyright (C) 2018-2024 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
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library.  If not, see
+   <https://www.gnu.org/licenses/>.  */
+
+#ifndef _SYS_CACHECTL_H
+#define _SYS_CACHECTL_H 1
+
+#include <features.h>
+
+/* Get the kernel definition for the op bits.  */
+#include <asm/cachectl.h>
+
+__BEGIN_DECLS
+
+#ifdef __USE_MISC
+extern int cacheflush (void *__addr, const int __nbytes,
+		       const int __op) __THROW;
+#endif
+
+__END_DECLS
+
+#endif /* sys/cachectl.h */