From: Helge Deller <deller@kernel.org>
To: libc-alpha@sourceware.org, John David Anglin <dave.anglin@bell.net>
Cc: linux-parisc@vger.kernel.org
Subject: [PATCH v2] hppa: Wire up cacheflush syscall
Date: Thu, 19 Dec 2024 00:26:08 +0100 [thread overview]
Message-ID: <Z2NaED_0wNDlLIwZ@p100> (raw)
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.
diff --git a/sysdeps/unix/sysv/linux/hppa/Makefile b/sysdeps/unix/sysv/linux/hppa/Makefile
index 2e031e2f8a..9eebe8e0e7 100644
--- a/sysdeps/unix/sysv/linux/hppa/Makefile
+++ b/sysdeps/unix/sysv/linux/hppa/Makefile
@@ -15,6 +15,11 @@ test-xfail-check-wx-segment = *
endif # $(subdir) == elf
+ifeq ($(subdir),misc)
+sysdep_routines += cacheflush
+sysdep_headers += sys/cachectl.h
+endif
+
ifeq ($(subdir),debug)
test-xfail-tst-ssp-1 = $(have-ssp)
endif # $(subdir) == debug
diff --git a/sysdeps/unix/sysv/linux/hppa/Versions b/sysdeps/unix/sysv/linux/hppa/Versions
index 78528e5fa2..1f83840d2f 100644
--- a/sysdeps/unix/sysv/linux/hppa/Versions
+++ b/sysdeps/unix/sysv/linux/hppa/Versions
@@ -23,4 +23,7 @@ libc {
GLIBC_2.19 {
fanotify_mark;
}
+ GLIBC_2.41 {
+ cacheflush;
+ }
}
diff --git a/sysdeps/unix/sysv/linux/hppa/libc.abilist b/sysdeps/unix/sysv/linux/hppa/libc.abilist
index 8de7644a59..306b90c8b5 100644
--- a/sysdeps/unix/sysv/linux/hppa/libc.abilist
+++ b/sysdeps/unix/sysv/linux/hppa/libc.abilist
@@ -2823,6 +2823,7 @@ GLIBC_2.4 unlinkat F
GLIBC_2.4 unshare F
GLIBC_2.41 sched_getattr F
GLIBC_2.41 sched_setattr F
+GLIBC_2.41 cacheflush F
GLIBC_2.5 __readlinkat_chk F
GLIBC_2.5 inet6_opt_append F
GLIBC_2.5 inet6_opt_find F
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 0000000000..16e47d1329
--- /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 */
diff --git a/sysdeps/unix/sysv/linux/hppa/syscalls.list b/sysdeps/unix/sysv/linux/hppa/syscalls.list
index 12e4adeccc..b3020114d6 100644
--- a/sysdeps/unix/sysv/linux/hppa/syscalls.list
+++ b/sysdeps/unix/sysv/linux/hppa/syscalls.list
@@ -8,5 +8,6 @@ listen - listen i:ii __listen listen
shutdown - shutdown i:ii __shutdown shutdown
socket - socket i:iii __socket socket
socketpair - socketpair i:iiif __socketpair socketpair
+cacheflush - cacheflush i:pii _flush_cache cacheflush
personality EXTRA personality Ei:i __personality personality
reply other threads:[~2024-12-18 23:26 UTC|newest]
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