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Message-Id: <20240704143611.2979589-14-arnd@kernel.org>
Date: Thu, 4 Jul 2024 16:36:07 +0200
From: Arnd Bergmann <arnd@...nel.org>
To: linux-arch@...r.kernel.org
Cc: Arnd Bergmann <arnd@...db.de>,
Masahiro Yamada <masahiroy@...nel.org>,
Nathan Chancellor <nathan@...nel.org>,
Nicolas Schier <nicolas@...sle.eu>,
Vineet Gupta <vgupta@...nel.org>,
Russell King <linux@...linux.org.uk>,
Catalin Marinas <catalin.marinas@....com>,
Will Deacon <will@...nel.org>,
Guo Ren <guoren@...nel.org>,
Brian Cain <bcain@...cinc.com>,
Huacai Chen <chenhuacai@...nel.org>,
WANG Xuerui <kernel@...0n.name>,
Dinh Nguyen <dinguyen@...nel.org>,
Jonas Bonn <jonas@...thpole.se>,
Stefan Kristiansson <stefan.kristiansson@...nalahti.fi>,
Stafford Horne <shorne@...il.com>,
Paul Walmsley <paul.walmsley@...ive.com>,
Palmer Dabbelt <palmer@...belt.com>,
Albert Ou <aou@...s.berkeley.edu>,
Rich Felker <dalias@...c.org>,
John Paul Adrian Glaubitz <glaubitz@...sik.fu-berlin.de>,
"David S. Miller" <davem@...emloft.net>,
Andreas Larsson <andreas@...sler.com>,
Christian Brauner <brauner@...nel.org>,
Mark Rutland <mark.rutland@....com>,
linux-kbuild@...r.kernel.org,
linux-kernel@...r.kernel.org,
linux-snps-arc@...ts.infradead.org,
linux-arm-kernel@...ts.infradead.org,
linux-csky@...r.kernel.org,
linux-hexagon@...r.kernel.org,
loongarch@...ts.linux.dev,
linux-openrisc@...r.kernel.org,
linux-riscv@...ts.infradead.org
Subject: [PATCH 13/17] hexagon: use new system call table
From: Arnd Bergmann <arnd@...db.de>
The uapi/asm/unistd_32.h and asm/syscall_table_32.h headers can now be
generated from scripts/syscall.tbl, which makes this consistent with
the other architectures that have their own syscall.tbl.
The time32, stat64, rlimit and renameat entries in the syscall_abis_32
line are for system calls that were part of the generic ABI when
arch/hexagon got added but are no longer enabled by default for new
architectures.
As a side-effect, calling an unimplemented syscall now return -ENOSYS
rather than branching into a NULL pointer.
Signed-off-by: Arnd Bergmann <arnd@...db.de>
---
arch/hexagon/include/asm/Kbuild | 2 ++
arch/hexagon/include/asm/unistd.h | 10 ++++++++++
arch/hexagon/include/uapi/asm/Kbuild | 2 ++
arch/hexagon/include/uapi/asm/unistd.h | 15 ++-------------
arch/hexagon/kernel/Makefile.syscalls | 3 +++
arch/hexagon/kernel/syscalltab.c | 8 ++++++--
6 files changed, 25 insertions(+), 15 deletions(-)
create mode 100644 arch/hexagon/include/asm/unistd.h
create mode 100644 arch/hexagon/kernel/Makefile.syscalls
diff --git a/arch/hexagon/include/asm/Kbuild b/arch/hexagon/include/asm/Kbuild
index 3ece3c93fe08..8c1a78c8f527 100644
--- a/arch/hexagon/include/asm/Kbuild
+++ b/arch/hexagon/include/asm/Kbuild
@@ -1,4 +1,6 @@
# SPDX-License-Identifier: GPL-2.0
+syscall-y += syscall_table_32.h
+
generic-y += extable.h
generic-y += iomap.h
generic-y += kvm_para.h
diff --git a/arch/hexagon/include/asm/unistd.h b/arch/hexagon/include/asm/unistd.h
new file mode 100644
index 000000000000..1f462bade75c
--- /dev/null
+++ b/arch/hexagon/include/asm/unistd.h
@@ -0,0 +1,10 @@
+/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
+
+#define __ARCH_WANT_STAT64
+#define __ARCH_WANT_SYS_CLONE
+#define __ARCH_WANT_SYS_VFORK
+#define __ARCH_WANT_SYS_FORK
+
+#define __ARCH_BROKEN_SYS_CLONE3
+
+#include <uapi/asm/unistd.h>
diff --git a/arch/hexagon/include/uapi/asm/Kbuild b/arch/hexagon/include/uapi/asm/Kbuild
index e78470141932..2501e82a1a0a 100644
--- a/arch/hexagon/include/uapi/asm/Kbuild
+++ b/arch/hexagon/include/uapi/asm/Kbuild
@@ -1,2 +1,4 @@
# SPDX-License-Identifier: GPL-2.0
+syscall-y += unistd_32.h
+
generic-y += ucontext.h
diff --git a/arch/hexagon/include/uapi/asm/unistd.h b/arch/hexagon/include/uapi/asm/unistd.h
index 4bea7428e747..6f670347dd61 100644
--- a/arch/hexagon/include/uapi/asm/unistd.h
+++ b/arch/hexagon/include/uapi/asm/unistd.h
@@ -27,17 +27,6 @@
* See also: syscalltab.c
*/
-#define sys_mmap2 sys_mmap_pgoff
-#define __ARCH_WANT_RENAMEAT
-#define __ARCH_WANT_STAT64
-#define __ARCH_WANT_SET_GET_RLIMIT
-#define __ARCH_WANT_SYS_EXECVE
-#define __ARCH_WANT_SYS_CLONE
-#define __ARCH_WANT_SYS_VFORK
-#define __ARCH_WANT_SYS_FORK
-#define __ARCH_WANT_TIME32_SYSCALLS
-#define __ARCH_WANT_SYNC_FILE_RANGE2
+#include <asm/unistd_32.h>
-#define __ARCH_BROKEN_SYS_CLONE3
-
-#include <asm-generic/unistd.h>
+#define __NR_sync_file_range2 __NR_sync_file_range
diff --git a/arch/hexagon/kernel/Makefile.syscalls b/arch/hexagon/kernel/Makefile.syscalls
new file mode 100644
index 000000000000..d2b7c5d44d95
--- /dev/null
+++ b/arch/hexagon/kernel/Makefile.syscalls
@@ -0,0 +1,3 @@
+# SPDX-License-Identifier: GPL-2.0
+
+syscall_abis_32 += hexagon time32 stat64 rlimit renameat
diff --git a/arch/hexagon/kernel/syscalltab.c b/arch/hexagon/kernel/syscalltab.c
index 5d98bdc494ec..b53e2eead4ac 100644
--- a/arch/hexagon/kernel/syscalltab.c
+++ b/arch/hexagon/kernel/syscalltab.c
@@ -11,8 +11,10 @@
#include <asm/syscall.h>
-#undef __SYSCALL
#define __SYSCALL(nr, call) [nr] = (call),
+#define __SYSCALL_WITH_COMPAT(nr, native, compat) __SYSCALL(nr, native)
+
+#define sys_mmap2 sys_mmap_pgoff
SYSCALL_DEFINE6(hexagon_fadvise64_64, int, fd, int, advice,
SC_ARG64(offset), SC_ARG64(len))
@@ -21,6 +23,8 @@ SYSCALL_DEFINE6(hexagon_fadvise64_64, int, fd, int, advice,
}
#define sys_fadvise64_64 sys_hexagon_fadvise64_64
+#define sys_sync_file_range sys_sync_file_range2
+
void *sys_call_table[__NR_syscalls] = {
-#include <asm/unistd.h>
+#include <asm/syscall_table_32.h>
};
--
2.39.2
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