From ef608c5767f983123b7d7f18b1b940e934419a3c Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Tue, 23 Apr 2024 17:52:56 +0200 Subject: [PATCH] nios2: convert to generic syscall table 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. nios2 has one extra system call that gets added to scripts/syscall.tbl. The time32, stat64, and rlimit entries in the syscall_abis_32 line are for system calls that were part of the generic ABI when arch/nios2 got added but are no longer enabled by default for new architectures. Both the user visible side of asm/unistd.h and the internal syscall table in the kernel should have the same effective contents after this. Signed-off-by: Arnd Bergmann --- arch/nios2/include/asm/Kbuild | 2 ++ arch/nios2/include/asm/unistd.h | 12 ++++++++++++ arch/nios2/include/uapi/asm/Kbuild | 2 ++ arch/nios2/include/uapi/asm/unistd.h | 16 +--------------- arch/nios2/kernel/Makefile.syscalls | 3 +++ arch/nios2/kernel/syscall_table.c | 6 ++++-- scripts/syscall.tbl | 2 ++ 7 files changed, 26 insertions(+), 17 deletions(-) create mode 100644 arch/nios2/include/asm/unistd.h create mode 100644 arch/nios2/kernel/Makefile.syscalls diff --git a/arch/nios2/include/asm/Kbuild b/arch/nios2/include/asm/Kbuild index 7fe7437555fb..0d09829ed144 100644 --- a/arch/nios2/include/asm/Kbuild +++ b/arch/nios2/include/asm/Kbuild @@ -1,4 +1,6 @@ # SPDX-License-Identifier: GPL-2.0 +syscall-y += syscall_table_32.h + generic-y += cmpxchg.h generic-y += extable.h generic-y += kvm_para.h diff --git a/arch/nios2/include/asm/unistd.h b/arch/nios2/include/asm/unistd.h new file mode 100644 index 000000000000..1146e56473c5 --- /dev/null +++ b/arch/nios2/include/asm/unistd.h @@ -0,0 +1,12 @@ +/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ +#ifndef __ASM_UNISTD_H +#define __ASM_UNISTD_H + +#include + +#define __ARCH_WANT_STAT64 +#define __ARCH_WANT_SET_GET_RLIMIT + +#define __ARCH_BROKEN_SYS_CLONE3 + +#endif diff --git a/arch/nios2/include/uapi/asm/Kbuild b/arch/nios2/include/uapi/asm/Kbuild index e78470141932..2501e82a1a0a 100644 --- a/arch/nios2/include/uapi/asm/Kbuild +++ b/arch/nios2/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/nios2/include/uapi/asm/unistd.h b/arch/nios2/include/uapi/asm/unistd.h index d2bc5ac975fb..1f0e0f5538d9 100644 --- a/arch/nios2/include/uapi/asm/unistd.h +++ b/arch/nios2/include/uapi/asm/unistd.h @@ -16,18 +16,4 @@ * */ - #define sys_mmap2 sys_mmap_pgoff - -#define __ARCH_WANT_RENAMEAT -#define __ARCH_WANT_STAT64 -#define __ARCH_WANT_SET_GET_RLIMIT -#define __ARCH_WANT_TIME32_SYSCALLS - -#define __ARCH_BROKEN_SYS_CLONE3 - -/* Use the standard ABI for syscalls */ -#include - -/* Additional Nios II specific syscalls. */ -#define __NR_cacheflush (__NR_arch_specific_syscall) -__SYSCALL(__NR_cacheflush, sys_cacheflush) +#include diff --git a/arch/nios2/kernel/Makefile.syscalls b/arch/nios2/kernel/Makefile.syscalls new file mode 100644 index 000000000000..579a9daec272 --- /dev/null +++ b/arch/nios2/kernel/Makefile.syscalls @@ -0,0 +1,3 @@ +# SPDX-License-Identifier: GPL-2.0 + +syscall_abis_32 += nios2 time32 stat64 renameat rlimit diff --git a/arch/nios2/kernel/syscall_table.c b/arch/nios2/kernel/syscall_table.c index c2875a6dd5a4..434694067d8f 100644 --- a/arch/nios2/kernel/syscall_table.c +++ b/arch/nios2/kernel/syscall_table.c @@ -9,10 +9,12 @@ #include -#undef __SYSCALL #define __SYSCALL(nr, call) [nr] = (call), +#define __SYSCALL_WITH_COMPAT(nr, native, compat) __SYSCALL(nr, native) + +#define sys_mmap2 sys_mmap_pgoff void *sys_call_table[__NR_syscalls] = { [0 ... __NR_syscalls-1] = sys_ni_syscall, -#include +#include }; diff --git a/scripts/syscall.tbl b/scripts/syscall.tbl index ed0ecba8fea4..40307011abdb 100644 --- a/scripts/syscall.tbl +++ b/scripts/syscall.tbl @@ -297,6 +297,8 @@ 244 csky set_thread_area sys_set_thread_area 245 csky cacheflush sys_cacheflush +244 nios2 cacheflush sys_cacheflush + 260 time32 wait4 sys_wait4 compat_sys_wait4 260 64 wait4 sys_wait4 261 common prlimit64 sys_prlimit64