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author | H. Peter Anvin <hpa@linux.intel.com> | 2011-11-11 16:07:41 -0800 |
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committer | H. Peter Anvin <hpa@linux.intel.com> | 2011-11-17 13:35:37 -0800 |
commit | 303395ac3bf3e2cb488435537d416bc840438fcb (patch) | |
tree | f979e40575b28ba5bb851d6de0bb0ae5b91541c3 /arch/x86/kernel/syscall_32.c | |
parent | 29dc54c673ea2531d589400badb4ada5f5f60dae (diff) | |
download | op-kernel-dev-303395ac3bf3e2cb488435537d416bc840438fcb.zip op-kernel-dev-303395ac3bf3e2cb488435537d416bc840438fcb.tar.gz |
x86: Generate system call tables and unistd_*.h from tables
Generate system call tables and unistd_*.h automatically from the
tables in arch/x86/syscalls. All other information, like NR_syscalls,
is auto-generated, some of which is in asm-offsets_*.c.
This allows us to keep all the system call information in one place,
and allows for kernel space and user space to see different
information; this is currently used for the ia32 system call numbers
when building the 64-bit kernel, but will be used by the x32 ABI in
the near future.
This also removes some gratuitious differences between i386, x86-64
and ia32; in particular, now all system call tables are generated with
the same mechanism.
Cc: H. J. Lu <hjl.tools@gmail.com>
Cc: Sam Ravnborg <sam@ravnborg.org>
Cc: Michal Marek <mmarek@suse.cz>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Diffstat (limited to 'arch/x86/kernel/syscall_32.c')
-rw-r--r-- | arch/x86/kernel/syscall_32.c | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/arch/x86/kernel/syscall_32.c b/arch/x86/kernel/syscall_32.c new file mode 100644 index 0000000..b37a573 --- /dev/null +++ b/arch/x86/kernel/syscall_32.c @@ -0,0 +1,25 @@ +/* System call table for i386. */ + +#include <linux/linkage.h> +#include <linux/sys.h> +#include <linux/cache.h> +#include <asm/asm-offsets.h> + +#define __SYSCALL_I386(nr, sym, compat) extern asmlinkage void sym(void) ; +#include <asm/syscalls_32.h> +#undef __SYSCALL_I386 + +#define __SYSCALL_I386(nr, sym, compat) [nr] = sym, + +typedef asmlinkage void (*sys_call_ptr_t)(void); + +extern asmlinkage void sys_ni_syscall(void); + +const sys_call_ptr_t sys_call_table[__NR_syscall_max+1] = { + /* + * Smells like a like a compiler bug -- it doesn't work + * when the & below is removed. + */ + [0 ... __NR_syscall_max] = &sys_ni_syscall, +#include <asm/syscalls_32.h> +}; |