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authorH. Peter Anvin <hpa@linux.intel.com>2011-11-11 16:07:41 -0800
committerH. Peter Anvin <hpa@linux.intel.com>2011-11-17 13:35:37 -0800
commit303395ac3bf3e2cb488435537d416bc840438fcb (patch)
treef979e40575b28ba5bb851d6de0bb0ae5b91541c3 /arch/x86/kernel/syscall_32.c
parent29dc54c673ea2531d589400badb4ada5f5f60dae (diff)
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.c25
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 00000000000..b37a5733660
--- /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>
+};