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>

arch/x86/Makefile

@@ -117,6 +117,12 @@ KBUILD_CFLAGS += $(call cc-option,-mno-sse -mno-mmx -mno-sse2 -mno-3dnow,)
 KBUILD_CFLAGS += $(mflags-y)
 KBUILD_AFLAGS += $(mflags-y)
 
+###
+# Syscall table generation
+
+archheaders:
+	$(Q)$(MAKE) $(build)=arch/x86/syscalls all
+
 ###
 # Kernel objects
 

arch/x86/ia32/Makefile

@@ -3,7 +3,7 @@
 #
 
 obj-$(CONFIG_IA32_EMULATION) := ia32entry.o sys_ia32.o ia32_signal.o
-obj-$(CONFIG_IA32_EMULATION) += nosyscall.o
+obj-$(CONFIG_IA32_EMULATION) += nosyscall.o syscall_ia32.o
 
 sysv-$(CONFIG_SYSVIPC) := ipc32.o
 obj-$(CONFIG_IA32_EMULATION) += $(sysv-y)

arch/x86/ia32/ia32entry.S

@@ -27,8 +27,6 @@
 
 	.section .entry.text, "ax"
 
-#define IA32_NR_syscalls ((ia32_syscall_end - ia32_sys_call_table)/8)
-
 	.macro IA32_ARG_FIXUP noebp=0
 	movl	%edi,%r8d
 	.if \noebp
@@ -496,357 +494,3 @@ ENTRY(ia32_ptregs_common)
 	jmp  ia32_sysret	/* misbalances the return cache */
 	CFI_ENDPROC
 END(ia32_ptregs_common)
-
-	.section .rodata,"a"
-	.align 8
-ia32_sys_call_table:
-	.quad sys_restart_syscall
-	.quad sys_exit
-	.quad stub32_fork
-	.quad sys_read
-	.quad sys_write
-	.quad compat_sys_open		/* 5 */
-	.quad sys_close
-	.quad sys32_waitpid
-	.quad sys_creat
-	.quad sys_link
-	.quad sys_unlink		/* 10 */
-	.quad stub32_execve
-	.quad sys_chdir
-	.quad compat_sys_time
-	.quad sys_mknod
-	.quad sys_chmod		/* 15 */
-	.quad sys_lchown16
-	.quad quiet_ni_syscall			/* old break syscall holder */
-	.quad sys_stat
-	.quad sys32_lseek
-	.quad sys_getpid		/* 20 */
-	.quad compat_sys_mount	/* mount  */
-	.quad sys_oldumount	/* old_umount  */
-	.quad sys_setuid16
-	.quad sys_getuid16
-	.quad compat_sys_stime	/* stime */		/* 25 */
-	.quad compat_sys_ptrace	/* ptrace */
-	.quad sys_alarm
-	.quad sys_fstat	/* (old)fstat */
-	.quad sys_pause
-	.quad compat_sys_utime	/* 30 */
-	.quad quiet_ni_syscall	/* old stty syscall holder */
-	.quad quiet_ni_syscall	/* old gtty syscall holder */
-	.quad sys_access
-	.quad sys_nice	
-	.quad quiet_ni_syscall	/* 35 */	/* old ftime syscall holder */
-	.quad sys_sync
-	.quad sys32_kill
-	.quad sys_rename
-	.quad sys_mkdir
-	.quad sys_rmdir		/* 40 */
-	.quad sys_dup
-	.quad sys_pipe
-	.quad compat_sys_times
-	.quad quiet_ni_syscall			/* old prof syscall holder */
-	.quad sys_brk		/* 45 */
-	.quad sys_setgid16
-	.quad sys_getgid16
-	.quad sys_signal
-	.quad sys_geteuid16
-	.quad sys_getegid16	/* 50 */
-	.quad sys_acct
-	.quad sys_umount			/* new_umount */
-	.quad quiet_ni_syscall			/* old lock syscall holder */
-	.quad compat_sys_ioctl
-	.quad compat_sys_fcntl64		/* 55 */
-	.quad quiet_ni_syscall			/* old mpx syscall holder */
-	.quad sys_setpgid
-	.quad quiet_ni_syscall			/* old ulimit syscall holder */
-	.quad sys_olduname
-	.quad sys_umask		/* 60 */
-	.quad sys_chroot
-	.quad compat_sys_ustat
-	.quad sys_dup2
-	.quad sys_getppid
-	.quad sys_getpgrp		/* 65 */
-	.quad sys_setsid
-	.quad sys32_sigaction
-	.quad sys_sgetmask
-	.quad sys_ssetmask
-	.quad sys_setreuid16	/* 70 */
-	.quad sys_setregid16
-	.quad sys32_sigsuspend
-	.quad compat_sys_sigpending
-	.quad sys_sethostname
-	.quad compat_sys_setrlimit	/* 75 */
-	.quad compat_sys_old_getrlimit	/* old_getrlimit */
-	.quad compat_sys_getrusage
-	.quad compat_sys_gettimeofday
-	.quad compat_sys_settimeofday
-	.quad sys_getgroups16	/* 80 */
-	.quad sys_setgroups16
-	.quad compat_sys_old_select
-	.quad sys_symlink
-	.quad sys_lstat
-	.quad sys_readlink		/* 85 */
-	.quad sys_uselib
-	.quad sys_swapon
-	.quad sys_reboot
-	.quad compat_sys_old_readdir
-	.quad sys32_mmap		/* 90 */
-	.quad sys_munmap
-	.quad sys_truncate
-	.quad sys_ftruncate
-	.quad sys_fchmod
-	.quad sys_fchown16		/* 95 */
-	.quad sys_getpriority
-	.quad sys_setpriority
-	.quad quiet_ni_syscall			/* old profil syscall holder */
-	.quad compat_sys_statfs
-	.quad compat_sys_fstatfs		/* 100 */
-	.quad sys_ioperm
-	.quad compat_sys_socketcall
-	.quad sys_syslog
-	.quad compat_sys_setitimer
-	.quad compat_sys_getitimer	/* 105 */
-	.quad compat_sys_newstat
-	.quad compat_sys_newlstat
-	.quad compat_sys_newfstat
-	.quad sys_uname
-	.quad stub32_iopl		/* 110 */
-	.quad sys_vhangup
-	.quad quiet_ni_syscall	/* old "idle" system call */
-	.quad sys32_vm86_warning	/* vm86old */ 
-	.quad compat_sys_wait4
-	.quad sys_swapoff		/* 115 */
-	.quad compat_sys_sysinfo
-	.quad sys32_ipc
-	.quad sys_fsync
-	.quad stub32_sigreturn
-	.quad stub32_clone		/* 120 */
-	.quad sys_setdomainname
-	.quad sys_newuname
-	.quad sys_modify_ldt
-	.quad compat_sys_adjtimex
-	.quad sys32_mprotect		/* 125 */
-	.quad compat_sys_sigprocmask
-	.quad quiet_ni_syscall		/* create_module */
-	.quad sys_init_module
-	.quad sys_delete_module
-	.quad quiet_ni_syscall		/* 130  get_kernel_syms */
-	.quad sys32_quotactl
-	.quad sys_getpgid
-	.quad sys_fchdir
-	.quad quiet_ni_syscall	/* bdflush */
-	.quad sys_sysfs		/* 135 */
-	.quad sys_personality
-	.quad quiet_ni_syscall	/* for afs_syscall */
-	.quad sys_setfsuid16
-	.quad sys_setfsgid16
-	.quad sys_llseek		/* 140 */
-	.quad compat_sys_getdents
-	.quad compat_sys_select
-	.quad sys_flock
-	.quad sys_msync
-	.quad compat_sys_readv		/* 145 */
-	.quad compat_sys_writev
-	.quad sys_getsid
-	.quad sys_fdatasync
-	.quad compat_sys_sysctl	/* sysctl */
-	.quad sys_mlock		/* 150 */
-	.quad sys_munlock
-	.quad sys_mlockall
-	.quad sys_munlockall
-	.quad sys_sched_setparam
-	.quad sys_sched_getparam   /* 155 */
-	.quad sys_sched_setscheduler
-	.quad sys_sched_getscheduler
-	.quad sys_sched_yield
-	.quad sys_sched_get_priority_max
-	.quad sys_sched_get_priority_min  /* 160 */
-	.quad sys32_sched_rr_get_interval
-	.quad compat_sys_nanosleep
-	.quad sys_mremap
-	.quad sys_setresuid16
-	.quad sys_getresuid16	/* 165 */
-	.quad sys32_vm86_warning	/* vm86 */ 
-	.quad quiet_ni_syscall	/* query_module */
-	.quad sys_poll
-	.quad quiet_ni_syscall /* old nfsservctl */
-	.quad sys_setresgid16	/* 170 */
-	.quad sys_getresgid16
-	.quad sys_prctl
-	.quad stub32_rt_sigreturn
-	.quad sys32_rt_sigaction
-	.quad sys32_rt_sigprocmask	/* 175 */
-	.quad sys32_rt_sigpending
-	.quad compat_sys_rt_sigtimedwait
-	.quad sys32_rt_sigqueueinfo
-	.quad sys_rt_sigsuspend
-	.quad sys32_pread		/* 180 */
-	.quad sys32_pwrite
-	.quad sys_chown16
-	.quad sys_getcwd
-	.quad sys_capget
-	.quad sys_capset
-	.quad stub32_sigaltstack
-	.quad sys32_sendfile
-	.quad quiet_ni_syscall		/* streams1 */
-	.quad quiet_ni_syscall		/* streams2 */
-	.quad stub32_vfork            /* 190 */
-	.quad compat_sys_getrlimit
-	.quad sys_mmap_pgoff
-	.quad sys32_truncate64
-	.quad sys32_ftruncate64
-	.quad sys32_stat64		/* 195 */
-	.quad sys32_lstat64
-	.quad sys32_fstat64
-	.quad sys_lchown
-	.quad sys_getuid
-	.quad sys_getgid		/* 200 */
-	.quad sys_geteuid
-	.quad sys_getegid
-	.quad sys_setreuid
-	.quad sys_setregid
-	.quad sys_getgroups	/* 205 */
-	.quad sys_setgroups
-	.quad sys_fchown
-	.quad sys_setresuid
-	.quad sys_getresuid
-	.quad sys_setresgid	/* 210 */
-	.quad sys_getresgid
-	.quad sys_chown
-	.quad sys_setuid
-	.quad sys_setgid
-	.quad sys_setfsuid		/* 215 */
-	.quad sys_setfsgid
-	.quad sys_pivot_root
-	.quad sys_mincore
-	.quad sys_madvise
-	.quad compat_sys_getdents64	/* 220 getdents64 */
-	.quad compat_sys_fcntl64	
-	.quad quiet_ni_syscall		/* tux */
-	.quad quiet_ni_syscall    	/* security */
-	.quad sys_gettid	
-	.quad sys32_readahead	/* 225 */
-	.quad sys_setxattr
-	.quad sys_lsetxattr
-	.quad sys_fsetxattr
-	.quad sys_getxattr
-	.quad sys_lgetxattr	/* 230 */
-	.quad sys_fgetxattr
-	.quad sys_listxattr
-	.quad sys_llistxattr
-	.quad sys_flistxattr
-	.quad sys_removexattr	/* 235 */
-	.quad sys_lremovexattr
-	.quad sys_fremovexattr
-	.quad sys_tkill
-	.quad sys_sendfile64 
-	.quad compat_sys_futex		/* 240 */
-	.quad compat_sys_sched_setaffinity
-	.quad compat_sys_sched_getaffinity
-	.quad sys_set_thread_area
-	.quad sys_get_thread_area
-	.quad compat_sys_io_setup	/* 245 */
-	.quad sys_io_destroy
-	.quad compat_sys_io_getevents
-	.quad compat_sys_io_submit
-	.quad sys_io_cancel
-	.quad sys32_fadvise64		/* 250 */
-	.quad quiet_ni_syscall 	/* free_huge_pages */
-	.quad sys_exit_group
-	.quad sys32_lookup_dcookie
-	.quad sys_epoll_create
-	.quad sys_epoll_ctl		/* 255 */
-	.quad sys_epoll_wait
-	.quad sys_remap_file_pages
-	.quad sys_set_tid_address
-	.quad compat_sys_timer_create
-	.quad compat_sys_timer_settime	/* 260 */
-	.quad compat_sys_timer_gettime
-	.quad sys_timer_getoverrun
-	.quad sys_timer_delete
-	.quad compat_sys_clock_settime
-	.quad compat_sys_clock_gettime	/* 265 */
-	.quad compat_sys_clock_getres
-	.quad compat_sys_clock_nanosleep
-	.quad compat_sys_statfs64
-	.quad compat_sys_fstatfs64
-	.quad sys_tgkill		/* 270 */
-	.quad compat_sys_utimes
-	.quad sys32_fadvise64_64
-	.quad quiet_ni_syscall	/* sys_vserver */
-	.quad sys_mbind
-	.quad compat_sys_get_mempolicy	/* 275 */
-	.quad sys_set_mempolicy
-	.quad compat_sys_mq_open
-	.quad sys_mq_unlink
-	.quad compat_sys_mq_timedsend
-	.quad compat_sys_mq_timedreceive	/* 280 */
-	.quad compat_sys_mq_notify
-	.quad compat_sys_mq_getsetattr
-	.quad compat_sys_kexec_load	/* reserved for kexec */
-	.quad compat_sys_waitid
-	.quad quiet_ni_syscall		/* 285: sys_altroot */
-	.quad sys_add_key
-	.quad sys_request_key
-	.quad sys_keyctl
-	.quad sys_ioprio_set
-	.quad sys_ioprio_get		/* 290 */
-	.quad sys_inotify_init
-	.quad sys_inotify_add_watch
-	.quad sys_inotify_rm_watch
-	.quad sys_migrate_pages
-	.quad compat_sys_openat		/* 295 */
-	.quad sys_mkdirat
-	.quad sys_mknodat
-	.quad sys_fchownat
-	.quad compat_sys_futimesat
-	.quad sys32_fstatat		/* 300 */
-	.quad sys_unlinkat
-	.quad sys_renameat
-	.quad sys_linkat
-	.quad sys_symlinkat
-	.quad sys_readlinkat		/* 305 */
-	.quad sys_fchmodat
-	.quad sys_faccessat
-	.quad compat_sys_pselect6
-	.quad compat_sys_ppoll
-	.quad sys_unshare		/* 310 */
-	.quad compat_sys_set_robust_list
-	.quad compat_sys_get_robust_list
-	.quad sys_splice
-	.quad sys32_sync_file_range
-	.quad sys_tee			/* 315 */
-	.quad compat_sys_vmsplice
-	.quad compat_sys_move_pages
-	.quad sys_getcpu
-	.quad sys_epoll_pwait
-	.quad compat_sys_utimensat	/* 320 */
-	.quad compat_sys_signalfd
-	.quad sys_timerfd_create
-	.quad sys_eventfd
-	.quad sys32_fallocate
-	.quad compat_sys_timerfd_settime	/* 325 */
-	.quad compat_sys_timerfd_gettime
-	.quad compat_sys_signalfd4
-	.quad sys_eventfd2
-	.quad sys_epoll_create1
-	.quad sys_dup3				/* 330 */
-	.quad sys_pipe2
-	.quad sys_inotify_init1
-	.quad compat_sys_preadv
-	.quad compat_sys_pwritev
-	.quad compat_sys_rt_tgsigqueueinfo	/* 335 */
-	.quad sys_perf_event_open
-	.quad compat_sys_recvmmsg
-	.quad sys_fanotify_init
-	.quad sys32_fanotify_mark
-	.quad sys_prlimit64		/* 340 */
-	.quad sys_name_to_handle_at
-	.quad compat_sys_open_by_handle_at
-	.quad compat_sys_clock_adjtime
-	.quad sys_syncfs
-	.quad compat_sys_sendmmsg	/* 345 */
-	.quad sys_setns
-	.quad compat_sys_process_vm_readv
-	.quad compat_sys_process_vm_writev
-ia32_syscall_end:

arch/x86/ia32/syscall_ia32.c

+/* System call table for ia32 emulation. */
+
+#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 compat(void) ;
+#include <asm/syscalls_32.h>
+#undef __SYSCALL_I386
+
+#define __SYSCALL_I386(nr, sym, compat) [nr] = compat,
+
+typedef void (*sys_call_ptr_t)(void);
+
+extern void compat_ni_syscall(void);
+
+const sys_call_ptr_t ia32_sys_call_table[__NR_ia32_syscall_max+1] = {
+	/*
+	 * Smells like a like a compiler bug -- it doesn't work
+	 * when the & below is removed.
+	 */
+	[0 ... __NR_ia32_syscall_max] = &compat_ni_syscall,
+#include <asm/syscalls_32.h>
+};

arch/x86/include/asm/Kbuild

@@ -19,7 +19,8 @@ header-y += processor-flags.h
 header-y += ptrace-abi.h
 header-y += sigcontext32.h
 header-y += ucontext.h
-header-y += unistd_32.h
-header-y += unistd_64.h
 header-y += vm86.h
 header-y += vsyscall.h
+
+genhdr-y += unistd_32.h
+genhdr-y += unistd_64.h

arch/x86/include/asm/ia32_unistd.h

@@ -2,17 +2,10 @@
 #define _ASM_X86_IA32_UNISTD_H
 
 /*
- * This file contains the system call numbers of the ia32 port,
+ * This file contains the system call numbers of the ia32 compat ABI,
  * this is for the kernel only.
- * Only add syscalls here where some part of the kernel needs to know
- * the number. This should be otherwise in sync with asm-x86/unistd_32.h. -AK
  */
-
-#define __NR_ia32_restart_syscall 0
-#define __NR_ia32_exit		  1
-#define __NR_ia32_read		  3
-#define __NR_ia32_write		  4
-#define __NR_ia32_sigreturn	119
-#define __NR_ia32_rt_sigreturn	173
+#define __SYSCALL_ia32_NR(x) (x)
+#include <asm/unistd_32_ia32.h>
 
 #endif /* _ASM_X86_IA32_UNISTD_H */

arch/x86/include/asm/unistd.h

+#ifndef _ASM_X86_UNISTD_H
+#define _ASM_X86_UNISTD_H 1
+
 #ifdef __KERNEL__
 # ifdef CONFIG_X86_32
-#  include "unistd_32.h"
+
+#  include <asm/unistd_32.h>
+#  define __ARCH_WANT_IPC_PARSE_VERSION
+#  define __ARCH_WANT_STAT64
+#  define __ARCH_WANT_SYS_OLD_MMAP
+#  define __ARCH_WANT_SYS_OLD_SELECT
+
 # else
-#  include "unistd_64.h"
+
+#  include <asm/unistd_64.h>
+#  define __ARCH_WANT_COMPAT_SYS_TIME
+
 # endif
+
+# define __ARCH_WANT_OLD_READDIR
+# define __ARCH_WANT_OLD_STAT
+# define __ARCH_WANT_SYS_ALARM
+# define __ARCH_WANT_SYS_FADVISE64
+# define __ARCH_WANT_SYS_GETHOSTNAME
+# define __ARCH_WANT_SYS_GETPGRP
+# define __ARCH_WANT_SYS_LLSEEK
+# define __ARCH_WANT_SYS_NICE
+# define __ARCH_WANT_SYS_OLDUMOUNT
+# define __ARCH_WANT_SYS_OLD_GETRLIMIT
+# define __ARCH_WANT_SYS_OLD_UNAME
+# define __ARCH_WANT_SYS_PAUSE
+# define __ARCH_WANT_SYS_RT_SIGACTION
+# define __ARCH_WANT_SYS_RT_SIGSUSPEND
+# define __ARCH_WANT_SYS_SGETMASK
+# define __ARCH_WANT_SYS_SIGNAL
+# define __ARCH_WANT_SYS_SIGPENDING
+# define __ARCH_WANT_SYS_SIGPROCMASK
+# define __ARCH_WANT_SYS_SOCKETCALL
+# define __ARCH_WANT_SYS_TIME
+# define __ARCH_WANT_SYS_UTIME
+# define __ARCH_WANT_SYS_WAITPID
+
+/*
+ * "Conditional" syscalls
+ *
+ * What we want is __attribute__((weak,alias("sys_ni_syscall"))),
+ * but it doesn't work on all toolchains, so we just do it by hand
+ */
+# define cond_syscall(x) asm(".weak\t" #x "\n\t.set\t" #x ",sys_ni_syscall")
+
 #else
 # ifdef __i386__
-#  include "unistd_32.h"
+#  include <asm/unistd_32.h>
 # else
-#  include "unistd_64.h"
+#  include <asm/unistd_64.h>
 # endif
 #endif
+
+#endif /* _ASM_X86_UNISTD_H */

arch/x86/kernel/Makefile

@@ -25,7 +25,8 @@ obj-$(CONFIG_IRQ_WORK)  += irq_work.o
 obj-y			+= probe_roms.o
 obj-$(CONFIG_X86_32)	+= sys_i386_32.o i386_ksyms_32.o
 obj-$(CONFIG_X86_64)	+= sys_x86_64.o x8664_ksyms_64.o
-obj-$(CONFIG_X86_64)	+= syscall_64.o vsyscall_64.o
+obj-y			+= syscall_$(BITS).o
+obj-$(CONFIG_X86_64)	+= vsyscall_64.o
 obj-$(CONFIG_X86_64)	+= vsyscall_emu_64.o
 obj-y			+= bootflag.o e820.o
 obj-y			+= pci-dma.o quirks.o topology.o kdebugfs.o

arch/x86/kernel/asm-offsets_32.c

@@ -3,6 +3,11 @@
 #include <linux/lguest.h>
 #include "../../../drivers/lguest/lg.h"
 
+#define __SYSCALL_I386(nr, sym, compat) [nr] = 1,
+static char syscalls[] = {
+#include <asm/syscalls_32.h>
+};
+
 /* workaround for a warning with -Wmissing-prototypes */
 void foo(void);
 
@@ -76,4 +81,7 @@ void foo(void)
 	OFFSET(LGUEST_PAGES_regs_errcode, lguest_pages, regs.errcode);
 	OFFSET(LGUEST_PAGES_regs, lguest_pages, regs);
 #endif
+	BLANK();
+	DEFINE(__NR_syscall_max, sizeof(syscalls) - 1);
+	DEFINE(NR_syscalls, sizeof(syscalls));
 }

arch/x86/kernel/asm-offsets_64.c

 #include <asm/ia32.h>
 
-#define __NO_STUBS 1
-#undef __SYSCALL
-#undef _ASM_X86_UNISTD_64_H
-#define __SYSCALL(nr, sym) [nr] = 1,
-static char syscalls[] = {
-#include <asm/unistd.h>
+#define __SYSCALL_64(nr, sym, compat) [nr] = 1,
+static char syscalls_64[] = {
+#include <asm/syscalls_64.h>
+};
+#define __SYSCALL_I386(nr, sym, compat) [nr] = 1,
+static char syscalls_ia32[] = {
+#include <asm/syscalls_32.h>
 };
 
 int main(void)
@@ -72,7 +73,11 @@ int main(void)
 	OFFSET(TSS_ist, tss_struct, x86_tss.ist);
 	BLANK();
 
-	DEFINE(__NR_syscall_max, sizeof(syscalls) - 1);
+	DEFINE(__NR_syscall_max, sizeof(syscalls_64) - 1);
+	DEFINE(NR_syscalls, sizeof(syscalls_64));
+
+	DEFINE(__NR_ia32_syscall_max, sizeof(syscalls_ia32) - 1);
+	DEFINE(IA32_NR_syscalls, sizeof(syscalls_ia32));
 
 	return 0;
 }

arch/x86/kernel/entry_32.S

@@ -81,8 +81,6 @@
  * enough to patch inline, increasing performance.
  */
 
-#define nr_syscalls ((syscall_table_size)/4)
-
 #ifdef CONFIG_PREEMPT
 #define preempt_stop(clobbers)	DISABLE_INTERRUPTS(clobbers); TRACE_IRQS_OFF
 #else
@@ -423,7 +421,7 @@ sysenter_past_esp:
 	testl $_TIF_WORK_SYSCALL_ENTRY,TI_flags(%ebp)
 	jnz sysenter_audit
 sysenter_do_call:
-	cmpl $(nr_syscalls), %eax
+	cmpl $(NR_syscalls), %eax
 	jae syscall_badsys
 	call *sys_call_table(,%eax,4)
 	movl %eax,PT_EAX(%esp)
@@ -504,7 +502,7 @@ ENTRY(system_call)
 					# system call tracing in operation / emulation
 	testl $_TIF_WORK_SYSCALL_ENTRY,TI_flags(%ebp)
 	jnz syscall_trace_entry
-	cmpl $(nr_syscalls), %eax
+	cmpl $(NR_syscalls), %eax
 	jae syscall_badsys
 syscall_call:
 	call *sys_call_table(,%eax,4)
@@ -650,7 +648,7 @@ syscall_trace_entry:
 	movl %esp, %eax
 	call syscall_trace_enter
 	/* What it returned is what we'll actually use.  */
-	cmpl $(nr_syscalls), %eax
+	cmpl $(NR_syscalls), %eax
 	jnae syscall_call
 	jmp syscall_exit
 END(syscall_trace_entry)
@@ -690,29 +688,28 @@ END(syscall_badsys)
  * System calls that need a pt_regs pointer.
  */
 #define PTREGSCALL0(name) \
-	ALIGN; \
-ptregs_##name: \
+ENTRY(ptregs_##name) ;  \
 	leal 4(%esp),%eax; \
-	jmp sys_##name;
+	jmp sys_##name; \
+ENDPROC(ptregs_##name)
 
 #define PTREGSCALL1(name) \
-	ALIGN; \
-ptregs_##name: \
+ENTRY(ptregs_##name) ; \
 	leal 4(%esp),%edx; \
 	movl (PT_EBX+4)(%esp),%eax; \
-	jmp sys_##name;
+	jmp sys_##name; \
+ENDPROC(ptregs_##name)
 
 #define PTREGSCALL2(name) \
-	ALIGN; \
-ptregs_##name: \
+ENTRY(ptregs_##name) ; \
 	leal 4(%esp),%ecx; \
 	movl (PT_ECX+4)(%esp),%edx; \
 	movl (PT_EBX+4)(%esp),%eax; \
-	jmp sys_##name;
+	jmp sys_##name; \
+ENDPROC(ptregs_##name)
 
 #define PTREGSCALL3(name) \
-	ALIGN; \
-ptregs_##name: \
+ENTRY(ptregs_##name) ; \
 	CFI_STARTPROC; \
 	leal 4(%esp),%eax; \
 	pushl_cfi %eax; \
@@ -737,8 +734,7 @@ PTREGSCALL2(vm86)
 PTREGSCALL1(vm86old)
 
 /* Clone is an oddball.  The 4th arg is in %edi */
-	ALIGN;
-ptregs_clone:
+ENTRY(ptregs_clone)
 	CFI_STARTPROC
 	leal 4(%esp),%eax
 	pushl_cfi %eax
@@ -1209,11 +1205,6 @@ return_to_handler:
 	jmp *%ecx
 #endif
 
-.section .rodata,"a"
-#include "syscall_table_32.S"
-
-syscall_table_size=(.-sys_call_table)
-
 /*
  * Some functions should be protected against kprobes
  */

arch/x86/kernel/syscall_32.c

+/* 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>
+};

arch/x86/kernel/syscall_64.c

@@ -5,15 +5,11 @@
 #include <linux/cache.h>
 #include <asm/asm-offsets.h>
 
-#define __NO_STUBS
+#define __SYSCALL_64(nr, sym, compat) extern asmlinkage void sym(void) ;
+#include <asm/syscalls_64.h>
+#undef __SYSCALL_64
 
-#define __SYSCALL(nr, sym) extern asmlinkage void sym(void) ;
-#undef _ASM_X86_UNISTD_64_H
-#include <asm/unistd_64.h>
-
-#undef __SYSCALL
-#define __SYSCALL(nr, sym) [nr] = sym,
-#undef _ASM_X86_UNISTD_64_H
+#define __SYSCALL_64(nr, sym, compat) [nr] = sym,
 
 typedef void (*sys_call_ptr_t)(void);
 
@@ -25,5 +21,5 @@ const sys_call_ptr_t sys_call_table[__NR_syscall_max+1] = {
 	 * when the & below is removed.
 	 */
 	[0 ... __NR_syscall_max] = &sys_ni_syscall,
-#include <asm/unistd_64.h>
+#include <asm/syscalls_64.h>
 };

arch/x86/kernel/syscall_table_32.S

-ENTRY(sys_call_table)
-	.long sys_restart_syscall	/* 0 - old "setup()" system call, used for restarting */
-	.long sys_exit
-	.long ptregs_fork
-	.long sys_read
-	.long sys_write
-	.long sys_open		/* 5 */
-	.long sys_close
-	.long sys_waitpid
-	.long sys_creat
-	.long sys_link
-	.long sys_unlink	/* 10 */
-	.long ptregs_execve
-	.long sys_chdir
-	.long sys_time
-	.long sys_mknod
-	.long sys_chmod		/* 15 */
-	.long sys_lchown16
-	.long sys_ni_syscall	/* old break syscall holder */
-	.long sys_stat
-	.long sys_lseek
-	.long sys_getpid	/* 20 */
-	.long sys_mount
-	.long sys_oldumount
-	.long sys_setuid16
-	.long sys_getuid16
-	.long sys_stime		/* 25 */
-	.long sys_ptrace
-	.long sys_alarm
-	.long sys_fstat
-	.long sys_pause
-	.long sys_utime		/* 30 */
-	.long sys_ni_syscall	/* old stty syscall holder */
-	.long sys_ni_syscall	/* old gtty syscall holder */
-	.long sys_access
-	.long sys_nice
-	.long sys_ni_syscall	/* 35 - old ftime syscall holder */
-	.long sys_sync
-	.long sys_kill
-	.long sys_rename
-	.long sys_mkdir
-	.long sys_rmdir		/* 40 */
-	.long sys_dup
-	.long sys_pipe
-	.long sys_times
-	.long sys_ni_syscall	/* old prof syscall holder */
-	.long sys_brk		/* 45 */
-	.long sys_setgid16
-	.long sys_getgid16
-	.long sys_signal
-	.long sys_geteuid16
-	.long sys_getegid16	/* 50 */
-	.long sys_acct
-	.long sys_umount	/* recycled never used phys() */
-	.long sys_ni_syscall	/* old lock syscall holder */
-	.long sys_ioctl
-	.long sys_fcntl		/* 55 */
-	.long sys_ni_syscall	/* old mpx syscall holder */
-	.long sys_setpgid
-	.long sys_ni_syscall	/* old ulimit syscall holder */
-	.long sys_olduname
-	.long sys_umask		/* 60 */
-	.long sys_chroot
-	.long sys_ustat
-	.long sys_dup2
-	.long sys_getppid
-	.long sys_getpgrp	/* 65 */
-	.long sys_setsid
-	.long sys_sigaction
-	.long sys_sgetmask
-	.long sys_ssetmask
-	.long sys_setreuid16	/* 70 */
-	.long sys_setregid16
-	.long sys_sigsuspend
-	.long sys_sigpending
-	.long sys_sethostname
-	.long sys_setrlimit	/* 75 */
-	.long sys_old_getrlimit
-	.long sys_getrusage
-	.long sys_gettimeofday
-	.long sys_settimeofday
-	.long sys_getgroups16	/* 80 */
-	.long sys_setgroups16
-	.long sys_old_select
-	.long sys_symlink
-	.long sys_lstat
-	.long sys_readlink	/* 85 */
-	.long sys_uselib
-	.long sys_swapon
-	.long sys_reboot
-	.long sys_old_readdir
-	.long sys_old_mmap	/* 90 */
-	.long sys_munmap
-	.long sys_truncate
-	.long sys_ftruncate
-	.long sys_fchmod
-	.long sys_fchown16	/* 95 */
-	.long sys_getpriority
-	.long sys_setpriority
-	.long sys_ni_syscall	/* old profil syscall holder */
-	.long sys_statfs
-	.long sys_fstatfs	/* 100 */
-	.long sys_ioperm
-	.long sys_socketcall
-	.long sys_syslog
-	.long sys_setitimer
-	.long sys_getitimer	/* 105 */
-	.long sys_newstat
-	.long sys_newlstat
-	.long sys_newfstat
-	.long sys_uname
-	.long ptregs_iopl	/* 110 */
-	.long sys_vhangup
-	.long sys_ni_syscall	/* old "idle" system call */
-	.long ptregs_vm86old
-	.long sys_wait4
-	.long sys_swapoff	/* 115 */
-	.long sys_sysinfo
-	.long sys_ipc
-	.long sys_fsync
-	.long ptregs_sigreturn
-	.long ptregs_clone	/* 120 */
-	.long sys_setdomainname
-	.long sys_newuname
-	.long sys_modify_ldt
-	.long sys_adjtimex
-	.long sys_mprotect	/* 125 */
-	.long sys_sigprocmask
-	.long sys_ni_syscall	/* old "create_module" */
-	.long sys_init_module
-	.long sys_delete_module
-	.long sys_ni_syscall	/* 130:	old "get_kernel_syms" */
-	.long sys_quotactl
-	.long sys_getpgid
-	.long sys_fchdir
-	.long sys_bdflush
-	.long sys_sysfs		/* 135 */
-	.long sys_personality
-	.long sys_ni_syscall	/* reserved for afs_syscall */
-	.long sys_setfsuid16
-	.long sys_setfsgid16
-	.long sys_llseek	/* 140 */
-	.long sys_getdents
-	.long sys_select
-	.long sys_flock
-	.long sys_msync
-	.long sys_readv		/* 145 */
-	.long sys_writev
-	.long sys_getsid
-	.long sys_fdatasync
-	.long sys_sysctl
-	.long sys_mlock		/* 150 */
-	.long sys_munlock
-	.long sys_mlockall
-	.long sys_munlockall
-	.long sys_sched_setparam
-	.long sys_sched_getparam   /* 155 */
-	.long sys_sched_setscheduler
-	.long sys_sched_getscheduler
-	.long sys_sched_yield
-	.long sys_sched_get_priority_max
-	.long sys_sched_get_priority_min  /* 160 */
-	.long sys_sched_rr_get_interval
-	.long sys_nanosleep
-	.long sys_mremap
-	.long sys_setresuid16
-	.long sys_getresuid16	/* 165 */
-	.long ptregs_vm86
-	.long sys_ni_syscall	/* Old sys_query_module */
-	.long sys_poll
-	.long sys_ni_syscall	/* Old nfsservctl */
-	.long sys_setresgid16	/* 170 */
-	.long sys_getresgid16
-	.long sys_prctl
-	.long ptregs_rt_sigreturn
-	.long sys_rt_sigaction
-	.long sys_rt_sigprocmask	/* 175 */
-	.long sys_rt_sigpending
-	.long sys_rt_sigtimedwait
-	.long sys_rt_sigqueueinfo
-	.long sys_rt_sigsuspend
-	.long sys_pread64	/* 180 */
-	.long sys_pwrite64
-	.long sys_chown16
-	.long sys_getcwd
-	.long sys_capget
-	.long sys_capset	/* 185 */
-	.long ptregs_sigaltstack
-	.long sys_sendfile
-	.long sys_ni_syscall	/* reserved for streams1 */
-	.long sys_ni_syscall	/* reserved for streams2 */
-	.long ptregs_vfork	/* 190 */
-	.long sys_getrlimit
-	.long sys_mmap_pgoff
-	.long sys_truncate64
-	.long sys_ftruncate64
-	.long sys_stat64	/* 195 */
-	.long sys_lstat64
-	.long sys_fstat64
-	.long sys_lchown
-	.long sys_getuid
-	.long sys_getgid	/* 200 */
-	.long sys_geteuid
-	.long sys_getegid
-	.long sys_setreuid
-	.long sys_setregid
-	.long sys_getgroups	/* 205 */
-	.long sys_setgroups
-	.long sys_fchown
-	.long sys_setresuid
-	.long sys_getresuid
-	.long sys_setresgid	/* 210 */
-	.long sys_getresgid
-	.long sys_chown
-	.long sys_setuid
-	.long sys_setgid
-	.long sys_setfsuid	/* 215 */
-	.long sys_setfsgid
-	.long sys_pivot_root
-	.long sys_mincore
-	.long sys_madvise
-	.long sys_getdents64	/* 220 */
-	.long sys_fcntl64
-	.long sys_ni_syscall	/* reserved for TUX */
-	.long sys_ni_syscall
-	.long sys_gettid
-	.long sys_readahead	/* 225 */
-	.long sys_setxattr
-	.long sys_lsetxattr
-	.long sys_fsetxattr
-	.long sys_getxattr
-	.long sys_lgetxattr	/* 230 */
-	.long sys_fgetxattr
-	.long sys_listxattr
-	.long sys_llistxattr
-	.long sys_flistxattr
-	.long sys_removexattr	/* 235 */
-	.long sys_lremovexattr
-	.long sys_fremovexattr
-	.long sys_tkill
-	.long sys_sendfile64
-	.long sys_futex		/* 240 */
-	.long sys_sched_setaffinity
-	.long sys_sched_getaffinity
-	.long sys_set_thread_area
-	.long sys_get_thread_area
-	.long sys_io_setup	/* 245 */
-	.long sys_io_destroy
-	.long sys_io_getevents
-	.long sys_io_submit
-	.long sys_io_cancel
-	.long sys_fadvise64	/* 250 */
-	.long sys_ni_syscall
-	.long sys_exit_group
-	.long sys_lookup_dcookie
-	.long sys_epoll_create
-	.long sys_epoll_ctl	/* 255 */
-	.long sys_epoll_wait
- 	.long sys_remap_file_pages
- 	.long sys_set_tid_address
- 	.long sys_timer_create
- 	.long sys_timer_settime		/* 260 */
- 	.long sys_timer_gettime
- 	.long sys_timer_getoverrun
- 	.long sys_timer_delete
- 	.long sys_clock_settime
- 	.long sys_clock_gettime		/* 265 */
- 	.long sys_clock_getres
- 	.long sys_clock_nanosleep
-	.long sys_statfs64
-	.long sys_fstatfs64
-	.long sys_tgkill	/* 270 */
-	.long sys_utimes
- 	.long sys_fadvise64_64
-	.long sys_ni_syscall	/* sys_vserver */
-	.long sys_mbind
-	.long sys_get_mempolicy
-	.long sys_set_mempolicy
-	.long sys_mq_open
-	.long sys_mq_unlink
-	.long sys_mq_timedsend
-	.long sys_mq_timedreceive	/* 280 */
-	.long sys_mq_notify
-	.long sys_mq_getsetattr
-	.long sys_kexec_load
-	.long sys_waitid
-	.long sys_ni_syscall		/* 285 */ /* available */
-	.long sys_add_key
-	.long sys_request_key
-	.long sys_keyctl
-	.long sys_ioprio_set
-	.long sys_ioprio_get		/* 290 */
-	.long sys_inotify_init
-	.long sys_inotify_add_watch
-	.long sys_inotify_rm_watch
-	.long sys_migrate_pages
-	.long sys_openat		/* 295 */
-	.long sys_mkdirat
-	.long sys_mknodat
-	.long sys_fchownat
-	.long sys_futimesat
-	.long sys_fstatat64		/* 300 */
-	.long sys_unlinkat
-	.long sys_renameat
-	.long sys_linkat
-	.long sys_symlinkat
-	.long sys_readlinkat		/* 305 */
-	.long sys_fchmodat
-	.long sys_faccessat
-	.long sys_pselect6
-	.long sys_ppoll
-	.long sys_unshare		/* 310 */
-	.long sys_set_robust_list
-	.long sys_get_robust_list
-	.long sys_splice
-	.long sys_sync_file_range
-	.long sys_tee			/* 315 */
-	.long sys_vmsplice
-	.long sys_move_pages
-	.long sys_getcpu
-	.long sys_epoll_pwait
-	.long sys_utimensat		/* 320 */
-	.long sys_signalfd
-	.long sys_timerfd_create
-	.long sys_eventfd
-	.long sys_fallocate
-	.long sys_timerfd_settime	/* 325 */
-	.long sys_timerfd_gettime
-	.long sys_signalfd4
-	.long sys_eventfd2
-	.long sys_epoll_create1
-	.long sys_dup3			/* 330 */
-	.long sys_pipe2
-	.long sys_inotify_init1
-	.long sys_preadv
-	.long sys_pwritev
-	.long sys_rt_tgsigqueueinfo	/* 335 */
-	.long sys_perf_event_open
-	.long sys_recvmmsg
-	.long sys_fanotify_init
-	.long sys_fanotify_mark
-	.long sys_prlimit64		/* 340 */
-	.long sys_name_to_handle_at
-	.long sys_open_by_handle_at
-	.long sys_clock_adjtime
-	.long sys_syncfs
-	.long sys_sendmmsg		/* 345 */
-	.long sys_setns
-	.long sys_process_vm_readv
-	.long sys_process_vm_writev