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Message-Id: <20200224181757.724961-7-brgerst@gmail.com>
Date: Mon, 24 Feb 2020 13:17:55 -0500
From: Brian Gerst <brgerst@...il.com>
To: linux-kernel@...r.kernel.org, x86@...nel.org
Cc: Thomas Gleixner <tglx@...utronix.de>,
Ingo Molnar <mingo@...nel.org>, Borislav Petkov <bp@...en8.de>,
"H . Peter Anvin" <hpa@...or.com>,
Andy Lutomirski <luto@...nel.org>,
Dominik Brodowski <linux@...inikbrodowski.net>,
Brian Gerst <brgerst@...il.com>
Subject: [PATCH v2 6/8] x86-32: Enable syscall wrappers
Enable pt_regs based syscalls for 32-bit. This makes the 32-bit native
kernel consistent with the 64-bit kernel, and improves the syscall
interface by not needing to push all 6 potential arguments onto the stack.
Signed-off-by: Brian Gerst <brgerst@...il.com>
Reviewed-by: Dominik Brodowski <linux@...inikbrodowski.net>
---
arch/x86/Kconfig | 2 +-
arch/x86/entry/common.c | 20 +-
arch/x86/entry/syscall_32.c | 11 +-
arch/x86/entry/syscall_64.c | 7 -
arch/x86/entry/syscalls/syscall_32.tbl | 818 ++++++++++++-------------
arch/x86/entry/syscalls/syscalltbl.sh | 33 +-
arch/x86/include/asm/syscall.h | 6 -
arch/x86/include/asm/syscall_wrapper.h | 123 ++--
arch/x86/include/asm/syscalls.h | 29 -
9 files changed, 503 insertions(+), 546 deletions(-)
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 7f65ee880463..d1c1920f2a55 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -30,7 +30,6 @@ config X86_64
select MODULES_USE_ELF_RELA
select NEED_DMA_MAP_STATE
select SWIOTLB
- select ARCH_HAS_SYSCALL_WRAPPER
config FORCE_DYNAMIC_FTRACE
def_bool y
@@ -79,6 +78,7 @@ config X86
select ARCH_HAS_STRICT_KERNEL_RWX
select ARCH_HAS_STRICT_MODULE_RWX
select ARCH_HAS_SYNC_CORE_BEFORE_USERMODE
+ select ARCH_HAS_SYSCALL_WRAPPER
select ARCH_HAS_UBSAN_SANITIZE_ALL
select ARCH_HAVE_NMI_SAFE_CMPXCHG
select ARCH_MIGHT_HAVE_ACPI_PDC if ACPI
diff --git a/arch/x86/entry/common.c b/arch/x86/entry/common.c
index ec167d8c41cb..91689fd7a5e8 100644
--- a/arch/x86/entry/common.c
+++ b/arch/x86/entry/common.c
@@ -334,20 +334,7 @@ static __always_inline void do_syscall_32_irqs_on(struct pt_regs *regs)
if (likely(nr < IA32_NR_syscalls)) {
nr = array_index_nospec(nr, IA32_NR_syscalls);
-#ifdef CONFIG_IA32_EMULATION
regs->ax = ia32_sys_call_table[nr](regs);
-#else
- /*
- * It's possible that a 32-bit syscall implementation
- * takes a 64-bit parameter but nonetheless assumes that
- * the high bits are zero. Make sure we zero-extend all
- * of the args.
- */
- regs->ax = ia32_sys_call_table[nr](
- (unsigned int)regs->bx, (unsigned int)regs->cx,
- (unsigned int)regs->dx, (unsigned int)regs->si,
- (unsigned int)regs->di, (unsigned int)regs->bp);
-#endif /* CONFIG_IA32_EMULATION */
}
syscall_return_slowpath(regs);
@@ -439,3 +426,10 @@ __visible long do_fast_syscall_32(struct pt_regs *regs)
#endif
}
#endif
+
+extern asmlinkage long sys_ni_syscall(void);
+
+SYSCALL_DEFINE0(ni_syscall)
+{
+ return sys_ni_syscall();
+}
diff --git a/arch/x86/entry/syscall_32.c b/arch/x86/entry/syscall_32.c
index 7d17b3addbbb..7af944b686ef 100644
--- a/arch/x86/entry/syscall_32.c
+++ b/arch/x86/entry/syscall_32.c
@@ -4,18 +4,11 @@
#include <linux/linkage.h>
#include <linux/sys.h>
#include <linux/cache.h>
+#include <linux/syscalls.h>
#include <asm/asm-offsets.h>
#include <asm/syscall.h>
-#ifdef CONFIG_IA32_EMULATION
-/* On X86_64, we use struct pt_regs * to pass parameters to syscalls */
#define __SYSCALL_I386(nr, sym, qual) extern asmlinkage long sym(const struct pt_regs *);
-#define __sys_ni_syscall __ia32_sys_ni_syscall
-#else /* CONFIG_IA32_EMULATION */
-#define __SYSCALL_I386(nr, sym, qual) extern asmlinkage long sym(unsigned long, unsigned long, unsigned long, unsigned long, unsigned long, unsigned long);
-extern asmlinkage long sys_ni_syscall(unsigned long, unsigned long, unsigned long, unsigned long, unsigned long, unsigned long);
-#define __sys_ni_syscall sys_ni_syscall
-#endif /* CONFIG_IA32_EMULATION */
#include <asm/syscalls_32.h>
#undef __SYSCALL_I386
@@ -27,6 +20,6 @@ __visible const sys_call_ptr_t ia32_sys_call_table[__NR_syscall_compat_max+1] =
* Smells like a compiler bug -- it doesn't work
* when the & below is removed.
*/
- [0 ... __NR_syscall_compat_max] = &__sys_ni_syscall,
+ [0 ... __NR_syscall_compat_max] = &__ia32_sys_ni_syscall,
#include <asm/syscalls_32.h>
};
diff --git a/arch/x86/entry/syscall_64.c b/arch/x86/entry/syscall_64.c
index adf619a856e8..058dc1b73e96 100644
--- a/arch/x86/entry/syscall_64.c
+++ b/arch/x86/entry/syscall_64.c
@@ -8,13 +8,6 @@
#include <asm/asm-offsets.h>
#include <asm/syscall.h>
-extern asmlinkage long sys_ni_syscall(void);
-
-SYSCALL_DEFINE0(ni_syscall)
-{
- return sys_ni_syscall();
-}
-
#define __SYSCALL_64(nr, sym, qual) extern asmlinkage long sym(const struct pt_regs *);
#define __SYSCALL_X32(nr, sym, qual) __SYSCALL_64(nr, sym, qual)
#include <asm/syscalls_64.h>
diff --git a/arch/x86/entry/syscalls/syscall_32.tbl b/arch/x86/entry/syscalls/syscall_32.tbl
index f06f0d1b1282..07313a5b27e7 100644
--- a/arch/x86/entry/syscalls/syscall_32.tbl
+++ b/arch/x86/entry/syscalls/syscall_32.tbl
@@ -11,434 +11,434 @@
#
# The abi is always "i386" for this file.
#
-0 i386 restart_syscall sys_restart_syscall __ia32_sys_restart_syscall
-1 i386 exit sys_exit __ia32_sys_exit
-2 i386 fork sys_fork __ia32_sys_fork
-3 i386 read sys_read __ia32_sys_read
-4 i386 write sys_write __ia32_sys_write
-5 i386 open sys_open __ia32_compat_sys_open
-6 i386 close sys_close __ia32_sys_close
-7 i386 waitpid sys_waitpid __ia32_sys_waitpid
-8 i386 creat sys_creat __ia32_sys_creat
-9 i386 link sys_link __ia32_sys_link
-10 i386 unlink sys_unlink __ia32_sys_unlink
-11 i386 execve sys_execve __ia32_compat_sys_execve
-12 i386 chdir sys_chdir __ia32_sys_chdir
-13 i386 time sys_time32 __ia32_sys_time32
-14 i386 mknod sys_mknod __ia32_sys_mknod
-15 i386 chmod sys_chmod __ia32_sys_chmod
-16 i386 lchown sys_lchown16 __ia32_sys_lchown16
+0 i386 restart_syscall __ia32_sys_restart_syscall
+1 i386 exit __ia32_sys_exit
+2 i386 fork __ia32_sys_fork
+3 i386 read __ia32_sys_read
+4 i386 write __ia32_sys_write
+5 i386 open __ia32_sys_open __ia32_compat_sys_open
+6 i386 close __ia32_sys_close
+7 i386 waitpid __ia32_sys_waitpid
+8 i386 creat __ia32_sys_creat
+9 i386 link __ia32_sys_link
+10 i386 unlink __ia32_sys_unlink
+11 i386 execve __ia32_sys_execve __ia32_compat_sys_execve
+12 i386 chdir __ia32_sys_chdir
+13 i386 time __ia32_sys_time32
+14 i386 mknod __ia32_sys_mknod
+15 i386 chmod __ia32_sys_chmod
+16 i386 lchown __ia32_sys_lchown16
17 i386 break
-18 i386 oldstat sys_stat __ia32_sys_stat
-19 i386 lseek sys_lseek __ia32_compat_sys_lseek
-20 i386 getpid sys_getpid __ia32_sys_getpid
-21 i386 mount sys_mount __ia32_compat_sys_mount
-22 i386 umount sys_oldumount __ia32_sys_oldumount
-23 i386 setuid sys_setuid16 __ia32_sys_setuid16
-24 i386 getuid sys_getuid16 __ia32_sys_getuid16
-25 i386 stime sys_stime32 __ia32_sys_stime32
-26 i386 ptrace sys_ptrace __ia32_compat_sys_ptrace
-27 i386 alarm sys_alarm __ia32_sys_alarm
-28 i386 oldfstat sys_fstat __ia32_sys_fstat
-29 i386 pause sys_pause __ia32_sys_pause
-30 i386 utime sys_utime32 __ia32_sys_utime32
+18 i386 oldstat __ia32_sys_stat
+19 i386 lseek __ia32_sys_lseek __ia32_compat_sys_lseek
+20 i386 getpid __ia32_sys_getpid
+21 i386 mount __ia32_sys_mount __ia32_compat_sys_mount
+22 i386 umount __ia32_sys_oldumount
+23 i386 setuid __ia32_sys_setuid16
+24 i386 getuid __ia32_sys_getuid16
+25 i386 stime __ia32_sys_stime32
+26 i386 ptrace __ia32_sys_ptrace __ia32_compat_sys_ptrace
+27 i386 alarm __ia32_sys_alarm
+28 i386 oldfstat __ia32_sys_fstat
+29 i386 pause __ia32_sys_pause
+30 i386 utime __ia32_sys_utime32
31 i386 stty
32 i386 gtty
-33 i386 access sys_access __ia32_sys_access
-34 i386 nice sys_nice __ia32_sys_nice
+33 i386 access __ia32_sys_access
+34 i386 nice __ia32_sys_nice
35 i386 ftime
-36 i386 sync sys_sync __ia32_sys_sync
-37 i386 kill sys_kill __ia32_sys_kill
-38 i386 rename sys_rename __ia32_sys_rename
-39 i386 mkdir sys_mkdir __ia32_sys_mkdir
-40 i386 rmdir sys_rmdir __ia32_sys_rmdir
-41 i386 dup sys_dup __ia32_sys_dup
-42 i386 pipe sys_pipe __ia32_sys_pipe
-43 i386 times sys_times __ia32_compat_sys_times
+36 i386 sync __ia32_sys_sync
+37 i386 kill __ia32_sys_kill
+38 i386 rename __ia32_sys_rename
+39 i386 mkdir __ia32_sys_mkdir
+40 i386 rmdir __ia32_sys_rmdir
+41 i386 dup __ia32_sys_dup
+42 i386 pipe __ia32_sys_pipe
+43 i386 times __ia32_sys_times __ia32_compat_sys_times
44 i386 prof
-45 i386 brk sys_brk __ia32_sys_brk
-46 i386 setgid sys_setgid16 __ia32_sys_setgid16
-47 i386 getgid sys_getgid16 __ia32_sys_getgid16
-48 i386 signal sys_signal __ia32_sys_signal
-49 i386 geteuid sys_geteuid16 __ia32_sys_geteuid16
-50 i386 getegid sys_getegid16 __ia32_sys_getegid16
-51 i386 acct sys_acct __ia32_sys_acct
-52 i386 umount2 sys_umount __ia32_sys_umount
+45 i386 brk __ia32_sys_brk
+46 i386 setgid __ia32_sys_setgid16
+47 i386 getgid __ia32_sys_getgid16
+48 i386 signal __ia32_sys_signal
+49 i386 geteuid __ia32_sys_geteuid16
+50 i386 getegid __ia32_sys_getegid16
+51 i386 acct __ia32_sys_acct
+52 i386 umount2 __ia32_sys_umount
53 i386 lock
-54 i386 ioctl sys_ioctl __ia32_compat_sys_ioctl
-55 i386 fcntl sys_fcntl __ia32_compat_sys_fcntl64
+54 i386 ioctl __ia32_sys_ioctl __ia32_compat_sys_ioctl
+55 i386 fcntl __ia32_sys_fcntl __ia32_compat_sys_fcntl64
56 i386 mpx
-57 i386 setpgid sys_setpgid __ia32_sys_setpgid
+57 i386 setpgid __ia32_sys_setpgid
58 i386 ulimit
-59 i386 oldolduname sys_olduname __ia32_sys_olduname
-60 i386 umask sys_umask __ia32_sys_umask
-61 i386 chroot sys_chroot __ia32_sys_chroot
-62 i386 ustat sys_ustat __ia32_compat_sys_ustat
-63 i386 dup2 sys_dup2 __ia32_sys_dup2
-64 i386 getppid sys_getppid __ia32_sys_getppid
-65 i386 getpgrp sys_getpgrp __ia32_sys_getpgrp
-66 i386 setsid sys_setsid __ia32_sys_setsid
-67 i386 sigaction sys_sigaction __ia32_compat_sys_sigaction
-68 i386 sgetmask sys_sgetmask __ia32_sys_sgetmask
-69 i386 ssetmask sys_ssetmask __ia32_sys_ssetmask
-70 i386 setreuid sys_setreuid16 __ia32_sys_setreuid16
-71 i386 setregid sys_setregid16 __ia32_sys_setregid16
-72 i386 sigsuspend sys_sigsuspend __ia32_sys_sigsuspend
-73 i386 sigpending sys_sigpending __ia32_compat_sys_sigpending
-74 i386 sethostname sys_sethostname __ia32_sys_sethostname
-75 i386 setrlimit sys_setrlimit __ia32_compat_sys_setrlimit
-76 i386 getrlimit sys_old_getrlimit __ia32_compat_sys_old_getrlimit
-77 i386 getrusage sys_getrusage __ia32_compat_sys_getrusage
-78 i386 gettimeofday sys_gettimeofday __ia32_compat_sys_gettimeofday
-79 i386 settimeofday sys_settimeofday __ia32_compat_sys_settimeofday
-80 i386 getgroups sys_getgroups16 __ia32_sys_getgroups16
-81 i386 setgroups sys_setgroups16 __ia32_sys_setgroups16
-82 i386 select sys_old_select __ia32_compat_sys_old_select
-83 i386 symlink sys_symlink __ia32_sys_symlink
-84 i386 oldlstat sys_lstat __ia32_sys_lstat
-85 i386 readlink sys_readlink __ia32_sys_readlink
-86 i386 uselib sys_uselib __ia32_sys_uselib
-87 i386 swapon sys_swapon __ia32_sys_swapon
-88 i386 reboot sys_reboot __ia32_sys_reboot
-89 i386 readdir sys_old_readdir __ia32_compat_sys_old_readdir
-90 i386 mmap sys_old_mmap __ia32_compat_sys_x86_mmap
-91 i386 munmap sys_munmap __ia32_sys_munmap
-92 i386 truncate sys_truncate __ia32_compat_sys_truncate
-93 i386 ftruncate sys_ftruncate __ia32_compat_sys_ftruncate
-94 i386 fchmod sys_fchmod __ia32_sys_fchmod
-95 i386 fchown sys_fchown16 __ia32_sys_fchown16
-96 i386 getpriority sys_getpriority __ia32_sys_getpriority
-97 i386 setpriority sys_setpriority __ia32_sys_setpriority
+59 i386 oldolduname __ia32_sys_olduname
+60 i386 umask __ia32_sys_umask
+61 i386 chroot __ia32_sys_chroot
+62 i386 ustat __ia32_sys_ustat __ia32_compat_sys_ustat
+63 i386 dup2 __ia32_sys_dup2
+64 i386 getppid __ia32_sys_getppid
+65 i386 getpgrp __ia32_sys_getpgrp
+66 i386 setsid __ia32_sys_setsid
+67 i386 sigaction __ia32_sys_sigaction __ia32_compat_sys_sigaction
+68 i386 sgetmask __ia32_sys_sgetmask
+69 i386 ssetmask __ia32_sys_ssetmask
+70 i386 setreuid __ia32_sys_setreuid16
+71 i386 setregid __ia32_sys_setregid16
+72 i386 sigsuspend __ia32_sys_sigsuspend
+73 i386 sigpending __ia32_sys_sigpending __ia32_compat_sys_sigpending
+74 i386 sethostname __ia32_sys_sethostname
+75 i386 setrlimit __ia32_sys_setrlimit __ia32_compat_sys_setrlimit
+76 i386 getrlimit __ia32_sys_old_getrlimit __ia32_compat_sys_old_getrlimit
+77 i386 getrusage __ia32_sys_getrusage __ia32_compat_sys_getrusage
+78 i386 gettimeofday __ia32_sys_gettimeofday __ia32_compat_sys_gettimeofday
+79 i386 settimeofday __ia32_sys_settimeofday __ia32_compat_sys_settimeofday
+80 i386 getgroups __ia32_sys_getgroups16
+81 i386 setgroups __ia32_sys_setgroups16
+82 i386 select __ia32_sys_old_select __ia32_compat_sys_old_select
+83 i386 symlink __ia32_sys_symlink
+84 i386 oldlstat __ia32_sys_lstat
+85 i386 readlink __ia32_sys_readlink
+86 i386 uselib __ia32_sys_uselib
+87 i386 swapon __ia32_sys_swapon
+88 i386 reboot __ia32_sys_reboot
+89 i386 readdir __ia32_sys_old_readdir __ia32_compat_sys_old_readdir
+90 i386 mmap __ia32_sys_old_mmap __ia32_compat_sys_x86_mmap
+91 i386 munmap __ia32_sys_munmap
+92 i386 truncate __ia32_sys_truncate __ia32_compat_sys_truncate
+93 i386 ftruncate __ia32_sys_ftruncate __ia32_compat_sys_ftruncate
+94 i386 fchmod __ia32_sys_fchmod
+95 i386 fchown __ia32_sys_fchown16
+96 i386 getpriority __ia32_sys_getpriority
+97 i386 setpriority __ia32_sys_setpriority
98 i386 profil
-99 i386 statfs sys_statfs __ia32_compat_sys_statfs
-100 i386 fstatfs sys_fstatfs __ia32_compat_sys_fstatfs
-101 i386 ioperm sys_ioperm __ia32_sys_ioperm
-102 i386 socketcall sys_socketcall __ia32_compat_sys_socketcall
-103 i386 syslog sys_syslog __ia32_sys_syslog
-104 i386 setitimer sys_setitimer __ia32_compat_sys_setitimer
-105 i386 getitimer sys_getitimer __ia32_compat_sys_getitimer
-106 i386 stat sys_newstat __ia32_compat_sys_newstat
-107 i386 lstat sys_newlstat __ia32_compat_sys_newlstat
-108 i386 fstat sys_newfstat __ia32_compat_sys_newfstat
-109 i386 olduname sys_uname __ia32_sys_uname
-110 i386 iopl sys_iopl __ia32_sys_iopl
-111 i386 vhangup sys_vhangup __ia32_sys_vhangup
+99 i386 statfs __ia32_sys_statfs __ia32_compat_sys_statfs
+100 i386 fstatfs __ia32_sys_fstatfs __ia32_compat_sys_fstatfs
+101 i386 ioperm __ia32_sys_ioperm
+102 i386 socketcall __ia32_sys_socketcall __ia32_compat_sys_socketcall
+103 i386 syslog __ia32_sys_syslog
+104 i386 setitimer __ia32_sys_setitimer __ia32_compat_sys_setitimer
+105 i386 getitimer __ia32_sys_getitimer __ia32_compat_sys_getitimer
+106 i386 stat __ia32_sys_newstat __ia32_compat_sys_newstat
+107 i386 lstat __ia32_sys_newlstat __ia32_compat_sys_newlstat
+108 i386 fstat __ia32_sys_newfstat __ia32_compat_sys_newfstat
+109 i386 olduname __ia32_sys_uname
+110 i386 iopl __ia32_sys_iopl
+111 i386 vhangup __ia32_sys_vhangup
112 i386 idle
-113 i386 vm86old sys_vm86old __ia32_sys_ni_syscall
-114 i386 wait4 sys_wait4 __ia32_compat_sys_wait4
-115 i386 swapoff sys_swapoff __ia32_sys_swapoff
-116 i386 sysinfo sys_sysinfo __ia32_compat_sys_sysinfo
-117 i386 ipc sys_ipc __ia32_compat_sys_ipc
-118 i386 fsync sys_fsync __ia32_sys_fsync
-119 i386 sigreturn sys_sigreturn __ia32_compat_sys_sigreturn
-120 i386 clone sys_clone __ia32_compat_sys_x86_clone
-121 i386 setdomainname sys_setdomainname __ia32_sys_setdomainname
-122 i386 uname sys_newuname __ia32_sys_newuname
-123 i386 modify_ldt sys_modify_ldt __ia32_sys_modify_ldt
-124 i386 adjtimex sys_adjtimex_time32 __ia32_sys_adjtimex_time32
-125 i386 mprotect sys_mprotect __ia32_sys_mprotect
-126 i386 sigprocmask sys_sigprocmask __ia32_compat_sys_sigprocmask
+113 i386 vm86old __ia32_sys_vm86old __ia32_sys_ni_syscall
+114 i386 wait4 __ia32_sys_wait4 __ia32_compat_sys_wait4
+115 i386 swapoff __ia32_sys_swapoff
+116 i386 sysinfo __ia32_sys_sysinfo __ia32_compat_sys_sysinfo
+117 i386 ipc __ia32_sys_ipc __ia32_compat_sys_ipc
+118 i386 fsync __ia32_sys_fsync
+119 i386 sigreturn __ia32_sys_sigreturn __ia32_compat_sys_sigreturn
+120 i386 clone __ia32_sys_clone __ia32_compat_sys_x86_clone
+121 i386 setdomainname __ia32_sys_setdomainname
+122 i386 uname __ia32_sys_newuname
+123 i386 modify_ldt __ia32_sys_modify_ldt
+124 i386 adjtimex __ia32_sys_adjtimex_time32
+125 i386 mprotect __ia32_sys_mprotect
+126 i386 sigprocmask __ia32_sys_sigprocmask __ia32_compat_sys_sigprocmask
127 i386 create_module
-128 i386 init_module sys_init_module __ia32_sys_init_module
-129 i386 delete_module sys_delete_module __ia32_sys_delete_module
+128 i386 init_module __ia32_sys_init_module
+129 i386 delete_module __ia32_sys_delete_module
130 i386 get_kernel_syms
-131 i386 quotactl sys_quotactl __ia32_compat_sys_quotactl32
-132 i386 getpgid sys_getpgid __ia32_sys_getpgid
-133 i386 fchdir sys_fchdir __ia32_sys_fchdir
-134 i386 bdflush sys_bdflush __ia32_sys_bdflush
-135 i386 sysfs sys_sysfs __ia32_sys_sysfs
-136 i386 personality sys_personality __ia32_sys_personality
+131 i386 quotactl __ia32_sys_quotactl __ia32_compat_sys_quotactl32
+132 i386 getpgid __ia32_sys_getpgid
+133 i386 fchdir __ia32_sys_fchdir
+134 i386 bdflush __ia32_sys_bdflush
+135 i386 sysfs __ia32_sys_sysfs
+136 i386 personality __ia32_sys_personality
137 i386 afs_syscall
-138 i386 setfsuid sys_setfsuid16 __ia32_sys_setfsuid16
-139 i386 setfsgid sys_setfsgid16 __ia32_sys_setfsgid16
-140 i386 _llseek sys_llseek __ia32_sys_llseek
-141 i386 getdents sys_getdents __ia32_compat_sys_getdents
-142 i386 _newselect sys_select __ia32_compat_sys_select
-143 i386 flock sys_flock __ia32_sys_flock
-144 i386 msync sys_msync __ia32_sys_msync
-145 i386 readv sys_readv __ia32_compat_sys_readv
-146 i386 writev sys_writev __ia32_compat_sys_writev
-147 i386 getsid sys_getsid __ia32_sys_getsid
-148 i386 fdatasync sys_fdatasync __ia32_sys_fdatasync
-149 i386 _sysctl sys_sysctl __ia32_compat_sys_sysctl
-150 i386 mlock sys_mlock __ia32_sys_mlock
-151 i386 munlock sys_munlock __ia32_sys_munlock
-152 i386 mlockall sys_mlockall __ia32_sys_mlockall
-153 i386 munlockall sys_munlockall __ia32_sys_munlockall
-154 i386 sched_setparam sys_sched_setparam __ia32_sys_sched_setparam
-155 i386 sched_getparam sys_sched_getparam __ia32_sys_sched_getparam
-156 i386 sched_setscheduler sys_sched_setscheduler __ia32_sys_sched_setscheduler
-157 i386 sched_getscheduler sys_sched_getscheduler __ia32_sys_sched_getscheduler
-158 i386 sched_yield sys_sched_yield __ia32_sys_sched_yield
-159 i386 sched_get_priority_max sys_sched_get_priority_max __ia32_sys_sched_get_priority_max
-160 i386 sched_get_priority_min sys_sched_get_priority_min __ia32_sys_sched_get_priority_min
-161 i386 sched_rr_get_interval sys_sched_rr_get_interval_time32 __ia32_sys_sched_rr_get_interval_time32
-162 i386 nanosleep sys_nanosleep_time32 __ia32_sys_nanosleep_time32
-163 i386 mremap sys_mremap __ia32_sys_mremap
-164 i386 setresuid sys_setresuid16 __ia32_sys_setresuid16
-165 i386 getresuid sys_getresuid16 __ia32_sys_getresuid16
-166 i386 vm86 sys_vm86 __ia32_sys_ni_syscall
+138 i386 setfsuid __ia32_sys_setfsuid16
+139 i386 setfsgid __ia32_sys_setfsgid16
+140 i386 _llseek __ia32_sys_llseek
+141 i386 getdents __ia32_sys_getdents __ia32_compat_sys_getdents
+142 i386 _newselect __ia32_sys_select __ia32_compat_sys_select
+143 i386 flock __ia32_sys_flock
+144 i386 msync __ia32_sys_msync
+145 i386 readv __ia32_sys_readv __ia32_compat_sys_readv
+146 i386 writev __ia32_sys_writev __ia32_compat_sys_writev
+147 i386 getsid __ia32_sys_getsid
+148 i386 fdatasync __ia32_sys_fdatasync
+149 i386 _sysctl __ia32_sys_sysctl __ia32_compat_sys_sysctl
+150 i386 mlock __ia32_sys_mlock
+151 i386 munlock __ia32_sys_munlock
+152 i386 mlockall __ia32_sys_mlockall
+153 i386 munlockall __ia32_sys_munlockall
+154 i386 sched_setparam __ia32_sys_sched_setparam
+155 i386 sched_getparam __ia32_sys_sched_getparam
+156 i386 sched_setscheduler __ia32_sys_sched_setscheduler
+157 i386 sched_getscheduler __ia32_sys_sched_getscheduler
+158 i386 sched_yield __ia32_sys_sched_yield
+159 i386 sched_get_priority_max __ia32_sys_sched_get_priority_max
+160 i386 sched_get_priority_min __ia32_sys_sched_get_priority_min
+161 i386 sched_rr_get_interval __ia32_sys_sched_rr_get_interval_time32
+162 i386 nanosleep __ia32_sys_nanosleep_time32
+163 i386 mremap __ia32_sys_mremap
+164 i386 setresuid __ia32_sys_setresuid16
+165 i386 getresuid __ia32_sys_getresuid16
+166 i386 vm86 __ia32_sys_vm86 __ia32_sys_ni_syscall
167 i386 query_module
-168 i386 poll sys_poll __ia32_sys_poll
+168 i386 poll __ia32_sys_poll
169 i386 nfsservctl
-170 i386 setresgid sys_setresgid16 __ia32_sys_setresgid16
-171 i386 getresgid sys_getresgid16 __ia32_sys_getresgid16
-172 i386 prctl sys_prctl __ia32_sys_prctl
-173 i386 rt_sigreturn sys_rt_sigreturn __ia32_compat_sys_rt_sigreturn
-174 i386 rt_sigaction sys_rt_sigaction __ia32_compat_sys_rt_sigaction
-175 i386 rt_sigprocmask sys_rt_sigprocmask __ia32_compat_sys_rt_sigprocmask
-176 i386 rt_sigpending sys_rt_sigpending __ia32_compat_sys_rt_sigpending
-177 i386 rt_sigtimedwait sys_rt_sigtimedwait_time32 __ia32_compat_sys_rt_sigtimedwait_time32
-178 i386 rt_sigqueueinfo sys_rt_sigqueueinfo __ia32_compat_sys_rt_sigqueueinfo
-179 i386 rt_sigsuspend sys_rt_sigsuspend __ia32_compat_sys_rt_sigsuspend
-180 i386 pread64 sys_x86_pread __ia32_sys_x86_pread
-181 i386 pwrite64 sys_x86_pwrite __ia32_sys_x86_pwrite
-182 i386 chown sys_chown16 __ia32_sys_chown16
-183 i386 getcwd sys_getcwd __ia32_sys_getcwd
-184 i386 capget sys_capget __ia32_sys_capget
-185 i386 capset sys_capset __ia32_sys_capset
-186 i386 sigaltstack sys_sigaltstack __ia32_compat_sys_sigaltstack
-187 i386 sendfile sys_sendfile __ia32_compat_sys_sendfile
+170 i386 setresgid __ia32_sys_setresgid16
+171 i386 getresgid __ia32_sys_getresgid16
+172 i386 prctl __ia32_sys_prctl
+173 i386 rt_sigreturn __ia32_sys_rt_sigreturn __ia32_compat_sys_rt_sigreturn
+174 i386 rt_sigaction __ia32_sys_rt_sigaction __ia32_compat_sys_rt_sigaction
+175 i386 rt_sigprocmask __ia32_sys_rt_sigprocmask __ia32_compat_sys_rt_sigprocmask
+176 i386 rt_sigpending __ia32_sys_rt_sigpending __ia32_compat_sys_rt_sigpending
+177 i386 rt_sigtimedwait __ia32_sys_rt_sigtimedwait_time32 __ia32_compat_sys_rt_sigtimedwait_time32
+178 i386 rt_sigqueueinfo __ia32_sys_rt_sigqueueinfo __ia32_compat_sys_rt_sigqueueinfo
+179 i386 rt_sigsuspend __ia32_sys_rt_sigsuspend __ia32_compat_sys_rt_sigsuspend
+180 i386 pread64 __ia32_sys_x86_pread
+181 i386 pwrite64 __ia32_sys_x86_pwrite
+182 i386 chown __ia32_sys_chown16
+183 i386 getcwd __ia32_sys_getcwd
+184 i386 capget __ia32_sys_capget
+185 i386 capset __ia32_sys_capset
+186 i386 sigaltstack __ia32_sys_sigaltstack __ia32_compat_sys_sigaltstack
+187 i386 sendfile __ia32_sys_sendfile __ia32_compat_sys_sendfile
188 i386 getpmsg
189 i386 putpmsg
-190 i386 vfork sys_vfork __ia32_sys_vfork
-191 i386 ugetrlimit sys_getrlimit __ia32_compat_sys_getrlimit
-192 i386 mmap2 sys_mmap_pgoff __ia32_sys_mmap_pgoff
-193 i386 truncate64 sys_x86_truncate64 __ia32_sys_x86_truncate64
-194 i386 ftruncate64 sys_x86_ftruncate64 __ia32_sys_x86_ftruncate64
-195 i386 stat64 sys_stat64 __ia32_compat_sys_x86_stat64
-196 i386 lstat64 sys_lstat64 __ia32_compat_sys_x86_lstat64
-197 i386 fstat64 sys_fstat64 __ia32_compat_sys_x86_fstat64
-198 i386 lchown32 sys_lchown __ia32_sys_lchown
-199 i386 getuid32 sys_getuid __ia32_sys_getuid
-200 i386 getgid32 sys_getgid __ia32_sys_getgid
-201 i386 geteuid32 sys_geteuid __ia32_sys_geteuid
-202 i386 getegid32 sys_getegid __ia32_sys_getegid
-203 i386 setreuid32 sys_setreuid __ia32_sys_setreuid
-204 i386 setregid32 sys_setregid __ia32_sys_setregid
-205 i386 getgroups32 sys_getgroups __ia32_sys_getgroups
-206 i386 setgroups32 sys_setgroups __ia32_sys_setgroups
-207 i386 fchown32 sys_fchown __ia32_sys_fchown
-208 i386 setresuid32 sys_setresuid __ia32_sys_setresuid
-209 i386 getresuid32 sys_getresuid __ia32_sys_getresuid
-210 i386 setresgid32 sys_setresgid __ia32_sys_setresgid
-211 i386 getresgid32 sys_getresgid __ia32_sys_getresgid
-212 i386 chown32 sys_chown __ia32_sys_chown
-213 i386 setuid32 sys_setuid __ia32_sys_setuid
-214 i386 setgid32 sys_setgid __ia32_sys_setgid
-215 i386 setfsuid32 sys_setfsuid __ia32_sys_setfsuid
-216 i386 setfsgid32 sys_setfsgid __ia32_sys_setfsgid
-217 i386 pivot_root sys_pivot_root __ia32_sys_pivot_root
-218 i386 mincore sys_mincore __ia32_sys_mincore
-219 i386 madvise sys_madvise __ia32_sys_madvise
-220 i386 getdents64 sys_getdents64 __ia32_sys_getdents64
-221 i386 fcntl64 sys_fcntl64 __ia32_compat_sys_fcntl64
+190 i386 vfork __ia32_sys_vfork
+191 i386 ugetrlimit __ia32_sys_getrlimit __ia32_compat_sys_getrlimit
+192 i386 mmap2 __ia32_sys_mmap_pgoff
+193 i386 truncate64 __ia32_sys_x86_truncate64
+194 i386 ftruncate64 __ia32_sys_x86_ftruncate64
+195 i386 stat64 __ia32_sys_stat64 __ia32_compat_sys_x86_stat64
+196 i386 lstat64 __ia32_sys_lstat64 __ia32_compat_sys_x86_lstat64
+197 i386 fstat64 __ia32_sys_fstat64 __ia32_compat_sys_x86_fstat64
+198 i386 lchown32 __ia32_sys_lchown
+199 i386 getuid32 __ia32_sys_getuid
+200 i386 getgid32 __ia32_sys_getgid
+201 i386 geteuid32 __ia32_sys_geteuid
+202 i386 getegid32 __ia32_sys_getegid
+203 i386 setreuid32 __ia32_sys_setreuid
+204 i386 setregid32 __ia32_sys_setregid
+205 i386 getgroups32 __ia32_sys_getgroups
+206 i386 setgroups32 __ia32_sys_setgroups
+207 i386 fchown32 __ia32_sys_fchown
+208 i386 setresuid32 __ia32_sys_setresuid
+209 i386 getresuid32 __ia32_sys_getresuid
+210 i386 setresgid32 __ia32_sys_setresgid
+211 i386 getresgid32 __ia32_sys_getresgid
+212 i386 chown32 __ia32_sys_chown
+213 i386 setuid32 __ia32_sys_setuid
+214 i386 setgid32 __ia32_sys_setgid
+215 i386 setfsuid32 __ia32_sys_setfsuid
+216 i386 setfsgid32 __ia32_sys_setfsgid
+217 i386 pivot_root __ia32_sys_pivot_root
+218 i386 mincore __ia32_sys_mincore
+219 i386 madvise __ia32_sys_madvise
+220 i386 getdents64 __ia32_sys_getdents64
+221 i386 fcntl64 __ia32_sys_fcntl64 __ia32_compat_sys_fcntl64
# 222 is unused
# 223 is unused
-224 i386 gettid sys_gettid __ia32_sys_gettid
-225 i386 readahead sys_x86_readahead __ia32_sys_x86_readahead
-226 i386 setxattr sys_setxattr __ia32_sys_setxattr
-227 i386 lsetxattr sys_lsetxattr __ia32_sys_lsetxattr
-228 i386 fsetxattr sys_fsetxattr __ia32_sys_fsetxattr
-229 i386 getxattr sys_getxattr __ia32_sys_getxattr
-230 i386 lgetxattr sys_lgetxattr __ia32_sys_lgetxattr
-231 i386 fgetxattr sys_fgetxattr __ia32_sys_fgetxattr
-232 i386 listxattr sys_listxattr __ia32_sys_listxattr
-233 i386 llistxattr sys_llistxattr __ia32_sys_llistxattr
-234 i386 flistxattr sys_flistxattr __ia32_sys_flistxattr
-235 i386 removexattr sys_removexattr __ia32_sys_removexattr
-236 i386 lremovexattr sys_lremovexattr __ia32_sys_lremovexattr
-237 i386 fremovexattr sys_fremovexattr __ia32_sys_fremovexattr
-238 i386 tkill sys_tkill __ia32_sys_tkill
-239 i386 sendfile64 sys_sendfile64 __ia32_sys_sendfile64
-240 i386 futex sys_futex_time32 __ia32_sys_futex_time32
-241 i386 sched_setaffinity sys_sched_setaffinity __ia32_compat_sys_sched_setaffinity
-242 i386 sched_getaffinity sys_sched_getaffinity __ia32_compat_sys_sched_getaffinity
-243 i386 set_thread_area sys_set_thread_area __ia32_sys_set_thread_area
-244 i386 get_thread_area sys_get_thread_area __ia32_sys_get_thread_area
-245 i386 io_setup sys_io_setup __ia32_compat_sys_io_setup
-246 i386 io_destroy sys_io_destroy __ia32_sys_io_destroy
-247 i386 io_getevents sys_io_getevents_time32 __ia32_sys_io_getevents_time32
-248 i386 io_submit sys_io_submit __ia32_compat_sys_io_submit
-249 i386 io_cancel sys_io_cancel __ia32_sys_io_cancel
-250 i386 fadvise64 sys_x86_fadvise64 __ia32_sys_x86_fadvise64
+224 i386 gettid __ia32_sys_gettid
+225 i386 readahead __ia32_sys_x86_readahead
+226 i386 setxattr __ia32_sys_setxattr
+227 i386 lsetxattr __ia32_sys_lsetxattr
+228 i386 fsetxattr __ia32_sys_fsetxattr
+229 i386 getxattr __ia32_sys_getxattr
+230 i386 lgetxattr __ia32_sys_lgetxattr
+231 i386 fgetxattr __ia32_sys_fgetxattr
+232 i386 listxattr __ia32_sys_listxattr
+233 i386 llistxattr __ia32_sys_llistxattr
+234 i386 flistxattr __ia32_sys_flistxattr
+235 i386 removexattr __ia32_sys_removexattr
+236 i386 lremovexattr __ia32_sys_lremovexattr
+237 i386 fremovexattr __ia32_sys_fremovexattr
+238 i386 tkill __ia32_sys_tkill
+239 i386 sendfile64 __ia32_sys_sendfile64
+240 i386 futex __ia32_sys_futex_time32
+241 i386 sched_setaffinity __ia32_sys_sched_setaffinity __ia32_compat_sys_sched_setaffinity
+242 i386 sched_getaffinity __ia32_sys_sched_getaffinity __ia32_compat_sys_sched_getaffinity
+243 i386 set_thread_area __ia32_sys_set_thread_area
+244 i386 get_thread_area __ia32_sys_get_thread_area
+245 i386 io_setup __ia32_sys_io_setup __ia32_compat_sys_io_setup
+246 i386 io_destroy __ia32_sys_io_destroy
+247 i386 io_getevents __ia32_sys_io_getevents_time32
+248 i386 io_submit __ia32_sys_io_submit __ia32_compat_sys_io_submit
+249 i386 io_cancel __ia32_sys_io_cancel
+250 i386 fadvise64 __ia32_sys_x86_fadvise64
# 251 is available for reuse (was briefly sys_set_zone_reclaim)
-252 i386 exit_group sys_exit_group __ia32_sys_exit_group
-253 i386 lookup_dcookie sys_lookup_dcookie __ia32_compat_sys_lookup_dcookie
-254 i386 epoll_create sys_epoll_create __ia32_sys_epoll_create
-255 i386 epoll_ctl sys_epoll_ctl __ia32_sys_epoll_ctl
-256 i386 epoll_wait sys_epoll_wait __ia32_sys_epoll_wait
-257 i386 remap_file_pages sys_remap_file_pages __ia32_sys_remap_file_pages
-258 i386 set_tid_address sys_set_tid_address __ia32_sys_set_tid_address
-259 i386 timer_create sys_timer_create __ia32_compat_sys_timer_create
-260 i386 timer_settime sys_timer_settime32 __ia32_sys_timer_settime32
-261 i386 timer_gettime sys_timer_gettime32 __ia32_sys_timer_gettime32
-262 i386 timer_getoverrun sys_timer_getoverrun __ia32_sys_timer_getoverrun
-263 i386 timer_delete sys_timer_delete __ia32_sys_timer_delete
-264 i386 clock_settime sys_clock_settime32 __ia32_sys_clock_settime32
-265 i386 clock_gettime sys_clock_gettime32 __ia32_sys_clock_gettime32
-266 i386 clock_getres sys_clock_getres_time32 __ia32_sys_clock_getres_time32
-267 i386 clock_nanosleep sys_clock_nanosleep_time32 __ia32_sys_clock_nanosleep_time32
-268 i386 statfs64 sys_statfs64 __ia32_compat_sys_statfs64
-269 i386 fstatfs64 sys_fstatfs64 __ia32_compat_sys_fstatfs64
-270 i386 tgkill sys_tgkill __ia32_sys_tgkill
-271 i386 utimes sys_utimes_time32 __ia32_sys_utimes_time32
-272 i386 fadvise64_64 sys_x86_fadvise64_64 __ia32_sys_x86_fadvise64_64
+252 i386 exit_group __ia32_sys_exit_group
+253 i386 lookup_dcookie __ia32_sys_lookup_dcookie __ia32_compat_sys_lookup_dcookie
+254 i386 epoll_create __ia32_sys_epoll_create
+255 i386 epoll_ctl __ia32_sys_epoll_ctl
+256 i386 epoll_wait __ia32_sys_epoll_wait
+257 i386 remap_file_pages __ia32_sys_remap_file_pages
+258 i386 set_tid_address __ia32_sys_set_tid_address
+259 i386 timer_create __ia32_sys_timer_create __ia32_compat_sys_timer_create
+260 i386 timer_settime __ia32_sys_timer_settime32
+261 i386 timer_gettime __ia32_sys_timer_gettime32
+262 i386 timer_getoverrun __ia32_sys_timer_getoverrun
+263 i386 timer_delete __ia32_sys_timer_delete
+264 i386 clock_settime __ia32_sys_clock_settime32
+265 i386 clock_gettime __ia32_sys_clock_gettime32
+266 i386 clock_getres __ia32_sys_clock_getres_time32
+267 i386 clock_nanosleep __ia32_sys_clock_nanosleep_time32
+268 i386 statfs64 __ia32_sys_statfs64 __ia32_compat_sys_statfs64
+269 i386 fstatfs64 __ia32_sys_fstatfs64 __ia32_compat_sys_fstatfs64
+270 i386 tgkill __ia32_sys_tgkill
+271 i386 utimes __ia32_sys_utimes_time32
+272 i386 fadvise64_64 __ia32_sys_x86_fadvise64_64
273 i386 vserver
-274 i386 mbind sys_mbind __ia32_sys_mbind
-275 i386 get_mempolicy sys_get_mempolicy __ia32_compat_sys_get_mempolicy
-276 i386 set_mempolicy sys_set_mempolicy __ia32_sys_set_mempolicy
-277 i386 mq_open sys_mq_open __ia32_compat_sys_mq_open
-278 i386 mq_unlink sys_mq_unlink __ia32_sys_mq_unlink
-279 i386 mq_timedsend sys_mq_timedsend_time32 __ia32_sys_mq_timedsend_time32
-280 i386 mq_timedreceive sys_mq_timedreceive_time32 __ia32_sys_mq_timedreceive_time32
-281 i386 mq_notify sys_mq_notify __ia32_compat_sys_mq_notify
-282 i386 mq_getsetattr sys_mq_getsetattr __ia32_compat_sys_mq_getsetattr
-283 i386 kexec_load sys_kexec_load __ia32_compat_sys_kexec_load
-284 i386 waitid sys_waitid __ia32_compat_sys_waitid
+274 i386 mbind __ia32_sys_mbind
+275 i386 get_mempolicy __ia32_sys_get_mempolicy __ia32_compat_sys_get_mempolicy
+276 i386 set_mempolicy __ia32_sys_set_mempolicy
+277 i386 mq_open __ia32_sys_mq_open __ia32_compat_sys_mq_open
+278 i386 mq_unlink __ia32_sys_mq_unlink
+279 i386 mq_timedsend __ia32_sys_mq_timedsend_time32
+280 i386 mq_timedreceive __ia32_sys_mq_timedreceive_time32
+281 i386 mq_notify __ia32_sys_mq_notify __ia32_compat_sys_mq_notify
+282 i386 mq_getsetattr __ia32_sys_mq_getsetattr __ia32_compat_sys_mq_getsetattr
+283 i386 kexec_load __ia32_sys_kexec_load __ia32_compat_sys_kexec_load
+284 i386 waitid __ia32_sys_waitid __ia32_compat_sys_waitid
# 285 sys_setaltroot
-286 i386 add_key sys_add_key __ia32_sys_add_key
-287 i386 request_key sys_request_key __ia32_sys_request_key
-288 i386 keyctl sys_keyctl __ia32_compat_sys_keyctl
-289 i386 ioprio_set sys_ioprio_set __ia32_sys_ioprio_set
-290 i386 ioprio_get sys_ioprio_get __ia32_sys_ioprio_get
-291 i386 inotify_init sys_inotify_init __ia32_sys_inotify_init
-292 i386 inotify_add_watch sys_inotify_add_watch __ia32_sys_inotify_add_watch
-293 i386 inotify_rm_watch sys_inotify_rm_watch __ia32_sys_inotify_rm_watch
-294 i386 migrate_pages sys_migrate_pages __ia32_sys_migrate_pages
-295 i386 openat sys_openat __ia32_compat_sys_openat
-296 i386 mkdirat sys_mkdirat __ia32_sys_mkdirat
-297 i386 mknodat sys_mknodat __ia32_sys_mknodat
-298 i386 fchownat sys_fchownat __ia32_sys_fchownat
-299 i386 futimesat sys_futimesat_time32 __ia32_sys_futimesat_time32
-300 i386 fstatat64 sys_fstatat64 __ia32_compat_sys_x86_fstatat
-301 i386 unlinkat sys_unlinkat __ia32_sys_unlinkat
-302 i386 renameat sys_renameat __ia32_sys_renameat
-303 i386 linkat sys_linkat __ia32_sys_linkat
-304 i386 symlinkat sys_symlinkat __ia32_sys_symlinkat
-305 i386 readlinkat sys_readlinkat __ia32_sys_readlinkat
-306 i386 fchmodat sys_fchmodat __ia32_sys_fchmodat
-307 i386 faccessat sys_faccessat __ia32_sys_faccessat
-308 i386 pselect6 sys_pselect6_time32 __ia32_compat_sys_pselect6_time32
-309 i386 ppoll sys_ppoll_time32 __ia32_compat_sys_ppoll_time32
-310 i386 unshare sys_unshare __ia32_sys_unshare
-311 i386 set_robust_list sys_set_robust_list __ia32_compat_sys_set_robust_list
-312 i386 get_robust_list sys_get_robust_list __ia32_compat_sys_get_robust_list
-313 i386 splice sys_splice __ia32_sys_splice
-314 i386 sync_file_range sys_x86_sync_file_range __ia32_sys_x86_sync_file_range
-315 i386 tee sys_tee __ia32_sys_tee
-316 i386 vmsplice sys_vmsplice __ia32_compat_sys_vmsplice
-317 i386 move_pages sys_move_pages __ia32_compat_sys_move_pages
-318 i386 getcpu sys_getcpu __ia32_sys_getcpu
-319 i386 epoll_pwait sys_epoll_pwait __ia32_sys_epoll_pwait
-320 i386 utimensat sys_utimensat_time32 __ia32_sys_utimensat_time32
-321 i386 signalfd sys_signalfd __ia32_compat_sys_signalfd
-322 i386 timerfd_create sys_timerfd_create __ia32_sys_timerfd_create
-323 i386 eventfd sys_eventfd __ia32_sys_eventfd
-324 i386 fallocate sys_x86_fallocate __ia32_sys_x86_fallocate
-325 i386 timerfd_settime sys_timerfd_settime32 __ia32_sys_timerfd_settime32
-326 i386 timerfd_gettime sys_timerfd_gettime32 __ia32_sys_timerfd_gettime32
-327 i386 signalfd4 sys_signalfd4 __ia32_compat_sys_signalfd4
-328 i386 eventfd2 sys_eventfd2 __ia32_sys_eventfd2
-329 i386 epoll_create1 sys_epoll_create1 __ia32_sys_epoll_create1
-330 i386 dup3 sys_dup3 __ia32_sys_dup3
-331 i386 pipe2 sys_pipe2 __ia32_sys_pipe2
-332 i386 inotify_init1 sys_inotify_init1 __ia32_sys_inotify_init1
-333 i386 preadv sys_preadv __ia32_compat_sys_preadv
-334 i386 pwritev sys_pwritev __ia32_compat_sys_pwritev
-335 i386 rt_tgsigqueueinfo sys_rt_tgsigqueueinfo __ia32_compat_sys_rt_tgsigqueueinfo
-336 i386 perf_event_open sys_perf_event_open __ia32_sys_perf_event_open
-337 i386 recvmmsg sys_recvmmsg_time32 __ia32_compat_sys_recvmmsg_time32
-338 i386 fanotify_init sys_fanotify_init __ia32_sys_fanotify_init
-339 i386 fanotify_mark sys_fanotify_mark __ia32_compat_sys_fanotify_mark
-340 i386 prlimit64 sys_prlimit64 __ia32_sys_prlimit64
-341 i386 name_to_handle_at sys_name_to_handle_at __ia32_sys_name_to_handle_at
-342 i386 open_by_handle_at sys_open_by_handle_at __ia32_compat_sys_open_by_handle_at
-343 i386 clock_adjtime sys_clock_adjtime32 __ia32_sys_clock_adjtime32
-344 i386 syncfs sys_syncfs __ia32_sys_syncfs
-345 i386 sendmmsg sys_sendmmsg __ia32_compat_sys_sendmmsg
-346 i386 setns sys_setns __ia32_sys_setns
-347 i386 process_vm_readv sys_process_vm_readv __ia32_compat_sys_process_vm_readv
-348 i386 process_vm_writev sys_process_vm_writev __ia32_compat_sys_process_vm_writev
-349 i386 kcmp sys_kcmp __ia32_sys_kcmp
-350 i386 finit_module sys_finit_module __ia32_sys_finit_module
-351 i386 sched_setattr sys_sched_setattr __ia32_sys_sched_setattr
-352 i386 sched_getattr sys_sched_getattr __ia32_sys_sched_getattr
-353 i386 renameat2 sys_renameat2 __ia32_sys_renameat2
-354 i386 seccomp sys_seccomp __ia32_sys_seccomp
-355 i386 getrandom sys_getrandom __ia32_sys_getrandom
-356 i386 memfd_create sys_memfd_create __ia32_sys_memfd_create
-357 i386 bpf sys_bpf __ia32_sys_bpf
-358 i386 execveat sys_execveat __ia32_compat_sys_execveat
-359 i386 socket sys_socket __ia32_sys_socket
-360 i386 socketpair sys_socketpair __ia32_sys_socketpair
-361 i386 bind sys_bind __ia32_sys_bind
-362 i386 connect sys_connect __ia32_sys_connect
-363 i386 listen sys_listen __ia32_sys_listen
-364 i386 accept4 sys_accept4 __ia32_sys_accept4
-365 i386 getsockopt sys_getsockopt __ia32_compat_sys_getsockopt
-366 i386 setsockopt sys_setsockopt __ia32_compat_sys_setsockopt
-367 i386 getsockname sys_getsockname __ia32_sys_getsockname
-368 i386 getpeername sys_getpeername __ia32_sys_getpeername
-369 i386 sendto sys_sendto __ia32_sys_sendto
-370 i386 sendmsg sys_sendmsg __ia32_compat_sys_sendmsg
-371 i386 recvfrom sys_recvfrom __ia32_compat_sys_recvfrom
-372 i386 recvmsg sys_recvmsg __ia32_compat_sys_recvmsg
-373 i386 shutdown sys_shutdown __ia32_sys_shutdown
-374 i386 userfaultfd sys_userfaultfd __ia32_sys_userfaultfd
-375 i386 membarrier sys_membarrier __ia32_sys_membarrier
-376 i386 mlock2 sys_mlock2 __ia32_sys_mlock2
-377 i386 copy_file_range sys_copy_file_range __ia32_sys_copy_file_range
-378 i386 preadv2 sys_preadv2 __ia32_compat_sys_preadv2
-379 i386 pwritev2 sys_pwritev2 __ia32_compat_sys_pwritev2
-380 i386 pkey_mprotect sys_pkey_mprotect __ia32_sys_pkey_mprotect
-381 i386 pkey_alloc sys_pkey_alloc __ia32_sys_pkey_alloc
-382 i386 pkey_free sys_pkey_free __ia32_sys_pkey_free
-383 i386 statx sys_statx __ia32_sys_statx
-384 i386 arch_prctl sys_arch_prctl __ia32_compat_sys_arch_prctl
-385 i386 io_pgetevents sys_io_pgetevents_time32 __ia32_compat_sys_io_pgetevents
-386 i386 rseq sys_rseq __ia32_sys_rseq
-393 i386 semget sys_semget __ia32_sys_semget
-394 i386 semctl sys_semctl __ia32_compat_sys_semctl
-395 i386 shmget sys_shmget __ia32_sys_shmget
-396 i386 shmctl sys_shmctl __ia32_compat_sys_shmctl
-397 i386 shmat sys_shmat __ia32_compat_sys_shmat
-398 i386 shmdt sys_shmdt __ia32_sys_shmdt
-399 i386 msgget sys_msgget __ia32_sys_msgget
-400 i386 msgsnd sys_msgsnd __ia32_compat_sys_msgsnd
-401 i386 msgrcv sys_msgrcv __ia32_compat_sys_msgrcv
-402 i386 msgctl sys_msgctl __ia32_compat_sys_msgctl
-403 i386 clock_gettime64 sys_clock_gettime __ia32_sys_clock_gettime
-404 i386 clock_settime64 sys_clock_settime __ia32_sys_clock_settime
-405 i386 clock_adjtime64 sys_clock_adjtime __ia32_sys_clock_adjtime
-406 i386 clock_getres_time64 sys_clock_getres __ia32_sys_clock_getres
-407 i386 clock_nanosleep_time64 sys_clock_nanosleep __ia32_sys_clock_nanosleep
-408 i386 timer_gettime64 sys_timer_gettime __ia32_sys_timer_gettime
-409 i386 timer_settime64 sys_timer_settime __ia32_sys_timer_settime
-410 i386 timerfd_gettime64 sys_timerfd_gettime __ia32_sys_timerfd_gettime
-411 i386 timerfd_settime64 sys_timerfd_settime __ia32_sys_timerfd_settime
-412 i386 utimensat_time64 sys_utimensat __ia32_sys_utimensat
-413 i386 pselect6_time64 sys_pselect6 __ia32_compat_sys_pselect6_time64
-414 i386 ppoll_time64 sys_ppoll __ia32_compat_sys_ppoll_time64
-416 i386 io_pgetevents_time64 sys_io_pgetevents __ia32_sys_io_pgetevents
-417 i386 recvmmsg_time64 sys_recvmmsg __ia32_compat_sys_recvmmsg_time64
-418 i386 mq_timedsend_time64 sys_mq_timedsend __ia32_sys_mq_timedsend
-419 i386 mq_timedreceive_time64 sys_mq_timedreceive __ia32_sys_mq_timedreceive
-420 i386 semtimedop_time64 sys_semtimedop __ia32_sys_semtimedop
-421 i386 rt_sigtimedwait_time64 sys_rt_sigtimedwait __ia32_compat_sys_rt_sigtimedwait_time64
-422 i386 futex_time64 sys_futex __ia32_sys_futex
-423 i386 sched_rr_get_interval_time64 sys_sched_rr_get_interval __ia32_sys_sched_rr_get_interval
-424 i386 pidfd_send_signal sys_pidfd_send_signal __ia32_sys_pidfd_send_signal
-425 i386 io_uring_setup sys_io_uring_setup __ia32_sys_io_uring_setup
-426 i386 io_uring_enter sys_io_uring_enter __ia32_sys_io_uring_enter
-427 i386 io_uring_register sys_io_uring_register __ia32_sys_io_uring_register
-428 i386 open_tree sys_open_tree __ia32_sys_open_tree
-429 i386 move_mount sys_move_mount __ia32_sys_move_mount
-430 i386 fsopen sys_fsopen __ia32_sys_fsopen
-431 i386 fsconfig sys_fsconfig __ia32_sys_fsconfig
-432 i386 fsmount sys_fsmount __ia32_sys_fsmount
-433 i386 fspick sys_fspick __ia32_sys_fspick
-434 i386 pidfd_open sys_pidfd_open __ia32_sys_pidfd_open
-435 i386 clone3 sys_clone3 __ia32_sys_clone3
-437 i386 openat2 sys_openat2 __ia32_sys_openat2
-438 i386 pidfd_getfd sys_pidfd_getfd __ia32_sys_pidfd_getfd
+286 i386 add_key __ia32_sys_add_key
+287 i386 request_key __ia32_sys_request_key
+288 i386 keyctl __ia32_sys_keyctl __ia32_compat_sys_keyctl
+289 i386 ioprio_set __ia32_sys_ioprio_set
+290 i386 ioprio_get __ia32_sys_ioprio_get
+291 i386 inotify_init __ia32_sys_inotify_init
+292 i386 inotify_add_watch __ia32_sys_inotify_add_watch
+293 i386 inotify_rm_watch __ia32_sys_inotify_rm_watch
+294 i386 migrate_pages __ia32_sys_migrate_pages
+295 i386 openat __ia32_sys_openat __ia32_compat_sys_openat
+296 i386 mkdirat __ia32_sys_mkdirat
+297 i386 mknodat __ia32_sys_mknodat
+298 i386 fchownat __ia32_sys_fchownat
+299 i386 futimesat __ia32_sys_futimesat_time32
+300 i386 fstatat64 __ia32_sys_fstatat64 __ia32_compat_sys_x86_fstatat
+301 i386 unlinkat __ia32_sys_unlinkat
+302 i386 renameat __ia32_sys_renameat
+303 i386 linkat __ia32_sys_linkat
+304 i386 symlinkat __ia32_sys_symlinkat
+305 i386 readlinkat __ia32_sys_readlinkat
+306 i386 fchmodat __ia32_sys_fchmodat
+307 i386 faccessat __ia32_sys_faccessat
+308 i386 pselect6 __ia32_sys_pselect6_time32 __ia32_compat_sys_pselect6_time32
+309 i386 ppoll __ia32_sys_ppoll_time32 __ia32_compat_sys_ppoll_time32
+310 i386 unshare __ia32_sys_unshare
+311 i386 set_robust_list __ia32_sys_set_robust_list __ia32_compat_sys_set_robust_list
+312 i386 get_robust_list __ia32_sys_get_robust_list __ia32_compat_sys_get_robust_list
+313 i386 splice __ia32_sys_splice
+314 i386 sync_file_range __ia32_sys_x86_sync_file_range
+315 i386 tee __ia32_sys_tee
+316 i386 vmsplice __ia32_sys_vmsplice __ia32_compat_sys_vmsplice
+317 i386 move_pages __ia32_sys_move_pages __ia32_compat_sys_move_pages
+318 i386 getcpu __ia32_sys_getcpu
+319 i386 epoll_pwait __ia32_sys_epoll_pwait
+320 i386 utimensat __ia32_sys_utimensat_time32
+321 i386 signalfd __ia32_sys_signalfd __ia32_compat_sys_signalfd
+322 i386 timerfd_create __ia32_sys_timerfd_create
+323 i386 eventfd __ia32_sys_eventfd
+324 i386 fallocate __ia32_sys_x86_fallocate
+325 i386 timerfd_settime __ia32_sys_timerfd_settime32
+326 i386 timerfd_gettime __ia32_sys_timerfd_gettime32
+327 i386 signalfd4 __ia32_sys_signalfd4 __ia32_compat_sys_signalfd4
+328 i386 eventfd2 __ia32_sys_eventfd2
+329 i386 epoll_create1 __ia32_sys_epoll_create1
+330 i386 dup3 __ia32_sys_dup3
+331 i386 pipe2 __ia32_sys_pipe2
+332 i386 inotify_init1 __ia32_sys_inotify_init1
+333 i386 preadv __ia32_sys_preadv __ia32_compat_sys_preadv
+334 i386 pwritev __ia32_sys_pwritev __ia32_compat_sys_pwritev
+335 i386 rt_tgsigqueueinfo __ia32_sys_rt_tgsigqueueinfo __ia32_compat_sys_rt_tgsigqueueinfo
+336 i386 perf_event_open __ia32_sys_perf_event_open
+337 i386 recvmmsg __ia32_sys_recvmmsg_time32 __ia32_compat_sys_recvmmsg_time32
+338 i386 fanotify_init __ia32_sys_fanotify_init
+339 i386 fanotify_mark __ia32_sys_fanotify_mark __ia32_compat_sys_fanotify_mark
+340 i386 prlimit64 __ia32_sys_prlimit64
+341 i386 name_to_handle_at __ia32_sys_name_to_handle_at
+342 i386 open_by_handle_at __ia32_sys_open_by_handle_at __ia32_compat_sys_open_by_handle_at
+343 i386 clock_adjtime __ia32_sys_clock_adjtime32
+344 i386 syncfs __ia32_sys_syncfs
+345 i386 sendmmsg __ia32_sys_sendmmsg __ia32_compat_sys_sendmmsg
+346 i386 setns __ia32_sys_setns
+347 i386 process_vm_readv __ia32_sys_process_vm_readv __ia32_compat_sys_process_vm_readv
+348 i386 process_vm_writev __ia32_sys_process_vm_writev __ia32_compat_sys_process_vm_writev
+349 i386 kcmp __ia32_sys_kcmp
+350 i386 finit_module __ia32_sys_finit_module
+351 i386 sched_setattr __ia32_sys_sched_setattr
+352 i386 sched_getattr __ia32_sys_sched_getattr
+353 i386 renameat2 __ia32_sys_renameat2
+354 i386 seccomp __ia32_sys_seccomp
+355 i386 getrandom __ia32_sys_getrandom
+356 i386 memfd_create __ia32_sys_memfd_create
+357 i386 bpf __ia32_sys_bpf
+358 i386 execveat __ia32_sys_execveat __ia32_compat_sys_execveat
+359 i386 socket __ia32_sys_socket
+360 i386 socketpair __ia32_sys_socketpair
+361 i386 bind __ia32_sys_bind
+362 i386 connect __ia32_sys_connect
+363 i386 listen __ia32_sys_listen
+364 i386 accept4 __ia32_sys_accept4
+365 i386 getsockopt __ia32_sys_getsockopt __ia32_compat_sys_getsockopt
+366 i386 setsockopt __ia32_sys_setsockopt __ia32_compat_sys_setsockopt
+367 i386 getsockname __ia32_sys_getsockname
+368 i386 getpeername __ia32_sys_getpeername
+369 i386 sendto __ia32_sys_sendto
+370 i386 sendmsg __ia32_sys_sendmsg __ia32_compat_sys_sendmsg
+371 i386 recvfrom __ia32_sys_recvfrom __ia32_compat_sys_recvfrom
+372 i386 recvmsg __ia32_sys_recvmsg __ia32_compat_sys_recvmsg
+373 i386 shutdown __ia32_sys_shutdown
+374 i386 userfaultfd __ia32_sys_userfaultfd
+375 i386 membarrier __ia32_sys_membarrier
+376 i386 mlock2 __ia32_sys_mlock2
+377 i386 copy_file_range __ia32_sys_copy_file_range
+378 i386 preadv2 __ia32_sys_preadv2 __ia32_compat_sys_preadv2
+379 i386 pwritev2 __ia32_sys_pwritev2 __ia32_compat_sys_pwritev2
+380 i386 pkey_mprotect __ia32_sys_pkey_mprotect
+381 i386 pkey_alloc __ia32_sys_pkey_alloc
+382 i386 pkey_free __ia32_sys_pkey_free
+383 i386 statx __ia32_sys_statx
+384 i386 arch_prctl __ia32_sys_arch_prctl __ia32_compat_sys_arch_prctl
+385 i386 io_pgetevents __ia32_sys_io_pgetevents_time32 __ia32_compat_sys_io_pgetevents
+386 i386 rseq __ia32_sys_rseq
+393 i386 semget __ia32_sys_semget
+394 i386 semctl __ia32_sys_semctl __ia32_compat_sys_semctl
+395 i386 shmget __ia32_sys_shmget
+396 i386 shmctl __ia32_sys_shmctl __ia32_compat_sys_shmctl
+397 i386 shmat __ia32_sys_shmat __ia32_compat_sys_shmat
+398 i386 shmdt __ia32_sys_shmdt
+399 i386 msgget __ia32_sys_msgget
+400 i386 msgsnd __ia32_sys_msgsnd __ia32_compat_sys_msgsnd
+401 i386 msgrcv __ia32_sys_msgrcv __ia32_compat_sys_msgrcv
+402 i386 msgctl __ia32_sys_msgctl __ia32_compat_sys_msgctl
+403 i386 clock_gettime64 __ia32_sys_clock_gettime
+404 i386 clock_settime64 __ia32_sys_clock_settime
+405 i386 clock_adjtime64 __ia32_sys_clock_adjtime
+406 i386 clock_getres_time64 __ia32_sys_clock_getres
+407 i386 clock_nanosleep_time64 __ia32_sys_clock_nanosleep
+408 i386 timer_gettime64 __ia32_sys_timer_gettime
+409 i386 timer_settime64 __ia32_sys_timer_settime
+410 i386 timerfd_gettime64 __ia32_sys_timerfd_gettime
+411 i386 timerfd_settime64 __ia32_sys_timerfd_settime
+412 i386 utimensat_time64 __ia32_sys_utimensat
+413 i386 pselect6_time64 __ia32_sys_pselect6 __ia32_compat_sys_pselect6_time64
+414 i386 ppoll_time64 __ia32_sys_ppoll __ia32_compat_sys_ppoll_time64
+416 i386 io_pgetevents_time64 __ia32_sys_io_pgetevents
+417 i386 recvmmsg_time64 __ia32_sys_recvmmsg __ia32_compat_sys_recvmmsg_time64
+418 i386 mq_timedsend_time64 __ia32_sys_mq_timedsend
+419 i386 mq_timedreceive_time64 __ia32_sys_mq_timedreceive
+420 i386 semtimedop_time64 __ia32_sys_semtimedop
+421 i386 rt_sigtimedwait_time64 __ia32_sys_rt_sigtimedwait __ia32_compat_sys_rt_sigtimedwait_time64
+422 i386 futex_time64 __ia32_sys_futex
+423 i386 sched_rr_get_interval_time64 __ia32_sys_sched_rr_get_interval
+424 i386 pidfd_send_signal __ia32_sys_pidfd_send_signal
+425 i386 io_uring_setup __ia32_sys_io_uring_setup
+426 i386 io_uring_enter __ia32_sys_io_uring_enter
+427 i386 io_uring_register __ia32_sys_io_uring_register
+428 i386 open_tree __ia32_sys_open_tree
+429 i386 move_mount __ia32_sys_move_mount
+430 i386 fsopen __ia32_sys_fsopen
+431 i386 fsconfig __ia32_sys_fsconfig
+432 i386 fsmount __ia32_sys_fsmount
+433 i386 fspick __ia32_sys_fspick
+434 i386 pidfd_open __ia32_sys_pidfd_open
+435 i386 clone3 __ia32_sys_clone3
+437 i386 openat2 __ia32_sys_openat2
+438 i386 pidfd_getfd __ia32_sys_pidfd_getfd
diff --git a/arch/x86/entry/syscalls/syscalltbl.sh b/arch/x86/entry/syscalls/syscalltbl.sh
index 1af2be39e7d9..e776a68bbe42 100644
--- a/arch/x86/entry/syscalls/syscalltbl.sh
+++ b/arch/x86/entry/syscalls/syscalltbl.sh
@@ -36,25 +36,32 @@ emit() {
if [ "$abi" = "64" -a "${entry}" != "${entry#__x64_sys}" ]; then
umlentry="sys${entry#__x64_sys}"
fi
+ if [ "$abi" = "I386" -a "${entry}" != "${entry#__ia32_sys}" ]; then
+ umlentry="sys${entry#__ia32_sys}"
+ fi
- if [ -z "$compat" ]; then
- if [ -n "$entry" -a -z "$umlentry" ]; then
- syscall_macro "$abi" "$nr" "$entry"
- elif [ -n "$umlentry" ]; then # implies -n "$entry"
+ if [ -n "$entry" ]; then
+ if [ -n "$umlentry" ]; then
echo "#ifdef CONFIG_X86"
- syscall_macro "$abi" "$nr" "$entry"
+ fi
+
+ if [ -n "$compat" ]; then
+ echo "#ifdef CONFIG_X86_32"
+ fi
+
+ syscall_macro "$abi" "$nr" "$entry"
+
+ if [ -n "$compat" ]; then
+ echo "#else /* CONFIG_X86_32 */"
+ syscall_macro "$abi" "$nr" "$compat"
+ echo "#endif"
+ fi
+
+ if [ -n "$umlentry" ]; then
echo "#else /* CONFIG_UML */"
syscall_macro "$abi" "$nr" "$umlentry"
echo "#endif"
fi
- else
- echo "#ifdef CONFIG_X86_32"
- if [ -n "$entry" ]; then
- syscall_macro "$abi" "$nr" "$entry"
- fi
- echo "#else"
- syscall_macro "$abi" "$nr" "$compat"
- echo "#endif"
fi
}
diff --git a/arch/x86/include/asm/syscall.h b/arch/x86/include/asm/syscall.h
index d20ffc518cf4..576178aefa01 100644
--- a/arch/x86/include/asm/syscall.h
+++ b/arch/x86/include/asm/syscall.h
@@ -17,13 +17,7 @@
#include <asm/thread_info.h> /* for TS_COMPAT */
#include <asm/unistd.h>
-#ifdef CONFIG_X86_64
typedef asmlinkage long (*sys_call_ptr_t)(const struct pt_regs *);
-#else
-typedef asmlinkage long (*sys_call_ptr_t)(unsigned long, unsigned long,
- unsigned long, unsigned long,
- unsigned long, unsigned long);
-#endif /* CONFIG_X86_64 */
extern const sys_call_ptr_t sys_call_table[];
#if defined(CONFIG_X86_32)
diff --git a/arch/x86/include/asm/syscall_wrapper.h b/arch/x86/include/asm/syscall_wrapper.h
index 1166635cd841..f793f3b990a8 100644
--- a/arch/x86/include/asm/syscall_wrapper.h
+++ b/arch/x86/include/asm/syscall_wrapper.h
@@ -8,6 +8,50 @@
struct pt_regs;
+extern asmlinkage long __x64_sys_ni_syscall(const struct pt_regs *regs);
+extern asmlinkage long __ia32_sys_ni_syscall(const struct pt_regs *regs);
+
+/*
+ * Instead of the generic __SYSCALL_DEFINEx() definition, the x86 version takes
+ * struct pt_regs *regs as the only argument of the syscall stub(s) named as:
+ * __x64_sys_*() - 64-bit native syscall
+ * __ia32_sys_*() - 32-bit native syscall or common compat syscall
+ * __ia32_compat_sys_*() - 32-bit compat syscall
+ * __x32_compat_sys_*() - 64-bit X32 compat syscall
+ *
+ * The registers are decoded according to the ABI:
+ * 64-bit: RDI, RSI, RDX, R10, R8, R9
+ * 32-bit: EBX, ECX, EDX, ESI, EDI, EBP
+ *
+ * The stub then passes the decoded arguments to the __se_sys_*() wrapper to
+ * perform sign-extension (omitted for zero-argument syscalls). Finally the
+ * arguments are passed to the __do_sys_*() function which is the actual
+ * syscall. These wrappers are marked as inline so the compiler can optimize
+ * the functions where appropriate.
+ *
+ * Example assembly (slightly re-ordered for better readability):
+ *
+ * <__x64_sys_recv>: <-- syscall with 4 parameters
+ * callq <__fentry__>
+ *
+ * mov 0x70(%rdi),%rdi <-- decode regs->di
+ * mov 0x68(%rdi),%rsi <-- decode regs->si
+ * mov 0x60(%rdi),%rdx <-- decode regs->dx
+ * mov 0x38(%rdi),%rcx <-- decode regs->r10
+ *
+ * xor %r9d,%r9d <-- clear %r9
+ * xor %r8d,%r8d <-- clear %r8
+ *
+ * callq __sys_recvfrom <-- do the actual work in __sys_recvfrom()
+ * which takes 6 arguments
+ *
+ * cltq <-- extend return value to 64-bit
+ * retq <-- return
+ *
+ * This approach avoids leaking random user-provided register content down
+ * the call chain.
+ */
+
/* Mapping of registers to parameters for syscalls on x86-64 and x32 */
#define SC_X86_64_REGS_TO_ARGS(x, ...) \
__MAP(x,__SC_ARGS \
@@ -65,15 +109,27 @@ struct pt_regs;
#define __X64_SYS_NI(sys_name)
#endif /* CONFIG_X86_64 */
+#if defined(CONFIG_X86_32) || defined(CONFIG_IA32_EMULATION)
+#define __IA32_SYS_STUB0(sys_name) \
+ __SYS_STUB0(ia32, sys_name)
+
+#define __IA32_SYS_STUBx(x, sys_name, ...) \
+ __SYS_STUBx(ia32, sys_name, \
+ SC_IA32_REGS_TO_ARGS(x, __VA_ARGS__))
+
+#define __IA32_COND_SYSCALL(sys_name) \
+ __COND_SYSCALL(ia32, sys_name)
+
+#define __IA32_SYS_NI(sys_name) \
+ __SYS_NI(ia32, sys_name)
+#else /* CONFIG_X86_32 || CONFIG_IA32_EMULATION */
+#define __IA32_SYS_STUB0(sys_name)
+#define __IA32_SYS_STUBx(x, sys_name, ...)
+#define __IA32_COND_SYSCALL(sys_name)
+#define __IA32_SYS_NI(sys_name)
+#endif /* CONFIG_X86_32 || CONFIG_IA32_EMULATION */
+
#ifdef CONFIG_IA32_EMULATION
-/*
- * For IA32 emulation, we need to handle "compat" syscalls *and* create
- * additional wrappers (aptly named __ia32_sys_xyzzy) which decode the
- * ia32 regs in the proper order for shared or "common" syscalls. As some
- * syscalls may not be implemented, we need to expand COND_SYSCALL in
- * kernel/sys_ni.c and SYS_NI in kernel/time/posix-stubs.c to cover this
- * case as well.
- */
#define __IA32_COMPAT_SYS_STUB0(compat_sys_name) \
__SYS_STUB0(ia32, compat_sys_name)
@@ -86,28 +142,11 @@ struct pt_regs;
#define __IA32_COMPAT_SYS_NI(compat_sys_name) \
__SYS_NI(ia32, compat_sys_name)
-
-#define __IA32_SYS_STUB0(sys_name) \
- __SYS_STUB0(ia32, sys_name)
-
-#define __IA32_SYS_STUBx(x, sys_name, ...) \
- __SYS_STUBx(ia32, sys_name, \
- SC_IA32_REGS_TO_ARGS(x, __VA_ARGS__))
-
-#define __IA32_COND_SYSCALL(sys_name) \
- __COND_SYSCALL(ia32, sys_name)
-
-#define __IA32_SYS_NI(sys_name) \
- __SYS_NI(ia32, sys_name)
#else /* CONFIG_IA32_EMULATION */
#define __IA32_COMPAT_SYS_STUB0(compat_sys_name)
#define __IA32_COMPAT_SYS_STUBx(x, compat_sys_name, ...)
#define __IA32_COMPAT_COND_SYSCALL(compat_sys_name)
#define __IA32_COMPAT_SYS_NI(compat_sys_name)
-#define __IA32_SYS_STUB0(sys_name)
-#define __IA32_SYS_STUBx(x, sys_name, ...)
-#define __IA32_COND_SYSCALL(sys_name)
-#define __IA32_SYS_NI(sys_name)
#endif /* CONFIG_IA32_EMULATION */
@@ -182,40 +221,6 @@ struct pt_regs;
#endif /* CONFIG_COMPAT */
-
-/*
- * Instead of the generic __SYSCALL_DEFINEx() definition, this macro takes
- * struct pt_regs *regs as the only argument of the syscall stub named
- * __x64_sys_*(). It decodes just the registers it needs and passes them on to
- * the __se_sys_*() wrapper performing sign extension and then to the
- * __do_sys_*() function doing the actual job. These wrappers and functions
- * are inlined (at least in very most cases), meaning that the assembly looks
- * as follows (slightly re-ordered for better readability):
- *
- * <__x64_sys_recv>: <-- syscall with 4 parameters
- * callq <__fentry__>
- *
- * mov 0x70(%rdi),%rdi <-- decode regs->di
- * mov 0x68(%rdi),%rsi <-- decode regs->si
- * mov 0x60(%rdi),%rdx <-- decode regs->dx
- * mov 0x38(%rdi),%rcx <-- decode regs->r10
- *
- * xor %r9d,%r9d <-- clear %r9
- * xor %r8d,%r8d <-- clear %r8
- *
- * callq __sys_recvfrom <-- do the actual work in __sys_recvfrom()
- * which takes 6 arguments
- *
- * cltq <-- extend return value to 64-bit
- * retq <-- return
- *
- * This approach avoids leaking random user-provided register content down
- * the call chain.
- *
- * If IA32_EMULATION is enabled, this macro generates an additional wrapper
- * named __ia32_sys_*() which decodes the struct pt_regs *regs according
- * to the i386 calling convention (bx, cx, dx, si, di, bp).
- */
#define __SYSCALL_DEFINEx(x, name, ...) \
static long __se_sys##name(__MAP(x,__SC_LONG,__VA_ARGS__)); \
static inline long __do_sys##name(__MAP(x,__SC_DECL,__VA_ARGS__));\
diff --git a/arch/x86/include/asm/syscalls.h b/arch/x86/include/asm/syscalls.h
index 91b7b6e1a115..06cbdca634d6 100644
--- a/arch/x86/include/asm/syscalls.h
+++ b/arch/x86/include/asm/syscalls.h
@@ -17,33 +17,4 @@
/* kernel/ioport.c */
long ksys_ioperm(unsigned long from, unsigned long num, int turn_on);
-#ifdef CONFIG_X86_32
-/*
- * These definitions are only valid on pure 32-bit systems; x86-64 uses a
- * different syscall calling convention
- */
-asmlinkage long sys_ioperm(unsigned long, unsigned long, int);
-asmlinkage long sys_iopl(unsigned int);
-
-/* kernel/ldt.c */
-asmlinkage long sys_modify_ldt(int, void __user *, unsigned long);
-
-/* kernel/signal.c */
-asmlinkage long sys_rt_sigreturn(void);
-
-/* kernel/tls.c */
-asmlinkage long sys_set_thread_area(struct user_desc __user *);
-asmlinkage long sys_get_thread_area(struct user_desc __user *);
-
-/* X86_32 only */
-
-/* kernel/signal.c */
-asmlinkage long sys_sigreturn(void);
-
-/* kernel/vm86_32.c */
-struct vm86_struct;
-asmlinkage long sys_vm86old(struct vm86_struct __user *);
-asmlinkage long sys_vm86(unsigned long, unsigned long);
-
-#endif /* CONFIG_X86_32 */
#endif /* _ASM_X86_SYSCALLS_H */
--
2.24.1
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