#include <asm/dwarf2.h>
#include <asm/calling.h>
-#include <asm/offset.h>
+#include <asm/asm-offsets.h>
#include <asm/current.h>
#include <asm/errno.h>
#include <asm/ia32_unistd.h>
#include <asm/thread_info.h>
#include <asm/segment.h>
#include <asm/vsyscall32.h>
+#include <asm/irqflags.h>
#include <linux/linkage.h>
+#define IA32_NR_syscalls ((ia32_syscall_end - ia32_sys_call_table)/8)
+
.macro IA32_ARG_FIXUP noebp=0
movl %edi,%r8d
.if \noebp
movq %rax,R8(%rsp)
.endm
+ .macro CFI_STARTPROC32 simple
+ CFI_STARTPROC \simple
+ CFI_UNDEFINED r8
+ CFI_UNDEFINED r9
+ CFI_UNDEFINED r10
+ CFI_UNDEFINED r11
+ CFI_UNDEFINED r12
+ CFI_UNDEFINED r13
+ CFI_UNDEFINED r14
+ CFI_UNDEFINED r15
+ .endm
+
/*
* 32bit SYSENTER instruction entry.
*
* with the int 0x80 path.
*/
ENTRY(ia32_sysenter_target)
- CFI_STARTPROC
+ CFI_STARTPROC32 simple
+ CFI_DEF_CFA rsp,0
+ CFI_REGISTER rsp,rbp
swapgs
movq %gs:pda_kernelstack, %rsp
addq $(PDA_STACKOFFSET),%rsp
+ /*
+ * No need to follow this irqs on/off section: the syscall
+ * disabled irqs, here we enable it straight after entry:
+ */
sti
movl %ebp,%ebp /* zero extension */
pushq $__USER32_DS
+ CFI_ADJUST_CFA_OFFSET 8
+ /*CFI_REL_OFFSET ss,0*/
pushq %rbp
+ CFI_ADJUST_CFA_OFFSET 8
+ CFI_REL_OFFSET rsp,0
pushfq
+ CFI_ADJUST_CFA_OFFSET 8
+ /*CFI_REL_OFFSET rflags,0*/
movl $VSYSCALL32_SYSEXIT, %r10d
+ CFI_REGISTER rip,r10
pushq $__USER32_CS
+ CFI_ADJUST_CFA_OFFSET 8
+ /*CFI_REL_OFFSET cs,0*/
movl %eax, %eax
pushq %r10
+ CFI_ADJUST_CFA_OFFSET 8
+ CFI_REL_OFFSET rip,0
pushq %rax
+ CFI_ADJUST_CFA_OFFSET 8
cld
- SAVE_ARGS 0,0,1
+ SAVE_ARGS 0,0,0
/* no need to do an access_ok check here because rbp has been
32bit zero extended */
1: movl (%rbp),%r9d
.quad 1b,ia32_badarg
.previous
GET_THREAD_INFO(%r10)
- testl $(_TIF_SYSCALL_TRACE|_TIF_SYSCALL_AUDIT),threadinfo_flags(%r10)
+ orl $TS_COMPAT,threadinfo_status(%r10)
+ testl $(_TIF_SYSCALL_TRACE|_TIF_SYSCALL_AUDIT|_TIF_SECCOMP),threadinfo_flags(%r10)
+ CFI_REMEMBER_STATE
jnz sysenter_tracesys
sysenter_do_call:
- cmpl $(IA32_NR_syscalls),%eax
- jae ia32_badsys
+ cmpl $(IA32_NR_syscalls-1),%eax
+ ja ia32_badsys
IA32_ARG_FIXUP 1
call *ia32_sys_call_table(,%rax,8)
movq %rax,RAX-ARGOFFSET(%rsp)
GET_THREAD_INFO(%r10)
cli
+ TRACE_IRQS_OFF
testl $_TIF_ALLWORK_MASK,threadinfo_flags(%r10)
jnz int_ret_from_sys_call
+ andl $~TS_COMPAT,threadinfo_status(%r10)
/* clear IF, that popfq doesn't enable interrupts early */
andl $~0x200,EFLAGS-R11(%rsp)
RESTORE_ARGS 1,24,1,1,1,1
popfq
+ CFI_ADJUST_CFA_OFFSET -8
+ /*CFI_RESTORE rflags*/
popq %rcx /* User %esp */
+ CFI_ADJUST_CFA_OFFSET -8
+ CFI_REGISTER rsp,rcx
movl $VSYSCALL32_SYSEXIT,%edx /* User %eip */
+ CFI_REGISTER rip,rdx
+ TRACE_IRQS_ON
swapgs
sti /* sti only takes effect after the next instruction */
/* sysexit */
.byte 0xf, 0x35
sysenter_tracesys:
+ CFI_RESTORE_STATE
SAVE_REST
CLEAR_RREGS
movq $-ENOSYS,RAX(%rsp) /* really needed? */
.previous
jmp sysenter_do_call
CFI_ENDPROC
+ENDPROC(ia32_sysenter_target)
/*
* 32bit SYSCALL instruction entry.
* with the int 0x80 path.
*/
ENTRY(ia32_cstar_target)
- CFI_STARTPROC
+ CFI_STARTPROC32 simple
+ CFI_DEF_CFA rsp,PDA_STACKOFFSET
+ CFI_REGISTER rip,rcx
+ /*CFI_REGISTER rflags,r11*/
swapgs
movl %esp,%r8d
+ CFI_REGISTER rsp,r8
movq %gs:pda_kernelstack,%rsp
+ /*
+ * No need to follow this irqs on/off section: the syscall
+ * disabled irqs and here we enable it straight after entry:
+ */
sti
SAVE_ARGS 8,1,1
movl %eax,%eax /* zero extension */
movq %rax,ORIG_RAX-ARGOFFSET(%rsp)
movq %rcx,RIP-ARGOFFSET(%rsp)
+ CFI_REL_OFFSET rip,RIP-ARGOFFSET
movq %rbp,RCX-ARGOFFSET(%rsp) /* this lies slightly to ptrace */
movl %ebp,%ecx
movq $__USER32_CS,CS-ARGOFFSET(%rsp)
movq $__USER32_DS,SS-ARGOFFSET(%rsp)
movq %r11,EFLAGS-ARGOFFSET(%rsp)
+ /*CFI_REL_OFFSET rflags,EFLAGS-ARGOFFSET*/
movq %r8,RSP-ARGOFFSET(%rsp)
+ CFI_REL_OFFSET rsp,RSP-ARGOFFSET
/* no need to do an access_ok check here because r8 has been
32bit zero extended */
/* hardware stack frame is complete now */
.quad 1b,ia32_badarg
.previous
GET_THREAD_INFO(%r10)
- testl $(_TIF_SYSCALL_TRACE|_TIF_SYSCALL_AUDIT),threadinfo_flags(%r10)
+ orl $TS_COMPAT,threadinfo_status(%r10)
+ testl $(_TIF_SYSCALL_TRACE|_TIF_SYSCALL_AUDIT|_TIF_SECCOMP),threadinfo_flags(%r10)
+ CFI_REMEMBER_STATE
jnz cstar_tracesys
cstar_do_call:
- cmpl $IA32_NR_syscalls,%eax
- jae ia32_badsys
+ cmpl $IA32_NR_syscalls-1,%eax
+ ja ia32_badsys
IA32_ARG_FIXUP 1
call *ia32_sys_call_table(,%rax,8)
movq %rax,RAX-ARGOFFSET(%rsp)
GET_THREAD_INFO(%r10)
cli
+ TRACE_IRQS_OFF
testl $_TIF_ALLWORK_MASK,threadinfo_flags(%r10)
jnz int_ret_from_sys_call
+ andl $~TS_COMPAT,threadinfo_status(%r10)
RESTORE_ARGS 1,-ARG_SKIP,1,1,1
movl RIP-ARGOFFSET(%rsp),%ecx
+ CFI_REGISTER rip,rcx
movl EFLAGS-ARGOFFSET(%rsp),%r11d
+ /*CFI_REGISTER rflags,r11*/
+ TRACE_IRQS_ON
movl RSP-ARGOFFSET(%rsp),%esp
+ CFI_RESTORE rsp
swapgs
sysretl
cstar_tracesys:
+ CFI_RESTORE_STATE
SAVE_REST
CLEAR_RREGS
movq $-ENOSYS,RAX(%rsp) /* really needed? */
.quad 1b,ia32_badarg
.previous
jmp cstar_do_call
+END(ia32_cstar_target)
ia32_badarg:
movq $-EFAULT,%rax
*/
ENTRY(ia32_syscall)
- CFI_STARTPROC
- swapgs
+ CFI_STARTPROC simple
+ CFI_DEF_CFA rsp,SS+8-RIP
+ /*CFI_REL_OFFSET ss,SS-RIP*/
+ CFI_REL_OFFSET rsp,RSP-RIP
+ /*CFI_REL_OFFSET rflags,EFLAGS-RIP*/
+ /*CFI_REL_OFFSET cs,CS-RIP*/
+ CFI_REL_OFFSET rip,RIP-RIP
+ swapgs
+ /*
+ * No need to follow this irqs on/off section: the syscall
+ * disabled irqs and here we enable it straight after entry:
+ */
sti
movl %eax,%eax
pushq %rax
+ CFI_ADJUST_CFA_OFFSET 8
cld
/* note the registers are not zero extended to the sf.
this could be a problem. */
SAVE_ARGS 0,0,1
GET_THREAD_INFO(%r10)
- testl $(_TIF_SYSCALL_TRACE|_TIF_SYSCALL_AUDIT),threadinfo_flags(%r10)
+ orl $TS_COMPAT,threadinfo_status(%r10)
+ testl $(_TIF_SYSCALL_TRACE|_TIF_SYSCALL_AUDIT|_TIF_SECCOMP),threadinfo_flags(%r10)
jnz ia32_tracesys
ia32_do_syscall:
- cmpl $(IA32_NR_syscalls),%eax
- jae ia32_badsys
+ cmpl $(IA32_NR_syscalls-1),%eax
+ ja ia32_badsys
IA32_ARG_FIXUP
call *ia32_sys_call_table(,%rax,8) # xxx: rip relative
ia32_sysret:
LOAD_ARGS ARGOFFSET /* reload args from stack in case ptrace changed it */
RESTORE_REST
jmp ia32_do_syscall
+END(ia32_syscall)
ia32_badsys:
movq $0,ORIG_RAX-ARGOFFSET(%rsp)
movq $-ENOSYS,RAX-ARGOFFSET(%rsp)
jmp int_ret_from_sys_call
-ni_syscall:
- movq %rax,%rdi
- jmp sys32_ni_syscall
-
quiet_ni_syscall:
movq $-ENOSYS,%rax
ret
CFI_ENDPROC
- .macro PTREGSCALL label, func
+ .macro PTREGSCALL label, func, arg
.globl \label
\label:
leaq \func(%rip),%rax
+ leaq -ARGOFFSET+8(%rsp),\arg /* 8 for return address */
jmp ia32_ptregs_common
.endm
- PTREGSCALL stub32_rt_sigreturn, sys32_rt_sigreturn
- PTREGSCALL stub32_sigreturn, sys32_sigreturn
- PTREGSCALL stub32_sigaltstack, sys32_sigaltstack
- PTREGSCALL stub32_sigsuspend, sys32_sigsuspend
- PTREGSCALL stub32_execve, sys32_execve
- PTREGSCALL stub32_fork, sys_fork
- PTREGSCALL stub32_clone, sys32_clone
- PTREGSCALL stub32_vfork, sys_vfork
- PTREGSCALL stub32_iopl, sys_iopl
- PTREGSCALL stub32_rt_sigsuspend, sys_rt_sigsuspend
+ CFI_STARTPROC32
+
+ PTREGSCALL stub32_rt_sigreturn, sys32_rt_sigreturn, %rdi
+ PTREGSCALL stub32_sigreturn, sys32_sigreturn, %rdi
+ PTREGSCALL stub32_sigaltstack, sys32_sigaltstack, %rdx
+ PTREGSCALL stub32_sigsuspend, sys32_sigsuspend, %rcx
+ PTREGSCALL stub32_execve, sys32_execve, %rcx
+ PTREGSCALL stub32_fork, sys_fork, %rdi
+ PTREGSCALL stub32_clone, sys32_clone, %rdx
+ PTREGSCALL stub32_vfork, sys_vfork, %rdi
+ PTREGSCALL stub32_iopl, sys_iopl, %rsi
+ PTREGSCALL stub32_rt_sigsuspend, sys_rt_sigsuspend, %rdx
ENTRY(ia32_ptregs_common)
- CFI_STARTPROC
popq %r11
+ CFI_ENDPROC
+ CFI_STARTPROC32 simple
+ CFI_DEF_CFA rsp,SS+8-ARGOFFSET
+ CFI_REL_OFFSET rax,RAX-ARGOFFSET
+ CFI_REL_OFFSET rcx,RCX-ARGOFFSET
+ CFI_REL_OFFSET rdx,RDX-ARGOFFSET
+ CFI_REL_OFFSET rsi,RSI-ARGOFFSET
+ CFI_REL_OFFSET rdi,RDI-ARGOFFSET
+ CFI_REL_OFFSET rip,RIP-ARGOFFSET
+/* CFI_REL_OFFSET cs,CS-ARGOFFSET*/
+/* CFI_REL_OFFSET rflags,EFLAGS-ARGOFFSET*/
+ CFI_REL_OFFSET rsp,RSP-ARGOFFSET
+/* CFI_REL_OFFSET ss,SS-ARGOFFSET*/
SAVE_REST
- movq %r11, %r15
call *%rax
- movq %r15, %r11
RESTORE_REST
- leaq ia32_sysret(%rip),%r11
- pushq %r11
- ret
+ jmp ia32_sysret /* misbalances the return cache */
CFI_ENDPROC
+END(ia32_ptregs_common)
- .data
+ .section .rodata,"a"
.align 8
- .globl ia32_sys_call_table
ia32_sys_call_table:
.quad sys_restart_syscall
.quad sys_exit
.quad stub32_fork
.quad sys_read
.quad sys_write
- .quad sys32_open /* 5 */
+ .quad compat_sys_open /* 5 */
.quad sys_close
.quad sys32_waitpid
.quad sys_creat
.quad sys_unlink /* 10 */
.quad stub32_execve
.quad sys_chdir
- .quad sys32_time
+ .quad compat_sys_time
.quad sys_mknod
.quad sys_chmod /* 15 */
.quad sys_lchown16
- .quad ni_syscall /* old break syscall holder */
+ .quad quiet_ni_syscall /* old break syscall holder */
.quad sys_stat
.quad sys32_lseek
.quad sys_getpid /* 20 */
.quad sys_oldumount /* old_umount */
.quad sys_setuid16
.quad sys_getuid16
- .quad sys_stime /* stime */ /* 25 */
+ .quad compat_sys_stime /* stime */ /* 25 */
.quad sys32_ptrace /* ptrace */
- .quad sys_alarm /* XXX sign extension??? */
+ .quad sys_alarm
.quad sys_fstat /* (old)fstat */
.quad sys_pause
.quad compat_sys_utime /* 30 */
- .quad ni_syscall /* old stty syscall holder */
- .quad ni_syscall /* old gtty syscall holder */
+ .quad quiet_ni_syscall /* old stty syscall holder */
+ .quad quiet_ni_syscall /* old gtty syscall holder */
.quad sys_access
.quad sys_nice
- .quad ni_syscall /* 35 */ /* old ftime syscall holder */
+ .quad quiet_ni_syscall /* 35 */ /* old ftime syscall holder */
.quad sys_sync
.quad sys32_kill
.quad sys_rename
.quad sys_dup
.quad sys32_pipe
.quad compat_sys_times
- .quad ni_syscall /* old prof syscall holder */
+ .quad quiet_ni_syscall /* old prof syscall holder */
.quad sys_brk /* 45 */
.quad sys_setgid16
.quad sys_getgid16
.quad sys_getegid16 /* 50 */
.quad sys_acct
.quad sys_umount /* new_umount */
- .quad ni_syscall /* old lock syscall holder */
+ .quad quiet_ni_syscall /* old lock syscall holder */
.quad compat_sys_ioctl
.quad compat_sys_fcntl64 /* 55 */
- .quad ni_syscall /* old mpx syscall holder */
+ .quad quiet_ni_syscall /* old mpx syscall holder */
.quad sys_setpgid
- .quad ni_syscall /* old ulimit syscall holder */
+ .quad quiet_ni_syscall /* old ulimit syscall holder */
.quad sys32_olduname
.quad sys_umask /* 60 */
.quad sys_chroot
.quad sys_symlink
.quad sys_lstat
.quad sys_readlink /* 85 */
+#ifdef CONFIG_IA32_AOUT
.quad sys_uselib
+#else
+ .quad quiet_ni_syscall
+#endif
.quad sys_swapon
.quad sys_reboot
- .quad sys32_oldreaddir
+ .quad compat_sys_old_readdir
.quad sys32_mmap /* 90 */
.quad sys_munmap
.quad sys_truncate
.quad sys_fchown16 /* 95 */
.quad sys_getpriority
.quad sys_setpriority
- .quad ni_syscall /* old profil syscall holder */
+ .quad quiet_ni_syscall /* old profil syscall holder */
.quad compat_sys_statfs
.quad compat_sys_fstatfs /* 100 */
.quad sys_ioperm
.quad sys32_uname
.quad stub32_iopl /* 110 */
.quad sys_vhangup
- .quad ni_syscall /* old "idle" system call */
+ .quad quiet_ni_syscall /* old "idle" system call */
.quad sys32_vm86_warning /* vm86old */
.quad compat_sys_wait4
.quad sys_swapoff /* 115 */
.quad sys_setdomainname
.quad sys_uname
.quad sys_modify_ldt
- .quad sys32_adjtimex
+ .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 /* quotactl */
+ .quad sys_quotactl
.quad sys_getpgid
.quad sys_fchdir
.quad quiet_ni_syscall /* bdflush */
.quad sys_sysfs /* 135 */
.quad sys_personality
- .quad ni_syscall /* for afs_syscall */
+ .quad quiet_ni_syscall /* for afs_syscall */
.quad sys_setfsuid16
.quad sys_setfsgid16
.quad sys_llseek /* 140 */
- .quad sys32_getdents
+ .quad compat_sys_getdents
.quad compat_sys_select
.quad sys_flock
.quad sys_msync
.quad sys32_rt_sigaction
.quad sys32_rt_sigprocmask /* 175 */
.quad sys32_rt_sigpending
- .quad sys32_rt_sigtimedwait
+ .quad compat_sys_rt_sigtimedwait
.quad sys32_rt_sigqueueinfo
.quad stub32_rt_sigsuspend
.quad sys32_pread /* 180 */
.quad sys_capset
.quad stub32_sigaltstack
.quad sys32_sendfile
- .quad ni_syscall /* streams1 */
- .quad ni_syscall /* streams2 */
+ .quad quiet_ni_syscall /* streams1 */
+ .quad quiet_ni_syscall /* streams2 */
.quad stub32_vfork /* 190 */
.quad compat_sys_getrlimit
.quad sys32_mmap2
.quad sys_pivot_root
.quad sys_mincore
.quad sys_madvise
- .quad sys_getdents64 /* 220 getdents64 */
+ .quad compat_sys_getdents64 /* 220 getdents64 */
.quad compat_sys_fcntl64
- .quad quiet_ni_syscall /* tux */
+#ifdef CONFIG_TUX
+ .quad __sys_tux
+#else
+# ifdef CONFIG_TUX_MODULE
+ .quad sys_tux
+# else
+ .quad quiet_ni_syscall
+# endif
+#endif
.quad quiet_ni_syscall /* security */
.quad sys_gettid
.quad sys_readahead /* 225 */
.quad sys_removexattr /* 235 */
.quad sys_lremovexattr
.quad sys_fremovexattr
- .quad sys_tkill /* 238 */
+ .quad sys_tkill
.quad sys_sendfile64
.quad compat_sys_futex /* 240 */
- .quad compat_sys_sched_setaffinity
- .quad compat_sys_sched_getaffinity
+ .quad compat_sys_sched_setaffinity
+ .quad compat_sys_sched_getaffinity
.quad sys32_set_thread_area
.quad sys32_get_thread_area
- .quad sys32_io_setup
+ .quad compat_sys_io_setup /* 245 */
.quad sys_io_destroy
- .quad sys32_io_getevents
- .quad sys32_io_submit
+ .quad compat_sys_io_getevents
+ .quad compat_sys_io_submit
.quad sys_io_cancel
- .quad sys_fadvise64
- .quad quiet_ni_syscall /* free_huge_pages */
- .quad sys_exit_group /* exit_group */
- .quad sys_lookup_dcookie
+ .quad sys_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
+ .quad sys_epoll_ctl /* 255 */
.quad sys_epoll_wait
.quad sys_remap_file_pages
.quad sys_set_tid_address
- .quad sys32_timer_create
- .quad compat_timer_settime
- .quad compat_timer_gettime
+ .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_clock_settime
- .quad compat_clock_gettime
- .quad compat_clock_getres
- .quad compat_clock_nanosleep
- .quad compat_statfs64 /* statfs64 */
- .quad compat_fstatfs64 /* fstatfs64 */
- .quad sys_tgkill
+ .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 sys_ni_syscall /* sys_vserver */
- .quad sys_ni_syscall /* sys_mbind */
- .quad sys_ni_syscall /* 275 sys_get_mempolicy */
- .quad sys_ni_syscall /* sys_set_mempolicy */
+ .quad sys32_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
- /* don't forget to change IA32_NR_syscalls */
+ .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 sys_sync_file_range
+ .quad sys_tee
+ .quad compat_sys_vmsplice
+ .quad compat_sys_move_pages
ia32_syscall_end:
- .rept IA32_NR_syscalls-(ia32_syscall_end-ia32_sys_call_table)/8
- .quad ni_syscall
- .endr