+++ /dev/null
-#include <asm/asmmacro.h>
-#include <asm/ia32.h>
-#include <asm/asm-offsets.h>
-#include <asm/signal.h>
-#include <asm/thread_info.h>
-
-#include "../kernel/minstate.h"
-
- /*
- * execve() is special because in case of success, we need to
- * setup a null register window frame (in case an IA-32 process
- * is exec'ing an IA-64 program).
- */
-ENTRY(ia32_execve)
- .prologue ASM_UNW_PRLG_RP|ASM_UNW_PRLG_PFS, ASM_UNW_PRLG_GRSAVE(3)
- alloc loc1=ar.pfs,3,2,4,0
- mov loc0=rp
- .body
- zxt4 out0=in0 // filename
- ;; // stop bit between alloc and call
- zxt4 out1=in1 // argv
- zxt4 out2=in2 // envp
- add out3=16,sp // regs
- br.call.sptk.few rp=sys32_execve
-1: cmp.ge p6,p0=r8,r0
- mov ar.pfs=loc1 // restore ar.pfs
- ;;
-(p6) mov ar.pfs=r0 // clear ar.pfs in case of success
- sxt4 r8=r8 // return 64-bit result
- mov rp=loc0
- br.ret.sptk.few rp
-END(ia32_execve)
-
-ENTRY(ia32_clone)
- .prologue ASM_UNW_PRLG_RP|ASM_UNW_PRLG_PFS, ASM_UNW_PRLG_GRSAVE(5)
- alloc r16=ar.pfs,5,2,6,0
- DO_SAVE_SWITCH_STACK
- mov loc0=rp
- mov loc1=r16 // save ar.pfs across do_fork
- .body
- zxt4 out1=in1 // newsp
- mov out3=16 // stacksize (compensates for 16-byte scratch area)
- adds out2=IA64_SWITCH_STACK_SIZE+16,sp // out2 = ®s
- mov out0=in0 // out0 = clone_flags
- zxt4 out4=in2 // out4 = parent_tidptr
- zxt4 out5=in4 // out5 = child_tidptr
- br.call.sptk.many rp=do_fork
-.ret0: .restore sp
- adds sp=IA64_SWITCH_STACK_SIZE,sp // pop the switch stack
- mov ar.pfs=loc1
- mov rp=loc0
- br.ret.sptk.many rp
-END(ia32_clone)
-
-GLOBAL_ENTRY(ia32_ret_from_clone)
- PT_REGS_UNWIND_INFO(0)
-{ /*
- * Some versions of gas generate bad unwind info if the first instruction of a
- * procedure doesn't go into the first slot of a bundle. This is a workaround.
- */
- nop.m 0
- nop.i 0
- /*
- * We need to call schedule_tail() to complete the scheduling process.
- * Called by ia64_switch_to after do_fork()->copy_thread(). r8 contains the
- * address of the previously executing task.
- */
- br.call.sptk.many rp=ia64_invoke_schedule_tail
-}
-.ret1:
- adds r2=TI_FLAGS+IA64_TASK_SIZE,r13
- ;;
- ld4 r2=[r2]
- ;;
- mov r8=0
- and r2=_TIF_SYSCALL_TRACEAUDIT,r2
- ;;
- cmp.ne p6,p0=r2,r0
-(p6) br.cond.spnt .ia32_strace_check_retval
- ;; // prevent RAW on r8
-END(ia32_ret_from_clone)
- // fall through
-GLOBAL_ENTRY(ia32_ret_from_syscall)
- PT_REGS_UNWIND_INFO(0)
-
- cmp.ge p6,p7=r8,r0 // syscall executed successfully?
- adds r2=IA64_PT_REGS_R8_OFFSET+16,sp // r2 = &pt_regs.r8
- ;;
- alloc r3=ar.pfs,0,0,0,0 // drop the syscall argument frame
- st8 [r2]=r8 // store return value in slot for r8
- br.cond.sptk.many ia64_leave_kernel
-END(ia32_ret_from_syscall)
-
- //
- // Invoke a system call, but do some tracing before and after the call.
- // We MUST preserve the current register frame throughout this routine
- // because some system calls (such as ia64_execve) directly
- // manipulate ar.pfs.
- //
- // Input:
- // r8 = syscall number
- // b6 = syscall entry point
- //
-GLOBAL_ENTRY(ia32_trace_syscall)
- PT_REGS_UNWIND_INFO(0)
- mov r3=-38
- adds r2=IA64_PT_REGS_R8_OFFSET+16,sp
- ;;
- st8 [r2]=r3 // initialize return code to -ENOSYS
- br.call.sptk.few rp=syscall_trace_enter // give parent a chance to catch syscall args
- cmp.lt p6,p0=r8,r0 // check tracehook
- adds r2=IA64_PT_REGS_R8_OFFSET+16,sp // r2 = &pt_regs.r8
- ;;
-(p6) st8.spill [r2]=r8 // store return value in slot for r8
-(p6) br.spnt.few .ret4
-.ret2: // Need to reload arguments (they may be changed by the tracing process)
- adds r2=IA64_PT_REGS_R1_OFFSET+16,sp // r2 = &pt_regs.r1
- adds r3=IA64_PT_REGS_R13_OFFSET+16,sp // r3 = &pt_regs.r13
- mov r15=IA32_NR_syscalls
- ;;
- ld4 r8=[r2],IA64_PT_REGS_R9_OFFSET-IA64_PT_REGS_R1_OFFSET
- movl r16=ia32_syscall_table
- ;;
- ld4 r33=[r2],8 // r9 == ecx
- ld4 r37=[r3],16 // r13 == ebp
- cmp.ltu.unc p6,p7=r8,r15
- ;;
- ld4 r34=[r2],8 // r10 == edx
- ld4 r36=[r3],8 // r15 == edi
-(p6) shladd r16=r8,3,r16 // force ni_syscall if not valid syscall number
- ;;
- ld8 r16=[r16]
- ;;
- ld4 r32=[r2],8 // r11 == ebx
- mov b6=r16
- ld4 r35=[r3],8 // r14 == esi
- br.call.sptk.few rp=b6 // do the syscall
-.ia32_strace_check_retval:
- cmp.lt p6,p0=r8,r0 // syscall failed?
- adds r2=IA64_PT_REGS_R8_OFFSET+16,sp // r2 = &pt_regs.r8
- ;;
- st8.spill [r2]=r8 // store return value in slot for r8
- br.call.sptk.few rp=syscall_trace_leave // give parent a chance to catch return value
-.ret4: alloc r2=ar.pfs,0,0,0,0 // drop the syscall argument frame
- br.cond.sptk.many ia64_leave_kernel
-END(ia32_trace_syscall)
-
-GLOBAL_ENTRY(sys32_vfork)
- alloc r16=ar.pfs,2,2,4,0;;
- mov out0=IA64_CLONE_VFORK|IA64_CLONE_VM|SIGCHLD // out0 = clone_flags
- br.cond.sptk.few .fork1 // do the work
-END(sys32_vfork)
-
-GLOBAL_ENTRY(sys32_fork)
- .prologue ASM_UNW_PRLG_RP|ASM_UNW_PRLG_PFS, ASM_UNW_PRLG_GRSAVE(2)
- alloc r16=ar.pfs,2,2,4,0
- mov out0=SIGCHLD // out0 = clone_flags
- ;;
-.fork1:
- mov loc0=rp
- mov loc1=r16 // save ar.pfs across do_fork
- DO_SAVE_SWITCH_STACK
-
- .body
-
- mov out1=0
- mov out3=0
- adds out2=IA64_SWITCH_STACK_SIZE+16,sp // out2 = ®s
- br.call.sptk.few rp=do_fork
-.ret5: .restore sp
- adds sp=IA64_SWITCH_STACK_SIZE,sp // pop the switch stack
- mov ar.pfs=loc1
- mov rp=loc0
- br.ret.sptk.many rp
-END(sys32_fork)
-
- .rodata
- .align 8
- .globl ia32_syscall_table
-ia32_syscall_table:
- data8 sys_ni_syscall /* 0 - old "setup(" system call*/
- data8 sys_exit
- data8 sys32_fork
- data8 sys_read
- data8 sys_write
- data8 compat_sys_open /* 5 */
- data8 sys_close
- data8 sys32_waitpid
- data8 sys_creat
- data8 sys_link
- data8 sys_unlink /* 10 */
- data8 ia32_execve
- data8 sys_chdir
- data8 compat_sys_time
- data8 sys_mknod
- data8 sys_chmod /* 15 */
- data8 sys_lchown /* 16-bit version */
- data8 sys_ni_syscall /* old break syscall holder */
- data8 sys_ni_syscall
- data8 sys32_lseek
- data8 sys_getpid /* 20 */
- data8 compat_sys_mount
- data8 sys_oldumount
- data8 sys_setuid /* 16-bit version */
- data8 sys_getuid /* 16-bit version */
- data8 compat_sys_stime /* 25 */
- data8 compat_sys_ptrace
- data8 sys32_alarm
- data8 sys_ni_syscall
- data8 sys_pause
- data8 compat_sys_utime /* 30 */
- data8 sys_ni_syscall /* old stty syscall holder */
- data8 sys_ni_syscall /* old gtty syscall holder */
- data8 sys_access
- data8 sys_nice
- data8 sys_ni_syscall /* 35 */ /* old ftime syscall holder */
- data8 sys_sync
- data8 sys_kill
- data8 sys_rename
- data8 sys_mkdir
- data8 sys_rmdir /* 40 */
- data8 sys_dup
- data8 sys_ia64_pipe
- data8 compat_sys_times
- data8 sys_ni_syscall /* old prof syscall holder */
- data8 sys32_brk /* 45 */
- data8 sys_setgid /* 16-bit version */
- data8 sys_getgid /* 16-bit version */
- data8 sys32_signal
- data8 sys_geteuid /* 16-bit version */
- data8 sys_getegid /* 16-bit version */ /* 50 */
- data8 sys_acct
- data8 sys_umount /* recycled never used phys( */
- data8 sys_ni_syscall /* old lock syscall holder */
- data8 compat_sys_ioctl
- data8 compat_sys_fcntl /* 55 */
- data8 sys_ni_syscall /* old mpx syscall holder */
- data8 sys_setpgid
- data8 sys_ni_syscall /* old ulimit syscall holder */
- data8 sys_ni_syscall
- data8 sys_umask /* 60 */
- data8 sys_chroot
- data8 compat_sys_ustat
- data8 sys_dup2
- data8 sys_getppid
- data8 sys_getpgrp /* 65 */
- data8 sys_setsid
- data8 sys32_sigaction
- data8 sys_ni_syscall
- data8 sys_ni_syscall
- data8 sys_setreuid /* 16-bit version */ /* 70 */
- data8 sys_setregid /* 16-bit version */
- data8 sys32_sigsuspend
- data8 compat_sys_sigpending
- data8 sys_sethostname
- data8 compat_sys_setrlimit /* 75 */
- data8 compat_sys_old_getrlimit
- data8 compat_sys_getrusage
- data8 compat_sys_gettimeofday
- data8 compat_sys_settimeofday
- data8 sys32_getgroups16 /* 80 */
- data8 sys32_setgroups16
- data8 sys32_old_select
- data8 sys_symlink
- data8 sys_ni_syscall
- data8 sys_readlink /* 85 */
- data8 sys_uselib
- data8 sys_swapon
- data8 sys_reboot
- data8 compat_sys_old_readdir
- data8 sys32_mmap /* 90 */
- data8 sys32_munmap
- data8 sys_truncate
- data8 sys_ftruncate
- data8 sys_fchmod
- data8 sys_fchown /* 16-bit version */ /* 95 */
- data8 sys_getpriority
- data8 sys_setpriority
- data8 sys_ni_syscall /* old profil syscall holder */
- data8 compat_sys_statfs
- data8 compat_sys_fstatfs /* 100 */
- data8 sys_ni_syscall /* ioperm */
- data8 compat_sys_socketcall
- data8 sys_syslog
- data8 compat_sys_setitimer
- data8 compat_sys_getitimer /* 105 */
- data8 compat_sys_newstat
- data8 compat_sys_newlstat
- data8 compat_sys_newfstat
- data8 sys_ni_syscall
- data8 sys_ni_syscall /* iopl */ /* 110 */
- data8 sys_vhangup
- data8 sys_ni_syscall /* used to be sys_idle */
- data8 sys_ni_syscall
- data8 compat_sys_wait4
- data8 sys_swapoff /* 115 */
- data8 compat_sys_sysinfo
- data8 sys32_ipc
- data8 sys_fsync
- data8 sys32_sigreturn
- data8 ia32_clone /* 120 */
- data8 sys_setdomainname
- data8 sys32_newuname
- data8 sys32_modify_ldt
- data8 compat_sys_adjtimex
- data8 sys32_mprotect /* 125 */
- data8 compat_sys_sigprocmask
- data8 sys_ni_syscall /* create_module */
- data8 sys_ni_syscall /* init_module */
- data8 sys_ni_syscall /* delete_module */
- data8 sys_ni_syscall /* get_kernel_syms */ /* 130 */
- data8 sys32_quotactl
- data8 sys_getpgid
- data8 sys_fchdir
- data8 sys_ni_syscall /* sys_bdflush */
- data8 sys_sysfs /* 135 */
- data8 sys32_personality
- data8 sys_ni_syscall /* for afs_syscall */
- data8 sys_setfsuid /* 16-bit version */
- data8 sys_setfsgid /* 16-bit version */
- data8 sys_llseek /* 140 */
- data8 compat_sys_getdents
- data8 compat_sys_select
- data8 sys_flock
- data8 sys32_msync
- data8 compat_sys_readv /* 145 */
- data8 compat_sys_writev
- data8 sys_getsid
- data8 sys_fdatasync
- data8 compat_sys_sysctl
- data8 sys_mlock /* 150 */
- data8 sys_munlock
- data8 sys_mlockall
- data8 sys_munlockall
- data8 sys_sched_setparam
- data8 sys_sched_getparam /* 155 */
- data8 sys_sched_setscheduler
- data8 sys_sched_getscheduler
- data8 sys_sched_yield
- data8 sys_sched_get_priority_max
- data8 sys_sched_get_priority_min /* 160 */
- data8 sys32_sched_rr_get_interval
- data8 compat_sys_nanosleep
- data8 sys32_mremap
- data8 sys_setresuid /* 16-bit version */
- data8 sys32_getresuid16 /* 16-bit version */ /* 165 */
- data8 sys_ni_syscall /* vm86 */
- data8 sys_ni_syscall /* sys_query_module */
- data8 sys_poll
- data8 sys_ni_syscall /* nfsservctl */
- data8 sys_setresgid /* 170 */
- data8 sys32_getresgid16
- data8 sys_prctl
- data8 sys32_rt_sigreturn
- data8 sys32_rt_sigaction
- data8 sys32_rt_sigprocmask /* 175 */
- data8 sys_rt_sigpending
- data8 compat_sys_rt_sigtimedwait
- data8 sys32_rt_sigqueueinfo
- data8 compat_sys_rt_sigsuspend
- data8 sys32_pread /* 180 */
- data8 sys32_pwrite
- data8 sys_chown /* 16-bit version */
- data8 sys_getcwd
- data8 sys_capget
- data8 sys_capset /* 185 */
- data8 sys32_sigaltstack
- data8 sys32_sendfile
- data8 sys_ni_syscall /* streams1 */
- data8 sys_ni_syscall /* streams2 */
- data8 sys32_vfork /* 190 */
- data8 compat_sys_getrlimit
- data8 sys32_mmap2
- data8 sys32_truncate64
- data8 sys32_ftruncate64
- data8 sys32_stat64 /* 195 */
- data8 sys32_lstat64
- data8 sys32_fstat64
- data8 sys_lchown
- data8 sys_getuid
- data8 sys_getgid /* 200 */
- data8 sys_geteuid
- data8 sys_getegid
- data8 sys_setreuid
- data8 sys_setregid
- data8 sys_getgroups /* 205 */
- data8 sys_setgroups
- data8 sys_fchown
- data8 sys_setresuid
- data8 sys_getresuid
- data8 sys_setresgid /* 210 */
- data8 sys_getresgid
- data8 sys_chown
- data8 sys_setuid
- data8 sys_setgid
- data8 sys_setfsuid /* 215 */
- data8 sys_setfsgid
- data8 sys_pivot_root
- data8 sys_mincore
- data8 sys_madvise
- data8 compat_sys_getdents64 /* 220 */
- data8 compat_sys_fcntl64
- data8 sys_ni_syscall /* reserved for TUX */
- data8 sys_ni_syscall /* reserved for Security */
- data8 sys_gettid
- data8 sys_readahead /* 225 */
- data8 sys_setxattr
- data8 sys_lsetxattr
- data8 sys_fsetxattr
- data8 sys_getxattr
- data8 sys_lgetxattr /* 230 */
- data8 sys_fgetxattr
- data8 sys_listxattr
- data8 sys_llistxattr
- data8 sys_flistxattr
- data8 sys_removexattr /* 235 */
- data8 sys_lremovexattr
- data8 sys_fremovexattr
- data8 sys_tkill
- data8 sys_sendfile64
- data8 compat_sys_futex /* 240 */
- data8 compat_sys_sched_setaffinity
- data8 compat_sys_sched_getaffinity
- data8 sys32_set_thread_area
- data8 sys32_get_thread_area
- data8 compat_sys_io_setup /* 245 */
- data8 sys_io_destroy
- data8 compat_sys_io_getevents
- data8 compat_sys_io_submit
- data8 sys_io_cancel
- data8 sys_fadvise64 /* 250 */
- data8 sys_ni_syscall
- data8 sys_exit_group
- data8 sys_lookup_dcookie
- data8 sys_epoll_create
- data8 sys32_epoll_ctl /* 255 */
- data8 sys32_epoll_wait
- data8 sys_remap_file_pages
- data8 sys_set_tid_address
- data8 compat_sys_timer_create
- data8 compat_sys_timer_settime /* 260 */
- data8 compat_sys_timer_gettime
- data8 sys_timer_getoverrun
- data8 sys_timer_delete
- data8 compat_sys_clock_settime
- data8 compat_sys_clock_gettime /* 265 */
- data8 compat_sys_clock_getres
- data8 compat_sys_clock_nanosleep
- data8 compat_sys_statfs64
- data8 compat_sys_fstatfs64
- data8 sys_tgkill /* 270 */
- data8 compat_sys_utimes
- data8 sys32_fadvise64_64
- data8 sys_ni_syscall
- data8 sys_ni_syscall
- data8 sys_ni_syscall /* 275 */
- data8 sys_ni_syscall
- data8 compat_sys_mq_open
- data8 sys_mq_unlink
- data8 compat_sys_mq_timedsend
- data8 compat_sys_mq_timedreceive /* 280 */
- data8 compat_sys_mq_notify
- data8 compat_sys_mq_getsetattr
- data8 sys_ni_syscall /* reserved for kexec */
- data8 compat_sys_waitid
-
- // guard against failures to increase IA32_NR_syscalls
- .org ia32_syscall_table + 8*IA32_NR_syscalls
git.samba.org / sfrench / cifs-2.6.git / blobdiff