| #include <asm/asmmacro.h> |
| #include <asm/ia32.h> |
| #include <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) |
| |
| ENTRY(sys32_rt_sigsuspend) |
| .prologue ASM_UNW_PRLG_RP|ASM_UNW_PRLG_PFS, ASM_UNW_PRLG_GRSAVE(8) |
| alloc loc1=ar.pfs,8,2,3,0 // preserve all eight input regs |
| mov loc0=rp |
| mov out0=in0 // mask |
| mov out1=in1 // sigsetsize |
| mov out2=sp // out2 = &sigscratch |
| .fframe 16 |
| adds sp=-16,sp // allocate dummy "sigscratch" |
| ;; |
| .body |
| br.call.sptk.many rp=ia32_rt_sigsuspend |
| 1: .restore sp |
| adds sp=16,sp |
| mov rp=loc0 |
| mov ar.pfs=loc1 |
| br.ret.sptk.many rp |
| END(sys32_rt_sigsuspend) |
| |
| ENTRY(sys32_sigsuspend) |
| .prologue ASM_UNW_PRLG_RP|ASM_UNW_PRLG_PFS, ASM_UNW_PRLG_GRSAVE(8) |
| alloc loc1=ar.pfs,8,2,3,0 // preserve all eight input regs |
| mov loc0=rp |
| mov out0=in2 // mask (first two args are ignored) |
| ;; |
| mov out1=sp // out1 = &sigscratch |
| .fframe 16 |
| adds sp=-16,sp // allocate dummy "sigscratch" |
| .body |
| br.call.sptk.many rp=ia32_sigsuspend |
| 1: .restore sp |
| adds sp=16,sp |
| mov rp=loc0 |
| mov ar.pfs=loc1 |
| br.ret.sptk.many rp |
| END(sys32_sigsuspend) |
| |
| 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 thrugh |
| 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 |
| .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 sys32_ptrace |
| data8 sys32_alarm |
| data8 sys_ni_syscall |
| data8 sys32_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 sys32_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 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 sys32_gettimeofday |
| data8 sys32_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 sys32_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 sys32_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 sys_ni_syscall /* 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 sys_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 sys32_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 sys32_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 sys32_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 |