diff options
Diffstat (limited to 'arch/ia64/ia32/ia32_entry.S')
| -rw-r--r-- | arch/ia64/ia32/ia32_entry.S | 468 |
1 files changed, 0 insertions, 468 deletions
diff --git a/arch/ia64/ia32/ia32_entry.S b/arch/ia64/ia32/ia32_entry.S deleted file mode 100644 index 2fd7479aa216..000000000000 --- a/arch/ia64/ia32/ia32_entry.S +++ /dev/null @@ -1,468 +0,0 @@ -#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 |