From 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Sat, 16 Apr 2005 15:20:36 -0700 Subject: Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip! --- arch/ia64/ia32/ia32_entry.S | 500 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 500 insertions(+) create mode 100644 arch/ia64/ia32/ia32_entry.S (limited to 'arch/ia64/ia32/ia32_entry.S') diff --git a/arch/ia64/ia32/ia32_entry.S b/arch/ia64/ia32/ia32_entry.S new file mode 100644 index 00000000000..829a6d80711 --- /dev/null +++ b/arch/ia64/ia32/ia32_entry.S @@ -0,0 +1,500 @@ +#include +#include +#include +#include +#include + +#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 sys32_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 -- cgit v1.2.3