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#include <asm/asmmacro.h>
#include <asm/offsets.h>
#include <asm/signal.h>
#include "../kernel/entry.h"
//
// Get possibly unaligned sigmask argument into an aligned
// kernel buffer
.text
GLOBAL_ENTRY(ia32_rt_sigsuspend)
// We'll cheat and not do an alloc here since we are ultimately
// going to do a simple branch to the IA64 sys_rt_sigsuspend.
// r32 is still the first argument which is the signal mask.
// We copy this 4-byte aligned value to an 8-byte aligned buffer
// in the task structure and then jump to the IA64 code.
mov r8=r0 // no memory access errors yet
add r10=4,r32
;;
1:
ld4 r2=[r32] // get first half of sigmask
ld4 r3=[r10] // get second half of sigmask
2:
cmp.lt p6,p0=r8,r0 // check memory access
;;
(p6) br.ret.sptk.many rp // it failed
adds r32=IA64_TASK_THREAD_SIGMASK_OFFSET,r13
adds r10=IA64_TASK_THREAD_SIGMASK_OFFSET+4,r13
;;
st4 [r32]=r2
st4 [r10]=r3
br.cond.sptk.many sys_rt_sigsuspend
END(ia32_rt_sigsuspend)
.section __ex_table,"a"
data4 @gprel(1b)
data4 (2b-1b)|1
.previous
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
;;
st8 [r2]=r8 // store return value in slot for r8
br.cond.sptk.few 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:
// r15 = syscall number
// b6 = syscall entry point
//
GLOBAL_ENTRY(ia32_trace_syscall)
PT_REGS_UNWIND_INFO(0)
br.call.sptk.few rp=invoke_syscall_trace // give parent a chance to catch syscall args
.ret0: br.call.sptk.few rp=b6 // do the syscall
.ret1: 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=invoke_syscall_trace // give parent a chance to catch return value
.ret2: br.cond.sptk.many ia64_leave_kernel // rp MUST be != 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)
UNW(.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
UNW(.body)
mov out1=0
mov out3=0
adds out2=IA64_SWITCH_STACK_SIZE+16,sp // out2 = ®s
br.call.sptk.few rp=do_fork
.ret3: mov ar.pfs=loc1
UNW(.restore sp)
adds sp=IA64_SWITCH_STACK_SIZE,sp // pop the switch stack
mov rp=loc0
br.ret.sptk.many rp
END(sys32_fork)
.rodata
.align 8
.globl ia32_syscall_table
ia32_syscall_table:
data8 sys32_ni_syscall /* 0 - old "setup(" system call*/
data8 sys_exit
data8 sys32_fork
data8 sys_read
data8 sys_write
data8 sys_open /* 5 */
data8 sys_close
data8 sys32_waitpid
data8 sys_creat
data8 sys_link
data8 sys_unlink /* 10 */
data8 sys32_execve
data8 sys_chdir
data8 sys32_time
data8 sys_mknod
data8 sys_chmod /* 15 */
data8 sys_lchown
data8 sys32_ni_syscall /* old break syscall holder */
data8 sys32_ni_syscall
data8 sys_lseek
data8 sys_getpid /* 20 */
data8 sys_mount
data8 sys_oldumount
data8 sys_setuid
data8 sys_getuid
data8 sys32_ni_syscall /* sys_stime is not supported on IA64 */ /* 25 */
data8 sys32_ptrace
data8 sys32_alarm
data8 sys32_ni_syscall
data8 sys32_ni_syscall
data8 ia32_utime /* 30 */
data8 sys32_ni_syscall /* old stty syscall holder */
data8 sys32_ni_syscall /* old gtty syscall holder */
data8 sys_access
data8 sys_nice
data8 sys32_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 sys32_times
data8 sys32_ni_syscall /* old prof syscall holder */
data8 sys_brk /* 45 */
data8 sys_setgid
data8 sys_getgid
data8 sys32_ni_syscall
data8 sys_geteuid
data8 sys_getegid /* 50 */
data8 sys_acct
data8 sys_umount /* recycled never used phys( */
data8 sys32_ni_syscall /* old lock syscall holder */
data8 ia32_ioctl
data8 sys32_fcntl /* 55 */
data8 sys32_ni_syscall /* old mpx syscall holder */
data8 sys_setpgid
data8 sys32_ni_syscall /* old ulimit syscall holder */
data8 sys32_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 sys32_ni_syscall
data8 sys32_ni_syscall
data8 sys_setreuid /* 70 */
data8 sys_setregid
data8 sys32_ni_syscall
data8 sys_sigpending
data8 sys_sethostname
data8 sys32_setrlimit /* 75 */
data8 sys32_getrlimit
data8 sys32_getrusage
data8 sys32_gettimeofday
data8 sys32_settimeofday
data8 sys_getgroups /* 80 */
data8 sys_setgroups
data8 old_select
data8 sys_symlink
data8 sys32_ni_syscall
data8 sys_readlink /* 85 */
data8 sys_uselib
data8 sys_swapon
data8 sys_reboot
data8 sys32_readdir
data8 sys32_mmap /* 90 */
data8 sys_munmap
data8 sys_truncate
data8 sys_ftruncate
data8 sys_fchmod
data8 sys_fchown /* 95 */
data8 sys_getpriority
data8 sys_setpriority
data8 sys32_ni_syscall /* old profil syscall holder */
data8 sys32_statfs
data8 sys32_fstatfs /* 100 */
data8 sys_ioperm
data8 sys32_socketcall
data8 sys_syslog
data8 sys32_setitimer
data8 sys32_getitimer /* 105 */
data8 sys32_newstat
data8 sys32_newlstat
data8 sys32_newfstat
data8 sys32_ni_syscall
data8 sys_iopl /* 110 */
data8 sys_vhangup
data8 sys32_ni_syscall // used to be sys_idle
data8 sys32_ni_syscall
data8 sys32_wait4
data8 sys_swapoff /* 115 */
data8 sys_sysinfo
data8 sys32_ipc
data8 sys_fsync
data8 sys32_sigreturn
data8 sys_clone /* 120 */
data8 sys_setdomainname
data8 sys_newuname
data8 sys_modify_ldt
data8 sys_adjtimex
data8 sys32_mprotect /* 125 */
data8 sys_sigprocmask
data8 sys_create_module
data8 sys_init_module
data8 sys_delete_module
data8 sys_get_kernel_syms /* 130 */
data8 sys_quotactl
data8 sys_getpgid
data8 sys_fchdir
data8 sys_bdflush
data8 sys_sysfs /* 135 */
data8 sys_personality
data8 sys32_ni_syscall /* for afs_syscall */
data8 sys_setfsuid
data8 sys_setfsgid
data8 sys_llseek /* 140 */
data8 sys32_getdents
data8 sys32_select
data8 sys_flock
data8 sys_msync
data8 sys32_readv /* 145 */
data8 sys32_writev
data8 sys_getsid
data8 sys_fdatasync
data8 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 sys_sched_rr_get_interval
data8 sys32_nanosleep
data8 sys_mremap
data8 sys_setresuid
data8 sys_getresuid /* 165 */
data8 sys_vm86
data8 sys_query_module
data8 sys_poll
data8 sys_nfsservctl
data8 sys_setresgid /* 170 */
data8 sys_getresgid
data8 sys_prctl
data8 sys32_rt_sigreturn
data8 sys32_rt_sigaction
data8 sys32_rt_sigprocmask /* 175 */
data8 sys_rt_sigpending
data8 sys_rt_sigtimedwait
data8 sys_rt_sigqueueinfo
data8 ia32_rt_sigsuspend
data8 sys_pread /* 180 */
data8 sys_pwrite
data8 sys_chown
data8 sys_getcwd
data8 sys_capget
data8 sys_capset /* 185 */
data8 sys_sigaltstack
data8 sys_sendfile
data8 sys32_ni_syscall /* streams1 */
data8 sys32_ni_syscall /* streams2 */
data8 sys32_vfork /* 190 */
/*
* CAUTION: If any system calls are added beyond this point
* then the check in `arch/ia64/kernel/ivt.S' will have
* to be modified also. You've been warned.
*/
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