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1275 |
phoenix |
/*
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* Compatibility mode system call entry point for x86-64.
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*
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* Copyright 2000,2001 Andi Kleen, SuSE Labs.
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*
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* $Id: ia32entry.S,v 1.1.1.1 2004-04-15 01:36:41 phoenix Exp $
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*/
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#include
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#include
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#include
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#include
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#include
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#include
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.macro IA32_ARG_FIXUP
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movl %edi,%r8d
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movl %ebp,%r9d
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xchg %ecx,%esi
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movl %ebx,%edi
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movl %edx,%edx /* zero extension */
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.endm
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/*
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* 32bit SYSCALL instruction entry.
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*/
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ENTRY(ia32_cstar_target)
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movq $-ENOSYS,%rax
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sysretl
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/*
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* Emulated IA32 system calls via int 0x80.
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*
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* Arguments:
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* %eax System call number.
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* %ebx Arg1
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* %ecx Arg2
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* %edx Arg3
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* %esi Arg4
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* %edi Arg5
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* %ebp Arg6 [note: not saved in the stack frame, should not be touched]
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*
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* Notes:
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* Uses the same stack frame as the x86-64 version.
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* All registers except %eax must be saved (but ptrace may violate that)
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* Arguments are zero extended. For system calls that want sign extension and
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* take long arguments a wrapper is needed. Most calls can just be called
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* directly.
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* Assumes it is only called from user space and entered with interrups off.
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*/
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ENTRY(ia32_syscall)
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swapgs
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sti
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pushq %rax
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cld
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SAVE_ARGS
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GET_CURRENT(%r10)
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testl $PT_TRACESYS,tsk_ptrace(%r10)
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jne ia32_tracesys
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cmpl $(IA32_NR_syscalls),%eax
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jae ia32_badsys
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IA32_ARG_FIXUP
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call *ia32_sys_call_table(,%rax,8) # xxx: rip relative
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movq %rax,RAX-ARGOFFSET(%rsp)
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jmp int_ret_from_sys_call
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ia32_tracesys:
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SAVE_REST
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movq $-ENOSYS,RAX(%rsp)
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movq %rsp,%rdi /* &pt_regs -> arg1 */
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call syscall_trace
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LOAD_ARGS ARGOFFSET /* reload args from stack in case ptrace changed it */
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addq $ARGOFFSET,%rsp
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cmpl $(IA32_NR_syscalls),%eax
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jae 1f
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IA32_ARG_FIXUP
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call *ia32_sys_call_table(,%rax,8)
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ia32_tracesys_end:
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movq %rax,RAX-ARGOFFSET(%rsp)
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1: SAVE_REST
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movq %rsp,%rdi /* &pt_regs -> arg1 */
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call syscall_trace
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addq $ARGOFFSET,%rsp
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jmp int_ret_from_sys_call
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ia32_badsys:
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movq $-ENOSYS,RAX-ARGOFFSET(%rsp)
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movq $0,ORIG_RAX-ARGOFFSET(%rsp)
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jmp int_ret_from_sys_call
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ni_syscall:
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movq %rax,%rdi
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jmp sys32_ni_syscall
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quiet_ni_syscall:
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movl $-ENOSYS,%eax
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ret
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.macro PTREGSCALL label, func
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.globl \label
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\label:
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leaq \func(%rip),%rax
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jmp ia32_ptregs_common
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.endm
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PTREGSCALL stub32_rt_sigreturn, sys32_rt_sigreturn
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PTREGSCALL stub32_sigreturn, sys32_sigreturn
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PTREGSCALL stub32_sigaltstack, sys32_sigaltstack
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PTREGSCALL stub32_sigsuspend, sys32_sigsuspend
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PTREGSCALL stub32_execve, sys32_execve
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PTREGSCALL stub32_fork, sys32_fork
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PTREGSCALL stub32_clone, sys32_clone
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PTREGSCALL stub32_vfork, sys32_vfork
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PTREGSCALL stub32_iopl, sys_iopl
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PTREGSCALL stub32_rt_sigsuspend, sys_rt_sigsuspend
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ENTRY(ia32_ptregs_common)
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popq %r11
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SAVE_REST
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movq %r11, %r15
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call *%rax
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movq %r15, %r11
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RESTORE_REST
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pushq %r11
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ret
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.data
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.align 8
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.globl ia32_sys_call_table
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ia32_sys_call_table:
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.quad ni_syscall /* 0 - old "setup" system call*/
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.quad sys_exit
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.quad stub32_fork
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.quad sys_read
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.quad sys_write
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.quad sys32_open /* 5 */
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.quad sys_close
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.quad sys32_waitpid
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.quad sys_creat
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.quad sys_link
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.quad sys_unlink /* 10 */
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.quad stub32_execve
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.quad sys_chdir
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.quad sys32_time
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.quad sys_mknod
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.quad sys_chmod /* 15 */
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.quad sys_lchown16
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.quad ni_syscall /* old break syscall holder */
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.quad ni_syscall /* (old)stat */
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.quad sys32_lseek
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.quad sys_getpid /* 20 */
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.quad sys_mount /* mount */
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.quad sys_oldumount /* old_umount */
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.quad sys_setuid16
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.quad sys_getuid16
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.quad sys_stime /* stime */ /* 25 */
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.quad sys32_ptrace /* ptrace */
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.quad sys_alarm /* XXX sign extension??? */
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.quad ni_syscall /* (old)fstat */
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.quad sys_pause
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.quad sys32_utime /* 30 */
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.quad ni_syscall /* old stty syscall holder */
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.quad ni_syscall /* old gtty syscall holder */
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.quad sys_access
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.quad sys_nice
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.quad ni_syscall /* 35 */ /* old ftime syscall holder */
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.quad sys_sync
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.quad sys32_kill
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.quad sys_rename
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.quad sys_mkdir
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.quad sys_rmdir /* 40 */
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.quad sys_dup
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.quad sys32_pipe
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.quad sys32_times
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.quad ni_syscall /* old prof syscall holder */
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.quad sys_brk /* 45 */
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.quad sys_setgid16
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.quad sys_getgid16
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.quad sys_signal
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.quad sys_geteuid16
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.quad sys_getegid16 /* 50 */
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.quad sys_acct
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.quad sys_umount /* new_umount */
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.quad ni_syscall /* old lock syscall holder */
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.quad sys32_ioctl
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.quad sys32_fcntl /* 55 */
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.quad ni_syscall /* old mpx syscall holder */
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.quad sys_setpgid
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.quad ni_syscall /* old ulimit syscall holder */
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.quad sys32_olduname
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.quad sys_umask /* 60 */
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.quad sys_chroot
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.quad sys32_ustat
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.quad sys_dup2
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.quad sys_getppid
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.quad sys_getpgrp /* 65 */
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.quad sys_setsid
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.quad sys32_sigaction
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.quad sys_sgetmask
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.quad sys_ssetmask
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.quad sys_setreuid16 /* 70 */
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.quad sys_setregid16
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.quad stub32_sigsuspend
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.quad sys32_sigpending
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.quad sys_sethostname
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.quad sys32_setrlimit /* 75 */
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.quad sys32_old_getrlimit /* old_getrlimit */
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| 209 |
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.quad sys32_getrusage
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| 210 |
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.quad sys32_gettimeofday
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| 211 |
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.quad sys32_settimeofday
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| 212 |
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.quad sys_getgroups16 /* 80 */
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| 213 |
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.quad sys_setgroups16
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| 214 |
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.quad sys32_old_select
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| 215 |
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.quad sys_symlink
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| 216 |
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.quad ni_syscall /* (old)lstat */
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| 217 |
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.quad sys_readlink /* 85 */
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| 218 |
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.quad sys_uselib
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| 219 |
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.quad sys_swapon
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| 220 |
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.quad sys_reboot
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| 221 |
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.quad sys32_oldreaddir
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| 222 |
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.quad sys32_mmap /* 90 */
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| 223 |
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.quad sys_munmap
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| 224 |
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.quad sys_truncate
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| 225 |
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.quad sys_ftruncate
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| 226 |
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.quad sys_fchmod
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| 227 |
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.quad sys_fchown16 /* 95 */
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| 228 |
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.quad sys_getpriority
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| 229 |
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.quad sys_setpriority
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| 230 |
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.quad ni_syscall /* old profil syscall holder */
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| 231 |
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.quad sys32_statfs
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| 232 |
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.quad sys32_fstatfs /* 100 */
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| 233 |
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.quad sys_ioperm
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| 234 |
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.quad sys32_socketcall
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| 235 |
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.quad sys_syslog
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| 236 |
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.quad sys32_setitimer
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| 237 |
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.quad sys32_getitimer /* 105 */
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| 238 |
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.quad sys32_newstat
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| 239 |
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.quad sys32_newlstat
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| 240 |
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.quad sys32_newfstat
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| 241 |
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.quad sys32_uname
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| 242 |
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.quad stub32_iopl /* 110 */
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| 243 |
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.quad sys_vhangup
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| 244 |
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.quad ni_syscall /* old "idle" system call */
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| 245 |
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.quad sys32_vm86_warning /* vm86old */
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| 246 |
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.quad sys32_wait4
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| 247 |
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.quad sys_swapoff /* 115 */
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| 248 |
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.quad sys32_sysinfo
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| 249 |
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.quad sys32_ipc
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| 250 |
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.quad sys_fsync
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| 251 |
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.quad stub32_sigreturn
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| 252 |
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.quad stub32_clone /* 120 */
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| 253 |
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.quad sys_setdomainname
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| 254 |
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.quad sys_uname
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| 255 |
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.quad sys32_modify_ldt
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| 256 |
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.quad sys32_adjtimex
|
| 257 |
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.quad sys32_mprotect /* 125 */
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| 258 |
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.quad sys32_sigprocmask
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| 259 |
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.quad sys32_create_module
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| 260 |
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.quad sys32_init_module
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| 261 |
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.quad sys32_delete_module
|
| 262 |
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.quad sys32_get_kernel_syms /* 130 */
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| 263 |
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.quad ni_syscall /* quotactl */
|
| 264 |
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.quad sys_getpgid
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| 265 |
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.quad sys_fchdir
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| 266 |
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.quad ni_syscall /* bdflush */
|
| 267 |
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.quad sys_sysfs /* 135 */
|
| 268 |
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.quad sys_personality
|
| 269 |
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.quad ni_syscall /* for afs_syscall */
|
| 270 |
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.quad sys_setfsuid16
|
| 271 |
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.quad sys_setfsgid16
|
| 272 |
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.quad sys_llseek /* 140 */
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| 273 |
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.quad sys32_getdents
|
| 274 |
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.quad sys32_select
|
| 275 |
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.quad sys_flock
|
| 276 |
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.quad sys_msync
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| 277 |
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.quad sys32_readv /* 145 */
|
| 278 |
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.quad sys32_writev
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| 279 |
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.quad sys_getsid
|
| 280 |
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.quad sys_fdatasync
|
| 281 |
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.quad sys32_sysctl /* sysctl */
|
| 282 |
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.quad sys_mlock /* 150 */
|
| 283 |
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.quad sys_munlock
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| 284 |
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.quad sys_mlockall
|
| 285 |
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.quad sys_munlockall
|
| 286 |
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.quad sys_sched_setparam
|
| 287 |
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.quad sys_sched_getparam /* 155 */
|
| 288 |
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.quad sys_sched_setscheduler
|
| 289 |
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.quad sys_sched_getscheduler
|
| 290 |
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.quad sys_sched_yield
|
| 291 |
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.quad sys_sched_get_priority_max
|
| 292 |
|
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.quad sys_sched_get_priority_min /* 160 */
|
| 293 |
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.quad sys_sched_rr_get_interval
|
| 294 |
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.quad sys32_nanosleep
|
| 295 |
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.quad sys_mremap
|
| 296 |
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.quad sys_setresuid16
|
| 297 |
|
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.quad sys_getresuid16 /* 165 */
|
| 298 |
|
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.quad sys32_vm86_warning /* vm86 */
|
| 299 |
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.quad sys32_query_module
|
| 300 |
|
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.quad sys_poll
|
| 301 |
|
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.quad sys32_nfsservctl
|
| 302 |
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.quad sys_setresgid16 /* 170 */
|
| 303 |
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.quad sys_getresgid16
|
| 304 |
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.quad sys_prctl
|
| 305 |
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.quad stub32_rt_sigreturn
|
| 306 |
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.quad sys32_rt_sigaction
|
| 307 |
|
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.quad sys32_rt_sigprocmask /* 175 */
|
| 308 |
|
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.quad sys32_rt_sigpending
|
| 309 |
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.quad sys32_rt_sigtimedwait
|
| 310 |
|
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.quad sys32_rt_sigqueueinfo
|
| 311 |
|
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.quad stub32_rt_sigsuspend
|
| 312 |
|
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.quad sys32_pread /* 180 */
|
| 313 |
|
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.quad sys32_pwrite
|
| 314 |
|
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.quad sys_chown16
|
| 315 |
|
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.quad sys_getcwd
|
| 316 |
|
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.quad sys_capget
|
| 317 |
|
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.quad sys_capset
|
| 318 |
|
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.quad stub32_sigaltstack
|
| 319 |
|
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.quad sys32_sendfile
|
| 320 |
|
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.quad ni_syscall /* streams1 */
|
| 321 |
|
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.quad ni_syscall /* streams2 */
|
| 322 |
|
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.quad stub32_vfork /* 190 */
|
| 323 |
|
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.quad sys32_getrlimit
|
| 324 |
|
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.quad sys32_mmap2
|
| 325 |
|
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.quad sys32_truncate64
|
| 326 |
|
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.quad sys32_ftruncate64
|
| 327 |
|
|
.quad sys32_stat64 /* 195 */
|
| 328 |
|
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.quad sys32_lstat64
|
| 329 |
|
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.quad sys32_fstat64
|
| 330 |
|
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.quad sys_lchown
|
| 331 |
|
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.quad sys_getuid
|
| 332 |
|
|
.quad sys_getgid /* 200 */
|
| 333 |
|
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.quad sys_geteuid
|
| 334 |
|
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.quad sys_getegid
|
| 335 |
|
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.quad sys_setreuid
|
| 336 |
|
|
.quad sys_setregid
|
| 337 |
|
|
.quad sys_getgroups /* 205 */
|
| 338 |
|
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.quad sys_setgroups
|
| 339 |
|
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.quad sys_fchown
|
| 340 |
|
|
.quad sys_setresuid
|
| 341 |
|
|
.quad sys_getresuid
|
| 342 |
|
|
.quad sys_setresgid /* 210 */
|
| 343 |
|
|
.quad sys_getresgid
|
| 344 |
|
|
.quad sys_chown
|
| 345 |
|
|
.quad sys_setuid
|
| 346 |
|
|
.quad sys_setgid
|
| 347 |
|
|
.quad sys_setfsuid /* 215 */
|
| 348 |
|
|
.quad sys_setfsgid
|
| 349 |
|
|
.quad sys_pivot_root
|
| 350 |
|
|
.quad sys_mincore
|
| 351 |
|
|
.quad sys_madvise
|
| 352 |
|
|
.quad sys_getdents64 /* 220 getdents64 */
|
| 353 |
|
|
.quad sys32_fcntl64
|
| 354 |
|
|
.quad sys_ni_syscall /* tux */
|
| 355 |
|
|
.quad sys_ni_syscall /* security */
|
| 356 |
|
|
.quad sys_gettid
|
| 357 |
|
|
.quad sys_readahead /* 225 */
|
| 358 |
|
|
.quad quiet_ni_syscall /* xattr syscalls 226-237 */
|
| 359 |
|
|
.quad quiet_ni_syscall
|
| 360 |
|
|
.quad quiet_ni_syscall
|
| 361 |
|
|
.quad quiet_ni_syscall
|
| 362 |
|
|
.quad quiet_ni_syscall /* 230 */
|
| 363 |
|
|
.quad quiet_ni_syscall
|
| 364 |
|
|
.quad quiet_ni_syscall
|
| 365 |
|
|
.quad quiet_ni_syscall
|
| 366 |
|
|
.quad quiet_ni_syscall
|
| 367 |
|
|
.quad quiet_ni_syscall /* 235 */
|
| 368 |
|
|
.quad quiet_ni_syscall
|
| 369 |
|
|
.quad quiet_ni_syscall /* fremovexattr - 237 */
|
| 370 |
|
|
.quad sys_tkill
|
| 371 |
|
|
.quad sys_sendfile64
|
| 372 |
|
|
.quad quiet_ni_syscall /* futex */
|
| 373 |
|
|
.quad quiet_ni_syscall /* sched_setaffinity */
|
| 374 |
|
|
.quad quiet_ni_syscall /* sched_getaffinity */
|
| 375 |
|
|
ia32_syscall_end:
|
| 376 |
|
|
.rept IA32_NR_syscalls-(ia32_syscall_end-ia32_sys_call_table)/8
|
| 377 |
|
|
.quad ni_syscall
|
| 378 |
|
|
.endr
|
| 379 |
|
|
|
| 380 |
|
|
|
