entry.s

这个linux源代码是很全面的~基本完整了~使用c编译的~由于时间问题我没有亲自测试~但就算用来做参考资料也是非常好的

sys_sigreturn_glue:     
        la      %r2,SP_PTREGS(%r15)   # load pt_regs as parameter
        jg      sys_sigreturn         # branch to sys_sigreturn

#ifdef CONFIG_S390_SUPPORT
sys32_sigreturn_glue:     
        la      %r2,SP_PTREGS(%r15)   # load pt_regs as parameter
        jg      sys32_sigreturn       # branch to sys32_sigreturn
#endif

sys_rt_sigreturn_glue:     
        la      %r2,SP_PTREGS(%r15)   # load pt_regs as parameter
        jg      sys_rt_sigreturn      # branch to sys_sigreturn

#ifdef CONFIG_S390_SUPPORT
sys32_rt_sigreturn_glue:     
        la      %r2,SP_PTREGS(%r15)   # load pt_regs as parameter
        jg      sys32_rt_sigreturn    # branch to sys32_sigreturn
#endif

#
# sigsuspend and rt_sigsuspend need pt_regs as an additional
# parameter and they have to skip the store of %r2 into the
# user register %r2 because the return value was set in 
# sigsuspend and rt_sigsuspend already and must not be overwritten!
#

sys_sigsuspend_glue:    
        lgr     %r5,%r4               # move mask back
        lgr     %r4,%r3               # move history1 parameter
        lgr     %r3,%r2               # move history0 parameter
        la      %r2,SP_PTREGS(%r15)   # load pt_regs as first parameter
	la      %r14,6(%r14)          # skip store of return value
        jg      sys_sigsuspend        # branch to sys_sigsuspend

#ifdef CONFIG_S390_SUPPORT
sys32_sigsuspend_glue:    
	llgfr	%r4,%r4               # unsigned long			
        lgr     %r5,%r4               # move mask back
	lgfr	%r3,%r3               # int			
        lgr     %r4,%r3               # move history1 parameter
	lgfr	%r2,%r2               # int			
        lgr     %r3,%r2               # move history0 parameter
        la      %r2,SP_PTREGS(%r15)   # load pt_regs as first parameter
	la      %r14,6(%r14)          # skip store of return value
        jg      sys32_sigsuspend      # branch to sys32_sigsuspend
#endif

sys_rt_sigsuspend_glue: 
        lgr     %r4,%r3               # move sigsetsize parameter
        lgr     %r3,%r2               # move unewset parameter
        la      %r2,SP_PTREGS(%r15)   # load pt_regs as first parameter
	la      %r14,6(%r14)          # skip store of return value
        jg      sys_rt_sigsuspend     # branch to sys_rt_sigsuspend

#ifdef CONFIG_S390_SUPPORT
sys32_rt_sigsuspend_glue: 
	llgfr	%r3,%r3               # size_t			
        lgr     %r4,%r3               # move sigsetsize parameter
	llgtr	%r2,%r2               # sigset_emu31_t *
        lgr     %r3,%r2               # move unewset parameter
        la      %r2,SP_PTREGS(%r15)   # load pt_regs as first parameter
	la      %r14,6(%r14)          # skip store of return value
        jg      sys32_rt_sigsuspend   # branch to sys32_rt_sigsuspend
#endif

sys_sigaltstack_glue:
        la      %r4,SP_PTREGS(%r15)   # load pt_regs as parameter
        jg      sys_sigaltstack       # branch to sys_sigreturn

#ifdef CONFIG_S390_SUPPORT
sys32_sigaltstack_glue:
        la      %r4,SP_PTREGS(%r15)   # load pt_regs as parameter
        jg      sys32_sigaltstack_wrapper # branch to sys_sigreturn
#endif

#ifdef CONFIG_S390_SUPPORT
#define SYSCALL(esame,esa) esame,esa
#else
#define SYSCALL(esame,esa) esame,sys_ni_syscall
#endif

	.globl  sys_call_table	
sys_call_table:
        .long  SYSCALL(sys_ni_syscall,sys_ni_syscall) /* 0 */
        .long  SYSCALL(sys_exit,sys32_exit_wrapper)
        .long  SYSCALL(sys_fork_glue,sys_fork_glue)
        .long  SYSCALL(sys_read,sys32_read_wrapper)
        .long  SYSCALL(sys_write,sys32_write_wrapper)
        .long  SYSCALL(sys_open,sys32_open_wrapper)             /* 5 */
        .long  SYSCALL(sys_close,sys32_close_wrapper)
        .long  SYSCALL(sys_ni_syscall,sys_ni_syscall) /* old waitpid syscall */
        .long  SYSCALL(sys_creat,sys32_creat_wrapper)
        .long  SYSCALL(sys_link,sys32_link_wrapper)
        .long  SYSCALL(sys_unlink,sys32_unlink_wrapper)         /* 10 */
        .long  SYSCALL(sys_execve_glue,sys32_execve_glue)
        .long  SYSCALL(sys_chdir,sys32_chdir_wrapper)
        .long  SYSCALL(sys_ni_syscall,sys32_time_wrapper) /* old time syscall */
        .long  SYSCALL(sys_mknod,sys32_mknod_wrapper)
        .long  SYSCALL(sys_chmod,sys32_chmod_wrapper)           /* 15 */
        .long  SYSCALL(sys_ni_syscall,sys32_lchown16_wrapper)   /* old lchown16 syscall*/
        .long  SYSCALL(sys_ni_syscall,sys_ni_syscall) /* old break syscall */
        .long  SYSCALL(sys_ni_syscall,sys_ni_syscall) /* old stat syscall */
        .long  SYSCALL(sys_lseek,sys32_lseek_wrapper)
        .long  SYSCALL(sys_getpid,sys_getpid) /* 20 */
        .long  SYSCALL(sys_mount,sys32_mount_wrapper)
        .long  SYSCALL(sys_oldumount,sys32_oldumount_wrapper)
        .long  SYSCALL(sys_ni_syscall,sys32_setuid16_wrapper)   /* old setuid16 syscall*/
        .long  SYSCALL(sys_ni_syscall,sys32_getuid16)   /* old getuid16 syscall*/
        .long  SYSCALL(sys_ni_syscall,sys_ni_syscall) /* 25 old stime syscall */
        .long  SYSCALL(sys_ptrace,sys32_ptrace_wrapper)
        .long  SYSCALL(sys_alarm,sys32_alarm_wrapper)
        .long  SYSCALL(sys_ni_syscall,sys_ni_syscall) /* old fstat syscall */
        .long  SYSCALL(sys_pause,sys32_pause)
        .long  SYSCALL(sys_utime,sys32_utime_wrapper)           /* 30 */
        .long  SYSCALL(sys_ni_syscall,sys_ni_syscall) /* old stty syscall */
        .long  SYSCALL(sys_ni_syscall,sys_ni_syscall) /* old gtty syscall */
        .long  SYSCALL(sys_access,sys32_access_wrapper)
        .long  SYSCALL(sys_nice,sys32_nice_wrapper)
        .long  SYSCALL(sys_ni_syscall,sys_ni_syscall) /* old ftime syscall */
        .long  SYSCALL(sys_sync,sys_sync)
        .long  SYSCALL(sys_kill,sys32_kill_wrapper)
        .long  SYSCALL(sys_rename,sys32_rename_wrapper)
        .long  SYSCALL(sys_mkdir,sys32_mkdir_wrapper)
        .long  SYSCALL(sys_rmdir,sys32_rmdir_wrapper)           /* 40 */
        .long  SYSCALL(sys_dup,sys32_dup_wrapper)
        .long  SYSCALL(sys_pipe,sys32_pipe_wrapper)
        .long  SYSCALL(sys_times,sys32_times_wrapper)
        .long  SYSCALL(sys_ni_syscall,sys_ni_syscall) /* old prof syscall */
        .long  SYSCALL(sys_brk,sys32_brk_wrapper)               /* 45 */
        .long  SYSCALL(sys_ni_syscall,sys32_setgid16)   /* old setgid16 syscall*/
        .long  SYSCALL(sys_ni_syscall,sys32_getgid16)   /* old getgid16 syscall*/
        .long  SYSCALL(sys_signal,sys32_signal_wrapper)
        .long  SYSCALL(sys_ni_syscall,sys32_geteuid16)  /* old geteuid16 syscall */
        .long  SYSCALL(sys_ni_syscall,sys32_getegid16)  /* old getegid16 syscall */
        .long  SYSCALL(sys_acct,sys32_acct_wrapper)
        .long  SYSCALL(sys_umount,sys32_umount_wrapper)
        .long  SYSCALL(sys_ni_syscall,sys_ni_syscall) /* old lock syscall */
        .long  SYSCALL(sys_ioctl,sys32_ioctl_wrapper)
        .long  SYSCALL(sys_fcntl,sys32_fcntl_wrapper)   /* 55 */
        .long  SYSCALL(sys_ni_syscall,sys_ni_syscall) /* intel mpx syscall */
        .long  SYSCALL(sys_setpgid,sys32_setpgid_wrapper)
        .long  SYSCALL(sys_ni_syscall,sys_ni_syscall) /* old ulimit syscall */
        .long  SYSCALL(sys_ni_syscall,sys_ni_syscall) /* old uname syscall */
        .long  SYSCALL(sys_umask,sys32_umask_wrapper)           /* 60 */
        .long  SYSCALL(sys_chroot,sys32_chroot_wrapper)
        .long  SYSCALL(sys_ustat,sys32_ustat_wrapper)
        .long  SYSCALL(sys_dup2,sys32_dup2_wrapper)
        .long  SYSCALL(sys_getppid,sys_getppid)
        .long  SYSCALL(sys_getpgrp,sys_getpgrp)       /* 65 */
        .long  SYSCALL(sys_setsid,sys_setsid)
        .long  SYSCALL(sys_sigaction,sys32_sigaction_wrapper)
        .long  SYSCALL(sys_ni_syscall,sys_ni_syscall) /* old sgetmask syscall*/
        .long  SYSCALL(sys_ni_syscall,sys_ni_syscall) /* old ssetmask syscall*/
        .long  SYSCALL(sys_ni_syscall,sys32_setreuid16_wrapper) /* old setreuid16 syscall */
        .long  SYSCALL(sys_ni_syscall,sys32_setregid16_wrapper) /* old setregid16 syscall */
        .long  SYSCALL(sys_sigsuspend_glue,sys32_sigsuspend_glue)
        .long  SYSCALL(sys_sigpending,sys32_sigpending_wrapper)
        .long  SYSCALL(sys_sethostname,sys32_sethostname_wrapper)
        .long  SYSCALL(sys_setrlimit,sys32_setrlimit_wrapper)   /* 75 */
        .long  SYSCALL(sys_getrlimit,sys32_old_getrlimit_wrapper) 
        .long  SYSCALL(sys_getrusage,sys32_getrusage_wrapper)
        .long  SYSCALL(sys_gettimeofday,sys32_gettimeofday_wrapper)
        .long  SYSCALL(sys_settimeofday,sys32_settimeofday_wrapper)
        .long  SYSCALL(sys_ni_syscall,sys32_getgroups16_wrapper) /* old getgroups16 syscall */
        .long  SYSCALL(sys_ni_syscall,sys32_setgroups16_wrapper) /* old setgroups16 syscall */
        .long  SYSCALL(sys_ni_syscall,sys_ni_syscall) /* old select syscall */
        .long  SYSCALL(sys_symlink,sys32_symlink_wrapper)
        .long  SYSCALL(sys_ni_syscall,sys_ni_syscall) /* old lstat syscall */
        .long  SYSCALL(sys_readlink,sys32_readlink_wrapper)     /* 85 */
        .long  SYSCALL(sys_uselib,sys32_uselib_wrapper)
        .long  SYSCALL(sys_swapon,sys32_swapon_wrapper)
        .long  SYSCALL(sys_reboot,sys32_reboot_wrapper)
        .long  SYSCALL(sys_ni_syscall,old32_readdir_wrapper) /* old readdir syscall */
        .long  SYSCALL(old_mmap,old32_mmap_wrapper)       /* 90 */
        .long  SYSCALL(sys_munmap,sys32_munmap_wrapper)
        .long  SYSCALL(sys_truncate,sys32_truncate_wrapper)
        .long  SYSCALL(sys_ftruncate,sys32_ftruncate_wrapper)
        .long  SYSCALL(sys_fchmod,sys32_fchmod_wrapper)
        .long  SYSCALL(sys_ni_syscall,sys32_fchown16_wrapper)   /* old fchown16 syscall*/
        .long  SYSCALL(sys_getpriority,sys32_getpriority_wrapper)
        .long  SYSCALL(sys_setpriority,sys32_setpriority_wrapper)
        .long  SYSCALL(sys_ni_syscall,sys_ni_syscall) /* old profil syscall */
        .long  SYSCALL(sys_statfs,sys32_statfs_wrapper)
        .long  SYSCALL(sys_fstatfs,sys32_fstatfs_wrapper)   /* 100 */
        .long  SYSCALL(sys_ni_syscall,sys_ni_syscall)
        .long  SYSCALL(sys_socketcall,sys32_socketcall_wrapper)
        .long  SYSCALL(sys_syslog,sys32_syslog_wrapper)
        .long  SYSCALL(sys_setitimer,sys32_setitimer_wrapper)
        .long  SYSCALL(sys_getitimer,sys32_getitimer_wrapper)   /* 105 */
        .long  SYSCALL(sys_newstat,sys32_newstat_wrapper)
        .long  SYSCALL(sys_newlstat,sys32_newlstat_wrapper)
        .long  SYSCALL(sys_newfstat,sys32_newfstat_wrapper)
        .long  SYSCALL(sys_ni_syscall,sys_ni_syscall) /* old uname syscall */
        .long  SYSCALL(sys_ni_syscall,sys_ni_syscall) /* iopl for i386 */
        .long  SYSCALL(sys_vhangup,sys_vhangup)
        .long  SYSCALL(sys_ni_syscall,sys_ni_syscall) /* old "idle" system call */
        .long  SYSCALL(sys_ni_syscall,sys_ni_syscall) /* vm86old for i386 */
        .long  SYSCALL(sys_wait4,sys32_wait4_wrapper)
        .long  SYSCALL(sys_swapoff,sys32_swapoff_wrapper)       /* 115 */
        .long  SYSCALL(sys_sysinfo,sys32_sysinfo_wrapper)
        .long  SYSCALL(sys_ipc,sys32_ipc_wrapper)
        .long  SYSCALL(sys_fsync,sys32_fsync_wrapper)
        .long  SYSCALL(sys_sigreturn_glue,sys32_sigreturn_glue)
        .long  SYSCALL(sys_clone_glue,sys_clone_glue) /* 120 */
        .long  SYSCALL(sys_setdomainname,sys32_setdomainname_wrapper)
        .long  SYSCALL(sys_newuname,sys32_newuname_wrapper)
        .long  SYSCALL(sys_ni_syscall,sys_ni_syscall) /* modify_ldt for i386 */
        .long  SYSCALL(sys_adjtimex,sys32_adjtimex_wrapper)
        .long  SYSCALL(sys_mprotect,sys32_mprotect_wrapper) /* 125 */
        .long  SYSCALL(sys_sigprocmask,sys32_sigprocmask_wrapper)
        .long  SYSCALL(sys_create_module,sys32_create_module_wrapper)
        .long  SYSCALL(sys_init_module,sys32_init_module_wrapper)
        .long  SYSCALL(sys_delete_module,sys32_delete_module_wrapper)
        .long  SYSCALL(sys_get_kernel_syms,sys32_get_kernel_syms_wrapper) /* 130 */
        .long  SYSCALL(sys_quotactl,sys32_quotactl_wrapper)
        .long  SYSCALL(sys_getpgid,sys32_getpgid_wrapper)
        .long  SYSCALL(sys_fchdir,sys32_fchdir_wrapper)
        .long  SYSCALL(sys_bdflush,sys32_bdflush_wrapper)
        .long  SYSCALL(sys_sysfs,sys32_sysfs_wrapper)           /* 135 */
        .long  SYSCALL(sys_personality,sys32_personality_wrapper)
        .long  SYSCALL(sys_ni_syscall,sys_ni_syscall) /* for afs_syscall */
        .long  SYSCALL(sys_ni_syscall,sys32_setfsuid16_wrapper) /* old setfsuid16 syscall */
        .long  SYSCALL(sys_ni_syscall,sys32_setfsgid16_wrapper) /* old setfsgid16 syscall */
        .long  SYSCALL(sys_llseek,sys32_llseek_wrapper)         /* 140 */
        .long  SYSCALL(sys_getdents,sys32_getdents_wrapper)
        .long  SYSCALL(sys_select,sys32_select_wrapper)
        .long  SYSCALL(sys_flock,sys32_flock_wrapper)
        .long  SYSCALL(sys_msync,sys32_msync_wrapper)
        .long  SYSCALL(sys_readv,sys32_readv_wrapper)           /* 145 */
        .long  SYSCALL(sys_writev,sys32_writev_wrapper)
        .long  SYSCALL(sys_getsid,sys32_getsid_wrapper)
        .long  SYSCALL(sys_fdatasync,sys32_fdatasync_wrapper)
        .long  SYSCALL(sys_sysctl,sys_ni_syscall)
        .long  SYSCALL(sys_mlock,sys32_mlock_wrapper)           /* 150 */
        .long  SYSCALL(sys_munlock,sys32_munlock_wrapper)
        .long  SYSCALL(sys_mlockall,sys32_mlockall_wrapper)
        .long  SYSCALL(sys_munlockall,sys_munlockall)
        .long  SYSCALL(sys_sched_setparam,sys32_sched_setparam_wrapper)
        .long  SYSCALL(sys_sched_getparam,sys32_sched_getparam_wrapper) /* 155 */
        .long  SYSCALL(sys_sched_setscheduler,sys32_sched_setscheduler_wrapper)
        .long  SYSCALL(sys_sched_getscheduler,sys32_sched_getscheduler_wrapper)
        .long  SYSCALL(sys_sched_yield,sys_sched_yield)
        .long  SYSCALL(sys_sched_get_priority_max,sys32_sched_get_priority_max_wrapper)
        .long  SYSCALL(sys_sched_get_priority_min,sys32_sched_get_priority_min_wrapper)
        .long  SYSCALL(sys_sched_rr_get_interval,sys32_sched_rr_get_interval_wrapper)
        .long  SYSCALL(sys_nanosleep,sys32_nanosleep_wrapper)
        .long  SYSCALL(sys_mremap,sys32_mremap_wrapper)
        .long  SYSCALL(sys_ni_syscall,sys32_setresuid16_wrapper) /* old setresuid16 syscall */
        .long  SYSCALL(sys_ni_syscall,sys32_getresuid16_wrapper) /* old getresuid16 syscall */
        .long  SYSCALL(sys_ni_syscall,sys_ni_syscall) /* for vm86 */
        .long  SYSCALL(sys_query_module,sys32_query_module_wrapper)
        .long  SYSCALL(sys_poll,sys32_poll_wrapper)
        .long  SYSCALL(sys_nfsservctl,sys32_nfsservctl_wrapper)
        .long  SYSCALL(sys_ni_syscall,sys32_setresgid16_wrapper) /* old setresgid16 syscall */
        .long  SYSCALL(sys_ni_syscall,sys32_getresgid16_wrapper) /* old getresgid16 syscall */
        .long  SYSCALL(sys_prctl,sys32_prctl_wrapper)
        .long  SYSCALL(sys_rt_sigreturn_glue,sys32_rt_sigreturn_glue)
        .long  SYSCALL(sys_rt_sigaction,sys32_rt_sigaction_wrapper)
        .long  SYSCALL(sys_rt_sigprocmask,sys32_rt_sigprocmask_wrapper) /* 175 */
        .long  SYSCALL(sys_rt_sigpending,sys32_rt_sigpending_wrapper)
        .long  SYSCALL(sys_rt_sigtimedwait,sys32_rt_sigtimedwait_wrapper)
        .long  SYSCALL(sys_rt_sigqueueinfo,sys32_rt_sigqueueinfo_wrapper)
        .long  SYSCALL(sys_rt_sigsuspend_glue,sys32_rt_sigsuspend_glue)
        .long  SYSCALL(sys_pread,sys32_pread_wrapper)           /* 180 */
        .long  SYSCALL(sys_pwrite,sys32_pwrite_wrapper)
        .long  SYSCALL(sys_ni_syscall,sys32_chown16_wrapper)    /* old chown16 syscall */
        .long  SYSCALL(sys_getcwd,sys32_getcwd_wrapper)
        .long  SYSCALL(sys_capget,sys32_capget_wrapper)
        .long  SYSCALL(sys_capset,sys32_capset_wrapper)         /* 185 */
        .long  SYSCALL(sys_sigaltstack_glue,sys32_sigaltstack_glue)
        .long  SYSCALL(sys_sendfile,sys32_sendfile_wrapper)
        .long  SYSCALL(sys_ni_syscall,sys_ni_syscall) /* streams1 */
        .long  SYSCALL(sys_ni_syscall,sys_ni_syscall) /* streams2 */
        .long  SYSCALL(sys_vfork_glue,sys_vfork_glue) /* 190 */
        .long  SYSCALL(sys_getrlimit,sys32_old_getrlimit_wrapper)
	.long  SYSCALL(sys_mmap2,sys32_mmap2_wrapper)
	.long  SYSCALL(sys_ni_syscall,sys32_truncate64_wrapper)
        .long  SYSCALL(sys_ni_syscall,sys32_ftruncate64_wrapper)
        .long  SYSCALL(sys_ni_syscall,sys32_stat64_wrapper)     /* 195 */
        .long  SYSCALL(sys_ni_syscall,sys32_lstat64_wrapper)   
        .long  SYSCALL(sys_ni_syscall,sys32_fstat64_wrapper)    
	.long  SYSCALL(sys_lchown,sys32_lchown_wrapper)
	.long  SYSCALL(sys_getuid,sys_getuid)
	.long  SYSCALL(sys_getgid,sys_getgid)         /* 200 */