entry.s

包括初始化、进程管理、进程通信、内存管理、设备管理、中断、文件系统、系统调用等精选源码分析。

	jmp error_code

ENTRY(device_not_available)
	pushl $-1		# mark this as an int
	SAVE_ALL
	GET_CURRENT(%ebx)
	pushl $ret_from_exception
	movl %cr0,%eax
	testl $0x4,%eax			# EM (math emulation bit)
	je SYMBOL_NAME(math_state_restore)
	pushl $0		# temporary storage for ORIG_EIP
	call  SYMBOL_NAME(math_emulate)
	addl $4,%esp
	ret

ENTRY(debug)
	pushl $0
	pushl $ SYMBOL_NAME(do_debug)
	jmp error_code

ENTRY(nmi)
	pushl %eax
	SAVE_ALL
	movl %esp,%edx
	pushl $0
	pushl %edx
	call SYMBOL_NAME(do_nmi)
	addl $8,%esp
	RESTORE_ALL

ENTRY(int3)
	pushl $0
	pushl $ SYMBOL_NAME(do_int3)
	jmp error_code

ENTRY(overflow)
	pushl $0
	pushl $ SYMBOL_NAME(do_overflow)
	jmp error_code

ENTRY(bounds)
	pushl $0
	pushl $ SYMBOL_NAME(do_bounds)
	jmp error_code

ENTRY(invalid_op)
	pushl $0
	pushl $ SYMBOL_NAME(do_invalid_op)
	jmp error_code

ENTRY(coprocessor_segment_overrun)
	pushl $0
	pushl $ SYMBOL_NAME(do_coprocessor_segment_overrun)
	jmp error_code

ENTRY(double_fault)
	pushl $ SYMBOL_NAME(do_double_fault)
	jmp error_code

ENTRY(invalid_TSS)
	pushl $ SYMBOL_NAME(do_invalid_TSS)
	jmp error_code

ENTRY(segment_not_present)
	pushl $ SYMBOL_NAME(do_segment_not_present)
	jmp error_code

ENTRY(stack_segment)
	pushl $ SYMBOL_NAME(do_stack_segment)
	jmp error_code

ENTRY(general_protection)
	pushl $ SYMBOL_NAME(do_general_protection)
	jmp error_code

ENTRY(alignment_check)
	pushl $ SYMBOL_NAME(do_alignment_check)
	jmp error_code

ENTRY(page_fault)
	pushl $ SYMBOL_NAME(do_page_fault)
	jmp error_code

ENTRY(machine_check)
	pushl $0
	pushl $ SYMBOL_NAME(do_machine_check)
	jmp error_code

ENTRY(spurious_interrupt_bug)
	pushl $0
	pushl $ SYMBOL_NAME(do_spurious_interrupt_bug)
	jmp error_code

.data
ENTRY(sys_call_table)
	.long SYMBOL_NAME(sys_ni_syscall)	/* 0  -  old "setup()" system call*/
	.long SYMBOL_NAME(sys_exit)
	.long SYMBOL_NAME(sys_fork)
	.long SYMBOL_NAME(sys_read)
	.long SYMBOL_NAME(sys_write)
	.long SYMBOL_NAME(sys_open)		/* 5 */
	.long SYMBOL_NAME(sys_close)
	.long SYMBOL_NAME(sys_waitpid)
	.long SYMBOL_NAME(sys_creat)
	.long SYMBOL_NAME(sys_link)
	.long SYMBOL_NAME(sys_unlink)		/* 10 */
	.long SYMBOL_NAME(sys_execve)
	.long SYMBOL_NAME(sys_chdir)
	.long SYMBOL_NAME(sys_time)
	.long SYMBOL_NAME(sys_mknod)
	.long SYMBOL_NAME(sys_chmod)		/* 15 */
	.long SYMBOL_NAME(sys_lchown16)
	.long SYMBOL_NAME(sys_ni_syscall)				/* old break syscall holder */
	.long SYMBOL_NAME(sys_stat)
	.long SYMBOL_NAME(sys_lseek)
	.long SYMBOL_NAME(sys_getpid)		/* 20 */
	.long SYMBOL_NAME(sys_mount)
	.long SYMBOL_NAME(sys_oldumount)
	.long SYMBOL_NAME(sys_setuid16)
	.long SYMBOL_NAME(sys_getuid16)
	.long SYMBOL_NAME(sys_stime)		/* 25 */
	.long SYMBOL_NAME(sys_ptrace)
	.long SYMBOL_NAME(sys_alarm)
	.long SYMBOL_NAME(sys_fstat)
	.long SYMBOL_NAME(sys_pause)
	.long SYMBOL_NAME(sys_utime)		/* 30 */
	.long SYMBOL_NAME(sys_ni_syscall)				/* old stty syscall holder */
	.long SYMBOL_NAME(sys_ni_syscall)				/* old gtty syscall holder */
	.long SYMBOL_NAME(sys_access)
	.long SYMBOL_NAME(sys_nice)
	.long SYMBOL_NAME(sys_ni_syscall)	/* 35 */		/* old ftime syscall holder */
	.long SYMBOL_NAME(sys_sync)
	.long SYMBOL_NAME(sys_kill)
	.long SYMBOL_NAME(sys_rename)
	.long SYMBOL_NAME(sys_mkdir)
	.long SYMBOL_NAME(sys_rmdir)		/* 40 */
	.long SYMBOL_NAME(sys_dup)
	.long SYMBOL_NAME(sys_pipe)
	.long SYMBOL_NAME(sys_times)
	.long SYMBOL_NAME(sys_ni_syscall)				/* old prof syscall holder */
	.long SYMBOL_NAME(sys_brk)		/* 45 */
	.long SYMBOL_NAME(sys_setgid16)
	.long SYMBOL_NAME(sys_getgid16)
	.long SYMBOL_NAME(sys_signal)
	.long SYMBOL_NAME(sys_geteuid16)
	.long SYMBOL_NAME(sys_getegid16)	/* 50 */
	.long SYMBOL_NAME(sys_acct)
	.long SYMBOL_NAME(sys_umount)					/* recycled never used phys() */
	.long SYMBOL_NAME(sys_ni_syscall)				/* old lock syscall holder */
	.long SYMBOL_NAME(sys_ioctl)
	.long SYMBOL_NAME(sys_fcntl)		/* 55 */
	.long SYMBOL_NAME(sys_ni_syscall)				/* old mpx syscall holder */
	.long SYMBOL_NAME(sys_setpgid)
	.long SYMBOL_NAME(sys_ni_syscall)				/* old ulimit syscall holder */
	.long SYMBOL_NAME(sys_olduname)
	.long SYMBOL_NAME(sys_umask)		/* 60 */
	.long SYMBOL_NAME(sys_chroot)
	.long SYMBOL_NAME(sys_ustat)
	.long SYMBOL_NAME(sys_dup2)
	.long SYMBOL_NAME(sys_getppid)
	.long SYMBOL_NAME(sys_getpgrp)		/* 65 */
	.long SYMBOL_NAME(sys_setsid)
	.long SYMBOL_NAME(sys_sigaction)
	.long SYMBOL_NAME(sys_sgetmask)
	.long SYMBOL_NAME(sys_ssetmask)
	.long SYMBOL_NAME(sys_setreuid16)	/* 70 */
	.long SYMBOL_NAME(sys_setregid16)
	.long SYMBOL_NAME(sys_sigsuspend)
	.long SYMBOL_NAME(sys_sigpending)
	.long SYMBOL_NAME(sys_sethostname)
	.long SYMBOL_NAME(sys_setrlimit)	/* 75 */
	.long SYMBOL_NAME(sys_old_getrlimit)
	.long SYMBOL_NAME(sys_getrusage)
	.long SYMBOL_NAME(sys_gettimeofday)
	.long SYMBOL_NAME(sys_settimeofday)
	.long SYMBOL_NAME(sys_getgroups16)	/* 80 */
	.long SYMBOL_NAME(sys_setgroups16)
	.long SYMBOL_NAME(old_select)
	.long SYMBOL_NAME(sys_symlink)
	.long SYMBOL_NAME(sys_lstat)
	.long SYMBOL_NAME(sys_readlink)		/* 85 */
	.long SYMBOL_NAME(sys_uselib)
	.long SYMBOL_NAME(sys_swapon)
	.long SYMBOL_NAME(sys_reboot)
	.long SYMBOL_NAME(old_readdir)
	.long SYMBOL_NAME(old_mmap)		/* 90 */
	.long SYMBOL_NAME(sys_munmap)
	.long SYMBOL_NAME(sys_truncate)
	.long SYMBOL_NAME(sys_ftruncate)
	.long SYMBOL_NAME(sys_fchmod)
	.long SYMBOL_NAME(sys_fchown16)		/* 95 */
	.long SYMBOL_NAME(sys_getpriority)
	.long SYMBOL_NAME(sys_setpriority)
	.long SYMBOL_NAME(sys_ni_syscall)				/* old profil syscall holder */
	.long SYMBOL_NAME(sys_statfs)
	.long SYMBOL_NAME(sys_fstatfs)		/* 100 */
	.long SYMBOL_NAME(sys_ioperm)
	.long SYMBOL_NAME(sys_socketcall)
	.long SYMBOL_NAME(sys_syslog)
	.long SYMBOL_NAME(sys_setitimer)
	.long SYMBOL_NAME(sys_getitimer)	/* 105 */
	.long SYMBOL_NAME(sys_newstat)
	.long SYMBOL_NAME(sys_newlstat)
	.long SYMBOL_NAME(sys_newfstat)
	.long SYMBOL_NAME(sys_uname)
	.long SYMBOL_NAME(sys_iopl)		/* 110 */
	.long SYMBOL_NAME(sys_vhangup)
	.long SYMBOL_NAME(sys_ni_syscall)	/* old "idle" system call */
	.long SYMBOL_NAME(sys_vm86old)
	.long SYMBOL_NAME(sys_wait4)
	.long SYMBOL_NAME(sys_swapoff)		/* 115 */
	.long SYMBOL_NAME(sys_sysinfo)
	.long SYMBOL_NAME(sys_ipc)
	.long SYMBOL_NAME(sys_fsync)
	.long SYMBOL_NAME(sys_sigreturn)
	.long SYMBOL_NAME(sys_clone)		/* 120 */
	.long SYMBOL_NAME(sys_setdomainname)
	.long SYMBOL_NAME(sys_newuname)
	.long SYMBOL_NAME(sys_modify_ldt)
	.long SYMBOL_NAME(sys_adjtimex)
	.long SYMBOL_NAME(sys_mprotect)		/* 125 */
	.long SYMBOL_NAME(sys_sigprocmask)
	.long SYMBOL_NAME(sys_create_module)
	.long SYMBOL_NAME(sys_init_module)
	.long SYMBOL_NAME(sys_delete_module)
	.long SYMBOL_NAME(sys_get_kernel_syms)	/* 130 */
	.long SYMBOL_NAME(sys_quotactl)
	.long SYMBOL_NAME(sys_getpgid)
	.long SYMBOL_NAME(sys_fchdir)
	.long SYMBOL_NAME(sys_bdflush)
	.long SYMBOL_NAME(sys_sysfs)		/* 135 */
	.long SYMBOL_NAME(sys_personality)
	.long SYMBOL_NAME(sys_ni_syscall)	/* for afs_syscall */
	.long SYMBOL_NAME(sys_setfsuid16)
	.long SYMBOL_NAME(sys_setfsgid16)
	.long SYMBOL_NAME(sys_llseek)		/* 140 */
	.long SYMBOL_NAME(sys_getdents)
	.long SYMBOL_NAME(sys_select)
	.long SYMBOL_NAME(sys_flock)
	.long SYMBOL_NAME(sys_msync)
	.long SYMBOL_NAME(sys_readv)		/* 145 */
	.long SYMBOL_NAME(sys_writev)
	.long SYMBOL_NAME(sys_getsid)
	.long SYMBOL_NAME(sys_fdatasync)
	.long SYMBOL_NAME(sys_sysctl)
	.long SYMBOL_NAME(sys_mlock)		/* 150 */
	.long SYMBOL_NAME(sys_munlock)
	.long SYMBOL_NAME(sys_mlockall)
	.long SYMBOL_NAME(sys_munlockall)
	.long SYMBOL_NAME(sys_sched_setparam)
	.long SYMBOL_NAME(sys_sched_getparam)   /* 155 */
	.long SYMBOL_NAME(sys_sched_setscheduler)
	.long SYMBOL_NAME(sys_sched_getscheduler)
	.long SYMBOL_NAME(sys_sched_yield)
	.long SYMBOL_NAME(sys_sched_get_priority_max)
	.long SYMBOL_NAME(sys_sched_get_priority_min)  /* 160 */
	.long SYMBOL_NAME(sys_sched_rr_get_interval)
	.long SYMBOL_NAME(sys_nanosleep)
	.long SYMBOL_NAME(sys_mremap)
	.long SYMBOL_NAME(sys_setresuid16)
	.long SYMBOL_NAME(sys_getresuid16)	/* 165 */
	.long SYMBOL_NAME(sys_vm86)
	.long SYMBOL_NAME(sys_query_module)
	.long SYMBOL_NAME(sys_poll)
	.long SYMBOL_NAME(sys_nfsservctl)
	.long SYMBOL_NAME(sys_setresgid16)	/* 170 */
	.long SYMBOL_NAME(sys_getresgid16)
	.long SYMBOL_NAME(sys_prctl)
	.long SYMBOL_NAME(sys_rt_sigreturn)
	.long SYMBOL_NAME(sys_rt_sigaction)
	.long SYMBOL_NAME(sys_rt_sigprocmask)	/* 175 */
	.long SYMBOL_NAME(sys_rt_sigpending)
	.long SYMBOL_NAME(sys_rt_sigtimedwait)
	.long SYMBOL_NAME(sys_rt_sigqueueinfo)
	.long SYMBOL_NAME(sys_rt_sigsuspend)
	.long SYMBOL_NAME(sys_pread)		/* 180 */
	.long SYMBOL_NAME(sys_pwrite)
	.long SYMBOL_NAME(sys_chown16)
	.long SYMBOL_NAME(sys_getcwd)
	.long SYMBOL_NAME(sys_capget)
	.long SYMBOL_NAME(sys_capset)           /* 185 */
	.long SYMBOL_NAME(sys_sigaltstack)
	.long SYMBOL_NAME(sys_sendfile)
	.long SYMBOL_NAME(sys_ni_syscall)		/* streams1 */
	.long SYMBOL_NAME(sys_ni_syscall)		/* streams2 */
	.long SYMBOL_NAME(sys_vfork)            /* 190 */
	.long SYMBOL_NAME(sys_getrlimit)
	.long SYMBOL_NAME(sys_mmap2)
	.long SYMBOL_NAME(sys_truncate64)
	.long SYMBOL_NAME(sys_ftruncate64)
	.long SYMBOL_NAME(sys_stat64)		/* 195 */
	.long SYMBOL_NAME(sys_lstat64)
	.long SYMBOL_NAME(sys_fstat64)
	.long SYMBOL_NAME(sys_lchown)
	.long SYMBOL_NAME(sys_getuid)
	.long SYMBOL_NAME(sys_getgid)		/* 200 */
	.long SYMBOL_NAME(sys_geteuid)
	.long SYMBOL_NAME(sys_getegid)
	.long SYMBOL_NAME(sys_setreuid)
	.long SYMBOL_NAME(sys_setregid)
	.long SYMBOL_NAME(sys_getgroups)	/* 205 */
	.long SYMBOL_NAME(sys_setgroups)
	.long SYMBOL_NAME(sys_fchown)
	.long SYMBOL_NAME(sys_setresuid)
	.long SYMBOL_NAME(sys_getresuid)
	.long SYMBOL_NAME(sys_setresgid)	/* 210 */
	.long SYMBOL_NAME(sys_getresgid)
	.long SYMBOL_NAME(sys_chown)
	.long SYMBOL_NAME(sys_setuid)
	.long SYMBOL_NAME(sys_setgid)
	.long SYMBOL_NAME(sys_setfsuid)		/* 215 */
	.long SYMBOL_NAME(sys_setfsgid)
	.long SYMBOL_NAME(sys_pivot_root)
	.long SYMBOL_NAME(sys_mincore)
	.long SYMBOL_NAME(sys_madvise)
	.long SYMBOL_NAME(sys_getdents64)	/* 220 */
	.long SYMBOL_NAME(sys_fcntl64)
	.long SYMBOL_NAME(sys_ni_syscall)	/* reserved for TUX */

	/*
	 * NOTE!! This doesn't have to be exact - we just have
	 * to make sure we have _enough_ of the "sys_ni_syscall"
	 * entries. Don't panic if you notice that this hasn't
	 * been shrunk every time we add a new system call.
	 */
	.rept NR_syscalls-221
		.long SYMBOL_NAME(sys_ni_syscall)
	.endr