entry.s

microwindows移植到S3C44B0的源码

/*	bfextu %sp@(PT_VECTOR){#4,#10},%d0 */
	movew	%sp@(PT_VECTOR), %d0
	and	#0x3ff, %d0

	movel	%sp,%sp@-
	movel	#0x42,%sp@- 		/*  put vector # on stack*/
	jbsr	SYMBOL_NAME(process_int)/*  process the IRQ*/
3:     	addql	#8,%sp			/*  pop parameters off stack*/
	bra	ret_from_interrupt

SYMBOL_NAME_LABEL(inthandler_wrap)
	SAVE_ALL_INT
	GET_CURRENT(%d0)
	addql	#1,SYMBOL_NAME(irq_stat)+CPUSTAT_LOCAL_IRQ_COUNT
					/*  put exception # in d0*/
/*	bfextu %sp@(PT_VECTOR){#4,#10},%d0 */
	movew	%sp@(PT_VECTOR), %d0
	and	#0x3ff, %d0

	movel	%sp,%sp@-
	movel	%d0,%sp@- 		/*  put vector # on stack*/
	jbsr	SYMBOL_NAME(process_int)/*  process the IRQ*/
3:     	addql	#8,%sp			/*  pop parameters off stack*/
	bra	ret_from_interrupt

SYMBOL_NAME_LABEL(inthandler)
	SAVE_ALL_INT
	GET_CURRENT(%d0)
	addql	#1,SYMBOL_NAME(irq_stat)+CPUSTAT_LOCAL_IRQ_COUNT
					/*  put exception # in d0*/
/*	bfextu %sp@(PT_VECTOR){#4,#10},%d0 */
	movew	%sp@(PT_VECTOR), %d0
	and	#0x3ff, %d0

	movel	%sp,%sp@-
	movel	%d0,%sp@- 		/*  put vector # on stack*/
	jbsr	SYMBOL_NAME(process_int)/*  process the IRQ*/
3:     	addql	#8,%sp			/*  pop parameters off stack*/
	bra	ret_from_interrupt
#endif

SYMBOL_NAME_LABEL(ret_from_interrupt)
	subql	#1,SYMBOL_NAME(irq_stat)+CPUSTAT_LOCAL_IRQ_COUNT
	jeq	1f
2:
	RESTORE_ALL
1:
#if 1
/*	bfextu  %sp@(PT_SR){#5,#3},%d0 */	/* Check for nested interrupt.*/
	moveb	%sp@(PT_SR), %d0
	and	#7, %d0

#if MAX_NOINT_IPL > 0
	cmpiw	#MAX_NOINT_IPL,%d0
#endif
	jhi	2b
#endif
	/* check if we need to do software interrupts */

	movel	SYMBOL_NAME(irq_stat)+CPUSTAT_SOFTIRQ_PENDING,%d0
	jeq	SYMBOL_NAME(ret_from_exception)

	pea	SYMBOL_NAME(ret_from_exception)
	jra	SYMBOL_NAME(do_softirq)


/* Handler for uninitialized and spurious interrupts */

SYMBOL_NAME_LABEL(trap)
SYMBOL_NAME_LABEL(bad_interrupt)
	addql	#1,SYMBOL_NAME(num_spurious)
	rte

ENTRY(sys_fork)
	SAVE_SWITCH_STACK	
	pea	%sp@(SWITCH_STACK_SIZE)
	jbsr	SYMBOL_NAME(m68k_fork)
	addql	#4,%sp
	RESTORE_SWITCH_STACK
	rts

ENTRY(sys_clone)
	SAVE_SWITCH_STACK
	pea	%sp@(SWITCH_STACK_SIZE)
	jbsr	SYMBOL_NAME(m68k_clone)
	addql	#4,%sp
	RESTORE_SWITCH_STACK
	rts

ENTRY(sys_vfork)
	SAVE_SWITCH_STACK	
	pea	%sp@(SWITCH_STACK_SIZE)
	jbsr	SYMBOL_NAME(m68k_vfork)
	addql	#4,%sp
	RESTORE_SWITCH_STACK
	rts

ENTRY(sys_sigsuspend)
	SAVE_SWITCH_STACK
	pea	%sp@(SWITCH_STACK_SIZE)
	jbsr	SYMBOL_NAME(do_sigsuspend)
	addql	#4,%sp
	RESTORE_SWITCH_STACK
	rts

ENTRY(sys_rt_sigsuspend)
	SAVE_SWITCH_STACK
	pea	%sp@(SWITCH_STACK_SIZE)
	jbsr	SYMBOL_NAME(do_rt_sigsuspend)
	addql	#4,%sp
	RESTORE_SWITCH_STACK
	rts

ENTRY(sys_sigreturn)
	SAVE_SWITCH_STACK
	jbsr	SYMBOL_NAME(do_sigreturn)
	RESTORE_SWITCH_STACK
	rts

ENTRY(sys_rt_sigreturn)
	SAVE_SWITCH_STACK
	jbsr	SYMBOL_NAME(do_rt_sigreturn)
	RESTORE_SWITCH_STACK
	rts

SYMBOL_NAME_LABEL(resume)
	/*
	 * Beware - when entering resume, prev (the current task) is
	 * in a0, next (the new task) is in a1,so don't change these
	 * registers until their contents are no longer needed.
	 */

	/* save sr */
	movew	%sr,%a0@(TASK_THREAD+THREAD_SR)
#ifdef USE_SFC_DFC
	/* save fs (sfc,%dfc) (may be pointing to kernel memory) */
	movec	%sfc,%d0
	movew	%d0,%a0@(TASK_THREAD+THREAD_FS)
#endif

	/* save non-scratch registers on stack */
	SAVE_SWITCH_STACK

	/* save usp */
	/* it is better to use a movel here instead of a movew 8*) */
	movel	%usp,%a2
	movel	%a2,%a0@(TASK_THREAD+THREAD_USP)

	/* save current kernel stack pointer */
	movel	%sp,%a0@(TASK_THREAD+THREAD_KSP)

	/* Return previous task in %d1 */
	movel   SYMBOL_NAME(_current_task),%d1

	/* switch to new task (a1 contains new task) */
	movel   %a1, SYMBOL_NAME(_current_task)

	/* restore the kernel stack pointer */
	movel	%a1@(TASK_THREAD+THREAD_KSP),%sp

	/* restore non-scratch registers */
	RESTORE_SWITCH_STACK

	/* restore user stack pointer */
	movel	%a1@(TASK_THREAD+THREAD_USP),%a0
	movel	%a0,%usp

#ifdef USE_SFC_DFC
	/* restore fs (sfc,%dfc) */
	movew	%a1@(TASK_THREAD+THREAD_FS),%a0
	movec	%a0,%sfc
	movec	%a0,%dfc
#endif
	/* restore status register */
	movew	%a1@(TASK_THREAD+THREAD_SR),%sr

	rts


.data
ALIGN
SYMBOL_NAME_LABEL(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_chown16)
	.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_ni_syscall)
	.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_ni_syscall)
	.long SYMBOL_NAME(sys_ni_syscall)	/* iopl for i386 */ /* 110 */
	.long SYMBOL_NAME(sys_vhangup)
	.long SYMBOL_NAME(sys_ni_syscall)	/* obsolete idle() syscall */
	.long SYMBOL_NAME(sys_ni_syscall)	/* vm86old for i386 */
	.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_cacheflush)	/* modify_ldt for i386 */
	.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_ni_syscall)	/* for 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_lchown16);
	.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_chown)
	.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_lchown)
	.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_ni_syscall)
	.long SYMBOL_NAME(sys_ni_syscall)
	.long SYMBOL_NAME(sys_getdents64)	/* 220 */
	.long SYMBOL_NAME(sys_gettid)
	.long SYMBOL_NAME(sys_tkill)

	.rept NR_syscalls-(.-SYMBOL_NAME(sys_call_table))/4
		.long SYMBOL_NAME(sys_ni_syscall)
	.endr