2 * linux/arch/h8300/kernel/sys_h8300.c
4 * This file contains various random system calls that
5 * have a non-standard calling sequence on the H8/300
9 #include <linux/errno.h>
10 #include <linux/sched.h>
12 #include <linux/smp.h>
13 #include <linux/sem.h>
14 #include <linux/msg.h>
15 #include <linux/shm.h>
16 #include <linux/stat.h>
17 #include <linux/syscalls.h>
18 #include <linux/mman.h>
19 #include <linux/file.h>
20 #include <linux/utsname.h>
22 #include <asm/setup.h>
23 #include <asm/uaccess.h>
24 #include <asm/cachectl.h>
25 #include <asm/traps.h>
27 #include <asm/unistd.h>
30 * sys_pipe() is the normal C calling standard for creating
31 * a pipe. It's not the way unix traditionally does this, though.
33 asmlinkage int sys_pipe(unsigned long * fildes)
40 if (copy_to_user(fildes, fd, 2*sizeof(int)))
46 /* common code for old and new mmaps */
47 static inline long do_mmap2(
48 unsigned long addr, unsigned long len,
49 unsigned long prot, unsigned long flags,
50 unsigned long fd, unsigned long pgoff)
53 struct file * file = NULL;
55 flags &= ~(MAP_EXECUTABLE | MAP_DENYWRITE);
56 if (!(flags & MAP_ANONYMOUS)) {
62 down_write(¤t->mm->mmap_sem);
63 error = do_mmap_pgoff(file, addr, len, prot, flags, pgoff);
64 up_write(¤t->mm->mmap_sem);
72 asmlinkage long sys_mmap2(unsigned long addr, unsigned long len,
73 unsigned long prot, unsigned long flags,
74 unsigned long fd, unsigned long pgoff)
76 return do_mmap2(addr, len, prot, flags, fd, pgoff);
80 * Perform the select(nd, in, out, ex, tv) and mmap() system
81 * calls. Linux/m68k cloned Linux/i386, which didn't use to be able to
82 * handle more than 4 system call parameters, so these system calls
83 * used a memory block for parameter passing..
86 struct mmap_arg_struct {
95 asmlinkage int old_mmap(struct mmap_arg_struct *arg)
97 struct mmap_arg_struct a;
100 if (copy_from_user(&a, arg, sizeof(a)))
104 if (a.offset & ~PAGE_MASK)
107 a.flags &= ~(MAP_EXECUTABLE | MAP_DENYWRITE);
109 error = do_mmap2(a.addr, a.len, a.prot, a.flags, a.fd, a.offset >> PAGE_SHIFT);
114 #if 0 /* DAVIDM - do we want this */
115 struct mmap_arg_struct64 {
120 __u64 offset; /* 64 bits */
124 asmlinkage long sys_mmap64(struct mmap_arg_struct64 *arg)
127 struct file * file = NULL;
128 struct mmap_arg_struct64 a;
131 if (copy_from_user(&a, arg, sizeof(a)))
134 if ((long)a.offset & ~PAGE_MASK)
137 pgoff = a.offset >> PAGE_SHIFT;
138 if ((a.offset >> PAGE_SHIFT) != pgoff)
141 if (!(a.flags & MAP_ANONYMOUS)) {
147 a.flags &= ~(MAP_EXECUTABLE | MAP_DENYWRITE);
149 down_write(¤t->mm->mmap_sem);
150 error = do_mmap_pgoff(file, a.addr, a.len, a.prot, a.flags, pgoff);
151 up_write(¤t->mm->mmap_sem);
159 struct sel_arg_struct {
161 fd_set *inp, *outp, *exp;
165 asmlinkage int old_select(struct sel_arg_struct *arg)
167 struct sel_arg_struct a;
169 if (copy_from_user(&a, arg, sizeof(a)))
171 /* sys_select() does the appropriate kernel locking */
172 return sys_select(a.n, a.inp, a.outp, a.exp, a.tvp);
176 * sys_ipc() is the de-multiplexer for the SysV IPC calls..
178 * This is really horribly ugly.
180 asmlinkage int sys_ipc (uint call, int first, int second,
181 int third, void *ptr, long fifth)
185 version = call >> 16; /* hack for backward compatibility */
191 return sys_semop (first, (struct sembuf *)ptr, second);
193 return sys_semget (first, second, third);
198 if (get_user(fourth.__pad, (void **) ptr))
200 return sys_semctl (first, second, third, fourth);
208 return sys_msgsnd (first, (struct msgbuf *) ptr,
213 struct ipc_kludge tmp;
216 if (copy_from_user (&tmp,
217 (struct ipc_kludge *)ptr,
220 return sys_msgrcv (first, tmp.msgp, second,
224 return sys_msgrcv (first,
225 (struct msgbuf *) ptr,
226 second, fifth, third);
229 return sys_msgget ((key_t) first, second);
231 return sys_msgctl (first, second,
232 (struct msqid_ds *) ptr);
242 ret = do_shmat (first, (char *) ptr,
246 return put_user (raddr, (ulong *) third);
250 return sys_shmdt ((char *)ptr);
252 return sys_shmget (first, second, third);
254 return sys_shmctl (first, second,
255 (struct shmid_ds *) ptr);
263 /* sys_cacheflush -- no support. */
265 sys_cacheflush (unsigned long addr, int scope, int cache, unsigned long len)
270 asmlinkage int sys_getpagesize(void)
275 #if defined(CONFIG_SYSCALL_PRINT)
276 asmlinkage void syscall_print(void *dummy,...)
278 struct pt_regs *regs = (struct pt_regs *) ((unsigned char *)&dummy-4);
279 printk("call %06lx:%ld 1:%08lx,2:%08lx,3:%08lx,ret:%08lx\n",
280 ((regs->pc)&0xffffff)-2,regs->orig_er0,regs->er1,regs->er2,regs->er3,regs->er0);
285 * Do a system call from kernel instead of calling sys_execve so we
286 * end up with proper pt_regs.
288 int kernel_execve(const char *filename, char *const argv[], char *const envp[])
290 register long res __asm__("er0");
291 register const char * _a __asm__("er1") = filename;
292 register void *_b __asm__("er2") = argv;
293 register void *_c __asm__("er3") = envp;
294 __asm__ __volatile__ ("mov.l %1,er0\n\t"