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>
23 #include <asm/setup.h>
24 #include <asm/uaccess.h>
25 #include <asm/cachectl.h>
26 #include <asm/traps.h>
28 #include <asm/unistd.h>
31 * sys_pipe() is the normal C calling standard for creating
32 * a pipe. It's not the way unix traditionally does this, though.
34 asmlinkage int sys_pipe(unsigned long * fildes)
41 if (copy_to_user(fildes, fd, 2*sizeof(int)))
47 /* common code for old and new mmaps */
48 static inline long do_mmap2(
49 unsigned long addr, unsigned long len,
50 unsigned long prot, unsigned long flags,
51 unsigned long fd, unsigned long pgoff)
54 struct file * file = NULL;
56 flags &= ~(MAP_EXECUTABLE | MAP_DENYWRITE);
57 if (!(flags & MAP_ANONYMOUS)) {
63 down_write(¤t->mm->mmap_sem);
64 error = do_mmap_pgoff(file, addr, len, prot, flags, pgoff);
65 up_write(¤t->mm->mmap_sem);
73 asmlinkage long sys_mmap2(unsigned long addr, unsigned long len,
74 unsigned long prot, unsigned long flags,
75 unsigned long fd, unsigned long pgoff)
77 return do_mmap2(addr, len, prot, flags, fd, pgoff);
81 * Perform the select(nd, in, out, ex, tv) and mmap() system
82 * calls. Linux/m68k cloned Linux/i386, which didn't use to be able to
83 * handle more than 4 system call parameters, so these system calls
84 * used a memory block for parameter passing..
87 struct mmap_arg_struct {
96 asmlinkage int old_mmap(struct mmap_arg_struct *arg)
98 struct mmap_arg_struct a;
101 if (copy_from_user(&a, arg, sizeof(a)))
105 if (a.offset & ~PAGE_MASK)
108 a.flags &= ~(MAP_EXECUTABLE | MAP_DENYWRITE);
110 error = do_mmap2(a.addr, a.len, a.prot, a.flags, a.fd, a.offset >> PAGE_SHIFT);
115 #if 0 /* DAVIDM - do we want this */
116 struct mmap_arg_struct64 {
121 __u64 offset; /* 64 bits */
125 asmlinkage long sys_mmap64(struct mmap_arg_struct64 *arg)
128 struct file * file = NULL;
129 struct mmap_arg_struct64 a;
132 if (copy_from_user(&a, arg, sizeof(a)))
135 if ((long)a.offset & ~PAGE_MASK)
138 pgoff = a.offset >> PAGE_SHIFT;
139 if ((a.offset >> PAGE_SHIFT) != pgoff)
142 if (!(a.flags & MAP_ANONYMOUS)) {
148 a.flags &= ~(MAP_EXECUTABLE | MAP_DENYWRITE);
150 down_write(¤t->mm->mmap_sem);
151 error = do_mmap_pgoff(file, a.addr, a.len, a.prot, a.flags, pgoff);
152 up_write(¤t->mm->mmap_sem);
160 struct sel_arg_struct {
162 fd_set *inp, *outp, *exp;
166 asmlinkage int old_select(struct sel_arg_struct *arg)
168 struct sel_arg_struct a;
170 if (copy_from_user(&a, arg, sizeof(a)))
172 /* sys_select() does the appropriate kernel locking */
173 return sys_select(a.n, a.inp, a.outp, a.exp, a.tvp);
177 * sys_ipc() is the de-multiplexer for the SysV IPC calls..
179 * This is really horribly ugly.
181 asmlinkage int sys_ipc (uint call, int first, int second,
182 int third, void *ptr, long fifth)
186 version = call >> 16; /* hack for backward compatibility */
192 return sys_semop (first, (struct sembuf *)ptr, second);
194 return sys_semget (first, second, third);
199 if (get_user(fourth.__pad, (void **) ptr))
201 return sys_semctl (first, second, third, fourth);
209 return sys_msgsnd (first, (struct msgbuf *) ptr,
214 struct ipc_kludge tmp;
217 if (copy_from_user (&tmp,
218 (struct ipc_kludge *)ptr,
221 return sys_msgrcv (first, tmp.msgp, second,
225 return sys_msgrcv (first,
226 (struct msgbuf *) ptr,
227 second, fifth, third);
230 return sys_msgget ((key_t) first, second);
232 return sys_msgctl (first, second,
233 (struct msqid_ds *) ptr);
243 ret = do_shmat (first, (char *) ptr,
247 return put_user (raddr, (ulong *) third);
251 return sys_shmdt ((char *)ptr);
253 return sys_shmget (first, second, third);
255 return sys_shmctl (first, second,
256 (struct shmid_ds *) ptr);
264 /* sys_cacheflush -- no support. */
266 sys_cacheflush (unsigned long addr, int scope, int cache, unsigned long len)
271 asmlinkage int sys_getpagesize(void)
276 #if defined(CONFIG_SYSCALL_PRINT)
277 asmlinkage void syscall_print(void *dummy,...)
279 struct pt_regs *regs = (struct pt_regs *) ((unsigned char *)&dummy-4);
280 printk("call %06lx:%ld 1:%08lx,2:%08lx,3:%08lx,ret:%08lx\n",
281 ((regs->pc)&0xffffff)-2,regs->orig_er0,regs->er1,regs->er2,regs->er3,regs->er0);
286 * Do a system call from kernel instead of calling sys_execve so we
287 * end up with proper pt_regs.
289 int kernel_execve(const char *filename, char *const argv[], char *const envp[])
291 register long res __asm__("er0");
292 register char *const *_c __asm__("er3") = envp;
293 register char *const *_b __asm__("er2") = argv;
294 register const char * _a __asm__("er1") = filename;
295 __asm__ __volatile__ ("mov.l %1,er0\n\t"