sh: sys_sh consolidation for arch_get_unmapped_area().

Signed-off-by: Paul Mundt <lethal@linux-sh.org>

1 files changed, 4 insertions, 242 deletions

diff --git a/arch/sh/kernel/sys_sh64.c b/arch/sh/kernel/sys_sh64.c
index de0a303ba26..578004d71e0 100644
--- a/arch/sh/kernel/sys_sh64.c
+++ b/arch/sh/kernel/sys_sh64.c
@@ -1,9 +1,5 @@
 /*
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file "COPYING" in the main directory of this archive
- * for more details.
- *
- * arch/sh64/kernel/sys_sh64.c
+ * arch/sh/kernel/sys_sh64.c
  *
  * Copyright (C) 2000, 2001  Paolo Alberelli
  *
@@ -11,10 +7,10 @@
  * have a non-standard calling sequence on the Linux/SH5
  * platform.
  *
- * Mostly taken from i386 version.
- *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
  */
-
 #include <linux/errno.h>
 #include <linux/rwsem.h>
 #include <linux/sched.h>
@@ -34,48 +30,10 @@
 #include <asm/ptrace.h>
 #include <asm/unistd.h>
 
-#define REG_3	3
-
 /*
  * sys_pipe() is the normal C calling standard for creating
  * a pipe. It's not the way Unix traditionally does this, though.
  */
-#ifdef NEW_PIPE_IMPLEMENTATION
-asmlinkage int sys_pipe(unsigned long * fildes,
-			unsigned long   dummy_r3,
-			unsigned long   dummy_r4,
-			unsigned long   dummy_r5,
-			unsigned long   dummy_r6,
-			unsigned long   dummy_r7,
-			struct pt_regs * regs)	   /* r8 = pt_regs  forced by entry.S */
-{
-	int fd[2];
-	int ret;
-
-	ret = do_pipe(fd);
-	if (ret == 0)
-		/*
-		 ***********************************************************************
-		 *   To avoid the copy_to_user we prefer to break the ABIs convention, *
-		 *   packing the valid pair of file IDs into a single register (r3);   *
-		 *   while r2 is the return code as defined by the sh5-ABIs.	       *
-		 *   BE CAREFUL: pipe stub, into glibc, must be aware of this solution *
-		 ***********************************************************************
-
-#ifdef __LITTLE_ENDIAN__
-		regs->regs[REG_3] = (((unsigned long long) fd[1]) << 32) | ((unsigned long long) fd[0]);
-#else
-		regs->regs[REG_3] = (((unsigned long long) fd[0]) << 32) | ((unsigned long long) fd[1]);
-#endif
-
-		*/
-	       /* although not very clever this is endianess independent */
-		regs->regs[REG_3] = (unsigned long long) *((unsigned long long *) fd);
-
-	return ret;
-}
-
-#else
 asmlinkage int sys_pipe(unsigned long * fildes)
 {
         int fd[2];
@@ -89,202 +47,6 @@ asmlinkage int sys_pipe(unsigned long * fildes)
         return error;
 }
 
-#endif
-
-/*
- * To avoid cache alias, we map the shard page with same color.
- */
-#define COLOUR_ALIGN(addr)	(((addr)+SHMLBA-1)&~(SHMLBA-1))
-
-unsigned long arch_get_unmapped_area(struct file *filp, unsigned long addr,
-	unsigned long len, unsigned long pgoff, unsigned long flags)
-{
-	struct vm_area_struct *vma;
-
-	if (flags & MAP_FIXED) {
-		/* We do not accept a shared mapping if it would violate
-		 * cache aliasing constraints.
-		 */
-		if ((flags & MAP_SHARED) && (addr & (SHMLBA - 1)))
-			return -EINVAL;
-		return addr;
-	}
-
-	if (len > TASK_SIZE)
-		return -ENOMEM;
-	if (!addr)
-		addr = TASK_UNMAPPED_BASE;
-
-	if (flags & MAP_PRIVATE)
-		addr = PAGE_ALIGN(addr);
-	else
-		addr = COLOUR_ALIGN(addr);
-
-	for (vma = find_vma(current->mm, addr); ; vma = vma->vm_next) {
-		/* At this point:  (!vma || addr < vma->vm_end). */
-		if (TASK_SIZE - len < addr)
-			return -ENOMEM;
-		if (!vma || addr + len <= vma->vm_start)
-			return addr;
-		addr = vma->vm_end;
-		if (!(flags & MAP_PRIVATE))
-			addr = COLOUR_ALIGN(addr);
-	}
-}
-
-/* common code for old and new mmaps */
-static inline long do_mmap2(
-	unsigned long addr, unsigned long len,
-	unsigned long prot, unsigned long flags,
-	unsigned long fd, unsigned long pgoff)
-{
-	int error = -EBADF;
-	struct file * file = NULL;
-
-	flags &= ~(MAP_EXECUTABLE | MAP_DENYWRITE);
-	if (!(flags & MAP_ANONYMOUS)) {
-		file = fget(fd);
-		if (!file)
-			goto out;
-	}
-
-	down_write(&current->mm->mmap_sem);
-	error = do_mmap_pgoff(file, addr, len, prot, flags, pgoff);
-	up_write(&current->mm->mmap_sem);
-
-	if (file)
-		fput(file);
-out:
-	return error;
-}
-
-asmlinkage long sys_mmap2(unsigned long addr, unsigned long len,
-	unsigned long prot, unsigned long flags,
-	unsigned long fd, unsigned long pgoff)
-{
-	return do_mmap2(addr, len, prot, flags, fd, pgoff);
-}
-
-asmlinkage int old_mmap(unsigned long addr, unsigned long len,
-	unsigned long prot, unsigned long flags,
-	int fd, unsigned long off)
-{
-	if (off & ~PAGE_MASK)
-		return -EINVAL;
-	return do_mmap2(addr, len, prot, flags, fd, off>>PAGE_SHIFT);
-}
-
-/*
- * sys_ipc() is the de-multiplexer for the SysV IPC calls..
- *
- * This is really horribly ugly.
- */
-asmlinkage int sys_ipc(uint call, int first, int second,
-		       int third, void __user *ptr, long fifth)
-{
-	int version, ret;
-
-	version = call >> 16; /* hack for backward compatibility */
-	call &= 0xffff;
-
-	if (call <= SEMCTL)
-		switch (call) {
-		case SEMOP:
-			return sys_semtimedop(first, (struct sembuf __user *)ptr,
-					      second, NULL);
-		case SEMTIMEDOP:
-			return sys_semtimedop(first, (struct sembuf __user *)ptr,
-					      second,
-					      (const struct timespec __user *)fifth);
-		case SEMGET:
-			return sys_semget (first, second, third);
-		case SEMCTL: {
-			union semun fourth;
-			if (!ptr)
-				return -EINVAL;
-			if (get_user(fourth.__pad, (void * __user *) ptr))
-				return -EFAULT;
-			return sys_semctl (first, second, third, fourth);
-			}
-		default:
-			return -EINVAL;
-		}
-
-	if (call <= MSGCTL)
-		switch (call) {
-		case MSGSND:
-			return sys_msgsnd (first, (struct msgbuf __user *) ptr,
-					  second, third);
-		case MSGRCV:
-			switch (version) {
-			case 0: {
-				struct ipc_kludge tmp;
-				if (!ptr)
-					return -EINVAL;
-
-				if (copy_from_user(&tmp,
-						   (struct ipc_kludge __user *) ptr,
-						   sizeof (tmp)))
-					return -EFAULT;
-				return sys_msgrcv (first, tmp.msgp, second,
-						   tmp.msgtyp, third);
-				}
-			default:
-				return sys_msgrcv (first,
-						   (struct msgbuf __user *) ptr,
-						   second, fifth, third);
-			}
-		case MSGGET:
-			return sys_msgget ((key_t) first, second);
-		case MSGCTL:
-			return sys_msgctl (first, second,
-					   (struct msqid_ds __user *) ptr);
-		default:
-			return -EINVAL;
-		}
-	if (call <= SHMCTL)
-		switch (call) {
-		case SHMAT:
-			switch (version) {
-			default: {
-				ulong raddr;
-				ret = do_shmat (first, (char __user *) ptr,
-						 second, &raddr);
-				if (ret)
-					return ret;
-				return put_user (raddr, (ulong __user *) third);
-			}
-			case 1:	/* iBCS2 emulator entry point */
-				if (!segment_eq(get_fs(), get_ds()))
-					return -EINVAL;
-				return do_shmat (first, (char __user *) ptr,
-						  second, (ulong *) third);
-			}
-		case SHMDT:
-			return sys_shmdt ((char __user *)ptr);
-		case SHMGET:
-			return sys_shmget (first, second, third);
-		case SHMCTL:
-			return sys_shmctl (first, second,
-					   (struct shmid_ds __user *) ptr);
-		default:
-			return -EINVAL;
-		}
-
-	return -EINVAL;
-}
-
-asmlinkage int sys_uname(struct old_utsname * name)
-{
-	int err;
-	if (!name)
-		return -EFAULT;
-	down_read(&uts_sem);
-	err = copy_to_user(name, utsname(), sizeof (*name));
-	up_read(&uts_sem);
-	return err?-EFAULT:0;
-}
-
 /*
  * Do a system call from kernel instead of calling sys_execve so we
  * end up with proper pt_regs.