1 files changed, 115 insertions, 0 deletions

diff --git a/arch/blackfin/kernel/sys_bfin.c b/arch/blackfin/kernel/sys_bfin.c
new file mode 100644
index 000000000000..f436e6743f5a
--- /dev/null
+++ b/arch/blackfin/kernel/sys_bfin.c
@@ -0,0 +1,115 @@
+/*
+ * File:         arch/blackfin/kernel/sys_bfin.c
+ * Based on:
+ * Author:
+ *
+ * Created:
+ * Description:  This file contains various random system calls that
+ *               have a non-standard calling sequence on the Linux/bfin
+ *               platform.
+ *
+ * Modified:
+ *               Copyright 2004-2006 Analog Devices Inc.
+ *
+ * Bugs:         Enter bugs at http://blackfin.uclinux.org/
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see the file COPYING, or write
+ * to the Free Software Foundation, Inc.,
+ * 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+#include <linux/smp_lock.h>
+#include <linux/spinlock.h>
+#include <linux/sem.h>
+#include <linux/msg.h>
+#include <linux/shm.h>
+#include <linux/syscalls.h>
+#include <linux/mman.h>
+#include <linux/file.h>
+
+#include <asm/cacheflush.h>
+#include <asm/uaccess.h>
+#include <asm/ipc.h>
+#include <asm/dma.h>
+#include <asm/unistd.h>
+
+/*
+ * sys_pipe() is the normal C calling standard for creating
+ * a pipe. It's not the way unix traditionally does this, though.
+ */
+asmlinkage int sys_pipe(unsigned long *fildes)
+{
+        int fd[2];
+        int error;
+
+        error = do_pipe(fd);
+        if (!error) {
+                if (copy_to_user(fildes, fd, 2 * sizeof(int)))
+                        error = -EFAULT;
+        }
+        return error;
+}
+
+/* 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 sys_getpagesize(void)
+{
+        return PAGE_SIZE;
+}
+
+asmlinkage void *sys_sram_alloc(size_t size, unsigned long flags)
+{
+        return sram_alloc_with_lsl(size, flags);
+}
+
+asmlinkage int sys_sram_free(const void *addr)
+{
+        return sram_free_with_lsl(addr);
+}
+
+asmlinkage void *sys_dma_memcpy(void *dest, const void *src, size_t len)
+{
+        return safe_dma_memcpy(dest, src, len);
+}