From 871480933a1c28f8a9fed4c4d34d06c439a7a422 Mon Sep 17 00:00:00 2001
From: Srikant Patnaik
Date: Sun, 11 Jan 2015 12:28:04 +0530
Subject: Moved, renamed, and deleted files

The original directory structure was scattered and unorganized.
Changes are basically to make it look like kernel structure.
---
 arch/microblaze/kernel/sys_microblaze.c | 98 +++++++++++++++++++++++++++++++++
 1 file changed, 98 insertions(+)
 create mode 100644 arch/microblaze/kernel/sys_microblaze.c

(limited to 'arch/microblaze/kernel/sys_microblaze.c')

diff --git a/arch/microblaze/kernel/sys_microblaze.c b/arch/microblaze/kernel/sys_microblaze.c
new file mode 100644
index 00000000..e5b154f2
--- /dev/null
+++ b/arch/microblaze/kernel/sys_microblaze.c
@@ -0,0 +1,98 @@
+/*
+ * Copyright (C) 2007-2009 Michal Simek <monstr@monstr.eu>
+ * Copyright (C) 2007-2009 PetaLogix
+ * Copyright (C) 2007 John Williams <john.williams@petalogix.com>
+ *
+ * Copyright (C) 2006 Atmark Techno, Inc.
+ *	Yasushi SHOJI <yashi@atmark-techno.com>
+ *	Tetsuya OHKAWA <tetsuya@atmark-techno.com>
+ *
+ * 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/mm.h>
+#include <linux/smp.h>
+#include <linux/syscalls.h>
+#include <linux/sem.h>
+#include <linux/msg.h>
+#include <linux/shm.h>
+#include <linux/stat.h>
+#include <linux/mman.h>
+#include <linux/sys.h>
+#include <linux/ipc.h>
+#include <linux/file.h>
+#include <linux/module.h>
+#include <linux/err.h>
+#include <linux/fs.h>
+#include <linux/semaphore.h>
+#include <linux/uaccess.h>
+#include <linux/unistd.h>
+#include <linux/slab.h>
+
+#include <asm/syscalls.h>
+
+asmlinkage long microblaze_vfork(struct pt_regs *regs)
+{
+	return do_fork(CLONE_VFORK | CLONE_VM | SIGCHLD, regs->r1,
+						regs, 0, NULL, NULL);
+}
+
+asmlinkage long microblaze_clone(int flags, unsigned long stack,
+							struct pt_regs *regs)
+{
+	if (!stack)
+		stack = regs->r1;
+	return do_fork(flags, stack, regs, 0, NULL, NULL);
+}
+
+asmlinkage long microblaze_execve(const char __user *filenamei,
+				  const char __user *const __user *argv,
+				  const char __user *const __user *envp,
+				  struct pt_regs *regs)
+{
+	int error;
+	char *filename;
+
+	filename = getname(filenamei);
+	error = PTR_ERR(filename);
+	if (IS_ERR(filename))
+		goto out;
+	error = do_execve(filename, argv, envp, regs);
+	putname(filename);
+out:
+	return error;
+}
+
+asmlinkage long sys_mmap(unsigned long addr, unsigned long len,
+			unsigned long prot, unsigned long flags,
+			unsigned long fd, off_t pgoff)
+{
+	if (pgoff & ~PAGE_MASK)
+		return -EINVAL;
+
+	return sys_mmap_pgoff(addr, len, prot, flags, fd, pgoff >> PAGE_SHIFT);
+}
+
+/*
+ * Do a system call from kernel instead of calling sys_execve so we
+ * end up with proper pt_regs.
+ */
+int kernel_execve(const char *filename,
+		  const char *const argv[],
+		  const char *const envp[])
+{
+	register const char *__a __asm__("r5") = filename;
+	register const void *__b __asm__("r6") = argv;
+	register const void *__c __asm__("r7") = envp;
+	register unsigned long __syscall __asm__("r12") = __NR_execve;
+	register unsigned long __ret __asm__("r3");
+	__asm__ __volatile__ ("brki r14, 0x8"
+			: "=r" (__ret), "=r" (__syscall)
+			: "1" (__syscall), "r" (__a), "r" (__b), "r" (__c)
+			: "r4", "r8", "r9",
+			"r10", "r11", "r14", "cc", "memory");
+	return __ret;
+}
-- 
cgit