Add the rt linux 4.1.3-rt3 as base

Import the rt linux 4.1.3-rt3 as OPNFV kvm base.

It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and
the base is:

commit 0917f823c59692d751951bf5ea699a2d1e2f26a2
Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date:   Sat Jul 25 12:13:34 2015 +0200

    Prepare v4.1.3-rt3

    Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>

We lose all the git history this way and it's not good. We
should apply another opnfv project repo in future.

Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423
Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>

1 files changed, 67 insertions, 0 deletions

diff --git a/kernel/arch/sh/include/asm/user.h b/kernel/arch/sh/include/asm/user.h
new file mode 100644
index 000000000..8fd3cf6c5
--- /dev/null
+++ b/kernel/arch/sh/include/asm/user.h
@@ -0,0 +1,67 @@
+#ifndef __ASM_SH_USER_H
+#define __ASM_SH_USER_H
+
+#include <asm/ptrace.h>
+#include <asm/page.h>
+
+/*
+ * Core file format: The core file is written in such a way that gdb
+ * can understand it and provide useful information to the user (under
+ * linux we use the `trad-core' bfd).  The file contents are as follows:
+ *
+ *  upage: 1 page consisting of a user struct that tells gdb
+ *	what is present in the file.  Directly after this is a
+ *	copy of the task_struct, which is currently not used by gdb,
+ *	but it may come in handy at some point.  All of the registers
+ *	are stored as part of the upage.  The upage should always be
+ *	only one page long.
+ *  data: The data segment follows next.  We use current->end_text to
+ *	current->brk to pick up all of the user variables, plus any memory
+ *	that may have been sbrk'ed.  No attempt is made to determine if a
+ *	page is demand-zero or if a page is totally unused, we just cover
+ *	the entire range.  All of the addresses are rounded in such a way
+ *	that an integral number of pages is written.
+ *  stack: We need the stack information in order to get a meaningful
+ *	backtrace.  We need to write the data from usp to
+ *	current->start_stack, so we round each of these in order to be able
+ *	to write an integer number of pages.
+ */
+
+#if defined(__SH5__) || defined(CONFIG_CPU_SH5)
+struct user_fpu_struct {
+	unsigned long fp_regs[32];
+	unsigned int fpscr;
+};
+#else
+struct user_fpu_struct {
+	unsigned long fp_regs[16];
+	unsigned long xfp_regs[16];
+	unsigned long fpscr;
+	unsigned long fpul;
+};
+#endif
+
+struct user {
+	struct pt_regs	regs;			/* entire machine state */
+	struct user_fpu_struct fpu;	/* Math Co-processor registers  */
+	int u_fpvalid;		/* True if math co-processor being used */
+	size_t		u_tsize;		/* text size (pages) */
+	size_t		u_dsize;		/* data size (pages) */
+	size_t		u_ssize;		/* stack size (pages) */
+	unsigned long	start_code;		/* text starting address */
+	unsigned long	start_data;		/* data starting address */
+	unsigned long	start_stack;		/* stack starting address */
+	long int	signal;			/* signal causing core dump */
+	unsigned long	u_ar0;			/* help gdb find registers */
+	struct user_fpu_struct* u_fpstate;	/* Math Co-processor pointer */
+	unsigned long	magic;			/* identifies a core file */
+	char		u_comm[32];		/* user command name */
+};
+
+#define NBPG			PAGE_SIZE
+#define UPAGES			1
+#define HOST_TEXT_START_ADDR	(u.start_code)
+#define HOST_DATA_START_ADDR	(u.start_data)
+#define HOST_STACK_END_ADDR	(u.start_stack + u.u_ssize * NBPG)
+
+#endif /* __ASM_SH_USER_H */