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, 183 insertions, 0 deletions

diff --git a/kernel/arch/tile/include/asm/elf.h b/kernel/arch/tile/include/asm/elf.h
new file mode 100644
index 000000000..41d9878a9
--- /dev/null
+++ b/kernel/arch/tile/include/asm/elf.h
@@ -0,0 +1,183 @@
+/*
+ * Copyright 2010 Tilera Corporation. All Rights Reserved.
+ *
+ *   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, version 2.
+ *
+ *   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, GOOD TITLE or
+ *   NON INFRINGEMENT.  See the GNU General Public License for
+ *   more details.
+ */
+
+#ifndef _ASM_TILE_ELF_H
+#define _ASM_TILE_ELF_H
+
+/*
+ * ELF register definitions.
+ */
+
+#include <arch/chip.h>
+
+#include <linux/ptrace.h>
+#include <asm/byteorder.h>
+#include <asm/page.h>
+
+typedef unsigned long elf_greg_t;
+
+#define ELF_NGREG (sizeof(struct pt_regs) / sizeof(elf_greg_t))
+typedef elf_greg_t elf_gregset_t[ELF_NGREG];
+
+#define EM_TILEPRO 188
+#define EM_TILEGX  191
+
+/* Provide a nominal data structure. */
+#define ELF_NFPREG	0
+typedef double elf_fpreg_t;
+typedef elf_fpreg_t elf_fpregset_t[ELF_NFPREG];
+
+#ifdef __tilegx__
+#define ELF_CLASS	ELFCLASS64
+#else
+#define ELF_CLASS	ELFCLASS32
+#endif
+#ifdef __BIG_ENDIAN__
+#define ELF_DATA	ELFDATA2MSB
+#else
+#define ELF_DATA	ELFDATA2LSB
+#endif
+
+/*
+ * There seems to be a bug in how compat_binfmt_elf.c works: it
+ * #undefs ELF_ARCH, but it is then used in binfmt_elf.c for fill_note_info().
+ * Hack around this by providing an enum value of ELF_ARCH.
+ */
+enum { ELF_ARCH = CHIP_ELF_TYPE() };
+#define ELF_ARCH ELF_ARCH
+
+/*
+ * This is used to ensure we don't load something for the wrong architecture.
+ */
+#define elf_check_arch(x)  \
+	((x)->e_ident[EI_CLASS] == ELF_CLASS && \
+	 (x)->e_ident[EI_DATA] == ELF_DATA && \
+	 (x)->e_machine == CHIP_ELF_TYPE())
+
+/* The module loader only handles a few relocation types. */
+#ifndef __tilegx__
+#define R_TILE_32                 1
+#define R_TILE_JOFFLONG_X1       15
+#define R_TILE_IMM16_X0_LO       25
+#define R_TILE_IMM16_X1_LO       26
+#define R_TILE_IMM16_X0_HA       29
+#define R_TILE_IMM16_X1_HA       30
+#else
+#define R_TILEGX_64                       1
+#define R_TILEGX_JUMPOFF_X1              21
+#define R_TILEGX_IMM16_X0_HW0            36
+#define R_TILEGX_IMM16_X1_HW0            37
+#define R_TILEGX_IMM16_X0_HW1            38
+#define R_TILEGX_IMM16_X1_HW1            39
+#define R_TILEGX_IMM16_X0_HW2_LAST       48
+#define R_TILEGX_IMM16_X1_HW2_LAST       49
+#endif
+
+/* Use standard page size for core dumps. */
+#define ELF_EXEC_PAGESIZE	PAGE_SIZE
+
+/*
+ * This is the location that an ET_DYN program is loaded if exec'ed.  Typical
+ * use of this is to invoke "./ld.so someprog" to test out a new version of
+ * the loader.  We need to make sure that it is out of the way of the program
+ * that it will "exec", and that there is sufficient room for the brk.
+ */
+#define ELF_ET_DYN_BASE         (TASK_SIZE / 3 * 2)
+
+#define ELF_CORE_COPY_REGS(_dest, _regs)			\
+	memcpy((char *) &_dest, (char *) _regs,			\
+	       sizeof(struct pt_regs));
+
+/* No additional FP registers to copy. */
+#define ELF_CORE_COPY_FPREGS(t, fpu) 0
+
+/*
+ * This yields a mask that user programs can use to figure out what
+ * instruction set this CPU supports.  This could be done in user space,
+ * but it's not easy, and we've already done it here.
+ */
+#define ELF_HWCAP	(0)
+
+/*
+ * This yields a string that ld.so will use to load implementation
+ * specific libraries for optimization.  This is more specific in
+ * intent than poking at uname or /proc/cpuinfo.
+ */
+#define ELF_PLATFORM  (NULL)
+
+extern void elf_plat_init(struct pt_regs *regs, unsigned long load_addr);
+
+#define ELF_PLAT_INIT(_r, load_addr) elf_plat_init(_r, load_addr)
+
+extern int dump_task_regs(struct task_struct *, elf_gregset_t *);
+#define ELF_CORE_COPY_TASK_REGS(tsk, elf_regs) dump_task_regs(tsk, elf_regs)
+
+/* Tilera Linux has no personalities currently, so no need to do anything. */
+#define SET_PERSONALITY(ex) do { } while (0)
+
+#define ARCH_HAS_SETUP_ADDITIONAL_PAGES
+/* Support auto-mapping of the user interrupt vectors. */
+struct linux_binprm;
+extern int arch_setup_additional_pages(struct linux_binprm *bprm,
+				       int executable_stack);
+#define ARCH_DLINFO \
+do { \
+	NEW_AUX_ENT(AT_SYSINFO_EHDR, VDSO_BASE); \
+} while (0)
+
+struct mm_struct;
+extern unsigned long arch_randomize_brk(struct mm_struct *mm);
+#define arch_randomize_brk arch_randomize_brk
+
+#ifdef CONFIG_COMPAT
+
+#define COMPAT_ELF_PLATFORM "tilegx-m32"
+
+/*
+ * "Compat" binaries have the same machine type, but 32-bit class,
+ * since they're not a separate machine type, but just a 32-bit
+ * variant of the standard 64-bit architecture.
+ */
+#define compat_elf_check_arch(x)  \
+	((x)->e_ident[EI_CLASS] == ELFCLASS32 && \
+	 (x)->e_machine == CHIP_ELF_TYPE())
+
+#define compat_start_thread(regs, ip, usp) do { \
+		regs->pc = ptr_to_compat_reg((void *)(ip)); \
+		regs->sp = ptr_to_compat_reg((void *)(usp)); \
+		single_step_execve();	\
+	} while (0)
+
+/*
+ * Use SET_PERSONALITY to indicate compatibility via TS_COMPAT.
+ */
+#undef SET_PERSONALITY
+#define SET_PERSONALITY(ex) \
+do { \
+	set_personality(PER_LINUX | (current->personality & (~PER_MASK))); \
+	current_thread_info()->status &= ~TS_COMPAT; \
+} while (0)
+#define COMPAT_SET_PERSONALITY(ex) \
+do { \
+	set_personality(PER_LINUX | (current->personality & (~PER_MASK))); \
+	current_thread_info()->status |= TS_COMPAT; \
+} while (0)
+
+#define COMPAT_ELF_ET_DYN_BASE (0xffffffff / 3 * 2)
+
+#endif /* CONFIG_COMPAT */
+
+#define CORE_DUMP_USE_REGSET
+
+#endif /* _ASM_TILE_ELF_H */