From: Greentime Hu <greent...@andestech.com>

This patch adds definitions for the ELF format, relocation types, vdso
locations and EXEC_PAGESIZE.

Signed-off-by: Vincent Chen <vince...@andestech.com>
Signed-off-by: Greentime Hu <greent...@andestech.com>
---
 arch/nds32/include/asm/elf.h         |  192 ++++++++++++++++++++++++++++++++++
 arch/nds32/include/uapi/asm/auxvec.h |   25 +++++
 arch/nds32/include/uapi/asm/param.h  |   24 +++++
 3 files changed, 241 insertions(+)
 create mode 100644 arch/nds32/include/asm/elf.h
 create mode 100644 arch/nds32/include/uapi/asm/auxvec.h
 create mode 100644 arch/nds32/include/uapi/asm/param.h

diff --git a/arch/nds32/include/asm/elf.h b/arch/nds32/include/asm/elf.h
new file mode 100644
index 0000000..a6e4c56
--- /dev/null
+++ b/arch/nds32/include/asm/elf.h
@@ -0,0 +1,192 @@
+/*
+ * Copyright (C) 2005-2017 Andes Technology Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * 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 <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef __ASMNDS32_ELF_H
+#define __ASMNDS32_ELF_H
+
+/*
+ * ELF register definitions..
+ */
+
+#include <asm/ptrace.h>
+
+typedef unsigned long elf_greg_t;
+typedef unsigned long elf_freg_t[3];
+
+extern unsigned int elf_hwcap;
+
+#define EM_NDS32                       167
+
+#define R_NDS32_NONE                   0
+#define R_NDS32_16_RELA                        19
+#define R_NDS32_32_RELA                        20
+#define R_NDS32_9_PCREL_RELA           22
+#define R_NDS32_15_PCREL_RELA          23
+#define R_NDS32_17_PCREL_RELA          24
+#define R_NDS32_25_PCREL_RELA          25
+#define R_NDS32_HI20_RELA              26
+#define R_NDS32_LO12S3_RELA            27
+#define R_NDS32_LO12S2_RELA            28
+#define R_NDS32_LO12S1_RELA            29
+#define R_NDS32_LO12S0_RELA            30
+#define R_NDS32_SDA15S3_RELA           31
+#define R_NDS32_SDA15S2_RELA           32
+#define R_NDS32_SDA15S1_RELA           33
+#define R_NDS32_SDA15S0_RELA           34
+#define R_NDS32_GOT20                  37
+#define R_NDS32_25_PLTREL              38
+#define R_NDS32_COPY                   39
+#define R_NDS32_GLOB_DAT               40
+#define R_NDS32_JMP_SLOT               41
+#define R_NDS32_RELATIVE               42
+#define R_NDS32_GOTOFF                 43
+#define R_NDS32_GOTPC20                        44
+#define R_NDS32_GOT_HI20               45
+#define R_NDS32_GOT_LO12               46
+#define R_NDS32_GOTPC_HI20             47
+#define R_NDS32_GOTPC_LO12             48
+#define R_NDS32_GOTOFF_HI20            49
+#define R_NDS32_GOTOFF_LO12            50
+#define R_NDS32_INSN16                 51
+#define R_NDS32_LABEL                  52
+#define R_NDS32_LONGCALL1              53
+#define R_NDS32_LONGCALL2              54
+#define R_NDS32_LONGCALL3              55
+#define R_NDS32_LONGJUMP1              56
+#define R_NDS32_LONGJUMP2              57
+#define R_NDS32_LONGJUMP3              58
+#define R_NDS32_LOADSTORE              59
+#define R_NDS32_9_FIXED_RELA           60
+#define R_NDS32_15_FIXED_RELA          61
+#define R_NDS32_17_FIXED_RELA          62
+#define R_NDS32_25_FIXED_RELA          63
+#define R_NDS32_PLTREL_HI20            64
+#define R_NDS32_PLTREL_LO12            65
+#define R_NDS32_PLT_GOTREL_HI20                66
+#define R_NDS32_PLT_GOTREL_LO12                67
+#define R_NDS32_LO12S0_ORI_RELA                72
+#define R_NDS32_DWARF2_OP1_RELA        77
+#define R_NDS32_DWARF2_OP2_RELA        78
+#define R_NDS32_DWARF2_LEB_RELA        79
+#define R_NDS32_WORD_9_PCREL_RELA      94
+#define R_NDS32_LONGCALL4              107
+#define R_NDS32_RELA_NOP_MIX           192
+#define R_NDS32_RELA_NOP_MAX           255
+
+#define ELF_NGREG (sizeof (struct pt_regs) / sizeof(elf_greg_t))
+typedef elf_greg_t elf_gregset_t[ELF_NGREG];
+
+/* 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).  There are quite a number of
+   obstacles to being able to view the contents of the floating point
+   registers, and until these are solved you will not be able to view the
+   contents of them.  Actually, you can read in the core file and look at
+   the contents of the user struct to find out what the floating point
+   registers contain.
+   The actual 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 useful at some point.
+   All of the registers are stored as part of the upage.  The upage should
+   always be only one page.
+   DATA: The data area is stored.  We use current->end_text to
+   current->brk to pick up all of the user variables, plus any memory
+   that may have been malloced.  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 (esp) to
+   current->start_stack, so we round each of these off in order to be able
+   to write an integer number of pages.
+   The minimum core file size is 3 pages, or 12288 bytes.
+*/
+
+struct user_fp {
+       struct fp_reg {
+               unsigned int sign1:1;
+               unsigned int unused:15;
+               unsigned int sign2:1;
+               unsigned int exponent:14;
+               unsigned int j:1;
+               unsigned int mantissa1:31;
+               unsigned int mantissa0:32;
+       } fpregs[8];
+       unsigned int fpsr:32;
+       unsigned int fpcr:32;
+       unsigned char ftype[8];
+       unsigned int init_flag;
+};
+
+typedef struct user_fp elf_fpregset_t;
+
+struct elf32_hdr;
+#define elf_check_arch(x)              ((x)->e_machine == EM_NDS32)
+
+/*
+ * These are used to set parameters in the core dumps.
+ */
+#define ELF_CLASS      ELFCLASS32
+#ifdef __NDS32_EB__
+#define ELF_DATA       ELFDATA2MSB;
+#else
+#define ELF_DATA       ELFDATA2LSB;
+#endif
+#define ELF_ARCH       EM_NDS32
+#define USE_ELF_CORE_DUMP
+#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        (2 * TASK_SIZE / 3)
+
+/* When the program starts, a1 contains a pointer to a function to be
+   registered with atexit, as per the SVR4 ABI.  A value of 0 means we
+   have no such handler.  */
+#define ELF_PLAT_INIT(_r, load_addr)   (_r)->uregs[0] = 0
+
+/* This yields a mask that user programs can use to figure out what
+   instruction set this cpu supports. */
+
+#define ELF_HWCAP      (elf_hwcap)
+
+#ifdef __KERNEL__
+
+#define ELF_PLATFORM    (NULL)
+
+/* Old NetWinder binaries were compiled in such a way that the iBCS
+   heuristic always trips on them.  Until these binaries become uncommon
+   enough not to care, don't trust the `ibcs' flag here.  In any case
+   there is no other ELF system currently supported by iBCS.
+   @@ Could print a warning message to encourage users to upgrade.  */
+#define SET_PERSONALITY(ex)    set_personality(PER_LINUX)
+
+#endif
+
+#define ARCH_DLINFO                                            \
+do {                                                           \
+       NEW_AUX_ENT(AT_SYSINFO_EHDR,                            \
+                   (elf_addr_t)current->mm->context.vdso);     \
+} while (0)
+#define ARCH_HAS_SETUP_ADDITIONAL_PAGES 1
+struct linux_binprm;
+int arch_setup_additional_pages(struct linux_binprm *, int);
+
+#endif
diff --git a/arch/nds32/include/uapi/asm/auxvec.h 
b/arch/nds32/include/uapi/asm/auxvec.h
new file mode 100644
index 0000000..02e9757
--- /dev/null
+++ b/arch/nds32/include/uapi/asm/auxvec.h
@@ -0,0 +1,25 @@
+/*
+ * Copyright (C) 2005-2017 Andes Technology Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * 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 <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef __ASM_AUXVEC_H
+#define __ASM_AUXVEC_H
+
+/* VDSO location */
+#define AT_SYSINFO_EHDR        33
+
+#define AT_VECTOR_SIZE_ARCH 1
+
+#endif
diff --git a/arch/nds32/include/uapi/asm/param.h 
b/arch/nds32/include/uapi/asm/param.h
new file mode 100644
index 0000000..2e4527f3
--- /dev/null
+++ b/arch/nds32/include/uapi/asm/param.h
@@ -0,0 +1,24 @@
+/*
+ * Copyright (C) 2005-2017 Andes Technology Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * 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 <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef __ASM_NDS32_PARAM_H
+#define __ASM_NDS32_PARAM_H
+
+#define EXEC_PAGESIZE  8192
+
+#include <asm-generic/param.h>
+
+#endif /* __ASM_NDS32_PARAM_H */
-- 
1.7.9.5

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