700-nios2-2.15.patch

這是一個實時嵌入式作業系統 實作了MCS51 ARM等MCU

 
--- binutils-2.15/bfd/elf32-nios2.c	1970-01-01 01:00:00.000000000 +0100
+++ binutils-2.15-nios2/bfd/elf32-nios2.c	2005-05-17 12:20:13.000000000 +0200
@@ -0,0 +1,2188 @@
+/* New Jersey-specific support for 32-bit ELF
+
+   Copyright (C) 2003
+   by Nigel Gray ([e-mail]).
+
+
+This file is part of BFD, the Binary File Descriptor library.
+
+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, write to the Free Software
+Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
+
+/* This file handles Altera New Jersey ELF targets  */
+
+#include "bfd.h"
+#include "sysdep.h"
+#include "libbfd.h"
+#include "bfdlink.h"
+#include "genlink.h"
+#include "elf-bfd.h"
+#include "elf/nios2.h"
+#include "opcode/nios2.h"
+
+/* use RELA relocations*/
+#ifndef USE_RELA
+#define USE_RELA
+#endif
+
+#ifdef USE_REL
+#undef USE_REL
+#endif
+
+/* Function prototypes */
+
+static reloc_howto_type *nios2_elf32_bfd_reloc_type_lookup
+  (bfd *, bfd_reloc_code_real_type);
+
+static bfd_boolean nios2_elf32_relax_section
+  (bfd *, asection *, struct bfd_link_info *, bfd_boolean *);
+
+static bfd_boolean nios2_elf32_relax_delete_bytes
+  (bfd *, asection *, bfd_vma, int);
+
+static reloc_howto_type *nios2_elf32_rtype_to_howto
+  (unsigned int r_type, bfd_boolean rela_p);
+
+static void nios2_elf32_info_to_howto
+  (bfd * abfd, arelent * cache_ptr, Elf_Internal_Rela * dst);
+
+static bfd_boolean nios2_elf32_relocate_section
+  (bfd * output_bfd, struct bfd_link_info * info, bfd * input_bfd,
+   asection * input_section, bfd_byte * contents,
+   Elf_Internal_Rela * relocs, Elf_Internal_Sym * local_syms,
+   asection ** local_sections);
+
+static reloc_howto_type *lookup_howto   (unsigned int rtype);
+
+static bfd_reloc_status_type nios2_elf_final_gp
+  (bfd *, asymbol *, bfd_boolean, char **, bfd_vma *,
+	 struct bfd_link_info *);
+
+static bfd_boolean nios2_elf_assign_gp
+  (bfd *, bfd_vma *, struct bfd_link_info *);
+
+static bfd_reloc_status_type nios2_elf32_ignore_reloc
+  (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
+
+static bfd_reloc_status_type nios2_elf32_hi16_relocate
+  (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
+
+static bfd_reloc_status_type nios2_elf32_lo16_relocate
+  (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
+
+static bfd_reloc_status_type nios2_elf32_hiadj16_relocate
+  (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
+
+static bfd_reloc_status_type nios2_elf32_pcrel16_relocate
+  (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
+
+static bfd_reloc_status_type nios2_elf32_call26_relocate
+  (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
+
+static bfd_reloc_status_type nios2_elf32_gprel_relocate
+  (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
+
+static bfd_reloc_status_type nios2_elf32_ujmp_relocate
+  (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
+
+static bfd_reloc_status_type nios2_elf32_cjmp_relocate
+  (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
+
+static bfd_reloc_status_type nios2_elf32_callr_relocate
+  (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
+
+static bfd_reloc_status_type nios2_elf32_do_hi16_relocate
+  (bfd *, reloc_howto_type *, asection *,
+	 bfd_byte *, bfd_vma, bfd_vma, bfd_vma);
+
+static bfd_reloc_status_type nios2_elf32_do_lo16_relocate
+  (bfd *, reloc_howto_type *, asection *,
+	 bfd_byte *, bfd_vma, bfd_vma, bfd_vma);
+
+static bfd_reloc_status_type nios2_elf32_do_hiadj16_relocate
+  (bfd *, reloc_howto_type *, asection *,
+	 bfd_byte *, bfd_vma, bfd_vma, bfd_vma);
+
+static bfd_reloc_status_type nios2_elf32_do_pcrel16_relocate
+  (bfd *, reloc_howto_type *, asection *,
+	 bfd_byte *, bfd_vma, bfd_vma, bfd_vma);
+
+static bfd_reloc_status_type nios2_elf32_do_call26_relocate
+  (bfd *, reloc_howto_type *, asection *,
+	 bfd_byte *, bfd_vma, bfd_vma, bfd_vma);
+
+static bfd_reloc_status_type nios2_elf32_do_gprel_relocate
+  (bfd *, reloc_howto_type *, asection *,
+	 bfd_byte *, bfd_vma, bfd_vma, bfd_vma);
+
+static bfd_reloc_status_type nios2_elf32_do_ujmp_relocate
+  (bfd *, reloc_howto_type *, asection *,
+	 bfd_byte *, bfd_vma, bfd_vma, bfd_vma);
+
+static bfd_reloc_status_type nios2_elf32_do_cjmp_relocate
+  (bfd *, reloc_howto_type *, asection *,
+	 bfd_byte *, bfd_vma, bfd_vma, bfd_vma);
+
+static bfd_reloc_status_type nios2_elf32_do_callr_relocate
+  (bfd *, reloc_howto_type *, asection *,
+	 bfd_byte *, bfd_vma, bfd_vma, bfd_vma);
+
+
+static void nios2_elf32_post_process_headers
+  (bfd *, struct bfd_link_info *);
+
+static bfd_boolean nios2_elf32_section_from_shdr
+  (bfd *, Elf_Internal_Shdr *, const char *name);
+
+static bfd_boolean nios2_elf32_section_flags
+  (flagword *, Elf_Internal_Shdr *);
+
+static bfd_boolean nios2_elf32_fake_sections
+  (bfd *, Elf_Internal_Shdr *, asection *);
+
+
+
+static bfd_boolean nios2_elf32_check_relocs
+  (bfd *, struct bfd_link_info *, asection *,
+	 const Elf_Internal_Rela *);
+
+static asection *nios2_elf32_gc_mark_hook   (asection * sec,
+						   struct bfd_link_info *
+						   info,
+						   Elf_Internal_Rela * rel,
+						   struct elf_link_hash_entry
+						   * h,
+						   Elf_Internal_Sym * sym);
+
+
+/* target vector */
+extern const bfd_target bfd_elf32_littlenios2_vec;
+
+/* The relocation table used for SHT_REL sections.  */
+
+static reloc_howto_type elf_nios2_howto_table_rel[] = {
+  /* No relocation.  */
+  HOWTO (R_NIOS2_NONE,		/* type */
+	 0,			/* rightshift */
+	 0,			/* size (0 = byte, 1 = short, 2 = long) */
+	 0,			/* bitsize */
+	 FALSE,			/* pc_relative */
+	 0,			/* bitpos */
+	 complain_overflow_dont,	/* complain_on_overflow */
+	 bfd_elf_generic_reloc,	/* special_function */
+	 "R_NIOS2_NONE",	/* name */
+	 FALSE,			/* partial_inplace */
+	 0,			/* src_mask */
+	 0,			/* dst_mask */
+	 FALSE),		/* pcrel_offset */
+
+  /* 16-bit signed immediate relocation */
+  HOWTO (R_NIOS2_S16,		/* type */
+	 0,			/* rightshift */
+	 2,			/* size (0 = byte, 1 = short, 2 = long) */
+	 16,			/* bitsize */
+	 FALSE,			/* pc_relative */
+	 6,			/* bitpos */
+	 complain_overflow_signed,	/* complain on overflow */
+	 bfd_elf_generic_reloc,	/* special function */
+	 "R_NIOS2_S16",		/* name */
+	 FALSE,			/* partial_inplace */
+	 0x003fffc0,		/* src_mask */
+	 0x003fffc0,		/* dest_mask */
+	 FALSE),		/* pcrel_offset */
+
+  /* 16-bit unsigned immediate relocation */
+  HOWTO (R_NIOS2_U16,		/* type */
+	 0,			/* rightshift */
+	 2,			/* size (0 = byte, 1 = short, 2 = long) */
+	 16,			/* bitsize */
+	 FALSE,			/* pc_relative */
+	 6,			/* bitpos */
+	 complain_overflow_unsigned,	/* complain on overflow */
+	 bfd_elf_generic_reloc,	/* special function */
+	 "R_NIOS2_U16",		/* name */
+	 FALSE,			/* partial_inplace */
+	 0x003fffc0,		/* src_mask */
+	 0x003fffc0,		/* dest_mask */
+	 FALSE),		/* pcrel_offset */
+
+  HOWTO (R_NIOS2_PCREL16,	/* type */
+	 0,			/* rightshift */
+	 2,			/* size (0 = byte, 1 = short, 2 = long) */
+	 16,			/* bitsize */
+	 TRUE,			/* pc_relative */
+	 6,			/* bitpos */
+	 complain_overflow_signed,	/* complain on overflow */
+	 nios2_elf32_pcrel16_relocate,	/* special function */
+	 "R_NIOS2_PCREL16",	/* name */
+	 FALSE,			/* partial_inplace */
+	 0x003fffc0,		/* src_mask */
+	 0x003fffc0,		/* dest_mask */
+	 TRUE),			/* pcrel_offset */
+
+  HOWTO (R_NIOS2_CALL26,	/* type */
+	 2,			/* rightshift */
+	 2,			/* size (0 = byte, 1 = short, 2 = long) */
+	 26,			/* bitsize */
+	 FALSE,			/* pc_relative */
+	 6,			/* bitpos */
+	 complain_overflow_dont,	/* complain on overflow */
+	 nios2_elf32_call26_relocate,	/* special function */
+	 "R_NIOS2_CALL26",	/* name */
+	 FALSE,			/* partial_inplace */
+	 0xffffffc0,		/* src_mask */
+	 0xffffffc0,		/* dst_mask */
+	 FALSE),		/* pcrel_offset */
+
+  HOWTO (R_NIOS2_IMM5,
+	 0,
+	 2,
+	 5,
+	 FALSE,
+	 6,
+	 complain_overflow_bitfield,
+	 bfd_elf_generic_reloc,
+	 "R_NIOS2_IMM5",
+	 FALSE,
+	 0x000007c0,
+	 0x000007c0,
+	 FALSE),
+
+  HOWTO (R_NIOS2_CACHE_OPX,
+	 0,
+	 2,
+	 5,
+	 FALSE,
+	 22,
+	 complain_overflow_bitfield,
+	 bfd_elf_generic_reloc,
+	 "R_NIOS2_CACHE_OPX",
+	 FALSE,
+	 0x07c00000,
+	 0x07c00000,
+	 FALSE),
+
+  HOWTO (R_NIOS2_IMM6,
+	 0,
+	 2,
+	 6,
+	 FALSE,
+	 6,
+	 complain_overflow_bitfield,
+	 bfd_elf_generic_reloc,
+	 "R_NIOS2_IMM6",
+	 FALSE,
+	 0x00000fc0,
+	 0x00000fc0,
+	 FALSE),
+
+  HOWTO (R_NIOS2_IMM8,
+	 0,
+	 2,
+	 8,
+	 FALSE,
+	 6,
+	 complain_overflow_bitfield,
+	 bfd_elf_generic_reloc,
+	 "R_NIOS2_IMM8",
+	 FALSE,
+	 0x00003fc0,
+	 0x00003fc0,
+	 FALSE),
+
+  HOWTO (R_NIOS2_HI16,
+	 0,
+	 2,
+	 32,
+	 FALSE,
+	 6,
+	 complain_overflow_dont,
+	 nios2_elf32_hi16_relocate,
+	 "R_NIOS2_HI16",
+	 FALSE,
+	 0x003fffc0,
+	 0x003fffc0,
+	 FALSE),
+
+  HOWTO (R_NIOS2_LO16,
+	 0,
+	 2,
+	 32,
+	 FALSE,
+	 6,
+	 complain_overflow_dont,
+	 nios2_elf32_lo16_relocate,
+	 "R_NIOS2_LO16",
+	 FALSE,
+	 0x003fffc0,
+	 0x003fffc0,
+	 FALSE),
+
+  HOWTO (R_NIOS2_HIADJ16,
+	 0,
+	 2,
+	 32,
+	 FALSE,
+	 6,
+	 complain_overflow_dont,
+	 nios2_elf32_hiadj16_relocate,
+	 "R_NIOS2_HIADJ16",
+	 FALSE,
+	 0x003fffc0,
+	 0x003fffc0,
+	 FALSE),
+
+  HOWTO (R_NIOS2_BFD_RELOC_32,
+	 0,
+	 2,			/* long */
+	 32,
+	 FALSE,
+	 0,
+	 complain_overflow_dont,
+	 bfd_elf_generic_reloc,
+	 "R_NIOS2_BFD_RELOC32",
+	 FALSE,
+	 0xffffffff,
+	 0xffffffff,
+	 FALSE),
+
+  HOWTO (R_NIOS2_BFD_RELOC_16,
+	 0,
+	 1,			/* short */
+	 16,
+	 FALSE,
+	 0,
+	 complain_overflow_bitfield,
+	 bfd_elf_generic_reloc,
+	 "R_NIOS2_BFD_RELOC16",
+	 FALSE,
+	 0x0000ffff,
+	 0x0000ffff,
+	 FALSE),
+
+  HOWTO (R_NIOS2_BFD_RELOC_8,
+	 0,
+	 0,			/* byte */
+	 8,
+	 FALSE,
+	 0,
+	 complain_overflow_bitfield,
+	 bfd_elf_generic_reloc,
+	 "R_NIOS2_BFD_RELOC8",
+	 FALSE,
+	 0x000000ff,
+	 0x000000ff,
+	 FALSE),
+
+  HOWTO (R_NIOS2_GPREL,
+	 0,
+	 2,
+	 32,
+	 FALSE,
+	 6,
+	 complain_overflow_dont,
+	 nios2_elf32_gprel_relocate,
+	 "R_NIOS2_GPREL",
+	 FALSE,
+	 0x003fffc0,
+	 0x003fffc0,
+	 FALSE),
+
+  HOWTO (R_NIOS2_GNU_VTINHERIT,
+	 0,
+	 2,			/* short */
+	 0,
+	 FALSE,
+	 0,
+	 complain_overflow_dont,
+	 NULL,
+	 "R_NIOS2_GNU_VTINHERIT",
+	 FALSE,
+	 0,
+	 0,
+	 FALSE),
+
+  HOWTO (R_NIOS2_GNU_VTENTRY,
+	 0,
+	 2,			/* byte */
+	 0,
+	 FALSE,
+	 0,
+	 complain_overflow_dont,
+	 _bfd_elf_rel_vtable_reloc_fn,
+	 "R_NIOS2_GNU_VTENTRY",