* elf-m10300.c: Rename from elf32-mn10300.c.
* cpu-m10200.c: Rename from cpu-mn10200.c
* cpu-m10300.c: Rename from cpu-mn10300.c
* Makefile.in: Update accordingly.
cpu-m68k.c
cpu-m88k.c
cpu-mips.c
-cpu-mn10200.c
-cpu-mn10300.c
+cpu-m10200.c
+cpu-m10300.c
cpu-ns32k.c
cpu-powerpc.c
cpu-rs6000.c
elf32-m68k.c
elf32-m88k.c
elf32-mips.c
-elf32-mn10200.c
-elf32-mn10300.c
+elf-m10200.c
+elf-m10300.c
elf32-ppc.c
elf32-sh.c
elf32-sparc.c
Wed Apr 2 10:49:07 1997 Ian Lance Taylor <ian@cygnus.com>
+ * elf-m10200.c: Rename from elf32-mn10200.c.
+ * elf-m10300.c: Rename from elf32-mn10300.c.
+ * cpu-m10200.c: Rename from cpu-mn10200.c
+ * cpu-m10300.c: Rename from cpu-mn10300.c
+ * Makefile.in: Update accordingly.
+
* elf32-mips.c (elf_mips_ctor64_howto): New static variable.
(elf_mips_isa): Move to earlier in file.
(mips_reloc_map): Remove BFD_RELOC_CTOR entry.
--- /dev/null
+/* BFD support for the Matsushita 10200 processor
+ Copyright 1996, 1997 Free Software Foundation, Inc.
+
+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. */
+
+#include "bfd.h"
+#include "sysdep.h"
+#include "libbfd.h"
+
+const bfd_arch_info_type bfd_mn10200_arch =
+ {
+ 16, /* 16 bits in a word */
+ 24, /* 16 bits in an address */
+ 8, /* 8 bits in a byte */
+ bfd_arch_mn10200,
+ 200,
+ "mn10200",
+ "mn10200",
+ 2,
+ true, /* the one and only */
+ bfd_default_compatible,
+ bfd_default_scan ,
+ 0,
+ };
+++ /dev/null
-/* BFD support for the Matsushita 10200 processor
- Copyright 1996, 1997 Free Software Foundation, Inc.
-
-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. */
-
-#include "bfd.h"
-#include "sysdep.h"
-#include "libbfd.h"
-
-const bfd_arch_info_type bfd_mn10200_arch =
- {
- 16, /* 16 bits in a word */
- 24, /* 16 bits in an address */
- 8, /* 8 bits in a byte */
- bfd_arch_mn10200,
- 200,
- "mn10200",
- "mn10200",
- 2,
- true, /* the one and only */
- bfd_default_compatible,
- bfd_default_scan ,
- 0,
- };
+++ /dev/null
-/* BFD support for the Matsushita 10300 processor
- Copyright 1996, 1997 Free Software Foundation, Inc.
-
-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. */
-
-#include "bfd.h"
-#include "sysdep.h"
-#include "libbfd.h"
-
-const bfd_arch_info_type bfd_mn10300_arch =
- {
- 32, /* 16 bits in a word */
- 32, /* 16 bits in an address */
- 8, /* 8 bits in a byte */
- bfd_arch_mn10300,
- 300,
- "mn10300",
- "mn10300",
- 2,
- true, /* the one and only */
- bfd_default_compatible,
- bfd_default_scan ,
- 0,
- };
--- /dev/null
+/* Matsushita 10200 specific support for 32-bit ELF
+ Copyright (C) 1996, 1997 Free Software Foundation, Inc.
+
+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. */
+
+#include "bfd.h"
+#include "sysdep.h"
+#include "libbfd.h"
+#include "elf-bfd.h"
+
+static reloc_howto_type *bfd_elf32_bfd_reloc_type_lookup
+ PARAMS ((bfd *abfd, bfd_reloc_code_real_type code));
+static void mn10200_info_to_howto
+ PARAMS ((bfd *, arelent *, Elf32_Internal_Rela *));
+static boolean mn10200_elf_relax_delete_bytes
+ PARAMS ((bfd *, asection *, bfd_vma, int));
+static boolean mn10200_elf_symbol_address_p
+ PARAMS ((bfd *, asection *, Elf32_External_Sym *, bfd_vma));
+
+/* We have to use RELA instructions since md_apply_fix3 in the assembler
+ does absolutely nothing. */
+#define USE_RELA
+
+enum reloc_type
+{
+ R_MN10200_NONE = 0,
+ R_MN10200_32,
+ R_MN10200_16,
+ R_MN10200_8,
+ R_MN10200_24,
+ R_MN10200_PCREL8,
+ R_MN10200_PCREL16,
+ R_MN10200_PCREL24,
+ R_MN10200_MAX
+};
+
+static reloc_howto_type elf_mn10200_howto_table[] =
+{
+ /* Dummy relocation. Does nothing. */
+ HOWTO (R_MN10200_NONE,
+ 0,
+ 2,
+ 16,
+ false,
+ 0,
+ complain_overflow_bitfield,
+ bfd_elf_generic_reloc,
+ "R_MN10200_NONE",
+ false,
+ 0,
+ 0,
+ false),
+ /* Standard 32 bit reloc. */
+ HOWTO (R_MN10200_32,
+ 0,
+ 2,
+ 32,
+ false,
+ 0,
+ complain_overflow_bitfield,
+ bfd_elf_generic_reloc,
+ "R_MN10200_32",
+ false,
+ 0xffffffff,
+ 0xffffffff,
+ false),
+ /* Standard 16 bit reloc. */
+ HOWTO (R_MN10200_16,
+ 0,
+ 1,
+ 16,
+ false,
+ 0,
+ complain_overflow_bitfield,
+ bfd_elf_generic_reloc,
+ "R_MN10200_16",
+ false,
+ 0xffff,
+ 0xffff,
+ false),
+ /* Standard 8 bit reloc. */
+ HOWTO (R_MN10200_8,
+ 0,
+ 0,
+ 8,
+ false,
+ 0,
+ complain_overflow_bitfield,
+ bfd_elf_generic_reloc,
+ "R_MN10200_8",
+ false,
+ 0xff,
+ 0xff,
+ false),
+ /* Standard 24 bit reloc. */
+ HOWTO (R_MN10200_24,
+ 0,
+ 2,
+ 24,
+ false,
+ 0,
+ complain_overflow_bitfield,
+ bfd_elf_generic_reloc,
+ "R_MN10200_24",
+ false,
+ 0xffffff,
+ 0xffffff,
+ false),
+ /* Simple 8 pc-relative reloc. */
+ HOWTO (R_MN10200_PCREL8,
+ 0,
+ 0,
+ 8,
+ true,
+ 0,
+ complain_overflow_bitfield,
+ bfd_elf_generic_reloc,
+ "R_MN10200_PCREL8",
+ false,
+ 0xff,
+ 0xff,
+ true),
+ /* Simple 16 pc-relative reloc. */
+ HOWTO (R_MN10200_PCREL16,
+ 0,
+ 1,
+ 16,
+ true,
+ 0,
+ complain_overflow_bitfield,
+ bfd_elf_generic_reloc,
+ "R_MN10200_PCREL16",
+ false,
+ 0xffff,
+ 0xffff,
+ true),
+ /* Simple 32bit pc-relative reloc with a 1 byte adjustment
+ to get the pc-relative offset correct. */
+ HOWTO (R_MN10200_PCREL24,
+ 0,
+ 2,
+ 24,
+ true,
+ 0,
+ complain_overflow_bitfield,
+ bfd_elf_generic_reloc,
+ "R_MN10200_PCREL24",
+ false,
+ 0xffffff,
+ 0xffffff,
+ true),
+};
+
+struct mn10200_reloc_map
+{
+ unsigned char bfd_reloc_val;
+ unsigned char elf_reloc_val;
+};
+
+static const struct mn10200_reloc_map mn10200_reloc_map[] =
+{
+ { BFD_RELOC_NONE, R_MN10200_NONE, },
+ { BFD_RELOC_32, R_MN10200_32, },
+ { BFD_RELOC_16, R_MN10200_16, },
+ { BFD_RELOC_8, R_MN10200_8, },
+ { BFD_RELOC_24, R_MN10200_24, },
+ { BFD_RELOC_8_PCREL, R_MN10200_PCREL8, },
+ { BFD_RELOC_16_PCREL, R_MN10200_PCREL16, },
+ { BFD_RELOC_24_PCREL, R_MN10200_PCREL24, },
+};
+
+static reloc_howto_type *
+bfd_elf32_bfd_reloc_type_lookup (abfd, code)
+ bfd *abfd;
+ bfd_reloc_code_real_type code;
+{
+ unsigned int i;
+
+ for (i = 0;
+ i < sizeof (mn10200_reloc_map) / sizeof (struct mn10200_reloc_map);
+ i++)
+ {
+ if (mn10200_reloc_map[i].bfd_reloc_val == code)
+ return &elf_mn10200_howto_table[mn10200_reloc_map[i].elf_reloc_val];
+ }
+
+ return NULL;
+}
+
+/* Set the howto pointer for an MN10200 ELF reloc. */
+
+static void
+mn10200_info_to_howto (abfd, cache_ptr, dst)
+ bfd *abfd;
+ arelent *cache_ptr;
+ Elf32_Internal_Rela *dst;
+{
+ unsigned int r_type;
+
+ r_type = ELF32_R_TYPE (dst->r_info);
+ BFD_ASSERT (r_type < (unsigned int) R_MN10200_MAX);
+ cache_ptr->howto = &elf_mn10200_howto_table[r_type];
+}
+
+/* Perform a relocation as part of a final link. */
+static bfd_reloc_status_type
+mn10200_elf_final_link_relocate (howto, input_bfd, output_bfd,
+ input_section, contents, offset, value,
+ addend, info, sym_sec, is_local)
+ reloc_howto_type *howto;
+ bfd *input_bfd;
+ bfd *output_bfd;
+ asection *input_section;
+ bfd_byte *contents;
+ bfd_vma offset;
+ bfd_vma value;
+ bfd_vma addend;
+ struct bfd_link_info *info;
+ asection *sym_sec;
+ int is_local;
+{
+ unsigned long r_type = howto->type;
+ bfd_byte *hit_data = contents + offset;
+
+ switch (r_type)
+ {
+
+ case R_MN10200_NONE:
+ return bfd_reloc_ok;
+
+ case R_MN10200_32:
+ value += addend;
+ bfd_put_32 (input_bfd, value, hit_data);
+ return bfd_reloc_ok;
+
+ case R_MN10200_16:
+ value += addend;
+
+ if ((long)value > 0x7fff || (long)value < -0x8000)
+ return bfd_reloc_overflow;
+
+ bfd_put_16 (input_bfd, value, hit_data);
+ return bfd_reloc_ok;
+
+ case R_MN10200_8:
+ value += addend;
+
+ if ((long)value > 0x7fff || (long)value < -0x8000)
+ return bfd_reloc_overflow;
+
+ bfd_put_8 (input_bfd, value, hit_data);
+ return bfd_reloc_ok;
+
+ case R_MN10200_24:
+ value += addend;
+
+ if ((long)value > 0x7fffff || (long)value < -0x800000)
+ return bfd_reloc_overflow;
+
+ value &= 0xffffff;
+ value |= (bfd_get_32 (input_bfd, hit_data) & 0xff000000);
+ bfd_put_32 (input_bfd, value, hit_data);
+ return bfd_reloc_ok;
+
+ case R_MN10200_PCREL8:
+ value -= (input_section->output_section->vma
+ + input_section->output_offset);
+ value -= offset;
+ value += addend;
+
+ if ((long)value > 0xff || (long)value < -0x100)
+ return bfd_reloc_overflow;
+
+ bfd_put_8 (input_bfd, value, hit_data);
+ return bfd_reloc_ok;
+
+ case R_MN10200_PCREL16:
+ value -= (input_section->output_section->vma
+ + input_section->output_offset);
+ value -= offset;
+ value += addend;
+
+ if ((long)value > 0xffff || (long)value < -0x10000)
+ return bfd_reloc_overflow;
+
+ bfd_put_16 (input_bfd, value, hit_data);
+ return bfd_reloc_ok;
+
+ case R_MN10200_PCREL24:
+ value -= (input_section->output_section->vma
+ + input_section->output_offset);
+ value -= offset;
+ value += addend;
+
+ if ((long)value > 0xffffff || (long)value < -0x1000000)
+ return bfd_reloc_overflow;
+
+ value &= 0xffffff;
+ value |= (bfd_get_32 (input_bfd, hit_data) & 0xff000000);
+ bfd_put_32 (input_bfd, value, hit_data);
+ return bfd_reloc_ok;
+
+ default:
+ return bfd_reloc_notsupported;
+ }
+}
+
+\f
+/* Relocate an MN10200 ELF section. */
+static boolean
+mn10200_elf_relocate_section (output_bfd, info, input_bfd, input_section,
+ contents, relocs, local_syms, local_sections)
+ 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;
+{
+ Elf_Internal_Shdr *symtab_hdr;
+ struct elf_link_hash_entry **sym_hashes;
+ Elf_Internal_Rela *rel, *relend;
+
+ symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
+ sym_hashes = elf_sym_hashes (input_bfd);
+
+ rel = relocs;
+ relend = relocs + input_section->reloc_count;
+ for (; rel < relend; rel++)
+ {
+ int r_type;
+ reloc_howto_type *howto;
+ unsigned long r_symndx;
+ Elf_Internal_Sym *sym;
+ asection *sec;
+ struct elf_link_hash_entry *h;
+ bfd_vma relocation;
+ bfd_reloc_status_type r;
+
+ r_symndx = ELF32_R_SYM (rel->r_info);
+ r_type = ELF32_R_TYPE (rel->r_info);
+ howto = elf_mn10200_howto_table + r_type;
+
+ if (info->relocateable)
+ {
+ /* This is a relocateable link. We don't have to change
+ anything, unless the reloc is against a section symbol,
+ in which case we have to adjust according to where the
+ section symbol winds up in the output section. */
+ if (r_symndx < symtab_hdr->sh_info)
+ {
+ sym = local_syms + r_symndx;
+ if (ELF_ST_TYPE (sym->st_info) == STT_SECTION)
+ {
+ sec = local_sections[r_symndx];
+ rel->r_addend += sec->output_offset + sym->st_value;
+ }
+ }
+
+ continue;
+ }
+
+ /* This is a final link. */
+ h = NULL;
+ sym = NULL;
+ sec = NULL;
+ if (r_symndx < symtab_hdr->sh_info)
+ {
+ sym = local_syms + r_symndx;
+ sec = local_sections[r_symndx];
+ relocation = (sec->output_section->vma
+ + sec->output_offset
+ + sym->st_value);
+ }
+ else
+ {
+ h = sym_hashes[r_symndx - symtab_hdr->sh_info];
+ while (h->root.type == bfd_link_hash_indirect
+ || h->root.type == bfd_link_hash_warning)
+ h = (struct elf_link_hash_entry *) h->root.u.i.link;
+ if (h->root.type == bfd_link_hash_defined
+ || h->root.type == bfd_link_hash_defweak)
+ {
+ sec = h->root.u.def.section;
+ relocation = (h->root.u.def.value
+ + sec->output_section->vma
+ + sec->output_offset);
+ }
+ else if (h->root.type == bfd_link_hash_undefweak)
+ relocation = 0;
+ else
+ {
+ if (! ((*info->callbacks->undefined_symbol)
+ (info, h->root.root.string, input_bfd,
+ input_section, rel->r_offset)))
+ return false;
+ relocation = 0;
+ }
+ }
+
+ r = mn10200_elf_final_link_relocate (howto, input_bfd, output_bfd,
+ input_section,
+ contents, rel->r_offset,
+ relocation, rel->r_addend,
+ info, sec, h == NULL);
+
+ if (r != bfd_reloc_ok)
+ {
+ const char *name;
+ const char *msg = (const char *)0;
+
+ if (h != NULL)
+ name = h->root.root.string;
+ else
+ {
+ name = (bfd_elf_string_from_elf_section
+ (input_bfd, symtab_hdr->sh_link, sym->st_name));
+ if (name == NULL || *name == '\0')
+ name = bfd_section_name (input_bfd, sec);
+ }
+
+ switch (r)
+ {
+ case bfd_reloc_overflow:
+ if (! ((*info->callbacks->reloc_overflow)
+ (info, name, howto->name, (bfd_vma) 0,
+ input_bfd, input_section, rel->r_offset)))
+ return false;
+ break;
+
+ case bfd_reloc_undefined:
+ if (! ((*info->callbacks->undefined_symbol)
+ (info, name, input_bfd, input_section,
+ rel->r_offset)))
+ return false;
+ break;
+
+ case bfd_reloc_outofrange:
+ msg = "internal error: out of range error";
+ goto common_error;
+
+ case bfd_reloc_notsupported:
+ msg = "internal error: unsupported relocation error";
+ goto common_error;
+
+ case bfd_reloc_dangerous:
+ msg = "internal error: dangerous error";
+ goto common_error;
+
+ default:
+ msg = "internal error: unknown error";
+ /* fall through */
+
+ common_error:
+ if (!((*info->callbacks->warning)
+ (info, msg, name, input_bfd, input_section,
+ rel->r_offset)))
+ return false;
+ break;
+ }
+ }
+ }
+
+ return true;
+}
+
+/* This function handles relaxing for the mn10200.
+
+ There's quite a few relaxing opportunites available on the mn10200:
+
+ * jsr:24 -> jsr:16 2 bytes
+
+ * jmp:24 -> jmp:16 2 bytes
+ * jmp:16 -> bra:8 1 byte
+
+ * If the previous instruction is a conditional branch
+ around the jump/bra, we may be able to reverse its condition
+ and change its target to the jump's target. The jump/bra
+ can then be deleted. 2 bytes
+
+ * mov abs24 -> mov abs16 2 byte savings
+
+ * Most instructions which accept imm24 can relax to imm16 2 bytes
+ - Most instructions which accept imm16 can relax to imm8 1 byte
+
+ * Most instructions which accept d24 can relax to d16 2 bytes
+ - Most instructions which accept d16 can relax to d8 1 byte
+
+ abs24, imm24, d24 all look the same at the reloc level. It
+ might make the code simpler if we had different relocs for
+ the various relaxable operand types.
+
+ We don't handle imm16->imm8 or d16->d8 as they're very rare
+ and somewhat more difficult to support. */
+
+static boolean
+mn10200_elf_relax_section (abfd, sec, link_info, again)
+ bfd *abfd;
+ asection *sec;
+ struct bfd_link_info *link_info;
+ boolean *again;
+{
+ Elf_Internal_Shdr *symtab_hdr;
+ Elf_Internal_Rela *internal_relocs;
+ Elf_Internal_Rela *free_relocs = NULL;
+ Elf_Internal_Rela *irel, *irelend;
+ bfd_byte *contents = NULL;
+ bfd_byte *free_contents = NULL;
+ Elf32_External_Sym *extsyms = NULL;
+ Elf32_External_Sym *free_extsyms = NULL;
+
+ /* Assume nothing changes. */
+ *again = false;
+
+ /* We don't have to do anything for a relocateable link, if
+ this section does not have relocs, or if this is not a
+ code section. */
+ if (link_info->relocateable
+ || (sec->flags & SEC_RELOC) == 0
+ || sec->reloc_count == 0
+ || (sec->flags & SEC_CODE) == 0)
+ return true;
+
+ /* If this is the first time we have been called for this section,
+ initialize the cooked size. */
+ if (sec->_cooked_size == 0)
+ sec->_cooked_size = sec->_raw_size;
+
+ symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
+
+ /* Get a copy of the native relocations. */
+ internal_relocs = (_bfd_elf32_link_read_relocs
+ (abfd, sec, (PTR) NULL, (Elf_Internal_Rela *) NULL,
+ link_info->keep_memory));
+ if (internal_relocs == NULL)
+ goto error_return;
+ if (! link_info->keep_memory)
+ free_relocs = internal_relocs;
+
+ /* Walk through them looking for relaxing opportunities. */
+ irelend = internal_relocs + sec->reloc_count;
+ for (irel = internal_relocs; irel < irelend; irel++)
+ {
+ bfd_vma symval;
+
+ /* If this isn't something that can be relaxed, then ignore
+ this reloc. */
+ if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10200_NONE
+ || ELF32_R_TYPE (irel->r_info) == (int) R_MN10200_8
+ || ELF32_R_TYPE (irel->r_info) == (int) R_MN10200_MAX)
+ continue;
+
+ /* Get the section contents if we haven't done so already. */
+ if (contents == NULL)
+ {
+ /* Get cached copy if it exists. */
+ if (elf_section_data (sec)->this_hdr.contents != NULL)
+ contents = elf_section_data (sec)->this_hdr.contents;
+ else
+ {
+ /* Go get them off disk. */
+ contents = (bfd_byte *) bfd_malloc (sec->_raw_size);
+ if (contents == NULL)
+ goto error_return;
+ free_contents = contents;
+
+ if (! bfd_get_section_contents (abfd, sec, contents,
+ (file_ptr) 0, sec->_raw_size))
+ goto error_return;
+ }
+ }
+
+ /* Read the local symbols if we haven't done so already. */
+ if (extsyms == NULL)
+ {
+ /* Get cached copy if it exists. */
+ if (symtab_hdr->contents != NULL)
+ extsyms = (Elf32_External_Sym *) symtab_hdr->contents;
+ else
+ {
+ /* Go get them off disk. */
+ extsyms = ((Elf32_External_Sym *)
+ bfd_malloc (symtab_hdr->sh_info
+ * sizeof (Elf32_External_Sym)));
+ if (extsyms == NULL)
+ goto error_return;
+ free_extsyms = extsyms;
+ if (bfd_seek (abfd, symtab_hdr->sh_offset, SEEK_SET) != 0
+ || (bfd_read (extsyms, sizeof (Elf32_External_Sym),
+ symtab_hdr->sh_info, abfd)
+ != (symtab_hdr->sh_info * sizeof (Elf32_External_Sym))))
+ goto error_return;
+ }
+ }
+
+ /* Get the value of the symbol referred to by the reloc. */
+ if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
+ {
+ Elf_Internal_Sym isym;
+ asection *sym_sec;
+
+ /* A local symbol. */
+ bfd_elf32_swap_symbol_in (abfd,
+ extsyms + ELF32_R_SYM (irel->r_info),
+ &isym);
+
+ sym_sec = bfd_section_from_elf_index (abfd, isym.st_shndx);
+ symval = (isym.st_value
+ + sym_sec->output_section->vma
+ + sym_sec->output_offset);
+ }
+ else
+ {
+ unsigned long indx;
+ struct elf_link_hash_entry *h;
+
+ /* An external symbol. */
+ indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
+ h = elf_sym_hashes (abfd)[indx];
+ BFD_ASSERT (h != NULL);
+ if (h->root.type != bfd_link_hash_defined
+ && h->root.type != bfd_link_hash_defweak)
+ {
+ /* This appears to be a reference to an undefined
+ symbol. Just ignore it--it will be caught by the
+ regular reloc processing. */
+ continue;
+ }
+
+ symval = (h->root.u.def.value
+ + h->root.u.def.section->output_section->vma
+ + h->root.u.def.section->output_offset);
+ }
+
+ /* For simplicity of coding, we are going to modify the section
+ contents, the section relocs, and the BFD symbol table. We
+ must tell the rest of the code not to free up this
+ information. It would be possible to instead create a table
+ of changes which have to be made, as is done in coff-mips.c;
+ that would be more work, but would require less memory when
+ the linker is run. */
+
+
+ /* Try to turn a 24bit pc-relative branch/call into a 16bit pc-relative
+ branch/call. */
+ if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10200_PCREL24)
+ {
+ bfd_vma value = symval;
+
+ /* Deal with pc-relative gunk. */
+ value -= (sec->output_section->vma + sec->output_offset);
+ value -= irel->r_offset;
+ value += irel->r_addend;
+
+ /* See if the value will fit in 16 bits, note the high value is
+ 0x7fff + 2 as the target will be two bytes closer if we are
+ able to relax. */
+ if ((long)value < 0x8001 && (long)value > -0x8000)
+ {
+ unsigned char code;
+
+ /* Get the opcode. */
+ code = bfd_get_8 (abfd, contents + irel->r_offset - 1);
+
+ if (code != 0xe0 && code != 0xe1)
+ continue;
+
+ /* Note that we've changed the relocs, section contents, etc. */
+ elf_section_data (sec)->relocs = internal_relocs;
+ free_relocs = NULL;
+
+ elf_section_data (sec)->this_hdr.contents = contents;
+ free_contents = NULL;
+
+ symtab_hdr->contents = (bfd_byte *) extsyms;
+ free_extsyms = NULL;
+
+ /* Fix the opcode. */
+ if (code == 0xe0)
+ bfd_put_8 (abfd, 0xfc, contents + irel->r_offset - 2);
+ else if (code == 0xe1)
+ bfd_put_8 (abfd, 0xfd, contents + irel->r_offset - 2);
+
+ /* Fix the relocation's type. */
+ irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
+ R_MN10200_PCREL16);
+
+ /* The opcode got shorter too, so we have to fix the
+ addend and offset too! */
+ irel->r_addend -= 1;
+ irel->r_offset -= 1;
+
+ /* Delete two bytes of data. */
+ if (!mn10200_elf_relax_delete_bytes (abfd, sec,
+ irel->r_offset + 1, 2))
+ goto error_return;
+
+ /* That will change things, so, we should relax again.
+ Note that this is not required, and it may be slow. */
+ *again = true;
+ }
+ }
+
+ /* Try to turn a 16bit pc-relative branch into a 8bit pc-relative
+ branch. */
+ if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10200_PCREL16)
+ {
+ bfd_vma value = symval;
+
+ /* Deal with pc-relative gunk. */
+ value -= (sec->output_section->vma + sec->output_offset);
+ value -= irel->r_offset;
+ value += irel->r_addend;
+
+ /* See if the value will fit in 8 bits, note the high value is
+ 0x7f + 1 as the target will be one bytes closer if we are
+ able to relax. */
+ if ((long)value < 0x80 && (long)value > -0x80)
+ {
+ unsigned char code;
+
+ /* Get the opcode. */
+ code = bfd_get_8 (abfd, contents + irel->r_offset - 1);
+
+ if (code != 0xfc)
+ continue;
+
+ /* Note that we've changed the relocs, section contents, etc. */
+ elf_section_data (sec)->relocs = internal_relocs;
+ free_relocs = NULL;
+
+ elf_section_data (sec)->this_hdr.contents = contents;
+ free_contents = NULL;
+
+ symtab_hdr->contents = (bfd_byte *) extsyms;
+ free_extsyms = NULL;
+
+ /* Fix the opcode. */
+ bfd_put_8 (abfd, 0xea, contents + irel->r_offset - 1);
+
+ /* Fix the relocation's type. */
+ irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
+ R_MN10200_PCREL8);
+
+ /* Delete one byte of data. */
+ if (!mn10200_elf_relax_delete_bytes (abfd, sec,
+ irel->r_offset + 1, 1))
+ goto error_return;
+
+ /* That will change things, so, we should relax again.
+ Note that this is not required, and it may be slow. */
+ *again = true;
+ }
+ }
+
+ /* Try to eliminate an unconditional 8 bit pc-relative branch
+ which immediately follows a conditional 8 bit pc-relative
+ branch around the unconditional branch.
+
+ original: new:
+ bCC lab1 bCC' lab2
+ bra lab2
+ lab1: lab1:
+
+
+ This happens when the bCC can't reach lab2 at assembly time,
+ but due to other relaxations it can reach at link time. */
+ if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10200_PCREL8)
+ {
+ Elf_Internal_Rela *nrel;
+ bfd_vma value = symval;
+ unsigned char code;
+
+ /* Deal with pc-relative gunk. */
+ value -= (sec->output_section->vma + sec->output_offset);
+ value -= irel->r_offset;
+ value += irel->r_addend;
+
+ /* Do nothing if this reloc is the last byte in the section. */
+ if (irel->r_offset == sec->_cooked_size)
+ continue;
+
+ /* See if the next instruction is an unconditional pc-relative
+ branch, more often than not this test will fail, so we
+ test it first to speed things up. */
+ code = bfd_get_8 (abfd, contents + irel->r_offset + 1);
+ if (code != 0xea)
+ continue;
+
+ /* Also make sure the next relocation applies to the next
+ instruction and that it's a pc-relative 8 bit branch. */
+ nrel = irel + 1;
+ if (nrel == irelend
+ || irel->r_offset + 2 != nrel->r_offset
+ || ELF32_R_TYPE (nrel->r_info) != (int) R_MN10200_PCREL8)
+ continue;
+
+ /* Make sure our destination immediately follows the
+ unconditional branch. */
+ if (symval != (sec->output_section->vma + sec->output_offset
+ + irel->r_offset + 3))
+ continue;
+
+ /* Now make sure we are a conditional branch. This may not
+ be necessary, but why take the chance.
+
+ Note these checks assume that R_MN10200_PCREL8 relocs
+ only occur on bCC and bCCx insns. If they occured
+ elsewhere, we'd need to know the start of this insn
+ for this check to be accurate. */
+ code = bfd_get_8 (abfd, contents + irel->r_offset - 1);
+ if (code != 0xe0 && code != 0xe1 && code != 0xe2
+ && code != 0xe3 && code != 0xe4 && code != 0xe5
+ && code != 0xe6 && code != 0xe7 && code != 0xe8
+ && code != 0xe9 && code != 0xec && code != 0xed
+ && code != 0xee && code != 0xef && code != 0xfc
+ && code != 0xfd && code != 0xfe && code != 0xff)
+ continue;
+
+ /* We also have to be sure there is no symbol/label
+ at the unconditional branch. */
+ if (mn10200_elf_symbol_address_p (abfd, sec, extsyms,
+ irel->r_offset + 1))
+ continue;
+
+ /* Note that we've changed the relocs, section contents, etc. */
+ elf_section_data (sec)->relocs = internal_relocs;
+ free_relocs = NULL;
+
+ elf_section_data (sec)->this_hdr.contents = contents;
+ free_contents = NULL;
+
+ symtab_hdr->contents = (bfd_byte *) extsyms;
+ free_extsyms = NULL;
+
+ /* Reverse the condition of the first branch. */
+ switch (code)
+ {
+ case 0xfc:
+ code = 0xfd;
+ break;
+ case 0xfd:
+ code = 0xfc;
+ break;
+ case 0xfe:
+ code = 0xff;
+ break;
+ case 0xff:
+ code = 0xfe;
+ break;
+ case 0xe8:
+ code = 0xe9;
+ break;
+ case 0xe9:
+ code = 0xe8;
+ break;
+ case 0xe0:
+ code = 0xe2;
+ break;
+ case 0xe2:
+ code = 0xe0;
+ break;
+ case 0xe3:
+ code = 0xe1;
+ break;
+ case 0xe1:
+ code = 0xe3;
+ break;
+ case 0xe4:
+ code = 0xe6;
+ break;
+ case 0xe6:
+ code = 0xe4;
+ break;
+ case 0xe7:
+ code = 0xe5;
+ break;
+ case 0xe5:
+ code = 0xe7;
+ break;
+ case 0xec:
+ code = 0xed;
+ break;
+ case 0xed:
+ code = 0xec;
+ break;
+ case 0xee:
+ code = 0xef;
+ break;
+ case 0xef:
+ code = 0xee;
+ break;
+ }
+ bfd_put_8 (abfd, code, contents + irel->r_offset - 1);
+
+ /* Set the reloc type and symbol for the first branch
+ from the second branch. */
+ irel->r_info = nrel->r_info;
+
+ /* Make the reloc for the second branch a null reloc. */
+ nrel->r_info = ELF32_R_INFO (ELF32_R_SYM (nrel->r_info),
+ R_MN10200_NONE);
+
+ /* Delete two bytes of data. */
+ if (!mn10200_elf_relax_delete_bytes (abfd, sec,
+ irel->r_offset + 1, 2))
+ goto error_return;
+
+ /* That will change things, so, we should relax again.
+ Note that this is not required, and it may be slow. */
+ *again = true;
+ }
+
+ /* Try to turn a 24bit immediate, displacement or absolute address
+ into a 16bit immediate, displacement or absolute address. */
+ if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10200_24)
+ {
+ bfd_vma value = symval;
+
+ /* See if the value will fit in 16 bits.
+ We allow any 16bit match here. We prune those we can't
+ handle below. */
+ if ((long)value < 0x7fff && (long)value > -0x8000)
+ {
+ unsigned char code;
+
+ /* All insns which have 24bit operands are 5 bytes long,
+ the first byte will always be 0xf4, but we double check
+ it just in case. */
+
+ /* Get the first opcode. */
+ code = bfd_get_8 (abfd, contents + irel->r_offset - 2);
+
+ if (code != 0xf4)
+ continue;
+
+ /* Get the second opcode. */
+ code = bfd_get_8 (abfd, contents + irel->r_offset - 1);
+
+ switch (code & 0xfc)
+ {
+ /* mov imm24,dn -> mov imm16,dn */
+ case 0x70:
+ /* Not safe if the high bit is on as relaxing may
+ move the value out of high mem and thus not fit
+ in a signed 16bit value. */
+ if (value & 0x8000)
+ continue;
+
+ /* Note that we've changed the reldection contents, etc. */
+ elf_section_data (sec)->relocs = internal_relocs;
+ free_relocs = NULL;
+
+ elf_section_data (sec)->this_hdr.contents = contents;
+ free_contents = NULL;
+
+ symtab_hdr->contents = (bfd_byte *) extsyms;
+ free_extsyms = NULL;
+
+ /* Fix the opcode. */
+ bfd_put_8 (abfd, 0xf8 + (code & 0x03),
+ contents + irel->r_offset - 2);
+
+ /* Fix the relocation's type. */
+ irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
+ R_MN10200_16);
+
+ /* The opcode got shorter too, so we have to fix the
+ addend and offset too! */
+ irel->r_offset -= 1;
+
+ /* Delete two bytes of data. */
+ if (!mn10200_elf_relax_delete_bytes (abfd, sec,
+ irel->r_offset + 1, 2))
+ goto error_return;
+
+ /* That will change things, so, we should relax again.
+ Note that this is not required, and it may be slow. */
+ *again = true;
+ break;
+
+ /* mov imm24,an -> mov imm16,an
+ cmp imm24,an -> cmp imm16,an
+ mov (abs24),dn -> mov (abs16),dn
+ mov dn,(abs24) -> mov dn,(abs16)
+ movb dn,(abs24) -> movb dn,(abs16)
+ movbu (abs24),dn -> movbu (abs16),dn */
+ case 0x74:
+ case 0x7c:
+ case 0xc0:
+ case 0x40:
+ case 0x44:
+ case 0xc8:
+ /* Note that we've changed the reldection contents, etc. */
+ elf_section_data (sec)->relocs = internal_relocs;
+ free_relocs = NULL;
+
+ elf_section_data (sec)->this_hdr.contents = contents;
+ free_contents = NULL;
+
+ symtab_hdr->contents = (bfd_byte *) extsyms;
+ free_extsyms = NULL;
+
+ if ((code & 0xfc) == 0x74)
+ code = 0xdc + (code & 0x03);
+ else if ((code & 0xfc) == 0x7c)
+ code = 0xec + (code & 0x03);
+ else if ((code & 0xfc) == 0xc0)
+ code = 0xc8 + (code & 0x03);
+ else if ((code & 0xfc) == 0x40)
+ code = 0xc0 + (code & 0x03);
+ else if ((code & 0xfc) == 0x44)
+ code = 0xc4 + (code & 0x03);
+ else if ((code & 0xfc) == 0xc8)
+ code = 0xcc + (code & 0x03);
+
+ /* Fix the opcode. */
+ bfd_put_8 (abfd, code, contents + irel->r_offset - 2);
+
+ /* Fix the relocation's type. */
+ irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
+ R_MN10200_16);
+
+ /* The opcode got shorter too, so we have to fix the
+ addend and offset too! */
+ irel->r_offset -= 1;
+
+ /* Delete two bytes of data. */
+ if (!mn10200_elf_relax_delete_bytes (abfd, sec,
+ irel->r_offset + 1, 2))
+ goto error_return;
+
+ /* That will change things, so, we should relax again.
+ Note that this is not required, and it may be slow. */
+ *again = true;
+ break;
+
+ /* cmp imm24,dn -> cmp imm16,dn
+ mov (abs24),an -> mov (abs16),an
+ mov an,(abs24) -> mov an,(abs16)
+ add imm24,dn -> add imm16,dn
+ add imm24,an -> add imm16,an
+ sub imm24,dn -> sub imm16,dn
+ sub imm24,an -> sub imm16,an
+ And all d24->d16 in memory ops. */
+ case 0x78:
+ case 0xd0:
+ case 0x50:
+ case 0x60:
+ case 0x64:
+ case 0x68:
+ case 0x6c:
+ case 0x80:
+ case 0xf0:
+ case 0x00:
+ case 0x10:
+ case 0xb0:
+ case 0x30:
+ case 0xa0:
+ case 0x20:
+ case 0x90:
+ /* Not safe if the high bit is on as relaxing may
+ move the value out of high mem and thus not fit
+ in a signed 16bit value. */
+ if (((code & 0xfc) == 0x78
+ || (code & 0xfc) == 0x60
+ || (code & 0xfc) == 0x64
+ || (code & 0xfc) == 0x68
+ || (code & 0xfc) == 0x6c
+ || (code & 0xfc) == 0x80
+ || (code & 0xfc) == 0xf0
+ || (code & 0xfc) == 0x00
+ || (code & 0xfc) == 0x10
+ || (code & 0xfc) == 0xb0
+ || (code & 0xfc) == 0x30
+ || (code & 0xfc) == 0xa0
+ || (code & 0xfc) == 0x20
+ || (code & 0xfc) == 0x90)
+ && (value & 0x8000) != 0)
+ continue;
+
+ /* Note that we've changed the reldection contents, etc. */
+ elf_section_data (sec)->relocs = internal_relocs;
+ free_relocs = NULL;
+
+ elf_section_data (sec)->this_hdr.contents = contents;
+ free_contents = NULL;
+
+ symtab_hdr->contents = (bfd_byte *) extsyms;
+ free_extsyms = NULL;
+
+ /* Fix the opcode. */
+ bfd_put_8 (abfd, 0xf7, contents + irel->r_offset - 2);
+
+ if ((code & 0xfc) == 0x78)
+ code = 0x48 + (code & 0x03);
+ else if ((code & 0xfc) == 0xd0)
+ code = 0x30 + (code & 0x03);
+ else if ((code & 0xfc) == 0x50)
+ code = 0x20 + (code & 0x03);
+ else if ((code & 0xfc) == 0x60)
+ code = 0x18 + (code & 0x03);
+ else if ((code & 0xfc) == 0x64)
+ code = 0x08 + (code & 0x03);
+ else if ((code & 0xfc) == 0x68)
+ code = 0x1c + (code & 0x03);
+ else if ((code & 0xfc) == 0x6c)
+ code = 0x0c + (code & 0x03);
+ else if ((code & 0xfc) == 0x80)
+ code = 0xc0 + (code & 0x07);
+ else if ((code & 0xfc) == 0xf0)
+ code = 0xb0 + (code & 0x07);
+ else if ((code & 0xfc) == 0x00)
+ code = 0x80 + (code & 0x07);
+ else if ((code & 0xfc) == 0x10)
+ code = 0xa0 + (code & 0x07);
+ else if ((code & 0xfc) == 0xb0)
+ code = 0x70 + (code & 0x07);
+ else if ((code & 0xfc) == 0x30)
+ code = 0x60 + (code & 0x07);
+ else if ((code & 0xfc) == 0xa0)
+ code = 0xd0 + (code & 0x07);
+ else if ((code & 0xfc) == 0x20)
+ code = 0x90 + (code & 0x07);
+ else if ((code & 0xfc) == 0x90)
+ code = 0x50 + (code & 0x07);
+
+ bfd_put_8 (abfd, code, contents + irel->r_offset - 1);
+
+ /* Fix the relocation's type. */
+ irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
+ R_MN10200_16);
+
+ /* Delete one bytes of data. */
+ if (!mn10200_elf_relax_delete_bytes (abfd, sec,
+ irel->r_offset + 2, 1))
+ goto error_return;
+
+ /* That will change things, so, we should relax again.
+ Note that this is not required, and it may be slow. */
+ *again = true;
+ break;
+
+ /* movb (abs24),dn ->movbu (abs16),dn extxb bn */
+ case 0xc4:
+ /* Note that we've changed the reldection contents, etc. */
+ elf_section_data (sec)->relocs = internal_relocs;
+ free_relocs = NULL;
+
+ elf_section_data (sec)->this_hdr.contents = contents;
+ free_contents = NULL;
+
+ symtab_hdr->contents = (bfd_byte *) extsyms;
+ free_extsyms = NULL;
+
+ bfd_put_8 (abfd, 0xcc + (code & 0x03),
+ contents + irel->r_offset - 2);
+
+ bfd_put_8 (abfd, 0xb8 + (code & 0x03),
+ contents + irel->r_offset - 1);
+
+ /* Fix the relocation's type. */
+ irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
+ R_MN10200_16);
+
+ /* The reloc will be applied one byte in front of its
+ current location. */
+ irel->r_offset -= 1;
+
+ /* Delete one bytes of data. */
+ if (!mn10200_elf_relax_delete_bytes (abfd, sec,
+ irel->r_offset + 2, 1))
+ goto error_return;
+
+ /* That will change things, so, we should relax again.
+ Note that this is not required, and it may be slow. */
+ *again = true;
+ break;
+ }
+ }
+ }
+ }
+
+ if (free_relocs != NULL)
+ {
+ free (free_relocs);
+ free_relocs = NULL;
+ }
+
+ if (free_contents != NULL)
+ {
+ if (! link_info->keep_memory)
+ free (free_contents);
+ else
+ {
+ /* Cache the section contents for elf_link_input_bfd. */
+ elf_section_data (sec)->this_hdr.contents = contents;
+ }
+ free_contents = NULL;
+ }
+
+ if (free_extsyms != NULL)
+ {
+ if (! link_info->keep_memory)
+ free (free_extsyms);
+ else
+ {
+ /* Cache the symbols for elf_link_input_bfd. */
+ symtab_hdr->contents = extsyms;
+ }
+ free_extsyms = NULL;
+ }
+
+ return true;
+
+ error_return:
+ if (free_relocs != NULL)
+ free (free_relocs);
+ if (free_contents != NULL)
+ free (free_contents);
+ if (free_extsyms != NULL)
+ free (free_extsyms);
+ return false;
+}
+
+/* Delete some bytes from a section while relaxing. */
+
+static boolean
+mn10200_elf_relax_delete_bytes (abfd, sec, addr, count)
+ bfd *abfd;
+ asection *sec;
+ bfd_vma addr;
+ int count;
+{
+ Elf_Internal_Shdr *symtab_hdr;
+ Elf32_External_Sym *extsyms;
+ int shndx;
+ bfd_byte *contents;
+ Elf_Internal_Rela *irel, *irelend;
+ Elf_Internal_Rela *irelalign;
+ bfd_vma toaddr;
+ Elf32_External_Sym *esym, *esymend;
+ struct elf_link_hash_entry **sym_hash, **sym_hash_end;
+
+ symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
+ extsyms = (Elf32_External_Sym *) symtab_hdr->contents;
+
+ shndx = _bfd_elf_section_from_bfd_section (abfd, sec);
+
+ contents = elf_section_data (sec)->this_hdr.contents;
+
+ /* The deletion must stop at the next ALIGN reloc for an aligment
+ power larger than the number of bytes we are deleting. */
+
+ irelalign = NULL;
+ toaddr = sec->_cooked_size;
+
+ irel = elf_section_data (sec)->relocs;
+ irelend = irel + sec->reloc_count;
+
+ /* Actually delete the bytes. */
+ memmove (contents + addr, contents + addr + count, toaddr - addr - count);
+ sec->_cooked_size -= count;
+
+ /* Adjust all the relocs. */
+ for (irel = elf_section_data (sec)->relocs; irel < irelend; irel++)
+ {
+ /* Get the new reloc address. */
+ if ((irel->r_offset > addr
+ && irel->r_offset < toaddr))
+ irel->r_offset -= count;
+ }
+
+ /* Adjust all the symbols. */
+ esym = extsyms;
+ esymend = esym + symtab_hdr->sh_info;
+ for (; esym < esymend; esym++)
+ {
+ Elf_Internal_Sym isym;
+
+ bfd_elf32_swap_symbol_in (abfd, esym, &isym);
+
+ if (isym.st_shndx == shndx
+ && isym.st_value > addr
+ && isym.st_value < toaddr)
+ {
+ isym.st_value -= count;
+ bfd_elf32_swap_symbol_out (abfd, &isym, esym);
+ }
+ }
+
+ sym_hash = elf_sym_hashes (abfd);
+ sym_hash_end = (sym_hash
+ + (symtab_hdr->sh_size / sizeof (Elf32_External_Sym)
+ - symtab_hdr->sh_info));
+ for (; sym_hash < sym_hash_end; sym_hash++)
+ {
+ if (((*sym_hash)->root.type == bfd_link_hash_defined
+ || (*sym_hash)->root.type == bfd_link_hash_defweak)
+ && (*sym_hash)->root.u.def.section == sec
+ && (*sym_hash)->root.u.def.value > addr
+ && (*sym_hash)->root.u.def.value < toaddr)
+ {
+ (*sym_hash)->root.u.def.value -= count;
+ }
+ }
+
+ return true;
+}
+
+/* Return true if a symbol exists at the given address, else return
+ false. */
+static boolean
+mn10200_elf_symbol_address_p (abfd, sec, extsyms, addr)
+ bfd *abfd;
+ asection *sec;
+ Elf32_External_Sym *extsyms;
+ bfd_vma addr;
+{
+ Elf_Internal_Shdr *symtab_hdr;
+ int shndx;
+ Elf32_External_Sym *esym, *esymend;
+ struct elf_link_hash_entry **sym_hash, **sym_hash_end;
+
+ symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
+ shndx = _bfd_elf_section_from_bfd_section (abfd, sec);
+
+ /* Examine all the symbols. */
+ esym = extsyms;
+ esymend = esym + symtab_hdr->sh_info;
+ for (; esym < esymend; esym++)
+ {
+ Elf_Internal_Sym isym;
+
+ bfd_elf32_swap_symbol_in (abfd, esym, &isym);
+
+ if (isym.st_shndx == shndx
+ && isym.st_value == addr)
+ return true;
+ }
+
+ sym_hash = elf_sym_hashes (abfd);
+ sym_hash_end = (sym_hash
+ + (symtab_hdr->sh_size / sizeof (Elf32_External_Sym)
+ - symtab_hdr->sh_info));
+ for (; sym_hash < sym_hash_end; sym_hash++)
+ {
+ if (((*sym_hash)->root.type == bfd_link_hash_defined
+ || (*sym_hash)->root.type == bfd_link_hash_defweak)
+ && (*sym_hash)->root.u.def.section == sec
+ && (*sym_hash)->root.u.def.value == addr)
+ return true;
+ }
+ return false;
+}
+
+/* This is a version of bfd_generic_get_relocated_section_contents
+ which uses mn10200_elf_relocate_section. */
+
+static bfd_byte *
+mn10200_elf_get_relocated_section_contents (output_bfd, link_info, link_order,
+ data, relocateable, symbols)
+ bfd *output_bfd;
+ struct bfd_link_info *link_info;
+ struct bfd_link_order *link_order;
+ bfd_byte *data;
+ boolean relocateable;
+ asymbol **symbols;
+{
+ Elf_Internal_Shdr *symtab_hdr;
+ asection *input_section = link_order->u.indirect.section;
+ bfd *input_bfd = input_section->owner;
+ asection **sections = NULL;
+ Elf_Internal_Rela *internal_relocs = NULL;
+ Elf32_External_Sym *external_syms = NULL;
+ Elf_Internal_Sym *internal_syms = NULL;
+
+ /* We only need to handle the case of relaxing, or of having a
+ particular set of section contents, specially. */
+ if (relocateable
+ || elf_section_data (input_section)->this_hdr.contents == NULL)
+ return bfd_generic_get_relocated_section_contents (output_bfd, link_info,
+ link_order, data,
+ relocateable,
+ symbols);
+
+ symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
+
+ memcpy (data, elf_section_data (input_section)->this_hdr.contents,
+ input_section->_raw_size);
+
+ if ((input_section->flags & SEC_RELOC) != 0
+ && input_section->reloc_count > 0)
+ {
+ Elf_Internal_Sym *isymp;
+ asection **secpp;
+ Elf32_External_Sym *esym, *esymend;
+
+ if (symtab_hdr->contents != NULL)
+ external_syms = (Elf32_External_Sym *) symtab_hdr->contents;
+ else
+ {
+ external_syms = ((Elf32_External_Sym *)
+ bfd_malloc (symtab_hdr->sh_info
+ * sizeof (Elf32_External_Sym)));
+ if (external_syms == NULL && symtab_hdr->sh_info > 0)
+ goto error_return;
+ if (bfd_seek (input_bfd, symtab_hdr->sh_offset, SEEK_SET) != 0
+ || (bfd_read (external_syms, sizeof (Elf32_External_Sym),
+ symtab_hdr->sh_info, input_bfd)
+ != (symtab_hdr->sh_info * sizeof (Elf32_External_Sym))))
+ goto error_return;
+ }
+
+ internal_relocs = (_bfd_elf32_link_read_relocs
+ (input_bfd, input_section, (PTR) NULL,
+ (Elf_Internal_Rela *) NULL, false));
+ if (internal_relocs == NULL)
+ goto error_return;
+
+ internal_syms = ((Elf_Internal_Sym *)
+ bfd_malloc (symtab_hdr->sh_info
+ * sizeof (Elf_Internal_Sym)));
+ if (internal_syms == NULL && symtab_hdr->sh_info > 0)
+ goto error_return;
+
+ sections = (asection **) bfd_malloc (symtab_hdr->sh_info
+ * sizeof (asection *));
+ if (sections == NULL && symtab_hdr->sh_info > 0)
+ goto error_return;
+
+ isymp = internal_syms;
+ secpp = sections;
+ esym = external_syms;
+ esymend = esym + symtab_hdr->sh_info;
+ for (; esym < esymend; ++esym, ++isymp, ++secpp)
+ {
+ asection *isec;
+
+ bfd_elf32_swap_symbol_in (input_bfd, esym, isymp);
+
+ if (isymp->st_shndx == SHN_UNDEF)
+ isec = bfd_und_section_ptr;
+ else if (isymp->st_shndx > 0 && isymp->st_shndx < SHN_LORESERVE)
+ isec = bfd_section_from_elf_index (input_bfd, isymp->st_shndx);
+ else if (isymp->st_shndx == SHN_ABS)
+ isec = bfd_abs_section_ptr;
+ else if (isymp->st_shndx == SHN_COMMON)
+ isec = bfd_com_section_ptr;
+ else
+ {
+ /* Who knows? */
+ isec = NULL;
+ }
+
+ *secpp = isec;
+ }
+
+ if (! mn10200_elf_relocate_section (output_bfd, link_info, input_bfd,
+ input_section, data, internal_relocs,
+ internal_syms, sections))
+ goto error_return;
+
+ if (sections != NULL)
+ free (sections);
+ sections = NULL;
+ if (internal_syms != NULL)
+ free (internal_syms);
+ internal_syms = NULL;
+ if (external_syms != NULL && symtab_hdr->contents == NULL)
+ free (external_syms);
+ external_syms = NULL;
+ if (internal_relocs != elf_section_data (input_section)->relocs)
+ free (internal_relocs);
+ internal_relocs = NULL;
+ }
+
+ return data;
+
+ error_return:
+ if (internal_relocs != NULL
+ && internal_relocs != elf_section_data (input_section)->relocs)
+ free (internal_relocs);
+ if (external_syms != NULL && symtab_hdr->contents == NULL)
+ free (external_syms);
+ if (internal_syms != NULL)
+ free (internal_syms);
+ if (sections != NULL)
+ free (sections);
+ return NULL;
+}
+
+
+#define TARGET_LITTLE_SYM bfd_elf32_mn10200_vec
+#define TARGET_LITTLE_NAME "elf32-mn10200"
+#define ELF_ARCH bfd_arch_mn10200
+#define ELF_MACHINE_CODE EM_CYGNUS_MN10200
+#define ELF_MAXPAGESIZE 0x1000
+
+#define elf_info_to_howto mn10200_info_to_howto
+#define elf_info_to_howto_rel 0
+#define elf_backend_relocate_section mn10200_elf_relocate_section
+#define bfd_elf32_bfd_relax_section mn10200_elf_relax_section
+#define bfd_elf32_bfd_get_relocated_section_contents \
+ mn10200_elf_get_relocated_section_contents
+
+#define elf_symbol_leading_char '_'
+
+#include "elf32-target.h"
+++ /dev/null
-/* Matsushita 10200 specific support for 32-bit ELF
- Copyright (C) 1996, 1997 Free Software Foundation, Inc.
-
-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. */
-
-#include "bfd.h"
-#include "sysdep.h"
-#include "libbfd.h"
-#include "elf-bfd.h"
-
-static reloc_howto_type *bfd_elf32_bfd_reloc_type_lookup
- PARAMS ((bfd *abfd, bfd_reloc_code_real_type code));
-static void mn10200_info_to_howto
- PARAMS ((bfd *, arelent *, Elf32_Internal_Rela *));
-static boolean mn10200_elf_relax_delete_bytes
- PARAMS ((bfd *, asection *, bfd_vma, int));
-static boolean mn10200_elf_symbol_address_p
- PARAMS ((bfd *, asection *, Elf32_External_Sym *, bfd_vma));
-
-/* We have to use RELA instructions since md_apply_fix3 in the assembler
- does absolutely nothing. */
-#define USE_RELA
-
-enum reloc_type
-{
- R_MN10200_NONE = 0,
- R_MN10200_32,
- R_MN10200_16,
- R_MN10200_8,
- R_MN10200_24,
- R_MN10200_PCREL8,
- R_MN10200_PCREL16,
- R_MN10200_PCREL24,
- R_MN10200_MAX
-};
-
-static reloc_howto_type elf_mn10200_howto_table[] =
-{
- /* Dummy relocation. Does nothing. */
- HOWTO (R_MN10200_NONE,
- 0,
- 2,
- 16,
- false,
- 0,
- complain_overflow_bitfield,
- bfd_elf_generic_reloc,
- "R_MN10200_NONE",
- false,
- 0,
- 0,
- false),
- /* Standard 32 bit reloc. */
- HOWTO (R_MN10200_32,
- 0,
- 2,
- 32,
- false,
- 0,
- complain_overflow_bitfield,
- bfd_elf_generic_reloc,
- "R_MN10200_32",
- false,
- 0xffffffff,
- 0xffffffff,
- false),
- /* Standard 16 bit reloc. */
- HOWTO (R_MN10200_16,
- 0,
- 1,
- 16,
- false,
- 0,
- complain_overflow_bitfield,
- bfd_elf_generic_reloc,
- "R_MN10200_16",
- false,
- 0xffff,
- 0xffff,
- false),
- /* Standard 8 bit reloc. */
- HOWTO (R_MN10200_8,
- 0,
- 0,
- 8,
- false,
- 0,
- complain_overflow_bitfield,
- bfd_elf_generic_reloc,
- "R_MN10200_8",
- false,
- 0xff,
- 0xff,
- false),
- /* Standard 24 bit reloc. */
- HOWTO (R_MN10200_24,
- 0,
- 2,
- 24,
- false,
- 0,
- complain_overflow_bitfield,
- bfd_elf_generic_reloc,
- "R_MN10200_24",
- false,
- 0xffffff,
- 0xffffff,
- false),
- /* Simple 8 pc-relative reloc. */
- HOWTO (R_MN10200_PCREL8,
- 0,
- 0,
- 8,
- true,
- 0,
- complain_overflow_bitfield,
- bfd_elf_generic_reloc,
- "R_MN10200_PCREL8",
- false,
- 0xff,
- 0xff,
- true),
- /* Simple 16 pc-relative reloc. */
- HOWTO (R_MN10200_PCREL16,
- 0,
- 1,
- 16,
- true,
- 0,
- complain_overflow_bitfield,
- bfd_elf_generic_reloc,
- "R_MN10200_PCREL16",
- false,
- 0xffff,
- 0xffff,
- true),
- /* Simple 32bit pc-relative reloc with a 1 byte adjustment
- to get the pc-relative offset correct. */
- HOWTO (R_MN10200_PCREL24,
- 0,
- 2,
- 24,
- true,
- 0,
- complain_overflow_bitfield,
- bfd_elf_generic_reloc,
- "R_MN10200_PCREL24",
- false,
- 0xffffff,
- 0xffffff,
- true),
-};
-
-struct mn10200_reloc_map
-{
- unsigned char bfd_reloc_val;
- unsigned char elf_reloc_val;
-};
-
-static const struct mn10200_reloc_map mn10200_reloc_map[] =
-{
- { BFD_RELOC_NONE, R_MN10200_NONE, },
- { BFD_RELOC_32, R_MN10200_32, },
- { BFD_RELOC_16, R_MN10200_16, },
- { BFD_RELOC_8, R_MN10200_8, },
- { BFD_RELOC_24, R_MN10200_24, },
- { BFD_RELOC_8_PCREL, R_MN10200_PCREL8, },
- { BFD_RELOC_16_PCREL, R_MN10200_PCREL16, },
- { BFD_RELOC_24_PCREL, R_MN10200_PCREL24, },
-};
-
-static reloc_howto_type *
-bfd_elf32_bfd_reloc_type_lookup (abfd, code)
- bfd *abfd;
- bfd_reloc_code_real_type code;
-{
- unsigned int i;
-
- for (i = 0;
- i < sizeof (mn10200_reloc_map) / sizeof (struct mn10200_reloc_map);
- i++)
- {
- if (mn10200_reloc_map[i].bfd_reloc_val == code)
- return &elf_mn10200_howto_table[mn10200_reloc_map[i].elf_reloc_val];
- }
-
- return NULL;
-}
-
-/* Set the howto pointer for an MN10200 ELF reloc. */
-
-static void
-mn10200_info_to_howto (abfd, cache_ptr, dst)
- bfd *abfd;
- arelent *cache_ptr;
- Elf32_Internal_Rela *dst;
-{
- unsigned int r_type;
-
- r_type = ELF32_R_TYPE (dst->r_info);
- BFD_ASSERT (r_type < (unsigned int) R_MN10200_MAX);
- cache_ptr->howto = &elf_mn10200_howto_table[r_type];
-}
-
-/* Perform a relocation as part of a final link. */
-static bfd_reloc_status_type
-mn10200_elf_final_link_relocate (howto, input_bfd, output_bfd,
- input_section, contents, offset, value,
- addend, info, sym_sec, is_local)
- reloc_howto_type *howto;
- bfd *input_bfd;
- bfd *output_bfd;
- asection *input_section;
- bfd_byte *contents;
- bfd_vma offset;
- bfd_vma value;
- bfd_vma addend;
- struct bfd_link_info *info;
- asection *sym_sec;
- int is_local;
-{
- unsigned long r_type = howto->type;
- bfd_byte *hit_data = contents + offset;
-
- switch (r_type)
- {
-
- case R_MN10200_NONE:
- return bfd_reloc_ok;
-
- case R_MN10200_32:
- value += addend;
- bfd_put_32 (input_bfd, value, hit_data);
- return bfd_reloc_ok;
-
- case R_MN10200_16:
- value += addend;
-
- if ((long)value > 0x7fff || (long)value < -0x8000)
- return bfd_reloc_overflow;
-
- bfd_put_16 (input_bfd, value, hit_data);
- return bfd_reloc_ok;
-
- case R_MN10200_8:
- value += addend;
-
- if ((long)value > 0x7fff || (long)value < -0x8000)
- return bfd_reloc_overflow;
-
- bfd_put_8 (input_bfd, value, hit_data);
- return bfd_reloc_ok;
-
- case R_MN10200_24:
- value += addend;
-
- if ((long)value > 0x7fffff || (long)value < -0x800000)
- return bfd_reloc_overflow;
-
- value &= 0xffffff;
- value |= (bfd_get_32 (input_bfd, hit_data) & 0xff000000);
- bfd_put_32 (input_bfd, value, hit_data);
- return bfd_reloc_ok;
-
- case R_MN10200_PCREL8:
- value -= (input_section->output_section->vma
- + input_section->output_offset);
- value -= offset;
- value += addend;
-
- if ((long)value > 0xff || (long)value < -0x100)
- return bfd_reloc_overflow;
-
- bfd_put_8 (input_bfd, value, hit_data);
- return bfd_reloc_ok;
-
- case R_MN10200_PCREL16:
- value -= (input_section->output_section->vma
- + input_section->output_offset);
- value -= offset;
- value += addend;
-
- if ((long)value > 0xffff || (long)value < -0x10000)
- return bfd_reloc_overflow;
-
- bfd_put_16 (input_bfd, value, hit_data);
- return bfd_reloc_ok;
-
- case R_MN10200_PCREL24:
- value -= (input_section->output_section->vma
- + input_section->output_offset);
- value -= offset;
- value += addend;
-
- if ((long)value > 0xffffff || (long)value < -0x1000000)
- return bfd_reloc_overflow;
-
- value &= 0xffffff;
- value |= (bfd_get_32 (input_bfd, hit_data) & 0xff000000);
- bfd_put_32 (input_bfd, value, hit_data);
- return bfd_reloc_ok;
-
- default:
- return bfd_reloc_notsupported;
- }
-}
-
-\f
-/* Relocate an MN10200 ELF section. */
-static boolean
-mn10200_elf_relocate_section (output_bfd, info, input_bfd, input_section,
- contents, relocs, local_syms, local_sections)
- 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;
-{
- Elf_Internal_Shdr *symtab_hdr;
- struct elf_link_hash_entry **sym_hashes;
- Elf_Internal_Rela *rel, *relend;
-
- symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
- sym_hashes = elf_sym_hashes (input_bfd);
-
- rel = relocs;
- relend = relocs + input_section->reloc_count;
- for (; rel < relend; rel++)
- {
- int r_type;
- reloc_howto_type *howto;
- unsigned long r_symndx;
- Elf_Internal_Sym *sym;
- asection *sec;
- struct elf_link_hash_entry *h;
- bfd_vma relocation;
- bfd_reloc_status_type r;
-
- r_symndx = ELF32_R_SYM (rel->r_info);
- r_type = ELF32_R_TYPE (rel->r_info);
- howto = elf_mn10200_howto_table + r_type;
-
- if (info->relocateable)
- {
- /* This is a relocateable link. We don't have to change
- anything, unless the reloc is against a section symbol,
- in which case we have to adjust according to where the
- section symbol winds up in the output section. */
- if (r_symndx < symtab_hdr->sh_info)
- {
- sym = local_syms + r_symndx;
- if (ELF_ST_TYPE (sym->st_info) == STT_SECTION)
- {
- sec = local_sections[r_symndx];
- rel->r_addend += sec->output_offset + sym->st_value;
- }
- }
-
- continue;
- }
-
- /* This is a final link. */
- h = NULL;
- sym = NULL;
- sec = NULL;
- if (r_symndx < symtab_hdr->sh_info)
- {
- sym = local_syms + r_symndx;
- sec = local_sections[r_symndx];
- relocation = (sec->output_section->vma
- + sec->output_offset
- + sym->st_value);
- }
- else
- {
- h = sym_hashes[r_symndx - symtab_hdr->sh_info];
- while (h->root.type == bfd_link_hash_indirect
- || h->root.type == bfd_link_hash_warning)
- h = (struct elf_link_hash_entry *) h->root.u.i.link;
- if (h->root.type == bfd_link_hash_defined
- || h->root.type == bfd_link_hash_defweak)
- {
- sec = h->root.u.def.section;
- relocation = (h->root.u.def.value
- + sec->output_section->vma
- + sec->output_offset);
- }
- else if (h->root.type == bfd_link_hash_undefweak)
- relocation = 0;
- else
- {
- if (! ((*info->callbacks->undefined_symbol)
- (info, h->root.root.string, input_bfd,
- input_section, rel->r_offset)))
- return false;
- relocation = 0;
- }
- }
-
- r = mn10200_elf_final_link_relocate (howto, input_bfd, output_bfd,
- input_section,
- contents, rel->r_offset,
- relocation, rel->r_addend,
- info, sec, h == NULL);
-
- if (r != bfd_reloc_ok)
- {
- const char *name;
- const char *msg = (const char *)0;
-
- if (h != NULL)
- name = h->root.root.string;
- else
- {
- name = (bfd_elf_string_from_elf_section
- (input_bfd, symtab_hdr->sh_link, sym->st_name));
- if (name == NULL || *name == '\0')
- name = bfd_section_name (input_bfd, sec);
- }
-
- switch (r)
- {
- case bfd_reloc_overflow:
- if (! ((*info->callbacks->reloc_overflow)
- (info, name, howto->name, (bfd_vma) 0,
- input_bfd, input_section, rel->r_offset)))
- return false;
- break;
-
- case bfd_reloc_undefined:
- if (! ((*info->callbacks->undefined_symbol)
- (info, name, input_bfd, input_section,
- rel->r_offset)))
- return false;
- break;
-
- case bfd_reloc_outofrange:
- msg = "internal error: out of range error";
- goto common_error;
-
- case bfd_reloc_notsupported:
- msg = "internal error: unsupported relocation error";
- goto common_error;
-
- case bfd_reloc_dangerous:
- msg = "internal error: dangerous error";
- goto common_error;
-
- default:
- msg = "internal error: unknown error";
- /* fall through */
-
- common_error:
- if (!((*info->callbacks->warning)
- (info, msg, name, input_bfd, input_section,
- rel->r_offset)))
- return false;
- break;
- }
- }
- }
-
- return true;
-}
-
-/* This function handles relaxing for the mn10200.
-
- There's quite a few relaxing opportunites available on the mn10200:
-
- * jsr:24 -> jsr:16 2 bytes
-
- * jmp:24 -> jmp:16 2 bytes
- * jmp:16 -> bra:8 1 byte
-
- * If the previous instruction is a conditional branch
- around the jump/bra, we may be able to reverse its condition
- and change its target to the jump's target. The jump/bra
- can then be deleted. 2 bytes
-
- * mov abs24 -> mov abs16 2 byte savings
-
- * Most instructions which accept imm24 can relax to imm16 2 bytes
- - Most instructions which accept imm16 can relax to imm8 1 byte
-
- * Most instructions which accept d24 can relax to d16 2 bytes
- - Most instructions which accept d16 can relax to d8 1 byte
-
- abs24, imm24, d24 all look the same at the reloc level. It
- might make the code simpler if we had different relocs for
- the various relaxable operand types.
-
- We don't handle imm16->imm8 or d16->d8 as they're very rare
- and somewhat more difficult to support. */
-
-static boolean
-mn10200_elf_relax_section (abfd, sec, link_info, again)
- bfd *abfd;
- asection *sec;
- struct bfd_link_info *link_info;
- boolean *again;
-{
- Elf_Internal_Shdr *symtab_hdr;
- Elf_Internal_Rela *internal_relocs;
- Elf_Internal_Rela *free_relocs = NULL;
- Elf_Internal_Rela *irel, *irelend;
- bfd_byte *contents = NULL;
- bfd_byte *free_contents = NULL;
- Elf32_External_Sym *extsyms = NULL;
- Elf32_External_Sym *free_extsyms = NULL;
-
- /* Assume nothing changes. */
- *again = false;
-
- /* We don't have to do anything for a relocateable link, if
- this section does not have relocs, or if this is not a
- code section. */
- if (link_info->relocateable
- || (sec->flags & SEC_RELOC) == 0
- || sec->reloc_count == 0
- || (sec->flags & SEC_CODE) == 0)
- return true;
-
- /* If this is the first time we have been called for this section,
- initialize the cooked size. */
- if (sec->_cooked_size == 0)
- sec->_cooked_size = sec->_raw_size;
-
- symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
-
- /* Get a copy of the native relocations. */
- internal_relocs = (_bfd_elf32_link_read_relocs
- (abfd, sec, (PTR) NULL, (Elf_Internal_Rela *) NULL,
- link_info->keep_memory));
- if (internal_relocs == NULL)
- goto error_return;
- if (! link_info->keep_memory)
- free_relocs = internal_relocs;
-
- /* Walk through them looking for relaxing opportunities. */
- irelend = internal_relocs + sec->reloc_count;
- for (irel = internal_relocs; irel < irelend; irel++)
- {
- bfd_vma symval;
-
- /* If this isn't something that can be relaxed, then ignore
- this reloc. */
- if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10200_NONE
- || ELF32_R_TYPE (irel->r_info) == (int) R_MN10200_8
- || ELF32_R_TYPE (irel->r_info) == (int) R_MN10200_MAX)
- continue;
-
- /* Get the section contents if we haven't done so already. */
- if (contents == NULL)
- {
- /* Get cached copy if it exists. */
- if (elf_section_data (sec)->this_hdr.contents != NULL)
- contents = elf_section_data (sec)->this_hdr.contents;
- else
- {
- /* Go get them off disk. */
- contents = (bfd_byte *) bfd_malloc (sec->_raw_size);
- if (contents == NULL)
- goto error_return;
- free_contents = contents;
-
- if (! bfd_get_section_contents (abfd, sec, contents,
- (file_ptr) 0, sec->_raw_size))
- goto error_return;
- }
- }
-
- /* Read the local symbols if we haven't done so already. */
- if (extsyms == NULL)
- {
- /* Get cached copy if it exists. */
- if (symtab_hdr->contents != NULL)
- extsyms = (Elf32_External_Sym *) symtab_hdr->contents;
- else
- {
- /* Go get them off disk. */
- extsyms = ((Elf32_External_Sym *)
- bfd_malloc (symtab_hdr->sh_info
- * sizeof (Elf32_External_Sym)));
- if (extsyms == NULL)
- goto error_return;
- free_extsyms = extsyms;
- if (bfd_seek (abfd, symtab_hdr->sh_offset, SEEK_SET) != 0
- || (bfd_read (extsyms, sizeof (Elf32_External_Sym),
- symtab_hdr->sh_info, abfd)
- != (symtab_hdr->sh_info * sizeof (Elf32_External_Sym))))
- goto error_return;
- }
- }
-
- /* Get the value of the symbol referred to by the reloc. */
- if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
- {
- Elf_Internal_Sym isym;
- asection *sym_sec;
-
- /* A local symbol. */
- bfd_elf32_swap_symbol_in (abfd,
- extsyms + ELF32_R_SYM (irel->r_info),
- &isym);
-
- sym_sec = bfd_section_from_elf_index (abfd, isym.st_shndx);
- symval = (isym.st_value
- + sym_sec->output_section->vma
- + sym_sec->output_offset);
- }
- else
- {
- unsigned long indx;
- struct elf_link_hash_entry *h;
-
- /* An external symbol. */
- indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
- h = elf_sym_hashes (abfd)[indx];
- BFD_ASSERT (h != NULL);
- if (h->root.type != bfd_link_hash_defined
- && h->root.type != bfd_link_hash_defweak)
- {
- /* This appears to be a reference to an undefined
- symbol. Just ignore it--it will be caught by the
- regular reloc processing. */
- continue;
- }
-
- symval = (h->root.u.def.value
- + h->root.u.def.section->output_section->vma
- + h->root.u.def.section->output_offset);
- }
-
- /* For simplicity of coding, we are going to modify the section
- contents, the section relocs, and the BFD symbol table. We
- must tell the rest of the code not to free up this
- information. It would be possible to instead create a table
- of changes which have to be made, as is done in coff-mips.c;
- that would be more work, but would require less memory when
- the linker is run. */
-
-
- /* Try to turn a 24bit pc-relative branch/call into a 16bit pc-relative
- branch/call. */
- if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10200_PCREL24)
- {
- bfd_vma value = symval;
-
- /* Deal with pc-relative gunk. */
- value -= (sec->output_section->vma + sec->output_offset);
- value -= irel->r_offset;
- value += irel->r_addend;
-
- /* See if the value will fit in 16 bits, note the high value is
- 0x7fff + 2 as the target will be two bytes closer if we are
- able to relax. */
- if ((long)value < 0x8001 && (long)value > -0x8000)
- {
- unsigned char code;
-
- /* Get the opcode. */
- code = bfd_get_8 (abfd, contents + irel->r_offset - 1);
-
- if (code != 0xe0 && code != 0xe1)
- continue;
-
- /* Note that we've changed the relocs, section contents, etc. */
- elf_section_data (sec)->relocs = internal_relocs;
- free_relocs = NULL;
-
- elf_section_data (sec)->this_hdr.contents = contents;
- free_contents = NULL;
-
- symtab_hdr->contents = (bfd_byte *) extsyms;
- free_extsyms = NULL;
-
- /* Fix the opcode. */
- if (code == 0xe0)
- bfd_put_8 (abfd, 0xfc, contents + irel->r_offset - 2);
- else if (code == 0xe1)
- bfd_put_8 (abfd, 0xfd, contents + irel->r_offset - 2);
-
- /* Fix the relocation's type. */
- irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
- R_MN10200_PCREL16);
-
- /* The opcode got shorter too, so we have to fix the
- addend and offset too! */
- irel->r_addend -= 1;
- irel->r_offset -= 1;
-
- /* Delete two bytes of data. */
- if (!mn10200_elf_relax_delete_bytes (abfd, sec,
- irel->r_offset + 1, 2))
- goto error_return;
-
- /* That will change things, so, we should relax again.
- Note that this is not required, and it may be slow. */
- *again = true;
- }
- }
-
- /* Try to turn a 16bit pc-relative branch into a 8bit pc-relative
- branch. */
- if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10200_PCREL16)
- {
- bfd_vma value = symval;
-
- /* Deal with pc-relative gunk. */
- value -= (sec->output_section->vma + sec->output_offset);
- value -= irel->r_offset;
- value += irel->r_addend;
-
- /* See if the value will fit in 8 bits, note the high value is
- 0x7f + 1 as the target will be one bytes closer if we are
- able to relax. */
- if ((long)value < 0x80 && (long)value > -0x80)
- {
- unsigned char code;
-
- /* Get the opcode. */
- code = bfd_get_8 (abfd, contents + irel->r_offset - 1);
-
- if (code != 0xfc)
- continue;
-
- /* Note that we've changed the relocs, section contents, etc. */
- elf_section_data (sec)->relocs = internal_relocs;
- free_relocs = NULL;
-
- elf_section_data (sec)->this_hdr.contents = contents;
- free_contents = NULL;
-
- symtab_hdr->contents = (bfd_byte *) extsyms;
- free_extsyms = NULL;
-
- /* Fix the opcode. */
- bfd_put_8 (abfd, 0xea, contents + irel->r_offset - 1);
-
- /* Fix the relocation's type. */
- irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
- R_MN10200_PCREL8);
-
- /* Delete one byte of data. */
- if (!mn10200_elf_relax_delete_bytes (abfd, sec,
- irel->r_offset + 1, 1))
- goto error_return;
-
- /* That will change things, so, we should relax again.
- Note that this is not required, and it may be slow. */
- *again = true;
- }
- }
-
- /* Try to eliminate an unconditional 8 bit pc-relative branch
- which immediately follows a conditional 8 bit pc-relative
- branch around the unconditional branch.
-
- original: new:
- bCC lab1 bCC' lab2
- bra lab2
- lab1: lab1:
-
-
- This happens when the bCC can't reach lab2 at assembly time,
- but due to other relaxations it can reach at link time. */
- if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10200_PCREL8)
- {
- Elf_Internal_Rela *nrel;
- bfd_vma value = symval;
- unsigned char code;
-
- /* Deal with pc-relative gunk. */
- value -= (sec->output_section->vma + sec->output_offset);
- value -= irel->r_offset;
- value += irel->r_addend;
-
- /* Do nothing if this reloc is the last byte in the section. */
- if (irel->r_offset == sec->_cooked_size)
- continue;
-
- /* See if the next instruction is an unconditional pc-relative
- branch, more often than not this test will fail, so we
- test it first to speed things up. */
- code = bfd_get_8 (abfd, contents + irel->r_offset + 1);
- if (code != 0xea)
- continue;
-
- /* Also make sure the next relocation applies to the next
- instruction and that it's a pc-relative 8 bit branch. */
- nrel = irel + 1;
- if (nrel == irelend
- || irel->r_offset + 2 != nrel->r_offset
- || ELF32_R_TYPE (nrel->r_info) != (int) R_MN10200_PCREL8)
- continue;
-
- /* Make sure our destination immediately follows the
- unconditional branch. */
- if (symval != (sec->output_section->vma + sec->output_offset
- + irel->r_offset + 3))
- continue;
-
- /* Now make sure we are a conditional branch. This may not
- be necessary, but why take the chance.
-
- Note these checks assume that R_MN10200_PCREL8 relocs
- only occur on bCC and bCCx insns. If they occured
- elsewhere, we'd need to know the start of this insn
- for this check to be accurate. */
- code = bfd_get_8 (abfd, contents + irel->r_offset - 1);
- if (code != 0xe0 && code != 0xe1 && code != 0xe2
- && code != 0xe3 && code != 0xe4 && code != 0xe5
- && code != 0xe6 && code != 0xe7 && code != 0xe8
- && code != 0xe9 && code != 0xec && code != 0xed
- && code != 0xee && code != 0xef && code != 0xfc
- && code != 0xfd && code != 0xfe && code != 0xff)
- continue;
-
- /* We also have to be sure there is no symbol/label
- at the unconditional branch. */
- if (mn10200_elf_symbol_address_p (abfd, sec, extsyms,
- irel->r_offset + 1))
- continue;
-
- /* Note that we've changed the relocs, section contents, etc. */
- elf_section_data (sec)->relocs = internal_relocs;
- free_relocs = NULL;
-
- elf_section_data (sec)->this_hdr.contents = contents;
- free_contents = NULL;
-
- symtab_hdr->contents = (bfd_byte *) extsyms;
- free_extsyms = NULL;
-
- /* Reverse the condition of the first branch. */
- switch (code)
- {
- case 0xfc:
- code = 0xfd;
- break;
- case 0xfd:
- code = 0xfc;
- break;
- case 0xfe:
- code = 0xff;
- break;
- case 0xff:
- code = 0xfe;
- break;
- case 0xe8:
- code = 0xe9;
- break;
- case 0xe9:
- code = 0xe8;
- break;
- case 0xe0:
- code = 0xe2;
- break;
- case 0xe2:
- code = 0xe0;
- break;
- case 0xe3:
- code = 0xe1;
- break;
- case 0xe1:
- code = 0xe3;
- break;
- case 0xe4:
- code = 0xe6;
- break;
- case 0xe6:
- code = 0xe4;
- break;
- case 0xe7:
- code = 0xe5;
- break;
- case 0xe5:
- code = 0xe7;
- break;
- case 0xec:
- code = 0xed;
- break;
- case 0xed:
- code = 0xec;
- break;
- case 0xee:
- code = 0xef;
- break;
- case 0xef:
- code = 0xee;
- break;
- }
- bfd_put_8 (abfd, code, contents + irel->r_offset - 1);
-
- /* Set the reloc type and symbol for the first branch
- from the second branch. */
- irel->r_info = nrel->r_info;
-
- /* Make the reloc for the second branch a null reloc. */
- nrel->r_info = ELF32_R_INFO (ELF32_R_SYM (nrel->r_info),
- R_MN10200_NONE);
-
- /* Delete two bytes of data. */
- if (!mn10200_elf_relax_delete_bytes (abfd, sec,
- irel->r_offset + 1, 2))
- goto error_return;
-
- /* That will change things, so, we should relax again.
- Note that this is not required, and it may be slow. */
- *again = true;
- }
-
- /* Try to turn a 24bit immediate, displacement or absolute address
- into a 16bit immediate, displacement or absolute address. */
- if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10200_24)
- {
- bfd_vma value = symval;
-
- /* See if the value will fit in 16 bits.
- We allow any 16bit match here. We prune those we can't
- handle below. */
- if ((long)value < 0x7fff && (long)value > -0x8000)
- {
- unsigned char code;
-
- /* All insns which have 24bit operands are 5 bytes long,
- the first byte will always be 0xf4, but we double check
- it just in case. */
-
- /* Get the first opcode. */
- code = bfd_get_8 (abfd, contents + irel->r_offset - 2);
-
- if (code != 0xf4)
- continue;
-
- /* Get the second opcode. */
- code = bfd_get_8 (abfd, contents + irel->r_offset - 1);
-
- switch (code & 0xfc)
- {
- /* mov imm24,dn -> mov imm16,dn */
- case 0x70:
- /* Not safe if the high bit is on as relaxing may
- move the value out of high mem and thus not fit
- in a signed 16bit value. */
- if (value & 0x8000)
- continue;
-
- /* Note that we've changed the reldection contents, etc. */
- elf_section_data (sec)->relocs = internal_relocs;
- free_relocs = NULL;
-
- elf_section_data (sec)->this_hdr.contents = contents;
- free_contents = NULL;
-
- symtab_hdr->contents = (bfd_byte *) extsyms;
- free_extsyms = NULL;
-
- /* Fix the opcode. */
- bfd_put_8 (abfd, 0xf8 + (code & 0x03),
- contents + irel->r_offset - 2);
-
- /* Fix the relocation's type. */
- irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
- R_MN10200_16);
-
- /* The opcode got shorter too, so we have to fix the
- addend and offset too! */
- irel->r_offset -= 1;
-
- /* Delete two bytes of data. */
- if (!mn10200_elf_relax_delete_bytes (abfd, sec,
- irel->r_offset + 1, 2))
- goto error_return;
-
- /* That will change things, so, we should relax again.
- Note that this is not required, and it may be slow. */
- *again = true;
- break;
-
- /* mov imm24,an -> mov imm16,an
- cmp imm24,an -> cmp imm16,an
- mov (abs24),dn -> mov (abs16),dn
- mov dn,(abs24) -> mov dn,(abs16)
- movb dn,(abs24) -> movb dn,(abs16)
- movbu (abs24),dn -> movbu (abs16),dn */
- case 0x74:
- case 0x7c:
- case 0xc0:
- case 0x40:
- case 0x44:
- case 0xc8:
- /* Note that we've changed the reldection contents, etc. */
- elf_section_data (sec)->relocs = internal_relocs;
- free_relocs = NULL;
-
- elf_section_data (sec)->this_hdr.contents = contents;
- free_contents = NULL;
-
- symtab_hdr->contents = (bfd_byte *) extsyms;
- free_extsyms = NULL;
-
- if ((code & 0xfc) == 0x74)
- code = 0xdc + (code & 0x03);
- else if ((code & 0xfc) == 0x7c)
- code = 0xec + (code & 0x03);
- else if ((code & 0xfc) == 0xc0)
- code = 0xc8 + (code & 0x03);
- else if ((code & 0xfc) == 0x40)
- code = 0xc0 + (code & 0x03);
- else if ((code & 0xfc) == 0x44)
- code = 0xc4 + (code & 0x03);
- else if ((code & 0xfc) == 0xc8)
- code = 0xcc + (code & 0x03);
-
- /* Fix the opcode. */
- bfd_put_8 (abfd, code, contents + irel->r_offset - 2);
-
- /* Fix the relocation's type. */
- irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
- R_MN10200_16);
-
- /* The opcode got shorter too, so we have to fix the
- addend and offset too! */
- irel->r_offset -= 1;
-
- /* Delete two bytes of data. */
- if (!mn10200_elf_relax_delete_bytes (abfd, sec,
- irel->r_offset + 1, 2))
- goto error_return;
-
- /* That will change things, so, we should relax again.
- Note that this is not required, and it may be slow. */
- *again = true;
- break;
-
- /* cmp imm24,dn -> cmp imm16,dn
- mov (abs24),an -> mov (abs16),an
- mov an,(abs24) -> mov an,(abs16)
- add imm24,dn -> add imm16,dn
- add imm24,an -> add imm16,an
- sub imm24,dn -> sub imm16,dn
- sub imm24,an -> sub imm16,an
- And all d24->d16 in memory ops. */
- case 0x78:
- case 0xd0:
- case 0x50:
- case 0x60:
- case 0x64:
- case 0x68:
- case 0x6c:
- case 0x80:
- case 0xf0:
- case 0x00:
- case 0x10:
- case 0xb0:
- case 0x30:
- case 0xa0:
- case 0x20:
- case 0x90:
- /* Not safe if the high bit is on as relaxing may
- move the value out of high mem and thus not fit
- in a signed 16bit value. */
- if (((code & 0xfc) == 0x78
- || (code & 0xfc) == 0x60
- || (code & 0xfc) == 0x64
- || (code & 0xfc) == 0x68
- || (code & 0xfc) == 0x6c
- || (code & 0xfc) == 0x80
- || (code & 0xfc) == 0xf0
- || (code & 0xfc) == 0x00
- || (code & 0xfc) == 0x10
- || (code & 0xfc) == 0xb0
- || (code & 0xfc) == 0x30
- || (code & 0xfc) == 0xa0
- || (code & 0xfc) == 0x20
- || (code & 0xfc) == 0x90)
- && (value & 0x8000) != 0)
- continue;
-
- /* Note that we've changed the reldection contents, etc. */
- elf_section_data (sec)->relocs = internal_relocs;
- free_relocs = NULL;
-
- elf_section_data (sec)->this_hdr.contents = contents;
- free_contents = NULL;
-
- symtab_hdr->contents = (bfd_byte *) extsyms;
- free_extsyms = NULL;
-
- /* Fix the opcode. */
- bfd_put_8 (abfd, 0xf7, contents + irel->r_offset - 2);
-
- if ((code & 0xfc) == 0x78)
- code = 0x48 + (code & 0x03);
- else if ((code & 0xfc) == 0xd0)
- code = 0x30 + (code & 0x03);
- else if ((code & 0xfc) == 0x50)
- code = 0x20 + (code & 0x03);
- else if ((code & 0xfc) == 0x60)
- code = 0x18 + (code & 0x03);
- else if ((code & 0xfc) == 0x64)
- code = 0x08 + (code & 0x03);
- else if ((code & 0xfc) == 0x68)
- code = 0x1c + (code & 0x03);
- else if ((code & 0xfc) == 0x6c)
- code = 0x0c + (code & 0x03);
- else if ((code & 0xfc) == 0x80)
- code = 0xc0 + (code & 0x07);
- else if ((code & 0xfc) == 0xf0)
- code = 0xb0 + (code & 0x07);
- else if ((code & 0xfc) == 0x00)
- code = 0x80 + (code & 0x07);
- else if ((code & 0xfc) == 0x10)
- code = 0xa0 + (code & 0x07);
- else if ((code & 0xfc) == 0xb0)
- code = 0x70 + (code & 0x07);
- else if ((code & 0xfc) == 0x30)
- code = 0x60 + (code & 0x07);
- else if ((code & 0xfc) == 0xa0)
- code = 0xd0 + (code & 0x07);
- else if ((code & 0xfc) == 0x20)
- code = 0x90 + (code & 0x07);
- else if ((code & 0xfc) == 0x90)
- code = 0x50 + (code & 0x07);
-
- bfd_put_8 (abfd, code, contents + irel->r_offset - 1);
-
- /* Fix the relocation's type. */
- irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
- R_MN10200_16);
-
- /* Delete one bytes of data. */
- if (!mn10200_elf_relax_delete_bytes (abfd, sec,
- irel->r_offset + 2, 1))
- goto error_return;
-
- /* That will change things, so, we should relax again.
- Note that this is not required, and it may be slow. */
- *again = true;
- break;
-
- /* movb (abs24),dn ->movbu (abs16),dn extxb bn */
- case 0xc4:
- /* Note that we've changed the reldection contents, etc. */
- elf_section_data (sec)->relocs = internal_relocs;
- free_relocs = NULL;
-
- elf_section_data (sec)->this_hdr.contents = contents;
- free_contents = NULL;
-
- symtab_hdr->contents = (bfd_byte *) extsyms;
- free_extsyms = NULL;
-
- bfd_put_8 (abfd, 0xcc + (code & 0x03),
- contents + irel->r_offset - 2);
-
- bfd_put_8 (abfd, 0xb8 + (code & 0x03),
- contents + irel->r_offset - 1);
-
- /* Fix the relocation's type. */
- irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
- R_MN10200_16);
-
- /* The reloc will be applied one byte in front of its
- current location. */
- irel->r_offset -= 1;
-
- /* Delete one bytes of data. */
- if (!mn10200_elf_relax_delete_bytes (abfd, sec,
- irel->r_offset + 2, 1))
- goto error_return;
-
- /* That will change things, so, we should relax again.
- Note that this is not required, and it may be slow. */
- *again = true;
- break;
- }
- }
- }
- }
-
- if (free_relocs != NULL)
- {
- free (free_relocs);
- free_relocs = NULL;
- }
-
- if (free_contents != NULL)
- {
- if (! link_info->keep_memory)
- free (free_contents);
- else
- {
- /* Cache the section contents for elf_link_input_bfd. */
- elf_section_data (sec)->this_hdr.contents = contents;
- }
- free_contents = NULL;
- }
-
- if (free_extsyms != NULL)
- {
- if (! link_info->keep_memory)
- free (free_extsyms);
- else
- {
- /* Cache the symbols for elf_link_input_bfd. */
- symtab_hdr->contents = extsyms;
- }
- free_extsyms = NULL;
- }
-
- return true;
-
- error_return:
- if (free_relocs != NULL)
- free (free_relocs);
- if (free_contents != NULL)
- free (free_contents);
- if (free_extsyms != NULL)
- free (free_extsyms);
- return false;
-}
-
-/* Delete some bytes from a section while relaxing. */
-
-static boolean
-mn10200_elf_relax_delete_bytes (abfd, sec, addr, count)
- bfd *abfd;
- asection *sec;
- bfd_vma addr;
- int count;
-{
- Elf_Internal_Shdr *symtab_hdr;
- Elf32_External_Sym *extsyms;
- int shndx;
- bfd_byte *contents;
- Elf_Internal_Rela *irel, *irelend;
- Elf_Internal_Rela *irelalign;
- bfd_vma toaddr;
- Elf32_External_Sym *esym, *esymend;
- struct elf_link_hash_entry **sym_hash, **sym_hash_end;
-
- symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
- extsyms = (Elf32_External_Sym *) symtab_hdr->contents;
-
- shndx = _bfd_elf_section_from_bfd_section (abfd, sec);
-
- contents = elf_section_data (sec)->this_hdr.contents;
-
- /* The deletion must stop at the next ALIGN reloc for an aligment
- power larger than the number of bytes we are deleting. */
-
- irelalign = NULL;
- toaddr = sec->_cooked_size;
-
- irel = elf_section_data (sec)->relocs;
- irelend = irel + sec->reloc_count;
-
- /* Actually delete the bytes. */
- memmove (contents + addr, contents + addr + count, toaddr - addr - count);
- sec->_cooked_size -= count;
-
- /* Adjust all the relocs. */
- for (irel = elf_section_data (sec)->relocs; irel < irelend; irel++)
- {
- /* Get the new reloc address. */
- if ((irel->r_offset > addr
- && irel->r_offset < toaddr))
- irel->r_offset -= count;
- }
-
- /* Adjust all the symbols. */
- esym = extsyms;
- esymend = esym + symtab_hdr->sh_info;
- for (; esym < esymend; esym++)
- {
- Elf_Internal_Sym isym;
-
- bfd_elf32_swap_symbol_in (abfd, esym, &isym);
-
- if (isym.st_shndx == shndx
- && isym.st_value > addr
- && isym.st_value < toaddr)
- {
- isym.st_value -= count;
- bfd_elf32_swap_symbol_out (abfd, &isym, esym);
- }
- }
-
- sym_hash = elf_sym_hashes (abfd);
- sym_hash_end = (sym_hash
- + (symtab_hdr->sh_size / sizeof (Elf32_External_Sym)
- - symtab_hdr->sh_info));
- for (; sym_hash < sym_hash_end; sym_hash++)
- {
- if (((*sym_hash)->root.type == bfd_link_hash_defined
- || (*sym_hash)->root.type == bfd_link_hash_defweak)
- && (*sym_hash)->root.u.def.section == sec
- && (*sym_hash)->root.u.def.value > addr
- && (*sym_hash)->root.u.def.value < toaddr)
- {
- (*sym_hash)->root.u.def.value -= count;
- }
- }
-
- return true;
-}
-
-/* Return true if a symbol exists at the given address, else return
- false. */
-static boolean
-mn10200_elf_symbol_address_p (abfd, sec, extsyms, addr)
- bfd *abfd;
- asection *sec;
- Elf32_External_Sym *extsyms;
- bfd_vma addr;
-{
- Elf_Internal_Shdr *symtab_hdr;
- int shndx;
- Elf32_External_Sym *esym, *esymend;
- struct elf_link_hash_entry **sym_hash, **sym_hash_end;
-
- symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
- shndx = _bfd_elf_section_from_bfd_section (abfd, sec);
-
- /* Examine all the symbols. */
- esym = extsyms;
- esymend = esym + symtab_hdr->sh_info;
- for (; esym < esymend; esym++)
- {
- Elf_Internal_Sym isym;
-
- bfd_elf32_swap_symbol_in (abfd, esym, &isym);
-
- if (isym.st_shndx == shndx
- && isym.st_value == addr)
- return true;
- }
-
- sym_hash = elf_sym_hashes (abfd);
- sym_hash_end = (sym_hash
- + (symtab_hdr->sh_size / sizeof (Elf32_External_Sym)
- - symtab_hdr->sh_info));
- for (; sym_hash < sym_hash_end; sym_hash++)
- {
- if (((*sym_hash)->root.type == bfd_link_hash_defined
- || (*sym_hash)->root.type == bfd_link_hash_defweak)
- && (*sym_hash)->root.u.def.section == sec
- && (*sym_hash)->root.u.def.value == addr)
- return true;
- }
- return false;
-}
-
-/* This is a version of bfd_generic_get_relocated_section_contents
- which uses mn10200_elf_relocate_section. */
-
-static bfd_byte *
-mn10200_elf_get_relocated_section_contents (output_bfd, link_info, link_order,
- data, relocateable, symbols)
- bfd *output_bfd;
- struct bfd_link_info *link_info;
- struct bfd_link_order *link_order;
- bfd_byte *data;
- boolean relocateable;
- asymbol **symbols;
-{
- Elf_Internal_Shdr *symtab_hdr;
- asection *input_section = link_order->u.indirect.section;
- bfd *input_bfd = input_section->owner;
- asection **sections = NULL;
- Elf_Internal_Rela *internal_relocs = NULL;
- Elf32_External_Sym *external_syms = NULL;
- Elf_Internal_Sym *internal_syms = NULL;
-
- /* We only need to handle the case of relaxing, or of having a
- particular set of section contents, specially. */
- if (relocateable
- || elf_section_data (input_section)->this_hdr.contents == NULL)
- return bfd_generic_get_relocated_section_contents (output_bfd, link_info,
- link_order, data,
- relocateable,
- symbols);
-
- symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
-
- memcpy (data, elf_section_data (input_section)->this_hdr.contents,
- input_section->_raw_size);
-
- if ((input_section->flags & SEC_RELOC) != 0
- && input_section->reloc_count > 0)
- {
- Elf_Internal_Sym *isymp;
- asection **secpp;
- Elf32_External_Sym *esym, *esymend;
-
- if (symtab_hdr->contents != NULL)
- external_syms = (Elf32_External_Sym *) symtab_hdr->contents;
- else
- {
- external_syms = ((Elf32_External_Sym *)
- bfd_malloc (symtab_hdr->sh_info
- * sizeof (Elf32_External_Sym)));
- if (external_syms == NULL && symtab_hdr->sh_info > 0)
- goto error_return;
- if (bfd_seek (input_bfd, symtab_hdr->sh_offset, SEEK_SET) != 0
- || (bfd_read (external_syms, sizeof (Elf32_External_Sym),
- symtab_hdr->sh_info, input_bfd)
- != (symtab_hdr->sh_info * sizeof (Elf32_External_Sym))))
- goto error_return;
- }
-
- internal_relocs = (_bfd_elf32_link_read_relocs
- (input_bfd, input_section, (PTR) NULL,
- (Elf_Internal_Rela *) NULL, false));
- if (internal_relocs == NULL)
- goto error_return;
-
- internal_syms = ((Elf_Internal_Sym *)
- bfd_malloc (symtab_hdr->sh_info
- * sizeof (Elf_Internal_Sym)));
- if (internal_syms == NULL && symtab_hdr->sh_info > 0)
- goto error_return;
-
- sections = (asection **) bfd_malloc (symtab_hdr->sh_info
- * sizeof (asection *));
- if (sections == NULL && symtab_hdr->sh_info > 0)
- goto error_return;
-
- isymp = internal_syms;
- secpp = sections;
- esym = external_syms;
- esymend = esym + symtab_hdr->sh_info;
- for (; esym < esymend; ++esym, ++isymp, ++secpp)
- {
- asection *isec;
-
- bfd_elf32_swap_symbol_in (input_bfd, esym, isymp);
-
- if (isymp->st_shndx == SHN_UNDEF)
- isec = bfd_und_section_ptr;
- else if (isymp->st_shndx > 0 && isymp->st_shndx < SHN_LORESERVE)
- isec = bfd_section_from_elf_index (input_bfd, isymp->st_shndx);
- else if (isymp->st_shndx == SHN_ABS)
- isec = bfd_abs_section_ptr;
- else if (isymp->st_shndx == SHN_COMMON)
- isec = bfd_com_section_ptr;
- else
- {
- /* Who knows? */
- isec = NULL;
- }
-
- *secpp = isec;
- }
-
- if (! mn10200_elf_relocate_section (output_bfd, link_info, input_bfd,
- input_section, data, internal_relocs,
- internal_syms, sections))
- goto error_return;
-
- if (sections != NULL)
- free (sections);
- sections = NULL;
- if (internal_syms != NULL)
- free (internal_syms);
- internal_syms = NULL;
- if (external_syms != NULL && symtab_hdr->contents == NULL)
- free (external_syms);
- external_syms = NULL;
- if (internal_relocs != elf_section_data (input_section)->relocs)
- free (internal_relocs);
- internal_relocs = NULL;
- }
-
- return data;
-
- error_return:
- if (internal_relocs != NULL
- && internal_relocs != elf_section_data (input_section)->relocs)
- free (internal_relocs);
- if (external_syms != NULL && symtab_hdr->contents == NULL)
- free (external_syms);
- if (internal_syms != NULL)
- free (internal_syms);
- if (sections != NULL)
- free (sections);
- return NULL;
-}
-
-
-#define TARGET_LITTLE_SYM bfd_elf32_mn10200_vec
-#define TARGET_LITTLE_NAME "elf32-mn10200"
-#define ELF_ARCH bfd_arch_mn10200
-#define ELF_MACHINE_CODE EM_CYGNUS_MN10200
-#define ELF_MAXPAGESIZE 0x1000
-
-#define elf_info_to_howto mn10200_info_to_howto
-#define elf_info_to_howto_rel 0
-#define elf_backend_relocate_section mn10200_elf_relocate_section
-#define bfd_elf32_bfd_relax_section mn10200_elf_relax_section
-#define bfd_elf32_bfd_get_relocated_section_contents \
- mn10200_elf_get_relocated_section_contents
-
-#define elf_symbol_leading_char '_'
-
-#include "elf32-target.h"
+++ /dev/null
-/* Matsushita 10300 specific support for 32-bit ELF
- Copyright (C) 1996, 1997 Free Software Foundation, Inc.
-
-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. */
-
-#include "bfd.h"
-#include "sysdep.h"
-#include "libbfd.h"
-#include "elf-bfd.h"
-
-static reloc_howto_type *bfd_elf32_bfd_reloc_type_lookup
- PARAMS ((bfd *abfd, bfd_reloc_code_real_type code));
-static void mn10300_info_to_howto
- PARAMS ((bfd *, arelent *, Elf32_Internal_Rela *));
-static bfd_reloc_status_type bfd_elf32_mn10300_reloc
- PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
-
-
-/* We have to use RELA instructions since md_apply_fix3 in the assembler
- does absolutely nothing. */
-#define USE_RELA
-
-enum reloc_type
-{
- R_MN10300_NONE = 0,
- R_MN10300_32,
- R_MN10300_16,
- R_MN10300_8,
- R_MN10300_PCREL32,
- R_MN10300_PCREL16,
- R_MN10300_PCREL8,
- R_MN10300_MAX
-};
-
-static reloc_howto_type elf_mn10300_howto_table[] =
-{
- /* Dummy relocation. Does nothing. */
- HOWTO (R_MN10300_NONE,
- 0,
- 2,
- 16,
- false,
- 0,
- complain_overflow_bitfield,
- bfd_elf_generic_reloc,
- "R_MN10300_NONE",
- false,
- 0,
- 0,
- false),
- /* Standard 32 bit reloc. */
- HOWTO (R_MN10300_32,
- 0,
- 2,
- 32,
- false,
- 0,
- complain_overflow_bitfield,
- bfd_elf_generic_reloc,
- "R_MN10300_32",
- false,
- 0xffffffff,
- 0xffffffff,
- false),
- /* Standard 16 bit reloc. */
- HOWTO (R_MN10300_16,
- 0,
- 1,
- 16,
- false,
- 0,
- complain_overflow_bitfield,
- bfd_elf_generic_reloc,
- "R_MN10300_16",
- false,
- 0xffff,
- 0xffff,
- false),
- /* Standard 8 bit reloc. */
- HOWTO (R_MN10300_8,
- 0,
- 0,
- 8,
- false,
- 0,
- complain_overflow_bitfield,
- bfd_elf_generic_reloc,
- "R_MN10300_8",
- false,
- 0xff,
- 0xff,
- false),
- /* Standard 32bit pc-relative reloc. */
- HOWTO (R_MN10300_PCREL32,
- 0,
- 2,
- 32,
- true,
- 0,
- complain_overflow_bitfield,
- bfd_elf_generic_reloc,
- "R_MN10300_PCREL32",
- false,
- 0xffffffff,
- 0xffffffff,
- true),
- /* Standard 16bit pc-relative reloc. */
- HOWTO (R_MN10300_PCREL16,
- 0,
- 1,
- 16,
- true,
- 0,
- complain_overflow_bitfield,
- bfd_elf_generic_reloc,
- "R_MN10300_PCREL16",
- false,
- 0xffff,
- 0xffff,
- true),
- /* Standard 8 pc-relative reloc. */
- HOWTO (R_MN10300_PCREL8,
- 0,
- 0,
- 8,
- true,
- 0,
- complain_overflow_bitfield,
- bfd_elf_generic_reloc,
- "R_MN10300_PCREL8",
- false,
- 0xff,
- 0xff,
- true),
-};
-
-struct mn10300_reloc_map
-{
- unsigned char bfd_reloc_val;
- unsigned char elf_reloc_val;
-};
-
-static const struct mn10300_reloc_map mn10300_reloc_map[] =
-{
- { BFD_RELOC_NONE, R_MN10300_NONE, },
- { BFD_RELOC_32, R_MN10300_32, },
- { BFD_RELOC_16, R_MN10300_16, },
- { BFD_RELOC_8, R_MN10300_8, },
- { BFD_RELOC_32_PCREL, R_MN10300_PCREL32, },
- { BFD_RELOC_16_PCREL, R_MN10300_PCREL16, },
- { BFD_RELOC_8_PCREL, R_MN10300_PCREL8, },
-};
-
-static reloc_howto_type *
-bfd_elf32_bfd_reloc_type_lookup (abfd, code)
- bfd *abfd;
- bfd_reloc_code_real_type code;
-{
- unsigned int i;
-
- for (i = 0;
- i < sizeof (mn10300_reloc_map) / sizeof (struct mn10300_reloc_map);
- i++)
- {
- if (mn10300_reloc_map[i].bfd_reloc_val == code)
- return &elf_mn10300_howto_table[mn10300_reloc_map[i].elf_reloc_val];
- }
-
- return NULL;
-}
-
-/* Set the howto pointer for an MN10300 ELF reloc. */
-
-static void
-mn10300_info_to_howto (abfd, cache_ptr, dst)
- bfd *abfd;
- arelent *cache_ptr;
- Elf32_Internal_Rela *dst;
-{
- unsigned int r_type;
-
- r_type = ELF32_R_TYPE (dst->r_info);
- BFD_ASSERT (r_type < (unsigned int) R_MN10300_MAX);
- cache_ptr->howto = &elf_mn10300_howto_table[r_type];
-}
-
-/* Perform a relocation as part of a final link. */
-static bfd_reloc_status_type
-mn10300_elf_final_link_relocate (howto, input_bfd, output_bfd,
- input_section, contents, offset, value,
- addend, info, sym_sec, is_local)
- reloc_howto_type *howto;
- bfd *input_bfd;
- bfd *output_bfd;
- asection *input_section;
- bfd_byte *contents;
- bfd_vma offset;
- bfd_vma value;
- bfd_vma addend;
- struct bfd_link_info *info;
- asection *sym_sec;
- int is_local;
-{
- unsigned long r_type = howto->type;
- bfd_byte *hit_data = contents + offset;
-
- switch (r_type)
- {
-
- case R_MN10300_NONE:
- return bfd_reloc_ok;
-
- case R_MN10300_32:
- value += addend;
- bfd_put_32 (input_bfd, value, hit_data);
- return bfd_reloc_ok;
-
- case R_MN10300_16:
- value += addend;
-
- if ((long)value > 0x7fff || (long)value < -0x8000)
- return bfd_reloc_overflow;
-
- bfd_put_16 (input_bfd, value, hit_data);
- return bfd_reloc_ok;
-
- case R_MN10300_8:
- value += addend;
-
- if ((long)value > 0x7fff || (long)value < -0x8000)
- return bfd_reloc_overflow;
-
- bfd_put_8 (input_bfd, value, hit_data);
- return bfd_reloc_ok;
-
- case R_MN10300_PCREL8:
- value -= (input_section->output_section->vma
- + input_section->output_offset);
- value -= offset;
- value += addend;
-
- if ((long)value > 0xff || (long)value < -0x100)
- return bfd_reloc_overflow;
-
- bfd_put_8 (input_bfd, value, hit_data);
- return bfd_reloc_ok;
-
- case R_MN10300_PCREL16:
- value -= (input_section->output_section->vma
- + input_section->output_offset);
- value -= offset;
- value += addend;
-
- if ((long)value > 0xffff || (long)value < -0x10000)
- return bfd_reloc_overflow;
-
- bfd_put_16 (input_bfd, value, hit_data);
- return bfd_reloc_ok;
-
- case R_MN10300_PCREL32:
- value -= (input_section->output_section->vma
- + input_section->output_offset);
- value -= offset;
- value += addend;
-
- bfd_put_32 (input_bfd, value, hit_data);
- return bfd_reloc_ok;
-
- default:
- return bfd_reloc_notsupported;
- }
-}
-
-\f
-/* Relocate an MN10300 ELF section. */
-static boolean
-mn10300_elf_relocate_section (output_bfd, info, input_bfd, input_section,
- contents, relocs, local_syms, local_sections)
- 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;
-{
- Elf_Internal_Shdr *symtab_hdr;
- struct elf_link_hash_entry **sym_hashes;
- Elf_Internal_Rela *rel, *relend;
-
- symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
- sym_hashes = elf_sym_hashes (input_bfd);
-
- rel = relocs;
- relend = relocs + input_section->reloc_count;
- for (; rel < relend; rel++)
- {
- int r_type;
- reloc_howto_type *howto;
- unsigned long r_symndx;
- Elf_Internal_Sym *sym;
- asection *sec;
- struct elf_link_hash_entry *h;
- bfd_vma relocation;
- bfd_reloc_status_type r;
-
- r_symndx = ELF32_R_SYM (rel->r_info);
- r_type = ELF32_R_TYPE (rel->r_info);
- howto = elf_mn10300_howto_table + r_type;
-
- if (info->relocateable)
- {
- /* This is a relocateable link. We don't have to change
- anything, unless the reloc is against a section symbol,
- in which case we have to adjust according to where the
- section symbol winds up in the output section. */
- if (r_symndx < symtab_hdr->sh_info)
- {
- sym = local_syms + r_symndx;
- if (ELF_ST_TYPE (sym->st_info) == STT_SECTION)
- {
- sec = local_sections[r_symndx];
- rel->r_addend += sec->output_offset + sym->st_value;
- }
- }
-
- continue;
- }
-
- /* This is a final link. */
- h = NULL;
- sym = NULL;
- sec = NULL;
- if (r_symndx < symtab_hdr->sh_info)
- {
- sym = local_syms + r_symndx;
- sec = local_sections[r_symndx];
- relocation = (sec->output_section->vma
- + sec->output_offset
- + sym->st_value);
- }
- else
- {
- h = sym_hashes[r_symndx - symtab_hdr->sh_info];
- while (h->root.type == bfd_link_hash_indirect
- || h->root.type == bfd_link_hash_warning)
- h = (struct elf_link_hash_entry *) h->root.u.i.link;
- if (h->root.type == bfd_link_hash_defined
- || h->root.type == bfd_link_hash_defweak)
- {
- sec = h->root.u.def.section;
- relocation = (h->root.u.def.value
- + sec->output_section->vma
- + sec->output_offset);
- }
- else if (h->root.type == bfd_link_hash_undefweak)
- relocation = 0;
- else
- {
- if (! ((*info->callbacks->undefined_symbol)
- (info, h->root.root.string, input_bfd,
- input_section, rel->r_offset)))
- return false;
- relocation = 0;
- }
- }
-
- r = mn10300_elf_final_link_relocate (howto, input_bfd, output_bfd,
- input_section,
- contents, rel->r_offset,
- relocation, rel->r_addend,
- info, sec, h == NULL);
-
- if (r != bfd_reloc_ok)
- {
- const char *name;
- const char *msg = (const char *)0;
-
- if (h != NULL)
- name = h->root.root.string;
- else
- {
- name = (bfd_elf_string_from_elf_section
- (input_bfd, symtab_hdr->sh_link, sym->st_name));
- if (name == NULL || *name == '\0')
- name = bfd_section_name (input_bfd, sec);
- }
-
- switch (r)
- {
- case bfd_reloc_overflow:
- if (! ((*info->callbacks->reloc_overflow)
- (info, name, howto->name, (bfd_vma) 0,
- input_bfd, input_section, rel->r_offset)))
- return false;
- break;
-
- case bfd_reloc_undefined:
- if (! ((*info->callbacks->undefined_symbol)
- (info, name, input_bfd, input_section,
- rel->r_offset)))
- return false;
- break;
-
- case bfd_reloc_outofrange:
- msg = "internal error: out of range error";
- goto common_error;
-
- case bfd_reloc_notsupported:
- msg = "internal error: unsupported relocation error";
- goto common_error;
-
- case bfd_reloc_dangerous:
- msg = "internal error: dangerous error";
- goto common_error;
-
- default:
- msg = "internal error: unknown error";
- /* fall through */
-
- common_error:
- if (!((*info->callbacks->warning)
- (info, msg, name, input_bfd, input_section,
- rel->r_offset)))
- return false;
- break;
- }
- }
- }
-
- return true;
-}
-
-#define TARGET_LITTLE_SYM bfd_elf32_mn10300_vec
-#define TARGET_LITTLE_NAME "elf32-mn10300"
-#define ELF_ARCH bfd_arch_mn10300
-#define ELF_MACHINE_CODE EM_CYGNUS_MN10300
-#define ELF_MAXPAGESIZE 0x1000
-
-#define elf_info_to_howto mn10300_info_to_howto
-#define elf_info_to_howto_rel 0
-#define elf_backend_relocate_section mn10300_elf_relocate_section
-
-#define elf_symbol_leading_char '_'
-
-#include "elf32-target.h"
projects / deliverable / binutils-gdb.git / commitdiff
