--- /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 boolean mn10300_elf_relax_delete_bytes
+ PARAMS ((bfd *, asection *, bfd_vma, int));
+static boolean mn10300_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_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;
+}
+
+/* This function handles relaxing for the mn10300.
+
+ There's quite a few relaxing opportunites available on the mn10300:
+
+ * calls:32 -> calls:16 2 bytes
+ - call:32 -> call: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
+
+ XXX These are mn10200 relaxing things
+ * 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
+mn10300_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_MN10300_NONE
+ || ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_8
+ || ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_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 32bit pc-relative branch/call into a 16bit pc-relative
+ branch/call. */
+ if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_PCREL32)
+ {
+ 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 != 0xdc && code != 0xff)
+ 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 == 0xdc)
+ bfd_put_8 (abfd, 0xcc, contents + irel->r_offset - 1);
+ else if (code == 0xff)
+ bfd_put_8 (abfd, 0xfa, contents + irel->r_offset - 2);
+
+ /* Fix the relocation's type. */
+ irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
+ R_MN10300_PCREL16);
+
+ /* Delete two bytes of data. */
+ if (!mn10300_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_MN10300_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 != 0xcc)
+ 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, 0xca, contents + irel->r_offset - 1);
+
+ /* Fix the relocation's type. */
+ irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
+ R_MN10300_PCREL8);
+
+ /* Delete one byte of data. */
+ if (!mn10300_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_MN10300_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 != 0xca)
+ 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_MN10300_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_MN10300_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 != 0xc0 && code != 0xc1 && code != 0xc2
+ && code != 0xc3 && code != 0xc4 && code != 0xc5
+ && code != 0xc6 && code != 0xc7 && code != 0xc8
+ && code != 0xc9 && code != 0xe8 && code != 0xe9
+ && code != 0xea && code != 0xeb)
+ continue;
+
+ /* We also have to be sure there is no symbol/label
+ at the unconditional branch. */
+ if (mn10300_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 0xc8:
+ code = 0xc9;
+ break;
+ case 0xc9:
+ code = 0xc8;
+ break;
+ case 0xc0:
+ code = 0xc2;
+ break;
+ case 0xc2:
+ code = 0xc0;
+ break;
+ case 0xc3:
+ code = 0xc1;
+ break;
+ case 0xc1:
+ code = 0xc3;
+ break;
+ case 0xc4:
+ code = 0xc6;
+ break;
+ case 0xc6:
+ code = 0xc4;
+ break;
+ case 0xc7:
+ code = 0xc5;
+ break;
+ case 0xc5:
+ code = 0xc7;
+ break;
+ case 0xe8:
+ code = 0xe9;
+ break;
+ case 0x9d:
+ code = 0xe8;
+ break;
+ case 0xea:
+ code = 0xeb;
+ break;
+ case 0xeb:
+ code = 0xea;
+ 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_MN10300_NONE);
+
+ /* Delete two bytes of data. */
+ if (!mn10300_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 32bit immediate, displacement or absolute address
+ into a 16bit immediate, displacement or absolute address. */
+ if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_32)
+ {
+ 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;
+
+ /* Most insns which have 32bit operands are 6 bytes long;
+ exceptions are pcrel insns and bit insns.
+
+ We handle pcrel insns above. We don't bother trying
+ to handle the bit insns here.
+
+ The first byte of the remaining insns will be 0xfc. */
+
+ /* Get the first opcode. */
+ code = bfd_get_8 (abfd, contents + irel->r_offset - 2);
+
+ if (code != 0xfc)
+ continue;
+
+ /* Get the second opcode. */
+ code = bfd_get_8 (abfd, contents + irel->r_offset - 1);
+
+ if ((code & 0xf0) < 0x80)
+ switch (code & 0xf0)
+ {
+ /* mov (d32,am),dn -> mov (d32,am),dn
+ mov dm,(d32,am) -> mov dn,(d32,am)
+ mov (d32,am),an -> mov (d32,am),an
+ mov dm,(d32,am) -> mov dn,(d32,am)
+ movbu (d32,am),dn -> movbu (d32,am),dn
+ movbu dm,(d32,am) -> movbu dn,(d32,am)
+ movhu (d32,am),dn -> movhu (d32,am),dn
+ movhu dm,(d32,am) -> movhu dn,(d32,am) */
+ case 0x00:
+ case 0x10:
+ case 0x20:
+ case 0x30:
+ case 0x40:
+ case 0x50:
+ case 0x60:
+ 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 (code == 0xcc
+ && (value & 0x8000))
+ continue;
+
+ /* Note that we've changed the relocation 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, 0xfa, contents + irel->r_offset - 2);
+ 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_MN10300_16);
+
+ /* Delete two bytes of data. */
+ if (!mn10300_elf_relax_delete_bytes (abfd, sec,
+ irel->r_offset + 2, 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;
+ }
+ else if ((code & 0xf0) == 0x80
+ || (code & 0xf0) == 0x90)
+ switch (code & 0xf3)
+ {
+ /* mov dn,(abs32) -> mov dn,(abs16)
+ movbu dn,(abs32) -> movbu dn,(abs16)
+ movhu dn,(abs32) -> movhu dn,(abs16) */
+ case 0x81:
+ case 0x82:
+ case 0x83:
+ /* Note that we've changed the relocation 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 & 0xf3) == 0x81)
+ code = 0x01 + (code & 0x0c);
+ else if ((code & 0xf3) == 0x82)
+ code = 0x02 + (code & 0x0c);
+ else if ((code & 0xf3) == 0x83)
+ code = 0x03 + (code & 0x0c);
+ else
+ abort ();
+
+ /* 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_MN10300_16);
+
+ /* The opcode got shorter too, so we have to fix the
+ addend and offset too! */
+ irel->r_offset -= 1;
+
+ /* Delete three bytes of data. */
+ if (!mn10300_elf_relax_delete_bytes (abfd, sec,
+ irel->r_offset + 1, 3))
+ 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 am,(abs32) -> mov am,(abs16)
+ mov am,(d32,sp) -> mov am,(d16,sp)
+ mov dm,(d32,sp) -> mov dm,(d32,sp)
+ movbu dm,(d32,sp) -> movbu dm,(d32,sp)
+ movhu dm,(d32,sp) -> movhu dm,(d32,sp) */
+ case 0x80:
+ case 0x90:
+ case 0x91:
+ case 0x92:
+ case 0x93:
+ /* Note that we've changed the relocation 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, 0xfa, contents + irel->r_offset - 2);
+ 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_MN10300_16);
+
+ /* Delete two bytes of data. */
+ if (!mn10300_elf_relax_delete_bytes (abfd, sec,
+ irel->r_offset + 2, 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;
+ }
+ else if ((code & 0xf0) < 0xf0)
+ switch (code & 0xfc)
+ {
+ /* mov imm32,dn -> mov imm16,dn
+ mov imm32,an -> mov imm16,an
+ mov (abs32),dn -> mov (abs16),dn
+ movbu (abs32),dn -> movbu (abs16),dn
+ movhu (abs32),dn -> movhu (abs16),dn */
+ case 0xcc:
+ case 0xdc:
+ case 0xa4:
+ case 0xa8:
+ case 0xac:
+ /* 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 == 0xcc
+ && (value & 0x8000))
+ continue;
+
+ /* Note that we've changed the relocation 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) == 0xcc)
+ code = 0x2c + (code & 0x03);
+ else if ((code & 0xfc) == 0xdc)
+ code = 0x24 + (code & 0x03);
+ else if ((code & 0xfc) == 0xa4)
+ code = 0x30 + (code & 0x03);
+ else if ((code & 0xfc) == 0xa8)
+ code = 0x34 + (code & 0x03);
+ else if ((code & 0xfc) == 0xac)
+ code = 0x38 + (code & 0x03);
+ else
+ abort ();
+
+ /* 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_MN10300_16);
+
+ /* The opcode got shorter too, so we have to fix the
+ addend and offset too! */
+ irel->r_offset -= 1;
+
+ /* Delete three bytes of data. */
+ if (!mn10300_elf_relax_delete_bytes (abfd, sec,
+ irel->r_offset + 1, 3))
+ 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 (abs32),an -> mov (abs16),an
+ mov (d32,sp),an -> mov (d32,sp),an
+ mov (d32,sp),dn -> mov (d32,sp),dn
+ movbu (d32,sp),dn -> movbu (d32,sp),dn
+ movhu (d32,sp),dn -> movhu (d32,sp),dn
+ add imm32,dn -> add imm16,dn
+ cmp imm32,dn -> cmp imm16,dn
+ add imm32,an -> add imm16,an
+ cmp imm32,an -> cmp imm16,an
+ and imm32,dn -> and imm32,dn
+ or imm32,dn -> or imm32,dn
+ xor imm32,dn -> xor imm32,dn
+ btst imm32,dn -> btst imm32,dn */
+
+ case 0xa0:
+ case 0xb0:
+ case 0xb1:
+ case 0xb2:
+ case 0xb3:
+ case 0xc0:
+ case 0xc8:
+
+ case 0xd0:
+#if 1
+ case 0xd8:
+#endif
+ case 0xe0:
+ case 0xe1:
+ case 0xe2:
+ case 0xe3:
+ /* Note that we've changed the relocation 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, 0xfa, contents + irel->r_offset - 2);
+ 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_MN10300_16);
+
+ /* Delete two bytes of data. */
+ if (!mn10300_elf_relax_delete_bytes (abfd, sec,
+ irel->r_offset + 2, 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;
+ }
+ else if (code == 0xfe)
+ {
+ /* add imm32,sp -> add imm16,sp */
+
+ /* Note that we've changed the relocation 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, 0xfa, contents + irel->r_offset - 2);
+ bfd_put_8 (abfd, 0xfe, contents + irel->r_offset - 1);
+
+ /* Fix the relocation's type. */
+ irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
+ R_MN10300_16);
+
+ /* Delete two bytes of data. */
+ if (!mn10300_elf_relax_delete_bytes (abfd, sec,
+ irel->r_offset + 2, 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;
+ }
+ }
+ }
+ }
+
+ 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
+mn10300_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
+mn10300_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 mn10300_elf_relocate_section. */
+
+static bfd_byte *
+mn10300_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 (! mn10300_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_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 bfd_elf32_bfd_relax_section mn10300_elf_relax_section
+#define bfd_elf32_bfd_get_relocated_section_contents \
+ mn10300_elf_get_relocated_section_contents
+
+#define elf_symbol_leading_char '_'
+
+#include "elf32-target.h"
projects / thirdparty / binutils-gdb.git / commitdiff
