/* MIPS-specific support for 32-bit ELF
Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
- 2003, 2004, 2005 Free Software Foundation, Inc.
+ 2003, 2004, 2005, 2007 Free Software Foundation, Inc.
Most of the information added by Ian Lance Taylor, Cygnus Support,
<ian@cygnus.com>.
Traditional MIPS targets support added by Koundinya.K, Dansk Data
Elektronik & Operations Research Group. <kk@ddeorg.soft.net>
-This file is part of BFD, the Binary File Descriptor library.
+ 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 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 3 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.
+ 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., 51 Franklin Street - Fifth Floor, Boston,
+ MA 02110-1301, USA. */
-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., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */
/* This file handles MIPS ELF targets. SGI Irix 5 uses a slightly
different MIPS ELF from other targets. This matters when linking.
This file supports both, switching at runtime. */
-#include "bfd.h"
#include "sysdep.h"
+#include "bfd.h"
#include "libbfd.h"
#include "bfdlink.h"
#include "genlink.h"
(bfd *);
static bfd_boolean mips_elf_is_local_label_name
(bfd *, const char *);
-static bfd_reloc_status_type mips16_jump_reloc
- (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
static bfd_reloc_status_type mips16_gprel_reloc
(bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
static bfd_reloc_status_type mips_elf_final_gp
0x0000ffff, /* src_mask */
0x0000ffff, /* dst_mask */
FALSE), /* pcrel_offset */
+
+ /* 32 bit relocation with no addend. */
+ HOWTO (R_MIPS_GLOB_DAT, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 32, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ _bfd_mips_elf_generic_reloc, /* special_function */
+ "R_MIPS_GLOB_DAT", /* name */
+ FALSE, /* partial_inplace */
+ 0x0, /* src_mask */
+ 0xffffffff, /* dst_mask */
+ FALSE), /* pcrel_offset */
};
/* The reloc used for BFD_RELOC_CTOR when doing a 64 bit link. This
/* This needs complex overflow
detection, because the upper four
bits must match the PC. */
- mips16_jump_reloc, /* special_function */
+ _bfd_mips_elf_generic_reloc, /* special_function */
"R_MIPS16_26", /* name */
TRUE, /* partial_inplace */
0x3ffffff, /* src_mask */
return r;
}
-/* Handle a mips16 jump. */
-
-static bfd_reloc_status_type
-mips16_jump_reloc (bfd *abfd ATTRIBUTE_UNUSED, arelent *reloc_entry,
- asymbol *symbol, void *data ATTRIBUTE_UNUSED,
- asection *input_section, bfd *output_bfd,
- char **error_message ATTRIBUTE_UNUSED)
-{
- if (output_bfd != NULL
- && (symbol->flags & BSF_SECTION_SYM) == 0
- && reloc_entry->addend == 0)
- {
- reloc_entry->address += input_section->output_offset;
- return bfd_reloc_ok;
- }
-
- /* FIXME. */
- {
- static bfd_boolean warned;
-
- if (! warned)
- (*_bfd_error_handler)
- (_("Linking mips16 objects into %s format is not supported"),
- bfd_get_target (input_section->output_section->owner));
- warned = TRUE;
- }
-
- return bfd_reloc_undefined;
-}
-
/* Handle a mips16 GP relative reloc. */
static bfd_reloc_status_type
}
}
+static reloc_howto_type *
+bfd_elf32_bfd_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
+ const char *r_name)
+{
+ unsigned int i;
+
+ for (i = 0;
+ i < (sizeof (elf_mips_howto_table_rel)
+ / sizeof (elf_mips_howto_table_rel[0]));
+ i++)
+ if (elf_mips_howto_table_rel[i].name != NULL
+ && strcasecmp (elf_mips_howto_table_rel[i].name, r_name) == 0)
+ return &elf_mips_howto_table_rel[i];
+
+ for (i = 0;
+ i < (sizeof (elf_mips16_howto_table_rel)
+ / sizeof (elf_mips16_howto_table_rel[0]));
+ i++)
+ if (elf_mips16_howto_table_rel[i].name != NULL
+ && strcasecmp (elf_mips16_howto_table_rel[i].name, r_name) == 0)
+ return &elf_mips16_howto_table_rel[i];
+
+ if (strcasecmp (elf_mips_gnu_pcrel32.name, r_name) == 0)
+ return &elf_mips_gnu_pcrel32;
+ if (strcasecmp (elf_mips_gnu_rel16_s2.name, r_name) == 0)
+ return &elf_mips_gnu_rel16_s2;
+ if (strcasecmp (elf_mips_gnu_vtinherit_howto.name, r_name) == 0)
+ return &elf_mips_gnu_vtinherit_howto;
+ if (strcasecmp (elf_mips_gnu_vtentry_howto.name, r_name) == 0)
+ return &elf_mips_gnu_vtentry_howto;
+
+ return NULL;
+}
+
/* Given a MIPS Elf_Internal_Rel, fill in an arelent structure. */
static reloc_howto_type *
#define elf_backend_create_dynamic_sections \
_bfd_mips_elf_create_dynamic_sections
#define elf_backend_check_relocs _bfd_mips_elf_check_relocs
+#define elf_backend_merge_symbol_attribute \
+ _bfd_mips_elf_merge_symbol_attribute
+#define elf_backend_get_target_dtag _bfd_mips_elf_get_target_dtag
#define elf_backend_adjust_dynamic_symbol \
_bfd_mips_elf_adjust_dynamic_symbol
#define elf_backend_always_size_sections \
_bfd_mips_elf_always_size_sections
#define elf_backend_size_dynamic_sections \
_bfd_mips_elf_size_dynamic_sections
+#define elf_backend_init_index_section _bfd_elf_init_1_index_section
#define elf_backend_relocate_section _bfd_mips_elf_relocate_section
#define elf_backend_finish_dynamic_symbol \
_bfd_mips_elf_finish_dynamic_symbol
#undef TARGET_BIG_NAME
#undef ELF_MAXPAGESIZE
+#undef ELF_COMMONPAGESIZE
#define TARGET_LITTLE_SYM bfd_elf32_tradlittlemips_vec
#define TARGET_LITTLE_NAME "elf32-tradlittlemips"
#define TARGET_BIG_SYM bfd_elf32_tradbigmips_vec
#define TARGET_BIG_NAME "elf32-tradbigmips"
-/* The SVR4 MIPS ABI says that this should be 0x10000, and Linux uses
- page sizes of up to that limit, so we need to respect it. */
+/* The MIPS ABI says at Page 5-1:
+ Virtual addresses and file offsets for MIPS segments are congruent
+ modulo 64 KByte (0x10000) or larger powers of 2. Because 64 KBytes
+ is the maximum page size, the files are suitable for paging
+ regardless of physical page size. */
#define ELF_MAXPAGESIZE 0x10000
+#define ELF_COMMONPAGESIZE 0x1000
#define elf32_bed elf32_tradbed
/* Include the target file again for this target. */
}
}
+static reloc_howto_type *
+mips_vxworks_bfd_reloc_name_lookup (bfd *abfd, const char *r_name)
+{
+ if (strcasecmp (mips_vxworks_copy_howto_rela.name, r_name) == 0)
+ return &mips_vxworks_copy_howto_rela;
+ if (strcasecmp (mips_vxworks_jump_slot_howto_rela.name, r_name) == 0)
+ return &mips_vxworks_jump_slot_howto_rela;
+
+ return bfd_elf32_bfd_reloc_name_lookup (abfd, r_name);
+}
+
/* Implement elf_backend_mips_rtype_to_lookup for VxWorks. */
static reloc_howto_type *
#undef TARGET_BIG_SYM
#undef TARGET_BIG_NAME
+#undef ELF_MAXPAGESIZE
+#undef ELF_COMMONPAGESIZE
+
#define TARGET_LITTLE_SYM bfd_elf32_littlemips_vxworks_vec
#define TARGET_LITTLE_NAME "elf32-littlemips-vxworks"
#define TARGET_BIG_SYM bfd_elf32_bigmips_vxworks_vec
#undef elf32_bed
#define elf32_bed elf32_mips_vxworks_bed
-#undef ELF_MAXPAGESIZE
#define ELF_MAXPAGESIZE 0x1000
+#define ELF_COMMONPAGESIZE 0x1000
#undef elf_backend_want_got_plt
#define elf_backend_want_got_plt 1
#undef bfd_elf32_bfd_reloc_type_lookup
#define bfd_elf32_bfd_reloc_type_lookup \
mips_vxworks_bfd_reloc_type_lookup
+#undef bfd_elf32_bfd_reloc_name_lookup
+#define bfd_elf32_bfd_reloc_name_lookup \
+ mips_vxworks_bfd_reloc_name_lookup
#undef elf_backend_mips_rtype_to_howto
#define elf_backend_mips_rtype_to_howto \
mips_vxworks_rtype_to_howto
projects / platform / upstream / binutils.git / blobdiff