/* M16C/M32C specific support for 32-bit ELF.
- Copyright (C) 2005, 2006
+ Copyright (C) 2005, 2006, 2007
Free Software Foundation, Inc.
This file is part of BFD, the Binary File Descriptor library.
(bfd *, arelent *, Elf_Internal_Rela *);
static bfd_boolean m32c_elf_relocate_section
(bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *, Elf_Internal_Rela *, Elf_Internal_Sym *, asection **);
-static bfd_boolean m32c_elf_gc_sweep_hook
- (bfd *, struct bfd_link_info *, asection *, const Elf_Internal_Rela *);
-static asection * m32c_elf_gc_mark_hook
- (asection *, struct bfd_link_info *, Elf_Internal_Rela *, struct elf_link_hash_entry *, Elf_Internal_Sym *);
static bfd_boolean m32c_elf_check_relocs
(bfd *, struct bfd_link_info *, asection *, const Elf_Internal_Rela *);
static bfd_boolean m32c_elf_relax_delete_bytes (bfd *, asection *, bfd_vma, int);
#ifdef DEBUG
-static char * m32c_get_reloc (long reloc);
+char * m32c_get_reloc (long reloc);
+void dump_symtab (bfd *, void *, void *);
#endif
static bfd_boolean m32c_elf_relax_section
(bfd *abfd, asection *sec, struct bfd_link_info *link_info, bfd_boolean *again);
0, /* dst_mask */
FALSE), /* pcrel_offset */
+ /* GCC intentionally overflows these next two in order to work
+ around limitations in the addressing modes, so don't complain
+ about overflow. */
HOWTO (R_M32C_16, /* type */
0, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
- complain_overflow_bitfield, /* complain_on_overflow */
+ complain_overflow_dont, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_M32C_16", /* name */
FALSE, /* partial_inplace */
24, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
- complain_overflow_bitfield, /* complain_on_overflow */
+ complain_overflow_dont, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_M32C_24", /* name */
FALSE, /* partial_inplace */
return NULL;
}
+static reloc_howto_type *
+m32c_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, const char *r_name)
+{
+ unsigned int i;
+
+ for (i = 0;
+ i < sizeof (m32c_elf_howto_table) / sizeof (m32c_elf_howto_table[0]);
+ i++)
+ if (m32c_elf_howto_table[i].name != NULL
+ && strcasecmp (m32c_elf_howto_table[i].name, r_name) == 0)
+ return &m32c_elf_howto_table[i];
+
+ return NULL;
+}
+
/* Set the howto pointer for an M32C ELF reloc. */
static void
r_symndx = ELF32_R_SYM (rel->r_info);
- if (info->relocatable)
- {
- /* This is a relocatable 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. */
howto = m32c_elf_howto_table + ELF32_R_TYPE (rel->r_info);
h = NULL;
sym = NULL;
sec = NULL;
+ relocation = 0;
if (r_symndx < symtab_hdr->sh_info)
{
+ sec->output_offset);
}
else if (h->root.type == bfd_link_hash_undefweak)
- {
- relocation = 0;
- }
- else
+ ;
+ else if (!info->relocatable)
{
if (! ((*info->callbacks->undefined_symbol)
(info, h->root.root.string, input_bfd,
input_section, rel->r_offset, TRUE)))
return FALSE;
- relocation = 0;
}
}
+ if (sec != NULL && elf_discarded_section (sec))
+ {
+ /* For relocs against symbols from removed linkonce sections,
+ or sections discarded by a linker script, we just want the
+ section contents zeroed. Avoid any special processing. */
+ _bfd_clear_contents (howto, input_bfd, contents + rel->r_offset);
+ rel->r_info = 0;
+ rel->r_addend = 0;
+ continue;
+ }
+
+ if (info->relocatable)
+ {
+ /* This is a relocatable 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 (sym != NULL && ELF_ST_TYPE (sym->st_info) == STT_SECTION)
+ rel->r_addend += sec->output_offset;
+ continue;
+ }
+
switch (ELF32_R_TYPE (rel->r_info))
{
case R_M32C_16:
return TRUE;
}
\f
-/* Return the section that should be marked against GC for a given
- relocation. */
-
-static asection *
-m32c_elf_gc_mark_hook
- (asection * sec,
- struct bfd_link_info * info ATTRIBUTE_UNUSED,
- Elf_Internal_Rela * rel,
- struct elf_link_hash_entry * h,
- Elf_Internal_Sym * sym)
-{
- if (h != NULL)
- {
- switch (ELF32_R_TYPE (rel->r_info))
- {
- default:
- switch (h->root.type)
- {
- case bfd_link_hash_defined:
- case bfd_link_hash_defweak:
- return h->root.u.def.section;
-
- case bfd_link_hash_common:
- return h->root.u.c.p->section;
-
- default:
- break;
- }
- }
- }
- else
- {
- if (!(elf_bad_symtab (sec->owner)
- && ELF_ST_BIND (sym->st_info) != STB_LOCAL)
- && ! ((sym->st_shndx <= 0 || sym->st_shndx >= SHN_LORESERVE)
- && sym->st_shndx != SHN_COMMON))
- {
- return bfd_section_from_elf_index (sec->owner, sym->st_shndx);
- }
- }
-
- return NULL;
-}
-
-/* Update the got entry reference counts for the section being removed. */
-
-static bfd_boolean
-m32c_elf_gc_sweep_hook
- (bfd * abfd ATTRIBUTE_UNUSED,
- struct bfd_link_info * info ATTRIBUTE_UNUSED,
- asection * sec ATTRIBUTE_UNUSED,
- const Elf_Internal_Rela * relocs ATTRIBUTE_UNUSED)
-{
- return TRUE;
-}
-
/* We support 16-bit pointers to code above 64k by generating a thunk
below 64k containing a JMP instruction to the final address. */
splt = bfd_get_section_by_name (dynobj, ".plt");
if (splt == NULL)
{
- splt = bfd_make_section (dynobj, ".plt");
+ flagword flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
+ | SEC_IN_MEMORY | SEC_LINKER_CREATED
+ | SEC_READONLY | SEC_CODE);
+ splt = bfd_make_section_with_flags (dynobj, ".plt", flags);
if (splt == NULL
- || ! bfd_set_section_flags (dynobj, splt,
- (SEC_ALLOC
- | SEC_LOAD
- | SEC_HAS_CONTENTS
- | SEC_IN_MEMORY
- | SEC_LINKER_CREATED
- | SEC_READONLY
- | SEC_CODE))
|| ! bfd_set_section_alignment (dynobj, splt, 1))
return FALSE;
}
\f
#ifdef DEBUG
-static void
+void
dump_symtab (bfd * abfd, void *internal_syms, void *external_syms)
{
size_t locsymcount;
{
case STT_FUNC: st_info_str = "STT_FUNC";
case STT_SECTION: st_info_str = "STT_SECTION";
- case STT_SRELC: st_info_str = "STT_SRELC";
case STT_FILE: st_info_str = "STT_FILE";
case STT_OBJECT: st_info_str = "STT_OBJECT";
case STT_TLS: st_info_str = "STT_TLS";
free (external_syms);
}
-static char *
+char *
m32c_get_reloc (long reloc)
{
if (0 <= reloc && reloc < R_M32C_max)
#define elf_info_to_howto m32c_info_to_howto_rela
#define elf_backend_object_p m32c_elf_object_p
#define elf_backend_relocate_section m32c_elf_relocate_section
-#define elf_backend_gc_mark_hook m32c_elf_gc_mark_hook
-#define elf_backend_gc_sweep_hook m32c_elf_gc_sweep_hook
#define elf_backend_check_relocs m32c_elf_check_relocs
#define elf_backend_object_p m32c_elf_object_p
#define elf_symbol_leading_char ('_')
#define elf_backend_can_gc_sections 1
#define bfd_elf32_bfd_reloc_type_lookup m32c_reloc_type_lookup
+#define bfd_elf32_bfd_reloc_name_lookup m32c_reloc_name_lookup
#define bfd_elf32_bfd_relax_section m32c_elf_relax_section
#define bfd_elf32_bfd_set_private_flags m32c_elf_set_private_flags
#define bfd_elf32_bfd_merge_private_bfd_data m32c_elf_merge_private_bfd_data
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