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Add GC support.

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This commit is contained in:
Nick Clifton
1999-02-01 20:23:31 +00:00
parent 6712be04be
commit 7f7cef942c
2 changed files with 80 additions and 2 deletions
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6
bfd/ChangeLog
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@ -1,3 +1,9 @@
1999-02-01 Nick Clifton <nickc@cygnus.com>
* elf32-fr30.c (fr30_elf_gc_mark_hook): New function.
(fr30_elf_gc_sweep_hook): New function.
(elf_backend_can_gc_sections): Define.
Mon Feb 1 12:21:47 1999 Catherine Moore <clm@cygnus.com> Mon Feb 1 12:21:47 1999 Catherine Moore <clm@cygnus.com>
* targets.c (bfd_target_vector): Add bfd_elf32_littlearm_oabi_vec * targets.c (bfd_target_vector): Add bfd_elf32_littlearm_oabi_vec

76
bfd/elf32-fr30.c
View File

@ -36,6 +36,10 @@ static boolean fr30_elf_relocate_section
PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *, Elf_Internal_Rela *, Elf_Internal_Sym *, asection **)); PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *, Elf_Internal_Rela *, Elf_Internal_Sym *, asection **));
static bfd_reloc_status_type fr30_final_link_relocate static bfd_reloc_status_type fr30_final_link_relocate
PARAMS ((reloc_howto_type *, bfd *, asection *, bfd_byte *, Elf_Internal_Rela *, bfd_vma)); PARAMS ((reloc_howto_type *, bfd *, asection *, bfd_byte *, Elf_Internal_Rela *, bfd_vma));
static boolean fr30_elf_gc_sweep_hook
PARAMS ((bfd *, struct bfd_link_info *, asection *, const Elf_Internal_Rela *));
static asection * fr30_elf_gc_mark_hook
PARAMS ((bfd *, struct bfd_link_info *, Elf_Internal_Rela *, struct elf_link_hash_entry *, Elf_Internal_Sym *));
static reloc_howto_type fr30_elf_howto_table [] = static reloc_howto_type fr30_elf_howto_table [] =
{ {
@ -523,7 +527,14 @@ fr30_elf_relocate_section (output_bfd, info, input_bfd, input_section,
bfd_vma relocation; bfd_vma relocation;
bfd_reloc_status_type r; bfd_reloc_status_type r;
const char * name = NULL; const char * name = NULL;
int r_type;
r_type = ELF32_R_TYPE (rel->r_info);
if ( r_type == R_FR30_GNU_VTINHERIT
|| r_type == R_FR30_GNU_VTENTRY)
continue;
r_symndx = ELF32_R_SYM (rel->r_info); r_symndx = ELF32_R_SYM (rel->r_info);
if (info->relocateable) if (info->relocateable)
@ -664,6 +675,63 @@ fr30_elf_relocate_section (output_bfd, info, input_bfd, input_section,
return true; return true;
} }
/* Return the section that should be marked against GC for a given
relocation. */
static asection *
fr30_elf_gc_mark_hook (abfd, info, rel, h, sym)
bfd * abfd;
struct bfd_link_info * info;
Elf_Internal_Rela * rel;
struct elf_link_hash_entry * h;
Elf_Internal_Sym * sym;
{
if (h != NULL)
{
switch (ELF32_R_TYPE (rel->r_info))
{
case R_FR30_GNU_VTINHERIT:
case R_FR30_GNU_VTENTRY:
break;
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;
}
}
}
else
{
if (!(elf_bad_symtab (abfd)
&& 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 (abfd, sym->st_shndx);
}
}
return NULL;
}
/* Update the got entry reference counts for the section being removed. */
static boolean
fr30_elf_gc_sweep_hook (abfd, info, sec, relocs)
bfd * abfd;
struct bfd_link_info * info;
asection * sec;
const Elf_Internal_Rela * relocs;
{
return true;
}
#define ELF_ARCH bfd_arch_fr30 #define ELF_ARCH bfd_arch_fr30
#define ELF_MACHINE_CODE EM_CYGNUS_FR30 #define ELF_MACHINE_CODE EM_CYGNUS_FR30
#define ELF_MAXPAGESIZE 0x1000 #define ELF_MAXPAGESIZE 0x1000
@ -674,7 +742,11 @@ fr30_elf_relocate_section (output_bfd, info, input_bfd, input_section,
#define elf_info_to_howto_rel NULL #define elf_info_to_howto_rel NULL
#define elf_info_to_howto fr30_info_to_howto_rela #define elf_info_to_howto fr30_info_to_howto_rela
#define elf_backend_relocate_section fr30_elf_relocate_section #define elf_backend_relocate_section fr30_elf_relocate_section
#define elf_backend_gc_mark_hook fr30_elf_gc_mark_hook
#define elf_backend_gc_sweep_hook fr30_elf_gc_sweep_hook
#define elf_backend_can_gc_sections 1
#define bfd_elf32_bfd_reloc_type_lookup fr30_reloc_type_lookup #define bfd_elf32_bfd_reloc_type_lookup fr30_reloc_type_lookup
#include "elf32-target.h" #include "elf32-target.h"