/* PowerPC-specific support for 32-bit ELF
- Copyright 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001
+ Copyright 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002
Free Software Foundation, Inc.
Written by Ian Lance Taylor, Cygnus Support.
#include "elf-bfd.h"
#include "elf/ppc.h"
-#define USE_RELA /* we want RELA relocations, not REL */
+/* RELA relocations are used here. */
static reloc_howto_type *ppc_elf_reloc_type_lookup
PARAMS ((bfd *abfd, bfd_reloc_code_real_type code));
PARAMS ((bfd *, asection *, struct bfd_link_info *, boolean *));
static bfd_reloc_status_type ppc_elf_addr16_ha_reloc
PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
+static boolean ppc_elf_object_p PARAMS ((bfd *));
static boolean ppc_elf_set_private_flags PARAMS ((bfd *, flagword));
static boolean ppc_elf_merge_private_bfd_data PARAMS ((bfd *, bfd *));
static int ppc_elf_additional_program_headers PARAMS ((bfd *));
static boolean ppc_elf_modify_segment_map PARAMS ((bfd *));
+static asection *ppc_elf_create_got
+ PARAMS ((bfd *, struct bfd_link_info *));
static boolean ppc_elf_create_dynamic_sections
PARAMS ((bfd *, struct bfd_link_info *));
static boolean ppc_elf_section_from_shdr PARAMS ((bfd *,
Elf32_Internal_Shdr *,
- char *));
+ const char *));
static boolean ppc_elf_fake_sections
PARAMS ((bfd *, Elf32_Internal_Shdr *, asection *));
asection *,
const Elf_Internal_Rela *));
-static asection * ppc_elf_gc_mark_hook PARAMS ((bfd *abfd,
+static asection * ppc_elf_gc_mark_hook PARAMS ((asection *sec,
struct bfd_link_info *info,
Elf_Internal_Rela *rel,
struct elf_link_hash_entry *h,
0xffff, /* dst_mask */
false), /* pcrel_offset */
- /* 32-bit section relative relocation. */
+ /* 16-bit section relative relocation. */
HOWTO (R_PPC_SECTOFF, /* type */
0, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 32, /* bitsize */
- true, /* pc_relative */
+ 1, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ false, /* pc_relative */
0, /* bitpos */
complain_overflow_bitfield, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_PPC_SECTOFF", /* name */
false, /* partial_inplace */
0, /* src_mask */
- 0, /* dst_mask */
- true), /* pcrel_offset */
+ 0xffff, /* dst_mask */
+ false), /* pcrel_offset */
/* 16-bit lower half section relative relocation. */
HOWTO (R_PPC_SECTOFF_LO, /* type */
case BFD_RELOC_HI16_PLTOFF: ppc_reloc = R_PPC_PLT16_HI; break;
case BFD_RELOC_HI16_S_PLTOFF: ppc_reloc = R_PPC_PLT16_HA; break;
case BFD_RELOC_GPREL16: ppc_reloc = R_PPC_SDAREL16; break;
- case BFD_RELOC_32_BASEREL: ppc_reloc = R_PPC_SECTOFF; break;
+ case BFD_RELOC_16_BASEREL: ppc_reloc = R_PPC_SECTOFF; break;
case BFD_RELOC_LO16_BASEREL: ppc_reloc = R_PPC_SECTOFF_LO; break;
case BFD_RELOC_HI16_BASEREL: ppc_reloc = R_PPC_SECTOFF_HI; break;
case BFD_RELOC_HI16_S_BASEREL: ppc_reloc = R_PPC_SECTOFF_HA; break;
return bfd_reloc_continue;
}
+/* Fix bad default arch selected for a 32 bit input bfd when the
+ default is 64 bit. */
+
+static boolean
+ppc_elf_object_p (abfd)
+ bfd *abfd;
+{
+ if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 64)
+ {
+ Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd);
+
+ if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS32)
+ {
+ /* Relies on arch after 64 bit default being 32 bit default. */
+ abfd->arch_info = abfd->arch_info->next;
+ BFD_ASSERT (abfd->arch_info->bits_per_word == 32);
+ }
+ }
+ return true;
+}
+
/* Function to set whether a module needs the -mrelocatable bit set. */
static boolean
boolean error;
/* Check if we have the same endianess */
- if (_bfd_generic_verify_endian_match (ibfd, obfd) == false)
+ if (! _bfd_generic_verify_endian_match (ibfd, obfd))
return false;
if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
ppc_elf_section_from_shdr (abfd, hdr, name)
bfd *abfd;
Elf32_Internal_Shdr *hdr;
- char *name;
+ const char *name;
{
asection *newsect;
flagword flags;
return true;
}
\f
+/* The powerpc .got has a blrl instruction in it. Mark it executable. */
+
+static asection *
+ppc_elf_create_got (abfd, info)
+ bfd *abfd;
+ struct bfd_link_info *info;
+{
+ register asection *s;
+ flagword flags;
+
+ if (!_bfd_elf_create_got_section (abfd, info))
+ return NULL;
+
+ s = bfd_get_section_by_name (abfd, ".got");
+ if (s == NULL)
+ abort ();
+
+ flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS | SEC_IN_MEMORY
+ | SEC_LINKER_CREATED);
+ if (!bfd_set_section_flags (abfd, s, flags))
+ return NULL;
+ return s;
+}
+
/* We have to create .dynsbss and .rela.sbss here so that they get mapped
to output sections (just like _bfd_elf_create_dynamic_sections has
to create .dynbss and .rela.bss). */
register asection *s;
flagword flags;
+ if (!ppc_elf_create_got (abfd, info))
+ return false;
+
if (!_bfd_elf_create_dynamic_sections (abfd, info))
return false;
|| ! bfd_set_section_alignment (abfd, s, 2))
return false;
}
- return true;
+
+ s = bfd_get_section_by_name (abfd, ".plt");
+ if (s == NULL)
+ abort ();
+
+ flags = SEC_ALLOC | SEC_CODE | SEC_IN_MEMORY | SEC_LINKER_CREATED;
+ return bfd_set_section_flags (abfd, s, flags);
}
/* Adjust a symbol defined by a dynamic object and referenced by a
{
if (dynobj == NULL)
elf_hash_table (info)->dynobj = dynobj = abfd;
- if (! _bfd_elf_create_got_section (dynobj, info))
+ sgot = ppc_elf_create_got (dynobj, info);
+ if (sgot == NULL)
return false;
- sgot = bfd_get_section_by_name (dynobj, ".got");
- BFD_ASSERT (sgot != NULL);
}
}
{
if (dynobj == NULL)
elf_hash_table (info)->dynobj = dynobj = abfd;
- if (! _bfd_elf_create_got_section (dynobj, info))
+ sgot = ppc_elf_create_got (dynobj, info);
+ if (sgot == NULL)
return false;
- sgot = bfd_get_section_by_name (dynobj, ".got");
- BFD_ASSERT (sgot != NULL);
}
if (srelgot == NULL
relocation. */
static asection *
-ppc_elf_gc_mark_hook (abfd, info, rel, h, sym)
- bfd *abfd;
+ppc_elf_gc_mark_hook (sec, info, rel, h, sym)
+ asection *sec;
struct bfd_link_info *info ATTRIBUTE_UNUSED;
Elf_Internal_Rela *rel;
struct elf_link_hash_entry *h;
}
}
else
- {
- return bfd_section_from_elf_index (abfd, sym->st_shndx);
- }
+ return bfd_section_from_elf_index (sec->owner, sym->st_shndx);
return NULL;
}
{
if (sym->st_shndx == SHN_COMMON
&& !info->relocateable
- && sym->st_size <= elf_gp_size (abfd))
+ && sym->st_size <= elf_gp_size (abfd)
+ && info->hash->creator->flavour == bfd_target_elf_flavour)
{
/* Common symbols less than or equal to -G nn bytes are automatically
put into .sdata. */
else
{
BFD_ASSERT ((h->got.offset & 1) == 0);
- bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + h->got.offset);
rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_GLOB_DAT);
rela.r_addend = 0;
}
+ bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + h->got.offset);
bfd_elf32_swap_reloca_out (output_bfd, &rela,
((Elf32_External_Rela *) srela->contents
+ srela->reloc_count));
(info->relocateable) ? " (relocatable)" : "");
#endif
+ if (info->relocateable)
+ return true;
+
if (!ppc_elf_howto_table[R_PPC_ADDR32])
/* Initialize howto table if needed. */
ppc_elf_howto_init ();
howto = ppc_elf_howto_table[(int) r_type];
r_symndx = ELF32_R_SYM (rel->r_info);
- 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 ((unsigned) ELF_ST_TYPE (sym->st_info) == STT_SECTION)
- {
- sec = local_sections[r_symndx];
- addend = rel->r_addend += sec->output_offset + sym->st_value;
- }
- }
-
-#ifdef DEBUG
- fprintf (stderr, "\ttype = %s (%d), symbol index = %ld, offset = %ld, addend = %ld\n",
- howto->name,
- (int) r_type,
- r_symndx,
- (long) offset,
- (long) addend);
-#endif
- continue;
- }
-
- /* This is a final link. */
if (r_symndx < symtab_hdr->sh_info)
{
sym = local_syms + r_symndx;
+ sreloc->reloc_count));
++sreloc->reloc_count;
- /* This reloc will be computed at runtime, so there's no
- need to do anything now, unless this is a RELATIVE
- reloc in an unallocated section. */
- if (skip != -1
- || (input_section->flags & SEC_ALLOC) != 0
- || ELF32_R_TYPE (outrel.r_info) != R_PPC_RELATIVE)
+ if (skip == -1)
continue;
+
+ /* This reloc will be computed at runtime. We clear the memory
+ so that it contains predictable value. */
+ if (! skip
+ && ((input_section->flags & SEC_ALLOC) != 0
+ || ELF32_R_TYPE (outrel.r_info) != R_PPC_RELATIVE))
+ {
+ relocation = howto->pc_relative ? outrel.r_offset : 0;
+ addend = 0;
+ break;
+ }
}
/* Arithmetic adjust relocations that aren't going into a
off &= ~1;
else
{
- bfd_put_32 (output_bfd, relocation, sgot->contents + off);
if (info->shared)
{
srelgot->contents)
+ srelgot->reloc_count));
++srelgot->reloc_count;
+ relocation = 0;
}
+ bfd_put_32 (output_bfd, relocation, sgot->contents + off);
local_got_offsets[r_symndx] |= 1;
}
BFD_ASSERT (sec != (asection *) 0);
name = bfd_get_section_name (abfd, sec->output_section);
- if (strcmp (name, ".sdata") != 0
- && strcmp (name, ".sbss") != 0)
+ if (! ((strncmp (name, ".sdata", 6) == 0
+ && (name[6] == 0 || name[6] == '.'))
+ || (strncmp (name, ".sbss", 5) == 0
+ && (name[5] == 0 || name[5] == '.'))))
{
(*_bfd_error_handler) (_("%s: The target (%s) of a %s relocation is in the wrong output section (%s)"),
bfd_archive_filename (input_bfd),
BFD_ASSERT (sec != (asection *) 0);
name = bfd_get_section_name (abfd, sec->output_section);
- if (strcmp (name, ".sdata2") != 0 && strcmp (name, ".sbss2") != 0)
+ if (! (strncmp (name, ".sdata2", 7) == 0
+ || strncmp (name, ".sbss2", 6) == 0))
{
(*_bfd_error_handler) (_("%s: The target (%s) of a %s relocation is in the wrong output section (%s)"),
bfd_archive_filename (input_bfd),
BFD_ASSERT (sec != (asection *) 0);
name = bfd_get_section_name (abfd, sec->output_section);
- if (strcmp (name, ".sdata") == 0 || strcmp (name, ".sbss") == 0)
+ if (((strncmp (name, ".sdata", 6) == 0
+ && (name[6] == 0 || name[6] == '.'))
+ || (strncmp (name, ".sbss", 5) == 0
+ && (name[5] == 0 || name[5] == '.'))))
{
reg = 13;
addend -= (sdata->sym_hash->root.u.def.value
+ sdata->sym_hash->root.u.def.section->output_offset);
}
- else if (strcmp (name, ".sdata2") == 0
- || strcmp (name, ".sbss2") == 0)
+ else if (strncmp (name, ".sdata2", 7) == 0
+ || strncmp (name, ".sbss2", 6) == 0)
{
reg = 2;
addend -= (sdata2->sym_hash->root.u.def.value
#define elf_backend_can_refcount 1
#define elf_backend_got_header_size 12
#define elf_backend_plt_header_size PLT_INITIAL_ENTRY_SIZE
+#define elf_backend_rela_normal 1
#define bfd_elf32_bfd_merge_private_bfd_data ppc_elf_merge_private_bfd_data
#define bfd_elf32_bfd_relax_section ppc_elf_relax_section
#define bfd_elf32_bfd_set_private_flags ppc_elf_set_private_flags
#define bfd_elf32_bfd_final_link _bfd_elf32_gc_common_final_link
+#define elf_backend_object_p ppc_elf_object_p
#define elf_backend_gc_mark_hook ppc_elf_gc_mark_hook
#define elf_backend_gc_sweep_hook ppc_elf_gc_sweep_hook
#define elf_backend_section_from_shdr ppc_elf_section_from_shdr
#define elf_backend_reloc_type_class ppc_elf_reloc_type_class
#include "elf32-target.h"
+
+/* QNX support. */
+#include "elf32-qnx.h"
+
+#undef TARGET_LITTLE_SYM
+#define TARGET_LITTLE_SYM bfd_elf32_powerpcleqnx_vec
+#undef TARGET_LITTLE_NAME
+#define TARGET_LITTLE_NAME "elf32-powerpcle-nto"
+#undef TARGET_BIG_SYM
+#define TARGET_BIG_SYM bfd_elf32_powerpcqnx_vec
+#undef TARGET_BIG_NAME
+#define TARGET_BIG_NAME "elf32-powerpc-nto"
+
+#define elf32_bed elf32_ppc_qnx_bed
+
+#include "elf32-target.h"
+
+#undef elf_backend_set_nonloadable_filepos
+#undef elf_backend_is_contained_by_filepos
+#undef elf_backend_copy_private_bfd_data_p
+#undef elf32_bed
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