#define ECOFF_64
#include "ecoffswap.h"
-static bfd_boolean alpha_elf_dynamic_symbol_p
- PARAMS ((struct elf_link_hash_entry *, struct bfd_link_info *));
-static struct bfd_hash_entry * elf64_alpha_link_hash_newfunc
- PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *));
-static struct bfd_link_hash_table * elf64_alpha_bfd_link_hash_table_create
- PARAMS ((bfd *));
-
-static bfd_reloc_status_type elf64_alpha_reloc_nil
- PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
-static bfd_reloc_status_type elf64_alpha_reloc_bad
- PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
-static bfd_reloc_status_type elf64_alpha_do_reloc_gpdisp
- PARAMS ((bfd *, bfd_vma, bfd_byte *, bfd_byte *));
-static bfd_reloc_status_type elf64_alpha_reloc_gpdisp
- PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
-
-static reloc_howto_type * elf64_alpha_bfd_reloc_type_lookup
- PARAMS ((bfd *, bfd_reloc_code_real_type));
-static void elf64_alpha_info_to_howto
- PARAMS ((bfd *, arelent *, Elf_Internal_Rela *));
-
-static bfd_boolean elf64_alpha_mkobject
- PARAMS ((bfd *));
-static bfd_boolean elf64_alpha_object_p
- PARAMS ((bfd *));
-static bfd_boolean elf64_alpha_section_flags
- PARAMS ((flagword *, const Elf_Internal_Shdr *));
-static bfd_boolean elf64_alpha_fake_sections
- PARAMS ((bfd *, Elf_Internal_Shdr *, asection *));
-static bfd_boolean elf64_alpha_create_got_section
- PARAMS ((bfd *, struct bfd_link_info *));
-static bfd_boolean elf64_alpha_create_dynamic_sections
- PARAMS ((bfd *, struct bfd_link_info *));
-
-static bfd_boolean elf64_alpha_read_ecoff_info
- PARAMS ((bfd *, asection *, struct ecoff_debug_info *));
-static bfd_boolean elf64_alpha_is_local_label_name
- PARAMS ((bfd *, const char *));
-static bfd_boolean elf64_alpha_find_nearest_line
- PARAMS ((bfd *, asection *, asymbol **, bfd_vma, const char **,
- const char **, unsigned int *));
-
-#if defined(__STDC__) || defined(ALMOST_STDC)
-struct alpha_elf_link_hash_entry;
-#endif
-
-static bfd_boolean elf64_alpha_output_extsym
- PARAMS ((struct alpha_elf_link_hash_entry *, PTR));
-
-static bfd_boolean elf64_alpha_can_merge_gots
- PARAMS ((bfd *, bfd *));
-static void elf64_alpha_merge_gots
- PARAMS ((bfd *, bfd *));
-static bfd_boolean elf64_alpha_calc_got_offsets_for_symbol
- PARAMS ((struct alpha_elf_link_hash_entry *, PTR));
-static void elf64_alpha_calc_got_offsets
- PARAMS ((struct bfd_link_info *));
-static bfd_boolean elf64_alpha_size_got_sections
- PARAMS ((struct bfd_link_info *));
-static bfd_boolean elf64_alpha_size_plt_section
- PARAMS ((struct bfd_link_info *));
-static bfd_boolean elf64_alpha_size_plt_section_1
- PARAMS ((struct alpha_elf_link_hash_entry *, PTR));
-static bfd_boolean elf64_alpha_always_size_sections
- PARAMS ((bfd *, struct bfd_link_info *));
-static int alpha_dynamic_entries_for_reloc
- PARAMS ((int, int, int));
-static bfd_boolean elf64_alpha_calc_dynrel_sizes
- PARAMS ((struct alpha_elf_link_hash_entry *, struct bfd_link_info *));
-static bfd_boolean elf64_alpha_size_rela_got_section
- PARAMS ((struct bfd_link_info *));
-static bfd_boolean elf64_alpha_size_rela_got_1
- PARAMS ((struct alpha_elf_link_hash_entry *, struct bfd_link_info *));
-static bfd_boolean elf64_alpha_add_symbol_hook
- PARAMS ((bfd *, struct bfd_link_info *, Elf_Internal_Sym *,
- const char **, flagword *, asection **, bfd_vma *));
-static struct alpha_elf_got_entry *get_got_entry
- PARAMS ((bfd *, struct alpha_elf_link_hash_entry *, unsigned long,
- unsigned long, bfd_vma));
-static bfd_boolean elf64_alpha_check_relocs
- PARAMS ((bfd *, struct bfd_link_info *, asection *sec,
- const Elf_Internal_Rela *));
-static bfd_boolean elf64_alpha_adjust_dynamic_symbol
- PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *));
-static bfd_boolean elf64_alpha_size_dynamic_sections
- PARAMS ((bfd *, struct bfd_link_info *));
-static void elf64_alpha_emit_dynrel
- PARAMS ((bfd *, struct bfd_link_info *, asection *, asection *,
- bfd_vma, long, long, bfd_vma));
-static bfd_boolean elf64_alpha_relocate_section_r
- PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
- Elf_Internal_Rela *, Elf_Internal_Sym *, asection **));
-static bfd_boolean elf64_alpha_relocate_section
- PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
- Elf_Internal_Rela *, Elf_Internal_Sym *, asection **));
-static bfd_boolean elf64_alpha_finish_dynamic_symbol
- PARAMS ((bfd *, struct bfd_link_info *, struct elf_link_hash_entry *,
- Elf_Internal_Sym *));
-static bfd_boolean elf64_alpha_finish_dynamic_sections
- PARAMS ((bfd *, struct bfd_link_info *));
-static bfd_boolean elf64_alpha_final_link
- PARAMS ((bfd *, struct bfd_link_info *));
-static bfd_boolean elf64_alpha_merge_ind_symbols
- PARAMS ((struct alpha_elf_link_hash_entry *, PTR));
-static Elf_Internal_Rela * elf64_alpha_find_reloc_at_ofs
- PARAMS ((Elf_Internal_Rela *, Elf_Internal_Rela *, bfd_vma, int));
-static enum elf_reloc_type_class elf64_alpha_reloc_type_class
- PARAMS ((const Elf_Internal_Rela *));
\f
struct alpha_elf_link_hash_entry
{
#define alpha_elf_link_hash_traverse(table, func, info) \
(elf_link_hash_traverse \
(&(table)->root, \
- (bfd_boolean (*) PARAMS ((struct elf_link_hash_entry *, PTR))) (func), \
+ (bfd_boolean (*) (struct elf_link_hash_entry *, PTR)) (func), \
(info)))
/* Get the Alpha ELF linker hash table from a link_info structure. */
address is ever taken. */
static inline bfd_boolean
-alpha_elf_dynamic_symbol_p (h, info)
- struct elf_link_hash_entry *h;
- struct bfd_link_info *info;
+alpha_elf_dynamic_symbol_p (struct elf_link_hash_entry *h,
+ struct bfd_link_info *info)
{
return _bfd_elf_dynamic_symbol_p (h, info, 0);
}
/* Create an entry in a Alpha ELF linker hash table. */
static struct bfd_hash_entry *
-elf64_alpha_link_hash_newfunc (entry, table, string)
- struct bfd_hash_entry *entry;
- struct bfd_hash_table *table;
- const char *string;
+elf64_alpha_link_hash_newfunc (struct bfd_hash_entry *entry,
+ struct bfd_hash_table *table,
+ const char *string)
{
struct alpha_elf_link_hash_entry *ret =
(struct alpha_elf_link_hash_entry *) entry;
/* Create a Alpha ELF linker hash table. */
static struct bfd_link_hash_table *
-elf64_alpha_bfd_link_hash_table_create (abfd)
- bfd *abfd;
+elf64_alpha_bfd_link_hash_table_create (bfd *abfd)
{
struct alpha_elf_link_hash_table *ret;
bfd_size_type amt = sizeof (struct alpha_elf_link_hash_table);
((struct alpha_elf_obj_tdata *) (abfd)->tdata.any)
static bfd_boolean
-elf64_alpha_mkobject (abfd)
- bfd *abfd;
+elf64_alpha_mkobject (bfd *abfd)
{
bfd_size_type amt = sizeof (struct alpha_elf_obj_tdata);
abfd->tdata.any = bfd_zalloc (abfd, amt);
}
static bfd_boolean
-elf64_alpha_object_p (abfd)
- bfd *abfd;
+elf64_alpha_object_p (bfd *abfd)
{
/* Set the right machine number for an Alpha ELF file. */
return bfd_default_set_arch_mach (abfd, bfd_arch_alpha, 0);
}
\f
+/* A relocation function which doesn't do anything. */
+
+static bfd_reloc_status_type
+elf64_alpha_reloc_nil (bfd *abfd ATTRIBUTE_UNUSED, arelent *reloc,
+ asymbol *sym ATTRIBUTE_UNUSED,
+ PTR data ATTRIBUTE_UNUSED, asection *sec,
+ bfd *output_bfd, char **error_message ATTRIBUTE_UNUSED)
+{
+ if (output_bfd)
+ reloc->address += sec->output_offset;
+ return bfd_reloc_ok;
+}
+
+/* A relocation function used for an unsupported reloc. */
+
+static bfd_reloc_status_type
+elf64_alpha_reloc_bad (bfd *abfd ATTRIBUTE_UNUSED, arelent *reloc,
+ asymbol *sym ATTRIBUTE_UNUSED,
+ PTR data ATTRIBUTE_UNUSED, asection *sec,
+ bfd *output_bfd, char **error_message ATTRIBUTE_UNUSED)
+{
+ if (output_bfd)
+ reloc->address += sec->output_offset;
+ return bfd_reloc_notsupported;
+}
+
+/* Do the work of the GPDISP relocation. */
+
+static bfd_reloc_status_type
+elf64_alpha_do_reloc_gpdisp (bfd *abfd, bfd_vma gpdisp, bfd_byte *p_ldah,
+ bfd_byte *p_lda)
+{
+ bfd_reloc_status_type ret = bfd_reloc_ok;
+ bfd_vma addend;
+ unsigned long i_ldah, i_lda;
+
+ i_ldah = bfd_get_32 (abfd, p_ldah);
+ i_lda = bfd_get_32 (abfd, p_lda);
+
+ /* Complain if the instructions are not correct. */
+ if (((i_ldah >> 26) & 0x3f) != 0x09
+ || ((i_lda >> 26) & 0x3f) != 0x08)
+ ret = bfd_reloc_dangerous;
+
+ /* Extract the user-supplied offset, mirroring the sign extensions
+ that the instructions perform. */
+ addend = ((i_ldah & 0xffff) << 16) | (i_lda & 0xffff);
+ addend = (addend ^ 0x80008000) - 0x80008000;
+
+ gpdisp += addend;
+
+ if ((bfd_signed_vma) gpdisp < -(bfd_signed_vma) 0x80000000
+ || (bfd_signed_vma) gpdisp >= (bfd_signed_vma) 0x7fff8000)
+ ret = bfd_reloc_overflow;
+
+ /* compensate for the sign extension again. */
+ i_ldah = ((i_ldah & 0xffff0000)
+ | (((gpdisp >> 16) + ((gpdisp >> 15) & 1)) & 0xffff));
+ i_lda = (i_lda & 0xffff0000) | (gpdisp & 0xffff);
+
+ bfd_put_32 (abfd, (bfd_vma) i_ldah, p_ldah);
+ bfd_put_32 (abfd, (bfd_vma) i_lda, p_lda);
+
+ return ret;
+}
+
+/* The special function for the GPDISP reloc. */
+
+static bfd_reloc_status_type
+elf64_alpha_reloc_gpdisp (bfd *abfd, arelent *reloc_entry,
+ asymbol *sym ATTRIBUTE_UNUSED, PTR data,
+ asection *input_section, bfd *output_bfd,
+ char **err_msg)
+{
+ bfd_reloc_status_type ret;
+ bfd_vma gp, relocation;
+ bfd_vma high_address;
+ bfd_byte *p_ldah, *p_lda;
+
+ /* Don't do anything if we're not doing a final link. */
+ if (output_bfd)
+ {
+ reloc_entry->address += input_section->output_offset;
+ return bfd_reloc_ok;
+ }
+
+ high_address = bfd_get_section_limit (abfd, input_section);
+ if (reloc_entry->address > high_address
+ || reloc_entry->address + reloc_entry->addend > high_address)
+ return bfd_reloc_outofrange;
+
+ /* The gp used in the portion of the output object to which this
+ input object belongs is cached on the input bfd. */
+ gp = _bfd_get_gp_value (abfd);
+
+ relocation = (input_section->output_section->vma
+ + input_section->output_offset
+ + reloc_entry->address);
+
+ p_ldah = (bfd_byte *) data + reloc_entry->address;
+ p_lda = p_ldah + reloc_entry->addend;
+
+ ret = elf64_alpha_do_reloc_gpdisp (abfd, gp - relocation, p_ldah, p_lda);
+
+ /* Complain if the instructions are not correct. */
+ if (ret == bfd_reloc_dangerous)
+ *err_msg = _("GPDISP relocation did not find ldah and lda instructions");
+
+ return ret;
+}
+
/* In case we're on a 32-bit machine, construct a 64-bit "-1" value
from smaller values. Start with zero, widen, *then* decrement. */
#define MINUS_ONE (((bfd_vma)0) - 1)
FALSE), /* pcrel_offset */
};
-/* A relocation function which doesn't do anything. */
-
-static bfd_reloc_status_type
-elf64_alpha_reloc_nil (abfd, reloc, sym, data, sec, output_bfd, error_message)
- bfd *abfd ATTRIBUTE_UNUSED;
- arelent *reloc;
- asymbol *sym ATTRIBUTE_UNUSED;
- PTR data ATTRIBUTE_UNUSED;
- asection *sec;
- bfd *output_bfd;
- char **error_message ATTRIBUTE_UNUSED;
-{
- if (output_bfd)
- reloc->address += sec->output_offset;
- return bfd_reloc_ok;
-}
-
-/* A relocation function used for an unsupported reloc. */
-
-static bfd_reloc_status_type
-elf64_alpha_reloc_bad (abfd, reloc, sym, data, sec, output_bfd, error_message)
- bfd *abfd ATTRIBUTE_UNUSED;
- arelent *reloc;
- asymbol *sym ATTRIBUTE_UNUSED;
- PTR data ATTRIBUTE_UNUSED;
- asection *sec;
- bfd *output_bfd;
- char **error_message ATTRIBUTE_UNUSED;
-{
- if (output_bfd)
- reloc->address += sec->output_offset;
- return bfd_reloc_notsupported;
-}
-
-/* Do the work of the GPDISP relocation. */
-
-static bfd_reloc_status_type
-elf64_alpha_do_reloc_gpdisp (abfd, gpdisp, p_ldah, p_lda)
- bfd *abfd;
- bfd_vma gpdisp;
- bfd_byte *p_ldah;
- bfd_byte *p_lda;
-{
- bfd_reloc_status_type ret = bfd_reloc_ok;
- bfd_vma addend;
- unsigned long i_ldah, i_lda;
-
- i_ldah = bfd_get_32 (abfd, p_ldah);
- i_lda = bfd_get_32 (abfd, p_lda);
-
- /* Complain if the instructions are not correct. */
- if (((i_ldah >> 26) & 0x3f) != 0x09
- || ((i_lda >> 26) & 0x3f) != 0x08)
- ret = bfd_reloc_dangerous;
-
- /* Extract the user-supplied offset, mirroring the sign extensions
- that the instructions perform. */
- addend = ((i_ldah & 0xffff) << 16) | (i_lda & 0xffff);
- addend = (addend ^ 0x80008000) - 0x80008000;
-
- gpdisp += addend;
-
- if ((bfd_signed_vma) gpdisp < -(bfd_signed_vma) 0x80000000
- || (bfd_signed_vma) gpdisp >= (bfd_signed_vma) 0x7fff8000)
- ret = bfd_reloc_overflow;
-
- /* compensate for the sign extension again. */
- i_ldah = ((i_ldah & 0xffff0000)
- | (((gpdisp >> 16) + ((gpdisp >> 15) & 1)) & 0xffff));
- i_lda = (i_lda & 0xffff0000) | (gpdisp & 0xffff);
-
- bfd_put_32 (abfd, (bfd_vma) i_ldah, p_ldah);
- bfd_put_32 (abfd, (bfd_vma) i_lda, p_lda);
-
- return ret;
-}
-
-/* The special function for the GPDISP reloc. */
-
-static bfd_reloc_status_type
-elf64_alpha_reloc_gpdisp (abfd, reloc_entry, sym, data, input_section,
- output_bfd, err_msg)
- bfd *abfd;
- arelent *reloc_entry;
- asymbol *sym ATTRIBUTE_UNUSED;
- PTR data;
- asection *input_section;
- bfd *output_bfd;
- char **err_msg;
-{
- bfd_reloc_status_type ret;
- bfd_vma gp, relocation;
- bfd_vma high_address;
- bfd_byte *p_ldah, *p_lda;
-
- /* Don't do anything if we're not doing a final link. */
- if (output_bfd)
- {
- reloc_entry->address += input_section->output_offset;
- return bfd_reloc_ok;
- }
-
- high_address = bfd_get_section_limit (abfd, input_section);
- if (reloc_entry->address > high_address
- || reloc_entry->address + reloc_entry->addend > high_address)
- return bfd_reloc_outofrange;
-
- /* The gp used in the portion of the output object to which this
- input object belongs is cached on the input bfd. */
- gp = _bfd_get_gp_value (abfd);
-
- relocation = (input_section->output_section->vma
- + input_section->output_offset
- + reloc_entry->address);
-
- p_ldah = (bfd_byte *) data + reloc_entry->address;
- p_lda = p_ldah + reloc_entry->addend;
-
- ret = elf64_alpha_do_reloc_gpdisp (abfd, gp - relocation, p_ldah, p_lda);
-
- /* Complain if the instructions are not correct. */
- if (ret == bfd_reloc_dangerous)
- *err_msg = _("GPDISP relocation did not find ldah and lda instructions");
-
- return ret;
-}
-
/* A mapping from BFD reloc types to Alpha ELF reloc types. */
struct elf_reloc_map
/* Given a BFD reloc type, return a HOWTO structure. */
static reloc_howto_type *
-elf64_alpha_bfd_reloc_type_lookup (abfd, code)
- bfd *abfd ATTRIBUTE_UNUSED;
- bfd_reloc_code_real_type code;
+elf64_alpha_bfd_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
+ bfd_reloc_code_real_type code)
{
const struct elf_reloc_map *i, *e;
i = e = elf64_alpha_reloc_map;
/* Given an Alpha ELF reloc type, fill in an arelent structure. */
static void
-elf64_alpha_info_to_howto (abfd, cache_ptr, dst)
- bfd *abfd ATTRIBUTE_UNUSED;
- arelent *cache_ptr;
- Elf_Internal_Rela *dst;
+elf64_alpha_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr,
+ Elf_Internal_Rela *dst)
{
- unsigned r_type;
-
- r_type = ELF64_R_TYPE(dst->r_info);
+ unsigned r_type = ELF64_R_TYPE(dst->r_info);
BFD_ASSERT (r_type < (unsigned int) R_ALPHA_max);
cache_ptr->howto = &elf64_alpha_howto_table[r_type];
}
- align_power ((bfd_vma) 16, \
elf_hash_table (info)->tls_sec->alignment_power))
\f
-/* These functions do relaxation for Alpha ELF.
+/* PLT/GOT Stuff */
+#define PLT_HEADER_SIZE 32
+#define PLT_HEADER_WORD1 (bfd_vma) 0xc3600000 /* br $27,.+4 */
+#define PLT_HEADER_WORD2 (bfd_vma) 0xa77b000c /* ldq $27,12($27) */
+#define PLT_HEADER_WORD3 (bfd_vma) 0x47ff041f /* nop */
+#define PLT_HEADER_WORD4 (bfd_vma) 0x6b7b0000 /* jmp $27,($27) */
- Currently I'm only handling what I can do with existing compiler
- and assembler support, which means no instructions are removed,
- though some may be nopped. At this time GCC does not emit enough
- information to do all of the relaxing that is possible. It will
- take some not small amount of work for that to happen.
+#define PLT_ENTRY_SIZE 12
+#define PLT_ENTRY_WORD1 0xc3800000 /* br $28, plt0 */
+#define PLT_ENTRY_WORD2 0
+#define PLT_ENTRY_WORD3 0
- There are a couple of interesting papers that I once read on this
- subject, that I cannot find references to at the moment, that
- related to Alpha in particular. They are by David Wall, then of
- DEC WRL. */
+#define MAX_GOT_SIZE (64*1024)
-#define OP_LDA 0x08
-#define OP_LDAH 0x09
-#define INSN_JSR 0x68004000
-#define INSN_JSR_MASK 0xfc00c000
-#define OP_LDQ 0x29
-#define OP_BR 0x30
-#define OP_BSR 0x34
-#define INSN_UNOP 0x2ffe0000
-#define INSN_ADDQ 0x40000400
-#define INSN_RDUNIQ 0x0000009e
+#define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so"
+\f
+/* Handle an Alpha specific section when reading an object file. This
+ is called when bfd_section_from_shdr finds a section with an unknown
+ type.
+ FIXME: We need to handle the SHF_ALPHA_GPREL flag, but I'm not sure
+ how to. */
-struct alpha_relax_info
+static bfd_boolean
+elf64_alpha_section_from_shdr (bfd *abfd,
+ Elf_Internal_Shdr *hdr,
+ const char *name,
+ int shindex)
{
- bfd *abfd;
- asection *sec;
- bfd_byte *contents;
- Elf_Internal_Shdr *symtab_hdr;
- Elf_Internal_Rela *relocs, *relend;
- struct bfd_link_info *link_info;
- bfd_vma gp;
- bfd *gotobj;
- asection *tsec;
- struct alpha_elf_link_hash_entry *h;
- struct alpha_elf_got_entry **first_gotent;
- struct alpha_elf_got_entry *gotent;
- bfd_boolean changed_contents;
- bfd_boolean changed_relocs;
- unsigned char other;
-};
+ asection *newsect;
+
+ /* There ought to be a place to keep ELF backend specific flags, but
+ at the moment there isn't one. We just keep track of the
+ sections by their name, instead. Fortunately, the ABI gives
+ suggested names for all the MIPS specific sections, so we will
+ probably get away with this. */
+ switch (hdr->sh_type)
+ {
+ case SHT_ALPHA_DEBUG:
+ if (strcmp (name, ".mdebug") != 0)
+ return FALSE;
+ break;
+ default:
+ return FALSE;
+ }
-static bfd_boolean elf64_alpha_relax_with_lituse
- PARAMS((struct alpha_relax_info *info, bfd_vma symval,
- Elf_Internal_Rela *irel));
-static bfd_vma elf64_alpha_relax_opt_call
- PARAMS((struct alpha_relax_info *info, bfd_vma symval));
-static bfd_boolean elf64_alpha_relax_got_load
- PARAMS((struct alpha_relax_info *info, bfd_vma symval,
- Elf_Internal_Rela *irel, unsigned long));
-static bfd_boolean elf64_alpha_relax_gprelhilo
- PARAMS((struct alpha_relax_info *info, bfd_vma symval,
- Elf_Internal_Rela *irel, bfd_boolean));
-static bfd_boolean elf64_alpha_relax_tls_get_addr
- PARAMS((struct alpha_relax_info *info, bfd_vma symval,
- Elf_Internal_Rela *irel, bfd_boolean));
-static bfd_boolean elf64_alpha_relax_section
- PARAMS((bfd *abfd, asection *sec, struct bfd_link_info *link_info,
- bfd_boolean *again));
+ if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
+ return FALSE;
+ newsect = hdr->bfd_section;
-static Elf_Internal_Rela *
-elf64_alpha_find_reloc_at_ofs (rel, relend, offset, type)
- Elf_Internal_Rela *rel, *relend;
- bfd_vma offset;
- int type;
-{
- while (rel < relend)
+ if (hdr->sh_type == SHT_ALPHA_DEBUG)
{
- if (rel->r_offset == offset
- && ELF64_R_TYPE (rel->r_info) == (unsigned int) type)
- return rel;
- ++rel;
+ if (! bfd_set_section_flags (abfd, newsect,
+ (bfd_get_section_flags (abfd, newsect)
+ | SEC_DEBUGGING)))
+ return FALSE;
}
- return NULL;
+
+ return TRUE;
}
+/* Convert Alpha specific section flags to bfd internal section flags. */
+
static bfd_boolean
-elf64_alpha_relax_with_lituse (info, symval, irel)
- struct alpha_relax_info *info;
- bfd_vma symval;
- Elf_Internal_Rela *irel;
+elf64_alpha_section_flags (flagword *flags, const Elf_Internal_Shdr *hdr)
{
- Elf_Internal_Rela *urel, *irelend = info->relend;
- int flags, count, i;
- bfd_signed_vma disp;
- bfd_boolean fits16;
- bfd_boolean fits32;
- bfd_boolean lit_reused = FALSE;
- bfd_boolean all_optimized = TRUE;
- unsigned int lit_insn;
+ if (hdr->sh_flags & SHF_ALPHA_GPREL)
+ *flags |= SEC_SMALL_DATA;
- lit_insn = bfd_get_32 (info->abfd, info->contents + irel->r_offset);
- if (lit_insn >> 26 != OP_LDQ)
- {
- ((*_bfd_error_handler)
- ("%B: %A+0x%lx: warning: LITERAL relocation against unexpected insn",
- info->abfd, info->sec,
- (unsigned long) irel->r_offset));
- return TRUE;
- }
+ return TRUE;
+}
- /* Can't relax dynamic symbols. */
- if (alpha_elf_dynamic_symbol_p (&info->h->root, info->link_info))
- return TRUE;
+/* Set the correct type for an Alpha ELF section. We do this by the
+ section name, which is a hack, but ought to work. */
- /* Summarize how this particular LITERAL is used. */
- for (urel = irel+1, flags = count = 0; urel < irelend; ++urel, ++count)
+static bfd_boolean
+elf64_alpha_fake_sections (bfd *abfd, Elf_Internal_Shdr *hdr, asection *sec)
+{
+ register const char *name;
+
+ name = bfd_get_section_name (abfd, sec);
+
+ if (strcmp (name, ".mdebug") == 0)
{
- if (ELF64_R_TYPE (urel->r_info) != R_ALPHA_LITUSE)
- break;
- if (urel->r_addend <= 3)
- flags |= 1 << urel->r_addend;
+ hdr->sh_type = SHT_ALPHA_DEBUG;
+ /* In a shared object on Irix 5.3, the .mdebug section has an
+ entsize of 0. FIXME: Does this matter? */
+ if ((abfd->flags & DYNAMIC) != 0 )
+ hdr->sh_entsize = 0;
+ else
+ hdr->sh_entsize = 1;
}
+ else if ((sec->flags & SEC_SMALL_DATA)
+ || strcmp (name, ".sdata") == 0
+ || strcmp (name, ".sbss") == 0
+ || strcmp (name, ".lit4") == 0
+ || strcmp (name, ".lit8") == 0)
+ hdr->sh_flags |= SHF_ALPHA_GPREL;
- /* A little preparation for the loop... */
- disp = symval - info->gp;
+ return TRUE;
+}
- for (urel = irel+1, i = 0; i < count; ++i, ++urel)
+/* Hook called by the linker routine which adds symbols from an object
+ file. We use it to put .comm items in .sbss, and not .bss. */
+
+static bfd_boolean
+elf64_alpha_add_symbol_hook (bfd *abfd, struct bfd_link_info *info,
+ Elf_Internal_Sym *sym,
+ const char **namep ATTRIBUTE_UNUSED,
+ flagword *flagsp ATTRIBUTE_UNUSED,
+ asection **secp, bfd_vma *valp)
+{
+ if (sym->st_shndx == SHN_COMMON
+ && !info->relocatable
+ && sym->st_size <= elf_gp_size (abfd))
{
- unsigned int insn;
- int insn_disp;
- bfd_signed_vma xdisp;
+ /* Common symbols less than or equal to -G nn bytes are
+ automatically put into .sbss. */
- insn = bfd_get_32 (info->abfd, info->contents + urel->r_offset);
+ asection *scomm = bfd_get_section_by_name (abfd, ".scommon");
- switch (urel->r_addend)
+ if (scomm == NULL)
{
- case LITUSE_ALPHA_ADDR:
- default:
- /* This type is really just a placeholder to note that all
- uses cannot be optimized, but to still allow some. */
- all_optimized = FALSE;
- break;
-
- case LITUSE_ALPHA_BASE:
- /* We can always optimize 16-bit displacements. */
-
- /* Extract the displacement from the instruction, sign-extending
- it if necessary, then test whether it is within 16 or 32 bits
- displacement from GP. */
- insn_disp = ((insn & 0xffff) ^ 0x8000) - 0x8000;
+ scomm = bfd_make_section_with_flags (abfd, ".scommon",
+ (SEC_ALLOC
+ | SEC_IS_COMMON
+ | SEC_LINKER_CREATED));
+ if (scomm == NULL)
+ return FALSE;
+ }
- xdisp = disp + insn_disp;
- fits16 = (xdisp >= - (bfd_signed_vma) 0x8000 && xdisp < 0x8000);
- fits32 = (xdisp >= - (bfd_signed_vma) 0x80000000
- && xdisp < 0x7fff8000);
+ *secp = scomm;
+ *valp = sym->st_size;
+ }
- if (fits16)
- {
- /* Take the op code and dest from this insn, take the base
- register from the literal insn. Leave the offset alone. */
- insn = (insn & 0xffe0ffff) | (lit_insn & 0x001f0000);
- urel->r_info = ELF64_R_INFO (ELF64_R_SYM (irel->r_info),
- R_ALPHA_GPREL16);
- urel->r_addend = irel->r_addend;
- info->changed_relocs = TRUE;
+ return TRUE;
+}
- bfd_put_32 (info->abfd, (bfd_vma) insn,
- info->contents + urel->r_offset);
- info->changed_contents = TRUE;
- }
+/* Create the .got section. */
- /* If all mem+byte, we can optimize 32-bit mem displacements. */
- else if (fits32 && !(flags & ~6))
- {
- /* FIXME: sanity check that lit insn Ra is mem insn Rb. */
+static bfd_boolean
+elf64_alpha_create_got_section (bfd *abfd,
+ struct bfd_link_info *info ATTRIBUTE_UNUSED)
+{
+ asection *s;
- irel->r_info = ELF64_R_INFO (ELF64_R_SYM (irel->r_info),
- R_ALPHA_GPRELHIGH);
- lit_insn = (OP_LDAH << 26) | (lit_insn & 0x03ff0000);
- bfd_put_32 (info->abfd, (bfd_vma) lit_insn,
- info->contents + irel->r_offset);
- lit_reused = TRUE;
- info->changed_contents = TRUE;
+ if ((s = bfd_get_section_by_name (abfd, ".got")))
+ {
+ /* Check for a non-linker created .got? */
+ if (alpha_elf_tdata (abfd)->got == NULL)
+ alpha_elf_tdata (abfd)->got = s;
+ return TRUE;
+ }
- urel->r_info = ELF64_R_INFO (ELF64_R_SYM (irel->r_info),
- R_ALPHA_GPRELLOW);
- urel->r_addend = irel->r_addend;
- info->changed_relocs = TRUE;
- }
- else
- all_optimized = FALSE;
- break;
+ s = bfd_make_section_with_flags (abfd, ".got", (SEC_ALLOC | SEC_LOAD
+ | SEC_HAS_CONTENTS
+ | SEC_IN_MEMORY
+ | SEC_LINKER_CREATED));
+ if (s == NULL
+ || !bfd_set_section_alignment (abfd, s, 3))
+ return FALSE;
- case LITUSE_ALPHA_BYTOFF:
- /* We can always optimize byte instructions. */
+ alpha_elf_tdata (abfd)->got = s;
- /* FIXME: sanity check the insn for byte op. Check that the
- literal dest reg is indeed Rb in the byte insn. */
+ return TRUE;
+}
- insn &= ~ (unsigned) 0x001ff000;
- insn |= ((symval & 7) << 13) | 0x1000;
+/* Create all the dynamic sections. */
- urel->r_info = ELF64_R_INFO (0, R_ALPHA_NONE);
- urel->r_addend = 0;
- info->changed_relocs = TRUE;
+static bfd_boolean
+elf64_alpha_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
+{
+ asection *s;
+ struct elf_link_hash_entry *h;
+ struct bfd_link_hash_entry *bh;
- bfd_put_32 (info->abfd, (bfd_vma) insn,
- info->contents + urel->r_offset);
- info->changed_contents = TRUE;
- break;
+ /* We need to create .plt, .rela.plt, .got, and .rela.got sections. */
- case LITUSE_ALPHA_JSR:
- case LITUSE_ALPHA_TLSGD:
- case LITUSE_ALPHA_TLSLDM:
- {
- bfd_vma optdest, org;
- bfd_signed_vma odisp;
+ s = bfd_make_section_with_flags (abfd, ".plt",
+ (SEC_ALLOC | SEC_LOAD
+ | SEC_HAS_CONTENTS
+ | SEC_IN_MEMORY
+ | SEC_LINKER_CREATED
+ | SEC_CODE));
+ if (s == NULL
+ || ! bfd_set_section_alignment (abfd, s, 3))
+ return FALSE;
- /* For undefined weak symbols, we're mostly interested in getting
- rid of the got entry whenever possible, so optimize this to a
- use of the zero register. */
- if (info->h && info->h->root.root.type == bfd_link_hash_undefweak)
- {
- insn |= 31 << 16;
- bfd_put_32 (info->abfd, (bfd_vma) insn,
- info->contents + urel->r_offset);
+ /* Define the symbol _PROCEDURE_LINKAGE_TABLE_ at the start of the
+ .plt section. */
+ bh = NULL;
+ if (! (_bfd_generic_link_add_one_symbol
+ (info, abfd, "_PROCEDURE_LINKAGE_TABLE_", BSF_GLOBAL, s,
+ (bfd_vma) 0, (const char *) NULL, FALSE,
+ get_elf_backend_data (abfd)->collect, &bh)))
+ return FALSE;
+ h = (struct elf_link_hash_entry *) bh;
+ h->def_regular = 1;
+ h->type = STT_OBJECT;
- info->changed_contents = TRUE;
- break;
- }
+ if (info->shared
+ && ! bfd_elf_link_record_dynamic_symbol (info, h))
+ return FALSE;
- /* If not zero, place to jump without needing pv. */
- optdest = elf64_alpha_relax_opt_call (info, symval);
- org = (info->sec->output_section->vma
- + info->sec->output_offset
- + urel->r_offset + 4);
- odisp = (optdest ? optdest : symval) - org;
-
- if (odisp >= -0x400000 && odisp < 0x400000)
- {
- Elf_Internal_Rela *xrel;
-
- /* Preserve branch prediction call stack when possible. */
- if ((insn & INSN_JSR_MASK) == INSN_JSR)
- insn = (OP_BSR << 26) | (insn & 0x03e00000);
- else
- insn = (OP_BR << 26) | (insn & 0x03e00000);
-
- urel->r_info = ELF64_R_INFO (ELF64_R_SYM (irel->r_info),
- R_ALPHA_BRADDR);
- urel->r_addend = irel->r_addend;
-
- if (optdest)
- urel->r_addend += optdest - symval;
- else
- all_optimized = FALSE;
-
- bfd_put_32 (info->abfd, (bfd_vma) insn,
- info->contents + urel->r_offset);
-
- /* Kill any HINT reloc that might exist for this insn. */
- xrel = (elf64_alpha_find_reloc_at_ofs
- (info->relocs, info->relend, urel->r_offset,
- R_ALPHA_HINT));
- if (xrel)
- xrel->r_info = ELF64_R_INFO (0, R_ALPHA_NONE);
-
- info->changed_contents = TRUE;
- info->changed_relocs = TRUE;
- }
- else
- all_optimized = FALSE;
+ s = bfd_make_section_with_flags (abfd, ".rela.plt",
+ (SEC_ALLOC | SEC_LOAD
+ | SEC_HAS_CONTENTS
+ | SEC_IN_MEMORY
+ | SEC_LINKER_CREATED
+ | SEC_READONLY));
+ if (s == NULL
+ || ! bfd_set_section_alignment (abfd, s, 3))
+ return FALSE;
- /* Even if the target is not in range for a direct branch,
- if we share a GP, we can eliminate the gp reload. */
- if (optdest)
- {
- Elf_Internal_Rela *gpdisp
- = (elf64_alpha_find_reloc_at_ofs
- (info->relocs, irelend, urel->r_offset + 4,
- R_ALPHA_GPDISP));
- if (gpdisp)
- {
- bfd_byte *p_ldah = info->contents + gpdisp->r_offset;
- bfd_byte *p_lda = p_ldah + gpdisp->r_addend;
- unsigned int ldah = bfd_get_32 (info->abfd, p_ldah);
- unsigned int lda = bfd_get_32 (info->abfd, p_lda);
+ /* We may or may not have created a .got section for this object, but
+ we definitely havn't done the rest of the work. */
- /* Verify that the instruction is "ldah $29,0($26)".
- Consider a function that ends in a noreturn call,
- and that the next function begins with an ldgp,
- and that by accident there is no padding between.
- In that case the insn would use $27 as the base. */
- if (ldah == 0x27ba0000 && lda == 0x23bd0000)
- {
- bfd_put_32 (info->abfd, (bfd_vma) INSN_UNOP, p_ldah);
- bfd_put_32 (info->abfd, (bfd_vma) INSN_UNOP, p_lda);
+ if (!elf64_alpha_create_got_section (abfd, info))
+ return FALSE;
- gpdisp->r_info = ELF64_R_INFO (0, R_ALPHA_NONE);
- info->changed_contents = TRUE;
- info->changed_relocs = TRUE;
- }
- }
- }
- }
- break;
- }
- }
+ s = bfd_make_section_with_flags (abfd, ".rela.got",
+ (SEC_ALLOC | SEC_LOAD
+ | SEC_HAS_CONTENTS
+ | SEC_IN_MEMORY
+ | SEC_LINKER_CREATED
+ | SEC_READONLY));
+ if (s == NULL
+ || !bfd_set_section_alignment (abfd, s, 3))
+ return FALSE;
- /* If all cases were optimized, we can reduce the use count on this
- got entry by one, possibly eliminating it. */
- if (all_optimized)
- {
- if (--info->gotent->use_count == 0)
- {
- int sz = alpha_got_entry_size (R_ALPHA_LITERAL);
- alpha_elf_tdata (info->gotobj)->total_got_size -= sz;
- if (!info->h)
- alpha_elf_tdata (info->gotobj)->local_got_size -= sz;
- }
+ /* Define the symbol _GLOBAL_OFFSET_TABLE_ at the start of the
+ dynobj's .got section. We don't do this in the linker script
+ because we don't want to define the symbol if we are not creating
+ a global offset table. */
+ bh = NULL;
+ if (!(_bfd_generic_link_add_one_symbol
+ (info, abfd, "_GLOBAL_OFFSET_TABLE_", BSF_GLOBAL,
+ alpha_elf_tdata(abfd)->got, (bfd_vma) 0, (const char *) NULL,
+ FALSE, get_elf_backend_data (abfd)->collect, &bh)))
+ return FALSE;
+ h = (struct elf_link_hash_entry *) bh;
+ h->def_regular = 1;
+ h->type = STT_OBJECT;
- /* If the literal instruction is no longer needed (it may have been
- reused. We can eliminate it. */
- /* ??? For now, I don't want to deal with compacting the section,
- so just nop it out. */
- if (!lit_reused)
- {
- irel->r_info = ELF64_R_INFO (0, R_ALPHA_NONE);
- info->changed_relocs = TRUE;
+ if (info->shared
+ && ! bfd_elf_link_record_dynamic_symbol (info, h))
+ return FALSE;
- bfd_put_32 (info->abfd, (bfd_vma) INSN_UNOP,
- info->contents + irel->r_offset);
- info->changed_contents = TRUE;
- }
+ elf_hash_table (info)->hgot = h;
- return TRUE;
- }
- else
- return elf64_alpha_relax_got_load (info, symval, irel, R_ALPHA_LITERAL);
+ return TRUE;
}
+\f
+/* Read ECOFF debugging information from a .mdebug section into a
+ ecoff_debug_info structure. */
-static bfd_vma
-elf64_alpha_relax_opt_call (info, symval)
- struct alpha_relax_info *info;
- bfd_vma symval;
+static bfd_boolean
+elf64_alpha_read_ecoff_info (bfd *abfd, asection *section,
+ struct ecoff_debug_info *debug)
{
- /* If the function has the same gp, and we can identify that the
- function does not use its function pointer, we can eliminate the
- address load. */
+ HDRR *symhdr;
+ const struct ecoff_debug_swap *swap;
+ char *ext_hdr = NULL;
- /* If the symbol is marked NOPV, we are being told the function never
- needs its procedure value. */
- if ((info->other & STO_ALPHA_STD_GPLOAD) == STO_ALPHA_NOPV)
- return symval;
+ swap = get_elf_backend_data (abfd)->elf_backend_ecoff_debug_swap;
+ memset (debug, 0, sizeof (*debug));
- /* If the symbol is marked STD_GP, we are being told the function does
- a normal ldgp in the first two words. */
- else if ((info->other & STO_ALPHA_STD_GPLOAD) == STO_ALPHA_STD_GPLOAD)
- ;
+ ext_hdr = (char *) bfd_malloc (swap->external_hdr_size);
+ if (ext_hdr == NULL && swap->external_hdr_size != 0)
+ goto error_return;
- /* Otherwise, we may be able to identify a GP load in the first two
- words, which we can then skip. */
- else
- {
- Elf_Internal_Rela *tsec_relocs, *tsec_relend, *tsec_free, *gpdisp;
- bfd_vma ofs;
+ if (! bfd_get_section_contents (abfd, section, ext_hdr, (file_ptr) 0,
+ swap->external_hdr_size))
+ goto error_return;
- /* Load the relocations from the section that the target symbol is in. */
- if (info->sec == info->tsec)
- {
- tsec_relocs = info->relocs;
- tsec_relend = info->relend;
- tsec_free = NULL;
- }
- else
- {
- tsec_relocs = (_bfd_elf_link_read_relocs
- (info->abfd, info->tsec, (PTR) NULL,
- (Elf_Internal_Rela *) NULL,
- info->link_info->keep_memory));
- if (tsec_relocs == NULL)
- return 0;
- tsec_relend = tsec_relocs + info->tsec->reloc_count;
- tsec_free = (info->link_info->keep_memory ? NULL : tsec_relocs);
- }
+ symhdr = &debug->symbolic_header;
+ (*swap->swap_hdr_in) (abfd, ext_hdr, symhdr);
- /* Recover the symbol's offset within the section. */
- ofs = (symval - info->tsec->output_section->vma
- - info->tsec->output_offset);
+ /* The symbolic header contains absolute file offsets and sizes to
+ read. */
+#define READ(ptr, offset, count, size, type) \
+ if (symhdr->count == 0) \
+ debug->ptr = NULL; \
+ else \
+ { \
+ bfd_size_type amt = (bfd_size_type) size * symhdr->count; \
+ debug->ptr = (type) bfd_malloc (amt); \
+ if (debug->ptr == NULL) \
+ goto error_return; \
+ if (bfd_seek (abfd, (file_ptr) symhdr->offset, SEEK_SET) != 0 \
+ || bfd_bread (debug->ptr, amt, abfd) != amt) \
+ goto error_return; \
+ }
- /* Look for a GPDISP reloc. */
- gpdisp = (elf64_alpha_find_reloc_at_ofs
- (tsec_relocs, tsec_relend, ofs, R_ALPHA_GPDISP));
+ READ (line, cbLineOffset, cbLine, sizeof (unsigned char), unsigned char *);
+ READ (external_dnr, cbDnOffset, idnMax, swap->external_dnr_size, PTR);
+ READ (external_pdr, cbPdOffset, ipdMax, swap->external_pdr_size, PTR);
+ READ (external_sym, cbSymOffset, isymMax, swap->external_sym_size, PTR);
+ READ (external_opt, cbOptOffset, ioptMax, swap->external_opt_size, PTR);
+ READ (external_aux, cbAuxOffset, iauxMax, sizeof (union aux_ext),
+ union aux_ext *);
+ READ (ss, cbSsOffset, issMax, sizeof (char), char *);
+ READ (ssext, cbSsExtOffset, issExtMax, sizeof (char), char *);
+ READ (external_fdr, cbFdOffset, ifdMax, swap->external_fdr_size, PTR);
+ READ (external_rfd, cbRfdOffset, crfd, swap->external_rfd_size, PTR);
+ READ (external_ext, cbExtOffset, iextMax, swap->external_ext_size, PTR);
+#undef READ
- if (!gpdisp || gpdisp->r_addend != 4)
- {
- if (tsec_free)
- free (tsec_free);
- return 0;
- }
- if (tsec_free)
- free (tsec_free);
- }
+ debug->fdr = NULL;
- /* We've now determined that we can skip an initial gp load. Verify
- that the call and the target use the same gp. */
- if (info->link_info->hash->creator != info->tsec->owner->xvec
- || info->gotobj != alpha_elf_tdata (info->tsec->owner)->gotobj)
- return 0;
+ return TRUE;
- return symval + 8;
+ error_return:
+ if (ext_hdr != NULL)
+ free (ext_hdr);
+ if (debug->line != NULL)
+ free (debug->line);
+ if (debug->external_dnr != NULL)
+ free (debug->external_dnr);
+ if (debug->external_pdr != NULL)
+ free (debug->external_pdr);
+ if (debug->external_sym != NULL)
+ free (debug->external_sym);
+ if (debug->external_opt != NULL)
+ free (debug->external_opt);
+ if (debug->external_aux != NULL)
+ free (debug->external_aux);
+ if (debug->ss != NULL)
+ free (debug->ss);
+ if (debug->ssext != NULL)
+ free (debug->ssext);
+ if (debug->external_fdr != NULL)
+ free (debug->external_fdr);
+ if (debug->external_rfd != NULL)
+ free (debug->external_rfd);
+ if (debug->external_ext != NULL)
+ free (debug->external_ext);
+ return FALSE;
}
+/* Alpha ELF local labels start with '$'. */
+
static bfd_boolean
-elf64_alpha_relax_got_load (info, symval, irel, r_type)
- struct alpha_relax_info *info;
- bfd_vma symval;
- Elf_Internal_Rela *irel;
- unsigned long r_type;
+elf64_alpha_is_local_label_name (bfd *abfd ATTRIBUTE_UNUSED, const char *name)
{
- unsigned int insn;
- bfd_signed_vma disp;
-
- /* Get the instruction. */
- insn = bfd_get_32 (info->abfd, info->contents + irel->r_offset);
-
- if (insn >> 26 != OP_LDQ)
- {
- reloc_howto_type *howto = elf64_alpha_howto_table + r_type;
- ((*_bfd_error_handler)
- ("%B: %A+0x%lx: warning: %s relocation against unexpected insn",
- info->abfd, info->sec,
- (unsigned long) irel->r_offset, howto->name));
- return TRUE;
- }
-
- /* Can't relax dynamic symbols. */
- if (alpha_elf_dynamic_symbol_p (&info->h->root, info->link_info))
- return TRUE;
-
- /* Can't use local-exec relocations in shared libraries. */
- if (r_type == R_ALPHA_GOTTPREL && info->link_info->shared)
- return TRUE;
-
- if (r_type == R_ALPHA_LITERAL)
- {
- /* Look for nice constant addresses. This includes the not-uncommon
- special case of 0 for undefweak symbols. */
- if ((info->h && info->h->root.root.type == bfd_link_hash_undefweak)
- || (!info->link_info->shared
- && (symval >= (bfd_vma)-0x8000 || symval < 0x8000)))
- {
- disp = 0;
- insn = (OP_LDA << 26) | (insn & (31 << 21)) | (31 << 16);
- insn |= (symval & 0xffff);
- r_type = R_ALPHA_NONE;
- }
- else
- {
- disp = symval - info->gp;
- insn = (OP_LDA << 26) | (insn & 0x03ff0000);
- r_type = R_ALPHA_GPREL16;
- }
- }
- else
- {
- bfd_vma dtp_base, tp_base;
+ return name[0] == '$';
+}
- BFD_ASSERT (elf_hash_table (info->link_info)->tls_sec != NULL);
- dtp_base = alpha_get_dtprel_base (info->link_info);
- tp_base = alpha_get_tprel_base (info->link_info);
- disp = symval - (r_type == R_ALPHA_GOTDTPREL ? dtp_base : tp_base);
+/* Alpha ELF follows MIPS ELF in using a special find_nearest_line
+ routine in order to handle the ECOFF debugging information. We
+ still call this mips_elf_find_line because of the slot
+ find_line_info in elf_obj_tdata is declared that way. */
- insn = (OP_LDA << 26) | (insn & (31 << 21)) | (31 << 16);
+struct mips_elf_find_line
+{
+ struct ecoff_debug_info d;
+ struct ecoff_find_line i;
+};
- switch (r_type)
- {
- case R_ALPHA_GOTDTPREL:
- r_type = R_ALPHA_DTPREL16;
- break;
- case R_ALPHA_GOTTPREL:
- r_type = R_ALPHA_TPREL16;
- break;
- default:
- BFD_ASSERT (0);
- return FALSE;
- }
- }
+static bfd_boolean
+elf64_alpha_find_nearest_line (bfd *abfd, asection *section, asymbol **symbols,
+ bfd_vma offset, const char **filename_ptr,
+ const char **functionname_ptr,
+ unsigned int *line_ptr)
+{
+ asection *msec;
- if (disp < -0x8000 || disp >= 0x8000)
+ if (_bfd_dwarf2_find_nearest_line (abfd, section, symbols, offset,
+ filename_ptr, functionname_ptr,
+ line_ptr, 0,
+ &elf_tdata (abfd)->dwarf2_find_line_info))
return TRUE;
- bfd_put_32 (info->abfd, (bfd_vma) insn, info->contents + irel->r_offset);
- info->changed_contents = TRUE;
-
- /* Reduce the use count on this got entry by one, possibly
- eliminating it. */
- if (--info->gotent->use_count == 0)
+ msec = bfd_get_section_by_name (abfd, ".mdebug");
+ if (msec != NULL)
{
- int sz = alpha_got_entry_size (r_type);
- alpha_elf_tdata (info->gotobj)->total_got_size -= sz;
- if (!info->h)
- alpha_elf_tdata (info->gotobj)->local_got_size -= sz;
- }
-
- /* Smash the existing GOT relocation for its 16-bit immediate pair. */
- irel->r_info = ELF64_R_INFO (ELF64_R_SYM (irel->r_info), r_type);
- info->changed_relocs = TRUE;
-
- /* ??? Search forward through this basic block looking for insns
- that use the target register. Stop after an insn modifying the
- register is seen, or after a branch or call.
-
- Any such memory load insn may be substituted by a load directly
- off the GP. This allows the memory load insn to be issued before
- the calculated GP register would otherwise be ready.
-
- Any such jsr insn can be replaced by a bsr if it is in range.
-
- This would mean that we'd have to _add_ relocations, the pain of
- which gives one pause. */
-
- return TRUE;
-}
+ flagword origflags;
+ struct mips_elf_find_line *fi;
+ const struct ecoff_debug_swap * const swap =
+ get_elf_backend_data (abfd)->elf_backend_ecoff_debug_swap;
-static bfd_boolean
-elf64_alpha_relax_gprelhilo (info, symval, irel, hi)
- struct alpha_relax_info *info;
- bfd_vma symval;
- Elf_Internal_Rela *irel;
- bfd_boolean hi;
-{
- unsigned int insn;
- bfd_signed_vma disp;
- bfd_byte *pos = info->contents + irel->r_offset;
+ /* If we are called during a link, alpha_elf_final_link may have
+ cleared the SEC_HAS_CONTENTS field. We force it back on here
+ if appropriate (which it normally will be). */
+ origflags = msec->flags;
+ if (elf_section_data (msec)->this_hdr.sh_type != SHT_NOBITS)
+ msec->flags |= SEC_HAS_CONTENTS;
- /* ??? This assumes that the compiler doesn't render
+ fi = elf_tdata (abfd)->find_line_info;
+ if (fi == NULL)
+ {
+ bfd_size_type external_fdr_size;
+ char *fraw_src;
+ char *fraw_end;
+ struct fdr *fdr_ptr;
+ bfd_size_type amt = sizeof (struct mips_elf_find_line);
- array[i]
- as
- ldah t, array(gp) !gprelhigh
- s8addl i, t, t
- ldq r, array(t) !gprellow
+ fi = (struct mips_elf_find_line *) bfd_zalloc (abfd, amt);
+ if (fi == NULL)
+ {
+ msec->flags = origflags;
+ return FALSE;
+ }
- which would indeed be the most efficient way to implement this. */
+ if (!elf64_alpha_read_ecoff_info (abfd, msec, &fi->d))
+ {
+ msec->flags = origflags;
+ return FALSE;
+ }
- return TRUE;
+ /* Swap in the FDR information. */
+ amt = fi->d.symbolic_header.ifdMax * sizeof (struct fdr);
+ fi->d.fdr = (struct fdr *) bfd_alloc (abfd, amt);
+ if (fi->d.fdr == NULL)
+ {
+ msec->flags = origflags;
+ return FALSE;
+ }
+ external_fdr_size = swap->external_fdr_size;
+ fdr_ptr = fi->d.fdr;
+ fraw_src = (char *) fi->d.external_fdr;
+ fraw_end = (fraw_src
+ + fi->d.symbolic_header.ifdMax * external_fdr_size);
+ for (; fraw_src < fraw_end; fraw_src += external_fdr_size, fdr_ptr++)
+ (*swap->swap_fdr_in) (abfd, (PTR) fraw_src, fdr_ptr);
- disp = symval - info->gp;
- if (disp < -0x8000 || disp >= 0x8000)
- return TRUE;
+ elf_tdata (abfd)->find_line_info = fi;
- if (hi)
- {
- /* Nop out the high instruction. */
+ /* Note that we don't bother to ever free this information.
+ find_nearest_line is either called all the time, as in
+ objdump -l, so the information should be saved, or it is
+ rarely called, as in ld error messages, so the memory
+ wasted is unimportant. Still, it would probably be a
+ good idea for free_cached_info to throw it away. */
+ }
- bfd_put_32 (info->abfd, (bfd_vma) INSN_UNOP, pos);
- info->changed_contents = TRUE;
+ if (_bfd_ecoff_locate_line (abfd, section, offset, &fi->d, swap,
+ &fi->i, filename_ptr, functionname_ptr,
+ line_ptr))
+ {
+ msec->flags = origflags;
+ return TRUE;
+ }
- irel->r_info = ELF64_R_INFO (0, R_ALPHA_NONE);
- irel->r_addend = 0;
- info->changed_relocs = TRUE;
+ msec->flags = origflags;
}
- else
- {
- /* Adjust the low instruction to reference GP directly. */
- insn = bfd_get_32 (info->abfd, pos);
- insn = (insn & 0xffe00000) | (29 << 16);
- bfd_put_32 (info->abfd, (bfd_vma) insn, pos);
- info->changed_contents = TRUE;
-
- irel->r_info = ELF64_R_INFO (ELF64_R_SYM (irel->r_info),
- R_ALPHA_GPREL16);
- info->changed_relocs = TRUE;
- }
+ /* Fall back on the generic ELF find_nearest_line routine. */
- return TRUE;
+ return _bfd_elf_find_nearest_line (abfd, section, symbols, offset,
+ filename_ptr, functionname_ptr,
+ line_ptr);
}
+\f
+/* Structure used to pass information to alpha_elf_output_extsym. */
-static bfd_boolean
-elf64_alpha_relax_tls_get_addr (info, symval, irel, is_gd)
- struct alpha_relax_info *info;
- bfd_vma symval;
- Elf_Internal_Rela *irel;
- bfd_boolean is_gd;
+struct extsym_info
{
- bfd_byte *pos[5];
- unsigned int insn;
- Elf_Internal_Rela *gpdisp, *hint;
- bfd_boolean dynamic, use_gottprel, pos1_unusable;
- unsigned long new_symndx;
-
- dynamic = alpha_elf_dynamic_symbol_p (&info->h->root, info->link_info);
-
- /* If a TLS symbol is accessed using IE at least once, there is no point
- to use dynamic model for it. */
- if (is_gd && info->h && (info->h->flags & ALPHA_ELF_LINK_HASH_TLS_IE))
- ;
+ bfd *abfd;
+ struct bfd_link_info *info;
+ struct ecoff_debug_info *debug;
+ const struct ecoff_debug_swap *swap;
+ bfd_boolean failed;
+};
- /* If the symbol is local, and we've already committed to DF_STATIC_TLS,
- then we might as well relax to IE. */
- else if (info->link_info->shared && !dynamic
- && (info->link_info->flags & DF_STATIC_TLS))
- ;
+static bfd_boolean
+elf64_alpha_output_extsym (struct alpha_elf_link_hash_entry *h, PTR data)
+{
+ struct extsym_info *einfo = (struct extsym_info *) data;
+ bfd_boolean strip;
+ asection *sec, *output_section;
- /* Otherwise we must be building an executable to do anything. */
- else if (info->link_info->shared)
- return TRUE;
+ if (h->root.root.type == bfd_link_hash_warning)
+ h = (struct alpha_elf_link_hash_entry *) h->root.root.u.i.link;
- /* The TLSGD/TLSLDM relocation must be followed by a LITERAL and
- the matching LITUSE_TLS relocations. */
- if (irel + 2 >= info->relend)
- return TRUE;
- if (ELF64_R_TYPE (irel[1].r_info) != R_ALPHA_LITERAL
- || ELF64_R_TYPE (irel[2].r_info) != R_ALPHA_LITUSE
- || irel[2].r_addend != (is_gd ? LITUSE_ALPHA_TLSGD : LITUSE_ALPHA_TLSLDM))
- return TRUE;
+ if (h->root.indx == -2)
+ strip = FALSE;
+ else if ((h->root.def_dynamic
+ || h->root.ref_dynamic
+ || h->root.root.type == bfd_link_hash_new)
+ && !h->root.def_regular
+ && !h->root.ref_regular)
+ strip = TRUE;
+ else if (einfo->info->strip == strip_all
+ || (einfo->info->strip == strip_some
+ && bfd_hash_lookup (einfo->info->keep_hash,
+ h->root.root.root.string,
+ FALSE, FALSE) == NULL))
+ strip = TRUE;
+ else
+ strip = FALSE;
- /* There must be a GPDISP relocation positioned immediately after the
- LITUSE relocation. */
- gpdisp = elf64_alpha_find_reloc_at_ofs (info->relocs, info->relend,
- irel[2].r_offset + 4, R_ALPHA_GPDISP);
- if (!gpdisp)
+ if (strip)
return TRUE;
- pos[0] = info->contents + irel[0].r_offset;
- pos[1] = info->contents + irel[1].r_offset;
- pos[2] = info->contents + irel[2].r_offset;
- pos[3] = info->contents + gpdisp->r_offset;
- pos[4] = pos[3] + gpdisp->r_addend;
- pos1_unusable = FALSE;
-
- /* Generally, the positions are not allowed to be out of order, lest the
- modified insn sequence have different register lifetimes. We can make
- an exception when pos 1 is adjacent to pos 0. */
- if (pos[1] + 4 == pos[0])
+ if (h->esym.ifd == -2)
{
- bfd_byte *tmp = pos[0];
- pos[0] = pos[1];
- pos[1] = tmp;
- }
- else if (pos[1] < pos[0])
- pos1_unusable = TRUE;
- if (pos[1] >= pos[2] || pos[2] >= pos[3])
- return TRUE;
-
- /* Reduce the use count on the LITERAL relocation. Do this before we
- smash the symndx when we adjust the relocations below. */
- {
- struct alpha_elf_got_entry *lit_gotent;
- struct alpha_elf_link_hash_entry *lit_h;
- unsigned long indx;
-
- BFD_ASSERT (ELF64_R_SYM (irel[1].r_info) >= info->symtab_hdr->sh_info);
- indx = ELF64_R_SYM (irel[1].r_info) - info->symtab_hdr->sh_info;
- lit_h = alpha_elf_sym_hashes (info->abfd)[indx];
-
- while (lit_h->root.root.type == bfd_link_hash_indirect
- || lit_h->root.root.type == bfd_link_hash_warning)
- lit_h = (struct alpha_elf_link_hash_entry *) lit_h->root.root.u.i.link;
-
- for (lit_gotent = lit_h->got_entries; lit_gotent ;
- lit_gotent = lit_gotent->next)
- if (lit_gotent->gotobj == info->gotobj
- && lit_gotent->reloc_type == R_ALPHA_LITERAL
- && lit_gotent->addend == irel[1].r_addend)
- break;
- BFD_ASSERT (lit_gotent);
-
- if (--lit_gotent->use_count == 0)
- {
- int sz = alpha_got_entry_size (R_ALPHA_LITERAL);
- alpha_elf_tdata (info->gotobj)->total_got_size -= sz;
- }
- }
-
- /* Change
-
- lda $16,x($gp) !tlsgd!1
- ldq $27,__tls_get_addr($gp) !literal!1
- jsr $26,($27)__tls_get_addr !lituse_tlsgd!1
- ldah $29,0($26) !gpdisp!2
- lda $29,0($29) !gpdisp!2
- to
- ldq $16,x($gp) !gottprel
- unop
- call_pal rduniq
- addq $16,$0,$0
- unop
- or the first pair to
- lda $16,x($gp) !tprel
- unop
- or
- ldah $16,x($gp) !tprelhi
- lda $16,x($16) !tprello
-
- as appropriate. */
+ h->esym.jmptbl = 0;
+ h->esym.cobol_main = 0;
+ h->esym.weakext = 0;
+ h->esym.reserved = 0;
+ h->esym.ifd = ifdNil;
+ h->esym.asym.value = 0;
+ h->esym.asym.st = stGlobal;
- use_gottprel = FALSE;
- new_symndx = is_gd ? ELF64_R_SYM (irel->r_info) : 0;
- switch (!dynamic && !info->link_info->shared)
- {
- case 1:
- {
- bfd_vma tp_base;
- bfd_signed_vma disp;
+ if (h->root.root.type != bfd_link_hash_defined
+ && h->root.root.type != bfd_link_hash_defweak)
+ h->esym.asym.sc = scAbs;
+ else
+ {
+ const char *name;
- BFD_ASSERT (elf_hash_table (info->link_info)->tls_sec != NULL);
- tp_base = alpha_get_tprel_base (info->link_info);
- disp = symval - tp_base;
+ sec = h->root.root.u.def.section;
+ output_section = sec->output_section;
- if (disp >= -0x8000 && disp < 0x8000)
- {
- insn = (OP_LDA << 26) | (16 << 21) | (31 << 16);
- bfd_put_32 (info->abfd, (bfd_vma) insn, pos[0]);
- bfd_put_32 (info->abfd, (bfd_vma) INSN_UNOP, pos[1]);
+ /* When making a shared library and symbol h is the one from
+ the another shared library, OUTPUT_SECTION may be null. */
+ if (output_section == NULL)
+ h->esym.asym.sc = scUndefined;
+ else
+ {
+ name = bfd_section_name (output_section->owner, output_section);
- irel[0].r_offset = pos[0] - info->contents;
- irel[0].r_info = ELF64_R_INFO (new_symndx, R_ALPHA_TPREL16);
- irel[1].r_info = ELF64_R_INFO (0, R_ALPHA_NONE);
- break;
- }
- else if (disp >= -(bfd_signed_vma) 0x80000000
- && disp < (bfd_signed_vma) 0x7fff8000
- && !pos1_unusable)
- {
- insn = (OP_LDAH << 26) | (16 << 21) | (31 << 16);
- bfd_put_32 (info->abfd, (bfd_vma) insn, pos[0]);
- insn = (OP_LDA << 26) | (16 << 21) | (16 << 16);
- bfd_put_32 (info->abfd, (bfd_vma) insn, pos[1]);
+ if (strcmp (name, ".text") == 0)
+ h->esym.asym.sc = scText;
+ else if (strcmp (name, ".data") == 0)
+ h->esym.asym.sc = scData;
+ else if (strcmp (name, ".sdata") == 0)
+ h->esym.asym.sc = scSData;
+ else if (strcmp (name, ".rodata") == 0
+ || strcmp (name, ".rdata") == 0)
+ h->esym.asym.sc = scRData;
+ else if (strcmp (name, ".bss") == 0)
+ h->esym.asym.sc = scBss;
+ else if (strcmp (name, ".sbss") == 0)
+ h->esym.asym.sc = scSBss;
+ else if (strcmp (name, ".init") == 0)
+ h->esym.asym.sc = scInit;
+ else if (strcmp (name, ".fini") == 0)
+ h->esym.asym.sc = scFini;
+ else
+ h->esym.asym.sc = scAbs;
+ }
+ }
- irel[0].r_offset = pos[0] - info->contents;
- irel[0].r_info = ELF64_R_INFO (new_symndx, R_ALPHA_TPRELHI);
- irel[1].r_offset = pos[1] - info->contents;
- irel[1].r_info = ELF64_R_INFO (new_symndx, R_ALPHA_TPRELLO);
- break;
- }
- }
- /* FALLTHRU */
+ h->esym.asym.reserved = 0;
+ h->esym.asym.index = indexNil;
+ }
- default:
- use_gottprel = TRUE;
+ if (h->root.root.type == bfd_link_hash_common)
+ h->esym.asym.value = h->root.root.u.c.size;
+ else if (h->root.root.type == bfd_link_hash_defined
+ || h->root.root.type == bfd_link_hash_defweak)
+ {
+ if (h->esym.asym.sc == scCommon)
+ h->esym.asym.sc = scBss;
+ else if (h->esym.asym.sc == scSCommon)
+ h->esym.asym.sc = scSBss;
- insn = (OP_LDQ << 26) | (16 << 21) | (29 << 16);
- bfd_put_32 (info->abfd, (bfd_vma) insn, pos[0]);
- bfd_put_32 (info->abfd, (bfd_vma) INSN_UNOP, pos[1]);
+ sec = h->root.root.u.def.section;
+ output_section = sec->output_section;
+ if (output_section != NULL)
+ h->esym.asym.value = (h->root.root.u.def.value
+ + sec->output_offset
+ + output_section->vma);
+ else
+ h->esym.asym.value = 0;
+ }
+ else if (h->root.needs_plt)
+ {
+ /* Set type and value for a symbol with a function stub. */
+ h->esym.asym.st = stProc;
+ sec = bfd_get_section_by_name (einfo->abfd, ".plt");
+ if (sec == NULL)
+ h->esym.asym.value = 0;
+ else
+ {
+ output_section = sec->output_section;
+ if (output_section != NULL)
+ h->esym.asym.value = (h->root.plt.offset
+ + sec->output_offset
+ + output_section->vma);
+ else
+ h->esym.asym.value = 0;
+ }
+ }
- irel[0].r_offset = pos[0] - info->contents;
- irel[0].r_info = ELF64_R_INFO (new_symndx, R_ALPHA_GOTTPREL);
- irel[1].r_info = ELF64_R_INFO (0, R_ALPHA_NONE);
- break;
+ if (! bfd_ecoff_debug_one_external (einfo->abfd, einfo->debug, einfo->swap,
+ h->root.root.root.string,
+ &h->esym))
+ {
+ einfo->failed = TRUE;
+ return FALSE;
}
- bfd_put_32 (info->abfd, (bfd_vma) INSN_RDUNIQ, pos[2]);
+ return TRUE;
+}
+\f
+/* Search for and possibly create a got entry. */
- insn = INSN_ADDQ | (16 << 21) | (0 << 16) | (0 << 0);
- bfd_put_32 (info->abfd, (bfd_vma) insn, pos[3]);
+static struct alpha_elf_got_entry *
+get_got_entry (bfd *abfd, struct alpha_elf_link_hash_entry *h,
+ unsigned long r_type, unsigned long r_symndx,
+ bfd_vma r_addend)
+{
+ struct alpha_elf_got_entry *gotent;
+ struct alpha_elf_got_entry **slot;
- bfd_put_32 (info->abfd, (bfd_vma) INSN_UNOP, pos[4]);
+ if (h)
+ slot = &h->got_entries;
+ else
+ {
+ /* This is a local .got entry -- record for merge. */
- irel[2].r_info = ELF64_R_INFO (0, R_ALPHA_NONE);
- gpdisp->r_info = ELF64_R_INFO (0, R_ALPHA_NONE);
+ struct alpha_elf_got_entry **local_got_entries;
- hint = elf64_alpha_find_reloc_at_ofs (info->relocs, info->relend,
- irel[2].r_offset, R_ALPHA_HINT);
- if (hint)
- hint->r_info = ELF64_R_INFO (0, R_ALPHA_NONE);
+ local_got_entries = alpha_elf_tdata(abfd)->local_got_entries;
+ if (!local_got_entries)
+ {
+ bfd_size_type size;
+ Elf_Internal_Shdr *symtab_hdr;
- info->changed_contents = TRUE;
- info->changed_relocs = TRUE;
+ symtab_hdr = &elf_tdata(abfd)->symtab_hdr;
+ size = symtab_hdr->sh_info;
+ size *= sizeof (struct alpha_elf_got_entry *);
- /* Reduce the use count on the TLSGD/TLSLDM relocation. */
- if (--info->gotent->use_count == 0)
- {
- int sz = alpha_got_entry_size (info->gotent->reloc_type);
- alpha_elf_tdata (info->gotobj)->total_got_size -= sz;
- if (!info->h)
- alpha_elf_tdata (info->gotobj)->local_got_size -= sz;
+ local_got_entries
+ = (struct alpha_elf_got_entry **) bfd_zalloc (abfd, size);
+ if (!local_got_entries)
+ return NULL;
+
+ alpha_elf_tdata (abfd)->local_got_entries = local_got_entries;
+ }
+
+ slot = &local_got_entries[r_symndx];
}
- /* If we've switched to a GOTTPREL relocation, increment the reference
- count on that got entry. */
- if (use_gottprel)
+ for (gotent = *slot; gotent ; gotent = gotent->next)
+ if (gotent->gotobj == abfd
+ && gotent->reloc_type == r_type
+ && gotent->addend == r_addend)
+ break;
+
+ if (!gotent)
{
- struct alpha_elf_got_entry *tprel_gotent;
+ int entry_size;
+ bfd_size_type amt;
- for (tprel_gotent = *info->first_gotent; tprel_gotent ;
- tprel_gotent = tprel_gotent->next)
- if (tprel_gotent->gotobj == info->gotobj
- && tprel_gotent->reloc_type == R_ALPHA_GOTTPREL
- && tprel_gotent->addend == irel->r_addend)
- break;
- if (tprel_gotent)
- tprel_gotent->use_count++;
- else
- {
- if (info->gotent->use_count == 0)
- tprel_gotent = info->gotent;
- else
- {
- tprel_gotent = (struct alpha_elf_got_entry *)
- bfd_alloc (info->abfd, sizeof (struct alpha_elf_got_entry));
- if (!tprel_gotent)
- return FALSE;
+ amt = sizeof (struct alpha_elf_got_entry);
+ gotent = (struct alpha_elf_got_entry *) bfd_alloc (abfd, amt);
+ if (!gotent)
+ return NULL;
- tprel_gotent->next = *info->first_gotent;
- *info->first_gotent = tprel_gotent;
+ gotent->gotobj = abfd;
+ gotent->addend = r_addend;
+ gotent->got_offset = -1;
+ gotent->use_count = 1;
+ gotent->reloc_type = r_type;
+ gotent->reloc_done = 0;
+ gotent->reloc_xlated = 0;
- tprel_gotent->gotobj = info->gotobj;
- tprel_gotent->addend = irel->r_addend;
- tprel_gotent->got_offset = -1;
- tprel_gotent->reloc_done = 0;
- tprel_gotent->reloc_xlated = 0;
- }
+ gotent->next = *slot;
+ *slot = gotent;
- tprel_gotent->use_count = 1;
- tprel_gotent->reloc_type = R_ALPHA_GOTTPREL;
- }
+ entry_size = alpha_got_entry_size (r_type);
+ alpha_elf_tdata (abfd)->total_got_size += entry_size;
+ if (!h)
+ alpha_elf_tdata(abfd)->local_got_size += entry_size;
}
+ else
+ gotent->use_count += 1;
- return TRUE;
+ return gotent;
}
+/* Handle dynamic relocations when doing an Alpha ELF link. */
+
static bfd_boolean
-elf64_alpha_relax_section (abfd, sec, link_info, again)
- bfd *abfd;
- asection *sec;
- struct bfd_link_info *link_info;
- bfd_boolean *again;
+elf64_alpha_check_relocs (bfd *abfd, struct bfd_link_info *info,
+ asection *sec, const Elf_Internal_Rela *relocs)
{
+ bfd *dynobj;
+ asection *sreloc;
+ const char *rel_sec_name;
Elf_Internal_Shdr *symtab_hdr;
- Elf_Internal_Rela *internal_relocs;
- Elf_Internal_Rela *irel, *irelend;
- Elf_Internal_Sym *isymbuf = NULL;
- struct alpha_elf_got_entry **local_got_entries;
- struct alpha_relax_info info;
+ struct alpha_elf_link_hash_entry **sym_hashes;
+ const Elf_Internal_Rela *rel, *relend;
+ bfd_boolean got_created;
+ bfd_size_type amt;
- /* We are not currently changing any sizes, so only one pass. */
- *again = FALSE;
+ if (info->relocatable)
+ return TRUE;
- if (link_info->relocatable
- || ((sec->flags & (SEC_CODE | SEC_RELOC | SEC_ALLOC))
- != (SEC_CODE | SEC_RELOC | SEC_ALLOC))
- || sec->reloc_count == 0)
+ /* Don't do anything special with non-loaded, non-alloced sections.
+ In particular, any relocs in such sections should not affect GOT
+ and PLT reference counting (ie. we don't allow them to create GOT
+ or PLT entries), there's no possibility or desire to optimize TLS
+ relocs, and there's not much point in propagating relocs to shared
+ libs that the dynamic linker won't relocate. */
+ if ((sec->flags & SEC_ALLOC) == 0)
return TRUE;
- symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
- local_got_entries = alpha_elf_tdata(abfd)->local_got_entries;
+ dynobj = elf_hash_table(info)->dynobj;
+ if (dynobj == NULL)
+ elf_hash_table(info)->dynobj = dynobj = abfd;
- /* Load the relocations for this section. */
- internal_relocs = (_bfd_elf_link_read_relocs
- (abfd, sec, (PTR) NULL, (Elf_Internal_Rela *) NULL,
- link_info->keep_memory));
- if (internal_relocs == NULL)
- return FALSE;
+ sreloc = NULL;
+ rel_sec_name = NULL;
+ symtab_hdr = &elf_tdata(abfd)->symtab_hdr;
+ sym_hashes = alpha_elf_sym_hashes(abfd);
+ got_created = FALSE;
+
+ relend = relocs + sec->reloc_count;
+ for (rel = relocs; rel < relend; ++rel)
+ {
+ enum {
+ NEED_GOT = 1,
+ NEED_GOT_ENTRY = 2,
+ NEED_DYNREL = 4
+ };
+
+ unsigned long r_symndx, r_type;
+ struct alpha_elf_link_hash_entry *h;
+ unsigned int gotent_flags;
+ bfd_boolean maybe_dynamic;
+ unsigned int need;
+ bfd_vma addend;
+
+ r_symndx = ELF64_R_SYM (rel->r_info);
+ if (r_symndx < symtab_hdr->sh_info)
+ h = NULL;
+ else
+ {
+ h = sym_hashes[r_symndx - symtab_hdr->sh_info];
- memset(&info, 0, sizeof (info));
- info.abfd = abfd;
- info.sec = sec;
- info.link_info = link_info;
- info.symtab_hdr = symtab_hdr;
- info.relocs = internal_relocs;
- info.relend = irelend = internal_relocs + sec->reloc_count;
+ while (h->root.root.type == bfd_link_hash_indirect
+ || h->root.root.type == bfd_link_hash_warning)
+ h = (struct alpha_elf_link_hash_entry *)h->root.root.u.i.link;
- /* Find the GP for this object. Do not store the result back via
- _bfd_set_gp_value, since this could change again before final. */
- info.gotobj = alpha_elf_tdata (abfd)->gotobj;
- if (info.gotobj)
- {
- asection *sgot = alpha_elf_tdata (info.gotobj)->got;
- info.gp = (sgot->output_section->vma
- + sgot->output_offset
- + 0x8000);
- }
+ h->root.ref_regular = 1;
+ }
- /* Get the section contents. */
- if (elf_section_data (sec)->this_hdr.contents != NULL)
- info.contents = elf_section_data (sec)->this_hdr.contents;
- else
- {
- if (!bfd_malloc_and_get_section (abfd, sec, &info.contents))
- goto error_return;
- }
+ /* We can only get preliminary data on whether a symbol is
+ locally or externally defined, as not all of the input files
+ have yet been processed. Do something with what we know, as
+ this may help reduce memory usage and processing time later. */
+ maybe_dynamic = FALSE;
+ if (h && ((info->shared
+ && (!info->symbolic
+ || info->unresolved_syms_in_shared_libs == RM_IGNORE))
+ || !h->root.def_regular
+ || h->root.root.type == bfd_link_hash_defweak))
+ maybe_dynamic = TRUE;
- for (irel = internal_relocs; irel < irelend; irel++)
- {
- bfd_vma symval;
- struct alpha_elf_got_entry *gotent;
- unsigned long r_type = ELF64_R_TYPE (irel->r_info);
- unsigned long r_symndx = ELF64_R_SYM (irel->r_info);
+ need = 0;
+ gotent_flags = 0;
+ r_type = ELF64_R_TYPE (rel->r_info);
+ addend = rel->r_addend;
- /* Early exit for unhandled or unrelaxable relocations. */
switch (r_type)
{
case R_ALPHA_LITERAL:
+ need = NEED_GOT | NEED_GOT_ENTRY;
+
+ /* Remember how this literal is used from its LITUSEs.
+ This will be important when it comes to decide if we can
+ create a .plt entry for a function symbol. */
+ while (++rel < relend && ELF64_R_TYPE (rel->r_info) == R_ALPHA_LITUSE)
+ if (rel->r_addend >= 1 && rel->r_addend <= 5)
+ gotent_flags |= 1 << rel->r_addend;
+ --rel;
+
+ /* No LITUSEs -- presumably the address is used somehow. */
+ if (gotent_flags == 0)
+ gotent_flags = ALPHA_ELF_LINK_HASH_LU_ADDR;
+ break;
+
+ case R_ALPHA_GPDISP:
+ case R_ALPHA_GPREL16:
+ case R_ALPHA_GPREL32:
case R_ALPHA_GPRELHIGH:
case R_ALPHA_GPRELLOW:
- case R_ALPHA_GOTDTPREL:
- case R_ALPHA_GOTTPREL:
- case R_ALPHA_TLSGD:
+ case R_ALPHA_BRSGP:
+ need = NEED_GOT;
+ break;
+
+ case R_ALPHA_REFLONG:
+ case R_ALPHA_REFQUAD:
+ if (info->shared || maybe_dynamic)
+ need = NEED_DYNREL;
break;
case R_ALPHA_TLSLDM:
/* The symbol for a TLSLDM reloc is ignored. Collapse the
- reloc to the 0 symbol so that they all match. */
+ reloc to the 0 symbol so that they all match. */
r_symndx = 0;
+ h = 0;
+ maybe_dynamic = FALSE;
+ /* FALLTHRU */
+
+ case R_ALPHA_TLSGD:
+ case R_ALPHA_GOTDTPREL:
+ need = NEED_GOT | NEED_GOT_ENTRY;
break;
- default:
- continue;
+ case R_ALPHA_GOTTPREL:
+ need = NEED_GOT | NEED_GOT_ENTRY;
+ gotent_flags = ALPHA_ELF_LINK_HASH_TLS_IE;
+ if (info->shared)
+ info->flags |= DF_STATIC_TLS;
+ break;
+
+ case R_ALPHA_TPREL64:
+ if (info->shared || maybe_dynamic)
+ need = NEED_DYNREL;
+ if (info->shared)
+ info->flags |= DF_STATIC_TLS;
+ break;
}
- /* Get the value of the symbol referred to by the reloc. */
- if (r_symndx < symtab_hdr->sh_info)
+ if (need & NEED_GOT)
{
- /* A local symbol. */
- Elf_Internal_Sym *isym;
-
- /* Read this BFD's local symbols. */
- if (isymbuf == NULL)
+ if (!got_created)
{
- isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
- if (isymbuf == NULL)
- isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
- symtab_hdr->sh_info, 0,
- NULL, NULL, NULL);
- if (isymbuf == NULL)
- goto error_return;
- }
-
- isym = isymbuf + r_symndx;
+ if (!elf64_alpha_create_got_section (abfd, info))
+ return FALSE;
- /* Given the symbol for a TLSLDM reloc is ignored, this also
- means forcing the symbol value to the tp base. */
- if (r_type == R_ALPHA_TLSLDM)
- {
- info.tsec = bfd_abs_section_ptr;
- symval = alpha_get_tprel_base (info.link_info);
- }
- else
- {
- symval = isym->st_value;
- if (isym->st_shndx == SHN_UNDEF)
- continue;
- else if (isym->st_shndx == SHN_ABS)
- info.tsec = bfd_abs_section_ptr;
- else if (isym->st_shndx == SHN_COMMON)
- info.tsec = bfd_com_section_ptr;
- else
- info.tsec = bfd_section_from_elf_index (abfd, isym->st_shndx);
- }
+ /* Make sure the object's gotobj is set to itself so
+ that we default to every object with its own .got.
+ We'll merge .gots later once we've collected each
+ object's info. */
+ alpha_elf_tdata(abfd)->gotobj = abfd;
- info.h = NULL;
- info.other = isym->st_other;
- if (local_got_entries)
- info.first_gotent = &local_got_entries[r_symndx];
- else
- {
- info.first_gotent = &info.gotent;
- info.gotent = NULL;
+ got_created = 1;
}
}
- else
- {
- unsigned long indx;
- struct alpha_elf_link_hash_entry *h;
-
- indx = r_symndx - symtab_hdr->sh_info;
- h = alpha_elf_sym_hashes (abfd)[indx];
- BFD_ASSERT (h != NULL);
- while (h->root.root.type == bfd_link_hash_indirect
- || h->root.root.type == bfd_link_hash_warning)
- h = (struct alpha_elf_link_hash_entry *)h->root.root.u.i.link;
+ if (need & NEED_GOT_ENTRY)
+ {
+ struct alpha_elf_got_entry *gotent;
- /* If the symbol is undefined, we can't do anything with it. */
- if (h->root.root.type == bfd_link_hash_undefined)
- continue;
+ gotent = get_got_entry (abfd, h, r_type, r_symndx, addend);
+ if (!gotent)
+ return FALSE;
- /* If the symbol isn't defined in the current module,
- again we can't do anything. */
- if (h->root.root.type == bfd_link_hash_undefweak)
- {
- info.tsec = bfd_abs_section_ptr;
- symval = 0;
- }
- else if (!h->root.def_regular)
- {
- /* Except for TLSGD relocs, which can sometimes be
- relaxed to GOTTPREL relocs. */
- if (r_type != R_ALPHA_TLSGD)
- continue;
- info.tsec = bfd_abs_section_ptr;
- symval = 0;
- }
- else
+ if (gotent_flags)
{
- info.tsec = h->root.root.u.def.section;
- symval = h->root.root.u.def.value;
- }
+ gotent->flags |= gotent_flags;
+ if (h)
+ {
+ gotent_flags |= h->flags;
+ h->flags = gotent_flags;
- info.h = h;
- info.other = h->root.other;
- info.first_gotent = &h->got_entries;
+ /* Make a guess as to whether a .plt entry is needed. */
+ if ((gotent_flags & ALPHA_ELF_LINK_HASH_LU_FUNC)
+ && !(gotent_flags & ~ALPHA_ELF_LINK_HASH_LU_FUNC))
+ h->root.needs_plt = 1;
+ else
+ h->root.needs_plt = 0;
+ }
+ }
}
- /* Search for the got entry to be used by this relocation. */
- for (gotent = *info.first_gotent; gotent ; gotent = gotent->next)
- if (gotent->gotobj == info.gotobj
- && gotent->reloc_type == r_type
- && gotent->addend == irel->r_addend)
- break;
- info.gotent = gotent;
-
- symval += info.tsec->output_section->vma + info.tsec->output_offset;
- symval += irel->r_addend;
-
- switch (r_type)
+ if (need & NEED_DYNREL)
{
- case R_ALPHA_LITERAL:
- BFD_ASSERT(info.gotent != NULL);
-
- /* If there exist LITUSE relocations immediately following, this
- opens up all sorts of interesting optimizations, because we
- now know every location that this address load is used. */
- if (irel+1 < irelend
- && ELF64_R_TYPE (irel[1].r_info) == R_ALPHA_LITUSE)
+ if (rel_sec_name == NULL)
{
- if (!elf64_alpha_relax_with_lituse (&info, symval, irel))
- goto error_return;
+ rel_sec_name = (bfd_elf_string_from_elf_section
+ (abfd, elf_elfheader(abfd)->e_shstrndx,
+ elf_section_data(sec)->rel_hdr.sh_name));
+ if (rel_sec_name == NULL)
+ return FALSE;
+
+ BFD_ASSERT (strncmp (rel_sec_name, ".rela", 5) == 0
+ && strcmp (bfd_get_section_name (abfd, sec),
+ rel_sec_name+5) == 0);
}
- else
+
+ /* We need to create the section here now whether we eventually
+ use it or not so that it gets mapped to an output section by
+ the linker. If not used, we'll kill it in
+ size_dynamic_sections. */
+ if (sreloc == NULL)
{
- if (!elf64_alpha_relax_got_load (&info, symval, irel, r_type))
- goto error_return;
+ sreloc = bfd_get_section_by_name (dynobj, rel_sec_name);
+ if (sreloc == NULL)
+ {
+ flagword flags;
+
+ flags = (SEC_HAS_CONTENTS | SEC_IN_MEMORY
+ | SEC_LINKER_CREATED | SEC_READONLY);
+ if (sec->flags & SEC_ALLOC)
+ flags |= SEC_ALLOC | SEC_LOAD;
+ sreloc = bfd_make_section_with_flags (dynobj,
+ rel_sec_name,
+ flags);
+ if (sreloc == NULL
+ || !bfd_set_section_alignment (dynobj, sreloc, 3))
+ return FALSE;
+ }
}
- break;
- case R_ALPHA_GPRELHIGH:
- case R_ALPHA_GPRELLOW:
- if (!elf64_alpha_relax_gprelhilo (&info, symval, irel,
- r_type == R_ALPHA_GPRELHIGH))
- goto error_return;
- break;
+ if (h)
+ {
+ /* Since we havn't seen all of the input symbols yet, we
+ don't know whether we'll actually need a dynamic relocation
+ entry for this reloc. So make a record of it. Once we
+ find out if this thing needs dynamic relocation we'll
+ expand the relocation sections by the appropriate amount. */
- case R_ALPHA_GOTDTPREL:
- case R_ALPHA_GOTTPREL:
- BFD_ASSERT(info.gotent != NULL);
- if (!elf64_alpha_relax_got_load (&info, symval, irel, r_type))
- goto error_return;
- break;
+ struct alpha_elf_reloc_entry *rent;
- case R_ALPHA_TLSGD:
- case R_ALPHA_TLSLDM:
- BFD_ASSERT(info.gotent != NULL);
- if (!elf64_alpha_relax_tls_get_addr (&info, symval, irel,
- r_type == R_ALPHA_TLSGD))
- goto error_return;
- break;
- }
- }
+ for (rent = h->reloc_entries; rent; rent = rent->next)
+ if (rent->rtype == r_type && rent->srel == sreloc)
+ break;
- if (!elf64_alpha_size_plt_section (link_info))
- return FALSE;
- if (!elf64_alpha_size_got_sections (link_info))
- return FALSE;
- if (!elf64_alpha_size_rela_got_section (link_info))
- return FALSE;
+ if (!rent)
+ {
+ amt = sizeof (struct alpha_elf_reloc_entry);
+ rent = (struct alpha_elf_reloc_entry *) bfd_alloc (abfd, amt);
+ if (!rent)
+ return FALSE;
- if (isymbuf != NULL
- && symtab_hdr->contents != (unsigned char *) isymbuf)
- {
- if (!link_info->keep_memory)
- free (isymbuf);
- else
- {
- /* Cache the symbols for elf_link_input_bfd. */
- symtab_hdr->contents = (unsigned char *) isymbuf;
- }
- }
+ rent->srel = sreloc;
+ rent->rtype = r_type;
+ rent->count = 1;
+ rent->reltext = (sec->flags & SEC_READONLY) != 0;
- if (info.contents != NULL
- && elf_section_data (sec)->this_hdr.contents != info.contents)
- {
- if (!info.changed_contents && !link_info->keep_memory)
- free (info.contents);
- else
- {
- /* Cache the section contents for elf_link_input_bfd. */
- elf_section_data (sec)->this_hdr.contents = info.contents;
+ rent->next = h->reloc_entries;
+ h->reloc_entries = rent;
+ }
+ else
+ rent->count++;
+ }
+ else if (info->shared)
+ {
+ /* If this is a shared library, and the section is to be
+ loaded into memory, we need a RELATIVE reloc. */
+ sreloc->size += sizeof (Elf64_External_Rela);
+ if (sec->flags & SEC_READONLY)
+ info->flags |= DF_TEXTREL;
+ }
}
}
- if (elf_section_data (sec)->relocs != internal_relocs)
- {
- if (!info.changed_relocs)
- free (internal_relocs);
- else
- elf_section_data (sec)->relocs = internal_relocs;
- }
-
- *again = info.changed_contents || info.changed_relocs;
-
return TRUE;
-
- error_return:
- if (isymbuf != NULL
- && symtab_hdr->contents != (unsigned char *) isymbuf)
- free (isymbuf);
- if (info.contents != NULL
- && elf_section_data (sec)->this_hdr.contents != info.contents)
- free (info.contents);
- if (internal_relocs != NULL
- && elf_section_data (sec)->relocs != internal_relocs)
- free (internal_relocs);
- return FALSE;
}
-\f
-/* PLT/GOT Stuff */
-#define PLT_HEADER_SIZE 32
-#define PLT_HEADER_WORD1 (bfd_vma) 0xc3600000 /* br $27,.+4 */
-#define PLT_HEADER_WORD2 (bfd_vma) 0xa77b000c /* ldq $27,12($27) */
-#define PLT_HEADER_WORD3 (bfd_vma) 0x47ff041f /* nop */
-#define PLT_HEADER_WORD4 (bfd_vma) 0x6b7b0000 /* jmp $27,($27) */
-#define PLT_ENTRY_SIZE 12
-#define PLT_ENTRY_WORD1 0xc3800000 /* br $28, plt0 */
-#define PLT_ENTRY_WORD2 0
-#define PLT_ENTRY_WORD3 0
-
-#define MAX_GOT_SIZE (64*1024)
-
-#define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so"
-\f
-/* Handle an Alpha specific section when reading an object file. This
- is called when bfd_section_from_shdr finds a section with an unknown
- type.
- FIXME: We need to handle the SHF_ALPHA_GPREL flag, but I'm not sure
- how to. */
+/* Adjust a symbol defined by a dynamic object and referenced by a
+ regular object. The current definition is in some section of the
+ dynamic object, but we're not including those sections. We have to
+ change the definition to something the rest of the link can
+ understand. */
static bfd_boolean
-elf64_alpha_section_from_shdr (bfd *abfd,
- Elf_Internal_Shdr *hdr,
- const char *name,
- int shindex)
+elf64_alpha_adjust_dynamic_symbol (struct bfd_link_info *info,
+ struct elf_link_hash_entry *h)
{
- asection *newsect;
+ bfd *dynobj;
+ asection *s;
+ struct alpha_elf_link_hash_entry *ah;
- /* There ought to be a place to keep ELF backend specific flags, but
- at the moment there isn't one. We just keep track of the
- sections by their name, instead. Fortunately, the ABI gives
- suggested names for all the MIPS specific sections, so we will
- probably get away with this. */
- switch (hdr->sh_type)
- {
- case SHT_ALPHA_DEBUG:
- if (strcmp (name, ".mdebug") != 0)
- return FALSE;
- break;
- default:
- return FALSE;
- }
+ dynobj = elf_hash_table(info)->dynobj;
+ ah = (struct alpha_elf_link_hash_entry *)h;
- if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
- return FALSE;
- newsect = hdr->bfd_section;
+ /* Now that we've seen all of the input symbols, finalize our decision
+ about whether this symbol should get a .plt entry. */
- if (hdr->sh_type == SHT_ALPHA_DEBUG)
+ if (alpha_elf_dynamic_symbol_p (h, info)
+ && ((h->type == STT_FUNC
+ && !(ah->flags & ALPHA_ELF_LINK_HASH_LU_ADDR))
+ || (h->type == STT_NOTYPE
+ && (ah->flags & ALPHA_ELF_LINK_HASH_LU_FUNC)
+ && !(ah->flags & ~ALPHA_ELF_LINK_HASH_LU_FUNC)))
+ /* Don't prevent otherwise valid programs from linking by attempting
+ to create a new .got entry somewhere. A Correct Solution would be
+ to add a new .got section to a new object file and let it be merged
+ somewhere later. But for now don't bother. */
+ && ah->got_entries)
{
- if (! bfd_set_section_flags (abfd, newsect,
- (bfd_get_section_flags (abfd, newsect)
- | SEC_DEBUGGING)))
- return FALSE;
- }
-
- return TRUE;
-}
+ h->needs_plt = 1;
-/* Convert Alpha specific section flags to bfd internal section flags. */
+ s = bfd_get_section_by_name(dynobj, ".plt");
+ if (!s && !elf64_alpha_create_dynamic_sections (dynobj, info))
+ return FALSE;
-static bfd_boolean
-elf64_alpha_section_flags (flags, hdr)
- flagword *flags;
- const Elf_Internal_Shdr *hdr;
-{
- if (hdr->sh_flags & SHF_ALPHA_GPREL)
- *flags |= SEC_SMALL_DATA;
+ /* The first bit of the .plt is reserved. */
+ if (s->size == 0)
+ s->size = PLT_HEADER_SIZE;
- return TRUE;
-}
+ h->plt.offset = s->size;
+ s->size += PLT_ENTRY_SIZE;
-/* Set the correct type for an Alpha ELF section. We do this by the
- section name, which is a hack, but ought to work. */
+ /* If this symbol is not defined in a regular file, and we are not
+ generating a shared library, then set the symbol to the location
+ in the .plt. This is required to make function pointers compare
+ equal between the normal executable and the shared library. */
+ if (! info->shared
+ && h->root.type != bfd_link_hash_defweak)
+ {
+ ah->plt_old_section = h->root.u.def.section;
+ ah->plt_old_value = h->root.u.def.value;
+ ah->flags |= ALPHA_ELF_LINK_HASH_PLT_LOC;
+ h->root.u.def.section = s;
+ h->root.u.def.value = h->plt.offset;
+ }
-static bfd_boolean
-elf64_alpha_fake_sections (abfd, hdr, sec)
- bfd *abfd;
- Elf_Internal_Shdr *hdr;
- asection *sec;
-{
- register const char *name;
+ /* We also need a JMP_SLOT entry in the .rela.plt section. */
+ s = bfd_get_section_by_name (dynobj, ".rela.plt");
+ BFD_ASSERT (s != NULL);
+ s->size += sizeof (Elf64_External_Rela);
- name = bfd_get_section_name (abfd, sec);
+ return TRUE;
+ }
+ else
+ h->needs_plt = 0;
- if (strcmp (name, ".mdebug") == 0)
+ /* If this is a weak symbol, and there is a real definition, the
+ processor independent code will have arranged for us to see the
+ real definition first, and we can just use the same value. */
+ if (h->u.weakdef != NULL)
{
- hdr->sh_type = SHT_ALPHA_DEBUG;
- /* In a shared object on Irix 5.3, the .mdebug section has an
- entsize of 0. FIXME: Does this matter? */
- if ((abfd->flags & DYNAMIC) != 0 )
- hdr->sh_entsize = 0;
- else
- hdr->sh_entsize = 1;
+ BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
+ || h->u.weakdef->root.type == bfd_link_hash_defweak);
+ h->root.u.def.section = h->u.weakdef->root.u.def.section;
+ h->root.u.def.value = h->u.weakdef->root.u.def.value;
+ return TRUE;
}
- else if ((sec->flags & SEC_SMALL_DATA)
- || strcmp (name, ".sdata") == 0
- || strcmp (name, ".sbss") == 0
- || strcmp (name, ".lit4") == 0
- || strcmp (name, ".lit8") == 0)
- hdr->sh_flags |= SHF_ALPHA_GPREL;
+
+ /* This is a reference to a symbol defined by a dynamic object which
+ is not a function. The Alpha, since it uses .got entries for all
+ symbols even in regular objects, does not need the hackery of a
+ .dynbss section and COPY dynamic relocations. */
return TRUE;
}
-/* Hook called by the linker routine which adds symbols from an object
- file. We use it to put .comm items in .sbss, and not .bss. */
+/* Symbol versioning can create new symbols, and make our old symbols
+ indirect to the new ones. Consolidate the got and reloc information
+ in these situations. */
static bfd_boolean
-elf64_alpha_add_symbol_hook (abfd, info, sym, namep, flagsp, secp, valp)
- bfd *abfd;
- struct bfd_link_info *info;
- Elf_Internal_Sym *sym;
- const char **namep ATTRIBUTE_UNUSED;
- flagword *flagsp ATTRIBUTE_UNUSED;
- asection **secp;
- bfd_vma *valp;
+elf64_alpha_merge_ind_symbols (struct alpha_elf_link_hash_entry *hi,
+ PTR dummy ATTRIBUTE_UNUSED)
{
- if (sym->st_shndx == SHN_COMMON
- && !info->relocatable
- && sym->st_size <= elf_gp_size (abfd))
- {
- /* Common symbols less than or equal to -G nn bytes are
- automatically put into .sbss. */
+ struct alpha_elf_link_hash_entry *hs;
- asection *scomm = bfd_get_section_by_name (abfd, ".scommon");
+ if (hi->root.root.type != bfd_link_hash_indirect)
+ return TRUE;
+ hs = hi;
+ do {
+ hs = (struct alpha_elf_link_hash_entry *)hs->root.root.u.i.link;
+ } while (hs->root.root.type == bfd_link_hash_indirect);
- if (scomm == NULL)
+ /* Merge the flags. Whee. */
+
+ hs->flags |= hi->flags;
+
+ /* Merge the .got entries. Cannibalize the old symbol's list in
+ doing so, since we don't need it anymore. */
+
+ if (hs->got_entries == NULL)
+ hs->got_entries = hi->got_entries;
+ else
+ {
+ struct alpha_elf_got_entry *gi, *gs, *gin, *gsh;
+
+ gsh = hs->got_entries;
+ for (gi = hi->got_entries; gi ; gi = gin)
{
- scomm = bfd_make_section_with_flags (abfd, ".scommon",
- (SEC_ALLOC
- | SEC_IS_COMMON
- | SEC_LINKER_CREATED));
- if (scomm == NULL)
- return FALSE;
+ gin = gi->next;
+ for (gs = gsh; gs ; gs = gs->next)
+ if (gi->gotobj == gs->gotobj
+ && gi->reloc_type == gs->reloc_type
+ && gi->addend == gs->addend)
+ {
+ gi->use_count += gs->use_count;
+ goto got_found;
+ }
+ gi->next = hs->got_entries;
+ hs->got_entries = gi;
+ got_found:;
}
+ }
+ hi->got_entries = NULL;
- *secp = scomm;
- *valp = sym->st_size;
+ /* And similar for the reloc entries. */
+
+ if (hs->reloc_entries == NULL)
+ hs->reloc_entries = hi->reloc_entries;
+ else
+ {
+ struct alpha_elf_reloc_entry *ri, *rs, *rin, *rsh;
+
+ rsh = hs->reloc_entries;
+ for (ri = hi->reloc_entries; ri ; ri = rin)
+ {
+ rin = ri->next;
+ for (rs = rsh; rs ; rs = rs->next)
+ if (ri->rtype == rs->rtype && ri->srel == rs->srel)
+ {
+ rs->count += ri->count;
+ goto found_reloc;
+ }
+ ri->next = hs->reloc_entries;
+ hs->reloc_entries = ri;
+ found_reloc:;
+ }
}
+ hi->reloc_entries = NULL;
return TRUE;
}
-/* Create the .got section. */
+/* Is it possible to merge two object file's .got tables? */
static bfd_boolean
-elf64_alpha_create_got_section(abfd, info)
- bfd *abfd;
- struct bfd_link_info *info ATTRIBUTE_UNUSED;
+elf64_alpha_can_merge_gots (bfd *a, bfd *b)
{
- asection *s;
+ int total = alpha_elf_tdata (a)->total_got_size;
+ bfd *bsub;
- if ((s = bfd_get_section_by_name (abfd, ".got")))
- {
- /* Check for a non-linker created .got? */
- if (alpha_elf_tdata (abfd)->got == NULL)
- alpha_elf_tdata (abfd)->got = s;
- return TRUE;
- }
+ /* Trivial quick fallout test. */
+ if (total + alpha_elf_tdata (b)->total_got_size <= MAX_GOT_SIZE)
+ return TRUE;
- s = bfd_make_section_with_flags (abfd, ".got", (SEC_ALLOC | SEC_LOAD
- | SEC_HAS_CONTENTS
- | SEC_IN_MEMORY
- | SEC_LINKER_CREATED));
- if (s == NULL
- || !bfd_set_section_alignment (abfd, s, 3))
+ /* By their nature, local .got entries cannot be merged. */
+ if ((total += alpha_elf_tdata (b)->local_got_size) > MAX_GOT_SIZE)
return FALSE;
- alpha_elf_tdata (abfd)->got = s;
+ /* Failing the common trivial comparison, we must effectively
+ perform the merge. Not actually performing the merge means that
+ we don't have to store undo information in case we fail. */
+ for (bsub = b; bsub ; bsub = alpha_elf_tdata (bsub)->in_got_link_next)
+ {
+ struct alpha_elf_link_hash_entry **hashes = alpha_elf_sym_hashes (bsub);
+ Elf_Internal_Shdr *symtab_hdr = &elf_tdata (bsub)->symtab_hdr;
+ int i, n;
+
+ n = NUM_SHDR_ENTRIES (symtab_hdr) - symtab_hdr->sh_info;
+ for (i = 0; i < n; ++i)
+ {
+ struct alpha_elf_got_entry *ae, *be;
+ struct alpha_elf_link_hash_entry *h;
+
+ h = hashes[i];
+ while (h->root.root.type == bfd_link_hash_indirect
+ || h->root.root.type == bfd_link_hash_warning)
+ h = (struct alpha_elf_link_hash_entry *)h->root.root.u.i.link;
+
+ for (be = h->got_entries; be ; be = be->next)
+ {
+ if (be->use_count == 0)
+ continue;
+ if (be->gotobj != b)
+ continue;
+
+ for (ae = h->got_entries; ae ; ae = ae->next)
+ if (ae->gotobj == a
+ && ae->reloc_type == be->reloc_type
+ && ae->addend == be->addend)
+ goto global_found;
+
+ total += alpha_got_entry_size (be->reloc_type);
+ if (total > MAX_GOT_SIZE)
+ return FALSE;
+ global_found:;
+ }
+ }
+ }
return TRUE;
}
-/* Create all the dynamic sections. */
+/* Actually merge two .got tables. */
-static bfd_boolean
-elf64_alpha_create_dynamic_sections (abfd, info)
- bfd *abfd;
- struct bfd_link_info *info;
+static void
+elf64_alpha_merge_gots (bfd *a, bfd *b)
{
- asection *s;
- struct elf_link_hash_entry *h;
- struct bfd_link_hash_entry *bh;
+ int total = alpha_elf_tdata (a)->total_got_size;
+ bfd *bsub;
- /* We need to create .plt, .rela.plt, .got, and .rela.got sections. */
+ /* Remember local expansion. */
+ {
+ int e = alpha_elf_tdata (b)->local_got_size;
+ total += e;
+ alpha_elf_tdata (a)->local_got_size += e;
+ }
- s = bfd_make_section_with_flags (abfd, ".plt",
- (SEC_ALLOC | SEC_LOAD
- | SEC_HAS_CONTENTS
- | SEC_IN_MEMORY
- | SEC_LINKER_CREATED
- | SEC_CODE));
- if (s == NULL
- || ! bfd_set_section_alignment (abfd, s, 3))
- return FALSE;
+ for (bsub = b; bsub ; bsub = alpha_elf_tdata (bsub)->in_got_link_next)
+ {
+ struct alpha_elf_got_entry **local_got_entries;
+ struct alpha_elf_link_hash_entry **hashes;
+ Elf_Internal_Shdr *symtab_hdr;
+ int i, n;
- /* Define the symbol _PROCEDURE_LINKAGE_TABLE_ at the start of the
- .plt section. */
- bh = NULL;
- if (! (_bfd_generic_link_add_one_symbol
- (info, abfd, "_PROCEDURE_LINKAGE_TABLE_", BSF_GLOBAL, s,
- (bfd_vma) 0, (const char *) NULL, FALSE,
- get_elf_backend_data (abfd)->collect, &bh)))
- return FALSE;
- h = (struct elf_link_hash_entry *) bh;
- h->def_regular = 1;
- h->type = STT_OBJECT;
+ /* Let the local .got entries know they are part of a new subsegment. */
+ local_got_entries = alpha_elf_tdata (bsub)->local_got_entries;
+ if (local_got_entries)
+ {
+ n = elf_tdata (bsub)->symtab_hdr.sh_info;
+ for (i = 0; i < n; ++i)
+ {
+ struct alpha_elf_got_entry *ent;
+ for (ent = local_got_entries[i]; ent; ent = ent->next)
+ ent->gotobj = a;
+ }
+ }
- if (info->shared
- && ! bfd_elf_link_record_dynamic_symbol (info, h))
- return FALSE;
+ /* Merge the global .got entries. */
+ hashes = alpha_elf_sym_hashes (bsub);
+ symtab_hdr = &elf_tdata (bsub)->symtab_hdr;
- s = bfd_make_section_with_flags (abfd, ".rela.plt",
- (SEC_ALLOC | SEC_LOAD
- | SEC_HAS_CONTENTS
- | SEC_IN_MEMORY
- | SEC_LINKER_CREATED
- | SEC_READONLY));
- if (s == NULL
- || ! bfd_set_section_alignment (abfd, s, 3))
- return FALSE;
+ n = NUM_SHDR_ENTRIES (symtab_hdr) - symtab_hdr->sh_info;
+ for (i = 0; i < n; ++i)
+ {
+ struct alpha_elf_got_entry *ae, *be, **pbe, **start;
+ struct alpha_elf_link_hash_entry *h;
- /* We may or may not have created a .got section for this object, but
- we definitely havn't done the rest of the work. */
+ h = hashes[i];
+ while (h->root.root.type == bfd_link_hash_indirect
+ || h->root.root.type == bfd_link_hash_warning)
+ h = (struct alpha_elf_link_hash_entry *)h->root.root.u.i.link;
- if (!elf64_alpha_create_got_section (abfd, info))
- return FALSE;
+ pbe = start = &h->got_entries;
+ while ((be = *pbe) != NULL)
+ {
+ if (be->use_count == 0)
+ {
+ *pbe = be->next;
+ memset (be, 0xa5, sizeof (*be));
+ goto kill;
+ }
+ if (be->gotobj != b)
+ goto next;
+
+ for (ae = *start; ae ; ae = ae->next)
+ if (ae->gotobj == a
+ && ae->reloc_type == be->reloc_type
+ && ae->addend == be->addend)
+ {
+ ae->flags |= be->flags;
+ ae->use_count += be->use_count;
+ *pbe = be->next;
+ memset (be, 0xa5, sizeof (*be));
+ goto kill;
+ }
+ be->gotobj = a;
+ total += alpha_got_entry_size (be->reloc_type);
- s = bfd_make_section_with_flags (abfd, ".rela.got",
- (SEC_ALLOC | SEC_LOAD
- | SEC_HAS_CONTENTS
- | SEC_IN_MEMORY
- | SEC_LINKER_CREATED
- | SEC_READONLY));
- if (s == NULL
- || !bfd_set_section_alignment (abfd, s, 3))
- return FALSE;
+ next:;
+ pbe = &be->next;
+ kill:;
+ }
+ }
- /* Define the symbol _GLOBAL_OFFSET_TABLE_ at the start of the
- dynobj's .got section. We don't do this in the linker script
- because we don't want to define the symbol if we are not creating
- a global offset table. */
- bh = NULL;
- if (!(_bfd_generic_link_add_one_symbol
- (info, abfd, "_GLOBAL_OFFSET_TABLE_", BSF_GLOBAL,
- alpha_elf_tdata(abfd)->got, (bfd_vma) 0, (const char *) NULL,
- FALSE, get_elf_backend_data (abfd)->collect, &bh)))
- return FALSE;
- h = (struct elf_link_hash_entry *) bh;
- h->def_regular = 1;
- h->type = STT_OBJECT;
+ alpha_elf_tdata (bsub)->gotobj = a;
+ }
+ alpha_elf_tdata (a)->total_got_size = total;
- if (info->shared
- && ! bfd_elf_link_record_dynamic_symbol (info, h))
- return FALSE;
+ /* Merge the two in_got chains. */
+ {
+ bfd *next;
- elf_hash_table (info)->hgot = h;
+ bsub = a;
+ while ((next = alpha_elf_tdata (bsub)->in_got_link_next) != NULL)
+ bsub = next;
- return TRUE;
+ alpha_elf_tdata (bsub)->in_got_link_next = b;
+ }
}
-\f
-/* Read ECOFF debugging information from a .mdebug section into a
- ecoff_debug_info structure. */
+
+/* Calculate the offsets for the got entries. */
static bfd_boolean
-elf64_alpha_read_ecoff_info (abfd, section, debug)
- bfd *abfd;
- asection *section;
- struct ecoff_debug_info *debug;
+elf64_alpha_calc_got_offsets_for_symbol (struct alpha_elf_link_hash_entry *h,
+ PTR arg ATTRIBUTE_UNUSED)
{
- HDRR *symhdr;
- const struct ecoff_debug_swap *swap;
- char *ext_hdr = NULL;
+ bfd_boolean result = TRUE;
+ struct alpha_elf_got_entry *gotent;
- swap = get_elf_backend_data (abfd)->elf_backend_ecoff_debug_swap;
- memset (debug, 0, sizeof (*debug));
+ if (h->root.root.type == bfd_link_hash_warning)
+ h = (struct alpha_elf_link_hash_entry *) h->root.root.u.i.link;
- ext_hdr = (char *) bfd_malloc (swap->external_hdr_size);
- if (ext_hdr == NULL && swap->external_hdr_size != 0)
- goto error_return;
+ for (gotent = h->got_entries; gotent; gotent = gotent->next)
+ if (gotent->use_count > 0)
+ {
+ struct alpha_elf_obj_tdata *td;
+ bfd_size_type *plge;
- if (! bfd_get_section_contents (abfd, section, ext_hdr, (file_ptr) 0,
- swap->external_hdr_size))
- goto error_return;
+ td = alpha_elf_tdata (gotent->gotobj);
+ if (td == NULL)
+ {
+ _bfd_error_handler (_("Symbol %s has no GOT subsection for offset 0x%x"),
+ h->root.root.root.string, gotent->got_offset);
+ result = FALSE;
+ continue;
+ }
+ plge = &td->got->size;
+ gotent->got_offset = *plge;
+ *plge += alpha_got_entry_size (gotent->reloc_type);
+ }
- symhdr = &debug->symbolic_header;
- (*swap->swap_hdr_in) (abfd, ext_hdr, symhdr);
+ return result;
+}
- /* The symbolic header contains absolute file offsets and sizes to
- read. */
-#define READ(ptr, offset, count, size, type) \
- if (symhdr->count == 0) \
- debug->ptr = NULL; \
- else \
- { \
- bfd_size_type amt = (bfd_size_type) size * symhdr->count; \
- debug->ptr = (type) bfd_malloc (amt); \
- if (debug->ptr == NULL) \
- goto error_return; \
- if (bfd_seek (abfd, (file_ptr) symhdr->offset, SEEK_SET) != 0 \
- || bfd_bread (debug->ptr, amt, abfd) != amt) \
- goto error_return; \
- }
+static void
+elf64_alpha_calc_got_offsets (struct bfd_link_info *info)
+{
+ bfd *i, *got_list = alpha_elf_hash_table(info)->got_list;
- READ (line, cbLineOffset, cbLine, sizeof (unsigned char), unsigned char *);
- READ (external_dnr, cbDnOffset, idnMax, swap->external_dnr_size, PTR);
- READ (external_pdr, cbPdOffset, ipdMax, swap->external_pdr_size, PTR);
- READ (external_sym, cbSymOffset, isymMax, swap->external_sym_size, PTR);
- READ (external_opt, cbOptOffset, ioptMax, swap->external_opt_size, PTR);
- READ (external_aux, cbAuxOffset, iauxMax, sizeof (union aux_ext),
- union aux_ext *);
- READ (ss, cbSsOffset, issMax, sizeof (char), char *);
- READ (ssext, cbSsExtOffset, issExtMax, sizeof (char), char *);
- READ (external_fdr, cbFdOffset, ifdMax, swap->external_fdr_size, PTR);
- READ (external_rfd, cbRfdOffset, crfd, swap->external_rfd_size, PTR);
- READ (external_ext, cbExtOffset, iextMax, swap->external_ext_size, PTR);
-#undef READ
+ /* First, zero out the .got sizes, as we may be recalculating the
+ .got after optimizing it. */
+ for (i = got_list; i ; i = alpha_elf_tdata(i)->got_link_next)
+ alpha_elf_tdata(i)->got->size = 0;
- debug->fdr = NULL;
+ /* Next, fill in the offsets for all the global entries. */
+ alpha_elf_link_hash_traverse (alpha_elf_hash_table (info),
+ elf64_alpha_calc_got_offsets_for_symbol,
+ NULL);
- return TRUE;
+ /* Finally, fill in the offsets for the local entries. */
+ for (i = got_list; i ; i = alpha_elf_tdata(i)->got_link_next)
+ {
+ bfd_size_type got_offset = alpha_elf_tdata(i)->got->size;
+ bfd *j;
- error_return:
- if (ext_hdr != NULL)
- free (ext_hdr);
- if (debug->line != NULL)
- free (debug->line);
- if (debug->external_dnr != NULL)
- free (debug->external_dnr);
- if (debug->external_pdr != NULL)
- free (debug->external_pdr);
- if (debug->external_sym != NULL)
- free (debug->external_sym);
- if (debug->external_opt != NULL)
- free (debug->external_opt);
- if (debug->external_aux != NULL)
- free (debug->external_aux);
- if (debug->ss != NULL)
- free (debug->ss);
- if (debug->ssext != NULL)
- free (debug->ssext);
- if (debug->external_fdr != NULL)
- free (debug->external_fdr);
- if (debug->external_rfd != NULL)
- free (debug->external_rfd);
- if (debug->external_ext != NULL)
- free (debug->external_ext);
- return FALSE;
-}
+ for (j = i; j ; j = alpha_elf_tdata(j)->in_got_link_next)
+ {
+ struct alpha_elf_got_entry **local_got_entries, *gotent;
+ int k, n;
-/* Alpha ELF local labels start with '$'. */
+ local_got_entries = alpha_elf_tdata(j)->local_got_entries;
+ if (!local_got_entries)
+ continue;
-static bfd_boolean
-elf64_alpha_is_local_label_name (abfd, name)
- bfd *abfd ATTRIBUTE_UNUSED;
- const char *name;
-{
- return name[0] == '$';
-}
+ for (k = 0, n = elf_tdata(j)->symtab_hdr.sh_info; k < n; ++k)
+ for (gotent = local_got_entries[k]; gotent; gotent = gotent->next)
+ if (gotent->use_count > 0)
+ {
+ gotent->got_offset = got_offset;
+ got_offset += alpha_got_entry_size (gotent->reloc_type);
+ }
+ }
-/* Alpha ELF follows MIPS ELF in using a special find_nearest_line
- routine in order to handle the ECOFF debugging information. We
- still call this mips_elf_find_line because of the slot
- find_line_info in elf_obj_tdata is declared that way. */
+ alpha_elf_tdata(i)->got->size = got_offset;
+ }
+}
-struct mips_elf_find_line
-{
- struct ecoff_debug_info d;
- struct ecoff_find_line i;
-};
+/* Constructs the gots. */
static bfd_boolean
-elf64_alpha_find_nearest_line (abfd, section, symbols, offset, filename_ptr,
- functionname_ptr, line_ptr)
- bfd *abfd;
- asection *section;
- asymbol **symbols;
- bfd_vma offset;
- const char **filename_ptr;
- const char **functionname_ptr;
- unsigned int *line_ptr;
+elf64_alpha_size_got_sections (struct bfd_link_info *info)
{
- asection *msec;
+ bfd *i, *got_list, *cur_got_obj = NULL;
+ int something_changed = 0;
- if (_bfd_dwarf2_find_nearest_line (abfd, section, symbols, offset,
- filename_ptr, functionname_ptr,
- line_ptr, 0,
- &elf_tdata (abfd)->dwarf2_find_line_info))
- return TRUE;
+ got_list = alpha_elf_hash_table (info)->got_list;
- msec = bfd_get_section_by_name (abfd, ".mdebug");
- if (msec != NULL)
+ /* On the first time through, pretend we have an existing got list
+ consisting of all of the input files. */
+ if (got_list == NULL)
{
- flagword origflags;
- struct mips_elf_find_line *fi;
- const struct ecoff_debug_swap * const swap =
- get_elf_backend_data (abfd)->elf_backend_ecoff_debug_swap;
-
- /* If we are called during a link, alpha_elf_final_link may have
- cleared the SEC_HAS_CONTENTS field. We force it back on here
- if appropriate (which it normally will be). */
- origflags = msec->flags;
- if (elf_section_data (msec)->this_hdr.sh_type != SHT_NOBITS)
- msec->flags |= SEC_HAS_CONTENTS;
-
- fi = elf_tdata (abfd)->find_line_info;
- if (fi == NULL)
+ for (i = info->input_bfds; i ; i = i->link_next)
{
- bfd_size_type external_fdr_size;
- char *fraw_src;
- char *fraw_end;
- struct fdr *fdr_ptr;
- bfd_size_type amt = sizeof (struct mips_elf_find_line);
-
- fi = (struct mips_elf_find_line *) bfd_zalloc (abfd, amt);
- if (fi == NULL)
- {
- msec->flags = origflags;
- return FALSE;
- }
+ bfd *this_got = alpha_elf_tdata (i)->gotobj;
+ if (this_got == NULL)
+ continue;
- if (!elf64_alpha_read_ecoff_info (abfd, msec, &fi->d))
- {
- msec->flags = origflags;
- return FALSE;
- }
+ /* We are assuming no merging has yet occurred. */
+ BFD_ASSERT (this_got == i);
- /* Swap in the FDR information. */
- amt = fi->d.symbolic_header.ifdMax * sizeof (struct fdr);
- fi->d.fdr = (struct fdr *) bfd_alloc (abfd, amt);
- if (fi->d.fdr == NULL)
+ if (alpha_elf_tdata (this_got)->total_got_size > MAX_GOT_SIZE)
{
- msec->flags = origflags;
+ /* Yikes! A single object file has too many entries. */
+ (*_bfd_error_handler)
+ (_("%B: .got subsegment exceeds 64K (size %d)"),
+ i, alpha_elf_tdata (this_got)->total_got_size);
return FALSE;
}
- external_fdr_size = swap->external_fdr_size;
- fdr_ptr = fi->d.fdr;
- fraw_src = (char *) fi->d.external_fdr;
- fraw_end = (fraw_src
- + fi->d.symbolic_header.ifdMax * external_fdr_size);
- for (; fraw_src < fraw_end; fraw_src += external_fdr_size, fdr_ptr++)
- (*swap->swap_fdr_in) (abfd, (PTR) fraw_src, fdr_ptr);
- elf_tdata (abfd)->find_line_info = fi;
-
- /* Note that we don't bother to ever free this information.
- find_nearest_line is either called all the time, as in
- objdump -l, so the information should be saved, or it is
- rarely called, as in ld error messages, so the memory
- wasted is unimportant. Still, it would probably be a
- good idea for free_cached_info to throw it away. */
+ if (got_list == NULL)
+ got_list = this_got;
+ else
+ alpha_elf_tdata(cur_got_obj)->got_link_next = this_got;
+ cur_got_obj = this_got;
}
- if (_bfd_ecoff_locate_line (abfd, section, offset, &fi->d, swap,
- &fi->i, filename_ptr, functionname_ptr,
- line_ptr))
+ /* Strange degenerate case of no got references. */
+ if (got_list == NULL)
+ return TRUE;
+
+ alpha_elf_hash_table (info)->got_list = got_list;
+
+ /* Force got offsets to be recalculated. */
+ something_changed = 1;
+ }
+
+ cur_got_obj = got_list;
+ i = alpha_elf_tdata(cur_got_obj)->got_link_next;
+ while (i != NULL)
+ {
+ if (elf64_alpha_can_merge_gots (cur_got_obj, i))
{
- msec->flags = origflags;
- return TRUE;
- }
+ elf64_alpha_merge_gots (cur_got_obj, i);
- msec->flags = origflags;
+ alpha_elf_tdata(i)->got->size = 0;
+ i = alpha_elf_tdata(i)->got_link_next;
+ alpha_elf_tdata(cur_got_obj)->got_link_next = i;
+
+ something_changed = 1;
+ }
+ else
+ {
+ cur_got_obj = i;
+ i = alpha_elf_tdata(i)->got_link_next;
+ }
}
- /* Fall back on the generic ELF find_nearest_line routine. */
+ /* Once the gots have been merged, fill in the got offsets for
+ everything therein. */
+ if (1 || something_changed)
+ elf64_alpha_calc_got_offsets (info);
- return _bfd_elf_find_nearest_line (abfd, section, symbols, offset,
- filename_ptr, functionname_ptr,
- line_ptr);
+ return TRUE;
}
-\f
-/* Structure used to pass information to alpha_elf_output_extsym. */
-
-struct extsym_info
-{
- bfd *abfd;
- struct bfd_link_info *info;
- struct ecoff_debug_info *debug;
- const struct ecoff_debug_swap *swap;
- bfd_boolean failed;
-};
static bfd_boolean
-elf64_alpha_output_extsym (h, data)
- struct alpha_elf_link_hash_entry *h;
- PTR data;
+elf64_alpha_size_plt_section_1 (struct alpha_elf_link_hash_entry *h, PTR data)
{
- struct extsym_info *einfo = (struct extsym_info *) data;
- bfd_boolean strip;
- asection *sec, *output_section;
+ asection *splt = (asection *) data;
+ struct alpha_elf_got_entry *gotent;
- if (h->root.root.type == bfd_link_hash_warning)
- h = (struct alpha_elf_link_hash_entry *) h->root.root.u.i.link;
+ /* If we didn't need an entry before, we still don't. */
+ if (!h->root.needs_plt)
+ return TRUE;
- if (h->root.indx == -2)
- strip = FALSE;
- else if ((h->root.def_dynamic
- || h->root.ref_dynamic
- || h->root.root.type == bfd_link_hash_new)
- && !h->root.def_regular
- && !h->root.ref_regular)
- strip = TRUE;
- else if (einfo->info->strip == strip_all
- || (einfo->info->strip == strip_some
- && bfd_hash_lookup (einfo->info->keep_hash,
- h->root.root.root.string,
- FALSE, FALSE) == NULL))
- strip = TRUE;
+ /* There must still be a LITERAL got entry for the function. */
+ for (gotent = h->got_entries; gotent ; gotent = gotent->next)
+ if (gotent->reloc_type == R_ALPHA_LITERAL
+ && gotent->use_count > 0)
+ break;
+
+ /* If there is, reset the PLT offset. If not, there's no longer
+ a need for the PLT entry. */
+ if (gotent)
+ {
+ if (splt->size == 0)
+ splt->size = PLT_HEADER_SIZE;
+ h->root.plt.offset = splt->size;
+ splt->size += PLT_ENTRY_SIZE;
+ }
else
- strip = FALSE;
+ {
+ h->root.needs_plt = 0;
+ h->root.plt.offset = -1;
- if (strip)
+ /* Undo the definition frobbing begun in adjust_dynamic_symbol. */
+ if (h->flags & ALPHA_ELF_LINK_HASH_PLT_LOC)
+ {
+ h->root.root.u.def.section = h->plt_old_section;
+ h->root.root.u.def.value = h->plt_old_value;
+ h->flags &= ~ALPHA_ELF_LINK_HASH_PLT_LOC;
+ }
+ }
+
+ return TRUE;
+}
+
+/* Called from relax_section to rebuild the PLT in light of
+ potential changes in the function's status. */
+
+static bfd_boolean
+elf64_alpha_size_plt_section (struct bfd_link_info *info)
+{
+ asection *splt, *spltrel;
+ unsigned long entries;
+ bfd *dynobj;
+
+ dynobj = elf_hash_table(info)->dynobj;
+ splt = bfd_get_section_by_name(dynobj, ".plt");
+ if (splt == NULL)
return TRUE;
- if (h->esym.ifd == -2)
- {
- h->esym.jmptbl = 0;
- h->esym.cobol_main = 0;
- h->esym.weakext = 0;
- h->esym.reserved = 0;
- h->esym.ifd = ifdNil;
- h->esym.asym.value = 0;
- h->esym.asym.st = stGlobal;
+ splt->size = 0;
- if (h->root.root.type != bfd_link_hash_defined
- && h->root.root.type != bfd_link_hash_defweak)
- h->esym.asym.sc = scAbs;
- else
- {
- const char *name;
+ alpha_elf_link_hash_traverse (alpha_elf_hash_table (info),
+ elf64_alpha_size_plt_section_1, splt);
- sec = h->root.root.u.def.section;
- output_section = sec->output_section;
+ /* Every plt entry requires a JMP_SLOT relocation. */
+ spltrel = bfd_get_section_by_name (dynobj, ".rela.plt");
+ if (splt->size)
+ entries = (splt->size - PLT_HEADER_SIZE) / PLT_ENTRY_SIZE;
+ else
+ entries = 0;
+ spltrel->size = entries * sizeof (Elf64_External_Rela);
- /* When making a shared library and symbol h is the one from
- the another shared library, OUTPUT_SECTION may be null. */
- if (output_section == NULL)
- h->esym.asym.sc = scUndefined;
- else
- {
- name = bfd_section_name (output_section->owner, output_section);
+ return TRUE;
+}
- if (strcmp (name, ".text") == 0)
- h->esym.asym.sc = scText;
- else if (strcmp (name, ".data") == 0)
- h->esym.asym.sc = scData;
- else if (strcmp (name, ".sdata") == 0)
- h->esym.asym.sc = scSData;
- else if (strcmp (name, ".rodata") == 0
- || strcmp (name, ".rdata") == 0)
- h->esym.asym.sc = scRData;
- else if (strcmp (name, ".bss") == 0)
- h->esym.asym.sc = scBss;
- else if (strcmp (name, ".sbss") == 0)
- h->esym.asym.sc = scSBss;
- else if (strcmp (name, ".init") == 0)
- h->esym.asym.sc = scInit;
- else if (strcmp (name, ".fini") == 0)
- h->esym.asym.sc = scFini;
- else
- h->esym.asym.sc = scAbs;
- }
- }
+static bfd_boolean
+elf64_alpha_always_size_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
+ struct bfd_link_info *info)
+{
+ bfd *i;
- h->esym.asym.reserved = 0;
- h->esym.asym.index = indexNil;
- }
+ if (info->relocatable)
+ return TRUE;
- if (h->root.root.type == bfd_link_hash_common)
- h->esym.asym.value = h->root.root.u.c.size;
- else if (h->root.root.type == bfd_link_hash_defined
- || h->root.root.type == bfd_link_hash_defweak)
- {
- if (h->esym.asym.sc == scCommon)
- h->esym.asym.sc = scBss;
- else if (h->esym.asym.sc == scSCommon)
- h->esym.asym.sc = scSBss;
+ /* First, take care of the indirect symbols created by versioning. */
+ alpha_elf_link_hash_traverse (alpha_elf_hash_table (info),
+ elf64_alpha_merge_ind_symbols,
+ NULL);
- sec = h->root.root.u.def.section;
- output_section = sec->output_section;
- if (output_section != NULL)
- h->esym.asym.value = (h->root.root.u.def.value
- + sec->output_offset
- + output_section->vma);
- else
- h->esym.asym.value = 0;
- }
- else if (h->root.needs_plt)
- {
- /* Set type and value for a symbol with a function stub. */
- h->esym.asym.st = stProc;
- sec = bfd_get_section_by_name (einfo->abfd, ".plt");
- if (sec == NULL)
- h->esym.asym.value = 0;
- else
- {
- output_section = sec->output_section;
- if (output_section != NULL)
- h->esym.asym.value = (h->root.plt.offset
- + sec->output_offset
- + output_section->vma);
- else
- h->esym.asym.value = 0;
- }
- }
+ if (!elf64_alpha_size_got_sections (info))
+ return FALSE;
- if (! bfd_ecoff_debug_one_external (einfo->abfd, einfo->debug, einfo->swap,
- h->root.root.root.string,
- &h->esym))
+ /* Allocate space for all of the .got subsections. */
+ i = alpha_elf_hash_table (info)->got_list;
+ for ( ; i ; i = alpha_elf_tdata(i)->got_link_next)
{
- einfo->failed = TRUE;
- return FALSE;
+ asection *s = alpha_elf_tdata(i)->got;
+ if (s->size > 0)
+ {
+ s->contents = (bfd_byte *) bfd_zalloc (i, s->size);
+ if (s->contents == NULL)
+ return FALSE;
+ }
}
return TRUE;
}
-\f
-/* Search for and possibly create a got entry. */
-static struct alpha_elf_got_entry *
-get_got_entry (abfd, h, r_type, r_symndx, r_addend)
- bfd *abfd;
- struct alpha_elf_link_hash_entry *h;
- unsigned long r_type, r_symndx;
- bfd_vma r_addend;
-{
- struct alpha_elf_got_entry *gotent;
- struct alpha_elf_got_entry **slot;
+/* The number of dynamic relocations required by a static relocation. */
- if (h)
- slot = &h->got_entries;
- else
+static int
+alpha_dynamic_entries_for_reloc (int r_type, int dynamic, int shared)
+{
+ switch (r_type)
{
- /* This is a local .got entry -- record for merge. */
+ /* May appear in GOT entries. */
+ case R_ALPHA_TLSGD:
+ return (dynamic ? 2 : shared ? 1 : 0);
+ case R_ALPHA_TLSLDM:
+ return shared;
+ case R_ALPHA_LITERAL:
+ case R_ALPHA_GOTTPREL:
+ return dynamic || shared;
+ case R_ALPHA_GOTDTPREL:
+ return dynamic;
- struct alpha_elf_got_entry **local_got_entries;
+ /* May appear in data sections. */
+ case R_ALPHA_REFLONG:
+ case R_ALPHA_REFQUAD:
+ case R_ALPHA_TPREL64:
+ return dynamic || shared;
- local_got_entries = alpha_elf_tdata(abfd)->local_got_entries;
- if (!local_got_entries)
- {
- bfd_size_type size;
- Elf_Internal_Shdr *symtab_hdr;
+ /* Everything else is illegal. We'll issue an error during
+ relocate_section. */
+ default:
+ return 0;
+ }
+}
- symtab_hdr = &elf_tdata(abfd)->symtab_hdr;
- size = symtab_hdr->sh_info;
- size *= sizeof (struct alpha_elf_got_entry *);
+/* Work out the sizes of the dynamic relocation entries. */
- local_got_entries
- = (struct alpha_elf_got_entry **) bfd_zalloc (abfd, size);
- if (!local_got_entries)
- return NULL;
+static bfd_boolean
+elf64_alpha_calc_dynrel_sizes (struct alpha_elf_link_hash_entry *h,
+ struct bfd_link_info *info)
+{
+ bfd_boolean dynamic;
+ struct alpha_elf_reloc_entry *relent;
+ unsigned long entries;
- alpha_elf_tdata (abfd)->local_got_entries = local_got_entries;
- }
+ if (h->root.root.type == bfd_link_hash_warning)
+ h = (struct alpha_elf_link_hash_entry *) h->root.root.u.i.link;
- slot = &local_got_entries[r_symndx];
- }
+ /* If the symbol was defined as a common symbol in a regular object
+ file, and there was no definition in any dynamic object, then the
+ linker will have allocated space for the symbol in a common
+ section but the ELF_LINK_HASH_DEF_REGULAR flag will not have been
+ set. This is done for dynamic symbols in
+ elf_adjust_dynamic_symbol but this is not done for non-dynamic
+ symbols, somehow. */
+ if (!h->root.def_regular
+ && h->root.ref_regular
+ && !h->root.def_dynamic
+ && (h->root.root.type == bfd_link_hash_defined
+ || h->root.root.type == bfd_link_hash_defweak)
+ && !(h->root.root.u.def.section->owner->flags & DYNAMIC))
+ h->root.def_regular = 1;
- for (gotent = *slot; gotent ; gotent = gotent->next)
- if (gotent->gotobj == abfd
- && gotent->reloc_type == r_type
- && gotent->addend == r_addend)
- break;
+ /* If the symbol is dynamic, we'll need all the relocations in their
+ natural form. If this is a shared object, and it has been forced
+ local, we'll need the same number of RELATIVE relocations. */
+ dynamic = alpha_elf_dynamic_symbol_p (&h->root, info);
- if (!gotent)
+ /* If the symbol is a hidden undefined weak, then we never have any
+ relocations. Avoid the loop which may want to add RELATIVE relocs
+ based on info->shared. */
+ if (h->root.root.type == bfd_link_hash_undefweak && !dynamic)
+ return TRUE;
+
+ for (relent = h->reloc_entries; relent; relent = relent->next)
{
- int entry_size;
- bfd_size_type amt;
+ entries = alpha_dynamic_entries_for_reloc (relent->rtype, dynamic,
+ info->shared);
+ if (entries)
+ {
+ relent->srel->size +=
+ entries * sizeof (Elf64_External_Rela) * relent->count;
+ if (relent->reltext)
+ info->flags |= DT_TEXTREL;
+ }
+ }
- amt = sizeof (struct alpha_elf_got_entry);
- gotent = (struct alpha_elf_got_entry *) bfd_alloc (abfd, amt);
- if (!gotent)
- return NULL;
+ return TRUE;
+}
- gotent->gotobj = abfd;
- gotent->addend = r_addend;
- gotent->got_offset = -1;
- gotent->use_count = 1;
- gotent->reloc_type = r_type;
- gotent->reloc_done = 0;
- gotent->reloc_xlated = 0;
+/* Subroutine of elf64_alpha_size_rela_got_section for doing the
+ global symbols. */
- gotent->next = *slot;
- *slot = gotent;
+static bfd_boolean
+elf64_alpha_size_rela_got_1 (struct alpha_elf_link_hash_entry *h,
+ struct bfd_link_info *info)
+{
+ bfd_boolean dynamic;
+ struct alpha_elf_got_entry *gotent;
+ unsigned long entries;
- entry_size = alpha_got_entry_size (r_type);
- alpha_elf_tdata (abfd)->total_got_size += entry_size;
- if (!h)
- alpha_elf_tdata(abfd)->local_got_size += entry_size;
+ if (h->root.root.type == bfd_link_hash_warning)
+ h = (struct alpha_elf_link_hash_entry *) h->root.root.u.i.link;
+
+ /* If the symbol is dynamic, we'll need all the relocations in their
+ natural form. If this is a shared object, and it has been forced
+ local, we'll need the same number of RELATIVE relocations. */
+ dynamic = alpha_elf_dynamic_symbol_p (&h->root, info);
+
+ /* If the symbol is a hidden undefined weak, then we never have any
+ relocations. Avoid the loop which may want to add RELATIVE relocs
+ based on info->shared. */
+ if (h->root.root.type == bfd_link_hash_undefweak && !dynamic)
+ return TRUE;
+
+ entries = 0;
+ for (gotent = h->got_entries; gotent ; gotent = gotent->next)
+ if (gotent->use_count > 0)
+ entries += alpha_dynamic_entries_for_reloc (gotent->reloc_type,
+ dynamic, info->shared);
+
+ /* If we are using a .plt entry, subtract one, as the first
+ reference uses a .rela.plt entry instead. */
+ if (h->root.plt.offset != MINUS_ONE)
+ entries--;
+
+ if (entries > 0)
+ {
+ bfd *dynobj = elf_hash_table(info)->dynobj;
+ asection *srel = bfd_get_section_by_name (dynobj, ".rela.got");
+ BFD_ASSERT (srel != NULL);
+ srel->size += sizeof (Elf64_External_Rela) * entries;
}
- else
- gotent->use_count += 1;
- return gotent;
+ return TRUE;
}
-/* Handle dynamic relocations when doing an Alpha ELF link. */
+/* Set the sizes of the dynamic relocation sections. */
static bfd_boolean
-elf64_alpha_check_relocs (abfd, info, sec, relocs)
- bfd *abfd;
- struct bfd_link_info *info;
- asection *sec;
- const Elf_Internal_Rela *relocs;
+elf64_alpha_size_rela_got_section (struct bfd_link_info *info)
{
- bfd *dynobj;
- asection *sreloc;
- const char *rel_sec_name;
- Elf_Internal_Shdr *symtab_hdr;
- struct alpha_elf_link_hash_entry **sym_hashes;
- const Elf_Internal_Rela *rel, *relend;
- bfd_boolean got_created;
- bfd_size_type amt;
+ unsigned long entries;
+ bfd *i, *dynobj;
+ asection *srel;
- if (info->relocatable)
- return TRUE;
+ /* Shared libraries often require RELATIVE relocs, and some relocs
+ require attention for the main application as well. */
- /* Don't do anything special with non-loaded, non-alloced sections.
- In particular, any relocs in such sections should not affect GOT
- and PLT reference counting (ie. we don't allow them to create GOT
- or PLT entries), there's no possibility or desire to optimize TLS
- relocs, and there's not much point in propagating relocs to shared
- libs that the dynamic linker won't relocate. */
- if ((sec->flags & SEC_ALLOC) == 0)
- return TRUE;
+ entries = 0;
+ for (i = alpha_elf_hash_table(info)->got_list;
+ i ; i = alpha_elf_tdata(i)->got_link_next)
+ {
+ bfd *j;
- dynobj = elf_hash_table(info)->dynobj;
- if (dynobj == NULL)
- elf_hash_table(info)->dynobj = dynobj = abfd;
+ for (j = i; j ; j = alpha_elf_tdata(j)->in_got_link_next)
+ {
+ struct alpha_elf_got_entry **local_got_entries, *gotent;
+ int k, n;
- sreloc = NULL;
- rel_sec_name = NULL;
- symtab_hdr = &elf_tdata(abfd)->symtab_hdr;
- sym_hashes = alpha_elf_sym_hashes(abfd);
- got_created = FALSE;
+ local_got_entries = alpha_elf_tdata(j)->local_got_entries;
+ if (!local_got_entries)
+ continue;
- relend = relocs + sec->reloc_count;
- for (rel = relocs; rel < relend; ++rel)
- {
- enum {
- NEED_GOT = 1,
- NEED_GOT_ENTRY = 2,
- NEED_DYNREL = 4
- };
+ for (k = 0, n = elf_tdata(j)->symtab_hdr.sh_info; k < n; ++k)
+ for (gotent = local_got_entries[k];
+ gotent ; gotent = gotent->next)
+ if (gotent->use_count > 0)
+ entries += (alpha_dynamic_entries_for_reloc
+ (gotent->reloc_type, 0, info->shared));
+ }
+ }
- unsigned long r_symndx, r_type;
- struct alpha_elf_link_hash_entry *h;
- unsigned int gotent_flags;
- bfd_boolean maybe_dynamic;
- unsigned int need;
- bfd_vma addend;
+ dynobj = elf_hash_table(info)->dynobj;
+ srel = bfd_get_section_by_name (dynobj, ".rela.got");
+ if (!srel)
+ {
+ BFD_ASSERT (entries == 0);
+ return TRUE;
+ }
+ srel->size = sizeof (Elf64_External_Rela) * entries;
- r_symndx = ELF64_R_SYM (rel->r_info);
- if (r_symndx < symtab_hdr->sh_info)
- h = NULL;
- else
- {
- h = sym_hashes[r_symndx - symtab_hdr->sh_info];
+ /* Now do the non-local symbols. */
+ alpha_elf_link_hash_traverse (alpha_elf_hash_table (info),
+ elf64_alpha_size_rela_got_1, info);
- while (h->root.root.type == bfd_link_hash_indirect
- || h->root.root.type == bfd_link_hash_warning)
- h = (struct alpha_elf_link_hash_entry *)h->root.root.u.i.link;
+ return TRUE;
+}
- h->root.ref_regular = 1;
- }
+/* Set the sizes of the dynamic sections. */
- /* We can only get preliminary data on whether a symbol is
- locally or externally defined, as not all of the input files
- have yet been processed. Do something with what we know, as
- this may help reduce memory usage and processing time later. */
- maybe_dynamic = FALSE;
- if (h && ((info->shared
- && (!info->symbolic || info->unresolved_syms_in_shared_libs == RM_IGNORE))
- || !h->root.def_regular
- || h->root.root.type == bfd_link_hash_defweak))
- maybe_dynamic = TRUE;
+static bfd_boolean
+elf64_alpha_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
+ struct bfd_link_info *info)
+{
+ bfd *dynobj;
+ asection *s;
+ bfd_boolean relplt;
- need = 0;
- gotent_flags = 0;
- r_type = ELF64_R_TYPE (rel->r_info);
- addend = rel->r_addend;
+ dynobj = elf_hash_table(info)->dynobj;
+ BFD_ASSERT(dynobj != NULL);
- switch (r_type)
+ if (elf_hash_table (info)->dynamic_sections_created)
+ {
+ /* Set the contents of the .interp section to the interpreter. */
+ if (info->executable)
{
- case R_ALPHA_LITERAL:
- need = NEED_GOT | NEED_GOT_ENTRY;
-
- /* Remember how this literal is used from its LITUSEs.
- This will be important when it comes to decide if we can
- create a .plt entry for a function symbol. */
- while (++rel < relend && ELF64_R_TYPE (rel->r_info) == R_ALPHA_LITUSE)
- if (rel->r_addend >= 1 && rel->r_addend <= 5)
- gotent_flags |= 1 << rel->r_addend;
- --rel;
+ s = bfd_get_section_by_name (dynobj, ".interp");
+ BFD_ASSERT (s != NULL);
+ s->size = sizeof ELF_DYNAMIC_INTERPRETER;
+ s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
+ }
- /* No LITUSEs -- presumably the address is used somehow. */
- if (gotent_flags == 0)
- gotent_flags = ALPHA_ELF_LINK_HASH_LU_ADDR;
- break;
+ /* Now that we've seen all of the input files, we can decide which
+ symbols need dynamic relocation entries and which don't. We've
+ collected information in check_relocs that we can now apply to
+ size the dynamic relocation sections. */
+ alpha_elf_link_hash_traverse (alpha_elf_hash_table (info),
+ elf64_alpha_calc_dynrel_sizes, info);
- case R_ALPHA_GPDISP:
- case R_ALPHA_GPREL16:
- case R_ALPHA_GPREL32:
- case R_ALPHA_GPRELHIGH:
- case R_ALPHA_GPRELLOW:
- case R_ALPHA_BRSGP:
- need = NEED_GOT;
- break;
+ elf64_alpha_size_rela_got_section (info);
+ }
+ /* else we're not dynamic and by definition we don't need such things. */
- case R_ALPHA_REFLONG:
- case R_ALPHA_REFQUAD:
- if (info->shared || maybe_dynamic)
- need = NEED_DYNREL;
- break;
+ /* The check_relocs and adjust_dynamic_symbol entry points have
+ determined the sizes of the various dynamic sections. Allocate
+ memory for them. */
+ relplt = FALSE;
+ for (s = dynobj->sections; s != NULL; s = s->next)
+ {
+ const char *name;
+ bfd_boolean strip;
- case R_ALPHA_TLSLDM:
- /* The symbol for a TLSLDM reloc is ignored. Collapse the
- reloc to the 0 symbol so that they all match. */
- r_symndx = 0;
- h = 0;
- maybe_dynamic = FALSE;
- /* FALLTHRU */
+ if (!(s->flags & SEC_LINKER_CREATED))
+ continue;
- case R_ALPHA_TLSGD:
- case R_ALPHA_GOTDTPREL:
- need = NEED_GOT | NEED_GOT_ENTRY;
- break;
+ /* It's OK to base decisions on the section name, because none
+ of the dynobj section names depend upon the input files. */
+ name = bfd_get_section_name (dynobj, s);
- case R_ALPHA_GOTTPREL:
- need = NEED_GOT | NEED_GOT_ENTRY;
- gotent_flags = ALPHA_ELF_LINK_HASH_TLS_IE;
- if (info->shared)
- info->flags |= DF_STATIC_TLS;
- break;
+ /* If we don't need this section, strip it from the output file.
+ This is to handle .rela.bss and .rela.plt. We must create it
+ in create_dynamic_sections, because it must be created before
+ the linker maps input sections to output sections. The
+ linker does that before adjust_dynamic_symbol is called, and
+ it is that function which decides whether anything needs to
+ go into these sections. */
- case R_ALPHA_TPREL64:
- if (info->shared || maybe_dynamic)
- need = NEED_DYNREL;
- if (info->shared)
- info->flags |= DF_STATIC_TLS;
- break;
- }
+ strip = FALSE;
- if (need & NEED_GOT)
+ if (strncmp (name, ".rela", 5) == 0)
{
- if (!got_created)
- {
- if (!elf64_alpha_create_got_section (abfd, info))
- return FALSE;
+ strip = (s->size == 0);
- /* Make sure the object's gotobj is set to itself so
- that we default to every object with its own .got.
- We'll merge .gots later once we've collected each
- object's info. */
- alpha_elf_tdata(abfd)->gotobj = abfd;
+ if (!strip)
+ {
+ if (strcmp(name, ".rela.plt") == 0)
+ relplt = TRUE;
- got_created = 1;
+ /* We use the reloc_count field as a counter if we need
+ to copy relocs into the output file. */
+ s->reloc_count = 0;
}
}
-
- if (need & NEED_GOT_ENTRY)
+ else if (strcmp (name, ".plt") != 0)
{
- struct alpha_elf_got_entry *gotent;
+ /* It's not one of our dynamic sections, so don't allocate space. */
+ continue;
+ }
- gotent = get_got_entry (abfd, h, r_type, r_symndx, addend);
- if (!gotent)
+ if (strip)
+ s->flags |= SEC_EXCLUDE;
+ else
+ {
+ /* Allocate memory for the section contents. */
+ s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
+ if (s->contents == NULL && s->size != 0)
return FALSE;
+ }
+ }
- if (gotent_flags)
- {
- gotent->flags |= gotent_flags;
- if (h)
- {
- gotent_flags |= h->flags;
- h->flags = gotent_flags;
+ if (elf_hash_table (info)->dynamic_sections_created)
+ {
+ /* Add some entries to the .dynamic section. We fill in the
+ values later, in elf64_alpha_finish_dynamic_sections, but we
+ must add the entries now so that we get the correct size for
+ the .dynamic section. The DT_DEBUG entry is filled in by the
+ dynamic linker and used by the debugger. */
+#define add_dynamic_entry(TAG, VAL) \
+ _bfd_elf_add_dynamic_entry (info, TAG, VAL)
- /* Make a guess as to whether a .plt entry is needed. */
- if ((gotent_flags & ALPHA_ELF_LINK_HASH_LU_FUNC)
- && !(gotent_flags & ~ALPHA_ELF_LINK_HASH_LU_FUNC))
- h->root.needs_plt = 1;
- else
- h->root.needs_plt = 0;
- }
- }
+ if (info->executable)
+ {
+ if (!add_dynamic_entry (DT_DEBUG, 0))
+ return FALSE;
}
- if (need & NEED_DYNREL)
+ if (relplt)
{
- if (rel_sec_name == NULL)
- {
- rel_sec_name = (bfd_elf_string_from_elf_section
- (abfd, elf_elfheader(abfd)->e_shstrndx,
- elf_section_data(sec)->rel_hdr.sh_name));
- if (rel_sec_name == NULL)
- return FALSE;
-
- BFD_ASSERT (strncmp (rel_sec_name, ".rela", 5) == 0
- && strcmp (bfd_get_section_name (abfd, sec),
- rel_sec_name+5) == 0);
- }
-
- /* We need to create the section here now whether we eventually
- use it or not so that it gets mapped to an output section by
- the linker. If not used, we'll kill it in
- size_dynamic_sections. */
- if (sreloc == NULL)
- {
- sreloc = bfd_get_section_by_name (dynobj, rel_sec_name);
- if (sreloc == NULL)
- {
- flagword flags;
-
- flags = (SEC_HAS_CONTENTS | SEC_IN_MEMORY
- | SEC_LINKER_CREATED | SEC_READONLY);
- if (sec->flags & SEC_ALLOC)
- flags |= SEC_ALLOC | SEC_LOAD;
- sreloc = bfd_make_section_with_flags (dynobj,
- rel_sec_name,
- flags);
- if (sreloc == NULL
- || !bfd_set_section_alignment (dynobj, sreloc, 3))
- return FALSE;
- }
- }
-
- if (h)
- {
- /* Since we havn't seen all of the input symbols yet, we
- don't know whether we'll actually need a dynamic relocation
- entry for this reloc. So make a record of it. Once we
- find out if this thing needs dynamic relocation we'll
- expand the relocation sections by the appropriate amount. */
-
- struct alpha_elf_reloc_entry *rent;
-
- for (rent = h->reloc_entries; rent; rent = rent->next)
- if (rent->rtype == r_type && rent->srel == sreloc)
- break;
-
- if (!rent)
- {
- amt = sizeof (struct alpha_elf_reloc_entry);
- rent = (struct alpha_elf_reloc_entry *) bfd_alloc (abfd, amt);
- if (!rent)
- return FALSE;
-
- rent->srel = sreloc;
- rent->rtype = r_type;
- rent->count = 1;
- rent->reltext = (sec->flags & SEC_READONLY) != 0;
+ if (!add_dynamic_entry (DT_PLTGOT, 0)
+ || !add_dynamic_entry (DT_PLTRELSZ, 0)
+ || !add_dynamic_entry (DT_PLTREL, DT_RELA)
+ || !add_dynamic_entry (DT_JMPREL, 0))
+ return FALSE;
+ }
- rent->next = h->reloc_entries;
- h->reloc_entries = rent;
- }
- else
- rent->count++;
- }
- else if (info->shared)
- {
- /* If this is a shared library, and the section is to be
- loaded into memory, we need a RELATIVE reloc. */
- sreloc->size += sizeof (Elf64_External_Rela);
- if (sec->flags & SEC_READONLY)
- info->flags |= DF_TEXTREL;
- }
+ if (!add_dynamic_entry (DT_RELA, 0)
+ || !add_dynamic_entry (DT_RELASZ, 0)
+ || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela)))
+ return FALSE;
+
+ if (info->flags & DF_TEXTREL)
+ {
+ if (!add_dynamic_entry (DT_TEXTREL, 0))
+ return FALSE;
}
}
+#undef add_dynamic_entry
return TRUE;
}
+\f
+/* These functions do relaxation for Alpha ELF.
-/* Adjust a symbol defined by a dynamic object and referenced by a
- regular object. The current definition is in some section of the
- dynamic object, but we're not including those sections. We have to
- change the definition to something the rest of the link can
- understand. */
+ Currently I'm only handling what I can do with existing compiler
+ and assembler support, which means no instructions are removed,
+ though some may be nopped. At this time GCC does not emit enough
+ information to do all of the relaxing that is possible. It will
+ take some not small amount of work for that to happen.
-static bfd_boolean
-elf64_alpha_adjust_dynamic_symbol (info, h)
- struct bfd_link_info *info;
- struct elf_link_hash_entry *h;
-{
- bfd *dynobj;
- asection *s;
- struct alpha_elf_link_hash_entry *ah;
+ There are a couple of interesting papers that I once read on this
+ subject, that I cannot find references to at the moment, that
+ related to Alpha in particular. They are by David Wall, then of
+ DEC WRL. */
- dynobj = elf_hash_table(info)->dynobj;
- ah = (struct alpha_elf_link_hash_entry *)h;
+#define OP_LDA 0x08
+#define OP_LDAH 0x09
+#define INSN_JSR 0x68004000
+#define INSN_JSR_MASK 0xfc00c000
+#define OP_LDQ 0x29
+#define OP_BR 0x30
+#define OP_BSR 0x34
+#define INSN_UNOP 0x2ffe0000
+#define INSN_ADDQ 0x40000400
+#define INSN_RDUNIQ 0x0000009e
- /* Now that we've seen all of the input symbols, finalize our decision
- about whether this symbol should get a .plt entry. */
+struct alpha_relax_info
+{
+ bfd *abfd;
+ asection *sec;
+ bfd_byte *contents;
+ Elf_Internal_Shdr *symtab_hdr;
+ Elf_Internal_Rela *relocs, *relend;
+ struct bfd_link_info *link_info;
+ bfd_vma gp;
+ bfd *gotobj;
+ asection *tsec;
+ struct alpha_elf_link_hash_entry *h;
+ struct alpha_elf_got_entry **first_gotent;
+ struct alpha_elf_got_entry *gotent;
+ bfd_boolean changed_contents;
+ bfd_boolean changed_relocs;
+ unsigned char other;
+};
- if (alpha_elf_dynamic_symbol_p (h, info)
- && ((h->type == STT_FUNC
- && !(ah->flags & ALPHA_ELF_LINK_HASH_LU_ADDR))
- || (h->type == STT_NOTYPE
- && (ah->flags & ALPHA_ELF_LINK_HASH_LU_FUNC)
- && !(ah->flags & ~ALPHA_ELF_LINK_HASH_LU_FUNC)))
- /* Don't prevent otherwise valid programs from linking by attempting
- to create a new .got entry somewhere. A Correct Solution would be
- to add a new .got section to a new object file and let it be merged
- somewhere later. But for now don't bother. */
- && ah->got_entries)
+static Elf_Internal_Rela *
+elf64_alpha_find_reloc_at_ofs (Elf_Internal_Rela *rel,
+ Elf_Internal_Rela *relend,
+ bfd_vma offset, int type)
+{
+ while (rel < relend)
{
- h->needs_plt = 1;
+ if (rel->r_offset == offset
+ && ELF64_R_TYPE (rel->r_info) == (unsigned int) type)
+ return rel;
+ ++rel;
+ }
+ return NULL;
+}
- s = bfd_get_section_by_name(dynobj, ".plt");
- if (!s && !elf64_alpha_create_dynamic_sections (dynobj, info))
- return FALSE;
+static bfd_boolean
+elf64_alpha_relax_got_load (struct alpha_relax_info *info, bfd_vma symval,
+ Elf_Internal_Rela *irel, unsigned long r_type)
+{
+ unsigned int insn;
+ bfd_signed_vma disp;
- /* The first bit of the .plt is reserved. */
- if (s->size == 0)
- s->size = PLT_HEADER_SIZE;
+ /* Get the instruction. */
+ insn = bfd_get_32 (info->abfd, info->contents + irel->r_offset);
- h->plt.offset = s->size;
- s->size += PLT_ENTRY_SIZE;
+ if (insn >> 26 != OP_LDQ)
+ {
+ reloc_howto_type *howto = elf64_alpha_howto_table + r_type;
+ ((*_bfd_error_handler)
+ ("%B: %A+0x%lx: warning: %s relocation against unexpected insn",
+ info->abfd, info->sec,
+ (unsigned long) irel->r_offset, howto->name));
+ return TRUE;
+ }
- /* If this symbol is not defined in a regular file, and we are not
- generating a shared library, then set the symbol to the location
- in the .plt. This is required to make function pointers compare
- equal between the normal executable and the shared library. */
- if (! info->shared
- && h->root.type != bfd_link_hash_defweak)
- {
- ah->plt_old_section = h->root.u.def.section;
- ah->plt_old_value = h->root.u.def.value;
- ah->flags |= ALPHA_ELF_LINK_HASH_PLT_LOC;
- h->root.u.def.section = s;
- h->root.u.def.value = h->plt.offset;
- }
+ /* Can't relax dynamic symbols. */
+ if (alpha_elf_dynamic_symbol_p (&info->h->root, info->link_info))
+ return TRUE;
- /* We also need a JMP_SLOT entry in the .rela.plt section. */
- s = bfd_get_section_by_name (dynobj, ".rela.plt");
- BFD_ASSERT (s != NULL);
- s->size += sizeof (Elf64_External_Rela);
+ /* Can't use local-exec relocations in shared libraries. */
+ if (r_type == R_ALPHA_GOTTPREL && info->link_info->shared)
+ return TRUE;
- return TRUE;
+ if (r_type == R_ALPHA_LITERAL)
+ {
+ /* Look for nice constant addresses. This includes the not-uncommon
+ special case of 0 for undefweak symbols. */
+ if ((info->h && info->h->root.root.type == bfd_link_hash_undefweak)
+ || (!info->link_info->shared
+ && (symval >= (bfd_vma)-0x8000 || symval < 0x8000)))
+ {
+ disp = 0;
+ insn = (OP_LDA << 26) | (insn & (31 << 21)) | (31 << 16);
+ insn |= (symval & 0xffff);
+ r_type = R_ALPHA_NONE;
+ }
+ else
+ {
+ disp = symval - info->gp;
+ insn = (OP_LDA << 26) | (insn & 0x03ff0000);
+ r_type = R_ALPHA_GPREL16;
+ }
}
else
- h->needs_plt = 0;
-
- /* If this is a weak symbol, and there is a real definition, the
- processor independent code will have arranged for us to see the
- real definition first, and we can just use the same value. */
- if (h->u.weakdef != NULL)
{
- BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
- || h->u.weakdef->root.type == bfd_link_hash_defweak);
- h->root.u.def.section = h->u.weakdef->root.u.def.section;
- h->root.u.def.value = h->u.weakdef->root.u.def.value;
- return TRUE;
- }
-
- /* This is a reference to a symbol defined by a dynamic object which
- is not a function. The Alpha, since it uses .got entries for all
- symbols even in regular objects, does not need the hackery of a
- .dynbss section and COPY dynamic relocations. */
+ bfd_vma dtp_base, tp_base;
- return TRUE;
-}
+ BFD_ASSERT (elf_hash_table (info->link_info)->tls_sec != NULL);
+ dtp_base = alpha_get_dtprel_base (info->link_info);
+ tp_base = alpha_get_tprel_base (info->link_info);
+ disp = symval - (r_type == R_ALPHA_GOTDTPREL ? dtp_base : tp_base);
-/* Symbol versioning can create new symbols, and make our old symbols
- indirect to the new ones. Consolidate the got and reloc information
- in these situations. */
+ insn = (OP_LDA << 26) | (insn & (31 << 21)) | (31 << 16);
-static bfd_boolean
-elf64_alpha_merge_ind_symbols (hi, dummy)
- struct alpha_elf_link_hash_entry *hi;
- PTR dummy ATTRIBUTE_UNUSED;
-{
- struct alpha_elf_link_hash_entry *hs;
+ switch (r_type)
+ {
+ case R_ALPHA_GOTDTPREL:
+ r_type = R_ALPHA_DTPREL16;
+ break;
+ case R_ALPHA_GOTTPREL:
+ r_type = R_ALPHA_TPREL16;
+ break;
+ default:
+ BFD_ASSERT (0);
+ return FALSE;
+ }
+ }
- if (hi->root.root.type != bfd_link_hash_indirect)
+ if (disp < -0x8000 || disp >= 0x8000)
return TRUE;
- hs = hi;
- do {
- hs = (struct alpha_elf_link_hash_entry *)hs->root.root.u.i.link;
- } while (hs->root.root.type == bfd_link_hash_indirect);
-
- /* Merge the flags. Whee. */
-
- hs->flags |= hi->flags;
- /* Merge the .got entries. Cannibalize the old symbol's list in
- doing so, since we don't need it anymore. */
+ bfd_put_32 (info->abfd, (bfd_vma) insn, info->contents + irel->r_offset);
+ info->changed_contents = TRUE;
- if (hs->got_entries == NULL)
- hs->got_entries = hi->got_entries;
- else
+ /* Reduce the use count on this got entry by one, possibly
+ eliminating it. */
+ if (--info->gotent->use_count == 0)
{
- struct alpha_elf_got_entry *gi, *gs, *gin, *gsh;
-
- gsh = hs->got_entries;
- for (gi = hi->got_entries; gi ; gi = gin)
- {
- gin = gi->next;
- for (gs = gsh; gs ; gs = gs->next)
- if (gi->gotobj == gs->gotobj
- && gi->reloc_type == gs->reloc_type
- && gi->addend == gs->addend)
- {
- gi->use_count += gs->use_count;
- goto got_found;
- }
- gi->next = hs->got_entries;
- hs->got_entries = gi;
- got_found:;
- }
+ int sz = alpha_got_entry_size (r_type);
+ alpha_elf_tdata (info->gotobj)->total_got_size -= sz;
+ if (!info->h)
+ alpha_elf_tdata (info->gotobj)->local_got_size -= sz;
}
- hi->got_entries = NULL;
- /* And similar for the reloc entries. */
+ /* Smash the existing GOT relocation for its 16-bit immediate pair. */
+ irel->r_info = ELF64_R_INFO (ELF64_R_SYM (irel->r_info), r_type);
+ info->changed_relocs = TRUE;
+
+ /* ??? Search forward through this basic block looking for insns
+ that use the target register. Stop after an insn modifying the
+ register is seen, or after a branch or call.
- if (hs->reloc_entries == NULL)
- hs->reloc_entries = hi->reloc_entries;
- else
- {
- struct alpha_elf_reloc_entry *ri, *rs, *rin, *rsh;
+ Any such memory load insn may be substituted by a load directly
+ off the GP. This allows the memory load insn to be issued before
+ the calculated GP register would otherwise be ready.
- rsh = hs->reloc_entries;
- for (ri = hi->reloc_entries; ri ; ri = rin)
- {
- rin = ri->next;
- for (rs = rsh; rs ; rs = rs->next)
- if (ri->rtype == rs->rtype && ri->srel == rs->srel)
- {
- rs->count += ri->count;
- goto found_reloc;
- }
- ri->next = hs->reloc_entries;
- hs->reloc_entries = ri;
- found_reloc:;
- }
- }
- hi->reloc_entries = NULL;
+ Any such jsr insn can be replaced by a bsr if it is in range.
+
+ This would mean that we'd have to _add_ relocations, the pain of
+ which gives one pause. */
return TRUE;
}
-/* Is it possible to merge two object file's .got tables? */
-
-static bfd_boolean
-elf64_alpha_can_merge_gots (a, b)
- bfd *a, *b;
+static bfd_vma
+elf64_alpha_relax_opt_call (struct alpha_relax_info *info, bfd_vma symval)
{
- int total = alpha_elf_tdata (a)->total_got_size;
- bfd *bsub;
+ /* If the function has the same gp, and we can identify that the
+ function does not use its function pointer, we can eliminate the
+ address load. */
- /* Trivial quick fallout test. */
- if (total + alpha_elf_tdata (b)->total_got_size <= MAX_GOT_SIZE)
- return TRUE;
+ /* If the symbol is marked NOPV, we are being told the function never
+ needs its procedure value. */
+ if ((info->other & STO_ALPHA_STD_GPLOAD) == STO_ALPHA_NOPV)
+ return symval;
- /* By their nature, local .got entries cannot be merged. */
- if ((total += alpha_elf_tdata (b)->local_got_size) > MAX_GOT_SIZE)
- return FALSE;
+ /* If the symbol is marked STD_GP, we are being told the function does
+ a normal ldgp in the first two words. */
+ else if ((info->other & STO_ALPHA_STD_GPLOAD) == STO_ALPHA_STD_GPLOAD)
+ ;
- /* Failing the common trivial comparison, we must effectively
- perform the merge. Not actually performing the merge means that
- we don't have to store undo information in case we fail. */
- for (bsub = b; bsub ; bsub = alpha_elf_tdata (bsub)->in_got_link_next)
+ /* Otherwise, we may be able to identify a GP load in the first two
+ words, which we can then skip. */
+ else
{
- struct alpha_elf_link_hash_entry **hashes = alpha_elf_sym_hashes (bsub);
- Elf_Internal_Shdr *symtab_hdr = &elf_tdata (bsub)->symtab_hdr;
- int i, n;
+ Elf_Internal_Rela *tsec_relocs, *tsec_relend, *tsec_free, *gpdisp;
+ bfd_vma ofs;
- n = NUM_SHDR_ENTRIES (symtab_hdr) - symtab_hdr->sh_info;
- for (i = 0; i < n; ++i)
+ /* Load the relocations from the section that the target symbol is in. */
+ if (info->sec == info->tsec)
{
- struct alpha_elf_got_entry *ae, *be;
- struct alpha_elf_link_hash_entry *h;
-
- h = hashes[i];
- while (h->root.root.type == bfd_link_hash_indirect
- || h->root.root.type == bfd_link_hash_warning)
- h = (struct alpha_elf_link_hash_entry *)h->root.root.u.i.link;
+ tsec_relocs = info->relocs;
+ tsec_relend = info->relend;
+ tsec_free = NULL;
+ }
+ else
+ {
+ tsec_relocs = (_bfd_elf_link_read_relocs
+ (info->abfd, info->tsec, (PTR) NULL,
+ (Elf_Internal_Rela *) NULL,
+ info->link_info->keep_memory));
+ if (tsec_relocs == NULL)
+ return 0;
+ tsec_relend = tsec_relocs + info->tsec->reloc_count;
+ tsec_free = (info->link_info->keep_memory ? NULL : tsec_relocs);
+ }
- for (be = h->got_entries; be ; be = be->next)
- {
- if (be->use_count == 0)
- continue;
- if (be->gotobj != b)
- continue;
+ /* Recover the symbol's offset within the section. */
+ ofs = (symval - info->tsec->output_section->vma
+ - info->tsec->output_offset);
- for (ae = h->got_entries; ae ; ae = ae->next)
- if (ae->gotobj == a
- && ae->reloc_type == be->reloc_type
- && ae->addend == be->addend)
- goto global_found;
+ /* Look for a GPDISP reloc. */
+ gpdisp = (elf64_alpha_find_reloc_at_ofs
+ (tsec_relocs, tsec_relend, ofs, R_ALPHA_GPDISP));
- total += alpha_got_entry_size (be->reloc_type);
- if (total > MAX_GOT_SIZE)
- return FALSE;
- global_found:;
- }
+ if (!gpdisp || gpdisp->r_addend != 4)
+ {
+ if (tsec_free)
+ free (tsec_free);
+ return 0;
}
+ if (tsec_free)
+ free (tsec_free);
}
- return TRUE;
-}
+ /* We've now determined that we can skip an initial gp load. Verify
+ that the call and the target use the same gp. */
+ if (info->link_info->hash->creator != info->tsec->owner->xvec
+ || info->gotobj != alpha_elf_tdata (info->tsec->owner)->gotobj)
+ return 0;
-/* Actually merge two .got tables. */
+ return symval + 8;
+}
-static void
-elf64_alpha_merge_gots (a, b)
- bfd *a, *b;
+static bfd_boolean
+elf64_alpha_relax_with_lituse (struct alpha_relax_info *info,
+ bfd_vma symval, Elf_Internal_Rela *irel)
{
- int total = alpha_elf_tdata (a)->total_got_size;
- bfd *bsub;
+ Elf_Internal_Rela *urel, *irelend = info->relend;
+ int flags, count, i;
+ bfd_signed_vma disp;
+ bfd_boolean fits16;
+ bfd_boolean fits32;
+ bfd_boolean lit_reused = FALSE;
+ bfd_boolean all_optimized = TRUE;
+ unsigned int lit_insn;
- /* Remember local expansion. */
- {
- int e = alpha_elf_tdata (b)->local_got_size;
- total += e;
- alpha_elf_tdata (a)->local_got_size += e;
- }
+ lit_insn = bfd_get_32 (info->abfd, info->contents + irel->r_offset);
+ if (lit_insn >> 26 != OP_LDQ)
+ {
+ ((*_bfd_error_handler)
+ ("%B: %A+0x%lx: warning: LITERAL relocation against unexpected insn",
+ info->abfd, info->sec,
+ (unsigned long) irel->r_offset));
+ return TRUE;
+ }
- for (bsub = b; bsub ; bsub = alpha_elf_tdata (bsub)->in_got_link_next)
+ /* Can't relax dynamic symbols. */
+ if (alpha_elf_dynamic_symbol_p (&info->h->root, info->link_info))
+ return TRUE;
+
+ /* Summarize how this particular LITERAL is used. */
+ for (urel = irel+1, flags = count = 0; urel < irelend; ++urel, ++count)
{
- struct alpha_elf_got_entry **local_got_entries;
- struct alpha_elf_link_hash_entry **hashes;
- Elf_Internal_Shdr *symtab_hdr;
- int i, n;
+ if (ELF64_R_TYPE (urel->r_info) != R_ALPHA_LITUSE)
+ break;
+ if (urel->r_addend <= 3)
+ flags |= 1 << urel->r_addend;
+ }
- /* Let the local .got entries know they are part of a new subsegment. */
- local_got_entries = alpha_elf_tdata (bsub)->local_got_entries;
- if (local_got_entries)
- {
- n = elf_tdata (bsub)->symtab_hdr.sh_info;
- for (i = 0; i < n; ++i)
- {
- struct alpha_elf_got_entry *ent;
- for (ent = local_got_entries[i]; ent; ent = ent->next)
- ent->gotobj = a;
- }
- }
+ /* A little preparation for the loop... */
+ disp = symval - info->gp;
- /* Merge the global .got entries. */
- hashes = alpha_elf_sym_hashes (bsub);
- symtab_hdr = &elf_tdata (bsub)->symtab_hdr;
+ for (urel = irel+1, i = 0; i < count; ++i, ++urel)
+ {
+ unsigned int insn;
+ int insn_disp;
+ bfd_signed_vma xdisp;
- n = NUM_SHDR_ENTRIES (symtab_hdr) - symtab_hdr->sh_info;
- for (i = 0; i < n; ++i)
- {
- struct alpha_elf_got_entry *ae, *be, **pbe, **start;
- struct alpha_elf_link_hash_entry *h;
+ insn = bfd_get_32 (info->abfd, info->contents + urel->r_offset);
- h = hashes[i];
- while (h->root.root.type == bfd_link_hash_indirect
- || h->root.root.type == bfd_link_hash_warning)
- h = (struct alpha_elf_link_hash_entry *)h->root.root.u.i.link;
+ switch (urel->r_addend)
+ {
+ case LITUSE_ALPHA_ADDR:
+ default:
+ /* This type is really just a placeholder to note that all
+ uses cannot be optimized, but to still allow some. */
+ all_optimized = FALSE;
+ break;
- pbe = start = &h->got_entries;
- while ((be = *pbe) != NULL)
- {
- if (be->use_count == 0)
- {
- *pbe = be->next;
- memset (be, 0xa5, sizeof (*be));
- goto kill;
- }
- if (be->gotobj != b)
- goto next;
+ case LITUSE_ALPHA_BASE:
+ /* We can always optimize 16-bit displacements. */
- for (ae = *start; ae ; ae = ae->next)
- if (ae->gotobj == a
- && ae->reloc_type == be->reloc_type
- && ae->addend == be->addend)
- {
- ae->flags |= be->flags;
- ae->use_count += be->use_count;
- *pbe = be->next;
- memset (be, 0xa5, sizeof (*be));
- goto kill;
- }
- be->gotobj = a;
- total += alpha_got_entry_size (be->reloc_type);
+ /* Extract the displacement from the instruction, sign-extending
+ it if necessary, then test whether it is within 16 or 32 bits
+ displacement from GP. */
+ insn_disp = ((insn & 0xffff) ^ 0x8000) - 0x8000;
+
+ xdisp = disp + insn_disp;
+ fits16 = (xdisp >= - (bfd_signed_vma) 0x8000 && xdisp < 0x8000);
+ fits32 = (xdisp >= - (bfd_signed_vma) 0x80000000
+ && xdisp < 0x7fff8000);
+
+ if (fits16)
+ {
+ /* Take the op code and dest from this insn, take the base
+ register from the literal insn. Leave the offset alone. */
+ insn = (insn & 0xffe0ffff) | (lit_insn & 0x001f0000);
+ urel->r_info = ELF64_R_INFO (ELF64_R_SYM (irel->r_info),
+ R_ALPHA_GPREL16);
+ urel->r_addend = irel->r_addend;
+ info->changed_relocs = TRUE;
- next:;
- pbe = &be->next;
- kill:;
+ bfd_put_32 (info->abfd, (bfd_vma) insn,
+ info->contents + urel->r_offset);
+ info->changed_contents = TRUE;
}
- }
- alpha_elf_tdata (bsub)->gotobj = a;
- }
- alpha_elf_tdata (a)->total_got_size = total;
+ /* If all mem+byte, we can optimize 32-bit mem displacements. */
+ else if (fits32 && !(flags & ~6))
+ {
+ /* FIXME: sanity check that lit insn Ra is mem insn Rb. */
- /* Merge the two in_got chains. */
- {
- bfd *next;
+ irel->r_info = ELF64_R_INFO (ELF64_R_SYM (irel->r_info),
+ R_ALPHA_GPRELHIGH);
+ lit_insn = (OP_LDAH << 26) | (lit_insn & 0x03ff0000);
+ bfd_put_32 (info->abfd, (bfd_vma) lit_insn,
+ info->contents + irel->r_offset);
+ lit_reused = TRUE;
+ info->changed_contents = TRUE;
- bsub = a;
- while ((next = alpha_elf_tdata (bsub)->in_got_link_next) != NULL)
- bsub = next;
+ urel->r_info = ELF64_R_INFO (ELF64_R_SYM (irel->r_info),
+ R_ALPHA_GPRELLOW);
+ urel->r_addend = irel->r_addend;
+ info->changed_relocs = TRUE;
+ }
+ else
+ all_optimized = FALSE;
+ break;
- alpha_elf_tdata (bsub)->in_got_link_next = b;
- }
-}
+ case LITUSE_ALPHA_BYTOFF:
+ /* We can always optimize byte instructions. */
-/* Calculate the offsets for the got entries. */
+ /* FIXME: sanity check the insn for byte op. Check that the
+ literal dest reg is indeed Rb in the byte insn. */
-static bfd_boolean
-elf64_alpha_calc_got_offsets_for_symbol (h, arg)
- struct alpha_elf_link_hash_entry *h;
- PTR arg ATTRIBUTE_UNUSED;
-{
- bfd_boolean result = TRUE;
- struct alpha_elf_got_entry *gotent;
+ insn &= ~ (unsigned) 0x001ff000;
+ insn |= ((symval & 7) << 13) | 0x1000;
- if (h->root.root.type == bfd_link_hash_warning)
- h = (struct alpha_elf_link_hash_entry *) h->root.root.u.i.link;
+ urel->r_info = ELF64_R_INFO (0, R_ALPHA_NONE);
+ urel->r_addend = 0;
+ info->changed_relocs = TRUE;
- for (gotent = h->got_entries; gotent; gotent = gotent->next)
- if (gotent->use_count > 0)
- {
- struct alpha_elf_obj_tdata *td;
- bfd_size_type *plge;
+ bfd_put_32 (info->abfd, (bfd_vma) insn,
+ info->contents + urel->r_offset);
+ info->changed_contents = TRUE;
+ break;
- td = alpha_elf_tdata (gotent->gotobj);
- if (td == NULL)
+ case LITUSE_ALPHA_JSR:
+ case LITUSE_ALPHA_TLSGD:
+ case LITUSE_ALPHA_TLSLDM:
{
- _bfd_error_handler (_("Symbol %s has no GOT subsection for offset 0x%x"),
- h->root.root.root.string, gotent->got_offset);
- result = FALSE;
- continue;
- }
- plge = &td->got->size;
- gotent->got_offset = *plge;
- *plge += alpha_got_entry_size (gotent->reloc_type);
- }
-
- return result;
-}
-
-static void
-elf64_alpha_calc_got_offsets (info)
- struct bfd_link_info *info;
-{
- bfd *i, *got_list = alpha_elf_hash_table(info)->got_list;
-
- /* First, zero out the .got sizes, as we may be recalculating the
- .got after optimizing it. */
- for (i = got_list; i ; i = alpha_elf_tdata(i)->got_link_next)
- alpha_elf_tdata(i)->got->size = 0;
+ bfd_vma optdest, org;
+ bfd_signed_vma odisp;
- /* Next, fill in the offsets for all the global entries. */
- alpha_elf_link_hash_traverse (alpha_elf_hash_table (info),
- elf64_alpha_calc_got_offsets_for_symbol,
- NULL);
+ /* For undefined weak symbols, we're mostly interested in getting
+ rid of the got entry whenever possible, so optimize this to a
+ use of the zero register. */
+ if (info->h && info->h->root.root.type == bfd_link_hash_undefweak)
+ {
+ insn |= 31 << 16;
+ bfd_put_32 (info->abfd, (bfd_vma) insn,
+ info->contents + urel->r_offset);
- /* Finally, fill in the offsets for the local entries. */
- for (i = got_list; i ; i = alpha_elf_tdata(i)->got_link_next)
- {
- bfd_size_type got_offset = alpha_elf_tdata(i)->got->size;
- bfd *j;
+ info->changed_contents = TRUE;
+ break;
+ }
- for (j = i; j ; j = alpha_elf_tdata(j)->in_got_link_next)
- {
- struct alpha_elf_got_entry **local_got_entries, *gotent;
- int k, n;
+ /* If not zero, place to jump without needing pv. */
+ optdest = elf64_alpha_relax_opt_call (info, symval);
+ org = (info->sec->output_section->vma
+ + info->sec->output_offset
+ + urel->r_offset + 4);
+ odisp = (optdest ? optdest : symval) - org;
- local_got_entries = alpha_elf_tdata(j)->local_got_entries;
- if (!local_got_entries)
- continue;
+ if (odisp >= -0x400000 && odisp < 0x400000)
+ {
+ Elf_Internal_Rela *xrel;
- for (k = 0, n = elf_tdata(j)->symtab_hdr.sh_info; k < n; ++k)
- for (gotent = local_got_entries[k]; gotent; gotent = gotent->next)
- if (gotent->use_count > 0)
- {
- gotent->got_offset = got_offset;
- got_offset += alpha_got_entry_size (gotent->reloc_type);
- }
- }
+ /* Preserve branch prediction call stack when possible. */
+ if ((insn & INSN_JSR_MASK) == INSN_JSR)
+ insn = (OP_BSR << 26) | (insn & 0x03e00000);
+ else
+ insn = (OP_BR << 26) | (insn & 0x03e00000);
- alpha_elf_tdata(i)->got->size = got_offset;
- }
-}
+ urel->r_info = ELF64_R_INFO (ELF64_R_SYM (irel->r_info),
+ R_ALPHA_BRADDR);
+ urel->r_addend = irel->r_addend;
-/* Constructs the gots. */
+ if (optdest)
+ urel->r_addend += optdest - symval;
+ else
+ all_optimized = FALSE;
-static bfd_boolean
-elf64_alpha_size_got_sections (info)
- struct bfd_link_info *info;
-{
- bfd *i, *got_list, *cur_got_obj = NULL;
- int something_changed = 0;
+ bfd_put_32 (info->abfd, (bfd_vma) insn,
+ info->contents + urel->r_offset);
- got_list = alpha_elf_hash_table (info)->got_list;
+ /* Kill any HINT reloc that might exist for this insn. */
+ xrel = (elf64_alpha_find_reloc_at_ofs
+ (info->relocs, info->relend, urel->r_offset,
+ R_ALPHA_HINT));
+ if (xrel)
+ xrel->r_info = ELF64_R_INFO (0, R_ALPHA_NONE);
- /* On the first time through, pretend we have an existing got list
- consisting of all of the input files. */
- if (got_list == NULL)
- {
- for (i = info->input_bfds; i ; i = i->link_next)
- {
- bfd *this_got = alpha_elf_tdata (i)->gotobj;
- if (this_got == NULL)
- continue;
+ info->changed_contents = TRUE;
+ info->changed_relocs = TRUE;
+ }
+ else
+ all_optimized = FALSE;
- /* We are assuming no merging has yet occurred. */
- BFD_ASSERT (this_got == i);
+ /* Even if the target is not in range for a direct branch,
+ if we share a GP, we can eliminate the gp reload. */
+ if (optdest)
+ {
+ Elf_Internal_Rela *gpdisp
+ = (elf64_alpha_find_reloc_at_ofs
+ (info->relocs, irelend, urel->r_offset + 4,
+ R_ALPHA_GPDISP));
+ if (gpdisp)
+ {
+ bfd_byte *p_ldah = info->contents + gpdisp->r_offset;
+ bfd_byte *p_lda = p_ldah + gpdisp->r_addend;
+ unsigned int ldah = bfd_get_32 (info->abfd, p_ldah);
+ unsigned int lda = bfd_get_32 (info->abfd, p_lda);
- if (alpha_elf_tdata (this_got)->total_got_size > MAX_GOT_SIZE)
- {
- /* Yikes! A single object file has too many entries. */
- (*_bfd_error_handler)
- (_("%B: .got subsegment exceeds 64K (size %d)"),
- i, alpha_elf_tdata (this_got)->total_got_size);
- return FALSE;
- }
+ /* Verify that the instruction is "ldah $29,0($26)".
+ Consider a function that ends in a noreturn call,
+ and that the next function begins with an ldgp,
+ and that by accident there is no padding between.
+ In that case the insn would use $27 as the base. */
+ if (ldah == 0x27ba0000 && lda == 0x23bd0000)
+ {
+ bfd_put_32 (info->abfd, (bfd_vma) INSN_UNOP, p_ldah);
+ bfd_put_32 (info->abfd, (bfd_vma) INSN_UNOP, p_lda);
- if (got_list == NULL)
- got_list = this_got;
- else
- alpha_elf_tdata(cur_got_obj)->got_link_next = this_got;
- cur_got_obj = this_got;
+ gpdisp->r_info = ELF64_R_INFO (0, R_ALPHA_NONE);
+ info->changed_contents = TRUE;
+ info->changed_relocs = TRUE;
+ }
+ }
+ }
+ }
+ break;
}
-
- /* Strange degenerate case of no got references. */
- if (got_list == NULL)
- return TRUE;
-
- alpha_elf_hash_table (info)->got_list = got_list;
-
- /* Force got offsets to be recalculated. */
- something_changed = 1;
}
- cur_got_obj = got_list;
- i = alpha_elf_tdata(cur_got_obj)->got_link_next;
- while (i != NULL)
+ /* If all cases were optimized, we can reduce the use count on this
+ got entry by one, possibly eliminating it. */
+ if (all_optimized)
{
- if (elf64_alpha_can_merge_gots (cur_got_obj, i))
+ if (--info->gotent->use_count == 0)
{
- elf64_alpha_merge_gots (cur_got_obj, i);
-
- alpha_elf_tdata(i)->got->size = 0;
- i = alpha_elf_tdata(i)->got_link_next;
- alpha_elf_tdata(cur_got_obj)->got_link_next = i;
-
- something_changed = 1;
+ int sz = alpha_got_entry_size (R_ALPHA_LITERAL);
+ alpha_elf_tdata (info->gotobj)->total_got_size -= sz;
+ if (!info->h)
+ alpha_elf_tdata (info->gotobj)->local_got_size -= sz;
}
- else
+
+ /* If the literal instruction is no longer needed (it may have been
+ reused. We can eliminate it. */
+ /* ??? For now, I don't want to deal with compacting the section,
+ so just nop it out. */
+ if (!lit_reused)
{
- cur_got_obj = i;
- i = alpha_elf_tdata(i)->got_link_next;
- }
- }
+ irel->r_info = ELF64_R_INFO (0, R_ALPHA_NONE);
+ info->changed_relocs = TRUE;
- /* Once the gots have been merged, fill in the got offsets for
- everything therein. */
- if (1 || something_changed)
- elf64_alpha_calc_got_offsets (info);
+ bfd_put_32 (info->abfd, (bfd_vma) INSN_UNOP,
+ info->contents + irel->r_offset);
+ info->changed_contents = TRUE;
+ }
- return TRUE;
+ return TRUE;
+ }
+ else
+ return elf64_alpha_relax_got_load (info, symval, irel, R_ALPHA_LITERAL);
}
-/* Called from relax_section to rebuild the PLT in light of
- potential changes in the function's status. */
-
static bfd_boolean
-elf64_alpha_size_plt_section (info)
- struct bfd_link_info *info;
+elf64_alpha_relax_tls_get_addr (struct alpha_relax_info *info, bfd_vma symval,
+ Elf_Internal_Rela *irel, bfd_boolean is_gd)
{
- asection *splt, *spltrel;
- unsigned long entries;
- bfd *dynobj;
-
- dynobj = elf_hash_table(info)->dynobj;
- splt = bfd_get_section_by_name(dynobj, ".plt");
- if (splt == NULL)
- return TRUE;
+ bfd_byte *pos[5];
+ unsigned int insn;
+ Elf_Internal_Rela *gpdisp, *hint;
+ bfd_boolean dynamic, use_gottprel, pos1_unusable;
+ unsigned long new_symndx;
- splt->size = 0;
+ dynamic = alpha_elf_dynamic_symbol_p (&info->h->root, info->link_info);
- alpha_elf_link_hash_traverse (alpha_elf_hash_table (info),
- elf64_alpha_size_plt_section_1, splt);
+ /* If a TLS symbol is accessed using IE at least once, there is no point
+ to use dynamic model for it. */
+ if (is_gd && info->h && (info->h->flags & ALPHA_ELF_LINK_HASH_TLS_IE))
+ ;
- /* Every plt entry requires a JMP_SLOT relocation. */
- spltrel = bfd_get_section_by_name (dynobj, ".rela.plt");
- if (splt->size)
- entries = (splt->size - PLT_HEADER_SIZE) / PLT_ENTRY_SIZE;
- else
- entries = 0;
- spltrel->size = entries * sizeof (Elf64_External_Rela);
+ /* If the symbol is local, and we've already committed to DF_STATIC_TLS,
+ then we might as well relax to IE. */
+ else if (info->link_info->shared && !dynamic
+ && (info->link_info->flags & DF_STATIC_TLS))
+ ;
- return TRUE;
-}
+ /* Otherwise we must be building an executable to do anything. */
+ else if (info->link_info->shared)
+ return TRUE;
-static bfd_boolean
-elf64_alpha_size_plt_section_1 (h, data)
- struct alpha_elf_link_hash_entry *h;
- PTR data;
-{
- asection *splt = (asection *) data;
- struct alpha_elf_got_entry *gotent;
+ /* The TLSGD/TLSLDM relocation must be followed by a LITERAL and
+ the matching LITUSE_TLS relocations. */
+ if (irel + 2 >= info->relend)
+ return TRUE;
+ if (ELF64_R_TYPE (irel[1].r_info) != R_ALPHA_LITERAL
+ || ELF64_R_TYPE (irel[2].r_info) != R_ALPHA_LITUSE
+ || irel[2].r_addend != (is_gd ? LITUSE_ALPHA_TLSGD : LITUSE_ALPHA_TLSLDM))
+ return TRUE;
- /* If we didn't need an entry before, we still don't. */
- if (!h->root.needs_plt)
+ /* There must be a GPDISP relocation positioned immediately after the
+ LITUSE relocation. */
+ gpdisp = elf64_alpha_find_reloc_at_ofs (info->relocs, info->relend,
+ irel[2].r_offset + 4, R_ALPHA_GPDISP);
+ if (!gpdisp)
return TRUE;
- /* There must still be a LITERAL got entry for the function. */
- for (gotent = h->got_entries; gotent ; gotent = gotent->next)
- if (gotent->reloc_type == R_ALPHA_LITERAL
- && gotent->use_count > 0)
- break;
+ pos[0] = info->contents + irel[0].r_offset;
+ pos[1] = info->contents + irel[1].r_offset;
+ pos[2] = info->contents + irel[2].r_offset;
+ pos[3] = info->contents + gpdisp->r_offset;
+ pos[4] = pos[3] + gpdisp->r_addend;
+ pos1_unusable = FALSE;
- /* If there is, reset the PLT offset. If not, there's no longer
- a need for the PLT entry. */
- if (gotent)
+ /* Generally, the positions are not allowed to be out of order, lest the
+ modified insn sequence have different register lifetimes. We can make
+ an exception when pos 1 is adjacent to pos 0. */
+ if (pos[1] + 4 == pos[0])
{
- if (splt->size == 0)
- splt->size = PLT_HEADER_SIZE;
- h->root.plt.offset = splt->size;
- splt->size += PLT_ENTRY_SIZE;
+ bfd_byte *tmp = pos[0];
+ pos[0] = pos[1];
+ pos[1] = tmp;
}
- else
- {
- h->root.needs_plt = 0;
- h->root.plt.offset = -1;
+ else if (pos[1] < pos[0])
+ pos1_unusable = TRUE;
+ if (pos[1] >= pos[2] || pos[2] >= pos[3])
+ return TRUE;
- /* Undo the definition frobbing begun in adjust_dynamic_symbol. */
- if (h->flags & ALPHA_ELF_LINK_HASH_PLT_LOC)
- {
- h->root.root.u.def.section = h->plt_old_section;
- h->root.root.u.def.value = h->plt_old_value;
- h->flags &= ~ALPHA_ELF_LINK_HASH_PLT_LOC;
- }
- }
+ /* Reduce the use count on the LITERAL relocation. Do this before we
+ smash the symndx when we adjust the relocations below. */
+ {
+ struct alpha_elf_got_entry *lit_gotent;
+ struct alpha_elf_link_hash_entry *lit_h;
+ unsigned long indx;
- return TRUE;
-}
+ BFD_ASSERT (ELF64_R_SYM (irel[1].r_info) >= info->symtab_hdr->sh_info);
+ indx = ELF64_R_SYM (irel[1].r_info) - info->symtab_hdr->sh_info;
+ lit_h = alpha_elf_sym_hashes (info->abfd)[indx];
-static bfd_boolean
-elf64_alpha_always_size_sections (output_bfd, info)
- bfd *output_bfd ATTRIBUTE_UNUSED;
- struct bfd_link_info *info;
-{
- bfd *i;
+ while (lit_h->root.root.type == bfd_link_hash_indirect
+ || lit_h->root.root.type == bfd_link_hash_warning)
+ lit_h = (struct alpha_elf_link_hash_entry *) lit_h->root.root.u.i.link;
- if (info->relocatable)
- return TRUE;
+ for (lit_gotent = lit_h->got_entries; lit_gotent ;
+ lit_gotent = lit_gotent->next)
+ if (lit_gotent->gotobj == info->gotobj
+ && lit_gotent->reloc_type == R_ALPHA_LITERAL
+ && lit_gotent->addend == irel[1].r_addend)
+ break;
+ BFD_ASSERT (lit_gotent);
- /* First, take care of the indirect symbols created by versioning. */
- alpha_elf_link_hash_traverse (alpha_elf_hash_table (info),
- elf64_alpha_merge_ind_symbols,
- NULL);
+ if (--lit_gotent->use_count == 0)
+ {
+ int sz = alpha_got_entry_size (R_ALPHA_LITERAL);
+ alpha_elf_tdata (info->gotobj)->total_got_size -= sz;
+ }
+ }
- if (!elf64_alpha_size_got_sections (info))
- return FALSE;
+ /* Change
- /* Allocate space for all of the .got subsections. */
- i = alpha_elf_hash_table (info)->got_list;
- for ( ; i ; i = alpha_elf_tdata(i)->got_link_next)
+ lda $16,x($gp) !tlsgd!1
+ ldq $27,__tls_get_addr($gp) !literal!1
+ jsr $26,($27),__tls_get_addr !lituse_tlsgd!1
+ ldah $29,0($26) !gpdisp!2
+ lda $29,0($29) !gpdisp!2
+ to
+ ldq $16,x($gp) !gottprel
+ unop
+ call_pal rduniq
+ addq $16,$0,$0
+ unop
+ or the first pair to
+ lda $16,x($gp) !tprel
+ unop
+ or
+ ldah $16,x($gp) !tprelhi
+ lda $16,x($16) !tprello
+
+ as appropriate. */
+
+ use_gottprel = FALSE;
+ new_symndx = is_gd ? ELF64_R_SYM (irel->r_info) : 0;
+ switch (!dynamic && !info->link_info->shared)
{
- asection *s = alpha_elf_tdata(i)->got;
- if (s->size > 0)
- {
- s->contents = (bfd_byte *) bfd_zalloc (i, s->size);
- if (s->contents == NULL)
- return FALSE;
- }
- }
+ case 1:
+ {
+ bfd_vma tp_base;
+ bfd_signed_vma disp;
- return TRUE;
-}
+ BFD_ASSERT (elf_hash_table (info->link_info)->tls_sec != NULL);
+ tp_base = alpha_get_tprel_base (info->link_info);
+ disp = symval - tp_base;
-/* The number of dynamic relocations required by a static relocation. */
+ if (disp >= -0x8000 && disp < 0x8000)
+ {
+ insn = (OP_LDA << 26) | (16 << 21) | (31 << 16);
+ bfd_put_32 (info->abfd, (bfd_vma) insn, pos[0]);
+ bfd_put_32 (info->abfd, (bfd_vma) INSN_UNOP, pos[1]);
-static int
-alpha_dynamic_entries_for_reloc (r_type, dynamic, shared)
- int r_type, dynamic, shared;
-{
- switch (r_type)
- {
- /* May appear in GOT entries. */
- case R_ALPHA_TLSGD:
- return (dynamic ? 2 : shared ? 1 : 0);
- case R_ALPHA_TLSLDM:
- return shared;
- case R_ALPHA_LITERAL:
- case R_ALPHA_GOTTPREL:
- return dynamic || shared;
- case R_ALPHA_GOTDTPREL:
- return dynamic;
+ irel[0].r_offset = pos[0] - info->contents;
+ irel[0].r_info = ELF64_R_INFO (new_symndx, R_ALPHA_TPREL16);
+ irel[1].r_info = ELF64_R_INFO (0, R_ALPHA_NONE);
+ break;
+ }
+ else if (disp >= -(bfd_signed_vma) 0x80000000
+ && disp < (bfd_signed_vma) 0x7fff8000
+ && !pos1_unusable)
+ {
+ insn = (OP_LDAH << 26) | (16 << 21) | (31 << 16);
+ bfd_put_32 (info->abfd, (bfd_vma) insn, pos[0]);
+ insn = (OP_LDA << 26) | (16 << 21) | (16 << 16);
+ bfd_put_32 (info->abfd, (bfd_vma) insn, pos[1]);
- /* May appear in data sections. */
- case R_ALPHA_REFLONG:
- case R_ALPHA_REFQUAD:
- case R_ALPHA_TPREL64:
- return dynamic || shared;
+ irel[0].r_offset = pos[0] - info->contents;
+ irel[0].r_info = ELF64_R_INFO (new_symndx, R_ALPHA_TPRELHI);
+ irel[1].r_offset = pos[1] - info->contents;
+ irel[1].r_info = ELF64_R_INFO (new_symndx, R_ALPHA_TPRELLO);
+ break;
+ }
+ }
+ /* FALLTHRU */
- /* Everything else is illegal. We'll issue an error during
- relocate_section. */
default:
- return 0;
+ use_gottprel = TRUE;
+
+ insn = (OP_LDQ << 26) | (16 << 21) | (29 << 16);
+ bfd_put_32 (info->abfd, (bfd_vma) insn, pos[0]);
+ bfd_put_32 (info->abfd, (bfd_vma) INSN_UNOP, pos[1]);
+
+ irel[0].r_offset = pos[0] - info->contents;
+ irel[0].r_info = ELF64_R_INFO (new_symndx, R_ALPHA_GOTTPREL);
+ irel[1].r_info = ELF64_R_INFO (0, R_ALPHA_NONE);
+ break;
}
-}
-/* Work out the sizes of the dynamic relocation entries. */
+ bfd_put_32 (info->abfd, (bfd_vma) INSN_RDUNIQ, pos[2]);
-static bfd_boolean
-elf64_alpha_calc_dynrel_sizes (h, info)
- struct alpha_elf_link_hash_entry *h;
- struct bfd_link_info *info;
-{
- bfd_boolean dynamic;
- struct alpha_elf_reloc_entry *relent;
- unsigned long entries;
+ insn = INSN_ADDQ | (16 << 21) | (0 << 16) | (0 << 0);
+ bfd_put_32 (info->abfd, (bfd_vma) insn, pos[3]);
- if (h->root.root.type == bfd_link_hash_warning)
- h = (struct alpha_elf_link_hash_entry *) h->root.root.u.i.link;
+ bfd_put_32 (info->abfd, (bfd_vma) INSN_UNOP, pos[4]);
- /* If the symbol was defined as a common symbol in a regular object
- file, and there was no definition in any dynamic object, then the
- linker will have allocated space for the symbol in a common
- section but the ELF_LINK_HASH_DEF_REGULAR flag will not have been
- set. This is done for dynamic symbols in
- elf_adjust_dynamic_symbol but this is not done for non-dynamic
- symbols, somehow. */
- if (!h->root.def_regular
- && h->root.ref_regular
- && !h->root.def_dynamic
- && (h->root.root.type == bfd_link_hash_defined
- || h->root.root.type == bfd_link_hash_defweak)
- && !(h->root.root.u.def.section->owner->flags & DYNAMIC))
- h->root.def_regular = 1;
+ irel[2].r_info = ELF64_R_INFO (0, R_ALPHA_NONE);
+ gpdisp->r_info = ELF64_R_INFO (0, R_ALPHA_NONE);
- /* If the symbol is dynamic, we'll need all the relocations in their
- natural form. If this is a shared object, and it has been forced
- local, we'll need the same number of RELATIVE relocations. */
- dynamic = alpha_elf_dynamic_symbol_p (&h->root, info);
+ hint = elf64_alpha_find_reloc_at_ofs (info->relocs, info->relend,
+ irel[2].r_offset, R_ALPHA_HINT);
+ if (hint)
+ hint->r_info = ELF64_R_INFO (0, R_ALPHA_NONE);
- /* If the symbol is a hidden undefined weak, then we never have any
- relocations. Avoid the loop which may want to add RELATIVE relocs
- based on info->shared. */
- if (h->root.root.type == bfd_link_hash_undefweak && !dynamic)
- return TRUE;
+ info->changed_contents = TRUE;
+ info->changed_relocs = TRUE;
- for (relent = h->reloc_entries; relent; relent = relent->next)
+ /* Reduce the use count on the TLSGD/TLSLDM relocation. */
+ if (--info->gotent->use_count == 0)
{
- entries = alpha_dynamic_entries_for_reloc (relent->rtype, dynamic,
- info->shared);
- if (entries)
- {
- relent->srel->size +=
- entries * sizeof (Elf64_External_Rela) * relent->count;
- if (relent->reltext)
- info->flags |= DT_TEXTREL;
- }
+ int sz = alpha_got_entry_size (info->gotent->reloc_type);
+ alpha_elf_tdata (info->gotobj)->total_got_size -= sz;
+ if (!info->h)
+ alpha_elf_tdata (info->gotobj)->local_got_size -= sz;
}
- return TRUE;
-}
-
-/* Set the sizes of the dynamic relocation sections. */
-
-static bfd_boolean
-elf64_alpha_size_rela_got_section (info)
- struct bfd_link_info *info;
-{
- unsigned long entries;
- bfd *i, *dynobj;
- asection *srel;
-
- /* Shared libraries often require RELATIVE relocs, and some relocs
- require attention for the main application as well. */
-
- entries = 0;
- for (i = alpha_elf_hash_table(info)->got_list;
- i ; i = alpha_elf_tdata(i)->got_link_next)
+ /* If we've switched to a GOTTPREL relocation, increment the reference
+ count on that got entry. */
+ if (use_gottprel)
{
- bfd *j;
+ struct alpha_elf_got_entry *tprel_gotent;
- for (j = i; j ; j = alpha_elf_tdata(j)->in_got_link_next)
+ for (tprel_gotent = *info->first_gotent; tprel_gotent ;
+ tprel_gotent = tprel_gotent->next)
+ if (tprel_gotent->gotobj == info->gotobj
+ && tprel_gotent->reloc_type == R_ALPHA_GOTTPREL
+ && tprel_gotent->addend == irel->r_addend)
+ break;
+ if (tprel_gotent)
+ tprel_gotent->use_count++;
+ else
{
- struct alpha_elf_got_entry **local_got_entries, *gotent;
- int k, n;
+ if (info->gotent->use_count == 0)
+ tprel_gotent = info->gotent;
+ else
+ {
+ tprel_gotent = (struct alpha_elf_got_entry *)
+ bfd_alloc (info->abfd, sizeof (struct alpha_elf_got_entry));
+ if (!tprel_gotent)
+ return FALSE;
- local_got_entries = alpha_elf_tdata(j)->local_got_entries;
- if (!local_got_entries)
- continue;
+ tprel_gotent->next = *info->first_gotent;
+ *info->first_gotent = tprel_gotent;
- for (k = 0, n = elf_tdata(j)->symtab_hdr.sh_info; k < n; ++k)
- for (gotent = local_got_entries[k];
- gotent ; gotent = gotent->next)
- if (gotent->use_count > 0)
- entries += (alpha_dynamic_entries_for_reloc
- (gotent->reloc_type, 0, info->shared));
- }
- }
+ tprel_gotent->gotobj = info->gotobj;
+ tprel_gotent->addend = irel->r_addend;
+ tprel_gotent->got_offset = -1;
+ tprel_gotent->reloc_done = 0;
+ tprel_gotent->reloc_xlated = 0;
+ }
- dynobj = elf_hash_table(info)->dynobj;
- srel = bfd_get_section_by_name (dynobj, ".rela.got");
- if (!srel)
- {
- BFD_ASSERT (entries == 0);
- return TRUE;
+ tprel_gotent->use_count = 1;
+ tprel_gotent->reloc_type = R_ALPHA_GOTTPREL;
+ }
}
- srel->size = sizeof (Elf64_External_Rela) * entries;
-
- /* Now do the non-local symbols. */
- alpha_elf_link_hash_traverse (alpha_elf_hash_table (info),
- elf64_alpha_size_rela_got_1, info);
return TRUE;
}
-/* Subroutine of elf64_alpha_size_rela_got_section for doing the
- global symbols. */
-
static bfd_boolean
-elf64_alpha_size_rela_got_1 (h, info)
- struct alpha_elf_link_hash_entry *h;
- struct bfd_link_info *info;
+elf64_alpha_relax_section (bfd *abfd, asection *sec,
+ struct bfd_link_info *link_info, bfd_boolean *again)
{
- bfd_boolean dynamic;
- struct alpha_elf_got_entry *gotent;
- unsigned long entries;
-
- if (h->root.root.type == bfd_link_hash_warning)
- h = (struct alpha_elf_link_hash_entry *) h->root.root.u.i.link;
+ Elf_Internal_Shdr *symtab_hdr;
+ Elf_Internal_Rela *internal_relocs;
+ Elf_Internal_Rela *irel, *irelend;
+ Elf_Internal_Sym *isymbuf = NULL;
+ struct alpha_elf_got_entry **local_got_entries;
+ struct alpha_relax_info info;
- /* If the symbol is dynamic, we'll need all the relocations in their
- natural form. If this is a shared object, and it has been forced
- local, we'll need the same number of RELATIVE relocations. */
- dynamic = alpha_elf_dynamic_symbol_p (&h->root, info);
+ /* We are not currently changing any sizes, so only one pass. */
+ *again = FALSE;
- /* If the symbol is a hidden undefined weak, then we never have any
- relocations. Avoid the loop which may want to add RELATIVE relocs
- based on info->shared. */
- if (h->root.root.type == bfd_link_hash_undefweak && !dynamic)
+ if (link_info->relocatable
+ || ((sec->flags & (SEC_CODE | SEC_RELOC | SEC_ALLOC))
+ != (SEC_CODE | SEC_RELOC | SEC_ALLOC))
+ || sec->reloc_count == 0)
return TRUE;
- entries = 0;
- for (gotent = h->got_entries; gotent ; gotent = gotent->next)
- if (gotent->use_count > 0)
- entries += alpha_dynamic_entries_for_reloc (gotent->reloc_type,
- dynamic, info->shared);
+ symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
+ local_got_entries = alpha_elf_tdata(abfd)->local_got_entries;
- /* If we are using a .plt entry, subtract one, as the first
- reference uses a .rela.plt entry instead. */
- if (h->root.plt.offset != MINUS_ONE)
- entries--;
+ /* Load the relocations for this section. */
+ internal_relocs = (_bfd_elf_link_read_relocs
+ (abfd, sec, (PTR) NULL, (Elf_Internal_Rela *) NULL,
+ link_info->keep_memory));
+ if (internal_relocs == NULL)
+ return FALSE;
- if (entries > 0)
+ memset(&info, 0, sizeof (info));
+ info.abfd = abfd;
+ info.sec = sec;
+ info.link_info = link_info;
+ info.symtab_hdr = symtab_hdr;
+ info.relocs = internal_relocs;
+ info.relend = irelend = internal_relocs + sec->reloc_count;
+
+ /* Find the GP for this object. Do not store the result back via
+ _bfd_set_gp_value, since this could change again before final. */
+ info.gotobj = alpha_elf_tdata (abfd)->gotobj;
+ if (info.gotobj)
{
- bfd *dynobj = elf_hash_table(info)->dynobj;
- asection *srel = bfd_get_section_by_name (dynobj, ".rela.got");
- BFD_ASSERT (srel != NULL);
- srel->size += sizeof (Elf64_External_Rela) * entries;
+ asection *sgot = alpha_elf_tdata (info.gotobj)->got;
+ info.gp = (sgot->output_section->vma
+ + sgot->output_offset
+ + 0x8000);
}
- return TRUE;
-}
+ /* Get the section contents. */
+ if (elf_section_data (sec)->this_hdr.contents != NULL)
+ info.contents = elf_section_data (sec)->this_hdr.contents;
+ else
+ {
+ if (!bfd_malloc_and_get_section (abfd, sec, &info.contents))
+ goto error_return;
+ }
-/* Set the sizes of the dynamic sections. */
+ for (irel = internal_relocs; irel < irelend; irel++)
+ {
+ bfd_vma symval;
+ struct alpha_elf_got_entry *gotent;
+ unsigned long r_type = ELF64_R_TYPE (irel->r_info);
+ unsigned long r_symndx = ELF64_R_SYM (irel->r_info);
+
+ /* Early exit for unhandled or unrelaxable relocations. */
+ switch (r_type)
+ {
+ case R_ALPHA_LITERAL:
+ case R_ALPHA_GPRELHIGH:
+ case R_ALPHA_GPRELLOW:
+ case R_ALPHA_GOTDTPREL:
+ case R_ALPHA_GOTTPREL:
+ case R_ALPHA_TLSGD:
+ break;
+
+ case R_ALPHA_TLSLDM:
+ /* The symbol for a TLSLDM reloc is ignored. Collapse the
+ reloc to the 0 symbol so that they all match. */
+ r_symndx = 0;
+ break;
+
+ default:
+ continue;
+ }
+
+ /* Get the value of the symbol referred to by the reloc. */
+ if (r_symndx < symtab_hdr->sh_info)
+ {
+ /* A local symbol. */
+ Elf_Internal_Sym *isym;
+
+ /* Read this BFD's local symbols. */
+ if (isymbuf == NULL)
+ {
+ isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
+ if (isymbuf == NULL)
+ isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
+ symtab_hdr->sh_info, 0,
+ NULL, NULL, NULL);
+ if (isymbuf == NULL)
+ goto error_return;
+ }
-static bfd_boolean
-elf64_alpha_size_dynamic_sections (output_bfd, info)
- bfd *output_bfd ATTRIBUTE_UNUSED;
- struct bfd_link_info *info;
-{
- bfd *dynobj;
- asection *s;
- bfd_boolean relplt;
+ isym = isymbuf + r_symndx;
- dynobj = elf_hash_table(info)->dynobj;
- BFD_ASSERT(dynobj != NULL);
+ /* Given the symbol for a TLSLDM reloc is ignored, this also
+ means forcing the symbol value to the tp base. */
+ if (r_type == R_ALPHA_TLSLDM)
+ {
+ info.tsec = bfd_abs_section_ptr;
+ symval = alpha_get_tprel_base (info.link_info);
+ }
+ else
+ {
+ symval = isym->st_value;
+ if (isym->st_shndx == SHN_UNDEF)
+ continue;
+ else if (isym->st_shndx == SHN_ABS)
+ info.tsec = bfd_abs_section_ptr;
+ else if (isym->st_shndx == SHN_COMMON)
+ info.tsec = bfd_com_section_ptr;
+ else
+ info.tsec = bfd_section_from_elf_index (abfd, isym->st_shndx);
+ }
- if (elf_hash_table (info)->dynamic_sections_created)
- {
- /* Set the contents of the .interp section to the interpreter. */
- if (info->executable)
- {
- s = bfd_get_section_by_name (dynobj, ".interp");
- BFD_ASSERT (s != NULL);
- s->size = sizeof ELF_DYNAMIC_INTERPRETER;
- s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
+ info.h = NULL;
+ info.other = isym->st_other;
+ if (local_got_entries)
+ info.first_gotent = &local_got_entries[r_symndx];
+ else
+ {
+ info.first_gotent = &info.gotent;
+ info.gotent = NULL;
+ }
}
+ else
+ {
+ unsigned long indx;
+ struct alpha_elf_link_hash_entry *h;
- /* Now that we've seen all of the input files, we can decide which
- symbols need dynamic relocation entries and which don't. We've
- collected information in check_relocs that we can now apply to
- size the dynamic relocation sections. */
- alpha_elf_link_hash_traverse (alpha_elf_hash_table (info),
- elf64_alpha_calc_dynrel_sizes, info);
+ indx = r_symndx - symtab_hdr->sh_info;
+ h = alpha_elf_sym_hashes (abfd)[indx];
+ BFD_ASSERT (h != NULL);
- elf64_alpha_size_rela_got_section (info);
- }
- /* else we're not dynamic and by definition we don't need such things. */
+ while (h->root.root.type == bfd_link_hash_indirect
+ || h->root.root.type == bfd_link_hash_warning)
+ h = (struct alpha_elf_link_hash_entry *)h->root.root.u.i.link;
- /* The check_relocs and adjust_dynamic_symbol entry points have
- determined the sizes of the various dynamic sections. Allocate
- memory for them. */
- relplt = FALSE;
- for (s = dynobj->sections; s != NULL; s = s->next)
- {
- const char *name;
- bfd_boolean strip;
+ /* If the symbol is undefined, we can't do anything with it. */
+ if (h->root.root.type == bfd_link_hash_undefined)
+ continue;
- if (!(s->flags & SEC_LINKER_CREATED))
- continue;
+ /* If the symbol isn't defined in the current module,
+ again we can't do anything. */
+ if (h->root.root.type == bfd_link_hash_undefweak)
+ {
+ info.tsec = bfd_abs_section_ptr;
+ symval = 0;
+ }
+ else if (!h->root.def_regular)
+ {
+ /* Except for TLSGD relocs, which can sometimes be
+ relaxed to GOTTPREL relocs. */
+ if (r_type != R_ALPHA_TLSGD)
+ continue;
+ info.tsec = bfd_abs_section_ptr;
+ symval = 0;
+ }
+ else
+ {
+ info.tsec = h->root.root.u.def.section;
+ symval = h->root.root.u.def.value;
+ }
- /* It's OK to base decisions on the section name, because none
- of the dynobj section names depend upon the input files. */
- name = bfd_get_section_name (dynobj, s);
+ info.h = h;
+ info.other = h->root.other;
+ info.first_gotent = &h->got_entries;
+ }
- /* If we don't need this section, strip it from the output file.
- This is to handle .rela.bss and .rela.plt. We must create it
- in create_dynamic_sections, because it must be created before
- the linker maps input sections to output sections. The
- linker does that before adjust_dynamic_symbol is called, and
- it is that function which decides whether anything needs to
- go into these sections. */
+ /* Search for the got entry to be used by this relocation. */
+ for (gotent = *info.first_gotent; gotent ; gotent = gotent->next)
+ if (gotent->gotobj == info.gotobj
+ && gotent->reloc_type == r_type
+ && gotent->addend == irel->r_addend)
+ break;
+ info.gotent = gotent;
- strip = FALSE;
+ symval += info.tsec->output_section->vma + info.tsec->output_offset;
+ symval += irel->r_addend;
- if (strncmp (name, ".rela", 5) == 0)
+ switch (r_type)
{
- strip = (s->size == 0);
+ case R_ALPHA_LITERAL:
+ BFD_ASSERT(info.gotent != NULL);
- if (!strip)
+ /* If there exist LITUSE relocations immediately following, this
+ opens up all sorts of interesting optimizations, because we
+ now know every location that this address load is used. */
+ if (irel+1 < irelend
+ && ELF64_R_TYPE (irel[1].r_info) == R_ALPHA_LITUSE)
{
- if (strcmp(name, ".rela.plt") == 0)
- relplt = TRUE;
-
- /* We use the reloc_count field as a counter if we need
- to copy relocs into the output file. */
- s->reloc_count = 0;
+ if (!elf64_alpha_relax_with_lituse (&info, symval, irel))
+ goto error_return;
}
- }
- else if (strcmp (name, ".plt") != 0)
- {
- /* It's not one of our dynamic sections, so don't allocate space. */
- continue;
- }
+ else
+ {
+ if (!elf64_alpha_relax_got_load (&info, symval, irel, r_type))
+ goto error_return;
+ }
+ break;
- if (strip)
- s->flags |= SEC_EXCLUDE;
- else
- {
- /* Allocate memory for the section contents. */
- s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
- if (s->contents == NULL && s->size != 0)
- return FALSE;
+ case R_ALPHA_GOTDTPREL:
+ case R_ALPHA_GOTTPREL:
+ BFD_ASSERT(info.gotent != NULL);
+ if (!elf64_alpha_relax_got_load (&info, symval, irel, r_type))
+ goto error_return;
+ break;
+
+ case R_ALPHA_TLSGD:
+ case R_ALPHA_TLSLDM:
+ BFD_ASSERT(info.gotent != NULL);
+ if (!elf64_alpha_relax_tls_get_addr (&info, symval, irel,
+ r_type == R_ALPHA_TLSGD))
+ goto error_return;
+ break;
}
}
- if (elf_hash_table (info)->dynamic_sections_created)
- {
- /* Add some entries to the .dynamic section. We fill in the
- values later, in elf64_alpha_finish_dynamic_sections, but we
- must add the entries now so that we get the correct size for
- the .dynamic section. The DT_DEBUG entry is filled in by the
- dynamic linker and used by the debugger. */
-#define add_dynamic_entry(TAG, VAL) \
- _bfd_elf_add_dynamic_entry (info, TAG, VAL)
+ if (!elf64_alpha_size_plt_section (link_info))
+ return FALSE;
+ if (!elf64_alpha_size_got_sections (link_info))
+ return FALSE;
+ if (!elf64_alpha_size_rela_got_section (link_info))
+ return FALSE;
- if (info->executable)
+ if (isymbuf != NULL
+ && symtab_hdr->contents != (unsigned char *) isymbuf)
+ {
+ if (!link_info->keep_memory)
+ free (isymbuf);
+ else
{
- if (!add_dynamic_entry (DT_DEBUG, 0))
- return FALSE;
+ /* Cache the symbols for elf_link_input_bfd. */
+ symtab_hdr->contents = (unsigned char *) isymbuf;
}
+ }
- if (relplt)
+ if (info.contents != NULL
+ && elf_section_data (sec)->this_hdr.contents != info.contents)
+ {
+ if (!info.changed_contents && !link_info->keep_memory)
+ free (info.contents);
+ else
{
- if (!add_dynamic_entry (DT_PLTGOT, 0)
- || !add_dynamic_entry (DT_PLTRELSZ, 0)
- || !add_dynamic_entry (DT_PLTREL, DT_RELA)
- || !add_dynamic_entry (DT_JMPREL, 0))
- return FALSE;
+ /* Cache the section contents for elf_link_input_bfd. */
+ elf_section_data (sec)->this_hdr.contents = info.contents;
}
+ }
- if (!add_dynamic_entry (DT_RELA, 0)
- || !add_dynamic_entry (DT_RELASZ, 0)
- || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela)))
- return FALSE;
-
- if (info->flags & DF_TEXTREL)
- {
- if (!add_dynamic_entry (DT_TEXTREL, 0))
- return FALSE;
- }
+ if (elf_section_data (sec)->relocs != internal_relocs)
+ {
+ if (!info.changed_relocs)
+ free (internal_relocs);
+ else
+ elf_section_data (sec)->relocs = internal_relocs;
}
-#undef add_dynamic_entry
+
+ *again = info.changed_contents || info.changed_relocs;
return TRUE;
-}
+ error_return:
+ if (isymbuf != NULL
+ && symtab_hdr->contents != (unsigned char *) isymbuf)
+ free (isymbuf);
+ if (info.contents != NULL
+ && elf_section_data (sec)->this_hdr.contents != info.contents)
+ free (info.contents);
+ if (internal_relocs != NULL
+ && elf_section_data (sec)->relocs != internal_relocs)
+ free (internal_relocs);
+ return FALSE;
+}
+\f
/* Emit a dynamic relocation for (DYNINDX, RTYPE, ADDEND) at (SEC, OFFSET)
into the next available slot in SREL. */
static void
-elf64_alpha_emit_dynrel (abfd, info, sec, srel, offset, dynindx, rtype, addend)
- bfd *abfd;
- struct bfd_link_info *info;
- asection *sec, *srel;
- bfd_vma offset, addend;
- long dynindx, rtype;
+elf64_alpha_emit_dynrel (bfd *abfd, struct bfd_link_info *info,
+ asection *sec, asection *srel, bfd_vma offset,
+ long dynindx, long rtype, bfd_vma addend)
{
Elf_Internal_Rela outrel;
bfd_byte *loc;
symbol winds up in the output section. */
static bfd_boolean
-elf64_alpha_relocate_section_r (output_bfd, info, input_bfd, input_section,
- contents, relocs, local_syms, local_sections)
- bfd *output_bfd ATTRIBUTE_UNUSED;
- struct bfd_link_info *info ATTRIBUTE_UNUSED;
- bfd *input_bfd;
- asection *input_section;
- bfd_byte *contents ATTRIBUTE_UNUSED;
- Elf_Internal_Rela *relocs;
- Elf_Internal_Sym *local_syms;
- asection **local_sections;
+elf64_alpha_relocate_section_r (bfd *output_bfd ATTRIBUTE_UNUSED,
+ struct bfd_link_info *info ATTRIBUTE_UNUSED,
+ bfd *input_bfd, asection *input_section,
+ bfd_byte *contents ATTRIBUTE_UNUSED,
+ Elf_Internal_Rela *relocs,
+ Elf_Internal_Sym *local_syms,
+ asection **local_sections)
{
unsigned long symtab_hdr_sh_info;
Elf_Internal_Rela *rel;
/* Relocate an Alpha ELF section. */
static bfd_boolean
-elf64_alpha_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;
+elf64_alpha_relocate_section (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;
Elf_Internal_Rela *rel;
dynamic sections here. */
static bfd_boolean
-elf64_alpha_finish_dynamic_symbol (output_bfd, info, h, sym)
- bfd *output_bfd;
- struct bfd_link_info *info;
- struct elf_link_hash_entry *h;
- Elf_Internal_Sym *sym;
+elf64_alpha_finish_dynamic_symbol (bfd *output_bfd, struct bfd_link_info *info,
+ struct elf_link_hash_entry *h,
+ Elf_Internal_Sym *sym)
{
bfd *dynobj = elf_hash_table(info)->dynobj;
/* Finish up the dynamic sections. */
static bfd_boolean
-elf64_alpha_finish_dynamic_sections (output_bfd, info)
- bfd *output_bfd;
- struct bfd_link_info *info;
+elf64_alpha_finish_dynamic_sections (bfd *output_bfd,
+ struct bfd_link_info *info)
{
bfd *dynobj;
asection *sdyn;
them all out sequentially. */
static bfd_boolean
-elf64_alpha_final_link (abfd, info)
- bfd *abfd;
- struct bfd_link_info *info;
+elf64_alpha_final_link (bfd *abfd, struct bfd_link_info *info)
{
asection *o;
struct bfd_link_order *p;
}
static enum elf_reloc_type_class
-elf64_alpha_reloc_type_class (rela)
- const Elf_Internal_Rela *rela;
+elf64_alpha_reloc_type_class (const Elf_Internal_Rela *rela)
{
switch ((int) ELF64_R_TYPE (rela->r_info))
{
"FreeBSD" label in the ELF header. So we put this label on all
executables and (for simplicity) also all other object files. */
-static void elf64_alpha_fbsd_post_process_headers
- PARAMS ((bfd *, struct bfd_link_info *));
-
static void
-elf64_alpha_fbsd_post_process_headers (abfd, link_info)
- bfd * abfd;
- struct bfd_link_info * link_info ATTRIBUTE_UNUSED;
+elf64_alpha_fbsd_post_process_headers (bfd * abfd,
+ struct bfd_link_info * link_info ATTRIBUTE_UNUSED)
{
Elf_Internal_Ehdr * i_ehdrp; /* ELF file header, internal form. */
projects / binutils-gdb.git / commitdiff